CN109226650B - Forming die for cold extrusion processing of gear shaft and processing method thereof - Google Patents
Forming die for cold extrusion processing of gear shaft and processing method thereof Download PDFInfo
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- CN109226650B CN109226650B CN201811394609.6A CN201811394609A CN109226650B CN 109226650 B CN109226650 B CN 109226650B CN 201811394609 A CN201811394609 A CN 201811394609A CN 109226650 B CN109226650 B CN 109226650B
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- cutter mechanism
- die
- lower cutter
- hole
- blank
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- 238000000641 cold extrusion Methods 0.000 title claims abstract description 20
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 35
- 238000013016 damping Methods 0.000 claims abstract description 8
- 238000005422 blasting Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007127 saponification reaction Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- 235000009165 saligot Nutrition 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 244000017160 saligot Species 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 240000001085 Trapa natans Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forming die for cold extrusion processing of a gear shaft, which comprises an upper die holder, a lower die holder and a base, wherein an upper cutter mechanism matching hole is arranged in the upper die holder at the inner side of a damping spring, an upper cutter mechanism is matched in the upper cutter mechanism matching hole, a lower cutter mechanism hole is arranged on the upper surface of the lower die holder, a lower cutter mechanism is arranged in the lower cutter mechanism hole, a mandrel is arranged in the middle of the lower cutter mechanism, a through groove is arranged at the bottom of the lower cutter mechanism, a hydraulic cylinder fixed through a hydraulic cylinder fixing plate is arranged in the through groove, the driving end of the hydraulic cylinder is connected with the mandrel through a joint, the base is fixed below the lower die holder, the gear shaft can be conveniently taken out after being formed by adopting the forming die, gear shafts with different sizes and specifications can be processed, and redundant waste materials in processing can be collected, the invention also discloses a gear shaft cold extrusion processing method, and the gear shaft produced by the processing method has better quality.
Description
Technical Field
The invention relates to the field of dies and die processing methods, in particular to a forming die for cold extrusion processing of a gear shaft and a processing method thereof.
Background
At present, a forming die for processing a gear shaft is generally an integral die, the specification size of the gear shaft which can be processed by the die is already specified when the die is processed, and a plurality of dies which can process gear shafts with different specifications are required to be processed when the gear shaft is produced by adopting the mode, so that unnecessary economic waste is caused; the excessive blanks of the forming die of the gear shaft can flow out of the die in the processing process, the process of collecting the excessive blanks is complex, certain influence can be caused on the processing efficiency, and the resource saving is not facilitated; at present, the cold extrusion processing method of the gear shaft is single and old due to the influence of a processing die, and the production efficiency is low; therefore, there is a need for an improvement in a forming die for cold extrusion processing of a gear shaft and a processing method thereof.
Disclosure of Invention
Aiming at the technical defects, the invention provides the gear shaft cold extrusion processing method which adopts the forming die to process the gear shaft, can facilitate the gear shaft to be taken out after forming, can process gear shafts with different sizes and specifications, and can collect redundant waste materials in processing.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a forming die for cold extrusion processing of a gear shaft, which comprises an upper die holder, a lower die holder and a base, wherein a positioning column is fixed at the bottom of the upper die holder, a damping spring is arranged in the positioning column, an upper cutter mechanism matching hole is arranged in the upper die holder at the inner side of the damping spring, an upper cutter mechanism is matched in the upper cutter mechanism matching hole, a gear stamping die is arranged in the upper cutter mechanism, a core die is arranged in the gear stamping die, a lower cutter mechanism hole is arranged on the upper surface of the lower die holder, a lower cutter mechanism is arranged in the lower cutter mechanism hole, positioning grooves are arranged at the left side and the right side of the lower cutter mechanism hole, a mandrel is arranged in the middle of the lower cutter mechanism, a through groove is arranged at the bottom of the lower cutter mechanism, and a hydraulic cylinder fixed on the lower die holder through a bottom hydraulic, the driving end of the hydraulic cylinder is connected with the mandrel through a joint, and a base is fixed below the lower die base.
Further, the upper cutter mechanism comprises an annular upper cutter fixing seat and an annular upper cutter, a gear stamping die fixing hole is formed in the middle of the upper cutter fixing seat, the top part of the gear stamping die is clamped at the top of the gear stamping die fixing hole, the core die is matched in the gear stamping die fixing hole, the upper cutter is welded to the bottom of the upper cutter fixing seat, a plurality of through holes are formed in the surface of the upper cutter, and a top cover fixed on the upper cutter fixing seat through bolts is arranged at the top of the gear stamping die.
Further, lower cutter mechanism is including being annular lower cutter fixing base and being annular lower cutter, lower cutter fixing base middle part is equipped with the dabber hole, the dabber cooperation is downthehole at the dabber, the cooperation piece of annular form is welded to the bottom of lower cutter fixing base, the cooperation piece cooperation is in the cooperation groove of seting up in being located the die holder, the lower cutter welding is on the surface of cutter fixing base, the surface distribution of lower cutter top part has a plurality of through-hole, the inside formation punching press chamber of cutter down.
Furthermore, a waste trough is formed in the lower die holder on the outer side of the lower cutter mechanism, waste recovery blocks are arranged in the left side and the right side of the lower die holder, waste cavities used for collecting waste materials are formed in the waste recovery blocks, and the bottoms of the waste troughs are communicated into the waste cavities.
The invention also provides a cold extrusion processing method of the gear shaft, which comprises the following steps:
(1) blanking, sawing the bar raw material into a blank to be processed;
(2) shot blasting, namely adding a proper amount of water caltrop sand into steel shots of a shot blasting machine, and roughening the surface of a blank to form a pit;
(3) coating the surface, heating the proportioned graphite liquid to 145-310 ℃, soaking the blank subjected to shot blasting in the graphite liquid for several minutes, and airing;
(4) heating, namely heating the blank with the finished coating to 745-960 ℃;
(5) forging, wherein the heated blank is forward extruded;
(6) normalizing, namely putting the blank into a normalizing furnace, heating to 855 ℃ of 815 ℃, preserving heat for 2 hours, and quickly cooling by air after discharging;
(7) shot blasting, namely adding 0.6-0.7 mm steel shots into a shot blasting machine to remove oxide skins on the inner and outer surfaces of the blank;
(8) performing phosphorization and saponification, namely performing phosphorization and saponification surface treatment on the shot-blasted blank for 15-25 minutes and saponifying for 10-30 minutes;
(9) and (3) cold extrusion molding, namely putting the prepared blank into the molding die for cold extrusion processing of the gear shaft for extrusion molding.
The invention has the beneficial effects that:
the gear shaft processed by the forming die can be conveniently taken out after being formed, gear shafts with different sizes and specifications can be processed, redundant waste materials in processing can be collected, and the gear shaft produced by the processing method has good surface quality and stable forming.
Drawings
Fig. 1 is a schematic view of the overall structure of the mold of the present invention.
Fig. 2 is a bottom view of the upper die holder.
FIG. 3 is a top view of the lower die holder.
In the figure, an upper die holder 1, a lower die holder 2, a base 3, a positioning column 4, a damping spring 5, an upper cutter mechanism matching hole 6, a gear stamping die 7, a core die 8, a lower cutter mechanism hole 9, a positioning groove 10, a core shaft 11, a through groove 12, a hydraulic cylinder fixing plate 13, a joint 14, an upper cutter fixing seat 15, an upper cutter 16, a gear stamping die fixing hole 17, a top cover 18, a lower cutter fixing seat 19, a lower cutter 20, a core shaft hole 21, a matching block 22, a matching groove 23, a waste groove 24, a waste recovery block 25, a waste cavity 26 and a stamping cavity 27.
Detailed Description
As shown in fig. 1 to 3, a forming die for cold extrusion processing of a gear shaft includes an upper die holder 1, a lower die holder 2 and a base 3, a positioning column 4 is fixed at the bottom of the upper die holder 1, a damping spring 5 is arranged in the positioning column 4, an upper cutter mechanism matching hole 6 is arranged in the upper die holder 1 on the inner side of the damping spring 5, an upper cutter mechanism is matched in the upper cutter mechanism matching hole 6, a gear stamping die 7 is arranged in the upper cutter mechanism, a core die 8 is arranged in the gear stamping die 7, a lower cutter mechanism hole 9 is arranged on the upper surface of the lower die holder 2, a lower cutter mechanism is arranged in the lower cutter mechanism hole 9, positioning grooves 10 are arranged on the left side and the right side of the lower cutter mechanism hole 9, a core shaft 11 is arranged in the middle of the lower cutter mechanism, a through groove 12 is arranged at the bottom of the lower cutter mechanism, and a hydraulic cylinder 13 fixed on the lower die holder 2 through a bottom fixing plate And the driving end of the hydraulic cylinder is connected with a mandrel 11 through a joint 14, and a base 3 is fixed below the lower die holder 2.
The upper cutter mechanism comprises an annular upper cutter fixing seat 15 and an annular upper cutter 16, a gear stamping die fixing hole 17 is formed in the middle of the upper cutter fixing seat 15, the top portion of the gear stamping die 7 is clamped at the top of the gear stamping die fixing hole 17, the core die 8 is matched in the gear stamping die fixing hole 17, the upper cutter 16 is welded at the bottom of the upper cutter fixing seat 15, a plurality of through holes are formed in the surface of the upper cutter 16, and a top cover 18 fixed on the upper cutter fixing seat 15 through bolts is arranged at the top of the gear stamping die.
Lower cutter mechanism is including being annular lower cutter fixing base 19 and being annular lower cutter 20, cutter fixing base 19 middle part is equipped with dabber hole 21 down, the cooperation of dabber 11 is in dabber hole 21, the cooperation piece 22 of lower cutter fixing base 19's bottom welding annular form, the cooperation piece 22 cooperation is in being arranged in the cooperation groove 23 of die holder 2 interior seting up, lower cutter 20 welds on the surface of cutter fixing base, the surface distribution of lower cutter 20 top part has a plurality of through-hole, the inside formation punching press chamber 27 of lower cutter 20.
A waste trough 24 is formed in the lower die holder 2 on the outer side of the lower cutter mechanism, waste recovery blocks 25 are arranged in the left side and the right side of the lower die holder 2, waste cavities 26 used for collecting waste are formed in the waste recovery blocks 25, and the bottoms of the waste troughs 24 are communicated into the waste cavities 26.
A cold extrusion processing method for a gear shaft comprises the following steps:
(1) blanking, sawing the bar raw material into a blank to be processed;
(2) shot blasting, namely adding a proper amount of water caltrop sand into steel shots of a shot blasting machine, and roughening the surface of a blank to form a pit;
(3) coating the surface, heating the proportioned graphite liquid to 145-310 ℃, soaking the blank subjected to shot blasting in the graphite liquid for several minutes, and airing;
(4) heating, namely heating the blank with the finished coating to 745-960 ℃;
(5) forging, wherein the heated blank is forward extruded;
(6) normalizing, namely putting the blank into a normalizing furnace, heating to 855 ℃ of 815 ℃, preserving heat for 2 hours, and quickly cooling by air after discharging;
(7) shot blasting, namely adding 0.6-0.7 mm steel shots into a shot blasting machine to remove oxide skins on the inner and outer surfaces of the blank;
(8) performing phosphorization and saponification, namely performing phosphorization and saponification surface treatment on the shot-blasted blank for 15-25 minutes and saponifying for 10-30 minutes;
(9) cold extrusion molding, namely putting the prepared blank into a stamping cavity 27, wherein the top of an upper die holder 1 needs to be connected to the driving end of a stamping machine, the stamping machine provides stamping force, the upper die holder 1 stamps towards a lower die holder 2, an upper cutter 16 cuts the excessive part of the outer side of the blank in a lower cutter 20 on the lower die holder 2, and the cut excessive blank flows into a waste material groove 24 through holes in the upper cutter 16 and the lower cutter 20 and then flows into a waste material decocting cavity 26 through the waste material groove 24 for recovery; the gear stamping die 7 stamps the blank from top to bottom, and the blank enters the core die 8 and is stamped and formed into a gear shaft during stamping; after the upper die holder 1 is reset, the mandrel 11 is pushed through the hydraulic cylinder, and the mandrel 11 pushes the gear shaft to be separated from the punching cavity 27, so that the gear shaft is convenient to take out; the upper cutter mechanism and the lower cutter mechanism are both detachable connecting structures and can be replaced, so that the production requirements of gear shafts with different specifications are met; the waste recovery block 25 is also a movable connection structure, after the waste collection is finished, the waste recovery block 25 can be pulled out from the lower die holder 2, and the recovered waste can be reused.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The utility model provides a forming die of cold extrusion tooling of gear shaft, includes upper die base, die holder and base, its characterized in that: a positioning column is fixed at the bottom of the upper die base, a damping spring is arranged in the positioning column, an upper cutter mechanism matching hole is arranged in the upper die base on the inner side of the damping spring, an upper cutter mechanism is matched in the upper cutter mechanism matching hole, a gear stamping die is arranged in the upper cutter mechanism, a core die is arranged in the gear stamping die, a lower cutter mechanism hole is arranged on the upper surface of the lower die base, a lower cutter mechanism is arranged in the lower cutter mechanism hole, positioning grooves are arranged on the left side and the right side of the lower cutter mechanism hole, a mandrel is arranged in the middle of the lower cutter mechanism, a through groove is arranged at the bottom of the lower cutter mechanism, a hydraulic cylinder fixed on the lower die base through a bottom hydraulic cylinder fixing plate is arranged in the through groove, the driving end of the hydraulic cylinder is connected with the mandrel through a joint, and a base, the upper cutter mechanism comprises an annular upper cutter fixing seat and an annular upper cutter, a gear stamping die fixing hole is formed in the middle of the upper cutter fixing seat, the top part of the gear stamping die is clamped at the top of the gear stamping die fixing hole, the core die is matched in the gear stamping die fixing hole, the upper cutter is welded at the bottom of the upper cutter fixing seat, a plurality of through holes are distributed in the surface of the upper cutter, a top cover fixed on the upper cutter fixing seat through bolts is arranged at the top of the gear stamping die, the lower cutter mechanism comprises an annular lower cutter fixing seat and an annular lower cutter, a core shaft hole is formed in the middle of the lower cutter fixing seat, the core shaft is matched in the core shaft hole, an annular matching block is welded at the bottom of the lower cutter fixing seat, and the matching block is matched in a matching groove formed in the lower seat, the lower cutter is welded on the surface of the cutter fixing seat, a plurality of through holes are distributed on the surface of the upper part of the lower cutter, and a punching cavity is formed inside the lower cutter.
2. The forming die for cold extrusion processing of the gear shaft according to claim 1, wherein a waste trough is formed in the lower die holder outside the lower cutter mechanism, waste recovery blocks are arranged in the left side and the right side of the lower die holder, a waste cavity for collecting waste is formed in each waste recovery block, and the bottom of the waste trough is communicated into the waste cavity.
3. A cold extrusion processing method for a gear shaft is characterized by comprising the following steps:
(1) blanking, sawing the bar raw material into a blank to be processed;
(2) shot blasting, namely adding a proper amount of water caltrop sand into steel shots of a shot blasting machine, and roughening the surface of a blank to form a pit;
(3) coating the surface, heating the proportioned graphite liquid to 145-310 ℃, soaking the blank subjected to shot blasting in the graphite liquid for several minutes, and airing;
(4) heating, namely heating the blank with the finished coating to 745-960 ℃;
(5) forging, wherein the heated blank is forward extruded;
(6) normalizing, namely putting the blank into a normalizing furnace, heating to 855 ℃ of 815 ℃, preserving heat for 2 hours, and quickly cooling by air after discharging;
(7) shot blasting, namely adding 0.6-0.7 mm steel shots into a shot blasting machine to remove oxide skins on the inner and outer surfaces of the blank;
(8) performing phosphorization and saponification, namely performing phosphorization and saponification surface treatment on the shot-blasted blank for 15-25 minutes and saponifying for 10-30 minutes;
(9) cold extrusion molding, placing the prepared blank into a molding die for cold extrusion processing of the gear shaft according to claim 1 or 2, and carrying out extrusion molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394609.6A CN109226650B (en) | 2018-11-20 | 2018-11-20 | Forming die for cold extrusion processing of gear shaft and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394609.6A CN109226650B (en) | 2018-11-20 | 2018-11-20 | Forming die for cold extrusion processing of gear shaft and processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109226650A CN109226650A (en) | 2019-01-18 |
| CN109226650B true CN109226650B (en) | 2020-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811394609.6A Active CN109226650B (en) | 2018-11-20 | 2018-11-20 | Forming die for cold extrusion processing of gear shaft and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109226650B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110576138A (en) * | 2019-10-09 | 2019-12-17 | 如皋市大生线路器材有限公司 | composite insulator ball socket forging die and forging process |
| CN115301799B (en) * | 2022-08-09 | 2025-10-28 | 绵阳市天铭机械有限公司 | Parking ratchet processing mold and parking ratchet detection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3540896A1 (en) * | 1985-11-18 | 1987-05-21 | Bohmter Maschf | CRUSHING DEVICE |
| CN202655371U (en) * | 2012-03-22 | 2013-01-09 | 张志平 | Cold extruding mould of gear shaft |
| CN207448672U (en) * | 2017-09-08 | 2018-06-05 | 北鹏首豪（天津）新型建材有限公司 | A kind of thermal insulation board shaving die |
| CN108326220A (en) * | 2018-04-20 | 2018-07-27 | 盐城市金洲机械制造有限公司 | A kind of gear shaft precision forging mold and manufacturing process |
| CN108380688A (en) * | 2018-02-08 | 2018-08-10 | 江苏海宇机械有限公司 | Splined shaft cold extrusion processing mold and processing method |
| CN207756733U (en) * | 2018-01-17 | 2018-08-24 | 东莞市精扩展实业有限公司 | A motor shaft stamping die |
-
2018
- 2018-11-20 CN CN201811394609.6A patent/CN109226650B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3540896A1 (en) * | 1985-11-18 | 1987-05-21 | Bohmter Maschf | CRUSHING DEVICE |
| CN202655371U (en) * | 2012-03-22 | 2013-01-09 | 张志平 | Cold extruding mould of gear shaft |
| CN207448672U (en) * | 2017-09-08 | 2018-06-05 | 北鹏首豪（天津）新型建材有限公司 | A kind of thermal insulation board shaving die |
| CN207756733U (en) * | 2018-01-17 | 2018-08-24 | 东莞市精扩展实业有限公司 | A motor shaft stamping die |
| CN108380688A (en) * | 2018-02-08 | 2018-08-10 | 江苏海宇机械有限公司 | Splined shaft cold extrusion processing mold and processing method |
| CN108326220A (en) * | 2018-04-20 | 2018-07-27 | 盐城市金洲机械制造有限公司 | A kind of gear shaft precision forging mold and manufacturing process |
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|---|---|
| CN109226650A (en) | 2019-01-18 |
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Address after: 523000 1st floor, No.78 SANHENG Road, Wentang brick kiln Industrial Zone, Dongcheng Street, Dongguan City, Guangdong Province Patentee after: Guangdong Zhengpin Intelligent Technology Co.,Ltd. Address before: 523121 1st floor, No.78 SANHENG Road, Wentang brick kiln Industrial Zone, Dongcheng Street, Dongguan City, Guangdong Province Patentee before: DONGGUAN ZHENGPIN HARDWARE ELECTRONIC Co.,Ltd. |
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