CN202114087U - Cold extrusion mould for internal spiral splines - Google Patents
Cold extrusion mould for internal spiral splines Download PDFInfo
- Publication number
- CN202114087U CN202114087U CN2011201966406U CN201120196640U CN202114087U CN 202114087 U CN202114087 U CN 202114087U CN 2011201966406 U CN2011201966406 U CN 2011201966406U CN 201120196640 U CN201120196640 U CN 201120196640U CN 202114087 U CN202114087 U CN 202114087U
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- China
- Prior art keywords
- mould
- punch
- spline
- fixed
- internal thread
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Abstract
The utility model relates to a cold extrusion mould for internal spiral splines, which comprises an upper mould and a lower mould. The upper mould comprises an upper mould base and a spline male mould in the upper mould base mounted in the upper mould base; the lower mould comprises a lower mould base and a lower female mould fixed into the lower mould base; an ejector mechanism is arranged below the lower female mould; a male mould jacket is fixed into the upper mould base; and the spline male mould is rotatably mounted in the male mould jacket. The male mould in the cold extrusion mould is capable of freely and rotatably moving and rotating along the direction of a spiral line of the male mould during extrusion, thereby extruding and forming the internal spiral splines. The cold extrusion mould gives full play to cold extrusion technology for extruding and forming internal spiral spline workpieces with technological structures of blind holes and semi-blind holes, solves the problem that the technological structures cannot be completed by cutting, and is simple in technology and high in machining precision.
Description
Technical field
The utility model relates to the cold-extrusion shaping mould, specifically a kind of internal thread spline cold-extruded mould with blind hole structure.
Background technology
Internal thread spline can be divided into through-hole structure and blind hole structure.Internal thread spline with through-hole structure can adopt Broaching Technology processing; Internal thread spline with blind hole structure can not directly adopt Broaching Technology processing, can only change design of part, earlier through hole is made at the spline position; Inlay cover again after having drawn spline; But this method also has bigger limitation, and some part is limited to structure can't inlay cover, and processing technology is complicated; Intensity descends, and machining accuracy is poor.
Because general forcing press of the prior art only has the function of moving up and down, and can only accomplish the cold-extruded of straight spline, also can't accomplish internal thread spline.
Summary of the invention
The utility model is to the problems referred to above, and a kind of design of part, internal thread spline cold-extruded mould that precision is high of not changing is provided.
Technical scheme according to the utility model: a kind of internal thread spline cold-extruded mould; Comprise patrix and counterdie; Said patrix comprises upper bolster and is installed in the spline punch in the said upper bolster; Said counterdie comprises die shoe and is fixed on the lower cavity die in the said die shoe, is provided with ejecting mechanism below the said lower cavity die; Be fixed with the punch overcoat in the said upper bolster, be rotatably mounted with said spline punch in the said punch overcoat.
Be fixed with the punch fixed cover in the said punch overcoat, the top of said spline punch is provided with flange, is provided with the shrinkage pool that holds said flange in the said punch fixed cover, and the upper and lower surface of said flange is equipped with ball.
Be provided with the punch cushion block between the top of said spline punch and the said upper bolster.
Be provided with the punch fairlead between said punch overcoat and the said spline punch.
Be provided with holddown spring between said punch fairlead and the said punch fixed cover.
Said upper bolster and said die shoe are fixed on the mould bases.
The technique effect of the utility model is: the punch in the utility model can rotate freely motion, thereby punch can be with punch hand of helix rotation extrusion modling inner vortex spline in extrusion process; The utility model is given full play to the cold-extruded technology and is accomplished the extrusion molding to the internal thread spline workpiece of blind hole, half-blindness hole process structure, has solved the process structure that cut can't be accomplished, and technology is simple, and machining accuracy is high.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the fundamental diagram of the utility model.
The specific embodiment
Be further described below in conjunction with the specific embodiment of accompanying drawing the utility model.
Among Fig. 1, Fig. 2, comprise mould bases 1, upper bolster 2, punch overcoat 3, punch cushion block 4, ball 5, spline punch 6, punch fixed cover 7, holddown spring 8, punch fairlead 9, workpiece 10, lower cavity die 11, ejecting mechanism 12, die shoe 13, shrinkage pool 14, flange 15 etc.
Like Fig. 1, shown in Figure 2, the utility model is a kind of internal thread spline cold-extruded mould, and patrix and counterdie are installed on mould bases 1.Patrix comprises the upper bolster 2 that is fixed on the mould bases 1 and is installed in the spline punch 6 in the upper bolster 2; Counterdie comprises the die shoe 13 that is fixed on the mould bases 1 and is fixed on the lower cavity die 11 in the die shoe 13, and workpiece 10 is placed on recessed imitating in 1 the die cavity; Be provided with ejecting mechanism 12 below the lower cavity die 11, the following end in contact of ejecting mechanism 12 and workpiece 10, ejecting mechanism ejected workpiece 10 with regard to 2 after workpiece 10 extruding were accomplished.
The utility model is fixed with punch overcoat 3 in upper bolster 2, in punch overcoat 3, be rotatably mounted with spline punch 6.
A kind of rotational structure of spline punch 6 is: in punch overcoat 3, be fixed with punch fixed cover 7; The top of spline punch 6 is provided with flange 15; Be provided with the shrinkage pool 14 that holds flange 15 in the punch fixed cover 7; The upper and lower surface of flange 15 is equipped with ball 5, and spline punch 6 can rotate freely in punch fixed cover 7.
Between the top of spline punch 6 and upper bolster 2, be provided with punch cushion block 4, play corrective action.
Be provided with punch fairlead 9 between punch overcoat 3 and the spline punch 6, be provided with holddown spring 8 between punch fairlead 9 and the punch fixed cover 7.In extrusion process, punch fairlead 9 contacts with workpiece 10, and under the effect of spring 8 pressure, punch fairlead 9 compresses workpiece 10.
The course of work of the utility model is following: forcing press spline punch 6 in the process of pressing down contacts with workpiece 10; Workpiece 10 materials are in extruding gets into the helicla flute of punch 6; Punch promptly rotates along with hand of helix, thereby accomplishes the cold extrusion forming of internal thread spline; When after forcing press is accomplished extruding, moving upward, punch 6 withdraws from along the hand of helix rotation that has been shaped.
The utlity model has following advantage: 1, punch can rotate freely motion, thereby punch can be with punch hand of helix rotation extrusion modling inner vortex spline in extrusion process; 2, can give full play to the cold-extruded technology and accomplish extrusion molding, solve the process structure that cut can't be accomplished the internal thread spline workpiece of blind hole, half-blindness hole process structure; 3, technology is simple, and machining accuracy is high.
Claims (6)
1. internal thread spline cold-extruded mould; Comprise patrix and counterdie; Said patrix comprises upper bolster (2) and is installed in the spline punch (6) in the said upper bolster (2); Said counterdie comprises die shoe (13) and is fixed on the lower cavity die (11) in the said die shoe (13); Be provided with ejecting mechanism (12) below the said lower cavity die (11), it is characterized in that: be fixed with punch overcoat (3) in the said upper bolster (2), be rotatably mounted with said spline punch (6) in the said punch overcoat (3).
2. according to the described internal thread spline cold-extruded of claim 1 mould; It is characterized in that: be fixed with punch fixed cover (7) in the said punch overcoat (3); The top of said spline punch (6) is provided with flange (15); Be provided with the shrinkage pool (14) that holds said flange (15) in the said punch fixed cover (7), the upper and lower surface of said flange (15) is equipped with ball (5).
3. according to the described internal thread spline cold-extruded of claim 2 mould, it is characterized in that: be provided with punch cushion block (4) between the top of said spline punch (6) and the said upper bolster (2).
4. according to the described internal thread spline cold-extruded of claim 2 mould, it is characterized in that: be provided with punch fairlead (9) between said punch overcoat (3) and the said spline punch (6).
5. according to the described internal thread spline cold-extruded of claim 4 mould, it is characterized in that: be provided with holddown spring (8) between said punch fairlead (9) and the said punch fixed cover (7).
6. according to the described internal thread spline cold-extruded of claim 1 mould, it is characterized in that: said upper bolster (2) and said die shoe (13) are fixed on the mould bases (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201966406U CN202114087U (en) | 2011-06-10 | 2011-06-10 | Cold extrusion mould for internal spiral splines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201966406U CN202114087U (en) | 2011-06-10 | 2011-06-10 | Cold extrusion mould for internal spiral splines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202114087U true CN202114087U (en) | 2012-01-18 |
Family
ID=45455185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201966406U Expired - Fee Related CN202114087U (en) | 2011-06-10 | 2011-06-10 | Cold extrusion mould for internal spiral splines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202114087U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284543A (en) * | 2011-06-10 | 2011-12-21 | 无锡市神力齿轮冷挤有限公司 | Internal spiral spline cold extrusion die |
-
2011
- 2011-06-10 CN CN2011201966406U patent/CN202114087U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284543A (en) * | 2011-06-10 | 2011-12-21 | 无锡市神力齿轮冷挤有限公司 | Internal spiral spline cold extrusion die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20170610 |