CN1101871A - Method for grinding tooth back of worm hob with secondary enveloping ring surface - Google Patents
Method for grinding tooth back of worm hob with secondary enveloping ring surface Download PDFInfo
- Publication number
- CN1101871A CN1101871A CN 93120467 CN93120467A CN1101871A CN 1101871 A CN1101871 A CN 1101871A CN 93120467 CN93120467 CN 93120467 CN 93120467 A CN93120467 A CN 93120467A CN 1101871 A CN1101871 A CN 1101871A
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- hobboing cutter
- worm
- enveloping
- tooth
- grinding
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
On numerally controlled 4-axle linkage grinder for torus worm, a shaping abrasive disk whose axial cross section is consistent with the normal one of worm tooth surface is used to grind and the axis of abrasive disk is in the normal cross section of worm tooth surface. With said processing method, the torus worm hob may be shaped precisely and its width of cutting edge and back-off angle are controlled accurately.
Description
The present invention relates to the process of a kind of grinding back of tooth of two double enveloping worm gear hobs.
Hobboing cutter during worm gear, keeps the cutting land of certain width in cutting usually, and for service life of the fineness, precision and the hobboing cutter that guarantee processed worm gear, hobboing cutter must have certain relief angle.To the back of tooth grinding of various cylindrical worm gear hobs, can be at the hobbing relieving machine bed, as finishing on K96, the K8950 etc.To ordinary straight line style enveloping worm hob, because the hobboing cutter helicoid is not a developable surface, so the accurately relief grinding moulding of hobboing cutter land helicoid, can only adopt the method for approximate grinding to process the hobboing cutter land always.The twice-enveloping enveloping worm hob of various molded lines, though cutter profile and ordinary straight line style enveloping worm hob are quite similar, but both forming principles are completely different, can not adopt the approximate grinding method of ordinary straight line style enveloping worm hob, more impossible on existing hobbing relieving machine bed, by the back of tooth of existing method grinding twice-enveloping enveloping worm hob; At present, can only adopt the method for the hand grinding back of tooth, hobboing cutter margin width and relief angle all can't accurately be controlled.
The objective of the invention is to avoid weak point of the prior art, and a kind of back of tooth method for grinding that can accurately control the twice-enveloping enveloping worm hob of margin width and relief angle is provided.
Can take following technical scheme to realize purpose.On numerical control four-axis interlock enveloping worm grinding machine, adopt axial truncatus to cut the consistent forming grinding wheel of shape and carry out grinding with the normal direction of hobboing cutter (worm screw) flank of tooth, the emery wheel axis places the normal section of hobboing cutter (worm screw) flank of tooth; Hobboing cutter rotates, emery wheel rotation, also along the feed motion of hobboing cutter hand of helix, and promptly existing radial feed has screwfeed again.Can form the land of certain width and guarantee certain relief angle.
In conjunction with the accompanying drawings, embodiment is described in further detail the content of the technical program.
Fig. 1 is surface of revolution emery wheel twice-enveloping enveloping worm hob (worm screw) schematic diagram;
A, be flat-faced wheel twice-enveloping enveloping worm hob (worm screw) grinding-shaping schematic diagram;
B, be emery wheel inner conical surface twice-enveloping anchor ring worm gear cutter (worm screw) grinding-shaping schematic diagram;
Fig. 2 is a cutter shaft cross section throat symmetry tooth schematic diagram;
Fig. 3 is a hobboing cutter normal section throat symmetry tooth schematic diagram;
Fig. 4 (a) is a twice-enveloping enveloping worm hob outline drawing;
Fig. 4 (b) is twice-enveloping enveloping worm hob tooth form of axial direction figure;
Fig. 5 is a grinding wheel spindle cross section profile schematic diagram;
Fig. 6 is each cutter tooth corresponding angles schematic diagram of hobboing cutter;
Fig. 7 is the relative position and the correction of the flank shape movement relation schematic diagram of emery wheel and hobboing cutter (worm screw);
Fig. 8 is a twice-enveloping enveloping worm hob back of tooth grinding sequential schematic.
The twice-enveloping enveloping worm hob is to make a general reference with various surface of revolution emery wheel envelopes, has the various enveloping worm hobs of corresponding molded lines, the plane-generated double enveloping shown in anchor ring twice-enveloping, involute twice-enveloping and accompanying drawing 1, conical surface twice-enveloping or the like.As can be seen from the figure emery wheel is surface of revolution, and section shape of curved surface is respectively plane and straight line, taper.
Before the tooth punching, identical with the profile of tooth of corresponding worm screw, tooth punching (groove) does not just form hobboing cutter to the twice-enveloping enveloping worm hob of various molded lines afterwards, and promptly hobboing cutter and worm screw have uniformity, and this point and prior art do not have difference.
This method for grinding must link at numerical control four-axis and process on (CNC) enveloping worm grinding machine, has only this lathe could satisfy movement relation and control corresponding requirement.Its processing method of adjustment is specific as follows.
Earlier worm gear hob tooth base is installed on two top of numerical control worm grinding machine, according to the forming method of grinding worm, the cutting edge of machining worm wheel hobboing cutter, i.e. the first enveloped moulding of hobboing cutter land.
Trimming wheel makes it become forming grinding wheel, and is in full accord even the normal direction of the axial truncatus of emery wheel and basic worm helicoid is cut shape.Accompanying drawing 2,3 has provided cutter shaft respectively to the shape of cutting that reaches normal direction throat symmetry tooth.Because the land helicoid of the twice-enveloping enveloping worm hob of various molded lines is developable surfaces, but its same envelope moulding with the worm spiral face, therefore, the land of twice-enveloping enveloping worm hob can be by the Precise Grinding moulding, and this is unchallenged; The special part of twice-enveloping enveloping worm hob is that the size of each cutter tooth is different everywhere, and its tooth form of axial direction is as accompanying drawing 4(b) shown in, the wideest b of (central part) facewidth of throat among the figure
Max, outside successively attenuate, the minimum b of the heel teeth facewidth
MinAs select the symmetrical normal plane of hobboing cutter throat to cut shape and cut shape as the axle of emery wheel, as shown in Figure 5, can adopt electronic computer accurately to ask to calculate worm gear hob throat normal plane and cut the coordinate figure of shape flank profil.
Example: centre-to-centre spacing a=125.00mm, number of threads Z
1=3, worm-gear toothing Z
2=20, hobboing cutter (worm screw) reference diameter DI=56.00mm, hobboing cutter outside diameter circle DAI=64.00mm, overlap arc XI=0.00, speed ratio modification coefficient DZ=0.00 variation of axial position coefficient B=0.00, super beginning angle PHIO=4.1711, emery wheel angle of inclination B ETA=17.200, when groove is counted AK=1, can try to achieve one group of worm screw normal section coordinate figure.
As stated above each cutter tooth cyclotomy P point place normal plane of hobboing cutter is cut shape coordinate figure (Xn, Yn, Zn) obtain, import then in the computer of numerical control four-axis interlock enveloping worm grinder wheel trimmer, shaft section to emery wheel carries out correction of the flank shape according to hobboing cutter normal section coordinate respective value, can obtain desirable grinding wheel spindle and cut the shape profile, as shown in Figure 5.To the finishing of other profile of tooth of hobboing cutter, can repair emery wheel by the residing position of each cutter tooth of hobboing cutter shown in the accompanying drawing 6.Form forming grinding wheel.
Adjust the emery wheel position, on lathe, make the emery wheel axis place the normal section of the hobboing cutter flank of tooth.As shown in Figure 7, the QtZt axle of emery wheel was placed among the normal plane of the hobboing cutter flank of tooth that P orders, and mobile emery wheel, and hobboing cutter land helicoid and emery wheel are fitted.
Four motions of ψ 1, ψ 2, A, B of control numerical control four-axis interlock enveloping worm grinding machine:
Make hobboing cutter rotation ψ 1 and additional corner △ ψ 1, make the hobboing cutter land be left to the width of appointment in advance, be controlled at usually in (0.1-0.15) mm scope;
Emery wheel anglec of rotation ψ 2, and make the mill amount of emery wheel along a △ ψ 2 of Yt direction feeding, its △ ψ 2 can be controlled in (0.1-0.2) mm scope;
Emery wheel moves along A, B direction, even emery wheel produces relative screwfeed campaign with hobboing cutter.Equal angular pitch γ=360 °/Z by hobboing cutter revolution ψ 1
2(Z in the formula
2Be the worm gear number of teeth), make the hobboing cutter flank produce relief angle;
Emery wheel radially withdraws from along hobboing cutter, and the back of tooth grinding of first hobboing cutter tooth is finished;
Emery wheel and hobboing cutter all rotate another ψ 1 and ψ 2, enter grinding position along second hobboing cutter tooth of hobboing cutter hand of helix.
Hobboing cutter back of tooth relief grinding order as shown in Figure 8, (a) be the cutter tooth carried on the back of roll flute not among the figure; (b) be sharpening flank schematic diagram; (c) form schematic diagram for the flank relief angle; (d) all grind schematic diagram for flank and top relief angle.
Emery wheel repeats above-mentioned control procedure after carrying out axial plane moulding finishing according to the cyclotomy normal section coordinate of next cutter tooth again.Can be with whole cutter tooth back of tooth grinding-shapings.During the top relief angle of each tooth of grinding hobboing cutter, defer to above-mentioned method for grinding, but needn't walk screwfeed, only walk radial feed, can grind required relief angle.
In sum, the relative prior art of the technical program has following advantage: on numerical control four-axis interlock enveloping worm grinding machine, grinding twice-enveloping enveloping worm hob, the branch circule method that only needs to obtain each cutter tooth of hobboing cutter according to computer is cut the shape coordinate figure, just can make twice-enveloping enveloping worm hob precise forming by the processing method that the present invention proposes, broken traditional usual manner with the cam mould relief grinding hobboing cutter back of tooth, save a large amount of expenses, because the Digit Control Machine Tool motion accurately, hobboing cutter margin width and relief angle all can accurately be controlled.
Claims (1)
1, a kind of back of tooth of twice-enveloping enveloping worm hob mill method is characterized in that:
A, use axial truncatus cut the consistent forming grinding wheel of shape with the normal direction of hobboing cutter (worm screw) flank of tooth and carry out grinding;
B, emery wheel axis place the normal section of hobboing cutter (worm screw) flank of tooth;
C, hobboing cutter rotate, emery wheel rotation, also along the feed motion of hobboing cutter hand of helix, and promptly existing radial feed has screwfeed again;
D, on numerical control four-axis interlock enveloping worm grinding machine, process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93120467A CN1042007C (en) | 1993-12-17 | 1993-12-17 | Method for grinding tooth back of worm hob with secondary enveloping ring surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93120467A CN1042007C (en) | 1993-12-17 | 1993-12-17 | Method for grinding tooth back of worm hob with secondary enveloping ring surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1101871A true CN1101871A (en) | 1995-04-26 |
| CN1042007C CN1042007C (en) | 1999-02-10 |
Family
ID=4993317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93120467A Expired - Lifetime CN1042007C (en) | 1993-12-17 | 1993-12-17 | Method for grinding tooth back of worm hob with secondary enveloping ring surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1042007C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223533A (en) * | 2013-05-10 | 2013-07-31 | 中国农业大学 | Method for designing side rear angle surfaces of double-enveloping ring surface worm gear hob |
| CN104440419A (en) * | 2014-11-04 | 2015-03-25 | 中国农业大学 | Numerical control grinding method for planar double-enveloping ring surface worm gear hob rear side edged surfaces |
| CN107971582A (en) * | 2017-11-24 | 2018-05-01 | 上海合纵重工机械有限公司 | A kind of method for improving planar double enveloping worm tooth accuracy |
| CN109514009A (en) * | 2018-12-25 | 2019-03-26 | 江西福格新能源传动技术有限公司 | Helical gears gear hobbing roll flute is integrally machined equipment |
| CN113175501A (en) * | 2021-05-18 | 2021-07-27 | 成都理工大学 | Plane secondary enveloping ring surface worm gear and manufacturing method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3105332A (en) * | 1960-04-18 | 1963-10-01 | Wildhaber Ernest | Method of producing hourglass worms and hourglass hobs |
| SU430596A1 (en) * | 1972-03-06 | 1976-07-05 | Ленинградский Металлический Завод Им. Ххп Съезда Кпсс | Method of forming a helical surface of a non-cylindrical screw |
| SU443733A1 (en) * | 1972-05-23 | 1974-09-25 | Предприятие П/Я В-2628 | The method of processing globoid worms |
| US3875635A (en) * | 1974-04-15 | 1975-04-08 | Le Metallichesky Z Im Xxii Sie | Method of forming globoid worm thread and worm wheel teeth |
| CN86107189A (en) * | 1986-10-13 | 1987-05-20 | 冶金部西安冶金机械厂 | The processing method of ring surface-worm with envelop curved face |
| JPS6425551U (en) * | 1987-08-05 | 1989-02-13 |
-
1993
- 1993-12-17 CN CN93120467A patent/CN1042007C/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223533A (en) * | 2013-05-10 | 2013-07-31 | 中国农业大学 | Method for designing side rear angle surfaces of double-enveloping ring surface worm gear hob |
| CN103223533B (en) * | 2013-05-10 | 2015-04-15 | 中国农业大学 | Method for designing side rear angle surfaces of double-enveloping ring surface worm gear hob |
| CN104440419A (en) * | 2014-11-04 | 2015-03-25 | 中国农业大学 | Numerical control grinding method for planar double-enveloping ring surface worm gear hob rear side edged surfaces |
| CN107971582A (en) * | 2017-11-24 | 2018-05-01 | 上海合纵重工机械有限公司 | A kind of method for improving planar double enveloping worm tooth accuracy |
| CN107971582B (en) * | 2017-11-24 | 2019-05-28 | 上海合纵重工机械有限公司 | A method of improving planar double enveloping worm tooth accuracy |
| CN109514009A (en) * | 2018-12-25 | 2019-03-26 | 江西福格新能源传动技术有限公司 | Helical gears gear hobbing roll flute is integrally machined equipment |
| CN109514009B (en) * | 2018-12-25 | 2024-05-17 | 江西福格新能源传动技术有限公司 | Helical gear hobbing and grinding integrated processing equipment |
| CN113175501A (en) * | 2021-05-18 | 2021-07-27 | 成都理工大学 | Plane secondary enveloping ring surface worm gear and manufacturing method thereof |
| CN113175501B (en) * | 2021-05-18 | 2022-04-08 | 成都理工大学 | Plane secondary enveloping ring surface worm gear and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1042007C (en) | 1999-02-10 |
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Expiration termination date: 20131217 Granted publication date: 19990210 |