CN108607890B - Die for rotationally extruding helical-tooth internal gear - Google Patents
Die for rotationally extruding helical-tooth internal gear Download PDFInfo
- Publication number
- CN108607890B CN108607890B CN201810721887.1A CN201810721887A CN108607890B CN 108607890 B CN108607890 B CN 108607890B CN 201810721887 A CN201810721887 A CN 201810721887A CN 108607890 B CN108607890 B CN 108607890B
- Authority
- CN
- China
- Prior art keywords
- die
- unloading
- guide
- punch
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001125 extrusion Methods 0.000 claims abstract description 61
- 238000007599 discharging Methods 0.000 claims abstract description 24
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims description 7
- 238000007723 die pressing method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000012545 processing Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 description 7
- 238000003672 processing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a die for rotationally extruding an helical-tooth internal gear, which consists of an upper die and a lower die, wherein the upper die comprises a guide mechanism, a supporting mechanism, an upper discharging mechanism and an extruding mechanism, and the lower die comprises a positioning mechanism and a lower discharging mechanism; the guide pillar in the guiding mechanism is a bidirectional guide pillar, a lead sheath is arranged at the lower end of the center of a lower stripper plate in the unloading mechanism, two roller bearings are arranged between an extrusion punch and an upper fixing seat in the extrusion mechanism, the unloading mechanism is also arranged in a lower die, namely, an unloading supporting core is arranged at the center inside the guide sleeve, and an unloading ejector rod is arranged at the bottom of the unloading supporting core. The application of the invention reduces the spline rotary extrusion processing procedure, improves the production efficiency by several times, obviously improves the surface quality of products and the dimensional accuracy of workpieces, completely meets higher standard requirements, simultaneously further reduces the production cost of enterprises and can be widely popularized.
Description
Technical Field
The application relates to the technical field of extrusion dies, in particular to a die for rotationally extruding an helical-tooth internal gear.
Background
The processing of the internal tooth bevel gears of the gears has been a difficult point in the production and processing of various enterprises for many years, and the general method of various enterprises in China is to use broaches to process on special broaches at present, and the method is limited to the complex manufacture of the broaches, long period, low service life, low processing efficiency, low yield and high cost of the production mode. The internal tooth rotary extrusion forming processing method is a novel processing method researched and discussed in recent years by various processing enterprises in China, has a plurality of advantages compared with the existing production mode, such as high production efficiency, low cost, high strength and good quality of processed workpieces, and has wide popularization and application prospects. However, the production is not widely popularized and used at present due to the limitations of various reasons such as higher technical requirements, complicated operation process and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a die for rotationally extruding an helical-tooth internal gear, which has the advantages of high production efficiency, long service life and contribution to popularization.
In order to solve the technical problem, the application discloses a mould of rotatory extrusion skewed tooth internal gear comprises last mould and the lower mould that is fixed in on the workstation along with equipment operation, go up the mould and include guiding mechanism, supporting mechanism, go up shedding mechanism, extrusion mechanism, the lower mould includes positioning mechanism and shedding mechanism down.
In the upper die, the supporting mechanism consists of an upper die plate, an upper die gasket vertically erected on the upper die plate and an upper disc support plate at the top of the upper die gasket, the guiding mechanism comprises an upper guide sleeve fixed on the upper die plate and a guide pillar at the upper part of the upper die, the guide pillar is a bidirectional guide pillar, and the upper part of the guide pillar is arranged in the upper guide sleeve; the upper unloading mechanism consists of an upper unloading rod positioned in the middle of the upper die gasket, an upper unloading plate positioned at the bottom of the upper unloading rod, a lower unloading plate, an unloading supporting rod positioned between the upper unloading plate and the lower unloading plate and a lead sheath positioned at the lower end of the center of the lower unloading plate; the extrusion mechanism comprises an upper fixing seat, a punch outer sleeve arranged on the inner side of the upper fixing seat, an extrusion punch arranged in the punch outer sleeve, a lead sheath, a punch pressing ring matched and connected with the upper fixing seat, a punch pad arranged on the periphery of the upper part of the extrusion punch, and a roller bearing arranged between the extrusion punch and the upper fixing seat.
In the lower die, the positioning mechanism comprises a bottom plate arranged on the workbench, a lower fixing seat fastened on the bottom plate and a lower module matched and fixed with the lower fixing seat, the unloading mechanism comprises a guide sleeve arranged on the bottom plate and arranged on the outer side of the lower fixing seat, and an unloading supporting core arranged in the center of the guide sleeve, and an unloading ejector rod arranged at the bottom of the unloading supporting core. A lower die cushion plate A is arranged on the periphery of the unloading supporting core, and a lower die cushion plate B is arranged on the periphery of the unloading ejector rod 16.
Furthermore, the guide post and the guide sleeve are always in a fully closed state before the rotary extrusion of the punch and after the extrusion.
Further, preferably, the number of the guide posts is 4, and the number of the guide sleeves is correspondingly 4.
Further, the lead sheath is connected with the four guide posts through a stripper plate.
Further, preferably, the upper tray support plate is provided with 4.
Further, a thread matched with the extrusion punch is arranged in the inner hole of the lead sheath, and the extrusion punch always operates in the thread guide.
Further, the roller bearing is provided with two pieces which are respectively arranged at the upper and lower positions of the extrusion punch.
Further, the lower fixing seat is positioned with the bottom plate through a cylindrical straight pin and is fastened by a screw.
Further, an inner hole is formed in the center of the lower fixing seat, and the inner hole is matched and fixed with the outer circle of the lower module.
Further, a lower die pressing ring is arranged at the top of the lower module, and the lower die pressing ring is attached to the upper end of the lower module.
Compared with the prior art, the application has the advantages and beneficial effects that:
1. the invention further expands the processing method of the internal tooth bevel gear of the gear, expands the extrusion method of the internal gear of the rotary extrusion processing from research, practice and fumbling to the process of mass production application, and is widely applied in mass production, the design proves that the production practice for several years leads the spline rotary extrusion processing procedure to be reduced, the production efficiency to be improved by several times, the surface quality of the product and the dimensional accuracy of the workpiece to be obviously improved, the higher standard requirement is completely met, meanwhile, the production cost of enterprises is further reduced, the profit is increased, and a new way is provided for the innovation and synergy of enterprises;
2. the invention has a plurality of innovations in the design of the die, expands the thought and space of the die design, adds a new method in the design and application of the die, increases the die to a new height, promotes and applies the extrusion processing method of the internal tooth bevel gear of the gear in China, promotes the progress of the processing of the internal tooth bevel gear of the enterprise in China and the design and application of the die technology, and is further promoted and improved.
The use of the punch lead sheath is very important, and the function of the part is the key of the design success, and has three points: 1) Before the punch presses the workpiece, the lead sheath is contacted with the workpiece first along with the downward stroke of the upper die, and presses the workpiece all the way to keep the workpiece in a stable state, so that the pressing process is carried out and completed. 2) The protection effect to the drift in the extrusion process, in the hole of lead sheath, the preparation has with extrusion drift matched with screw thread, after the mould assembly, extrusion drift operates work in the screw thread direction of lead sheath all the time, and the lead sheath passes through the stripper and is connected with four guide posts, has obtained fine stability, because with the cooperation of drift, the drift also has fine stability, makes extrusion process accomplish under steady state all the time, consequently has obtained very high drift life-span and product quality. 3) Unloading a workpiece: when the rotary extrusion of the workpiece is completed, the extrusion punch head moves upwards along with the upper die along with the workpiece, the workpiece and the guide post are separated from the lower die, and at the moment, the unloading force is transmitted to the lead sheath through the unloading system to knock the workpiece off the extrusion punch head, so that the workpiece and the guide post are separated, and the extrusion process is completed;
the guide post is a bidirectional guide post, the upper part of the guide post is normally arranged in the upper guide sleeve, the lower working part of the guide post is used for connecting and positioning the upper die and the lower die when the lower working part of the guide post runs up and down along with the dies, and the guide post and the guide sleeve are always in a fully closed state before the rotary extrusion of the punch is started and after the extrusion is finished, so that the stability of the dies in the extrusion process is ensured;
thirdly, unlike other enterprises which select 4 ball bearings, the thrust roller bearings are arranged for completing the positioning and rotation of the extrusion punch, the design has the advantages that the die structure is simplified, larger extrusion force can be born, the service life of the bearings is greatly prolonged, the cost is reduced, and the die maintenance time is also saved;
and fourthly, the upper die and the lower die are designed to be double-knockout, and no matter which position of the workpiece is above and below the die, the workpiece can be knocked down easily from the die.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the unloading mechanism of the upper die in the invention.
Fig. 3 is a schematic structural view of the pressing mechanism of the upper die of the present invention.
Wherein: 1, unloading an upper rod; 2, an upper die backing plate; thirdly, loading and unloading the plate; 4, a plate supporting plate is arranged on the upper plate; 5, upper template; 6, upper guide sleeve; 7.
An upper fixing seat; 8, a punch head jacket; 9, extruding a punch; 10 Guide post; 11 Lower die pressing ring; 12 Lower module; 13 Discharging the supporting core; 14.
Guide sleeve; 15 A lower die bottom plate; 16 Discharging ejector rod; 17 A lower die backing plate A;18 A lower die backing plate B;19 A lower fixing seat; 20 Lead guard
Sleeving; 21 A lower stripper plate; 22 Plunger chip pressing ring; 23 A punch pad; 24 Roller bearings; 25 And (3) unloading the supporting rod.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1-3, the invention provides a die for rotationally extruding an helical-tooth internal gear, which consists of an upper die running along with equipment and a lower die fixed on a workbench, wherein the upper die comprises a guide mechanism, a supporting mechanism, an upper discharging mechanism and an extruding mechanism, and the lower die comprises a positioning mechanism and a lower discharging mechanism.
In the upper die, the supporting mechanism consists of an upper die plate 5, an upper die gasket 2 vertically standing on the upper die plate 5 and an upper disc support plate 4 at the top of the upper die gasket 2 and is used for fixing and supporting the die.
The guide mechanism comprises an upper guide sleeve 6 fixed on the upper die plate 5 and a guide pillar 10 at the upper part of the upper die, the guide pillar 10 is a bidirectional guide pillar 10, the upper part of the guide pillar 10 is arranged in the upper guide sleeve 6, and the lower working part of the guide pillar 10 is used for connecting and positioning the upper die and the lower die when the dies move up and down.
The upper discharging mechanism consists of a discharging upper rod 1 positioned in the middle of the upper die gasket 2, an upper discharging plate 3 positioned at the bottom of the discharging upper rod 1, a lower discharging plate 21, a discharging support rod 25 positioned between the upper discharging plate 3 and the lower discharging plate 21 and a lead sheath 20 positioned at the lower end of the center of the lower discharging plate 21, and the discharging mechanism enables extruded workpieces to fall off from an extrusion punch 9, so that the separation of the workpieces and the punch is smooth and simple, a large amount of time is saved, and a pushing effect is achieved on mass production of the internal tooth helical gear rotary extrusion process.
The extrusion mechanism comprises an upper fixing seat 7, a punch outer sleeve 8 arranged on the inner side of the upper fixing seat 7, an extrusion punch 9 arranged in the punch outer sleeve 8, a lead sheath 20, a punch pressing ring 22 matched and connected with the upper fixing seat 7, a punch pad 23 arranged on the periphery of the upper part of the extrusion punch 9, and a roller bearing 24 arranged between the extrusion punch 9 and the upper fixing seat 7. Before the punch begins to press the workpiece, the lead sheath 20 first contacts the workpiece as the upper die moves down and presses the workpiece all the way to maintain a steady state so that the pressing process is performed and completed. The upper part of the extrusion punch 9 is positioned and pressed by the punch sleeve 8 and the punch pad 23, the lower part of the extrusion punch 9 is fixed in the lead sheath 20, and the slender extrusion punch 9 is protected by the guide sleeve 14 at the upper part and the lower part, so that the stability of the punch in operation is enhanced, the vibration of the punch in the original extrusion process is avoided, and the dimensional accuracy and the surface quality of an extruded workpiece are greatly improved. The lead sheath 20 is connected with the four guide posts 10 through the stripper plate, so that good stability is obtained, and the punch is also good in stability due to cooperation with the punch, so that the extrusion process is always finished in a stable state, and therefore, the service life of the punch and the product quality are very high.
In the lower die, the positioning mechanism comprises a bottom plate arranged on the workbench, a lower fixing seat 19 fastened on the bottom plate, and a lower module 12 matched and fixed with the lower fixing seat 19, the lower discharging mechanism comprises a lower die guide sleeve 14 arranged on the bottom plate and outside the lower fixing seat 19, a discharging supporting core 13 arranged in the center of the lower die guide sleeve 14, and a discharging ejector rod 16 arranged at the bottom of the discharging supporting core 13. A lower die pad A17 is arranged on the periphery of the discharging supporting core 13, and a lower die pad B18 is arranged on the periphery of the discharging ejector rod 16. The lower die guide sleeve 14 is engaged with and separated from the guide post 10 in the up-down operation of the upper die, thereby completing the engagement and separation of the upper and lower dies. The unloading supporting core 13 cooperates with the unloading supporting rod 16 to eject the workpiece from the lower die when the workpiece needs to be ejected in the lower die.
Further, the guide post 10 and the guide sleeve 14 are always in a fully closed state before the rotary extrusion of the punch and after the extrusion is finished, so that the stability of the die in the extrusion process is ensured.
Further, preferably, the guide posts 10 are provided with 4, and the guide sleeves 14 are correspondingly provided with 4.
Further, the lead sheath 20 is connected with four guide posts 10 through a stripper.
Further, preferably, 4 upper tray support plates 4 are provided.
Further, a thread matched with the extrusion punch 9 is arranged in the inner hole of the guide pillar sheath 20, and the extrusion punch 9 always operates in the thread guiding mode.
Further, the two roller bearings 24 are respectively disposed at the upper and lower positions of the extrusion punch 9, so as to position and rotate the extrusion punch 9, and compared with the prior art using four roller bearings, the die structure is simplified, the bearing can bear larger extrusion force, the service life of the bearing is greatly prolonged, the cost is reduced, and the die maintenance time is also saved.
Further, the lower fixing seat 19 is positioned with the bottom plate through a cylindrical straight pin and fastened by a screw, so as to ensure the positioning accuracy of the extrusion punch 9.
Further, an inner hole is provided in the center of the lower fixing seat 19, and the inner hole is matched and fixed with the outer circle of the lower module 12, so as to position the lower module 12.
Further, a lower molding ring is arranged at the top of the lower module 12, and the lower molding ring is attached to the upper end of the lower module 12.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (7)
1. The die for rotationally extruding the helical tooth internal gear comprises an upper die and a lower die, wherein the upper die comprises a guide mechanism, a supporting mechanism, an upper discharging mechanism and an extruding mechanism, and the lower die comprises a positioning mechanism and a lower discharging mechanism;
in the upper die, the supporting mechanism consists of an upper die plate, an upper die gasket vertically standing on the upper die plate and an upper disc support plate at the top of the upper die gasket; the guide mechanism comprises an upper guide sleeve fixed on the upper die plate and a guide pillar at the upper part of the upper die, wherein the guide pillar is a bidirectional guide pillar, and the upper part of the guide pillar is arranged in the upper guide sleeve; the upper unloading mechanism consists of an upper unloading rod positioned in the middle of the upper die gasket, an upper unloading plate positioned at the bottom of the upper unloading rod, a lower unloading plate, an unloading supporting rod positioned between the upper unloading plate and the lower unloading plate and a lead sheath positioned at the lower end of the center of the lower unloading plate; the extrusion mechanism comprises an upper fixing seat, a punch outer sleeve arranged on the inner side of the upper fixing seat, an extrusion punch arranged in the punch outer sleeve, a lead sheath, a punch pressing ring matched and connected with the upper fixing seat, a punch pad arranged on the periphery of the upper part of the extrusion punch, and a roller bearing arranged between the extrusion punch and the upper fixing seat;
in the lower die, the positioning mechanism comprises a bottom plate arranged on the workbench, a lower fixing seat fastened on the bottom plate, and a lower module matched and fixed with the lower fixing seat, and the lower unloading mechanism comprises a guide sleeve arranged on the bottom plate and outside the lower fixing seat, and an unloading supporting core arranged in the center of the guide sleeve, and an unloading top arranged at the bottom of the unloading supporting core;
the guide post and the guide sleeve are always in a fully closed state before the extrusion punch head rotates to extrude and ends;
the lead sheath is connected with the four guide posts through the lower stripper plate;
and a thread matched with the extrusion punch is arranged in the inner hole of the lead sheath, and the extrusion punch always runs in the thread guide.
2. The die for rotationally extruding a helical gear according to claim 1, wherein: the guide posts are 4, and the guide sleeves are correspondingly 4.
3. The die for rotationally extruding a helical gear according to claim 1, wherein: the roller bearing is provided with two pieces which are respectively arranged at the upper and lower positions of the extrusion punch.
4. The die for rotationally extruding a helical gear according to claim 1, wherein: the upper disc support plates are provided with 4 plates.
5. The die for rotationally extruding a helical gear according to claim 1, wherein: the lower fixing seat is positioned with the bottom plate through a cylindrical straight pin and is fastened by a screw.
6. The die for rotationally extruding a helical gear according to claim 1, wherein: the center of the lower fixing seat is provided with an inner hole, and the inner hole is matched and fixed with the outer circle of the lower module.
7. The die for rotationally extruding a helical gear according to claim 1, wherein: the top of the lower module is provided with a lower die pressing ring, and the lower die pressing ring is attached to the upper end of the lower module.
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 CN108607890A (en) | 2018-10-02 |
| CN108607890B true 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) |
Families Citing this family (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 |
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 |
-
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108607890A (en) | 2018-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108607890B (en) | Die for rotationally extruding helical-tooth internal gear | |
| CN202290828U (en) | One-step forming die for gear shaft | |
| CN102303059A (en) | One-time molding method of gear wheel shaft | |
| CN201008901Y (en) | Primary molding mould with special-shaped hole stepped gear wheel | |
| CN213357665U (en) | Complex gear quenching press die | |
| CN210820540U (en) | I-shaped part press forming die | |
| CN110722726B (en) | Compression molding method for I-shaped part | |
| CN202984450U (en) | Beam part drawing die | |
| CN216679854U (en) | Nozzle semi-finished product cold press molding die | |
| CN115069909B (en) | Covering part stamping die with rotation function | |
| CN215237223U (en) | Novel auto-parts mould | |
| CN214212123U (en) | Mould for communication part | |
| CN213887837U (en) | Automatic lead positive throat mould | |
| CN208495420U (en) | A kind of novel die of rotary squeezing helical teeth internal gear | |
| CN111822640A (en) | Novel draw bar tooling die | |
| CN108311588A (en) | A kind of nuclear fuel assembly insertion tube punching die | |
| CN112692134A (en) | Automobile exhaust pipe stamping device | |
| CN210131929U (en) | Star wheel helical spline cold extrusion forming equipment | |
| CN103611749B (en) | The base pressurizing unit of contour forging technique | |
| CN111468659A (en) | Motor casing forming die | |
| CN201625792U (en) | Vertical numerical-control boring machine | |
| CN112605274A (en) | Rivet terminal surface levelling mould in high-accuracy mould | |
| CN220659097U (en) | Flexible extrusion forming device | |
| CN212551553U (en) | Novel draw bar tooling die | |
| CN216175880U (en) | Lamp holder blanking connection punching die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |