Abstract: Methods and apparatus for shaping workpieces are described in which data representing the surface form of the workpiece is analysed to determine characteristics of curvature of the surface, and these characteristics are used to determine the size and form required for a tool to apply shaping treatment to all parts of the workpiece surface. Measurements of the actual workpiece are then compared with data relating to the required workpiece form, to determine the amount and distribution of material to be removed from the workpiece. A tool path for moving the tool over the workpiece to achieve the required shaping operation is then determined, and the tool and tool path data are provided to a shaping machine to carry out the shaping operation. The shaping tool may comprise an elastomeric body covered in a flexible cloth on which rigid pellets containing abrasive material are fixed. The specification discloses methods of manufacturing such tools, and also discloses methods for conditioning the pelleted cloth.

Abstract: A method for generating a tool path to manufacture a part using a computer numerical control system includes the steps of; generating an initial design part geometry from a geometry modelling program as an input, creating a pre-finished in-process workpiece geometry before a finishing process, controlling a stock thickness distribution of the pre-finished in-process workpiece geometry by following the tool path, wherein the stock thickness distribution is based on at least one ruling function on a basis of at least one predetermined direction, wherein the at least one ruling function is used to determine a stock thickness at a tool location to obtain a variable stock thickness distribution around a design part; locating at least one tool to be defined with respect to the initial design part geometry.

Abstract: A method and system for aggregate programming a computer numerical control (CNC) machine that includes (a) shifting a control point from an aggregate base point to a center tip of a tool being programmed, thereby enabling tool length and diameter adjustment along with C-axis aggregate rotation during a machine activity. The shifting includes (i) activating a tilted work plane (TWP); and (ii) shifting the control point to the tip of the tool using a tool length compensation. The system and method also include (b) implementing an activity on the CNC machine using the shifted control point and C-axis aggregate rotation. In some cases, activating the TWP comprises using a special machine control code such as g-code G68.2. In some cases, shifting the control point to the tip of the tool using a tool length compensation comprises using a special machine control code such as g-code G43.

Abstract: A method for controlling a cutting tool in a CNC machine and a device using the method receives contours of workpieces generated by a first measuring machine, inputs the first contour parameters into a calculation model to output first compensation values of the cutting tool, the calculation model being a time sequences model established according to contour sets of the workpieces, and the contour sets include at least one historical contour of the workpieces. The device further determines whether the first compensation values of the cutting tool are greater than, equal to or smaller than a preset value, and sends the first compensation values of the cutting tool to a machine.

Abstract: Processing data during polygon processing is stored in the processing data storage unit 17. The position detection unit 18 detects a cut-start position A and a cut-end position B of a workpiece based on a change in the processing data. The position detection unit 18 detects a processing surface based on the cut-start position A and the cut-end position B.

Abstract: The invention of a device has four threaded bolts that engage cooperatively threaded apertures in a base. These thread bolts hold the device in a temporary yet stationary position. The device has non-magnetic metal which allows test indicators to display accurate results free from any magnetic fields. The device has a precision bore of a nominal size. The radial value of the nominal size precision bore provides for mathematical calculation of the spindle centerline to work piece distance for measuring. The device has undercuts on both of its sides to aid in removing by hand. These undercuts allow the device to pivot from its stationary position for removal without damaging the planar surface. Alternatively, the device has four magnetic inserts, pocketed upwardly from the bottom surface.

Abstract: A machine is disclosed for use in duplicating features of an existing key within a key blank. The machine may have an identification module configured to capture data associated with the features of the existing key, a fabrication module configured to cut the features in the key blank based on the data, a user input device, and a controller in communication with the identification module, the fabrication module, and the user input device. The controller may be configured to regulate operation of the identification module and the fabrication module, and to receive input from a user via the user input device. The input may be indicative of the user being a first type of user or a second type of user. The controller may also be configured to selectively implement one of a first mode of operation or a second mode of operation based on the input.

Abstract: A tool changer includes at least one tool changer unit, wherein the at least one tool changer unit includes: a tool holder that receives and holds a tool; a base member that supports the tool holder so that the tool holder can be slid along a longitudinal direction of the tool; and a moving mechanism that slides the tool holder relative to the base member.

Abstract: A numerical controller controlling a five-axis machining machine having three linear axes and two rotation axes acquires a linear-axis-caused compensation amount associated with a combination of an instructed linear axis position and linear axis movement direction and an rotation-axis-caused compensation amount associated with a combination of an instructed rotation axis position and rotation axis movement direction, calculate a translation/rotation compensation amount based on the linear-axis-caused compensation amount and the rotation-axis-caused compensation amount, and adds the calculated translation/rotation compensation amount to the instructed linear axis position.

Abstract: A machine tool includes a workpiece holding unit to hold a workpiece. A tool holding unit holds a tool. At least one of the workpiece holding unit and the tool holding unit is drivingly rotatable or drivingly movable in a predetermined direction to machine the workpiece with the tool. Temperature sensors are attached to members constituting the machine tool. An estimator calculates an environmental temperature system thermal displacement amount due to a heat source outside the machine tool. A correction magnification processor calculates an environmental temperature system thermal displacement correction amount. Another estimator calculates a driving system thermal displacement amount due to a heat source in the machine tool. A thermal displacement correction amount adder obtains and outputs a total thermal displacement correction amount based on which the machine tool performs thermal displacement correction control.

Abstract: A cam profile data creation apparatus sets cam profile data in which a phase of a drive shaft is associated with a displacement (set displacement) of a driven shaft, a rotation speed of the drive shaft, and an allowable error for the displacement of the driven shaft. A displacement (predictive displacement) of the driven shaft when the drive shaft rotates at the set rotation speed is found based on the set cam profile data, the set displacement and the predictive displacement are displayed to be comparable, and further a form of the display is changed depending on whether an error between the set displacement and the predictive displacement falls within the range of the allowable error.

Abstract: A controller of a cutting device includes a first reference point detection processor detecting an actual position of a first reference point on a top surface of a first protrusion of a magazine, a second reference point detection processor detecting an actual position of a second reference point on a top surface of the second protrusion of the magazine, a sensor offset calculation processor calculating an offset of an actual position of a tool sensor of the magazine with respect to a designed position of the tool sensor based on the first reference point and the second reference point, a stocker offset calculation processor calculating an offset of an actual position of the stocker of the magazine with respect to a designed position of the stocker based on the first reference point and the second reference point, and a movement control processor controlling a movement mechanism based on the offset of the tool sensor and the offset of the stocker.

Abstract: In this machining method, in which a rotary tool is moved relative to a workpiece and/or the workpiece is moved relative to the rotary tool so as to machine a curved surface on said workpiece, rotation in the direction of said curved surface is added to the workpiece such that the positions of reversal marks left on the curved surface per tool path are dispersed in the direction of said rotation.

Abstract: Pneumatic devices for implementing finite state machines are provided. In some implementations, the pneumatic device comprises a state register component configured to hold one of a set of possible states. The pneumatic device also comprises a next-state logic block component configured to determine a next state for the state register component based at least in part on a current state of the state register component. A pneumatic programmable logic array (PLA) implementing a next state logic block of a finite state machine is also provided. The pneumatic PLA comprises an elastomeric membrane containing a pattern of holes and disposed between two channel layers of a pneumatic device. The PLA receives one or more input values representing a current state of a state register and one or more input values representing a user input and calculates one or more output values representing a next state for the state register.

Abstract: Disclosed are systems and methods for detecting a graphic card that visually describes an operational mode of a rotatable interface component via a plurality of curves for rotationally-varying parameters, determining the operational mode that is visually described on the graphic card, and loading the operational mode to the rotatable interface component, where the operational mode specifies operations for a motor such that the motor generates torque on the interface component based on the curves for the rotationally-varying parameters that are shown on the graphic card.

Abstract: An electronic key duplicating machine includes a base, on which a first support is mounted for a clamp for, at separate moments, an original key and a blank key, an optical reader sensing the bitting of the original key, and a milling cutter reproducing the bitting on the blank key, which are mounted on a second support rigid with the machine base, the clamp being movable along the X axis and the Y axis relative to the second support, a unit memorizing the bitting of the original key sensed by the optical reader and controlling and commanding movement of the clamp and operability of optical reader and milling cutter, wherein the second support is of C-shape with its opening facing the clamp, and the optical reader is mounted on horizontal branches of the second C-shaped support, while the milling cutter is mounted in the cavity defined by the horizontal branches.

Abstract: A numerical control device controls a machine tool that includes a turret to which a tool is attached, the turret being configured to move along an X-axis and rotate on an H-axis, and further includes a workpiece rotatable on a C-axis. There is no direct movement of the machine tool along a Y-axis that is orthogonal to the X-axis. The numerical control device includes an analyzer that analyzes a y-axis rapid-traverse command in a Y-axis interpolation mode; a C-axis interpolation processor that interpolates a C-axis rotation angle range in response to the analyzed Y-axis rapid-traverse command; and an X-axis interpolation processor that interpolates an X-axis position based on the interpolated C-axis rotation angle range, where the numerical control device rotates the C-axis movement at a constant velocity during the entire C-axis rotation angle range, and accelerates an X-axis velocity of the turret accordingly, to thereby perform an operation.

Abstract: A scroll machining method for forming a wall part (21) configured in a scroll shape on a surface of a workpiece (W), which includes a first scroll machining step of machining one of the wall surfaces (22, 23), in which a tool (14) is moved relative to the workpiece from an outside of the workpiece (W) toward a center part (25) along a predetermined path (L1) while turning the rotary table (17) in a first direction (R1); and a second scroll machining step of machining the other of the wall surfaces (22, 23), in which the tool (14) is moved relative to the workpiece from the center part (25) of the workpiece (W) toward the outside by returning along the predetermined path (L1) while turning the rotary table (17) in a second direction (R2) opposite to the first direction (R1).

Abstract: A rotation instruction is transmitted to a motor in a state where a workpiece placement table connected to a rotation shaft of the motor is clamped by a clamp mechanism provided in a rotation table, and a clamp torque is measured based on motor torque information in accordance with the rotation instruction and a change in rotation shaft state (a rotation position, a rotation speed, and the like).

Abstract: A master servo motor and a slave servo motor that synchronously drive for rotation a master main spindle provided with a center that supports one end of a work piece and a slave main spindle provided with a center that supports the other end of the work piece are included. Before grinding, a slip detection cycle that detects a limit current value for the servo motors, at which the work piece and the centers slip, is executed and, during grinding, a grinding condition is changed to prevent a slip between the work piece and the centers in advance at the time when any one of current values of the servo motors has reached a slip threshold value set on the basis of the limit current value.

Abstract: Methods and devices for milling a channel-shaped cavity by a five-axis computer numerical control (CNC) machine by selecting a workpiece to be machined, determining cutting tool flow along the channel-shaped cavity, determining cutting tool in-depth penetration, determining a trochoid path, and determining auxiliary movements.

Abstract: A path display apparatus includes a first position command acquiring unit that acquires first position command for motors, a first position feedback acquiring unit that acquires first position feedback of each of the motors, a correction data acquiring unit that acquires correction data generated for each of the motors, a second position command calculating unit that subtracts the correction data from the first position command to calculate a second position command, a second position feedback calculating unit that subtracts the correction data from the first position feedback to calculate second position feedback, a command path display unit that displays a command path of the tip point of the tool, based on the second position command; and a feedback path display unit that displays a feedback path of the tip point of the tool, based on the second position feedback.

Abstract: A machine tool includes a machine tool main body, a ram which is supported with respect to the machine tool main body in a movable manner, a main shaft which is supported by the ram in a drivable and rotatable manner, an attachment which can be attached to and detached from a tip end portion of the ram and includes a driving shaft rotated according to rotation of the main shaft and a tool provided on the driving shaft, and a NC device which performs a numerical control based on machining data, and performs machining of a processing target. The control method of a machine tool includes a step of decreasing at least one of a ram overhang amount or a feeding amount when stress applied to the attachment is larger than allowable stress of the attachment based on a machining condition including a diameter, a depth of cut, and a feeding amount of the tool, and information including the ram overhang amount, a shape of the attachment, and a material of the processing target.

Abstract: An apparatus for sharpening a beet knife has a plurality of roof-shaped blades next to each other on a knife body has a centering device carrying a centering piece and movable in a Y-direction, a milling device with a mechanically rotatable side miller with a roof-like milling edge movable in the Y-direction toward and away from the centering device, and a guide extending in an X-direction substantially perpendicular to the Y-direction. A grab shiftable in the X-direction on the guide is designed to hold the knife to be sharpened, and respective drives are connected to the centering and milling devices for moving same toward and away from each other in the Y-direction and to the grab for moving same along the guide in the X-direction.

Abstract: A controller including a detecting member detecting a machining position where a pivoting axis is reversed in machining by the machine tool based on the control data, an allowable position error setting member setting an allowable position error between a commanded machining position and an actual machining position, an allowable acceleration deciding member deciding the allowable acceleration about the pivoting axis based on a distance from the machining position of the reversed axis to a center of the pivoting axis and based on the allowable position error being set, and a controlling member controlling a velocity about the driving axis based on the allowable acceleration.

Abstract: The described embodiments relate generally to device housings and more particularly to methods for blending multiple surfaces of a device housing during a machining process. A method is disclosed that prevents the formation of steps and allows for a smooth transition between flat and curved surfaces by using a profile cutter with an obtuse angle. The profile cutter can extend into the area in which the flat surface is desired while angling upwards and away from the part. This angle can ensure that the boundary between the flat surfaces and curved surfaces forms a shallow peak rather than a step. A shallow peak can be relatively easier to blend during a polishing operation than a step. As a result, the boundaries between surfaces can be hidden from the user of the device and the manufacturing process can be more efficient.

Abstract: A program controlled machine tool, including a bed-like substructure, a machine frame having two vertical and parallel side walls, and a compound slide having a longitudinal slide which can travel in the direction of the Y-coordinate axis on the two side walls of the machine frame. A cross slide is guided in such a way that it can travel in the direction of the X-coordinate axis. A machining unit can travel in the direction of the vertical Z-coordinate axis and has a working spindle. A workpiece table arrangement arranged on the substructure in front of the side walls. The workpiece table arrangement is arranged on the front partial area of the flat base and the cross slide has a length in the direction of the Y-coordinate axis which corresponds approximately to the diameter of the workpiece table and/or the working space in the Y-direction.

Abstract: A machine tool has a holding portion, spindle, feed device, controller generating a position control signal according to machining data and controlling a feed motion of a drive unit according to the position control signal, reaction force detecting section for determining a reaction force the tool receives from the workpiece during machining, displacement amount calculating section for determining displacement of the tool with respect to a target control position based on the reaction force, and compensating section receiving the displacement amount and adding correction data for eliminating the displacement amount to the position control signal or the machining data.

Abstract: The embodiments described herein relate to methods, systems, and structures for cutting a part to form a highly reflective and smooth surface. In some embodiments, the part includes substantially horizontal and vertical surfaces with edges and corners. In described embodiments, a diamond cutter can be used to cut a surface of the part during a milling operation where the diamond cutter contacts the part a number of times with each rotation of the spindle of a milling machine. In some embodiments, a complex feature having planar and curved surfaces is cut into a part.

Abstract: A method of forming a part from a workpiece mountable on a porous spoil-board on the worktable of a CNC machine having means for applying a negative pressure on the underside of the workpiece, providing a pressure differential across the mounted workpiece, and a cutting tool displaceable along x, y and z axes, including programming the controller of the machine to generate a cutting pattern, computing the area of the part, comparing the computed area value of the part with a predetermined area value and positioning the cutting tool along the Z-axis to provide less than a through cut of the workpiece where the computed area value is less than the predetermined area value and providing a through cut when a computed area value exceeds the predetermined area value, mounting the workpiece on the worktable, actuating the negative pressure applying means and operating the machine to execute such program.

Abstract: A method for machining may include providing a workpiece with a major (e.g., top) surface and an edge at a perimeter thereof. The method may also include providing a machining tool including an outer rotary cutter and an inner rotary cutter. The workpiece may be machined in a single pass of the machining tool around the perimeter thereof. Machining the workpiece may include simultaneously machining the edge with the inner rotary cutter and machining at least a portion of the major surface with the outer rotary cutter. Accordingly, the edge and at least a portion of the major surface of the workpiece may be simultaneously machined in a single pass. The inner rotary cutter may also simultaneously machine an undercut at the edge of the workpiece. A related machining apparatus including the machining tool is provided. Further, a computer readable medium may include program code for performing the above-described operations.

Abstract: The embodiments described herein relate to methods, systems, and structures for cutting a part to form a highly reflective and smooth surface thereon. In some embodiments, the part includes substantially horizontal and vertical surfaces with edges and corners. In described embodiments, a diamond cutter is used to cut a surface of the part during a milling operation where the diamond cutter contacts the part a number of times with each rotation of the spindle of a milling machine. The diamond cutter has a cutting edge and a land. The cutting edge cuts the surface of the part and the land burnishes the surface of the part to form a highly reflective and smooth surface. Thus, the diamond cutter cuts and burnishes portions of the part, thereby eliminating a subsequent polishing step.

Abstract: Methods and devices for milling a channel-shaped cavity by a five-axis computer numerical control (CNC) machine by selecting a workpiece to be machined, determining cutting tool flow along the channel-shaped cavity, determining cutting tool in-depth penetration, determining a trochoid path, and determining auxiliary movements.

Abstract: Technology for milling selected portions of a workpiece by a cutting tool of a numerical control machine is described. The described technology provides methods and apparatuses for milling areas of a part so that more aggressive machining parameters can be used in the toolpath, thereby resulting in reduced machining time and load. The described technology additionally determines directions of the tool axis vector at points along a toolpath in order to achieve a desired part shape while optionally maintaining high material removal rates.

Abstract: The present invention relates generally to deformation machining systems and methods that combine, in a single machine tool setup, the machining of thin structures and single point incremental forming (SPIF), such that novel part geometries and enhanced material properties may be obtained that are not achievable using conventional machining or forming systems and methods, individually or collectively. Important to many applications, lighter weight parts may be produced at lower cost using a conventional 3-axis computer numerically controlled (CNC) machine tool or the like, instead of the conventional 5-axis CNC machine tool or the like that is typically required.

Abstract: The purpose of the present invention is to provide a system for correcting thermal displacement of a machine tool, said system being capable of evaluating the amount of thermal displacement with a column front face serving as a reference position, and being capable of performing thermal displacement correction with good precision even when the amount of thermal displacement of a table is not uniform. For this purpose, the system is provided with, for example: a position detector temperature sensor (41-6); table temperature sensors (41-1 to 41-5); and a displacement correction device.

Abstract: A cutting device for a mill plate including a cutting tool supported for movement in a Y-direction and cutting in a Z-direction, and a conveyor for conveying a mill plate in the X-direction. A measuring device is movable in the X-direction along one side of a mill plate supported on the conveyor to map the X-axis and Y-axis positions of the mill plate one side. Positioning guides adjacent one side of the conveyor are adjusted in the Y-direction to follow the mapped Y-axis position of the mill plate one side at the X-axis position of the mill plate one side aligned with the positioning guides as the mill plate is conveyed in the X-direction. A clamp on the side opposite the mill plate one side is adapted to push the mill plate opposite side in the Y-direction to maintain the mill plate one side in engagement with the positioning guides.

Abstract: A machine tool has a holding portion, spindle, feed device, controller generating a position control signal according to machining data and controlling a feed motion of a drive unit according to the position control signal, reaction force detecting section for determining a reaction force the tool receives from the workpiece during machining, displacement amount calculating section for determining displacement of the tool with respect to a target control position based on the reaction force, and compensating section receiving the displacement amount and adding correction data for eliminating the displacement amount to the position control signal or the machining data.

Abstract: A plunge milling method includes: a) the area of material that is to be removed is enclosed by a plurality of milling paths, each milling path defining end positions of a milling head during the formation of plunge milling bores; b) to each milling path there is allocated a guide curve for the tool axis, each guide curve defining initial positions of the milling head during the formation of plunge milling bores; c) during the formation of plunge milling bores, the tool axis is oriented, as a function of a milling path and the respective guide curve, so that there is no danger of collision of the milling tool with a contour formed by plunge milling; d) for each milling path, bore axes for plunge milling bores are determined as a function of the respective guide curve, corresponding to a prespecified overlap of milling bores formed along the milling paths.

Abstract: Provided is a numerically-controlled machine tool (100) provided with: a tool measuring sensor (104) that measures the length and diameter of a tool (101); a workpiece measuring sensor (105) that measures the three-dimensional shape, and position and orientation of a workpiece (1) in a non-contact manner by laser beam etc.; and a control device (106), which, after determining the position of the machining starting point and the slope of a reference plane on the basis of information from the workpiece measuring sensor (105), on the basis of an inputted machining program, controls the movement of a main axis (102) etc. such that the workpiece (1) is machined from the information from the sensors (104, 105), and the position of the machining starting point and the slope of the reference plane, and controls the movement of the main axis (102) etc.

Abstract: A milling machine has a base, a work platform mounted movably on the base, and a ruler mounted on the work platform. The work platform is movable relative to a base axis. The thermal compensation system includes a sensor and a control unit. The sensor is configured to be mounted on the base for sensing a position of each of the work platform and the ruler relative to the base axis. The control unit is coupled to the sensor, and determines a work platform displacement and a ruler displacement according to the positions sensed by the sensor. The control unit further calculates a compensation value based on the work platform displacement and the ruler displacement. The control unit is configured to correct the position of the work platform relative to the base axis according to the compensation value.

Abstract: A machining device has a machine head capable of displacement along at least three translation axes X, Y, Z for machining an immobile part fixed above the machining head. The machining head is maintained in a constant orientation by at least three articulated connecting rods. Two connecting rods define together with the machining head and with a first Y carriage, on which they are articulated, an deformable articulated parallelogram in the XZ plane. Another connecting rod is articulated on the machining head and on a second Y carriage and the second Y carriage is capable of displacement along Y on a second X carriage capable of displacement along X. The relative movement along X of the Y carriages results in a displacement in the Z direction. Several devices can be positioned in a plurality of tunnels, these tunnels being arranged so as to share several means.

Abstract: An offhand recoil grip is described. In one disclosed embodiment, a recoil grip has a mounting portion to connect to a grip mount of a handgun, the mounting portion further having an offset support portion extending from the mounting portion toward the top and front of the handgun, the offset support portion having a second planar surface offset from the first planar surface of the mounting portion to allow a slide to move between the recoil grip and a receiver of the handgun, and a lateral grip pad coupled to the offset support portion, the lateral grip pad extending laterally away from the grip mount of the handgun to provide a thumb contact point for a non-trigger hand to reduce recoil in a handgun when fired. Other embodiments are described involving a method of using a recoil grip, recoil grips with different attachments, for different weapons, etc.

Abstract: The present invention provides a method for machining a part from a workpiece. The workpiece is divided into a plurality of sectors and a plurality of fiducials are disposed within each sector. The separation distance between each fiducial is then calibrated to a workpiece distance unit. The present invention then includes the steps of a) positioning the workpiece into the desired position relative to a cutting machine; b) calibrating the cutting machine to the workpiece distance units of one sector; c) cutting one sector with the calibrated cutting machine; d) repeating steps a-c until the part is completed.

Abstract: A machine tool 1 comprises a bed 11, a column 12, a spindle head 15, a spindle 16, a saddle 17, a table 18, a feed mechanism for moving the spindle head 15, the saddle 17 and the table 18 in Z-axis, Y-axis and X-axis directions respectively, a position detector for detecting the positions of the spindle head 15, saddle 17 and table 18, a controller for feedback controlling the feed mechanism, a position detector 51 for detecting the position of the spindle head 15, a position detector 54 for detecting the position of the spindle head 15, a position detector 57 for detecting the position of the table 18, and a measurement frame 50 which is configured with a different member from the bed 11 and the column 12 and on which readers 53, 56, 59 of the position detectors 51, 54, 57 are disposed.

Abstract: A system that allows a material to be marked while still on the CNC tooling table and allows an operator to input marking information just prior to, or even during, the tooling cycle. The present invention comprises a sequence controller associated with a computer readable medium and adapted for communication with the CNC controller. An HMI device and a marker controller are also connected with the sequence controller. A lifter assembly is connected with the sequence controller to raise and lower a marker assembly. The lifter assembly is connected to the gantry of the CNC tooling system with an adaptor block. The present invention provides the advantage of reduced time when compared to marking the part at a separate station remotely located from the CNC system, and allows the operator to input marking information just prior to or during the CNC tooling cycle.

Abstract: A machining method of a press die having a pierce cutter and a secondary relief-clearance area recessed inward relative to a profile of the pierce cutter. A plunge cutting tool has an edge portion protruding from an outer circumference of a tool body and can carve while rotating and moving in an axial direction of the tool body. While rotating the plunge cutting tool with an axis of the tool body being approximately parallel to a surface of the pierce cutter, the plunge cutting tool is relatively moved along the profile of the pierce cutter. The plunge cutting tool is also relatively moved in the axial direction of the tool body along the shape of the pierce cutter and the secondary relief-clearance area in a piercing direction each time the plunge cutting tool is relatively moved by a predetermined pitch.

Abstract: Provided are: a double grasping mechanism including a double grasped part and a double gripping mechanism; a spindle, a holder holding mechanism, a main-spindle, and a holder holding device each including a double gripping mechanism; and a tool holder; a chuck holder; and a clamp holder. The double grasped part is formed by an outer pull stud and an inner pull stud. The double gripping mechanism is formed by: an outer gripping mechanism including an outer large-diameter part, an outer small-diameter part, an outer draw bar, and outer balls; and an inner gripping mechanism including an inner large-diameter part, an inner small-diameter part, an inner draw bar, and inner balls. The tool holder includes the outer pull stud. The chuck holder includes the outer pull stud and the inner pull stud. The clamp holder includes the outer pull stud and the inner pull stud.

Abstract: A machining method of a press die having a pierce cutter and a secondary relief-clearance area recessed inward relative to a profile of the pierce cutter is provided. A plunge cutting tool having a tool body and at least one edge portion provided on an outer circumference of an end of the tool body is used, the edge portion being protruding from the outer circumference of the tool body and being capable of carving while rotating around an axis of the tool body and moving in an axial direction of the tool body. While rotating the plunge cutting tool with an axis of the tool body being approximately parallel to a surface of the pierce cutter, the plunge cutting tool is relatively moved along the profile of the pierce cutter. The plunge cutting tool is also relatively moved in the axial direction of the tool body along the shape of the pierce cutter and the secondary relief-clearance area in a piercing direction each time the plunge cutting tool is relatively moved by a predetermined pitch.

Abstract: A module for on-line vibration detection and adjustment and machining center using the same are provided in the present invention, wherein the module is disposed at the machining center having an interface of feedrate override and an interface of spindle override and the inverter. The module comprises at least one vibration sensor for detecting the vibrating status of the machining center, thereby generating corresponding at least one sensing signal and a processor for processing the at least one sensing signal so as to generate a spindle adjusting signal for the interface of spindle override and the inverter and a feedrate adjusting signal for the interface of the federate override. The computer numerical controller receives the spindle adjusting signal and the feedrate adjusting signal from the interface of the spindle override and federate override respectively and accordingly controls the feedrate and spindle rate of the machining center.