Positioning groove processing die for processing radial rectangular hole in pin

A technology for processing molds and rectangular holes, which is applied in the field of positioning groove processing molds, can solve the problems of increased scrap rate of pins, deformation of rectangular holes, and low dimensional accuracy, and achieves the effects of improved production efficiency, stable positioning, and high dimensional accuracy.

Inactive Publication Date: 2014-08-06
NINGBO GANGFA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the pin is a cylindrical part, and the foreign punch eye 04 is also a circular pit, the pins processed by this method are often deformed due to unstable positioning, or the dimensional accuracy is not high, so that The finished product scrap rate of the pin is greatly increased

Method used

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  • Positioning groove processing die for processing radial rectangular hole in pin
  • Positioning groove processing die for processing radial rectangular hole in pin
  • Positioning groove processing die for processing radial rectangular hole in pin

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Depend on figure 2 It can be seen from the schematic diagram of the structure of the pin of the present invention that the end face of the pin shank 2 has a radial positioning groove 4 punched out by the die, instead of the artificial punching hole in the prior art.

[0029] Depend on Figure 3 ~ Figure 5 As can be seen from the structural schematic diagram of the positioning groove processing mold for processing radial oblong holes of the present invention, it includes a lower mold assembly, an upper mold assembly, a punch 21, a locking mechanism and a guide mechanism. The lower mold assembly is installed on the workbench, one end of the guide mechanism is fixedly connected with the lower mold assembly, and the other end is slidably connected with the upper mold assembly. The number of pins 18 to be processed at one time is...

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Abstract

The invention discloses a positioning groove processing die for processing a radial rectangular hole in a pin. The positioning groove processing die comprises a lower die subassembly, an upper die subassembly, a punch (21), a locking mechanism and a guiding mechanism, wherein the lower die subassembly is arranged on a working table; one end of the guiding mechanism is fixedly connected with the lower die subassembly, and the other end of the guiding mechanism is connected in match with the upper die subassembly in a manner of slipping; two processed pins (18) are clamped at each time; polish rods of the pins (18) are oppositely and symmetrically positioned on the lower die subassembly, and fixedly connected to the lower die subassembly through the locking mechanism; the punch (21) is placed between the two pins (18), and the upper end of the punch (21) is fixedly connected with the upper die subassembly; and the two pins (18) are synchronously extruded through the lower end of the punch (21) after the upper die subassembly and the lower die subassembly are closed. With the structure, a positioning groove is adopted for positioning, so that the processed rectangular hole can be avoided being deformed, further, the follow-up processing dimensional precision is higher, and moreover, the production efficiency can also be improved.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a positioning groove processing mold used for processing radially rectangular holes on pins. Background technique [0002] A pin is a mechanical part commonly used in the Ministry of Railways. prior art pins such as figure 1 As shown in , it includes a head 01 and a rod 02, the head 01 is disc-shaped, the rod 02 is a polished rod, and the rod 02 has a rectangular hole 03 that penetrates radially. Usually, in order to have a positioning when processing this rectangular hole 03, punch a foreign punch hole 04 on the center position of the end face of the rod portion 02. However, since the pin is a cylindrical part, and the foreign punch eye 04 is also a circular pit, the pins processed by this method are often deformed due to unstable positioning, or the dimensional accuracy is not high, so that The finished product scrap rate of the pin is greatly increased. Contents of the inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D28/14
Inventor 谢相刚陆颂荫
Owner NINGBO GANGFA IND
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