CN203711951U - Direct-driving type zero-transmission full numerical control spline shaft milling machine - Google Patents
Direct-driving type zero-transmission full numerical control spline shaft milling machine Download PDFInfo
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- CN203711951U CN203711951U CN201420036982.5U CN201420036982U CN203711951U CN 203711951 U CN203711951 U CN 203711951U CN 201420036982 U CN201420036982 U CN 201420036982U CN 203711951 U CN203711951 U CN 203711951U
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Abstract
The utility model discloses a direct-driving type zero-transmission full numerical control spline shaft milling machine. The direct-driving type zero-transmission full numerical control spline shaft milling machine comprises a transmission system, a numerical control system, a construction system and a matched device, wherein the transmission system is composed of six servo shafts: a shaft A, a shaft B, a shaft C, a shaft X, a shaft Y and a shaft Z, and is operated by a full numerical control system; a workpiece main shaft box is arranged at one end of a milling machine body and a tailstock box is arranged at the other end of the milling machine body; a tool main shaft box for driving a hobbing cutter to rotate is arranged in the middle of the milling machine body; the milling machine body is provided with a translation device which moves horizontally along the directions of the shaft X, the shaft Y and the shaft Z; the shaft X, the shaft Y and the shaft Z are vertical two by two in the space; the shaft X is arranged along the front-back direction, the shaft Y is arranged along the up-down direction and the shaft Z is arranged along the left-right direction; an infrared tool setting device is arranged in front of the milling machine body. The direct-driving type zero-transmission full numerical control spline shaft milling machine adopts a direct-driving type zero-transmission mode so as to radically remove accumulative errors and index errors; the machining precision is high and a full closed-loop numerical control system realizes high-speed and efficient operation; dry cutting machining and secondary hobbing work can be realized and the surface quality is good.
Description
Technical field
The utility model relates to splined shaft in a kind of power transmission shaft industry and manufactures process technology equipment field, particularly a kind of direct-drive type zero transmission Full-numerical-control spline milling machine.
Background technology
At power transmission shaft, manufacture in processing technique field, spending strong axle is to be widely used in the spare part in common use connecting between various power transmission shafts, tradition manufacturing processing technic is used gear-hobbing machine to carry out roughing mostly, then carry out fine grinding processing, because gear-hobbing machine precision and efficiency all can not meet the needs of splined shaft technological level, cause that splined shaft production and processing efficiency is low, cost is high, be difficult to batch production.
Existing numerical control spline milling machine is generally to reequip on common mechanical type milling machine, common electric machine on mechanical type milling machine is replaced with to servomotor or stepper motor, each through-drive chain is still by mechanical part transmissions such as gears, so do not improve in its machining accuracy, just reduce labour intensity, improving production efficiency; Existing numerical control spline milling machine, there is part axle by servo motor transmission, although the mechanical part transmission such as multi-stage gear is simplified to some extent in each through-drive chain, but adopt mechanical transmission more, still cannot thoroughly eliminate the impact of accumulated error and the error of division; Adopt mechanical transmission, driving error is large, transmission accuracy is low, process velocity is slow, equipment failure rate is high, maintenance is complicated.Spline machining precision has determined the effect that power transmission shaft is brought into play, and not only can have impact to the use of splined shaft itself and wearing and tearing, also can have influence on service life and the wearing and tearing of power transmission shaft simultaneously.
Relevant technological improvement and structure optimization in industry, patent of invention CN102658393A, a kind of spline miller device, disclose a kind of device that utilizes traditional milling machine transformation to process corresponding splined shaft workpiece, shortcoming is that accumulated error and the error of division that the gear transmission chain of traditional milling machine produces is unavoidable; Patent CN102825310A, a kind of vertical double-sided milling machine, discloses polygon angle process technology of a kind of while, improve the milling machine of processing splined shaft production efficiency, but its whole kind of drive remains stage-geared, and precision and the error of division of its processing are limited.Patent CN202763222U, a kind of indexing means of processing roll axle spline, disclose a kind of processing of involute splined shaft, be particularly useful for the processing unit (plant) of large-scale roller axle spline, shortcoming is the global error restriction that the precision of device own is limited to corresponding spline milling machine completely.
In prior art, the workpiece spindle of spline milling machine and cutter shaft and three relevant axes of coordinates are controlled, also more or less retaining gear transmission mode, exactly because also in crucial workpiece spindle and cutter shaft direction, there is no the reform of essence, cause the precision of current splined shaft manufacturing processing technic good not, the efficiency of production is not high, the operation stability of spline milling machine is bad, is difficult to carry out the secondary operations of splined shaft parts; The spline machining milling machine that lacks a kind of high-efficiency high-precision Full-numerical-control, meets the needs of Practical manufacturing and production.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of direct-drive type zero transmission Full-numerical-control spline milling machine, for existing defect problem in splined shaft manufacture processing, thoroughly remove four intermediate transmission link gears of numerical control spline milling machine cutter shaft B and two intermediate transmission link gears of workpiece spindle C, be related on the precision axis of workpiece to be machined, all adopt direct-drive type zero transmission mode, fundamentally avoid the accumulated error and the error of division that due to gear drive, cause, improve the machining accuracy of workpiece; Adopt Full-numerical-control mode to improve the batch production efficiency of whole spline milling machine; Divide tooth and differential implementation closed-loop to control, guarantee the stability operation of whole spline milling machine; Optimize structural design and the tool setting function of complete machine, realize splined shaft manufacture processing and the secondary hobbing processing of high-accuracy high-efficiency rate.
For achieving the above object, the technical solution of the utility model is as follows: a kind of direct-drive type zero transmission Full-numerical-control spline milling machine, comprises that transmission system, digital control system, tectonic system and corollary apparatus form; It is characterized in that:
Described Design of Transmission System technical scheme is: by six axis servomotors: cutter angular adjustment axle A; Cutter spindle B; Work spindle C; Feed shaft X; Alter cutter shaft Y and walk cutter shaft Z; Formed the agent structure of direct-drive type zero transmission Full-numerical-control spline milling machine; 6 described axis servomotors are undertaken numerical control operated by upper digital control system by generation method hobbing principle; Upper digital control system, according to technological parameter, is exported corresponding pulse and is driven corresponding servomotor to each axis servomotor, and the encoder of respective shaft or grating scale feed back to upper digital control system by position signalling.And adopt 15 cun of very color touch screens as operation interface, directly perceived, convenient; The concrete technical scheme of each operating axis is as follows:
B axle: directly drive (zero transmission) cutter shaft rotation by B shaft hollow servomotor; (directly driving);
C axle: directly drive (DDR) (zero transmission) workpiece spindle rotation by C shaft hollow moment servomotor (DD); (directly driving);
X-axis: directly drive ball-screw 47 band cutters to realize cutter shaft radial feed by X-axis servomotor; (directly driving);
Z axis: directly drive ball-screw 41 band cutters to realize cutter shaft long feed by Z axis servomotor; (directly driving);
Y-axis: drive T-shaped leading screw 28 to realize the upper and lower integral body of cutter shaft by Y-axis servomotor by reductor 30 and alter cutter;
A axle: drive scroll bar 351 to drive turbine 352 to realize milling head angle adjustment by reductor 53 by A axle servomotor.
Described hollow torque motor is called for short DD, and described hollow torque motor directly drives load to be called for short DDR; The advantage of DDR be without intermediate transmission link as belt, gear-box etc., without backlass, torque motor, be hollow shaft etc.
The utility model direct-drive type zero transmission numerical control spline milling machine application built-in electric motor directly drives technology, and cutter shaft adopts hollow servomotor to be directly sleeved on cutter spindle, and main shaft tail is coaxially installed a position coder feedback main spindle's; Workpiece spindle adopts the hollow torque motor of high pulling torque (DDR) to be directly sleeved on work spindle, that by motor, had by oneself and the position direct-connected high precision position encoder feedback workpiece spindle of rotor.Between workpiece and cutter, there is not so any mechanical transmission component, be referred to as " zero transmission "; Feedback element direct-detection hobboing cutter and work shaft position, formed the closed-loop of real meaning.Can obtain desirable indexing accuracy and good surface quality.
Described generation method also claims generating, Conjugate method or envelope method; It is during according to a pair of meshed transmission gear, and the flank profil of the two-wheeled each other principle of conjugate curves is processed.When splined shaft, gear hob cutting, the shape of hobboing cutter is as a spiral, and its projection on wheel blank end face is a tooth bar, and when hobboing cutter rotates continuously, the projection tooth bar that is equivalent to an endless moves forward.When processing splined shaft, straight spur gear, because the helix of hobboing cutter must be consistent with the teeth directional of splined shaft, spur gear, therefore need to be a lead angle of hobboing cutter axis inclination; The relative motion of hobboing cutter and wheel blank has two, and one is rolling movement, and for cutting goes out required number of teeth z, another is feed motion, and hobboing cutter moves along wheel blank axis direction.
The technical scheme of described tectonic system, digital control system and corollary apparatus is: on milling machine body, be provided with the direct-drive type workpiece spindle box that drives workpiece rotation, be provided with work spindle, i.e. C axle in described workpiece spindle box; On described milling machine body, be provided with the direct-drive type tool head that drives hobboing cutter rotation, described tool head is provided with cutter spindle, i.e. B axle; On described milling machine body, be provided with drive tool head by processing request the translating device along the translation of X, Y, Z axis direction, the cutting-tool angle adjusting device that drives tool head to turn along YZ plane internal rotation by processing request, i.e. A axle; Described X, Y, Z axis is vertical between two in space, and X-axis is along fore-and-aft direction setting, and Y-axis is along upper and lower to setting, and Z axis is along left and right directions setting.In milling machine body the place ahead, be also provided with infrared ray tool setting device, be convenient to the workpiece secondary operations after clamping again.
Closed-loop in the utility model is controlled cutter shaft (B axle), workpiece spindle (C axle), radial feed (X-axis) and axial feed (Z axis); The current physical location of cutter shaft encoder direct-detection cutter shaft also feeds back to upper digital control system, and upper digital control system obtains the current physical location of cutter shaft by cutter shaft encoder, do not need to arrange in addition detecting element.
The current physical location of described workpiece spindle moment encoder for servo motor direct-detection workpiece spindle also feeds back to upper digital control system, and upper digital control system obtains the current physical location of workpiece spindle by workpiece spindle encoder, do not need to arrange in addition detecting element.
X-direction is provided with grating scale and detects X-axis feed box physical location; Z-direction is provided with grating scale and detects Z axis feed box physical location.
Described cutter translating device and nose angle adjusting device comprise can along the Z axis supporting plate mechanism of Z-direction translation, can along the X-axis feed box of X-direction translation, can be along the Y-axis dragging plate mechanism of Y-axis translation.And drive tool head at the cutting-tool angle adjusting device of YZ rotation with in surface.Z axis supporting plate mechanism is arranged on milling machine body by rail plate pair, and X-axis feed box is arranged on Z axis supporting plate mechanism by rail plate pair, and Y-axis dragging plate mechanism is arranged on X-axis feed box front end, and A axle is arranged on X-axis feed box upper left quarter by worm gear pair.
Described direct-drive type workpiece spindle box is arranged on one end of milling machine body, and work spindle is set to C axle (rotating shaft), by the hollow servomotor of torque type, passes through the direct Driven by Coaxial of connector.Work spindle is hollow shaft, and its right-hand member is provided with center sleeve, drives the driver plate of workpiece.
The rotating speed of direct-drive type work spindle is followed according to generating process principle according to the rotating speed of direct-drive type cutter spindle automatically by upper control system.The coaxial high-precision encoder that the actual circumferential position of work spindle is carried by the hollow servomotor of torque type is determined.
Direct-drive type tool head comprises cutter spindle casing, cutter spindle, knife bar, hollow servomotor, connector, knife bar pull bar, high-precision encoder and bracket; Cutter spindle is set to B axle (rotating shaft), by hollow servomotor, by connector, is directly driven.The actual circumferential position of cutter spindle is determined by coaxial high-precision encoder.Knife bar is strained by pull bar, and the hobboing cutter of different size can be installed on knife bar, at knife bar tail end, is provided with knife bar bracket.
The other end of milling machine body is provided with removable tailstock case, and tailstock case can move by sliding surface on milling machine body.Tailstock case is provided with tailstock centre, and tailstock centre and direct-drive type work spindle are coaxially oppositely arranged, and by barrel of tail stock, by cylinder component, is driven and can be moved along its axial stretching, holds out against or unclamp the centre of gyration of workpiece to be processed.Between tailstock casing left end and barrel of tail stock, be provided with 4 locking oil cylinders of stopping, eliminate the gap between barrel of tail stock and tailstock casing.
Z axis dragging plate mechanism comprises Z axis supporting plate seat, Z axis servomotor, Z axis ball screw assembly.Z axis servomotor is tied and is directly driven Z axis ball screw assembly, by connecting shaft, by the screw Connection Block on ball screw assembly,, drives cutter long feed.Z axis dragging plate mechanism is arranged on milling machine body by plastic-sticking guiding rail.
X-axis feed mechanism is arranged on Z axis dragging plate mechanism by plastic-sticking guiding rail.Comprise X-axis feed box, X-axis servomotor, X-axis ball screw assembly.X-axis servomotor is tied and is directly driven X-axis ball screw assembly, by connecting shaft, and X-axis screw Connection Block is fixed on Z axis supporting plate seat, and X-axis ball-screw is arranged on X-axis feed box; Rotary actuation feed box by ball-screw moves forward and backward to realize cutter radial feed.
Y-axis supporting plate mechanism comprises Y-axis planker seat, Y-axis servomotor, decelerator, connecting shaft knot, T-shaped lead screw pair, nut seat.Y-axis servomotor connection reducer, then connecting shaft knot, then drive T-shaped lead screw pair, by the nut seat being fixed in T-shaped lead screw pair, drives direct-drive type tool head to move along Y-direction, realizes cutter and alter cutter function.Y-axis supporting plate mechanism is fixed on gyroaxis.Y-axis supporting plate mechanism, by pull bar, gyroaxis, is arranged on feed box.By butterfly spring group, accurate locking nut, coupling mechanism force acts on pull bar, and Y-axis supporting plate mechanism is locked on feeding casing by gyroaxis.In feed box rear end, be provided with oil cylinder and cylinder body.When cutting-tool angle need to be turned round, oil cylinder first compresses butterfly spring group, reduces the coupling mechanism force between gyroaxis and feeding casing, then cutter adjustable angle.After cutting-tool angle adjustment completes, oil cylinder is return, and butterfly spring group acts on accurate locking nut, and coupling mechanism force acts on pull bar, by locking again between gyroaxis and feeding casing.
A axle cutting-tool angle adjusting device is comprised of A axle servomotor, reductor, connecting shaft knot, worm gear pair; A axle servomotor drives worm gear pair by reductor and connecting shaft knot, drives the Y-axis supporting plate mechanism rotation of being fixed on gyroaxis, realizes cutting-tool angle adjustment.Turbine in worm gear pair is fixed on gyroaxis.
In the utility model, in milling machine body the place ahead, be provided with infrared ray tool setting device; After workpiece machines for the first time, do not dismantle workpiece, operator starts tool setting function on touch screen controller, infrared ray tool setting function on, C axle starts by the speed of setting, upper control system is calculated the width of workpiece Cao center, workpiece groove automatically, and stores corresponding data, and after completing, C axle stops the rotation; Then workpiece can be dismantled, when the workpiece of same model needs again clamping secondary operations, install workpiece, operator starts tool setting function on touch screen controller, infrared ray tool setting function on, C axle is the position location to correct workpiece groove center by the data automatic rotation of this model workpiece, then just can again cut.
In the utility model, at milling machine body middle part, be provided with automatic filings discharging device, add and by automatic filings discharging device, smear metal is discharged automatically man-hour; On milling machine body, be also provided with integral protection cover, protective cover moves direct-drive type workpiece spindle box, tool head and hobboing cutter and the encapsulation of hobboing cutter angular adjustment apparatus.Protective cover front is provided with the dodge gate that can move left and right.
Technical characterictic of the present utility model:
Described work spindle C, cutter spindle B, feed shaft X and walk cutter shaft Z and all adopt servomotor direct drive mode, the gear transmission part relevant to Workpiece Machining Accuracy and indexing accuracy all dispensed, therefore fundamentally got rid of in workpiece process, the generation of accumulated error and the error of division and accumulation problem are the essential measures that improves Workpiece Machining Accuracy; In spline machining field, the complete directly pattern of driving is an important innovations for spline milling machine, the optimize and improve of other parts or device all depends on most basic technological innovation, if the not essence optimization in type of drive, peripheral setting with the improvement of installing is all unavoidable can produce accumulated error and the error of division.
The utlity model has high efficiency: the main shaft of direct-drive type numerical control spline milling machine adopts high-precision bearing and without intermediate transmission link, make its spindle speed directly depend on the rotating speed of its direct driving motor, the direct driving motor speed adopting in the utility model reaches 3000rpm; High rotating speed can be brought the high speed performance of modern cutter into play incisively and vividly, thereby obtains very high production efficiency.Speedcore(speed is cut king) nano coating hobboing cutter cutting linear velocity can reach 350m/min, and carbide hob linear velocity can reach 300m/min, than conventional spline axle milling machine efficiency, significantly improves.
Described work spindle C, cutter spindle B, feed shaft X and walk cutter shaft Z and entirely directly drive zero transmission mode, the stability and the reappearance that cause processing technology and process, therefore can realize the processing that repeats of the secondary operations of workpiece and identical workpiece, guarantee the uniformity of the machining accuracy of batch workpiece.
Described work spindle C, cutter spindle B, feed shaft X and walk cutter shaft Z and entirely directly drive zero transmission mode, the processing vibration and vibration problem of transmission of having avoided mechanical gear transmission to cause, therefore the running of equipment complete machine can realize steadily processing operation under higher speed, thereby enhance productivity, save production cost.
Numerical control system, adopting 15 cun of very color touch-screens is operation interface, zero Programming, for using with operation, provide convenience, all six axis servomotors are pressed generation method hobbing by upper digital control system and are controlled, and by encoder and grating scale real time detection signal, and form closed loop control loop, and match with direct-drive type zero transmission mode, whole performance and the machining accuracy that improves spline milling machine.
Described work spindle C and cutter spindle B all select hollow servomotor, described workpiece spindle C selects hollow moment servomotor, all adopt axle sleeve dress and high precision position encoder or grating scale detection position signal, guarantee to drive real-time and the accuracy of feeding back with signals collecting.
The described cutter shaft Y that alters adopts reductor, the design of T-shaped screw mandrel; Described nose angle regulating shaft A adopts reductor, scroll bar and turbine design.
Described work spindle C, cutter spindle B, feed shaft X and walk cutter shaft Z direct-drive type zero driven Design and formed and between workpiece and cutter, do not have any mechanical transmission component, truly realized zero transmission, therefore just can make position coder detection signal realize and transmit in real time and feedback, could realize the closed-loop Data Control of control system.
Direct-drive type zero driven Design because the utility model adopts, has obtained stable processing characteristics, is provided with infrared tool setting device, thereby makes the secondary operations of workpiece become possibility.
Due to above-mentioned direct-drive type zero driven Design and structure optimization improvement, make the utlity model has the excellent surface quality of desirable indexing accuracy and workpiece.
The feature of direct-drive type zero transmission Full-numerical-control spline milling machine:
High-speed: the maximum speed of spindle of direct-drive type zero transmission Full-numerical-control spline milling machine reaches 3000rpm; Workbench maximum speed also can reach 300rpm.High rotating speed can be brought the high speed performance of modern cutter into play incisively and vividly, thereby obtains very high production efficiency.While using " Speedcore " and carbide hob, linear velocity can reach 300m/min, than conventional spline axle milling machine, raises the efficiency more than 10 times.
High accuracy: due to the electronic gearbox that divides tooth and differential motion to take closed-loop to control and adopt, a minute tooth precision can reach 4 grades or higher.In actual applications, machining accuracy is subject to the restriction of hobboing cutter and clamping workpiece precision, and machine tool accuracy is no longer the factor that affects machining accuracy.In production practices, under rational clamping and cooling condition, when high-speed cutting, can obtain 6 grades of stable machining accuracies.
Dryly cut processing: because zero transmission makes robust motion and the automatic moving cutter function of lathe, make direct-drive type spline milling machine become the most applicable lathe that high-speed dry is cut hobbing of spline shaft, the processing of axle tooth that carries out.The longer spline miller of pure machine driving or driving-chain is not suitable for high-speed dry and cuts hobbing processing, because the driving error of mechanical drive train causes the vibration in rolling cut process, and this vibration for high-speed dry cut, the hard crisp cutter material of quality is fatal impact, vibration causes the heel and toe wear of blade, and cutter has been lost profile accuracy soon.
Hard Gear shape process: direct-drive type numerical control spline milling machine can carry out secondary tool setting to the splined shaft that hardens, gear by infrared ray tool setting device, can use " Speedcore " and carbide hob to carry out the processing of secondary high-speed rolling-cutting to the spline that hardens, gear, hardness can reach HRC62.
Improve cutter life: use direct-drive type Full-numerical-control spline milling machine, because adopting the controllable cutter of evenly altering, the wear extent of the cutting edge of hobboing cutter is approached unanimously, make full use of each cutting edge of hobboing cutter, significantly improve cutter life.
Full-numerical-control zero programming operation: direct-drive type numerical control spline milling machine provides a parameterized operation interface for user, and user is according to workpiece situation input cutter parameters, workpiece parameter, technological parameter and feeding number of times, without any need for programming instruction.To operating personnel require low.
Tool Management System: evenly altering cutter is the important means that improves cutter life, reduces sharpening amount and sharpening number of times.Can arrange and alter cutter step pitch, alter cutter original position and final position, alter cutter number of times.When altering cutter number of times while reaching predetermined value, lathe is shut down, and prompting operation person checks cutter or changes cutter.
Collision prevention function: machine tool center adopts absolute coordinate to the position of workpiece centre, can prevent hobboing cutter that program error causes and the collision of workpiece.
Cutting Process storage: building database in system, can store the cutting parameter of 1000 workpiece for call later.
Secondary hobbing processing: can make hobboing cutter and spline, gear grooved align and make surplus even when secondary operations.
Pass through technique scheme, the beneficial effect of technical solutions of the utility model is: the utility model directly drives structure (zero transmission) in crucial axle B, C, X, the Z axis employing of spline milling machine, fundamentally eliminated accumulated error and error of division link, the machining accuracy of workpiece is improved; The utility model optimal design is significantly simplified frame for movement, thereby realizes the processing of splined shaft high efficiency; Owing to entirely directly driving and optimal design, make feedback element direct-detection hobboing cutter and workpiece spindle live signal, form closed-loop digital control system truly, make the utility model have desirable calibration machining accuracy; Owing to having adopted, directly drive zero drive technology, operation stability of the present utility model is improved greatly, thereby can implement high-speed cruising and dryly cut processing; The splined shaft product surface quality of processing is good; Because the utility model has adopted infrared tool setting technology, make the utility model to carry out secondary hobbing operation to workpiece, further improve precision and the quality of processing; The utility model can extend the service life of cutter; The utility model can also be processed hard flank of tooth material; Direct-drive type that the utility model provides zero transmission numerical control spline milling machine, can be used for high-accuracy high-efficiency rate to process straight splined shaft, the oblique splined shaft of low-angle, tapering splined shaft, spur gear, helical gear, bevel gear, drum gear, turbine, sprocket wheel, synchronous pulley etc.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed a kind of direct-drive type of the utility model embodiment zero transmission Full-numerical-control spline milling machine transmission system schematic diagram;
Fig. 2 is the disclosed a kind of direct-drive type of the utility model embodiment zero transmission Full-numerical-control spline milling machine structural diagrams intention;
Fig. 3 is the disclosed a kind of direct-drive type of the utility model embodiment zero transmission Full-numerical-control spline milling machine side view schematic diagram;
Fig. 4 is the disclosed a kind of direct-drive type of the utility model embodiment zero transmission Full-numerical-control spline milling machine top view schematic diagram;
Fig. 5 is the disclosed a kind of direct-drive type of the utility model embodiment zero transmission Full-numerical-control spline milling machine direction of principal axis schematic diagram.
Numeral and the represented corresponding component title of letter in figure:
1. milling machine body 2. workpiece spindle box 3. tool head 4.Y axis carriage mechanisms
5.X axle feed box 6.Z axis carriage mechanism 7. protective cover 8. tailstock casees
9. infrared tool setting device 11. automatic filings discharging device 12. touch screen controllers of nose angle regulating shaft A 10.
The hollow servomotor C of 13. work spindle C 14. center sleeve 15. workpiece driver plate 16.
17. connecting shaft knot C 18. cutter casing 19. cutter spindle B 20. knife bars
21. hollow servo motor B 22. connecting shaft knot B 23. pull bar B 24. encoders
25. knife bar bracket 26.Y axis carriage seat 27. nut seat Y 28.T type screw pairs
29. connecting shaft knot Y 30. decelerator Y 31. servomotor Y 32. feeding casings
33. pull bar Y 34. gyroaxis 35. worm gear pair 36. butterfly spring groups
37. accurate locking nut 38. oil cylinder 39. cylinder body 40.Z axle supporting plate seats
41. ball screw assembly, Z 42. connecting shaft knot Z 43. servomotor Z 44. nut seat Z
45. servomotor X 46. connecting shaft knot X 47. ball screw assembly, X 48. nut seat X
49. tailstock casing 50. tailstock centre 51. barrel of tail stock 52. cylinder components
53. servomotor A 54. reductor A 55. connecting shaft knot A
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
According to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model provides a kind of direct-drive type zero transmission Full-numerical-control spline milling machine, on milling machine body 1, be provided with the work spindle 13 wherein of direct-drive type workpiece spindle box 2(that drives workpiece rotation and be set to C axle), the direct-drive type tool head 3(of driving hobboing cutter rotation cutter spindle 19 is wherein set to B axle), drive tool head 3 to press processing request along the translating device of X, Y, Z axis direction translation, the nose angle regulating shaft 9(A axle that drives tool head 3 to turn along YZ plane internal rotation by processing request).X, Y, Z axis is vertical between two in space, and X-axis is along fore-and-aft direction setting, and Y-axis is along upper and lower to setting, and Z axis is along left and right directions setting.In milling machine body the place ahead, be also provided with infrared ray tool setting device 10, be convenient to the workpiece secondary operations after clamping again.
The guide rail of milling machine body 1 holding workpieces main spindle box 2 and removable tailstock case 8 adopts slant rail, becomes angle with horizontal plane, makes force structure be better than level gauge, and is conducive to the chip discharge of generation in hobbing processing.The guide rail of milling machine body 1 supporting hobboing cutter translation and setting angle adjusting device adopts heavy side's rail and quenches, and makes that its intensity is high, wearability good.
Hobboing cutter translation and nose angle regulating shaft 9 comprise can along the Z axis supporting plate mechanism 6 of Z-direction translation, can along the X-axis feed box 5 of X-direction translation, can be along the Y-axis dragging plate mechanism 4 of Y-axis translation.And drive tool head 3 at the nose angle regulating shaft 9 of YZ rotation with in surface.Z axis supporting plate mechanism 6 is arranged on milling machine body 1 by rail plate pair, and X-axis feed box 5 is arranged on Z axis supporting plate mechanism 6 by rail plate pair, and Y-axis dragging plate mechanism 4 is arranged on X-axis feed box 5 front ends, and A axle is arranged on X-axis feed box 5 upper left quarters by worm gear pair 35.
Direct-drive type workpiece spindle box 2 is arranged on the left end of milling machine body 1, and work spindle 13 is set to C axle (rotating shaft), and by torque type, hollow servomotor C16 ties the direct Driven by Coaxial of C17 by connecting shaft.Work spindle C13 is hollow shaft, and its right-hand member is provided with center sleeve 14, drives workpiece driver plate 15.
The rotating speed of direct-drive type work spindle C13 is followed according to generating process principle according to the rotating speed of direct-drive type cutter spindle B19 automatically by upper control system.The coaxial high-precision encoder that the actual circumferential position of work spindle C13 is carried by the hollow servomotor C16 of torque type is determined.
Direct-drive type tool head 3 comprises cutter spindle casing 18, cutter spindle B19, knife bar 20, hollow servo motor B 21, connecting shaft knot B22, knife bar pull bar B23, high-precision encoder 24 and knife bar bracket 25.Cutter spindle B19 is set to B axle (rotating shaft), ties B22 directly drive by hollow servo motor B 21 by connecting shaft.The actual circumferential position of cutter spindle B19 is determined by coaxial high-precision encoder 24.Knife bar 20 is strained by pull bar B23, and the hobboing cutter of the different size of same apertures can be installed on knife bar 20, when the not identical hobboing cutter in aperture is installed, need change corresponding knife bar, at knife bar tail end, is provided with knife bar bracket 25.
The right-hand member of milling machine body 1 is provided with removable tailstock case 8, and tailstock case 8 can move by sliding surface on milling machine body 1.Tailstock case 8 is provided with tailstock centre 50, and tailstock centre 50 is coaxially oppositely arranged with direct-drive type work spindle C13, by barrel of tail stock 51, by cylinder component 52, is driven and can be moved along its axial stretching, holds out against or unclamp the centre of gyration of workpiece to be processed.Between tailstock casing 49 left ends and barrel of tail stock 51, be provided with 4 locking oil cylinders of stopping, eliminate the gap between barrel of tail stock 51 and tailstock casing 49.
Z axis dragging plate mechanism 6 comprises Z axis supporting plate seat 40, Z axis servomotor Z43, Z axis ball screw assembly, Z41.Z axis servomotor Z43 ties Z42 by connecting shaft and directly drives Z axis ball screw assembly, Z41, by the screw Connection Block Z44 on ball screw assembly, Z41, drives cutter long feed.Z axis dragging plate mechanism 6 is by plastic-sticking guiding rail setting and milling machine body 1.
X-axis feed mechanism is arranged on Z axis dragging plate mechanism 6 by plastic-sticking guiding rail.Comprise X-axis feed box 5, X-axis servomotor X45, X-axis ball screw assembly, 47.X-axis servomotor 45 is tied 46 by connecting shaft and is directly driven X-axis ball screw assembly, 47, and X-axis screw Connection Block X48 is fixed on Z axis supporting plate seat 40, and X-axis ball-screw 47 is arranged on X-axis feed box; Rotary actuation feed box by ball-screw 47 moves forward and backward to realize cutter radial feed.
Y-axis supporting plate mechanism 4 comprises Y-axis planker seat 26, Y-axis servomotor Y31, decelerator Y30, connecting shaft knot Y29, T-shaped lead screw pair 28, nut seat Y27.Y-axis servomotor Y31 connection reducer Y30, then connect connecting shaft knot Y29, then drive T-shaped lead screw pair 28, by the nut seat Y27 being fixed in T-shaped lead screw pair 28, drive direct-drive type tool head 3 to move along Y-direction, realize cutter and alter cutter function.Y-axis supporting plate mechanism 4 is fixed on gyroaxis 34.Y-axis supporting plate mechanism 4, by pull bar Y33, gyroaxis 34, is arranged on X-axis feed box 5.By butterfly spring group 36, accurate locking nut 37, coupling mechanism force acts on pull bar Y33, and Y-axis supporting plate mechanism 4 is locked on feeding casing 32 by gyroaxis 34.In feeding casing 32 rear ends, be provided with oil cylinder 38, cylinder body 39.When cutting-tool angle need to be turned round, oil cylinder 38 first compresses butterfly spring group 36, reduces the coupling mechanism force between gyroaxis 34 and feeding casing 32, then cutter adjustable angle.After cutting-tool angle adjustment completes, oil cylinder 38 is return, and butterfly spring group 36 acts on accurate locking nut 37, and coupling mechanism force acts on pull bar 33, by locking again between gyroaxis 34 and feeding casing 32.
A axle nose angle regulating shaft 9 is comprised of A axle servomotor A53, reductor A54, connecting shaft knot A55, worm gear pair 35.The servo electric A53 of A axle drives worm gear pair 35 by reductor A54 and connecting shaft knot A55, drives Y-axis supporting plate mechanism 4 rotations of being fixed on gyroaxis 34, realizes cutting-tool angle adjustment.Turbine in worm gear pair 35 fixing with gyroaxis 34 on.
In the utility model, in milling machine body 1 the place ahead, be provided with infrared ray tool setting device 10.After workpiece machines for the first time, do not dismantle workpiece, operator starts tool setting function on touch-screen 12, infrared ray tool setting function on, C axle starts by the speed of setting, upper control system is calculated the width of workpiece Cao center, workpiece groove automatically, and stores corresponding data, and after completing, C axle stops the rotation.Then workpiece can be dismantled.When the workpiece of same model needs again clamping secondary operations, install workpiece, operator starts tool setting function on touch-screen 12, infrared ray tool setting function on, C axle is the position location to correct workpiece groove center by the data automatic rotation of this model workpiece, then just can again cut.
In the utility model, at milling machine body 1 middle part, be provided with automatic filings discharging device 11, add and by automatic filings discharging device 11, smear metal is discharged automatically man-hour.On milling machine body 1, be also provided with integral protection cover 7, protective cover 7 is by direct-drive type workpiece spindle box 2, tool head 3 and hobboing cutter moves and the encapsulation of hobboing cutter angular adjustment apparatus.Protective cover 7 fronts are provided with the dodge gate that can move left and right.
The utility model directly drives structure (zero transmission) in crucial axle B, C, X, the Z axis employing of spline milling machine, has fundamentally eliminated accumulated error and error of division link, and the machining accuracy of workpiece is improved; The utility model optimal design is significantly simplified frame for movement, thereby realizes the processing of splined shaft high efficiency; Owing to entirely directly driving and optimal design, make feedback element direct-detection hobboing cutter and workpiece spindle live signal, form closed-loop digital control system truly, make the utility model have desirable calibration machining accuracy; Owing to having adopted, directly drive zero drive technology, operation stability of the present utility model is improved greatly, thereby can implement high-speed cruising and dryly cut processing; The splined shaft product surface quality of processing is good; Because the utility model has adopted infrared tool setting technology, make the utility model to carry out secondary hobbing operation to workpiece, further improve precision and the quality of processing; The utility model can extend the service life of cutter; The utility model can also be processed hard flank of tooth material; Direct-drive type that the utility model provides zero transmission numerical control spline milling machine, can be used for high-accuracy high-efficiency rate to process straight splined shaft, the oblique splined shaft of low-angle, tapering splined shaft, spur gear, helical gear, bevel gear, drum gear, turbine, sprocket wheel, synchronous pulley etc.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a direct-drive type zero transmission Full-numerical-control spline milling machine, is characterized in that, comprises that transmission system, digital control system, tectonic system and corollary apparatus form; Described transmission system is by 6 axis servomotors: nose angle regulating shaft A, cutter spindle B, work spindle C, feed shaft X, alter cutter shaft Y and walk cutter shaft Z and form; Described 6 axis servomotors are undertaken numerical control operated by upper digital control system by generation method hobbing principle; On milling machine body, be provided with the direct-drive type workpiece spindle box that drives workpiece rotation, in described workpiece spindle box, be provided with work spindle; On described milling machine body, be provided with the direct-drive type tool head that drives hobboing cutter rotation, described tool head is provided with cutter spindle; On described milling machine body, be provided with along the translating device of X, Y, Z axis direction translation the nose angle adjusting device that drives tool head to turn along YZ plane internal rotation, i.e. A axle; Described X, Y, Z axis is vertical between two in space, and X-axis is along fore-and-aft direction setting, and Y-axis is along upper and lower to setting, and Z axis is along left and right directions setting; In milling machine body the place ahead, be also provided with infrared ray tool setting device, be convenient to the workpiece secondary operations after clamping again; Described direct-drive type workpiece spindle box is arranged on the left end of milling machine body, and the right-hand member of milling machine body is provided with removable tailstock case, and tailstock case can move by sliding surface on milling machine body.
2. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, is characterized in that, described cutter spindle B, work spindle C, feed shaft X and walk cutter shaft Z and all adopt direct-drive type zero driven Design; Cutter spindle B adopts hollow servomotor to be directly sleeved on work spindle, and main shaft tail is coaxially installed a position coder feedback main spindle's; It is upper that work spindle C adopts the hollow torque motor of high pulling torque (DDR) to be directly sleeved on work spindle C, that by motor, had by oneself and the position direct-connected high precision position encoder feedback work spindle C of rotor.
3. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, is characterized in that, described feed shaft X-direction is provided with grating scale and detects X-axis feed box physical location; The described cutter shaft Z-direction of walking is provided with grating scale detection Z axis feed box physical location.
4. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, it is characterized in that, described milling machine body the place ahead is provided with infrared ray tool setting device, realizes the processing that repeats of the secondary operations of workpiece and identical workpiece, has guaranteed the uniformity of the machining accuracy of batch workpiece.
5. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, is characterized in that, described digital control system, and adopting 15 cun of very color touch-screens is operation interface.
6. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, is characterized in that, described cutter spindle B maximum speed reaches 3000rpm; Work spindle C maximum speed also can reach 300rpm.
7. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, it is characterized in that, described digital control system is by encoder or grating scale real time detection signal, and form full-closed loop type control loop, and match with direct-drive type zero transmission mode, make of the present utility model minute tooth and differential precision can reach 4 grades--the machining accuracy of 6 grades.
8. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, it is characterized in that, described digital control system is zero programming operation, there is parameterized operation interface, can be according to workpiece situation input cutter parameters, workpiece parameter, technological parameter and feeding number of times, without any need for programming instruction.
9. a kind of direct-drive type according to claim 1 zero transmission Full-numerical-control spline milling machine, it is characterized in that, described digital control system has collision prevention function, described cutter spindle B center adopts absolute coordinate to the center of work spindle C, can prevent hobboing cutter that program error causes and the collision of workpiece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420036982.5U CN203711951U (en) | 2014-01-21 | 2014-01-21 | Direct-driving type zero-transmission full numerical control spline shaft milling machine |
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| CN201420036982.5U CN203711951U (en) | 2014-01-21 | 2014-01-21 | Direct-driving type zero-transmission full numerical control spline shaft milling machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785830A (en) * | 2014-01-21 | 2015-07-22 | 张家港乙腾机械有限公司 | Direct-driven zero-drive complete-numerical-control spline shaft milling machine |
| CN108213469A (en) * | 2018-02-11 | 2018-06-29 | 上海玺欧机电科技有限公司 | A kind of automobile axle shaft spline digital control processing and automation equipment |
-
2014
- 2014-01-21 CN CN201420036982.5U patent/CN203711951U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785830A (en) * | 2014-01-21 | 2015-07-22 | 张家港乙腾机械有限公司 | Direct-driven zero-drive complete-numerical-control spline shaft milling machine |
| CN108213469A (en) * | 2018-02-11 | 2018-06-29 | 上海玺欧机电科技有限公司 | A kind of automobile axle shaft spline digital control processing and automation equipment |
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