CN202192200U

CN202192200U - Shaft forging die

Info

Publication number: CN202192200U
Application number: CN2011202621060U
Authority: CN
Inventors: 赵林华; 沈炎
Original assignee: JIANGYIN CITY LIAOYUAN FORGING CASTING CO Ltd
Current assignee: JIANGYIN CITY LIAOYUAN FORGING CASTING CO Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-04-18
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses a shaft forging die, which is a split structure. The split structure comprises a die holder and an annular ring arranged on the die holder, an inner hole of the die holder is larger than a shaft end of a shaft blank by more than 8%, a cavity corresponding to the neck of the shaft blank is arranged at the top end of the annular ring, a transition hole penetrating through the annular ring is arranged at the bottom of the cavity and is higher than the cavity by more than 30%, and the transition hole is a conical hole with a wide upper edge opening and a narrow lower edge opening. As the inner hole of the die holder is larger than the shaft end of the blank, the shaft end of the blank does not contact with the die holder assuredly, secondary heating is omitted, forging quality of a shaft is guaranteed, and energy is saved. The die holder and the annular ring are separate so as to bring convenience for operation, operating efficiency is improved, and the shaft forging die can be released quite conveniently when a flange head is forged by the aid of the transition hole. In addition, the transition hole is the conical hole, so that the shaft forging die can be released more conveniently.

Description

The forging die of a kind of class part

Technical field

The utility model relates to forge die, is specifically related to the forging die of a kind of class part.

Background technology

At present, the flange head of the rotating shaft end of wind-driven generator is with axle and forges the integrative-structure that forms, and people are referred to as the wind-powered electricity generation axle, and wherein, the radial dimension of flange head differs the comparison great disparity with the radial dimension of axle, reaches 12.5 usually.Traditional forging method the steps include: first ejection, and it is thick with the flange head pier to put into mould then; Then mould is stood up mould is placed on the cushion block and put into demoulding cushion block from axle head forging and mould are thrown off; Take out blank then, manipulator is clamped axle head flange head is thrown circle, after turning around again; Manipulator is clamped the flange head of being thrown circle and axle head is forged again, and makes it to reach to forge to require size.Adopt this traditional forging die to forge, major defect has:

1, because the wind-powered electricity generation forging shaft belongs to large forgings, weigh 13.5 tons, the weight of forging die that is used to forge this forging is heavier; About more than 30 tons, make that in forging process it is very heavy and a bother thing that the mould that blank is housed is stood up; Labour intensity is big, inefficiency;

2, after the axle head after the ejection inserts mould; In to the thick process of flange head pier; The blank axle head contacts rapidly cooling with mould inner wall, so that do not reach forging temperature after the demoulding, make and can't normally forge axle head after the blank demoulding; After must post bake, could forge axle head after reaching forging temperature; But after the post bake, can produce the coarse-grain phenomenon, cause the forging quality to descend, wind-powered electricity generation shaft mechanical performance had considerable influence, the performance requirement in the time of can't reaching design.

The utility model content

The purpose of the utility model is to overcome the defective that exists in the prior art, provides a kind of and can reduce labor intensity, increase work efficiency and without the forging die of the axle type part of post bake.

For realizing above-mentioned purpose; The technical scheme of the utility model is the forging die of a kind of class part of design; It is characterized in that described forging die is for dividing body structure, body structure comprised die holder and was arranged on the annular ring on the die holder in said minute; The axle head of the interior boring ratio axle class part material base of said die holder is big more than 8%; Offer and a corresponding die cavity of neck of type part material base on the top of annular ring, offer the transitional pore that connects annular ring in the bottom of said die cavity, the height of the said die cavity of aspect ratio of said transitional pore is high more than 30%.

Wherein optimized technical scheme is, said transitional pore is the wide narrow bellmouth of bead down of upper edge hole.

The advantage and the beneficial effect of the utility model are: because the interior boring ratio blank axle head of die holder is big, has guaranteed that the blank axle head does not contact with die holder, thereby do not needed post bake, both guaranteed the forging quality of axle type part, saved the energy again; And die holder and annular ring split greatly facilitate operation, have reduced labour intensity, have improved operating efficiency; The setting of transitional pore has then guaranteed when forging flange head, can not form accumulation by bead in the bottom of annular ring, greatly facilitates normally carrying out of the demoulding.In addition, transitional pore is arranged to bellmouth, has further facilitated the demoulding.

Description of drawings

Fig. 1 is the structural representation of the utility model axle class part forging die.

Among the figure: 1, die holder; 11, endoporus; 12, hanger; 2, annular ring; 21, die cavity; 22, transitional pore.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection domain of the utility model with this.

As shown in Figure 1; The utility model is the forging die of a kind of class part, specifically is a kind of forging die of wind-powered electricity generation axle, and this forging die is a split-type structural; Comprise: die holder 1 with overlay the annular ring 2 on the die holder 1; The endoporus 11 of die holder 1 is bigger by 8～10% than the axle head of wind-powered electricity generation axle material base, and the middle part of the outer wall of die holder 1 circumferentially evenly is provided with four hangers 12, offers on the top of annular ring 2 and the corresponding die cavity 21 of the neck of wind-powered electricity generation axle material base; Offer the transitional pore 22 that connects annular ring 2 in the bottom of this die cavity 21; This transitional pore 22 is the wide narrow bellmouth of bead down of upper edge hole, and the height of the said die cavity 21 of the aspect ratio of transitional pore 22 is high more than 30%, common 1.5 times of the height of transitional pore 22 being arranged to die cavity 21 height.

Adopt above-mentioned forging die to be: annular ring 2 to be overlayed on the die holder 1, wind-powered electricity generation shaft flange head is forged slightly, reach radially required size of wind-powered electricity generation shaft flange head with the course of work that the wind-powered electricity generation axis blank forges into forging; Hang out blank and annular ring 2 then, hang away die holder 1, with blank and annular ring 2 traverses, manipulator is clamped the blank axle head; Push down annular ring 2 with anvil about the press, manipulator is done rotation and is moved forward, makes blank separate with annular ring 2; And the wind-powered electricity generation axle has been forged thick flange head carried out radial direction throwing circle, make it radially consistent size all around, then tune; Manipulator is clamped the flange head of moulding, and the blank axle head is forged, and makes it to meet the forging required size.Because the blank axle head does not contact with mould, blank temperature does not sharply descend, and satisfies forging temperature fully.Like this, both satisfied the diffusing thick requirement of wind-powered electricity generation shaft flange head, and avoided post bake again, and practiced thrift the energy, the flange head after having the most important thing is to stop to forge has slightly improved the inherent quality of forging greatly owing to the coarse-grain phenomenon that post bake produces.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims

1. the forging die of an axle class part; It is characterized in that described forging die is for dividing body structure, body structure comprised die holder and was arranged on the annular ring on the die holder in said minute; The axle head of the interior boring ratio axle class part material base of said die holder is big more than 8%; Offer and a corresponding die cavity of neck of type part material base on the top of annular ring, offer the transitional pore that connects annular ring in the bottom of said die cavity, the height of the said die cavity of aspect ratio of said transitional pore is high more than 30%.

2. the forging die of axle type part as claimed in claim 1 is characterized in that, said transitional pore is the wide narrow bellmouth of bead down of upper edge hole.