CN102319843A - Machining method of internal gear teeth - Google Patents
Machining method of internal gear teeth Download PDFInfo
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- CN102319843A CN102319843A CN201110201797A CN201110201797A CN102319843A CN 102319843 A CN102319843 A CN 102319843A CN 201110201797 A CN201110201797 A CN 201110201797A CN 201110201797 A CN201110201797 A CN 201110201797A CN 102319843 A CN102319843 A CN 102319843A
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Abstract
The invention provides a machining method of internal gear teeth. The machining method comprises the following steps of: machining an external rolling gear with the precision of above 5 grade and large backlash; designing a high-order spline modification curve for the contour shape of the tooth surface of the external rolling gear; grinding the external rolling gear for modification; machining an internal gear blank with the precision of 7-8 grade; normalizing or thermally refining the internal gear blank; rolling the internal gear blank forwards and backwards, wherein, the rolling speed is 3-20rpm, the increasing rolling speed is 4-6rpm, and the rolling deformation is 0.05-0.4mm; and carrying out gradient loading and gradient running-in on the rolled internal gear on a high-speed running-in machine so as to finish machining of the internal gear teeth with the precision of 6-7 grade. The machining method provided by the invention has the beneficial effects that by means of strict control of a plurality of parameters, the generation method rolling machining process with higher machining precision is applied to machining the internal gear so as to obviously improve the machining precision of the internal gear.
Description
Technical field
The present invention relates to a kind of processing method of the internal gear gear teeth, belong to the machine finishing technical field.
Background technology
Can know that from theory of mechanics and Gear Processing technology and principle the involute of the internal gear gear teeth is the expansion curves in the basic circle, can't use the higher generation method roll flute processing technology of machining accuracy make in the gear teeth.Simultaneously; External gear conduct with normal engaged rolls gear; The deformation uniformity and the right sideshake of meshing gear of the existing uncontrollable internal gear flank of tooth of rolling apparatus; Thereby can't realize the accuracy of mesh of internal gear requirement, so the generation method processing technology is failed successful implementation in internal gear gear teeth processing always.
In the prior art; Internal gear processing is adopted gear shaping usually, is drawn method of forming processing methods such as tooth, moulding; But use the ring gear gear teeth accuracy of manufacture of above method processing lower, generally be no more than 7 grades, cause gear in interior engaged transmission, to produce vibration, noise, additional dynamic load etc.; Reduced bearing capacity, life-span and the reliability of gear, can not satisfy of the requirement of middle and high end equipment accurate transmission.
The inside engaged gear transmission is planetary necessary engagement system, when planetary reduction gear ring gear precision is low, improves the accuracy of gear that is meshed with it and can not improve the synthesis precision of transmission.Just because of existing ring gear machining accuracy lower (being no more than 7 grades); Cause the transmission accuracy and the transmission efficiency of China's planetary reduction gear to can not get improving; The middle and high end planetary reduction gear can only dependence on import, and import decelerator equipment price is expensive, has greatly limited the development and application of planetary reduction gear.
Denomination of invention is " a kind of assembled internal gear "; Open day: on June 24th, 2009; Publication number is: CN 101463894A, a kind of assembled internal gear is disclosed, and comprise annular tooth wheel body and the gear teeth unit that constitutes by gear teeth at least; Gear teeth unit is set up in parallel at the inboard formation of annular tooth wheel body internal gear along circumference, and gear teeth unit is connected, is threaded or the interference fits connection with the pin that is connected to of gear mass.This invention has realized converting internal gear processing into external gear processing through internal gear being designed to assemblnig structure, has simplified processing technology; Improved gear teeth machining accuracy, still, the globality and the bulk strength of assembly type gear structure are poor; Its connecting portion is the main stressed position of gear just, and gear is very easily occurred owing to the connecting portion undercapacity in transmission, and influences the normal rotation of gear; Even structural deterioration; And processing of assembled gear structure and assembling are complicated, cost is higher, and rigging error is very big to the influence of gear bulk strength, thereby can not be suitable in the heavily loaded high speed planetary reduction gear of middle and high end.
Denomination of invention is: " straight line one involute profile internal spur gear is secondary "; Open day: on July 8th, 2009, publication number: CN 101476614A, it is secondary to disclose straight line one involute profile internal spur gear; Change the flank profil of internal gear into straight line by involute; But emery wheel only needs just formation teeth-grinding of straight line finishing, thereby reduces difficulty of processing, improves fine finishining efficient and machining accuracy.But; Internal gear tooth changes straight line into by asymptote; Gear meshing performance and comprehensive mechanical property have greatly been reduced; And the transmission efficiency that has reduced gear, thereby fail fundamentally to solve the machining accuracy problem of internal gear, can not adapt to the requirement of the heavily loaded high speed planetary reduction gear of middle and high end.
Summary of the invention
The present invention is that the generation method processing method that overcomes the prior art internal gear gear teeth can not be suitable for; The machining accuracy that method of forming processing method exists is low, the gear bearing capacity not enough, can not satisfy the requirement of middle and high end decelerator; The globality that assembled internal gear exists and bulk strength is poor, bearing capacity is low; And the shortcomings and deficiencies that meshing performance is poor, transmission efficiency is low of the gear teeth in the linear pattern, a kind of generation method processing method of the internal gear gear teeth is provided, can significantly promote gear teeth machining accuracy and surface strength; And the bearing capacity of gear and comprehensive mechanical property; Can be applied to process ring gear in the processing of ring gear of middle and high end planetary reduction gear, satisfy the higher transmission accuracy and the transmission efficiency of middle and high end planetary reduction gear requirement with degree of precision; And the running stability of planetary reduction gear and good reliability, the operation noise, the vibration little.
The present invention for realizing the technical scheme that technical purpose adopts is:
A kind of processing method of the internal gear gear teeth may further comprise the steps:
(1) processing rolls external gear, and the said precision that rolls external gear is more than 5 grades, and sideshake is 5%～10% of a modulus;
(2) calculating rolls external gear teeth facial contour shape, revises through digital simulation and experiment, obtains rolling the tooth top of external gear and the high order batten modification curve of tooth root;
(3), carry out roll flute correction of the flank shape processing to rolling external gear according to the tooth top that rolls external gear of step (2) gained and the high order batten modification curve of tooth root;
(4) machining interal blank, said internal gear semifinished product precision is 7～8 grades;
(5) internally gear blank carries out normalizing or modified heat treatment;
(6) roll external gear with what step (3) obtained, the internal gear blank that step (5) is obtained rotates and reverse rolls processing, and rolling speed is 3～20rpm, and the increasing velocity of rolling speed is per minute 4～6rpm, and rolling deflection is 0.05～0.4mm;
(7) internal gear after rolling is carried out gradual change load and gradual change running-in on high speed running-in machine, the completion precision is 6～7 grades internal gear gear teeth processing.
Special, in step (3), to the maximum profiling quantity that rolls external gear roll flute correction of the flank shape processing be controlled at modulus 2% in.
Special, the precision that in step (1), rolls external gear is 5 grades, and the internal gear semifinished product precision of step (4) is 7 grades, and the internal gear precision that step (7) obtains is 6 grades.
Compared with prior art, characteristics of the present invention are:
1. revise through digital simulation and experiment, obtain rolling the tooth top of external gear and the high order batten modification curve of tooth root, realize rolling the accurate correction of the flank shape of external gear teeth facial contour, thereby raising rolls the precision of machining interal.
2. improve the precision of internal gear blank; Roll in deflection can be controlled at more among a small circle thereby make; Through to rolling effective control of deflection, realize the accurate control of the sideshake that deformation uniformity and the meshing gear of internal gear teeth face is right, thereby significantly promote the comprehensive process precision of internal gear.
3. control the acceleration that increases progressively of slower rolling speed and rolling speed, roll under the prerequisite of working (machining) efficiency, eliminate too fast rolling speed and cause harmful effect, improve flank of tooth intensity and gear bearing capacity gear teeth intracell performance in assurance.
4. this method is through the strictness control to multiple parameter; Realized the breakthrough of the higher generation method processing technology of machining accuracy in internal gear processing; Solve generation method and can't realize the technical barrier of internal Gear Processing always, significantly promoted the machining accuracy of internal gear.
5. this method can be applicable in the ring gear processing of planetary reduction gear; The ring gear accuracy of manufacture that solves existing planetary reduction gear can't surpass 7 grades technical bottleneck; The ring gear accuracy of manufacture is increased to more than 6 grades even 6 grades; Thereby significantly promoted the combination properties such as transmission accuracy, transmission efficiency, running stability and reliability of planetary reduction gear, can satisfy the requirement of middle and high end planetary reduction gear.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further.
Internal gear gear teeth processing method provided by the invention may further comprise the steps:
(1) machining accuracy is the external gear that rolls more than 5 grades, and sideshake is 5%～10% of a module.The precision that rolls external gear should be higher than internal gear machining accuracy one-level, and the ring gear required precision of existing middle and high end planetary reduction gear is generally 6 grades, thereby to need machining accuracy be 5 grades the external gear that rolls.
(2) calculating rolls external gear teeth facial contour shape, revises through digital simulation and experiment, obtains rolling the tooth top of external gear and the high order batten modification curve of tooth root.
(3), carry out roll flute correction of the flank shape processing to rolling external gear according to the tooth top that rolls external gear of step (2) gained and the high order batten modification curve of tooth root.The maximum profiling quantity that rolls the correction of the flank shape of external gear be controlled at modulus 2% in.
(4) the machining blanks precision is 7～8 grades an internal gear blank, controls the follow-up deflection that rolls that rolls procedure of processing, realizes improving the purpose of the precision that rolls processing.
(5) internally gear blank carries out normalizing or modified heat treatment.
(6) roll external gear after the correction of the flank shape that obtains with step (3); To the processing that rolls that rotates and reverse through normalizing or modified heat treated internal gear blank; Rolling speed is 3～20rpm, and the increasing velocity of rolling speed is per minute 4～6rpm, and rolling deflection is 0.05～0.4mm.
The rolling speed of prior art internal gear processing is generally 15～25rpm, and rolling deflection is about 0.8mm, and this method has significantly reduced rolling speed and rolled deflection.This method is eliminated too fast rolling speed and is caused the harmful effect to gear teeth intracell performance through the acceleration that increases progressively of control rolling speed and rolling speed, improves flank of tooth intensity and gear bearing capacity; Through to rolling effective control of deflection, realize the accurate control of the sideshake that deformation uniformity and the meshing gear of internal gear teeth face is right, thereby significantly promote the comprehensive process precision of internal gear.
(7) internal gear after rolling is carried out gradual change load and gradual change running-in on high speed running-in machine, the completion precision is 6～7 grades internal gear gear teeth processing.
This method can be applicable in the ring gear processing of planetary reduction gear; The ring gear accuracy of manufacture that solves existing planetary reduction gear can't surpass 7 grades technical bottleneck; The ring gear accuracy of manufacture is increased to more than 6 grades even 6 grades; Thereby significantly promoted the combination properties such as transmission accuracy, transmission efficiency, running stability and reliability of planetary reduction gear, satisfied the requirement of middle and high end planetary reduction gear.
More than embodiments of the invention are specified, but the present invention is not limited to the foregoing description, in the ken that those of ordinary skills possessed, can also make various variations not breaking away under the aim prerequisite of the present invention.
Claims (3)
1. the processing method of internal gear gear teeth is characterized in that may further comprise the steps:
(1) processing rolls external gear, and the said precision that rolls external gear is more than 5 grades, and sideshake is 5%～10% of a modulus;
(2) calculating rolls external gear teeth facial contour shape, revises through digital simulation and experiment, obtains rolling the tooth top of external gear and the high order batten modification curve of tooth root;
(3), carry out roll flute correction of the flank shape processing to rolling external gear according to the tooth top that rolls external gear of step (2) gained and the high order batten modification curve of tooth root;
(4) machining interal blank, said internal gear semifinished product precision is 7～8 grades;
(5) internally gear blank carries out normalizing or modified heat treatment;
(6) roll external gear with what step (3) obtained, the internal gear blank that step (5) is obtained rotates and reverse rolls processing, and rolling speed is 3～20rpm, and the increasing velocity of rolling speed is per minute 4～6rpm, and rolling deflection is 0.05～0.4mm;
(7) internal gear after rolling is carried out gradual change load and gradual change running-in on high speed running-in machine, the completion precision is 6～7 grades internal gear gear teeth processing.
2. the processing method of a kind of internal gear gear teeth according to claim 1 is characterized in that: in the step (3), to the maximum profiling quantity that rolls external gear roll flute correction of the flank shape processing be controlled at modulus 2% in.
3. the processing method of a kind of internal gear gear teeth according to claim 1 is characterized in that: the precision that rolls external gear in the step (1) is 5 grades, and the internal gear semifinished product precision of step (4) is 7 grades, and the internal gear precision that step (7) obtains is 6 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110201797A CN102319843A (en) | 2011-07-19 | 2011-07-19 | Machining method of internal gear teeth |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110201797A CN102319843A (en) | 2011-07-19 | 2011-07-19 | Machining method of internal gear teeth |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002035879A (en) * | 2000-07-28 | 2002-02-05 | Honda Motor Co Ltd | Internal gear formation method |
| EP1486269A1 (en) * | 2002-02-21 | 2004-12-15 | Toyoda Machine Works, LTD. | Method of forming internal gear, and internal gear |
| CN1638916A (en) * | 2002-03-08 | 2005-07-13 | 依纳-谢夫勒两合公司 | Method for the production of an internal geared wheel for a planetary carrier |
| CN1829578A (en) * | 2003-07-25 | 2006-09-06 | 株式会社Mh中心 | Method of manufacturing part with internal gear and rolling machine |
| CN101376153A (en) * | 2007-08-29 | 2009-03-04 | 日本斯频德制造株式会社 | Method and device for forming internal gear |
| CN101251181B (en) * | 2008-03-25 | 2011-02-09 | 东华大学 | Helical teeth elliptic gear as well as method for three-dimensional model-building accurately and entity shaping |
-
2011
- 2011-07-19 CN CN201110201797A patent/CN102319843A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002035879A (en) * | 2000-07-28 | 2002-02-05 | Honda Motor Co Ltd | Internal gear formation method |
| EP1486269A1 (en) * | 2002-02-21 | 2004-12-15 | Toyoda Machine Works, LTD. | Method of forming internal gear, and internal gear |
| CN1638916A (en) * | 2002-03-08 | 2005-07-13 | 依纳-谢夫勒两合公司 | Method for the production of an internal geared wheel for a planetary carrier |
| CN1829578A (en) * | 2003-07-25 | 2006-09-06 | 株式会社Mh中心 | Method of manufacturing part with internal gear and rolling machine |
| CN101376153A (en) * | 2007-08-29 | 2009-03-04 | 日本斯频德制造株式会社 | Method and device for forming internal gear |
| CN101251181B (en) * | 2008-03-25 | 2011-02-09 | 东华大学 | Helical teeth elliptic gear as well as method for three-dimensional model-building accurately and entity shaping |
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Application publication date: 20120118 |