Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Die for eccentric bolt cold heading machining

An eccentric bolt and mold technology, applied in the field of parts processing, can solve the problems of ineffective guarantee of finished product quality, poor production stability and high production cost, and achieve the effects of low defective rate, high forming efficiency and good forming effect

Active Publication Date: 2017-08-01
ZHOUSHAN 7412 FACTORY
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the mold structure is complex, the production cost is high, and the production stability is poor when using the mold, and the quality of the finished product cannot be effectively guaranteed, so the mold structure needs further improvement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Die for eccentric bolt cold heading machining
  • Die for eccentric bolt cold heading machining
  • Die for eccentric bolt cold heading machining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as Figure 1 to Figure 7 As shown, the mold used for cold heading processing of eccentric bolts includes a lower mold and an upper mold that can move up and down relative to the lower mold. The upper mold is connected to the driving device. The upper mold includes the first stamping upper mold, the second Two stamping upper dies and edge trimming upper dies, the lower die includes a first stamping lower die corresponding to the upper die in sequence, a second stamping lower die and a trimming lower die, the lower part of the first stamping upper die is provided with an extrusion Press the first molding groove of the head of the part 6, the opening of the first molding groove is the eccentric molding cavity 11 that makes the side of the part 6 produce an eccentric protrusion 61, and the bottom of the first molding groove is to make ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a die for eccentric bolt cold heading machining. The die comprises a lower die body and an upper die body, the upper die body is connected with a driving device and comprises a first stamping upper die, a second stamping upper die and an edge cutting upper die, and the lower die body comprises a first stamping lower die, a second stamping lower die and an edge cutting lower die which correspond to the first stamping upper die, the second stamping upper die and the edge cutting upper die of the upper die body in sequence; a first molding groove is formed in the lower portion of the first stamping upper die, an eccentric modeling cavity is formed in the position of an opening of the first molding groove, a hexagon modeling cavity is formed in the bottom of the first molding groove, and the connecting line of one set of opposite angles of an overlook projection of the hexagon modeling cavity is collinear with the protruding direction of the eccentric modeling cavity; and a first positioning groove is formed in the upper portion of the first stamping lower die, a second molding groove is formed in the lower portion of the second stamping upper die, a second positioning groove is formed in the upper portion of the second stamping lower die, a positioning part is arranged at the lower portion of the edge cutting upper die, the side face of the positioning part is sleeved with an annular edge cutting die body, and an edge cutting die positioning groove is formed in the upper portion of the edge cutting lower die. The die has the beneficial effects that the structure is simple, the manufacturing cost is low, the production stability is high, and the finished product quality can be effectively guaranteed.

Description

technical field [0001] The invention relates to the field of part processing, in particular to a mold for cold heading processing of eccentric bolts. Background technique [0002] There is an existing Chinese invention patent with the patent number CN201510768427.0 titled "A Cold Heading Process for Chassis Eccentric Nuts and Die Structure for Forming Special-shaped Holes", which discloses a cold heading process for chassis eccentric nuts: shearing wire; Shaping; upsetting hexagonal and stretched holes; pre-upsetting eccentric flange for the first time; second pre-upsetting eccentric flange; forming eccentric flange; forming special-shaped holes. The mold for forming special-shaped holes includes a main mold unit and a punching die unit. The main mold unit includes a main mold shell, a main mold inner mold, a main mold inner pad, a main mold thimble and a main mold ejector pin, and a punching mold unit includes a punching mold shell and a punching mold pad. And the die thim...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21K1/46
CPCB21J13/02B21K1/46
Inventor 张理锋
Owner ZHOUSHAN 7412 FACTORY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com