Hinge sleeve pipe and punching mould and production process of hinge sleeve pipe

Abstract

The invention provides a punching mould of a hinge sleeve pipe. The punching mould of the hinge sleeve pipe is used for manufacturing chamfers on a semi-finished product of the hinge sleeve pipe in a pressing mode and comprises an upper convex mould, a lower concave mould and a punch head, wherein the lower concave mould can be matched with the upper convex mould to position the semi-finished product, and the punch head is connected with the upper convex mould. The punching mould of the hinge sleeve pipe guarantees the chamfering shape and the punching accuracy of positions, avoids shape errors and position errors, enables the chamfers to be distributed on the hinge sleeve pipe more evenly, and improves the appearance quality of the hinge sleeve pipe. The invention further provides a production process of the hinge sleeve pipe by means of the punching mould and the hinge sleeve pipe manufactured through the production process.

Description

technical field [0001] The present invention relates to the technical field of auto parts, and more specifically, relates to a stamping die for a hinge sleeve. A hinge sleeve manufactured by craftsmanship. Background technique [0002] The hinge sleeve is an important part of the car subframe, which is used to connect the rear axle of the car and the shock absorbing spring, and mainly plays the role of connection and support. [0003] In the prior art, the production process of the hinge sleeve is as follows: use a stamping die to blank and punch the plate, and use a lathe to turn a plurality of chamfers on the two sides of the material for mutual connection, such as figure 1 As shown, so that the two sides can be clamped in the subsequent process, and then the material is preformed, so that the material has the shape and outline of the hinge sleeve before rolling, and the material is rolled so that it has The two sides of the chamfer are brought into contact and eventuall...

AI Technical Summary

Problems solved by technology

[0004] In the above process, since the chamfer is formed by turning on a lathe, due to factors such as machining errors and position errors, there are often large differences in shape and size between different chamfers on the same hinge sleeve or different hinge sleeves. The position error makes the distribution of the chamfer on the hinge bushing uneven, which affects the appearance and quality of the hinge bushing

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