Abstract: A substrate processing apparatus includes a nozzle that supplies a processing liquid to a substrate, a mover that moves the nozzle between a supply position above a substrate and a waiting position outward of the substrate, a nozzle container that is located at the waiting position and contains the nozzle, a first exhaust flow path that guides a gas in a processing space in which a processing liquid is supplied to a substrate to an exhaust device, and a second exhaust flow path that guides a gas in the nozzle container to the first exhaust flow path.

Abstract: The disclosure relates to a coating device (e.g. painting robot) for coating components (e.g. motor vehicle body components) with at least one electrical consumer which requires electrical energy for operation. The disclosure provides a transmission system for wireless transmission of the electrical energy required for operation of the at least one consumer to the consumer and/or for transmission of data from and/or to the at least one consumer.

Abstract: A cavity cleaning and coating system for safely and efficiently cleaning and coating the interior of a cavity without requiring entry of any workers. The cavity cleaning and coating system generally includes a mount which is coupled with a movable arm of a vehicle. The mount includes an inner plate, which is coupled to the arm, and an outer plate. A shaft is coupled to the outer plate. The mount is adjustable independently of the arm of the vehicle, including outwardly, inwardly, and rotatably. A spray head is connected to the shaft. The spray head is rotatable and includes a dispenser for dispensing fluids. The vehicle is positioned near a cavity to be treated. The mount is adjusted for optimal positioning of the spray head. The spray head is lowered into the cavity to dispense a cleaning fluid and, after the cleaning fluid has dried, a coating fluid.

Abstract: An optical device coating assembly is provided. The optical device coating assembly includes a substrate support operable to retain an optical device substrate. The coating assembly further includes a first actuator connected to the substrate support. The first actuator is configured to rotate the substrate support. The coating assembly includes a holder configured to hold a coating applicator against an edge of the optical device substrate when the optical device substrate is rotated on the substrate support and a second actuator operable to apply a force on the holder in a direction towards the substrate support. The second actuator is a constant force actuator.

Abstract: A fluid dispensing apparatus is claimed. The fluid dispensing apparatus includes a body, where the body is hollow and has an interior cavity extending axially through the body, and where the interior cavity has a first end and a second end. The fluid dispensing apparatus also includes a cap sealing the first end, a connection mechanism joining the cap and the body, and an applicator assembly disposed within the interior cavity. The applicator assembly includes an applicator disposed at the first end, the applicator having at least one outlet, and a piston connected to the applicator, where the piston comprises a head disposed within the interior cavity and a plunger rod extending from the head and through the second end of the interior cavity. The fluid dispensing apparatus further includes a pedal connected to the plunger rod.

Abstract: The present specification relates to an electrode coating apparatus and an electrode coating method that include a turbulent flow generator to uniformize a distribution of a velocity of a coating material transferred from a supply tank to an injection port of a slot die.

Abstract: A system includes a robot, a measuring device, and a processor. The robot is configured to dispense, based on at least one process parameter, a liquid adhesive bead onto a substrate. The measuring device is configured to measure at least one characteristic of the bead shape. The processor is configured to determine, based on a reference bead shape and at least one reference process parameter, response surface profile of the liquid adhesive. The processor is configured to compare the measured bead shape to a reference bead shape and, responsive to determining the measured bead shape is different than the reference bead shape, determine, based on the response surface profile, at least one updated process parameter. The updated process parameter is configured to cause the robot to dispense a second bead having the reference bead shape.

Abstract: A deposition apparatus includes a deposition member providing a deposition material, a stage including a first rear surface, a first front surface opposite to the first rear surface, and a first inner side surface extended to the first rear surface and the first front surface and defining a first opening, a mask frame including a second rear surface facing the first front surface, a second front surface opposite to the second rear surface, and a second inner side surface extended to the second front surface and the second rear surface and defining a second opening, masks disposed on the second front surface and each being provided with a plurality of deposition openings defined therethrough to correspond to the second opening, and a heat dissipation plate disposed between the deposition member and the stage and covering the first rear surface, the first inner side surface, and the second side inner surface.

Abstract: In a powder coating process, a primer step is implemented prior to electrostatically applying the powder coating, either in advance of preheating the object to be coated or subsequent thereto, depending upon the selection of materials used in the object to be coated, the primer material being diluted fabric softener applied in a fine mist spray or fog to the object.

Abstract: A method for repairing surface imperfections on a vehicle body includes the application of an uncured layer to a thickness of up to 0.254 mm of a primer composition comprising: a polyester resin, an acrylated urethane resin, a crosslinking agent, a solvent, and a particulate filler to the vehicle body. The uncured layer is exposed to actinic radiation to induce cure of the uncured layer to form a coating to fill the surface imperfection on the vehicle body. A surface coating primer composition is also provided that includes a polyester resin; an acrylated urethane oligomer or polymer; a crosslinking agent; a solvent; a photoinitiator; and a particulate filler. The uncured composition has a viscosity of between 100 and 800 centipoise.

Abstract: MEMS ultrasonic transducer, MUT, device, comprising a semiconductor body with a first and a second main face, including: a modulation cavity extending into the semiconductor body from the second main face; a membrane body suspended on the modulation cavity and comprising a transduction membrane body and a modulation membrane body; a piezoelectric modulation structure on the modulation membrane body; a transduction cavity extending into the membrane body, the transduction membrane body being suspended on the transduction cavity; and a piezoelectric transduction structure on the transduction membrane body. The modulation membrane body has a first thickness and the transduction membrane body has a second thickness smaller than the first thickness. In use, the modulation membrane vibrates at a first frequency and the transduction membrane vibrates at a second frequency higher than the first frequency, to emit and/or receive acoustic waves at a frequency dependent on the first and the second frequencies.

Abstract: Provided herein are micromachined ultrasonic transducers as well as imaging devices and assemblies comprising micromachined ultrasonic transducers (MUTs). The MUTs described herein have a plurality of membranes so as to improve acoustic power at higher frequencies.

Abstract: A system for cleaning, repairing, and/or replacing damaged shaker screens is disclosed. The system may comprise a shale shaker with a replaceable shaker screen, at least one camera, and a computer processor. The camera is positioned to capture images of the shale shaker screen and the processor is capable of receiving said images from the camera. The processor is configured to analyze the images and detect damaged regions of the shale shaker screen. The processor is also configured to determine when a screen is damaged above a predefined threshold. Certain embodiments allow for the automatic cleaning, repair, and/or replacement of the shaker screen.

Abstract: The present invention discloses a mattress cleaning device including a conveying assembly, a first brush roller set, a second brush roller set, and a third brush roller set. Multiple groups of the conveying assemblies are arranged horizontally at intervals to form a conveying channel, and multiple alternate spaces are formed between the multiple groups of the conveying assemblies. The first brush roller set includes at least two movable brush roller rotatably arranged in multiple alternate spaces, and the moving brush rollers can move up and down relative to the conveying assembly in a direction perpendicular to the conveying channel so as to clean the front face and the rear face, and the lower face of a mattress. The second brush roller set is rotatably arranged above the conveying assembly to clean the upper end face of the mattress.

Abstract: A substrate cleaning apparatus includes a substrate rotation supporting section that supports and rotates a substrate; a roll holding section that rotatably holds a first roll cleaning member and a second roll cleaning member each having a length almost equal to a radius of the substrate; a roll rotation drive section that rotates the first roll cleaning member and the second roll cleaning member about respective axes of rotation parallel to a front surface of the substrate; and a roll pressing section that brings the first roll cleaning member and the second roll cleaning member that are rotating into sliding contact with the front surface of the substrate. The first roll cleaning member and the second roll cleaning member are disposed so as to cover different radial parts of the front surface of the substrate.

Abstract: A multi-axis variable-speed hot washing machine is provided, including a cleaning chamber, a drive apparatus, and a rotation mechanism. The rotation mechanism is arranged in an inner cavity of the cleaning chamber and is in transmission connection with the drive apparatus. At least one or more groups of rotation mechanism is arranged. The inner wall of the cleaning chamber is provided with a scraping mechanism that enhances a squeezing and frictional cleaning effect on a to-be-cleaned material.

Abstract: Method of cleaning sucker rods using a portable cleaning tool containing a rotating brush assembly to remove scale and corrosion residue on the sucker rods is described herein. The brush is annular with an empty or hollow center, such that the rod can penetrate through the hole in the brush. The tool is powered by air compression, and also contains a mechanism of removing the collected debris for disposal. The cleaning tool assembly could be either a standalone device on site placed on a mounted rack, or could be attached to the rod to be cleaned.

Abstract: The present invention discloses a label removing machine. The label removing machine includes a base, a feeding seat and a supporting seat being disposed on the base, an outer cylinder being disposed between the feeding seat and the supporting seat, a rotary drum being disposed in the outer cylinder, moving blade components being disposed on an outer wall of the rotary drum, the outer cylinder including a supporting frame, a plurality of fixed blade plates being detachably connected to the supporting frame in the circumferential direction, and a plurality of fixed blade components being detachably connected to the fixed blade plates.

Abstract: A dust collector includes a container defining an interior volume and an opening. A scraper is positioned within the interior volume of the container, and an edge of the scraper is positioned adjacent an inner surface of the container. A collection motor is coupled to the container and is operable to rotate the container about an axis of rotation between at least a first orientation and a second orientation. The container is positioned and oriented for collecting dust within the interior volume of the container via the opening of the container in the first orientation. The container is positioned and oriented for discharging dust from the interior volume of the container via the opening of the container in the second orientation. A trough is disposed below the container. The trough is positioned for receipt of the dust from the interior volume of the container when the container is in the second orientation.

Abstract: In a roll stand, the working roll inserts are pressed apart by a bending system. A base set-point value (FBB*) is supplied to a bending controller to determine a resultant set-point value (FB*). An actual value (FB) of the bending force is also supplied to the bending controller to determine a base controlled variable (SB) for the bending system so that, when the bending system is actuated with (SB), (FB) is brought as close as possible to (FBB*). From a stabilisation time (t3) after an entry time (t2), the bending controller determines (FB*), additionally taking an actual rolling force (F) into consideration. During an entry time period before (t2) and ending at (t3), an additional set-point value (FBZ*) is supplied to the bending controller for determining (FB*). (FB) is thus greater than (FBB*).

Abstract: A position controller that controls an actuator that sets a roll gap of a roll stand by determining an actuating variable (q) for the actuator as a function of a resulting position target value (s*) and a position actual value(s) of the actuator. The (s*) is determined with a resulting base target value (s1*), which is determined as the sum of an initial base target value (s0*) and an additional target value (?s1*), which is determined by a determination element with an inlet-end actual tension (ZE) and an inlet-end reference tension (ZER) and/or with an outlet-end actual tension (ZA) and an outlet-end reference tension (ZAR). Instead of (ZE) and (ZA), the corresponding target tensions (ZE*, ZA*) of corresponding tension control operations can also be used. However, in both cases, (ZER) and (ZAR) are variables that differ from (ZE*) and (ZA*).

Abstract: The present disclosure relates to a tail end buckling suppression device for a tandem rolling mill rolling a material to be rolled by N (N?2) successive rolling stands. Each i-th rolling stand (1?i?N) of the tandem rolling mill includes an i-th roll bender device screwing down the material to be rolled with preset roll bender pressure. During a period after a tail end of the material to be rolled comes out of one designated j-th rolling stand (1?j?N?1) until the tail end of the material to be rolled comes out of the N-th rolling stand, the tail end buckling suppression device causes each of j+1-th to N-th roll bender devices downstream of the j-th rolling stand to continuously lower the roll bender pressure.

Abstract: The invention relates to a cooling device with coolant jets having a hollow cross section. A treatment line for a flat, elongate, hot rolling stock made of metal has a finishing train for rolling the rolling stock and a cooling device. The cooling device can, as required, be located upstream or downstream of the finishing train or within the finishing train. The cooling device has a first cooling bar, which extends fully over the rolling stock, seen in the width direction of the rolling stock. The first cooling bar has, facing the rolling stock, several coolant outlets by means of which water is applied to the rolling stock. The coolant outlets are arranged in the first coolant bar in a positionally fixed manner extending in at least one width direction (y) of the rolling stock and each have, within the respective row, a predefined distance from one another.

Abstract: The present invention may include a dent impactor, which may include a ram and an impactor head on one end of the ram. The ram may be adapted to accelerate the impactor head to forcefully make contact with a vehicle body element, thereby denting the vehicle body element. The impactor head may be replaceable on the ram. Different impactor heads of numerous shapes and sizes may be provided. The ram may be a pneumatic cylinder, as such the criteria of a dent may be the classification of the impactor head used, such as the diameter of the impactor head, and the air pressure provided to the cylinder which may comprise the ram. The vehicle body element may be supported by a body element support, which may include a rotating portion. The body element support may include a mounting element in the form of a body element table, or one or more standoffs, movably mounted to the body element support. The mounting element may be adapted to receive the vehicle body element and securely support the vehicle body element.

Abstract: A method for producing a device includes, by an electronic computing unit, determining a nominal value of a nominal property of the device to be produced and/or of a movement apparatus for moving the device in space. By the electronic computing unit, comparing the nominal value with actual values of a property of respective already produced devices and/or of an already produced movement apparatus, where a respective difference between the nominal value and the respective actual value is determined in the comparing. By the electronic computing unit, displaying an item of information on an electronic display, where the information characterizes one of the already produced devices, where one of the actual values belongs to the one device characterized by the information, and where one of the differences was determined on a basis of the one actual value belonging to the device characterized by the information.

Abstract: A rotary cable arranging tool is disclosed. The rotary cable arranging tool is used for untwisting a first and a second cable. The rotary cable arranging tool includes a first annular structure, a first and a second assembly member, and a first and a second hole. The first and the second holes are assembled by the cooperation of the first and the second assemblies so as to be pressed to change a width of an inner diameter. When the first and second cables are in a twisted state, the first and second assemblies are counter-rotated together, so that the first and the second cables are untwisted and enter the first and second holes respectively. Then the first and second holes are tightly combined with the first and second cables, and the first and the second cable are pulled out to be straightened.

Abstract: A rebar tying robot may include a rebar tying unit, a conveying unit, and a control unit. The conveying unit may include a longitudinal movement mechanism, a lateral movement mechanism, and a first three-dimensional distance sensor. The control unit may be configured to execute a first rebar extraction process in which the control unit extracts point clouds from point clouds included in the first point cloud data, a first judgement process in which the control unit judges whether the primary rebar exists within a predetermined judgement area based on the point clouds extracted in the first rebar extraction process, and a lateral movement process in which the control unit drives the lateral movement mechanism. When the control unit judges in the first judgement process that the primary rebar does not exist within the judgement area, the control unit may execute the lateral movement process.

Abstract: A binding machine includes a magazine including an accommodation part configured to accommodate a reel, and a lid part configured to cover the accommodation part to be openable and closable, a wire feeding unit configured to feed the wire in a forward direction in which the wire is pulled out from the magazine and in a reverse direction in which the wire is pulled back to the magazine, a curl forming unit configured to form a path along which the wire fed in the forward direction is to be wound around an object, a binding unit configured to twist the wire fed in the reverse direction and wound on the object, and a plurality of regulating portions configured to regulate opening of the lid part from a closed state in which the accommodation part is closed by the lid.

Abstract: A binding machine includes a magazine configured to accommodate a wire, a wire feeding unit configured to feed the wire in a forward direction in which the wire is pulled out from the magazine and to the magazine, a drive unit configured to drive the wire feeding unit, a curl forming unit configured to form a path along which the wire fed in the forward direction is to be wound around an object, a binding unit configured to twist the wire fed in the reverse direction and wound on the object by the wire feeding unit, and a controller configured to control the drive unit. The controller is configured to change a feeding speed of the wire by controlling a rotational speed of the drive unit based on a state of the wire in the magazine.

Abstract: A press machine comprises a moveable press ram, an actuator, a first motor system, a second motor system, and a belt system. The moveable press ram holds a tool that forms a part. The actuator linearly moves the moveable press ram by use of a male-female thread mechanism. The actuator includes an actuator sprocket coupled to the male-female thread mechanism. The first motor system produces a high-force linear movement condition to the press ram, and includes a clutch coupled to a first motor and a first motor sprocket coupled to the clutch. The second motor system produces a high-speed linear movement condition to the press ram. The belt system couples the actuator sprocket, the first motor sprocket, and the second motor sprocket. The clutch allows the first motor to partially or fully disengage from rotational movement of the first sprocket when the belt is being driven by the second motor.

Abstract: A computer implemented method for adjusting a fastener setting tool, the method comprising: measuring a first parameter associated with a first characteristic of the fastener setting tool; comparing the first parameter to a predetermined parameter, wherein the difference between the first parameter and the predetermined parameter represents a condition of the fastener setting tool; calculating an adjustment based on the comparison, wherein the adjustment is to the first characteristic of the fastener setting tool and/or to a second characteristic of the fastener setting tool, the adjustment configured to compensate for the condition of the tool; and applying said adjustment to the fastener setting tool.

Abstract: An ingot mould for continuous casting, with a lubricant channel (2) opening to the running surface (1), has a distribution portion (3) adjoining the running surface (1). In an ingot mould of the aforementioned type a uniform lubrication of the running surface of the ingot mould is possible using as few wear-susceptible components as possible, where the flow resistance within the distribution portion (3) increases in the direction of the running surface (1) and is constant in a discharge region (4) of the distribution portion (3) adjoining the running surface parallel to the running surface (1).

Abstract: A casting system for forming a directionally-solidified casting component is provided. The casting system defines an axial direction, a radial direction, and a circumferential direction. The casting system includes a chamber and a baffle plate disposed within the chamber. The chamber and the baffle plate collectively define a heating zone and a cooling zone. The heating zone and the cooling zone are separated by the baffle plate. The casting system further includes a shaft and a cooling plate disposed on the shaft. The cooling plate is movable between the heating zone and the cooling zone. A mold shell is disposed on the cooling plate. The casting system further includes a cooling system for directing a coolant fluid towards the mold shell.

Abstract: A casting method includes: forming a seed, the seed having a first end and a second end, the forming including bending a seed precursor; placing the seed second end in contact or spaced facing relation with a chill plate; contacting the first end with molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material. The forming further included reducing a thickness of the seed proximate the first end relative to a thickness of the seed proximate the second end.

Abstract: A method of forming a directionally-solidified casting component using a casting system is provided. The casting system includes a chamber having a heating zone and a cooling zone separated by a baffle plate. The method includes pouring an alloy in a liquid state into a mold shell. The mold shell is positioned on a chill plate within the heating zone. The method further includes moving the mold shell from the heating zone into the cooling zone. The alloy transfers from the liquid state to a solid state within the mold shell while moving the mold shell from the heating zone to the cooling zone. The method further includes contacting the mold shell with a heat transfer member.

Abstract: Disclosed is a process for making a diamond tool for processing ceramic starting from a mixture of aluminum-based powders in order to obtain a grinding wheel for an eco-friendly squaring of ceramic.

Abstract: A method may include coating a substrate with a solution, where the solution includes one or more metal salts and a first solvent. The one or more metal salts may be configured to dissolve in the first solvent. The method may further include adding a second solvent to the coated substrate until one or more metal salt crystals precipitate over a surface of substrate. The second solvent may include an antisolvent where the one or more metal salts of the solution are insoluble in the second solvent. The method may further include performing a microwave heating process to apply microwave heat to the substrate while the second solvent is present to induce thermal decomposition of the one or more metal salts until one or more metal nanostructures are formed on the surface of the substrate.

Abstract: Methods are disclosed for producing product particles having a uniform size using a microwave plasma process. More particularly, methods of the present technology are used to manufacture product particles having a core at least partially surrounded by a shell. The core and shell of the product particles are chemically distinct. Methods of the present technology occur within a plasma chamber of a microwave plasma reactor and a microwave formed plasma is utilized to vaporize core precursor material.

Abstract: Methods for reducing a concentration of hexavalent chromium within a first aluminum slurry by adding a reducing agent to form a second aluminum slurry are provided. The reducing agent causes a chemical reduction reaction with the hexavalent chromium compound of the first aluminum slurry to form a trivalent chromium compound within the second aluminum slurry such that a first weight ratio of hexavalent chromium to trivalent chromium in the first aluminum slurry is decreased to a second weight ratio of hexavalent chromium to trivalent chromium in the second aluminum slurry, with the second weight ratio being less than the first weight ratio.

Abstract: A method of additive manufacturing an article from a feed material in a chamber includes evacuating at least some of a first gas from the chamber, thereby reducing a pressure therein from a first pressure to a second pressure and reducing the first gas from a first concentration to a second concentration. At least some of the first gas is then gettered from the chamber using a getter, thereby lowering the first gas concentration to a third concentration. The article is then additive manufactured from the feed material in the chamber using the getter as a substrate. The gettering comprises heating the getter at least in part using a fusion source, and the additive manufacturing comprises heating the feed material at least in part using the fusion source.

Abstract: A method of automated alignment of scanning optics includes the steps of irradiating an object area of a layer of a powdered material provided on a building platform with at least one irradiation beam and irradiating a calibration area of the layer with at least one irradiation beam. A first irradiation beam is guided with a first scanning optic over an intermediate top face thereby melting a first calibration pattern into the intermediate top face and a second irradiation beam is guided with a second scanning optic over the intermediate top face thereby melting a second calibration pattern into the intermediate top face. At least one image is acquired of the intermediate top face and image points related to the geometrical features of the calibration patterns are identified so that a spatial offset between the geometrical features can be derived. Based on the spatial offset, the scanning optics are aligned.

Abstract: A valve configured to control flow of a material therethrough includes a body having a bore formed axially therethrough. The valve also includes a cooler positioned at least partially around or within the body. The cooler is configured to cool the material to below a melting point of the material to form a solid plug within the body to prevent the material from flowing therethrough. The valve also includes a heater positioned at least partially around or within the body. The heater is configured to re-heat the material to above the melting point of the material to allow the material to flow therethrough.

Abstract: The present disclosure provides three-dimensional (3D) printing processes, apparatuses, software, and systems for controlling and/or treating gas borne debris in an atmosphere of a 3D printing system.

Abstract: A metal power recycling system has at least one chamber into which metal scraps are placed, at least one transmission line enabling metal scraps to be transferred out of the chamber, at least one pretreatment unit into which the metal scraps are transferred through the transmission line and in which oxygen removal, hydrogenation, cooling, grinding and sieving processes are performed for the metal scraps, at least one gathering chamber into which the sieved powder-form metal scraps are transferred from the pretreatment unit through the transmission line is disclosed.

Abstract: A device for machining a surface of a workpiece includes a workpiece holder configured to rotate the workpiece about a workpiece rotational axis, a tool having a tool rotational axis and at least one blade having a blade radius of curvature and a tool holder configured to position the tool such that an active point of the blade comes into engagement with the workpiece and configured to pivot the tool about the tool rotational axis and to configured to move the tool with an advancing motion such that the active point of the blade shifts along the blade. The advancing motion is defined by a curve having at least a first radius of curvature and a second radius of curvature.

Abstract: A coated cutting tool having excellent wear resistance and controlled brittleness is provided. An embodiment of the present disclosure provides a coated cutting tool including: a substrate; and a cutting layer disposed on the substrate, wherein: the cutting layer includes a brittleness suppressing layer and a wear-resistant layer disposed on the brittleness suppressing layer; the substrate includes a hard alloy body such as cemented carbide, cermet, ceramic, cubic boron nitride-based materials, or high-speed steel; the brittleness suppressing layer includes a first layer and a second layer disposed on the first layer; the first layer and the second layer each independently includes any one of (AlbTi1-b)X (where 0.6<b<0.8, and X is at least one selected from N, C, CN, NO, CO, and CNO) and (TicAl1-c)X (where 0.4<c?0.5, and X is at least one selected from N, C, CN, NO, CO, and CNO); and the first layer and the second layer include materials different from each other.

Abstract: A two-cutting-edge parting insert including a first cutting portion, a second cutting portion and an elongated body portion connecting the first and second cutting portions. The elongated body portion has a body width (BW) measurable parallel to a lateral axis and a body length (BL) measurable parallel to an elongation axis. The body width is smaller than both cut widths of the cutting edges of the first and second body portions and fulfills the condition: 0.65 mm?BW?0.95 mm; and the body length fulfills the condition: 2 mm?BL?14 mm.

Abstract: A tool driving device for hole processing includes a spindle, an electric motor, a guide, an electric actuator, a sensor and a controller. The spindle has a holder for holding a tool for the hole processing. The holder is disposed at a distal portion of the spindle. The electric motor rotates the spindle. The guide has a positioning member for positioning the tool driving device to the workpiece. The electric actuator advances and retreats the spindle relatively to the guide in a rotation axis direction of the spindle. The sensor measures cutting resistance transmitted from the tool to the spindle. The controller is configured to control the electric motor and the electric actuator based on the cutting resistance measured by the sensor so that a rotating speed and a feeding speed of the spindle become a rotating speed and a feeding speed according to the cutting resistance.

Abstract: A tool driving device for cutting includes a spindle and an electric motor. A user carries the tool driving device by hand to use the tool driving device. The spindle has a holder for holding a tool for the cutting. The holder is disposed at a distal portion of the spindle. The electric motor rotates the spindle. A thrust bearing is attached to a housing of the electric motor. The spindle is contacted to the thrust bearing so that cutting resistance in a rotation axis direction of the spindle, transmitted from the tool to the spindle, is applied to the thrust bearing.

Abstract: A collet bush includes a tapered cylindrical outer surface, a cylindrical inner surface and a flow path. The collet bush is to be inserted into a concentric collet that is attached to a handheld tool driving device in order to position the tool driving device to a workpiece. The tool driving device holds, rotates and feeds a tool. The tool driving device has a function to suck chips. The outer surface is for expanding the concentric collet. The inner surface forms a through hole for slidably fitting the tool. The flow path is for taking in air used for sucking the chips inside the collet bush. The tool driving device includes the above-mentioned collet bush and the concentric collet.