A high-precision shaft hole punching die for sheet metal parts

A punching die, high-precision technology, applied in the field of sheet metal parts forming die, metal sheet metal parts high-precision shaft hole punching metal die field, can solve the problem of inconsistent size, affecting the quality of the motor, etc.

CN105750404BActive Publication Date: 2018-05-08御马精密科技(江苏)股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-05-08

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Abstract

The invention discloses a high-precision shaft hole punching die for a sheet metal part. The high-precision shaft hole punching die comprises an upper convex die, a discharging plate elastically configured with the upper convex die and a lower concave die. The high-precision shaft hole punching die is mainly characterized in that a compacting plate used for compacting a processed workpiece is arranged on the working surface of the discharging plate; under working conditions, the processed workpiece is subjected to shaft hole punching under the condition that the compacting plate is compacted with a lower concave die surface and a surface. The high-precision shaft hole punching die disclosed by the invention has the characteristics of being reasonable in technical scheme, simple in structure, high in shaft hole punching precision and the like and particularly suitable for the production of punching shaft holes of motor laminated stators.
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Description

technical field

[0001] The invention relates to a high-precision shaft hole punching die for sheet metal parts, in particular to a high-precision shaft hole punching metal die for metal sheet parts, which belongs to the technology of sheet metal forming dies. Background technique

[0002] In the prior art, the punching die for the shaft hole of the sheet metal part, especially the shaft hole of the sheet metal part with a diameter > φ10mm, under its working condition, exists between the unloading plate and the working surface of the lower die (micro-clearance fit) The processed sheet metal workpieces are generally in a non-compacted free state, and at the moment when the processed sheet metal workpiece is punched by the shaft hole punch, the metal sheet suffered during the rolling process of the sheet metal The destruction of the formed "strip-like structure" inevitably produces expansion or contraction deformation of the shaft hole of the processed sheet metal workpiece,...

Examples

Embodiment Construction

[0022] The following describes the present invention in detail through the description of specific embodiments with reference to the accompanying drawings, but is not limited thereto. Other technical solutions proposed by adopting the technical concept of the present invention all belong to the protection scope of the present invention.

[0023] A typical specific implementation, as attached figure 1 , 2 as shown,

[0024] A high-precision axial hole punching die for sheet metal parts, including an upper punch 1, a discharge plate 2 elastically configured with the upper punch 1, and a lower die 3; the upper punch 1, the discharge plate 2 and the lower die Die 3, according to the technical requirements of the workpiece to be processed, is manufactured using common technical solutions and cooperates with each other for assembly work, and its:

[0025] There is a compacting plate 4 with a through hole 4-1 for compacting the workpiece to be processed on the working surface of th...