CN108607890A - A kind of novel die of rotary squeezing helical teeth internal gear - Google Patents
A kind of novel die of rotary squeezing helical teeth internal gear Download PDFInfo
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- CN108607890A CN108607890A CN201810721887.1A CN201810721887A CN108607890A CN 108607890 A CN108607890 A CN 108607890A CN 201810721887 A CN201810721887 A CN 201810721887A CN 108607890 A CN108607890 A CN 108607890A
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- punch
- rotary squeezing
- internal gear
- die
- guide post
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- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 238000007599 discharging Methods 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by impact extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention provides a kind of novel dies of rotary squeezing helical teeth internal gear, are made of upper die and lower die, and upper mold includes guiding mechanism, supporting mechanism, shedding mechanism, pressing mechanism, and the lower die includes detent mechanism and shedding mechanism；Guide post in the guiding mechanism is two-way guide post, in the shedding mechanism helical pitch sheath is being mounted with positioned at the lower stripper center lower end, it is squeezed in the pressing mechanism and two roller bearings is set between punch and upper fixed seat, shedding mechanism is also provided in lower die, discharging stooling is installed in the guide sleeve inside center, discharging mandril is arranged in discharging stooling bottom.The application of the present invention makes spline rotary squeezing manufacturing procedure reduce, and production efficiency improves several times, and product surface quality and workpiece size precision significantly improve, and higher standard requirement is fully achieved, while enterprise's production cost further decreases, can popularity.
Description
Technical field
This application involves extrusion die technical fields, and in particular to a kind of novel die of rotary squeezing helical teeth internal gear.
Background technology
The helical gear processing of gear internal tooth, the difficult point in always each enterprise's production and processing, domestic at present each for many years
The conventional method of enterprise is processed with broaching tool on dedicated broaching machine, and the making that this method is limited to broaching tool is complicated,
Period is long, and service life is low, and this mode of production processing efficiency is slow, low output, and cost is very high.And internal tooth rotary squeezing at
Type processing method, is a kind of novel processing method that domestic each processing enterprise's recent researches are inquired into, and the more existing mode of production is all
More advantages, such as production efficiency height, cost reduction, the workpiece strength that processes is high, high-quality, and before having extensive promote the use of
Scape.But it due to the limitation for a variety of causes such as higher technology requires, operating process is cumbersome, is not yet widely popularized in production at present
It uses.
Invention content
The technical problem to be solved in the present invention is to provide a kind of novel dies of rotary squeezing helical teeth internal gear, realize production
It is efficient, service life is long, be conducive to promote.
In order to solve the above-mentioned technical problem, this application discloses a kind of novel die of rotary squeezing helical teeth internal gear, by
With equipment operation upper mold and be fixed on workbench lower die composition, the upper mold include guiding mechanism, supporting mechanism, on unload
Expect mechanism, pressing mechanism, the lower die includes detent mechanism and lower shedding mechanism.
Wherein, in upper mold, the supporting mechanism is by cope plate, vertical upper mold gasket and the upper die-cushion stood on cope plate
Upper disk support plate composition at the top of piece, the guiding mechanism includes the upper guide bush being fixed on cope plate, the guide post on upper mold top, institute
It is two-way guide post to state guide post, and the guide post top is installed in the upper guide bush；The loading and unloading material mechanism is by being located at the upper mold
Discharging upper boom among gasket, the loading and unloading material plate positioned at discharging upper boom bottom, lower stripper, be located at the loading and unloading material plate and
Discharging strut between lower stripper and the helical pitch sheath composition positioned at the lower stripper center lower end；The pressing mechanism packet
Include the punch housing surveyed in upper fixed seat, fixed seat, the extruding punch in the punch housing, helical pitch sheath,
Coordinate the punch trim ring being connected with fixed seat, be set to the punch pad for squeezing punch top peripheral, the extruding
The roller bearing being arranged between punch and upper fixed seat.
In lower die, the detent mechanism include installation bottom plate on the table, the lower fixed seat being anchored on bottom plate,
Coordinate fixed lower module with the lower fixed seat, the shedding mechanism include guide sleeve on bottom plate on the outside of the lower fixed seat,
The discharging stooling of the guide sleeve inside center, the discharging mandril of the lower discharging stooling bottom.It is set in discharging stooling periphery
Lower mold backing plate A is set, in 16 periphery setting lower mold backing plate B of the discharging mandril.
Further, guide post before punch rotary squeezing starts and squeezes end always in fully closed conjunction state with guide sleeve.
Further, it is preferred that the guide post is provided with 4, and the guide sleeve is correspondingly provided with 4.
Further, the helical pitch sheath is connect by stripper with four guide posts.
Further, it is preferred that the upper disk support plate is provided with 4.
Further, setting and the matched screw thread of the extruding punch, the extruding in the endoporus of the guide post sheath
Punch is run in guide screw line guiding always.
Further, the roller bearing is provided with two pieces, is separately positioned on the upper and lower position of the guide post.
Further, the lower fixed seat is sold directly to households by cylinder and is positioned with the bottom plate, and is fastened by screw.
Further, lower fixed seat center is equipped with endoporus, and the endoporus matches fixation with the outer circle of the lower module.
Further, it is equipped with lower die trim ring at the top of the lower module, the upper end of the trim ring and the lower module fits.
Compared with prior art, the application has the advantage that is with advantageous effect：
1, the present invention is further extended the helical gear processing method of gear internal tooth, and rotary squeezing is made to process internal tooth
The pressing method of wheel, from study, put into practice, grope in extend to mass production application during, and in mass production
Extensive use is arrived, this design is proved by production practices in the past few years so that spline rotary squeezing manufacturing procedure is reduced, production
Efficiency improves several times, and product surface quality and workpiece size precision significantly improve, and higher standard requirement is fully achieved, simultaneously
Enterprise's production cost further decreases, and profit increases, and reforms synergy for enterprise and walks out the roads Liao Xin；
2, patent of the present invention has several innovations in the design of mold, thinking and the space of mold design is extended, in mould
Tool design and application are upper, increase new method, are allowed to rise to a new height, also make the country in gear internal tooth helical gear
Extruding method promoted and applied, promote progress and Tool and Die Technology of the domestic enterprise in the helical gear processing of internal tooth
Design and application, obtain further genralrlization and raising.
First, the use of punch helical pitch sheath, the effect of this component is extremely important, is that this item design is successfully crucial, makees
With having at 3 points：1), before punch starts workpiece extruding, helical pitch sheath with being contacted first with workpiece in upper mold downward stroke, and
Workpiece is pushed down from beginning to end, so that it is kept a kind of stable state, so that extrusion process is carried out and complete.2), in extrusion process
Protective effect to punch, in the endoporus of helical pitch sheath, making has and squeezes punch matched screw thread after mold assembly and squeeze
Pressure punch runs work in the screw thread of helical pitch sheath guiding always, and helical pitch sheath is connect with four guide posts by stripper, obtained
Good stability is arrived, due to the cooperation with punch, punch also has good stability, makes extrusion process always in stabilization
In the state of complete, therefore obtained very high punch service life and product quality.3) workpiece, is unloaded：When workpiece rotary squeezing is complete
Cheng Hou squeezes punch and is moved upwards with upper mold with workpiece, and workpiece and guide post are detached from lower mould, and unloading force is by unloading at this time
Expect that system conductive to helical pitch sheath, workpiece is laid from extruding punch, so that the two is detached, to complete extrusion process；
Second is that guide post is two-way guide post, guide post top is often loaded in upper guide bush, and working position is transported up and down with mold under guide post
For the connection of upper/lower die and positioning when row, guide post with guide sleeve before punch rotary squeezing starts and squeeze terminate, locate always
In fully closed conjunction state, to ensure the stability of mold in extrusion process；
Third, selecting 4 ball bearings different from other enterprises, and it is provided with thrust roller bearing 2, to complete
The advantages of squeezing the positioning of punch and rotation, designing in this way is the extruding force for simplifying mould structure, and capable of bearing larger, greatly
The big service life for extending bearing, reduces cost, also saves mold maintenance time；
Fourth, upper and lower mould doubles material designs, tube workpiece which position above and below mold, workpiece can be from molds, easily
It is laid.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structural schematic diagram of the shedding mechanism of upper mold in the present invention.
Fig. 3 is the structural schematic diagram of the pressing mechanism of upper mold in the present invention.
Wherein：1. discharging upper boom；2. upper die plate；3. loading and unloading material plate；Disk support plate on 4.；5. cope plate；6. upper guide bush；7.
Upper fixed seat；8. punch housing；9. squeezing punch；10. guide post；11. lower die trim ring；12. lower module；13. discharging stooling；14.
Guide sleeve；15. lower mould bottom plate；16. discharging mandril；17. lower mold backing plate A；18. lower mold backing plate B；19. lower fixed seat；20. helical pitch is protected
Set；21. lower stripper；22. punch trim ring；23. punch pad；24. roller bearing；25. discharging strut.
Specific implementation mode
Presently filed embodiment is described in detail below in conjunction with accompanying drawings and embodiments.
As shown in Figure 1-Figure 3, the present invention provides a kind of novel dies of rotary squeezing helical teeth internal gear, by being transported with equipment
Capable upper mold and the lower die composition being fixed on workbench, the upper mold include guiding mechanism, supporting mechanism, loading and unloading material mechanism,
Pressing mechanism, the lower die include detent mechanism and lower shedding mechanism.
Wherein, in upper mold, the supporting mechanism by cope plate 5, it is vertical stand on the upper mold gasket 2 on cope plate 5 and on
Upper disk support plate 4 composition at 2 top of die-cushion piece, for fixing and supporting for mold.
The guiding mechanism includes the upper guide bush 6 being fixed on cope plate 5, the guide post 10 on upper mold top, the guide post 10
For two-way guide post 10,10 top of the guide post is installed in the upper guide bush 6, and 10 times working positions of guide post are run up and down with mold
When connection and positioning for upper/lower die.
The loading and unloading material mechanism by among the upper mold gasket 2 discharging upper boom 1, be located at 1 bottom of discharging upper boom
The loading and unloading material plate 3 in portion, lower stripper 21, the discharging strut 25 between the loading and unloading material plate 3 and lower stripper 21 and it is located at
The helical pitch sheath 20 of 21 center lower end of lower stripper forms, and the shedding mechanism makes the workpiece after extruding from extruding punch 9
On split away off, so that the separation of workpiece and punch is become smooth and simple, save the plenty of time, make internal tooth helical gear rotation squeeze
It presses through and plays impetus in the mass production of journey.
The pressing mechanism includes upper fixed seat 7, the interior punch housing 8 surveyed of fixed seat 7, is located at outside the punch
The extruding punch 9 in 8, helical pitch sheath 20 are covered, the punch trim ring 22 being connected is coordinated with fixed seat 7, is set to described squeeze
Press the roller bearing 24 being arranged between the punch pad 23, the extruding punch 9 and upper fixed seat 7 of 9 top peripheral of punch.Work as punch
Before starting to workpiece extruding, helical pitch sheath 20 pushes down workpiece with being contacted first with workpiece in upper mold downward stroke from beginning to end,
So that it is kept a kind of stable state, so that extrusion process is carried out and complete.9 top of punch is squeezed by punch housing 8 and punch
The circle of pad 23 is positioned and is compressed, and the lower part for squeezing punch 9 is fixed in helical pitch sheath 20, the extruding punch 9 of elongate, due to
The fixation on top and the protection of the guide sleeve 14 of lower part are obtained, therefore enhances the stability of punch at work, is avoided previous
The trembling for squeezing punch in initial procedure, makes the dimensional accuracy of the workpiece of extruding be greatly improved with surface quality.Helical pitch
Sheath 20 is connect by stripper with four guide posts 10, has obtained good stability, due to the cooperation with punch, punch also has
There is good stability, extrusion process is made to complete at steady-state always, therefore has obtained very high punch service life and production
Quality.
In lower die, the detent mechanism includes installation bottom plate on the table, the lower fixed seat being anchored on bottom plate
19, fixed lower module 12, the lower shedding mechanism is coordinated to include the lower fixed seat 19 on bottom plate with the lower fixed seat 19
The discharging stooling 13 of the lower die guide sleeve 14 in outside, 14 inside center of lower die guide sleeve, the discharging of 13 bottom of discharging stooling
Mandril 16.In 13 periphery setting lower mold backing plate A 17 of the discharging stooling, in 16 periphery setting lower mold backing plate B of the discharging mandril
18.Lower die guide sleeve 14 coordinates and detaches with guide post 10 in lower operation on the upper mold, to complete the engagement of upper/lower die with point
From.Discharging stooling 13 acts synergistically with discharging mandril 16, and when workpiece needs ejection in lower die, workpiece is pushed up from lower die
Go out.
Further, guide post 10 before punch rotary squeezing starts and squeezes end always in complete closure shape with guide sleeve 14
State, to ensure the stability of mold in extrusion process.
Further, it is preferred that the guide post 10 is provided with 4, and the guide sleeve 14 is correspondingly provided with 4.
Further, the helical pitch sheath 20 is connect by stripper with four guide posts 10.
Further, it is preferred that the upper disk support plate 4 is provided with 4.
Further, setting and the 9 matched screw thread of extruding punch in the endoporus of 10 sheath of the guide post, it is described to squeeze
Pressure punch 9 is run in guide screw line guiding always.
Further, the roller bearing 24 is provided with two pieces, is separately positioned on the upper and lower position of the guide post 10, to
The positioning of extruding punch 9 and rotation are completed, it is middle compared to the prior art to use four ball bearings, that is, mould structure is simplified,
Larger extruding force can be born again, the service life of bearing is substantially prolonged, reduces cost, when also saving mold and safeguarding
Between.
Further, the lower fixed seat 19 is sold directly to households by cylinder and is positioned with the bottom plate, and is fastened by screw, with
Ensure the positioning accuracy of extruding punch 9.
Further, 19 center of lower fixed seat is equipped with endoporus, and the endoporus matches solid with the outer circle of the lower module 12
It is fixed, to be positioned to lower module 12.
Further, 12 top of the lower module is equipped with lower die trim ring, the upper end phase of the trim ring and the lower module 12
Fitting.
One embodiment of the present invention has been described in detail above, but the content be only the present invention preferable implementation
Example should not be construed as limiting the practical range of the present invention.It is all according to all the changes and improvements made by the present patent application range
Deng should all still fall within the scope of the patent of the present invention.
Claims (10)
1. a kind of novel die of rotary squeezing helical teeth internal gear, is made of upper die and lower die, the upper mold include guiding mechanism,
Supporting mechanism, loading and unloading material mechanism, pressing mechanism, the lower die include detent mechanism and lower shedding mechanism；
In upper mold, the supporting mechanism by cope plate, it is vertical stand on it is upper at the top of the upper mold gasket on cope plate and upper mold gasket
Disk support plate forms；The guiding mechanism includes the upper guide bush being fixed on cope plate, the guide post on upper mold top, and the guide post is double
To guide post, the guide post top is installed in the upper guide bush；The loading and unloading material mechanism is by among the upper mold gasket
Discharging upper boom, the loading and unloading material plate positioned at discharging upper boom bottom, lower stripper, be located at the loading and unloading material plate and lower stripper it
Between discharging strut and positioned at the lower stripper center lower end helical pitch sheath form；The pressing mechanism includes upper fixation
Seat, the punch housing surveyed in fixed seat, the extruding punch in the punch housing, helical pitch sheath, with it is described on
The punch trim ring of fixed seat cooperation linking, be set to it is described squeeze the punch pad of punch top peripheral, the extruding punch with it is upper
The roller bearing being arranged between fixed seat；
In lower die, the detent mechanism include installation bottom plate on the table, the lower fixed seat being anchored on bottom plate, with it is described
Lower fixed seat coordinates fixed lower module, and the lower shedding mechanism includes guide sleeve on bottom plate on the outside of the lower fixed seat, described
The discharging stooling of guide sleeve inside center, the discharging mandril of discharging stooling bottom.
2. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：The guide post with lead
It is sleeved on before the extruding punch rotary squeezing starts and squeezes and terminate to be in fully closed conjunction state always.
3. the novel die of rotary squeezing helical teeth internal gear according to claim 2, it is characterised in that：Preferably, described
Guide post is provided with 4, and the guide sleeve is correspondingly provided with 4.
4. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：The helical pitch sheath
It is connect with four guide posts by the lower stripper.
5. the novel die of rotary squeezing helical teeth internal gear according to claim 4, it is characterised in that：The guide post sheath
Endoporus in setting with the matched screw thread of the extrudings punch, the extruding punch always the guide screw line be oriented in transport
Row.
6. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：The roller bearing
It is provided with two pieces, is separately positioned on the upper and lower position of the guide post.
7. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：Preferably, described
Upper disk support plate is provided with 4.
8. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：The lower fixed seat
It is sold directly to households by cylinder and is positioned with the bottom plate, and fastened by screw.
9. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：Lower fixed seat center
Equipped with endoporus, the endoporus matches fixation with the outer circle of the lower module.
10. the novel die of rotary squeezing helical teeth internal gear according to claim 1, it is characterised in that：The lower module
Top is equipped with lower die trim ring, and the upper end of the trim ring and the lower module fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721887.1A CN108607890B (en) | 2018-07-04 | 2018-07-04 | Die for rotationally extruding helical-tooth internal gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721887.1A CN108607890B (en) | 2018-07-04 | 2018-07-04 | Die for rotationally extruding helical-tooth internal gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108607890A true CN108607890A (en) | 2018-10-02 |
| CN108607890B CN108607890B (en) | 2024-03-26 |
Family
ID=63665946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810721887.1A Active CN108607890B (en) | 2018-07-04 | 2018-07-04 | Die for rotationally extruding helical-tooth internal gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108607890B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111774427A (en) * | 2020-07-09 | 2020-10-16 | 武穴市长江工具股份有限公司 | Drill bit extrusion forming device |
| CN112058936A (en) * | 2019-06-10 | 2020-12-11 | 上海汽车变速器有限公司 | Cold extrusion molding process of bevel gear |
| CN112296115A (en) * | 2020-09-28 | 2021-02-02 | 重庆长安工业(集团)有限责任公司 | Deep conical part rotary extrusion method |
| CN115090704A (en) * | 2022-07-12 | 2022-09-23 | 辽宁华通金属有限公司 | Interference bullet shell body integrated forming device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465597A (en) * | 1994-07-18 | 1995-11-14 | Ford Motor Company | Extrusion forming of internal helical splines |
| US5551270A (en) * | 1994-07-18 | 1996-09-03 | Ford Motor Company | Extrusion forming of internal helical splines |
| CN101765471A (en) * | 2007-04-04 | 2010-06-30 | 米巴烧结奥地利有限公司 | Device and method for calibrating a sintered molded part |
| CN205074386U (en) * | 2015-09-20 | 2016-03-09 | 合肥长胜机电科技有限公司 | A blanking mould that punches a hole for producing compressor valve piece |
| WO2018008967A1 (en) * | 2016-07-06 | 2018-01-11 | 정삼균 | Powder metallurgy press mold for manufacturing helical gear |
| CN208495420U (en) * | 2018-07-04 | 2019-02-15 | 天津普天单向器有限公司 | A kind of novel die of rotary squeezing helical teeth internal gear |
-
2018
- 2018-07-04 CN CN201810721887.1A patent/CN108607890B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465597A (en) * | 1994-07-18 | 1995-11-14 | Ford Motor Company | Extrusion forming of internal helical splines |
| US5551270A (en) * | 1994-07-18 | 1996-09-03 | Ford Motor Company | Extrusion forming of internal helical splines |
| CN101765471A (en) * | 2007-04-04 | 2010-06-30 | 米巴烧结奥地利有限公司 | Device and method for calibrating a sintered molded part |
| CN205074386U (en) * | 2015-09-20 | 2016-03-09 | 合肥长胜机电科技有限公司 | A blanking mould that punches a hole for producing compressor valve piece |
| WO2018008967A1 (en) * | 2016-07-06 | 2018-01-11 | 정삼균 | Powder metallurgy press mold for manufacturing helical gear |
| CN208495420U (en) * | 2018-07-04 | 2019-02-15 | 天津普天单向器有限公司 | A kind of novel die of rotary squeezing helical teeth internal gear |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058936A (en) * | 2019-06-10 | 2020-12-11 | 上海汽车变速器有限公司 | Cold extrusion molding process of bevel gear |
| CN111774427A (en) * | 2020-07-09 | 2020-10-16 | 武穴市长江工具股份有限公司 | Drill bit extrusion forming device |
| CN112296115A (en) * | 2020-09-28 | 2021-02-02 | 重庆长安工业(集团)有限责任公司 | Deep conical part rotary extrusion method |
| CN115090704A (en) * | 2022-07-12 | 2022-09-23 | 辽宁华通金属有限公司 | Interference bullet shell body integrated forming device and method |
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| Publication number | Publication date |
|---|---|
| CN108607890B (en) | 2024-03-26 |
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