Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Precision die forging and shaping technical method for automobile steering knuckle rough type parts

A technology for automobile steering knuckle and precision die forging, which is applied in vehicle parts, railway car body parts, metal processing equipment, etc., to achieve the effects of small forging allowance and tolerance, reasonable technological process, and reduced contact friction resistance.

Inactive Publication Date: 2012-09-19
CHONGQING UNIV OF TECH
View PDF17 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although multi-directional die forging can forge complex-shaped forgings that cannot or are difficult to produce by other types of forging methods, no one has studied automobile steering knuckles by using multi-directional die forging precision forming technology

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
  • Precision die forging and shaping technical method for automobile steering knuckle rough type parts
  • Precision die forging and shaping technical method for automobile steering knuckle rough type parts
  • Precision die forging and shaping technical method for automobile steering knuckle rough type parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: 6700 Steering Knuckle Blank Precision Forging Process

[0038]After structural optimization, the precision forging process of 6700 steering knuckle blank is shown in Figure 1. Firstly, the 40Cr round steel with a diameter of 80 mm is cut by a band saw machine, and cut into a round bar with a length of 182 ± 2 mm as shown in Figure 1 (a). Then use a medium frequency induction heating furnace to heat the round bar to 1150±10°C. Put the heated round bar into the extrusion die. The diameter of the big end of the die is φ81mm, which is 1mm larger than the diameter of the bar, which is convenient for placing the bar. The diameter of the punch is the same as the diameter of the bar is φ80mm , the lower end of the die is the same as the optimized shape of the stem of the steering knuckle blank, and the bottom of the mold has a jacking device with the same diameter as the bottom end of the stem of the steering knuckle blank. After extrusion and elongation, a blank c...

Embodiment 2

[0039] Example 2: EQ153 Steering Knuckle Blank Precision Forging Process

[0040] After structural optimization, the precision forging process of the EQ153 steering knuckle blank is shown in Figure 3. First, use a band saw to cut 40Cr round steel with a diameter of 130 mm, and cut it into a round bar with a length of 185 ± 2 mm as shown in Figure 3 (a). Then use a medium frequency induction heating furnace to heat the round bar to 1160±10°C. Put the heated round bar into the extrusion die. The diameter of the big end of the die is φ132mm, which is 2mm larger than the diameter of the bar, which is convenient for placing the bar. The diameter of the punch is the same as the diameter of the bar is φ130mm , the lower end of the die is the same as the optimized shape of the stem of the steering knuckle blank, and the bottom of the mold has a jacking device with the same diameter as the bottom end of the stem of the steering knuckle blank. After extrusion and elongation, a blank c...

Embodiment 3

[0041] Example 3: SK1 Steering Knuckle Blank Precision Forging Process

[0042] After structural optimization, the precision forging process of SK1 steering knuckle blank is shown in Figure 5. The forging process is the same as the precision forging process of the 6700 steering knuckle blank in Example 1, except that the diameter and length of the raw material of the 40Cr round bar are different. The forged shape is different. In the process of multi-directional die forging, the plane shown by the arrow G shown in Figure 5(d) is used as the horizontal parting surface of the upper and lower dies, as shown in Figure 6 The parts where the middle arrows H and I are located and the parts where the arrows J and K are located are front and rear symmetrical in the middle as the vertical parting surface. Compared with the traditional upper and lower die forging SK1 steering knuckle blanks, the SK1 steering knuckle obtained by this precision die forging process has been optimized and...

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 provides a precision die forging and shaping technical method for automobile steering knuckle rough type parts. The precision die forging and shaping technical method mainly comprises the process steps of blanking, heating, extruding and drawing out a rod part, pre-forging, upsetting, performing material distribution and performing multi-way precision die forging and shaping and is specifically as follows: blanking through a cutting device, and heating to the temperature of 1080 DEG C-1180 DEG C in a medium-frequency induction furnace; placing a round bar which is well heated into a female die of an extruding and drawing-out die to form a stock comprising a cylindrical surface and a steering knuckle rough rod part; placing the stock after upsetting and material distribution into a multi-way die forging die, firstly enabling an upper male die and an upper die seat in the vertical direction to move downwards, and closing the upper male die and a lower female die for forging; and then using male dies on the symmetrical left side and right side in the horizontal direction to perform extrusion precision forging and shaping. According to the method provided by the invention, as the die forging is performed on a multi-way die forging hydraulic machine, the shaping speed is much lower than that of die forging on a hammer, thus the occurrence of the phenomenon of forming cracks on the surface due to strong speed sensitivity caused by too-high speed can be avoided; and the contact friction resistance between a forged piece and the surface of a die cavity during the processes of die forging, shaping and ejection of the forced piece can be greatly reduced, the surface quality of the forged piece is further improved, and the utilization rate of the material of the forged piece is improved.

Description

Technical field [0001] The present invention involves the precision mold forging processing process of the car's rough parts of the rough part of the car, which belongs to the field of plasticity and forming technology in metal materials. [0002] Background technique [0003] In recent years, with the rapid development of the machinery industry, especially the automotive industry and the intensification of international competition, the high -precision, high performance, high efficiency, low cost, and low energy consumption of automobile parts design and production process have become the competitiveness of product competitiveness.The only way.Steering Knuckle is one of the key parts of the car. As a safety piece, it supports the body weight of the car, but also transmits the steering torque and is to withstand the momentum of the front wheel brake. ThereforeHigh difficulty.The high complexity of the geometric shape of the car and the importance of the performance of the car det...

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): B21K7/12B21J5/02B21J1/06
Inventor 周志明唐丽文罗静胡洋张宝亮罗荣胡治姚照云
Owner CHONGQING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com