CN109262214B - Process for quenching planetary gear - Google Patents
Process for quenching planetary gear Download PDFInfo
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- CN109262214B CN109262214B CN201811408648.7A CN201811408648A CN109262214B CN 109262214 B CN109262214 B CN 109262214B CN 201811408648 A CN201811408648 A CN 201811408648A CN 109262214 B CN109262214 B CN 109262214B
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- quenching
- planetary gear
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Gear Processing (AREA)
Abstract
The invention relates to the technical field of planet wheel processing, in particular to a process for quenching and processing a planet gear, which comprises the steps of rough processing of a rectangle, quenching, finish processing preparation, finish processing treatment, finish processing clamping correction, establishment of a workpiece coordinate system and the like. The machining center can clamp all the holes at one time to be machined in the machining center, and the position degree and the center distance of each hole are well guaranteed.
Description
Technical Field
The invention relates to the technical field of planet wheel processing, in particular to a process for quenching and processing a planet gear.
Background
The specifications of the planet gears are various, and the processing method of the existing processing enterprises is to grind the inner hole after two end surfaces of the planet gear carrier gear are flat ground, then correct the inner hole and mill the hole on the end surface. The processing method is easy to generate waste products, the consistency of the products is poor, the inner hole correction is finished manually, and the error between one piece and the other piece is large; because the part is relatively complex and the processing period is long, the influence of waste product re-feeding processing on the delivery date is large.
Disclosure of Invention
The invention aims to provide a process for quenching and processing a planetary gear, which can clamp and complete all holes on a processing center for processing a center hole and an end face finish machining hole at one time, and well ensure the position degree and the center distance of each hole.
In order to solve the technical problems, the invention adopts the following technical scheme:
a process for quenching a planetary gear comprises the following steps:
s1, roughly machining a rectangle: clamping the planetary gear in a machining center, and milling 6 rectangles;
s2, quenching: after the rough machining is finished, taking down the workpiece for quenching treatment;
s3, finishing preparation: grinding the quenched planet gear to be flat, and grinding two end faces of the planet gear to be flat to meet the requirements of a drawing;
s4, finishing treatment: polishing the mechanical workbench and the planetary gear by using oilstone;
s5, finish machining, clamping and correcting: the planetary gear is placed on a workbench by using a special cushion block, and the parts are horizontally and vertically corrected within the drawing range by using a dial indicator;
s6, establishing a workpiece coordinate system: using an edge finder to find the circle center position of the main hole and establish a main coordinate system for processing, using the edge finder to find the circle center position of the small hole according to the circle center position of the main hole and establish a small hole coordinate system;
s7: finish machining: and after the coordinate system is determined, performing primary positioning and finish machining on the main hole and the small hole.
Further, copper sheets are required to be added to the sizing blocks in the finish machining clamping correction in the step S5, and the sizing blocks are pressed at the sizing blocks by a pressing iron.
Further, in the step S6 of establishing the workpiece coordinate system, the minor-hole coordinate system parameter is subtracted from the major-hole coordinate system parameter to calculate the included angles of the three minor holes, and the actual coordinate system is aligned with the computer graphics.
Further, a small amount of trial machining is performed with the corresponding tool before finishing in step S7.
Further, the rotation speed of the tool in the step S7 finishing is 800-.
Further, the quenching step in step S2 is performed twice or more.
Further, in the rough machining rectangle in step S1, the tool rotation speed is 1000-.
Further, in the finishing preparation at step S3, a finishing margin is left for the flattened end face.
Further, in the finish machining jig correction at step S5, the jig presses the edge of the end face of the planetary gear from above.
Compared with the prior art, the invention can realize one of the following beneficial effects:
1. the machining center can clamp all holes of the center hole and the end face finish machining hole at one time, machining precision is improved, and machining time is saved.
2. And step S5, copper sheets need to be added to the sizing blocks during finish machining, clamping and correcting, and the sizing blocks are pressed at the sizing blocks by the pressing iron, so that fine adjustment of the level can be realized, and the levelness of the corrected workpiece can meet the requirement.
3. In the step S6 of establishing the workpiece coordinate system, the minor-hole coordinate system parameter is subtracted from the major-hole coordinate system parameter to calculate the included angle between the three minor holes, and the actual coordinate system is aligned with the computer graphics to achieve the purpose of determining the coordinate systems of the two milling parts in one clamping and aligning the two coordinate systems to meet the requirement of one-time processing.
4. And (4) a small amount of trial processing is carried out by using the corresponding cutter before finish processing in the step S7, so that whether the checking of the coordinate system is wrong or not can be detected, and waste products in processing are avoided.
5. In the step S7, the rotation speed of the cutter is 800-1000 revolutions per minute, the feed rate is 0.05-0.08mm, the most efficient and energy-saving machining speed can be realized, the cutter is protected, and the machining efficiency can be ensured.
6. The quenching is performed more than twice in the step S2, so that the hardness of the workpiece can be improved, and the rigidity can be improved.
7. In the rough machining rectangle of the step S1, the tool rotation speed is 1000-.
8. In the step S3, in preparation for finish machining, a finish machining allowance is reserved for grinding the end face, so that a machining allowance can be reserved when hole milling and finish machining of the end face are completed at one time in finish machining.
9. In the finish machining clamping correction of the step S5, the clamp presses the edge of the end face of the planetary gear from the upper part, so that the deformation of the workpiece due to clamping can be avoided.
Drawings
FIG. 1 is a view of a workpiece according to the present invention.
In the figure: 1-planetary gear, 2-main hole, 3-small hole and 4-rectangle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A process for quenching a planetary gear comprises the following steps:
s1, roughly machining a rectangle: clamping the planetary gear 1 in a machining center, and milling 6 rectangles 4;
s2, quenching: after the rough machining is finished, taking down the workpiece for quenching treatment;
s3, finishing preparation: grinding and flattening the quenched planet gear 1, and grinding and flattening two end faces of the planet gear 1 to meet the requirements of a drawing;
s4, finishing treatment: using oilstone to polish the mechanical workbench and the planetary gear 1;
s5, finish machining, clamping and correcting: the planet gear 1 is flatly placed on a workbench by using a special cushion block, and parts are horizontally and vertically corrected within a drawing range by using a dial indicator;
s6, establishing a workpiece coordinate system: using an edge finder to find the circle center position of the main hole 2 and establish a main processing coordinate system, using the edge finder to find the circle center position of the small hole 3 according to the circle center position of the main hole 2 and establish a small hole coordinate system;
s7: finish machining: and after the coordinate system is determined, the main hole 2 and the small hole 3 are positioned and finished at one time, so that the center hole and the end face finish machining hole can be clamped at one time on the machining center to be machined, the machining precision is improved, and the machining time is saved.
Example 2
On the basis of embodiment 1, in the step S5 of finish machining clamping correction, the copper sheet needs to be added to the sizing block, and the sizing block is pressed at the position of the sizing block by the pressing iron, so that the coordinate systems of two milling parts can be determined in one clamping, and the two coordinate systems are overlapped to meet the requirement of one machining.
Example 3
In addition to the embodiment 1, in the process of establishing the workpiece coordinate system in step S6, the parameters of the main hole coordinate system are subtracted from the parameters of the pinhole coordinate system to calculate the included angles of the three pinholes 3, the actual coordinate system is aligned and adjusted with the computer graphics,
example 4
On the basis of the embodiment 1, a small amount of trial machining is performed by using the corresponding tool before the finish machining in the step S7, so that whether the checking of the coordinate system is wrong or not can be detected, and the occurrence of waste machining is avoided.
Example 5
In addition to embodiment 1, the rotation speed of the tool is 800 rpm and the feed rate is 0.05 in the finishing in step S7, so that the tool can be protected and the safety of the machining can be ensured.
Example 6
In addition to embodiment 1, the rotation speed of the tool is 900 rpm and the feed rate is 0.07mm in the finish processing in step S7, so that the machining efficiency can be improved to some extent while the machining tool is protected.
Example 7
In addition to example 1, the finishing operation at step S7, in which the tool rotation speed was 1000 rpm and the feed rate was 0.08mm, enabled an improved machining efficiency in the maximum feed rate that the tool could withstand.
Example 8
In addition to example 1, the above-described quenching in step S2, in which the quenching is performed twice or more, can improve the hardness of the workpiece and increase the rigidity.
Example 9
In addition to the embodiment 1, in the rough machining rectangle in the step S1, the tool rotation speed is 1000 rpm, and the feed rate is 0.1mm, so that the machining efficiency can be increased in the rough machining stage.
Example 10
On the basis of embodiment 1, in the rough machining rectangle in step S1, the tool rotation speed is 1100 rpm, and the feed rate is 0.15mm, so that the machining efficiency can be increased in the rough machining stage.
Example 11
On the basis of embodiment 1, in the rough machining rectangle in step S1, the tool rotation speed is 1200 rpm, and the feed rate is 0.2mm, so that the machining efficiency can be increased in the rough machining stage.
Example 12
In addition to example 1, in the preparation for finish machining in step S3, the ground end surface is provided with a finish machining allowance, and when the hole milling and the finish machining of the end surface are completed at one time in the finish machining, the machining allowance can be reserved.
Example 13
In addition to embodiment 1, in the finish machining clamping correction in step S5, the jig presses the edge of the end face of the star gear 1 from above, and the workpiece can be prevented from being deformed by the clamping.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. A process for quenching a planetary gear is characterized in that: the method comprises the following steps:
s1, roughly machining a rectangle: clamping the planetary gear (1) in a machining center, and milling 6 rectangles (4);
s2, quenching: after the rough machining is finished, taking down the workpiece for quenching treatment;
s3, finishing preparation: grinding and flattening the quenched planet gear (1), and grinding and flattening two end faces of the planet gear (1) to meet the requirements of a drawing;
s4, finishing treatment: using oilstone to polish the mechanical workbench and the planetary gear (1);
s5, finish machining, clamping and correcting: the planetary gear (1) is flatly placed on a workbench by using a special cushion block, and parts are horizontally and vertically corrected within a drawing range by using a dial indicator; in the step S5, copper sheets are required to be added to the sizing block during finish machining, clamping and correcting, and the sizing block is pressed by a pressing iron;
s6, establishing a workpiece coordinate system: using an edge finder to find the circle center position of the main hole (2) and establish a main processing coordinate system, using the edge finder to find the circle center position of the small hole (3) according to the circle center position of the main hole (2), and establishing a small hole coordinate system; in the step S6, in the establishment of the workpiece coordinate system, the minor hole coordinate system parameter is used for subtracting the major hole coordinate system parameter, the included angle of the three minor holes (3) is calculated, and the actual coordinate system is superposed with the computer graph for comparison and adjustment;
s7: finish machining: and (3) carrying out primary positioning and finish machining on the main hole (2) and the small hole (3) after the coordinate system is determined.
2. The process for quenching a planetary gear according to claim 1, wherein: the corresponding tool is used for a small amount of trial machining before finishing in step S7.
3. The process for quenching a planetary gear according to claim 1, wherein: the rotating speed of the cutter in the step S7 finishing process is 800-1000 revolutions per minute, and the feed amount is 0.05-0.08 mm.
4. The process for quenching a planetary gear according to claim 1, wherein: the quenching step in step S2 is performed twice or more.
5. The process for quenching a planetary gear according to claim 1, wherein: in the step S1, the rotation speed of the tool is 1000-.
6. The process for quenching a planetary gear according to claim 1, wherein: in the finishing preparation of step S3, the end face is ground flat with a finishing margin.
7. The process for quenching a planetary gear according to claim 1, wherein: in the finish machining clamping correction of the step S5, the clamp presses the edge of the end face of the star gear (1) from the upper part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408648.7A CN109262214B (en) | 2018-11-23 | 2018-11-23 | Process for quenching planetary gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408648.7A CN109262214B (en) | 2018-11-23 | 2018-11-23 | Process for quenching planetary gear |
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| CN109262214A CN109262214A (en) | 2019-01-25 |
| CN109262214B true CN109262214B (en) | 2020-10-02 |
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Citations (8)
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|---|---|---|---|---|
| EP0925857A2 (en) * | 1997-12-26 | 1999-06-30 | Metalart Corporation | Speed gear and manufacturing method and apparatus for it |
| JP2003071632A (en) * | 2001-08-31 | 2003-03-12 | Toyota Motor Corp | Manufacturing method for gear |
| CN103196344A (en) * | 2013-03-22 | 2013-07-10 | 南通锻压设备股份有限公司 | Eccentric gear and eccentric body synchronous calibrating method and eccentric gear and eccentric body calibrating device |
| CN103495846A (en) * | 2013-10-14 | 2014-01-08 | 奇瑞汽车股份有限公司 | Gear processing technology |
| CN104057266A (en) * | 2014-06-04 | 2014-09-24 | 安徽省宁国顺昌机械有限公司 | Slewing bearing quenching type inner gear ring processing technology |
| CN106514162A (en) * | 2016-11-23 | 2017-03-22 | 南京中船绿洲机器有限公司 | Five-equal-dividing large gear machining process |
| CN108161377A (en) * | 2016-12-27 | 2018-06-15 | 银川威力传动技术股份有限公司 | A kind of superfine processing method of Cycloidal Wheel |
| CN108747240A (en) * | 2018-08-06 | 2018-11-06 | 合肥银泉铸造有限责任公司 | A kind of car Gearmaking Technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4614709B2 (en) * | 2004-08-04 | 2011-01-19 | ナブテスコ株式会社 | Method for manufacturing external gear |
| CN106695266A (en) * | 2017-01-23 | 2017-05-24 | 重庆蓝黛动力传动机械股份有限公司 | Machining method for automobile transmission disk gear |
-
2018
- 2018-11-23 CN CN201811408648.7A patent/CN109262214B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0925857A2 (en) * | 1997-12-26 | 1999-06-30 | Metalart Corporation | Speed gear and manufacturing method and apparatus for it |
| JP2003071632A (en) * | 2001-08-31 | 2003-03-12 | Toyota Motor Corp | Manufacturing method for gear |
| CN103196344A (en) * | 2013-03-22 | 2013-07-10 | 南通锻压设备股份有限公司 | Eccentric gear and eccentric body synchronous calibrating method and eccentric gear and eccentric body calibrating device |
| CN103495846A (en) * | 2013-10-14 | 2014-01-08 | 奇瑞汽车股份有限公司 | Gear processing technology |
| CN104057266A (en) * | 2014-06-04 | 2014-09-24 | 安徽省宁国顺昌机械有限公司 | Slewing bearing quenching type inner gear ring processing technology |
| CN106514162A (en) * | 2016-11-23 | 2017-03-22 | 南京中船绿洲机器有限公司 | Five-equal-dividing large gear machining process |
| CN108161377A (en) * | 2016-12-27 | 2018-06-15 | 银川威力传动技术股份有限公司 | A kind of superfine processing method of Cycloidal Wheel |
| CN108747240A (en) * | 2018-08-06 | 2018-11-06 | 合肥银泉铸造有限责任公司 | A kind of car Gearmaking Technology |
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| CN109262214A (en) | 2019-01-25 |
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