CN105300674A - Full-closed-ring high-precision dynamic simulation loading device for rotating shaft - Google Patents

Full-closed-ring high-precision dynamic simulation loading device for rotating shaft Download PDF

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Publication number
CN105300674A
CN105300674A CN201510652435.9A CN201510652435A CN105300674A CN 105300674 A CN105300674 A CN 105300674A CN 201510652435 A CN201510652435 A CN 201510652435A CN 105300674 A CN105300674 A CN 105300674A
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CN
China
Prior art keywords
loading
force
sphere
shaft coupling
transfering
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Pending
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CN201510652435.9A
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Chinese (zh)
Inventor
胡秋
夏仰球
舒强
汪俊文
王宝瑞
米良
廖正菊
张日升
刘兴宝
张庆海
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Institute of Machinery Manufacturing Technology China Academy of Engineering Physics
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Institute of Machinery Manufacturing Technology China Academy of Engineering Physics
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Priority to CN201510652435.9A priority Critical patent/CN105300674A/en
Publication of CN105300674A publication Critical patent/CN105300674A/en
Pending legal-status Critical Current

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Abstract

The invention provides a full-closed-ring high-precision dynamic simulation loading device for a rotating shaft. The full-closed-ring high-precision dynamic simulation loading device comprises a coupling, a force transmission device, a force sensor, a loading force real-time acquiring and controlling system, an electric servo force loading device and a loading head. The coupling is connected with the force transmission device and transmits a force which is output from the electric servo force loading device to a tested object. Two ends of the force sensor are respectively connected with the electric servo force loading device and the loading head, thereby acquiring loading force data and performing feedback to the loading force real-time acquiring and controlling system. The full-closed-ring high-precision dynamic simulation loading device is suitable for random-direction simulation loading of a common rotating shaft, a high-speed rotating shaft, a heavy-load rotating shaft, etc. The full-closed-ring high-precision dynamic simulation loading device provides a new facility for carrying out dynamic simulation loading on the rotating shaft and can realize simulation loading of a plurality of rotating shafts. Furthermore the full-closed-ring high-precision dynamic simulation loading device has advantages of simple operation and wide application.

Description

A kind of revolving shaft closed-loop Dynamic High-accuracy analog loading device
Technical field
The invention belongs to revolving shaft simulation loading technical field, be specifically related to a kind of revolving shaft closed-loop Dynamic High-accuracy analog loading device.
Background technology
Charger is widely used in the fields such as simulation loading test, rigidity test, mainly comprises analog force charger and simulation torque charger.Analog force charger comprises fluid loading, motor loading, electromagnetism loading, piezoelectric ceramics loading etc.Torque loading device comprises measurement of power charger and the magnetic powder brakes such as electric eddy current dynamometer, hydraulic dynamometer and Dyn..
The load test of the revolving shaftes such as leading screw, motor, speed reduction unit and machine tool chief axis is the main path of checking properties of product.Revolving shaft in working order lower stress is complicated, and only no-load running or static loading can not simulate the working condition under revolving shaft actual condition.For the drag that revolving shaft during simulation real work is subject to, in test, often take the method for equivalence to be divided into equivalent radial force, equivalent axial force and equivalent twisting moment by stressed, and be applied on revolving shaft interface.When equivalent force loads, because turning axle is in rotary state, for realizing simulation, dynamic load completely, need to increase the bearing unit adapting to running on simulation cutter, High speed load employing aerostatic bearing, heavily loaded axle loads and adopts hydrodynamic journal liquid polymers.So just reality can be simulated more truly, just experimental test can be carried out to revolving shaft in laboratory.
Name is called that the Chinese patent of " a kind of dynamic servo power drive " (notification number is CN103837339A) provides a kind of power-driven system based on Compress Spring and servomotor, has features such as forming large, power output wide ranges, dynamic load.Can be applicable to loading spectrum applying, Work condition analogue, Static stiffness test etc. in the functional part such as main shaft of numerical control machine tool, guide rail fail-test.This invention is only a kind of power output unit, is not enough to the load test under satisfied simulation measured piece duty.The Chinese patent that name is called " vertical/horizontal Machining centers reliability test main axle cutting resistance analog loading device " (notification number is CN202066690U), based on reliability testing technology and the method for evaluating reliability of engineering test method, invent a kind of Reliability Testing of Machining Center main shaft dynamic cutting drag analog loading device, it adopts cylinder to load, rolling bearing carries, can be used for carrying out general machining center reliability accelerated test, but not be suitable for high speed/heavily loaded main shaft simulation loading.
Summary of the invention
The object of this invention is to provide a kind of revolving shaft closed-loop Dynamic High-accuracy analog loading device, the present invention can meet the load test under simulation measured piece duty, is applicable to high speed/heavily loaded main shaft simulation loading.
Technical scheme of the present invention is as follows:
Revolving shaft closed-loop Dynamic High-accuracy analog loading device of the present invention, be characterized in, described dynamic similation charger comprises shaft coupling, force transfering device, force snesor, loading force Real-time Collection and control system, electrical servo force loading device and loading head.Wherein, described force transfering device contains radial fluid hydrostatic bearing and axial flow of fluid hydrostatic bearing, and electrical servo force loading device contains Timing Belt wheels, servomotor, preloaded spring, ball screw.Its annexation is, described shaft coupling is placed on the central axis in force transfering device, the radial fluid hydrostatic bearing that has fixedly been fixedly connected sequentially in the periphery of shaft coupling and axial flow of fluid hydrostatic bearing.Described electrical servo force loading device transverse central axis is provided with ball screw, and ball screw periphery is provided with preloaded spring.One end of described ball screw is connected with one end of Timing Belt wheels, and the other end of Timing Belt wheels is connected with servomotor.The other end of described ball screw and one end of force snesor are threaded connection, and the other end and the loading head of force snesor are threaded connection.Loading head contacts with force transfering device and connects.Loading force Real-time Collection and control system are electrically connected with force snesor, servomotor respectively.
The central axis of described shaft coupling is crossing with the central axis of ball screw.
Described shaft coupling, force transfering device sphere shaft coupling, sphere force transfering device substitute.
Described sphere force transfering device inner bottom surface is set to sphere, sphere shaft coupling lower surface is set to sphere, and sphere shaft coupling is placed on the central axis in sphere force transfering device, and the inner bottom surface of sphere force transfering device mates with sphere shaft coupling lower surface and arranges.
Input curve in described loading force Real-time Collection and control system, exports during for realizing the high-precision real of loading force.
Described input curve comprises the one in pulse curve, sinusoidal curve, square-wave curve.
Force transfering device in the present invention completes pure axial force, pure radial force or arbitrarily angled power transmission by radial fluid hydrostatic bearing or axial flow of fluid hydrostatic bearing or the two combination composition.
When the radial fluid hydrostatic bearing of described force transfering device and axial flow of fluid hydrostatic bearing be used for high speed shaft load time, adopt aerostatic bearing.
When the radial fluid hydrostatic bearing of described force transfering device and axial flow of fluid hydrostatic bearing be used for heavily loaded axle load time, adopt hydrodynamic journal liquid polymers.
When described force transfering device is used for the loading of arbitrarily angled power, sphere hydrostatic bearing or radial fluid hydrostatic bearing and axial flow of fluid hydrostatic bearing is adopted to combine.
Electrical servo charger in the present invention, drives Timing Belt wheels, ball screw by servomotor, and preloaded spring realizes loading force and exports.
Input curve in loading force Real-time Collection in the present invention and control system, control electrical servo force loading device by control system and export corresponding loading force on request, and export by corresponding force snesor Real-time Collection loading force and feed back to control system, export when realizing the high-precision real of loading force.
A kind of revolving shaft closed-loop Dynamic High-accuracy analog loading device of the present invention, by providing for simple replacement of shaft coupling; Can be applicable to high-speed rotating shaft load when adopting aerostatic bearing, can be applicable to heavily loaded turning axle when adopting hydrodynamic journal liquid polymers and loading; Adopt electrical servo power Loading Control, closed loop stable state accuracy is high, has excellent repetition loading accuracy and linear characteristic.The present invention is applicable to generally, at a high speed, heavy duty etc. revolving shaft any direction simulation loading, for carry out revolving shaft dynamic similation load provide a kind of new means, multiple revolving shaft simulation loading can be realized, easy and simple to handle, be widely used.
Accompanying drawing explanation
Fig. 1 is a kind of revolving shaft closed-loop Dynamic High-accuracy analog loading device structural representation of the present invention;
Fig. 2 is axial force simulation loading schematic diagram of the present invention;
Fig. 3 is arbitrarily angled power simulation loading schematic diagram of the present invention;
In figure, 1. shaft coupling 2. force transfering device 3. force snesor 4. loading force Real-time Collection and control system 5. electrical servo force loading device 6. Timing Belt wheels 7. servomotor 8. preloaded spring 9. ball screw 10. loading head 11. radial fluid hydrostatic bearing 12. axial flow of fluid hydrostatic bearing 13. sphere hydrostatic bearing 21. sphere shaft coupling 22. sphere force transfering device.
Embodiment
Content of the present invention is described in detail below in conjunction with drawings and Examples.
Following examples only for illustration of the present invention, and are not limitation of the present invention.Without departing from the spirit and scope of the present invention, can also make a variety of changes, replace and modification, therefore equal technical scheme also belongs to category of the present invention to the personnel of relevant technical field.
embodiment 1
Fig. 1 is a kind of revolving shaft closed-loop Dynamic High-accuracy analog loading device structural representation (radial force simulation loading schematic diagram) of the present invention, and Fig. 2 is axial force simulation loading schematic diagram of the present invention.In Fig. 1, Fig. 2, revolving shaft closed-loop Dynamic High-accuracy analog loading device of the present invention, comprises shaft coupling 1, force transfering device 2, force snesor 3, loading force Real-time Collection and control system 4, electrical servo force loading device 5 and loading head 10.Wherein, described force transfering device 2 is containing radial fluid hydrostatic bearing 11 and axial flow of fluid hydrostatic bearing 12, and electrical servo force loading device 5 is containing Timing Belt wheels 6, servomotor 7, preloaded spring 8, ball screw 9; Its annexation is, described shaft coupling 1 is placed on the central axis in force transfering device 2, the radial fluid hydrostatic bearing 11 that has fixedly been fixedly connected sequentially in the periphery of shaft coupling 1 and axial flow of fluid hydrostatic bearing 12.Described electrical servo force loading device 5 transverse central axis is provided with ball screw 9, and ball screw 9 periphery is provided with preloaded spring 8; One end of described ball screw 9 is connected with one end of Timing Belt wheels 6, and the other end of Timing Belt wheels 6 is connected with servomotor 7.The other end of described ball screw 9 and one end of force snesor 3 are threaded connection, and the other end and the loading head 10 of force snesor 3 are threaded connection.Loading head 10 contacts with force transfering device 2 and connects.Loading force Real-time Collection and control system 4 are electrically connected with force snesor 3, servomotor 7 respectively.
The central axis of described shaft coupling 1 is crossing with the central axis of ball screw 9.
Described shaft coupling 1, force transfering device 2 sphere shaft coupling 21, sphere force transfering device 22 substitute.
Described sphere force transfering device 22 inner bottom surface is set to sphere, sphere shaft coupling 21 lower surface is set to sphere, sphere shaft coupling 21 is placed on the central axis in sphere force transfering device 22, and the inner bottom surface of sphere force transfering device 22 mates with sphere shaft coupling 21 lower surface and arranges.
Input curve in described loading force Real-time Collection and control system 4, exports during for realizing the high-precision real of loading force.
In the present embodiment, input curve is sinusoidal curve; Force transfering device 2 completes pure radial force transmission by radial fluid hydrostatic bearing 11; The radial fluid hydrostatic bearing 11 of force transfering device 2 loads for high speed shaft, adopts aerostatic bearing.
In the present embodiment, simulation radial force load test is carried out to a high speed revolving shaft.Implementation step is:
1. electrical servo force loading device 4 is fixed on test bench.
2. employing force transfering device 2 is arranged on test revolving shaft by shaft coupling 1, provides air pressure that aerostatic bearing is normally worked.
3. force snesor 3 one end is threadedly attached to electrical servo force loading device 5 end, the other end is threaded connection loading head 10.
4. Adjustment Tests worktable, makes the center line of revolving shaft and the center line radially aligned of force snesor 3.
5. loading force Real-time Collection and control system 4 control electrical servo force loading device 5, make loading head 10 certain distance that advances touch force transfering device 2.
6. revolving shaft High Rotation Speed, in the process, the Dynamic High-accuracy that loading force Real-time Collection and control system 4 realize input curve according to the output of the FEEDBACK CONTROL servomotor 7 of force snesor 3 loads.
7. after single step has loaded, revolving shaft stops operating, and electrical servo force loading device 5 drive load head 10 leaves force transfering device 2.
8. repeat step 6 – 7, realize CYCLIC LOADING.
embodiment 2
The present embodiment is identical with the structure of embodiment 1, and difference is, in the present embodiment, force transfering device 2 is that concentric is arranged with the central axis of electrical servo force loading device 5; Input curve is pulse curve; Force transfering device 2 completes pure axial force transmission by axial flow of fluid hydrostatic bearing 12; The axial flow of fluid hydrostatic bearing 12 of force transfering device 2 loads for heavily loaded axle, adopts hydrodynamic journal liquid polymers.
In the present embodiment, analog force load test is carried out to a heavily loaded revolving shaft.Implementation step is:
1. electrical servo force loading device 4 is fixed on test bench.
2. employing force transfering device 2 is arranged on test revolving shaft by shaft coupling 1, provides hydraulic pressure that hydrodynamic journal liquid polymers are normally worked.
3. force snesor 3 one end is threadedly attached to electrical servo force loading device 5 end, the other end is threaded connection loading head 10.
4. Adjustment Tests worktable, makes the center line of revolving shaft overlap with the center line of force snesor 3.
5. loading force Real-time Collection and control system 4 control electrical servo force loading device 5, make loading head 10 certain distance that advances touch force transfering device 2.
6. revolving shaft rotates, and in the process, the Dynamic High-accuracy that loading force Real-time Collection and control system 4 realize input curve according to the output of the FEEDBACK CONTROL servomotor 7 of force snesor 3 loads.
7. after single step has loaded, revolving shaft stops operating, and electrical servo force loading device 5 drive load head 10 leaves force transfering device 2.
8. repeat step 6 – 7, realize CYCLIC LOADING.
embodiment 3
The present embodiment is identical with the structure of embodiment 1, and difference is, in the present embodiment, shaft coupling 1, force transfering device 2 substitute with sphere shaft coupling 21, sphere force transfering device 22 respectively; Sphere force transfering device 22 inner bottom surface is set to sphere, sphere shaft coupling 21 lower surface is set to sphere, sphere shaft coupling 21 is placed on the central axis in sphere force transfering device 22, and the inner bottom surface of sphere force transfering device 22 mates with sphere shaft coupling 21 lower surface and arranges; Loading head 10 can arbitrarily angledly contact with sphere force transfering device 22; Input curve is square-wave curve; Sphere force transfering device 22 completes the transmission of any direction power by sphere hydrostatic bearing 13.
In the present embodiment, single-revolution axle is carried out to the analog force load test of 45° angle.Implementation step is:
1. electrical servo force loading device 4 is fixed on test bench.
2. employing sphere force transfering device 22 is arranged on test revolving shaft by sphere shaft coupling 21.
3. force snesor 3 one end is threadedly attached to electrical servo force loading device 5 end, the other end is threaded connection loading head 10.
4. Adjustment Tests worktable, makes the center line of the center line of revolving shaft and force snesor 3 angle at 45 °.
5. loading force Real-time Collection and control system 4 control electrical servo force loading device 5, make loading head 10 certain distance that advances touch sphere force transfering device 22.
6. revolving shaft rotates, and in the process, the Dynamic High-accuracy that loading force Real-time Collection and control system 4 realize input curve according to the output of the FEEDBACK CONTROL servomotor 7 of force snesor 3 loads.
7. after single step has loaded, revolving shaft stops operating, and electrical servo force loading device 5 drive load head 10 leaves sphere force transfering device 22.
8. repeat step 6 – 7, realize CYCLIC LOADING.

Claims (4)

1. a revolving shaft closed-loop Dynamic High-accuracy analog loading device, it is characterized in that, described dynamic similation charger comprises shaft coupling (1), force transfering device (2), force snesor (3), loading force Real-time Collection and control system (4), electrical servo force loading device (5) and loading head (10); Wherein, described force transfering device (2) is containing radial fluid hydrostatic bearing (11) and axial flow of fluid hydrostatic bearing (12), and electrical servo force loading device (5) is containing Timing Belt wheels (6), servomotor (7), preloaded spring (8), ball screw (9); Its annexation is, described shaft coupling (1) is placed on the central axis in force transfering device (2), the radial fluid hydrostatic bearing (11) that has fixedly been fixedly connected sequentially in the periphery of shaft coupling (1) and axial flow of fluid hydrostatic bearing (12); Described electrical servo force loading device (5) transverse central axis is provided with ball screw (9), and ball screw (9) periphery is provided with preloaded spring (8); One end of described ball screw (9) is connected with one end of Timing Belt wheels (6), and the other end of Timing Belt wheels (6) is connected with servomotor (7); The other end of described ball screw (9) and one end of force snesor (3) are threaded connection, and the other end and the loading head (10) of force snesor (3) are threaded connection; Loading head (10) contacts with force transfering device (2) and connects; Loading force Real-time Collection and control system (4) are electrically connected with force snesor (3), servomotor (7) respectively.
2. revolving shaft closed-loop Dynamic High-accuracy analog loading device according to claim 1, is characterized in that, the central axis of described shaft coupling (1) is crossing with the central axis of ball screw (9).
3. revolving shaft closed-loop Dynamic High-accuracy analog loading device according to claim 1, is characterized in that, described shaft coupling (1), force transfering device (2) use sphere shaft coupling (21), sphere force transfering device (22) to substitute respectively.
4. revolving shaft closed-loop Dynamic High-accuracy analog loading device according to claim 3, it is characterized in that, described sphere force transfering device (22) inner bottom surface is set to sphere, sphere shaft coupling (21) lower surface is set to sphere, sphere shaft coupling (21) is placed on the central axis in sphere force transfering device (22), and the inner bottom surface of sphere force transfering device (22) mates with sphere shaft coupling (21) lower surface and arranges.
CN201510652435.9A 2015-10-10 2015-10-10 Full-closed-ring high-precision dynamic simulation loading device for rotating shaft Pending CN105300674A (en)

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Application Number Priority Date Filing Date Title
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101701868A (en) * 2009-11-17 2010-05-05 重庆大学 High-speed electric main shaft dynamic rigidity test device
JP2011085444A (en) * 2009-10-14 2011-04-28 Mitsubishi Heavy Ind Ltd Load test apparatus and method of load testing
CN202066690U (en) * 2011-02-24 2011-12-07 国家机床质量监督检验中心 Reliability test main axle cutting resistance analog loading device of vertical/horizontal processing center
CN102426097A (en) * 2011-08-09 2012-04-25 吉林大学 Dynamic loading device for high-speed motorized spindle
CN103419088A (en) * 2013-08-08 2013-12-04 西安交通大学 Numerical control machine tool cutting force load simulation device and method
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
CN203858109U (en) * 2014-05-15 2014-10-01 昆明理工大学 Experiment platform for mix loading of machine tool main shaft
CN104385058A (en) * 2014-10-22 2015-03-04 上海理工大学 Device and method for rapidly detecting static rigidity of numerical control machine tool
CN205002960U (en) * 2015-10-10 2016-01-27 中国工程物理研究院机械制造工艺研究所 Revolving axle full cut -off ring high accuracy developments analog loading device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011085444A (en) * 2009-10-14 2011-04-28 Mitsubishi Heavy Ind Ltd Load test apparatus and method of load testing
CN101701868A (en) * 2009-11-17 2010-05-05 重庆大学 High-speed electric main shaft dynamic rigidity test device
CN202066690U (en) * 2011-02-24 2011-12-07 国家机床质量监督检验中心 Reliability test main axle cutting resistance analog loading device of vertical/horizontal processing center
CN102426097A (en) * 2011-08-09 2012-04-25 吉林大学 Dynamic loading device for high-speed motorized spindle
CN103419088A (en) * 2013-08-08 2013-12-04 西安交通大学 Numerical control machine tool cutting force load simulation device and method
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
CN203858109U (en) * 2014-05-15 2014-10-01 昆明理工大学 Experiment platform for mix loading of machine tool main shaft
CN104385058A (en) * 2014-10-22 2015-03-04 上海理工大学 Device and method for rapidly detecting static rigidity of numerical control machine tool
CN205002960U (en) * 2015-10-10 2016-01-27 中国工程物理研究院机械制造工艺研究所 Revolving axle full cut -off ring high accuracy developments analog loading device

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Application publication date: 20160203