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Technology for improving riveting performance of nut

A riveting and crafting technology, which is applied in the direction of nuts, connecting components, threaded fasteners, etc., to achieve the effect of tight combination, reducing riveting gap and improving riveting performance

Pending Publication Date: 2019-04-05
SHANDONG AOLIN CAR FITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing pressure riveting process is to pre-fill a large round hole on the part, and then insert the part into the riveting nut through the round hole. After positioning, the upper die punch moves down to complete the riveting between the part and the nut. Suitable for products with small material thickness (thickness less than 2mm); products with thickness greater than 2mm cannot be riveted through the above structure

Method used

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  • Technology for improving riveting performance of nut
  • Technology for improving riveting performance of nut
  • Technology for improving riveting performance of nut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a process for improving the riveting performance of a nut includes the following steps:

[0027] (1) Pre-punch a pre-punched hole (11) on the part to be riveted (1), and perform flanging around the pre-punched hole (11) through a flanging process to form a downwardly curved arc flanging (12) ;

[0028] (2) The part to be riveted (1) is sleeved into the riveting nut from the arc-shaped flange (12), and after positioning, the upper die punch moves down to complete the riveting between the part and the riveting nut.

[0029] Wherein, the riveting nut includes a nut body 21 and a protrusion 22 provided on the nut body. The protrusion 22 is provided with a slot 23. One side of the slot 23 is vertically downward along the nut body 21. , The other side is arc-shaped. The slot 23 has a depth of 5-10 mm, a bottom width of 2-3 mm, and a top width of 5-8 mm. The raised portion 22 is an annular raised block projecting outward from the side of the nut body 21,...

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Abstract

The invention relates to a technology for improving riveting performance of a nut. The technology for improving the riveting performance of the nut comprises the following steps that (1) a pre-punchedhole (11) is pre-punched in a part to be riveted (1), and flanging is carried out on the periphery of the pre-punched hole (11) through flanging processes to form an arc-shaped flange (12) bent downwards; and (2) the riveting nut sleeves the part to be riveted (1) from the arc-shaped flange (12), and the riveting between the part and the riveting nut is completed through downward motion of an upper mould punch pin after positioning. Compared with the prior art, the stability of products is guaranteed, and the quality of the products is greatly improved.

Description

Technical field [0001] The invention relates to an assembling tool for automobile parts, in particular to a process for improving the riveting performance of a nut. Background technique [0002] In recent years, with the rapid development of my country's economy, my country's automobile industry, especially the car industry, has been on the track of rapid development. Cars have gradually entered the homes of thousands of people and become a means of transportation that people often use in daily life. In order to meet the booming demand for cars, major car manufacturers continue to expand the production output of cars and continue to introduce various car brands. The car production is developing in a blowout pattern. It is required that all segments of car production must be fast to meet the needs of the market. In order to meet In mass production, various automakers adopt standardized and automated production to meet market demand for products. [0003] Automobile lightweight is a...

Claims

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Application Information

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IPC IPC(8): B21D39/00F16B37/06
CPCF16B37/065B21D39/00
Inventor 李涛尤佳佳郝俏
Owner SHANDONG AOLIN CAR FITTINGS
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