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

Assistant positioning method for self-piercing riveting

A technology of auxiliary positioning and self-piercing riveting, which is applied in the field of auxiliary positioning of self-piercing riveting, can solve problems such as the inability to guarantee the quality and production efficiency of self-piercing riveting, and difficulty in centering, so as to promote wide application, ensure quality, and improve production efficiency Effect

Inactive Publication Date: 2015-06-03
KUNMING UNIV OF SCI & TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an auxiliary positioning method for self-piercing riveting to solve the problems of difficulty in centering in the process of self-piercing riveting and the inability to guarantee the quality and production efficiency of self-piercing riveting

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
  • Assistant positioning method for self-piercing riveting
  • Assistant positioning method for self-piercing riveting
  • Assistant positioning method for self-piercing riveting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The self-piercing riveting auxiliary positioning method of this embodiment is as follows: Figure 1~4 As shown, take the 25mm width test piece as an example.

[0016] (1) Prepare the auxiliary positioning mold according to the self-piercing riveting equipment. The auxiliary positioning mold is composed of a vertically connected back plate and a bottom plate in an "L" shape. The bottom plate has a positioning hole 1 with the same outer diameter as the lower riveting die 2 of the self-piercing riveting equipment. The distance between the center position of the positioning hole 1 and the back plate is 12.5 mm, the thickness of the bottom plate is the same as the height of the lower riveting die 2, and there is a middle scale line 3 on the back plate that coincides with the center line of the positioning hole 1;

[0017] (2) First set the positioning hole 1 of the auxiliary positioning mold prepared in step 1 on the lower riveting mold 2 of the self-piercing r...

Embodiment 2

[0018] Embodiment 2: The self-piercing riveting auxiliary positioning method of this embodiment is as follows: Figure 1~4 shown.

[0019] (1) Prepare the auxiliary positioning mold according to the self-piercing riveting equipment. The auxiliary positioning mold is composed of a vertically connected back plate and a bottom plate in an "L" shape. The bottom plate has a positioning hole 1 with the same outer diameter as the lower riveting die 2 of the self-piercing riveting equipment. The position of the positioning hole 1 is determined according to the size of the test piece, the thickness of the bottom plate is the same as the height of the lower riveting die 2, and the middle scale line 3 coincides with the center line of the positioning hole 1 on the "L"-shaped back plate;

[0020] (2) First set the positioning hole 1 of the auxiliary positioning mold prepared in step 1 on the lower riveting mold 2 of the self-piercing riveting equipment, keep the back plate vertically upwa...

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 the technical field of self-piercing riveting processes, in particular to an assistant positioning method for self-piercing riveting. An assistant positioning mold is manufactured according to a self-piercing riveting device and is composed by a back plate and a bottom plate which are perpendicularly connected to form an L shape. A positioning hole with the external diameter the same as that of a lower riveting mold of the self-piercing riveting device, the position of the positioning hole is determined by the size of a test piece needing riveting, the thickness of the bottom plate is the same as the height of the lower riveting mold, and a middle scale is vertically arranged on the back plate and coincides with the circle center of the positioning hole. First, the positioning hole of the assistant positioning mold is sleeved on the lower riveting mold of the self-piercing riveting device, the back plate is kept vertically upward, then the test piece is placed on the bottom plate of the assistant positioning mold and close to the back plate, the position needing riveting of the test piece is directed at the middle scale, and then the assistant positioning for the self-piercing riveting is achieved. A self-piercing riveting joint can be accurately centered in a very short time, and not only is the self-piercing riveting quality of the self-piercing riveting joint ensured, but also the manufacturing efficiency is promoted.

Description

technical field [0001] The invention relates to the technical field of self-piercing riveting, in particular to an auxiliary positioning method for self-piercing riveting. Background technique [0002] Self-piercing riveting technology is a new thin-plate material connection technology that has developed rapidly in recent years. It is especially suitable for difficult-to-weld plates such as light alloys and composite materials. It is the most ideal replacement technology for traditional spot welding technology. application is becoming increasingly widespread. In the self-piercing riveting process of the plate, the self-piercing rivet and the plate undergo large plastic deformation together to form a mechanical internal lock and achieve a firm mechanical connection. However, the currently used self-piercing riveting equipment does not have a positioning device at the lower riveting die, and the operator must perform self-piercing riveting through visual inspection based on e...

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 Patents(China)
IPC IPC(8): B21J15/38
Inventor 何晓聪
Owner KUNMING UNIV OF SCI & TECH