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

Method of cold-heading valve spring seat by five-process puncher

A valve spring and punching technology, which is applied in the field of five-process cold heading valve spring seat of punching machine, can solve the problems of deformation resistance and insufficient die strength, achieve stable and reliable production quality, improve economic value and obvious economic benefits.

Inactive Publication Date: 2003-10-15
龙永绥
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To popularize and apply cold heading technology, it is necessary to solve the contradiction between deformation resistance and insufficient mold strength. The five-process punch cold heading valve spring seat technology of the present invention effectively solves the above contradiction

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
  • Method of cold-heading valve spring seat by five-process puncher
  • Method of cold-heading valve spring seat by five-process puncher
  • Method of cold-heading valve spring seat by five-process puncher

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0040] Taking the processing of the spring seat of Changan minicar as an example, the specific implementation is as follows:

[0041] 1. Change the diameter of the driving wheel of the motor and adjust the speed of the punch to 20-25 times per minute;

[0042] 2. Selection and treatment of mold materials: The mold is made of 65 niobium (Ni) matrix steel, which is quenched at a high temperature of 1050-1150℃ to make the hardness reach HRC58-60; then it is tempered at 500-600℃ and nitrided at 500-550℃ Afterwards, it is made into a shearing die, an extrusion die, a concave die and a punch.

[0043] 3. The process flow of the present invention is as follows figure 2 Shown.

[0044] First, select a round steel with a diameter of 18mm, and use shear molding to obtain the blank; then, the sheared blank is annealed and phosphating; the annealing uses a special annealing furnace as shown in Figure 3. The special annealing furnace includes an outer cover 1 , Resistance wire 2, inner cover 3...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The five-step making process of valve spring seat includes making blank in punch; annealing and phosphorizing; shaping in extruding mold, eliminating burr, crack and angle in lathe and re-phosphorizing; extruding hole in mold with punch; punching hole in punch, annealing and phosphorizing; and extruding to form in extruding mold with lubricating oil with punch. The present invention has reduced deforming resistance, increased mold strength and several times increased mold service life. The present invention may be used in large-scale production.

Description

Technical field [0001] The invention relates to a five-step cold forging valve spring seat method of a punch press, and belongs to the technical field of mechanical manufacturing. Background technique [0002] For decades, my country’s traditional methods of manufacturing valve spring seats have been mainly turning processing, such as figure 1 As shown, because the car will consume 70% of the material to go to the steps, the inner hole, and the cut, the material utilization rate is only 30%. Due to its multi-step appearance, high-precision inner cone hole and small diameter, it has disadvantages such as extremely difficult processing and low production efficiency. In addition, the "valve spring seat cold forming" published in "Forging Technology" 95(2)14-16 introduces the method of processing automobile valve spring seat using cold forging machine blanks and press forming technology. Since the cold forging machine is a continuous operation, the workpiece W...

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): B21D53/00
Inventor 龙永绥
Owner 龙永绥