JP2001216636A - Disk positioning method, method and device for manufacturing disk drive, and method and device of magneitc transfer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To position a disk without using any disk only positioning jigs or adding any new components, such as a bidirectional actuator or the like, in a device for performing assembling, carrying or the like by positioning a disk, such as a hard disk drive. SOLUTION: A robot arm 4 as a contact body is provided with a contact body 5 brought into contact with the two or more places of a disk 1, the contact body 5 is brought into first contact with the disk 1 by moving the robot arm 4, then the robot arm 4 is further moved to bring the contact body 5 into second contact with the disk 1, and thereby the disk 1 is positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a method for positioning a disk of a hard disk, a method and an apparatus for manufacturing a disk drive by positioning a disk, and magnetically transferring information of a master disk to the positioned disk. The present invention relates to a magnetic transfer method and apparatus.

[0002]

2. Description of the Related Art Conventionally, as an example of a device for positioning and carrying a disk for transport and assembly, a device for assembling a hard disk drive and a magnetic transfer device for magnetically transferring information from a master disk to a disk are known. A hard disk drive is composed of several magnetic disks, their corresponding heads, and electronic circuits for recording and reproduction. It is previously written as a magnetic signal on the disk. To write such information, the write head of the hard disk drive itself can be used, but it is also possible to collectively perform magnetic recording by transfer using a master disk prepared in advance.

FIG. 9 is a schematic view of a conventional hard disk drive assembling apparatus, in which 1 is a disk, 2 is a cassette containing a disk 1 to be supplied to the apparatus, and 3 is a disk that pushes the disk 1 out of the cassette 2. An extruder 4 is a table on which the disk 1 taken out by the disk extruder 3 is placed, and 5 is a positioning jig for positioning the disk 1 by ascending to form a tapered projection. A driving device for moving the positioning jig 5 up and down, 7 is a suction unit as holding means for the positioned disk 1, 8 is a robot arm provided with the suction unit 7 to transport and assemble the disk 1, 9 is a hard disk drive This is a stage for assembling.

[0004] By the way, data is recorded over a wide area on the surface of the disk 1, and when sucking, the sucking position must be performed at a position other than the data area. Since the position of the disk 1 transported in the cassette 2 in the cassette 2 is incorrect, it is necessary to position the disk 1 before suction. Further, since a large number of disks 1 are stored in the cassette 2, the disks 1 are once taken out of the cassette 2 by the disk pusher 3 one by one to the placing table 4.
By moving the positioning jig 5 whose tip is a tapered projection to the circular opening of the disk 1 from below, the circular opening of the disk 1 follows the taper.
The disk 1 is positioned. The positioned disk 1 is sucked by the suction unit 7 and transported to the stage 9 by the robot arm 8.

FIG. 10 shows a magnetic transfer apparatus for magnetically transferring information of a master disk to a disk in a hard disk drive assembling apparatus.
The disk 1 transported by the transport means (not shown) from the previous process is fixed by vacuum suction. A master disk 10 is held at an upper position of the disk 1 by an arm 11 having a slider mechanism that can move up and down.
The master disk 10 is set on the disk 1 by the arm 11. Then, disk 1 and master disk 1
0, the permanent magnet 12 is brought close to the upper surface of the master disk 10 and rotated by rotating means (not shown) along the master disk 10 so that the information on the master disk 10 Is transferred to

[0006]

However, in positioning the disk 1 using the positioning jig 5 shown in FIG. 9, the disk extruder 3 for extruding the disk 1 from the cassette 2 and the positioning jig 5 are moved up and down. And a drive device 6 for the device is required, and the entire device becomes complicated. The shape of the positioning jig 5 is fixed by the size of the circular opening of the disk 1, and when the disk 1 having a different circular opening is conveyed, the positioning jig 5 must be replaced each time. Had. Further, when there is no circular opening in the disk 1, positioning is performed by regulating the outer shape of the disk 1 with two actuators in a normal direction and a direction perpendicular to the outer shape of the disk 1. There was a problem that it became complicated.

[0007] In the method shown in FIG.
However, there is a problem that the positioning of the disk 1 and the master disk 10 is difficult.

The present invention solves the above-mentioned problems, and realizes the positioning of a disk without the need for a positioning jig or the like.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention firstly makes a contact member make a first contact with a disk, and further makes this contact member make a second contact with the disk to form the disk. Is performed.

In the method of manufacturing a disk drive according to the present invention, first, the contact body is brought into first contact with the disk, and further, the contact body is brought into second contact with the disk to position the disk. The held disk is transported to an assembly stage.

Further, in the magnetic transfer method of the present invention, the contact body is brought into contact with the disk at two or more positions to position the disk and perform magnetic transfer.

[0012]

FIG. 1 shows a first embodiment of a disk drive manufacturing apparatus using the disk positioning method of the present invention. A disk 1 is stored in a cassette 2 and supplied to the apparatus. The position of the disk 1 in the cassette 2 is only roughly determined, and the exact position is unknown.
The contact body 13 is provided on the robot arm 8 and
Is inserted by the robot arm 8 into the circular opening. By the way, since the circular opening of the disc 1 is known, the shape of the contact body 13 can be adjusted to the circular opening of the disc 1, and the distance between the two contact points of the contact body 13 in the final contact state is The radius is set to の 2 times the radius of the circular opening of the disk 1 (hereinafter referred to as r1). In this way, the center of the disk 1 is located at a distance of (√2) / 2 times r1 from the midpoint between the two contact points. In other words, the disk 1 can be positioned.

FIG. 2 is a view showing a process for positioning the disk 1, and FIG. 2A shows a state where the contact body 13 is inserted into the circular opening of the disk 1 by the robot arm 8. At this time, the disc 1 and the contact body 13 are not in contact. Next, the robot arm 8 is moved in a direction perpendicular to a straight line connecting two contact points of the contact body 13 with the disk 1 and in a direction normal to the circular opening of the disk 1.
As shown in FIG. 2B, the contact body 13 and the circular opening of the disk 1 are in a state of first contact. At this time, contact body 1
The direction of the force acting on the disk 1 from 3 is approximately 45 degrees with the moving direction of the robot arm 8. Further, by further moving the robot arm 8 in the same direction, the disc 1 is rotated around the contact point while the disc 1 and the contact body 13 are in contact with each other, so that the contact body 13 and the circular opening of the disc 1 The two contacts are made, and the contact body 13 and the disk 1 come into contact with each other at two places as shown in FIG. That is, the disk 1 is positioned. Therefore, the center of the positioned disk 1 and the robot arm 8 shown in FIG.
The disc 1 is sucked by the suction unit 7 with the center of the suction unit 7 provided in the
Transport to

Although the distance between the two contact points of the contact body 13 in the final contact state is set to √2 times r1, it is not necessarily required to be √2 times. It is sufficient that the arrangement is such that a force acts on the disk 1 from the contact body 13. In particular, the required positioning accuracy in a certain direction (X direction) and the direction perpendicular to that direction (Y
If the required positioning accuracy is different,
The distance between the two contact points of the contact body 13 in the final contact state so that the direction in which the force acts on the circular opening of the disk 1 from the contact body 13 is adjusted to the ratio of the required positioning accuracy in the X and Y directions. Should be determined. The direction in which the robot arm 8 is moved may be such that the disc 1 and the contact body 13 eventually come into contact with each other at two or more places, and are necessarily perpendicular to the straight line connecting the two contact points and the circular shape of the disc 1. It does not have to be in the normal direction of the opening. Further, the shape of the contact body 13 does not need to be the one shown in FIG. 2, and the distance between two contact points of the contact body 13 in the final contact state may be a predetermined one. One protrusion 14 or a tapered shape may be used.

FIG. 4 shows a second embodiment of the disk drive manufacturing apparatus according to the present invention. The disk 1 is stored in a cassette 2 and supplied to the apparatus. The position of the disk 1 in the cassette 2 is only roughly determined, and the exact position is unknown. The contact body 15 is a robot arm 8
It is provided in. By the way, since the outer shape of the disk 1 is known, the shape of the contact body 15 can be matched to the outer shape of the disk 1, and the distance between the two contact points of the contact body 15 in the final contact state is equal to the outer shape of the disk 1. (Hereinafter referred to as r2)） 2 times. In this way, the center of the disk 1 is located at a distance of (） 2) / 2 times r2 from the midpoint between the two contact points. In other words, the disk 1 can be positioned.

FIG. 5 is a view showing a step of positioning the disk 1. FIG.
Indicates a state where the disk 1 is moved to the vicinity of the outer shape of the disk 1. At this time, the disc 1 and the contact body 15 are not in contact. Further, the contact body 15 has a concave surface 16 at an angle of 90 degrees. At this time, the distance between two contact points of the contact body 15 in the final contact state is √2 times r2. Next, the robot arm 8 is moved in a direction perpendicular to a straight line connecting two contact portions of the contact body 15 with the disk 1 and in a direction normal to the outer shape of the disk 1, so that the contact body 15 shown in FIG. And the outer shape of the disk 1 is in a state of first contact (the disk 1 is in contact with one of the two surfaces forming the concave surface 16). At this time, the direction of the force acting on the disk 1 from the contact body 15 is 45 degrees with the moving direction of the robot arm 8. Further, by further moving the robot arm 8 in the same direction, the disc 1 is rotated around the contact point while the disc 1 and the contact body 15 are in contact with each other. 5 (c), the contact body 15 and the disk 1 come into contact with each other at two places (the two surfaces forming the concave surface 16 are in contact with the outer shape of the disk 1). That is, the disk 1 is positioned. In addition, since the concave surface 16 is in contact with the disk 1, even when the disk 1 has a different outer shape, positioning can be performed only by changing the contact position. Then, the center of the positioned disk 1 is aligned with the center of the suction unit 7 provided on the robot arm 8 shown in FIG. 4, and the disk 1 is suctioned by the suction unit 7 and transferred to the stage 9 by the robot arm 8.

Although the concave surface 16 of the contact body 15 is set to 90 degrees, the angle is not necessarily required to be 90 degrees, and the angle at which a force acts on the disk 1 from the contact body 15 in a direction perpendicular to the movement of the robot arm 8. It should just be. In particular, when the required positioning accuracy in a certain direction (X direction) is different from the required positioning accuracy in a direction perpendicular to the direction (Y direction), a force is applied from the contact body 15 to the outer shape of the disk 1. The distance between the two contact points of the contact body 15 in the final contact state, that is, the angle of the concave surface 16 may be determined so that the acting direction is adjusted to the ratio of the required positioning accuracy in the X and Y directions. The direction in which the robot arm 8 is moved may be such that the disc 1 and the contact body 15 are finally brought into contact with each other at two or more places, and are necessarily perpendicular to a straight line connecting the two places and the outer shape of the disc 1. The direction does not have to be the normal direction. Further, the concave surface 16 is formed on the contact body 15, but the contact body 15 may be provided with two projections 17 as shown in FIG. 6, for example.

FIG. 7 shows an embodiment of a magnetic transfer apparatus using the positioning method of the present invention. In FIG. 7, the disk 1 is held on a disk holding portion 18 by vacuum suction. The master disk 10 is a master disk holding part 20 having a slider part 19 which can move linearly in the horizontal direction.
Is held by This master disk holder 2
The master disk 10 comes into contact with the disk 1 by horizontally moving the “0” by the slider section 19. Then, by bringing the master disk 10 and the disk 1 into close contact with each other and applying an external magnetic field by the permanent magnet 12, information on the master disk 10 is magnetically transferred to the disk 1. In each of these steps, the surface where the master disk 10 and the disk 1 are brought into close contact with each other is vertical, and as shown in FIG.
Since a downflow that flows from the top to the bottom occurs, even if dust or the like falls for some reason, the dust does not get on the surfaces of the master disk 10 and the disk 1.

FIG. 8 is an explanatory view of a method of positioning a disk in the magnetic transfer apparatus shown in FIG.
At a position corresponding to the circular opening of the disk 1 and
Two projections 21 which are horizontally arranged contact members are provided, and the two projections 21 do not protrude from the surface of the disk 1 which is in close contact with the master disk 10 when the disk 1 is held. With this configuration, when the disk 1 is held by the disk holding unit 18, the disk 1
The disk 1 is positioned and held so that the circular opening of the disk 1 fits over the two projections 21. Next, at the time of magnetic transfer, the two projections 21 do not come into contact with the master disk 10, so that the master disk 10 is not damaged.

The two projections 21 need not always be arranged horizontally, but the arrangement and the material of the two projections 21 are changed in order to intentionally change the state of contact between the contact body and the circular opening. You may. Further, the projections need not be two, and may be integral.

[0021]

As described above, according to the present invention, there is an advantageous effect that the disk can be positioned so that the contact body and the disk are brought into contact with each other at two or more places.

Further, even if the disc shape is different from the conventional one which cannot be dealt with without changing the jig shape, if the disc and the contact body can be brought into contact at two or more places,
The advantageous effect that the disc can be positioned can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a disk drive manufacturing apparatus according to a first embodiment of the present invention;

2A is a diagram showing an initial state in which a contact body is inserted into a circular opening of a disk; FIG. 2B is a diagram showing a state in which the circular opening of the disk and a contact body make a first contact; The figure which shows the state where the circular opening and the contact body of the

FIG. 3 is a diagram showing a contact state between a positioned disk and a contact body (projection).

FIG. 4 is a schematic diagram of a disk drive manufacturing apparatus according to a second embodiment of the present invention;

FIG. 5A is a diagram showing an initial state in which a contact body is moved near the outer shape of a disk; FIG. 5B is a diagram showing a state in which the outer shape of the disk is in first contact with the contact body; Figure showing the state where the contact body and the contact body are in two places

FIG. 6 is a diagram showing a contact state between a positioned disk and a contact body (projection).

FIG. 7 is a schematic diagram of a magnetic transfer apparatus according to the present invention.

FIG. 8 is an explanatory diagram of a positioning method of the magnetic transfer apparatus according to the present invention.

FIG. 9 is a schematic diagram of a conventional hard disk assembling apparatus.

FIG. 10 is a schematic diagram of a conventional magnetic transfer device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk 7 Suction part 8 Robot arm 9 Stage 10 Master disk 13 Contact body 14 Projection 15 Contact body 16 Concave surface 17 Projection 18 Disk holding part 19 Slider part 20 Master disk holding part 21 Projection

Claims (14)

[Claims] A step of moving a contact body driven by driving means to make a first contact between the contact body and the disk; and moving the contact body by moving the contact body with the disk to form a second contact with the disk. And a step of sequentially contacting the disk. 2. In positioning a disk having a circular opening, a step of moving a contact body driven by driving means into the circular opening, and the step of moving the contact body until the disk makes a first contact with the disk. A disk positioning method in which the step of moving and the step of moving the contact body until it makes a second contact with the disk are sequentially performed. 3. The disk positioning according to claim 2, wherein the distance between the position of the first contact and the position of the second contact is approximately √2 times the radius of the circular opening. Method. 4. A step of moving a contact body driven by a driving means until the contact body makes a first contact with the outer shape of the disk, and a step of moving the contact body until it makes a second contact with the outer shape of the disk. And a disk positioning method for sequentially performing the following. 5. The disk positioning method according to claim 4, wherein the distance between the position of the first contact and the position of the second contact is approximately √2 times the radius of the outer shape. 6. A method of manufacturing a disk drive, comprising: a step of holding a disk positioned by the method according to claim 1, and a step of transporting the held disk to an assembly stage. 7. A disk drive manufacturing method comprising: a contact body that comes into contact with a disk at two places; a driving unit that drives the contact body; a holding unit that holds the disk; and a transport unit that transports the held disk. apparatus. 8. The disk according to claim 1, wherein the disc has a circular opening, and a distance between two contact positions of the contact body that comes into contact with the circular opening is approximately √2 times a radius of the circular opening. The disk drive manufacturing apparatus according to claim 7, wherein: 9. The disk drive manufacturing apparatus according to claim 7, wherein a distance between two contact positions of the contact body that contacts the outer shape of the disk is approximately √2 times a radius of the outer shape. . 10. A disc surface having a circular opening is held in a vertical direction, and the disc is brought into contact with the contact body to be positioned by the disc positioning method according to any one of claims 1 to 3. And a step of magnetically transferring information of the master disk to the disk. 11. The magnetic transfer method according to claim 10, wherein, at the time of positioning, two positions where the contact body and the disk contact each other are made horizontal. 12. A disk holding portion for holding a disk surface of a disk having a circular opening in a vertical direction, a contact member provided in the disk holding portion for making contact with the circular opening, and holding a master disk. A magnetic transfer apparatus, comprising: a master disk holding unit to be driven; and a drive unit for bringing at least one of the disk holding unit and the master disk holding unit closer to the surface of the master disk. 13. The magnetic transfer apparatus according to claim 12, wherein at the time of positioning the contact body, two positions where the contact body and the disk are in contact with each other are horizontal. 14. The contact body according to claim 1, wherein when the disc is held by the disc holding part, the contact body does not protrude from a surface that is not in contact with the disc holding part.
14. The magnetic transfer device according to any one of items 2 and 13.