Hook plowing type manufacturing process of band type commutator segment assembly

Abstract

The invention discloses a hook plowing type manufacturing process of a band type commutator segment assembly. The hook plowing type manufacturing process of the band type commutator segment assembly is characterized in that the hook plowing type manufacturing process includes the steps of conducting warm extrusion treatment on copper wire rods to form the band type commutator segment assembly, conducting drawing treatment on the band type commutator segment assembly, sequentially conducting blanking, bending, edge rolling, inner hook plowing, and cold extrusion treatment for punching the shape of an inner hook on the drawn band type commutator segment assembly, and forming the commutator segment assembly which is provided with a forked tail and is even in depth of a hook groove of the inner hook and the width of the inner hook. According to the hook plowing type manufacturing process of the band type commutator segment assembly, the raw material utilization rate is high, materials can be saved by about 30%, mechanism strength of the commutator segment assembly is ensured due to the fact that the forked tail on the commutator segment assembly is free of deformation and strength damage, the outer circular degree of a commutator product is good due to the fact that the depth of the hook groove of the inner hook and the width of the inner hook are even, outer circle machining is not needed, adhesion strength of the commutator segment assembly and commutator die plastic can be further increased, and the hook plowing type manufacturing process is not limited by the size of a die and suitable for commutators of various specifications.

Description

technical field [0001] The invention relates to a manufacturing process of a commutator for a motor, in particular to a manufacturing process of a belt-type commutating plate group with a dovetail applied to the commutator. Background technique [0002] At present, the known manufacturing process of the belt-type commutator segment group with dovetails for the commutator is: through the warm extrusion treatment of the copper wire rod, and through two drawing processes (that is, the belt-type commutator segments The dimensional accuracy of the group meets the required requirements), and then the belt-shaped commutator segment group with dovetail is produced by punching through a punching machine and a special mold. In the process of using the mold to punch the dovetail of the belt-type commutator group, the punched dovetail is easy to fall off and deform due to the resistance, and the quality of the punching process is unstable, which will directly affect the subsequent proce...

AI Technical Summary

Problems solved by technology

In the process of using the mold to punch the dovetail of the belt-type commutator group, the punched dovetail is easy to fall off and deform due to the resistance, and the quality of the punching process is unstable, which will directly affect the subsequent process of the commutator group and the molding compound. The bonding strength of the combination; at the same time, the depth of the inner hook groove of the commutator plate group is uneven and the width of the inner hook is uneven, resulting in insufficient outer roundness of the commutator product, and further outer round processing is required; And the punched copper end material directly becomes waste, resulting in large consumption of raw materials and high production costs

In the case of limited size of stamping production equipment and special processing molds, the commutator segment group of this structure is not suitable for large-sized commutator products, only suitable for commutator products with an outer diameter of less than 30mm

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