JP2007331057A - Tape lapping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a film lapping device that machines a plurality of workpieces, mutually having different eccentricity amounts from a journal part of a pin part, that is, different pin strokes, while holding the pin part at an advanced position corresponding to the pin stroke of each workpiece with one Z-axis moving unit in a tape-lapping shaft part for a shaft-like workpiece like a crankshaft without requiring fine-adjustment positioning time. <P>SOLUTION: A tape-lapping device has the Z-axis moving units 10, 13 that allow opening/closing arms 6, 6 to move in a Z-axis direction between the advanced position (A), shown by a continuous line (A), where the arms hold the shaft surface 3 of the workpiece 2, and a retreated position (R), shown by a dashed line, retreated from the shaft surface 3 of the workpiece 2. Each Z-axis moving unit 10, 13 is composed so as to execute positioning at an advanced position corresponding to a desired pin stroke and fine-adjustment stroke positioning, by each first servomotor 12, 15 provided to each Z-axis moving unit body 11, 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shoe having a relatively incompressible abrasive-coated tape and a pair of relatively rigid concave surfaces that contact and press the abrasive-coated surface of the tape against the workpiece surface of a shaft such as a crankshaft. The present invention relates to a tape wrap device having an open / close arm that supports an assembly.

A conventional relatively incompressible abrasive-coated tape and a shoe having a pair of relatively rigid concave surfaces that contact and press the abrasive-coated surface of the tape against the shaft surface of a workpiece such as a crankshaft. It has an open / close arm that supports the assembly, and the open / close arm moves in the Z-axis direction between a forward position where the open / close arm grips the axial surface of the workpiece and a retracted position retracted from the axial surface of the workpiece. An example of a tape wrap apparatus having a Z-axis movement unit that has been made available is disclosed in Patent Document 1. As shown in FIG. 5, FIG. 7 and paragraph [0030] of Patent Document 1, this is a relatively incompressible abrasive-coated tape, and the abrasive-coated surface of the tape is covered with a shaft object such as a crankshaft. An opening / closing arm that supports a shoe assembly having a pair of relatively rigid concave surfaces that are brought into contact with and pressed against the shaft surface of the workpiece, the position at which the opening / closing arm grips the shaft surface of the workpiece, and the workpiece A device having a Z-axis moving unit that is movable in the Z-axis direction between a position retracted from the surface of an object and the Z-axis is disclosed.
Japanese Patent No. 35589117 FIG. 5, FIG. 7, [0030]

However, the Z-axis moving unit shown in FIGS. 5 and 7 of Patent Document 1 is a cylinder, and an advance position where the open / close arm grips the shaft surface of the workpiece, and a retracted position where the retracted position is retracted from the shaft surface of the workpiece. These two positions are movable in the Z-axis direction and can be fine-tuned and positioned with the screw device shown in FIG. A tape lapping shaft portion of a workpiece of a shaft object such as a crankshaft includes a journal portion coaxial with the shaft center and a pin portion eccentric from the journal portion. Since the amount of eccentricity from the part, that is, the pin stroke, is usually different, the Z-axis movement unit of Patent Document 1 is a device dedicated to the advance position that matches the pin stroke of a specific workpiece, and the workpiece is different. The Z-axis moving unit dedicated to the forward position that matches the different pin strokes of the workpiece is required, and the fine adjustment positioning takes time.

An object of the present invention is to move a plurality of workpieces having different eccentric amounts from a journal portion of a pin portion, that is, pin strokes , to one Z-axis in tape wrap processing of a workpiece such as a crankshaft. It is an object of the present invention to provide a film wrap apparatus that can hold a pin portion at a forward position that matches the pin stroke of each workpiece by a unit and that does not require fine adjustment positioning time.

For this reason, the present invention provides a relatively incompressible abrasive-coated tape and a pair of relatively rigid abrasives that contact and press the abrasive-coated surface of the tape against the shaft surface of a workpiece such as a crankshaft. In a tape wrap device having an open / close arm that supports a shoe assembly having a concave surface, an advance position at which the open / close arm grips the shaft surface of the workpiece, a retracted position retracted from the shaft surface of the workpiece, Z-axis moving units that are movable in the Z-axis direction between the two, and each Z-axis moving unit is moved forward in accordance with a desired pin stroke by a first servo motor provided in the Z-axis moving unit main body. The above-mentioned problems of the conventional products have been solved by providing a tape wrap device that is capable of positioning at a position and fine adjustment stroke positioning.

With this configuration, the tape wrap device of the present invention moves in the Z-axis direction between the forward position where the open / close arm grips the shaft surface of the workpiece and the retracted position retracted from the shaft surface of the workpiece. Each Z-axis moving unit can be positioned at a forward position that matches the desired pin stroke and fine-adjusted stroke by a first servo motor provided in the Z-axis moving unit body. Since the positioning is possible, in the tape lapping shaft portion of the workpiece of the shaft object such as the crankshaft, a plurality of workpieces having different eccentric amounts from the journal portion of the pin portion, that is, the pin stroke, are arranged in one Z forward position that matches the pin strokes of each workpiece in the axial moving unit pin portion can be gripped by and Hisage the not required film wrap device fine adjustment positioning time It was intended to.

  Preferably, a plurality of the Z-axis movement units are arranged, and each of the Z-axis movement units has an individual X-axis movement unit that is movable in the X-axis direction in the axial direction of the work piece. The axial movement unit can be positioned individually at the desired stroke position and finely adjusted by the second servo motor provided in the X-axis movement unit body, so that the axial position of the pin part or journal part can be adjusted. The present invention provides a film wrap apparatus that can simultaneously process a large number of different workpieces.

  An example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of a film wrap apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic side view of a common processing unit having one Z-axis moving unit and an X-axis moving unit as viewed from the right in FIG. is there. A workpiece 2 of a shaft object such as a crankshaft is rotatably supported between a spindle center 9 of a headstock 8 and a tailstock center 17 of a tailstock 16 disposed on a base 7, respectively. The motor 18 is rotated.

As shown in FIGS. 1 and 2, the film wrap device according to the embodiment of the present invention includes a relatively incompressible abrasive-coated tape 1 (FIG. 2) and the abrasive-coated surface of the tape 1 like a crankshaft. In a tape wrapping device having an opening / closing arm 6, 6 that supports a shoe assembly 5, 5 having a pair of relatively rigid concave surfaces 4, 4 that are brought into contact with and pressed against the shaft surface 3 of a workpiece 2, Between the advance position A indicated by the solid line A where the arms 6 and 6 grip the shaft surface 3 of the workpiece 2 and the retracted position R indicated by the one-dot chain line retracted from the shaft surface 3 of the workpiece 2 Z-axis movement units 10 and 13 that are movable in the Z-axis direction. Each Z-axis movement unit 10 and 13 is provided by a first servo motor 12 and 15 provided on the Z-axis movement unit main body 11 and 14, respectively. Multiple workpieces that are different from each other via a built-in ball screw device (not shown) It was capable and can finely adjust the stroke position positioned suits advanced position to a desired pin stroke Z-axis moving unit.

With this configuration, the tape wrap device according to the embodiment of the present invention has a Z-axis between the advance position where the open / close arm grips the shaft surface of the workpiece and the retracted position retracted from the shaft surface of the workpiece. Each Z-axis moving unit can be positioned at a forward position corresponding to a desired pin stroke by a first servo motor provided in the Z-axis moving unit main body. Since the fine adjustment stroke can be positioned, a plurality of workpieces having different eccentric amounts from the journal portion of the pin portion, that is, pin strokes , in the tape wrap processing shaft portion of the shaft workpiece such as a crankshaft are 1 base of the pin portion can be gripped at the advanced position that matches the pin strokes of each workpiece in the Z-axis moving unit, and does not require fine adjustment positioning time Fuirumura' It was intended to provide a device.

In the tape wrap operation, each Z-axis is moved from the retracted position R indicated by a one-dot chain line retracted from the shaft surface 3 of the workpiece 2 with the open / close arms 6 and 6 supporting the shoe assemblies 5 and 5 opened. The moving units 10 and 13 are moved by the first servo motors 12 and 15 in the axial direction X-axis of the workpiece 2 to the advance position A indicated by the solid line A in which the opening and closing arms 6 and 6 grip the shaft surface 3 of the workpiece 2. Is moved in the Z-axis direction perpendicular to the direction to advance to the advance position that grabs the workpiece surface 3 and then rotates between the spindle center 9 of the headstock 8 and the tailstock center 17 of the tailstock 16 The open / close arms 6 and 6 are closed so that the shaft surface 3 of the work piece 2 is supported and the abrasive coating surface of the tape 1 is brought into contact with and pressed against the shaft surface 3, and the shaft surface 3 of the work piece 2 is It is rotated by the motor 18 of the headstock 8 and micro-finishing of the eccentric shaft pin or journal is performed. When the processing is completed, the open / close arms 6 and 6 are opened, and the Z-axis moving units 10 and 13 are returned to the retracted position R indicated by the one-dot chain line by the first servo motors 12 and 15, and at the same time, the tape 1 is The tape is unwound from a tape supply holder (not shown) and wound on a tape take-up holder (not shown) for a predetermined length corresponding to one processing.

  In the tape wrapping apparatus according to the embodiment of the present invention, two Z-axis movement units 10 and 13 are arranged (or three or more), and each Z-axis movement unit 10 and 13 is arranged in the axial direction of the workpiece 2. X-axis moving units 22 and 23 that are movable in the X-axis direction. Each X-axis moving unit 22 and 23 is a second servo motor 20 provided in the X-axis moving unit main bodies 24 and 25, 21. By using a built-in ball screw device (not shown), it is possible to individually position at a desired stroke position and fine adjustment stroke positioning, so that a large number of workpieces with different pin positions or journal positions in the axial direction can be obtained. The film wrap apparatus which can process a thing simultaneously was provided.

1 is a schematic plan view of a film wrap device according to an embodiment of the present invention. FIG. 2 is a schematic side view of a common processing unit having one Z-axis movement unit and an X-axis movement unit as viewed from the right in FIG. 1.

Explanation of symbols

1: abrasive covering tape, 2: workpiece axis, such as a crankshaft, 3: shaft surface
4: relatively rigid concave surface, 5: shoe assembly, 6: open / close arm cassette tool mounting surface
10, 13: Z-axis moving unit, 11, 14: Z-axis moving unit body
12, 15: First servo motor, 22, 23: X-axis moving unit
24, 25: X-axis moving unit body, 20, 21: Second servo motor A: Forward position, R: Reverse position

Claims (2)

A relatively incompressible abrasive-coated tape, and a shoe assembly having a pair of relatively rigid concave surfaces that contact and press the abrasive-coated surface of the tape against the shaft surface of a workpiece such as a crankshaft. In a tape wrap apparatus having an open / close arm that supports
A Z-axis moving unit that is movable in the Z-axis direction between a forward position where the open / close arm grips the shaft surface of the workpiece and a retracted position retracted from the shaft surface of the workpiece; ,
A tape wrap device in which each Z-axis moving unit is positioned at a desired stroke position and finely adjusted by a first servo motor provided in the Z-axis moving unit main body. A plurality of the Z-axis movement units are arranged, and each Z-axis movement unit has an individual X-axis movement unit that is movable in the X-axis direction in the axial direction of the workpiece. 2. The tape wrap apparatus according to claim 1, wherein the unit can be individually positioned at a desired stroke position and finely adjusted by a second servo motor provided in the X-axis moving unit main body.

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