Unlock instant, AI-driven research and patent intelligence for your innovation.

Cold forming method for large-end ultra-short part

A technology of cold forming and parts, applied in the direction of connecting components, threaded fasteners, bolts, etc., can solve the problems of unable to produce parts, damaged clamps, parts damage, etc., and achieve the effect of increasing the effective opening distance and reducing production costs

Inactive Publication Date: 2020-07-31
DONGFENG MOTOR FASTENER CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] like figure 2 As shown in the ultra-short part 3, when the ultra-short part 3 enters the mold, the clamp 2 needs to be opened in time. Since the distance between the clamp 2 and the head of the ultra-short part 3 is too short, the clamp 2 will collide before it is fully opened. to the mold on the station, causing damage to the part, and also damage the clamp, making it impossible to produce the part

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
  • Cold forming method for large-end ultra-short part
  • Cold forming method for large-end ultra-short part
  • Cold forming method for large-end ultra-short part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A kind of cold forming method of big-end ultra-short parts, concrete steps are as follows:

[0022] The first step: if image 3 As shown, the length of a station part 101 = the length of the raw material (bar) = 26mm, a station part 101 is extruded through a station mold 102, and the width of a station clamp 103 is 5mm. The cold heading process The middle clamp 103 can be opened normally; the width of the clamp 103 can also be understood as the thickness of the clamping part of the clamp;

[0023] The second step: if Figure 4 As shown, the second-station part 201 is obtained after the one-station part is extruded. In the cold heading process, it is definitely not possible to open the rod part in time. Considering the opening problem of the two-station clamp 202, a 15mm wide two-station clamp 202 is chosen to clamp the head part of the two-station part 201 in the Extruding on the two-station mold 203, the two-station clamp 202 can be opened normally during the cold h...

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 discloses a cold forming method for a large-end ultra-short part. The cold forming method comprises the following steps: changing a conventional transmitting method for a part rod clamped by a clamp into a part transmitting method by clamping a part head part via the clamp; adopting a floating type upper ejector pin, increasing an effective opening distance of the clamp, and enablingthe clamp to normally open. The cold forming method can be used for continuously producing the ultra-short part, does not add a turning-off process, and reduces production cost.

Description

technical field [0001] The invention relates to a cold forming method of a large-head ultra-short part. Background technique [0002] At present, each cold heading machine is limited to the length range of the production parts. For example, the shortest flange bolt that can be produced by Kasuga equipment CBF-84S is 15mm (introduction to the equipment instruction manual-mainly because the clamp is too late to open and the parts cannot be transferred. ), bolts with a rod length less than 15mm will increase the turning process. [0003] Such as figure 1 As shown, the normal part 1 is transferred between the stations of the cold heading machine by clamping the stem of the part 1 with the clamp 2. [0004] Such as figure 2 As shown in the ultra-short part 3, when the ultra-short part 3 enters the mold, the clamp 2 needs to be opened in time. Since the distance between the clamp 2 and the head of the ultra-short part 3 is too short, the clamp 2 will collide before it is fully...

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): B21J5/00B21J13/10B21K1/44B21K27/00
CPCB21J5/002B21J13/10B21K1/44B21K27/00
Inventor 王军舰杜宏斌李玉涛
Owner DONGFENG MOTOR FASTENER CO LTD