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Machining technology for annular steel belts

A processing technology, a technology of endless steel strips, applied in the direction of metal rolling, etc., can solve the problems of reworked materials, low product qualification rate, waste, etc., and achieve the effect of improving production efficiency, simple control method, and improving qualification rate

Inactive Publication Date: 2014-11-19
权明勇
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AI Technical Summary

Problems solved by technology

[0002] At present, in the automotive industry, the steel belts used in continuously variable transmissions are usually welded with thick steel belts and then cold-pressed or hot-pressed to make the steel belts thinner to produce the required endless steel belts; in this process, Because the steel strip is thinned by cold pressing or hot pressing, the steel strip reaches the required circumference. However, since the circumference of the endless steel belt is constantly changing during cold pressing or hot pressing, it is difficult to precisely control the circumference. Very high, resulting in a high ratio of the circumference size of the processed endless steel belt not reaching the target size, resulting in rework or material waste, especially in mass production, the product qualification rate is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Taking stainless steel as an example:

[0032] Step 1. Select the appropriate stainless steel material;

[0033] Step 2. Use the method of stamping and stretching to make the stainless steel material into a rough steel pipe; the thickness of the pipe is controlled 0.4mm ;The inner diameter is 75mm;

[0034] Step 3. Select a core rod with an outer diameter of 75mm, and insert the blank steel pipe on the core rod of the spinning machine;

[0035] Step 4: Start the spinning machine, make the spinning mandrel rotate at high speed, drive the spinning roller knife to move up and down along the blank tube, and stretch the blank tube, so that the thickness of the blank tube becomes thinner and the length becomes longer;

[0036] Step 5. Observe the thickness, length and inner diameter of the blank tube after being lengthened in step 4. When the thickness of the blank tube reaches 0.1mm, the length after stretching is about 4 times the length of the original blan...

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Abstract

The invention discloses a machining technology for annular steel belts. According to the machining technology for the annular steel belts, a spinning method is utilized for machining the annular steel belts, a method for matching the outer diameter of a machine core rod with the inner diameter of a steel tube is adopted for determining the perimeter of the steel tube, and the control method is simple. Compared with a traditional method, the perimeter can be accurately controlled, and the product yield can be improved; after spinning of one tube is successful, different steel belts can be obtained through cutting according to the requirements for different widths, and production efficiency of the annular steel belt is conveniently improved.

Description

technical field [0001] The invention relates to a processing technology, in particular to a processing technology specially used for an endless steel belt of a continuously variable transmission. Background technique [0002] At present, in the automotive industry, the steel belts used in continuously variable transmissions are usually welded with thick steel belts and then cold-pressed or hot-pressed to make the steel belts thinner to produce the required endless steel belts; in this process, Because the steel strip is thinned by cold pressing or hot pressing, the steel strip reaches the required circumference. However, since the circumference of the endless steel belt is constantly changing during cold pressing or hot pressing, it is difficult to precisely control the circumference. Very high, resulting in a high ratio of the circumference of the processed endless steel belt not reaching the target size, resulting in rework or material waste, especially in mass production,...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB21B5/00B21D22/14B21C37/06
Inventor 权明勇
Owner 权明勇
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