CN111590412A - Small gear machining process - Google Patents
Small gear machining process Download PDFInfo
- Publication number
- CN111590412A CN111590412A CN202010424164.2A CN202010424164A CN111590412A CN 111590412 A CN111590412 A CN 111590412A CN 202010424164 A CN202010424164 A CN 202010424164A CN 111590412 A CN111590412 A CN 111590412A
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- CN
- China
- Prior art keywords
- gear
- end faces
- inner hole
- honing
- processing
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
- B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
Abstract
A small gear processing technology relates to the technical field of gear processing, and the adopted technical scheme comprises the following procedures of 1, flat grinding of double end faces and flat grinding of two end faces of a gear; step 2, honing the inner hole, and carrying out multi-station production line type cooperative honing processing on the inner hole by coarse and fine processing; before the process 1, a process of turning two end faces of the gear is not carried out. The invention improves the processing efficiency of the end surfaces, is more beneficial to controlling the parallelism tolerance of the two end surfaces, and simultaneously reduces the residual grinding allowance of the gear due to the removal of the turning process, thereby reducing the cost; the honing inner hole adopts a multi-station composite and assembly line cooperative machining mode of firstly roughing and then finishing, so that the honing efficiency can be improved, a large amount of labor is saved, the indexes of roughness, roundness, cylindricity and the like of the inner hole can be effectively improved, and the consistency and the stability of the product quality can be ensured.
Description
Technical Field
The invention relates to the technical field of gear machining, in particular to a small gear machining process.
Background
When gears such as planet gears and the like with small inner holes and small external dimensions are machined on the end faces and the inner holes, the traditional machining mode is as follows: the two end faces of the gear are respectively turned and then respectively plain ground, and finally, the process of grinding the inner hole for multiple times is carried out. The process sets a turning step for processing the thickness between two end faces of the gear and the end face circle run-out tolerance, but the gear has more residual grinding allowance and needs to be processed on the two end faces respectively, so that the processing efficiency is lower; the process of grinding the inner hole for many times also needs to be carried out respectively, at least one machine and one worker are needed each time, and the machining precision is difficult to guarantee.
Disclosure of Invention
The invention provides a small gear machining process, aiming at the problems of more residual grinding allowance and lower multiple machining efficiency in the prior art.
The invention provides the following technical scheme: a small gear machining process comprises the following steps:
step 1, performing flat grinding on two end faces, and simultaneously performing flat grinding on two end faces of a gear;
step 2, honing the inner hole, and carrying out multi-station production line type cooperative honing processing on the inner hole by coarse and fine processing;
before the process 1, a process of turning two end faces of the gear is not carried out.
Preferably, before the process 1, the thickness between the two end faces of the gear is provided with a residual allowance.
As a specific embodiment, in step 1, both end faces of the gear are flat-ground using a double-ended grinding machine.
Preferably, the parallelism tolerance of the two end faces of the gear is <0.005mm after the process of step 1.
As a specific embodiment, in the process 2, the inner hole is honed using a multi-station vertical honing machine.
Preferably, after the step 2, the surface roughness of the inner hole of the gear is less than Ra0.4.
The invention has the beneficial effects that: 1. compared with the prior art that the two end surfaces of the gear are respectively turned and flat ground, the invention adopts the double-ended grinding machine to simultaneously carry out flat grinding operation on the two end surfaces of the gear, thereby improving the processing efficiency, being beneficial to controlling the parallelism tolerance of the two end surfaces, and simultaneously reducing the residual grinding allowance of the gear due to the removal of the turning process, thereby reducing the cost. 2. The honing inner hole adopts a multi-station composite and assembly line cooperative machining mode of firstly roughing and then finishing, so that the honing efficiency can be improved, a large amount of labor is saved, the indexes of roughness, roundness, cylindricity and the like of the inner hole can be effectively improved, and the consistency and the stability of the product quality can be ensured.
Drawings
FIG. 1 is a schematic view of a gear machining process according to one embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in more detail with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments of the present invention after studying the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a small gear machining process as shown in figure 1, which comprises the following steps:
step 1, performing flat grinding on two end faces, and simultaneously performing flat grinding on two end faces of a gear;
step 2, honing the inner hole, and carrying out multi-station production line type cooperative honing processing on the inner hole by coarse and fine processing;
before the process 1, a process of turning two end faces of the gear is not carried out.
The invention aims at improving the processing technology of two end surfaces and an inner hole of the gear in the prior art, particularly, the turning procedure is removed aiming at the end surfaces, and the two end surfaces of the gear are simultaneously subjected to flat grinding; aiming at the inner hole, carrying out multi-station production line type cooperative honing processing of roughing and finishing;
the turning and flat grinding processes are carried out on the end faces of the gear, the loss of the thickness between the two end faces of the gear is inevitably caused, and a certain allowance is reserved for the thickness between the two end faces of the gear before turning and flat grinding so that the size of a final product reaches a qualified standard. In the embodiment, for a 17-tooth M1.25 planetary gear with the thickness of 14mm, after a turning process is removed, the allowance reserved for the thickness of the gear before the process 1 is reduced from 0.2-0.25 mm to 0.04-0.06 mm, so that the consumption of consumables is reduced, the cost is reduced, the influence on the depth of an effective hardened layer of the gear is less, and the service life of the gear is prolonged; the two end faces of the gear are subjected to flat grinding simultaneously, the machining efficiency is improved by nearly one time, the parallelism tolerance of the two end faces is controlled, and in the embodiment, the parallelism tolerance of the two end faces is reduced to 0.005mm from 0.01mm before improvement.
In the step 2 of honing the inner hole, the gear is honed according to the sequence of rough machining and fine machining. In the embodiment, the allowance reserved before the process 2 for the thickness of the gear is reduced from 0.1-0.15 mm to 0.03-0.04 mm, the roughness can reach below Ra0.4, the roundness can reach below 0.004mm, and the cylindricity can reach below 0.005 mm.
Preferably, before the process 1, the thickness between the two end faces of the gear is provided with a residual allowance.
The flat grinding process can cause loss on the thickness between two end faces of the gear, so that before the process 1, the thickness between the two end faces of the gear is provided with a residual grinding allowance, and the thickness of the gear after the process 1 reaches the qualified standard of products. In the present embodiment, the loss amount of the thickness between the two end faces of the gear pair in the step 1 is 0.01 to 0.02mm, and therefore the residual wear allowance can be 0.02 mm.
As a specific embodiment, in step 1, both end faces of the gear are flat-ground using a double-ended grinding machine.
In the embodiment, a GMM700 high-precision double-end-face grinding machine can be selected to synchronously and finely grind two end faces of the gear, and a super-hard grinding disc such as diamond or CBN cubic boron nitride can be used, so that the grinding speed is 3-20 times faster than that of the traditional grinding mode.
Preferably, the parallelism tolerance of the two end faces of the gear is <0.005mm after the process of step 1.
In this embodiment, after the process of step 1, in order to ensure the accuracy and the assembly performance of the gear, as shown in fig. 1, the parallelism tolerance of the second end face of the gear with respect to the first end face is less than 0.005mm, and the reference surface a is the first end face.
As a specific embodiment, in the process 2, the inner hole is honed using a multi-station vertical honing machine.
In the embodiment, an RS06A type multi-station vertical hole honing machine can be selected, automatic control is adopted, a plurality of processing stations are arranged, each processing station is driven by an independent servo motor, different rotating speeds and torques can be obtained, and the hole honing machine is suitable for processing requirements from rough to fine in a sequential mode.
Preferably, after the step 2, the surface roughness of the inner hole of the gear is less than Ra0.4.
As shown in fig. 1, in this embodiment, after the treatment of step 2, the surface roughness of the inner hole of the gear can reach less than ra0.4, so as to meet the qualified requirement of the product.
The above is a description of one embodiment of the present invention in more detail and detail, but it should not be understood that the scope of the invention is limited thereby. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the spirit of the invention, which falls within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A small gear machining process is characterized in that: comprises the following steps of (a) carrying out,
step 1, performing flat grinding on two end faces, and simultaneously performing flat grinding on two end faces of a gear;
step 2, honing the inner hole, and carrying out multi-station production line type cooperative honing processing on the inner hole by coarse and fine processing;
before the process 1, a process of turning two end faces of the gear is not carried out.
2. A process for machining a small gear according to claim 1, wherein: before the step 1, the thickness between two end faces of the gear is provided with a residual grinding allowance.
3. A process for machining a small gear according to claim 2, wherein: in step 1, a double-ended grinding machine is used to perform flat grinding on both end faces of the gear.
4. A process for machining a small gear according to claim 3, wherein: after the treatment of the working procedure 1, the parallelism tolerance of the two end surfaces of the gear is less than 0.005 mm.
5. A process for machining a small gear according to claim 1, wherein: in the step 2, the inner hole is honed by using a multi-station vertical honing machine.
6. A process for machining a small gear according to claim 5, wherein: after the treatment of the working procedure 2, the surface roughness of the inner hole of the gear is less than Ra0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424164.2A CN111590412A (en) | 2020-05-19 | 2020-05-19 | Small gear machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424164.2A CN111590412A (en) | 2020-05-19 | 2020-05-19 | Small gear machining process |
Publications (1)
| Publication Number | Publication Date |
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| CN111590412A true CN111590412A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010424164.2A Pending CN111590412A (en) | 2020-05-19 | 2020-05-19 | Small gear machining process |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030022601A1 (en) * | 1999-12-22 | 2003-01-30 | Mitsuhiko Shimomura | Gear and method of manufacturing gear |
| CN1597239A (en) * | 2004-08-16 | 2005-03-23 | 苏州江城数控精密机械有限公司 | Small module arc tooth conical tooth processing technology and tool for honing pore |
| CN101905440A (en) * | 2009-09-28 | 2010-12-08 | 苏州信能精密机械有限公司 | High-precision high-efficiency three-position numerical control honing method and device |
| CN102513894A (en) * | 2011-12-06 | 2012-06-27 | 瓦房店冶矿轴承制造有限公司 | Method for grinding double end surfaces of self-aligning roller |
| CN103691958A (en) * | 2013-12-06 | 2014-04-02 | 无锡市德力流体科技有限公司 | Powdered metallurgical gear processing technology |
| CN203945216U (en) * | 2014-06-19 | 2014-11-19 | 广州市敏嘉制造技术有限公司 | A kind of vertical high precision double-ended grinding machine |
| JP2015134387A (en) * | 2014-01-17 | 2015-07-27 | 清和鉄工株式会社 | honing processing method of gear |
| CN105583591A (en) * | 2016-03-21 | 2016-05-18 | 江阴市科安传动机械有限公司 | Machining process for small-module spiral bevel gear |
| CN109531080A (en) * | 2018-10-23 | 2019-03-29 | 浙江吉智新能源汽车科技有限公司 | A kind of automobile gearbox gear processing technology |
| CN110405429A (en) * | 2018-04-28 | 2019-11-05 | 王成 | A kind of Gearmaking Technology |
-
2020
- 2020-05-19 CN CN202010424164.2A patent/CN111590412A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030022601A1 (en) * | 1999-12-22 | 2003-01-30 | Mitsuhiko Shimomura | Gear and method of manufacturing gear |
| CN1597239A (en) * | 2004-08-16 | 2005-03-23 | 苏州江城数控精密机械有限公司 | Small module arc tooth conical tooth processing technology and tool for honing pore |
| CN101905440A (en) * | 2009-09-28 | 2010-12-08 | 苏州信能精密机械有限公司 | High-precision high-efficiency three-position numerical control honing method and device |
| CN102513894A (en) * | 2011-12-06 | 2012-06-27 | 瓦房店冶矿轴承制造有限公司 | Method for grinding double end surfaces of self-aligning roller |
| CN103691958A (en) * | 2013-12-06 | 2014-04-02 | 无锡市德力流体科技有限公司 | Powdered metallurgical gear processing technology |
| JP2015134387A (en) * | 2014-01-17 | 2015-07-27 | 清和鉄工株式会社 | honing processing method of gear |
| CN203945216U (en) * | 2014-06-19 | 2014-11-19 | 广州市敏嘉制造技术有限公司 | A kind of vertical high precision double-ended grinding machine |
| CN105583591A (en) * | 2016-03-21 | 2016-05-18 | 江阴市科安传动机械有限公司 | Machining process for small-module spiral bevel gear |
| CN110405429A (en) * | 2018-04-28 | 2019-11-05 | 王成 | A kind of Gearmaking Technology |
| CN109531080A (en) * | 2018-10-23 | 2019-03-29 | 浙江吉智新能源汽车科技有限公司 | A kind of automobile gearbox gear processing technology |
Non-Patent Citations (1)
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| 姚峻等: "《近年来双端面磨床的发展综述》", 《精密制造与自动化》 * |
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Application publication date: 20200828 |
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