JPH058163A - Shaft member polishing device - Google Patents

Abstract

PURPOSE:To improve the workability in polishing by guiding a polishing tape to be flat, pressing it to a shaft member to get in contact with it by a pressure contact part which oscillates following an outer surface form of the shaft member, and vibrating it along the axis, while transferring it in one direction. CONSTITUTION:A polishing tape T is transferred in one direction continuously by a tape transfer mechanism 1, and the transfer means 1 is vibrated along the axis by a vibration mechanism 24. The polishing tape T is formed flat by a guide part 14, and pressed to an outer circumferential surface of a shaft member W which is rotating to get in contact with it by a pressure contact part 34. The polishing tape T is moved along the axis of the shaft member W by a motion mechanism 22 The pressure contact part 34 is moved following the outer circumferential surface of the shaft member W by a movable mechanism 35. The whole outer circumferential surface of the shaft member W is thus polished by the polishing tape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft-shaped member polishing apparatus used for polishing shafts, pins and the like.

[0002]

2. Description of the Related Art Conventionally, as a shaft-shaped member polishing apparatus of this type, one having a structure shown in Japanese Patent Publication No. 63-35834 proposed by the present applicant is known.

In this structure, a shaft-shaped member is oscillated in the axial direction by a polishing tape that is continuously transferred to perform polishing.

[0004]

However, in the case of the above-mentioned conventional structure, one end or both ends of the shaft-shaped member is supported by a chuck, such as an automatic lathe, and the chuck is rotated to rotate the shaft-shaped member. Is not applicable to.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and the polishing tape pressed against the outer peripheral surface of the shaft member supported and rotated is continuously transferred in one direction. The tape transfer mechanism includes a tape transfer mechanism, a moving mechanism that moves the tape transfer mechanism in the axial direction of the shaft-shaped member, and a swing mechanism that swings the tape transfer mechanism in the axial direction of the shaft-shaped member. The mechanism is provided with a guide portion capable of guiding the polishing tape flatly, and the guide portion is provided with a pressure contact portion capable of pressure contacting the outer peripheral surface of the shaft-shaped member with the pressure contact portion being axial. A shaft-shaped member polishing apparatus is characterized in that a movable mechanism that allows follow-up swing according to the shape of the outer peripheral surface of the member is provided.

[0006]

The tape transfer mechanism continuously transfers the polishing tape in one direction, and the rocking mechanism causes the tape transfer mechanism to rock in the axial direction of the shaft-shaped member, and the polishing tape is guided by the guide portion provided in the tape transfer mechanism. When the polishing tape is moved in the axial direction of the shaft-shaped member by the moving mechanism, the polishing tape is pressed into contact with the outer peripheral surface of the shaft-shaped member that is supported and rotated by the pressure-contacting portion arranged in the guide portion. The press contact portion performs a follow-up oscillating motion according to the outer peripheral surface shape of the shaft-shaped member by the movable mechanism.

[0007]

1 to 6 show an embodiment in which the present invention is mounted on a lathe, and W is a shaft-shaped member to be ground, in which case one end is gripped by a spindle chuck (not shown), The other end is supported by the center of the tailstock (not shown), and the shaft W is rotated by the rotation of the main shaft.

Reference numeral 1 denotes a tape transfer mechanism, which is mounted on a rocking table 4 which is arranged on the machine body 2 in the axial direction of the shaft-shaped member W by a bearing portion 3 so as to be rockable. The mounting plate 5 is attached to the shaking table 4, the actual winding reel 6 and the take-up reel 7 of the polishing tape T are axially attached to the mounting plate 5, and the shaking table 4
The slide base 9 is arranged in the radial direction of the shaft member W so as to be able to move back and forth by the bearing portion 8, the bracket 10 is attached to the shaking base 4, the forward / backward movement cylinder 11 is attached to the bracket 10, and the forward / backward movement cylinder 11 is used. The slide base 9 can be moved forward and backward, the bearing cylinder portion 12 is arranged on the slide base 9, the support cylinder 13 is arranged on the bearing cylinder portion 12 in a non-rotating state, and the guide portion 14 is arranged on the support cylinder 13. Set, real reel 6
The polishing tape T pulled out further is wound around the winding reel 7 via the roller 19, between the roller 15, the guide portion 14, the roller 16, and the pair of sandwiching rollers 17 and 18, and the actual winding reel 6 is driven by the servomotor 20. While driving, the sandwiching roller 17 is driven by the servo motor 21, and the rotation of the sandwiching roller 17 is driven on the take-up reel 7 by a belt transmission mechanism (not shown) to apply the backing tension to the polishing tape T in one direction. It is configured to be continuously transferred to.

Reference numeral 22 denotes a moving mechanism, which in this case is a mechanism for moving the moving table 23 which is the reciprocating table of the lathe, and although the details are omitted, the machine body 2 is replaced by the moving table 23 which is the reciprocating table. The attachment and tape transfer mechanism 1 is moved in the axial direction of the shaft-shaped member W.

Reference numeral 24 denotes a vibration mechanism. In this case, a bracket 25 is mounted on the machine body 2, a vibration motor 26 is mounted on the bracket 25, a drive shaft 27 is borne by the bracket 25, and an upper end portion of the drive shaft 27 is mounted. And a main shaft 26a of the vibration motor 26 are connected by a joint 26b, an eccentric shaft portion 27a is formed at a lower end portion of the drive shaft 27, a cam follower 28 is attached to the eccentric shaft portion 27a, and the eccentric shaft portion 27a is mounted on the vibration table 4. Individual guide plate 29
Are installed so as to face each other so as to sandwich the cam follower 28, the drive shaft 27 is rotated by the drive of the vibration motor 26, and the cam follower 28 attached to the eccentric shaft portion 27a and the guide plate 29 act to cause the above bearing. The part 3 is configured to cause the shaking table 4 to swing in the axial direction of the shaft-shaped member W.

In this case, in the guide portion 14, the holding plate 30 is attached to the support cylinder 13, the arms 31 and 31 are attached to the upper and lower positions of the holding plate 30, and the support arms 32 and 32 are attached to the arms 31 and 31, respectively. Guide rollers 33, 33 are attached to the support arms 32, 32 so that the polishing tape T can be guided flatly.

Reference numeral 34 is a pressure contact portion, and 35 is a movable mechanism.
In this case, the mounting shaft 36 is fitted and disposed on the center of the support cylinder 13 so that the mounting shaft 36 can be moved forward and backward, and the supporting piece 37 is rotatably positionally fixed to the mounting shaft 36 while the frictional action is given by the set screw 38. Then, a fulcrum shaft 39 is vertically provided on the support piece 37, and a planar U-shaped support arm 40 is pivotally attached to the fulcrum shaft 39 so as to be horizontally swingable.
A roller, which is the pressure contact portion 34, is rotatably attached to the support arm 40, and the compression springs 41, 41 are respectively provided between the support piece 37 and the support arm 40 at both positions with the support shaft 39 as a boundary.
Are interveningly arranged.

Since this embodiment is constructed as described above, the tape transfer mechanism 1 continuously transfers the polishing tape T in one direction, and the tape transfer mechanism 1 is vibrated by the vibrating mechanism 24 in the axial direction of the shaft-shaped member W. Of the shaft-shaped member W that is moved and guides the polishing tape T in a flat state by the guide portion 14 provided in the tape transfer mechanism 1 and that supports and rotates the polishing tape T by the press contact portion 34 provided in the guide portion 14. The outer peripheral surface of the shaft-shaped member W can be polished by bringing the outer peripheral surface into pressure contact and moving the polishing tape in the axial direction of the shaft-shaped member W by the moving mechanism 22. Since the polishing tape T is moved in the axial direction for polishing with the combined action of the shaking motion of the above, it is possible to obtain a good polishing surface.

In particular, the pressure contact portion 34 is horizontally swung about the fulcrum shaft 39 as shown by the arrow in FIG. 6 according to the outer peripheral surface shape of the shaft member W by the action of the two compression springs 41 of the movable mechanism 35. It is possible to make a follow-up oscillating motion by moving, so that even if there is a taper portion or a drum-like portion on the outer peripheral surface of the shaft-shaped member W, it oscillates following the shape thereof.
As a result, the polishing tape T can be brought into good pressure contact with the outer circumferential surface of the shaft-shaped member W, and good polishing processing can be obtained.

The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the carriage moving mechanism of the lathe is used as the moving mechanism 22, but a separate automatic or manual structure is used. A moving mechanism may be combined, and the structure of the movable mechanism 35 is designed by appropriately changing it.

[0016]

As described above, according to the present invention, the tape transport mechanism continuously transports the polishing tape in one direction, and the tape transport mechanism swings in the axial direction of the shaft-shaped member by the swing mechanism to thereby perform the tape transport mechanism. Guides the polishing tape in a flat shape, and the pressure contact portion disposed in this guide portion presses the polishing tape against the outer peripheral surface of the shaft member that is supported and rotated, and the movement mechanism causes the polishing tape to rotate. By moving the shaft-shaped member W in the axial direction, the outer peripheral surface of the shaft-shaped member can be ground, and the polishing tape can be moved in the axial direction with a combined action of the traveling motion of the polishing tape and the shaking motion in the axial direction. Since it is moved and polished, a good polishing surface can be obtained, and this pressure contact portion can perform a follow-up oscillating motion according to the outer peripheral surface shape of the shaft-shaped member by the action of the movable mechanism. Out of Can be favorably pressed against the polishing tape to the surface, it is possible to obtain a good polishing.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of the present invention.

FIG. 2 is a vertical sectional view of an embodiment of the present invention.

FIG. 3 is a partial perspective view of an embodiment of the present invention.

FIG. 4 is a partial cross-sectional view of an embodiment of the present invention.

FIG. 5 is a partial side sectional view of an embodiment of the present invention.

FIG. 6 is a partial plan sectional view of an embodiment of the present invention.

[Explanation of symbols]

 W Shaft member T Polishing tape 1 Tape transfer mechanism 14 Guide part 22 Moving mechanism 24 Shaking mechanism 34 Pressure contact part 35 Movable mechanism

Claims (1)

Claim: What is claimed is: 1. A tape transport mechanism for continuously transporting a polishing tape pressed against an outer peripheral surface of a shaft member supported and rotated in one direction, and the tape transport mechanism in an axial direction of the shaft member. And a swinging mechanism for swinging the tape transfer mechanism in the axial direction of the shaft-shaped member, and a guide portion capable of guiding the polishing tape in a flat state is arranged in the tape transfer mechanism. And a pressure contact portion capable of pressure contacting the polishing tape with the outer peripheral surface of the shaft-shaped member is provided in the guide portion, and the pressure contact portion is movable to allow follow-up swing according to the outer peripheral surface shape of the shaft-shaped member. A shaft-shaped member polishing apparatus comprising a mechanism.