CN203940993U - Spindle of numerical control lathe reliability load testing machine - Google Patents
Spindle of numerical control lathe reliability load testing machine Download PDFInfo
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- CN203940993U CN203940993U CN201420340550.3U CN201420340550U CN203940993U CN 203940993 U CN203940993 U CN 203940993U CN 201420340550 U CN201420340550 U CN 201420340550U CN 203940993 U CN203940993 U CN 203940993U
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Abstract
The utility model is created and is related to a kind of spindle of numerical control lathe reliability load testing machine.Test unit comprises test-bed body and control system, mounted motor, radial cutting force analog loading device, axial cutting force analog loading device, bearing loading unit and torque loading system on test-bed body.Tested main shaft is fixed on test-bed body by main spindle box.Motor is by the tested main shaft of belt drives, and radial and axial cutting force analog loading device and torque loading system apply moment of torsion, radial force and axial force by bearing loading unit to tested main shaft.The utility model is created can the situation of analog main shaft under machine cut state, realizes reliability load test and precision decline test to spindle of numerical control lathe, exposes the initial failure of main shaft and grasp the precision Decline law of main shaft.
Description
Technical field
The invention relates to machine tool chief axis field tests, is specially a kind of spindle of numerical control lathe reliability load testing machine and method.
Background technology
Main shaft, as the main motion system of numerically-controlled machine, is one of most important functional part of numerically-controlled machine.The reliability of lathe depends on axis system to a great extent, and its Frequent Troubles and density of infection are high.And due to the high-speed motion of main shaft, under cutting state, precision is easily lost.The domestic fail-test about main shaft of numerical control machine tool is started late, at present simple dry run test continuously, temperature rise test etc. are mainly carried out and can only be carried out to the fail-test of main shaft on lathe, cannot realize the situation that simulation dynamic cutting force loads main shaft, deficient especially for the test of main shaft precision decline.Therefore researching and developing a kind of spindle of numerical control lathe reliability load testing machine and method is those skilled in the art's problem demanding prompt solution.
Summary of the invention
In order main shaft to be carried out to fail-test and precision decline test in spindle mounted before on lathe, and main shaft new product or outsourcing main shaft are carried out to performance evaluation, the object of the invention is to provide a kind of spindle of numerical control lathe reliability load testing machine, the situation of analog main shaft under machine cut state, realize reliability load test to spindle of numerical control lathe and precision decline test, expose the initial failure of main shaft and grasp the precision Decline law of main shaft.
Another object of the invention is to provide a kind of spindle of numerical control lathe reliability load test method.Can realize tested main shaft is carried out to dry run test, moment of torsion load test, axially and radial loaded test, for exposing the initial failure of main shaft and grasping the precision Decline law of main shaft.
In order to solve the problems of the technologies described above, the invention adopts following technical scheme: a kind of spindle of numerical control lathe reliability load testing machine, comprise test-bed body and control system, motor, radial cutting force analog loading device, axial cutting force analog loading device, bearing loading unit and torque loading system are installed on test-bed body.
Described bearing loading unit is made up of charger and the mandrel of establishing therein.
Described torque loading system is that the axle of dynamometer machine connects shaft coupling I, torque sensor, shaft coupling II, bearing block assembly and shaft coupling III successively.
Tested main shaft is fixed on test-bed body by main spindle box.
Motor is by the tested main shaft of belt drives, and the other end of tested main shaft is connected with chuck, and chuck holds mandrel, and the other end of mandrel is connected with shaft coupling III.
Radial cutting force analog loading device and axial cutting force analog loading device are flexibly connected with charger respectively.
Hydraulic system connects respectively radial cutting force analog loading device and axial cutting force analog loading device.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, described radial cutting force analog loading device is: back up pad I is fixed by adjustable support I and base plate I and test-bed body, hydraulic cylinder I is arranged in back up pad I, the end of hydraulic cylinder I is setting pressure sensor I and loading bar I successively, and loading bar I is flexibly connected with the charger of bearing loading unit.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, preferred, the end of hydraulic cylinder I is provided with elastic device I, and pressure transducer I is located between loading bar I and elastic device I.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, described axial cutting force analog loading device is: back up pad II is fixed by adjustable support II and base plate II and test-bed body, hydraulic cylinder II is arranged in back up pad II, the end of hydraulic cylinder II is setting pressure sensor II and loading bar II successively, loading bar II is flexibly connected with one end of lever, and the other end of lever is flexibly connected with the end face of the charger of bearing loading unit.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, preferred, the end of hydraulic cylinder II is provided with elastic device II, and pressure transducer II is located between loading bar II and elastic device II.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, main spindle box is fixed by backing plate and adjusting pad and test-bed body.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, torque loading system is fixed on test-bed body by X-Y worktable.
Above-mentioned a kind of spindle of numerical control lathe reliability load testing machine, test-bed body is installed on the ground by cushion blocking.
A kind of spindle of numerical control lathe reliability load test method, utilizes above-mentioned test unit, and method is as follows:
1) measure the radial and axial rotating accuracy of tested main shaft original state with clock gauge, and measure the quiet rigidity of tested main shaft original state;
2) tested main shaft is fixed on test-bed body by main spindle box, and motor, by the tested spindle operation of belt drives, carries out the continuous dry run of 72h to tested main shaft, and every 24h shuts down once, tests rotating accuracy and the quiet rigidity of tested main shaft;
3) tested main shaft is carried out to the load test of 24h: torque loading system by bearing loading unit to tested main shaft apply that moment of torsion loads, radial cutting force analog loading device by bearing loading unit, tested main shaft is applied radially simulate cutting force load, axial cutting force analog loading device applies axial simulation cutting force load by bearing loading unit to tested main shaft; Motor is by the tested spindle operation of belt drives, simultaneously, torque loading system and/or radial cutting force analog loading device and/or axial cutting force analog loading device batch (-type) load tested main shaft, and each load time is no less than 3min, and the quiescent interval between every twice loading is not more than 30s; Load test carries out shutting down once after 12h, tests rotating accuracy and the quiet rigidity of tested main shaft;
4) after load test completes, the rotating accuracy of the tested main shaft of last test and quiet rigidity.
The beneficial effect of the invention is:
1, the invention can realize tested main shaft is carried out to moment of torsion load test, radial loaded test and axial load test, and radial cutting force analog loading device applies radial load by charger to tested main shaft; Axial cutting force analog loading device applies axial load by charger to tested main shaft; Torque loading system applies torque load by charger to tested main shaft.And can apply according to actual working state combination in any the load of three directions, also can realize the adjusting of load time, loading force, loading frequency, loading amplitude.The invention is taken into account the cutting force under real work environment to this factor of material impact of main shaft reliability product, realize the static force of main shaft has been loaded and dynamic force loading, main shaft stressing conditions in Reality simulation working angles, reduce better the real work state of main shaft, made the main shaft fault data obtaining in test and the reliability value recording more true and reliable.
2, the whole experimentation circulation of the invention is carried out in order, and the failure logging that main shaft is occurred is to control system, compared with the main shaft fault data of Field tracing test collection, improve test efficiency and fault collection speed, save a large amount of human and material resources and time.
3, the invention, the continuous dry run test of tested main shaft, moment of torsion loading, axial force loading, radial force loading, the test of spindle rotation accuracy retentivity, the test of quiet Stiffness Degradation have been carried out to effective combination, test method science and efficiency are high, not only the reliability of main shaft is carried out to Validity Test, also the precision stability to main shaft and rigidity retentivity are tested innovatively, have realized multi-functional in one.
Brief description of the drawings
Fig. 1 is the perspective view (having omitted hydraulic system and control system) of the invention.
Fig. 2 is the schematic perspective view of the invention other direction.
Fig. 3 is that the A of Fig. 1 is to view (having omitted hydraulic system and control system).
Fig. 4 is that the B of Fig. 1 is to view (having omitted hydraulic system and control system).
Fig. 5 is the vertical view (having omitted hydraulic system and control system) of the invention.
Fig. 6 is the side view of the invention.
Embodiment
1 one kinds of spindle of numerical control lathe reliability load testing machines of embodiment
As shown in Fig. 1-Fig. 6, a kind of spindle of numerical control lathe reliability load testing machine, is made up of test-bed body (10), motor (20), radial cutting force analog loading device (30), axial cutting force analog loading device (40), bearing loading unit (50), torque loading system (60), hydraulic system (80) and control system (90).
Motor (20), radial cutting force analog loading device (30), axial cutting force analog loading device (40), bearing loading unit (50) and torque loading system (60) are arranged on test-bed body (10).
Test-bed body (10) is installed on the ground by cushion blocking (11).Before testing, make the table-surface level of test-bed body by adjusting the cushion blocking (11) of test-bed body (10) bottom.Preferably, on table top, be designed with somely for fixing T-shaped grooves, radial cutting force analog loading device (30), axial cutting force analog loading device (40) and torque loading system (60) are fixed on the table top of test-bed body by T-shaped or bolt and T-shaped groove.
Bearing loading unit (50) is by charger (51) and establish mandrel (52) formation therein.
Torque loading system (60) is: the axle of dynamometer machine (61) connects shaft coupling I (62), torque sensor (63), shaft coupling II (64), bearing block assembly (65) and shaft coupling III (66) successively.
Main spindle box (72) is fixing with test-bed body (10) by backing plate (74) and adjusting pad (75).Tested main shaft (71) is fixed on test-bed body (10) by main spindle box (72).The end face of tested main shaft (71) is connected with chuck (73).Preferably, backing plate (74) is coordinated main spindle box and test-bed body is fixed with the T-shaped groove on test-bed body table top by T-shaped or bolt.Adjusting pad (75) is for adjusting the centre-height of tested main shaft.
Motor (20) drives tested main shaft (71) by belt (21), the other end of tested main shaft (71) is connected with chuck (73), chuck (73) holds mandrel (52), and the other end of mandrel (52) is connected with shaft coupling III (66).
Radial cutting force analog loading device (30) is: back up pad I (31) is fixing with test-bed body (10) by adjustable support I (32) and base plate I (33), hydraulic cylinder I (34) is arranged in back up pad I (31), the end of hydraulic cylinder I (34) is setting pressure sensor I (35) and loading bar I (36) successively, hydraulic system (80) drives hydraulic cylinder I (34), and then drives loading bar I (36) to be flexibly connected with charger (51).Radial cutting force analog loading device, applies radial load to charger, and loading can realize the adjusting of load time, loading force, loading frequency, loading amplitude.Preferably, the end of hydraulic cylinder I (34) is provided with elastic device I (37), and pressure transducer I (35) is located between loading bar I (36) and elastic device I (37).Elastic device I (37) can play and prevent overload, the effect of protection main shaft, and pressure transducer I (35), can detect the numerical value of the actual power of applying.
Axial cutting force analog loading device (40) is: back up pad II (41) is fixing with test-bed body (10) by adjustable support II (42) and base plate II (43), hydraulic cylinder II (44) is arranged in back up pad II (41), the end of hydraulic cylinder II (44) is setting pressure sensor II (45) and loading bar II (46) successively, hydraulic system (80) drives hydraulic cylinder II (44), and then drive loading bar II (46) to be flexibly connected with one end of lever (47), the other end of lever (47) is flexibly connected with the end face of the charger (51) of bearing loading unit (50).Axial cutting force analog loading device, applies axial load to charger, and loading can realize the adjusting of load time, loading force, loading frequency, loading amplitude.Preferably, the end of hydraulic cylinder II (44) is provided with elastic device II (48), and pressure transducer II (45) is located between loading bar II (46) and elastic device II (48).Elastic device II (48) can play and prevent overload, the effect of protection main shaft, and pressure transducer II (45), can detect the numerical value of the actual power of applying.
Torque loading system (60) is fixed on test-bed body (10) by X-Y worktable (67).Adjust the position of torque loading system by X-Y worktable, make the axle of dynamometer machine 61, shaft coupling, torque sensor, bearing block assembly, bearing loading unit and tested main shaft are on same axis.
Control system (90) is connected with motor (20), hydraulic system (80), dynamometer machine (61), pressure transducer II (45), pressure transducer I (35) and torque sensor (63).Control motor (20), hydraulic system (80), dynamometer machine (61) operation, gather the information of pressure transducer II (45), pressure transducer I (35) and torque sensor (63).
2 one kinds of spindle of numerical control lathe reliability load test methods of embodiment
The test unit that adopts embodiment 1, method is as follows:
1) measure the radial and axial rotating accuracy of tested main shaft (71) original state with clock gauge, and measure the quiet rigidity of tested main shaft original state;
2) tested main shaft (71) is fixed on test-bed body (10) by main spindle box (72), motor (20) drives tested spindle operation by belt (21), tested main shaft is carried out to the continuous dry run of 72h, every 24h shuts down once, tests rotating accuracy and the quiet rigidity of tested main shaft;
3) tested main shaft (71) is carried out to the load test of 24h:
Torque loading system (60) applies moment of torsion by bearing loading unit (50) to tested main shaft and loads.
Radial cutting force analog loading device (30) is applied and radially simulates cutting force load tested main shaft by bearing loading unit (50).
Axial cutting force analog loading device (40) applies axial simulation cutting force load by bearing loading unit (50) to tested main shaft.
Motor (20) drives tested spindle operation by belt (21).Simultaneously, torque loading system (60) and/or radial cutting force analog loading device (30) and/or axial cutting force analog loading device (40) batch (-type) load tested main shaft, each load time is no less than 3min, and the quiescent interval between every twice loading is not more than 30s; Load test carries out shutting down once after 12h, tests rotating accuracy and the quiet rigidity of tested main shaft.
The creativeness of the invention is also the loading of combination in any moment of torsion, radial loaded and axially loads, meets the actual working state of tested main shaft.
4) after load test completes, the rotating accuracy of the tested main shaft of last test and quiet rigidity.
Adopt the invention method can to tested main shaft carry out dry run test, moment of torsion load test, axially and radial loaded test, by measuring rotating accuracy and the quiet rigidity of tested main shaft, expose the initial failure of tested main shaft and grasp the precision Decline law of tested main shaft.
While carrying out spindle rotation accuracy test, main shaft is applied to axial force, with the vertical contact measured end face of clock gauge, make main shaft rotation, measure corresponding max value of error.While measuring the radial accuracy of spindle hole axis, make inspection rod and inner hole of spindle close contact, a bit measuring diameter run-out with clock gauge near main shaft end face, then in the position apart from last measurement point 300mm, use the same method and measure the diameter run-out of this point, thus the diameter run-out that draws spindle hole axis.
While carrying out Spindle Static rigidity test, for the radially quiet rigidity that detects main shaft, adopt radial cutting force analog loading device to carry out radial loaded.The adjustable support of first adjusting on base plate makes back up pad level, and make the axis of loading bar and bearing loading unit be in sustained height, then by Hydraulic Cylinder piston, the loading bar I that piston promotes front end is used in masterpiece on bearing loading unit, and bearing loading unit is applied to power on main shaft.For the axial static rigidity that detects main shaft, adopting same method of adjustment to adjust loading bar II arrives and the matched height of lever, loading bar II is applied to power on lever, by lever principle, masterpiece is used on the end face of charger of bearing loading unit, by bearing loading unit, power is applied on main shaft, and then realizes the axial loading of main shaft.Hydraulic system on radial and axial cutting force analog loading device can realize the adjusting of load time, loading force, loading frequency and loading amplitude.
Carry out moment of torsion and load while test, drive and realize the position adjustments of dynamometer machine by the leading screw of the X-axis on X-Y worktable and Y-axis, and can lock, make dynamometer machine and shaft coupling, torque sensor, bearing block assembly and bearing loading unit meet right alignment requirement.Dynamometer machine carries out moment of torsion loading to main shaft, and torque sensor records variation and the numerical value of moment of torsion simultaneously.
Carry out simulated condition and load when test, can carry out radially main shaft, axially and load when moment of torsion or selectivity loads to simulate actual operating mode.This test belongs to integrative test, main shaft loads continuously respectively test under low speed, middling speed, high-speed case, loading system can be carried out to main shaft the dynamic load of stipulated time, each load time that loads test period is no less than 3min, quiescent interval is not more than 30s, and the numerical value of measurement result can be shown by software interface.
Claims (8)
1. a spindle of numerical control lathe reliability load testing machine, it is characterized in that: comprise test-bed body (10) and control system (90), motor (20), radial cutting force analog loading device (30), axial cutting force analog loading device (40), bearing loading unit (50) and torque loading system (60) are installed on test-bed body (10); Described bearing loading unit (50) is by charger (51) and establish mandrel (52) formation therein; Described torque loading system (60) is that the axle of dynamometer machine (61) connects shaft coupling I (62), torque sensor (63), shaft coupling II (64), bearing block assembly (65) and shaft coupling III (66) successively; Tested main shaft (71) is fixed on test-bed body (10) by main spindle box (72); Motor (20) drives tested main shaft (71) by belt (21), the other end of tested main shaft (71) is connected with chuck (73), chuck (73) holds mandrel (52), the other end of mandrel (52) is connected with shaft coupling III (66), and radial cutting force analog loading device (30) and axial cutting force analog loading device (40) are flexibly connected with charger (51) respectively; Hydraulic system (80) connects respectively radial cutting force analog loading device (30) and axial cutting force analog loading device (40).
2. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 1, it is characterized in that: described radial cutting force analog loading device (30) is: back up pad I (31) is fixing with test-bed body (10) by adjustable support I (32) and base plate I (33), hydraulic cylinder I (34) is arranged in back up pad I (31), the end of hydraulic cylinder I (34) is setting pressure sensor I (35) and loading bar I (36) successively, loading bar I (36) is flexibly connected with the charger (51) of bearing loading unit (50).
3. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 2, it is characterized in that: the end of hydraulic cylinder I (34) is provided with elastic device I (37), pressure transducer I (35) is located between loading bar I (36) and elastic device I (37).
4. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 1, it is characterized in that: described axial cutting force analog loading device (40) is: back up pad II (41) is fixing with test-bed body (10) by adjustable support II (42) and base plate II (43), hydraulic cylinder II (44) is arranged in back up pad II (41), the end of hydraulic cylinder II (44) is setting pressure sensor II (45) and loading bar II (46) successively, loading bar II (46) is flexibly connected with one end of lever (47), the other end of lever (47) is flexibly connected with the end face of the charger (51) of bearing loading unit (50).
5. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 4, it is characterized in that: the end of hydraulic cylinder II (44) is provided with elastic device II (48), pressure transducer II (45) is located between loading bar II (46) and elastic device II (48).
6. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 1, is characterized in that: main spindle box (72) is fixing with test-bed body (10) by backing plate (74) and adjusting pad (75).
7. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 1, is characterized in that: torque loading system (60) is fixed on test-bed body (10) by X-Y worktable (67).
8. a kind of spindle of numerical control lathe reliability load testing machine as claimed in claim 1, is characterized in that: test-bed body (10) is installed on the ground by cushion blocking (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340550.3U CN203940993U (en) | 2014-06-24 | 2014-06-24 | Spindle of numerical control lathe reliability load testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420340550.3U CN203940993U (en) | 2014-06-24 | 2014-06-24 | Spindle of numerical control lathe reliability load testing machine |
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| CN203940993U true CN203940993U (en) | 2014-11-12 |
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| CN201420340550.3U Expired - Lifetime CN203940993U (en) | 2014-06-24 | 2014-06-24 | Spindle of numerical control lathe reliability load testing machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019986A (en) * | 2014-06-24 | 2014-09-03 | 沈阳机床(集团)有限责任公司 | Reliability loading testing device and method for main shaft of numerically controlled lathe |
| CN105067234A (en) * | 2015-07-17 | 2015-11-18 | 安阳工学院 | High speed electric main shaft comprehensive experiment platform and experiment method |
| CN105115743A (en) * | 2015-06-26 | 2015-12-02 | 北京第二机床厂有限公司 | Numerical control external cylindrical grinding machine reliability test comprehensive loading device |
| CN109238673A (en) * | 2014-11-28 | 2019-01-18 | 重庆西山科技股份有限公司 | Operation power device performance testing device and its outer force loading device |
| CN113155451A (en) * | 2021-04-29 | 2021-07-23 | 吉林大学 | Portable numerical control lathe main shaft test device |
| CN115056036A (en) * | 2022-07-13 | 2022-09-16 | 浙江金火科技实业有限公司 | Spindle box part detection device on numerical control lathe |
-
2014
- 2014-06-24 CN CN201420340550.3U patent/CN203940993U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019986A (en) * | 2014-06-24 | 2014-09-03 | 沈阳机床(集团)有限责任公司 | Reliability loading testing device and method for main shaft of numerically controlled lathe |
| CN109238673A (en) * | 2014-11-28 | 2019-01-18 | 重庆西山科技股份有限公司 | Operation power device performance testing device and its outer force loading device |
| CN109238673B (en) * | 2014-11-28 | 2020-08-18 | 重庆西山科技股份有限公司 | Performance testing device for operation power device and external force loading device thereof |
| CN105115743A (en) * | 2015-06-26 | 2015-12-02 | 北京第二机床厂有限公司 | Numerical control external cylindrical grinding machine reliability test comprehensive loading device |
| CN105115743B (en) * | 2015-06-26 | 2017-10-31 | 北京第二机床厂有限公司 | Numerical control external cylindrical grinding machine reliability test integrated loading device |
| CN105067234A (en) * | 2015-07-17 | 2015-11-18 | 安阳工学院 | High speed electric main shaft comprehensive experiment platform and experiment method |
| CN105067234B (en) * | 2015-07-17 | 2018-02-06 | 安阳工学院 | High-speed electric main shaft synthesis experiment platform and experimental method |
| CN113155451A (en) * | 2021-04-29 | 2021-07-23 | 吉林大学 | Portable numerical control lathe main shaft test device |
| CN115056036A (en) * | 2022-07-13 | 2022-09-16 | 浙江金火科技实业有限公司 | Spindle box part detection device on numerical control lathe |
| CN115056036B (en) * | 2022-07-13 | 2024-05-07 | 浙江金火科技实业有限公司 | Main spindle box part detection device on numerical control lathe |
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| CP01 | Change in the name or title of a patent holder |
Address after: No.17a1, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee after: General Technology Group Shenyang Machine Tool Co.,Ltd. Address before: No.17a1, Kaifa Road, Shenyang Economic and Technological Development Zone, Shenyang City, Liaoning Province Patentee before: SHENYANG MACHINE TOOL (GROUP) CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
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Granted publication date: 20141112 |