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Bidirectional turnup forming process for inner hole of material sheet

A technology for flanging forming and blanking, which is applied in the field of two-way flanging forming of inner holes of blanks, can solve the problems of large waste of raw materials, many processes, low production efficiency, etc., and achieves high production efficiency, high structural strength, and raw material saving. Effect

Active Publication Date: 2021-01-15
XIAMEN JIEXUN DRIVING WHEEL MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology can only be processed by traditional casting+turning, forging+turning, seamless pipe turning and other processes. These processes have many procedures, large waste of raw materials, and low production efficiency.

Method used

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  • Bidirectional turnup forming process for inner hole of material sheet
  • Bidirectional turnup forming process for inner hole of material sheet
  • Bidirectional turnup forming process for inner hole of material sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In the two-way flanging forming equipment for the inner hole of the blank, the axial diameter of the pressure roller 21 is consistent. In the initial state, the pressure roller 21 is located in the first rotating shaft 11, and the first rotating shaft 11 and the second rotating shaft 12 are separated. The processing process is as follows:

[0056] Step 1: Place the tablet 3 with the inner hole in the third recess 122 of the second rotating shaft 12;

[0057] Step 2: The second rotating shaft 12 moves to cooperate with the first rotating shaft 11 to press the tablet 3;

[0058] Step 3: the pressure roller 21 moves axially, and the convex part of the pressure roller 21 passes through the inner hole of the tablet 3;

[0059] Step 4: The first rotating shaft 11 and the second rotating shaft 12 rotate coaxially, in the same direction and at the same speed, and then drive the tablet 3 to rotate together;

[0060] Step 5: The pressure roller 21 moves radially, the pressure r...

Embodiment 2

[0065] In the two-way flanging forming equipment for the inner hole of the tablet used, the pressure roller 21 is provided with a first convex portion and a second convex portion with different diameters at both ends along the axial direction. The diameter of the first convex portion is smaller than that of the second convex portion. In the initial state, the pressure roller 21 is located in the first rotating shaft 11, and the first rotating shaft 11 and the second rotating shaft 12 are separated, and the processing process is as follows:

[0066] Step 1: Place the tablet 3 with the inner hole in the third recess 122 of the second rotating shaft 12 to form the first position;

[0067] Step 2: The second rotating shaft 12 moves to cooperate with the first rotating shaft 11 to press the tablet 3 to form a second position;

[0068] Step 3: the pressure roller 21 moves axially, and the first protrusion of the pressure roller 21 passes through the inner hole of the sheet 3 to form...

Embodiment 3

[0075] The equipment used in embodiment three is the same as that of embodiment two, and the process is as follows:

[0076] Step 1: Place the tablet 3 with the inner hole in the third recess 122 of the second rotating shaft 12;

[0077] Step 2: The second rotating shaft 12 moves to cooperate with the first rotating shaft 11 to press the tablet 3;

[0078] Step 3: the pressure roller 21 moves axially, and the first protrusion of the pressure roller 21 passes through the inner hole of the sheet 3;

[0079] Step 4: The first rotating shaft 11 and the second rotating shaft 12 rotate coaxially, in the same direction and at the same speed, and then drive the tablet 3 to rotate together;

[0080] Step 5: The pressure roller 21 moves radially, the first convex part of the pressure roller 21 contacts with the wall of the inner hole of the tablet 3, and rubs against each other, the pressure roller 21 rotates, and as the radial movement increases, the pressure roller 21 is opposite to ...

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Abstract

The invention discloses a bidirectional turnup forming process for an inner hole of a material sheet. The forming process comprises the following steps: driving the material sheet with the inner holeto rotate by using a female die provided with a concave part for accommodating a turnup, extruding the wall of the inner hole of the material sheet from the inner hole of the material sheet by using amale die capable of moving in a radial direction, and embedding the extruded part of the material sheet into the concave part to form turnups in two directions. By using the forming process, the production efficiency is high, the yield is high, the finished product quality is good, the production cost is low, the whole technological process is cold forming, heating forging is not needed, weldingis avoided, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to a material sheet forming process, in particular to a material sheet inner hole bidirectional flanging forming process. Background technique [0002] The development of modern industry is moving in the direction of light weight and intensification. Due to the structural characteristics of the "⊥-like" rotary section, it has many advantages such as light weight and high strength. In industrial design, especially rotary zero Widely used in component design. However, the existing technology can only rely on the traditional casting + turning, forging + turning, seamless tube turning and other processes. These processes have many procedures, waste of raw materials, and low production efficiency. Contents of the invention [0003] The purpose of the present invention is to solve certain defects or problems existing in the background technology, and to provide a bidirectional flanging forming process for the inner hole of a material...

Claims

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Application Information

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IPC IPC(8): B21D35/00
CPCB21D35/002
Inventor 吴海航王建中郑建平黄熠藩林东辉林智玮江永彬
Owner XIAMEN JIEXUN DRIVING WHEEL MACHINERY CO LTD