CN106424970A - Numerical control gear hobbing machine - Google Patents

Abstract

The invention relates to a numerical control gear hobbing machine. A stand column and a machine body are rigidly connected in an L form; a base, a slide plate, a tail base and a cutter frame are arranged on the stand column in a similar n form; the right side of the base is connected with the cutter frame through a cover; the back side of the base is matched and connected with the slide plate; the slide plate drives the base and the cutter frame to horizontally move to realize X-directional feeding of a machine tool; the slide plate vertically moves on the stand column to realize Z-directional feeding of the machine tool; the tail base includes a base body fixed on the stand column; a tip slide base module is slidingly mounted on the base body in the longitudinal direction; a worktable is mounted on the machine body, and is provided with a workpiece fixture capable of positioning a workpiece; the workpiece is pushed tightly or loosened by a tip on the tip slide base module; and an indexing main shaft of the cutter frame is connected with the cover, and rotates through a driving device to drive rotation of a hobbing tool on the cutter frame for cutting the workpiece. The stand column and the worktable do not move; the work of the machine tool is realized by matching movements of the base, the slide plate, the tail base and the cutter frame; and the numerical control gear hobbing machine is compact in structure and high in rigidity.

Description

A kind of chain digital control gear hobbing machine

Technical field：

The present invention relates to gear-hobbing machine apparatus field, more particularly to a kind of dry type or wet type superfinishing ultrahigh speed numerical control The main frame of gear-hobbing machine.

Background technology：

The main frame of existing chain digital control gear hobbing machine be not column movement be exactly movable workbench design, be provided with rear column, will push up Fine stern pedestal is fixed on rear column, and such device makes the apex tailstock body portion of the main frame of chain digital control gear hobbing machine and tailstock basis Part connection is not tight, and integral rigidity is poor, and top rotating accuracy can not be adjusted, unstable in top motor process, top The rigidity of point is bad, and whole device structure is not compact.

While existing structure has very long driving-chain between hobboing cutter and workbench, the indexing accuracy of lathe is depending on transmission The precision of chain.Gap in driving-chain between actuated element reduces transmission rigidity, and rushing of producing between hobboing cutter and workpiece Hit the Fast Wearing that can cause hobboing cutter.For this reason, the designer of gear-hobbing machine is pursuing the driving-chain for shortening lathe always.

Although the base of the main frame of existing chain digital control gear hobbing machine is not to directly cut to use functional part, but lathe slide plate and This two-part connector of cutter holder assembly, which requires with characteristics such as high rigidity, shock resistances, so just can guarantee that lathe in height Stable performance in the cutting of fast, high-precision, high intensity, effect is good, and understructure of the prior art is not compact, base floor space Greatly, its poor rigidity, shock resistance is bad.

Content of the invention：

The purpose of the present invention is that column, workbench are not in place of the deficiencies in the prior art, providing a kind of chain digital control gear hobbing machine Mobile, lathe work coordinates the motion of base, slide plate, tailstock and knife rest to realize, its compact conformation, and rigidity is high.

The technology solution of the present invention is as follows：

A kind of chain digital control gear hobbing machine, the main frame is in vertical layout, and the main frame includes lathe bed, base, slide plate, column, tail Seat, knife rest, workpiece, work piece holder and workbench, the column and the L-shaped rigid connection structure of lathe bed；The base, slide plate, Tailstock, knife rest are respectively installed on column, and on column, become Jiong shape to arrange；The right side of the base is connected with knife by overcoat Frame；Nut bracket on rear side of the base is paid nut with the ball screw on slide plate and is connected, and ball screw revolution just drives bottom Horizontal direction movement made by seat and knife rest；Realize the radial feed of lathe X-axis；The slide plate is vertically moved on column, Realize machine Z-axis vertical feed；The tailstock includes the pedestal on column that is locked, and longitudinal sliding motion on pedestal is equiped with top Sharp sliding assembly；The workbench is on lathe bed, and is provided with work piece holder on workbench, is positioned with work on work piece holder Part, and workpiece holds out against or unclamped by top on top sliding assembly；The indexing spindle of the knife rest is connected with the overcoat, Indexing spindle is driven by driving means and rotates, so as to cut to workpiece with the hobboing cutter on movable knife rack.

Preferably, the base is square base body, to put outward and be provided with the preset screw being installed together with knife rest.

Preferably, the overcoat is fastenedly connected with the leading portion of indexing spindle；The back segment of the indexing spindle adopts ball axle Hold a support, and be fastened with indexing spindle between master gear, and indexing spindle and master gear and positioned by flange, and flange with Short set is equiped between indexing spindle；Servomotor by decelerator drive indexing spindle revolution so that blade carrier component also with Revolution.

Preferably, be fastened with footstock on the pedestal of the tailstock 5, the pedestal is locked on column, makes the pedestal be in Suspended structure；Line slideway is longitudinally equiped with the pedestal, top sliding assembly is installed on line slideway；Described top Sliding assembly include slide on line slideway and be movably arranged in slide with the top of high rotating accuracy；Institute State and the centre driving device for driving ball screw rotation is installed on footstock, coordinate on ball screw and ball nut is installed, institute State ball nut to be fixed on the slide.

Preferably, the centre driving device includes the servo electricity by servomotor fixed seat on footstock Machine, the servomotor connects worm reduction gear, and the main shaft of worm reduction gear is connected with ball screw by shaft coupling.

Preferably, bearing holder (housing, cover) is provided with the slide, inside the bearing holder (housing, cover), axle is provided with by ball bearing b, and Axle sleeve is connected on described top outside；Lower flange is connected with below the bearing holder (housing, cover), and lower flange is fastened on slide；Under described Protecting cover is installed with below flange.

Preferably, the workbench includes workbench housing and the torque motor being installed on workbench housing, described The rotor of torque motor is fixed on main shaft, and the stator of torque motor is fixed in terminal pad, and terminal pad and workbench housing Bottom is closely connected；Groove being provided with the middle and upper part position of the workbench hull outside, pad is fastened with groove, on main shaft Angled absolute encoder is installed, and the measurement head of angle absolute encoder is located in groove, and the lower end of measurement head is from pad In pass through.

Preferably, the main shaft lower end is tightly cased with ball bearing c, and ball bearing c is in the hole of terminal pad, and uses hole Fixed with circlip a；The main shaft lower end is fastened with oil cylinder flange, and oil cylinder flange, circlip for hole a and ball axle Hold between c and rotary seal ring is installed；The oil cylinder flange lower end is fastened with angling cylinder.

Preferably, the knife rest 6 includes tool holder body portion, sliding carriage portion, knife rest tailstock portion, cutter changing Account Dept Knife portion is altered with knife rest, the tool holder body portion is installed in the outer of lathe base and puts；The sliding carriage portion is slidably mounted on knife On frame body, knife rest tailstock portion is in tool holder body portion；The cutter changing Account Dept is in knife rest tailstock portion； The knife rest alters knife portion in sliding carriage portion.

Preferably, the sliding carriage portion includes high-speed main spindle motor and sliding carriage, the high-speed main spindle motor Rotor hot jacket is fastened on rear cage in the right-hand member of main shaft, the stator of high-speed main spindle motor；Cage is together with high-speed main spindle motor afterwards Stator together load in the preset holes of sliding carriage, and be fastened on the right side of sliding carriage with soket head cap screw；Described Knife rest tailstock portion includes knife rest tailstock body and tailing axle, is socketed with thrust ball bearing c outside the tailing axle, and thrust ball bearing c loads In the hole of knife rest tailstock body, the left end of tailing axle and positioned at thrust ball bearing c left end by the method that is fastened on knife rest tailstock body Blue positioning, the right-hand member of the tailing axle and right-hand member positioned at thrust ball bearing c is socketed with cushion cover；The cutter changing Account Dept includes little Axle, the screw mandrel for handling, being connected with little axle by the engagement of a pair of gear pair on little axle, are coordinated on the screw mandrel and install There is feed screw nut, and feed screw nut is fixed on knife rest tailstock body；Knife portion altered by the knife rest includes to be installed in watching on tool-post structure Take motor to pay by the ball screw that elastic coupling is connected with servomotor, the ball screw is paid and is equiped with thrust Ball bearing d is supported, and the outer ring of thrust ball bearing d is mounted on gland, and gland is installed on tool-post structure；The ball wire The screw mandrel portion that bar is paid tightens fixed bit double nut, and ball screw is paid cooperation and is provided with feed screw nut, and feed screw nut is fastened on On fixed block, fixed block is fastened on the sliding carriage in sliding carriage portion.

The beneficial effects of the present invention is：

The present invention does not routinely arrange the rear column for installing tailstock, but pedestal is locked makes seat on machine pillar Body is in suspension type mode, makes integral rigidity high.The present invention is top a very high rotating accuracy, and integral rigidity also require that non- Chang Gao.Top, carriage portion and footstock base component arrangement at a right angle, both are not only closely coupled, and straight by high rigidity The connection of line guide rail can be performed relative motion.Whole tailstock structure is not only novel but also compact, and rigidity is high.

Torque motor of the present invention directly drives indexing spindle, and not only driving moment is big, and is truly realized zero clearance transmission, The super μ level of workpiece accuracy, makes directly to drive workbench and has ultrashort transmission chain structure, at the same angle absolute encoder can automatic detection, Not busy ring control, strong guarantee lathe is high-precision, efficient, high intensity cutting.

The square base body of the present invention is lathe slide plate and this two-part connector of cutter holder assembly.Due to its high rigidity The characteristic of excellent in vibration resistance, it is ensured that this lathe stable performance in high speed, the cutting of high-precision, high intensity, effect is good.

High-speed main spindle motor of the present invention drives main shaft gyration, directly drives, and really realizes zero-clearance transmission, and driving-chain is ultrashort, Using absolute encoder, not busy ring control.Rotating speed so rotates the hobboing cutter being clipped between tailing axle and main shaft up to 10000rpm； Servomotor directly drives ball screw by elastic coupling and pays rotation, makes feed screw nut promote sliding carriage part to make left and right Mobile, servomotor adopts absolute encoder and closed loop control, alters knife transmission accuracy and reaches 1*10-mm.While passing through during tool changing Handle the little axle of drive to rotate, in the presence of gear pair, rotate screw mandrel, make feed screw nut carry movable knife rack tailstock body or so to move Dynamic, it is easy to hobboing cutter to change and install, whole cutter changing Account Dept is an integrated dynamic hobboing cutter clamping system, operation letter Single, safe and reliable, the time used by a hobboing cutter of changing is less than 30 seconds.This straight drive gear hobbing machine knife frame, distribution form uniqueness, structure sets Count ingenious innovation.Many in kinematic pair, in the case that component part is many, keep whole knife rest not only to have sufficiently high entirety firm Property, and also sufficiently strong shock resistance.Fully meet lathe carry out at a high speed, high-precision, efficient, high intensity machining all Condition.

Lathe bed of the present invention adopts artificial marble, and under high and low temperature state, thermal deformation is little.Lathe geometric accuracy retentivity itself Persistently, under the conditions of high-speed cutting, machine finish is not only high but also stable.Lathe ingehious design is used for dry milling or wet rolling Cleaning processing district, it can be ensured that effectively remove the dry section in processing district or cutting residual.Lathe is equipped with chip removal system when dry milling or wet rolling System and the option of corresponding dust or oil mist filter.Lathe is equipped with heat exchanger, and in processing, hydraulic oil, cooling oil are by heat Exchange and ensure that cutter spindle high-precision bearing, dividing spindle high-precision bearing keep constant temperature in long-term operating, keep its high accuracy Revolution.Cooling oil passes through heat exchange, cools down cutter all the time, improves tool life.

Description of the drawings：

The present invention is described further below in conjunction with the accompanying drawings：

Fig. 1 is the structural representation of the present invention；

Fig. 2 is the structural representation of the base of the present invention；

Fig. 3 is the structural representation of A-A in Fig. 2；

Fig. 4 is the structural representation of B-B in Fig. 2；

Fig. 5 is the structural representation of the tailstock of the present invention；

Fig. 6 is A-A sectional view in Fig. 5；

Fig. 7 is the structural representation in Fig. 6 at A；

Fig. 8 is the structural representation in Fig. 6 at B；

Fig. 9 is the structural representation of the workbench of the present invention；

Figure 10 is the mplifying structure schematic diagram in Fig. 9 at A；

Figure 11 is the mplifying structure schematic diagram in Fig. 9 at B；

Figure 12 is the front view of the knife rest of the present invention；

Figure 13 is the left view of Figure 12；

Figure 14 is the sectional view of A-A in Figure 12；

Figure 15 is the sectional view of B-B in Figure 13；

Figure 16 is the sectional view of C-C in Figure 14；

Figure 17 is the sectional view of J-J in Figure 13.

In figure symbol description：1 lathe bed；3 slide plates；4 columns；7 workpiece；8 work piece holders；10 overcoats； 17 indexing spindle；

2 bases；201 square base bodies；202 bonnets；204 left sleeves；205 master gears；206 is right Sleeves；207 short sets；208 ball bearing a；209 length sets；211 line slideways；212 oil connections；213 plates； 214 pads；Reduction of fractions to a common denominator oil clot more than 215；216 cover plates；217 indexing spindle；218 flanges；220 nut brackets；221— Adjust pad；222 servomotors；223 decelerators；224 nuts；225 flange b；226 supports；228 flanges Disk；230 supporting plates；231 taper roll bearings；233 flange c；234 shaft gears.

5 tailstocks；501 footstocks；502 worm reduction gears；503 servomotors；504 pedestals；506 flanges； 507 bearings；508 packing rings；509 nuts；511 ball screws；512 line slideways；513 is top；514 slide Seat；516 machine pillars；517 inner sleeves；518 overcoats；519 axles；522 protecting covers；523 ball bearing b；524 purgatioies Blue；525 bearing holder (housing, cover)s；527 back-up rings.

9 workbench；901 workbench housings；902 frame plates；904 circlip for hole b；905 rotary sealings Circle；906 outer rings；907 outer washers；908 top covers；909 inner shield rings；910 inner washers；912 inner rings；914 balls Bearing d；915 main shafts；916 workbench minor flaps；918 angle absolute encoders；919 pads；920 torques electricity Machine；922 sets；924 ball bearing c；926 rotary seal rings；927 oil cylinder flange；928 revolution at a high speed oil cylinders；930— Circlip for hole a；931 packing rings；933 terminal pads.

6 knife rests；I tool holder body portion；II sliding carriage portion；III knife rest tailstock portion；IV cutter changing system Portion；Knife portion altered by V knife rest；601 handle；602 fix upper shield；604 back-up rings；605 hexagonal blocks；606 fixed covers； 608 flat key c；609 lower axle boards；610 upper shaft boards；611 disk springs；612 screw mandrels；613 casings； 614 tool-post structures；616 feed screw nuts；6161 back-up rings；617 spindle motors；619 sliding carriages；Cage after 621； 622 encoders；624 thrust ball bearing a；625 straight pins；627 flanges；629 thrust ball bearing c；630 knife rests Tailstock body；631 tailing axles；632 cage plates；633 cushion covers；634 left positioning sleeves；635 right positioning sleeves；636 revolutions are close Seal；637 cage plates；638 sets；639 thrust ball bearing b；640 inner spacing collars；641 outer separators；642 main shafts； 644 bearing back shrouds；645 adjust pads；647 glands；648 flat key a；650 pulling shafts；652 flange forms are fixed Set；653 springs；655 tegillums；656 little handles；657 deep groove ball bearings；658 sets；659 flat key b；660 teeth Wheel is paid；661 little axles；662 servomotors；663 double nuts；664 thrust ball bearing d；669 straight pins；671 rubbers Skin back-up ring；672 back-up rings；673 spring washers；675 line slideways；676 elastic couplings；677 glands；679— Fixed block；680 ball screws are paid.

Specific embodiment：

See accompanying drawing 1～17, a kind of chain digital control gear hobbing machine, the main frame is in vertical layout, the main frame includes lathe bed 1, base 2nd, slide plate 3, column 4, tailstock 5, knife rest 6, workpiece 7, work piece holder 8 and workbench 9, the column 4 and the L-shaped rigidity of lathe bed 1 Attachment structure；The base 2, slide plate 3, tailstock 5, knife rest 6 are respectively installed on column 4, and on column, become Jiong shape to arrange；Institute The right side for stating base 2 is connected with knife rest 6 by overcoat 10；Ball screw on the nut bracket of the rear side of the base 2 and slide plate 3 Pay nut to be connected, ball screw revolution just drives base 2 and knife rest 6 to make horizontal direction movement；The radial direction for realizing lathe X-axis is entered Give；The slide plate 3 is vertically moved on column 4, realizes machine Z-axis vertical feed；The tailstock 5 includes to be locked Pedestal on column, longitudinal sliding motion on pedestal is equiped with top sliding assembly；The workbench 9 is on lathe bed 1, and work Work piece holder 8 is installed in station 9, workpiece 7 is positioned with work piece holder 8, and workpiece 7 is by top on top sliding assembly Hold out against or unclamp；The indexing spindle 17 of the knife rest 6 is connected with the overcoat, and indexing spindle is driven by driving means and revolves Turn, so as to cut to workpiece 7 with the hobboing cutter on movable knife rack 6.

See accompanying drawing 2～4, the base is square base body, including square base body 201, square base body 201 On overcoat 10 is installed, nut bracket 220, and square base body 201 and nut are installed on the square base body 201 Adjust pad 221 is installed between support 220；The overcoat 10 is by 8 M12*40 soket head cap screws and indexing spindle 17 Leading portion is fastenedly connected, and the back segment of the indexing spindle 17 is supported using 2 130*200*33 single row angular contact ball bearing a208, And main tooth is fastened with using 6 M10*85 soket head cap screws and by left sleeves 204 and right sleeves 206 on indexing spindle 17 Wheel is positioned by flange 218 between 205, and indexing spindle 17 and master gear 205, and is equiped between flange and indexing spindle 17 Short set 207.By 24 M10*70 soket head cap screws, line slideway 211 is installed on the square base body 201.Described outer Set 10 is provided with the preset screw being installed together with blade carrier component, and blade carrier component can be conveniently installed on overcoat 10.Described 17 left end of indexing spindle is fastened with bonnet 202 by 3 M5*16 soket head cap screws.

Two oil pipes of the blade carrier component are each passed through two endoporus on indexing spindle 17, and two oil pipes respectively with 2 1/2 oil connections 212 are connected, and two oil connections connect long oil pipe respectively and are communicated to Hydraulic Station.The indexing spindle Two groups of thrust ball bearings 208, and two groups of thrust ball axles are installed on 17 and between the back segment of flange 218 and indexing spindle 17 Hold between 208 inner sleeve and connected by long set 209.

The master gear 205 is meshed with shaft gear 234, and the shaft gear 234 is by the single-row circular cone rolling of 17*40*13.25 Sub- bearing 231 is supported and is positioned by ring flange 228, and 228 side of ring flange is connected with method by 6 M4*12 soket head cap screws Blue b25, is provided with 2 M16*1.5 nuts 224 positioned at the end of taper roll bearing 231 on shaft gear 34；Ring flange 228 Opposite side is connected with flange c233 by 6 soket head cap screws；Between the ring flange 28 and flange c233, supporting plate is installed 230, and supporting plate 230 is fastened on ring flange 228 by 3 M5*16 soket head cap screws；The supporting plate 230 and ring flange It is provided between 228 between support 226, and supporting plate 230 and support 226 and is fixed by 4 M8*20 soket head cap screws；Support The 5 M12*30 soket head cap screws that supporting plate 230 can be fixed are installed on plate 230.

The square base body 201 is provided with cover plate 216, is provided with many reduction of fractions to a common denominators oil clot 215, many reduction of fractions to a common denominators on cover plate 216 Multigroup oil-piping is communicated with oil clot 215, and oil-piping is by the plate 213 installed in 201 outside of square base body and pad 214 Guide-localization.

Nut bracket 220 on square base body 201 is paid nut with the ball screw on lathe slide plate and is connected, ball Screw mandrel revolution just drives square base body 201 and the knife rest on overcoat 10 to make horizontal direction movement, realizes lathe X-axis Radial feed；The lathe slide plate is vertically moved on column, and square base body 201 and knife rest are also slided with lathe Plate is vertically moved, and realizes machine Z-axis vertical feed；The 1FT7044-1AF71 servomotor 222 passes through 1:20 slow down Device decelerator 223 drives indexing spindle 17 to turn round, so that blade carrier component is also and then turned round.

Seeing accompanying drawing 5～8, footstock 501 is fastened with the pedestal 504 of the tailstock 5, and pedestal 504 is located at the right side of footstock 501 Lower section, the pedestal 504 is locked makes pedestal in suspension type mode on machine pillar.The pedestal 504 passes through 8 M16* 60 soket head cap screws are locked on column 516.As this device does not routinely arrange the rear column for installing tailstock, but will Apex tailstock body is directly anchored on machine pillar, and integral rigidity is more preferable.

504 left side longitudinal direction of the pedestal is equiped with line slideway 512, is provided with top sliding assembly on line slideway 512； The present embodiment cathetus guide rail 512 has two groups, is provided with two groups of linear slider, four groups of straight lines per organizing to coordinate on line slideway 512 Top sliding assembly is installed on slide block.The top driving dress for driving the rotation of ball screw 511 is installed on the footstock 501 Put, coordinate on ball screw and ball nut is installed, the ball nut is fixed on the cunning with hexagonal screw rod in 8 M8*25 On seat.

Bearing 507 is installed between the upper end of the ball screw 511 and footstock 501, and bearing top is provided with flange 506, and flange 506 is fixed in footstock 501 by 4 M6*16 soket head cap screws.The centre driving device is included by watching Servomotor 503 of the motor fixing seat on footstock 501 is taken, the servomotor connects worm reduction gear 502, and worm gear subtracts The main shaft of fast machine is connected with ball screw by shaft coupling.In the present embodiment, using 1FK7060-0WB15 servomotor 503 and K202VF008MB20 high accuracy worm reduction gear 502 drives ball screw 511 to rotate, and realizes the up and down motion of slide 514.

On the ball screw 511 and it is provided with nut 509, and ball screw 511 positioned at the top of bearing 507 and is located at Packing ring 508 is installed between nut 509 and bearing 507.The ball nut is fixed on institute by hexagonal screw rod in 8 M8*25 State on slide.

The top sliding assembly includes the slide 514 on line slideway 512 and is movably arranged in slide With high rotating accuracy top 513.Bearing holder (housing, cover) 525 is installed on the slide, the bearing holder (housing, cover) 525 is internal to pass through ball bearing B523 is provided with axle 519, and the ball bearing 523 is 5 sets of high accuracy 35*55*10 single row angular contact ball bearings, and 5 sets single-row In angular contact ball bearing, 519 upper end of respective shaft is provided with a set of, and 519 bottom of respective shaft is provided with four sets side by side, and upper end is a set of And linked together by inner sleeve 517 and overcoat 518 between four sets of lower end.The axle 519 is socketed in outside described top 513 Portion；525 lower section of the bearing holder (housing, cover) is connected with lower flange 524 by M8*25 soket head cap screw, and the lower flange passes through 4 M6*20 Soket head cap screw is fastened on slide 514；524 lower section of the lower flange is installed with protecting cover 522.The axle 519 and ball axle The upper end for holding 523 is sealed with back-up ring 527, and top 513 upper end is bolted with soket head cap screw, and soket head cap screw is from back-up ring 527 On through.

Servomotor 503 and high accuracy worm reduction gear 502 drive ball screw 511 to rotate, and realize slide 514 along straight Line guide rail 512 moves up and down, so as to driving top up and down motion to hold out against or loosening workpiece.Whole apex tailstock structure novel and Compact, rigidity height.

See accompanying drawing 9～11, the workbench 9 includes workbench housing 901 and is installed on workbench housing 901 1FW6060-0WB15 torque motor 920, the rotor of the torque motor 920 covers 922 and 4 M6*12 soket head cap screws to be fixed On main shaft 915, the stator of torque motor 920 is fixed in terminal pad 933 with 8 M6*16 soket head cap screws, and terminal pad 933 are closely connected by 6 M8*45 soket head cap screws with 901 bottom of workbench housing；901 outside of the workbench housing Groove being provided with the position of middle and upper part, is fastened with pad 919 by 2 M3*25 soket head cap screws in groove, passes through 6 on main shaft 915 Individual M5*20 soket head cap screw is provided with ERA4480C angle absolute encoder 918, and the measurement head of angle absolute encoder 918 In groove, and the lower end of measurement head is passed through from pad 919.

Frame plate 902 is fastened with by 4 M10*25 soket head cap screws on the workbench housing 901.Under the main shaft 915 End is tightly cased with high precision 16 5*100*18 single row angular contact ball bearing c924, and ball bearing c924 is installed in the hole of terminal pad 933 In, and fixed with circlip for hole a930.It is provided with the hole of the terminal pad 933 for regulating ball bearing c924's The packing ring 931 of axially mounted size.

915 lower end of the main shaft is fastened with oil cylinder flange 927 by 4 M6*25 soket head cap screws, and oil cylinder flange 927, The rotary seal ring 926 of 80*100*10 is installed between circlip for hole a930 and ball bearing c924；The oil cylinder flange 927 lower ends are fastened with RK-100N revolution at a high speed oil cylinder 928 by 4 M8*75 soket head cap screws.915 upper end of the main shaft passes through 6 M10*50 soket head cap screws are connected with top cover 908.

On the workbench housing 901 and be located at groove location at workbench minor flaps 916 are installed.The main shaft 915 Top is provided with 3 high accuracy 100*140*20 single row angular contact ball bearing d914, and first ball bearing d from top to bottom Outer washer 907, the inner ring of first ball bearing d and second ball axle are installed between outer ring and the outer ring of second ball bearing d Inner washer 910 is installed between the inner ring for holding d.And in being provided between the bearing inner race of the ball bearing d914 of the top and top cover Circle 912, is provided with outer ring 906, and outer ring 6 passes through 6 M8*25 between the bearing outer ring of the ball bearing d914 of the top and top cover Soket head cap screw is fastened on workbench housing 901.Inner shield ring 909 is installed between the top cover 908 and outer ring 906.Described Ball bearing d914 is in the hole inside workbench housing 901, and is fixed using circlip for hole b904, and hole is used The rotary seal ring 905 of 120*150*12 is installed between circlip b904 and ball bearing d914.

As long as the pull bar in work piece holder is connected with screw in revolution at a high speed oil cylinder 928, main shaft 915 is in revolution at a high speed Tightly workpiece is tensed, allow lathe normally to be cut.Indexing spindle 915 is directly driven using torque motor, not only driving moment Greatly, and zero clearance is truly realized, whole Working table structure is not only compact, and driving-chain is ultrashort；While angle absolute coding The high-resolution automatic detection of device 18, lower index main shaft 915 remains to keep high resolution in the case of 3000rpm Precision, strong guarantee lathe is high-precision, efficient, high intensity cutting.

See accompanying drawing 12～17, the knife rest 6 includes tool holder body portion I, sliding carriage portion II, knife rest tailstock portion III, cutter Change Account Dept IV and knife portion V altered by knife rest, the tool holder body portion is installed in the outer of lathe base and puts；The sliding carriage Portion is slidably mounted in tool holder body portion, and knife rest tailstock portion is in tool holder body portion；The cutter changing Account Dept installs In knife rest tailstock portion；The knife rest alters knife portion in sliding carriage portion.

The tool holder body portion includes tool-post structure 614 and the line slideway 675 being fastened on tool-post structure 614, the knife rest Slide plate portion is on line slideway.In the present embodiment, line slideway 75 is fastened on knife rest using 60 M6*30 soket head cap screws Constitute tool holder body rigid body on body 614, tool holder body rigid body directly drives the topmost basic components of knife rest of gear-hobbing machine, straight drive Overcoat of the knife rest of gear-hobbing machine by 5 M12*55 soket head cap screws with lathe base is fastenedly connected, hexagonal spiral shell in 5 M12*55 Nail is used as this two-part specialty connector.

The sliding carriage portion includes high-speed main spindle motor 617 and sliding carriage 619, and the high-speed main spindle motor 617 is 1FE1082-6W high-speed main spindle motor, the rotor hot jacket of the high-speed main spindle motor 617 is in the right-hand member of main shaft 642, rotor Hot jacket temperature is in the range of 145～235 DEG C.The stator of high-speed main spindle motor 617 is fastened on by 4 M6*40 soket head cap screws Afterwards on cage 621；Cage 621 together loads in the preset holes of sliding carriage 619 together with the stator of high-speed main spindle motor 617 afterwards, And be fastened on the right side of sliding carriage 619 with 6 M6*35 soket head cap screws.1FE1082-6W high-speed main spindle motor 617 is fixed Son is cooled down using recycle oil, it is ensured that its normal operation at a high speed.High-speed main spindle motor 617 drives main shaft 642 to turn round, and driving-chain surpasses Short, rotating speed is up to 10000rpm.

The right end of the main shaft 642 equipped with high accuracy 40*80*18 single row angular contact ball bearing a624 andCoding Device 622, thrust ball bearing a624 right-hand member is provided with bearing back shroud 644, and bearing back shroud 644 is by hexagonal spiral shell in 4 M4*16 Nail is fastened on rear cage 621, and is provided with adjust pad 645 between thrust ball bearing 624 and bearing back shroud 644.Described 621 right-hand member of cage is fastened with gland 647 by 5 M5*12 soket head cap screws afterwards, and encoder 622 is encapsulated in bonnet by gland In seat 621.

On main shaft 642 from left end be sequentially loaded into 636, one group of high precision 16 0*95*18 of 70*90*10 rotary seal ring single-row to Heart thrust ball bearing b639, inner spacing collar 640, outer separator 641 and three groups of high precision 16 0*95*18 single row angular contact ball bearings 70*90*10 rotary seal ring 636 in b639, set 638 and cage plate 637, and cage plate 637 described in one group of press-in, and cage plate 637 It is fastened on sliding carriage 619 using 6 M6*35 soket head cap screws.In the present embodiment, four groups of high precision 16 0*95*18 single-row to Heart thrust ball bearing b639 presses direction shown in Fig. 3 and installs and stress, and after 4 thrust ball bearing b assemblings, preload EL reaches 100N.Bearing group adopts circulating oil lubrication, guarantees that bearing group temperature rise in long-time revolution at a high speed is constant by heat exchange.

642 left end of the main shaft is fastened with right positioning sleeve 635 with 6 M6*20 soket head cap screws.The knife rest tailstock portion bag Knife rest tailstock body 630 and tailing axle 631 is included, outside the tailing axle 631, is socketed with 4 high precision 16 0*95*18 single row angular contact ball axles C629 is held, and thrust ball bearing c629 loads in the hole of knife rest tailstock body 630, and tailing axle 631 and 4 high precision 16 0*95*18 are mono- Row angular contact ball bearing c629 integrally loads in 630 hole of tailstock body, and thrust ball bearing c629 presses direction shown in Fig. 3 and installs simultaneously Stress, the left end of tailing axle 631 and positioned at thrust ball bearing c629 left end by the flange that is fastened on knife rest tailstock body 630 627 positioning, flange 627 is fastened on knife rest tailstock body 630 with 8 M5*16 soket head cap screws, the right-hand member of tailing axle 631 and is located at The right-hand member of thrust ball bearing c629 is socketed with cushion cover 633.In the present embodiment, tailing axle 631 and main shaft 642 are coaxial, 4 high accuracy After 60*95*18 single row angular contact ball bearing c629 assembling, preload EL will also reach 100N.Bearing group inner chamber fills excellent High speed grease.Whole knife rest tailstock modular construction is quite compact, and rigidity is high.

Cage plate 632 is equiped with the knife rest tailstock body 630, and the right-hand member on tailing axle 31 is fastened with left positioning sleeve 634, cage plate 632 are fixed on knife rest tailstock body 630 with 6 M6*20 soket head cap screws, and left positioning sleeve 634 is with 6 M5*16 soket head cap screws It is fastened on tailing axle 631.Whole knife rest tailstock modular construction is quite compact, and rigidity is high.

The cutter changing Account Dept includes little axle 661, handling 601, passing through a pair of gear pair on little axle 661 The screw mandrel 612 that 660 engagement is connected with little axle 661, is handled between 601 and little axle 661 and is positioned by 5*12 straight pin 625, handss Just energy drive screw 612 is rotated handle 601, and the gear being installed together with little axle 661 in the gear pair 660 passes through 6*12 Flat key b659 is fixed on little axle 661, and little axle 661 is supported by the single-groove grooved ball bearing 657 of 2 17*40*12, deep-groove ball Set 658 is socketed with little axle between bearing 657 and gear pair 660.Coordinate on the screw mandrel 612 and feed screw nut 616 be installed, And feed screw nut 616 is fixed on knife rest tailstock body 630.Casing 613 is set with the screw mandrel 612, and casing 613 passes through 9 Individual M5*16 soket head cap screw is fastened on feed screw nut 616；The right-hand member of the feed screw nut 616 passes through M8*25 soket head cap screw Back-up ring 6161 is installed.

The present invention is fixed on knife rest tailstock body 630 due to feed screw nut 616,630 whole part of knife rest tailstock body with 601 shakes are handled, and realizes moving left and right, be easy to hobboing cutter to install.

Guaranteed knife rest tailstock body 630 is installed on the screw mandrel 612 move but 13 groups of disk springs not producing loosening 611.630 end of knife rest tailstock body is fastened and fixed set 606, the left end of fixed cover 606 by 5 M5*16 soket head cap screws Fixing upper shield 602 is locked with by 6 M5*12 soket head cap screws, the screw mandrel is provided with bearing at 612 left part shaft shoulder position, And bearing passes through lower axle board 609,610 clamping and positioning of upper shaft board, the upper shaft board 610 and 13 groups of 50*25.4*3 dishes Spring 611 offsets, and the minimum pretightning force of 13 groups of disk springs 611 is 13000N, on screw mandrel 612 and positioned at left part lower axle board 609 left end is provided with hexagonal block 605, and 612 left end of screw mandrel connects back-up ring 604, and hexagonal block by M6*20 soket head cap screw 605 are clamped between back-up ring 604 and lower axle board 609, and hexagonal block 605 is arranged on screw mandrel 612 by 2 6*20 flat key c608 On.

On the hexagonal block 605, pulling shaft 650 is provided with by 6*46 flat key a648, the end of pulling shaft 650 is connected with little drawing Handss 656, are socketed with flange form fixed cover 652 outside pulling shaft 650, the end of flange form fixed cover 652 is by hexagonal in 4 M6*12 Spiral shell 4 is fastened with tegillum 655, is equiped between the shaft shoulder on the pulling shaft 650 and positioned at pulling shaft 650 and tegillum 655Spring 653, in order to ensure that knife rest tailstock body 630 is no longer shifted over after hand locking knife bar, just by drawing Axle 650 is positioned in any plane of hexagonal block 605 under the effect of spring 653 to realize.

It is an integrated dynamic hobboing cutter clamping system that system changed by the whole hobboing cutter of the present invention, simple to operate, safe and reliable, The time used by a hobboing cutter is changed less than 30 seconds.

1FT6044 servomotor 662 and the servomotor 662 that knife portion includes to be installed on tool-post structure 614 altered by the knife rest The ball screw being connected by XLJ-19/19 elastic coupling 676 pays 680, and the ball screw is paid on 680 and is equiped with 35* 80*35 double-row angular contact ball bearing d664 is supported, and the outer ring of thrust ball bearing d664 is mounted on gland 677, and presses Set 677 is installed on tool-post structure 614 with 4 M8*25 soket head cap screws；The ball screw is paid in 680 screw mandrel portion and is fastened There is the double nut 663 of M35*1.5 position, fastens, with double nut 663, the screw portion that positioning ball screw pays 680, and ball screw is paid Coordinate on 680 and feed screw nut is installed, feed screw nut is fastened on fixed block 679 by 6 M8*55 soket head cap screws, fixing Block 679 is fastened on the sliding carriage 619 in sliding carriage portion.

The ball screw is paid 680 end and is fastened with by M8*30 soket head cap screw and spring washer 673Back-up ring 672, spring washer 673 Wei Yu soket head cap screw and back-up ring 672 between, and ball screw pay 680 right part be set with rubber gear 671 are enclosed, and rubber back-up ring 671 is contacted with back-up ring 672.

Feed screw nut's nut that the ball screw is paid is fastened on fixed block 679 by 6 M8*55 soket head cap screws, Fixed block 679 passes through 2Straight pin 669 and 4 M8*20 soket head cap screws are fastened on sliding carriage 619, constitute pole Short alters knife driving-chain.

High-speed main spindle motor 617 drives main shaft 642 to turn round, and driving-chain is ultrashort, and rotating speed so makes to be clipped in up to 10000rpm Hobboing cutter rotation between tailing axle 631 and main shaft 642；1FT6044 servomotor 662 is by the direct drive rolling of elastic coupling 676 Ballscrew pays 680 rotations, makes feed screw nut promote sliding carriage part to move left and right, and servomotor 662 adopts absolute coding Device and closed loop control, alter knife transmission accuracy and reach 1*10^-Mm, so adjusts.While by handling the little axle of 601 drives during tool changing 661 rotate, and in the presence of gear pair 660, rotate screw mandrel 612, make feed screw nut 616 carry movable knife rack tailstock body 630 or so Mobile, it is easy to replacing and the installation of hobboing cutter.

The present invention adopts oil cooling cutter wet type gear hobbing.Or adopt air cooling Dry gear hobbing, less than HRC50 DEG C middle hard gear-face Directly process after fire；Or HRC60 DEG C high Hardened gear face slightly boiling hot process after using secondary accurate to the essence rolling of knife technology, to scrape generation mill, High accuracy is processed.Tool spindle loads onto CBN emery wheel, can carry out roll flute processing.

The present invention at a high speed, high accuracy processing straight-tooth, helical teeth, roller gear and worm gear etc..Clamped one time, carries out gear hobbing and falls Angle or chamfered edge Combined machining.Using hobbing gang tool, clamped one time Hobbing successively, milling spline, keyway etc.；Install CBN emery wheel carries out continuous roll flute.

Up to 10000 revs/min of machine tool rotating speed of the present invention, 1000 revs/min of lower index axle, cutting speed up to More than 300m/ divides, 5 grades of the accuracy of gear (GB/T10095-2008), below tooth-face roughness Ra0.8 is processed.

This machine tool control system can adopt Siemens or BOSCH-REXROTH digital control system, be seven Shaft and NC Machining Test, six linkage.Lathe Driving-chain is ultrashort, particularly knife rest cutter shaft and the super μ level of lower index spindle motor direct drive gapless driving rotating accuracy.

Above-described embodiment is the specific descriptions carried out by the present invention, simply the present invention is further described, it is impossible to manage Solve as limiting the scope of the present invention, it is nonessential that those skilled in the art makes some according to the content of foregoing invention Modifications and adaptations are each fallen within protection scope of the present invention.

Claims (10)

1. a kind of chain digital control gear hobbing machine, it is characterised in that：Main frame is in vertical layout, and main frame includes lathe bed, base, slide plate, column, tail Seat, knife rest, workpiece, work piece holder and workbench, the column and the L-shaped rigid connection structure of lathe bed；The base, slide plate, Tailstock, knife rest are respectively installed on column, and on column, become Jiong shape to arrange；The right side of the base is connected with knife by overcoat Frame；Nut bracket on rear side of the base is paid nut with the ball screw on slide plate and is connected, and ball screw revolution just drives bottom Horizontal direction movement made by seat and knife rest；Realize the radial feed of lathe X-axis；The slide plate is vertically moved on column, Realize machine Z-axis vertical feed；The tailstock includes the pedestal on column that is locked, and longitudinal sliding motion on pedestal is equiped with top Sharp sliding assembly；The workbench is on lathe bed, and is provided with work piece holder on workbench, is positioned with work on work piece holder Part, and workpiece holds out against or unclamped by top on top sliding assembly；The indexing spindle of the knife rest is connected with the overcoat, Indexing spindle is driven by driving means and rotates, and with the hobboing cutter on movable knife rack, workpiece is cut.

2. a kind of chain digital control gear hobbing machine according to claim 1, it is characterised in that：The base is square base body, outward Put and be provided with the preset screw being installed together with knife rest.

3. a kind of chain digital control gear hobbing machine according to claim 2, it is characterised in that：The overcoat is tight with the leading portion of indexing spindle It is solidly connected；The back segment of the indexing spindle is supported using ball bearing a, and is fastened with master gear, and indexing spindle on indexing spindle Positioned by flange between master gear, and between flange and indexing spindle, be equiped with short set；Servomotor passes through decelerator band Dynamic indexing spindle revolution, so that blade carrier component is also and then turned round.

4. a kind of chain digital control gear hobbing machine according to claim 1, it is characterised in that：Top is fastened with the pedestal of the tailstock Seat, the pedestal is locked makes pedestal in suspended structure on column；Line slideway is longitudinally equiped with the pedestal, directly Top sliding assembly is installed on line guide rail；The top sliding assembly includes the slide on line slideway and activity peace Be mounted in slide with the top of high rotating accuracy；The top driving dress for driving ball screw rotation is installed on the footstock Put, coordinate on ball screw and ball nut is installed, the ball nut is fixed on the slide.

5. a kind of chain digital control gear hobbing machine according to claim 4, it is characterised in that：The centre driving device is included by watching Servomotor of the motor fixing seat on footstock is taken, the servomotor connects worm reduction gear, the master of worm reduction gear Axle is connected with ball screw by shaft coupling.

6. a kind of chain digital control gear hobbing machine according to claim 4, it is characterised in that：Bearing holder (housing, cover), institute are installed on the slide State bearing holder (housing, cover) inside and axle is provided with by ball bearing b, and axle sleeve is connected on described top outside；It is connected with below the bearing holder (housing, cover) Lower flange, and lower flange is fastened on slide；Protecting cover is installed with below the lower flange.

7. a kind of chain digital control gear hobbing machine according to claim 1, it is characterised in that：The workbench include workbench housing and The torque motor being installed on workbench housing, the rotor of the torque motor is fixed on main shaft, and the stator of torque motor is solid It is scheduled in terminal pad, and terminal pad is closely connected with workbench lower housing portion；The middle and upper part position of the workbench hull outside Place is provided with groove, is fastened with pad in groove, installs angled absolute encoder, and the measurement of angle absolute encoder on main shaft Head is located in groove, and the lower end of measurement head is passed through from pad.

8. a kind of chain digital control gear hobbing machine according to claim 7, it is characterised in that：The main shaft lower end is tightly cased with ball bearing c, And ball bearing c is in the hole of terminal pad, and fixed with circlip for hole a；The main shaft lower end is fastened with oil cylinder Between flange, and oil cylinder flange, circlip for hole a and ball bearing c, rotary seal ring is installed；The oil cylinder flange lower end is tight Intrinsic angling cylinder.

9. a kind of chain digital control gear hobbing machine according to claim 1, it is characterised in that：The knife rest includes tool holder body portion, knife Knife portion altered by frame slide plate portion, knife rest tailstock portion, cutter changing Account Dept and knife rest, and the tool holder body portion is installed in lathe base Put outward；The sliding carriage portion is slidably mounted in tool holder body portion, and knife rest tailstock portion is in tool holder body portion；Described Cutter changing Account Dept is in knife rest tailstock portion；The knife rest alters knife portion in sliding carriage portion.

10. a kind of chain digital control gear hobbing machine according to claim 9, it is characterised in that：The sliding carriage portion includes main at a high speed Spindle motor and sliding carriage, the rotor hot jacket of the high-speed main spindle motor is in the right-hand member of main shaft, and the stator of high-speed main spindle motor is tight Gu on rear cage；Cage together loads in the preset holes of sliding carriage together with the stator of high-speed main spindle motor afterwards, and with interior six Angle screw is fastened on the right side of sliding carriage；The knife rest tailstock portion includes knife rest tailstock body and tailing axle, outside the tailing axle It is socketed with thrust ball bearing c, and thrust ball bearing c loads in the hole of knife rest tailstock body, the left end of tailing axle and is located at thrust ball axle The left end of c is held by the flange positioning that is fastened on knife rest tailstock body, the right-hand member of tailing axle and the right-hand member set positioned at thrust ball bearing c It is connected to cushion cover；The cutter changing Account Dept include little axle, handling on the little axle, by the engagement of a pair of gear pair with The screw mandrel of little axle connection, coordinates on the screw mandrel and is provided with feed screw nut, and feed screw nut is fixed on knife rest tailstock body；Described The ball wire that knife portion includes that the servomotor being installed on tool-post structure is connected by elastic coupling with servomotor altered by knife rest Bar is paid, and the ball screw is paid and is equiped with thrust ball bearing d and is supported, and the outer ring of thrust ball bearing d is mounted on gland, And gland is installed on tool-post structure；The screw mandrel portion that the ball screw is paid tightens fixed bit double nut, and ball screw is paid and joined Conjunction is provided with feed screw nut, and feed screw nut is fastened on fixed block, and fixed block is fastened on the sliding carriage in sliding carriage portion.