CN205289612U - Major axis type differential side gear's forging mold processing - Google Patents
Major axis type differential side gear's forging mold processing Download PDFInfo
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- CN205289612U CN205289612U CN201521018133.8U CN201521018133U CN205289612U CN 205289612 U CN205289612 U CN 205289612U CN 201521018133 U CN201521018133 U CN 201521018133U CN 205289612 U CN205289612 U CN 205289612U
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Abstract
The utility model relates to a machine -building processing field, the purpose provides a major axis type differential side gear's forging mold processing, and this mould can effectively reduce materials, increases economic benefits, improves and forges processingquality. A major axis type differential side gear's forging mold processing, goes up mould and combination lower mould including the combination. The combination lower mould includes die and liftout subassembly, lower die cavity's pattern taper is 2~3 degrees, the mould includes the profile of tooth mould in the combination, set up the direction subassembly in the combination on mould and the corresponding position of combination lower mould, set up one or more positioning recess on the die. Lower die cavity's pattern taper is 2~3 degrees, can effectively reduce materials, increases economic benefits. And the die under, can reduce the forging flank of tooth and damage, improve and forge processingquality, be favorable to follow -up machine tooling. The fine assurance secondary location of positioning recess ability that sets up on the die, same mould can be used to dummying and finish forging process, improves forged work piece precision.
Description
Technical field
This utility model relates to machine-building manufacture field, is specifically related to the forging processing mold of a kind of long-shaft type axle shaft gear.
Background technology
Automobile differential is a differential gear, is used for the power transmission ensureing each driving wheel under various moving conditions, it is to avoid skid between tire and ground. The profile of axle shaft gear is made up of bevel gear and step cylinder, and as the strength member of automobile differential, demand is big and required precision is high.
The precision forging of half axle gear of automobile differential, frequently with forging process be followed successively by the Forging Technology of stock heating, blocking, trimming, scale removal, finish-forging. This Forging Technology utilizes mould to obtain profile of tooth and the semi-finished product of major axis molding, obtains final products then through operations such as boring, end face and the hard Vehicle Processings of axle journal after forging.
Time during forging for making finish forge, forging can position, and adopts tooth die at lower and that die is placed on mould. Firstly, since the concave die cavity of major semiaxis is very deep, internal easily overstocked air, affect the shaping of shaft portion small end, workpiece quality can not be guaranteed; Secondly, for the smooth demoulding, the pattern draft of die certainly will be increased, be usually 8��10 degree, increase materials and follow-up machining difficulty; Further, forging is easy to be bonded in die, when being knocked, it is easy to strike and tooth die or ground are formed irreversible damaging, produces defect ware, affect Forging Equipment Speed and quality; Finally, blocking uses different moulds, the workpiece accuracy of impact forging with finish-forging operation.
Summary of the invention
The purpose of this utility model is to provide the forging processing mold of a kind of long-shaft type axle shaft gear, and this mould can effectively reduce materials, increases economic benefit, improves forging crudy.
For achieving the above object, this utility model be the technical scheme is that the forging processing mold of a kind of long-shaft type axle shaft gear, including combining upper mould and combined down molds. Described combined down molds includes die and liftout assembly; The pattern draft of described concave die cavity is 2��3 degree;In described combination, mould includes tooth die; Described combination arranges guidance set on mould and combined down molds correspondence position; Described die arranges one or more location indentations.
Preferred: described location indentations is locating slot, and described locating slot is wide at the top and narrow at the bottom.
Preferred: described locating slot is positioned at the groove width outside die more than inner side groove width.
Preferred: described location indentations includes the first location indentations and the second location indentations; Described first location indentations and the second location indentations are arranged on the edge of die and absorption surface, and described first location indentations and the second location indentations are separated by 1/5��1/3 arc length.
Preferred: described guidance set includes the guide pillar being arranged in described combination on mould, and is arranged on the guide pillar hole on combined down molds.
Preferred: described combined down molds includes the die circle stress matched with die; In described combination, mould includes the tooth die circle stress matched with tooth die; Described guidance set is arranged on die circle stress and tooth die circle stress.
Preferred: described liftout assembly includes the insert arranged in described concave die cavity bottom and the push rod arranged in insert.
This utility model has the advantages that this mould is sectional die, and combined down molds includes die, and arranges liftout assembly. The pattern draft of described concave die cavity is 2��3 degree. After workpiece is ejected little segment distance, namely can be taken off. Can effectively reduce materials, increase economic benefit. And die under, the forging flank of tooth can be reduced and damage, improve forging crudy, be conducive to follow-up machining. Set guidance set ensure that upper and lower mould is accurately positioned, it is ensured that mould precision. The location indentations arranged on die can well ensure that second positioning, blocking and finish-forging operation can use same mould, simplifies operation, improves the workpiece accuracy of forging.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the section B-B figure of Fig. 2;
Fig. 4 is the top view of this utility model combined down molds preferred embodiment;
Fig. 5 is the top view of the combined down molds of this utility model another preferred embodiment.
Detailed description of the invention
As shown in Figure 1, 2, the forging processing mold of a kind of long-shaft type axle shaft gear, including combining upper mould and combined down molds. Described combined down molds includes die 6 and liftout assembly; In described combination, mould includes tooth die 1. Utilizing liftout assembly to eject workpiece 9, therefore the pattern draft 8 of described die 6 die cavity is 2��3 degree, ejects little segment distance, namely can be taken off workpiece 9. Can effectively reduce materials, improve stock utilization, increase economic benefit. And die 6 under, workpiece 9 flank of tooth can be reduced and damage, improve forging crudy, be conducive to follow-up machining. Described combination arranges guidance set on mould and combined down molds correspondence position. Ensure that upper and lower mould is accurately positioned, it is ensured that mould precision.
Blocking is with when using different mould in finish-forging operation, and the deviation of die location put into by difference between mould and workpiece 9, all can affect workpiece 9 precision. Therefore described die 6 arranges one or more location indentations. Owing to arranging location indentations on recessed film 6, after blocking, workpiece 9 forms the projection consistent with location indentations shape. By the pre-forging flank of tooth through blocking operation upwards, positioning convex aligns with location indentations and puts into die 6, can well ensure that second positioning, blocking and finish-forging use same mould. So ensure finish-forging position and blocking position consistency, improve workpiece 9 precision of forging.
As in figure 2 it is shown, described location indentations is locating slot 11, pre-forging forms after blocking the boss consistent with locating slot 11 shape. Described locating slot 11 can be upper and lower consistent size, and namely cross section is rectangle. Preferably, described locating slot 11 is wide at the top and narrow at the bottom, and namely cross section can be inverted isosceles trapezoid as shown in Figure 3, be more convenient for finish-forging time positioning boss and locating slot 11 place. Preferably, as shown in Figure 4, described locating slot 11 is positioned at the groove width outside die 6 more than inner side groove width; Namely the inner place of described locating slot 11 workpiece 9 is narrower, and workpiece 9 outer end place is wider, the shape that to be in figure narrower the right, the left side wider; Deviation when avoiding boss to put into locating slot 11, improves the accuracy of location. Certainly, the cross section of locating slot 11 is not limited to rectangle and trapezoidal, it is also possible to be circular, semicircle or oval etc.
It is preferably to, it is possible to multiple location indentations is set, it is ensured that the accuracy of location. As it is shown in figure 5, described location indentations includes the first location indentations 11 ' and the second location indentations 11 ". Described first location indentations 11 ' and the second location indentations 11 " can be rectangles, trapezoidal etc., it is preferred that for the semicircle shown in figure. Described first location indentations 11 ' " is arranged on the edge that die 6 contacts with workpiece 9 with the second location indentations 11. After blocking, the edge of pre-forging forms two semicircular projections, utilizes the two projection to realize location. " 1/5��1/3 arc length of being separated by, namely " that can suffer is nearer, it is also possible to relatively far apart for described first location indentations 11 ' and the second location indentations 11 for described first location indentations 11 ' and the second location indentations 11. Preferably, described first location indentations 11 ' and the second location indentations 11 " between be separated by 1/4 arc length. Namely two projections formed on pre-forging form the angle of 90 degree with the line of centres. So arranging two location indentations, it is more accurate to position during finish-forging.
Described guidance set can be snap close guiding, adds on the contact surface that snap close is arranged on man-hour the upper mould of combination and combined down molds. And generally the bossing of snap close is arranged on combined down molds, and mould relevant position arranges the recessed portion of snap close in combination. Being positioned by snap close and lock, in combination, between mould and combined down molds, compactness is high, and processes more convenient. Can also lead by guide pillar 3 as shown in Figure 1, 2. Described guidance set includes the guide pillar 3 being arranged in described combination on mould, and is arranged on the guide pillar hole 10 on combined down molds. Adopting guide pillar 3 to lead, guiding stroke is long, and guiding accuracy is high. And mould has completed guiding with stock and combined down molds before contacting in combination, it is to avoid carry out die location adjustment after contact, reduce the abrasion of mould.
It is preferred that described combined down molds includes the die circle stress 7 matched with die 6; In described combination, mould includes the tooth die circle stress 2 matched with tooth die 1. By arranging die circle stress 7 and tooth die circle stress 2 outside die 6 and tooth die 1, strengthen combined down molds and the combination upper mould bearing capacity when forging, improve mould strength. And well protection die 6 and tooth die 1, circle stress can occur damaging in advance, and it is replaced, and reduces cost.
Guidance set can be arranged directly on die 6 and tooth die 1, and positional accuracy is higher. Preferably, described guidance set is arranged on die circle stress 7 and tooth die circle stress 2, easy to process and do not affect die 6 and tooth die 1, extends die life.Described liftout assembly includes the insert 5 arranged in described die 6 die cavity bottom and the push rod 4 arranged in insert 5. Push rod 4 drives insert 5 to move, and ejects workpiece 9. It is preferred that insert 5 is made up of the material that hardness is less, reduce the damage to workpiece 9 of the liftout process, it is ensured that workpiece 9 mass of forging.
This mould can carry out fabrication and installation according to following steps:
1, tooth die 1 and tooth die circle stress 2 pass through 1.5 degree of low-angle match grindings, are press-fitted, and axial magnitude of interference when being press-fitted is at 12-15mm, to improve die life; The polish in tooth die 1 die cavity and guide pillar hole 10 carries out after being press-fitted; Guide pillar 3 material selection GCr15, work surface requires grinding, with tooth die circle stress 2 interference fit when guide pillar 3 assembles.
2, die 6 and die circle stress 7 pass through 1.5 degree of low-angle match grindings, are press-fitted, and axial magnitude of interference when being press-fitted is at 12-15mm; The polish of die 6 die cavity and guide pillar hole 10 and forging location indentations carries out after being press-fitted; The pattern draft 8 of die 6 die cavity is 2-3 degree; Insert 5 is individually processed, and coordinates with combined down molds small?gap suture when assembling.
3, after tooth die 1 and tooth die circle stress 2 are press-fitted, machining center finish-milling parts of tooth, guide pillar hole 10 roughing after entirety edge is joined, then work in-process heart polish, it is ensured that sliding steadily, guiding is reliable.
4, mould is when mounted, and in combination, mould is connected with mould bases each through upper and lower edge-pressing board (not drawing in figure), interior hexagonal trip bolt with combined down molds, strictly controls the on position of guide pillar 3 when loading mould bases.
Claims (7)
1. a forging processing mold for long-shaft type axle shaft gear, including combining upper mould and combined down molds, it is characterised in that: described combined down molds includes die (6) and liftout assembly; The pattern draft (8) of described die (6) die cavity is 2��3 degree; In described combination, mould includes tooth die (1); Described combination arranges guidance set on mould and combined down molds correspondence position; Described die arranges one or more location indentations on (6).
2. the forging processing mold of long-shaft type axle shaft gear according to claim 1, it is characterised in that: described location indentations is locating slot (11), and locating slot (11) is wide at the top and narrow at the bottom.
3. the forging processing mold of long-shaft type axle shaft gear according to claim 2, it is characterised in that: described locating slot (11) is positioned at the groove width in die (6) outside more than inner side groove width.
4. the forging processing mold of long-shaft type axle shaft gear according to claim 1, it is characterised in that: described location indentations includes the first location indentations (11 ') and the second location indentations (11 "); (11 ") are arranged on the edge that die (6) contacts with workpiece (9) described first location indentations (11 ') with the second location indentations.
5. the forging processing mold of long-shaft type axle shaft gear according to claim 1, it is characterised in that: described guidance set includes the guide pillar (3) being arranged in described combination on mould, and is arranged on the guide pillar hole (10) on combined down molds.
6. the forging processing mold of long-shaft type axle shaft gear according to claim 1, it is characterised in that: described combined down molds includes the die circle stress (7) matched with die (6); In described combination, mould includes the tooth die circle stress (2) matched with tooth die (1); Described guidance set is arranged on die circle stress (7) and tooth die circle stress (2).
7. the forging processing mold of long-shaft type axle shaft gear according to claim 1, it is characterised in that: described liftout assembly includes the insert (5) arranged in described die (6) die cavity bottom and the push rod (4) arranged in insert (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018133.8U CN205289612U (en) | 2015-12-09 | 2015-12-09 | Major axis type differential side gear's forging mold processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018133.8U CN205289612U (en) | 2015-12-09 | 2015-12-09 | Major axis type differential side gear's forging mold processing |
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| Publication Number | Publication Date |
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| CN205289612U true CN205289612U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521018133.8U Active CN205289612U (en) | 2015-12-09 | 2015-12-09 | Major axis type differential side gear's forging mold processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393422A (en) * | 2018-02-14 | 2018-08-14 | 襄阳唐福机电科技有限公司 | A kind of bobbin forging mold |
| CN110625054A (en) * | 2019-09-25 | 2019-12-31 | 郑州机械研究所有限公司 | Long-axis gear precision forming device with boss |
-
2015
- 2015-12-09 CN CN201521018133.8U patent/CN205289612U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393422A (en) * | 2018-02-14 | 2018-08-14 | 襄阳唐福机电科技有限公司 | A kind of bobbin forging mold |
| CN110625054A (en) * | 2019-09-25 | 2019-12-31 | 郑州机械研究所有限公司 | Long-axis gear precision forming device with boss |
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| C14 | Grant of patent or utility model | ||
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