CN106926055A - A kind of C-axis scale division device for vertical lathe - Google Patents

A kind of C-axis scale division device for vertical lathe Download PDF

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Publication number
CN106926055A
CN106926055A CN201710156759.2A CN201710156759A CN106926055A CN 106926055 A CN106926055 A CN 106926055A CN 201710156759 A CN201710156759 A CN 201710156759A CN 106926055 A CN106926055 A CN 106926055A
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CN
China
Prior art keywords
chain wheel
toothed disc
clearance elimination
toothed
gear
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Granted
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CN201710156759.2A
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CN106926055B (en
Inventor
刘永荣
郭煜
魏峰
刘春花
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Ningbo Haitian Precision Machinery Co Ltd
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Ningbo Haitian Precision Machinery Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02Indexing equipment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

C-axis scale division device for vertical lathe disclosed by the invention includes servomotor, transmission mechanism, splined shaft, chain wheel under end-toothed disc, end-toothed disc upper chain wheel, clearance elimination gear and casing, clearance elimination gear, end-toothed disc upper chain wheel, chain wheel and transmission mechanism are arranged in casing up and down under end-toothed disc, the output end of servomotor is connected with the input of transmission mechanism, splined shaft is arranged on the output end of transmission mechanism, chain wheel is set on splined shaft under end-toothed disc, chain wheel is located at the underface of end-toothed disc upper chain wheel under end-toothed disc, the C s functions for driving chain wheel under end-toothed disc to move up and down are provided with end-toothed disc on the outside of chain wheel and switch oil cylinder, end-toothed disc upper chain wheel is fixedly connected with clearance elimination gear, casing is fixed on bed piece, clearance elimination gear is meshed with bull gear, bull gear is arranged on the bottom of platen;The indexing means simple structure, assembling is compact, easy to, controllability is good, can quickly realize the function switching of vertical lathe C axles, it is ensured that C-axis scale division precision.

Description

A kind of C-axis scale division device for vertical lathe
Technical field
The present invention relates to a kind of indexing means, specifically a kind of C-axis scale division device for vertical lathe.
Background technology
In numerical-control turn-milling machining center, C axles carry out interpolation with the linkage of other feed shafts, are capable of achieving the accurate fixed of main shaft Position.In clamped one time, multiple operation, Composite processing are capable of achieving, improve the machining accuracy of processing efficiency and large complicated part. The design of lathe C axle feed systems is to improve the key technology of part processing precision.In high precision, high rigidity, compact conformation, big torsion Square, transmission efficiency are the indispensable conditions of milling-lathe machining center C shaft transmission systems.The primary structure of current C-axis scale division device has: Dual-Servo Motor driving structure, Double-gear anti-backlash structure, double helical pitch turbine and worm gap-eliminating structures etc..Existing C-axis scale division device There is certain deficiency:Dual-Servo Motor driving structure high cost, overall structure is larger;Double-gear anti-backlash structure and assembler Skill is complicated, follow-up maintenance inconvenience;Double helical pitch turbine and worm gap-eliminating structures are equally complex, and precision stability is bad.
The content of the invention
The technical problems to be solved by the invention are:In view of the shortcomings of the prior art, there is provided a kind of C for vertical lathe Axle indexing means, the indexing means simple structure, is compact, easy to assembling, and controllability is good, can quickly realize vertical lathe C axles Function switching, it is ensured that C-axis scale division precision.
The present invention solve the technical scheme that is used of above-mentioned technical problem for:A kind of C-axis scale division dress for vertical lathe Put, including chain wheel, end-toothed disc upper chain wheel, clearance elimination gear and casing under servomotor, transmission mechanism, splined shaft, end-toothed disc, it is described Clearance elimination gear, end-toothed disc upper chain wheel, end-toothed disc under chain wheel and transmission mechanism be arranged in described casing up and down, described watches The output end for taking motor is connected with the input of described transmission mechanism, and described splined shaft is arranged on described transmission mechanism Output end, chain wheel is set on described splined shaft under described end-toothed disc, and chain wheel is located at described end under described end-toothed disc The underface of fluted disc upper chain wheel, is provided with the outside of chain wheel under described end-toothed disc for driving chain wheel under described end-toothed disc The C s functions switching oil cylinder of lower movement, described end-toothed disc upper chain wheel is fixedly connected with described clearance elimination gear, described casing It is fixed on bed piece, described clearance elimination gear is meshed with bull gear, described bull gear is arranged on platen Bottom.
C-axis scale division device for vertical lathe disclosed by the invention, simple structure, be compact, easy to assembling, controllability It is good, can quickly realize the function switching of vertical lathe C axles.C s function handoff procedures are:C s functions switching oil cylinder band moved end Moved on chain wheel under fluted disc after being engaged in place with end-toothed disc upper chain wheel, servomotor work, by transmission mechanism under end-toothed disc Chain wheel transmitting torque, drives end-toothed disc lower tooth disc spins, realizes C-axis scale division function;C s functions switching oil cylinder is driven under end-toothed disc Chain wheel is displaced downwardly to and is separated when in place with end-toothed disc upper chain wheel, and C-axis scale division function disconnects, and now, lathe is controllable clearance elimination gear Rotation, lathe normal work.In above-mentioned C s functions break-make handoff procedure, the movement of chain wheel is carried out along splined shaft under end-toothed disc, and The movement of chain wheel is driven by C s functions switching oil cylinder under end-toothed disc.
Due to the limitation of tooth form, it is possible that crest tooth shows when chain wheel is engaged with end-toothed disc upper chain wheel under end-toothed disc As this will cause the abrasion and incorrect engagement of chain wheel and end-toothed disc upper chain wheel under end-toothed disc, cause C-axis scale division error to increase Greatly, or even the serious consequence such as cannot index, clearance elimination gear can be eliminated effectively under end-toothed disc upper chain wheel and end-toothed disc in the present invention Backlash between chain wheel, it is ensured that C-axis scale division precision.
Described transmission mechanism includes the first toothed wheel, the second toothed wheel, tooth form synchronous belt harmonic decelerator, described First toothed wheel is arranged on the output end of described servomotor, and the second described toothed wheel is arranged on described harmonic speed reducer Input, described tooth form synchronous belt connects both around being located in described the first toothed wheel and the second described toothed wheel Connect, described splined shaft is arranged on the output end of described harmonic speed reducer, described C s functions switching oil cylinder include piston, Upper oil cavitie and lower oil cavitie, described piston are respectively enclosed to described upper oil cavitie and described lower oil cavitie with described casing, described Casing side wall on be provided with the upper hydraulic fluid port communicated with described upper oil cavitie and the lower hydraulic fluid port communicated with described lower oil cavitie, The bulge loop of convex is wholely set on the inside of described piston, two thrust ball axles are cased with described end-toothed disc on the outside of chain wheel Hold, the thrust ball bearing described in two is separated up and down by described bulge loop, under described end-toothed disc the top of chain wheel be provided with The relative flange portion in thrust ball bearing position described in two, the bottom of chain wheel is fixed with and is pushed away with described under described end-toothed disc The relative baffle ring in power ball bearing position, thrust ball bearing and described bulge loop described in two are limited in described flange portion and institute Between the baffle ring stated.By harmonic speed reducer and toothed synchronous V belt translation, compact conformation, high transmission accuracy, big biography is obtained in that Dynamic ratio and high pulling torque.Through lower hydraulic fluid port to hydraulic oil is passed through in lower oil cavitie after, servomotor low speed rotation, under piston driving end-toothed disc Chain wheel is slowly upper to be moved, when above move to engage in place with end-toothed disc upper chain wheel after, servomotor is rotated with rated speed, by being driven Mechanism drives end-toothed disc lower tooth disc spins to chain wheel transmitting torque under end-toothed disc, realizes C-axis scale division function;Lower oil cavitie oil return, warp After being passed through hydraulic oil in the upper upward oil pocket of hydraulic fluid port, piston is moved down, and promotes end-toothed disc lower tooth disk to move down and divide with end-toothed disc upper chain wheel From in place, C-axis scale division function disconnects, and now, lathe is controllable clearance elimination gear rotation, lathe normal work.
Described casing includes upper box and lower box, and the lower end of described upper box is set in the upper of described lower box End, described upper oil cavitie surrounds by described piston and described upper box, and described lower oil cavitie is by described piston, described Upper box and described lower box are surrounded, and described harmonic speed reducer is arranged on described lower box.Upper box and lower box Setting, be easy to the assembling and maintenance of device.
The upper end of described piston is provided with induction part, is provided with and described induction part phase on the side wall of described casing First proximity switch and the second proximity switch of adaptation, move on chain wheel under piston driving end-toothed disc and are engaged with end-toothed disc upper chain wheel When in place, the first proximity switch is transmitted, servomotor work, realizes C-axis scale division function;Chain wheel is moved down under piston driving end-toothed disc To being separated when in place with end-toothed disc upper chain wheel, the second proximity switch is transmitted, and servomotor is stopped, and C-axis scale division function disconnects.
The first described proximity switch and the second proximity switch are high accuracy proximity switch, and described harmonic speed reducer is Kazakhstan The CSF-65-100-2UH type high accuracy harmonic speed reducers of Mo Nake companies production.
Described clearance elimination gear includes the first clearance elimination gear and the second clearance elimination gear setting up and down, and described first disappears gap Gear and the second clearance elimination gear are meshed with described bull gear simultaneously, and the bottom of the first described clearance elimination gear has been wholely set Connecting shaft, described connecting shaft is stretched into described casing through the second described clearance elimination gear, the outside of described connecting shaft Axle sleeve is arranged with, cylinder roller bearing and angular contact ball axle setting up and down is installed between described axle sleeve and described casing Hold, the second described clearance elimination gear is fixed on the top of described axle sleeve, described end-toothed disc upper chain wheel is fixed on described axle The bottom of set, the lower end of described connecting shaft is provided with the breach that Open Side Down, and the upper end of described end-toothed disc upper chain wheel is fixed Have a locating dowel being adapted with described breach, described locating dowel is stretched into described breach, described locating dowel with it is described Connecting shaft between sealing ring is installed, described locating dowel surrounds the gap oil pocket that disappears with described end-toothed disc upper chain wheel, described The oil duct communicated with the described gap oil pocket that disappears is offered on first clearance elimination gear, the upper end of described oil duct is connected and installed with rotation Joint.First clearance elimination gear, the second clearance elimination gear and the gap oil pocket that disappears constitute hydraulic pressure adjust automatically gap-eliminating structure, lathe normal work During, to keeping being passed through hydraulic oil in the gap oil pocket that disappears, impose lasting thrust to the first clearance elimination gear to eliminate gear drive It is middle to reach automatic compensation effect because of the gap of abrasion generation, realize automatic anti-backlash, it can be ensured that gear-driven precision, and precision Retentivity is good.And when lathe is stopped, without oil pressure in the gap that disappears oil pocket.
The first described clearance elimination gear and the second clearance elimination gear are helical gears.
The bottom of described servomotor is fixed on a cover plate, and support is fixed with described bed piece, described Transverse slat is fixed with support, described cover plate is fixed by screws on described transverse slat.By adjusting cover plate on transverse slat Installation site, can be adjusted to the installation site of servomotor, and then adjust the rate of tension of tooth form synchronous belt.
Compared with prior art, the advantage of the invention is that:C-axis scale division dress for vertical lathe disclosed by the invention Put, simple structure, be compact, easy to assembling, controllability is good, by movement of the chain wheel under end-toothed disc on splined shaft, you can quick The function switching of vertical lathe C axles is realized, it can realize Large-torsion transmisson, the high pulling torque being particularly suited in heavy machine tool is passed It is dynamic, additionally, the clearance elimination gear in the C-axis scale division device can effectively eliminate the tooth between chain wheel under end-toothed disc upper chain wheel and end-toothed disc Gap, it is ensured that C-axis scale division precision.
Brief description of the drawings
Fig. 1 is the structural representation of the C-axis scale division device for vertical lathe of embodiment;
Fig. 2 is enlarged drawing at A in Fig. 1;
Fig. 3 is the B after uncapping in Fig. 1 to zoomed-in view;
Fig. 4 is C-C sectional views in Fig. 3;
Fig. 5 is the hydraulic schematic diagram of the C-axis scale division device for vertical lathe of embodiment.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
The C-axis scale division device for vertical lathe of embodiment 1, as illustrated, including servomotor 1, transmission mechanism, flower Chain wheel 41, end-toothed disc upper chain wheel 42, clearance elimination gear 7 and casing under key axle 3, end-toothed disc, clearance elimination gear 7, end-toothed disc upper chain wheel 42, Chain wheel 41 and transmission mechanism are arranged in casing up and down under end-toothed disc, the output end of servomotor 1 and the input of transmission mechanism It is connected, splined shaft 3 is arranged on the output end of transmission mechanism, and chain wheel 41 is set on splined shaft 3 under end-toothed disc, chain wheel under end-toothed disc 41 underfaces for being located at end-toothed disc upper chain wheel 42, the outside of chain wheel 41 is provided with for driving chain wheel 41 under end-toothed disc under end-toothed disc The C s functions switching oil cylinder for moving up and down, end-toothed disc upper chain wheel 42 is fixedly connected with clearance elimination gear 7, and casing is fixed on machine tool On body 91, clearance elimination gear 7 is meshed with bull gear 92, and bull gear 92 is arranged on the bottom of platen 93.
In embodiment 1, transmission mechanism includes that the first toothed wheel 21, the second toothed wheel 22, the harmonic of tooth form synchronous belt 23 subtract Fast device 24, the first toothed wheel 21 is arranged on the output end of servomotor 1, and the second toothed wheel 22 is arranged on the defeated of harmonic speed reducer 24 Enter end, tooth form synchronous belt 23 connects both around being located in the first toothed wheel 21 and the second toothed wheel 22, and splined shaft 3 is arranged on humorous The output end of ripple decelerator 24.
In embodiment 1, C s functions switching oil cylinder includes piston 61, upper oil cavitie 62 and lower oil cavitie 63, and casing includes upper box 51 and lower box 52, the lower end of upper box 51 is set in the upper end of lower box 52, and upper oil cavitie 62 is enclosed by piston 61 and upper box 51 Into lower oil cavitie 63 is surrounded by piston 61, upper box 51 and lower box 52, is provided with the side wall of upper box 51 and the phase of upper oil cavitie 62 Logical upper hydraulic fluid port 64 and the lower hydraulic fluid port 65 communicated with lower oil cavitie 63, harmonic speed reducer 24 are arranged on lower box 52.
In embodiment 1, the inner side of piston 61 is wholely set the bulge loop 66 of convex, and the outside of chain wheel 41 is cased with end-toothed disc Two thrust ball bearings 43, two thrust ball bearings 43 are separated by bulge loop about 66, and the top of chain wheel 41 is provided with end-toothed disc The flange portion 44 relative with two positions of thrust ball bearing 43, the bottom of chain wheel 41 is fixed with and thrust ball bearing 43 under end-toothed disc The relative baffle ring 67 in position, two thrust ball bearings 43 and bulge loop 66 are limited between flange portion 44 and baffle ring 67.
In embodiment 1, the upper end of piston 61 is provided with induction part 68, is provided with the side wall of upper box 51 and induction part 68 The first proximity switch 53 and the second proximity switch 54 being adapted, the first proximity switch 53 and the second proximity switch 54 are high accuracy Proximity switch, piston 61 to drive move on chain wheel 41 under end-toothed disc and engaged when in place with end-toothed disc upper chain wheel 42, and first close to opening Close 53 to transmit, servomotor 1 works, C axles are rotated, and realize C-axis scale division function;Chain wheel 41 is displaced downwardly under piston 61 drives end-toothed disc Separated when in place with end-toothed disc upper chain wheel 42, the second proximity switch 54 is transmitted, and servomotor 1 is stopped, C-axis scale division function is broken Open.
The C-axis scale division device for vertical lathe of embodiment 2, as illustrated, including servomotor 1, transmission mechanism, flower Chain wheel 41, end-toothed disc upper chain wheel 42, clearance elimination gear 7 and casing under key axle 3, end-toothed disc, clearance elimination gear 7, end-toothed disc upper chain wheel 42, Chain wheel 41 and transmission mechanism are arranged in casing up and down under end-toothed disc, the output end of servomotor 1 and the input of transmission mechanism It is connected, splined shaft 3 is arranged on the output end of transmission mechanism, and chain wheel 41 is set on splined shaft 3 under end-toothed disc, chain wheel under end-toothed disc 41 underfaces for being located at end-toothed disc upper chain wheel 42, the outside of chain wheel 41 is provided with for driving chain wheel 41 under end-toothed disc under end-toothed disc The C s functions switching oil cylinder for moving up and down, end-toothed disc upper chain wheel 42 is fixedly connected with clearance elimination gear 7, and casing is fixed on machine tool On body 91, clearance elimination gear 7 is meshed with bull gear 92, and bull gear 92 is arranged on the bottom of platen 93, servomotor 1 Bottom is fixed on a cover plate 94, and support 95 is fixed with bed piece 91, and transverse slat 96 is fixed with support 95, and cover plate 94 passes through Screw is fixed on transverse slat 96.
In embodiment 2, transmission mechanism includes that the first toothed wheel 21, the second toothed wheel 22, the harmonic of tooth form synchronous belt 23 subtract Fast device 24, the first toothed wheel 21 is arranged on the output end of servomotor 1, and the second toothed wheel 22 is arranged on the defeated of harmonic speed reducer 24 Enter end, tooth form synchronous belt 23 connects both around being located in the first toothed wheel 21 and the second toothed wheel 22, and splined shaft 3 is arranged on humorous The output end of ripple decelerator 24.
In embodiment 2, C s functions switching oil cylinder includes piston 61, upper oil cavitie 62 and lower oil cavitie 63, and casing includes upper box 51 and lower box 52, the lower end of upper box 51 is set in the upper end of lower box 52, and upper oil cavitie 62 is enclosed by piston 61 and upper box 51 Into lower oil cavitie 63 is surrounded by piston 61, upper box 51 and lower box 52, is provided with the side wall of upper box 51 and the phase of upper oil cavitie 62 Logical upper hydraulic fluid port 64 and the lower hydraulic fluid port 65 communicated with lower oil cavitie 63, harmonic speed reducer 24 are arranged on lower box 52, and harmonic wave subtracts Fast device 24 is the CSF-65-100-2UH type high accuracy harmonic speed reducer 24 of Harmer Na Ke companies production, and its gearratio is 100.
In embodiment 2, the inner side of piston 61 is wholely set the bulge loop 66 of convex, and the outside of chain wheel 41 is cased with end-toothed disc Two thrust ball bearings 43, two thrust ball bearings 43 are separated by bulge loop about 66, and the top of chain wheel 41 is provided with end-toothed disc The flange portion 44 relative with two positions of thrust ball bearing 43, the bottom of chain wheel 41 is fixed with and thrust ball bearing 43 under end-toothed disc The relative baffle ring 67 in position, two thrust ball bearings 43 and bulge loop 66 are limited between flange portion 44 and baffle ring 67.
In embodiment 2, the upper end of piston 61 is provided with induction part 68, is provided with the side wall of upper box 51 and induction part 68 The first proximity switch 53 and the second proximity switch 54 being adapted, the first proximity switch 53 and the second proximity switch 54 are high accuracy Proximity switch, piston 61 to drive move on chain wheel 41 under end-toothed disc and engaged when in place with end-toothed disc upper chain wheel 42, and first close to opening Close 53 to transmit, servomotor 1 works, C axles are rotated, and realize C-axis scale division function;Chain wheel 41 is displaced downwardly under piston 61 drives end-toothed disc Separated when in place with end-toothed disc upper chain wheel 42, the second proximity switch 54 is transmitted, and servomotor 1 is stopped, C-axis scale division function is broken Open.
In embodiment 2, clearance elimination gear 7 includes the first clearance elimination gear 71 and the second clearance elimination gear 72 setting up and down, first The clearance elimination gear 72 of clearance elimination gear 71 and second is helical gears, the first clearance elimination gear 71 and the second clearance elimination gear 72 simultaneously with Bull gear 92 is meshed, and the bottom of the first clearance elimination gear 71 has been wholely set connecting shaft 73, and connecting shaft 73 disappears gap tooth through second Wheel 72 is stretched into upper box 51, and the outside of connecting shaft 73 is arranged with axle sleeve 74, is provided between axle sleeve 74 and casing setting up and down Cylinder roller bearing 75 and angular contact ball bearing 76, the second clearance elimination gear 72 is fixed on the top of axle sleeve 74, end-toothed disc upper tooth Disk 42 is fixed on the bottom of axle sleeve 74, and the lower end of connecting shaft 73 is provided with the breach 77 that Open Side Down, end-toothed disc upper chain wheel 42 Upper end is fixed with the locating dowel 78 being adapted with breach 77, and locating dowel 78 is stretched into breach 77, locating dowel 78 and connecting shaft 73 it Between sealing ring 79 is installed, locating dowel 78 surrounds the gap oil pocket 69 that disappears with end-toothed disc upper chain wheel 42, is opened up on the first clearance elimination gear 71 The upper end for having the oil duct 81 communicated with the gap oil pocket 69 that disappears, oil duct 81 is connected and installed with swivel joint 82.
The C-axis scale division device for vertical lathe of embodiment 1 and embodiment 2, by chain wheel under end-toothed disc 41 in spline Movement on axle 3, you can the quick function switching for realizing vertical lathe C axles.C s function handoff procedures are:Through lower hydraulic fluid port 65 to After hydraulic oil being passed through in lower oil cavitie 63, the low speed rotation of servomotor 1, chain wheel 41 is slow along splined shaft 3 under piston 61 drives end-toothed disc It is slow upper to move, when above move to engaged in place with end-toothed disc upper chain wheel 42 when, the first proximity switch 53 is transmitted, and servomotor 1 is with normal Rotating speed rotates, and by transmission mechanism to the transmitting torque of chain wheel under end-toothed disc 41, chain wheel 41 rotates under driving end-toothed disc, realizes C axles Indexing function;The oil return of lower oil cavitie 63, through upper hydraulic fluid port 64 to hydraulic oil is passed through in upper oil cavitie 62 after, piston 61 is moved down, promote end tooth Chain wheel 41 is moved down along splined shaft 3 and separated with end-toothed disc upper chain wheel 42 under disk, and two chain wheels are separated when in place, the second proximity switch 54 Transmit, C-axis scale division function disconnects, now, lathe is that controllable clearance elimination gear 7 rotates, lathe normal work.
Due to the limitation of tooth form, it is possible that crest tooth when chain wheel 41 is engaged with end-toothed disc upper chain wheel 42 under end-toothed disc Phenomenon, this will cause the abrasion and incorrect engagement of chain wheel 41 and end-toothed disc upper chain wheel 42 under end-toothed disc, causes C-axis scale division Error increases, or even the serious consequence such as cannot index, and setting can automatically solve this and ask described in embodiment 2 after gap-eliminating structure Topic.The first clearance elimination gear 71, the second clearance elimination gear 72 in embodiment 2 and the gap oil pocket 69 that disappears constitute hydraulic pressure adjust automatically and disappear gap knot Structure, in lathe course of normal operation, to keeping being passed through hydraulic oil in the gap oil pocket 69 that disappears, imposes lasting to the first clearance elimination gear 71 Thrust eliminates the gap produced by abrasion in gear drive, reaches automatic compensation effect, realizes automatic anti-backlash, it can be ensured that tooth The precision of transmission is taken turns, and precision stability is good.And when lathe is stopped, without oil pressure in the gap that disappears oil pocket 69.
The above-mentioned C-axis scale division device for vertical lathe, simple structure, is compact, easy to assembling, and controllability is good, by end Movement of the chain wheel 41 on splined shaft 3 under fluted disc, you can the quick function switching for realizing vertical lathe C axles, it can realize big torsion Square is driven, and is particularly suited for the Large-torsion transmisson in heavy machine tool.With the C-axis scale division device for vertical lathe of embodiment 2 As a example by, the main diameter of its C axle is 260mm, and transmitting torque is fully met the need for driving heavy bench up to 3000Nm, There is the indexing means high accuracy positioning to act on, and its positioning precision to workbench has reached 5 ", repetitive positioning accuracy reaches 3″。
The hydraulic schematic diagram of the C-axis scale division device for vertical lathe of embodiment 2 is as shown in Figure 4.In Fig. 4,1 is first Solenoid directional control valve, 2 is pressure-reducing valve, and 3 is bidirectional hydraulic control check valve, and 4 is the second solenoid directional control valve, and 5 is electronic control pressure reducing valve, P, P1 mouthful Hydraulic oil is passed through by main unit hydraulic station.

Claims (8)

1. a kind of C-axis scale division device for vertical lathe, it is characterised in that including servomotor, transmission mechanism, splined shaft, end Chain wheel, end-toothed disc upper chain wheel, clearance elimination gear and casing under fluted disc, described clearance elimination gear, end-toothed disc upper chain wheel, end-toothed disc lower tooth Disk and transmission mechanism are arranged in described casing up and down, and the output end of described servomotor is defeated with described transmission mechanism Enter end to be connected, described splined shaft is arranged on the output end of described transmission mechanism, and chain wheel is set in institute under described end-toothed disc On the splined shaft stated, chain wheel is located at the underface of described end-toothed disc upper chain wheel under described end-toothed disc, under described end-toothed disc It is provided with the outside of chain wheel and switches oil cylinder, described end for the C s functions for driving chain wheel under described end-toothed disc to move up and down Fluted disc upper chain wheel is fixedly connected with described clearance elimination gear, and described casing is fixed on bed piece, described clearance elimination gear It is meshed with bull gear, described bull gear is arranged on the bottom of platen.
2. a kind of C-axis scale division device for vertical lathe according to claim 1, it is characterised in that described driver Structure includes the first toothed wheel, the second toothed wheel, tooth form synchronous belt harmonic decelerator, and the first described toothed wheel is arranged on described Servomotor output end, described the second toothed wheel is arranged on the input of described harmonic speed reducer, described tooth form Timing Belt connects both in the first toothed wheel and the second described toothed wheel described in being located at, and described splined shaft is arranged on The output end of described harmonic speed reducer, described C s functions switching oil cylinder includes piston, upper oil cavitie and lower oil cavitie, described Piston and described casing are respectively enclosed to described upper oil cavitie and described lower oil cavitie, be provided with the side wall of described casing with Upper hydraulic fluid port that described upper oil cavitie is communicated and the lower hydraulic fluid port communicated with described lower oil cavitie, the inner side of described piston integrally sets The bulge loop of convex is equipped with, two thrust ball bearings are cased with described end-toothed disc on the outside of chain wheel, the thrust ball axle described in two Hold and separated up and down by described bulge loop, the top of chain wheel is provided with and the thrust ball bearing position described in two under described end-toothed disc Relative flange portion is put, the bottom of chain wheel is fixed with the gear relative with described thrust ball bearing position under described end-toothed disc Ring, thrust ball bearing and described bulge loop described in two are limited between described flange portion and described baffle ring.
3. a kind of C-axis scale division device for vertical lathe according to claim 2, it is characterised in that described casing bag Upper box and lower box are included, the lower end of described upper box is set in the upper end of described lower box, and described upper oil cavitie is by institute The piston and described upper box stated are surrounded, and described lower oil cavitie is by described piston, described upper box and described nowel Body is surrounded, and described harmonic speed reducer is arranged on described lower box.
4. a kind of C-axis scale division device for vertical lathe according to claim 2, it is characterised in that described piston Upper end is provided with induction part, be provided with the side wall of described casing the first proximity switch for being adapted with described induction part and Second proximity switch, moves on chain wheel under piston driving end-toothed disc and is engaged when in place with end-toothed disc upper chain wheel, the first proximity switch Transmit, servomotor work, C axles are rotated, and realize C-axis scale division function;Chain wheel is displaced downwardly to and end-toothed disc under piston driving end-toothed disc Upper chain wheel is separated when in place, and the second proximity switch is transmitted, and servomotor is stopped, and C-axis scale division function disconnects.
5. a kind of C-axis scale division device for vertical lathe according to claim 4, it is characterised in that described first connects Nearly switch and the second proximity switch are high accuracy proximity switch, and described harmonic speed reducer is the CSF- of Harmer Na Ke companies production 65-100-2UH type high accuracy harmonic speed reducers.
6. a kind of C-axis scale division device for vertical lathe according to claim 1, it is characterised in that the described gap tooth that disappears Wheel includes the first clearance elimination gear and the second clearance elimination gear setting up and down, and described the first clearance elimination gear and the second clearance elimination gear is same When be meshed with described bull gear, the bottom of the first described clearance elimination gear has been wholely set connecting shaft, described connecting shaft Stretched into described casing through the second described clearance elimination gear, axle sleeve, described axle are arranged with the outside of described connecting shaft Cylinder roller bearing and angular contact ball bearing setting up and down be installed between set and described casing, described second disappears gap tooth Wheel is fixed on the top of described axle sleeve, and described end-toothed disc upper chain wheel is fixed on the bottom of described axle sleeve, described connection The lower end of axle is provided with the breach that Open Side Down, and the upper end of described end-toothed disc upper chain wheel is fixed with and is adapted with described breach Locating dowel, described locating dowel stretches into described breach, is provided between described locating dowel and described connecting shaft close Seal, described locating dowel surrounds the gap oil pocket that disappears with described end-toothed disc upper chain wheel, is offered on the first described clearance elimination gear The oil duct communicated with the described gap oil pocket that disappears, the upper end of described oil duct is connected and installed with swivel joint.
7. a kind of C-axis scale division device for vertical lathe according to claim 6, it is characterised in that described first disappears Gap gear and the second clearance elimination gear are helical gears.
8. a kind of C-axis scale division device for vertical lathe according to claim 1, it is characterised in that described servo electricity The bottom of machine is fixed on a cover plate, and support is fixed with described bed piece, and transverse slat is fixed with described support, described Cover plate be fixed by screws on described transverse slat.
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