Two-way centering positioning and double-wedge floating self-locking type fixing tool

Abstract

The invention discloses a two-way centering positioning and double-wedge floating self-locking type fixing tool which comprises a tool main body; a to-be-clamped product is fixed on the tool main body; the tool main body is further provided with a two-way automatic centering mechanism, a double-wedge self-locking floating supporting mechanism and an automatic guiding and compression mechanism; thetwo-way automatic centering mechanism realizes positioning of the to-be-clamped product in a horizontal direction; all contact points of the double-wedge self-locking floating supporting mechanism ina vertical direction are attached to the to-be-clamped product in a floating manner; and the automatic guiding and compression mechanism vertically acts downward to press the to-be-clamped product. By means of the mode, the two-way centering positioning and double-wedge floating self-locking type fixing tool can effectively guarantee the positioning requirements for the product in the horizontaldirection and floating attachment of all the contact points in the vertical direction to the product, eliminates the influence of product machining deformation on subsequent further finish machining,realizes complete constraint of the product, ensures the quality of the product and meets the requirements for batch production.

Description

technical field [0001] The invention relates to the technical field of forming battery trays, in particular to a two-way centered positioning and double-wedge floating self-locking fixing tool. Background technique [0002] In recent years, the new energy vehicle industry has developed rapidly. As the carrier of new energy vehicle batteries, lightweight aluminum alloy battery trays have become the mainstream choice, and tooling solutions for battery tray processing are also urgently needed. [0003] The existing forming process of aluminum alloy battery trays is mainly welding. The thermal conductivity and specific heat of aluminum alloy itself are more than twice that of traditional steel parts, resulting in a large expansion coefficient during the welding process. Feedback to the product is an uncontrollable deformation of the product Big. [0004] When further welding or machining the semi-finished products that have been welded in the production process of aluminum allo...

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Problems solved by technology

[0003] The existing forming process of aluminum alloy battery trays is mainly welding. The thermal conductivity and specific heat of aluminum alloy itself are more than twice that of traditional steel parts, resulting in a large expansion coefficient during the welding process. Feedback to the product is an uncontrollable deformation of the product Big

[0004] When further welding or machining the semi-finished products that have been welded in the production process of aluminum alloy battery trays, the traditional positioning and clamping methods cannot be accurately positioned in the subsequent processes due to the large welding deformation of the products in the previous process, and it is necessary to rely on manual positioning for each The product is centered; and the flatness of the product is about 1.5mm. The fixed support will cause the side support point to hang due to the flatness problem.

[0005] One of the existing tooling schemes is to use a horizontal fixed reference block for positioning: such as figure 1 Use two sides to lean against the fixed reference block 1', and apply force from two opposite directions (the force mechanism can be electricity, gas, liquid, etc.), so that the product can stick to the fixed reference block 1' to play a positioning function. However, the product is in the The errors accumulated in previous processes, such as TIG welding, MIG welding, and FSW (friction stir welding), are large, resulting in unstable product dimensions. When CNC machining, the consistency of the product 3' is required, otherwise there will be deviation or Poor holes require additional manual positioning for each product, so the traditional positioning scheme is only suitable for small-scale manual processing products, and cannot be automated in batches.

[0006] There is also a positioning in the vertical direction: such as figure 2 Use the fixed support block 2" to position the product 1". As above, due to the large cumulative deformation in the previous process, the flatness of the product 1" is about 1.5mm. Only a few points can stick to the product in such a fixed support method. If the support function is used, the large side support point will be suspended due to poor flatness. Too many suspended points in the process of processing will cause the product to be unstable in the Z direction, so that the suspended point of the product will vibrate the tool during processing, and eventually cause the tool to be damaged. Or the product is poorly processed or the product is scrapped

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