JPS58160039A - Fixing method of work - Google Patents

Abstract

PURPOSE:To enable to eliminate fixing jigs by a structure wherein a plurality of a locking pins of a work cradle are fitted into a plurality of a holes of the work provided at predetermined intervals and at least one pin out of said locking pins is made displaceable in assembling processes or the like. CONSTITUTION:When the holes 3 and 4 of a work 1 are inserted in the locking pins 18 and 19 of the work cradle 17 of a fixing device 16 carried by a conveyer and, after that, a lever 32 is pushed in, a rod 24 is moved leftward through a radial ball bearing 26 against a plate spring 28 so as to part the locking pins 18 and 19 from each other, resulting in tightly engagedly fixing the work 1 to the cradle 17. When a rotary shaft 41 is pushed in through a knob 64 under the conditions just mentioned above, an angular positioning pin 80 is released from the pin hole 79 of a disc 78 by the rocking motion of a bellcrank 42 and then the rotation of the knob 64 is transmitted through helical gears 55 and 52 to a main shaft 20 in order to pivot the work cradle 17 to the optimum angle for adjustment. After that, the work cradle 17 is fixed at said angle by pulling back the knob 64. Consequently, the elimination and at the same time standardization of jigs and fixtures can be accomplished and yet the trend toward automatic assembling can be promoted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present BA relates to a method for fixing a workpiece in an assembly process or the like.

In this specification, a "work" refers to a workpiece that is to be subjected to processing such as assembly, 1) 1611, etc. in order to make a finished product.

Conventionally, in the assembly process, when it is necessary to fix the workpiece for assembly, adjustment, etc.,
Six jigs were manufactured for each product, and the workpiece was fixed by the jigs. If an i-product machine was changed over, it was necessary to carefully manufacture a jig to fix the workpiece, and a great deal of effort was spent on designing and manufacturing the jig. In fact, four-
Even for QR products with external dimensions, if the assembly and adjustment parts change, it is necessary to manufacture jigs according to the assembly and adjustment functions. In this way, conventionally, K
A PJflk type jig had to be manufactured to secure the workpiece. Therefore, it is clear that the number of jigs is increasing, and it is inevitable that jigs and tools will be scrapped due to product model changes. Therefore, it is difficult to standardize jigs and tools and machines related to various products, and this has delayed the promotion of automatic assembly.

The purpose of the present invention is to solve such technical problems, and to fix the workpiece according to each function of assembly and adjustment using a common fixing device for each product, and to fix the workpiece according to the function of assembly and adjustment. Figure 1 shows the longitudinal opening of an embodiment of the present invention, and the reason for M42 is the plan view of Figure 1. Figure 3 is a right side view of the 1st. As an example of a workpiece such as a 2Geo housing, the bottom surface 2 has bottle holes 3.4 at intervals of 1tl.
This work l is placed on the work holder 17 of the fixing device 16. The work holder 17 of the fixing device flf16 is provided with a lock bin 18.19 that fits into the pin hole 3.4. While the lock pins i8 and 19ffi are being fitted into the pin holes 3.4 and the lock pin 19 is being displaced to the left in FIG.
! ! 1 is added. Thereby, the work 1 can be assembled or prepared.

The fixing device [116] roughly consists of a work pedestal 17 for placing the work l, a lock bin 18, 19 provided on the work pedestal 17, and a work pedestal 17' ((rotatably supported). and a main shaft 2o.

The workpiece pedestal 17 is formed to extend long along the imaginary length of the axis of the main spindle 20, and the workpiece pedestal 17 is fixedly connected to one end of the workpiece holder 17 in the longitudinal direction. A guide #12 extending along the longitudinal direction is formed near one end m of the lower surface, and this guide #112 has a
The rod 24 is movable for 1'lk. guidance#! 12
The workpiece pedestal 17 has a long hole 15 extending slightly along the longitudinal direction corresponding to the other part on the side away from the main axis 20.
A lock bin 19 that is fitted into the elongated hole 15 is fixed to the end of the zero rod 24 in which the zero rod 24 is formed, and a workpiece pedestal 17 is located at a distance corresponding to the spacing l in the longitudinal direction from the lock bin 19. The two lock pins 18 and 19 provided with the lock bin 18 have locking portions 18a and 1 that protrude upward from the upper surface of the workpiece pedestal 17.
9a, these locking parts tsa, i9
a! They are formed in the shape of an inverted truncated cone with thin wedges extending in directions away from each other.

A radial ball bearing 26 is fixedly provided at one end of the rod 24 near the main shaft 20, and a leaf spring 28, which is placed on the workpiece pedestal 17, is in contact with the radial ball bearing 26. As a result, the rod 24 is urged toward one end of the tea cup 12, that is, toward the right in FIG.

Workpiece 51% #' on the lower opening near one end of 17
An i-shaped lever kite 30 is fixedly provided in the width direction perpendicular to the longitudinal direction of the MiJ mark, and between this lever guide 30 and the lower surface of the workpiece pedestal 17, there is a lever kite 30 in the width direction. The extending lever 32 is inserted so as to be movable in the width direction. A recess 33 facing the radial ball @ receiver 26 is formed near the center in the longitudinal direction of this lever 32, and this recess J-9T33 is formed at one end along the longitudinal direction of the lever 32, that is, the lower end in FIG. An inclined guide surface 33ak is provided which is inclined so as to move away from the lock bin 18 toward the top.

The radial ball @ receiver 26 is fitted into the recess 33. Note that the lever 32 is connected to the lever guide 3 at both ends of the lever 32.
0 and the lower surface of the workpiece holder 17 are provided with protrusions 34 and 35 for completely preventing the workpiece from being removed from the space between the workpiece holder 17 and the lower surface of the workpiece holder 17.

The main shaft 20 is supported by bearings 47 and 48 on support plates 43 and 44 that are erected on the base 81 at a distance. Fourth
Referring to FIG. 1, a helical gear 52 is added to the support plate 44 of the king 41120. Another helical gear 55 meshing with this helical gear 52 is located below the main shaft 20. Lord @20
It is fixedly provided on the rotary cylinder 54 that extends over the other side. (b) This rotating cylinder 54 is supported by the side plates 56 and 57 directly opposite to the two supports 43 and 44 through bearings 60 and 61.
(b) A rotating shaft 41 is loosely fitted into the rotating cylinder 54, and this rotating shaft 41 passes through the rotating cylinder 54. Moreover, rotating cylinder 5
4 is formed with a long hole 62 extending in the axial direction,
A pin 63 that is engaged with a long hole 62 of the rotating shaft 41KFi is provided in a protruding manner. Therefore, the rotating shaft 41 is movable in the axial direction of the rotating cylinder 54 along the elongated hole 62, and rotates @41.
When the rotary cylinder 54 is rotated, a knob 64 is fixed to one end of the rotary shaft 41 protruding from the 0-side plate 56 on which the rotary cylinder 54 is rotated.

@Plate 57Fi It is configured in a whL shape in the vertical plane,
A support neck 57a is formed on the upper part of the workpiece pedestal 17. A swinging shaft 67 is provided protruding from the writing surface 57&. Bell crank 42 is wI with arm 69°70 or horizontal
! The bell crank 42, which is integrally constructed in an L-shape, is swingably supported by a swing @67. One h69 is brought into contact with the other end of the rotation 411141.

Further, a locking hole 70a extending in the longitudinal direction of the arm 70 is formed at the free end of the other h70.

The support plates 43, 441ijJ are provided with guide shafts 71, 72 extending from a flat bamboo at both ends of the main @20. A movable member 75 is movably held in these guides m7i and 72 via pole bushes 73 and 74. Support plate 44
A spring 76 is provided around one guide shaft 71i in the movable member 75. The spring force of the t-spring 76 urges the moving member 75 in a direction away from the forks 44, that is, in a direction toward the support plate 43. A bottle 77 is protruded from the lower part of the moving member 750, and this bottle 77 is inserted into the locking hole 70 of the bell crank 42.
a[9tS is stopped.

In the main shaft 20, a disk 7 is located at the position of the support plate 43.
A plurality of pin holes 79 are formed in the circumferential direction of the disc 78 to which the pin 8 is fixed, and the movable member 75 has an angular positioning pin 80 protruding from the movable member 75 that can be inserted into the hole M9.

Such a fixing device 6 is mounted on a conveyor, for example, and the workpiece 1 is assembled or shaped while being conveyed by the conveyor.

Next, manual knitting in which the work l is fixed by the fixing device itt16 will be explained. First, the bin hole 3.4 of the work l is inserted into the lock bin 18.19 protruding from the work holder 17.
*Insert it and place it on the work holder 17. In this state, push the lever 32 in the direction of arrow 83 in FIG. Then, the lever 32 moves to the lowered position along the imaginary line 84, and the radial ball bearing 26 moves along the inclined inner surface 33a of the recess 33. Therefore, the rod 24 moves in the direction of arrow 85 against the resilient force of the plate spring 28, thereby moving the lock pin 19 in the direction away from the lock pin 18. This causes the locking portion 18a of the locking bin 18.19 to fit into the bin hole 3.4 of the work l.

The retaining awn 19a is firmly held, so that even if the workpiece pedestal 17 rotates, the workpiece l will not be lowered and is securely fixed to the workpiece pedestal 17.

With the workpiece l fixed on the workpiece notch 17 in this way, when the knob 64i%2 is pushed in the direction of the arrow 87 in FIG. It will be done. As a result, the other end of the rotating shaft 41 protrudes from the side plate 57 as indicated by an arrow 89, and rotates clockwise in FIG. 2 as a fulcrum for the bell crank 42's swing.

As a result, the movable member 75 is moved in a circular direction away from 78 as indicated by arrow 90 by the pin 77 inserted into the locking hole 70a of the bell crank 42, against the spring force of the lever 1276. . Therefore, the angle i11tm deciding bin 80
is removed from the bottle hole 79 of the H button 78. The main spindle 20 and the work platform 17 are brought into a rotating state by this movement.

By rotating the knob 64tl, the rotating shaft 41 and the rotating cylinder 54 are rotated wAfilJ, and the rotational driving force is transmitted to the main shaft 20 via the base 55.52. Therefore, the workpiece pedestal 17 is knitted by rotation. He rotated the workpiece pedestal 17 to the most convenient angular position for assembling or adjusting the workpiece l, and the knob 64yk arrow 87
By pulling back in the opposite direction, the bell crank 42 returns to its original state as the movable member 75 moves by the spring force of the springs 76. In this state, the angle positioning pin 80 of the moving member 75 is positioned at the pin hole 7 of the disc 78.
9, and the rotational movement of the main shaft 2o is prevented. Therefore, the workpiece 1 fixed to the workpiece pedestal 17 is fixed at a desired angular position.

In the above embodiment, two bottle holes 3.
4 is formed, however, a plurality of three or more bottle holes may be provided, and four P9'r may be formed in place of the bottle hole 3.4.

In the above-mentioned example, the workpiece 1ktI8Ll may be fixed using the lock bin 18, 19, and then, as another embodiment of the present invention, the workpiece l may be fixed using a locking member 91 as shown in the fifth example. . This lock member 91 is the lock bin 9
2, and a bJ example material 93 which is surrounded by the lock bin 92 and has one piece fixed to the workpiece pedestal 17. A tapered circular rigid portion 94 is formed at the end of the lock bin 920.

To fix the work l, as shown in FIG. 5(1), the locking member 91iC is inserted into the bottle hole 3 of the work l placed on the work holder 17. Next, Figure 5 (2)
As shown in , by pushing the lock bin 92 into the workpiece l, the cylindrical member 93 is pushed out within the workpiece l, thereby causing the workpiece l to be held firmly on the lock pedestal 17.
i! ! It will be built.

As described above, according to the present invention, lli! Regardless of the external shape of the workpiece to be completed and the thickness of the workpiece casing, all the workpieces can be fixed at predetermined positions on the workpiece holder depending on the assembly and adjustment functions. Therefore, the labor involved in preparing and assembling jigs and tools is reduced, and the jigs and tools can be made thinner, making it possible to promote the movement of assembly of products.

[Brief explanation of the drawing]

FIG. 1 shows a work l of one embodiment of the present invention with one foot [16'
Vertical @I'r view shown in i, Figure 2 is a thousand figure of it diagram, Figure 3
FIG. 4 is a perspective view of the vicinity of the side plate 57 shown in FIGS. 1 and 2, and FIG. 5 shows the locking member 91 of another embodiment of the present invention. #(8) Diagram shown. l...Work, 3.4...Bin hole, 16...Fixing device, 17...Work holder, 18, 19.92...
Lock bin, 20... Main shaft, 24... Rod, 26
... Radial ball bearing, 28 ... Leaf spring, 30 ...
Lever guide, 32... Lever, 33... Recess, 4
1... Rotating shaft, 42... Bell crank, 43.44
...Support, 52.55...Helical gear, 56.5
7...-Plate, 64... Knob, 67... Swing axis, 7
0a... Locking hole, 75... Moving member, 76... Spring, 78... Disk, 79... Bottle hole, 80... Angular position Tit next bottle, 91... Lock member, 93...
・Machi-san introvert Goki, l... Interval agent Patent attorney Kei Nishikazu Part 5 (1) (2) 1

Claims (1)

[Claims] A plurality of holes or recesses are formed at predetermined intervals in the workpiece to be fixed, and the workpiece pedestal on which the workpiece is to be placed and fixed has a plurality of holes that can fit into the holes or recesses. A method for fixing a workpiece, characterized in that at least one of the lock bins is made movable so as to be locked in the hole or recess Qr.