Abstract: A device for the nondestructive material testing of an at least sectionally solid test subject by applying ultrasonic waves to the test subject and detecting the ultrasonic waves reflected inside the test subject is provided The device includes at least one testing head for transmitting the ultrasonic waves and for detecting the ultrasonic waves reflected from the test subject, at least one mobile carriage, on which the testing head is attached, and an elongate rail for guiding the carriage, which is adapted to the structure of the surface of the test subject. To this end, the carriage may be moved along the rail.

Abstract: A method for ultrasonic inspecting a substantially circular circumferential weld which connects an inner pipe and an outer pipe which are aligned coaxial relative to each other, the method comprising the steps of: a) positioning at least one ultrasonic probe inside the inner pipe; b) moving the at least one probe in tangential direction relative to the inner pipe a while emitting at least one ultrasonic beam towards the weld and receiving ultrasonic signals by means of the at least one probe.

Abstract: A monolithic manometer and method of sensing pressure changes may include sensing a change in parasitic capacitive coupling between multiple parasitic capacitive coupled conductive elements in response to a diaphragm disturbing the parasitic capacitive coupling between the conductive elements. A signal representative of the sensed change in parasitic capacitive coupling may be output.

Abstract: A semiconductor substrate, provided with a differential pressure diaphragm, and a glass pedestal, which is provided on the bottom side of the semiconductor substrate, are provided, wherein: the bottom surface of the semiconductor substrate and the top surface of the glass pedestal are bonded together; a pressure introducing hole is formed in the glass pedestal so as to pass through the glass pedestal, connecting between the top and bottom surfaces of the glass pedestal; the pressure introducing hole is formed with a first diameter for the pressure introducing hole at the bottom surface of the glass pedestal from the bottom surface of the glass pedestal to a first position; and a second diameter for the pressure introducing hole at the top surface of the glass pedestal is larger than the first diameter; where a metal thin film layer is deposited on the bottom surface of the glass pedestal.

Abstract: A stress sensor includes a circuit board having a stress sensitive structure, a pointing stick and a metallic back plate. The stress sensitive structure includes a stress deformation region and multiple resistors located on the stress deformation region. The pointing stick is disposed on a top of the circuit board and connected to the stress sensitive structure. The metallic back plate includes at least one fixing material coating region, and thus the fixing edges of the circuit board are fixed on the corresponding fixing material coating region. An assembly method for the stress sensor is also provided.

Abstract: In order to detect the stop of the yarn unwinding from a yarn feeder provided with a stationary drum and with a sensor generating a pulse per each yarn loop unwound from the drum, a threshold time interval is continuously computed, which corresponds to the maximum interval between two successive pulses, above which it should be regarded that an accidental stop of the yarn has occurred. The threshold time interval is updated in real time as a function of the yarn-drawing speed. Then the delay from the last pulse is continuously measured and compared with the updated threshold time interval. The machine is stopped when the measured delay overcomes the updated threshold interval.

Abstract: The present invention relates to a Test apparatus (10) for testing the interaction between through-thickness compression and shear in a test piece (16). The apparatus comprises first and second chocks (12, 14) arranged in use to securely retain a test piece, and first and second races (18, 20) which can be controllably urged towards each other to transmit a known force to the first and second chocks. The first and second chocks and the test piece together form a substantially cylindrical body of a first diameter and. The first and second races define therebetween a substantially cylindrical space of a second diameter for accommodating the chocks, and wherein the second diameter is greater than the first diameter.

Abstract: A device for testing a coating for a turbomachine rotor disk blade root, including two test piece halves, each including a bearing surface coated with the coating, one counter test piece including two bearing surfaces, and a machine including a first holding system for the counter test piece and a second holding system for holding the test piece halves around the counter test piece. With a tensile mechanism, the holding systems are subjected to predetermined tensile cycles along the tensile axis, during which the tensile force is transmitted from one holding system to the other via the respective bearing surfaces contacting the counter test piece and the test piece halves. The second holding system includes a resilient return mechanism allowing for the two test piece halves to open up in a direction perpendicular to the tensile direction.

Abstract: A flow rate measuring apparatus comprises a vessel for receiving electrically conductive liquid, and a measuring element for measuring electrically the filled volume of the vessel as a function of time to provide a signal representative of the flow rate of electrically conductive liquid entering the vessel. The measuring element is disposable within the vessel and is configured to regulate the flow of electrically conductive liquid from the first side to the second side of the measuring element.

Abstract: The present invention is intended to make it possible to set security functions as necessary depending on usage environment, etc. and to improve the security functions; a function setting section 1116 sets security function information received from the outside via a communication line as security functions regarding the user of gas. According to the set security function, in the case that the operation conditions of the security function are satisfied, a monitoring section 112 detects a problem during the use of gas and outputs a security signal to a control section 114. Based on the security signal from the monitoring section 112, the control section 114 shuts off the supply of gas in the case that a phenomenon satisfying an operation condition of the set function having been set has occurred.

Abstract: A system and method for measurement of flow parameters in a sewer pipe that may be partially or completely filled. Flow parameters may include flow velocity, flow volume, depth of flow and surcharge pressure. Measurements are taken from a sensor head installed on the inside of the pipe at the top of the pipe approximately the larger of at least 1 foot or 1 pipe diameter upstream of a pipe opening. Flow velocity may be measured by two different technologies. The technology employed depends on whether or not the pipe is full. If the pipe is not full then flow velocity may be measured, for example, using a wide beam, ultrasonic, diagonally downward looking Doppler signal that interacts with the surface of the flow. If the pipe is full, then flow velocity may be measured using, for example, an average velocity Doppler sensor, a peak velocity Doppler sensor or an ultrasonic velocity profiler.

Abstract: A flow measuring device has a flow channel block including a main flow channel whose both ends are open, and an auxiliary flow channel that branches from the main flow channel, a flow amount measurement element provided for the auxiliary flow channel, and a branch entrance and a collection exit that open in a wall surface of the main flow channel, and that communicate to the auxiliary flow channel, so that a part of a gaseous body that flows through the main flow channel is directed to the auxiliary flow channel through the branch entrance, and the gaseous body that has passed through the auxiliary flow channel is directed back to the main flow channel through the collection exit. A holding member containing portion is provided in a depressed manner for an area excluding an area including the branch entrance and an area including the collection exit in a circumference surface of a space of the flow channel block that configures the main flow channel. An orifice is contained within the main flow channel.

Abstract: A differential force sensor method and apparatus for automatically monitoring manual injections through an intravenous line. The differential force sensor includes two piezoresistive sense die that are packaged in close proximity utilizing a number of packaging processes. The two piezoresistive sense die can be utilized to measure forces exerted on a diaphragm on either side of an orifice. The piezoresistive sense die can be packaged in close proximity to make intimate contact with the diaphragms on either side of the orifice. The differential force sensor further includes two plungers that make intimate contact with the diaphragm and transfer the force into the piezo-resistive sense dies. Additionally, one or more ASICs and microcontrollers can be utilized to provide thermal calibration and differential calculation.

Abstract: A device measuring the speed or the direction of the wind, characterized in that it consists of the main body (1), which is hollow and can be divided into two parts and an electronic circuit (9) can be placed into the inside part thereof, and of the rotor (2) or the vane tail (3). The main body (1) is of curved shape and has a tall neck so as the rotor (2) or the vane tail (3) to be placed in such a position in order for the measurements not to be affected and it is divided into two parts the lower part (6) and the upper part (7). The upper part (7) of the main body (1) is hollow and the axle (8) is placed into the inside part thereof, where the rotor (8) or, alternatively, the vane tail (9) are mounted, depending on the measurement we wish to achieve. The device is mounted in the meteorological station of a supporting arm.

Abstract: For reducing an influence due to an external vibration, a frame has: a main frame that supports a vibration tube in a cantilever state; and a subframe that extends from the main frame toward a measurement portion side of the vibration tube, a detector and a vibration exciter are arranged on this subframe, and the outer case that surrounds the frame, the vibration tube and the like is engaged with the frame through the vibration isolating member.

Abstract: A Coriolis mass flow meter targeted for measurement of a fluid with a minute flow rate is reduced in weight and size, the flow meter being in which a subframe supporting a vibration exciter and first and second detectors has an outer peripheral wall, a notch and an inner peripheral wall, a circuit board supported by a main frame is positioned in the portion of the notch, the circuit board is housed in a board case penetrating the main frame, and a liquid crystal monitor is mounted in the portion of the circuit board adjacent to supply/discharge portions of a pair of vibration tubes.

Abstract: The present invention provides a force measuring rigid load binder in the field of goods holding. The force measuring rigid load binder of the invention address the problems of conventional force measuring rigid load binders, such as potential damages to goods, adverse affection on goods transportation, increased difficulty in manual control, time and labor consumption and inconsistent tensioning forces of the binding belt. The force measuring rigid load binder of the invention includes a tensioning mechanism having a handle. Each of both ends of the tensioning mechanism is connected with a hook respectively. The tensioning mechanism is made of a rigid material. The distance between two hooks could be adjusted by the tensioning mechanism when the handle is pulled. A sensor is provided at a forced part of the tensioning mechanism, which could generate a signal corresponding to the size of the tensioning force when the load binder is in operation.

Abstract: A force sensor apparatus and method of forming the same. The apparatus includes a force sense element that can be attached to a substrate. An actuator disposed in a hole formed within the cap is operably coupled to the force sense element for transferring force to the sense element in response to receiving a force from an external source. The force sense element is configured to sense the external force and generate an output signal representing the force. Preferably, one or more bond pads, associated with the force sense element and the substrate, can be electrically connected via wire bonding. A cover associated with an integrated flexible membrane can be mounted on the substrate in order to protect internal components associated with the force sensor apparatus from an external environment.

Abstract: In a torque sensor that detects torque acting on a torsion bar in accordance with the density of magnetic flux guided to a rotating magnetic circuit portion from a magnetism generating portion, the magnetism generating portion includes a back yoke that rotates together with a first shaft, a ring magnet joined to the back yoke, and an adhesive that is interposed between the back yoke and the ring magnet to join the two, and the adhesive includes a rotation-stopping projecting portion that engages with a rotation-stopping recess portion formed in the back yoke to function as a latch for stopping relative rotation between the back yoke and the ring magnet when an adhesion portion thereof adhered to the back yoke peels away.

Abstract: A fluid parameter measuring instrument relies upon a torque transmitting member comprising an integrally joined and substantially concentric shaft within a tube to transfer torsional stress across a pressure differential barrier without a penetration aperture seal. On one environmental side of the barrier, a pair of thin wall beams having strain gauges secured thereto are secured proximate of the beam mid-points to the torque transmitting member and the opposite ends to barrier structure. The strain gauges are connected in an electrical balance circuit to measure torque as a function of stress on the beams.

Abstract: An instrument for measuring density, with a housing (1) and a measurement cell (2) arranged therein. The housing has an inlet opening and an outlet opening for a fluid sample, with a first adapter (12) for connecting the inlet opening to a sample reservoir (14), with a second adapter (11), for connecting the outlet opening to a waste container (15), and with an adapter housing (13), which is attached to the housing. The adapter housing comprises a feed-through for the first and second adapters, characterized in that the adapter housing is designed in one piece, and the adapters can each be affixed in the adapter housing first fastening means without tools.

Abstract: The present invention provides a powder sampling device having a rod and a member mounted on the rod. The rod has a first set of cavities, the first set of cavities having first cavity and a second cavity, the first cavity being positioned at generally the same axial location as the second cavity, the first cavity being circumferentially spaced from the second cavity such that the first cavity occupies a first radial position of the rod and the second cavity occupies a second radial position of the rod and the first radial position is different from the second radial position. The member is mounted to the rod and is moveable from an open position to collect a powder sample within the first cavity and the second cavity to a closed position to retain the powder sample in the first cavity and the second cavity.

Abstract: Gas is supplied from positive pressure (105 Pa or more) to an analysis device of high vacuum (10?2 Pa or less) precisely and stably, while keeping conditions constant and replicating the conditions, and performing switching to a desired gas within a short time. According to a gas introducing device and a method, a plurality of types of gases are synthesized in a mixing chamber, the synthesized gas is introduced and the pressure of the gas is reduced by a pressure reducing pump to a pressure ranging from 0.1 Pa to 0.1 MPa, and the depressurized gas is introduced to a gas analysis device through a switching operation using a gas switching valve.

Abstract: A sample processing/injection device for liquid chromatography comprises a septum at one end of the device, a processing chamber and injection needle disposed on a second end of the device. A fluid sample is transferred into the device by a transfer needle penetrating the septum of the device. The sample device may be positioned to a receiving component such as an injection valve of an instrument by movement of the transfer needle. The sample is injected into the receiving component through the injection needle of the sample processing/injection device through motive pressure supplied by the transfer needle. The sample processing/injection device reduces sampling steps and improves automation by performing sample processing and injection with a single device.

Abstract: Linear to dynamic power multiplying device by motor lever, consisting of a motor (6) that turns a disk (3) driving a lever (5) that drives a gear (2) turning a ratchet (1) and the shaft (8), thus forming a support point on the shaft (9), multiplying the linear power of the lever (5) for dynamic shaft movement (8).

Abstract: A transmission apparatus for transmitting tapes within a tape library is disclosed. The transmission apparatus comprises a tray for transmitting a tape cartridge. A plurality of pinion gears is provided. The pinion gears are operably connected to each other and are rotatably attached to the tray. A plurality of vertically disposed racks is provided for engagement by the plurality of pinion gears for rotational movement therealong.

Abstract: An energy conversion system that converts linear kinetic energy to rotational kinetic energy is disclosed. A force is applied to a coil spring, compressing the spring. The spring drives an arm forward as the spring returns to its uncompressed state. The arm, in turn, causes the driving portion of an over-running clutch to rotate forward and drive an output shaft. The linear motion of the arm being driven forward by the spring is converted to rotational kinetic energy in the output shaft. The output shaft may then be connected to an external device to drive that device.

Abstract: A threaded spindle adjusting drive, e.g., a vehicle seat adjusting drive, includes a threaded spindle, a drive gear operably connected to the threaded spindle, and a bearing system for supporting axial and radial forces from the threaded spindle and/or the drive gear on a jacketed pipe. The bearing system has an axial bearing element abutting on at least one radially inwardly directed crimp of the jacketed pipe for supporting axial forces and a radial bearing ring abutting on the inner circumference of the jacketed pipe for supporting radial forces.

Abstract: Described in this application is a zero-backlash preload gear assembly. The assembly is specifically described for use with a positioning system in order to significantly reduce or eliminate mechanical error and improve tolerances. Furthermore, the assembly allows for infinite positioning of a work surface in order to facilitate improved efficiency of an automated system.

Abstract: The ball nut of a ball screw at the inner circumference of which a ball groove is provided, wound helically about the longitudinal axis for rolling balls, and at its outer circumference a roller bearing is arranged for rotatably supporting the ball nut, wherein the roller bearing has an inner ring which is supported by means of a support ring arranged on the ball nut in the axial support direction, wherein the support ring is arranged as a result of material deformation in the axial support direction with positive engagement on the ball nut.

Abstract: Provided are a ball-type speed reducer and a rotary table device that are capable of performing high-speed rotation and high-rigidity rotation and suitable for reduction in size and weight. An index table 10 includes a ball-type speed reducer 20 and a table 50 that is fixed to an upper surface of a worm wheel 30 of the ball-type speed reducer 20. When the worm gear 22 rotates as the input shaft 24 of the ball-type speed reducer 20 rotates, balls 36 made of a magnetic material move along a ball groove 26 having a spiral shape. The worm wheel 30 rotates as the balls 36 move, and the table 50 rotates. The balls 36 are attracted and held by the permanent magnet 34 on the worm wheel 30 side, so that a case for preventing the balls 36 from coming off the worm wheel 30 can be omitted, whereby the total size and weight can be reduced. Backlash is not required, so that high-speed rotation and high-rigidity rotation are possible.

Abstract: A transmission system includes a housing having a sump, the housing containing a crown wheel and a pinion. The transmission system further includes an oil reservoir and a pump selectively operable to pump fluid from the oil reservoir to the sump for lubricating the crown wheel. The pump is selectively operable to pump fluid from the sump to the reservoir.

Abstract: Disclosed is a multi-stage transmission which ensures that gear shifts are efficiently performed with a small number of component parts, smooth operations are performed with small forces, there are no loss of changeover time during gear shifts and no loss of the driving force, and the shift shock is small. The transmission has a driven gear shaft 12, in which are provided a first swing pawl member 25 engageable in a rotational direction with a first gear n1, a second swing pawl member 25 engageable in the rotational direction with a second gear n2 which is one step lower in reduction ratio, a third swing pawl member 24 engageable in the opposite rotational direction with the first gear n1, and a fourth swing pawl member 24 engageable in the opposite rotational direction with the second gear n2. A first cam rod 21 and a second cam rod 22 are provided which are slidable axially on and along the surface of an internal hole of the driven gear shaft 12.

Abstract: A multi-stage transmission has driving gears m and driven gears n supported on a hollow driven gear shaft 12. The driven gears n are individually engageable with and disengageable from the hollow driven gear shaft 12. The driving and driven gears m, n mesh constantly. The multi-stage transmission is intended to reduce friction loss between the hollow driven gear shaft 12 and cam rods 21,22 provided within the driven gear shaft 12 for engagement and disengagement between the driven gears n and the driven gear shaft 12. There are provided swing pawl members 24, 25 for controlling engagement and disengagement between each of the driven gears n and the driven gear shaft 12, and cam rods 21, 22 inserted in the driven gear shaft 12 to slide relative to the internal surface of the shaft 12 to operate the swing pawl members 24, 25.

Abstract: A method and apparatus for forming a powder metal forging (B) includes a die set (A1D) for forming the powder metal forging (B) having a first die (A) complementary with a second die (D) in a longitudinal direction (ZC). The die set (A,D) has at least two features (10) of dimensions with a longitudinal component (10) and a lateral component (18), and at least the lateral component (18) varies along the longitudinal direction (ZC), at least one such feature (10) in each die (A,D). Each of the first die (A) and the second die (D) includes a castellated parting interface (12,13) dissecting the laterally varying internal longitudinal feature (10, 18) in the first die from the laterally varying feature (10, 18) in the second die (D). The castellation (12,13) in the dies (A,D) provides forged powder metal parts (B) with features of opposite drafts without trapping the part (B) in the dies (A,D).

Abstract: The heat conductivity of an aluminum composite material containing a fibrous carbon material is enhanced. In order to realize this, a spark plasma sintered body having a fibrous carbon material compounded in a metal matrix powder of aluminum or the like is fabricated. At the time of fabrication, an aluminum powder serving as a matrix mother material is compounded with an Al alloy powder such as an Al-12Si powder having a melting point lower than the sintering temperature of the mother material. During the process of sintering the aluminum powder, the Al alloy powder is melted, whereby the heat conductivity between the aluminum powder particles and between the aluminum powder particle and the fibrous carbon material is improved.

Abstract: The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present invention relates to a process which mixes PLS with an acid source, preferably lean electrolyte, to induce formation of colloidal silica that can then be collected and removed. Additionally, in an exemplary embodiment of the present invention, at least one silica seeding agent is added to induce formation of colloidal silica, at least one flocculant is added to induce aggregation of the colloidal silica, and a solid-liquid separation process is utilized to remove advantageous amounts or substantially all of the colloidal silica, thereby providing relief from supersaturation of dissolved silica in the metal recovery processes.

Abstract: A detection method for detecting a concavo-convex shape surface defect existing on a ferromagnetic metal object including sensing a signal attributed to strain of the concavo-convex shape surface defect having a size in a range of 0.5 to 6 ?m. The signal is magnetic flux leaking from the ferromagnetic metal to which magnetic flux is applied. A detecting apparatus incorporates a magnetizer for magnetizing a ferromagnetic metal and a plurality of magnetic sensors arranged in the direction perpendicular to a traveling direction of the ferromagnetic metal to sense a signal attributed to strain of a concavo-convex shape surface defect having a size in a range of 0.5 to 6 ?m.

Abstract: A method of producing steel (1) with a high manganese and low carbon content on the basis of liquid pig iron (2) or liquid steel (3) and slag-forming constituents (4) with the object of preventing existing drawbacks of process route in vessels other than, e.g., electrical arc furnaces (18). With steel produced with a high manganese and low carbon content, in a process, the carbon component is reduced to about 0.7-0.8% by a combined blowing of oxygen (7) through top lances (8) and underbath nozzles (9) after feeding of liquid ferro-manganese (50 and liquid steel (3a) in a FeMn-refining converter (6a), wherein a component of a cold end product from premelt is added as cooling means (10), and wherein the carbon component is reduced to about 0.05-0.1% C by a continuous blowing of oxygen (7) through the underbath nozzles.

Abstract: In producing high-quality steel with use of copper-containing steel scraps as an iron source, the copper-containing steel scraps are melted with addition of carbon to produce hot metal for steelmaking, then, copper contained in the hot metal is removed by sulfur-containing flux, and sulfur contained in the hot metal is removed. With this method, the copper in the steel scraps can be removed efficiently and without the need for large facilities. Preferably, the sulfur-containing flux used is flux having Na2S as the main component. The treatment for removing copper in the hot metal is preferably carried out with use of refining equipment with mechanical stirrer or by the flux injecting method. Besides, it is preferable that a shaft furnace having a coke bed formed inside is used to produce hot metal having a higher concentration of sulfur for the copper removal treatment.

Abstract: An apparatus is provided for removing a childproof cap from a container having a locking mechanism. The apparatus comprises a cap engaging assembly wherein a first portion is urged toward a second portion that applies a force against the childproof cap when the container is maintained in a fixed position. The cap engaging assembly further comprises a actuating mechanism, such as a caming mechanism, that is configured such that as the first portion is urged toward the second portion, the cap is initially depressed in a linear direction until the actuating mechanism is engaged, whereby the second portion is rotated slightly relative to the first portion so that the childproof cap is also rotated and becomes disengaged from the locking mechanism of the container.

Abstract: An improved wrench includes a housing with opposite first and second ends and a pair of gears rotatably mounted in the first and second ends respectively. Each gear has a cylindrical sidewall with opposite ends and a plurality of teeth forming a sprocket extending radially outwardly from the sidewall between the opposite ends. A chain is trained about the gears within the housing. Upper and lower bushings are mounted in each end of the housing adjacent the sidewall of the respective gears to prevent contact between the gear sidewall and the housing.

Abstract: A wrench with a ratchet, including: a handle held by a user; and a head coupled to the handle and accommodating and contacting a body to be rotated, wherein the head includes: a base portion connected to one end of the handle; a first jaw extending from a first end of the base portion and including a hanging portion; and a second jaw extending from a second end of the base portion and having a shape corresponding to the first jaw, and wherein a first ratchet member which is adjacent to the hanging portion and of which a portion is moved between an inside and an outside of a rotational path of the body to be rotated that is accommodated in the head.

Abstract: A depth gauge and adjustment tool (1) having a handle (2) having a shaft (3) extending from one end of the handle. A tip (4) having a cross pin (5) attached thereto extends from the shaft. A sleeve (9) fits over the cap (6), shaft and handle and slides back an forth along the cap, shaft and handle while the depth gauge and adjustment tool 1 is in use. The sleeve houses a sleeve spring (10), which provides resistance between the sleeve and the handle. A lip (11) on the inner surface (12) of the sleeve pushes against one end of the sleeve spring and prevents the sleeve from sliding past a predetermined point on the handle. Measurement markings (13) located on the handle are used in conjunction with the sliding sleeve to measure the depth of an adjustable fastener receptacle (21).

Abstract: A single-bit screwdriver comprising: a housing; a shaft slideably mounted in the housing; the shaft having a locking portion, and the housing having at least two locking mechanism, wherein each locking mechanism engages the locking portion to prevent sliding of the shaft relative to the housing.

Abstract: A screwdriver is convenient for changing various heads. The heads can be easily detached from the screwdriver, and mounted to the screwdriver.

Abstract: An adjustable torque limiter that can be coupled between a high speed driver and the socket that rotates a mechanical fastener. When a preset torque level is reached, the torque limiter disengages the rotational drive force from the bit. The adjustability of the torque limitation is accomplished by varying the amount of spring force by which a thrust plate (coupled to the high speed driver) is forced against a set of steel balls residing in slots of a radial torque plate and in a set of paths formed in a concavity of an upper torque body (coupled to the driven socket engaging stud). When a certain preset torque is transmitted from the driver to the socket, the steel balls traverse outward along the separate arced ramp radial paths therein the upper torque body until the balls enter an annular race that allows the thrust plate to go into a disengaged or free wheel mode from the upper torque body.

Abstract: A control and management method for lathes and loaders for lathes, comprising the steps of: detecting geometric parameters and mechanical characteristics of a bar to be turned; determining development of the critical frequencies of the bar upon a rotation thereof about the longitudinal axis as the rotation rate and length of the bar vary; starting turning of the bar, avoiding the combinations of mandrel rotation rate and bar length at which the rotation rate of the bar intersects the curves that represent the development of the critical frequencies.

Abstract: Disclosed is a hydraulic fine blanking head for a mechanical press and [a] an infeeding method for same. The hydraulic fine blanking head includes an adjusting mechanism having an adjusting nut provided with an internal motion thread engaged with external motion threads on a main cylinder, the adjusting nut being turnable around a stroke axis, a sprocket wheel rotatable at a frontal surface of the adjusting nut, a hydraulic motor driving the sprocket wheel, and a brake for the motor shaft. Axial backlash between the respective 1 motion threads is prohibited by a pressure generated by a flow of pressurized hydraulic fluid which also generates a part forming force in the head. A conduit in communication with a hydraulic system and the interior of the head delivers the locking pressure, locking the threads against the backlash. Removal of pressure unlocks the threads. Infeed of the main cylinder with regard to the ram is adjustable by switching the motor and the brake on and off.

Abstract: A machine for cutting hides and the like and sheet-like material in general, with simplified-access worktable, comprising a footing for supporting a worktable, and cutting elements adapted to be moved on said worktable along the contours of the shapes to be cut, by way of numeric control, wherein the imaginary extensions of three sides of said worktable do not encounter obstacles due to said cutting elements and supports thereof, the fourth side of the worktable being surmounted by a cantilever arm that supports said cutting elements.