CN105710619A - Low-cost and high-efficiency machining method for cycloid gears - Google Patents
Low-cost and high-efficiency machining method for cycloid gears Download PDFInfo
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- CN105710619A CN105710619A CN201510756618.5A CN201510756618A CN105710619A CN 105710619 A CN105710619 A CN 105710619A CN 201510756618 A CN201510756618 A CN 201510756618A CN 105710619 A CN105710619 A CN 105710619A
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- cycloid
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000003754 machining Methods 0.000 title claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000010791 quenching Methods 0.000 claims abstract description 13
- 230000000171 quenching effect Effects 0.000 claims abstract description 13
- 238000005461 lubrication Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000000137 annealing Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 32
- 238000007127 saponification reaction Methods 0.000 claims description 16
- 238000003672 processing method Methods 0.000 claims description 13
- 238000005422 blasting Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000005255 carburizing Methods 0.000 claims description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000005496 tempering Methods 0.000 abstract description 5
- 238000005498 polishing Methods 0.000 abstract description 4
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- MFXMOUUKFMDYLM-UHFFFAOYSA-L zinc;dihydrogen phosphate Chemical compound [Zn+2].OP(O)([O-])=O.OP(O)([O-])=O MFXMOUUKFMDYLM-UHFFFAOYSA-L 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a low-cost and high-efficiency machining method for cycloid gears. The method is characterized by comprising the following process steps that (1) round metal billets are selected as raw materials; (2) the round billets are subjected to normalizing treatment; (3) the round billets are subjected to gear broaching; (4) the billets are subjected to phosphating and saponifying treatment in sequence; (5) the billets are subjected to oil film lubrication and extrusion machining; (6) annealing is carried out; (7) the step (4) and (5) are repeated; (8) auxiliary holes of the billets are machined with a cycloid as the benchmark; (9) quenching treatment is carried out; (10) tempering treatment is carried out; (11) workpieces are subjected to finishing machining; and (12) polishing treatment is carried out. According to the method, the cycloid gears are subjected to extrusion machining for two times through the oil film lubrication and extrusion technology; the cycloid gears are subjected to polishing treatment through abrasive flow machining technology; the machined cycloid gears are low in surface roughness and high in dimensional accuracy; and the machining efficiency of the cycloid gears is remarkably improved, and the machining cost is reduced.
Description
Technical field
The invention belongs to Gear Processing field, particularly relate to a kind of cycloid gear low-cost high-efficiency processing method.
Background technology
Development Robot industry, for promoting conventional industries transition and upgrade, it is achieved innovation drives development, of far-reaching significance.Along with Robot industry is put into the key strategy of " made in China 2025 ", Ministry of Industry and Information take the lead formulate " Robot industry " 13 " development plan (exposure draft) " tentatively draft, China Robot industry welcome great strategic development opportunity.Data show, past 5 years, China robot market with average annual 36% speed increment, last year, the industrial robot sales volume of Chinese market surged 54%, reached 5.6 ten thousand, became the whole world maximum industrial robot demand state.
The research and development of industrial robot, manufacture and application are the important symbols weighing a national science and technology innovation and high-end manufacture strength with level, and precision speed reduction device is the functional part of most critical in industrial robot, it is the vital application link of Robot industry chain, is also one of bottleneck restricting China's Robot industry development at present.
Its cost accounts for the 30%～40% of whole robot building cost, and the precision speed reduction device of high cost constrains machine man-based development further.Cycloid gear is RV decelerator vital part, the transmission accuracy of its processing precision direct influence RV decelerator.And corporate boss to adopt high-precision grinder that cycloid gear is processed at present, its processing cost is high, and efficiency is low, considerably increases the manufacturing cost of decelerator.
Summary of the invention
The invention aims to solve above-mentioned the deficiencies in the prior art, and the processing method that a kind of low cost, high-precision cycloid gear are provided.
According to technical scheme provided by the invention, described cycloid gear low-cost high-efficiency processing method, it is characterized in that, comprise the following steps that:
(1) select the round metal blank of tool some strength toughness and wearability as raw material；
(2) circle blank is carried out normalized treatment, take out from stove and cool down in atmosphere；
(3) draw tooth to process the round blank after normalized treatment, obtain cycloidal tooth profile；
(4) blank after drawing tooth processing is carried out phosphatization and saponification successively in Phosphating Solution and saponification liquor to process；
(5) adopt extrusion die, on forcing press, blank is carried out film lubrication extrusion process and obtain cycloid gear blank；
(6) blank that step (5) obtains is carried out stress relief annealing process；
(7) blank after step (6) being processed repeats step (4) and step (5)；
(8) via hole of blank is processed with cycloid for benchmark；
(9) workpiece that step (8) obtains is lain in bin carries out Quenching Treatment；
(10) workpiece after step (9) being processed carries out temper, to eliminate stress；
(11) workpiece after step (10) being processed carries out finished machined, to improve workpiece accuracy and to reduce surface roughness；
(12) workpiece after step (11) being processed is processed by shot blasting in abrasive flow machining device.
Further, drawing tooth processing in described step (3) is that blank first carries out dead eye processing, then draws tooth to process blank with dead eye location.
Further, in described step (5), film lubrication extruding refers to the extrusion process having small oil leab in press mold.
Further, in described step (8), via hole processing includes the processing of circular hole and irregularly-shaped hole
Further, when workpiece material is mild steel in described step (9), carburizing and quenching process need to be carried out.
Further, the time that in described step (12), workpiece is processed by shot blasting in abrasive flow machining device is 10～30 seconds.
The present invention is relative to existing cycloid gear process technology, and advantage shows: adopting film lubrication extruding that cycloid gear is processed, the cycloid gear surface smoothness after extruding is high, and stock size precision, up to T8～9 grade, is only second to finishing polish surface.And greatly reducing raw-material consumption, productivity ratio is high, reduces the production cost of cycloid gear, is particularly suitable for the part that production lot is big.And workpiece has been carried out 2 film lubrication extrusion processes, it is possible to eliminate because of after cycloid gear heat treatment internal stress release and cause cycloid gear deformation, it is ensured that the machining accuracy of cycloid gear.Adopt Abrasive Flow Machining that cycloid gear is processed by shot blasting, Abrasive Flow Machining is particularly suitable for the skin processing of the precision components such as cycloid gear and abnormal curved surface, relative to using high-precision grinder, cycloid gear is carried out roll flute processing, it is possible to significantly reduce its processing cost and improve its working (machining) efficiency.The problems such as it is more complicated that the present invention can efficiently solve cycloid gear prior art production technology, relatively costly, inefficient, are a kind of cycloid gear processing methods practical, effective.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention；
Fig. 2 is the cycloid gear structural representation of film lubrication of the present invention extruding；
Fig. 3 is the cycloid gear structural representation after the present invention machines；
In figure, 1 is dead eye, and 2 is circular hole, and 3 is cycloid, and 4 is irregularly-shaped hole.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the invention will be further described.
Embodiment one
A kind of cycloid gear low-cost high-efficiency processing method, comprises the following steps that:
(1) select the good No. 45 steel round blank material of comprehensive mechanical property as raw material；
(2) normalizing: heating, to 920 DEG C, is incubated 1 hour, is as cold as 600 DEG C soon and is incubated 1 hour, take out and cool down in atmosphere from stove；
(3) the round blank after normalized treatment is carried out dead eye 1 to process, then position with dead eye 1 and draw tooth to process blank, obtain cycloid 3 profile of tooth (as shown in Figure 2)；
(4) blank after drawing tooth processing is carried out phosphatization and saponification successively in Phosphating Solution and saponification liquor to process, Phosphating Solution component is: zinc dihydrogen phosphate 60 g/l and zinc nitrate 110 g/l, Phosphating Solution temperature is 70 DEG C, carrying out phosphatization in the Phosphating Solution prepared by putting into after workpiece washing totally good for pickling, the process time is 20 minutes；Saponification liquor is the sodium stearate of 120 g/l, and saponification liquor temperature is 70 DEG C, proceeds by saponification operation by putting into after workpiece washing totally good for phosphatization in saponification pond, and the process time is 15 minutes；
(5) adopt extrusion die, on forcing press, blank is carried out film lubrication extrusion process and obtain cycloid gear blank；
(6) blank that step (5) obtains is carried out stress relief annealing process, temperature 600 DEG C, temperature retention time 7 hours, then furnace cooling is to 200 DEG C, comes out of the stove；
(7) blank after step (6) being processed repeats step (4) and step (5)；
(8) for benchmark, the via hole (circular hole 2 and irregularly-shaped hole 4) of blank is processed (Fig. 3) with cycloid；
(9) quenching: lie on bin by the workpiece that step (8) obtains, processes 2 hours in 900 DEG C, drops to 840 DEG C of quenchings of coming out of the stove, and quenching oil temperature is 90 DEG C, and the working surface hardness after quenching reaches HRC55；
(10) tempering: the workpiece after step (9) being processed was 600 DEG C of tempering 80 minutes, to eliminate stress；
(11) workpiece after step (10) being processed carries out finished machined；
(12) workpiece after step (11) being processed is processed by shot blasting in abrasive flow machining device, and polishing time is 10 seconds.
Embodiment two
A kind of cycloid gear low-cost high-efficiency processing method, comprises the following steps that:
(1) select the 20CrMnTi alloyed steel round billet material with higher-strength and toughness as raw material；
(2) normalizing: heating, to 930 DEG C, is incubated 2 hours, is as cold as 600 DEG C soon and is incubated 3 hours, take out and cool down in atmosphere from stove；
(3) the round blank after normalized treatment is carried out dead eye 1 to process, then position with dead eye 1 and draw tooth to process blank, obtain cycloid 3 profile of tooth (as shown in Figure 2)；
(4) blank after drawing tooth processing is carried out phosphatization and saponification successively in Phosphating Solution and saponification liquor to process, Phosphating Solution component is: zinc dihydrogen phosphate 60 g/l and zinc nitrate 110 g/l, Phosphating Solution temperature is 80 DEG C, carrying out phosphatization in the Phosphating Solution prepared by putting into after workpiece washing totally good for pickling, the process time is 13 minutes；Saponification liquor is the sodium stearate of 120 g/l, and saponification liquor temperature is 80 DEG C, proceeds by saponification operation by putting into after workpiece washing totally good for phosphatization in saponification pond, and the process time is 5 minutes；
(5) adopt extrusion die, on forcing press, blank is carried out film lubrication extrusion process and obtain cycloid gear blank；
(6) blank that step (5) obtains is carried out stress relief annealing process, temperature 150 DEG C, temperature retention time 12 hours, air cooling of coming out of the stove；
(7) blank after step (6) being processed repeats step (4) and step (5)；
(8) for benchmark, the via hole (circular hole 2 and irregularly-shaped hole 4) of blank is processed (such as Fig. 3) with cycloid；
(9) carburizing and quenching: lie on bin by the workpiece that step (8) obtains, processes 2 hours in 900 DEG C, drops to 840 DEG C of quenchings of coming out of the stove, and quenching oil temperature is 90 DEG C, and the working surface hardness after quenching reaches HRC58, core hardness HRC40；
(10) tempering: the workpiece after step (9) being processed was 200 DEG C of tempering 80 minutes, to eliminate stress；
(11) workpiece after step (10) being processed carries out finished machined；
(12) workpiece after step (11) being processed is processed by shot blasting in abrasive flow machining device, and polishing time is 30 seconds.
The above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within the protection domain of the claims in the present invention.
Claims (6)
1. a cycloid gear low-cost high-efficiency processing method, is characterized in that, comprises the following steps that:
(1) select the round metal blank of tool some strength toughness and wearability as raw material；
(2) circle blank is carried out normalized treatment, take out from stove and cool down in atmosphere；
(3) draw tooth to process the round blank after normalized treatment, obtain cycloidal tooth profile；
(4) blank after drawing tooth processing is carried out phosphatization and saponification successively in Phosphating Solution and saponification liquor to process；
(5) adopt extrusion die, on forcing press, blank is carried out film lubrication extrusion process and obtain cycloid gear blank；
(6) blank that step (5) obtains is carried out stress relief annealing process；
(7) blank after step (6) being processed repeats step (4) and step (5)；
(8) via hole of blank is processed with cycloid for benchmark；
(9) workpiece that step (8) obtains is lain in bin carries out Quenching Treatment；
(10) workpiece after step (9) being processed carries out temper；
(11) workpiece after step (10) being processed carries out finished machined；
(12) workpiece after step (11) being processed is processed by shot blasting in abrasive flow machining device.
2. cycloid gear low-cost high-efficiency processing method according to claim 1, is characterized in that: drawing tooth processing in described step (3) is that blank first carries out dead eye processing, then draws tooth to process blank with dead eye location.
3. cycloid gear low-cost high-efficiency processing method according to claim 1, is characterized in that: in described step (5), film lubrication extruding refers to the extrusion process having small oil leab in press mold.
4. cycloid gear low-cost high-efficiency processing method according to claim 1, is characterized in that: in described step (8), via hole processing includes the processing of circular hole and irregularly-shaped hole.
5. cycloid gear low-cost high-efficiency processing method according to claim 1, is characterized in that: when workpiece material is mild steel in described step (9), need to carry out carburizing and quenching process.
6. cycloid gear low-cost high-efficiency processing method according to claim 1, is characterized in that: the time that in described step (12), workpiece is processed by shot blasting in abrasive flow machining device is 10～30 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510756618.5A CN105710619B (en) | 2015-11-06 | 2015-11-06 | A kind of cycloid gear low-cost high-efficiency processing method |
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| CN201510756618.5A CN105710619B (en) | 2015-11-06 | 2015-11-06 | A kind of cycloid gear low-cost high-efficiency processing method |
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| CN105710619A true CN105710619A (en) | 2016-06-29 |
| CN105710619B CN105710619B (en) | 2017-11-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425340A (en) * | 2016-07-15 | 2017-02-22 | 华南理工大学 | Non-traditional machining method of RV cycloid gear |
| CN112264772A (en) * | 2020-09-25 | 2021-01-26 | 重庆市巨力冶金制品有限公司 | Preparation and processing method of oil pump driving gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1247364A (en) * | 1968-05-18 | 1971-09-22 | Raleigh Industries Ltd | Production of components |
| US4432811A (en) * | 1981-10-08 | 1984-02-21 | Vereinigte Edelstahlwerke Aktiengesellschaft | Method of making seamless tubing |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN102861861A (en) * | 2011-07-06 | 2013-01-09 | 张太良 | Precision-forging plastic molding technology of bell shell of ball-cage type universal joint |
| CN104400364A (en) * | 2014-10-10 | 2015-03-11 | 四川华庆机械有限责任公司 | Extrusion processing method for external star wheel |
-
2015
- 2015-11-06 CN CN201510756618.5A patent/CN105710619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1247364A (en) * | 1968-05-18 | 1971-09-22 | Raleigh Industries Ltd | Production of components |
| US4432811A (en) * | 1981-10-08 | 1984-02-21 | Vereinigte Edelstahlwerke Aktiengesellschaft | Method of making seamless tubing |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN102861861A (en) * | 2011-07-06 | 2013-01-09 | 张太良 | Precision-forging plastic molding technology of bell shell of ball-cage type universal joint |
| CN104400364A (en) * | 2014-10-10 | 2015-03-11 | 四川华庆机械有限责任公司 | Extrusion processing method for external star wheel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425340A (en) * | 2016-07-15 | 2017-02-22 | 华南理工大学 | Non-traditional machining method of RV cycloid gear |
| CN112264772A (en) * | 2020-09-25 | 2021-01-26 | 重庆市巨力冶金制品有限公司 | Preparation and processing method of oil pump driving gear |
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| Publication number | Publication date |
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| CN105710619B (en) | 2017-11-07 |
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Address after: Building A, 5th Floor, Building 1, Boda Science and Technology Innovation Park, No. 4 Chuangxing Avenue, High tech Industrial Development Zone, Qingyuan City, Guangdong Province, 511520 Patentee after: GUANGDONG ZHONGSHENG HUAKONG INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 510031 Room 10, 20th Floor, Dongzhao Building, 515 Dongfeng Middle Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG ZHONGSHENG HUAKONG INTELLIGENT TECHNOLOGY Co.,Ltd. |
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