JPS6322233A - Engine assembly jig - Google Patents

Abstract

PURPOSE:To make it possible to set several kinds of workpieces, by providing a displacement mechanism for the relative distance between pins adapted to be engaged in rear section suspension holes and pins adapted to be engaged relatively in front section suspension holes, and a turning mechanism for an attached engine casing. CONSTITUTION:A reference surface S for a casing R is formed on the pin 101 side of the rear section to set a reference position of the pin 101. Then, by the distance from the reference surface S to the front side surface in the direction Y, by which a pin 102 is engaged, that is, to the position of the dimension A, an assembly 107 is moved in the direction Y to set a position of the pin 102. Then an assembly 106 is moved and adjusted in the direction X to set the distance between the pins 101, 102, that is, the dimension D. Thus, after a workpiece is set on the pins 101, 102, pins 103, 104 are moved in the directions toward the pins 101, 102, respectively, to clamps the pins up to the dimensions B, C to complete the setting of the workpiece onto the jig.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to an engine assembly jig that can be used commonly for assembling many types of engines.

b. Conventional technology Motorcycles are generally produced in small quantities with a wide variety of models, and engines are also produced with a variety of specifications. As a result, the number of specialized assembly jigs for each engine specification is enormous, which not only increases jig costs but also increases the amount of jig replacement and setup work, which inevitably reduces production efficiency.

In order to improve this, we installed a specially designed jig on the engine assembly conveyor to assemble various engine models on one conveyor line.
JP-A No. 56-525) is known.

In addition, for manual line for sharing? fj tool is used.

Problems to be Solved by the C0 Invention As mentioned above, using dedicated assembly jigs for each engine specification requires a huge number of jigs, incurs equipment costs and management costs, and reduces production efficiency. There is a problem that it is bad.

In addition, in the engine assembly jig according to the above-mentioned Japanese Patent Application Laid-Open No. 56-525, the engine is placed in a horizontal position, half assembled, the workpiece is lifted up, the workpiece is turned upside down, and the jig is reinstalled. In order to assemble the remaining half, a tedious reversing process is required, the jig must be adjusted when reversing, and only two top surfaces, which are most advantageous as work surfaces, can be removed during automatic assembly. There is a problem.

In addition, manual line jigs can be easily used in both left and right split case models, but due to positioning accuracy, they cannot be used as automatic assembly jigs and are time-consuming.

The present invention has been made in view of the above-mentioned circumstances, and aims to solve the problems of the prior art, and in particular, to achieve wide common use of engine assembly jigs for motorcycles, and to enable a multi-model, low-volume production system on an automatic assembly line. The purpose of this invention is to provide an engine assembly jig.

d. Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an assembly jig for left and right engine cases, in which the pins that engage with the rear suspension holes of the left and right engine cases, respectively, are Pins that engage with the front suspension holes are provided, and a mechanism for displacing the relative distances of these pins and a turning mechanism for the attached engine case are provided.

Hereinafter, the present invention will be explained in detail with reference to the drawings. Figures 1 and 2 explain the basic concept of the assembly jig according to the present invention, and RlL conceptually shows the right side case and left side case of the two-part engine, which are the workpieces; 101 is suspension hole 1 on the rear side of the right case R
11 , 102 is a pin that similarly engages with the suspension hole 112 on the front side of the right case R, 103 is a pin that engages with the suspension hole 113 on the rear side of the left case L, 1 .
04 is also the suspension hole 11 on the front side of the left case L.
4, these pins 101, 102 .
103 and 104 are hangers 101a and 10, respectively.
2a, 103a, and 104a.

The pin 101 and the pin 103 are held on the same assembly 106 so that they can move together in the X direction in the figure, and the pin 103 is configured to be able to move in the Y direction.

Further, the pin 102 and the pin 104 are similarly held on the same assembly 107, and are configured so that they can both be displaced in the Y direction.

The work is cented in the following manner. First, rear bin 1
A reference surface S of the case R is provided on the 01 side, and a reference position of the pin 101 is set. Next, the assembly 107 is moved in the Y direction to the distance in the Y direction from this reference surface S to the front side surface, that is, the surface with which the pin 102 engages, that is, the position of the dimension A, and the position of the pin 102 is centered.

Next, by moving and adjusting the assembly 106 in the X direction, the distance between the pins 101 and 102, that is, the dimension, is adjusted. In this way, the workpiece is attached to the pin 101.
After setting pin 102 to pin 103, set pin 103 to pin 10.
1 direction (that is, the Y direction), similarly connect pin 104 to pin 1
02 direction and tighten them to dimensions B1 and C, respectively, to complete setting the workpiece to the jig.

In this state, assemble the necessary parts.

If reversal, that is, displacement of the work surface is required during assembly work, the workpiece is rotated to an appropriate angle by a turning device (described later) formed by integrally connecting the assembly 106 and the assembly 107. , just move the workpiece to the position where it is easiest to work.

Next, a description will be given of an example in which the basic concept of the present invention is specifically implemented.

In Figures 3 to 7, la and lb are opposing housings, 2 is a base to which housings la and lb are fixed,
3a and 3b are brackets provided in contact with the housings la and lb, respectively;
3b is the bearing part 4a, 4b of the housing la, lb
It is rotatably supported by inserting the shaft into the.

5 is a U-shaped joint plate that connects the brackets 3a and 3b together, and 6 is a slide portion interposed between one end of the joint plate 5 and the bracket 3a. As is clear from FIG. 6, the slide section 6 consists of a slide holder 7, a slider 8, and a slide presser 9.
The slider 8 has a handle 11 extending downward, and is configured to be able to slide between the slide holder 7 and the slide presser 9 by operating the handle 11.

21 is a holder arranged above the slide part 6;
It abuts on the upper part of the slider 8 and is fixed integrally with the slider 8 with a screw 22. 23 is a spline shaft; 24 is a spline shaft 23 as shown in FIG.
The end of the screw 24 is screwed into and held by the holder 21, and at the same time, the spline fitting structure is used to allow the spline shaft 23 to move horizontally only in the axial direction. Holder 2
1.

31 is a pin for suspending the work, which is connected to the holder 2;
The hanger 31a is fixed to the end of the hanger 31a. 33 is the same (another pin for suspending the workpiece, the hanger 3 fixed to the end of the spline shaft 23).
3a and is provided protrudingly opposite to the pin 31.

On the other hand, on the front side, the structure is almost the same, 41 is on the housing lb side, and bracket 3b
Other holders provided nearby include a spline shaft 43 and a screw 44 that passes through the spline shaft 43 in the axial direction and holds it, and the end of the screw 44 is screwed into the end of the holder 41 to hold it. has been done. 52
．． Reference numeral 54 denotes pins 52a provided oppositely to each other for suspending the workpieces.

54a is a hanger for holding these pins;
52a is fixed to the end of the holder 41, and the hanger 54
a is fixed to the end of the spline shaft 43. The spline shaft 43 is engaged with the holder 41 so as to be horizontally movable only in the axial direction.

75 is a slide plate provided on the side of the joint plate 5; 76 is a pair of NANDO holders protruding from the holder 41 and interposed between the slide plates 75; 77 is a NANDO holder provided between the NANDO holders 76; 78 is a feed screw.

The feed screw 78 passes through the slide plate 75, the nand holder 76, and the slide nut 77, and is screwed into the slide plate 75 and the slide nut 77. The slide plate 75 and the holder 41 are slidably engaged with each other, and by rotating the feed screw 78 with a napft 79 fixed to the end of the feed screw 78, the slide napft 77 is moved. The holder 41 is configured to slide on the slide plate 75 via the NAND holder 76.

Reference numeral 60 denotes a half-moon-shaped positioning plate, which has a plurality of fitting holes 61 fixedly provided at appropriate intervals on its periphery, and is integrally fixed to the mounting portion of the half-moon-shaped bracket 3a. 65
66 is a center pin whose tip is held in and released from the fitting hole 61 of the positioning plate 60, and 66 is a housing 1.
The center pin 65 is slidably held by a bushing fixed to a. A shift lever 67 has one end engaged with a center pin 65, and the shift lever 6 is supported by a shaft 68 rotatably held in the housing 1a.
7 is rotatably held, and the other end is held by a compression spring 6.
9, and the center pin 65 is always pressed into the fitting hole 61 of the positioning plate 60 by the restoring force of the compression spring 67. Reference numerals 70 and 71 indicate levers fixed to both ends of the shaft 68;
The lever 71 is for automatic operation (control), and the lever 71 is for manual operation.

Reference numeral 80 is an indexing gear integrally provided on the side of the bracket 3a, and is driven by another control drive gear (not shown) to rotate the bracket 3a.

A reversing handle 85 is fixed to a part of the joint plate 5 and is used when the assembled engine case is rotated together with the joint plate 5.

e. Operation Next, a method of using the engine assembly jig according to the present invention will be explained.

First of all, before starting the work, the dimensions of the model to be assembled are A2.
In Case R, whose dimensions are known, set a reference line using the pin 31 that engages with the suspension hole on the rear side as a reference. Next, the distance in the Y direction from this pin 31 to the suspension hole on the front side, that is, the dimension A, is set. To this end, in the slide plate 75 that engages with the holder 41 provided on the bracket 3b side, the napft 79 is rotated to move the entire holder 41 in the Y direction to set the dimension A (see FIG. 7).

Next, the holder 21 holding the bottles 31 and 33 is moved in the slide section 6 by the handle 11, and the bottles 3
1 and the bin 52, that is, the dimensions are set.

In the above condition, place case R and case L, tighten screws 24 and 44, move and fix the bins 33 and 54 to the predetermined 8 dimensions and C dimension. The assembly is placed in the jig.

It should be noted that the structure is such that the bins 33 and 54 can be moved within the range of 8 dimensions and F dimension in the figure, so that it can be applied to many types of workpieces with different dimensions, and there is no problem with all the models employed.

Next, to switch the work surface for the workpiece, pull the lever 71 in the direction of the arrow (see Fig. 3) and move the positioning plate 60
After removing the center pin 65 fitted into the gear 80, the gear 80 is rotated by a predetermined angle by a driving means (not shown). Therefore, the bracket 3a rotates, and at the same time the bracket 3 which is integrated with the joint plate 5
b also rotates, and the workpiece held by the jig rotates by a predetermined angle. When the lever 71 is released at a predetermined position, the center pin 65 is fitted into another fitting hole 61 on the positioning plate 60 by the restoring force of the compression spring 69, and the position is fixed.

The support devices 98 and 99 for the pair of bins shown by chain lines in FIGS. 3 and 4 can be provided as needed for special irregularly shaped engine cases, and are almost the same as the support structures for each of the bins described above. It is configured as follows.

The jig according to the present invention can be automatically assembled in the following manner using a separately provided automatic setup device. For example, for the A dimension of the pre-registered model, the holder 41
For example, point G (see Fig. 3) on the side surface of the feed screw 78 is measured, and the required number of revolutions of the nut 79 fixed to the head of the feed screw 78 is set by automatic operation, and the holder 41 is placed in a predetermined position. move it.

Further, the lever 11 is automatically operated and moved to a predetermined position for nine dimensions of the model. After the workpiece is placed in the jig, the screws 24 and 44 are automatically rotated to a preset position and tightened to a specified torque.

Further, the lever 70 is automatically operated to remove the center pin 65, while the gear 80 is driven and controlled to remove the positioning plate 65.
0 to the specified position, and then tighten the center pin 65 again)
The work surface of the workpiece can be automatically switched by

According to the engine assembly jig according to the present invention, as described above, the effects of the invention are as follows.
By specifying the hole to be used among the suspension holes in the left-right split engine case and setting the dimensions such as the dimension and D dimension for that model, various types of workpieces can be handled not only manually but also with a separately installed automatic setup device. cents automatically.

In addition, the workpiece can be automatically rotated to ensure the most advantageous working position of the workpiece, that is, on multiple sides, and the efficiency of assembly work can be improved.

Therefore, according to the engine assembly jig according to the present invention, it is possible to automatically assemble engines on the same conveyor in a high-mix, low-volume production format.

[Brief explanation of drawings]

1 and 2 explain the basic concept of the engine assembly jig according to the present invention, and FIG. 1 is an explanatory plan view;
FIG. 2 is an explanatory side view thereof, FIGS. 3 to 7 show an embodiment of the engine assembly jig according to the present invention, FIG. 3 is an explanatory side view thereof, and FIG. 4 is an explanatory plan view thereof. 5 is an explanatory view of the left side of FIG. 3, FIG. 6 is an explanatory view of the HH line in FIG. 3, and FIG.
The figure is a view taken in the direction of the arrows in FIG. 3. 31・33・52・54・101 ・102 ・1
03 ・104...Bin patent applicant Suzuki Motor Co., Ltd. (2 idiots) Figure 1 Figure 2 Figure 7

Claims (1)

[Claims] In the left and right split engine case, a pin that engages with the rear suspension holes of the left and right engine cases, respectively,
Similarly, an engine assembly jig is provided with pins that engage with each other in the front suspension hole, and a mechanism for displacing the relative distance of each of these pins, and a turning mechanism for the attached engine case. .