CN104827134A - Horizontal CNC gear hobbing machine - Google Patents
Horizontal CNC gear hobbing machine Download PDFInfo
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- CN104827134A CN104827134A CN201510304137.0A CN201510304137A CN104827134A CN 104827134 A CN104827134 A CN 104827134A CN 201510304137 A CN201510304137 A CN 201510304137A CN 104827134 A CN104827134 A CN 104827134A
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- 238000003825 pressing Methods 0.000 claims description 23
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The invention discloses a horizontal CNC gear hobbing machine which comprises a lathe bed, a spindle box, a workpiece holder, a tailstock, a hob rest, a hob, a workbench, a cross beam and an oblique support. The spindle box is mounted on the lathe bed, the spindle box comprises a workpiece spindle, and the workpiece holder is mounted on the workpiece spindle. The hob rest is mounted on the workbench, the workbench is mounted on the lathe bed, and the hob is mounted on the hob rest. One end of the cross beam is mounted on the top of the spindle box, the other end of the cross beam is mounted on the oblique support, and the oblique support is mounted on the lathe bed. The tailstock is inversely hung on a trapezoidal guide rail of the cross beam. According to the technical scheme, the tailstock breaks the routine to be mounted on the cross beam and is in a suspension mode, the tailstock and the hob rest are arranged up and down, and a condition is created for guaranteeing wide-range adjustment of the hob rest which is horizontally arranged below; besides, the horizontal mode of a main machine body of the gear hobbing machine is arrayed into a gantry mode, due to the up-down arrangement of the hob rest and the tailstock, the occupied space of a machine tool is saved, and thus the machine tool structure can be simplified easily.
Description
Technical field:
The present invention relates to gear-hobbing machine equipment, in particular to a kind of horizontal digital-control gear-hobbing machine.
Background technology:
Generally known, the tailstock of lathe is slidably mounted on the tail end of workbench, and its tailstock center heads in the centre hole on workpiece end face with stable workpiece, especially axial workpiece.Gear-hobbing machine is as a classification of lathe, and it is when machining worm, gear axial workpiece, usually also adopts the tailstock of workbench tail end to stablize the workpiece fixed by fixture.
Summary of the invention:
Technical problem solved by the invention: gear-hobbing machine is in the process of machining worm, gear axial workpiece, and hobboing cutter and workpiece are set up in parallel, and hobboing cutter is arranged on knife rest, driven by tool spindle and rotate, workpiece is fixed by fixture and tailstock; Because tailstock of the prior art is arranged on the tail end of workbench, be gesture arranged side by side with knife rest, so, knife rest and tailstock are mutually crowded, make troubles to operating personnel's action knife rest or tailstock, especially when operating personnel's cutter setting frame or tailstock carry out maintenance and dismounting; In addition, the knife rest in gesture arranged side by side and tailstock occupy lathe compared with space, be unfavorable for simplifying of machine tool structure.
The invention provides following technical scheme:
A kind of horizontal digital-control gear-hobbing machine, comprising: lathe bed, main spindle box, work piece holder, tailstock, knife rest, hobboing cutter, workbench, crossbeam, tilted supporter;
Described main spindle box is arranged on lathe bed, and main spindle box comprises work spindle, and described work piece holder is arranged on work spindle, and described knife rest is installed on the table, and workbench is arranged on lathe bed, and described hobboing cutter is arranged on knife rest; One end of described crossbeam is arranged on the top of main spindle box, and the other end of crossbeam is arranged on tilted supporter, and tilted supporter is arranged on lathe bed;
Described tailstock comprises top, tailstock body, trapezoidal rails, the 4th ball wire bar pair, servomotor; Describedly toply be arranged on tailstock body, described tailstock body is hung by the feet in trapezoidal rails, described trapezoidal rails is fixed on crossbeam, the nut of described 4th ball wire bar pair is fixed on tailstock body, the screw mandrel of described 4th ball wire bar pair connects servomotor, described servomotor is arranged on tilted supporter, and servomotor drives tailstock body horizontal linear in trapezoidal rails to slide by the 4th ball wire bar pair; Described tailstock is positioned at the top of knife rest.
By technique scheme, tailstock of the present invention is broken the normal procedure and is arranged on crossbeam, in floated, is upper and lower gesture with knife rest, for ensureing that interior adjustment creates condition to the hob head of horizontal setting below on a large scale; Reliably realize knife rest-45 ° /+135 ° revolutions, meet the processing of gear, worm gear particularly worm screw.In addition, the horizontal layout of gear-hobbing machine main frame of the present invention becomes planer-type, and knife rest and the setting up and down of tailstock have saved the space taking lathe, are conducive to simplifying of machine tool structure.
Illustrate the one of workbench as the present invention, described workbench comprises work abutment body, workbench main shaft, tool axis, line slideway, the first nut bracket, the first ball screw; Described first ball screw and line slideway are arranged on lathe bed, and the first nut bracket coordinates with the first ball screw and drives workbench on line slideway, to make level to moving back and forth back and forth; Described work abutment body is in T shape, and T-shaped work abutment body comprises left wing, right wing part and vertical portion; Described first nut bracket is arranged in left wing, and described left wing and right wing part make level to moving back and forth back and forth on line slideway; Described vertical portion offer run through work abutment body up and down move up and down passage, described workbench main shaft activity is plugged in and moves up and down in passage; Described workbench main shaft hollow, described tool axis is articulated in workbench main shaft; The lateral wall of described vertical portion is provided with lifting drive, and lifting drive comprises the second ball wire bar pair, and the second ball wire bar pair drives workbench main shaft to move up and down moving up and down in passage; The lateral wall of described vertical portion is offered installation through hole, the sidewall of described workbench main shaft is offered and slides through hole, the lateral wall of vertical portion is provided with rotating driving device, rotating driving device comprises bevel gear mechanism, and bevel gear mechanism drives the tool axis in workbench main shaft to rotate through installing through hole and sliding through hole; Described knife rest is articulated on workbench main shaft, and described knife rest is fixedly connected with tool axis.
As described above, the first ball wire bar pair is by driving workbench horizontal linear on line slideway to run with coordinating of the first nut bracket; The second ball wire bar pair in lifting drive drives workbench main shaft to move up and down moving up and down in passage of abutment body of work, and workbench main shaft drives pivot joint knife rest thereon to move up and down; Rotating driving device passes through bevel gear mechanism by power transmission to tool axis, and tool axis is rotated, and tool axis drives knife rest to rotate in the horizontal plane.Because work abutment body is in T shape, the sidewall that above-mentioned lifting drive and rotating driving device are arranged on T-shaped work abutment body vertical portion is positioned at the below of left wing and right wing part, so, whole workbench structure under function completely prerequisite is made to become compact and simple.
Based on the above-mentioned explanation to workbench, as the present invention's further illustrating workbench, the madial wall of described vertical portion is provided with guiding mechanism, and described guiding mechanism comprises the first little axle and the second little axle, the first roller and the second roller; Described first little axle and the second little axle are laterally fixed on the madial wall of vertical portion, and the first little axle and the second little axle are fixed on the madial wall of vertical portion in mode arranged side by side up and down; Described first roller housing is located on the first little axle, and described second roller housing is located on the second little axle; The lateral wall of described workbench main shaft is offered about one straight trough moved towards, described first roller and the second roller are engaged in the straight trough of workbench main shaft, the left and right sides of described first roller contacts with the left and right sides wall of straight trough, and the left and right sides of described second roller contacts with the left and right sides wall of straight trough; Described first little axle and on the first roller, described second little axle and on the second roller can workbench main shaft relative to work abutment body move up and down time move up and down relative to straight trough.
Above-mentioned first little axle offers the first axially extending bore, and the front end of the first axially extending bore is provided with the first constricted arc edge; First ball is installed in the first axially extending bore, the first coil tension spring and the first bolt is provided with in first axially extending bore, first bolt is screwed onto in the first axially extending bore, and one end of the first coil tension spring is against on the first bolt, and the other end of the first coil tension spring is against on the first ball; First coil tension spring is by the first ball top to the first constricted arc edge, and the first ball and the first constricted arc edge are offseted, and the first ball part gives prominence to the top end face of the first little axle.
Above-mentioned first axially extending bore is stepped throughhole, and the first axially extending bore comprises first footpath section and the first path section, and the first path section is positioned at the front of first footpath section, and the tail end of the first path section is provided with internal thread, and the tail end of first footpath section is provided with internal thread; Described first bolt is stud bolt, and the first bolt is screwed onto the tail end of the first path section; The tail end of described first footpath section is bolted with the first breaker bolt, and the first breaker bolt is the stud bolt of hollow;
Above-mentioned second little axle offers the second axially extending bore, and the front end of the second axially extending bore is provided with the second constricted arc edge; In described second axially extending bore, the second ball is installed, the second coil tension spring and the second bolt is provided with in second axially extending bore, second bolt is screwed onto in the second axially extending bore, and one end of the second coil tension spring is against on the second bolt, and the other end of the second coil tension spring is against on the second ball; Second coil tension spring is by the second ball top to the second constricted arc edge, and the second ball and the second constricted arc edge are offseted, and the second ball part gives prominence to the top end face of the second little axle.
Above-mentioned second axially extending bore is stepped throughhole, and the second axially extending bore comprises second largest footpath section and the second path section, and the second path section is positioned at the front of second largest footpath section, and the tail end of the second path section is provided with internal thread, and the tail end of second largest footpath section is provided with internal thread; Described second bolt is stud bolt, and the second bolt is screwed onto the tail end of the second path section; The tail end of described second largest footpath section is bolted with the second breaker bolt, and the second breaker bolt is the stud bolt of hollow.
As described above, when workbench main shaft does upper and lower displacement relative to work abutment body, namely workbench main shaft work abutment body move up and down move up and down in passage time, first little axle and on parts and the second little axle and on parts can move up and down (certainly relative to straight trough, this is a kind of relative motion, and essence is straight trough along with workbench main shaft moves up and down).Because the left and right sides of the first roller contacts with the left and right sides wall of straight trough, the left and right sides of the second roller contacts with the left and right sides wall of straight trough (external diameter being equivalent to the first roller and the second roller equals the left and right width of straight trough), and, first ball all contacts with the bottom surface of straight trough with the second ball, namely the first ball and the second ball are against on the bottom surface of straight trough, so, can prevent workbench main shaft from when moving up and down, microdisplacement deviation occurring.So, when guiding mechanism of the present invention can make workbench main shaft move up and down relative to workbench body, accomplish vertical not deflection, and then improve the machining accuracy of product.
Separately it should be noted that, first ball is against on the first constricted arc edge under the elastic force of the first coil tension spring, when staff need dismantle the first ball or the first coil tension spring, under the elastic force that the first coil tension spring is powerful, be against first bolt of first coil tension spring one end when the internal thread of disengaging first path section tail end, can the first axially extending bore be launched out; The effect that the present invention designs the first breaker bolt is just the first bolt launched to be limited in the first axially extending bore, particularly, is limited in the first footpath section of the first axially extending bore.The effect of described second breaker bolt also in this way.
Illustrate the one of main spindle box as the present invention, described main spindle box comprises main spindle box body, high speed angling cylinder; Described main spindle box body is arranged on lathe bed, and described indexing spindle is articulated in main spindle box body, and main spindle box body is given prominence in the front-end and back-end of indexing spindle, and front-end and back-end and the main spindle box body of the indexing spindle of outstanding main spindle box body are tightly connected; Described work piece holder is arranged on the front end of indexing spindle, and described high speed angling cylinder is arranged on the rear end of indexing spindle, and described indexing spindle hollow, is inserted with pull bar in the indexing spindle of hollow, and pull bar connects high speed angling cylinder and work piece holder.Be provided with synchronous motor in described main spindle box body, the rotor of described synchronous motor is fixed on indexing spindle, and the stator of described synchronous motor is arranged on electric machine support, and described electric machine support is fixed in main spindle box body.
As described above, the rotor of synchronous motor of the present invention is directly fixed on indexing spindle, so, motor of the present invention saves land power transmission to indexing spindle without adapter ring, achieve the Zero-drive Chain of power transmission, avoid driving error, be conducive to the raising of machining accuracy.As the present invention's further illustrating main spindle box, the operation principle of described work piece holder is: described high speed angling cylinder pulls work piece holder by pull bar, makes work piece holder clamp or loosen workpiece.
Based on the above-mentioned explanation to main spindle box, as the present invention's further illustrating main spindle box, in described main spindle box body, offer main shaft chamber; Along the axis of indexing spindle, in described main shaft chamber, be provided with radial flange; Main shaft chamber is divided into front chamber and rear chamber by described radial flange, described radial flange is fixed with main shaft rear flange, and described indexing spindle is arranged on main shaft rear flange by rear taper roll bearing; The front end of described main spindle box body is fixed with main shaft forward flange, and described indexing spindle is arranged on main shaft forward flange by front cone roller bearing; Described synchronous motor is positioned at rear chamber.
As described above, be ensure the high installation accuracy of indexing spindle, the present invention breaks the normal procedure, on main spindle box body two main dead eyes not on casing direct boring hit.Because no matter adopt which kind of process means, directly on main spindle box body, boring is hit diaxon bearing bore and is always had error.The present invention is by the boring of diaxon bearing bore difference on main shaft forward flange and main shaft rear flange, then by mounting and adjusting, guarantees that the concentricity of diaxon bearing bore reaches optimum value.So, the rotating accuracy that not only strong guarantee indexing spindle is extra-high, and, also make indexing spindle support stiffness reach very high.
One as cutter setting frame of the present invention illustrates, described knife rest comprises tool-post structure part, tool spindle part, knife rest alter cutter part, knife rest tailstock portion.Described tool spindle part comprises sliding carriage, the tool spindle case be arranged on sliding carriage, tool spindle, the knife bar be articulated in tool spindle case.Sliding carriage is slidably fitted in the top plane of tool-post structure part, and sliding carriage can move along the top plane of tool-post structure part as horizontal linear; Described hobboing cutter is arranged on knife bar, and knife bar and tool spindle are horizontally disposed with, and the front end of knife bar is arranged on tool spindle.
Above-mentioned knife rest alters cutter partial fixing on sliding carriage, and knife rest is altered cutter part and is articulated with the 3rd screw mandrel, and the 3rd screw mandrel is horizontally disposed with, and the 3rd screw mandrel is combined with the 3rd nut, and described 3rd nut is fixed in tool-post structure part.
Above-mentioned knife rest tailstock portion is slidably fitted on sliding carriage, and knife rest tailstock portion props up the tail end of knife bar.
Be provided with torque motor in above-mentioned tool spindle case, the rotor of described torque motor is fixed on tool spindle, and the stator of described torque motor is arranged on the madial wall of tool spindle case.
By the explanation of above-mentioned cutter setting frame, the operation principle of knife rest is: torque motor drives tool spindle to rotate, and tool spindle drives knife bar to rotate, and knife bar drives the hobboing cutter be arranged on knife bar to rotate with processing work; 3rd screw mandrel can drive tool spindle part to move relative to tool-post structure part of horizontal with the cooperation of the 3rd nut, and then the hobboing cutter on knife bar is moved horizontally, and to make full use of each tooth of hobboing cutter, saves hobboing cutter cost; Knife rest tailstock portion props up the tail end of knife bar, make knife bar and on hobboing cutter operate steadily.Wherein, described torque motor saves land by power transmission to tool spindle without adapter ring, achieves the Zero-drive Chain of power transmission, avoids driving error, is conducive to the rotating accuracy improving tool spindle.
Based on the explanation of above-mentioned cutter setting frame, as further illustrating of cutter setting frame of the present invention, the front end of described knife bar is arranged on tool spindle by the first coning sleeve; Described first coning sleeve centre offers bellmouth, and the first coning sleeve is arranged on the front end face of tool spindle, and the front end of knife bar is arranged in the bellmouth of the first coning sleeve.Hobbing knife rest of the prior art is opened in tool spindle top by installing the bellmouth of knife bar, and its machining accuracy difficulty greatly and not easily ensure; Bellmouth and tool spindle separate by the present invention, and described bellmouth is opened on the first coning sleeve, and so, not only precision improves greatly, and processing technology simplifies greatly.Wherein, described bellmouth is 7:24 bellmouth.
As the one explanation of the present invention to tailstock, the end face of described tailstock body of hanging by the feet offers the ladder chute coordinated with trapezoidal rails, the end face of described tailstock body of hanging by the feet is fixed with left pressing plate and right pressing plate, described left pressing plate and right pressing plate are positioned at the both sides of ladder chute and ladder chute forms a pair back-off angle, described tailstock body is hung by the feet in trapezoidal rails by a pair back-off angle, wherein, the top plane of trapezoidal rails is close in the baseplane of described left pressing plate and right pressing plate; Be provided with multiple locking cylinder in described left pressing plate, under the effect of oil pressure, the piston of described locking cylinder can be pressed in the top plane of trapezoidal rails tightly.
As described above, when the descent of piston of the locking cylinder in left pressing plate is pressed in the top plane of trapezoidal rails, the relative sliding between tailstock body and trapezoidal rails is locked, and tailstock body is rigidly connected and fixes and transfixion; Once the locking cylinder release in left pressing plate, tailstock body could move along trapezoidal rails under the driving of drive unit.
Based on above-mentioned explanation, as the present invention's further illustrating tailstock, described tailstock body comprises slide plate, slide, dead head, fixed block, oil cylinder fishplate bar, oil cylinder seat, oil cylinder, the nut of described 4th ball wire bar pair is fixed on slide plate, described slide is arranged on the first half of slide plate bottom surface by threaded fastener, described dead head is arranged on the first half of slide bottom surface by threaded fastener, describedly toply be fixed on dead head, described fixed block is arranged on the latter half of of slide bottom surface by threaded fastener, described oil cylinder fishplate bar is arranged on the latter half of of slide plate bottom surface, described oil cylinder seat is fixed on the bottom surface of oil cylinder fishplate bar, described oil cylinder is fixed on oil cylinder seat, the piston top of oil cylinder is on fixed block, the center line of the piston of oil cylinder overlaps with top center line.
In above-mentioned tailstock body, described oil cylinder comprises oil cylinder front cover, coil tension spring, oil cylinder bonnet; The rear end of described coil tension spring is fixed on oil cylinder bonnet, and the front end of coil tension spring is against on piston.
In above-mentioned tailstock body, the latter half of of described slide plate bottom surface offers the second chute, and the top of described oil cylinder fishplate bar is engaged in the second chute, and draw-in groove is offered in the two side of oil cylinder fishplate bar, be connected with press strip in draw-in groove, press strip is fixed on the latter half of of slide plate bottom surface by threaded fastener; Described second chute comprises cross section triangle chute triangular in shape and cross section is trapezoidal ladder chute, and the end face of described oil cylinder fishplate bar is provided with the triangle protuberance coordinated with triangle chute and the trapezoidal protuberance coordinated with ladder chute; Between the bottom surface of the ladder chute be combined together and the end face of trapezoidal protuberance, there is certain gap.
As described above, the cooperation of servomotor and the 4th ball wire bar pair drives slide plate horizontal linear in trapezoidal rails to move, slide plate drives slide horizontal linear to move, and slide drives dead head horizontal linear to move, and to drive on it top heads in workpiece centre hole for dead head; Under the driving of servomotor, the top axial force with some strength in workpiece centre hole.Described slide, dead head, fixed block three are fixedly rigidly connected into a reverse U shape structure, the piston top of oil cylinder is on a side of described reverse U shape structure, design like this, the characteristic of micro-elastic deformation can be there is by reverse U shape structure dual-side, be not exclusively rigid contact during to ensure the top top tight workpiece on dead head, but there is certain micro-Elastic Contact.In high-speed cutting, above-mentioned have certain micro-Elastic Contact and have good booster action, greatly can improve the precision of machine tool processing workpiece.Wherein, staff can arrange certain pretightning force to the coil tension spring after oil cylinder piston, and piston is withstood on fixed block constantly.Arranging of above-mentioned coil tension spring pretightning force is as follows: staff loosens the threaded fastener of connection trim strip and slide plate, and oil cylinder fishplate bar can move along the second chute, so, and the pretightning force of adjustable retractable spring.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the general structure schematic diagram of a kind of horizontal digital-control gear-hobbing machine of the present invention;
Fig. 2 is the structural representation of workbench 70 in Fig. 1;
Fig. 3 is the structural representation of rotating driving device 77 in 2;
Fig. 4 is the structural representation of the guider 78 between workbench main shaft 72 of the present invention and work abutment body 71;
Fig. 5 is the structural representation of the first little axle 781 (comprising the first ball 787) in Fig. 4;
Fig. 6 is the sectional view of the first little axle 781 of the present invention;
Fig. 7 is the combining structure schematic diagram of the first bolt 789, first coil tension spring 788, first ball 787 in the first little axle 781 of the present invention;
Fig. 8 is the structural representation of the first breaker bolt 785c in the first little axle 781 of the present invention.
Fig. 9 is the combining structure schematic diagram of main spindle box 20 and work piece holder 30 in Fig. 1;
Figure 10 is the structural representation of main spindle box 20 in Fig. 9;
Figure 11 is the structural representation of Fig. 1 intermediate slide 50;
Figure 12 is the structural representation of Figure 11 intermediate slide main shaft portion 52;
Figure 13 is the structural representation that cutter part 53 altered by Figure 11 intermediate slide;
Figure 14 is the structural representation of tailstock 40 in Fig. 1;
Figure 15 is B place enlarged drawing in Figure 14;
Figure 16 is A-A sectional view in Figure 14.
Detailed description of the invention:
As Fig. 1, a kind of horizontal digital-control gear-hobbing machine, comprising: lathe bed 10, main spindle box 20, work piece holder 30, tailstock 40, knife rest 50, hobboing cutter 60, workbench 70, crossbeam 80, tilted supporter 90.
As Fig. 1, described main spindle box is arranged on lathe bed, and main spindle box comprises indexing spindle 21, and described work piece holder is arranged on indexing spindle, and described knife rest is installed on the table, and workbench is arranged on lathe bed, and described hobboing cutter is arranged on knife rest; One end of described crossbeam is arranged on the top of main spindle box, and the other end of crossbeam is arranged on tilted supporter, and tilted supporter is arranged on lathe bed.
As Fig. 2, described workbench 70 comprises work abutment body 71, workbench main shaft 72, tool axis 73, line slideway 74, first nut bracket 75, first ball screw.
In above-mentioned workbench 70, as Fig. 2, described first ball screw and line slideway are arranged on lathe bed 10, and the first nut bracket coordinates with the first ball screw and drives workbench on line slideway, to make level to moving back and forth back and forth.Described work abutment body is in T shape, and T-shaped work abutment body comprises left wing 711, right wing part 712 and vertical portion 713; Described first nut bracket is arranged in left wing, and described left wing and right wing part make level to moving back and forth back and forth on line slideway; Described vertical portion offer run through work abutment body up and down move up and down passage, described workbench main shaft activity is plugged in and moves up and down in passage.Described workbench main shaft hollow, described tool axis is articulated in workbench main shaft.Described knife rest 50 is articulated on workbench main shaft, and described knife rest is fixedly connected with tool axis.
In above-mentioned workbench 70, as Fig. 2, the lateral wall of described vertical portion is provided with lifting drive 76, lifting drive comprises the second ball wire bar pair 761, second ball wire bar pair and drives workbench main shaft to move up and down moving up and down in passage.The lateral wall of described vertical portion is offered installation through hole, the sidewall of described workbench main shaft is offered and slides through hole 730, the lateral wall of vertical portion is provided with rotating driving device 77, as Fig. 3, rotating driving device comprises bevel gear mechanism 771, and bevel gear mechanism drives the tool axis in workbench main shaft to rotate through installing through hole and sliding through hole.
In above-mentioned workbench 70, as Fig. 4, the madial wall of described vertical portion 713 is provided with guiding mechanism 78, and described guiding mechanism comprises the first little axle 781 and the second little axle 782, first roller 783 and the second roller 784; Described first little axle and the second little axle are laterally fixed on the madial wall of vertical portion, and the first little axle and the second little axle are fixed on the madial wall of vertical portion in mode arranged side by side up and down; Described first roller housing is located on the first little axle, and described second roller housing is located on the second little axle; The lateral wall of described workbench main shaft 72 is offered about one straight trough moved towards 720, described first roller and the second roller are engaged in the straight trough of workbench main shaft, the left and right sides of described first roller contacts with the left and right sides wall of straight trough, and the left and right sides of described second roller contacts with the left and right sides wall of straight trough; Described first little axle and on the first roller, described second little axle and on the second roller can workbench main shaft relative to work abutment body move up and down time move up and down relative to straight trough.
In above-mentioned workbench 70, composition graphs 5 to Fig. 8, the front end that described first little axle offers the first axially extending bore 785, first axially extending bore is provided with the first constricted arc edge 786; First ball 787 is installed in first axially extending bore, the first coil tension spring 788 and the first bolt 789 is provided with in first axially extending bore, first bolt is screwed onto in the first axially extending bore, and one end of the first coil tension spring is against on the first bolt, and the other end of the first coil tension spring is against on the first ball; First coil tension spring is by the first ball top to the first constricted arc edge, and the first ball and the first constricted arc edge are offseted, and the first ball part gives prominence to the top end face of the first little axle.Described first axially extending bore 785 is stepped throughhole, first axially extending bore comprises first footpath section 785a and the first path section 785b, first path section is positioned at the front of first footpath section, and the tail end of the first path section is provided with internal thread, and the tail end of first footpath section is provided with internal thread; Described first bolt is stud bolt, and the first bolt is screwed onto the tail end of the first path section; The tail end of described first footpath section is bolted with the first breaker bolt 785c, and the first breaker bolt is the stud bolt of hollow.
In above-mentioned workbench 70, described second little axle offers the second axially extending bore, and the front end of the second axially extending bore is provided with the second constricted arc edge; In described second axially extending bore, the second ball is installed, the second coil tension spring and the second bolt is provided with in second axially extending bore, second bolt is screwed onto in the second axially extending bore, and one end of the second coil tension spring is against on the second bolt, and the other end of the second coil tension spring is against on the second ball; Second coil tension spring is by the second ball top to the second constricted arc edge, and the second ball and the second constricted arc edge are offseted, and the second ball part gives prominence to the top end face of the second little axle.Described second axially extending bore is stepped throughhole, and the second axially extending bore comprises second largest footpath section and the second path section, and the second path section is positioned at the front of second largest footpath section, and the tail end of the second path section is provided with internal thread, and the tail end of second largest footpath section is provided with internal thread; Described second bolt is stud bolt, and the second bolt is screwed onto the tail end of the second path section; The tail end of described second largest footpath section is bolted with the second breaker bolt, and the second breaker bolt is the stud bolt of hollow.
Composition graphs 9, Figure 10, described main spindle box 20 comprises main spindle box body 22, high speed angling cylinder 24; Described main spindle box body is arranged on lathe bed 10, and described indexing spindle 21 is articulated in main spindle box body, and main spindle box body is given prominence in the front-end and back-end of indexing spindle, and front-end and back-end and the main spindle box body of the indexing spindle of outstanding main spindle box body are tightly connected; Described work piece holder 30 is arranged on the front end of indexing spindle, and described high speed angling cylinder is arranged on the rear end of indexing spindle, and described indexing spindle hollow, is inserted with pull bar 25 in the indexing spindle of hollow, and pull bar connects high speed angling cylinder and work piece holder.
In above-mentioned main spindle box 20, composition graphs 9, Figure 10, be provided with synchronous motor 26 in described main spindle box body, the rotor 261 of described synchronous motor is fixed on indexing spindle, the stator 262 of described synchronous motor is arranged on electric machine support 263, and described electric machine support is fixed in main spindle box body.
In above-mentioned main spindle box 20, composition graphs 9, Figure 10, offer main shaft chamber 220 in described main spindle box body 22.Along the axis of indexing spindle 21, in described main shaft chamber, be provided with radial flange 221; Main shaft chamber is divided into front chamber and rear chamber by described radial flange, described radial flange is fixed with main shaft rear flange 27, and described indexing spindle is arranged on main shaft rear flange by rear taper roll bearing; The front end of described main spindle box body is fixed with main shaft forward flange 28, and described indexing spindle is arranged on main shaft forward flange by front cone roller bearing; Described synchronous motor 26 is positioned at rear chamber.
As Figure 11, described knife rest 50 comprises tool-post structure part 51, tool spindle part 52, knife rest alter cutter part 53, knife rest tailstock portion 54.
In above-mentioned knife rest 50, as Figure 12, described tool spindle part comprises sliding carriage 521, the tool spindle case 522 be arranged on sliding carriage, the tool spindle 523 be articulated in tool spindle case, knife bar 524; Sliding carriage is slidably fitted in the top plane of tool-post structure part, and sliding carriage can move along the top plane of tool-post structure part as horizontal linear; Described hobboing cutter is arranged on knife bar, and knife bar and tool spindle are horizontally disposed with, and the front end of knife bar is arranged on tool spindle.Be provided with torque motor 525 in described tool spindle case, the rotor 525a of described torque motor is fixed on tool spindle, and the stator 525b of described torque motor is arranged on the madial wall of tool spindle case.
In above-mentioned knife rest 50, as Figure 12, the front end of described knife bar 524 is arranged on tool spindle 523 by the first coning sleeve 526; Described first coning sleeve centre offers bellmouth, and the first coning sleeve is arranged on the front end face of tool spindle, and the front end of knife bar is arranged in the bellmouth of the first coning sleeve.
In above-mentioned knife rest 50, as Figure 13, described knife rest alters cutter partial fixing on sliding carriage, knife rest is altered cutter part and is articulated with the 3rd screw mandrel 531,3rd screw mandrel is horizontally disposed with, and the 3rd screw mandrel is combined with the 3rd nut 532, and described 3rd nut is fixed in tool-post structure part.
In above-mentioned knife rest 50, as Figure 11, described knife rest tailstock portion is slidably fitted on sliding carriage, and knife rest tailstock portion props up the tail end of knife bar.
In conjunction with Figure 14 to Figure 16, described tailstock 40 comprises top 41, tailstock body 42, trapezoidal rails 43, the 4th ball wire bar pair 44, servomotor 45; Describedly toply be arranged on tailstock body, described tailstock body is hung by the feet in trapezoidal rails, described trapezoidal rails is fixed on crossbeam, the nut of described 4th ball wire bar pair is fixed on tailstock body, the screw mandrel of described 4th ball wire bar pair connects servomotor, described servomotor is arranged on tilted supporter, and servomotor drives tailstock body horizontal linear in trapezoidal rails to slide by the 4th ball wire bar pair; Described tailstock is positioned at the top of knife rest.
In above-mentioned tailstock 40, in conjunction with Figure 14 to Figure 16, the end face of described tailstock body 42 of hanging by the feet offers the ladder chute coordinated with trapezoidal rails 43, the end face of described tailstock body of hanging by the feet is fixed with left pressing plate 46 and right pressing plate 47, described left pressing plate and right pressing plate are positioned at the both sides of ladder chute and ladder chute forms a pair back-off angle, described tailstock body is hung by the feet in trapezoidal rails by a pair back-off angle, and wherein, the top plane of trapezoidal rails is close in the baseplane of described left pressing plate and right pressing plate; Be provided with multiple locking cylinder 460 in described left pressing plate, under the effect of oil pressure, the piston of described locking cylinder can be pressed in the top plane of trapezoidal rails tightly.
In above-mentioned tailstock 40, in conjunction with Figure 14 to Figure 16, described tailstock body 42 comprises slide plate 421, slide 422, dead head 423, fixed block 424, oil cylinder fishplate bar 425, oil cylinder seat 426, oil cylinder 427, the nut of described 4th ball wire bar pair 44 is fixed on slide plate, described slide is arranged on the first half of slide plate bottom surface by threaded fastener, described dead head is arranged on the first half of slide bottom surface by threaded fastener, described top 41 are fixed on dead head, described fixed block is arranged on the latter half of of slide bottom surface by threaded fastener, described oil cylinder fishplate bar is arranged on the latter half of of slide plate bottom surface, described oil cylinder seat is fixed on the bottom surface of oil cylinder fishplate bar, described oil cylinder is fixed on oil cylinder seat, the piston 427a of oil cylinder withstands on fixed block, the center line of the piston of oil cylinder overlaps with top center line.Wherein, described oil cylinder comprises oil cylinder front cover 427b, coil tension spring 427c, oil cylinder bonnet 427d; The rear end of described coil tension spring is fixed on oil cylinder bonnet, and the front end of coil tension spring is against on piston.
In above-mentioned tailstock 40, in conjunction with Figure 14 to Figure 16, the latter half of of described slide plate bottom surface offers the second chute, the top of described oil cylinder fishplate bar is engaged in the second chute, draw-in groove is offered in the two side of oil cylinder fishplate bar, be connected with press strip 428 in draw-in groove, press strip is fixed on the latter half of of slide plate bottom surface by threaded fastener; Described second chute comprises cross section triangle chute triangular in shape and cross section is trapezoidal ladder chute, and the end face of described oil cylinder fishplate bar is provided with the triangle protuberance 425a coordinated with triangle chute and the trapezoidal protuberance 425b coordinated with ladder chute; Between the bottom surface of the ladder chute be combined together and the end face of trapezoidal protuberance, there is certain gap.
In practical operation, tailstock 40 is suspended in the top of knife rest 50, the knife rest 50 be articulated on workbench main shaft 72 drives the effect of tool axis 73 at rotating driving device 77 under, can realize-45 ° /+135 ° revolutions in the horizontal plane, meet the processing of gear, worm gear, particularly worm screw.
Above content is only better embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (9)
1. a horizontal digital-control gear-hobbing machine, comprising: lathe bed (10), main spindle box (20), work piece holder (30), tailstock (40), knife rest (50), hobboing cutter (60), workbench (70); Described main spindle box is arranged on lathe bed, and main spindle box comprises indexing spindle (21), and described work piece holder is arranged on indexing spindle, and described knife rest is installed on the table, and workbench is arranged on lathe bed, and described hobboing cutter is arranged on knife rest; It is characterized in that: also comprise crossbeam (80), tilted supporter (90); One end of described crossbeam is arranged on the top of main spindle box, and the other end of crossbeam is arranged on tilted supporter, and tilted supporter is arranged on lathe bed; Described tailstock comprises top (41), tailstock body (42), trapezoidal rails (43), the 4th ball wire bar pair (44), servomotor (45); Describedly toply be arranged on tailstock body, described tailstock body is hung by the feet in trapezoidal rails, described trapezoidal rails is fixed on crossbeam, the nut of described 4th ball wire bar pair is fixed on tailstock body, the screw mandrel of described 4th ball wire bar pair connects servomotor, described servomotor is arranged on tilted supporter, and servomotor drives tailstock body horizontal linear in trapezoidal rails to slide by the 4th ball wire bar pair; Described tailstock is positioned at the top of knife rest.
2. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 1, is characterized in that: described workbench comprises work abutment body (71), workbench main shaft (72), tool axis (73), line slideway (74), the first nut bracket (75), the first ball screw;
Described first ball screw and line slideway are arranged on lathe bed (10), and the first nut bracket coordinates with the first ball screw and drives workbench on line slideway, to make level to moving back and forth back and forth;
Described work abutment body is in T shape, and T-shaped work abutment body comprises left wing (711), right wing part (712) and vertical portion (713); Described first nut bracket is arranged in left wing, and described left wing and right wing part make level to moving back and forth back and forth on line slideway; Described vertical portion offer run through work abutment body up and down move up and down passage, described workbench main shaft activity is plugged in and moves up and down in passage;
Described workbench main shaft hollow, described tool axis is articulated in workbench main shaft;
The lateral wall of described vertical portion is provided with lifting drive (76), lifting drive comprises the second ball wire bar pair (761), and the second ball wire bar pair drives workbench main shaft to move up and down moving up and down in passage;
The lateral wall of described vertical portion is offered installation through hole, the sidewall of described workbench main shaft is offered and slides through hole (730), the lateral wall of vertical portion is provided with rotating driving device (77), rotating driving device comprises bevel gear mechanism (771), and bevel gear mechanism drives the tool axis in workbench main shaft to rotate through installing through hole and sliding through hole;
Described knife rest (50) is articulated on workbench main shaft, and described knife rest is fixedly connected with tool axis.
3. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 2, is characterized in that:
The madial wall of described vertical portion (713) is provided with guiding mechanism (78), and described guiding mechanism comprises the first little axle (781) and the second little axle (782), the first roller (783) and the second roller (784); Described first little axle and the second little axle are laterally fixed on the madial wall of vertical portion, and the first little axle and the second little axle are fixed on the madial wall of vertical portion in mode arranged side by side up and down; Described first roller housing is located on the first little axle, and described second roller housing is located on the second little axle; The lateral wall of described workbench main shaft (72) is offered about one straight trough moved towards (720), described first roller and the second roller are engaged in the straight trough of workbench main shaft, the left and right sides of described first roller contacts with the left and right sides wall of straight trough, and the left and right sides of described second roller contacts with the left and right sides wall of straight trough; Described first little axle and on the first roller, described second little axle and on the second roller can workbench main shaft relative to work abutment body move up and down time move up and down relative to straight trough;
Described first little axle offers the first axially extending bore (785), and the front end of the first axially extending bore is provided with the first constricted arc edge (786); First ball (787) is installed in the first axially extending bore, the first coil tension spring (788) and the first bolt (789) is provided with in first axially extending bore, first bolt is screwed onto in the first axially extending bore, one end of first coil tension spring is against on the first bolt, and the other end of the first coil tension spring is against on the first ball; First coil tension spring is by the first ball top to the first constricted arc edge, and the first ball and the first constricted arc edge are offseted, and the first ball part gives prominence to the top end face of the first little axle;
Described second little axle offers the second axially extending bore, and the front end of the second axially extending bore is provided with the second constricted arc edge; In described second axially extending bore, the second ball is installed, the second coil tension spring and the second bolt is provided with in second axially extending bore, second bolt is screwed onto in the second axially extending bore, and one end of the second coil tension spring is against on the second bolt, and the other end of the second coil tension spring is against on the second ball; Second coil tension spring is by the second ball top to the second constricted arc edge, and the second ball and the second constricted arc edge are offseted, and the second ball part gives prominence to the top end face of the second little axle;
Described first axially extending bore (785) is stepped throughhole, first axially extending bore comprises first footpath section (785a) and the first path section (785b), first path section is positioned at the front of first footpath section, the tail end of the first path section is provided with internal thread, and the tail end of first footpath section is provided with internal thread; Described first bolt is stud bolt, and the first bolt is screwed onto the tail end of the first path section; The tail end of described first footpath section is bolted with the first breaker bolt (785c), and the first breaker bolt is the stud bolt of hollow;
Described second axially extending bore is stepped throughhole, and the second axially extending bore comprises second largest footpath section and the second path section, and the second path section is positioned at the front of second largest footpath section, and the tail end of the second path section is provided with internal thread, and the tail end of second largest footpath section is provided with internal thread; Described second bolt is stud bolt, and the second bolt is screwed onto the tail end of the second path section; The tail end of described second largest footpath section is bolted with the second breaker bolt, and the second breaker bolt is the stud bolt of hollow.
4. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 1, is characterized in that:
Described main spindle box (20) comprises main spindle box body (22), high speed angling cylinder (24); Described main spindle box body is arranged on lathe bed (10), described indexing spindle (21) is articulated in main spindle box body, main spindle box body is given prominence in the front-end and back-end of indexing spindle, and front-end and back-end and the main spindle box body of the indexing spindle of outstanding main spindle box body are tightly connected; Described work piece holder (30) is arranged on the front end of indexing spindle, described high speed angling cylinder is arranged on the rear end of indexing spindle, described indexing spindle hollow, is inserted with pull bar (25) in the indexing spindle of hollow, pull bar connects high speed angling cylinder and work piece holder;
Synchronous motor (26) is provided with in described main spindle box body, the rotor (261) of described synchronous motor is fixed on indexing spindle, the stator (262) of described synchronous motor is arranged on electric machine support (263), and described electric machine support is fixed in main spindle box body.
5. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 4, is characterized in that: offer main shaft chamber (220) in described main spindle box body (22); Along the axis of indexing spindle (21), in described main shaft chamber, be provided with radial flange (221); Main shaft chamber is divided into front chamber and rear chamber by described radial flange, described radial flange is fixed with main shaft rear flange (27), and described indexing spindle is arranged on main shaft rear flange by rear taper roll bearing; The front end of described main spindle box body is fixed with main shaft forward flange (28), and described indexing spindle is arranged on main shaft forward flange by front cone roller bearing; Described synchronous motor (26) is positioned at rear chamber.
6. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 1, is characterized in that:
Described knife rest (50) comprises tool-post structure part (51), tool spindle part (52), knife rest alter cutter part (53), knife rest tailstock portion (54);
Described tool spindle part comprises sliding carriage (521), the tool spindle case (522) be arranged on sliding carriage, the tool spindle (523) be articulated in tool spindle case, knife bar (524); Sliding carriage is slidably fitted in the top plane of tool-post structure part, and sliding carriage can move along the top plane of tool-post structure part as horizontal linear; Described hobboing cutter is arranged on knife bar, and knife bar and tool spindle are horizontally disposed with, and the front end of knife bar is arranged on tool spindle;
Described knife rest alters cutter partial fixing on sliding carriage, knife rest is altered cutter part and is articulated with the 3rd screw mandrel (531), 3rd screw mandrel is horizontally disposed with, and the 3rd screw mandrel is combined with the 3rd nut (532), and described 3rd nut is fixed in tool-post structure part;
Described knife rest tailstock portion is slidably fitted on sliding carriage, and knife rest tailstock portion props up the tail end of knife bar;
Be provided with torque motor (525) in described tool spindle case, the rotor (525a) of described torque motor is fixed on tool spindle, and the stator (525b) of described torque motor is arranged on the madial wall of tool spindle case.
7. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 6, is characterized in that: the front end of described knife bar (524) is arranged on tool spindle (523) by the first coning sleeve (526); Described first coning sleeve centre offers bellmouth, and the first coning sleeve is arranged on the front end face of tool spindle, and the front end of knife bar is arranged in the bellmouth of the first coning sleeve.
8. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 1, it is characterized in that: described in the end face of tailstock body (42) of hanging by the feet offers the ladder chute coordinated with trapezoidal rails (43), the end face of described tailstock body of hanging by the feet is fixed with left pressing plate (46) and right pressing plate (47), described left pressing plate and right pressing plate are positioned at the both sides of ladder chute and ladder chute forms a pair back-off angle, described tailstock body is hung by the feet in trapezoidal rails by a pair back-off angle, wherein, the top plane of trapezoidal rails is close in the baseplane of described left pressing plate and right pressing plate; Be provided with multiple locking cylinder (460) in described left pressing plate, under the effect of oil pressure, the piston of described locking cylinder can be pressed in the top plane of trapezoidal rails tightly.
9. a kind of horizontal digital-control gear-hobbing machine as claimed in claim 8, is characterized in that:
Described tailstock body (42) comprises slide plate (421), slide (422), dead head (423), fixed block (424), oil cylinder fishplate bar (425), oil cylinder seat (426), oil cylinder (427), the nut of described 4th ball wire bar pair (44) is fixed on slide plate, described slide is arranged on the first half of slide plate bottom surface by threaded fastener, described dead head is arranged on the first half of slide bottom surface by threaded fastener, described top (41) are fixed on dead head, described fixed block is arranged on the latter half of of slide bottom surface by threaded fastener, described oil cylinder fishplate bar is arranged on the latter half of of slide plate bottom surface, described oil cylinder seat is fixed on the bottom surface of oil cylinder fishplate bar, described oil cylinder is fixed on oil cylinder seat, the piston (427a) of oil cylinder withstands on fixed block, the center line of the piston of oil cylinder overlaps with top center line,
Described oil cylinder comprises oil cylinder front cover (427b), coil tension spring (427c), oil cylinder bonnet (427d); The rear end of described coil tension spring is fixed on oil cylinder bonnet, and the front end of coil tension spring is against on piston;
The latter half of of described slide plate bottom surface offers the second chute, the top of described oil cylinder fishplate bar is engaged in the second chute, draw-in groove is offered in the two side of oil cylinder fishplate bar, and be connected with press strip (428) in draw-in groove, press strip is fixed on the latter half of of slide plate bottom surface by threaded fastener; Described second chute comprises cross section triangle chute triangular in shape and cross section is trapezoidal ladder chute, and the end face of described oil cylinder fishplate bar is provided with the triangle protuberance (425a) coordinated with triangle chute and the trapezoidal protuberance (425b) coordinated with ladder chute; Between the bottom surface of the ladder chute be combined together and the end face of trapezoidal protuberance, there is certain gap.
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| CN201510304137.0A CN104827134B (en) | 2015-06-04 | 2015-06-04 | A kind of horizontal digital-control gear-hobbing machine |
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| CN201510304137.0A CN104827134B (en) | 2015-06-04 | 2015-06-04 | A kind of horizontal digital-control gear-hobbing machine |
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| CN112935422A (en) * | 2021-02-04 | 2021-06-11 | 台州格凌机械股份有限公司 | Gear turning machine and mounting fixture thereof |
| CN112974999A (en) * | 2021-03-04 | 2021-06-18 | 江苏松田数控科技有限公司 | Cutter disc slewing mechanism of numerical control horizontal gear hobbing machine |
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| CN112974999A (en) * | 2021-03-04 | 2021-06-18 | 江苏松田数控科技有限公司 | Cutter disc slewing mechanism of numerical control horizontal gear hobbing machine |
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Denomination of invention: Horizontal numerical control gear hobbing machine Effective date of registration: 20210907 Granted publication date: 20170606 Pledgee: Huzhou Wuxing Rural Commercial Bank Co.,Ltd. balidian sub branch Pledgor: ZHEJIANG RICHUANG ELECTROMECHANICAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021330001407 |