CN102778347A - Mechanical loading device for main shaft or servo shaft of digital control system - Google Patents
Mechanical loading device for main shaft or servo shaft of digital control system Download PDFInfo
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- CN102778347A CN102778347A CN2012102373888A CN201210237388A CN102778347A CN 102778347 A CN102778347 A CN 102778347A CN 2012102373888 A CN2012102373888 A CN 2012102373888A CN 201210237388 A CN201210237388 A CN 201210237388A CN 102778347 A CN102778347 A CN 102778347A
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- main shaft
- axis servomotor
- inertia
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Abstract
The invention discloses a mechanical loading device for a main shaft or a servo shaft of a digital control system. The mechanical loading device mainly consists of the main shaft or the servo shaft, an inertia disc, a connecting disc, a fastening screw, a socket head cap screw, a hex head screw and other parts; the mechanical loading device can design required load inertia according to parameters of different models of motors and accordingly realizes that a motor is loaded with constant torque in the startup stage, and the motor is enabled to be normal and reliable in the high-speed operating state. The mechanical loading device can be applicable to the field test of the main shaft and the servo shaft of the digital control system under load condition in large amount, after the main shafts and servo shafts of different digital control systems are loaded, a servo amplifier still can be guaranteed to operate normally, and the motor still has higher sensitivity and good dynamic response characteristic; meanwhile, the mechanical loading device is convenient to machine and mount, and is easy to disassemble, and further, the mechanical loading device can be applicable to a large number of system loading tests on the premise that the requirement on load condition is not high.
Description
Technical field
The present invention relates to a kind of charger of simulating required load; It specifically is a kind of inertia disc type charger that is used for normal operation under digital control system main shaft or the axis servomotor loading condition; This charger meets motor load inertia matching principle; Can the simple load environment of analog variation rule, convenient processing and installation is reliable, belongs to mechanical hook-up simple and practical in the loading equipemtn field tests.
Background technology
The reliability level of digital control system and numerically-controlled machine has crucial effects for normal operation of numerical control equipment and numerical control production firm raising product competitiveness.The test of digital control system fail-test is under the reliability engineering theoretical direction; By relevant national standard and standard; Combining with digital control machine tool applications characteristics are obtained the data such as mean time between failures MTBF, failure message and running status that reflect digital control system reliability level through the actual tests test.For fully test and test contrast, under normal idle condition, the operation, digital control system is carried out testing under the loading environment in the laboratory simulation actual working environment.
Load application is varied; In the civil engineering structure test and in detecting is to make structure or model obtain the internal force and the distortion of expection; By loading equipemtn or device tested object is applied various effects; Then measurement data is analyzed and then the load-bearing capacity of evaluation structure or model, thus the perfect frame and the theory of computation.The loading method of using always has weight loading, mechanical tool loading, hydraulic-pneumatic loading, inertial force loading, electromagnetism loading and excited vibration loading etc.In addition, in the vehicle flight control system l-G simulation test, loading system is that load simulator is widely used equally.Act on the aerodynamic moment on the rudder face aloft when flying for the simulated flight device, the loading spectrum that load simulator needs accurate reproducing control system to provide, thereby loading accuracy and rapidity proposed high requirement.Load simulator has successively experienced elementary mechanical type inertia load, the load control system of mimic channel structure and the stages such as digital load simulator of computer utility.
Early stage mechanical load method is simple, but can only the simple load of analog variation rule, and can not be adjustable continuously; It is ripe that the electro-hydraulic servo Loading Control System has been tending towards, can load continuously, far distance controlled etc.; Because the continuous lifting of motor performance adds the application of Computer Control Technology, based on torque motor, dynamometer machine and based on the electric loading system of excitation electromagnetic damper also in continuous development.
To the digital control system performance test that reaches 30 different model spindle motors and axis servomotor motor; Consider that demand is simple in earlier stage; Electro-hydraulic servo loads and factors such as electric loading system volume power consumption is big, fitting operation complicacy, adopts the mechanical type loading method, designs the required load inertia of loading disk simulation according to the inertia matching principle; And reliably install, guarantee required load-up condition.
Summary of the invention
The objective of the invention is to be widely used in the on-the-spot test under digital control system main shaft or the axis servomotor bringing onto load condition; After assurance loads different NC system main shaft or axis servomotor; Servoamplifier still can operate as normal, and motor still has higher sensitivity and good dynamic response characteristic; Simultaneously convenient processing and installation is easy to dismounting, under the less demanding prerequisite of loading condition, is applied to the big system loads test of quantity.
The technical scheme that the present invention adopts is: a kind of mechanical type charger that is used for digital control system main shaft or axis servomotor, and this device comprises: main shaft or axis servomotor, inertia dish, holding screw, tie-plate, socket head cap screw and hex screw; Described inertia dish is connected through the described socket head cap screw that is distributed in this tie-plate end face with described tie-plate; Circumferentially locate through being distributed in peripheral described holding screw of described tie-plate and described main shaft or axis servomotor then; Be threaded with described hex screw and described main shaft or axis servomotor end face at described tie-plate end face, make described tie-plate axial location more firm.
Wherein, be clearance fit between described inertia dish and described main shaft or the axis servomotor, be interference fit between described tie-plate and described main shaft or the axis servomotor, realize the radial location of this charger.
Wherein,,, on described inertia dish and described tie-plate, mill out keyway, utilize key to connect and make this charger more reliable under the situation of running up if contain keyway on described main shaft and the axis servomotor according to the concrete condition of described main shaft and axis servomotor.
Wherein, when being threaded with described hex screw and described main shaft or axis servomotor end face, if described main shaft or axis servomotor end face do not have threaded hole or omit here when very little to connect for described tie-plate end face.
Wherein, according to the inertia matching principle, the moment of inertia of choosing described inertia dish is described main shaft or axis servomotor respective motor rotor moment of inertia 2 times.
Wherein, choosing described inertia dish is steel material, by the moment of inertia formula J=0.77D of right cylinder steel
4H * 10
-12Kgm
2Self-defined inertia dish diameter and then obtain inertia disc thickness H.
Wherein, described self-defined inertia dish diameter is got D=200mm.
Wherein, be interference fit between described tie-plate inner circular aperture and described main shaft or the axis servomotor, the magnitude of interference is controlled at 0.005-between the 0.01mm, guarantee good radial location.
The present invention loads with other electro-hydraulic servos and has compared following advantage with electronic, electromagnetism loading system:
1, the most outstanding characteristics of this device are to realize simply and easily the actual stand under load situation of digital control system main shaft or axis servomotor, according to the inertia dish of different NC system spindle motor or the required load of the concrete parameter designing of axis servomotor motor, installation and processing
Permanent torque loaded when 2, this device can be realized electric motor starting; Satisfy under the loading condition simple to operate than other loading systems, need not to consider excessive such as the power consumption noise, saturated, the hysteresis effect of magnetic circuit; Low speed can't load, factors such as loading moment and electric current nonlinear relationship;
3, this device belongs to " zero transmission " type Direct Driving System, has eliminated the influence of conventional ADS driving mode backlash nonlinearity factor, guarantees the dynamic property and the stability of system;
4, this device is low than cost that other loading systems consume, economic and practical, and is easy to dismounting, is loaded convenient in application under the big situation of number of devices at needs.
Description of drawings
Fig. 1 is a kind of mechanical type charger wiring layout that is used for digital control system main shaft or axis servomotor of the present invention;
Fig. 2 is an inertia dish three-dimensional plot of the present invention;
Fig. 3 is a tie-plate three-dimensional plot of the present invention.
Label declaration in the accompanying drawing is following:
1, main shaft (or axis servomotor); 2, inertia dish; 3, holding screw;
4, tie-plate; 5, socket head cap screw; 6, hex screw.
Embodiment
The present invention is a kind of mechanical type charger that is used for digital control system main shaft or axis servomotor, sees also Fig. 1, Fig. 2, Fig. 3, comprises main shaft or axis servomotor 1, inertia dish 2, holding screw 3, tie-plate 4, socket head cap screw 5, hex screw 6 parts such as grade.According to the inertia matching principle, the moment of inertia of choosing inertia dish 2 is main shaft or axis servomotor 1 respective motor rotor moment of inertia 2 times, chooses inertia dish 2 and is steel material, by the moment of inertia formula J=0.77D of right cylinder steel
4H * 10
-12Kgm
2Can self-defined inertia dish diameter (such as getting D=200mm) and then obtain inertia disc thickness H.Because assembling the time contains tie-plate 4 parts, thus can ignore the influence of the moment of inertia that inertia disk center circular hole cuts when calculating, the moment of inertia that obtains total assembly by three-dimensional wiring layout data than needed load inertia error in 0.5%.
Between tie-plate 4 inner circular aperture and main shaft or the axis servomotor 1 is interference fit, and the magnitude of interference is controlled at 0.005-between the 0.01mm, guarantee good radial location.Confirm tie-plate 4 inner circular aperture sizes according to main shaft or axis servomotor diameter of axle size, the tie-plate inner face is taken as about 10mm to the thickness of outer face.Confirm to connect size according to Machine Design position components principle, and then confirm the circumferential size of tie-plate 4 according to socket head cap screw 5 and diameter of axle size with socket head cap screw 5, holding screw 3; Behind the selected holding screw 3, reserve the suitable space size add in thickness between the outer face just can confirm the gross thickness of tie-plate, if definite here tie-plate 4 thickness should select for use hexagon head bolt to connect greater than inertia dish 2 thickness.Confirm tie-plate 4 central through hole sizes according to main shaft or axis servomotor end-face helical hole dimension, so far the concrete size of tie-plate is able to confirm.
Knock with mallet during assembling or copper rod touches loading disk 2 and tie-plate 4 pack into main shaft or axis servomotor 1, get out small rut, pack holding screw 3 at the tie-plate periphery on corresponding to axle with power drill then; Loading disk is connected with socket head cap screw 5 or hexagon head bolt with tie-plate; Be threaded with hex screw 6 and axial end at the tie-plate end face, load normal reliable when guaranteeing to run up and do not produce loosening.
The part that the present invention does not set forth in detail belongs to techniques well known.
Claims (8)
1. mechanical type charger that is used for digital control system main shaft or axis servomotor, it is characterized in that: this device comprises: main shaft or axis servomotor (1), inertia dish (2), holding screw (3), tie-plate (4), socket head cap screw (5) and hex screw (6); Described inertia dish (2) is connected through the described socket head cap screw (5) that is distributed in this tie-plate (4) end face with described tie-plate (4); Circumferentially locate through being distributed in peripheral described holding screw (3) of described tie-plate (4) and described main shaft or axis servomotor (1) then; Be threaded with described hex screw (6) and described main shaft or axis servomotor (1) end face at described tie-plate (4) end face, make described tie-plate (4) axial location more firm.
2. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 1; It is characterized in that: be clearance fit between described inertia dish (2) and described main shaft or the axis servomotor (1); Between described tie-plate (4) and described main shaft or the axis servomotor (1) is interference fit, realizes the radial location of this charger.
3. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 1; It is characterized in that: according to the concrete condition of described main shaft and axis servomotor (1); If contain keyway on described main shaft and the axis servomotor (1); On described inertia dish (2) and described tie-plate (4), mill out keyway, utilize key to connect and make this charger more reliable under the situation of running up.
4. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 1; It is characterized in that: for described tie-plate (4) end face with described hex screw (6) and described main shaft or axis servomotor (1) when end face is threaded, if described main shaft or axis servomotor (1) end face do not have threaded hole or omit here when very little to connect.
5. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 1; It is characterized in that: according to the inertia matching principle, the moment of inertia of choosing described inertia dish (2) is described main shaft or axis servomotor (1) respective motor rotor moment of inertia 2 times.
6. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 5 is characterized in that: choosing described inertia dish (2) is steel material, by the moment of inertia formula J=0.77D of right cylinder steel
4H * 10
-12Kgm
2Self-defined inertia dish diameter and then obtain inertia disc thickness H.
7. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 6 is characterized in that: described self-defined inertia dish diameter is got D=200mm.
8. the mechanical type charger that is used for digital control system main shaft or axis servomotor according to claim 2; It is characterized in that: be interference fit between described tie-plate (4) inner circular aperture and described main shaft or the axis servomotor (1); The magnitude of interference is controlled at 0.005-between the 0.01mm, guarantee good radial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210237388.8A CN102778347B (en) | 2012-07-09 | 2012-07-09 | Mechanical loading device for main shaft or servo shaft of digital control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210237388.8A CN102778347B (en) | 2012-07-09 | 2012-07-09 | Mechanical loading device for main shaft or servo shaft of digital control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102778347A true CN102778347A (en) | 2012-11-14 |
| CN102778347B CN102778347B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210237388.8A Expired - Fee Related CN102778347B (en) | 2012-07-09 | 2012-07-09 | Mechanical loading device for main shaft or servo shaft of digital control system |
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| CN (1) | CN102778347B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837339A (en) * | 2014-03-26 | 2014-06-04 | 中国工程物理研究院机械制造工艺研究所 | Dynamic driving system adopting servo force |
| CN104155608A (en) * | 2014-09-04 | 2014-11-19 | 上海航天电子通讯设备研究所 | Rotating load simulation device |
| CN111331154A (en) * | 2020-04-14 | 2020-06-26 | 陕西诺贝特自动化科技有限公司 | Load automatic lathe that has truss manipulator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331497A (en) * | 1993-05-18 | 1994-12-02 | Kanzaki Kokyukoki Mfg Co Ltd | Load testing device |
| CN2839999Y (en) * | 2005-03-31 | 2006-11-22 | 江苏大学 | Adjustable rotary inertia rotor disc apparatus of electric eddy current retarder test table |
| CN202403900U (en) * | 2011-12-20 | 2012-08-29 | 中国飞机强度研究所 | Loading device for brake test for aircraft wheel |
-
2012
- 2012-07-09 CN CN201210237388.8A patent/CN102778347B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331497A (en) * | 1993-05-18 | 1994-12-02 | Kanzaki Kokyukoki Mfg Co Ltd | Load testing device |
| CN2839999Y (en) * | 2005-03-31 | 2006-11-22 | 江苏大学 | Adjustable rotary inertia rotor disc apparatus of electric eddy current retarder test table |
| CN202403900U (en) * | 2011-12-20 | 2012-08-29 | 中国飞机强度研究所 | Loading device for brake test for aircraft wheel |
Non-Patent Citations (1)
| Title |
|---|
| 周瑞雪: "《对几种刚体转动惯量的研究》", 《贵阳学院学报》, vol. 6, no. 3, 30 September 2011 (2011-09-30) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837339A (en) * | 2014-03-26 | 2014-06-04 | 中国工程物理研究院机械制造工艺研究所 | Dynamic driving system adopting servo force |
| CN103837339B (en) * | 2014-03-26 | 2016-03-09 | 中国工程物理研究院机械制造工艺研究所 | A kind of dynamic servo power-driven system |
| CN104155608A (en) * | 2014-09-04 | 2014-11-19 | 上海航天电子通讯设备研究所 | Rotating load simulation device |
| CN104155608B (en) * | 2014-09-04 | 2017-05-31 | 上海航天电子通讯设备研究所 | One kind rotates load simulating device |
| CN111331154A (en) * | 2020-04-14 | 2020-06-26 | 陕西诺贝特自动化科技有限公司 | Load automatic lathe that has truss manipulator |
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| Publication number | Publication date |
|---|---|
| CN102778347B (en) | 2015-06-17 |
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