Manufacturing method of large square nut for automobile chassis connecting system
A connection system and automobile chassis technology, applied in the direction of nuts, connection components, manufacturing tools, etc., can solve the problems of failing to meet market requirements, heavy processing workload, slow production speed, etc., and achieve high safety in use and low production cost. Decrease, the effect of product quality stability
Active Publication Date: 2019-12-20
NINGBO ANCHOR FASTENERS INDAL
View PDF11 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] At present, the large square nuts used in the automobile chassis connection system currently used in China require a large amount of machining work, which is not only consumable, but also the production speed is extremely slow, which cannot meet the requirements of the market.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] Refer to attached picture. The manufacturing method of the large square nut used in the automobile chassis connection system of the present invention, the finished product automobile chassis connection system uses a large square nut 100 comprising a rounded square nut head 101, a cylindrical part 102 at the bottom of the rounded square nut head, the nut The central hole 103 passes through the cylindrical part 102 and the rounded square nut head 101, the diagonal length L of the rounded square nut head 101 is 1.8-2.2 times the diameter D of the cylindrical part 102, and the diagonal The length L is the length of the line between the vertices of the diagonal arc, the rounded square nut head 101 is a thin plate structure, the ratio of the length H of the cylindrical part to the thickness T of the rounded square nut head is 3.5-4.5, and, An axial groove 104 is provided in the middle of two opposite sides of the rounded square nut head 101 .
[0019] The disk raw material i...
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
Login to View More Abstract
The invention provides a manufacturing method of a large square nut for an automobile chassis connecting system. A fillet square nut head and a cylindrical part at the lower part of the fillet squarenut head can be manufactured through a cold heading method, and an axial groove is formed in the middle of two opposite edges of the fillet square nut head. According to the method, the step arrangement is reasonable, the large square nut for the automobile chassis connecting system can be formed at one time by adopting a multi-station cold extruding forming technology, materials are saved, the process steps are few, only inner hole tapping needs to be carried out subsequently, the materials can be saved by 11%, the production speed can reach 60 PCS / min, the average daily yield is 28800 PCS, the production cost is reduced by 50% or above, and the waste of manpower is reduced. A cold extruded formed product has the advantages that the surface is smooth, the size precision control and the product quality are stable, the structure is firmer, the use safety is high, the bearing capacity is strong, and the installation is quick and easy. The method is widely applied to high-grade automobilechassis connecting systems.
Description
technical field [0001] The invention relates to the technical field of multi-station cold heading, in particular to a method for manufacturing a large square nut used in an automobile chassis connection system. Background technique [0002] The cross-sectional shape of the large square nut used in the automobile chassis connection system is roughly a T-shaped structure. The shape and size difference between the top and the bottom part are relatively large, and there are side ear grooves on the top. It is difficult to use the cold extrusion process to manufacture the whole process. [0003] The large square nut for the connection system of the automobile chassis includes a rounded square nut head and a cylindrical part at the lower part of the rounded square nut head. The central hole of the nut runs through the lower cylindrical part and the rounded square nut head. The rounded square nut The diagonal length of the head is basically 1.8-2.2 times the diameter of the lower cy...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/70B21J5/08B21J5/10B21J13/02
CPCB21J5/08B21J5/10B21J13/02B21K1/70
Inventor 张金清
Owner NINGBO ANCHOR FASTENERS INDAL