JP2007160453A - Oscillation mechanism of tape lapping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oscillation mechanism of a tape lapping device, which dispenses with a dedicated driving device for oscillating a workpiece in the axial direction to make oscillating motion. <P>SOLUTION: In this oscillation mechanism of a tape lapping device, a pair of arms 4, 4, a pair of shoe assemblies 5, 5 supported on the paired arms 4, 4, and an arm opening and closing device 6 are integrally formed as an arm unit 10 to move in the axial direction of a workpiece. The arm unit 10 is supported on a bed 7 to move in the axial direction (X-axis direction) by an axial driving device 8 through a direct acting bearing (a linear guide), a ball spline or a roller spline 11, 12, and in tape lapping. The arm unit 10 oscillates the workpiece in the axial direction by the axial driving device 8 to apply oscillating motion to the workpiece. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention comprises an abrasive-coated tape and a shoe assembly having a rigid surface that contacts and presses the tape-coated material-coated surface against the rotating shaft surface of a workpiece including a crankshaft. The present invention relates to an oscillation mechanism of a tape wrap device that is processed by rotating a rotation shaft.

A conventional abrasive-coated tape, and a shoe assembly having a rigid surface for contacting and pressing the tape abrasive-coated surface with the surface of the rotating shaft of the workpiece including the crankshaft. As an oscillation mechanism of a tape wrap device that is processed by rotating, there is one disclosed in Patent Document 1, for example. As shown in FIG. 1 of Patent Document 1, a table in which a head stock and a tail stock for supporting a workpiece are arranged is supported by a rail on a guide stand so as to be movable in the axial direction of the workpiece, The table was connected to the vibration device by a connecting member, and was oscillated by the vibration device.
Japanese Patent Laid-Open No. 8-25789

  In the configuration of Patent Document 1, a table in which a head stock and a tail stock for supporting a workpiece are arranged is supported on a rail on a guide stand, and the table is connected to a vibration device, and the workpiece is axially moved. A dedicated drive device that oscillates to perform oscillation motion is required. This makes the device complex, large and expensive. In the oscillation mechanism disclosed in Patent Document 1, the headstock and tailstock are supported on the guide stand so as to be movable in the axial direction using a ball spline or a roller spline on a linear slide. The ball spline ball or roller spline roller, which is a dynamic slide bearing, repeats a minute rotation without rotating once. Therefore, fretting wear occurs on the ball or roller minute rotation surface, and the ball spline, which is a linear slide bearing, There existed a subject that the lifetime of the roller of a ball | bowl or a roller spline fell extremely.

An object of the present invention includes an abrasive-coated tape, and a shoe assembly having a rigid surface that contacts and presses the tape-coated material-coated surface against a rotating shaft surface of a workpiece including a crankshaft. In tape wrapping equipment that is processed by rotating the rotating shaft of an object, an oscillation mechanism for a tape wrapping apparatus that does not require a dedicated drive device that swings the work piece in the axial direction to perform oscillation motion is provided. There is to do.
Another subject of the present invention is a linear motion bearing that supports the head stock and tail stock so as to be movable in the axial direction on a guide stand, a linear motion bearing of a ball spline, and a minute rotation of a ball or roller spline roller. An object of the present invention is to provide an oscillation mechanism for a tape wrap apparatus that prevents fretting wear on the surface.

  Therefore, the present invention comprises an abrasive-coated tape and a shoe assembly having a rigid surface that contacts and presses the tape-coated material-coated surface against the workpiece surface of a shaft including a crankshaft. In a tape wrap device that is processed by rotating a shaft, a pair of arms, a pair of shoe assemblies supported by the pair of arms and an arm opening / closing device as an arm unit that can move in the axial direction of the workpiece The arm unit is integrally formed and supported on a bed through a linear motion bearing (linear guide), a ball spline, or a roller spline so as to be movable in the axial direction by an axial drive device. The arm unit is oscillated in the axial direction of the workpiece by an axial drive device during the tape lapping process to give an oscillation motion. It has solved the problems of the conventional products described above by providing a oscillation mechanism of the tape wrap system.

  With such a configuration, the oscillation mechanism of the tape wrapping device of the present invention has a pair of arms, a pair of shoe assemblies supported by the pair of arms, and an arm opening / closing device capable of moving in the axial direction of the workpiece. -Integrally formed as an arm unit, and the arm unit is supported on a bed through a linear bearing, a ball spline or a roller spline so as to be movable in the axial direction by an axial drive device; Since the arm unit is oscillated in the axial direction of the workpiece by the axial drive device during the tape lapping process on the surface of the rotating shaft of the workpiece, an oscillation motion is applied. Therefore, the workpiece is oscillated in the axial direction. Thus, it is possible to provide an oscillation mechanism for a tape wrap apparatus that is simple in structure and inexpensive and does not require a dedicated drive device for performing an oscillation motion.

  Preferably, after completion of the machining at one place, the arm unit is positioned in the axial direction on the surface of the rotating shaft of the workpiece by an axial drive device, and is subjected to tape lapping so as to give an oscillation motion. After completion of machining at the point, during the positioning in the axial direction, the stroke of one ball or roller spline of linear motion bearing (linear guide), ball spline or roller spline is sufficiently lubricated and finely oscillated or roller Even if one ball or roller of a spline repeats a minute rotation without rotating once, fretting wear does not occur on the minute rotation surface of the ball or roller, and the life of the ball or roller spline ball or roller This provides an oscillation mechanism for a tape wrap device with an extended length.

  An example of the best mode for carrying out the present invention will be described with reference to the drawings. 1 is a schematic plan view of a tape wrapping apparatus according to an embodiment of the present invention, showing a state before tape wrap processing, FIG. 2 is a front view taken along line AA in FIG. 1, and FIG. 3 is a left side view of FIG. 4 is an enlarged view of a main part of the tape lapping apparatus of FIG. 1 showing a state in which the surface of the rotating shaft of the workpiece is being tape lapped. In FIG. 1, a workpiece 2 of a shaft that is a crankshaft is supported by a headstock 18 and a tailstock 19 disposed on a guide base 20, and is rotated by a drive motor 21 of the headstock 18.

  As shown in FIGS. 1 to 4, the oscillation device according to the embodiment of the present invention includes an abrasive-coated tape 1 (FIG. 3), and a workpiece 2 of a shaft including a crankshaft on the abrasive-coated surface of the tape 1. In a tape wrapping device that is processed by rotating the rotating shaft 3 of the workpiece 2, the pair of arms 4, 4, and a pair A pair of shoe assemblies 5 and 5 supported by the arms 4 and 4 and an arm opening and closing device 6 are integrally formed as an arm unit 10 movable in the axial direction of the work piece. Is supported on the bed 7 via ball screws 11 and 12 so as to be movable in the axial direction (X-axis direction) of the workpiece by the X-axis moving motor 15 of the axial driving device 8, and the rotation axis of the workpiece 2 3 The arm unit 10 is an axial drive device when tape wrapping on the surface 8 And to give the oscillation movement is swung in the axial direction of more workpiece. In FIG. 3, the arm unit 10 is movable on a table 14 provided on an X-axis direction moving unit 13 by a Z-axis moving motor 16 in the Z-axis direction (front-rear direction). Reference numeral 11 denotes a ball screw to which the arm unit 10 is fixed, which is rotated by the X-axis moving motor 15 of the axial direction driving device 8 so that the moving unit 13 moves on the linear motion bearing.

  With such a configuration, the arm unit capable of moving the pair of arms 4, 4 and the pair of shoe assemblies 5, 5 supported by the pair of arms 4, 4 and the arm opening / closing device 6 in the axial direction of the workpiece. The arm unit 10 is oscillated in the axial direction of the workpiece by the axial drive device 8 to give an oscillation motion during the tape lapping process and moved in the axial direction of the workpiece. Only the axial drive 8 of the arm unit that can be used, and when the tape lapping is performed, the arm unit is operated by the axial drive device 8 so that a minute vibration of 1 mm or less in the axial direction (X-axis direction) of the workpiece (FIG. 4, Since the oscillation motion is given by swinging in w)), a dedicated drive device that swings the work piece in the axial direction to perform the oscillation motion is not required, and the structure is simple and inexpensive. Osley of tape wrap equipment Provided a new mechanism.

  In the oscillation device of the tape wrapping device for rotary surface machining according to the embodiment of the present invention, after the machining at one place is completed, the arm unit 10 is positioned in the X-axis direction by the axial drive device 8, and the tape lap processing is performed. After the completion of machining at one location, during the positioning in the X-axis direction, the ball spline or roller spline is sufficiently lubricated by the stroke of one ball or roller rotation, 1mm or less Fretting wear on the micro-rotation surface of the ball or roller even if micro-oscillation is repeated without micro-oscillation (Fig. 4, w)) or one ball or roller of the roller spline makes one revolution Oscillation of the tape wrap device that has extended the life of the ball or roller of the ball spline or roller spline It was intended to provide the Deployment mechanism.

1 is a schematic plan view of a main part of a tape wrap apparatus according to an embodiment of the present invention, showing a state before tape wrap processing. The AA arrow front view of FIG. The left view of FIG. The principal part partial enlarged view shown in the state in which tape wrap processing is in the tape wrap apparatus of FIG.

Explanation of symbols

1: Abrasive coating tape 2: Work piece 3: Rotating shaft 4: Arm 5: Shoe assembly 6: Arm opening / closing device 7: Bed 8: Axial direction driving device 9: Cam shaft
10: Arm unit 11, 12: Linear motion bearing (linear guide), ball spline or roller spline 13: Moving unit

Claims (2)

  A polishing material-coated tape and a shoe assembly having a rigid surface that presses the tape-coated material-coated surface in contact with the workpiece surface of a shaft including a crankshaft. A pair of arms, a pair of shoe assemblies supported by the pair of arms, and an arm opening and closing device are integrally formed as an arm unit movable in the axial direction of the workpiece; The arm unit is supported on a bed via a linear motion bearing (linear guide), a ball spline or a roller spline so as to be movable in the axial direction of the workpiece by an axial drive device, and the surface of the rotating shaft of the workpiece is covered. A tape wrap device characterized in that, during tape wrap processing, the arm unit is oscillated in an axial direction by an axial drive device to give an oscillation motion. Oscillation mechanism.   The arm unit is positioned in the axial direction on the surface of the rotating shaft of the workpiece by an axial driving device after the completion of machining at one place, and is subjected to tape lapping to give an oscillation motion. An oscillation mechanism for a tape wrap device according to Item 1.

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