CN202290824U

CN202290824U - Cold extruding mechanism

Info

Publication number: CN202290824U
Application number: CN2011204067657U
Authority: CN
Inventors: 蒋浩
Original assignee: CHANGSHU JINHUA MECHANICAL Co Ltd
Current assignee: CHANGSHU JINHUA MECHANICAL Co Ltd
Priority date: 2011-10-24
Filing date: 2011-10-24
Publication date: 2012-07-04
Anticipated expiration: 2021-10-24

Abstract

The utility model provides a cold extruding mechanism which comprises an oil press and a mould. The cold extruding mechanism is characterized in that the mould comprises an upper mould and a lower mould, wherein the upper mould is arranged on an upper working platform of the oil press, the lower mould is arranged on a lower working platform of the oil press, the upper mould and the lower mould are provided with mould cavities which are matched with a shaft, a shaft to be manufactured is placed in the mould cavity of the lower mould, the upper working platform drives the upper mould to carry out downward pressing, and the upper mould and the lower mould are matched to complete a manufacture process of center holes at two ends of the shaft. According to the cold extruding mechanism, the center holes at two ends of the shaft are manufactured through one-time extrusion, thus the coaxility precision of the two center holes is greatly improved, convenience is provided for processing of the next procedure, the product quality is greatly improved, and used raw materials are saved by 19 percent; meanwhile, the mechanical cutting frequency is reduced, the next lathing time is saved; and two-time forming is replaced by one-time forming, thus working hours are totally saved by about 25 percent.

Description

A kind of cold extrusion mechanism

Technical field

The utility model relates to the auto parts machinery production technical field, particularly a kind of cryogen press mechanism that is used for making an axle of automobile hydraulic steering pump.

Background technology

We know that an axle is arranged in the automobile hydraulic steering pump, and it is a core part in the hydraulic steering pump.This axle is in manufacturing procedure; The processing that multiple working procedure arranged will be benchmark with this centre bore (end is that centre hole, the other end are hexagon ring) at two ends all; In the conventional machining operation, because the making of such two centre bores will make two bites at a cherry, so the coaxial accuracy of these two centre bores is very poor; This causes very big difficulty for the processing of later process, has had a strong impact on the qualification rate of product.In addition, being processed in the conventional machining of axis products, the diameter of raw material round steel blank must be greater than the diameter of the maximum cylindrical of product; This is for our this root axle; Caused a lot consuming timely to mechanical car processing, simultaneously, caused the very big waste of raw material.

The utility model content

In order to overcome this two centre bores at two ends that make two bites at a cherry in the prior art, form accumulated error, so the coaxial accuracy of two centre bores at two ends is very poor; Mechanical car's processing simultaneously is consuming time, the technical disadvantages of consumptive material; The utility model provides a kind of new approach, i.e. cold extrusion mechanism, the feasible precision that should guarantee two the centre bore axialities in two ends; Save the consumption of raw material round steel again, can also shorten the process time of road machine cut operation down.

To achieve these goals, the utility model provides following technical scheme:

A kind of cold extrusion mechanism is made up of hydraulic press and grinding tool, and said mould is made up of upper die and lower die; Patrix is installed in the last workbench of hydraulic press; Counterdie is installed in the following workbench of hydraulic press, and upper and lower mould is provided with the die cavity that is complementary with axle, the axle of needs making is put into the die cavity of counterdie; The upper table band patrix and is pressed down, and upper and lower mould cooperates the manufacturing process of accomplishing axle two ends centre bore.

Further, the die head at one 60 degree angle is arranged at said counterdie bottom, and there is a hexagonal die head lower end of said patrix, and patrix presses to certain position.

Further, the length of the stroke of workbench and axle is complementary on the said hydraulic press.

Compared with prior art, the utlity model has following technique effect:

1, completion is once pushed in the making of two centre bores in axle two ends, has improved the coaxial accuracy of these two centre bores greatly, convenience is provided (0.03-0.05) for the processing of next procedure, has improved product quality greatly.

2, used raw material save 19%, reduce the machine cut number of times simultaneously, have also just practiced thrift the time of back road Vehicle Processing, on the other hand, become twice completion and are once-forming, practice thrift man-hour about 25% altogether.

Description of drawings

The mould structure sketch map that Fig. 1 uses for the utility model

Fig. 2 is the figure of the utility model mechanism processing extruding front axle

Fig. 3 is the sketch map that machines rear axle

Fig. 4 is that the K of Fig. 3 is to enlarged drawing

The specific embodiment

Below in conjunction with accompanying drawing the preferred embodiment of the utility model is done to set forth in detail, thereby the protection domain of the utility model is made more explicit defining so that advantage of the utility model and characteristic can be easier to it will be appreciated by those skilled in the art that.

A kind of cold extrusion mechanism adopts hydraulic press as process equipment, through with the making of a two ends centre bore of accomplishing needs processing cooperating of mould.

Shown in Figure 1 is the employed mould of the utility model, and patrix 1 is installed in the last workbench of hydraulic press, and counterdie 2 is installed in the following workbench of hydraulic press.Its effect of die head 21 at one 60 degree angle is arranged at counterdie 2 bottoms is exactly the centre bore of making shaft one end.It is exactly the hexagonal centre bore of making the shaft other end that there is its effect of a hexagonal die head 11 lower end of patrix 1.

After patrix 1, counterdie 2 Installation and Debugging are good, that is: A, the axiality of upper and lower mould meets the requirements.B, the stroke of workbench is complementary with the length of axle on the hydraulic press.

(having an end of endoporus to make progress) last workbench band patrix 1 and is pressed downwardly onto certain position after ought putting into counterdie 2 die cavitys like the part of Fig. 2 like this, and the first half of part as shown in Figure 2 gets into the die cavity of patrix 1.At this moment patrix 1 continues to be pressed downwardly onto certain position, two centre bores at the die head 21 beginning extrusion axis two ends at the hexagonal die head 11 of the lower end of patrix 1 and 60 degree angles of counterdie 2 bottoms.After the degree of depth of two centre bores arrives certain position; The end flat of axle contacts with two baseplanes of upper and lower die head respectively; Patrix 1 continues to pressing down; The profile of axle begins to take place plasticity and changes, and in upper and lower die cavity, under the situation in no extensible leeway, can only between upper and lower mould, stretch.The centre bore that stamps out of the interior hexagonal centre bore that squeezes out of patrix 1 and counterdie 2 has been guaranteed the precision of they axialities by mould like this.Simultaneously, by length shown in Figure 2, be forced into the length shown in Fig. 3, the material plastic deformation that is shortened part accumulates in the position, space of patrix 1 and counterdie 2, has formed the shape shown in Fig. 3.

The above; Be merely one of specific embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any those of ordinary skill in the art are in the technical scope that the utility model disclosed, and variation or the replacement that can expect without creative work all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain that claims were limited.

Claims

1. a cold extrusion mechanism is made up of hydraulic press and grinding tool, it is characterized in that; Said mould is made up of upper die and lower die, and patrix is installed in the last workbench of hydraulic press, and counterdie is installed in the following workbench of hydraulic press; Upper and lower mould is provided with the die cavity that is complementary with axle; The axle that needs are made is put into the die cavity of counterdie, and the upper table band patrix and pressed down, and upper and lower mould cooperates the manufacturing process of accomplishing axle two ends centre bore.

2. a kind of cold extrusion according to claim 1 mechanism is characterized in that the die head at one 60 degree angle is arranged at said counterdie bottom, and there is a hexagonal die head lower end of said patrix.

3. a kind of cold extrusion according to claim 1 mechanism is characterized in that the stroke of workbench is complementary with the length of axle on the said hydraulic press.