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Device used for positioning part twice

A technology of parts and positioning pins, which is applied in the field of devices for two positioning of parts, can solve the problems of unstable two positioning of parts, inability to ensure dimensional stability, lack of Z-direction positioning mechanism, etc., to achieve enhanced positioning stability, The effect of preventing part movement and high positioning flexibility

Pending Publication Date: 2018-01-05
SHANGHAI ANDELAI AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the position, shape, quantity and other factors of parts of different models, the parts will be unstable twice after being modified on the original fixture.
Therefore, the parts produced by a pair of fixtures often have serious dimensional fluctuations due to the difference between the two parts.
In particular, some fixtures lack a Z-direction positioning mechanism, and the parts move during welding, which is not good for dimensional stability
Even if the Z-direction compression chuck is added, the two-time compression positioning mechanism cannot ensure dimensional stability

Method used

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  • Device used for positioning part twice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 A device for twice positioning of parts is shown, the device includes a base 1, a clamp turning mechanism arranged on the base 1, and a positioning mechanism movably connected with the clamp turning mechanism. The tongs turning mechanism includes a tongs member and a pressing plate member that are arranged on the base 1 and are respectively movably connected to the base 1. The tongs member includes a tongs support 3 hinged to the base 1 and fixedly arranged on Clamp 4 on 3; the pressing plate member includes a rotating arm 5 hinged with the base 1 and a Z-direction pressing plate 6 hinged with the rotating arm 5 . The positioning mechanism includes the first connecting plate 8 slidingly connected with the Z-direction pressing plate 6 in the X direction, the fixed splint 10 slidingly connected with the first connecting plate 8 in the Z direction, and the Y-direction positioning plate slidably connected with the fixed splint 10 in the Y direction 13. The...

Embodiment 2

[0026] In this embodiment, there are two positioning pins 2 in total, and the rest are the same as in Embodiment 1.

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Abstract

The invention relates to a device used for positioning a part twice. The device comprises a base and further comprises a clamp overturning mechanism arranged on the base and a positioning mechanism movably connected with the clamp overturning mechanism. The positioning mechanism is provided with at least one positioning pin. In the working state, the to-be-machined part is arranged on the positioning pin in a sleeving manner, the position of the part is adjusted through the positioning mechanism, afterwards, the part is firmly fixed under the pressure effect of the clamp overturning mechanism,and the part is positioned twice. Compared with the prior art, a disengaging structure of an original Z-direction clamping head is changed into a fixing structure of the clamp overturning mechanism in the device, the structure is simple, positioning flexibility is high, the positioning stability of the part can be effectively enhanced, jumping of the part during product welding is prevented, theproduct can be conveniently taken and placed, the production efficiency can be improved, and the device is widely applied to different types of automobile bottom plates and other parts.

Description

technical field [0001] The invention belongs to the technical field of fixtures, and relates to a device for twice positioning parts. Background technique [0002] At present, many automobile manufacturers need to carry out welding processing on the bottom plate in the production process of the automobile bottom plate. During welding, it needs to be fixed by welding fixtures, but the traditional welding fixtures are all corresponding to the car floor of a single model. This kind of welding fixture is useless after the model is upgraded, and the corresponding welding fixture needs to be remade, thereby increasing production cost. And some models still use a pair of fixtures for parts production after transformation. Due to the limitation of the position, shape, quantity and other factors of the parts of different models, the parts will be unstable twice after being modified on the original fixture. Therefore, the parts produced by a pair of fixtures often have serious dime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/04
Inventor 刘华曹新博姚炜
Owner SHANGHAI ANDELAI AUTO PARTS
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