One-step press punching forming mold for high-accuracy irregular holes of copper holder

Abstract

The invention relates to a one-step press punching forming mold for high-accuracy irregular holes of a copper holder. An upper mold plate is connected onto a punching machine through an upper mold handle and connected with a fixed punch locating plate and a discharge plate through bolts. Three internal locating guide columns are arranged in the fixed punch locating plate, and a punching male mold is located in the fixed punch locating plate. A lower mold plate is fixed on a working platform of the punching machine, through internal locating guide column matching holes are arranged on the lower mold plate, and the upper portion of the lower mold plate is connected with a punching female mold. A locating device is arranged in the female mold, a holder end cover is positioned on the female mold, and a pressing device is arranged between the discharge plate and the female mold. For high-accuracy machining requirements for punching holes of the holder upper cover, forming punching is utilized to ensure the punching shape accuracy of punching irregular holes, and the punching stress concentration of the punching irregular holes is reduced; and due to the arrangement of the pressing device, the end cover deformation is eliminated, the surface roughness is improved, indentations are avoided, phenomena of tearing and calendering burrs do not exist, the complete interchangeability between the holder end cover and the base is guaranteed.

Description

technical field [0001] The invention relates to a stamping forming mold for processing the upper cover hole of a high-precision bearing cage, in particular to a one-time stamping forming mold for a high-precision special-shaped hole of a copper cage, and belongs to the technical field of stamping of bearing parts. Background technique [0002] Among the high-precision bearing cages, there is a cage that belongs to the two-body riveted structure with its own rivets. The upper cover of the cage with this structure needs to process multiple matching holes. The bosses of the pillars of the base are matched, and the equal division difference is required to be 0.05 mm. The matching holes are connected by four arcs, and the connection is chamfered for stress relief, and the chamfer must be less than 0.125 mm. The four arcs are different in size and shape, two of which are symmetrical small arcs and two are asymmetrical large arcs. The equal fractions of these products are diffe...

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Problems solved by technology

[0003] In view of the gaps in the existing technology and product requirements, the purpose of the present invention is to provide a one-time molding stamping die, which is used for processing the upper cover of the cage and The trapezoidal special-shaped hole is designed to solve the strict problems of end cover deformation and surface quality during the stamping process, and multiple holes are stamped and formed at one time

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