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Upsetting method and upsetting device

A processing method and processing device technology, applied in metal processing equipment, engine components, mechanical equipment, etc., can solve problems such as poor, wrinkled surface properties, etc.

Inactive Publication Date: 2011-12-07
RESONAC HOLDINGS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, there is also a problem that although the bulge is bent, the bulge itself is not bent but the neck between the bulge and the shaft is bent, or the inner peripheral surface on the curved side of the bulge is bent. Poor surface properties due to wrinkling

Method used

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  • Upsetting method and upsetting device
  • Upsetting method and upsetting device
  • Upsetting method and upsetting device

Examples

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Embodiment Construction

[0235] Next, several embodiments of the present invention will be described with reference to the drawings.

[0236] Figure 1 to Figure 5 It is a figure for demonstrating 1st Embodiment of this invention.

[0237] exist figure 1 Among them, 10A is the upset processing device according to the first embodiment. The upsetting device 10A is a free upsetting device in detail. In addition, 1 is a rod-shaped blank.

[0238] exist Figure 5 Among them, 5 is an upset processed product processed by the upset processing apparatus 10A. In this upset-forged product 5 , bulged portions 6 (diameter-enlarged portions) bulging (diameter-enlarged) outward in the radial direction over the entire circumference are formed at both ends of the straight shaft portion 7 . Each bulge 6 is bent in the axial direction. To describe in detail, the bulging portion 6 itself is bent, and the bulging portion 6 bulges unevenly in the circumferential direction. In more detail, the bulging amount of the ...

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Abstract

Provided is an upsetting method capable of producing an upset-forged product in which a bulging portion has a curved shape with as low a load as possible. The rod-shaped blank (1) is installed on the receiving mold (11) in a state of preventing movement in the axial direction, and the bulging part (2) of the blank (1) is arranged in the insertion hole (21). Holes are provided on the guide body (20) to insert and hold the bulged portion (2) of the blank (1) in a state where longitudinal bending is prevented. Next, press the bulging part (2) of the blank (1) in the axial direction with the punch (30), and move the guide body (20) to the direction opposite to the moving direction of the punch (30). The part (2) to bulge of the blank (1) exposed between the front end portion of the guide body (20) and the receiving mold (11) bulges outward in the radial direction. In this upsetting method, the part to be bulged (2) of the blank (1) is bent while the part to be bulged (2) is bulged.

Description

technical field [0001] The present invention relates to an upsetting method and an upsetting device used for manufacturing a vehicle (automobile, rail vehicle, etc.) bracket, piston, or other product having a bulging portion bulged outward in the radial direction. Background technique [0002] Generally, in the upsetting process, if the bar-shaped blank is longitudinally bent during processing, the upset-forged product becomes defective in shape and loses its value as a product. Then, in order to make buckling less likely to occur, conventionally, the following upsetting method has been proposed. [0003] That is, the rod-shaped blank is installed on the receiving mold in a state of being prevented from moving in the axial direction, and the part to be bulged (that is, the part to be processed) of the blank is inserted into the insertion hole provided on the guide body to The expected bulging portion is kept in a vertical bending prevention state. Next, while pressing the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/08B21K1/12
CPCB21J5/08
Inventor 大泷笃史
Owner RESONAC HOLDINGS CORPORATION
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