CN102563010B - Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof - Google Patents
Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof Download PDFInfo
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- CN102563010B CN102563010B CN201210033241.7A CN201210033241A CN102563010B CN 102563010 B CN102563010 B CN 102563010B CN 201210033241 A CN201210033241 A CN 201210033241A CN 102563010 B CN102563010 B CN 102563010B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005242 forging Methods 0.000 title abstract 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000003754 machining Methods 0.000 claims abstract description 7
- 238000005255 carburizing Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 238000007514 turning Methods 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- Forging (AREA)
- Gears, Cams (AREA)
Abstract
The invention provides a bevel gear with an inner hole having a symmetrical inner round head flat keyway structure, and a precision forging process of the bevel gear as well as a mould punch of the bevel gear, relates to a metal product and a preparation method of the metal product, in particular to the bevel gear and the precision forging process as well as the mould of the bevel gear. The inner hole of the bevel gear is provided with two flat key keyways, the flat key keyways do not penetrate through the inner hole and are symmetrical relative to an axis of the inner hole, and the keyway bottom of the flat key keyways is a semi-cylindrical cambered surface. The precision forging process flow comprises the following steps: baiting; truning sheet stamping; intermediate frequency heating; preforming; coarse forming; shot blasting; intermediate frequency heating; precision forming; machining; and carburizing quenching heat processing. A forming part of the top end of the precision forging mould punch is conjoined-arranged, and is heaved with a shape of a capital Greek letter phi. The bevel gear, the precision forging process and the mould punch disclosed by the invention have the advantages that the strength and the precision of the product per se are improved, the connection strength and the connection precision of the product are improved, and the productivity is increased.
Description
Technical field
The present invention relates to a kind of fabricated metals and preparation method thereof, especially a kind of umbrella gear and its finish forge method and mould thereof.
Background technique
Semi-dragging truck supporting leg must support railway carriage and the goods of hundred tons, and supporting leg lifting relies on one group of driving gear to complete, so each the design of gears requirement of strength in this driving gear set is very high.Umbrella gear 1 as shown in Figure of description 1 is a gear in this driving gear set, and the endoporus 2 of umbrella gear 1 has two flat key keyways 3.Flat key keyway 3 does not run through endoporus 2.The size of two flat key keyways 3, shape are all identical, and symmetrical with respect to endoporus 2 axis.The traditional processing method of this product is that after casting, cutting obtains, and turning processing endoporus 2 after casting, then uses end mill Milling Process flat key keyway 3.Because of method for milling restriction, bottom land can only be for tack shape, as Fig. 2.Because umbrella gear 1 and the vertical shaft that inserts endoporus 2 are fixed by cylindrical pin, therefore, cylindrical pin is that arc surface connects with plane with connecting of flat key keyway 3, can only be line contact, and cutting is difficult to guarantee that two flat key keyways 3 are accurately symmetrical with respect to endoporus 2 axis.This is disadvantageous to gear driven vertical shaft rotary.Meanwhile, with the umbrella gear product that casting method is shaped, have the defects such as shrinkage porosite, pore, intensity and precision are obviously not enough, time have broken teeth situation to occur.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of surface of contact that can increase pin and keyway is provided, the endoporus that improves product strength has umbrella gear and finish forge method and the mold and punching head of the flat keyway arrangements of symmetrical inner round head.
Technical solution of the present invention is:
Endoporus has the umbrella gear of the flat keyway arrangements of symmetrical inner round head, and the endoporus of umbrella gear has two flat key keyways, and flat key keyway does not run through endoporus, and symmetrical with respect to interior axially bored line, it is characterized in that: the bottom land of flat key keyway is semicolumn cambered surface.
The method flow that the above-mentioned endoporus of finish forge has the umbrella gear of the flat keyway arrangements of symmetrical inner round head is: blanking → cylindrical turning base → heating in medium frequency → preforming → dumming → ball blast → heating in medium frequency → essence shaping → cutting → carburizing and quenching.
Say further, be further characterized in that the tooth portion location that is shaped, after preforming during dumming, with preforming blank, be positioned over mould location, counterdie die cavity school, when final essence is shaped, for preventing tooth forming dislocation, mould location correcting in school at the bottom of the semicolumn arch groove of two flat key keyways of employing.
The mold and punching head for the above-mentioned endoporus of finish forge with the umbrella gear of the flat keyway arrangements of symmetrical inner round head, it is characterized in that: drift top shaped portion is " ф " shape projection, both sides keyway shaped portion is symmetrical with respect to the cylinder table axis in compacting correcting hole, symmetrical precision is higher than product requirement precision, both sides keyway shaped portion and cylinder table are conjuncted setting, the top of two keyway shaped portions is semicolumn cambered surface, cylinder table top is higher than keyway shaped portion and with cone angle, cone angle is 112 °～120 °, and frustum height is not less than 4 millimeters.
The present invention adopts the manufacture of finish forge method, has improved intensity and the precision of product self; Improve keyway shape, change pin and contact with keyway line as arc surface contact, increase the surface of contact of pin and keyway, improve the linking intensity of product; Adopt production method provided by the invention and mold and punching head, product both sides keyway and correcting hole are integrally formed, and productivity can improve more than 3 times, has guaranteed the symmetrical precision of keyway and product axis hole axis, connect precision and increase substantially; The round platform cone angle of finish forge mould drift during than this product axis hole of drilling drill bit cone angle used bigger, the hole guide-localization that while having guaranteed boring, drill bit extrudes by this drift, thus guarantee the symmetry of two keyways and axis hole, guarantee the coaxial of axis hole and gear size simultaneously.
Accompanying drawing explanation
Fig. 1 is existing semi-dragging truck supporting leg elevator mechanism umbrella gear structural representation.
Fig. 2 is the C-C cut-away view of Fig. 1.
Fig. 3 is umbrella gear structural representation of the present invention.
Fig. 4 is the A-A cut-away view of Fig. 3.
Fig. 5 is the inventive method flow chart.
Fig. 6 is mold and punching head structural representation of the present invention.
Fig. 7 is mold and punching head worm's eye view of the present invention.
Below in conjunction with accompanying drawing, the present invention is described in detail.
In figure: 1, umbrella gear, 2, endoporus, 3, flat key keyway, 4, mold and punching head, 5, cylinder table, 6, keyway shaped portion, 7, frustum.
Below in conjunction with accompanying drawing, the present invention is elaborated.
Embodiment
Endoporus has the umbrella gear 1 of the flat keyway arrangements of symmetrical inner round head, the endoporus 2 of umbrella gear 1 has two flat key keyways 3, flat key keyway 3 does not run through endoporus 2, the size of two flat key keyways 3, shape are all identical, and symmetrical with respect to endoporus 2 axis, degree of symmetry value is less than 0.2 millimeter, and the bottom land of flat key keyway 3 is semicolumn cambered surface.
The method flow that the above-mentioned endoporus of finish forge has the umbrella gear 1 of the flat keyway arrangements of symmetrical inner round head is: blanking → cylindrical turning base → heating in medium frequency → preforming → dumming → ball blast → heating in medium frequency → essence shaping → cutting → carburizing and quenching.
Concrete technology step is:
1, blanking, by 120% of product actual weight;
2, cylindrical turning base, removes bar surface scale and surface imperfection;
3, heating in medium frequency, is heated to 1100-1200 ℃ by bar;
4, preforming, puts into counterdie by the bar after heating, with the friction screw presses of 400 tons, bar is pressed into profile of tooth blank, and extrudes keyway positioning pit;
5, dumming, after preforming, blank is put into the counterdie of dumming immediately, with preforming blank, to counterdie die cavity school mould location, uses 400 tons of friction screw presses to make profile of tooth and keyway dumming;
6, ball blast, the scale of removing rough forge part;
7, heating in medium frequency, is heated to 800-900 ℃ by blank after ball blast;
8, essence is shaped, and the blank after heating is put into counterdie, at the bottom of the semicolumn arch groove of two flat key keyways of employing dumming, mould is located to correcting, uses 400 tons of press machinees that profile of tooth and keyway essence are shaped;
9, bore bore hole, along guiding hole machining drilling bore;
10, cylindrical turning end face, with tooth die clamper clamping, machining gear face fixed length cylindrical turning, last machining boring bore;
11, carburizing and quenching, carburized layer depth 0.35-0.6mm, surface hardness 35-45HRC.
The mold and punching head 4 for the above-mentioned endoporus of finish forge with the umbrella gear 1 of the flat keyway arrangements of symmetrical inner round head, it is characterized in that: drift 4 top shaped portions are " φ " shape projection, both sides keyway shaped portion 6 is symmetrical with respect to cylinder table 5 axis in compacting correcting hole, symmetrical precision is higher than product requirement precision, both sides keyway shaped portion 6 is conjuncted setting with cylinder table 5, the top of two keyway shaped portions 6 is semicolumn cambered surface, cylinder table 5 tops are higher than keyway shaped portion and with cone angle, cone angle is 112 °～120 °, and frustum 7 is highly not less than 4 millimeters.
Claims (4)
1. an endoporus has the umbrella gear finish forge method of the flat keyway arrangements of symmetrical inner round head, the endoporus of umbrella gear has two flat key keyways, flat key keyway does not run through endoporus, and is less than 0.2 millimeter with respect to the degree of symmetry value of interior axially bored line symmetry, and the bottom land of flat key keyway is semicolumn cambered surface; It is characterized in that: the technological process that endoporus has the umbrella gear of the flat keyway arrangements of symmetrical inner round head is blanking → cylindrical turning base → heating in medium frequency → preforming → dumming → ball blast → heating in medium frequency → essence shaping → cutting → carburizing and quenching.
2. according to a kind of endoporus claimed in claim 1, there is the umbrella gear finish forge method of the flat keyway arrangements of symmetrical inner round head, it is characterized in that: tooth portion is shaped and locates, after preforming during dumming, with preforming blank, be positioned over film location, counterdie die cavity school, when final essence is shaped, for preventing tooth forming dislocation, mould location correcting in school at the bottom of the semicolumn arch groove of two flat key keyways of employing.
3. according to a kind of endoporus claimed in claim 1, there is the umbrella gear finish forge method of the flat keyway arrangements of symmetrical inner round head, it is characterized in that: concrete technology step is:
(1) blanking, by 120% of product actual weight;
(2) cylindrical turning base, removes bar surface scale and surface imperfection;
(3) heating in medium frequency, is heated to 1100-1200 ℃ by bar;
(4) preforming, puts into counterdie by the bar after heating, with the friction screw presses of 400 tons, bar is pressed into profile of tooth blank, and extrudes keyway positioning pit;
(5) dumming, after preforming, blank is put into the counterdie of dumming immediately, with preforming blank, to counterdie die cavity school mould location, uses 400 tons of friction screw presses to make profile of tooth and keyway dumming;
(6) ball blast, the scale of removing rough forge part;
(7) heating in medium frequency, is heated to 800-900 ℃ by blank after ball blast;
(8) essence is shaped, and the blank after heating is put into counterdie, at the bottom of the semicolumn arch groove of two flat key keyways of employing dumming, mould is located to correcting, uses 400 tons of press machinees that profile of tooth and keyway essence are shaped;
(9) bore bore hole, along guiding hole machining drilling bore;
(10) cylindrical turning end face, with tooth die clamper clamping, machining gear face fixed length cylindrical turning, last machining boring bore;
(11) carburizing and quenching, carburized layer depth 0.35-0.6 millimeter, surface hardness 35-45HRC.
4. for finish forge endoporus claimed in claim 1, there is the mold and punching head of the umbrella gear of the flat keyway arrangements of symmetrical inner round head, it is characterized in that: drift top shaped portion is " φ " shape projection, the strong groove shaped portion in both sides is symmetrical with respect to the cylinder table axis in compacting correcting hole, symmetrical precision is higher than product requirement precision, degree of symmetry requires to be less than 0.2 millimeter, both sides keyway shaped portion and cylinder table are conjuncted setting, the top of two keyway shaped portions is semicolumn cambered surface, cylinder table top is higher than keyway shaped portion and with cone angle, cone angle is 112 °～120 °, frustum height is not less than 4 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210033241.7A CN102563010B (en) | 2012-02-15 | 2012-02-15 | Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210033241.7A CN102563010B (en) | 2012-02-15 | 2012-02-15 | Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof |
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| Publication Number | Publication Date |
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| CN102563010A CN102563010A (en) | 2012-07-11 |
| CN102563010B true CN102563010B (en) | 2014-08-27 |
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| CN201210033241.7A Active CN102563010B (en) | 2012-02-15 | 2012-02-15 | Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495691B (en) * | 2013-08-08 | 2016-06-29 | 兴城市粉末冶金有限公司 | A kind of forging double-drive-axle triple gear anti-oxidation method |
| CN103769826A (en) * | 2014-01-20 | 2014-05-07 | 吉林大学 | Precise forming method for cylindrical straight gear and device thereof |
| CN106271470A (en) * | 2016-08-02 | 2017-01-04 | 盐城市鑫海机械有限公司 | A kind of processing method of balance shaft gear |
| CN108188673A (en) * | 2018-02-06 | 2018-06-22 | 山东金马工业集团股份有限公司 | A kind of gear member forging technology for improving product qualification rate |
| CN114472782B (en) * | 2022-02-14 | 2022-11-22 | 章丘市宝华锻造有限公司 | Forging process for output gear shaft |
| CN114918617B (en) * | 2022-05-20 | 2023-09-26 | 通亦和精工科技(无锡)股份有限公司 | Embossed seal processing technology for mould lettering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113198A (en) * | 1994-03-31 | 1995-12-13 | 乔斯特国际有限公司 | Landing gear for semitrailers |
| JP2009285716A (en) * | 2008-05-30 | 2009-12-10 | Musashi Seimitsu Ind Co Ltd | Method for forging bevel gear |
| CN202431877U (en) * | 2011-12-26 | 2012-09-12 | 王沐海 | Bevel gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11138232A (en) * | 1997-11-06 | 1999-05-25 | Toyota Motor Corp | Forging method of gear and gear forging method for correcting phase shift |
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2012
- 2012-02-15 CN CN201210033241.7A patent/CN102563010B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113198A (en) * | 1994-03-31 | 1995-12-13 | 乔斯特国际有限公司 | Landing gear for semitrailers |
| JP2009285716A (en) * | 2008-05-30 | 2009-12-10 | Musashi Seimitsu Ind Co Ltd | Method for forging bevel gear |
| CN202431877U (en) * | 2011-12-26 | 2012-09-12 | 王沐海 | Bevel gear |
Non-Patent Citations (2)
| Title |
|---|
| 田福祥等.螺旋伞齿轮闭式精锻新工艺.《热加工工艺》.2004,(第1期), |
| 螺旋伞齿轮闭式精锻新工艺;田福祥等;《热加工工艺》;20040131(第1期);第42-43页 * |
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| CN102563010A (en) | 2012-07-11 |
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Denomination of invention: Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof Effective date of registration: 20180212 Granted publication date: 20140827 Pledgee: Bank of China Limited by Share Ltd. Dafeng branch Pledgor: JIANGSU CHUANGYI PRECISION FORGING Co.,Ltd. Registration number: 2018320010009 |
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Date of cancellation: 20190212 Granted publication date: 20140827 Pledgee: Bank of China Limited by Share Ltd. Dafeng branch Pledgor: JIANGSU CHUANGYI PRECISION FORGING Co.,Ltd. Registration number: 2018320010009 |
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Denomination of invention: Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof Effective date of registration: 20190212 Granted publication date: 20140827 Pledgee: Bank of China Limited by Share Ltd. Dafeng branch Pledgor: JIANGSU CHUANGYI PRECISION FORGING Co.,Ltd. Registration number: 2019320000088 |
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Date of cancellation: 20200109 Granted publication date: 20140827 Pledgee: Bank of China Limited by Share Ltd. Dafeng branch Pledgor: JIANGSU CHUANGYI PRECISION FORGING Co.,Ltd. Registration number: 2019320000088 |
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Denomination of invention: Bevel gear with inner hole having symmetrical inner round head flat keyway structure and precision forging process as well as mould punch thereof Effective date of registration: 20200115 Granted publication date: 20140827 Pledgee: Bank of China Limited by Share Ltd. Dafeng branch Pledgor: JIANGSU CHUANGYI PRECISION FORGING Co.,Ltd. Registration number: Y2020320000054 |
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Effective date of registration: 20220801 Address after: 224100 No. 8, West Zone, Nanyang Town Industrial Park, Dafeng District, Yancheng City, Jiangsu Province Patentee after: Yancheng Dafeng Chuangyi precision forging gear Co.,Ltd. Address before: 224100 No. 5, Xikang South Road, Dafeng Development Zone, Yancheng City, Jiangsu Province Patentee before: JIANGSU CHUANGYI PRECISION FORGING Co.,Ltd. |
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