CN101712111A - Machining process of rear square axle housing of automobile - Google Patents

Abstract

The invention discloses a machining process of a rear square axle housing of an automobile. The machining process of the rear square axle housing of the automobile is characterized in that the machining process comprises the following steps of (1) blanking, namely shearing large plates into needed strip with a plate shearing machine; (2) blanking the housing once and punching, namely, performing one-time machining of blanking and punching on a punch by utilizing the blanking and punching compound die, and finishing blanking and punching processes of the upper and lower housings by using a set of dies and changing the punch head with larger and smaller holes, wherein the upper housing uses the smaller punch head and the lower housing the larger punch head; and (3) press molding, performing one-time press molding on an oil press by using the die set and finishing workpiece shape of the upper housing or the lower housing. By adopting three steps of processes, the machining process greatly shortens making cycle, dramatically reduces cost of materials, doubles production efficiency and greatly reduces production cost.

Description

A kind of machining process of rear square axle housing of automobile

Technical field

The present invention relates to a kind of processing technology of rear square axle housing of automobile sheet.

Background technology

The rear square axle housing of automobile sheet is the major part (seeing accompanying drawing 1) that vehicle rear-axle housing is formed, automotive wheels rear axle housing utilization welding procedure, is welded axle tube (1), oil-sealing sleeve (2), ring flange (3), wire clip (5), shock bracket assembly (6), venting seat (7), drain the oil seat (8), a set square (9), oil tube bracket (10), cap (11), reinforcing ring (12), steel plate holder (14) and is coupled together lower casing sheet utilizations in (4,13) by the gas guarantor; Can understand the upward synthetic square tube shape (side's of being bridge title origin) of lower casing sheet (4,13) soldering group referring to accompanying drawing 2, reach connected mode with shock bracket assembly (6), steel plate holder (14).

Be not difficult to find out that from the above upper and lower shell sheet (4,13) is the bridge of all connectors, thus the quality of shell sheet processing, quantity what, be the key factor that influences axle housing quality, output.

At present, square axle housing sheet in the processing technology step that the vehicle bridge industry generally adopts is:

1., blanking (utilizes plate shearing machine will advance the big plate of factory and is cut into required billot, as shown in Figure 3);

2., blanking (the workpiece neighboring utilizes blanking die to carry out preliminary blanking at punch press);

3., last slice towards aperture (utilize towards the aperture mould with operation 2. the workpiece of gained at punch press upper punch aperture);

4., down sheet towards macropore (utilize towards big casement with operation 2. the workpiece of gained at punch press upper punch macropore);

5., a die mould (utilizing a press-moulding die on hydraulic press, flat panel workpieces to be pressed into " V " character waveform) referring to the shape workpiece of sequence number shown in Figure 5 17;

6., secondary press (utilizing the secondary press mould " V " character waveform workpiece cross section to be pressed into " U " shape) referring to the cross sectional shape of sequence number shown in Figure 6 18 positions at hydraulic press;

7., cut straight flange or machined straight flange (utilization is cut the straight flange mould and cut away the uneven part of straight flange at punch press, or utilizes the uneven part of double end horizontal end face milling machine machining straight flange);

8., cut preceding roundlet (utilizing the preceding roundlet of circle of contact die cuts);

9., cut Hou Dayuan (cutting the back great circle after utilizing circle of contact mould).

Its processing technology complexity, thereby cost height, fabrication cycle is long, is in particular in:

1. the high aspect of cost:

A. owing to the operation of cutting edge behind the first blanking of existing old process using, technological requirement product periphery allowance is big, and general waste material accounts for 30% of workpiece gross weight, causes the waste of material many;

B. because of operation is many, it is more that old friend's expenses of labour and mould such as take at general expenses.

2. fabrication cycle is rectangular: many and indivedual process operations difficulties, reason such as dangerous big because of operation, and make production efficiency reduce greatly, cause the workpiece cost to increase substantially.

More than analyze and be not difficult to find out that square axle housing sheet has old processing technology now, causes the cost of parts height, thereby influences the market competitiveness of entire product.

Summary of the invention

The objective of the invention is to want to overcome the defective that exists in the above-mentioned prior art, a kind of improved automobile axle side axle housing machining process is provided, adopt this technology, fabrication cycle is short, and cost is low.

For realizing that the technical scheme that above-mentioned purpose of the present invention adopts is: a kind of automobile axle side axle housing machining process is characterized in that carrying out according to the following step:

1., blanking: promptly bulk sheet material is cut into required billot with plate shearing machine;

2., the once smart blanking of shell sheet, punching: promptly utilize blanking, punching hole composite die, carry out blanking, the disposable processing of punching, utilize a mold at punch press, only by changing big aperture drift, finish blanking, the punching operation of upper and lower shell sheet, the little drift of upper casing sheet, the big drift of lower casing sheet;

3., die mould: utilize press-moulding die property die mould once on hydraulic press, finish the workpiece shape of upper casing sheet or lower casing sheet.

Because the present invention in processing automobile rear square axle housing sheet process, has only adopted three-procedure, i.e. 1. blanking; 2. the once smart blanking of shell sheet, punching; 3. die mould.Thereby make fabrication cycle shorten greatly, material cost also reduces significantly, thereby has improved production efficiency greatly, has reduced production cost, is in particular in:

1. aspect that the cost of material is low: owing to adopt the once smart blanking of shell sheet, punching, general waste material accounts for 15% of workpiece gross weight, and stock utilization is effectively improved, moreover, the minimizing of mould therefor reduces the input cost of mould, utilization rate of equipment and installations improves, and maintenance cost also decreases.

2. fabrication cycle is lacked the aspect: at first 2., 3., 4. operation of the prior art is merged into operation of the present invention 2. (blanking, punching); Secondly 3. 5., 6. operation in the prior art merged into operation of the present invention; Once more because 7., 8., 9. the smart blanking of the 2. middle employing of operation of the present invention has removed operation of the prior art; So the process-cycle obviously shortens, make production efficiency improve 2 times.

More than analyze and be not difficult to find out that adopt processing technology processing automobile of the present invention back axle side axle housing sheet, cost is low, fabrication cycle is short, can effectively improve the competitiveness of product in market, has market prospects preferably.

Description of drawings

Fig. 1 is the structural representation of automobile axle housing assy.

Fig. 2 is the A-A profile of Fig. 1.

Billot schematic diagram described in Fig. 3 side of being axle housing sheet blanking operation.

Fig. 4-1 is the schematic diagram of blanking of the present invention, the prepared upper casing sheet of punching operation workpiece.

Fig. 4-2 is the schematic diagram of blanking of the present invention, the prepared lower casing sheet of punching operation workpiece.

Fig. 5 side of being axle housing sheet has prepared block diagram of die mould of old technology now.

Fig. 6 is the prepared workpiece schematic diagram of pressure-type process of the present invention.

The specific embodiment

Below in conjunction with the concrete example of implementing the present invention is done further detailed description.

The present invention has adopted three-procedure, has finished the processing of the other side's axle housing sheet, and concrete steps are as follows:

1., blanking: promptly will advance factory's bulk sheet material and be cut into billot shown in Figure 3 with plate shearing machine;

2., the once smart blanking of shell sheet, punching: carry out blanking, the disposable processing of punching at punch press, the mode that adopts repeatedly setting-out, correction, examination to stretch is determined the blanking profile, utilize a mold, only by changing big aperture drift, other is constant, finishes the processing of upper and lower shell sheet blanking, punching, the little drift of upper casing sheet, the big drift of lower casing sheet, the shape of the upper casing sheet workpiece after this operation processing is shown in Fig. 4-1, and the shape of lower casing sheet workpiece is shown in Fig. 4-2;

3., die mould: utilize press-moulding die on hydraulic press respectively to the disposable die mould of upper and lower shell sheet workpiece shown in Fig. 4-1, Fig. 4-2, finish the whole work-piece shape of upper and lower shell sheet.The concrete shape of the upper and lower shell sheet behind the die mould as shown in Figure 6, it is compared with the prior art of Fig. 5, has tangible difference.

Blanking, punching hole composite die and press-moulding die are all mould structure common on the market, no longer introduce here.

The present invention is except the technical characterictic of being narrated, and the known general knowledge of those of ordinary skill that other is in this area repeats no more here.

Claims (1)

1. automobile axle side's axle housing machining process is characterized in that carrying out according to the following step:

1., blanking: promptly bulk sheet material is cut into required billot with plate shearing machine;

2., the once smart blanking of shell sheet, punching: promptly utilize blanking, punching hole composite die, carry out blanking, the disposable processing of punching, utilize a mold at punch press, only by changing big aperture drift, finish blanking, the punching operation of upper and lower shell sheet, the little drift of upper casing sheet, the big drift of lower casing sheet;

3., die mould: utilize press-moulding die property die mould once on hydraulic press, finish the workpiece shape of upper casing sheet or lower casing sheet.

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