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Multi-direction forging die for crankshaft forging and its forming method

A multi-directional die forging and forming die technology, which is applied in the direction of manufacturing tools, engine components, forging/pressing/hammer devices, etc., to achieve the effect of reducing machining amount, reducing cost and high precision

Active Publication Date: 2017-02-22
22MCC GRP PRECISION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing crankshaft forging processing methods, and provide a multi-directional die forging forming method for crankshaft forgings, so as to solve the problem of forming small and medium-sized crankshafts by multi-directional die forging methods, and simultaneously form each corner to ensure that each corner The problem of the degree and the distance between the turns

Method used

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  • Multi-direction forging die for crankshaft forging and its forming method
  • Multi-direction forging die for crankshaft forging and its forming method
  • Multi-direction forging die for crankshaft forging and its forming method

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying examples, but the examples do not constitute any limitation to the present invention.

[0037] A multi-directional die forging forming die for a crankshaft forging. The pre-forging die and the final forging die are composed of a crank throw cavity in the middle and cavities corresponding to the crank throws on both sides of the crankshaft.

[0038] see Figure 1 to Figure 6 , the pre-forging die and the final forging die respectively include: baffle plate 1, horizontal cylinder 2, horizontal punch 3, lower die 4, blank 5, upper die 6, upper die upper backing plate 7, moving beam 8, vertical cylinder 9, Support plate 10, inclined wedge 11, inclined punch 12, spring 13;

[0039] Among them, the baffle plate 1 is arranged on the lower left side of the support plate 10, the support plate 10 is connected with the vertical cylinder 9; the horizontal punch 3 is connected with the horizo...

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Abstract

The invention relates to a crankshaft forging forming die and a forming method thereof, in particular to a crankshaft forging multidirectional forging forming die and a forming method thereof. Using pre-forging dies and final forging dies with a bellcrank cavity in the middle and bell cavities on both sides, the blank is first prepared into a pre-forging blank, and then the pre-forging blank is placed in the cavity of the final forging mold for final forging , and finally the multi-directional crankshaft is formed in the mold. The multi-directional crankshaft formed by the invention has high precision between the turns, reduces the amount of machining, shortens the working hours of machining, and reduces the cost.

Description

technical field [0001] The invention relates to a crankshaft forging forming die and a forming method thereof, in particular to a crankshaft forging multidirectional forging forming die and a forming method thereof. Background technique [0002] At present, there are generally three forming methods for small and medium-sized crankshafts, namely, die forging, DTR method, and NTR method. During die forging, each turn of the crankshaft is formed at the same time, but there are flashes on the parting surface. However, the weight of the blank is large, and the flash weight accounts for about 20%, which increases the cost of materials. The NTR method and the DTR method form one turn each time, and then perform local heating on the blank formed by the next turn, and then rotate the blank to form the next turn. These two forming methods have less flash, but the accuracy of the distance between the turns is poor. The large crankshaft adopts the assembly type, and each crank is for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J13/02B21K1/08B21J5/02
CPCB21J5/02B21J13/02B21K1/08
Inventor 赵文成代勇
Owner 22MCC GRP PRECISION FORGING