JPH0438533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a device for attaching a head base to a rotatably arranged jig when polishing a magnetic head for video.

(b) Prior Art An example of an apparatus for polishing the tape contacting surface of a magnetic head is disclosed in Japanese Patent Application Laid-open No. 172110/1983. In this case, the head base was manually positioned and fixed with screws to attach it to the rotary plate.

(c) Problems to be solved by the invention However, manual methods such as fixing with screws are not only time consuming and inefficient, but also have the disadvantage that the magnetic head moves during the final tightening. It was hot. Furthermore, if the material is fixed with screws, one-touch feeding and removal is not possible and the equipment becomes larger.

(d) Means for Solving the Problems The head base mounting device of the present invention is a device for mounting the head base of a magnetic head to be polished onto a jig body so that the magnetic head protrudes from the outer periphery of the jig body, A jig main body consisting of a wall part that is rotatably arranged and has an L-shaped wall on the upper surface, and a flat pedestal that defines the bottom surface of a recess facing the wall, and a jig main body that is movable into the jig main body. a pressing means which is provided and abuts against the end of the flat pedestal by a spring means, and a pressing means which temporarily resists the urging force of the spring means when attaching or removing the head base to the jig body and a supply means for supplying the jig body so as to place the head base from above on the jig body.

(E) Function During installation, the jig body is in a stopped state. In this state, the displacement driving means acts to slightly displace the pressing means in a direction against the biasing force of the spring. This enlarges the recess in the jig body,
The head base can be easily supplied to the recess.
When the head base is applied to the recess, the action of the displacement driving means is released and the pressing means returns to its original state by the spring force, clamping the applied head base between it and one surface of the L-shaped wall portion. .

The side surface of the head base that comes into contact with the one surface is the reference surface of the head base itself. The head base can also abut on the other side of the L-shaped portion. The head base is attached to the outer circumferential side of the jig body so that the magnetic head protrudes. When it is necessary to remove the head base after polishing, such as in the polishing process of a magnetic head, the displacement driving means acts on the pressing means again to temporarily enlarge the recessed portion, and in this state, the head base is taken out.

(F) Embodiment FIG. 1 is a plan view showing a magnetic head polishing device and a head base mounting device of the present invention. 1 is a head base mounting device, which includes a rotating jig main body 2, three displacement drive means 3,
It has 4,5. The displacement driving means 3, 4, and 5 are formed by air cylinders, and their shafts 3a, 3b, and 3c move in the directions of the arrows, respectively, and act on the pressing means on the rotating jig main body 2 side.
6 is a first polishing device for polishing by running a relatively rough polishing tape 7 of #8000, and 8 is a second polishing device for polishing by running a tape 9 for fine polishing of #12000. After the head base is inserted into the tool body 2 and the displacement driving means 3, 4, and 5 have retreated, the rotating jig body 2 moves toward the first polishing device 6 and comes into contact with it, and in this state the tape 7 is run. At the same time, the rotating jig main body 2 is rotated to roughly polish the tip of the magnetic head. Thereafter, the rotating jig main body 2 is moved to the second polishing device 8 on the opposite side, and fine polishing is performed there by the second polishing device.

Next, Figure 2 shows the rotating jig main body 2 taken out.
FIG. 4 will be explained. The rotating jig main body 2 consists of a rotating substrate 10, a flat pedestal 11, and a wall portion 12. The wall portion 12 is located at the top and has three L-shaped walls. Recess 13 facing this L-shaped wall
The flat pedestal 11 is arranged under the wall portion 12 so as to define the bottom surface of the wall portion 12. The rotating board 10 has a groove 14 facing a part of the lower surface of the flat pedestal 11, and one end of the rotary board 10 protrudes upwardly into the groove 14, facing one surface 15a of the L-shaped wall. A pressing plate 16 having a pressing piece 16' is attached to the flat holder 1.
1 so that it can come in contact with and slide on the bottom surface of the device.
This situation is clearly shown in the sectional view of FIG. That is, the wall portion 12 and the flat pedestal 11 are fixed to a pin 17 set on the rotating board 10, and the pin 17 and a small pin 18 protruding downward from the pressing plate 16 are connected to each other.
The pressing plate 16 is pressed by a spring 19 stretched between the
is urged toward the pin 17 side and comes into contact with one end of the flat pedestal 11. Note that the press plate 16 is fitted into the pin 17 through a long hole 20, and can be moved within the range of this long hole 20. FIG. 4 shows a state in which the pressing plate 16 has just received an external force and has moved to the maximum extent against the biasing force of the spring 19. In this state, the head base 21 is placed on the flat pedestal 11, When the external force applied to the pressing plate 16 is released, the pressing plate 1
6 pressure contact pieces 16' press the head base 21 toward one side of the L-shaped wall.

FIG. 3 shows a state in which the head base 21 is held in the recess 13 under pressure. Incidentally, a guide rail portion 22 is formed on the rotary substrate 10 in order to make the displacement of the pressing plate 16 smooth. As shown in FIG. 5, the head base 21 includes a front portion 24 to which a magnetic head 23 is attached;
It consists of a lead conductor 25 and a back portion 27 having an attachment hole 26, but the attachment hole 26, conductor 25, etc. are omitted in FIG. 3.

Similar to the wall portion 12 described above, the flat receiving portion 11 is composed of a single piece so that it is common to all mounting locations (three locations in the illustrated case), but the pressure plate 1
6 are provided individually. Pressing plate 16
The other end projects toward the adjacent mounting part, and this projecting portion 16'' is used as the shaft 3a, 3b, 3c of the displacement drive means 3, 4, 5 shown in FIG.
is pressed to displace the pressing plate 16 against the biasing force of the spring 19.

Next, FIG. 6 shows how the head base 21 is moved into the recess 13.
means 28 for supplying the
In the state shown in FIG. 1, the head base 21 is lowered from directly above the rotating jig main body 2 (perpendicular to the paper surface of FIG. , and then moves upward. The supply means 28 includes a cam 33 that is urged toward the center by a spring means 32 disposed in a large-diameter notch 31 of the cylinder 30, and a truncated conical control cam 34 fitted in the center of the cam 33. The control cam 34 is formed integrally with a guide body 36 that moves up and down while being guided by a hollow portion 35 that extends upward and is connected to the large diameter notch 31 . On the other hand, the cam 33 is provided with an air passage therein, and has a leg part 29 at its end that attracts the head base 21. The control cam 34 is normally in a downwardly moved position, so the three cams 33 are spaced apart from each other and their legs 29 are spread out, but the head base 21 is not connected to the rotating jig main body 2. When applying to the recess 13, the cylindrical body 3
0, the control cam 34 moves upward and enters the state shown in FIG. At this time, the legs 29 narrow together.
As a result, the rear end of the head base 21 is brought into contact with the other surface 15b of the L-shaped wall. Second
In the figure, arrow B indicates the direction of the force that the head base 21 receives due to the movement of the cams 33, 34 of the supply means 28, and arrow D indicates the direction of the force that the head base 21 receives from the press plate 16. In addition, when the head base 21 is separated from the leg portions 29, it receives a pressing force from air so as to be pressed against the flat pedestal 11.

(G) Effects of the Invention According to the present invention, the head base is held with elastic force against the jig body, so compared to the conventional screw-fastened structure, work efficiency is significantly improved and mounting accuracy is also improved. This has the effect of increasing reliability.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the head base mounting device of the present invention together with a magnetic head polishing device, FIG. 2 is a perspective view of the main parts thereof, FIG. 3 is a perspective view of the main parts with the head base attached, and FIG. FIG. 4 is a sectional view taken along the line X-X' in FIG. 2. FIG. 5 is a perspective view of the head base, and FIG. 6 is a sectional view of a main part of the head base supply means. 2... Jig main body, 3, 4, 5... Displacement driving means, 10... Rotating board, 11... Plane cradle, 1
2... Wall portion, 13... Recess, 16... Pressing plate,
17... Pin, 19... Spring, 21... Head base, 23... Magnetic head, 28... Supply means.

Claims (1)

[Scope of Claims] 1. A device for attaching a head base of a magnetic head to be polished to a jig body so that the head protrudes from the outer periphery of the jig body, which is arranged rotatably and has an L-shaped top surface. a jig body comprising a wall portion having a wall and a flat pedestal defining the bottom surface of a recess facing the wall; a means for temporarily displacing the pressing means against the biasing force of the spring means when attaching or removing the head base to the jig main body; and a supply means for supplying the head base from above so as to place the head base thereon. 2. The head base mounting device according to claim 1, further comprising a plurality of head base mounting recesses surrounded by the wall portion, a flat pedestal, and a pressing means. 3. The jig main body consists of a rotating substrate, the wall portion, and a flat pedestal, and the wall portion, the flat pedestal, and the pressing means are attached to the rotating substrate via pins planted in the rotating substrate. A head base mounting device according to claim 1, characterized in that: 4. The head base mounting device according to claim 3, wherein the supply means supplies the head base within the recess while urging it toward the center of the jig body.