Method for punching and spinning integrated formation of filter flange

Abstract

The invention provides a method for punching and spinning integrated formation of a filter flange. The method for punching and spinning integrated formation of the filter flange comprises the steps that firstly, a central hole and small holes around the central hole are punched by means of a round plate, and the edge of the central hole is chamfered, so that a blank is obtained; then punching and spinning integrated formation is conducted, the blank is installed on the conical surface of a lower die of punching and spinning integrated equipment, an upper die moves towards the lower die till the upper die and the lower die are completely attached to the blank, and inner hole flanging of the blank is achieved, so that a primary workpiece is obtained; the die assembly position of the upper die and the lower die is not changed, the primary workpiece is clamped, the upper die also serves as a mandrel for spinning formation, the lower die also serves as a spinning tailstock, and multi-pass spinning of the primary workpiece is achieved by means of a spinning wheel, so that a secondary workpiece is obtained; then shape righting is conducted on the secondary workpiece, so that a final workpiece is obtained; and finally, edge cutting is conducted on the final workpiece, so that the filter flange is obtained. By the adoption of the method for punching and spinning integrated formation of the filter flange, the number of sets of dies can be effectively reduced, the formation time is shortened, and production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of filter flange forming, and in particular relates to a method for integrally forming a filter flange by punching and spinning. Background technique [0002] The automotive filter is an indispensable component to ensure the normal operation, reliability and durability of the automotive engine. The oil filter plays an important role in ensuring the normal operation of the lubrication system and prolonging the service life of the engine oil. The oil filter housing and end flange are generally stamped and formed. [0003] Due to the complex structure and high performance requirements of the end flange of the oil filter, its stamping process has undergone multiple steps, several passes and multiple intermediate stress relief annealings. Its typical stamping forming process mainly includes one punching (small hole around), two deep drawing, one trimming, one punching (center hole), one flanging (inner hole flan...

AI Technical Summary

Problems solved by technology

Its typical stamping forming process mainly includes one punching (small hole around), two deep drawing, one trimming, one punching (center hole), one flanging (inner hole flanging), this forming process requires multiple processes Step, multiple sets of moulds, complex forming process, long production cycle

Images