CN102079047B - High-speed and high-accuracy driving device for rotary table - Google Patents

High-speed and high-accuracy driving device for rotary table Download PDF

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Publication number
CN102079047B
CN102079047B CN201010573781A CN201010573781A CN102079047B CN 102079047 B CN102079047 B CN 102079047B CN 201010573781 A CN201010573781 A CN 201010573781A CN 201010573781 A CN201010573781 A CN 201010573781A CN 102079047 B CN102079047 B CN 102079047B
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fixedly connected
driving
casing
base
main
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CN102079047A (en
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汤鹏
车忠伟
张建州
类成龙
郑洪森
魏洪森
王小姣
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Weihai Huadong Automation Co Ltd
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Weihai Huadong Automation Co Ltd
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Abstract

The invention discloses a high-speed and high-accuracy driving device for a rotary table. The driving device provided by the invention is provided with a work table, a base and a control system, wherein the lower end of the work table is provided with a driving gear ring. The driving device provided by the invention is characterized in that the base is provided with two rotary driving devices; the center of the work table is provided with an angle encoder; each rotary driving device comprises a box body, a servo motor, a regulation seat, a main driving gear, a driving shaft, a drive sprocket and a driven sprocket; the angle encoder is connected with the control system; the box body is fixed on the base; one end of the box body is provided with a positioning sleeve, and the other end of the box body is provided with the regulation seat; the inner wall of the positioning sleeve is fixedly connected with the driving shaft through a bearing, and the outer wall of the positioning sleeve is fixedly connected with the driven sprocket; the driven sprocket is meshed with a synchronous inverted tooth chain; the upper end of the driving shaft is provided with the main driving gear, and the lower end of the driving shaft is fixedly connected with the driven sprocket through a positioning cover; the main driving gear is meshed with the driving gear ring; the upper end of the regulation seat is fixedly connected with the servo motor, and the lower end of the regulation seat is fixedly connected with the box body; the main shaft of the servo motor is fixedly connected with the inner wall of the regulation seat through a bearing; and the main shaft is provided with the drive sprocket, and the drive sprocket is meshed with the synchronous inverted tooth chain through a through groove. The driving device provided by the invention has the advantages of optimizing the gear, eliminating gaps, realizing the accurate graduation of the work table, and the like.

Description

High-precision rotary working-table drive unit at a high speed,
Technical field
The present invention relates to turning, milling class lathe, specifically a kind of turning, the high speed of milling class lathe, high-precision rotary working-table drive unit fall.
Background technology
Common vertical lathe rotary table drive unit generally is to drive reduction box by common DC motor to realize, carries out multi-stage gear in the reduction box and slows down, and the accuracy of gear is required height, complex manufacturing technology, and cost is high.The machinery crack method that disappears is adopted in the crack that disappears of gear more, the accuracy of gear is required high, and the gap adjustment is comparatively loaded down with trivial details, and effect is undesirable.Common electric machine is realized speed controlling through frequency conversion, can not realize precise speed control, also can't realize accurate calibration, and mode of operation is single.
Summary of the invention
The objective of the invention is to solve the deficiency of above-mentioned prior art, a kind of simplification reduction box is provided, reduces production costs, optimize gear clearance elimination, easy operating, be prone to cost control, realize high speed, the high-precision rotary working-table drive unit of the accurate calibration of workbench.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high speed, high-precision rotary working-table drive unit are provided with workbench, base and control system, and the workbench lower end is provided with the driving gear ring, it is characterized in that being provided with side by side on the base two cover device for revolving and driving; The workbench center is provided with angular encoder, and device for revolving and driving comprises casing, servomotor, adjustment seat, main driven wheel, driving shaft, drive sprocket and driven sprocket, and encoder is connected with the control system; Casing is fixed on the base, and casing one end is provided with positioning sleeve, and the other end is provided with the adjustment seat; The positioning sleeve inwall is fixedly connected with driving shaft through bearing, and outer wall is fixedly connected with driven sprocket, and driven sprocket is meshed with synchronizing jugged chain; The driving shaft upper end is provided with main driven wheel, and lid is fixedly connected with driven sprocket through the location in the lower end, and main driven wheel is meshed with the driving gear ring; Adjustment seat upper end is fixedly connected with servomotor, and the lower end is fixedly connected with casing, and a side is provided with groove; The servomotor main shaft is fixedly connected with adjustment seat inwall through bearing, and main shaft is provided with drive sprocket, and drive sprocket is meshed with synchronizing jugged chain through groove; When the turning pattern, the AC servo motor of a cover in the device for revolving and driving wherein is arranged to main motor, another set of servomotor is arranged to auxiliary-motor; Through electrical control, the power of two motors of stack is realized high pulling torque turning; During the milling pattern; When main motor drove, auxiliary-motor was braked processing, obtained preload force; Thereby realize the crack that disappears of main driven wheel and workbench gear ring; Through control AC servo motor rotating speed, carry out the control of full cut-off ring through the angular encoder on the workbench axle center again, thereby realize the accurate calibration of workbench.
The present invention can be provided with lowering or hoisting gear in the casing lower end, and lowering or hoisting gear is made up of screw rod, rotation set, block, quadric chain, hinge, positioning seat and anti-rotation backing plate, and screw rod is provided with rotation set; Screw rod one end is provided with block, and the other end passes the through hole that base is provided with and is fixedly connected with base through anti-rotation backing plate, is provided with two hinges between rotation set and the block; The hinge two ends are hinged with quadric chain respectively; The quadric chain upper end is fixedly connected with casing through positioning seat, and the lower end is fixedly connected with base through locating piece, rotates rotation set with spanner; Spacing between rotation set and the block becomes big or diminishes; Make two spacings between the hinge become big or diminish, impel device for revolving and driving to descend or rise, reach the effect of convenient adjustment height.
Casing is provided with the roll adjustment groove among the present invention, and the adjustment seat passes the roll adjustment groove and is fixedly connected with casing, is beneficial to adjust the tensile force of synchronizing jugged chain.
Driving shaft among the present invention is a splined shaft, is beneficial to splined shaft and can transmits load and the power that exceeds the quata, and have the long life-span.
The invention has the beneficial effects as follows: reduction box adopts the synchronizing jugged chain kind of drive, and stable drive is reliable, simple in structure, thereby simplifies the design and fabrication of heavy, complicated gear reduction box, reduces production costs; Through AC Servo Motor Control, can realize that workbench carries out uniform rotation with arbitrary speed in allowing the range of speeds, be convenient to carry out screw thread processing etc.; This device adopts the electric slot sytem that disappears of bi-motor, and easy and simple to handle, the crack that disappears is effective, and is less demanding to the accuracy of gear, and repetitive positioning accuracy is high, and cost is easy to control, and two motors can drive simultaneously when needing high pulling torque to quicken; This device also adopts the control of full cut-off ring, realizes the accurate calibration of workbench.
Description of drawings
Fig. 1 is a layout structure sketch map of the present invention.
Fig. 2 is a structural representation of the present invention.
Reference numeral: 1. servomotor, 2. adjustment seat, 3. drive sprocket, 4. synchronizing jugged chain, 5. casing, 6. driven sprocket; 7. driving shaft, 8. main driven wheel, 9. gear ring, 10. workbench, 11. encoders, 12. rotation sets; 13. quadric chain, 14. screw rods, 15. locating pieces, 16. anti-rotation backing plates, 17. bases, 18. workbench; 19. block, 20. positioning sleeves, 21. device for revolving and driving, 22. hinges, 23. positioning seats.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified:
A kind of high speed, high-precision rotary working-table drive unit are provided with workbench 1, base 17 and control system, and workbench 10 lower ends are provided with and drive gear ring 9; Base 17 upper ends are provided with workbench 18, it is characterized in that being provided with side by side on the base 17 two cover device for revolving and driving 21, and workbench 10 centers are provided with angular encoder 11; Device for revolving and driving 21 comprises casing 5, servomotor 1, adjustment seat 2, main driven wheel 3, driving shaft 7, drive sprocket 3 and driven sprocket 6, and encoder 11 is connected with the control system, and casing 5 is fixed on the base 17; Casing 5 one ends are provided with positioning sleeve 20, and the other end is provided with adjustment seat 2, and positioning sleeve 20 inwalls are fixedly connected with driving shaft 7 through bearing; Outer wall is fixedly connected with driven sprocket 6, and driven sprocket 6 is meshed with synchronizing jugged chain 4, and driving shaft 7 upper ends are provided with main driven wheel 8; Lid is fixedly connected with driven sprocket 6 through the location in the lower end, and main driven wheel 8 is meshed with driving gear ring 9, and adjustment seat 2 upper ends are fixedly connected with servomotor 1; The lower end is fixedly connected with casing 5, and a side is provided with groove, and servomotor 1 main shaft is fixedly connected with adjustment seat 2 inwalls through bearing; Main shaft is provided with drive sprocket 3, and drive sprocket 3 is meshed with synchronizing jugged chain 4 through groove, when the turning pattern; The AC servo motor of a cover in the device for revolving and driving wherein is arranged to main motor, and another set of servomotor is arranged to auxiliary-motor, through electrical control; The power of two motors of stack is realized high pulling torque turning; During the milling pattern; When main motor drove, auxiliary-motor was braked processing, obtained preload force; Thereby realize the crack that disappears of main driven wheel 8 and workbench gear ring 9; Through control AC servo motor rotating speed, carry out the control of full cut-off ring through the angular encoder on workbench 10 axle center 11 again, thereby realize the accurate calibration of workbench.
The present invention can be provided with lowering or hoisting gear in casing 5 lower ends, and lowering or hoisting gear is made up of screw rod 14, rotation set 12, block 19, quadric chain 13, hinge 22, positioning seat 23 and anti-rotation backing plate 16, and screw rod 14 is provided with rotation set 12; Screw rod 14 1 ends are provided with block 19, and the other end passes the through hole that base 17 is provided with and is fixedly connected with base 17 through anti-rotation backing plate 16, is provided with two hinges 22 between rotation set 12 and the block 19; Hinge 22 two ends are hinged with quadric chain 13 respectively, and quadric chain is four connecting rod parallel-crank mechanisms, and quadric chain 13 upper ends are fixedly connected with casing 5 through positioning seat 23; The lower end is fixedly connected with base 17 through locating piece 15; Rotate rotation set 12 with spanner, the spacing between rotation set 12 and the block 19 becomes big or diminishes, and quadric chain 13 diagonal change; Driving quadric chain 13 upper ends rises or descends; Impel device for revolving and driving to descend or rise, reach the effect of convenient adjustment height, adjust to proper height after; Through the fixing rotation set of anti-rotation backing plate 16, prevent the adjusted height of rotation set 12 rotation influences.
Casing 5 is provided with the roll adjustment groove among the present invention, and adjustment seat 2 passes the roll adjustment groove and is fixedly connected with casing 5, is beneficial to adjust the tensile force of synchronizing jugged chain 4.
Driving shaft 7 among the present invention is a splined shaft, is beneficial to splined shaft 7 and can transmits load and the power that exceeds the quata, and have the long life-span.
Main driven wheel 8 among the present invention adopts the helical gear that is meshed with driving gear ring 9, and it is big to reach bearing capacity, stable drive, and impact, noise and vibration greatly reduce, the effect of long service life.
The present invention can be arranged to car, two kinds of control modes of milling, during the turning pattern, the AC servo motor of a cover in the device for revolving and driving wherein is arranged to main motor; Adjacent another set of AC servo motor is arranged to auxiliary-motor, through electrical control, and the power of two motors of stack; Two cover device for revolving and driving driven in common; Make drive sprocket drive driven sprocket through synchronizing jugged chain and rotate, driven sprocket drives the main driven wheel rotation of driving shaft upper end, and then drives 9 rotations of driving gear ring; Drive gear ring 9 and drive workbench 10 rotations, realize high pulling torque turning; During the milling pattern; On main motor and auxiliary-motor, add torque in the opposite direction, make it always be in the state that keeps tension force, thereby obtain preload force; Realize the crack that disappears of main driven wheel 8 and workbench gear ring 9; Through control AC servo motor rotating speed, carry out the control of full cut-off ring through the angular encoder on workbench 10 axle center 11 again, thereby realize the accurate calibration of workbench.
The invention has the beneficial effects as follows: reduction box adopts the synchronizing jugged chain kind of drive, and stable drive is reliable, simple in structure, thereby simplifies the design and fabrication of heavy, complicated gear reduction box, reduces production costs; Through AC Servo Motor Control, can realize that workbench carries out uniform rotation with arbitrary speed in allowing the range of speeds, be convenient to carry out screw thread processing etc.; This device adopts the electric slot sytem that disappears of bi-motor, and easy and simple to handle, the crack that disappears is effective, and is less demanding to the accuracy of gear, and repetitive positioning accuracy is high, and cost is easy to control, and two motors can drive simultaneously when needing high pulling torque to quicken; This device also adopts the control of full cut-off ring, realizes the accurate calibration of workbench.

Claims (1)

1. a high speed, high-precision rotary working-table drive unit are provided with workbench, base and control system, and the workbench lower end is provided with the driving gear ring, it is characterized in that being provided with side by side on the base two cover device for revolving and driving; The workbench center is provided with angular encoder, and device for revolving and driving comprises casing, servomotor, adjustment seat, main driven wheel, driving shaft, drive sprocket and driven sprocket, and encoder is connected with the control system; Casing is fixed on the base, and the casing lower end is provided with lowering or hoisting gear, and casing one end is provided with positioning sleeve; The other end is provided with the adjustment seat, and casing is provided with the roll adjustment groove, and the positioning sleeve inwall is fixedly connected with driving shaft through bearing; Outer wall is fixedly connected with driven sprocket, and driven sprocket is meshed with synchronizing jugged chain, and the driving shaft upper end is provided with main driven wheel; Lid is fixedly connected with driven sprocket through the location in the lower end, and main driven wheel is meshed with driving gear ring, and the adjustment seat passes the roll adjustment groove and is fixedly connected with casing; Adjustment seat upper end is fixedly connected with servomotor, and the lower end is fixedly connected with casing, and a side is provided with groove; The servomotor main shaft is fixedly connected with adjustment seat inwall through bearing, and main shaft is provided with drive sprocket, and drive sprocket is meshed with synchronizing jugged chain through groove; Lowering or hoisting gear is made up of screw rod, rotation set, block, quadric chain, hinge, positioning seat and anti-rotation backing plate, and screw rod is provided with rotation set, and screw rod one end is provided with block; The other end passes the through hole that base is provided with and is fixedly connected with base through anti-rotation backing plate, is provided with two hinges between rotation set and the block, and the hinge two ends are hinged with quadric chain respectively; The quadric chain upper end is fixedly connected with casing through positioning seat, and the lower end is fixedly connected with base through locating piece, and driving shaft is a splined shaft.
CN201010573781A 2010-12-06 2010-12-06 High-speed and high-accuracy driving device for rotary table Active CN102079047B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105538091B (en) * 2015-12-03 2018-03-30 安徽普伦智能装备有限公司 A kind of brake disc grinding drive device
CN114055189A (en) * 2021-12-07 2022-02-18 黑龙江省齐一智能机床研究院有限公司 Novel high-speed vertical turnning and milling revolving stage is with two servo principal and subordinate synchronous control structures
CN114178872B (en) * 2021-12-08 2024-04-23 江苏特贝尔精密机械科技有限公司 Numerical control rotary table

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CN101450445A (en) * 2007-12-07 2009-06-10 曹华兴 Heavy rotary table and rotary motion control method thereof
CN201579600U (en) * 2009-12-25 2010-09-15 林伍 Rotary worktable for numerical control machine
CN201586868U (en) * 2009-12-29 2010-09-22 芜湖日升重型机床有限公司 Digital display rotary workbench
CN201881153U (en) * 2010-12-06 2011-06-29 威海华东数控股份有限公司 High-speed and high-precision rotary table driving device

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US5882158A (en) * 1996-05-31 1999-03-16 Deckel Maho Gmbh Drive assembly

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Publication number Priority date Publication date Assignee Title
CN101450445A (en) * 2007-12-07 2009-06-10 曹华兴 Heavy rotary table and rotary motion control method thereof
CN201579600U (en) * 2009-12-25 2010-09-15 林伍 Rotary worktable for numerical control machine
CN201586868U (en) * 2009-12-29 2010-09-22 芜湖日升重型机床有限公司 Digital display rotary workbench
CN201881153U (en) * 2010-12-06 2011-06-29 威海华东数控股份有限公司 High-speed and high-precision rotary table driving device

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