JPH1015692A - Jig device for positioning work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig device for positioning, with high universal applicability, which copes quickly with the addition of the new kind of a vehicle without the modification of the jig device like a conventional one in the jig device for positioning plural cross members on the floor surface of a load-carrying platform, for instance, in the assembling line of the load-carrying platforms of a truck. SOLUTION: Positioning blocks 2 to 2 for positioning the work W are movably installed along rails 5, 5, and the positioning blocks 2 to 2 are moved by using the downtimes of welding robots which are arranged side by side. After moving them to prescribed positions, they are attracted to magnets 3 to 3 to hold their positions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for assembling a floor portion of a truck bed, for example, for positioning cross members (workpieces) for supporting the floor portion at intervals suitable for the type of vehicle. The present invention relates to a jig device.

[0002]

2. Description of the Related Art Generally, in the process of assembling a deck,
It is necessary to position a plurality of cross members for supporting the floor plate of the deck in a receiving shape from below in parallel at predetermined intervals in front and rear, and therefore, conventionally, the plurality of cross members are positioned. Jig device is used.

A conventional positioning jig device uses a receiving piece having a plurality of positioning recesses provided at predetermined intervals. The receiving pieces are arranged at both ends of a cross member, and the recesses at predetermined positions are provided. The cross members are fitted in the end portions of the cross members, and each cross member is set in a bridging manner between both receiving pieces, and a predetermined number of cross members are positioned at a predetermined interval from each other.

[0004]

However, according to such a conventional positioning jig device, when it becomes necessary to newly set the interval between the cross members due to the addition of the vehicle type, each of the receiving members is required. Since the position of the positioning recess was fixed, the entire jig device had to be remodeled. As a result, there was a problem that not only did the equipment cost increase, but it was not possible to quickly respond to the addition of a vehicle type.

Further, in the conventional positioning jig device, since a large number of positioning recesses are provided in the receiving piece in accordance with the type of vehicle, which positioning recess should be used when the vehicle type is changed. In this respect, there has been a problem that erroneous setting of the cross member is likely to occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and can respond quickly and inexpensively to the addition of a new vehicle model. An object of the present invention is to provide a positioning jig device.

[0007]

Therefore, in the positioning jig device according to the present invention, a positioning block for positioning a work is provided movably along a rail, and the positioning block is moved along the rail. The work is positioned by being stopped and held at a predetermined position by position holding means arranged at a plurality of positions.

According to this positioning jig device, only the necessary position holding means among the position holding means previously arranged at a plurality of predetermined positions are made to function, and the positioning block is moved to the position of the functioning position holding means. Let me
By stopping and holding the positioning block at a predetermined position by the position holding means, the position of the positioning block can be easily changed, so that a change in the work positioning position can be performed quickly without any equipment modification. Can be handled.

Further, since the positioning position of the work is changed by moving the positioning block, it is not necessary for the operator to determine which positioning block is effective as in the prior art. The set runs out.

According to a second aspect of the present invention, there is provided a positioning jig device according to the first aspect, wherein a magnet which generates an attraction force when energized is used as the position holding means.

According to this positioning jig device, the position of the positioning block can be easily held or released by energizing or interrupting the energization of the magnet. The same operation and effect as the operation and effect according to the configuration described in 1 can be obtained.

According to a third aspect of the present invention, there is provided a positioning jig apparatus according to the first aspect, wherein the positioning block is moved by using a robot for performing a process on a workpiece. It is characterized by the following.

According to this positioning jig device, the positioning block is moved by a robot installed for performing various processes such as drilling, fusing, welding, and painting on the work. The pause time can be effectively utilized without performing the above processing, and the positioning block can be moved with high accuracy.

The movement of the robot for moving the positioning block can be handled by teaching or the like.
Compared to the case where a dedicated drive source for moving the positioning block is provided, a highly versatile positioning jig device with a simpler configuration and lower cost can be realized.

According to a fourth aspect of the present invention, there is provided a positioning jig device in which the positioning jig devices according to the first aspect are arranged in pairs on the left and right sides of a work, and a plurality of positioning blocks are arranged for each of the left and right positioning jig devices. And a greater number of position holding means than the positioning blocks.

According to this positioning jig device, for example, a long work such as a plurality of cross members is set in a bridging manner between left and right positioning blocks, and the plurality of cross members are positioned at a predetermined interval from each other. In this case, only the position holding means at the position to be positioned is operated, and the positioning block is stopped and held at each position, thereby positioning a plurality of cross members at various intervals without remodeling the device as in the related art. This makes it possible to increase the versatility of this type of positioning jig device, and thus to quickly and inexpensively respond to changes in the type of vehicle and addition of new types of vehicles. Erroneous setting of the work by the operator can be prevented.

[0017]

Next, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, in the process of temporarily attaching a total of 12 cross members W to W to the lower surface of the floor portion (not shown) of the truck bed assembling line, these 12 cross members W
A description will be given of an example of the positioning jig device 1 used for positioning the .about.W parallel to each other at a predetermined interval in the front-back direction of the carrier. The positioning jig devices 1, 1 are arranged in pairs on the left and right sides in the same tacking step,
Shows only one side.

The positioning jig apparatus 1 includes a total of 12 positioning blocks 2 to 2 mounted on the frame 4 and a total of 25 magnets 3 to 3. The frame 4 is installed on the floor F with its longitudinal direction along the front-rear direction (the left-right direction in the drawing) of the loading floor portion.

On the outer surface of the frame 4, two slide rails 5, 5 are arranged in parallel over substantially the entire length thereof in the longitudinal direction. 2 is movably supported along the longitudinal direction of the frame 4. Each of the positioning blocks 2 to 2 has substantially the same configuration.

Each of the positioning blocks 2 and 2 has a slide base 2a movably supported along slide rails 5 and 5, and a support bar 2d on the upper end of the slide base 2a.
Positioning pin 2b protruding upward through
And a positioning bush 2c provided at the lower end of the slide base 2a. The positioning bush 2c
It is mounted with its axis perpendicular to the sliding direction.

On the other hand, the 24 magnets 3 to 3 are columnar electromagnets that exert a magnetic force when energized, and are mounted at predetermined intervals in the longitudinal direction of the frame 4. The mounting positions of the magnets 3 to 3 are set corresponding to all the positioning positions of the cross member W for a plurality of vehicle types, and in the case of the present embodiment, are set corresponding to a total of 24 positioning positions. . Therefore, when positioning the 12 cross members W to W for a certain vehicle type, only the required number of magnets 3 to 3 (maximum 12) corresponding to the positioning position suitable for the vehicle type are used, The other magnets 3 to 3 are not used.

Each of the magnets 3 to 3 has a support shaft 3a provided on the head thereof inserted into an insertion hole 4a provided in the frame 4, and is supported movably in the axial direction. It is urged in the retraction direction (to the left in FIG. 2).

When each magnet 3 is pulled in by the compression spring 8, a certain gap is formed between its attraction surface (right end surface in FIG. 2) 3b and the slide base 2a. 8 in the protruding direction (rightward in FIG. 2) against the slide base 2.
a is attracted to the back surface (the left side surface in FIG. 2), whereby the positioning block 2 is attracted to the magnet 3. This adsorption state is shown in FIG.

When the slide base 2a is attracted to the magnet 3 by energization, the slide base 2a is immovably held by the attraction force of the magnet 3, thereby holding the positioning pin 2b at a predetermined position. A positioning hole is formed on the lower surface of both ends of the cross member W as a work, and the positioning pin 2b,
By inserting 2b, the cross member W is positioned and held between the left and right positioning blocks 2 and 2 in a bridging manner.

The positioning blocks 2 to 2 are moved by using a welding robot (not shown) in a state where all magnets 3 to 3 are not energized. This welding robot is used to fix the positioned cross members W to W to the lower surface of the bed floor by spot welding, and there is no particular change in this point. The movement of each of the positioning blocks 2 to 2 is performed by using the idle time during which the welding operation of the welding robot is not performed.

For this purpose, a moving pin 6 is provided at the tip of the arm of the welding robot in a protruding manner.
Is inserted into the positioning bush 2c of the positioning block 2, and the welding robot is operated based on a program stored in advance by teaching or the like in the inserted state, whereby each of the positioning blocks 2 to 2 is moved to a predetermined position one by one. Is done. As described above, the operation program of the welding robot has a great feature in that a program for moving each of the positioning blocks 2 to 2 to a predetermined position is added to the program for performing the welding operation. doing.

If it is necessary to change the position of the cross member W due to a change or addition of a vehicle type, the welding robot operates to change the moving pin 6 during the idle time of the welding robot. It is inserted into the necessary positioning bush 2c of the positioning block 2, and then the magnet 3 at that position is shut off. When the energization is interrupted, the magnet 3 moves in the retracting direction by the compression spring 5, whereby a certain gap is formed between the magnet 3 and the slide base 2a, and the positioning block 2 becomes movable.

After releasing the position of the positioning block 2 in this manner, the positioning block 2 is moved to a predetermined position by operating the welding robot with the moving pin 6 inserted into the positioning bush 2c.

When the positioning block 2 is moved to a predetermined position, the magnet 3 at that position is energized, whereby the positioning block 2 is immovably held at a different position from the above. After the position is held, the moving pin 6 is pulled out of the positioning bush 5 by the operation of the welding robot, and
The movement of the positioning blocks 2 is completed. Hereinafter, by repeating this operation, the positioning blocks 2 to 2 at the required positions are moved. Further, the positioning blocks 2 and 2 are moved and held at symmetrical positions by the same procedure for the positioning jig device 1 on the opposite side of the process, whereby the preparation of the left and right positioning jig devices 1 and 1 is completed.

As shown in the figure, a connecting plate 7 is attached in a bridging manner between the positioning blocks 2 and 2 at appropriate locations, thereby fixing the two positioning blocks 2 and 2 at a constant interval. ing. Further, the connection plate 7 is attached to one positioning block 2 and is configured to abut on or separate from another positioning block 2 depending on a required interval.

According to the positioning jig devices 1 and 1 of the present embodiment configured as described above, the positioning blocks 2 and 2 can be moved, and the magnets 3 and 3 are larger than the number of the positioning blocks 2 and 2. Even if it is necessary to change the interval between the cross members W to W due to the addition of a new vehicle type, it is easy to change the operation program only by teaching the welding robot, etc. Therefore, the versatility of the positioning jig device 1 can be remarkably improved.

Further, since the positioning blocks 2 to 2 are moved by the operation of the welding robot, the wrong setting of the cross member W due to a mistake in the receiving piece to be adopted by the conventional worker can be reliably prevented.

Further, since the positioning blocks 2-2 are moved by using a welding robot attached to the tacking process for welding the cross members W to W to the bed surface of the loading platform, a special drive is required. This eliminates the need for a source, thereby providing a low-cost and easy-to-maintain positioning jig device 1. In addition, since the positioning blocks 2 and 2 are moved using the idle time of the welding robot, the working efficiency of the tacking step is not sacrificed.

Next, the embodiment described above can be implemented with various changes. For example, in the illustrated embodiment, the configuration in which the two or more positioning blocks 2 to 2 are integrated using the connection plate 7 has been described, but all the positioning blocks 2 to 2 can be used without using the connection plate 7. Needless to say, the configuration may be such that it can be moved independently.

The magnets 3 to 3 serve as position holding means for holding the positioning blocks 2 to 2 at predetermined positions.
3, the positioning blocks 2 to 2 may be stopped and held at predetermined positions along the rails 5 and 5 by inserting and removing pins or engaging and disengaging a clamp arm. .

Although a welding robot has been exemplified as a means for moving the positioning blocks 2 to 2, other robots provided for performing various processes such as drilling, fusing, cutting, and painting may also be used. Good.

Further, the present invention is not limited to the positioning of the cross member W, but can be widely applied to the positioning of other various workpieces whose positioning positions need to be changed due to various factors. In addition to the configuration in which two sets are arranged in pairs on the left and right sides of the process, only one set can be used.

[Brief description of the drawings]

FIG. 1 is a side view of a positioning jig device, showing an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 positioning jig device 2 positioning block 2b positioning pin 2c positioning bush 3 magnet (position holding means) 3a support shaft 3b suction surface 5 slide rail 6 moving pin (welding robot side) 8. Compression spring

Claims (4)

[Claims] A positioning block for positioning a work is provided movably along a rail, and the positioning block is stopped and held at a predetermined position by position holding means arranged at a plurality of positions along the rail. A work positioning jig device, wherein the work is positioned. 2. The positioning jig apparatus according to claim 1, wherein a magnet that generates an attraction force when energized is used as the position holding means. 3. The positioning jig device according to claim 1, wherein the positioning block is moved by using a robot for processing the workpiece. Fixture device. 4. The positioning jig devices according to claim 1 are arranged in pairs on the left and right sides of the work, and a plurality of positioning blocks are arranged for each of the positioning jig devices on both left and right sides, and more than the positioning blocks. A work positioning jig device, wherein the position holding means is disposed.