CN102806447B - Method for manufacturing spherical hob - Google Patents
Method for manufacturing spherical hob Download PDFInfo
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- CN102806447B CN102806447B CN201210268299.XA CN201210268299A CN102806447B CN 102806447 B CN102806447 B CN 102806447B CN 201210268299 A CN201210268299 A CN 201210268299A CN 102806447 B CN102806447 B CN 102806447B
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- cutter
- blade
- grinding
- hob
- spherical
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Abstract
A method for manufacturing a spherical hob mainly includes selecting a gear sharper cutter, grinding the gear sharper cutter and cutting the gear sharper cutter by an electric discharge wire to machine a blade; discharging a material, roughly turning the material, machining an inner hole of the material, carrying out semi-finish turning, inserting a key slot, turning a chamfer on the key slot, roughly milling and carrying out semi-finish milling for a blade groove, turning a spiral support plate of a hob body, finely milling the blade groove, carrying out thermal treatment and grinding so as to machine the hob body; and mounting a small retainer ring on the hob body at first, then placing the blade in the blade groove, placing a clamping wedge in the blade groove, mounting another small retainer ring on the other side of the hob body, grinding a left stepped surface of the blade and an outer circle of a left plumber block of the hob body on a grinder in a unified manner, grinding a right stepped surface of the blade and an outer circle of a right plumber block of the hob body on the grinder in a unified manner; respectively arranging two large retainer rings on two sides of the hob body by means of hot charging, and grinding the inner hole. The method has the advantages that a complex form-relieve tooth machining process during manufacture of the spherical hob can be omitted, and manufacturing cost of the spherical hob can be lowered.
Description
Technical field
The present invention relates to a kind of manufacture method of cutter manufacture method, particularly spherical hobbing cutter.
Background technology
Spherical hobbing cutter is a kind of generating tool that is used for machining large internal gear.Key issue in spherical hobbing cutter manufacture is exactly teeth.Profile of tooth is distributed as spherical helix line structure, and due to the particularity of this structure, the processing method of common hobboing cutter is no longer applicable.Someone propose put into the melting pot or newly-designed machine for making gear teeth on carry out the teeth processing of spherical hobbing cutter, also someone proposes to carry out teeth processing on general five number of coordinates control milling machines.But these processing methods all inevitably need to be carried out complicated teeth technique, and teeth technique is also the highest technical process of the longest, processing cost consuming time in spherical hobbing cutter manufacture process.
Summary of the invention
The object of the present invention is to provide and a kind ofly can save complicated teeth process, and can reduce a kind of spherical hobbing cutter manufacture method of the manufacturing cost of spherical hobbing cutter.Solution of the present invention is from pinion cutter, directly to cut out blade, blade is arranged on the cutter hub of spherical hobbing cutter by accurate location and clamp mechanism, forms spheric helix, completes the manufacture of spherical hobbing cutter.
The manufacture method of spherical hobbing cutter is as follows:
1, the processing of blade: select pinion cutter-grinding-Wire EDM.
2, the processing of cutter hub: blanking-rough turn-processing endoporus-half finish turning-keyseat and car chamfering-rough mill and the film trap-heat treatment-grinding of half milling cutter film trap-turning cutter hub spiral support plate-milling cutter.
3, the assembling of spherical hobbing cutter:
(1), first little back-up ring is installed on cutter hub, then blade is put in insert groove, completes the location of blade on cutter hub.Put into clamping voussoir, realize the tangential clamping of blade on cutter hub.The little back-up ring of opposite side is installed, is realized axial grip.
(2), on grinding machine, complete the unified grinding of blade left side step surface and cutter hub left side pillow block cylindrical, the unified grinding of blade right side step surface and cutter hub right side pillow block cylindrical, for two large back-up rings of hot charging are prepared.
(3), by two large back-up rings respectively hot chargings in cutter hub both sides, realize radial clamping.
(4), inner bore grinding.The slight deformation that during due to assembling, clamping force can make endoporus produce, so also will carry out the grinding of endoporus.So far, complete the whole technical process of spherical hobbing cutter.
In the present invention, ensure the key of the spherical hobbing cutter accuracy of manufacture: one, the process of blade: the profile of tooth of spherical hobbing cutter is provided by standard pinion cutter, utilize manufactured standard pinion cutter, pass through Wire EDM, pinion cutter is cut into several blades by one group, every three teeth, in addition some in width and anterior angle are processed, and make the blade of spherical hobbing cutter.The 2nd, realize accurate location and the clamping of blade on cutter hub.Wherein the design of the location of blade on cutter hub and clamping structure is as follows, about location, is realized by the little back-up ring of insert groove and left side.Wherein insert groove limits five frees degree altogether, comprises two one-movement-freedom-degrees (move radially, tangentially move) and three rotational freedoms.The little back-up ring restriction one degree of freedom in left side (moving axially).About clamping, realize the tangential clamping of blade on cutter hub by clamping voussoir, the little back-up ring in right side is realized axial grip, and large back-up ring is realized radial clamping.
The present invention compared with prior art tool has the following advantages: the present invention directly cuts out blade from pinion cutter, need not carry out again the relief grinding of tooth Profile Machining and the relief angle of hobboing cutter, saved the design and manufacture cost of special purpose machine tool simultaneously, the manufacturing cost of spherical hobbing cutter is reduced, working (machining) efficiency improves.
Brief description of the drawings
Fig. 1 is that the blade master of spherical hobbing cutter of the present invention looks schematic diagram;
Fig. 2 is that the cutter hub master of spherical hobbing cutter of the present invention looks schematic diagram;
Fig. 3 is A-A view of Fig. 2;
Fig. 4 is that the large back-up ring master of spherical hobbing cutter of the present invention looks schematic diagram;
Fig. 5 is that the little back-up ring master of spherical hobbing cutter of the present invention looks schematic diagram;
Fig. 6 is that the entirety master of spherical hobbing cutter of the present invention looks schematic diagram;
Fig. 7 is the overall schematic top plan view of spherical hobbing cutter of the present invention.
In figure, 1 blade, 2 cutter hubs, 3 spiral support plates, 4 insert grooves, 5 pillow blocks, 6 endoporus, 7 end faces, 8 large back-up rings, 9 little back-up rings, 10 little back-up ring screws, 11 clamp voussoir, 12 voussoir screws.
Detailed description of the invention
1, the processing of blade: the structure of blade as shown in Figure 1,
(1) choose reasonable pinion cutter:
The modulus requiring according to spherical hobbing cutter and diameter are selected the size of pinion cutter, and determine the quantity of required pinion cutter according to the blade number of hobboing cutter and the pinion cutter number of teeth, accomplish to save to greatest extent pinion cutter.
(2) grinding:
On surface grinding machine, taking the small end face of pinion cutter as benchmark, corase grind large end face.It is 0 ° by the anterior angle mill on blade.
(3) Wire EDM:
Taking large end face as benchmark, line cuts pinion cutter, the width of pinion cutter is worked into the half of space width on cutter hub.Taking pinion cutter small end face and cutter tooth cylindrical as benchmark, pinion cutter line is cut into some blades again.Gear cutting setting after grinding, on slow feeding linear cutting bed, is added to man-hour by the axis inclination certain angle of the relative pinion cutter of copper wire, and this angle equals the lead angle of spherical hobbing cutter.By relatively moving of copper wire and workpiece, pinion cutter is cut into several blades.And often cut after next blade, the angle that pinion cutter need to rotate around self axis is 3 θ+θ/n, and wherein θ is the angle between any two adjacent cutters tooth, the blade number that n is hobboing cutter.In the process of line cutting, emphasis ensures the position degree requirement of locating surface.
2, the processing of cutter hub: the structure of cutter hub as shown in Figures 2 and 3,
(1) blanking: No. 45 steel of material, shape is cylindrical.
(2) rough turn: the rough turn blank cylindrical of a; Rough turn two pillow blocks of b; The rough turn both ends of the surface of c.
(3) processing endoporus: a bores endoporus; B expands endoporus; C cuts with scissors endoporus.
(4) half finish turning: a half finish turning pillow blocks; B half finish turning cutter hub both ends of the surface.
(5) keyseat and car chamfering: a keyseat, b car keyway chamfering, c car inner bore chamfering, d axletree platform chamfering.
(6) rough mill and half milling cutter film trap: taking endoporus 4 as benchmark, 8 insert grooves of milling, and make angle between insert groove and cutter hub axis equal the lead angle of hobboing cutter, also to ensure that calibration is even simultaneously.
(7) turning cutter hub spiral support plate: due to spherical helix gripper shoe processing difficulties, easy to process for making, do not affect the supporting role of gripper shoe simultaneously, spiral support plate structure is designed to taper shape.Engine lathe can complete processing.
(8) milling cutter film trap.
(9) heat treatment: modifier treatment is to HRC32-34.
(10) grinding: a grinds endoporus; B grinds pillow block; C grinds both ends of the surface; D sharpening film trap.
3, the assembling of spherical hobbing cutter: the overall structure of spherical hobbing cutter as shown in Figure 6, Figure 7,
(1), first by little back-up ring, as shown in Figure 5, be installed on cutter hub, then blade is put in insert groove, complete the location of blade on cutter hub.Put into clamping voussoir, realize the tangential clamping of blade on cutter hub.The little back-up ring of opposite side is installed, is realized axial grip.
(2), on grinding machine, complete the unified grinding of blade left side step surface and cutter hub left side pillow block cylindrical, the unified grinding of blade right side step surface and cutter hub right side pillow block cylindrical, for two large back-up rings of hot charging are prepared.
(3), by two large back-up rings, as shown in Figure 4, respectively hot charging, in cutter hub both sides, is realized radial clamping.
(4), the grinding of endoporus.During due to assembling, obtain the slight deformation that clamping force can make endoporus produce, so also will carry out the grinding of endoporus.So far, complete the whole process of spherical hobbing cutter.
Claims (1)
1. a spherical hobbing cutter manufacture method,
1) processing of blade: select pinion cutter-grinding-Wire EDM;
2) processing of cutter hub: blanking-rough turn-processing endoporus-half finish turning-keyseat and car chamfering-rough mill and the film trap-heat treatment-grinding of half milling cutter film trap-turning cutter hub spiral support plate-milling cutter;
3) assembling of spherical hobbing cutter:
(1) first little back-up ring is installed on cutter hub, then blade is put in insert groove, put into clamping voussoir, then the little back-up ring of opposite side is installed;
(2) on grinding machine, complete the unified grinding of blade left side step surface and cutter hub left side pillow block cylindrical, the unified grinding of blade right side step surface and cutter hub right side pillow block cylindrical;
(3) two large back-up rings are distinguished to hot chargings in cutter hub both sides;
(4) inner bore grinding; It is characterized in that: the process of blade: the profile of tooth of spherical hobbing cutter is provided by standard pinion cutter, utilize manufactured standard pinion cutter, pass through Wire EDM, pinion cutter is cut into several blades by one group, every three teeth, in addition some in width and anterior angle are processed, and make the blade of spherical hobbing cutter; When spherical hobbing cutter assembling, must ensure accurate location and the reliable grip of blade on cutter hub, about location, realized by the little back-up ring of insert groove and left side, wherein insert groove limits five frees degree altogether, comprise and move radially and tangentially move two one-movement-freedom-degrees and three rotational freedoms, one of the little back-up ring restriction in left side moves axially the free degree; About clamping, realize the tangential clamping of blade on cutter hub by clamping voussoir, the little back-up ring in right side is realized axial grip, and large back-up ring is realized radial clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210268299.XA CN102806447B (en) | 2012-07-31 | 2012-07-31 | Method for manufacturing spherical hob |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210268299.XA CN102806447B (en) | 2012-07-31 | 2012-07-31 | Method for manufacturing spherical hob |
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| Publication Number | Publication Date |
|---|---|
| CN102806447A CN102806447A (en) | 2012-12-05 |
| CN102806447B true CN102806447B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210268299.XA Expired - Fee Related CN102806447B (en) | 2012-07-31 | 2012-07-31 | Method for manufacturing spherical hob |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894801B (en) * | 2014-04-10 | 2016-04-20 | 哈尔滨飞机工业集团有限责任公司 | A kind of processing method of thin steel ring |
| CN107262754A (en) * | 2017-06-28 | 2017-10-20 | 西安航空职业技术学院 | A kind of quick-changing type exempts to reface circular knife and preparation method thereof |
| CN107287807B (en) * | 2017-08-03 | 2023-04-18 | 河南师范大学 | Can clear up drum-type ball ware that removes of sports shoes |
| CN110509126B (en) * | 2019-08-27 | 2020-07-14 | 江阴塞特精密工具有限公司 | Multi-grinding-wheel molding line shoveling and grinding process of ultra-small module gear hob |
| CN114260663A (en) * | 2021-12-23 | 2022-04-01 | 重庆机床(集团)有限责任公司 | High-precision worm and machining method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1874536A (en) * | 1930-12-05 | 1932-08-30 | Illinois Tool Works | Method of making milling cutters |
| GB872901A (en) * | 1959-02-04 | 1961-07-12 | Brown David Ind Ltd | New or improved milling cutter |
| US4023246A (en) * | 1975-08-28 | 1977-05-17 | Barber-Colman Company | Inserted blade hob |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847290B2 (en) * | 1979-09-03 | 1983-10-21 | 正人 相浦 | Lathe for manufacturing spherical hob for gear generation |
| CN102528411B (en) * | 2011-12-30 | 2015-03-11 | 中信重工机械股份有限公司 | Method for processing cutter blades of gear hob with inserted blades |
-
2012
- 2012-07-31 CN CN201210268299.XA patent/CN102806447B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1874536A (en) * | 1930-12-05 | 1932-08-30 | Illinois Tool Works | Method of making milling cutters |
| GB872901A (en) * | 1959-02-04 | 1961-07-12 | Brown David Ind Ltd | New or improved milling cutter |
| US4023246A (en) * | 1975-08-28 | 1977-05-17 | Barber-Colman Company | Inserted blade hob |
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| CN102806447A (en) | 2012-12-05 |
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