CN103785785A - Method for designing closed forging blank of integral automobile steering knuckle - Google Patents
Method for designing closed forging blank of integral automobile steering knuckle Download PDFInfo
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- CN103785785A CN103785785A CN201210447652.0A CN201210447652A CN103785785A CN 103785785 A CN103785785 A CN 103785785A CN 201210447652 A CN201210447652 A CN 201210447652A CN 103785785 A CN103785785 A CN 103785785A
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- flange
- fork
- integral
- steering knuckle
- forging
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Abstract
The invention provides a method for designing a closed forging blank of an integral automobile steering knuckle. The closed forging blank comprises a rod 1 and a flange 2. A large lug fork 5 and a small lug fork 4 are respectively arranged on the right side and the left side of the upper end surface of the flange 2. The method includes redesigning a special lightening nest between an outer blocking surface of the large lug fork and the lower end surface of the flange of the integral steering knuckle so that the lightening nest is in a filled state without recesses and is flush with the periphery of the lightening nest (as shown in a shadow portion 6 in an attached drawing 2); redesigning a special acute angle between an outer blocking surface of the small lug fork and an extension line of the upper end surface of the flange of the integral steering knuckle so that the acute angle becomes an obtuse angle which is larger than 90 degrees and smaller than 100 degrees. The method has the advantages that a forged piece of the integral automobile steering knuckle is formed by means of hot forging by the aid of a closed die forming process, and then the obtuse angle designed in the blank is machined, so that a finished integral steering knuckle product with the special acute angle between the corresponding lug fork and the upper end surface of the flange can be obtained by means of machining.
Description
Technical field
The present invention relates to the steering yoke class part in automobile steering system, specifically integral automobile steering joint sealing rough forging method for designing.
Background technology
The schematic diagram of integral automobile steering joint fabricated part as shown in Figure 1, its large ear fork 5 and microtia fork 4 being provided with by bar portion 1, ring flange 2, flange 2 forms an entirety, shown large ear is pitched between 5 overside faces and the lower surface of flange 2 loss of weight nest, between the overside face of shown microtia fork 4 and the extended line of flange 2 upper surfaces, have a sharp angle α, its angle is 90 ° of 80 ° of < α <.Form that to make integral automobile steering joint be an irregular shape.
The blank of this type of knuckle is all that alloy steel products forges, according to the shape of Integral steering joint, be acute angle because there being the angle between ear fork and flange upper surface, and the design of forging blank be all increase by 2～5mm using the appearance and size of product parts surplus as design considerations, so the Blank Design of traditional Integral steering joint does not just change the design of acute angle between original ear fork and flange upper surface in the world today, continue to keep same sharp angle α, and the Blank Design of this acute angle has just determined that integral automobile steering joint blank forging technique must be to adopt horizontal Forging Technology, sealing Forging Technology just can not realize.And original horizontal Forging Technology is with knuckle post portion horizontal axis parting because Integral steering saves in mould, this knuckle complex procedures that has just determined to produce (aided process such as flat in clapped, split, blocking), the overlap being produced are large, cause equipment investment many, stock utilization is low, and labour intensity is large.
Summary of the invention
The present invention is to provide integral automobile steering joint sealing rough forging method for designing, to guarantee that the energy-conservation enough realization sealings of Integral steering forge, in the situation that guaranteeing qualified parts, significantly reduce metal material consumption, improve stock utilization, reduce equipment investment, forge the high difficult problem of cost to solve world today's Integral steering joint part.
For this reason, technical scheme of the present invention is as shown in Figure 2: the distinctive large ear of Integral steering joint is pitched loss of weight nest between 5 overside faces and the lower surface of flange 2 and changed to be designed to be full of and do not have recess and the same put down (shown in accompanying drawing 2,6 dash areas) around; Acute angle between overside face and the flange 2 upper surface extended lines of microtia fork 4 also changes and is designed to be greater than 90 ° and is less than the obtuse angle of 100 °, can realize closed die forging by above change design.
The present invention adopts the structure that changes blank to realize sealing forging, again the obtuse angle designing in blank is processed to the acute angle that finished product requires by the mode of machining afterwards, the design of other each portion size just designs the machine-finish allowance increasing after forging routinely.According to above Blank Design scheme, just can realize the design of Integral steering joint sealing Forging Technology.According to new Integral steering joint Blank Design, because there being the profile between ear fork and flange lower surface, such Forging Technology is used sealing just to forge and falls withdrawing pattern, and there is normal pattern draft, just can be along flange bottom parting when Design of Dies, bar portion is in upper model cavity, and ear is pitched in counterdie die cavity, and this has just formed the sealing Forging Technology of Integral steering joint.The Integral steering joint blank of realizing with this new technology has just had the obtuse angle between ear fork and flange upper surface.
Beneficial effect:
Owing to there being new Integral steering joint blank design method, make the energy-conservation enough sealing Forging Technologies that adopts of Integral steering, only have 75% left and right in original horizontal Forging Technology stock utilization, existing closed die Forging Technology stock utilization brings up to 100%.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of integral automobile steering joint fork.
Wherein: 1 is bar portion; 2 is flange; 3 is bar portion center line vertical with flange 2; 4 is microtia fork; 5 is large ear fork; α is the acute angle between flange lower surface and microtia fork.
The integral automobile steering joint sealing rough forging structural representation that accompanying drawing 2 designs for the present invention.
Wherein: 1 is bar portion; 2 is flange; 3 is bar portion center line vertical with flange 2; 4 is microtia fork; 5 is large ear fork; 6 is nest of large ear fork and flange bottom; 7 is the die joint of blank; 8 pitch the obtuse angle between 4 overside faces and flange 2 upper surface extended lines for microtia.
The specific embodiment
The present invention, according to blank design method shown in accompanying drawing 2, designs concrete integral automobile steering and saves new blank.
Integral automobile steering joint sealing rough forging, comprises bar portion 1, flange 2, and the right side of flange 2 upper surfaces, left both sides are respectively equipped with large ear fork 5 and microtia fork 4.In specific implementation process, carry out upper and lower parting with blank die joint 7, have a mind to the acute angle between overside face and the extended line of flange 2 upper surfaces of microtia fork 4 also to change and be designed to be greater than 90 ° and be less than the obtuse angle of 100 °; Large ear is pitched between 5 overside faces and the lower surface of flange 2 loss of weight nest, changes and is designed to full state, does not have recess, with the same put down (shown in accompanying drawing 2,6 dash areas) around.In blank, the angle between microtia fork and flange upper surface becomes obtuse angle by sharp angle α like this; Loss of weight nest between large ear fork and flange lower surface becomes full state, with equally flat around.Sealing is forged becomes possibility, is specially ear and pitches in counterdie die cavity, and bar portion is in upper model cavity.
Shown in 2, design base mould, sealing finisher seal forging on forging press with reference to the accompanying drawings.The blanking round steel that utilizes common process to calculate, through being heated to 1200～1250 ℃, is placed in base mould, first once pushes, then is put at once direct extrusion molding in sealing finisher, and the blank forming is the blank that we design.Make it to reach drawing technical requirement through modifier treatment, finally blank is carried out to machining, wherein the acute angle between the ear of drawing requirement fork and flange upper surface directly processes by sleeping milling, to realize final each portion size of product, reaches finished product requirement.
Claims (1)
1. integral automobile steering joint sealing rough forging method for designing, comprise bar portion, flange, large ear fork and microtia fork that the right side of flange upper surface, left both sides are respectively equipped with, it is characterized in that: loss of weight nest between the distinctive large ear fork overside face of described Integral steering joint and flange lower surface changes and is designed to full state, there is not recess, with around the same flat (shown in accompanying drawing 2,6 dash areas); Integral steering saves distinctive microtia fork overside face and is designed to be greater than 90 ° with the acute angle change between the extended line of flange upper surface and is less than the obtuse angle of 100 °.
Adopt closed die forging technique, forging non-trimming, when forging, metal flows to outer rim, while encountering container wall, stops, and continues to press down, and the metal being closed produces resistance, forces it to be full of die cavity, and the non-trimming closed die of finally realizing Integral steering joint forges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210447652.0A CN103785785A (en) | 2012-10-31 | 2012-10-31 | Method for designing closed forging blank of integral automobile steering knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210447652.0A CN103785785A (en) | 2012-10-31 | 2012-10-31 | Method for designing closed forging blank of integral automobile steering knuckle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103785785A true CN103785785A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210447652.0A Pending CN103785785A (en) | 2012-10-31 | 2012-10-31 | Method for designing closed forging blank of integral automobile steering knuckle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103785785A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081192A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for hot-extrusion forging of integral type automobile steering knuckle forging blank |
| WO2017025029A1 (en) * | 2015-08-12 | 2017-02-16 | 曹立新 | Method of realizing forging of forging blank without trimming |
-
2012
- 2012-10-31 CN CN201210447652.0A patent/CN103785785A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081192A (en) * | 2015-08-12 | 2015-11-25 | 曹立新 | Method for hot-extrusion forging of integral type automobile steering knuckle forging blank |
| WO2017025029A1 (en) * | 2015-08-12 | 2017-02-16 | 曹立新 | Method of realizing forging of forging blank without trimming |
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Application publication date: 20140514 |