JPS6311286A - Positioning jig for member to be attached - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is useful for assembling, for example, an assembly consisting of a shaft supporting a floppy disk and a cup fitted to this shaft by adhesion. The present invention relates to a positioning jig for positioning the adhered member.

(Prior Art) A disk drive mechanism that supports and rotates a floppy disk is generally constructed as shown in FIG. That is, 1 is a shaft, and a cup 2 as a fitting member is fitted onto this shaft 1. A magnet 3 is fixed to the upper surface of this cup 2, and a floppy disk 4 is attached to the upper surface of this cup 2.
It is configured to be supported in a fitted state. Therefore, in order to rotate the floppy disk 4 with high precision, it is generally necessary to suppress the displacement of the cup 2 to about 5 μm. Therefore, in the past, a liquid smoke method has been adopted as a means of fitting the cup 2 to the axis of the shaft 1. By polishing, the surface sagging of the cup 2 is made to meet the above-mentioned standards.

(Problems to be Solved by the Invention) When fitted by the liquid smoke method as described above, post-processes such as polishing are required, care must be taken in handling the assembly between processes, and automatic assembly is difficult. There is a situation.

This invention has been made in view of the above-mentioned circumstances, and its object is to be able to position and adhere a shaft and a cup with high precision when assembling the shaft and the cup by adhering them to a member to be adhered. The purpose of this invention is to provide a positioning jig.

[Structure of the invention]

(Means and effects for solving the problem) This invention has the following features:
A block with a groove that positions the shaft vertically is provided with a presser pin that is movable forward and backward with respect to the groove and presses the shaft in a direction perpendicular to its axis, and a presser pin that presses the presser pin in two levels of strength and weakness. and a push-up pin that pushes the shaft upward along the axis,
Further, a presser bush and a presser block for pushing up the cup are provided on the upper surface of the block (1), and the cup is positioned at right angles to the axis of the shaft using the upper surface of the V block and the lower surface of the presser block as reference planes. It's because it's configured.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

1 to 8, 11 is a jig plate that can slide on a rail surface (not shown), and this has a V-shaped notch 12 on one side of the rectangular plate. By pressing the bearing 13 against the notch 12, the jig plate 11 can be positioned at a predetermined position. A lower block 14 is provided on the upper part of this jig plate 11, and a V block 15 and a holder block 16 are mounted on the upper surface of this lower block 14. The ■block 15 has a groove 1 on one side thereof.
7 is provided. This groove 17 is finished by polishing to a perpendicularity of 5 μm or less, and supports the shaft 1 as a member to be adhered as shown in FIG. 9 in a vertical state. Further, a guide hole 18 is provided in the holder block 16 so as to face the V-groove 17, and a slide block 19 is provided in the guide hole 18 so as to be able to move forward and backward with respect to the V-groove 17. Further, a pin guide 20 is bored in the slide block 19, and a presser pin 22 urged in the forward direction by a compression spring 21 is inserted into the pin guide 20. A bracket 23 is attached to the rear end of the slide block 19, and a tension spring is installed between the bracket 23 and a support 24 provided upright on the jig plate 11 for urging the slide block 19 in the backward direction. 25 is installed. Also,
A roller 26 is pivotally supported on the bracket 23,
This roller 26 is in motion with a press 127. This pressing mechanism 27 includes a support stand 28 provided on the upper part of the jig plate 11, a rod 29 that is pivotally supported by the support stand 28 and can move forward and backward in a direction perpendicular to the slide block 19, and a rod 29 for moving the rod 29 forward and backward. The said jig plate 1
1 and a cylinder 30 supported by a separate member. A large diameter portion 2 is provided in the middle of this rod 29.
9a and a small diameter portion 29k), and when the large diameter portion 29a of the rod 29 comes into contact with the roller 26, the slide block 19 moves forward, and the small diameter portion 29b contacts the roller 26.
When the slide block 19 comes into contact with the slide block 19, the slide block 19 moves backward. In other words, the stroke of the slide block 19 can be varied by moving the rod 29 forward and backward, and the force with which the shaft 1 is pressed by the presser pin 22 can be switched between two levels of strength and weakness.

Further, a pin guide 31 is vertically bored in the lower block 14 facing the groove 17 of the V block 15, and a push-up pin 33 biased upward by a compression spring 32 is provided in the pin guide 31. is inserted. The shaft 1 contacts the lower end of the shaft 1 in the V groove 17 of the V block 15 and urges it upward.

The upper surface of the block 15 is formed on a first reference surface 34 perpendicular to the extending direction of the V-groove 17.
A reference surface 34 and a bush holder 35 are fixed to the V block 15 with two screws 36. This bushing holder 35 is provided with a presser bushing 38 having a through hole 37 into which the shaft 1 fits, and the presser bushing 38 is urged upward by a compression spring 39. Roughly speaking, there is a presser bushing 38 on the top of the block 15.
A press block 40 is provided to surround the bush holder 35. This presser block 40 has a second reference surface 41 on its inner surface that faces the presser bush 38 and positions the cup 2 as the mating member. A recess 42 into which the shaft 1 protruding upward is inserted is provided.

The presser block 40 configured in this way is attached to the rotating arm 4.
3 is supported by pins 44, 44 so as to be movable up and down, and a compression spring 45 is interposed between the presser block 40 and the rotating arm 43. An intermediate portion of the rotary arm 43 is supported to be rotatable and movable up and down relative to a main shaft 46 erected on the jig plate 11, and a guide roller 47 is provided at the distal end of the rotary arm 43. There is. And this guide roller 47
is provided on the outside of the main shaft 46 and is engaged with an ID cam 48, and by this guide cam 48 the rotary arm 43 moves up and down while rotating, and when rising, it moves as shown by the two-dot chain line in FIG. (2) It is retracted by 90 degrees from the block 15, and (2) the shaft 1 and cup 2 can be easily supplied to the block 15. Note that 49 is a lock lever that is held when the rotating arm 43 is lowered and the cup block 40 is located at the block 15.

Next, the function of positioning the shaft 1 and the cup 2 when bonding them together using the positioning jig configured as described above will be explained.

During the rising process of the rotating arm 43, the presser bushing 38
When the shaft 1 is inserted from above, the shaft 1 descends along the V-groove 17 of the block 15, and its lower end abuts against the push-up pin 33 and is supported. Next, press mechanism 2
When the cylinder 30 of No. 7 operates and the rod 29 moves forward by a predetermined stroke, its small diameter portion 29b comes into contact with the roller 26, and the slide block 19 moves forward. Therefore, the presser pin 22 pivotally supported by the slide block 19 moves forward, and its tip presses the shaft 1 against the groove 17 with a weak force. With this, shaft 1 becomes ■ Block 1
5 in a vertical position.

Next, the shaft 1 protruding from the presser bush 38
Fit the cup 2 to the upper end of the. Next, shaft 1
The adhesive is applied to the fitting portion of both the cup 2 and the cup 2 by a separate adhesive application mechanism (not shown). After application, the shaft 1 is fixed so that the adhesive is evenly distributed over the fitting portion. , it is necessary to rotate only cup 2. Therefore, a rotation imparting mechanism (not shown) such as a rolling contact roller is brought into contact with the cup 2 to rotate it, but the shaft 1 is pressed against the V-groove 17 by the presser pin 22 and therefore does not rotate. In this way, shaft 1 and cup 2
After setting, when the rotating arm 43 descends while rotating, the presser block 40 comes into contact with the upper surface of the block 15, that is, the first reference surface 34. Therefore, the cup 2 is pressed by the second reference surface 41 provided on the lower surface of the presser block 40. In other words, cup 2 is the first
The upper end of the shaft 1 is held between the presser bush 38 provided on the reference surface of the presser block 40 and the second reference surface 41, and at this time, the upper end of the shaft 1 comes into contact with the bottom surface of the recess 42 of the presser block 40 and is pushed down. In this case, since the shaft 1 is pressed with a weak force by the presser pin 22, the shaft 1
When a downward pushing force is applied, it slides down the V-groove 17 and descends.

In this way, the cup 2 is fitted onto the shaft 1, and the cup 2 is positioned at right angles to the axis of the shaft 1, and the amount of protrusion of the shaft 1 relative to the cup 2 is also set.

Next, the cylinder 30 of the pressing mechanism 27 is further advanced to cause the large diameter portion 29a of the rod 29 to face the roller 26, and the slide rod 19 is further advanced. As a result, the holding pin 22 provided on the slide rod 19 holds down the shaft 1 from the lateral direction with a strong force. Therefore, the cup 2 is positioned at a predetermined position with respect to the shaft 1, and the adhesive is uniformly applied to the fitting portion thereof. In this state, the jig plate 11 is moved to the next adhesive drying step to dry the adhesive. After the adhesive has solidified, the rotating arm 43 rotates to release the presser block 40.
The assembly can be easily taken out because the assembly is avoided while rising.

In the above embodiment, the positioning in the case of gluing the assembly of the disk drive mechanism of a floppy disk was explained, but the present invention can also be applied to the positioning of various parts.

〔Effect of the invention〕

As explained above, according to the present invention, when bonding a shaft and a fitting member that fits onto the shaft, the shaft is pressed against the V groove of the V block, and the fitting member is attached to the shaft. Since positioning is performed using the presser block, it is possible to position the adhered member with high precision, and the assembly can be automated.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention,
Fig. 1 is a longitudinal sectional front view showing the internal structure of the positioning jig, Fig. 2 is a side view of Fig. 1, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 4 is a 5 is a front view of the entire device, FIG. 6 is a side view taken from the direction of the arrow in FIG. 5, FIG. 7 is a side view taken from the direction of arrow B in FIG. 8 is a plan view of FIG. 5, and FIG. 9 is a sectional view showing a part of a general disk drive mechanism. 1...Shaft, 2...Cup, 15...V block, 17...■Groove, 22...Press pin, 27...
- Pressing mechanism, 33... Push-up pin, 40... Presser block, 34.41... Reference surface. Applicant's agent Patent attorney Takehiko Suzue w & Figure 6

Claims (1)

[Claims] A positioning jig for a member to be bonded, which positions the fitting portion of the member to be bonded, which is composed of a shaft and a fitting member fitted to the shaft, when bonding the fitting portion with an adhesive, wherein the shaft is held vertically. A V block having a V groove for positioning and a first reference surface on the upper surface;
The shaft is provided so as to be movable forward and backward with respect to the V groove of the block, and the shaft is pressed in a direction perpendicular to the axis of the block.
a presser pin that presses against the groove; a pressing mechanism that presses the presser pin in two strong and weak steps; a pusher pin that presses the shaft upward along the axis; a presser bush that pushes up the mating member;
A presser block is provided that is movable up and down with respect to the first reference surface of the V block and has a second reference surface on the inner surface for positioning the fitting member between the presser bush and the presser bush. Positioning jig for parts to be bonded.