JPH097341A - Polishing apparatus - Google Patents

Abstract

PURPOSE: To eliminate the requirement for chucking a work to be polished at a chucking part and to improve polishing workability by supplying the work to be polished to the outer surface of a work driving roller with a work supplying means, positioning the work, pushing a polishing tape with a pushing means, rotating a tape guide with a work rotating roller, and polishing the work. CONSTITUTION: A work driving roller 2 rotates a work tape guide 101. A work supplying means 3 supplies the tape guide 101 toward the outer surface of the work driving roller 2. Then, a work positioning means 4 holds the tape guide 101 supplied by the work supplying means 3 at a position in contact with the outer surface of the work driving roller 2. Thereafter, a polishing-tape pushing means 6 pushes a polishing tape 5 to the surface to be polished of the tape guide 101, which is positioned by the work positioning means 4. With this constitution, it is not required to chuck the work, and the polishing workability is improved. Furthermore, the occurrence of dispersion of tension to the direction of the width of the polishing tape is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus suitable for polishing a shaft member having a different diameter portion, for example, a tape running surface of a tape guide with a flange of a tape cartridge.

[0002]

2. Description of the Related Art In a tape cartridge, for example, a tape cartridge used as an external storage medium of a computer, a tape guide with a flange installed on a base plate guides the running of a magnetic tape.

As shown in FIG. 13, the tape guide 101 has upper and lower flanges 103 and 104 on the upper and lower ends of the tape running surface 102.
The moving of the magnetic tape 105 is guided while the upper and lower movements of the magnetic tape 105 are restricted by 3, 104.

The tape guide 101 is formed by plating a surface of a material such as stainless steel, brass or aluminum with a metal having a high hardness such as nickel or chrome.

The tape running surface 1 of the tape guide 101
Since No. 02 runs while contacting the magnetic tape 105, if the surface is rough, it may damage the magnetic tape or cause wear of the magnetic tape 105.

Therefore, the tape running surface 102 of the tape guide 101 is polished by a polishing device so as to be a highly accurate smooth surface.

The tape running surface 1 of the tape guide 101
A polishing device as shown in FIG. 14 is used to polish 02.

The polishing apparatus 201 is provided with an object to be polished (hereinafter,
A chucking portion 202 for chucking the end portion of the tape guide 101 as a work), and a rotation operating portion 203 for rotating the chucking portion 202 and the tape guide 101 chucked by the chucking portion 202.
A polishing tape supply reel 204, a polishing tape take-up reel 206 for winding the polishing tape 205 fed from the polishing tape supply reel 204, and polishing between the polishing tape supply reel 204 and the polishing tape take-up reel 206. The tape 205 is provided with a tension applying member 207 that applies a desired tension.

Then, the tape guide 10 as a work
After the lower end of 2 is chucked by the chucking portion 202, the polishing tape 205 is hung on the tape running surface 102 of the tape guide 101, a predetermined tension is applied to the polishing tape 205 by the tension applying member 207, and the rotation operation is performed. Part 203
Then, the chucking portion 202 and the tape guide 101 are rotated to polish the tape running surface 102 of the tape guide 101.

[0010]

The conventional polishing apparatus 201 has the following problems.

(1) Tape guide 101 as a work
After being chucked by the chucking section 202, the polishing tape 205 is hung on the tape running surface 102 of the tape guide 101, and then the tape guide 101 is rotated to polish the tape running surface 102. After removing the polishing tape 205 from the tape running surface 102,
Since the tape guide 101 has to be removed from the chucking portion 202, work efficiency is poor.

(2) Using the tension applying member 207, the polishing tape 2
When tension is applied to 05, as shown in FIG.
The tension of the polishing tape 205 varies in the width direction, which causes so-called uneven polishing.

The present invention has been made for the purpose of solving the above-mentioned conventional problems and providing a polishing apparatus capable of efficiently and accurately polishing the tape running surface of a tape guide with a flange. Is.

[0014]

A polishing apparatus of the present invention comprises a work drive roller for rotating a work as an object to be polished, work supply means for supplying the work toward the peripheral surface of the work drive roller, and Work positioning means for holding the work supplied by the work supplying means in a position in contact with the peripheral surface of the work driving roller, and polishing for pressing a polishing tape against the surface to be polished of the work positioned by the work positioning means. And a tape pressing means.

[0015]

The workpiece as the object to be polished supplied by the workpiece supply means is held by the workpiece positioning means in contact with the peripheral surface of the workpiece drive roller.

By the work positioning means, the polishing tape is pressed by the tape pressing means onto the surface to be polished of the work held in contact with the peripheral surface of the work driving roller.

When the work drive roller is rotated, the work in contact with the peripheral surface of the roller is rotated in the opposite direction to the work drive roller by friction, and the surface to be polished is polished by the polishing tape.

[0018]

EXAMPLES Next, a polishing apparatus of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing the outline of the polishing apparatus 1.

The polishing apparatus 1 is provided with a flanged tape guide (hereinafter simply referred to as a tape guide) 1 as a work.
01, a work drive roller 2 for rotating 01, work supply means 3 for supplying the tape guide 101 toward the peripheral surface of the work drive roller 2, and the tape guide 101 supplied by the work supply means 3 for driving the work. Laura 2
Workpiece positioning means 4 for holding the workpiece at a position in contact with the peripheral surface of the workpiece
And a tape running surface 102 as a surface to be polished of the tape guide 101 positioned by the work positioning means 4.
And a polishing tape pressing means 6 for pressing the polishing tape 5.

As shown in FIG. 2, the work driving roller 2 is formed by attaching a ring body 12 having elasticity to the outer periphery of a pulley 11 made of metal, and is driven to rotate by a motor 13. It has become.

The ring body 12 is formed of urethane rubber, silicon rubber, SBR rubber or the like to a hardness of about Shore D70.

The width W ₁ of the work driving roller 2 is equal to or slightly wider than the width W ₂ between the outer surfaces of the upper and lower flanges 103 and 104 of the tape guide 101. The peripheral surfaces of the upper and lower flanges 103 and 104 of the tape guide 101 come into contact with the peripheral surface of the ring body 12.

As shown in FIG. 1, the work supply means 3 is formed in a gutter shape and has a large number of tape guides 101.
... 101 are arranged in a line.

The work supply means 3 is formed with a predetermined downward slope θ, and rolls and drops the tape guides 101 ... 101 by its own weight so that the most advanced tape guide 101 is placed on the top portion 2a of the work drive roller 2. It is designed to be sent out.

The work positioning means 4 is for stopping the tape guide 101 fed from the work supply means 3 at the top 2a of the work driving roller 2.

As shown in FIGS. 3 to 4, the work positioning means 4 includes an air cylinder 21, a rod 24 connected to the tip of a piston rod 22 of the air cylinder 21 via a connecting member 23, and A rotating roller 25 rotatably attached to the rod 24 via a bearing, and an umbrella-shaped large-diameter portion 26 provided at one end of the rotating roller 25.
have.

The rotating roller 25 is located above the one side portion of the work driving roller 2 shown by the two-dot chain line in FIGS. 3 to 4 by the air cylinder 21 from the state of the work driving roller 2 shown by the solid line. It is possible to move from the state located above and the state shown by the above solid line opposite thereto to the state shown by the two-dot chain line.

Then, when the tape guide 101 is sent out from the work supply means 3 toward the top portion 2a of the work driving roller 2 with the rotary roller 25 positioned right above the work driving roller 2, The peripheral surfaces of the upper and lower flanges 103 and 104 of the tape guide 101 come into contact with the rotary roller 25, and the upper flange 10
The side surface 3 of the workpiece 3 comes into contact with the side surface of the large-diameter portion 26 having an umbrella shape, and the work positioning means 4 holds the tape guide 101 in a state where the tape guide 101 is positioned on the top portion 2a of the work driving roller 2. .

Next, the polishing tape 5 will be described. As shown in FIG. 5, the width W ₃ of the polishing tape 5 is formed between the inner side surfaces of the upper and lower flanges 103 and 104 of the tape guide 101, that is, smaller than the width W ₄ of the tape running surface 102. .

As shown in FIG. 1, the polishing tape 5
Is wound around the tape supply reel 31, is fed at a constant speed by the pinch roller 32 and the capstan 33, and is wound around the tape winding reel 34.

The polishing tape 5 is stretched over the first to fourth guide rollers 35 to 38 with the polishing surface 5a facing outward, and passes through the vicinity of the top 2a of the work driving roller 2. Has become.

A torque motor is connected to the tape supply reel 31 to apply back tension to the polishing tape 5.

Next, the polishing tape 5 is attached to the tape guide 1.
The polishing tape pressing means 6 pressed against the tape running surface 102 of No. 01 will be described.

As shown in FIG. 1, the polishing tape pressing means 6 comprises a rotating lever 41 and a lever driving member 42 such as an air cylinder for rotating the rotating lever 41.

One end side of the rotating lever 41 is the pivot shaft 4
3 is rotatably attached to the support member 44, and a part of the polishing tape 5 is wound around the other end side (free end side) by the second and third guide rollers 36 and 37. .

As shown in FIG. 5, the thickness of the rotary lever 41 on the free end side, that is, the vertical width W ₅ is smaller than the width W ₄ of the tape running surface 102, and the polishing tape 5 is used.
Is set to a value substantially the same as the width W ₃ .

As shown in FIG. 6, the polishing tape 5 is attached to the tape guide 101 on the free end side of the rotary lever 41.
The side surface 41a pressed against the tape running surface 102 is provided with a concave groove (escape groove) 45 for receiving a polishing tape having a radius of curvature slightly larger than that of the tape running surface 102.

The rotating lever 41 is a first lever described below.
~ Stops at the third three positions.

FIG. 6 shows a state in which the rotating lever 41 is stopped at the first position. At this position, the rotation lever 41 and the polishing tape 5 are not moved to the entire tape guide 101.
... is not in contact with 101.

In this state, the tape guides 101 ... 101 supported by the gutter-shaped work supply means 3 are rotated and dropped by their own weight, and the leading edge of the tape guide 101 comes into contact with the rotary roller 25 of the work positioning means 4. Be positioned.

FIG. 7 shows a state in which the rotating lever 41 is rotated counterclockwise by a predetermined angle from the first position and stopped at the second position. In this position, the turning lever 41
The free end of the tape guide 101
The upper and lower flanges 10 of the tape guide 101 immediately after
The polishing tape 5 is still kept in non-contact with the tape guide 101, although the polishing tape 5 is in contact with the front end side of the dropping direction of the uppermost end position P of the 3, 104.

FIG. 8 shows a state in which the rotating lever 41 is further rotated counterclockwise by a predetermined angle from the second position and stopped at the third position. In this state, the tip of the rotary lever 41 on the free end side is the most advanced tape guide 1 described above.
The tape guide 101 immediately after 01 is pushed back to separate the tape guide 101 from the frontmost tape guide 101. On the other hand, the free end side of the rotating lever 41 penetrates between the upper and lower flanges 103 and 104 of the leading edge of the tape guide 101, and the polishing tape 5 wound around the free end side is placed at the leading edge. Tape guide surface 1 of tape guide 101
Press on 02.

The polishing tape 5 pressed against the tape running surface 102 bends and enters the recess 45 for receiving the polishing tape provided in the rotating lever 41, and the polishing tape 5
The frontmost tape guide 101 is sandwiched between the work drive roller 2 and the work drive roller 2.

FIG. 9 is a sectional view taken along the line AA of FIG. As described above, the width W ₃ of the polishing tape 5 and the rotation lever 4
The width W ₅ on the free end side of 1 is set smaller than the width W ₄ of the tape running surface 102 of the tape guide 101. Therefore, a gap C of W ₄ -W ₃ is generated between the polishing tape 5 and the tape running surface 102, and the portion of the gap C may not be polished by the polishing tape 5.

The polishing tape moving means 51, which will be described next, makes it possible to polish the tape running surface 102 without leakage by moving the polishing tape 5 in the width direction of the tape running surface 102.

As shown in FIG. 10, the polishing tape moving means 51 has a pair of arms 52 and 53 provided on one side surface of the rotating lever 41 and the arms 52 and 53.
A cam contact plate 54 attached to the tip of the rotary cam 55, a circular rotary cam 55 whose peripheral surface is in contact with the cam contact plate 54, and a motor 56 for rotating the rotary cam 55.

The rotation center shaft 57 of the rotary cam 55 is provided at a position eccentric from the center of the rotary cam 55.

The difference (L ₁ -L ₂ ) between the longest distance L ₁ and the shortest distance L ₂ from the center axis 57 of rotation of the rotary cam 55 to the peripheral surface is set to be approximately the same as the gap C.

Further, the rotating lever 41 has a pivot shaft 43.
Is movably mounted in the axial direction of the pivot shaft 43, and is elastically urged toward the rotary cam 55 by a coil spring 58 mounted on the outer periphery of the pivot shaft 43.

With the coil spring 58, the turning lever 4
The cam contact plate 54 is pressure-bonded to the peripheral surface of the rotary cam 55 by elastically urging 1 toward the rotary cam 55.

When the rotary cam 55 is rotated, the rotary lever 41 moves in the axial direction of the pivot shaft 43 via the cam contact plate 54 and the pair of arms 52 and 53.

The polishing tape 5 wound around the free end side of the rotating lever 41 by the movement of the rotating lever 41 in the axial direction of the pivot shaft 43 is filled with the tape guide 101 so as to fill the gap C. The tape running surface 102 is moved in the width direction to polish the tape running surface 102 without leakage.

The cam contact plate 54 and the rotary cam 55 are
Are configured to maintain contact with each other even when the rotating levers 41 rotate about the pivot shaft 43.

Next, the operation of the polishing apparatus 1 of the embodiment will be described.

First, with the rotating roller 25 of the work positioning means 4 protruding above the work driving roller 2,
As shown in FIG. 6, when the rotation lever 41 is rotated to the first position, the tape guides 101 ... 101 drop the gutter-shaped work supply means 3 and the most advanced tape guide 101.
Are supplied directly above the work driving roller 2.

Next, as shown in FIG.
When 1 is rotated to the third position, the polishing tape 5 wound around the tip of the rotation lever 41 contacts the tape running surface 102 of the most advanced tape guide 101, and the tape guide 101 rotates. It is sandwiched and held between the moving lever 41 and the work driving roller 2. When the work driving roller 2 is rotated in this state, the cutting edge tape guide 101 is moved to the work driving roller 2 by the frictional resistance with the elastic ring body 12 provided on the outer peripheral portion of the roller 2.
The tape running surface 102 is polished by the polishing tape 5 by rotating in the direction opposite to the rotating direction of the.

At this time, the polishing tape moving means 51 moves the polishing tape 5 in the width direction of the tape running surface 102 to polish the tape running surface 102 without leakage.

After the polishing of the tape running surface 102 is completed, the turning lever 41 is turned to the second position as shown in FIG.

When the rotating lever 41 is rotated to the second position, the polishing tape 5 is brought into non-contact with the leading edge tape guide 101. In this state, the air cylinder 21 of the work positioning means 4 rotates the rotating roller 25 and the roller 25.
By pulling the umbrella-shaped large-diameter portion 26 provided at one end of the tape, the leading-edge tape guide 101 in which the large-diameter portion 26 is engaged with one side surface is pulled by the large-diameter portion 26. Then, the work drive roller 2 is dropped and taken out.

After the tape guide 101 which has been polished as described above is taken out, the rotary roller 25 of the work positioning means 4 is again positioned on the work drive roller 2.

Thereafter, as shown in FIG. 6, when the rotary lever 41 is moved to the third position, the tape guides 101 ... 101 of the gutter-shaped work supply means 3 are rotated and dropped by their own weight. Therefore, the most advanced tape guide 101 is supplied onto the work driving roller 2.

As shown in FIG. 11, the outer peripheral surface of the elastic ring body 12 of the work driving roller 2 is formed into an inclined surface having a predetermined inclination angle θ (2 to 3 °), and is set to the large diameter side. By creating a peripheral speed difference on the small diameter side, the tape guide 10
1 may be pressed against one side surface or the like of the umbrella-shaped large-diameter portion 26 of the work positioning means 4.

Further, as shown in FIG. 12, an elastic member 46 such as rubber is filled in the concave groove 45 of the rotating lever 41, and the elasticity of the elastic member 46 is utilized to attach the polishing tape 5 to the polishing tape 5. The tape guide 101 may be configured to be pressed against the tape running surface 102.

Further, in the embodiment, the polishing tape moving means 5 is used.
Although the configuration in which the tape guide 101 of the polishing tape 5 is moved in the width direction of the tape running surface 102 by 1 is described above, the tape guide 101 may be moved in the width direction of the tape running surface 102.

Further, in the embodiment, the case where the tape guide having the upper and lower flanges is polished as the work is shown. However, the tape guide having one of the upper and lower flanges or a material other than the tape guide is polished. Also used when doing.

[0066]

The polishing apparatus of the present invention has the following effects.

(1) A polishing apparatus according to a first aspect of the present invention supplies a work as an object to be polished to a peripheral surface of a work driving roller by a work supply means, positions the work by a work positioning means, and applies a polishing tape to the work. Since the work is polished by pressing it with the polishing tape pressing means and rotating the work with the work drive roller, it is not necessary to chuck the work with the chucking portion as in the conventional polishing device, and the polishing workability is improved. Can be made.

Further, since the polishing tape is pressed against the work by the polishing tape pressing means, it is possible to prevent the tension from varying in the width direction of the polishing tape as in the conventional polishing apparatus.

(2) According to the polishing apparatus of claim 2, the polishing tape moving means moves the polishing tape in the tape width direction with respect to the surface to be polished of the work. Even if the width of the polishing tape is small, it is possible to prevent polishing leakage in the width direction of the tape running surface.

(3) In the polishing apparatus of claim 3, since the elastic ring body is attached to the outer peripheral portion of the work driving roller, the rotation of the work driving roller is reliably transmitted to the work by friction of the ring body, The work can be rotated.
Further, the work can be pressed against the work positioning means by the inclined surface of the outer peripheral surface of the ring body to suppress the rotational shake of the work.

(4) In the polishing apparatus of claim 4, the polishing tape can be brought into contact with the surface to be polished of the work by pressing the free end side of the rotation lever against the work, and the rotation arm and The work can be held between the work drive roller and the work drive roller.

(5) In the polishing apparatus according to a fifth aspect of the present invention, the rotary lever is provided with a concave groove, and when the polishing tape is pressed against the surface to be polished of the work, the polishing tape is bent and the polishing tape is moved to a predetermined position. The surface to be polished of the work can be brought into contact with the pressure.

[Brief description of drawings]

FIG. 1 is a side view showing the outline of a polishing apparatus.

FIG. 2 is a sectional view of a work driving roller.

FIG. 3 is a plan view of a work positioning means portion.

FIG. 4 is a sectional view of a work positioning means portion.

FIG. 5 is an explanatory view showing the relationship between the widths of the tape guide, the polishing tape, and the free lever side of the rotating lever.

FIG. 6 is a side view of the state in which the rotating lever is in the first position.

FIG. 7 is a side view of the state where the rotating lever is in the second position.

FIG. 8 is a side view of the state in which the rotating lever is in the third position.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is a sectional view of a polishing tape moving means.

FIG. 11 is a sectional view of a modified example of the work driving roller.

FIG. 12 is a partially cutaway side view of a modified example of the rotating lever.

FIG. 13 is a perspective view of a tape guide.

FIG. 14 is a perspective view showing the outline of a conventional polishing apparatus.

FIG. 15 is a perspective view showing a conventional problem.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Polishing device 2 ... Work drive roller 3 ... Work supply means 4 ... Work positioning means 5 ... Polishing tape 12 ... Elastic ring body 41 ... Rotating lever 42 ... Lever drive member 43 ... Pivot shaft 45 ... Polishing tape receiving Concave groove (escape groove) 51 ... Abrasive tape moving means 101 ... Tape guide 102 ... Tape running surface 103, 104 ... Upper and lower flanges

Claims (5)

[Claims] 1. A work drive roller for rotating a work as an object to be polished, work supply means for supplying the work toward a peripheral surface of the work drive roller, and the work supplied by the work supply means. A polishing apparatus comprising: a work positioning means for holding the work driving roller at a position in contact with the peripheral surface of the work driving roller; and a polishing tape pressing means for pressing a polishing tape against the surface to be polished of the work positioned by the work positioning means. . 2. The polishing apparatus according to claim 1, further comprising polishing tape moving means for moving the polishing tape in the tape width direction with respect to the surface to be polished of the work. 3. The work driving roller according to claim 2, wherein the work driving roller has an elastic ring body on an outer peripheral portion thereof, and an outer peripheral surface of the ring body is inclined to generate a force in a direction for pressing the work against the work positioning means. Polishing device formed on the surface. 4. The polishing tape pressing means according to claim 2, wherein a part of the polishing tape is wound around one end side, and the other end side is rotatably supported by a pivot shaft. A lever and a lever driving member for pressing the polishing tape wound around one end of the rotating lever onto the surface to be polished of the work by rotating the rotating lever about the pivot shaft. A polishing device comprising. 5. The polishing apparatus according to claim 4, wherein the rotating lever has a clearance groove for receiving the polishing tape on a surface that abuts the surface to be polished of the work through the polishing tape.