Metal plate non-riveting connection forming die and method

Abstract

The invention discloses a metal plate rivet-free connection forming die which comprises an upper male die, a blank holder, a female die, a lower male die and a cushion block, and further provides a metal plate rivet-free connection forming method which comprises the following steps that 1, two metal plates are arranged on the female die up and down, the blank holder moves downwards to press the upper metal plate and the lower metal plate, and the upper male die and the lower male die are pressed tightly; the upper male die moves downwards to enable the upper metal plate and the lower metal plate to generate plastic deformation, and the upper metal plate is embedded into the lower metal plate; 2, the upper male die and the blank holder are static, the lower male die moves upwards to extrude the metal plates till the upper surface of the lower male die is flush with the upper surface of the cushion block, and the upper metal plates and the lower metal plates are fully embedded; and 3, the upper male die, the blank holder and the lower male die are reset, the connected metal plate is taken out, and a complete procedure is completed. The protruding height of the metal plate non-riveting connection joint is effectively reduced, the interlocking value of the joint is increased, and the overall strength of the joint is improved.

Description

technical field [0001] The invention relates to the field of metal plate connection, in particular to a forming die and method for riveting-free connection of metal plates. technical background [0002] With the increasing requirements for energy saving, material saving and environmental protection in today's world, in the field of metal sheet joining, the traditional self-piercing riveting and resistance spot welding processes do not meet today's problems due to increased dead weight, easy corrosion at joints and cumbersome operations. social development trend. The riveted connection process utilizes the plastic deformation of the plate itself to achieve mechanical interlocking, which has the advantages of wide application, low cost, and simple operation. However, the current riveted connection process has problems such as insufficient joint strength and high joint protrusion, which affects the product. The service life and surface quality are gradually difficult to meet t...

AI Technical Summary

Problems solved by technology

The rivetless connection process uses the plastic deformation of the plate itself to realize mechanical interlocking, which has the advantages of wide application range, low cost, and simple operation. However, the current rivetless connection process has problems such as insufficient joint strength and high joint protrusions, which affect the product. The service life and surface quality are gradually difficult to meet the actual production needs

Images