To Control Infeed Patents (Class 408/10)
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Patent number: 11191550Abstract: A medical driver can include a handle coupled to a drive shaft. The drive shaft can couple with an access assembly for drilling into bone, and can be displaced relative to the handle from a rotationally restricted state, in which the drive shaft is rotationally restricted relative to the handle, to a drilling state, in which the drive shaft is freely rotatable in at least one direction relative to the handle. The medical driver can further include a mechanical energy-storage device coupled to the drive shaft that can automatically rotate the drive shaft relative to the handle upon transition of the drive shaft to the drilling state. A biasing element can be coupled to the handle and to the drive shaft to provide a bias to maintain the drive shaft in the rotationally restricted state.Type: GrantFiled: February 20, 2019Date of Patent: December 7, 2021Assignee: Piper Access, LLCInventor: Jay Allen Muse
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Patent number: 11154307Abstract: A method of controlling automatic stop of a surgical drill 1) uses a smart module to receive instantaneous electrical signals of a driving device coupled to the surgical drill; 2) sets the length of a unit time, and sets the average of all instantaneous electrical signals received in a unit time as a reference electrical signal; and 3) compares the instantaneous electrical signal with the reference electrical signal. When the instantaneous electrical signal experiences a step drop with respect to the reference electrical signal, the smart module sends a stop command to the driving device to stop the operation of the driving device.Type: GrantFiled: June 9, 2019Date of Patent: October 26, 2021Assignee: ORION BIOTECH INC.Inventor: Ming-Fu Chiang
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Patent number: 10987113Abstract: Systems and methods related to use of a measurement system in conjunction with a powered instrument for determination of the placement of a tool portion relative to the anatomy of a patient utilizing the powered instrument. The measurement system may include a displacement sensor that indicates the relative displacement of the tool portion relative to the anatomy. The system may also include a sensor for monitoring a tool drive signal representative of a tool drive parameter that is characteristic of the tool portion acting on the anatomy. The tool drive signal may be analyzed relative to a given amount of axial displacement as measured by the displacement sensor to avoid false indications of placement based on noise and or other artifacts in the tool drive signal that may result from characteristics of the anatomy and/or operational behaviors of the surgeon utilizing the instrument.Type: GrantFiled: August 24, 2018Date of Patent: April 27, 2021Assignee: McGinley Engineered Solutions, LLCInventors: Joseph C. McGinley, Brian Nolte, Adam M. Johnson, Matthew R. Russell
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Patent number: 10876315Abstract: Devices for extracting cleaning robots from swimming pools include support frames and plates which can be deployed beyond and below the support frames. The support frames may be supported on rims of the swimming pools.Type: GrantFiled: October 14, 2016Date of Patent: December 29, 2020Assignee: ZODIAC POOL CARE EUROPEInventors: Philippe Pichon, Simon Duffaut, Philippe Blanc-Tailleur
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Patent number: 10173270Abstract: A countersinking device includes an internal bore positioner adapted for receipt by a bore defined by a workpiece. A driver rod engaged with the internal bore positioner extends outwardly of the bore through a bore opening. A centering chuck, engaged about and axially movable along the driver rod, is configured to engage the bore opening to cooperate with the internal bore positioner to align the driver rod along a longitudinal axis of the bore. A counterbore is engaged about the driver rod, opposite the centering chuck from the internal bore positioner. The counterbore is rotatable about and is configured to be axially advanced along the driver rod to engage the bore opening and countersink the bore. A countersink depth control arrangement is associated with the counterbore and cooperates therewith to countersink the bore to a predetermined depth. An associated method is also provided.Type: GrantFiled: January 29, 2016Date of Patent: January 8, 2019Assignee: The Boeing CompanyInventor: Derek Mickelson
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Patent number: 10024646Abstract: A method of determining a depth of a hole formed in a work piece is disclosed. The method includes determining the hole depth based upon a load signal indicative of a load on a tool forming the hole during the forming of the hole. The hole depth determined is then adjusted with an offset and component specifications are combined with the hole length to determine a component specification for use in the hole to fix components together. At least a part of the depth determination and component specification can be carried out automatically in a computer, for an array of holes.Type: GrantFiled: December 18, 2015Date of Patent: July 17, 2018Assignee: AIRBUS OPERATIONS LIMITEDInventors: Greg Andrew Hale, Gareth William Landeg, Matthew Lee Godfrey, Richard James Clayton, David John Hall
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Patent number: 9731360Abstract: An end milling apparatus has an end mill and a support member. The end mill has a cutting portion and a non-cutting portion. The support member supports the non-cutting portion in at least one direction toward the periphery of the end mill. The width of the support member as measured in the direction orthogonal to the direction of the center axis of the end mill and to the direction in which the support member is located as viewed from the end mill is smaller than the outer diameter of the end mill.Type: GrantFiled: June 30, 2014Date of Patent: August 15, 2017Assignee: National University Corporation Nagoya UniversityInventor: Eiji Shamoto
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Patent number: 9616503Abstract: One example of the present disclosure relates to an apparatus for processing a workpiece along a drilling axis, the apparatus comprising an end effector. The end effector comprises a pressure foot, a clamp linearly movable relative to the pressure foot along the drilling axis, and a flat angle drill linearly movable relative to the pressure foot along the drilling axis.Type: GrantFiled: September 10, 2014Date of Patent: April 11, 2017Assignee: The Boeing CompanyInventors: Lisa Cardon, Daniel Long, Franklin B. French
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Patent number: 9555482Abstract: An air control device includes an air suction port, air discharge ports, and an air control system. The air suction port takes in air. The air discharge ports discharge the taken-in air. The air control system discharges the air through the air discharge ports alternately for respective preset times. An air control method includes: taking in air; and discharging the air alternately through air discharge ports for respective preset times.Type: GrantFiled: September 6, 2013Date of Patent: January 31, 2017Assignees: FUJI JUKOGYO KABUSHIKI KAISHA, AMUSSIS INC.Inventors: Manabu Saito, Tatsuo Nakahata, Masao Watanabe, Tsuneari Mimori
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Patent number: 9259793Abstract: A clamping device is attached to a front part of a body of a boring machine for clamping the boring machine and a workpiece together. The clamping device comprises a fixed piston fixed on the front part of the body, a movable piston equipped over the front part of the body movably in the axial direction of a spindle of the boring machine, a first pressure chamber, a second pressure chamber, a pressurized fluid-supply device to supply pressurized air to the first pressure chamber and the second pressure chamber so that the movable cylinder is moved in the axial direction, a connecting mechanism an end portion of which is connected to the movable cylinder, and a clamping unit which is connected to the other end portion of the connecting mechanism, and is fixed to a certain position of the workpiece.Type: GrantFiled: December 5, 2013Date of Patent: February 16, 2016Assignee: SUGINO MACHINE LIMITEDInventors: Minoru Ihara, Hideki Uchiuzo
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Patent number: 9067254Abstract: A method of configuring a production line to mass customize shaped vessels includes receiving a plurality of consumer or event data. Further, the method includes configuring a plurality of vessel forming stations based in part on the received consumer or event data. Once the vessel forming stations are configured, a plurality of vessels are shaped by indexing the plurality of vessels through the vessel forming stations. The shaping operation can include shaping by contouring a length of each of the plurality of vessels, selecting a decoration style to be applied to the plurality of vessels based in part on the consumer or event data, and configuring a top-forming station based in part on the consumer or event data.Type: GrantFiled: October 12, 2009Date of Patent: June 30, 2015Assignee: THE COCA-COLA COMPANYInventors: Ruth Karina Espinel, Scott C. Biondich, Alejandro Jose Santamaria, John E. Adams, Katherine W. Allen, Gopalaswamy Rajesh, H. Brock Kolls
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Patent number: 8888417Abstract: The present invention relates to methods and systems for automatically feeding a feeding housing (206) of a drilling device (200). The drilling device (200) includes a drill stand (202), a drilling machine (204) and a feeding housing (206). Further, the drilling machine (204), which is suspended by the feeding housing (206), includes a drill with a drilling motor for performing a drilling operation through a drilling object. The feeding unit (208) includes an electric feeding motor for feeding the feeding housing (206) along the stand (202). Further, the feeding unit (208) also includes a controller for manually influencing the feeding motor's direction of rotation, speed and feeding force.Type: GrantFiled: April 16, 2010Date of Patent: November 18, 2014Assignee: Husqvarna ABInventors: Andreas Jonsson, Robert Johansson
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Publication number: 20140328638Abstract: A handheld power drill apparatus includes a drill motor, a carriage motor, a drilling implement with an interchangeable locking chuck, an electronic controller, and guide plates. The guide plate is slidably mounted to accommodate different work piece thicknesses. The drilling implement is coaxially mounted on a lead screw mounting plate. The drilling implement is positioned substantially orthogonal to the workpiece. The drilling implement is automatically driven into a workpiece by the carriage motor.Type: ApplicationFiled: May 5, 2013Publication date: November 6, 2014Inventors: Mark T. Johnson, Jacob A. Hauck
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Patent number: 8784015Abstract: A portable power drill includes a housing, a drilling implement carrying drive spindle, and a drive motor for rotating and axially feeding the drive spindle. The drive spindle is rotatively and axially displaceable relative to the housing and connected to the drive motor via angle gears, a feed mechanism and two bevel gears supported on the drive spindle. The drive motor is drivingly connected to the drive spindle via a belt drive transmission, a feed shaft, and an angle gear including an axially locked but rotative nut piece. The feed shaft is located in parallel with and coupled to the drive motor via a transmission and drivingly connected to said nut piece. The drive motor is an electric motor controlled and monitored by a programmable control unit.Type: GrantFiled: April 8, 2009Date of Patent: July 22, 2014Assignee: Atlas Copco Industrial Technique AktiebolagInventors: Karl Johan Lars Elsmark, Lars Peter Johan Kjellqvist
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Patent number: 8777526Abstract: There is provided a deep hole processing device for forming a hole by rotational movement of a main spindle to which a tool is attached of a portal machine toward a workpiece, having, a bush having a hole diameter for guiding rotational movement of the tool, and a bush holding unit provided on a cross rail capable of moving on columns of the portal machine for holding the bush with respect to a spindle head on which the main spindle is mounted at a predetermined distance, wherein a position of the bush relative to the workpiece and a pressure at which the bush is pressed against the workpiece may be controlled by movement of the cross rail.Type: GrantFiled: March 10, 2011Date of Patent: July 15, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Kikai Kabushiki KaishaInventors: Yasuo Nagase, Hiromichi Takahashi, Shigeki Otaka
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Patent number: 8696265Abstract: A portable power drill comprises a housing, a drilling implement carrying drive spindle, and two individually powered and controlled motors for rotating and axially feeding the drive spindle. The drive spindle is rotative and axially displaceable relative to the housing and connected to the drive and feed motors via angle gears including two bevel gears supported on the drive spindle. The feed via an axially locked but rotative nut piece and an external thread on the drive spindle, whereas the drive motor is drivingly connected to the drive spindle via longitudinal keyways on the drive spindle and mating splines in one of the bevel gears. The drive motor and the feed motor are electric motors controlled and monitored by a programmable control unit.Type: GrantFiled: April 8, 2009Date of Patent: April 15, 2014Assignee: Atlas Copco Industrial Technique AktiebolagInventors: Karl Johan Lars Elsmark, Lars Peter Johan Kjellqvist
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Patent number: 8662959Abstract: A method of cutting a workpiece made of a highly-hard material is provided. The workpiece is cut by a machining device including a workpiece holder that holds the workpiece, a spindle device that rotates the workpiece holder, a tool holder that holds a tool, and a relative moving mechanism that relatively moves the workpiece holder and the tool holder at least in two axial directions orthogonal to each other. In the machining device, positioning errors in the axial directions are within 5 nm.Type: GrantFiled: October 29, 2009Date of Patent: March 4, 2014Assignee: Toshiba Kikai Kabushiki KaishaInventors: Kunitaka Kuriyama, Masahiko Fukuta, Katsuhiko Sekiya, Yasuo Yamane
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Patent number: 8545139Abstract: A magnetic drilling stand is disclosed having a drilling unit (20), having an electromagnet (14) for fixing the magnetic drilling stand (10) on a component (12), having a voltage source which can be coupled to the electromagnet (14), and having a controller (28) for monitoring the holding force of the electromagnet (14), with the controller (28) having a device for monitoring the current level of the electromagnet (14), in order to identify a fault state or an adequate magnetic holding force, with a signal for an adequate magnetic holding force being produced only if, within a test phase, the current level of the electromagnet is below a respectively predetermined threshold value at at least two predetermined times after the start of the test phase.Type: GrantFiled: May 4, 2010Date of Patent: October 1, 2013Assignee: C & E Fein GmbHInventors: Martin Beichter, Rudolf Stoppel
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Patent number: 8469640Abstract: This machine includes a casing (2), a tool-holder spindle (4), a motor (6), a drive mechanism (12) having positive feed which mechanically connects the motor to the spindle and which includes a first drive member (32) for rotating the spindle, a second drive member (34) for driving the spindle in translation and which is screwed onto the spindle (4) in order to advance or return the spindle, and a clutch (36) having a return configuration which disengages the second member and the motor and an advance configuration which engages them. The clutch includes a rotary engagement member (44), a first key (48) which is movable between a position for connecting the rotary member to the motor and a position for disengaging the rotary member, and a second key (50) which is movable between a position for connecting the rotary member to the casing and a position for disengaging the rotary member.Type: GrantFiled: March 26, 2009Date of Patent: June 25, 2013Assignee: Cooper Power Tools SASInventors: Sylvain Maillard, Edouard Da Palma
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Patent number: 8388276Abstract: The present invention describes a machine to that includes a casing and a toolholder spindle. The machine tool further includes a drive mechanism that drives the toolholder spindle. The drive mechanism includes first and second drive members. The first drive member rotates the spindle about its axis. The second drive member translates the spindle and is screwed onto the spindle in such a way that the spindle advances or reverses as a function of the relative speed of rotation between the first and second drive members. The machine tool also includes a first motor and a second motor. The first motor rotates the first drive member and the second motor rotates the second drive member. The machine too further includes a control unit that controls and adjusts the speed of rotation of the first motor and the second motor independently.Type: GrantFiled: April 17, 2008Date of Patent: March 5, 2013Assignee: Cooper Power Tools SASInventors: Jacques Jaillon, Jérome Galand
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Publication number: 20130039707Abstract: A tapping machine (1) executes a tapping operation by operating a spindle motor (21) and a feed axis motor (31) in synchronization, and includes a spindle reversal detector unit (34) for detecting the reversed operation of the spindle during the tapping operation, and a reverse correction amount production unit (35) for producing a reverse correction amount for improving follow-up performance of reversed operation of the feed axis at the time when the reversed operation of the spindle is detected by the spindle reversal detector unit (34). When the reversed operation is detected by the spindle reversal detector unit, the reverse correction amount produced by the reverse correction amount production unit (35) is added to the speed instruction on a speed control loop of the feed axis control unit (30) or to an integrator (41) of the speed control loop.Type: ApplicationFiled: June 29, 2012Publication date: February 14, 2013Applicant: FANUC CorporationInventors: Kenichi TAKAYAMA, Tadashi OKITA
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Patent number: 8277154Abstract: A computer implemented method, apparatus, and computer usable program code for performing a drilling operation. The drilling apparatus comprises a housing, a spindle, a spindle motor, a thrust motor, a load sensor, and a controller. The spindle may be capable of receiving a drill bit. The spindle motor may be capable of turning the spindle at a set of different speeds during the drilling operation. The thrust motor may be capable of moving the spindle in an axial direction. The load sensor may be capable of detecting a reaction thrust force during the drilling operation to form a detected reaction thrust force. The controller may be capable of controlling the spindle motor and the thrust motor to change a drilling speed in response to changes in the detected reaction thrust force.Type: GrantFiled: May 30, 2008Date of Patent: October 2, 2012Assignee: The Boeing CompanyInventors: Robert Allen Brown, Lance O. McCann, Paul R. Arntson
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Publication number: 20120207556Abstract: The present invention is a coring unit adapted to be engaged to an articulated arm, to reduce the labor necessary for on-site coring of sewage and water pipes. The coring unit includes a frame containing the components of the unit, which include a coring bit, a coring bit motor, a traverse mechanism, and a stabilizer for allowing ready orientation of the coring unit with respect to an object being cored. The unit may also be provided with a traverse motor for driving the coring bit into an object being cored, and for withdrawing the coring bit once a core has been formed. The coring unit may additionally be adapted to allow for remote operation of the coring unit.Type: ApplicationFiled: April 25, 2012Publication date: August 16, 2012Applicant: EXCO, INC.Inventors: Andrew R. Ebert, Peter Ebert, Frederick Engel, JR., Edward Lounsberry
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Patent number: 8025467Abstract: A countersinking-carrier nozzle has a flat front surface with a central hole via which emerges a countersinking drill, such that said flat front surface establishes a limit to the penetration depth of the countersinking nozzle. The nozzle includes a flexible retainer for the nozzle front surface so that it swivels when making contact with a curved countersinking surface, adapting itself tangentially to it while the headstock presses against the countersinking surface. The flexible retainer is defined by a ball-and-socket joint including a curvo-concave retaining receptacle, with the possibility of swivelling, with a complementary curvo-convex portion provided in the rear part of the flat front surface. This portion projects with respect to the receptacle to allow it to swivel when pressed against the countersinking surface, at which moment the complementary curvo-convex portion of the rear part of the front surface swivels in the receptacle of the headstock.Type: GrantFiled: February 26, 2008Date of Patent: September 27, 2011Assignee: Airbus Operations, S.L.Inventors: Juan Ramón Astorga RamÃrez, Manuel Barrios Flores, Paloma Peinado Aguayo
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Patent number: 8000833Abstract: A system for cutting a given portion of a surface of a core insert includes a piezoelectric actuator, a turning tool, a rotating member, a driving unit and a numerically-controlled unit. The controlling unit stores coordinates of the storing coordinates of each point on the given portion of the surface in a predetermined coordinate system, and compares the instant coordinates of the cutting portion of the turning tool with the stored coordinates of the given portion, thus controlling the piezoelectric actuator to drive the turning tool to cut the given portion of the surface if the coordinates of the cutting portion of the turning tool match with the stored coordinates of any point on the given portion of the surface.Type: GrantFiled: December 23, 2008Date of Patent: August 16, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Wen-Ssu Chiu, Kun-Jung Tsai
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Patent number: 7972097Abstract: This invention is related to a rigid tapping feedback assembly that is adapted to being retrofit on a milling machine having a spindle with a spindle end extending beyond a bearing cap and an automated drive. In embodiments, the assembly comprising a housing, spindle-pulley adapter that is drivably engaged with the spindle end, pulley assembly, shaft assembly, housing cover plate, and rotary encoder. The housing mounts to the bearing cap and holds the shaft assembly in substantially parallel-spaced alignment with the spindle-pulley adapter. The pulley assembly mechanically links the spindle-pulley adapter and the shaft assembly, typically utilizing pulleys and a timing belt. The housing cover plate mounts to the housing enclosing the assembly components above and supporting the rotary encoder in substantial axial alignment with the shaft assembly. In operation, the rotary encoder senses spindle rotational speed spindle and provides feedback to the automated drive to control downward movement of the spindle.Type: GrantFiled: July 12, 2007Date of Patent: July 5, 2011Inventor: Dwayne S. Elrod
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Publication number: 20100028093Abstract: A cutting tool having a small diameter is prevented from being heavily loaded to prevent a reduction in service life thereof. An electric drill that rotationally drives an annular cutting tool by using a drill motor (46) as a drive source is brought close to a workpiece by a drill feed unit having a feed motor (20a) to drill the workpiece with the annular cutting tool. In the course of drilling, the motor current of the drill motor (46) is detected by a motor current detector (50). A main controller (64) compares the result of detection by the motor current detector (50) with a preset reference value to identify the tool diameter of the annular cutting tool being used for drilling and sets a control mode for each tool diameter according to the identification result.Type: ApplicationFiled: February 1, 2008Publication date: February 4, 2010Inventor: Kenji Otsuka
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Patent number: 7625158Abstract: A clamping assembly for clamping a product to allow drilling and/or cutting of the product by a drilling or cutting assembly, the clamping assembly including control means, activation means, moving means and clamp foot means being operatively connected whereby the control means controls the activation means to control the torque and distance moved on the activation means and moving means such that any movement of the drilling or cutting or clamp assembly relative to each other can be controlled such that the depth of and timing of drilling or cutting and or clamping by the drilling or cutting or clamping assembly can be adjusted accordingly such that if the product being clamped by the clamp foot means is moved during any additional forces that occur during drilling or cutting, then the control means can compensate and ensure the drilling or cutting depth is maintained.Type: GrantFiled: September 21, 2007Date of Patent: December 1, 2009Inventor: Murray Houlton Forlong
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Patent number: 7614832Abstract: A portable, air powered drill has an automated feed system and an adjustable dwell for producing countersunk holes in a workpiece. The feed system uses hydraulic cylinders and pneumatic control logic to control the feed rate, and the dwell time of a countersink drill bit at the end of the drill stroke. A movable mechanical stop permits an operator user to adjust countersink depth. The control logic provides fully automatic feed of the drill bit, and adjustment of the dwell time to consistently produce identical countersunk holes in a variety of workpiece materials.Type: GrantFiled: March 28, 2006Date of Patent: November 10, 2009Assignee: The Boeing CompanyInventors: David N. Nappier, Dorothy A. Nappier, legal representative, James L. Morrison, David L. Fritsche
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Patent number: 7578642Abstract: An apparatus having a single, elongated flexible rail with a plurality of attachment devices connected to the rail and spaced at intervals therealong for releasably affixing the rail to a surface of a work piece by vacuum. The rail bends and twists as needed to substantially follow the surface of the work piece. An X-axis carriage is coupled to the rail and adapted to traverse the rail along an X-axis, wherein the X-axis is parallel to a length of the rail. A Y-axis carriage is coupled to the X-axis and adapted to traverse the X-axis carriage along a Y-axis, wherein the Y-axis is perpendicular to the X-axis. A fastening device clamps the X-axis carriage to the Y-axis carriage. A laser associated with the X-axis carriage facilitates precise locating of a drill carried by the apparatus relative to a spot where a hole is to be drilled.Type: GrantFiled: August 5, 2005Date of Patent: August 25, 2009Assignee: The Boeing CorporationInventors: David L. Fritsche, Thomas P. Von Minden
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Publication number: 20090074523Abstract: A deep-hole drilling apparatus capable of preventing a tool mark from growing is provided. The deep-hole drilling apparatus provided for this purpose comprises: a tool (12) that is rotationally driven to drill a deep hole (Wa) in a work (W); an acceleration meter (19) that detects vibration of the tool (12) as the acceleration during deep hole processing; a monitoring apparatus (20) which performs frequency analysis on the acceleration detected by the acceleration meter (19) and which determines that a tool mark is produced in the deep hole (Wa) when the overall value of the whirling frequency and the bending natural frequency within a frequency range not including the torsional natural frequency on torsional vibration, constantly produced during the deep hole processing, exceeds a predetermined threshold (?); and an NC apparatus (18) that controls both revolution and feeding speed of the tool (12) on the basis of the determination made by the monitoring apparatus (20).Type: ApplicationFiled: June 26, 2007Publication date: March 19, 2009Inventors: Rimpei Kawashita, Kazuo Hirota, Hitoshi Kaguchi, Yoshitake Kasubata, Akio Kambe
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Patent number: 7210878Abstract: A process for controlling and a core drilling machine (1) having an electrical motor (2) for rotational drive of a core drill bit (3) having cutting edges (5) oriented axial to a work piece (4), a feeding means (6) for generating the feed of the core drill bit (3) against the work piece (4) and having a controller (7) for controlling, relative to a first one-to-one control parameter, detected by a sensor (8, 8?) for electrical power consumption (P) or torque (M). A force sensor (9, 9?) is connected to the controller (7) for detecting the contact pressing force (FN) of the core drill bit (3) as the second control parameter.Type: GrantFiled: January 30, 2004Date of Patent: May 1, 2007Assignee: Hilti AktiengesellschaftInventors: Oliver Koslowski, Konrad Lieb
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Patent number: 7189033Abstract: Apparatus and methods for thrust sensing valves are disclosed. In one embodiment, an apparatus includes a housing including an input port and an output port and further having a mounting portion adapted to be coupled to a manufacturing tool. A supply member is operatively coupled to the housing to provide a flow of the pressurized medium into the input port of the housing. Finally, an elongated body is operatively coupled to the housing and moveable along an axis between a first position corresponding to a first pressure output from the housing and a second position corresponding to a second pressure output from the housing. The elongated body is biased into the first position and moveable into the second position in the presence of a thrust force on the mounting portion.Type: GrantFiled: November 20, 2003Date of Patent: March 13, 2007Assignee: The Boeing CompanyInventors: David N. Nappier, David L. Fritsche, Scott A. Martin, Kenneth D. Harper
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Patent number: 6637986Abstract: The invention provides a drilling apparatus and method for drilling a hole in a workpiece. The drilling apparatus includes means for rotating a drill bit and means for advancing the rotating drill bit into a workpiece to a first depth. The drilling apparatus further includes means for dwelling the drill bit within the workpiece at the first depth for a dwell time and means for further advancing the rotating bit to a second depth after the dwell time has expired. The drilling method includes rotating a drill bit and advancing the rotating drill bit into the workpiece to a first depth. The method farther includes dwelling the drill bit within the workpiece at the first depth for a dwell time and further advancing the rotating bit to a second depth after the dwell time has expired.Type: GrantFiled: November 26, 2001Date of Patent: October 28, 2003Assignee: Delphi Technologies, Inc.Inventor: Michael Powell
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Patent number: 6585462Abstract: A device in a tool holding assembly for axially moving a rotatable shaft on which is arranged at a first end of the shaft a device for performing work during rotation of the shaft includes an electric motor for rotating the shaft, and at least one bearing radially supporting the shaft and permitting movement of the shaft in the axial direction. The shaft has a second end forming a free end and an electromagnetic mechanism is arranged to affect or operate on the second end of the shaft to draw the shaft in the axial direction from the first end to the second end against the affect of pressure acting against the second end of the shaft in the opposite axial direction. A mechanism controls the electromagnetic mechanism to achieve axial movement of the shaft during rotation of the shaft.Type: GrantFiled: November 13, 2000Date of Patent: July 1, 2003Assignee: SKF Nova ABInventor: Bo Göransson
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Publication number: 20030099520Abstract: The invention provides a drilling apparatus and method for drilling a hole in a workpiece. The drilling apparatus includes means for rotating a drill bit and means for advancing the rotating drill bit into a workpiece to a first depth. The drilling apparatus further includes means for dwelling the drill bit within the workpiece at the first depth for a dwell time and means for further advancing the rotating bit to a second depth after the dwell time has expired. The drilling method includes rotating a drill bit and advancing the rotating drill bit into the workpiece to a first depth. The method farther includes dwelling the drill bit within the workpiece at the first depth for a dwell time and further advancing the rotating bit to a second depth after the dwell time has expired.Type: ApplicationFiled: November 26, 2001Publication date: May 29, 2003Applicant: DELPHI TECHNOLOGIES INC.Inventor: Michael Powell
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Patent number: 6565293Abstract: A pneumatic machine tool includes a telescopic spindle having a drive shaft driven in rotation by a pneumatic motor. A hollow shaft is slidingly mounted on the drive shaft. A tool holder is associated with the hollow shaft and is driven in translation by a control device. The control device includes a carriage driven in translation by an endless screw via a nut carried by the carriage. The endless screw is driven in rotation by an electric motor. The character is provided with a force sensor designed to measure the thrust exerted on the tool holder and connected to a central processing unit in which is stored an algorithm for processing the signal delivered by the sensor and for monitoring the advance of the tool carried by the spindle.Type: GrantFiled: February 14, 2001Date of Patent: May 20, 2003Assignee: Recoules S.A.Inventor: Marcel Desmoulins
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Patent number: 6539313Abstract: A monitoring procedure and a monitoring installation for machine tools with a motor-driven work spindle and a separate protection device. The actual mass inertia moment of a tool fitted into the work spindle is determined by measurement and compared with a mass inertia moment calculated from the data of the tool. In addition, a predetermined parameter of a tool fitted into the work spindle is compared with that of the maximum parameter for the tool which is dependent on the strength of the protection device. The work spindle will be driven at the predetermined desired speed of rotation only if the actual mass inertia moment agrees with the calculated mass inertia moment and the predetermined parameter is smaller than or equal to the maximum parameter predetermined by the strength of the protection device.Type: GrantFiled: September 21, 2000Date of Patent: March 25, 2003Assignee: Deckel Maho Pfronten GmbHInventors: Armin Bornemann, Reinhold Seitz
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Patent number: 6476575Abstract: An adaptive control system for adaptively controlling a turning operation performed at a work piece by a turning tool adjusts a controlled input operation parameter F to maintain an output operation parameter &Dgr;M substantially at a predetermined value &Dgr;Mo to compensate variation of the output operation paramemeter &Dgr;M caused by the variation of at least one operation condition B=B (t). The system comprises a sensor (8) of the output operation parameter &Dgr;M for providing a signal Uc proportional to a current value &Dgr;Mc and an adaptive controller (10) for determining a value Fc to which the input operation parameter F should be adjusted, as a function of kUc, where k is a signal transmission coefficient which comprises an invariant signal transmission coefficient component ko inversely proportional to &Dgr;Mo.Type: GrantFiled: June 11, 2001Date of Patent: November 5, 2002Assignee: Omat Ltd.Inventors: Boris Fainstein, Mark Zuckekrman, Igor Rubashkin, Eduard Takachnik
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Patent number: 6340276Abstract: A thread-cutting apparatus with reversal of the direction of rotation with a sun-and-planet gear with an axially displaceable reversing device for reversing the direction of rotation of a drill, held in the grip of a spindle, which can be pulled out preferably against a length equalization spring after a given drilling head depth has been reached, especially reversing chucks with pressure equalization pipelines, which discharge into an equalization chamber, sealed by a movable wall from the outside air, wherein the reversing device is actuated by an external driving element, which can be actuated by a reversing signal generated by an actuator.Type: GrantFiled: January 19, 2000Date of Patent: January 22, 2002Assignee: EMUGE-Werk Richard Glimpel Fabrik fuer Praezisionswerkzeuge vormals Moschkau & GlimpelInventor: Ruediger Watzke
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Patent number: 6309151Abstract: The device includes an operating head movable by a control unit with respect to a board for machining; the operating head includes a board holder device and an electric motor for a tool spindle; the rotor of the motor rotates with respect to the stator on air-cushion supports, and the stator slides axially on a further air-cushion support and is insulated with respect to the operating head; a signal generator senses the capacitance between the rotor and the stator, and generates an electric signal upon the tool on the spindle contacting the upper surface of the board; and the signal is used to define a reference dimension relative to the upper surface, and to so condition the control unit as to feed the tool to a predetermined depth as of the upper surface.Type: GrantFiled: October 19, 1999Date of Patent: October 30, 2001Inventor: Gentile Sacchetti
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Publication number: 20010010783Abstract: This pneumatic machine tool comprises a telescopic spindle (18) having a drive shaft (28) driven in rotation by a pneumatic motor (14) and on which is slidingly mounted a hollow shaft (36) with which a tool holder (30) is associated and which is driven in translation by control means (24) comprising a carriage (38) driven in translation by an endless screw (42) via a nut (40) carried by the carriage (38), the said endless screw being driven in rotation by an electric motor, and is characterized in that the carriage is provided with a force sensor (52; 55) designed to measure the thrust exerted on the tool holder (30) and connected to a central processing unit in which is stored an algorithm for processing the signal delivered by the sensor and for monitoring the advance of the tool carried by the spindle.Type: ApplicationFiled: February 14, 2001Publication date: August 2, 2001Applicant: RECOULES S.A.Inventor: Marcel Desmoulins
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Patent number: 6158929Abstract: A method and apparatus for controlling the penetration depth of a cutting tool of a numerically controlled machine. A substantially cylindrical collar extends around at least part of the cutting tool with the collar being axially movable with respect to the axis of rotation of the cutting tool. An electronic sensor, secured to a non-rotatable housing of the numerically controlled machine transmits a signal to terminate further penetration of the cutting tool. The sensor is situated adjacent the collar and axially rearward thereof. A locking pin is provided for preventing an axially rearward end of the collar from touching an axially forward end of the electronic sensor when the collar is not being subjected to a force acting in a rearward axial direction. A nose bush for pre-positioning of the collar relative to the cutting tool in the axial direction is advantageously provided.Type: GrantFiled: November 5, 1999Date of Patent: December 12, 2000Assignee: BAE Systems plcInventor: David Fisher
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Patent number: 6015249Abstract: The device includes an operating head movable by a control unit with respect to a board for machining; the operating head includes a board holder device and an electric motor for a tool spindle; the rotor of the motor rotates with respect to the stator on air-cushion supports, and the stator slides axially on a further air-cushion support and is insulated with respect to the operating head; a signal generator senses the capacitance between the rotor and the stator, and generates an electric signal upon the tool on the spindle contacting the upper surface of the board; and the signal is used to define a reference dimension relative to the upper surface, and to so condition the control unit as to feed the tool to a predetermined depth as of the upper surface.Type: GrantFiled: May 15, 1997Date of Patent: January 18, 2000Assignee: Pluritec Italia S.p.A.Inventor: Gentile Sacchetti
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Patent number: 5819202Abstract: In an apparatus for detecting an abnormality of a control system, the internal property calculating section thereof calculates an internal property of the control system only on the basis of a command value representing a position or a speed of the control system, and the abnormality judging section judges the existence of abnormalities of the control system on the basis of an internal property calculated by the internal property calculating section and an actual internal property of the control system. Consequently, the apparatus can precisely detect abnormalities without being influenced by an observed noise or an operational error.Type: GrantFiled: May 2, 1997Date of Patent: October 6, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tomonori Sato, Takashi Iwasaki
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Patent number: 5802937Abstract: There is provided an apparatus for machining surfaces to accuracies within the nanometer range by use of electrical current flow through the contact of the cutting tool with the workpiece as a feedback signal to control depth of cut.Type: GrantFiled: July 26, 1995Date of Patent: September 8, 1998Assignee: The Regents of The University of Calif.Inventors: Robert Dean Day, Larry R. Foreman, Douglas J. Hatch, Mark S. Meadows
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Patent number: 5788428Abstract: Methods and apparatus for cutting a workpiece with a cutting tool rotated relative to the workpiece by an electric drive motor and advanced in that workpiece by an electric tool advance. These methods and apparatus sense obstacles to cutting in the workpiece by sensing an increasing draw of electric power of the electric drive motor in rotating the cutting tool relative to that workpiece, and automatically slow down the electric tool advance in response to such increasing draw of electric power. Such slowed-down electric tool advance drives the cutting tool to cut through the sensed obstacle in the workpiece. The speed of the slowed-down electric tool advance is automatically restored in response to a decrease in the sensed draw of electric power of the electric drive motor in rotating the cutting tool relative to the workpiece, and the cutting tool is advanced in the workpiece with the electric tool advance at the restored speed.Type: GrantFiled: June 4, 1996Date of Patent: August 4, 1998Assignee: Diamond Tech, IncorporatedInventors: John D. Ward, Ralph E. Benham
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Patent number: 5755537Abstract: A drill incorporates an axial feed drive, measuring system for determining the feed distance, a computer for controlling the axial feed drive as a function of the axial feed distance and a rotary drive for driving the tool spindle with pre-established on-load speed or pre-established torque or load moment. The flow or feed of cutting lubricant to the tool is controlled as a function of the pre-established on-load speed or the combination of the pre-established load moment, and the axial feed.Type: GrantFiled: July 16, 1996Date of Patent: May 26, 1998Assignee: Johannes Lubbering AGInventor: Johannes Lubbering
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Patent number: 5735646Abstract: In a system which interrupts the infeed signal generated by a CNC machine drive signals are applied to at least an RPM Control Electronics Module to drive the rotation of a cutting tool and the infeed drive motor electronics. A solid state relay intercepts the infeed signal and is driven into an on off state by a Variable Frequency Generator. This causes the solid state relay to enter the on off state in response to the input frequency and interrupts the infeed signal applied to the infeed motor electronics in synchronization with the frequency generated. The frequency is user selectable and the frequency used to eliminate or minimize chip formation is dependant upon the material being drilled, the infeed rate, the RPM of the tool, and the diameter and point geometry of the tool so adjustment by the machine operator is required. This permits the user to vary the specific frequency to select a frequency which is suitable for elimination of spirals in a given set of circumstances.Type: GrantFiled: September 22, 1995Date of Patent: April 7, 1998Assignee: Excellon Automation CompanyInventor: Wayne K. Finn
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Patent number: 5639191Abstract: A short coupled hydraulic tapping apparatus for heavy duty tapping operations including a compact, lightweight, hydraulic tool unit and a remote hydraulic power unit, with the entire apparatus being designed for portability. The tool unit includes a structural base having a slide-mounted high torque, low speed hydraulic motor with internal reduction gearing. The motor is slide mounted for directly driving a lead screw for rotation and longitudinal movement. The lead screw is supported by both the slide-mounted motor and a fixed lead nut. The slide or guideway has a length of travel substantially equal to the length of threads on the lead screw. Reversing and stop control devices control the forward tapping and retracting limits of movement. The design provides a lead screw having an internal bore for coaxially coupling with the motor drive shaft and having an internal coaxial receptacle for replaceably receiving a tapping tool.Type: GrantFiled: September 4, 1996Date of Patent: June 17, 1997Inventor: Robert C. Womack