CN201799863U - Numerical control direct-driving turning composite rotating table - Google Patents

Numerical control direct-driving turning composite rotating table Download PDF

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Publication number
CN201799863U
CN201799863U CN2010205560488U CN201020556048U CN201799863U CN 201799863 U CN201799863 U CN 201799863U CN 2010205560488 U CN2010205560488 U CN 2010205560488U CN 201020556048 U CN201020556048 U CN 201020556048U CN 201799863 U CN201799863 U CN 201799863U
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CN
China
Prior art keywords
bearing
ring
numerical control
turret base
rotating shaft
Prior art date
Application number
CN2010205560488U
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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 CN2010205560488U priority Critical patent/CN201799863U/en
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Publication of CN201799863U publication Critical patent/CN201799863U/en

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Abstract

The utility model discloses a numerical control direct-driving turning composite rotating table comprising a disc-shaped rotating table, a hollow rotating table base and a bearing, wherein the outer ring of the bearing is fixedly connected with the inner wall of the cavity of the rotating table base; the rotating shaft of the rotating table is extended into the inner ring of the bearing; the rotating table is fixedly connected with the inner ring of the bearing; the cavity of the rotating table base is further internally provided with a motor stator, a motor rotor and a cylindrical hollow connecting sleeve used for fixing the motor rotor; the motor stator is fixedly arranged on the inner wall of the cavity at the lower end of the rotating shaft along the axial direction of the rotating shaft; the upper end surface of the connecting shaft is fixedly connected with the lower end surface of the rotating shaft; the motor rotor is fixedly arranged on the outer wall of the connecting sleeve; and the hollow part of the connecting sleeve is provided with an angle positioning device and a locking mechanism. The numerical control direct-driving turning composite rotating table has high efficiency, simple transmission structure and good radiation and sealing properties.

Description

A kind of numerical control directly drives to mill the composite revolving workbench

Technical field

The utility model relates to the digital control processing field, more particularly, relates to a kind of easy to operately, and 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 utility model need solve.

The utility model content

Technical problem to be solved in the utility model 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 utility model 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 utlity model 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 the utility model fundamental diagram;

Figure 2 shows that the structure chart of composite revolving workbench of the present utility model;

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 utility model is further set forth.

Structure of the present utility model 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 utility model elaborates it by the specific embodiment; but; those skilled in the art should be understood that; the any form of being made on this basis that does not exceed the claim protection domain and the variation of details all belong to the claimed scope of the utility model.

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.
CN2010205560488U 2010-10-11 2010-10-11 Numerical control direct-driving turning composite rotating table CN201799863U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI508814B (en) * 2013-07-03 2015-11-21
CN105500029A (en) * 2016-02-23 2016-04-20 沈机集团(香港)有限公司 Tray-replaceable direct-driven rotary table
CN105798627A (en) * 2016-04-15 2016-07-27 黑龙江工大华工电机科技有限公司 Workbench directly driven by high-torque torque motor
US9457454B2 (en) 2014-11-21 2016-10-04 Industrial Technology Research Institute Hydraulic hydrostatic pressure rotation module
CN106514290A (en) * 2016-10-31 2017-03-22 广东技术师范学院 Large-overturn-rigidity direct drive rotating table
CN107848089A (en) * 2015-07-03 2018-03-27 弗朗茨凯斯乐有限责任公司 Turntable for lathe
CN109490332A (en) * 2018-10-19 2019-03-19 中国科学院地质与地球物理研究所 Test table
CN110429782A (en) * 2019-07-20 2019-11-08 中国船舶重工集团公司第七二四研究所 The heavy load that can tolerate carrier-borne adverse circumstances directly turns platform

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI508814B (en) * 2013-07-03 2015-11-21
US9457454B2 (en) 2014-11-21 2016-10-04 Industrial Technology Research Institute Hydraulic hydrostatic pressure rotation module
TWI560019B (en) * 2014-11-21 2016-12-01 Ind Tech Res Inst Hydraulic hydrostatic pressure rotation module
CN107848089A (en) * 2015-07-03 2018-03-27 弗朗茨凯斯乐有限责任公司 Turntable for lathe
CN107848089B (en) * 2015-07-03 2021-01-08 弗朗茨凯斯乐有限责任公司 Rotary table for machine tool
CN105500029A (en) * 2016-02-23 2016-04-20 沈机集团(香港)有限公司 Tray-replaceable direct-driven rotary table
CN105798627A (en) * 2016-04-15 2016-07-27 黑龙江工大华工电机科技有限公司 Workbench directly driven by high-torque torque motor
CN106514290A (en) * 2016-10-31 2017-03-22 广东技术师范学院 Large-overturn-rigidity direct drive rotating table
CN109490332A (en) * 2018-10-19 2019-03-19 中国科学院地质与地球物理研究所 Test table
CN110429782A (en) * 2019-07-20 2019-11-08 中国船舶重工集团公司第七二四研究所 The heavy load that can tolerate carrier-borne adverse circumstances directly turns platform

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Granted publication date: 20110420