CN204108206U - Is furnished with the closed-type cold-extruding mould of counterpressure forming structure - Google Patents
Is furnished with the closed-type cold-extruding mould of counterpressure forming structure Download PDFInfo
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- CN204108206U CN204108206U CN201420601498.2U CN201420601498U CN204108206U CN 204108206 U CN204108206 U CN 204108206U CN 201420601498 U CN201420601498 U CN 201420601498U CN 204108206 U CN204108206 U CN 204108206U
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Abstract
The utility model discloses a kind of closed-type cold-extruding mould being furnished with counterpressure forming structure, it is made up of counterdie and patrix.The workbench of described counterdie is installed counterdie backing plate, tooth core is inserted in the hole of counterdie backing plate, tooth core overcoat toothing mould and bushing, counterdie backing plate be positioned at bushing under, with uniform spring composition counterdie floating support structure between both opposing end surfaces.The die holder bottom face of described patrix, by upper die plate location and installation die head, installs air spring in the axial bore that die holder is placed in the middle.Coaxial through-hole in described die head and upper die plate is equipped with upper ejector pin, and upper ejector pin is promoted to form patrix counterpressure forming structure by air spring.The utility model is by organic interpolation counterdie floating support structure and patrix counterpressure forming structure in cold extruding die, realize the formed machining making parking locking plate gear in enclosed die cavity, guarantee the parking locking plate gear once cold extrusion pressing formation of this nearly rectangle profile of tooth, and effectively reduce forming pressure and mould internal stress.Owing to reducing cold Seiko sequence, greatly improve production work efficiency, the utility model is particularly suitable for producing in enormous quantities.
Description
Technical field
The utility model relates to the design of a kind of metal forging mode structure, and specifically, the utility model relates to a kind of closed-type cold-extruding mould being furnished with counterpressure forming structure.
Background technology
Parking locking plate gear in Automotive parking mechanism belongs to straight spur gear one class, and the industry adopts temperature usually, forge hot adds finishing forming technology and realizes batch production.Parking locking plate tooth-formation of gear is nearly rectangle, and its architectural feature is that teeth portion is relatively long, and it is relatively high to add flank of tooth quality requirement, therefore supporting forging die pattern draft can not be excessive.Due to the restriction of these conditions, supporting forging die structural design difficulty is strengthened.At present, in industry actual production, generally use the hot-forging die of conventional structure, can prospective quality be reached.But in production process, the problems such as the distortion of forging die early-age plastic, teeth portion plucking and forging teeth portion insufficient fill easily occur, these apparent defects directly affect the crudy of follow-up cold-finish operation.
Utility model content
The utility model is mainly for the deficiencies in the prior art, a kind of closed-type cold-extruding mould being furnished with counterpressure forming structure is proposed, this mould have employed and floats and shunting forging and molding structure, the internal stress of remarkable reduction mould, thus realizing a forging and molding, forging teeth portion just can reach designing requirement without the need to doing cold-finish.
The utility model is achieved through the following technical solutions technical goal.
Be furnished with the closed-type cold-extruding mould of counterpressure forming structure, it is made up of the counterdie located on the same axis and patrix.Described counterdie comprises spring, tooth core, lower push rod, bushing, tooth mould, counterdie backing plate and workbench.Described patrix comprises die head, upper ejector pin, air spring, die holder and upper die plate.Its improvements are: install counterdie backing plate in the middle part of the workbench upper surface of described counterdie, the perpendicular tooth core put is inserted in counterdie backing plate hole upward, the tooth mould of tooth core overcoat coaxial cooperation and bushing, counterdie backing plate be positioned at bushing under, with uniform spring composition counterdie floating support structure between both opposing end surfaces.Described lower push rod is arranged in tooth core inner chamber, and the rod end exposed bottom tooth core runs through counterdie backing plate and workbench.The die holder of described patrix is plate, and the die holder bottom face on residence, by upper die plate location and installation die head, installs air spring in the axial bore that die holder is placed in the middle.Described upper ejector pin is elongate rod, and die head and the built-in coaxial through-hole of upper die plate are equipped with upper ejector pin, upper ejector pin tip contact air spring bottom, and during die forming, air spring promotes upper ejector pin displacement and forms patrix counterpressure forming structure.
Spring in said structure is compression spring.Air spring is nitrogen spring.Described tooth mould is internal tooth mode structure, and tooth core is external tooth mode structure, and tooth mould is identical with the work strip teeth portion parameter of tooth core.
The utility model compared with prior art, has following good effect:
1, be provided with floating structure in upper and lower mould, significantly reduce mould internal stress during matched moulds, effectively improve die life;
2, in enclosed die cavity, provide power drive upper ejector pin by nitrogen spring, the back pressure that upper ejector pin produces increases metal flow, is conducive to teeth portion filling;
3, the cold extrusion stage, guarantee upper and lower mould not die sinking under the action of the spring, enclosed die cavity is conducive to improving forging forming quality.
Accompanying drawing explanation
Fig. 1 is the utility model structural profile schematic diagram.
Fig. 2 is embodiment forging planar structure schematic diagram.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
The closed-type cold-extruding mould being furnished with counterpressure forming structure shown in Fig. 1, it is made up of the counterdie located on the same axis and patrix.Described counterdie is mounting spring 1.1, tooth core 1.2, lower push rod 1.3, bushing 1.4, tooth mould 1.5 and counterdie backing plate based on workbench 1.7.Described patrix is positioned on counterdie, and patrix slides up and down with supporting forcing press.Patrix comprises die head 2.1, upper ejector pin 2.2, air spring 2.3, die holder 2.4 and upper die plate 2.5.The workbench 1.7 of described counterdie is in static shape, in the middle part of workbench 1.7 upper surface, install counterdie backing plate 1.6, and the perpendicular tooth core 1.2 put is inserted in counterdie backing plate 1.6 hole upward, the tooth mould 1.5 and bushing 1.4 of tooth core 1.2 epimere overcoat coaxial cooperation.Tooth core 1.2 is external tooth mode structure, and tooth mould 1.5 is internal tooth mode structure, and tooth mould 1.5 is identical with tooth core 1.2 work strip teeth portion parameter, both matched in clearance.As shown in Figure 2, this profile of tooth is nearly rectangle for tooth mould 1.5 in the present embodiment and tooth core 1.2 teeth portion shape, and two flank of tooth angle α and β are not etc.Described counterdie backing plate 1.6 is positioned under bushing 1.4, uniform spring 1.1 between both opposing end surfaces, and in the present embodiment, spring 1.1 is compression spring, and marginal spring 1.1 forms counterdie floating support structure.Described lower push rod 1.3 is arranged in tooth core 1.2 inner chamber, and the rod end exposed bottom tooth core 1.2 runs through counterdie backing plate 1.6 and workbench 1.7.The die holder 2.4 of described patrix is plate, and die holder 2.4 bottom face on residence is by upper die plate 2.5 location and installation die head 2.1.During cold-extrusion shaping, die head 2.1 is exerted pressure with die holder 2.4 is descending, and die head 2.1 coordinates with tooth mould 1.5 upper surface of counterdie and forms enclosed die cavity.In order to provide upper contour forming back pressure, the utility model installs air spring 2.3 in die holder 2.4 axial bore placed in the middle, promotes upper ejector pin 2.2 displacement by air spring 2.3.Upper ejector pin 2.2 is elongate rod, and with die holder 2.1 and the built-in coaxial through-hole matched in clearance of upper die plate 2.5, upper ejector pin 2.2 tip contact air spring 2.3 bottom forms servo-actuated patrix counterpressure forming structure.In the present embodiment, air spring 2.3 used is nitrogen spring.
During the actual use of the utility model, first blank is placed in tooth mould 1.5 inner chamber, starting supporting forcing press drives patrix descending, until the die head 2.1 of patrix and tooth mould 1.5 matched moulds of counterdie, because the spring 1.1 in lower die structure is compression spring, produce reverse elastic force during pressurized, guaranteeing upper and lower mould not die sinking when being shaped, keeping enclosed die cavity.Blank is subject to three direction compression in enclosed die cavity, first be the compression that forcing press is applied by die head 2.1, next is spring 1.1 reaction force of pressurized, and another power is the restraining force of tooth mould 1.5 pairs of blank metal flowings, and blank easily realizes being shaped under the action of compressive stress in three directions.In addition, when the utility model is shaped for nearly rectangular teeth, the problem of teeth portion insufficient fill, promotes upper ejector pin 2.2 displacement by air spring 2.3, and being shaped to blank provides back pressure, facilitates blank metal to the teeth portion flowing being positioned at die cavity edges, is conducive to teeth portion and fills.
The utility model by organically adding counterdie floating support structure and patrix counterpressure forming structure in cold extruding die, realize the formed machining making parking locking plate gear in enclosed die cavity, guarantee the parking locking plate gear once cold extrusion pressing formation of the nearly rectangle of this profile of tooth, and effectively reduce forming pressure and mould internal stress.Owing to reducing cold-finish operation, greatly improve production work efficiency, the utility model is particularly suitable for producing in enormous quantities.
Claims (4)
1. be furnished with a closed-type cold-extruding mould for counterpressure forming structure, it is made up of the counterdie located on the same axis and patrix; Described counterdie comprises spring (1.1), tooth core (1.2), lower push rod (1.3), bushing (1.4), tooth mould (1.5), counterdie backing plate (1.6) and workbench (1.7); Described patrix comprises die head (2.1), upper ejector pin (2.2), air spring (2.3), die holder (2.4) and upper die plate (2.5); It is characterized in that: in the middle part of workbench (1.7) upper surface of described counterdie, counterdie backing plate (1.6) is installed, the perpendicular tooth core (1.2) put is inserted in counterdie backing plate (1.6) hole upward, the tooth mould (1.5) of tooth core (1.2) overcoat coaxial cooperation and bushing (1.4), counterdie backing plate (1.6) is positioned under bushing (1.4), with uniform spring (1.1) composition counterdie floating support structure between both opposing end surfaces; Described lower push rod (1.3) is arranged in tooth core (1.2) inner chamber, and the rod end exposed from tooth core (1.2) bottom runs through counterdie backing plate (1.6) and workbench (1.7); The die holder (2.4) of described patrix is plate, and die holder (2.4) bottom face on residence, by upper die plate (2.5) location and installation die head (2.1), installs air spring (2.3) in the axial bore that die holder (2.4) is placed in the middle; Described upper ejector pin (2.2) is elongate rod, die head (2.1) and the built-in coaxial through-hole of upper die plate (2.5) are equipped with upper ejector pin (2.2), upper ejector pin (2.2) tip contact air spring (2.3) bottom, during die forming, air spring (2.3) promotes upper ejector pin (2.2) displacement formation patrix counterpressure forming structure.
2. the closed-type cold-extruding mould being furnished with counterpressure forming structure according to claim 1, is characterized in that: described spring (1.1) is compression spring.
3. the closed-type cold-extruding mould being furnished with counterpressure forming structure according to claim 1, is characterized in that: described air spring (2.3) is nitrogen spring.
4. the closed-type cold-extruding mould being furnished with counterpressure forming structure according to claim 1, it is characterized in that: described tooth mould (1.5) is internal tooth mode structure, tooth core (1.2) is external tooth mode structure, and tooth mould (1.5) is identical with the work strip teeth portion parameter of tooth core (1.2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601498.2U CN204108206U (en) | 2014-10-17 | 2014-10-17 | Is furnished with the closed-type cold-extruding mould of counterpressure forming structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601498.2U CN204108206U (en) | 2014-10-17 | 2014-10-17 | Is furnished with the closed-type cold-extruding mould of counterpressure forming structure |
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| CN204108206U true CN204108206U (en) | 2015-01-21 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368741A (en) * | 2014-10-17 | 2015-02-25 | 江苏太平洋精锻科技股份有限公司 | Parking lock sheet gear closed type floating cold extrusion die |
| CN105057404A (en) * | 2015-08-24 | 2015-11-18 | 江苏龙城精锻有限公司 | Floating mold based closed shaping process for hybrid excitation claw pole |
| CN106077397A (en) * | 2016-08-25 | 2016-11-09 | 安徽六方重联机械股份有限公司 | nut production mould |
| CN107900271A (en) * | 2017-12-29 | 2018-04-13 | 江苏飞船股份有限公司 | Cold-extrusion shaping mould of the straight bevel gear with back pressure |
| CN111097872A (en) * | 2018-10-26 | 2020-05-05 | 财团法人金属工业研究发展中心 | Back pressure auxiliary forming module for forged products |
-
2014
- 2014-10-17 CN CN201420601498.2U patent/CN204108206U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368741A (en) * | 2014-10-17 | 2015-02-25 | 江苏太平洋精锻科技股份有限公司 | Parking lock sheet gear closed type floating cold extrusion die |
| CN105057404A (en) * | 2015-08-24 | 2015-11-18 | 江苏龙城精锻有限公司 | Floating mold based closed shaping process for hybrid excitation claw pole |
| CN106077397A (en) * | 2016-08-25 | 2016-11-09 | 安徽六方重联机械股份有限公司 | nut production mould |
| CN107900271A (en) * | 2017-12-29 | 2018-04-13 | 江苏飞船股份有限公司 | Cold-extrusion shaping mould of the straight bevel gear with back pressure |
| CN111097872A (en) * | 2018-10-26 | 2020-05-05 | 财团法人金属工业研究发展中心 | Back pressure auxiliary forming module for forged products |
| CN111097872B (en) * | 2018-10-26 | 2021-08-24 | 财团法人金属工业研究发展中心 | Back pressure auxiliary forming module for forged products |
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