CN204135261U - A kind of forging mold of one-throw crankshaft - Google Patents

A kind of forging mold of one-throw crankshaft Download PDF

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Publication number
CN204135261U
CN204135261U CN201420574223.4U CN201420574223U CN204135261U CN 204135261 U CN204135261 U CN 204135261U CN 201420574223 U CN201420574223 U CN 201420574223U CN 204135261 U CN204135261 U CN 204135261U
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China
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forging
throw crankshaft
bending
die
extruding
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CN201420574223.4U
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徐春国
陈钰金
任伟伟
郭永强
郑建
任广升
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HAIXI INSTITUTE CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY
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HAIXI INSTITUTE CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY
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Abstract

A kind of forging mold of one-throw crankshaft, comprise bending die and extrusion die, described bending die comprises bending patrix and bending counterdie, the die cavity at bending die two ends and the input of one-throw crankshaft forging and the geomery of output suitable, the connecting rod neck body fit of bent intermediate shape and size and one-throw crankshaft forging; Described extrusion die comprises extruding patrix, extruding counterdie, left drift, right drift, the center of extrusion die overlaps with the three-dimensional hydraulic press centre of percussion, and the geomery that described left and right drift forms near closed hollow ring with the upper and lower mould of extruding is one-throw crankshaft net shape size.The beneficial effects of the utility model are: it adopts the mode of Closed Extrusion, and achieve non-trimming forging and molding, stock utilization is high, and shortens forging process, steady quality, achieves " near-net-shape ".

Description

A kind of forging mold of one-throw crankshaft
Technical field
The utility model relates to mould applications, is specifically related to a kind of forging mold of one-throw crankshaft.
Background technology
One-throw crankshaft is the core component of small general dynamic engineering goods, annual production the developing rapidly and steady growth also along with general dynamic machinery industry of one-throw crankshaft.One-throw crankshaft is operationally stressed large and complicated, and bears the percussion of stress alternation, is simultaneously again high-speed rotary turntable, therefore requires that bent axle has enough Rigidity and strengths, have the ability of the good load that withstands shocks, wear-resistant and lubrication is good.Therefore Forging Technology manufacture order is mainly adopted to turn crank shaft blank.
The production technology of domestic one-throw crankshaft is mainly die forging, first by punch press jumping-up mid portion after blank heating, clap flat rear open die forging operation pulling bar portion, two ends and carry out base, next in mold cavity, blocking, finish-forging operation is completed, finally carry out trimming, because blocking and finish-forging adopt the parting of open type forging, there is overlap in forging one-throw crankshaft forging out all the time.Forging overlap is along the distribution of workpiece surrounding and weight is comparatively large, causes raw-material waste.
It is long that traditional one-throw crankshaft forging production technique also exists production process, product quality is relatively poor, production environment is severe and stock utilization is low, particularly open die forging preforming relies on high deficiency to workman's technology, cannot meet the demand for development of current forging industry " near-net-shape " and " green forging ".
Utility model content
The utility model, for the problems referred to above, provides a kind of forging mold of one-throw crankshaft, and can realize one-throw crankshaft forging enclosed non-trimming and be shaped, and production process is short, the degree of dependence of product quality to operator is low.
The utility model for the technical scheme reaching above-mentioned technical purpose and adopt is: a kind of forging mold of one-throw crankshaft, comprise bending die and extrusion die, bending die comprises bending patrix and bending counterdie, the die cavity at bending die two ends and the input of one-throw crankshaft forging and the geomery of outlet end part suitable, the connecting rod neck body fit of bent intermediate shape and size and one-throw crankshaft forging, there is locating piece press-bending counterdie one end in order to determine blank left and right position; Extrusion die comprises extruding patrix, extruding counterdie, left drift, right drift, and the center of extrusion die overlaps with the three-dimensional hydraulic press centre of percussion, and it is one-throw crankshaft net shape size that left and right drift forms near closed hollow ring geomery with the upper and lower mould of extruding.
The upper and lower mould of described extruding close cavity that rear left and right both sides are formed and the guide head of left and right drift suitable, its fit clearance is 0.1mm-0.5mm.
The upper and lower mould of described extruding is provided with upper and lower insert, and upper and lower insert is respectively provided with required die cavity.
Left drift, right punch-center are provided with air-vent.
The beneficial effects of the utility model are: it adopts the mode of Closed Extrusion, and achieve non-trimming forging and molding, stock utilization is high, and shortens forging process, steady quality, achieves " near-net-shape ".
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.Wherein:
Fig. 1 is the structural representation of the rough forging of one-throw crankshaft;
Fig. 2 is design of bending die schematic diagram described in the utility model;
Fig. 3 is extrusion die structural representation described in the utility model.
Marker number in accompanying drawing is described as follows: input 1, connecting rod neck 2, output 3, balance weight 4, bending patrix 5, bending counterdie 6, locating piece 7, left drift 8, extruding patrix 9, upper insert 10, right drift 11, extruding counterdie 12, lower insert 13, air-vent 14.
Detailed description of the invention
Embodiment of the present utility model, is shown in Fig. 1 ~ Fig. 3,
A kind of forging mold of one-throw crankshaft, comprise bending die and extrusion die, bending die comprises bending patrix 5 and bending counterdie 6, the geomery of the die cavity at bending die two ends and the input 1 of one-throw crankshaft forging and output 3 part is suitable, connecting rod neck 2 body fit of bent intermediate shape and size and one-throw crankshaft forging, there is locating piece 7 press-bending counterdie one end in order to determine blank left and right position; Extrusion die comprises extruding patrix 9, extruding counterdie 12, left drift 8, right drift 11, the center of extrusion die overlaps with the three-dimensional hydraulic press centre of percussion, and it is one-throw crankshaft net shape size that left and right drift 8,11 and the upper and lower mould 9,12 of extruding form near closed hollow ring geomery.
The guide head of the cavity that the closed rear left and right both sides of the upper and lower mould of described extruding 9,12 are formed and left and right drift 8,11 is suitable, and its fit clearance is 0.1mm-0.5mm.
The upper and lower mould of described extruding 9,12 is provided with upper and lower insert 10,13, and upper and lower insert 10,13 is respectively provided with required die cavity.
Left drift 8, right drift 11 center are provided with air-vent 14.
The manufacturing process of one-throw crankshaft forging: first pass through bending die, the mid portion of step-like blank is bent, realize the material shifts of one-throw crankshaft connecting rod neck 2 part, the input 1 of the shape at blank two ends and size and one-throw crankshaft and the suitable of output 3, this partial shape size remains unchanged when bending.Again by upper and lower mould 9,12 matched moulds of extruding, fixed by the blank after bending, and form the die cavity passage of drift horizontal movement, left and right drift 8,11 is simultaneously toward middle extruding, and the final near closed hollow ring that formed completes extruding, obtains the one-throw crankshaft forging of non-trimming.
The forging mold of a kind of one-throw crankshaft of the utility model, separates press-bending operation and extrusion process, convenient control metal flow, and simplifies mould structure; There is locating piece 7 press-bending counterdie one end to determine blank left and right position, the stability that the blank that improve balance weight 4 distributes and uniformity; Extrude upper and lower mould 9,12 and adopt insert structure, to reduce mould consumption, be convenient for changing mould; Left and right drift 8,11 moves horizontally in the die cavity of the upper and lower mould 9,12 of extruding, the contouring head shape of left and right drift 8,11 and balance weight 4 cross sectional shape of one-throw crankshaft suitable, its guide head is 0.1mm-0.5mm with the one-sided gap of the die cavity that the upper and lower mould 9,12 of extruding is formed, and guarantees the generation of drift stable and smooth operation, centering and minimizing extruding burr.The final position that left and right drift 8,11 and the upper and lower mould 9,12 of extruding have rigid contact surfaces to move horizontally as left and right drift 8,11, and left and right drift 8,11 center is provided with air-vent 14, improve uniformity and the Packing character of forging balance weight 4 thickness.
Above are only a detailed description of the invention of the present utility model, but design concept of the present utility model is not limited thereto, all changes utilizing this design the utility model to be carried out to unsubstantiality, all should belong to the behavior of invading the utility model protection domain.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.

Claims (5)

1. the forging mold of an one-throw crankshaft, it is characterized in that: comprise bending die and extrusion die, described bending die comprises bending patrix and bending counterdie, the die cavity at bending die two ends and the input of one-throw crankshaft forging and the geomery of output suitable, the connecting rod neck body fit of bent intermediate shape and size and one-throw crankshaft forging; Described extrusion die comprises extruding patrix, extruding counterdie, left drift, right drift, the center of extrusion die overlaps with the three-dimensional hydraulic press centre of percussion, and the geomery that described left and right drift forms near closed hollow ring with the upper and lower mould of extruding is one-throw crankshaft net shape size.
2. the forging mold of a kind of one-throw crankshaft according to claim 1, is characterized in that: the guide head that the upper and lower mould of described extruding closes cavity that rear left and right both sides are formed and left and right drift is suitable, and its fit clearance is 0.1mm-0.5mm.
3. a kind of forging mold of one-throw crankshaft according to claim 1 or 2, is characterized in that: the upper and lower mould of described extruding is provided with upper and lower insert, and upper and lower insert is respectively provided with required die cavity.
4. the forging mold of a kind of one-throw crankshaft according to claim 1, is characterized in that: described left and right punch-center is provided with air-vent.
5. the forging mold of a kind of one-throw crankshaft according to claim 1, is characterized in that: described press-bending counterdie one end is provided with locating piece.
CN201420574223.4U 2014-09-30 2014-09-30 A kind of forging mold of one-throw crankshaft Active CN204135261U (en)

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Application Number Priority Date Filing Date Title
CN201420574223.4U CN204135261U (en) 2014-09-30 2014-09-30 A kind of forging mold of one-throw crankshaft

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382173A (en) * 2015-11-27 2016-03-09 昆山惠众机电有限公司 Forging technology for gear transmission head with rod part
CN106914581A (en) * 2017-03-16 2017-07-04 燕山大学 A kind of full-fibre crankshaft multi-ram forging method and mould
CN111036814A (en) * 2019-12-20 2020-04-21 哈尔滨工业大学(威海) Special-shaped multi-way joint multi-way flexible loading integral forming device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382173A (en) * 2015-11-27 2016-03-09 昆山惠众机电有限公司 Forging technology for gear transmission head with rod part
CN105382173B (en) * 2015-11-27 2018-05-25 昆山惠众机电有限公司 A kind of gear drive head forging technology with bar portion
CN106914581A (en) * 2017-03-16 2017-07-04 燕山大学 A kind of full-fibre crankshaft multi-ram forging method and mould
CN111036814A (en) * 2019-12-20 2020-04-21 哈尔滨工业大学(威海) Special-shaped multi-way joint multi-way flexible loading integral forming device and method
CN111036814B (en) * 2019-12-20 2021-07-06 哈尔滨工业大学(威海) Special-shaped multi-way joint multi-way flexible loading integral forming device and method

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