CN100488687C - High-modulus gear-profile generating processing method - Google Patents
High-modulus gear-profile generating processing method Download PDFInfo
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- CN100488687C CN100488687C CNB2007100525300A CN200710052530A CN100488687C CN 100488687 C CN100488687 C CN 100488687C CN B2007100525300 A CNB2007100525300 A CN B2007100525300A CN 200710052530 A CN200710052530 A CN 200710052530A CN 100488687 C CN100488687 C CN 100488687C
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- face milling
- milling cutters
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- tooth
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Abstract
A generating method of large modulus gears and profiles is disclosed. It emulates the meshing movement of the gear and rack on a general NC machine tool by NC synthesizing. Face milling cutter generation is adapted to process large modulus gears and profiles. Face milling cutter mounted with CBN blades can complete milling process of hard tooth surface, which can replaces grinding by milling. For large modulus nonstandard gears (modulus >50), small batch or single large modulus and supper-large modulus gears, the method has obvious low cost and technical advantages and notable social and economic benefits.
Description
Affiliated technical field
The present invention relates to a kind of processing method of gear.Be that a kind of model that adopts face milling cutters to carry out the large module gear flank profil of Gear Processing becomes processing method specifically.
Background technology
At present, the common method of Gear Processing mainly is following several: 1, use the generation method processing on the Gear Processing special purpose machine tool of dedicated gear cutter; 2, the not high gear of required precision adopts the processing of forming tool forming process; 3, processing grinding on gear grinding machines of the back flank of tooth that quenches.But, for big modulus hardened face gear, be nonstandard gear more than 50 as modulus, adopt said method processing, then there are the following problems:
1. the ability of at present domestic gear special machine bed (gear-hobbing machine, gear grinding machines) all can not satisfy processing request, and the expense of transforming lathe is very high.
2. the manufacture difficulty of big modulus or the nonstandard cutter for gear wheel of especially big modulus is big, and cost is very high, and the processing of the flank of tooth that hardens can't solve.
3. adopt forming tool processing, cutter manufacturing cost height, the low and processing flank of tooth that hardens of machining accuracy can't solve.
4. adopt the processing of ball cutter forming process on Digit Control Machine Tool, not only efficient is low but also connect tool marks and be not easy polishing, and quality can not effectively guarantee.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, provide a kind of model that adopts general NC lathe and universal cutter to carry out the large module gear flank profil of Gear Processing to become processing method.Its processing cost is low, precision and work efficiency height.
Technical solution of the present invention is: a kind of model of large module gear flank profil becomes processing method, may further comprise the steps:
A. use the general NC lathe, will through the gear horizontal clamping of thick tooth punching on workbench, make gear axis concentric, face milling cutters are installed on the main shaft with the pivot of workbench;
B. determine the rotating speed of gear, the rotating speed of selected workbench, the i.e. rotating speed of gear;
When C. determining the gear rotation, the movement velocity of face milling cutters,
According to V=π * d * n, Z
1=V * cos a, X
1The formula of=V * sin a calculates and determines the movement velocity of face milling cutters on X-axis and Z axle;
In the formula, V is the point-to-point speed of face milling cutters, and d is the reference diameter of gear, and n is the rotating speed of gear, Z
1Be the movement velocity of the relative Z axle of face milling cutters, X
1Be the movement velocity of face milling cutters on X-axis, a is the pressure angle of gear;
D. select the rotating speed and the depth of cut of face milling cutters;
E. B determined parameter to the step D is opened the general NC lathe set by step, workbench and face milling cutters rotation, main shaft moves along X-axis and Z axle, makes a flank of tooth on face milling cutters and the gear enter engagement, this flank of tooth of milling disengages until face milling cutters and gear.
The present invention can further include following steps:
F. face milling cutters are after the width displacement of gear, repeating step E, and add each flank of tooth on the work gear one by one.
The present invention can also work as gear when being the hard flank of tooth, edge CBN blade on the face milling cutters.
In the methods of the invention, X-axis is meant the direction along machine pillar, and the Z axle is meant along the direction of main shaft side's pillow.
Compared with prior art, the invention has the beneficial effects as follows: 1, by the synthetic method of numerical control, at the involute gear of universal numerical control machine adopted generation method machining large-modulus, precision is higher.2, the model that adopts general face milling cutters to finish involute profile becomes processing, and the cost of charp tool is extremely low.3, adopt the face milling cutters of edge CBN blade can finish the harden model of the flank of tooth (HV 〉=740) of involute and become processing, easy to process to mill the generation mill, and the flank of tooth is bright and clean, does not have to connect tool marks, and crudy is good.4, the direct clamping of cutter on main shaft, process system good rigidly, stock-removing efficiency height.5, the inventive method adopts general face milling cutters machining large-modulus involute gear on the universal numerical control lathe, and can finish the processing of the back flank of tooth that quenches, reduce the dependence of Gear Processing, save purchasing or improvement cost of special equipment dedicated tool and dedicated gear machining tool.Be particularly suitable for the processing of nonstandard big modulus and especially big modulus involute gear, also be suitable for the processing of the big modulus involute gear of small lot or single-piece.
Description of drawings
Fig. 1 adopts the inventive method to carry out the schematic diagram of gear 1 processing
The specific embodiment
The present invention is described in further detail below in conjunction with description of drawings and the specific embodiment:
Referring to Fig. 1, a kind of model of large module gear flank profil becomes processing method, may further comprise the steps:
A. use the general NC lathe, will through the gear 1 horizontal clamping of thick tooth punching on workbench 2, make gear 1 axle center concentric, face milling cutters 3 are installed on the main shaft with the pivot of workbench 2;
B. determine the rotation speed n of gear 1, the rotating speed of selected workbench 2, the i.e. rotation speed n of gear 1;
When C. determining gear 1 rotation, the movement velocity of face milling cutters 3,
According to V=π * d * n, Z
1=V * cos a, X
1The formula of=V * sin a calculates and determines the movement velocity of face milling cutters 3 on X-axis and Z axle;
In the formula, V is the point-to-point speed of face milling cutters 3, and d is the reference diameter of gear 1, and n is the rotating speed of gear 1, Z
1Be the movement velocity of face milling cutters 3 relative Z axles, X
1Be the movement velocity of face milling cutters 3 on X-axis, a is the pressure angle of gear 1;
D. select the rotating speed and the depth of cut of face milling cutters 3;
E, B determined parameter to the step D is opened the general NC lathe set by step, workbench 2 and face milling cutters 3 rotations, main shaft moves along X-axis and Z axle, make a flank of tooth on face milling cutters 3 and the gear 1 enter engagement, this flank of tooth of milling disengages until face milling cutters 3 and gear 1.
F. after face milling cutters 3 carry out displacement along the width of gear 1, repeating step E, and add each flank of tooth on the work gear 1 one by one.
When gear 1 is the hard flank of tooth, edge CBN blade on the face milling cutters 3.
The nonstandard pinion of certain driving mechanism, modulus m=62.33, number of teeth z=16, facewidth b=600 millimeter, pressure angle a=20 °, modification coefficient x=0.5, flank of tooth carburizing and quenching HRC 〉=60, quench-hardened case thickness is 6 millimeters, the accuracy of manufacture requires: DIN3961, and 9 grades of DIN3967 are because the modulus of this gear has surpassed the GB sequence, no standard process tool is sold on the market, also exceeds the ability of existing gear cutting machine.So adopt the inventive method it is carried out flank of tooth fine finishining, its concrete scheme is as follows: the 400 millimeters face milling cutters of Φ that adopt edge CBN (cubic boron nitride) blade, it is installed on the main shaft of common four-shaft linkage numerical control machine, an engagement side of tooth bar can be thought in the cutting face of face milling cutters like this, and its face milling cutters are synthesized the rectilinear motion (angle of this rectilinear motion and main shaft is pressure angle a=20 a ° of gear) of simulation tooth bar by numerical control along the motion of X-axis (machine pillar) and Z axle (main shaft side's pillow); Gear is installed on the rotary table of Digit Control Machine Tool, and the center of gear is concentric with the centre of gyration of workbench, and the rotation of workbench is equivalent to simulate the gyration of gear; The rectilinear motion (resultant motion of X-axis, Z axle) of gyration of workbench (B axle) and face milling cutters is promptly simulated the gear motion of wheel and rack.According to V=π * d * n, Z
1=V * cos a, X
1The formula of=V * sin a, data and other process datas to Digit Control Machine Tool input service platform and face milling cutters rolling movement, rotating speed of table is 0.05 rev/min, 100 rev/mins of the speeds of mainshaft, 0.3 millimeter of the face milling cutters engagement depth of cut (if its depth of cut of the soft flank of tooth of processing can reach more than 1.5 millimeters).Open Digit Control Machine Tool, workbench and face milling cutters rotation, main shaft moves along X-axis and Z axle, make a flank of tooth on face milling cutters and the gear enter the simulation engagement, this flank of tooth of face milling cutters milling in the simulation engagement process, to form the involute flank that very coincide with theoretical value, disengage until face milling cutters and gear.Because the quality control in preorder processing of this gear is better, and quenching distortion is little, once meshes feed and can satisfy processing request.After the first time, Milling Process was finished, make the width displacement of face milling cutters along gear
5Millimeter repeats Milling Process for the second time, machines until this flank of tooth.The repetition preceding method can process each flank of tooth on the gear one by one, realizes the fine finishining to gear.
After the first time, Milling Process was finished, also can continue to process each tooth on the gear at the same position of facewidth direction, and then face milling cutters are moved along the width of gear, continue to add each tooth on the work gear, until each flank of tooth that mills out on the gear, realize fine finishining to gear.
Aforesaid gears adopts after the inventive method milling fine finishining after testing, and tooth accuracy can reach DIN 3961,8 grades of DIN3967, and flank of tooth fineness is Ra 3.2, does not have to connect tool marks, tooth face hardness HRC 〉=60.With general NC lathe and face milling cutters processing, satisfied every specification requirement of large module gear tooth corridor processing, saved the expense of purchasing or make cutting tool special for processing and dedicated gear machining tool.This method has tangible cost, technical advantage and significant social economic benefit for the nonstandard gear of big modulus, small lot or the big modulus of single-piece and the especially big gear of processing modulus more than 50.
Claims (3)
1. the model of a large module gear flank profil becomes processing method, it is characterized in that may further comprise the steps:
A. use the general NC lathe, will through gear (1) the horizontal clamping of thick tooth punching on workbench (2), make gear (1) axle center concentric, face milling cutters (3) are installed on the main shaft with the pivot of workbench (2);
B. determine the rotating speed (n) of gear (1), the rotating speed of selected workbench (2), the i.e. rotating speed (n) of gear (1);
When C. determining gear (1) rotation, the movement velocity of face milling cutters (3),
According to V=π * d * n, Z
1=V * cos a, X
1The formula of=V * sin a calculates and determines the movement velocity of face milling cutters (3) along machine pillar direction and main shaft side's pillow direction;
In the formula, V is the point-to-point speed of face milling cutters (3), and d is the reference diameter of gear (1), and n is the rotating speed of gear (1), Z
1Be the movement velocity of face milling cutters (3) along main shaft side's pillow direction, X
1Be the movement velocity of face milling cutters (3) along the machine pillar direction, a is the pressure angle of gear (1);
D. select the rotating speed and the depth of cut of face milling cutters (3);
E. B determined parameter to the step D is opened the general NC lathe set by step, workbench (2) and face milling cutters (3) rotation, main shaft moves along machine pillar direction and main shaft side's pillow direction, make a flank of tooth on face milling cutters (3) and the gear (1) enter engagement, this flank of tooth of milling disengages until face milling cutters (3) and gear (1).
2. the model of a kind of large module gear flank profil according to claim 1 becomes processing method, it is characterized in that further may further comprise the steps:
F. face milling cutters (3) are after the width displacement of gear (1), repeating step E, and add each flank of tooth on the work gear (1) one by one.
3. the model of a kind of large module gear flank profil according to claim 1 and 2 becomes processing method, it is characterized in that: when gear (1) was the hard flank of tooth, face milling cutters (3) were gone up edge CBN blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100525300A CN100488687C (en) | 2007-06-22 | 2007-06-22 | High-modulus gear-profile generating processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100525300A CN100488687C (en) | 2007-06-22 | 2007-06-22 | High-modulus gear-profile generating processing method |
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| CN101069935A CN101069935A (en) | 2007-11-14 |
| CN100488687C true CN100488687C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100525300A Expired - Fee Related CN100488687C (en) | 2007-06-22 | 2007-06-22 | High-modulus gear-profile generating processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2453404C1 (en) * | 2011-04-22 | 2012-06-20 | Открытое акционерное общество "ВНИИИНСТРУМЕНТ" (ОАО "ВНИИИНСТРУМЕНТ") | Method of machining sides of involute helical gear profile |
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| JP5126195B2 (en) * | 2009-10-21 | 2013-01-23 | トヨタ自動車株式会社 | Tooth surface processing method |
| CN101913067A (en) * | 2010-08-20 | 2010-12-15 | 重庆齿轮箱有限责任公司 | Forming and machining method of large-modulus gear |
| CN102672279A (en) * | 2011-03-11 | 2012-09-19 | 上海欧际柯特回转支承有限公司 | Molding method for milling large module gear for wind power generation |
| CN102430902A (en) * | 2011-10-21 | 2012-05-02 | 无锡银联机械有限公司 | Novel machining technique for roughing large module gears |
| CN102626808B (en) * | 2012-05-09 | 2015-03-04 | 重庆理工大学 | Method for processing large-module and large-diameter gear ring on horizontal boring machine |
| CN103846507B (en) * | 2012-12-04 | 2017-01-25 | 中车戚墅堰机车车辆工艺研究所有限公司 | Hobbing processing method of gear |
| CN103390078B (en) * | 2013-07-05 | 2016-06-08 | 常熟天地煤机装备有限公司 | A kind of large modulus, the simulation of gear with little teeth number profile of tooth and working method |
| CN103331494B (en) * | 2013-07-10 | 2015-10-28 | 上海第二工业大学 | A kind of concurrent aces variable tooth thickness gear profile error analytical method |
| CN107378136A (en) * | 2017-07-18 | 2017-11-24 | 二重集团（德阳）重型装备股份有限公司 | The open processing method of large modulus major diameter straight bevel gear teeth portion |
| CN108109199A (en) * | 2017-12-20 | 2018-06-01 | 厦门理工学院 | A kind of planar-formed surface three dimension modeling method of end mill processing |
| CN108345733A (en) * | 2018-01-31 | 2018-07-31 | 厦门理工学院 | Screw-on cutter plane machining shapes surface three dimension modeling method |
| CN109128391A (en) * | 2018-11-22 | 2019-01-04 | 上海电气集团股份有限公司 | A kind of gear working method |
| CN109434219A (en) * | 2018-12-21 | 2019-03-08 | 重庆齿轮箱有限责任公司 | A kind of four axis side edge mill teeth methods |
| CN109663991B (en) * | 2019-01-22 | 2020-06-05 | 南京工大数控科技有限公司 | Involute cylindrical gear enveloping milling method considering tooth surface precision characteristic |
| CN110821731B (en) * | 2019-12-03 | 2022-03-22 | 福建永强力加动力设备有限公司 | Starting motor |
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2007
- 2007-06-22 CN CNB2007100525300A patent/CN100488687C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2453404C1 (en) * | 2011-04-22 | 2012-06-20 | Открытое акционерное общество "ВНИИИНСТРУМЕНТ" (ОАО "ВНИИИНСТРУМЕНТ") | Method of machining sides of involute helical gear profile |
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| CN101069935A (en) | 2007-11-14 |
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Granted publication date: 20090520 Termination date: 20170622 |