Abstract: A press machine in which the service life of a ball thread mechanism is extended. The press machine includes a die 2, a punch 4, a press drive mechanism 6, a height position changing mechanism 21, and a die height position control device 32. The press drive mechanism 6 is configured to move the punch up and down. The press drive mechanism includes at least one ball thread mechanism 10 in which a nut 13 is threaded via balls 12 onto a threaded shaft 11. A rotational drive source 14 is provided to rotate one of the threaded shaft 11 and the nut 13. The position changing mechanism 32 is configured to change the height of the die 2. The die position control device 32 controls the height of the die 2 via the position changing mechanism 21 so that the position varies where the balls 12 come into contact with the inner face of the thread grooves 11a of the threaded shaft 11 during pressing.

Abstract: A multi-layer driver plate is disclosed for use in electromagnetic sheet metal forming operations. In one embodiment, the driver plate comprises a first layer characterized by low electrical resistivity and thickness for inducement and application of a suitable electromagnetic forming force, a second layer comprising an elastomeric material for compressing a sheet metal workpiece against a die surface and then regaining its original pre-forming structure, and a third layer interposed between the first layer and the second layer to protect the EMF force providing layer and to provide overall strength and durability to the EMF driver plate.

Abstract: A device for controlling a die cushion mechanism including a servo-motor as a drive source and producing a force adapted to be applied to a slide in a press machine. The device includes a section for commanding a force to be produced by the die cushion mechanism; a section for detecting a force produced by the die cushion mechanism and applied to the slide; a section for detecting a moving speed of the slide; and a section for executing a force control on the servo-motor. The force controlling section executes force controls in mutually different modes on the servo-motor, through mutually different control loops, one mode being provided for an initial stage defined from an instant when the die cushion mechanism starts producing the force to be applied to the slide until a predetermined subsequent instant, and another mode being provided for a succeeding stage defined after the predetermined subsequent instant, by using at least a slide-speed detected value detected by the slide-speed detecting section.

Abstract: A rivet monitoring system is provided which has a micro-strain or micro fluid pressure sensor that measures strains or pressures within a tool component. These measured signals are compared to a number of tolerance bands formed about median strain or pressure versus time curve. Various techniques are provided to analyze the measured data with respect to the tolerance bands to determine if a particular rivet set is acceptable.

Abstract: A control apparatus for controlling a die cushion mechanism including a servo-motor as a drive source and producing a force adapted to be applied to a slide in a press machine. The control apparatus includes a force commanding section for commanding a force to be produced by the die cushion mechanism; a force detecting section for detecting the force produced by the die cushion mechanism; a motor-speed detecting section for detecting an operating speed of the servo-motor; a slide-speed detecting section for detecting a moving speed of the slide; and a force controlling section for executing a force control on the servo-motor, based on a force command value commanded by the force commanding section, a force detected value detected by the force detecting section, a motor-speed detected value detected by the motor-speed detecting section and a slide-speed detected value detected by the slide-speed detecting section.

Abstract: A crimping tool including a punch carrier, a plurality of punches movable in translation in radial housings of the punch carrier, a thrust member having an inside face co-operating with the outer ends of the punches, the thrust member being pivotally mounted relative to the punch carrier, such that pivoting of the thrust member causes a contact to be crimped, a tool body having two pivotal handles for causing the thrust member and the punch carrier to pivot mutually, and a member for adjusting the stroke of the punches, a sensor sensitive to the position of the member for adjusting the stroke of the punches, a sensor sensitive to an identity signal from a contact positioning tool, and a memory associated with the position sensor and with the identity sensor and arranged to record the data delivered by the sensors and/or to deliver the data to a data processor unit.

Abstract: A device (110) for judging the collision of a slide (24) with a die cushion in a die cushion mechanism (20) which produces a force against the slide in a press machine using a servo motor (18) as a drive source, comprising force detection means (21) for detecting a force produced between the die cushion and the slide; and comparator means (95) for comparing a force detection value (Fd) detected by the force detection means with a predetermined threshold value (L1); wherein, when the force detection value becomes greater than the threshold value, it is so judged that the slide has come into collision with the die cushion. Thus, the collision is judged within a short period of time and reliably. The collision may be judged by comparing differentiated values (Fd?, Fd?) of the force detection value, slide position detection value (Y1d) or slide position instruction value (Y1c) or other related threshold values.

Abstract: In a clip apparatus (1) with a drive (2, 3) and a control (4), on the holder (6, 7, 17) of one of the clip closing work tools a force measuring device (9) is provided. Based on the measured force and through the control the drive is influenced and in the case of excessively high force values, the clip apparatus is stopped to avoid damage.

Abstract: A control device of a die cushion mechanism, by which a force between a slide and a die cushion may follow a commanded value even in the rapid acceleration or deceleration of the slide and, moreover, a problem such as vibration of the mechanism may be prevented in the gradual acceleration or deceleration of the slide. The control device includes a slide position detecting part, such as a position sensor, for detecting the position of the slide and a correcting part for correcting a current commanded value using an acceleration of the slide, obtained by second-order differentiation of the position of the slide detected by the position sensor.

Abstract: A control system, for a press machine including a plurality of die cushions, by which force control and position control may be suitably switched from one to another in each control device for each of the die cushions. The control system includes a plurality of control devices for controlling a servomotor of each die cushion and a switching signal generating part capable of collecting the judgment result of each control device. The switching signal generating part transmits a switching signal to each control device, in order to switch the control mode of each control device.

Abstract: A rivet monitoring system is provided which has a micro-strain or micro fluid pressure sensor that measures strains or pressures within a tool component. These measured signals are compared to a number of tolerance bands formed about median strain or pressure versus time curve. Various techniques are provided to analyze the measured data with respect to the tolerance bands to determine if a particular rivet set is acceptable.

Abstract: A riveting yoke assembly (11) comprises a yoke (30), a force applying mechanism (22) and a rivet forming device (34, 36). The yoke has a first end (38), a second end (40), and a middle section (42) coupled between the first and second ends (38, 40). An opening (44) is formed through the yoke between the first and second ends. The force applying mechanism (22) is coupled to the first end (38) of the yoke (30). The lower rivet forming device (36) is removably coupled to the second end (40) of the yoke. The lower rivet forming device (36) has a base end (46) attached to the second end (40) of the yoke (30) and a forming end (48) with a recess (50) to form rivets (17). The recess (50) has a concave, interior surface (52) having an annular step (54) positioned between a top edge (56) of the interior surface (52) and a bottom-most point (58) of the interior surface (52) in order to properly align the rivet (17).

Abstract: Apparatus is provided for monitoring the installation of a blind rivet to attach together top and bottom members. The blind rivet installation tool includes a housing having an anvil seated on the rivet head. A collet is reciprocable within the tool housing and carries jaws for gripping the mandrel of the blind rivet. Retraction of the jaws by the collet displaces the jaws and the mandrel axially and causes the mandrel head to axially collapse and radially expand the hollow shank of the blind rivet into engagement with the bottom member so that the rivet attaches the top member and the bottom member. A first transducer measures the axial load imposed on the mandrel. A second transducer measures the axial displacement of the collet and the jaws and the mandrel.

Abstract: A control device for a die cushion mechanism, for carrying out force control with high accuracy and at a high speed. The control device for controlling the force generated by the die cushion mechanism utilizes a press working cycle which is repeatedly carried out. A correcting part of the control device corrects each deviation in one working cycle based on a time-series of deviation data in the just before press working cycle. By repeating this operation, the deviation between the detected value and the commanded value may be converged toward zero. Therefore, the deviation may become smaller than that of the conventional feedback control, whereby it is possible to respond to a change in the commanded value in a short time.

Abstract: A device for determining the quality of a part includes a sensor for detecting a strain on a selected portion of a part forming machine. A controller utilizes the detected amount of strain to make a determination regarding the quality of a corresponding part. In one example, the sensor detects a compressive or tensile strain on a machine frame when the sensor is aligned to detect a strain parallel to a direction of a force applied during the part formation process. The controller uses one or more characteristics of the sensor output and determines whether the detected amount of strain is within an acceptable range. In one example, monitoring the strain during the formation of a plurality of acceptable parts provides information for determining the acceptable range. The disclosed arrangements allow for making part quality determinations without requiring a sensor to be “in line” with the load.

Abstract: Estimation sections which have beforehand learned a relationship between known connection data pertaining to connection design and unknown connection data pertaining to connection design for the known connection data estimate the unknown connection data for the known connection data in accordance wit an input of the known connection data, on the basis of the result of learning. The respective estimation sections are formed from a multilayer feedforward neural network in which layers constituted of a plurality of neurons are coupled together in a direction in which the layer runs from an input layer to an output layer by way of an intermediate layer.

Abstract: Devices are provided for detecting a mutual reference position of tool parts of a pressing tool, e.g., a punch and die. The device include (a) first and second reference elements that are moveable, by the pressing device, into a relative position that corresponds to a predetermined relative position of the first tool part and the second tool part as mounted in the mountings; (b) a control pressure generator that generates a control pressure when the first and second reference elements are moved into the relative position; (c) a switch that is activated by the control pressure; and (d) a detection unit that is activated by activation of the switch to detect the relative position of the first and second reference elements.

Abstract: A press forming method is disclosed, wherein press forming can be effected at high speed while maintaining the horizontal state of a slide plate in press-forming a work-piece by a press machine. A press machine is used in which the slide plate is pressed by a plurality of drive sources using servo-motors for driving. The speed of one of the plurality of drive sources is set to a target speed for production forming for the drive source, and by using a function that shows a delay in terms of a speed of the drive source and a load thereon and also using a load separately found, the respective speeds of the drive sources are found so as to eliminate the delay between the drive sources. Trial forming is repeated on the basis of the thus-found speed to derive conditions that enable press-forming at high speed while maintaining the horizontal state of the slide plate.

Abstract: A cutting head has upper part with at least one separating cutter, at least one stripping cutter, a first cutting edge, a force-measuring device operating on the piezo principle, and a first holding plate. A lower part of the cutting head includes at least one separating cutter, at least one stripping cutter, a second cutting edge and a second holding plate. The first cutting edge, the second cutting edge, and the force-measuring device serve to measure the height of the crimp. The first holding plate and the second holding plate serve to measure the pull-out force.

Abstract: A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or table for the robot or positioned at the end of robot am. The moveable gripping tool is mounted to the end of a moveable robot arm having a proximal portion also mounted to the base. The robot preferably comprises a six axis bending robot, in which the distal end of the moveable arm can move relative to the fixed gripping tool about three translational axes and three rotational axes. The gripping tools preferably incorporate force sensors which are used to determine overbends needed to get the desired final shape of the archwire. The robot may also include a resistive heating system in which current flows through the wire while the wire is held in a bent condition to heat the wire and thereby retain the bent shape of the wire.

Abstract: A method for adjusting the pitch and roll static torques (PST and RST) on a slider in a disk drive head-suspension assembly (HSA) during manufacturing assures that each HSA is manufactured with acceptable PST and RST values. The method includes measuring each slider's pitch and roll static attitudes (PSA and RSA) and determining each HSA's pitch and roll torsional stiffnesses. These values are then used to calculate the required amount of adjustment to PSA and RSA to achieve the desired values of PST and RST for each HSA. The suspension is then adjusted, such as by heating the flexure with a laser.

Abstract: A vertical position of a ram is directly detected by a ram position detector. A first speed arithmetic operating portion determines a first ram moving speed on the basis of a change of the detected position. A second speed arithmetic operating portion determines a second ram moving speed on the basis of a rotational number of a servo motor which is determined by a servo motor rotational number detector. A comparing portion compares the first ram speed with the second ram speed, and when a difference is equal to or more than a predetermined amount, a judging portion judges that an abnormality exists so as to immediately stop the servo motor and stop an operation.

Abstract: A crimping press has a tool receptacle arranged at a lower end of a pressing slider provided with a force-sensing device. The forces arising during the crimping operation are transmitted from the supporting surfaces of an upper tool to several points on the force-sensing device. Provided on each side of an upper fork and held by screws are two collars to which are transmitted, the crimping forces on either side of the supporting surface. With their heads, the screws hold the collars, while with their other ends the screws are engaged with the pressing slider. The collars transmit the crimping forces to the sensor elements of the force-sensing device.

Abstract: A tool is evaluated in response to a member of the tool being moved from a first position to a second position. In this evaluation, a first force is applied to the member. The first force is operable to move the member from the first position to the second position. In addition, a second force is sensed. This second force results from a resistance of the tool to the first force. Furthermore, it is determined whether the second force exceeds a predetermined value.

Abstract: A thread rolling machine forming a threaded member from a workpiece includes a die, a device for rotating the die, a device for generating a load applied to the die in a workpiece-feeding direction, a member that deforms under the applied load during a thread rolling operation, a strain gauge that generates a signal indicative of the deformation of the member under the applied load, and a computer that calculates the load applied during thread rolling operation based on the signal generated by the strain gauge. The computer can generate a feedback signal permitting control of the applied load generated by the thread rolling machine by controlling either the load generating device or the die-rotating device. An operating method for a thread rolling machine is also described.

Abstract: A position detecting device and a takeout apparatus capable of obtaining information on height or stage number of an object in a stack of objects by a two-dimensional image capturing device for an operation of taking out the object by a robot. A CCD camera is arranged at a position above a place where workpieces stacked in multiple stages are provided. An image processing device determines a size of the image of the uppermost workpiece in a two-dimensional image captured by the camera. The height or stage number of the workpiece is determined from the size of the workpiece image using a stored relation table or arithmetic expression representing relationship between the height or stage number of the workpiece and the size of the workpiece. For a plurality of kinds of workpieces, the relation table/arithmetic expression is stored for each kind of workpiece and selectively used in accordance of a mark on the workpiece which indicate the kind of workpiece.

Abstract: In a terminal crimped state testing method, in step S1, a reference waveform is created on the basis of a load when a terminal in a good crimped state is obtained, and the reference waveform is divided into plural reference waveform segments to set singular points. In step S2, the reference waveform segments containing singular points of the segments are integrated. In step S3, a characteristic waveform is created on the basis of the load when a crimping terminal to be tested is obtained. The characteristic waveform thus created is divided into plural sample waveform segments and the waveform segments corresponding to the reference waveform segments are integrated. In step S4, the integrated values of the reference waveform segments are compared with those of the sample waveform segments, thereby deciding whether the crimped state of the crimping terminal is good or not.

Abstract: An apparatus for mounting mechanical fasteners comprises first elements to set, limit and/or measure a path or a length or a distance when the fastener is being mounted. Said apparatus also comprises second elements to set, limit and/or measure at least one force component at the fastener, said force component being built up when covering or overcoming the path of the fastener, or by this fastener.

Abstract: A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or table for the robot or positioned at the end of robot am. The moveable gripping tool is mounted to the end of a moveable robot arm having a proximal portion also mounted to the base. The robot preferably comprises a six axis bending robot, in which the distal end of the moveable arm can move relative to the fixed gripping tool about three translational axes and three rotational axes. The gripping tools preferably incorporate force sensors which are used to determine overbends needed to get the desired final shape of the archwire. The robot may also include a resistive heating system in which current flows through the wire while the wire is held in a bent condition to heat the wire and thereby retain the bent shape of the wire.

Abstract: A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or table for the robot or positioned at the end of robot am. The moveable gripping tool is mounted to the end of a moveable robot arm having a proximal portion also mounted to the base. The robot preferably comprises a six axis bending robot, in which the distal end of the moveable arm can move relative to the fixed gripping tool about three translational axes and three rotational axes. The gripping tools preferably incorporate force sensors which are used to determine overbends needed to get the desired final shape of the archwire. The robot may also include a resistive heating system in which current flows through the wire while the wire is held in a bent condition to heat the wire and thereby retain the bent shape of the wire.

Abstract: A machine simultaneously caulks both axial ends of an object. The machine has an upper pressure plate having a first caulking punch mounted thereon is screwed to left and right ball threads at one side thereof, and a lower pressure plate having a second caulking punch mounted thereon screwed to the left and right ball threads at the other side thereof in such a way that the upper pressure plate and the lower pressure plate are moved relatively to each other along the same axis extending in a caulking direction.

Abstract: A method of operating a bending press, in particular an edging press, and a bending press for carrying out this method. For each drive of a drive arrangement, the actual pressing force is detected for the displaceable press beam during a bending process for the workpiece and a relative position of the pressing tool or tools by reference to the longitudinal extension of the press beams is determined on the basis of a force ratio. Different displacement paths of the drives and the displaceable press beam at the respective force-application point of the drive are then determined in an evaluation and/or computer unit, which is provided with a data memory for production and machine data, and corresponding control signals for the drive system are generated in the control unit and actuator elements of the drives are displaced by the displacement paths determined for each drive.

Abstract: A bottom dead center correction device for a servo press machine which can correct the bottom dead center with a high precision not achieved by a bottom dead center correction by a slide position detection device provided on a frame includes a bottom dead center sensor (11) and a temperature sensor (12) on a lower mold (10B) of a die (10). The bottom dead center of a set slide motion of slide (3) is corrected by the bottom dead center measurement value of bottom dead center detection sensor (11) and by the temperature drift of bottom dead center detection sensor (11) resulting from the temperature rise of die (10) due to molding and detected by temperature sensor (12). A bottom dead center correction of one micron unit not previously achieved becomes possible. The bottom dead center correction device also can be provided as one which corrects for the fluctuations in the bottom dead center resulting from deformations in all of the construction parts and the die of the servo press.

Abstract: A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or table for the robot or positioned at the end of robot arm. The moveable gripping tool is mounted to the end of a moveable robot arm having a proximal portion also mounted to the base. The robot preferably comprises a six axis bending robot, in which the distal end of the moveable arm can move relative to the fixed gripping tool about three translational axes and three rotational axes. The gripping tools preferably incorporate force sensors which are used to determine overbends needed to get the desired final shape of the archwire. The robot may also include a resistive heating system in which current flows through the wire while the wire is held in a bent condition to heat the wire and thereby retain the bent shape of the wire.

Abstract: Methods and apparatus are provided for monitoring crimping of metal end fittings onto electrically insulating core rods. The force and/or pressure applied to the metal end fittings by crimping jaws are monitored during crimping. The distance travelled by the crimping jaws is also measured during crimping. A change is detected in the relationship between the force and/or pressure and the distance travelled by the crimping jaws, such as by detecting a non-increasing force and/or pressure with an increasing distance. The methods and apparatus of the present invention may provide for detection and/or prediction of cracks in the electrically insulating core rods to improve the crimping process.

Abstract: A driving cam for seaming a container includes a cam base, an annulus, a bar, and first and second load cells. The annulus is defined by an internal profile and an external profile and is formed with an active sector. The active sector has a first end and a second end and is defined by the internal profile and the external profile. The external profile for defining the active sector is formed with an ascending ramp at the first end and a descending ramp at the second end with a plateau located between the ascending ramp and the descending ramp. The internal profile for defining the active sector is formed with a first recess at the first end and a second recess at the second end with a flat inner face located between the first recess and the second recess. The bar is connected to the cam base and is located within the annulus below the active sector. The load cells are connected between the bar and the flat inner face adjacent to the recesses.

Abstract: The invention proposes a method for clamping a pipe with a hose or a pipe with the aid of a compression sleeve, in which the influence of dimensional tolerances of the components on the quality of the compressed connection is significantly reduced. In the method according to the invention, the pressing force between a compression tool and the compression sleeve as well as the advancing distance of the compression tool are determined and evaluated.

Abstract: A crimping press provides increased accuracy and precision. Both a rotative measuring system, such as an encoder arranged at a motor shaft, and a linear measuring system such as, for example, a measuring head and a glass scale, are provided. The linear measuring system may be coupled between a tool holder and the fixed press stand. The measurement values generated by the rotative measuring system and the measuring values of the linear measuring system are fed to a regulating circuit for regulation of crimping height.

Abstract: An apparatus for mounting mechanical fasteners comprises first elements to set, limit and/or measure a path or a length or a distance when the fastener is being mounted. Said apparatus also comprises second elements to set, limit and/or measure at least one force component at the fastener, said force component being built up when covering or overcoming the path of the fastener, or by this fastener.

Abstract: A tool controlling apparatus includes a position controlling unit and a torque controlling unit for carrying out the conversion between the position control and the torque control of the tool for pushing the work, and the conversion of the torque in the torque control in a moment by using a servo motor in the course of process of the work.

Abstract: An apparatus for mounting mechanical fasteners comprises first elements to set, limit and/or measure a path of a length of a distance when the fastener is being mounted. Said apparatus also comprises second elements to set, limit and/or measure at least one force component at the fastener, said force component being built up when covering or overcoming the path of the fastener, of by this fastener.

Abstract: The method for quality assurance of crimping connections made by a crimping device having an exchangeable tool with two tool parts uses a tool that is provided with an electronic data storage device. The electronic data storage device stores tool-specific nominal data derived from a nominal force-stroke characteristic line of a nominal crimping action of the tool. A crimp connector is fastened to the end of an electrical cable by placing the end of the electrical cable and the crimp connector between the two tool parts and moving the two tool parts relative to one another for carrying out the crimping action. The force-stroke characteristic line of the two tool parts is measured during the crimping action. The measured force-stroke characteristic line is compared to the stored nominal data.

Abstract: A sheet fabrication machine is equipped with different servo motors for actuating its upper tool and its lower die. A direction converting mechanism is provided to each of the tool assembly and the die assembly so as to convert the non-vertical forces output by the servo motors into vertical forces that enable the tool and die to move relative to each other to effect work on a workpiece placed therebwtween. The sheet fabrication machine is moreover equipped with a system and logic for automatically measuring the length of the tool and for providing a setting from which the operation of the tool can be referenced. Additional features provisioned into the sheet fabrication machine include look ahead functions for optimizing the operational speed of the machine while minimizing the noise generated as a result of the operation.

Abstract: The invention concerns a process for checking the quality of formings executed by a machine for forming tube ends, according to which the forming machine is equipped with a force transducer (33) which is capable of measuring the reactive axial force exerted by the tube on the tool (9a) in a forming pass and, for each forming, in a preliminary learning phase, the maximum reactive axial force exerted by the tube on the tool (9a) is measured, the quality of the executed forming is verified in conventional manner and the value of the maximum reactive axial force obtained in a forming of a quality meeting the required conditions is recorded, then, in each forming pass, the maximum reactive axial force exerted by the tube on the tool (9a) is measured, the value of the said maximum axial force is compared with the recorded reference value and the forming is validated if the measured maximum axial force corresponds to the reference force with a predetermined tolerance.

Abstract: A semiconductor manufacturing apparatus and a method of manufacturing a semiconductor device are provided. A horizontal driver (111) and a vertical driver (112) are controlled to move a punch holder (110), or an end portion (101T1) of a punch (101), within a plane defined by first and second directions (D1, D2). A tip (101A) of the punch (101) is brought into contact with leads (11), with a punch-side forming surface (101S) and a die-side forming surface (151S) maintained in parallel relationship. A pressurizer (131) is controlled to move the end portion (101T1) in a fourth direction (D4) toward the die-side forming surface (151S), and the punch-side forming surface (101S) and the die-side forming surface (151S) hold the leads (11) therebetween. A pressure detector (121) detects a load placed upon the punch (101).

Abstract: A laminated ring is manufactured by severing a cylindrical drum, which comprises a sheet of maraging steel with welded opposite ends, into a plurality of rings of predetermined width, rolling the rings to a predetermined target circumferential length, correcting circumferential lengths of the rings, aging and nitriding the rings, and laminating the rings into a laminated ring for transmitting power in a continuously variable transmission. A load applied to a circumferential edge of each of the rolled rings and a load applied to another circumferential edge thereof are measured while supporting an inner circumferential surface of the ring and applying a tensile load in a direction to expand the ring. The difference between circumferential lengths of the circumferential edges of the ring is detected based on the difference between the loads applied to the circumferential edges when the difference between the loads is maximum.

Abstract: To provide a controller of an automation device in a forging press capable of preventing the occurrence of a phenomenon in which raw materials are progressively transported in a partially lacked state and enhancing forging accuracy productivity, an inlet side transportation device includes a raw material detector for detecting whether a raw material to be supplied to a transfer feeder has been supplied or not and a controller for controlling the feed operation of the transfer feeder.

Abstract: A hydraulic machine for operation such as for pressurizing a workpiece and molding products from materials by using a reciprocation mechanism comprising a hydraulic cylinder unit. The cylinder unit comprises two types cylinder chambers having different cross-sectional areas, and a third or plural cylinder chambers. Hydraulic oil sent out from a hydraulic pump driven by a servo motor, is fed through a hydraulic circuit into the cylinder unit. The shifting position of the reciprocation movement is detected, and path switching in the hydraulic circuit and revolving operation of the servo motor are controlled on the basis of the detected shifting position. In case the reciprocation movement is used for pressurizing a workpiece by a die, the hydraulic oil is fed to the cylinder chamber for forward of small cross-sectional area until slightly before the die comes into contact against the workpiece, and the die shifts at high speed relative to a workpiece.

Abstract: A crimping press having a motor, a gear and first guides, at which a crimping ram is guided, arranged at a frame. A shaft driven by the gear has an eccentric spigot at one end and a resolver for the detection of the rotary angle coupled on at the other end. The crimping ram includes a sliding member guided in the first guides and a tool holder with force sensor and retaining fork. The sliding member stands in loose connection with the eccentric spigot, wherein the rotational movement of the eccentric spigot is translated into a linear movement of the sliding member. The tool holder usually actuates a tool which, together with an anvil belonging to the tool, produces the crimped connection. For calibration of the force sensor, a crimping simulator is used in place of the tool. For input of operational data and commands to a control, an operating terminal has a rotary knob and a keyboard. A display is provided for visualization of data.