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Pre-punching die device for plate workpiece

A technology for pre-punching and workpieces, applied in the direction of perforating tools, manufacturing tools, forming tools, etc., can solve the problems of thinning of the end face of the hole opening, failure to meet the size, and failure to meet the precision requirements of the hole turning, and achieve the hole The wall is full and the hole wall is not easy to crack

Inactive Publication Date: 2019-03-19
潜江市尚娟贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when general parts are turned over, the common practice is to punch a pre-punched hole on the part first, and then turn over the hole. The thinning of the end face of the orifice is serious, and the edge is easy to crack, which cannot meet the accuracy requirements of turning the hole

Method used

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  • Pre-punching die device for plate workpiece

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0009] As shown in the figure, the present invention is mainly composed of a stripping plate 1, a die insert 3, a die plate 4, a punching depression 4.1, a pre-punching punch 5, a punching cylinder 5.1 and a pressing spring 6 and the like.

[0010] The pre-punching die device for plate workpieces includes a discharge plate 1, a die insert 3, a concave template 4 and a pre-punching punch 5, and a discharge plate 1 is provided on the concave template 4. A punch hole is opened on the unloading plate 1, and a pre-punching punch 5 is inserted into the punch hole, and a die insert 3 is arranged in the concave template 4, and the bottom end of the pre-punching punch 5 There is a punching cylinder 5.1 integrally connected to the top of the punching cylinder 5.1, and the bottom edge of the punching cylinder 5.1 is sharp, that is, the bottom end surface of the punching c...

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PUM

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Abstract

The invention relates to a pre-punching die device for a plate workpiece. The pre-punching die device for the plate workpiece comprises a discharging plate, a female die insert, a female die plate anda pre-punching pin. The discharging plate is arranged on the female die plate, a punching pin hole is formed in the discharging plate, and the pre-punching pin is inserted into the punching pin holein a connected mode. The female die insert is arranged in the female die plate. A punching cylinder is integrally connected with the bottom end of the pre-punching pin, and the edge of the bottom endof the punching cylinder is sharp. A punching sunken portion is formed in the top end face of the female die plate and cooperates with the punching cylinder. When the pre-punching die device for the plate workpiece is used, the hole wall of a punched hole is relatively full, and the hole wall cracking phenomenon is not prone to happening.

Description

technical field [0001] The invention relates to a cold punching die, in particular to a die device for pre-punching holes of plate workpieces. Background technique [0002] In the prior art, when general parts are turned over, the common practice is to punch a pre-punched hole on the part first, and then turn over the hole. The thinning of the end face of the orifice is serious, and the edge is easy to crack, which cannot meet the precision requirements of turning the hole. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a pre-punching die device for plate workpieces with relatively full hole walls and less prone to hole wall cracking. [0004] According to the technical solution provided by the present invention, the mold device for pre-punching of plate workpieces includes a discharge plate, a die insert, a die plate and a pre-punching punch, and a discharge plate is provided on the die...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D28/34B21D37/10B21D28/26
CPCB21D28/34B21D28/265B21D37/10
Inventor 王代龙
Owner 潜江市尚娟贸易有限公司