CN201632508U - Universal-joint sleeve cold extruding die - Google Patents
Universal-joint sleeve cold extruding die Download PDFInfo
- Publication number
- CN201632508U CN201632508U CN2009203163908U CN200920316390U CN201632508U CN 201632508 U CN201632508 U CN 201632508U CN 2009203163908 U CN2009203163908 U CN 2009203163908U CN 200920316390 U CN200920316390 U CN 200920316390U CN 201632508 U CN201632508 U CN 201632508U
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- universal
- die
- joint sleeve
- core rod
- die cavity
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Abstract
The utility model discloses a universal-joint sleeve cold extruding die comprising an upper die, a lower die, a pressure head arranged on the upper die, a cavity arranged in the lower die, a mold core arranged inside the cavity, and an ejecting device for ejecting a product out, wherein the ejecting device is ganged with the upper die; a guide device is arranged between the upper die and the lower die; the mold core is a step shaft embedded in the cavity; the upper part of the mold core is a core for forming, and the lower part thereof is a fixing part which is in transition fit with the cavity; and the mold core is also provided with a fan-ring-shaped discharging rod which can slide up and down and is related to the ejecting device. The die leads the mold core to be embedded into the cavity, eliminates assembly gap, improves the coaxiality of the mold core and the cavity, further improves the internal and external diameter coaxiality of the extrusion-formed universal-joint sleeve, leads the extrusion-formed universal-joint sleeve to be subjected to ground finish directly, reduces processing process and production cost, and is applicable for the cold extruding molding of the universal-joint sleeve.
Description
Technical field
The utility model relates to a kind of cold extrusion die, specifically relates to a kind of cold extrusion die of universal-joint sleeve.
Background technology
At present, the cold extrusion die of producing universal-joint sleeve generally adopts the forward extrusion forming mode, the common structure of forward extrusion mould is as follows: a patrix and a counterdie, be provided with guider between the upper die and lower die, pressure head is set on the patrix, counterdie is provided with die cavity, be provided with core rod and discharging cover in the die cavity, when patrix is descending, pressure head enters die cavity and pushes the interior blank of die cavity, blank be squeezed the back in die cavity to following elongation moulding, thereby make the direction of motion of the direction of extrusion of blank and pressure head identical, scrimp appears in the position that can avoid the cardan axis after the moulding to be enclosed near the bottom.Along with development of technology, people have higher requirement to the cold extrusion die of universal-joint sleeve, wish can directly carry out grinding through the workpiece of extrusion modling without turning processing.Because the allowance of grinding is generally 0.10mm, therefore after considering heat treatment, can produce the deformation factor of 0.03mm～0.05mm after, require part inside and outside diameter axiality after the final extrusion modling must reach the precision of φ 0.06mm.But because in the extrusion die of existing structure, need slide up and down so that the discharging cover that the workpiece of moulding is come off from core rod is set in the core rod outside, therefore, need to adopt matched in clearance between discharging cover and die cavity, discharging cover and the core rod, thereby cause the axiality of core rod and die cavity not high, the part inside and outside diameter axiality after the final extrusion modling has only the precision of φ 0.10mm.Therefore, the universal-joint sleeve after the extrusion modling needs just can carry out last grinding through turning processing earlier, has increased manufacturing procedure and manufacturing cost, has reduced production efficiency.
A kind of on Chinese patent literature the forward extrusion mould of disclosed universal-joint sleeve, its notification number is CN 201217020Y, comprise upper die and lower die, patrix leads by the guide pillars and bushes that is provided with on it, wherein, patrix is provided with the pressure head that cooperates with counterdie, be fixed with core rod in the counterdie, form die cavity between core rod and the counterdie, be equipped with the discharging cover on the core rod, quality of fit between counterdie, core rod and the discharging cover is higher than grade of precision of workpiece, and the quality of fit of pressure head and counterdie is than the high grade of precision of workpiece.This mould has also adopted the forward extrusion molding mode, can avoid scrimp occurring near bottom position at axle sleeve, but exist the axiality of core rod and die cavity not high equally, the part inside and outside diameter coaxial accuracy of extrusion modling can't satisfy and directly carry out the problem that grinding requires.
The utility model content
For the workpiece coaxial accuracy after the existing moulding of the cold extrusion die that solves existing universal-joint sleeve can't satisfy the problem of directly carrying out the required precision of grinding, the utility model provides the workpiece coaxial accuracy height after a kind of moulding, workpiece can directly carry out the universal-joint sleeve of grinding without turning processing cold extrusion die.
To achieve these goals, the utility model is by the following technical solutions: a kind of cold extrusion die of universal-joint sleeve, comprise patrix, counterdie, be located at the pressure head of patrix, be located at the die cavity of counterdie, be located at the core rod in the die cavity, be used for liftout attachment that product is ejected, described liftout attachment and patrix interlock, between upper die and lower die, also be provided with guider, described core rod is one to be embedded in the multidiameter in the die cavity, the top of core rod is the core that is used for moulding, its underpart is and the fixed part of die cavity interference fits, also is provided with the discharge arm that can slide up and down and be associated with liftout attachment on the core rod.In order to solve the not high problem of part inside and outside diameter axiality after the existing moulding of existing universal-joint sleeve cold extrusion die, the utility model will have telescopic discharging cover now and change discharge arm into, thereby make core rod can be made into multidiameter with in the die cavity that is embedded in counterdie, because between core rod and the die cavity is relatively-stationary, therefore, can adopt the interference fits assembling between the two, thereby eliminated the influence that axiality caused of fit-up gap to core rod and die cavity, improved the axiality grade between core rod and the die cavity significantly, and then make the coaxial accuracy of the workpiece of extrusion modling can reach φ 0.06mm, satisfied and directly carried out the required precision of grinding the workpiece axiality.In addition, because liftout attachment and patrix interlock, therefore, when patrix is up after extrusion modling is finished, push up on the discharge arm that liftout attachment can drive with it is associated, workpiece is ejected from die cavity, thereby can realize synchronous discharging, shorten activity time, enhance productivity.
As preferably, described liftout attachment comprises the pull bar of being located at patrix, be located at counterdie and by pull bar and patrix mandril linked, along the circumferential direction five equilibrium is provided with at least two annular breach of fan on the shaft shoulder of the fixed part of core rod, cross sectional shape is located in the annular breach of fan and with its formation with the discharge arm of the annular breach coupling of fan and is slidingly connected, and discharge arm is associated with push rod.Push rod can be realized synchronous discharging easily by pull bar and patrix interlock, and simple and reliable for structure; Be positioned on the shaft shoulder of core rod fixed part owing to be the discharge arm of fan annular, therefore, discharge arm just withstands the edge of universal-joint sleeve open side when ejecting, thereby has both helped ejecting of workpiece, has to avoid the distortion of workpiece when ejecting.
As preferably, the quantity of annular breach of described fan and discharge arm is 3.The supported at three point pattern helps the stationarity of discharging, and convenient processing.
As preferably, the lower end of described discharge arm is connected with top board, and described top board is positioned at the head of push rod and links with push rod.Because discharge arm is to be connected with top board simultaneously, therefore, discharge arm is synchronous when helping ejecting, and avoids being stuck because of ejecting the asynchronous distortion of workpiece or the discharge arm of causing.
As preferably, the tail end of described core rod is provided with limited step, thereby can make core rod accurate location in the axial direction, helps the stable of workpiece axial dimension.
As preferably, the periphery on described die cavity top is provided with the fillet that radius is 0.5mm～1mm, and pressure head is entered die cavity guide effect, and pressure head can successfully be entered in the die cavity.
As preferably, the upper surface periphery of described core is provided with the fillet that radius is 0.5mm～1mm, thereby can guarantee that core can not destroy the globality of blank and help flowing of material when extruding.
In sum, the utlity model has following beneficial effect: core rod is embedded in the die cavity, eliminated the fit-up gap, improved the axiality of core rod and die cavity, and then improved the interior external diameter axiality of the universal-joint sleeve of extrusion modling, make the universal-joint sleeve of extrusion modling directly carry out grinding, reduced manufacturing procedure, reduced production cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model when extrusion modling;
Fig. 3 is the structural representation of core rod of the present utility model;
Fig. 4 is that the utility model is at the core rod of the state of ejecting and the structural representation of discharge arm.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Among the embodiment as shown in Figure 1, the cold extrusion die of universal-joint sleeve of the present utility model comprises patrix 1, counterdie 2, pressure head 3, core rod 4, discharge arm 9 and push rod 8, the guider that leads when on patrix 1 and counterdie 2, being provided for matched moulds, that described guider can adopt is simple in structure, the guide pillar 5 and the guide pin bushing 6 of detachable assembling, so that change.The molding mode of mould adopts the forward extrusion mode, the pressure head 3 of extruding usefulness promptly is set on patrix 1, the die cavity 10 that moulding is used correspondingly is set on counterdie 2, fit clearance between pressure head 3 and the die cavity 10 is 0.02mm, the periphery on die cavity 10 tops is provided with the fillet of 0.8mm, and core rod 4 is set in die cavity 10 simultaneously.As shown in Figure 3, described core rod 4 is a multidiameter, the core 43 that its upper diameter less a section is used for moulding, and the die cavity 10 above the control core 43 is being placed the high space of 5mm in addition, blank 11 backs, the periphery of core 43 upper surfaces is provided with the fillet of 0.8mm, one section that core 43 lower diameter are bigger is fixed part 44, core rod 4 is embedded in the die cavity 10, adopt interference fits between fixed part 44 and the die cavity 10, assembly precision is-0.005mm～+ 0.01mm, to keep that suitable elasticity is arranged between the two, both can guarantee the axiality between core rod 4 and the die cavity 10, help the dismounting and the replacing of core rod 4 again.In addition, also be provided with limited step 42, thereby can make core rod 4 reliable location in the axial direction, to guarantee the extrusion modling size stability at the tail end of the fixed part 44 of core rod.Further, at the shaft shoulder place that the core 43 of core rod 4 and fixed part 44 join, five equilibrium is provided with three annular breach 41 of fan, the annular breach 41 of described fan connects fixed part 44 and limited step 42, in the annular breach 41 of fan, the discharge arm 9 (specifically referring to Fig. 4) that cross sectional shape is complementary with it is set simultaneously, the lower end of discharge arm 9 is connected with top board 13 jointly, to guarantee the synchronism of discharge arm 9 when ejecting.For shortening the discharge time, the utility model is provided with pull bar 7 on patrix 1, described pull bar 7 is associated with the push rod 8 of being located at counterdie 2, top board 13 then is positioned at the head of push rod 8 and links with push rod 8, thereby when patrix 1 is up, can drive push rods 8 actions, finish discharging to promote discharge arm 9 by pull bar 7.
The utility model in use, earlier blank 11 is put into the die cavity 10 (referring to Fig. 1) of counterdie 2, patrix 1 is descending then, and it is simultaneously descending by pull bar 7 drive push rods 8 and discharge arm 9, the pressure head 3 of patrix 1 is near die cavity 10, because die cavity 10 peripheries are provided with fillet, therefore, pressure head 3 can successfully enter in the space of die cavity 10, when pressure head 3 touches blank 11, promptly blank 11 is carried out extrusion modling and form workpiece 12 (referring to Fig. 2),, thereby help blank 11 and flow downward along core 43 because the periphery of core 43 upper surfaces is provided with fillet.After finishing moulding, patrix 1 is up, and drives push rod 8 and discharge arm 9 uplink synchronizations by pull bar 7, thereby workpiece 12 is ejected, and finishes synchronous discharging.
Claims (7)
1. the cold extrusion die of a universal-joint sleeve, comprise patrix, counterdie, be located at the pressure head of patrix, be located at the die cavity of counterdie, be located at the core rod in the die cavity, be used for liftout attachment that product is ejected, described liftout attachment and patrix interlock, between upper die and lower die, also be provided with guider, it is characterized in that, described core rod (4) is one to be embedded in the multidiameter in the die cavity (10), the top of core rod (4) is the core (43) that is used for moulding, its underpart is and the fixed part (44) of die cavity (10) interference fits, also is provided with the discharge arm (9) that can slide up and down and be associated with liftout attachment on the core rod (4).
2. the cold extrusion die of universal-joint sleeve according to claim 1, it is characterized in that, described liftout attachment comprises the pull bar (7) of being located at patrix (1), be located at counterdie (2) and by pull bar (7) and patrix (1) mandril linked (8), along the circumferential direction five equilibrium is provided with at least two fan annular breach (41) on the shaft shoulder of the fixed part (44) of core rod, cross sectional shape is located in the annular breach of fan (41) and with its formation with the discharge arm (9) of the annular breach of fan (41) coupling and is slidingly connected, and discharge arm (9) is associated with push rod (8).
3. the cold extrusion die of universal-joint sleeve according to claim 2 is characterized in that, the annular breach of described fan (41) is 3 with the quantity of discharge arm (9).
4. the cold extrusion die of universal-joint sleeve according to claim 3 is characterized in that, the lower end of described discharge arm (9) is connected with top board (13), and described top board (13) is positioned at the head of push rod (8) and links with push rod (8).
5. according to the cold extrusion die of claim 1 or 2 or 3 or 4 described universal-joint sleeves, it is characterized in that the tail end of described core rod (4) is provided with limited step (42).
6. the cold extrusion die of universal-joint sleeve according to claim 1 is characterized in that, the periphery on described die cavity (10) top is provided with the fillet that radius is 0.5mm～1mm.
7. the cold extrusion die of universal-joint sleeve according to claim 1 is characterized in that, the upper surface periphery of described core (43) is provided with the fillet that radius is 0.5mm～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203163908U CN201632508U (en) | 2009-12-02 | 2009-12-02 | Universal-joint sleeve cold extruding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203163908U CN201632508U (en) | 2009-12-02 | 2009-12-02 | Universal-joint sleeve cold extruding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201632508U true CN201632508U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203163908U Expired - Fee Related CN201632508U (en) | 2009-12-02 | 2009-12-02 | Universal-joint sleeve cold extruding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201632508U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240734A (en) * | 2011-05-09 | 2011-11-16 | 徐州广厦机电科技制造厂 | Gear connecting shaft head cold stamping die of electro-tricycle differential hollow half shaft |
| CN102267140A (en) * | 2011-07-08 | 2011-12-07 | 宁波市胜源技术转移有限公司 | Edge gap processing machine for building material decorative strip |
| CN102350615A (en) * | 2011-08-19 | 2012-02-15 | 江苏森威精锻有限公司 | Shunt blocking forming method for star-shaped sleeve |
| CN102363260A (en) * | 2011-08-19 | 2012-02-29 | 江苏森威精锻有限公司 | Hot-cold combined forming method for star-shaped sleeve of constant velocity universal joint |
| CN103357691A (en) * | 2012-04-11 | 2013-10-23 | 王显旺 | Machining mold and machining process for valve body of expanded ball valve |
| CN103624135A (en) * | 2013-11-27 | 2014-03-12 | 安徽鑫龙电器股份有限公司 | Punching composite die for machining shaft sleeve and machining method thereof |
| CN103691753A (en) * | 2013-12-13 | 2014-04-02 | 江苏飞船股份有限公司 | Cold extrusion mold for blind hole inner spline |
| CN104795713A (en) * | 2015-03-04 | 2015-07-22 | 浙江长城换向器有限公司 | Reversed L-shaped commutator bar cold-extruding mechanism |
| CN105290142A (en) * | 2015-11-16 | 2016-02-03 | 耒阳新达微科技有限公司 | Extrusion die |
| CN108421838A (en) * | 2018-04-09 | 2018-08-21 | 南京坚固高中压阀门制造有限公司 | High pressure welding ball valve valve stem sleeve disposal molding mold |
| CN113352531A (en) * | 2021-05-14 | 2021-09-07 | 重庆科技学院 | Radial-thrust integrated water-lubricated bearing hot-pressing forming die |
-
2009
- 2009-12-02 CN CN2009203163908U patent/CN201632508U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240734A (en) * | 2011-05-09 | 2011-11-16 | 徐州广厦机电科技制造厂 | Gear connecting shaft head cold stamping die of electro-tricycle differential hollow half shaft |
| CN102267140A (en) * | 2011-07-08 | 2011-12-07 | 宁波市胜源技术转移有限公司 | Edge gap processing machine for building material decorative strip |
| CN102350615A (en) * | 2011-08-19 | 2012-02-15 | 江苏森威精锻有限公司 | Shunt blocking forming method for star-shaped sleeve |
| CN102363260A (en) * | 2011-08-19 | 2012-02-29 | 江苏森威精锻有限公司 | Hot-cold combined forming method for star-shaped sleeve of constant velocity universal joint |
| CN102363260B (en) * | 2011-08-19 | 2013-11-06 | 江苏森威精锻有限公司 | Hot-cold combined forming method for star-shaped sleeve of constant velocity universal joint |
| CN103357691B (en) * | 2012-04-11 | 2016-04-13 | 王显旺 | The processing technology of threaded ball valve valve body |
| CN103357691A (en) * | 2012-04-11 | 2013-10-23 | 王显旺 | Machining mold and machining process for valve body of expanded ball valve |
| CN103624135A (en) * | 2013-11-27 | 2014-03-12 | 安徽鑫龙电器股份有限公司 | Punching composite die for machining shaft sleeve and machining method thereof |
| CN103691753A (en) * | 2013-12-13 | 2014-04-02 | 江苏飞船股份有限公司 | Cold extrusion mold for blind hole inner spline |
| CN104795713A (en) * | 2015-03-04 | 2015-07-22 | 浙江长城换向器有限公司 | Reversed L-shaped commutator bar cold-extruding mechanism |
| CN105290142A (en) * | 2015-11-16 | 2016-02-03 | 耒阳新达微科技有限公司 | Extrusion die |
| CN108421838A (en) * | 2018-04-09 | 2018-08-21 | 南京坚固高中压阀门制造有限公司 | High pressure welding ball valve valve stem sleeve disposal molding mold |
| CN113352531A (en) * | 2021-05-14 | 2021-09-07 | 重庆科技学院 | Radial-thrust integrated water-lubricated bearing hot-pressing forming die |
| CN113352531B (en) * | 2021-05-14 | 2023-05-23 | 重庆科技学院 | Radial-pushing integrated water lubrication bearing hot-press forming 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: 20101117 Termination date: 20161202 |