CN101708565A - Device and method for machining double-cutterhead milling teeth - Google Patents
Device and method for machining double-cutterhead milling teeth Download PDFInfo
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- CN101708565A CN101708565A CN200910232627A CN200910232627A CN101708565A CN 101708565 A CN101708565 A CN 101708565A CN 200910232627 A CN200910232627 A CN 200910232627A CN 200910232627 A CN200910232627 A CN 200910232627A CN 101708565 A CN101708565 A CN 101708565A
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Abstract
The invention provides a device for machining double-cutterhead milling teeth, which comprises a main shaft variable frequency motor (8) and is characterized in that the main shaft variable frequency motor (8) is connected with a double-cutterhead external milling tooth spindlet box (9), and a double-cutterhead structure is arranged on a double-cutterhead main shaft (23) of the double-cutterhead external milling tooth spindle box (9) which is arranged on a vertical feed planker (6); the vertical feed planker (6) is connected with a vertical feed system (7) which is provided with a chain wheel and a chain, the chain wheel and the chain are connected with a counterweight block (4), and the vertical feed system (7) is arranged on the stand column (3) of a double-cutterhead milling tooth machine tool. Compared with the prior art, the invention adopts the polar coordinate principle and the dislocation machining technology of double straight sided cutterheads, thus reducing the margin of the dedendum and addendum of the gears to be machined, enabling the margin of the tooth profiles to be even and creating advantages for subsequent finish machining, namely shortening the time of finish machining by two thirds and balancing the cutter abrasion.
Description
Technical field
The present invention relates to a kind of mill teeth manufacture field, big modulus external gear is carried out rough machined double-cutterhead milling teeth processing unit (plant) of high speed mill teeth and processing method thereof, belong to the advanced manufacturing technology field more specifically to the two mill teeth cutterheads of a kind of use.
Background technology
Gear is typical revolving meber, is divided into involute, cycloid, circular arc and parabola etc. by tooth curve, and wherein involute profile is most widely used.Gear working method is a lot, and mill teeth, gear shaping, gear hobbing, roll flute, shaving, gear honing etc. are arranged, and is divided into generation method and forming process two big classes by process principle.Generation method is to form conjugate profiles according to the envelope method principle, based on gear hobbing and gear shaping; Forming process is to utilize the cutter identical with the gear tooth slot shape to process gear-profile, based on mill teeth and roll flute.The gear milling mainly is meant with finger cutter or dish milling cutter and processes; 19 beginnings of the century, Britain begins to utilize the finger cutter machining of bevel gears; The seventies in 20th century, the former Soviet Union develops the big modulus fluting of KY-279 type and mills the external tooth lathe, adopts non-modulus dish milling cutter when rough milling, and adopts modulus dish milling cutter or taper shape " triumph " gear hob during finish-milling.
In recent years, along with the development of hard alloy cutter technology, high speed mill teeth technology has obtained extensive use.Polar-coordinate digital-control high speed tooth gear milling machine is the thick accurately machined special equipment of big modulus gear wheel in large diameter, and gear hobbing that working (machining) efficiency is more traditional and gear shaping technology have improved 3-5 doubly.The technological process of big modulus gear wheel in large diameter is: for soft tooth flank gear, and directly gear hobbing fine finishining after the mill teeth roughing; For hardened face gear, mill teeth roughing, quenching postforming grinding.This technological process will progressively replace the technology of traditional gear hobbing, gear shaping and shaping mill teeth.To large module gear roughing: require to improve as far as possible working (machining) efficiency on the one hand; On the other hand will be after roughing finish, for next procedure provides better manufacturability, the flank profil surplus that roughing or semifinishing keep is even.In the roughing of forming process mill teeth, disc milling cutter flank profil cross section is a straight line; And for saving cost, the gear of several moduluses that the cutter processing modulus of a kind of modulus of use is close usually on the engineering, this just causes the involute profile surplus of processing inhomogeneous, and especially tooth top and tooth root surplus are bigger, and flank profil surface heat is handled for this and the post forming grinding has a significant impact.The intertwining tooth processing technology of double-pole is arisen at the historic moment under this background just, and it can control the surplus of tooth root and tooth top under the situation that guarantees working (machining) efficiency.
Summary of the invention
The objective of the invention is to solve above-mentioned problems of the prior art with not enough, a kind of double-cutterhead milling teeth processing unit (plant) and processing method thereof are provided, to improve the uneven problem of current mill teeth roughing flank profil surplus, reduce allowance for finish, improve the present situation of finishing tool uneven wear, raise the efficiency, reduce cost.
Double-cutterhead milling teeth processing unit (plant) of the present invention and processing method thereof belong to domestic initiation.Double-cutterhead milling teeth is based on polar coordinates location and two straight wide cutterhead dislocation processing technology, can control the flank profil surplus of tooth top and tooth root, solve the uneven problem of hilted broadsword dish mill teeth flank profil surplus, for the time has been saved in follow-up fine finishining, machining accuracy is stable, has reduced processing cost.Directly roll flute or gear hobbing fine finishining has replaced original semifinishing with rough milling cutterhead after the double-cutterhead milling teeth roughing, and this technological process will progressively replace traditional hilted broadsword dish shaping mill teeth processing method that gets.
The technical solution used in the present invention is as follows:
A kind of double-cutterhead milling teeth processing unit (plant) comprises the main shaft variable-frequency motor, and described main shaft variable-frequency motor mills the external tooth main spindle box by the secondary double-pole dish that connects of main spindle box belt transmission, and the double-pole dish main shaft that the double-pole dish mills the external tooth main spindle box is provided with double-pole dish structure; The double-pole dish mills the external tooth main spindle box and is arranged on the vertical feed planker, and the vertical feed planker connects the vertical feed system, and the vertical feed system has been provided with the sprocket wheel chain, and the sprocket wheel chain connects balancing weight, and the vertical feed system is arranged on the column of double-cutterhead milling teeth lathe.
Described double-pole dish mills and comprises three of two of one of main spindle box, main spindle boxes, main spindle boxes, main spindle box idler shaft and the double-pole dish main shaft that is connected with a joggle successively, a connection main shaft of main spindle box variable-frequency motor in the external tooth main spindle box.
Described double-pole dish main shaft is made up of left main shaft and right main shaft, and left main shaft and right main shaft are provided with double-pole dish structure.
Described double-pole dish structure comprises left side dish milling cutter, right dish milling cutter, left keyboard, left positioning sleeve, left keyboard, right positioning sleeve, transition keyboard and spacer shell; When cutterhead is installed, earlier double-pole dish structure is assembled into integral body, is installed on the knife bar again.Be provided with knife bar in left side main shaft and the right main shaft, the knife bar end is provided with the axis system locking nut, knife bar is provided with left side dish milling cutter and right dish milling cutter, left side dish milling cutter left end is provided with the left keyboard that is set on the left main shaft, be provided with left positioning sleeve in the left keyboard, right dish milling cutter right-hand member is provided with left keyboard, is provided with right positioning sleeve in the left keyboard; Be provided with the transition keyboard between left side dish milling cutter and the right dish milling cutter, be provided with spacer shell in the transition keyboard, spacer shell is set on the knife bar.
The double-cutterhead milling teeth lathe is mainly by lathe bed, base, column, horizontal feed system, vertical feed system, swivel feeding system, and the double-pole dish mills compositions such as external tooth main spindle box.The swivel feeding system places on the base, the numerical control turntable of swivel feeding system control, and numerical control turntable is provided with the gear holder, is commonly called as bracket, passes through bolting external gear to be processed on the gear holder.The horizontal feed system comprises the horizontal feed ball screw assembly, of control column horizontal feed, and the vertical feed system comprises the vertical feed ball screw assembly, of control vertical feed planker vertical feed.
The double-pole dish structure that left side dish milling cutter and right dish milling cutter are formed is by the knife bar radial location, and left positioning sleeve and right positioning sleeve carry out axial location, the circumferential transmission of bilateral straight end-face key; Separate with driving the location, guarantees double-pole dish main shaft positioning accuracy.Adopt matched in clearance and relief arrangement between knife bar and the double-pole dish main shaft, do not bear moment of torsion.
Described spindle drive is driven by the main shaft variable-frequency motor that places the double-pole dish to mill external tooth main spindle box casing top and through the timing belt of main spindle box belt transmission pair and many to gear pair, divide two-way to be transferred to double-pole dish main shaft, and adopt straight end-face key to drive double-pole dish structure, total reduction ratio is 16.9, the main shaft rated speed is 87.1rpm, the facing cutter diameter is 380-480mm, and maximum milling speed is 180m/min.
A kind of double-cutterhead milling teeth processing method, this method utilizes the double-cutterhead milling teeth lathe to carry out interpolation in the space polar coordinate system of external gear to be processed, with the numerical control turntable center is limit, the numerical control turntable corner is a polar angle, numerical control turntable radius and double-pole dish its horizontal displacement sum are utmost point footpath, and structure vertical feed of double-pole dish and numerical control turntable swivel feeding link and realize the roughing of big modulus external gear;
This method may further comprise the steps:
External gear to be processed is fixed on the numerical control turntable of double-cutterhead milling teeth lathe, the double-cutterhead milling teeth processing unit (plant) is installed on the double-cutterhead milling teeth lathe;
At the external gear mill teeth processing of the different moduluses and the number of teeth, adjust left side dish milling cutter and the distance between the right dish milling cutter and the distance control tooth root of cutterhead axle center and numerical control turntable and the flank profil surplus of tooth top of double-cutterhead milling teeth processing unit (plant) double-pole dish structure;
Each teeth groove of external gear to be processed is by left side dish milling cutter and the right dish milling cutter mill teeth that misplaces, control the tooth top and the tooth root flank profil surplus of external gear to be processed, solve the uneven problem of hilted broadsword dish mill teeth flank profil surplus, the follow-up fine finishining time shortens to original 1/3, tool wear is even, and machining accuracy is stable.
Distance between described left side dish milling cutter and the right dish milling cutter by module, stride the number of teeth and the decision of cutterhead size, regulate by the thickness of left positioning sleeve and right positioning sleeve, and guarantee that left side dish milling cutter and right dish milling cutter are about numerical control turntable center symmetry.
The invention has the beneficial effects as follows:
Compared with prior art, the present invention has adopted polar coordinates principle and two straight wide cutterhead dislocation processing technology, the tooth root and the tooth top surplus of gear to be processed have been reduced, make that the flank profil surplus is even, for advantage has been created in follow-up fine finishining---the fine finishining time shortens to original 1/3, and tool wear is even.Double-cutterhead milling teeth processing unit (plant) of the present invention has adopted modular design concept, and is simple in structure, can exchange between double-pole disc system and the hilted broadsword disc system, and the positioning sleeve of identical modulus cutterhead can exchange.Double-cutterhead milling teeth processing method of the present invention is integrated mill teeth roughing and semifinishing, directly roll flute or gear hobbing fine finishining has improved working (machining) efficiency behind the double-cutterhead milling teeth, and this technological process will progressively replace traditional hilted broadsword dish shaping mill teeth processing method that gets.
Description of drawings
Fig. 1 is a complete machine structure schematic diagram of the present invention;
Fig. 2 is a tooth gear milling machine kinematic scheme of the present invention;
Fig. 3 mills the structure chart of external tooth main spindle box for double-pole dish of the present invention;
Fig. 4 is the relative displacement schematic diagram of double-pole dish structure of the present invention and workpiece;
Fig. 5 is a double-pole dish structure processing involute teeth groove schematic diagram of the present invention;
Fig. 6 is a double-pole dish spindle mounted schematic diagram of the present invention.
Part description among the figure:
1, lathe bed, 2, the horizontal feed system, 3, column, 4, balancing weight, 5, the sprocket wheel chain, 6, the vertical feed planker, 7, the vertical feed system, 8, the main shaft variable-frequency motor, 9, the double-pole dish mills the external tooth main spindle box, 10, double-pole dish structure, 11, external gear to be processed, 12, the gear holder, 13, numerical control turntable, 14, base, 15, the swivel feeding system, 16, the horizontal feed ball screw assembly,, 17, the vertical feed ball screw assembly,, 18, main spindle box belt transmission pair, 19, one of main spindle box, 20, two of main spindle boxes, 21, three of main spindle boxes, 22, the main spindle box idler shaft, 23, double-pole dish main shaft, 24, the axis system locking nut, 25 left main shafts, 26, left keyboard, 27, left side positioning sleeve, 28, left side dish milling cutter, 29, the transition keyboard, 30, spacer shell, 31, right dish milling cutter, 32, left keyboard, 33, right positioning sleeve, 34, right main shaft, 35, knife bar.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
Embodiment one.
A kind of double-cutterhead milling teeth processing unit (plant) comprises main shaft variable-frequency motor 8, and described main shaft variable-frequency motor 8 connects the double-pole dish by main spindle box belt transmission secondary 18 and mills external tooth main spindle box 9, and the double-pole dish main shaft 23 that the double-pole dish mills external tooth main spindle box 9 is provided with double-pole dish structure 10; The double-pole dish mills external tooth main spindle box 9 and is arranged on the vertical feed planker 6, vertical feed planker 6 connects vertical feed system 7, vertical feed system 7 has been provided with sprocket wheel chain 5, and sprocket wheel chain 5 connects balancing weight 4, and vertical feed system 7 is arranged on the column 3 of double-cutterhead milling teeth lathe.
The double-pole dish mills and comprises three 21 of two 20 of one 19 of main spindle box, main spindle boxes, main spindle boxes, main spindle box idler shaft 22 and the double-pole dish main shaft 23 that is connected with a joggle successively in the external tooth main spindle box 9, and one 19 of main spindle box connects main shaft variable-frequency motor 8.
Double-pole dish main shaft 23 is made up of left main shaft 25 and right main shaft 34, and left main shaft 25 and right main shaft 34 are provided with double-pole dish structure 10.
Double-pole dish structure 10 comprises left side dish milling cutter 28, right dish milling cutter 31, left keyboard 26, left positioning sleeve 27, left keyboard 32, right positioning sleeve 33, transition keyboard 29 and spacer shell 30; When cutterhead is installed, earlier double-pole dish structure is assembled into integral body, is installed on the knife bar again.Be provided with knife bar 35 in left side main shaft 25 and the right main shaft 34, knife bar 35 ends are provided with axis system locking nut 24, knife bar 35 is provided with left side dish milling cutter 28 and right dish milling cutter 31, left side dish milling cutter 28 left ends are provided with the left keyboard 26 that is set on the left main shaft 25, be provided with left positioning sleeve 27 in the left keyboard 26, right dish milling cutter 31 right-hand members are provided with left keyboard 32, are provided with right positioning sleeve 33 in the left keyboard 32; Be provided with transition keyboard 29 between left side dish milling cutter 28 and the right dish milling cutter 31, be provided with spacer shell 30 in the transition keyboard 29, spacer shell 30 is set on the knife bar 35.
The double-cutterhead milling teeth lathe is mainly by lathe bed 1, base 14, column 3, horizontal feed system 2, vertical feed system 7, swivel feeding system 15, and the double-pole dish mills external tooth main spindle box 9 compositions such as grade.Swivel feeding system 15 places on the base 14, the numerical control turntable 13 of swivel feeding system 15 controls, and numerical control turntable 13 is provided with gear holder 12, is commonly called as bracket, passes through bolting external gear 11 to be processed on the gear holder 12.Horizontal feed system 2 comprises the horizontal feed ball screw assembly, 16 of control column 3 horizontal feeds, and vertical feed system 7 comprises the vertical feed ball screw assembly, 17 of control vertical feed planker 6 vertical feeds.
The double-pole dish structure 10 that left side dish milling cutter 28 and right dish milling cutter 31 are formed is by knife bar 35 radial locations, and left positioning sleeve 27 and right positioning sleeve 33 carry out axial location, the circumferential transmission of bilateral straight end-face key; Separate with driving the location, guarantees double-pole dish main shaft 23 positioning accuracies.Adopt matched in clearance and relief arrangement between knife bar 35 and the double-pole dish main shaft 23, do not bear moment of torsion.
Embodiment two.
A kind of double-cutterhead milling teeth processing method, this method utilizes the double-cutterhead milling teeth lathe to carry out interpolation in the space polar coordinate system of external gear 11 to be processed, with numerical control turntable 13 centers is limit, numerical control turntable 13 corners are polar angle, numerical control turntable 13 radiuses and double-pole dish structure 10 horizontal displacement sums are utmost point footpath, and 10 vertical feeds of double-pole dish structure and numerical control turntable 13 swivel feedings link and realize the roughing of big modulus external gear;
This method may further comprise the steps:
External gear 11 to be processed is fixed on the numerical control turntable 13 of double-cutterhead milling teeth lathe, the double-cutterhead milling teeth processing unit (plant) is installed on the double-cutterhead milling teeth lathe;
At the external gear mill teeth processing of the different moduluses and the number of teeth, adjust left side dish milling cutter 28 and the distance between the right dish milling cutter 31 and the distance control tooth root of cutterhead axle center and numerical control turntable 13 and the flank profil surplus of tooth top of double-cutterhead milling teeth processing unit (plant) double-pole dish structure 10;
Each teeth groove of external gear 11 to be processed is by left side dish milling cutter 28 and right dish milling cutter 31 mill teeth that misplaces, control the tooth top and the tooth root flank profil surplus of external gear 11 to be processed, solve the uneven problem of hilted broadsword dish mill teeth flank profil surplus, the follow-up fine finishining time shortens to original 1/3, tool wear is even, and machining accuracy is stable.
Distance between left side dish milling cutter 28 and the right dish milling cutter 31 by module, stride the number of teeth and the decision of cutterhead size, regulate by the thickness of left positioning sleeve 27 and right positioning sleeve 33, and guarantee that left side dish milling cutter 28 and right dish milling cutter 31 are about numerical control turntable 13 center symmetries.
As Fig. 1, the double-cutterhead milling teeth lathe mainly mills external tooth main spindle box 9 etc. by lathe bed 1, base 14, column 3, horizontal feed system 2, vertical feed system 7, rotary table 13 and double-pole dish and forms, rotary table 13 places on the base, and the double-pole dish mills external tooth main spindle box 9 and places on the vertical feed planker 6.All feedings are controlled by digital control system, with rotary table 13 centers is limit, and rotary table 13 corners are polar angle, and rotary table 13 radiuses and horizontal feed displacement sum are utmost point footpath, be equipped with independently developed plane polar coordinates numerical control curved surface interpolation software, realize the involute profile form milling.
As Fig. 2, transmission system comprises, swivel feeding system 15, horizontal feed ball screw assembly, 16 and vertical feed ball screw assembly, 17, and swivel feeding system 15 is made up of planetary reduction gear 15, worm-gears Z1 and Z2, gear pair Z3, gear pair Z4.Rotary table 13 centers are equipped with round grating, constitute the full cut-off ring with digital control system.Column 3 adopts 4 synchronous hydraulic clamp mechanism with lathe bed 1 guide rail, adopts 4 synchronous hydraulic damping mechanisms between rotary table 13 turntable table tops and the base 1, has guaranteed lathe rigidity.
As Fig. 3, the double-pole dish mills external tooth main spindle box 9 box sizes and the drive mechanism process is optimized, spindle drive is driven by the main shaft variable-frequency motor 8 that places the double-pole dish to mill external tooth main spindle box 9 casing tops and through the timing belt of main spindle box belt transmission pair 18 and many to gear pair, divide two-way to be transferred to double-pole dish main shaft 23, and adopt straight end-face key to drive double-pole dish structure 10, and total reduction ratio is 16.9, the main shaft rated speed is 87.1rpm, the facing cutter diameter is 380-480mm, and maximum milling speed is 180m/min; Gear pair is: three grades of driving gear pair Z5 of main spindle box, main spindle box idle pulley driving gear pair Z6, main spindle box level Four driving gear pair Z7, the two helical pitch worm couple Z8 of turntable and Z9, turntable gear pair Z10, turntable gear pair Z11.
As Fig. 4, the striding number of teeth order and can decide as the case may be of external gear 11 to be processed.Among the figure, L1 is the distance of the left side dish milling cutter 28 and the right dish milling cutter 31 of double-pole dish structure, and with module, to stride the number of teeth relevant, L2 is the distance at knife bar 35 centers and external gear to be processed 11 centers, and is relevant with the size of flank profil surplus; L2 controls by the horizontal feed system 2 of lathe, and as Fig. 6, L1 is by the adjusting device of double-pole dish structure 10, and promptly transition keyboard 29 and spacer shell 30 guarantee.
As Fig. 5, I represents the Working position of left side dish milling cutter 28, and II represents the Working position of right dish milling cutter 31.Processing method of the present invention has adopted the intertwining tooth processing technology of double-pole, and the teeth groove of each external gear 11 to be processed carries out list by left side dish milling cutter 28 and right dish milling cutter 31 and divides tooth forming process dislocation cutting; The flank profil surplus of the tooth root of involute profile and tooth top is controlled, has solved the uneven problem of flank profil surplus that hilted broadsword dish mill teeth occurs.
As Fig. 6, double-pole dish main shaft 23 comprises left main shaft 25, right main shaft 34, knife bar 35, locking nut 24 and double-pole dish structure 10; Double-pole dish structure 10 is made up of left side dish milling cutter 28, right dish milling cutter 31, left positioning sleeve 27, right positioning sleeve 33, spacer shell 30, left keyboard 26, left keyboard 32 and transition keyboard 29; Double-pole dish structure 10 is carried out radial location by knife bar 35, and left positioning sleeve 27, right positioning sleeve 33 and spacer shell 30 carry out axial location, and straight end-face key carries out circumferential transmission; Separate with driving the location, has guaranteed double-pole dish main shaft 23 positioning accuracies.When left side dish milling cutter 28 and right dish milling cutter 31 are installed, earlier double-pole dish structure 10 is assembled into integral body, is installed on again on the knife bar 35.Distance L 1 between left side dish milling cutter 28 and right dish milling cutter 31 cutterheads is by changing the thickness adjustment of spacer shell 30, and the thickness of the right positioning sleeve 33 of repair simultaneously guarantees that the double-pole dish is about turntable center symmetry.
Embodiment recited above is described preferred implementation of the present invention; be not that design of the present invention and scope are limited; do not breaking away under the design concept prerequisite of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention, the technology contents that the present invention asks for protection all is documented in claims.
Claims (6)
1. double-cutterhead milling teeth processing unit (plant), comprise main shaft variable-frequency motor (8), it is characterized in that described main shaft variable-frequency motor (8) connects the double-pole dish by main spindle box belt transmission pair (18) and mills external tooth main spindle box (9), the double-pole dish main shaft (23) that the double-pole dish mills external tooth main spindle box (9) is provided with double-pole dish structure (10); The double-pole dish mills external tooth main spindle box (9) and is arranged on the vertical feed planker (6), vertical feed planker (6) connects vertical feed system (7), vertical feed system (7) has been provided with sprocket wheel chain (5), sprocket wheel chain (5) connects balancing weight (4), and vertical feed system (7) is arranged on the column (3) of double-cutterhead milling teeth lathe.
2. double-cutterhead milling teeth processing unit (plant) according to claim 1, it is characterized in that described double-pole dish mills comprises main spindle box (19), main spindle box two (20), main spindle box three (21), main spindle box idler shaft (22) and double-pole dish main shafts (23) that are connected with a joggle successively in the external tooth main spindle box (9), main spindle box one (19) connects main shaft variable-frequency motor (8).
3. double-cutterhead milling teeth processing unit (plant) according to claim 2 is characterized in that described double-pole dish main shaft (23) is made up of left main shaft (25) and right main shaft (34), and left main shaft (25) and right main shaft (34) are provided with double-pole dish structure (10).
4. double-cutterhead milling teeth processing unit (plant) according to claim 3 is characterized in that described double-pole dish structure (10) comprises left side dish milling cutter (28), right dish milling cutter (31), left keyboard (26), left positioning sleeve (27), left keyboard (32), right positioning sleeve (33), transition keyboard (29) and spacer shell (30); Be provided with knife bar (35) in left side main shaft (25) and the right main shaft (34), knife bar (35) end is provided with axis system locking nut (24), knife bar (35) is provided with left side dish milling cutter (28) and right dish milling cutter (31), left side dish milling cutter (28) left end is provided with the left keyboard (26) that is set on the left main shaft (25), be provided with left positioning sleeve (27) in the left keyboard (26), right dish milling cutter (31) right-hand member is provided with left keyboard (32), is provided with right positioning sleeve (33) in the left keyboard (32); Be provided with transition keyboard (29) between left side dish milling cutter (28) and the right dish milling cutter (31), be provided with spacer shell (30) in the transition keyboard (29), spacer shell (30) is set on the knife bar (35).
5. double-cutterhead milling teeth processing method, it is characterized in that this method utilizes the double-cutterhead milling teeth lathe to carry out interpolation in the space polar coordinate of external gear to be processed (11) system, with numerical control turntable (13) center is limit, numerical control turntable (13) corner is a polar angle, numerical control turntable (13) radius and double-pole dish structure (10) horizontal displacement sum are utmost point footpath, and (10) vertical feed of double-pole dish structure and numerical control turntable (13) swivel feeding link and realize the roughing of big modulus external gear;
This method may further comprise the steps:
External gear to be processed (11) is fixed on the numerical control turntable (13) of double-cutterhead milling teeth lathe, the double-cutterhead milling teeth processing unit (plant) is installed on the double-cutterhead milling teeth lathe;
At the external gear mill teeth processing of the different moduluses and the number of teeth, adjust left side dish milling cutter (28) and the distance control tooth root of the distance between the right dish milling cutter (31) and cutterhead axle center and numerical control turntable (13) and the flank profil surplus of tooth top of double-cutterhead milling teeth processing unit (plant) double-pole dish structure (10);
Each teeth groove of external gear to be processed (11) coils milling cutter (28) and right dish milling cutter (31) mill teeth that misplaces by a left side, controls the tooth top and the tooth root flank profil surplus of external gear to be processed (11).
6. double-cutterhead milling teeth processing method according to claim 5, it is characterized in that distance between described left side dish milling cutter (28) and the right dish milling cutter (31) by module, stride the number of teeth and the cutterhead size determines, thickness by left positioning sleeve (27) and right positioning sleeve (33) is regulated, and guarantees that left side dish milling cutter (28) and right dish milling cutter (31) are about numerical control turntable (13) center symmetry.
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| CN2009102326279A CN101708565B (en) | 2009-12-03 | 2009-12-03 | Device and method for machining double-cutterhead milling teeth |
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| CN2009102326279A CN101708565B (en) | 2009-12-03 | 2009-12-03 | Device and method for machining double-cutterhead milling teeth |
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| CN105033723A (en) * | 2015-08-27 | 2015-11-11 | 天津第一机床总厂 | Machine tool cutter adjusting device based on hand wheel |
| CN105215475A (en) * | 2015-08-27 | 2016-01-06 | 天津第一机床总厂 | Numerical control Double-cutter straight bevel gear generating machine |
| CN105436623A (en) * | 2016-01-08 | 2016-03-30 | 南京工大数控科技有限公司 | Method for processing hard tooth surface of medium-precision large-modulus cylindrical gear |
| CN105458408A (en) * | 2016-01-08 | 2016-04-06 | 南京工大数控科技有限公司 | Double-station numerical-control efficient rack gear milling machine |
| CN106238830A (en) * | 2016-08-29 | 2016-12-21 | 西北工业大学 | A kind of processing method with bowl-shape disc milling cutter milling face gear |
| CN108747234A (en) * | 2018-05-28 | 2018-11-06 | 中实洛阳重型机械有限公司 | A kind of processing method of heavy-duty machinery herringbone gear |
| CN110340455A (en) * | 2019-07-08 | 2019-10-18 | 安徽国防科技职业学院 | A kind of gear working method for processing gear by chain cutter tooth wheel machining tool |
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| GB119865A (en) * | 1917-10-01 | 1919-02-27 | Erik Hjalmar Wingqvist | Improvements in or relating to Machines for Cutting Gear-Wheels |
| US4534684A (en) * | 1982-09-30 | 1985-08-13 | Johnson Bernard H | Apparatus for milling a gear for a double enveloping worm gear drive |
| CN2871084Y (en) * | 2005-10-28 | 2007-02-21 | 南京工业大学 | Multifunctional high-speed milling lathe with polar coordinate digital control |
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