CN101954596A - Numerical-control direct-drive turning-milling composite rotary working table - Google Patents

Numerical-control direct-drive turning-milling composite rotary working table Download PDF

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Publication number
CN101954596A
CN101954596A CN 201010502830 CN201010502830A CN101954596A CN 101954596 A CN101954596 A CN 101954596A CN 201010502830 CN201010502830 CN 201010502830 CN 201010502830 A CN201010502830 A CN 201010502830A CN 101954596 A CN101954596 A CN 101954596A
Authority
CN
China
Prior art keywords
bearing
ring
rotating shaft
turret base
work turning
Prior art date
Application number
CN 201010502830
Other languages
Chinese (zh)
Inventor
刘毅
何文
曲维康
刘青春
王家晓
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烟台环球机床附件集团有限公司
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Application filed by 烟台环球机床附件集团有限公司 filed Critical 烟台环球机床附件集团有限公司
Priority to CN 201010502830 priority Critical patent/CN101954596A/en
Publication of CN101954596A publication Critical patent/CN101954596A/en

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Abstract

The invention discloses a numerical-control direct-drive turning-milling composite rotary working table, which comprises a disc-shaped working rotary table, a hollow rotary table base and a bearing, wherein an outer ring of the bearing is fixedly connected with an inner wall of a cavity of the rotary table base; a rotating shaft of the working rotary table extends into an inner ring of the bearing; the working rotary table is fixedly connected with the inner ring; a motor stator, a motor rotor and a cylindrical hollow connecting sleeve which is used for fixing the motor rotor are also arranged in the cavity of the rotary table base; the motor stator is fixed on an inner wall of a cavity at the lower end of the rotating shaft along the axial direction of the rotating shaft; the upper end face of the connecting sleeve is fixedly connected with the lower end face of the rotating shaft; the motor rotor is fixed on an outer wall of the connecting sleeve; and a hollow part of the connecting sleeve is provided with an angle positioning device and a locking mechanism. The numerical-control direct-drive turning-milling composite rotary working table has the advantages of high efficiency, simple transmission structure and high radiating and sealing properties.

Description

A kind of numerical control directly drives to mill the composite revolving workbench
Technical field
The present invention relates to the digital control processing field, more particularly, relate to a kind of easy to operately, transmission mechanism is simple, and the numerical control that efficient is high directly drives to mill the composite revolving workbench.
Background technology
Equipment manufacture is the important foundation of the modernization of national defense, especially the long-term dependence on import of important process equipment of industry such as military project, Aeronautics and Astronautics high accuracy complex parts.At a high speed, high accuracy and Compound Machining, disposable to greatest extent clamping is finished the Surface Machining of all parts, is the characteristics of this class turnning and milling composite processing machine tool.It is that composite processing machine tool is the most desirable, the most important function parts that numerical control directly drives to mill the composite revolving workbench.
Numerical-control turn-milling composite revolving workbench, prior art are to utilize servo-control system to control, and adopt single, double servomotor by the reductor that a cover or many covers have multi-stage gear, gear ring or other modes workbench to be driven.
Now illustrate the two servomotors of wherein a kind of employing, the turnning and milling composite revolving workbench of two drive mechanisms, its working method is:
During one, as turning main shaft high speed rotary, at first milling transmission mechanism and workbench are thrown off, the transmission mechanism that will be used for turning simultaneously connects, and is generally the gearbox of the low speed reducing ratio of a cover, drive the workbench high speed rotary with servomotor then, carry out turning processing.This moment, workbench generally can only rotate, and can not carry out work such as calibration;
During two, as low speed milling index table, at first turning transmission mechanism and workbench are thrown off, the reducing gear that is used for milling by an other cover connects again, finishes the milling work of calibration or high pulling torque with the low-speed big driven by servomotor.
There is the mechanical transmission mechanism complexity in above-mentioned rotary table, efficient is low, the shortcoming that noise is big, it requires high to the equipment of the processing of drive disk assembly, heat treatment, assembly technology, easy to wear, difficult in maintenance etc., and, need high-power, big inertia servomotor improve its dynamic response capability to the requirement height of Electrical Control Technology.
If want to address these problems, most importantly change its frame for movement and the kind of drive, and preferred plan is directly to adopt the high speed high pulling torque directly to drive electric rotating machine direct connection workbench to solve.The numerical control direct drive turning rotating speed of table of present stage can not satisfy the requirement of turnning and milling composite revolving workbench, if want to improve rotating speed, most importantly improve the rated speed of direct driving motor itself, and rated speed is in case after improving, to also corresponding raisings of otherwise requirement such as the power consumption of motor, heat radiation, turntable parts of bearings, rotatory sealing parts.How addressing the above problem, and be designed to a kind of feasible scheme and form product, is the problem that the present invention need solve.
Summary of the invention
Technical problem to be solved by this invention provides a kind of efficient height, drive mechanism is simple, and the numerical control with good heat radiation and sealing property directly drives to mill the composite revolving workbench.
For achieving the above object, the invention provides technical scheme: a kind of numerical control directly drives to mill the composite revolving workbench, comprises circular Work turning table, and the middle part of its lower surface is provided with its vertically disposed rotating shaft; Turret base, its middle part is provided with the hollow circular cavity that matches with described rotating shaft, and the lower surface of described disc Work turning table places the upper surface of described turret base, and fits with its sealing; Bearing, its outer ring is fixedly connected with the cavity inner wall of described turret base, and the rotating shaft of described Work turning table stretches in the inner ring of described bearing, and described Work turning table is fixedly connected with its inner ring,
Also be provided with motor stator, rotor in the cavity of described turret base and be used for fixing the cylindrical hollow adapter sleeve of rotor, described motor stator is along on the cavity inner wall that is axially fixed at the rotating shaft lower end of described rotating shaft, the upper surface of described adapter sleeve is fixedly connected with the lower surface of described rotating shaft, described rotor is fixed on the outer wall of described adapter sleeve, after the motor stator energising, drive described rotor and Work turning table with the speed rotation; The hollow part of described adapter sleeve is provided with angle positioning device that is used for Work turning table corner location and the retaining mechanism that is used to lock described Work turning table.
Described angle positioning device comprises: angular encoder, encoder support and fixed support, and the upper end of described encoder support is fixedly connected with the upper end of described adapter sleeve, and its lower end is fixedly connected with the rotor of angular encoder; Described support bracket fastened upper end is fixedly connected with the stator of described angular encoder, and its lower end is fixedly connected with the hold-down support that is fixed in described turret base bottom, and described fixed support is with being provided with the annular gap between the described adapter sleeve.
Described retaining mechanism comprises: place the swelling cover in the described annular gap and be arranged at the hydraulic pressure runner of described fixed support inside, when the hydraulic pressure runner was squeezed into hydraulic oil, described swelling cover locked described adapter sleeve.
Described Work turning table is provided with the labyrinth seal of multiple tracks annular with the contact-making surface of described turret base, be provided with the air flow channel that an end is connected with the outside air compressor on the described turret base, the other end of described air flow channel is arranged at the middle part of described turret base upper surface.
Described turret base is provided with ring-shaped groove with the contact-making surface of described motor stator, and the water chiller in the same external world of described ring-shaped groove is formed the closed-loop path, is used for the cooling of motor stator.
Described bearing is a radial/axial combination roller bearing, is fixed with the temperature control sensor that is used for the sensing bearing temperature on the outer ring of described bearing.
Described temperature control sensor is the PTC temperature control sensor, and described PTC temperature control sensor is evenly equipped with three along described bearing outer ring
The present invention has following advantage:
1. have good dynamic property, owing to adopt direct drive mode, the conversion of no forms of motion between Work turning table and the motor, direct position is measured, and easily realizes high accuracy, the position fixing process of high dynamic performance.
2. operate steadily, directly drive the kind of drive owing to adopt, turntable operates steadily, and servo-actuated is good, and noise is low, thereby makes the processing of part be very easy to obtain high surface quality and the geometric accuracy of Geng Gao.
3. simple for structure, efficient height, zero back clearance
Because adopt the turning moment motor directly to connect workbench, intermediate connector has only parts of bearings, does not have reducing gears such as complicated gear, gear ring, simplify the structure greatly, improved transmission efficiency greatly, and motor direct connection workbench, back clearance is zero, does not need extra adjustment.
4. the low maintenance of fault rate is convenient
Because critical components such as bearing are all had the temperature control protective device, motor stator is provided with cooling device, these have guaranteed that all the turntable fault rate is low and for ease of maintenaince.
5. energy-conserving and environment-protective
Owing to adopted direct driving technologies, simplified frame for movement, there is not friction, improved efficient, significantly reduced the machining of making the workbench parts, and torque motor has the service life of overlength, to wear and tear extremely low, these characteristics have all been saved the energy and material greatly, have higher energy-conserving and environment-protective performance.
Description of drawings
Figure 1 shows that fundamental diagram of the present invention;
Figure 2 shows that the structure chart of composite revolving workbench of the present invention;
Figure 3 shows that the cooling structure figure of the motor stator among Fig. 2;
Figure 4 shows that temperature control sensor installation diagram among Fig. 2;
Figure 5 shows that the sealed structure chart that contacts of Work turning table and turret base among Fig. 2.
Reference numeral is expressed as among the figure:
1, Work turning table 2, turret base 3, bearing 31, bearing outer ring 32, bearing inner race 4, adapter sleeve 5, swelling cover 6, encoder support 7, the rotor 8 of angular encoder, temperature control sensor 9, motor stator 10, rotor 11, fixed support 12, the stator 13 of angular encoder, hold-down support 14, hydraulic pressure runner 15, ring-shaped groove 16, cooling water runner 17, cooling water inlet 18, coolant outlet 19, mounting bracket 20, annular labyrinth seal 21, air flow channel 22, rotating shaft 23, servo-control system 24, accurate water chiller 25, hydraulic fluid tank 26, air compressor 27, sealing gas.
The specific embodiment
Below with reference to accompanying drawing, use following examples that the present invention is further set forth.
Structure of the present invention has been shown among Fig. 2, be disc Work turning table 1 above, the lower surface of Work turning table 1 is provided with rotating shaft 22, rotating shaft 22 is perpendicular to the upper and lower end face of Work turning table 1, Work turning table 1 below is a turret base 2, its middle part is provided with the hollow circular cavity that matches with described rotating shaft 22, and the lower surface of Work turning table 1 places the upper surface of turret base 2, and fits with its sealing.As shown in Figure 4; rotating shaft 22 is provided with bearing 3; the cavity inner wall of turret base 2 is fixed in the outer ring 31 of its middle (center) bearing by screw; its inner ring 32 is fixedlyed connected with Work turning table 1 by screw; bearing 3 wherein is high speed radial/axial combination roller bearing; on the outer ring 31 of bearing, be evenly equipped with the PTC temperature control sensor of three series connection; temperature control sensor 8 is fixed in the technology silk hole of bearing outer ring 31 by mounting bracket 19; it is sensing bearing 3 temperature in use accurately; and when overstepping the extreme limit temperature, report to the police, can well play the effect of protection bearing 3.Three temperature sensors 8 are connected with the external electrical control system through series connection, in real time feedback temperature information.Also be provided with motor stator 9, rotor 10 in the cavity of turret base 2 and be used for fixing the cylindrical hollow adapter sleeve 4 of rotor 10, motor stator 9 is along on the cavity inner wall that is axially fixed at rotating shaft 22 lower ends of rotating shaft 22, the upper surface of adapter sleeve 4 is fixedly connected with the lower surface of rotating shaft 22, rotor 10 is fixed on the outer wall of described adapter sleeve 4, after motor stator 9 energisings, drive rotor 10 and Work turning table 1 with the speed rotation; Be provided with angle positioning device that is used for Work turning table 1 corner location and the retaining mechanism that is used to lock Work turning table in the hollow part of adapter sleeve 4.Angle positioning device wherein comprises: angular encoder, encoder support 6 and fixed support 11, and the upper end of encoder support 6 is fixedly connected with the upper end of adapter sleeve 4, and its lower end is fixedly connected with the rotor 7 of angular encoder; The upper end of fixed support 11 is fixedly connected with the stator 12 of angular encoder, and its lower end is fixedly connected with the hold-down support 13 that is fixed in turret base 2 bottoms, and fixed support 11 is with being provided with the annular gap between the adapter sleeve 4.
Retaining mechanism wherein comprises: place the swelling cover 5 in the annular gap and be arranged at the hydraulic pressure runner 14 of fixed support 11 inside, when hydraulic pressure runner 14 was squeezed into hydraulic oil, swelling cover 5 was with adapter sleeve 4 lockings, thus the rotation of control Work turning table 1.
When carrying out turning and high pulling torque milling, motor properties directly has influence on the performance of Work turning table 1.The rotation direct driving motor is had relatively high expectations to temperature, and except coil had the limiting temperature requirement, temperature also directly influenced the moment of torsion and the power consumption of motor.And there was demagnetization danger in the torque that oversteps the extreme limit or motor internal heat waste phenomenon will occurs in the extremely short time.At this moment, just need carry out necessary cooling to motor.As shown in Figure 3, the general method that adopts is to contain the cooling water of additive, after accurate water chiller 24 thermostatic controls in outside, and be injected into the outer shroud of motor stator 9 and the cooling layer between the turret base 2 from cooling water inlet 17 with certain pressure, and the cooling water runner 16 of the different aspects of flowing through, at last by coolant outlet 18.Under the water-cooling system cooling condition, the direct driving motor nominal torque will improve 50% for motor torque under the uncolled condition.
As shown in Figure 5, on Work turning table 1 and turret base 2, be provided with interlaced multiple tracks annular labyrinth seal 20, the labyrinth radially, leave very little gap between axially, can realize the pressed gas sealing in Work turning table inside by sealing gas 27 air compressor 26 outputs and that process source of the gas element is handled, can guarantee that promptly outside water, steam, smear metal, foreign material can't enter the turntable inner chamber, what be unlikely to leak in the time of can guaranteeing the internal pressure air seal again is too fast, causes waste.Simultaneously, sealing gas 27 can also be taken away the heat that a part of turntable inner chamber motor produces.
When needs carry out turning, interlock milling or calibration work, its operation principle is: at first install the part that needs processing on Work turning table 1, servo-control system 23 control hydraulic fluid tanks 25 magnetic valves commutate conducting hydraulic pressure, the retaining mechanism of Work turning table 1 is unclamped, rotor 10 is rotated under system's control, drive Work turning table 1 revolution by radial/axial combination roller bearing, carry out turning or interlock milling etc.; Can accurately locate by closed loop angular encoder feedback when needing calibration.
Under the situation of table latch, carry out milling if desired, work such as boring, principle is the same, be after last Work turning table is located its rotor through the stator of closed loop angular encoder, promptly controlled the angle position of whole Work turning table, the servo-control system 23 control hydraulic fluid tank magnetic valves commutation conducting hydraulic pressure lock sleeve inwall of rotor 10 that is locked, and then reach the purpose of locking workbench.
Though the present invention elaborates it by the specific embodiment; but; the any form that does not exceed the claim protection domain that those skilled in the art should be understood that on this basis to be made and the variation of details all belong to invention which is intended to be protected.

Claims (7)

1. a numerical control directly drives to mill the composite revolving workbench, comprises the disc Work turning table, and the middle part of its lower surface is provided with its vertically disposed rotating shaft; Turret base, its middle part is provided with the hollow circular cavity that matches with described rotating shaft, and the lower surface of described Work turning table places the upper surface of described turret base, and fits with its sealing; Bearing, its outer ring is fixedly connected with the cavity inner wall of described turret base, the rotating shaft of described Work turning table stretches in the inner ring of described bearing, described Work turning table is fixedly connected with its inner ring, it is characterized in that: also be provided with motor stator in the cavity of described turret base, rotor and the cylindrical hollow adapter sleeve that is used for fixing rotor, described motor stator is along on the cavity inner wall that is axially fixed at the rotating shaft lower end of described rotating shaft, the upper surface of described adapter sleeve is fixedly connected with the lower surface of described rotating shaft, described rotor is fixed on the outer wall of described adapter sleeve, after the motor stator energising, drive described rotor and Work turning table with the speed rotation; The hollow part of described adapter sleeve is provided with angle positioning device that is used for Work turning table corner location and the retaining mechanism that is used to lock described Work turning table.
2. numerical control according to claim 1 directly drives to mill the composite revolving workbench, it is characterized in that: described angle positioning device comprises: angular encoder, encoder support and fixed support, the upper end of described encoder support is fixedly connected with the upper end of described adapter sleeve, and its lower end is fixedly connected with the rotor of angular encoder; Described support bracket fastened upper end is fixedly connected with the stator of described angular encoder, and its lower end is fixedly connected with the hold-down support that is fixed in described turret base bottom, and described fixed support is with being provided with the annular gap between the described adapter sleeve.
3. numerical control according to claim 2 directly drives to mill the composite revolving workbench, it is characterized in that: described retaining mechanism comprises: place the swelling cover in the described annular gap and be arranged at the hydraulic pressure runner of described fixed support inside, when the hydraulic pressure runner was squeezed into hydraulic oil, described swelling cover locked described adapter sleeve.
4. described numerical control directly drives to mill the composite revolving workbench according to the arbitrary claim of claim 1-3, it is characterized in that: described Work turning table is provided with the labyrinth seal of multiple tracks annular with the contact-making surface of described turret base, be provided with the air flow channel that an end is connected with the outside air compressor on the described turret base, the other end of described air flow channel is arranged at the middle part of described turret base upper surface.
5. numerical control according to claim 4 directly drives to mill the composite revolving workbench, it is characterized in that: described turret base is provided with ring-shaped groove with the contact-making surface of described motor stator, the water chiller in the same external world of described ring-shaped groove is formed the closed-loop path, is used for the cooling of motor stator.
6. numerical control according to claim 5 directly drives to mill the composite revolving workbench, it is characterized in that: described bearing is a radial/axial combination roller bearing, is fixed with the temperature control sensor that is used for the sensing bearing temperature on the outer ring of described bearing.
7. numerical control according to claim 6 directly drives to mill the composite revolving workbench, it is characterized in that: described temperature control sensor is the PTC temperature control sensor, and described PTC temperature control sensor is evenly equipped with three along described bearing outer ring.
CN 201010502830 2010-10-11 2010-10-11 Numerical-control direct-drive turning-milling composite rotary working table CN101954596A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950508A (en) * 2012-09-17 2013-03-06 唐进元 Dividing plate of turbine disc mortise broaching machine tool
CN104858673A (en) * 2015-05-08 2015-08-26 江苏新瑞重工科技有限公司 Bearing structure of turntable by adopting torque with high rotation speed and great load-carrying capacity
CN105014535A (en) * 2015-08-20 2015-11-04 上海嘉准机械设备有限公司 C-axis rotating device applied to five-axis numerical control grinder
CN105459045A (en) * 2014-09-05 2016-04-06 高明铁企业股份有限公司 Magnetic attracting positioning type rotary platform
CN105500026A (en) * 2016-01-14 2016-04-20 嘉泰数控科技股份公司 Direct drive type pallet changer
CN105690110A (en) * 2016-04-21 2016-06-22 江苏宏达数控科技股份有限公司 Numerical control direct drive rotating platform
CN106002865A (en) * 2016-07-04 2016-10-12 方德兰 Detecting worktable device for solar power generation
CN106002882A (en) * 2016-07-04 2016-10-12 方德兰 Detecting worktable equipment with adjustable angle
CN106002883A (en) * 2016-07-04 2016-10-12 方德兰 Worktable equipment for detecting products
CN106153100A (en) * 2015-03-31 2016-11-23 孔丹群 Swinging quality center of mass tester
CN106624837A (en) * 2016-04-15 2017-05-10 江苏润德精密机械有限公司 Rotary swinging workbench and five-axis efficient vertical machining center provided with same
CN107020397A (en) * 2017-05-25 2017-08-08 张志通 A kind of rotary type drilling machine
CN108818007A (en) * 2018-07-25 2018-11-16 广东钶锐锶数控技术有限公司 A kind of double direct-drive type numerical control rotating platforms in dynamic beam machining center application
CN109794636A (en) * 2019-04-01 2019-05-24 广州霏鸿智能科技有限公司 A kind of numerical control rotation milling head structure
CN111404322A (en) * 2020-04-07 2020-07-10 成都零启自动化控制技术有限公司 High-precision torque motor servo turntable

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950508A (en) * 2012-09-17 2013-03-06 唐进元 Dividing plate of turbine disc mortise broaching machine tool
CN105459045A (en) * 2014-09-05 2016-04-06 高明铁企业股份有限公司 Magnetic attracting positioning type rotary platform
CN106153100B (en) * 2015-03-31 2020-05-26 南京乾利合科技有限责任公司 Rotary mass and mass center tester
CN106153100A (en) * 2015-03-31 2016-11-23 孔丹群 Swinging quality center of mass tester
CN104858673A (en) * 2015-05-08 2015-08-26 江苏新瑞重工科技有限公司 Bearing structure of turntable by adopting torque with high rotation speed and great load-carrying capacity
CN105014535A (en) * 2015-08-20 2015-11-04 上海嘉准机械设备有限公司 C-axis rotating device applied to five-axis numerical control grinder
CN105500026A (en) * 2016-01-14 2016-04-20 嘉泰数控科技股份公司 Direct drive type pallet changer
CN106624837B (en) * 2016-04-15 2018-10-02 江苏润德精密机械有限公司 Rotary oscillation workbench and its five axis high-efficiency vertical machining centers
CN106624837A (en) * 2016-04-15 2017-05-10 江苏润德精密机械有限公司 Rotary swinging workbench and five-axis efficient vertical machining center provided with same
CN105690110A (en) * 2016-04-21 2016-06-22 江苏宏达数控科技股份有限公司 Numerical control direct drive rotating platform
CN106002865A (en) * 2016-07-04 2016-10-12 方德兰 Detecting worktable device for solar power generation
CN106002882A (en) * 2016-07-04 2016-10-12 方德兰 Detecting worktable equipment with adjustable angle
CN106002883B (en) * 2016-07-04 2018-02-27 深圳市成大有科技有限公司 A kind of table apparatus during Product checking
CN106002865B (en) * 2016-07-04 2018-08-07 方小刚 A kind of solar power generation detection table device
CN106002883A (en) * 2016-07-04 2016-10-12 方德兰 Worktable equipment for detecting products
CN107020397A (en) * 2017-05-25 2017-08-08 张志通 A kind of rotary type drilling machine
CN108818007A (en) * 2018-07-25 2018-11-16 广东钶锐锶数控技术有限公司 A kind of double direct-drive type numerical control rotating platforms in dynamic beam machining center application
CN109794636A (en) * 2019-04-01 2019-05-24 广州霏鸿智能科技有限公司 A kind of numerical control rotation milling head structure
CN111404322A (en) * 2020-04-07 2020-07-10 成都零启自动化控制技术有限公司 High-precision torque motor servo turntable

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Application publication date: 20110126