CN203380205U - Involute spline cemented carbide extrusion die - Google Patents
Involute spline cemented carbide extrusion die Download PDFInfo
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- CN203380205U CN203380205U CN201320421420.8U CN201320421420U CN203380205U CN 203380205 U CN203380205 U CN 203380205U CN 201320421420 U CN201320421420 U CN 201320421420U CN 203380205 U CN203380205 U CN 203380205U
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- spline
- carbide alloy
- core rod
- involute outer
- extrusion die
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Abstract
The utility model discloses an involute spline cemented carbide extrusion die. The involute spline cemented carbide extrusion die comprises a cemented carbide die core and a shell, wherein the shell is arranged outside the cemented carbide die core and is in interference fit with the cemented carbide die core; and the spline part of the cemented carbide die core comprises a spline precursor, a spline working segment and a spline return segment, which are connected continuously. The involute spline cemented carbide extrusion die provided by the utility model has the advantages of low processing cost, long service life, high processing efficiency and high processing precision, and is capable of simultaneously processing the spline for two ends of a long shaft.
Description
Technical field
The utility model relates to a kind of mould, specifically a kind of carbide alloy extrusion die that is applicable to involute outer spline on the working shaft-like part.
Background technology
Involute spline is connecting mode important in machine driving, and traditional processing mode of involute splined shaft is gear hobbing processing and Milling Process, and not only production efficiency is low, and the spline precision is not high yet.Along with the develop rapidly of auto industry, increasing to the demand of involute splined shaft class part, required precision is also more and more higher, and traditional processing mode can not meet its production and required precision gradually.Although emerging gear rolling processing mode has the advantages that production efficiency is high, Product Precision is high in recent years, the price comparison of gear rolling machine and gear rolling knife is high, debugs this link most important, needs the professional to operate.And for a longaxones parts, while needing the involute spline of two ends processing different parameters, if only have a gear rolling machine, just can't meet the task that clamped one time, two ends spline are processed simultaneously, only, after processing an end spline, again gear rolling knife be carried out to dismounting, debugging, reprocessing other end spline, troublesome poeration not only, and if the spline two ends position degree requirement is arranged, twice clamping is very large to the position tolerances.
Summary of the invention
Technical problem to be solved in the utility model is to propose that a kind of processing cost is low, long service life, working (machining) efficiency and machining accuracy high, can realize major axis two ends are processed simultaneously the involute outer spline carbide alloy extrusion die of spline.
For solving the problems of the technologies described above, the utility model involute outer spline carbide alloy extrusion die comprises carbide alloy core rod and housing, described housing is located at the outside of described carbide alloy core rod and is connected with described carbide alloy core rod interference fit, and the splined section of described carbide alloy core rod comprises that continuous connected spline is leading, spline active section and spline reverse-running section.
Above-mentioned involute outer spline carbide alloy extrusion die, it also includes cushion block, and described cushion block is located at the following of described carbide alloy core rod and is connected with described housing interference fit.
Above-mentioned involute outer spline carbide alloy extrusion die, described carbide alloy core rod adopts the cold charge interference fit to be connected with described housing, and, through 400 ℃ of constant temperature 4~5 hours, eliminates stress; Described cushion block and described housing adopt the hot charging interference fit, to increase the bearing capacity of extrusion die, extend the service life of mould.
Above-mentioned involute outer spline carbide alloy extrusion die, the leading employing conical entrance of described spline, what occur when avoiding pushing spline enters the thick phenomenon of the local pier of die orifice.
Above-mentioned involute outer spline carbide alloy extrusion die, the working width of described spline active section is chosen with the product numerical value of processed spline length by 0.2, so that in extrusion process, metal flow is easy, and frictional force is controlled to relatively little scope.
Above-mentioned involute outer spline carbide alloy extrusion die, the corner angle of described sintered carbide die in-core and transition position adopt round-corner transition, so that in extrusion process, metal is smooth, flow.
Above-mentioned involute outer spline carbide alloy extrusion die, described spline reverse-running section is pressed the spline form design, and, with certain pattern draft, so that be extruded spline, facilitates depanning.
Above-mentioned involute outer spline carbide alloy extrusion die, the space width manufacturing tolerance of described spline active section is controlled in 0.004mm, with the ellipse of effectively controlling processed spline interrod spacing size and interrod spacing, changes.
Above-mentioned involute outer spline carbide alloy extrusion die, the Index tolerance of described spline active section require 0.005mm with interior, profile of tooth tolerance 0.005m with interior, teeth directional tolerance in 0.003mm, effectively to control each individual error of processed spline.
Above-mentioned involute outer spline carbide alloy extrusion die, the tooth-face roughness Ra value of described spline active section is not more than 0.1 μ m, effectively to control the tooth-face roughness of processed spline.
Above-mentioned involute outer spline carbide alloy extrusion die, described carbide alloy core rod scribbles coating, so that the extrusion die core rod produces low-friction coefficient more, better heat-resisting quantity, higher wearability in when work, can further increase the life-span of extrusion die.
The utility model is owing to having adopted technique scheme, its adopt have that hardness is high, wear-resisting, the carbide alloy class material of intensity and a series of premium properties such as toughness is better, heat-resisting, corrosion-resistant makes core rod, the extrusion die life-span can reach more than 100,000, and the gear rolling knife life-span formed than the manufacture of employing high-speed steel exceeds a lot.Be directly installed on during application on lathe and just can use, can not only realize the processing of involute outer spline on general axial workpiece, can realize that major axis two ends process external splines by coaxial two transmission press simultaneously simultaneously, working (machining) efficiency is high.Because itself precision is higher, thereby the precision of processed spline is also very high, 5 grades of spline requirements that the accuracy class that has guaranteed processed spline can be up to state standards in GB/T3478 and stipulate, and steady quality.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model extrusion die;
Fig. 2 is that A-A in Fig. 1 is to cutaway view.
The specific embodiment
As shown in Figure 1, the utility model involute outer spline carbide alloy extrusion die comprises carbide alloy core rod 1, cushion block 2 and housing 3, and carbide alloy core rod 1 carries out the coating processing, is the critical component of extruding spline.Corner angle in carbide alloy core rod 1 and transition position adopt round-corner transition, so that in extrusion process, metal is smooth, flow.Housing 3 and cushion block 2 can change profile and structure (sometimes also can not establish cushion block 3 according to actual needs) according to the actual conditions of lathe.Housing 3 is located at the outside of carbide alloy core rod 1, cushion block 2 be located at carbide alloy core rod 1 below, carbide alloy core rod 1 and housing 3 adopts the cold charge interference fit to be connected, and, through 400 ℃ of constant temperature 4~5 hours, eliminates stress.Cushion block 2 and housing 3 adopt the hot charging interference fit.The splined section of carbide alloy core rod 1 comprises that the leading 11(of spline also enters die orifice), spline active section 12 and spline reverse-running section 13(please consult Fig. 2 simultaneously), spline leading 11 adopts conical entrance, the working width of spline active section 12 is chosen with the product numerical value of processed spline length by 0.2, so that in extrusion process, metal flow is easy, and frictional force is controlled to relatively little scope.The space width manufacturing tolerance of spline active section 12 is controlled in 0.004mm, Index tolerance require 0.005mm with interior, profile of tooth tolerance 0.005m with interior, teeth directional tolerance in 0.003mm, tooth-face roughness Ra value should not be greater than 0.1 μ m.Spline reverse-running section 13 is pressed the spline form design, and adopts certain pattern draft (large footpath, path, space width all are with gradient), so that be extruded spline, facilitates depanning.
Claims (8)
1. involute outer spline carbide alloy extrusion die, it is characterized in that, it comprises carbide alloy core rod and housing, described housing is located at the outside of described carbide alloy core rod and is connected with described carbide alloy core rod interference fit, and the splined section of described carbide alloy core rod comprises that continuous connected spline is leading, spline active section and spline reverse-running section.
2. involute outer spline carbide alloy extrusion die as claimed in claim 1, is characterized in that, it also includes cushion block, and described cushion block is located at the following of described carbide alloy core rod and is connected with described housing interference fit.
3. involute outer spline carbide alloy extrusion die as claimed in claim 2, is characterized in that, described carbide alloy core rod adopts the cold charge interference fit to be connected with described housing, and described cushion block and described housing adopt the hot charging interference fit.
4. as claim 1,2 or 3 described involute outer spline carbide alloy extrusion dies, it is characterized in that the leading employing conical entrance of described spline.
5. as claim 1,2 or 3 described involute outer spline carbide alloy extrusion dies, it is characterized in that, the working width of described spline active section is chosen with the product numerical value of processed spline length by 0.2.
6. as claim 1,2 or 3 described involute outer spline carbide alloy extrusion dies, it is characterized in that, the corner angle of described sintered carbide die in-core and transition position adopt round-corner transition.
7. as claim 1,2 or 3 described involute outer spline carbide alloy extrusion dies, it is characterized in that, described spline reverse-running section is pressed the spline form design, and with certain pattern draft.
8. as claim 1,2 or 3 described involute outer spline carbide alloy extrusion dies, it is characterized in that, described carbide alloy core rod scribbles coating.
Priority Applications (1)
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CN201320421420.8U CN203380205U (en) | 2013-07-16 | 2013-07-16 | Involute spline cemented carbide extrusion die |
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CN201320421420.8U CN203380205U (en) | 2013-07-16 | 2013-07-16 | Involute spline cemented carbide extrusion die |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103406384A (en) * | 2013-07-16 | 2013-11-27 | 恒锋工具股份有限公司 | Hard alloy extrusion die for involute external splines |
CN103934296A (en) * | 2014-04-14 | 2014-07-23 | 安徽省宁国市晨光汽车零部件有限公司 | Cold extruding-forming mold for external spline |
CN105642696A (en) * | 2016-03-29 | 2016-06-08 | 西安交通大学 | Wedge-shaped variable modulus multipore-lubricating spline shaft extrusion die with surface texture |
-
2013
- 2013-07-16 CN CN201320421420.8U patent/CN203380205U/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103406384A (en) * | 2013-07-16 | 2013-11-27 | 恒锋工具股份有限公司 | Hard alloy extrusion die for involute external splines |
CN103406384B (en) * | 2013-07-16 | 2015-07-08 | 恒锋工具股份有限公司 | Hard alloy extrusion die for involute external splines |
CN103934296A (en) * | 2014-04-14 | 2014-07-23 | 安徽省宁国市晨光汽车零部件有限公司 | Cold extruding-forming mold for external spline |
CN105642696A (en) * | 2016-03-29 | 2016-06-08 | 西安交通大学 | Wedge-shaped variable modulus multipore-lubricating spline shaft extrusion die with surface texture |
CN105642696B (en) * | 2016-03-29 | 2017-12-26 | 西安交通大学 | A kind of wedge shape with Surface Texture becomes the porous lubrication splined shaft extrusion die of modulus |
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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: 20140108 Termination date: 20180716 |