JPH11198015A - Texture processing device for head disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a polishing roller to make a reciprocating motion at a high speed with high accuracy. SOLUTION: A texture processing device for a hard disk is provided with a first sliding member 10 supported so that it can make a rectilinear motion in the X-axis direction of a base 50, a motor 1 for the first sliding member 10 to make an x-axis rectilinear motion, shaft members 16A, 16B locked so that they can make a relative movement in the Y-axis direction of the sliding member 10, sliding guides 17A, 17B for supporting the shaft members 16A, 16B slidably in the X-axis direction, second sliding members 19A, 19B supported slidably in the Y-axis direction to the base 50, a first cylinder 30 for driving the second sliding members 19A, 19B in the direction to separate them, a second cylinder 37 for driving the second sliding members 19A, 19B in the direction to come close to each other, and rollers 25A, 25B rotatably mounted on the end of the shaft members 16A, 16B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk texture processing apparatus for performing a texturing process as a surface polishing process of a hard disk.

[0002]

2. Description of the Related Art Conventionally, there has been known an apparatus for performing a texturing process as a surface polishing process of a hard disk. In this conventional apparatus, polishing is performed by sandwiching a hard disk between a pair of rollers around which a polishing tape is wound, and reciprocating the rollers in a radial direction of the disk.

[0003]

However, Japanese Patent Laid-Open Publication No. Hei 3 (1990) -1990 reciprocates the polishing roller in the radial direction of the disk.
The conventional mechanism such as that disclosed in Japanese Patent No. 237620 has a problem that the reciprocating portion has a large inertia, cannot perform high-speed reciprocating motion, and causes vibration of the entire machine on which the reciprocating device is mounted. there were.

Further, a shaft on which a polishing roller is mounted is pressed against a cam by a spring.
In the case of adopting a conventional structure such as disclosed in Japanese Patent No. 5270, a phenomenon in which the reciprocating motion of the shaft cannot follow the reciprocating motion of the shaft at a high speed and the bouncing motion appears, so that the rotation of the cam cannot be increased. It has been difficult to shorten the tact and improve productivity.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a hard disk texture processing apparatus capable of reciprocating a polishing roller at high speed and with high precision.

[0006]

Means for Solving the Problems The above-mentioned problems are solved,
In order to achieve the object, a hard disk texture processing device according to the present invention is a hard disk texture processing device for performing a texturing process, which is a surface polishing process of a hard disk. A first slide member supported by
A driving means for causing the first slide member to reciprocate linearly in the x-axis direction, and being locked to the first slide member so as to be relatively movable in a y-axis direction orthogonal to the x-axis direction. A pair of shaft members, and the pair of shaft members
A pair of slide guides for slidably supporting in the axial direction; and a pair of slide guides slidably supported in the y-axis direction with respect to the apparatus main body.
A pair of second slide members for approaching and separating in the axial direction, driving means for driving the pair of second sliding members in a direction for approaching and separating, and rotation of the tip of the pair of shaft members And a pair of rollers which are freely attached and are wound around a polishing tape for polishing the surface of the hard disk.

A hard disk texture processing apparatus according to the present invention is a hard disk texture processing apparatus for performing a texturing process, which is a surface polishing process of a hard disk, comprising: a base; and an x-axis direction with respect to the base. A first slide member supported so as to be capable of linear movement, a driving means fixed to the base, and a linearly reciprocating movement of the first slide member in the x-axis direction; On the other hand, a pair of shaft members locked so as to be relatively movable in a y-axis direction orthogonal to the x-axis direction,
A pair of slide guides for slidably supporting the pair of shaft members in the x-axis direction, and a pair of slide guides slidably supported in the y-axis direction with respect to the base; A pair of second sliding members for approaching and separating in a direction, and fixed to the base;
First drive means for driving the pair of second slide members in a direction to separate them, second drive means for driving the pair of second slide members in a direction to approach the pair, and the pair of second slide members. And a pair of rollers rotatably mounted on the tip of the shaft member and having a polishing tape wrapped around the surface of the hard disk.

Further, in the texture processing apparatus for a hard disk according to the present invention, the driving means includes a motor, an eccentric shaft attached to a rotating shaft of the motor, and an eccentric shaft formed on the first slide member. It is characterized by comprising a shaft and an elongated hole to be fitted.

Further, in the texture processing apparatus for a hard disk according to the present invention, a speed control motor or an induction motor is used as the motor.

[0010] In the texture processing apparatus for a hard disk according to the present invention, the pair of slide guides may be independent of the pair of second slide members in an xy plane defined by the x axis and the y axis. It is characterized by being rotatably supported so as to be adjustable.

In the texture processing apparatus for a hard disk according to the present invention, a micrometer for finely adjusting a rotation angle of the pair of slide guides with respect to the pair of second slide members in the xy plane is further provided. It is characterized by having.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing the structure of a hard disk texture processing apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. FIG. 3 is a view in which a substrate 50 is omitted when viewed from a direction B. FIG. 4 is a partially enlarged view of FIG. 1, and FIG.
FIG.

1 to 5, a substrate 50 as a base of the apparatus extends horizontally, and a linear guide 12 extending in the x-axis direction in FIG. A slide member 10 is attached to the linear guide 12 via a slider 12a of the linear guide 12, whereby the slide member 10 is guided by the linear guide 12 and slidable in the x-axis direction. . The right end of the slide member 10 in FIG. 2 is slightly wider than the outer diameter of a cam roller 6 described later.
An elongated hole 10a extending in the middle z-axis direction is formed, and the cam roller 6 is inserted into the elongated hole 10a.

On the other hand, a falling portion 50a that falls vertically downward is formed on the substrate 50, and the motor 1 is fixed to the falling portion 50a in a state where the rotation axis of the motor 1 is parallel to the y-axis. Have been. A cam roller shaft 3 is connected to a rotation shaft of the motor 1 via a coupling 2.
Has been fixed. The cam roller shaft 3 is rotatably supported by the substrate 50 via the posts 5, 7 and the bearings 4, 4A. The cam roller 6 is eccentrically attached to the cam roller shaft 3 as shown in FIG. Therefore, when the motor 1 rotates, the cam rollers 6
Are rotated eccentrically with respect to the rotation axis of the motor 1, whereby the slide member 10 engaged with the outer circumference of the cam roller 6 is rotated.
Reciprocates linearly in the x-axis direction.

At the left end in FIGS. 1 and 2 of the slide member 10, there is formed a locking portion 13 extending in the y-axis direction in a U-shape with a cross section opened downward. As shown in FIG. 1, rollers 14A, 14B of driven members 15A, 15B arranged on both sides of the x-axis
Is inserted. Support shafts 16A, 16A for supporting polishing rollers 25A, 25B for polishing the surface of the hard disk 60 are provided on left end portions of the driven members 15A, 15B.
16B is attached. Polishing rollers 25A, 25
B is rotatably attached to the distal ends of the support shafts 16A and 16B around an axis parallel to the x-axis. Also,
The support shafts 16A, 16B are provided with bearing members 17A, 1
7B slidably supports in the x-axis direction.
Therefore, when the slide member 10 reciprocates in the x-axis direction due to the rotation of the motor 1, the driven member 15
A, 15B and the support shafts 16A, 16B also reciprocate in the x-axis direction. As a result, the polishing rollers 25A, 25B reciprocate in the radial direction of the hard disk 60. The driven members 15A and 15B have another support shaft 20 parallel to the support shafts 16A and 16B.
A, 20B are also fixed.
0A and 20B are supported by slide members 19A and 19B by bearing members 21A and 21B.

The bearing members 17A and 17B are made of a sleeve 1
It is attached to slide members 19A and 19B via 8A and 18B. The slide members 19A and 19B are
The linear guide 39 is fixed to the sliders 39A and 39B via the intermediate substrates 38A and 38B. The linear guide 39 extends in the y-axis direction and is attached to the lower surface of the substrate 50, and supports the slide members 19A and 19B so as to be slidable in the y-axis direction. Thereby, the support shafts 16A and 16B and the polishing rollers 25A and 25B are
As described above, it reciprocates in the x-axis direction and can approach and move in parallel with each other in the y-axis direction. The driven members 15A and 15B are provided with rollers 14A and 14B.
, And is relatively movable with respect to the slide member 10 along the longitudinal direction (y-axis direction) of the locking portion 13.

Vertical substrates 35A and 35B are provided upright on the upper surfaces of the intermediate substrates 38A and 38B. An air cylinder 37 is attached to one vertical substrate 35B, and the tip of a piston rod 37a is attached to the other vertical substrate 35A.
It is connected to the. The piston rod 37a is constantly retracted by the air cylinder 37.
The vertical substrates 35A and 35B are constantly urged to approach each other. As a result, the intermediate substrates 38A, 38
B, slide members 19A, 19B, support shaft 16
The polishing rollers 25A, 25B connected to the vertical substrates 35A, 35B via A, 16B are urged in directions approaching each other. Thereby, the polishing rollers 25A, 25B
Will sandwich the hard disk 60. Further, on the upper portions of the vertical substrates 35A and 35B, the rotating rollers 36A,
36B is attached.

An air cylinder 30 is mounted on the upper surface of the substrate 50, and a wedge member 31 is mounted on the tip of the piston rod 30a. The wedge member 31 is disposed at the center between the rotating rollers 36A and 36B, and the air cylinder 30 is connected to the piston rod 30a.
, The wedge member 31 enters between the two rotating rollers 36A and 36B, and opposes the urging force of the air cylinder 37.
6B are separated from each other. Thereby, the polishing roller 25
A and 25B are also separated from each other. Thereby, the polishing rollers 25A and 25B separate from the hard disk 60.

The air cylinder 30 has an L-shaped substrate 3
2, an adjusting screw 33 is attached. The amount of screwing of the adjusting screw 33 changes the piston rod 30a.
The stop position can be adjusted. Thereby, the opening position of the polishing rollers 25A, 25B can be adjusted to a position close to the surface of the hard disk, and the occurrence of a dent when the polishing tapes 70A, 70B contact the hard disk 60 can be prevented.

A polishing tape 7 for polishing the surface of the hard disk 60 is provided on the polishing rollers 25A and 25B.
0A and 70B are wound. Polishing tape 70
A and 70B are supplied to the polishing rollers 25A and 25B from a tape supply mechanism described later.

The sleeves 18A and 18B are rotatably mounted on the slide members 19A and 19B in the xy plane with the reamer bolts 23A and 23B (23B not shown) as the center of rotation. The movement amount can be adjusted by micrometers 22A and 22B (22B is not shown). Thereby, the polishing roller 2
The degree of parallelism of the 5A and 25B with respect to the hard disk surface can be adjusted.

Next, the operation of the texture processing apparatus configured as described above will be described.

First, the air cylinder 30 is pushed out to separate the two polishing rollers 25A and 25B from each other. The hard disk 60 is set at the center of these polishing rollers, and the disk is rotated. Next, the motor 1
While rotating the air cylinder 30, the air cylinder 30 is pulled in, and the polishing rollers 25A, 25B are brought close to each other by the urging force of the air cylinder 37, and the hard disk 6
Insert 0. Thereby, the polishing rollers 25A, 25B
Reciprocates in the radial direction (x-axis direction) of the hard disk 60, and the hard disk is polished.

FIG. 6 shows the tape supply mechanism 10 described above.
FIG. 2 is a diagram showing a configuration of a zero.

In FIG. 6, the tape supply mechanism 100 includes:
It comprises a left half 150 supplying the polishing tape 70A to the polishing roller 25A and a right half 152 supplying the polishing tape 70B to the polishing roller 25B. The left half 150 and the right half 152 have exactly the same structure symmetrically with the hard disk 60 as the center.
Only the configuration of 52 will be described.

An unwinding reel 102 on which a polishing tape 70B is wound in a roll is rotatably disposed above a substrate 101 constituting a base of the tape supply mechanism 100. The unwinding reel 102 is supplied with a polishing tape 70B by a torque motor 104 fixed to the substrate 101.
Is applied in the direction of arrow C opposite to the feed direction (direction of arrow D). The driving force of the torque motor 104 is transmitted to the unwinding reel 102 by a transmission mechanism (not shown) including a gear mechanism or a belt mechanism.

The polishing tape 70B unwound from the unwinding reel 102 is wound around the polishing roller 25B via a tension roller 106, an idle roller 108, and a guide roller 110. The polishing tape 70B wound on the polishing roller 25B is further wound on a take-up reel 120 via a guide roller 112, an idle roller 114, a tape feed roller 116, and an idle roller 118.

The tension roller 106 includes a substrate 101
By the torque motor 122 fixed to the
The torque is applied in a direction indicated by an arrow E opposite to the feed direction of 0B. The driving force of the torque motor 122 is transmitted to the tension roller 106 by a transmission mechanism (not shown) including a gear mechanism or a belt mechanism. Further, a pressing mechanism 124 for pressing the polishing tape 70B against the tension roller 106 is disposed near the tension roller 106. The pressing mechanism 124 includes an arm 128 rotatably supported on the substrate 101 about a fulcrum 126, a pressing roller 130 rotatably attached to a tip end of the arm 128, and an opposite side of the arm 128. And an air cylinder 132 connected to the end. Piston rod 132a of air cylinder 132
Is pushed out, the pressing roller 13 is pressed.
0 presses the polishing tape 70B against the tension roller 106 to prevent the tension roller 106 and the polishing tape 70B from slipping.

On the other hand, the tape feed roller 116
The polishing tape 70B is rotationally driven in the feed direction (the direction of arrow F) of the polishing tape 70B by a motor 134 whose rotational speed can be controlled, such as a servo motor fixed to 01 or an induction motor with an inverter. The rotation of the tape feed roller 116 serves as a drive source for unwinding the polishing tape 70B from the unwinding reel 102. The pressing mechanism 124 described above is also provided near the tape feed roller 116.
Are arranged to prevent the tape feed roller 116 and the polishing tape 70B from slipping. The servo motor 1
The driving force of 34 is transmitted to the tape feed roller 116 by a transmission mechanism (not shown) including a gear mechanism or a belt mechanism.

The polishing tape 70 is mounted on the take-up reel 120 by a torque motor 136 fixed to the substrate 101.
Torque is applied in the feed direction of B (direction of arrow G), whereby the polishing tape 70B unwound by the tape feed roller 116 is taken up. Torque motor 136
Is transmitted to the take-up reel 120 by a transmission mechanism (not shown) including a gear mechanism or a belt mechanism.

The tape supply mechanism 1 configured as described above
00, the torque motor 104 and the torque motor 1
The motor 22 generates a torque in a direction opposite to the feeding direction of the tape unwound by the servomotor 134, but also acts as a brake due to the characteristics of the torque motor. Thus, if the unwinding reel 102 and the tape feed roller 1
Even if the polishing tape 70 </ b> B becomes slack between the polishing tape 70 </ b> B and the polishing tape 70 </ b> B, the polishing tape 70 </ b> B can be automatically wound on the unwinding reel 102 and restored.

Since the torque of each torque motor can be arbitrarily set by a variable volume disposed outside the apparatus, the torque motor can be adjusted by operating the variable volume while checking the tension of the tape using a spring meter or the like. is there.
The unwinding reel 102 and the take-up reel 120
It is expected that the tension will change due to the change in the outer diameter of the wound tape. However, in the case of a torque motor, as shown in FIG. Is kept substantially constant.

As an initial setting, the unwinding reel 102
The tension of the tension roller 106 is set lower than the tension of the torque motor 104 and the torque motor 136 of the take-up reel 120, and the tension of the tension roller 106 is changed by operating a variable volume.
A well-balanced and stable tape running becomes possible.

As described above, according to the above embodiment, since the opening and closing mechanism of the polishing rollers 25A and 25B does not have the inertial mass of the reciprocating motion of the polishing roller, high-speed reciprocating motion becomes possible and the polishing process can be performed. Takt time can be reduced.

Since the polishing rollers 25A and 25B are pressed against the hard disk by the air cylinder instead of the spring, it is possible to prevent the polishing roller from jumping from the hard disk due to the damping action of the air cylinder.

[0037]

As described above, according to the present invention,
Since the opening / closing mechanism of the polishing roller does not become the inertial mass of the reciprocating motion of the polishing roller, high-speed reciprocating motion becomes possible, and the tact time of the polishing process can be reduced.

Further, the eccentric shaft is provided with a long hole to be fitted, so that even if the eccentric shaft rotates at a high speed, the reciprocating motion of the polishing roller and the shaft member cannot follow the eccentric shaft. It does not jump out of the long hole where the shaft fits.

[0039]

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a hard disk texture processing apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view in which a substrate 50 is omitted when FIG. 2 is viewed from the direction of arrow B;

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a partially enlarged view of FIG. 2;

FIG. 6 is a diagram showing a configuration of a tape supply mechanism.

FIG. 7 is a diagram showing characteristics of a torque motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 6 Cam roller 10 Slide member 12 Linear guide 17A, 17B Bearing member 19A, 19B Slide member 16A, 16B Support shaft 25A, 25B Polishing roller 30, 37 Air cylinder 31 Wedge member 39 Linear guide 50 Substrate 60 Hard disk 70A, 70B Polishing tape REFERENCE SIGNS LIST 100 tape supply mechanism 102 unwind reel 106 tension roller 116 tape feed roller 120 take-up reel 124 pressing mechanism

Claims (4)

[Claims] 1. A hard disk texture processing apparatus for performing a texture processing as a surface polishing processing of a hard disk, comprising: a first slide member supported so as to be able to linearly move in an x-axis direction with respect to an apparatus main body; A driving unit for causing the first slide member to reciprocate linearly in the x-axis direction; and a pair of first and second slide members locked to be relatively movable in the y-axis direction orthogonal to the x-axis direction. A pair of slide guides for slidably supporting the pair of shaft members in the x-axis direction; and a pair of slide guides slidably supported in the y-axis direction with respect to the apparatus body. A pair of second slide members for moving the guide toward and away from the y-axis direction, and a guide for driving the pair of second slide members toward and away from each other. And a pair of rollers rotatably attached to the tips of the pair of shaft members and having a polishing tape wound thereon for polishing the surface of the hard disk. Texture processing equipment. 2. A texturing apparatus for a hard disk for performing a texture processing as a surface polishing processing of a hard disk, comprising: a base; and a first slide supported so as to be able to linearly move in the x-axis direction with respect to the base. A member, fixed to the base, driving means for causing the first slide member to reciprocate linearly in the x-axis direction, and y perpendicular to the x-axis direction with respect to the first slide member. A pair of shaft members locked to be relatively movable in the axial direction; a pair of slide guides for slidably supporting the pair of shaft members in the x-axis direction; and the y-axis with respect to the base. A pair of second slide members that are slidably supported in a direction, and that allow the pair of slide guides to approach and separate in the y-axis direction; and a pair of the second slide members fixed to the base. A first driving unit for driving the pair of second slide members in a direction to approach the pair of second slide members; a first driving unit for driving the pair of second slide members in a direction to approach the pair of shaft members; A hard disk texture processing apparatus, comprising: a pair of rollers rotatably mounted and having a polishing tape wound thereon for polishing the surface of the hard disk. 3. The driving means includes a motor, an eccentric shaft attached to a rotating shaft of the motor, and an elongated hole formed in the first slide member and fitted to the eccentric shaft. The hard disk texture processing apparatus according to claim 1, wherein the hard disk texture processing apparatus is configured. 4. The pair of slide guides are rotatably supported on the pair of second slide members independently of each other within an xy plane defined by the x-axis and the y-axis. The texture processing apparatus for a hard disk according to claim 1, wherein: