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Drawing and rolling combined type multi-plate continuous forming method for variable-section plate springs

A variable-section, leaf spring technology, applied in the field of metal processing, can solve the problems of large end cutting loss and low production efficiency, and achieve the effects of improving production efficiency, reducing end cutting loss and improving economic benefits.

Active Publication Date: 2017-06-30
NORTHEASTERN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The production efficiency of the above two processes is low and the end cutting loss is large

Method used

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  • Drawing and rolling combined type multi-plate continuous forming method for variable-section plate springs
  • Drawing and rolling combined type multi-plate continuous forming method for variable-section plate springs
  • Drawing and rolling combined type multi-plate continuous forming method for variable-section plate springs

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings. The steps of the present invention are as follows:

[0016] Blanking: Multi-piece combined cutting method is adopted, the length of sheet 1 is n times the length of single sheet, and the specific size is calculated according to the principle of constant volume;

[0017] Heating of n-0.5 pieces at the rear end: heating one end of the plate, the heating length is n-0.5 plate spring plate length, and the heating temperature is 800-950°C;

[0018] Rolling of n-0.5 sheets at the rear end: place the unheated section of the sheet material 1 at the front, send it into the variable-section rolling mill 2, and reach the drawing machine 3. The drawing machine 3 clamps the sheet and starts to move forward. At the same time, the variable-section rolling mill 2 Adjust the roll gap in real time according to the set curve, the rolling process is as follows figure 2 shown;

[0019]...

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Abstract

The invention relates to a drawing and rolling combined type multi-plate continuous forming method for variable-section plate springs. According to the drawing and rolling combined type multi-plate continuous forming method, the manner that one raw material is continuously rolled into multiple variable-section plate springs is adopted, a flat steel product raw material of n times of length is heated and fed into a variable-section rolling machine, a drawing machine clamps the flat steel product raw material and applies tension to the flat steel product raw material at the front end, under the combined action of the tension and the rolling force, variable-section rolling of the n-0.5 plate springs at the back end is completed firstly, and then the remaining 0.5 plate spring is rolled. By the adoption of the drawing and rolling combined type multi-plate continuous forming method for the variable-section plate springs, the production efficiency can be significantly improved, the end cut loss can be reduced, and the yield can be improved; and in this way, the production cost is reduced, and economic benefits are increased.

Description

technical field [0001] The invention belongs to the field of metal processing, in particular to the field of a drawing-rolling combined multi-piece forming method for variable-section leaf springs. Background technique [0002] Leaf spring is an elastic element commonly used in vehicle suspension systems. It is generally composed of several pieces of flat steel of equal width to form an approximate equal-strength beam. It has many advantages such as simple structure and good stability. The traditional multi-piece constant-section leaf spring is generally composed of 5 to 8 pieces of equal-section flat steel with different lengths, and the storage energy per unit weight is low. To this end, the researchers designed a small number of variable-section leaf springs, which generally consist of 1 to 4 pieces of approximately equal-length variable-section flat steel, which can reduce weight by more than 30% compared with multiple equal-section leaf springs. In recent years, the ap...

Claims

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Application Information

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IPC IPC(8): B23P13/00
CPCB23P13/00
Inventor 刘相华付书涛胡贤磊黄宝祥王想洪羽晨
Owner NORTHEASTERN UNIV
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