CN102722138B - Oscillation testing device of servo motor of numerical control machine tool - Google Patents
Oscillation testing device of servo motor of numerical control machine tool Download PDFInfo
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- CN102722138B CN102722138B CN201210208653.XA CN201210208653A CN102722138B CN 102722138 B CN102722138 B CN 102722138B CN 201210208653 A CN201210208653 A CN 201210208653A CN 102722138 B CN102722138 B CN 102722138B
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Abstract
The invention provides an oscillation testing device of a servo motor of a numerical control machine tool. The oscillation testing device comprises a computer, an adjustable camera, a testing tool body and fixing devices, the testing tool body comprises a shallow tank, a solution with the kinematic viscosity of 0.6x10<-3>pa.s-50x10<-3>pa.s at temperature of 40 DEG C is contained in the shallow tank, the adjustable camera directly faces to the solution level, the height of the camera is adjusted to a level by which the cameral can just take a complete picture of the solution level, changes of the solution level are monitored by computer videos, and oscillation of the servo motor can be quantifiably tested by a speed sensor mounted on the testing tool body. The problem of difficulty in distinguishing vibration of the numerical control machine tool from vibration caused by oscillation of the servo motor in the prior art is solved by the oscillation testing device, and the oscillation testing device of the servo motor of the numerical control machine tool has good application prospect.
Description
Technical field
The present invention relates to mechanical field, be specifically related to a kind of numerically-controlled machine servomotor vibration test device.
Background technology
Acceleration transducer is mainly used to test machine vibration in machine tool industry at present, and its principle is mainly to carry out work according to the principle of piezoelectric effect.So-called piezoelectric effect is exactly " for the heteropolar crystal that does not have symcenter, being added in external force on crystal except making crystal generation deformation; also will change the polarized state of crystal; at crystals, set up electric field, this phenomenon that makes medium that polarization occur due to mechanical force is called direct piezo electric effect ".The acceleration transducer using in machine tool industry is mainly this characteristic of crystal modification causing due to acceleration of utilizing its inside.Because this distortion can produce voltage, as long as calculate the relation between the acceleration that produces voltage and apply, just can change into Voltage-output by degree of will speed up.
The use of servomotor due to will with driven quality matches, therefore in numerically-controlled machine, need to adjust servomotor parameter, otherwise easily cause motor oscillates, while especially adopting all closed loop servo drive of grating scale, while not mating due to the compensation of encoder for servo motor and grating scale, more easily do not cause motor oscillates, but vibration is now generally not obvious, in the past relies on micro-judgments or observe workpiece surface roughness judge by finishing; And while utilizing testing tool to test as acceleration transducer etc., because its judgement principle is to have utilized piezoelectric effect, and the vibration causing of vibrating of the vibration in lathe when normal operation and servomotor all can produce this effect, therefore the vibration that, is difficult to vibration that judgement is lathe itself or vibrates and to cause due to servomotor.
Summary of the invention
Object of the present invention provides a kind of numerically-controlled machine servomotor vibration test device, and this numerically-controlled machine servomotor vibration test device can have been got rid of the vibration of lathe itself, finds accurately servomotor this phenomenon of the failure of vibrating.
Numerically-controlled machine servomotor vibration test device of the present invention, comprises computer, adjustable camera, testing tool body, stationary installation, and its technical scheme is: testing tool body comprises that in ，Qian pond, shallow pond, holding one deck is 0.6 * 10 40 ℃ of kinematic viscosity
-3pa.s～50 * 10
-3the solution of pa.s; Adjustable camera faces liquid level, and its height is as the criterion just can shoot the overall diagram of liquid level, by computer video, detects; Testing tool body adopts stationary installation to form firm being connected with the position of carrying out axial feed motion on lathe.
Numerically-controlled machine servomotor vibration test device of the present invention, solution is wherein a kind of in water, 20# machine oil, 30# machine oil or 40# machine oil, or adopt other liquid in above-mentioned range of viscosities, the oscillation mark that liquid level can clear embodiment of take is to select foundation.
Numerically-controlled machine servomotor vibration test device of the present invention, can add appropriate pigment and make ripple feature more obvious in solution wherein.
Numerically-controlled machine servomotor vibration test device of the present invention, its shallow tank depth is 30～50mm, in shallow pond, liquid height can meet observation needs.
On numerically-controlled machine servomotor vibration test device of the present invention, acceleration transducer can be installed.Now, during the integral installation of numerically-controlled machine servomotor vibration test device, should make the detection side of acceleration transducer to consistent with machine tool feed direction.
Numerically-controlled machine servomotor vibration test device of the present invention, the cover plate that transparent material can be installed in the top, shallow pond of testing tool body, covers on the liquid level of shallow pond.
Numerically-controlled machine servomotor vibration test device of the present invention, the material of cover plate can be glass or plastics.
Numerically-controlled machine servomotor vibration test device of the present invention, its stationary installation can be arranged at bottom or the sidepiece of testing tool body, as shown in Figure 4 and Figure 5.
Numerically-controlled machine servomotor vibration test device of the present invention, its stationary installation is magnetic support, bolt, or other the mode that is fixedly connected with.
Numerically-controlled machine servomotor vibration test device of the present invention can need to be adjusted size according to test lathe, and is installed on position applicable on lathe.
Numerically-controlled machine servomotor vibration test device of the present invention, the liquid fluctuating situation of taking by camera, be passed on computer and observe, can judge accurately the vibration of lathe normal operation itself or the vibration causing due to servomotor vibration, what judge vibrates corresponding different liquid fluctuating situations according to being exactly two kinds, as shown in Figures 2 and 3, the liquid fluctuating that the vibration of lathe normal operation itself causes is very little, and liquid level is substantially tranquil calm; And the vibration that servomotor vibration causes is larger for the impact of liquid level, there will be obvious fluctuation to rise and fall.Numerically-controlled machine servomotor vibration test device simple installation of the present invention, can be installed on the lathe workbench of feed motion or the kinematic axis of feed motion, can facilitate and judge that rapidly whether the working condition of lathe servomotor is normal, after certain import closed-loop high-speed numeric control milling machine overhaul, because grating scale does not mate with encoder for servo motor compensation, cause that processing work surfaceness is not enough, by this device, can be found to be rapidly servomotor vibration and cause.
Numerically-controlled machine servomotor vibration test device of the present invention, clear and definite vibration be due to servomotor vibration, cause after, the time-domain and frequency-domain signal of acceleration transducer test that can be by being mounted thereon is analyzed concrete displacement and vibration deviation amplitude, quantifiable servomotor vibration situation is tested.
accompanying drawing explanation
Fig. 1 is the structural representation of servomotor vibration test device of the present invention.
Fig. 2 is the liquid level ripple schematic diagram that the present invention shows when lathe works.
Fig. 3 is the liquid level ripple schematic diagram that the present invention shows when servomotor vibrates the vibration causing.
Fig. 4 is the side schematic view that stationary installation of the present invention is positioned at sidepiece.
Fig. 5 is the side schematic view that stationary installation of the present invention is positioned at bottom.
Sequence number in Fig. 1 and each several part structure and title are as follows:
1 is acceleration transducer, and 2 is testing tool body, and 3 is shallow pond, and 4 is adjustable camera, and 5 is stationary installation.
Embodiment
Below in conjunction with accompanying drawing 1, a kind of embodiment of the present invention is described:
After numerically-controlled machine starts, the liquid fluctuating situation of the 20# machine oil of taking by adjustable camera 4, be passed on computer and observe, determine whether servomotor vibration, if what confirm vibration is because servomotor vibration causes, the time-domain and frequency-domain signal of testing by acceleration transducer 1 is analyzed concrete displacement and vibration deviation amplitude, the servomotor vibration situation of quantification.
Claims (10)
1. a numerically-controlled machine servomotor vibration test device, comprise computer, adjustable camera (4), testing tool body (2), stationary installation (5), it is characterized in that: testing tool body comprises shallow pond (3), in shallow pond, holding one deck is 0.6 * 10 40 ℃ of kinematic viscosity
-3pa.s～50 * 10
-3the solution of pa.s; Adjustable camera (4) faces liquid level, and its height is as the criterion just can shoot the overall diagram of liquid level, by computer video, level change situation is monitored; Testing tool body (2) adopts stationary installation (5) to form firm being connected with the position of carrying out axial feed motion on lathe.
2. proving installation as claimed in claim 1, is characterized in that: described solution is a kind of in water, 20# machine oil, 30# machine oil or 40# machine oil.
3. proving installation as claimed in claim 2, is characterized in that: in described solution, add appropriate pigment and make ripple feature more obvious.
4. proving installation as claimed in claim 2 or claim 3, is characterized in that: described shallow tank depth is 30～50mm.
5. the proving installation as described in right 1, is characterized in that: on described testing tool body, acceleration transducer is installed.
6. the proving installation as described in right 1, is characterized in that: described testing tool body comprises the cover plate of transparent material, covers on the liquid level of shallow pond.
7. the proving installation as described in right 6, is characterized in that: the material of described cover plate is glass or plastics.
8. the proving installation as described in right 1, is characterized in that: described stationary installation (5) is arranged at bottom or the sidepiece of testing tool body.
9. the proving installation as described in right 1 or 8, is characterized in that: described stationary installation (5) is magnetic support.
10. the proving installation as described in right 1, is characterized in that: described proving installation need to be adjusted size according to test lathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208653.XA CN102722138B (en) | 2012-06-25 | 2012-06-25 | Oscillation testing device of servo motor of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208653.XA CN102722138B (en) | 2012-06-25 | 2012-06-25 | Oscillation testing device of servo motor of numerical control machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN102722138A CN102722138A (en) | 2012-10-10 |
| CN102722138B true CN102722138B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210208653.XA Expired - Fee Related CN102722138B (en) | 2012-06-25 | 2012-06-25 | Oscillation testing device of servo motor of numerical control machine tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115165679B (en) * | 2022-09-05 | 2022-11-25 | 武汉鑫佳捷印务有限公司 | Ink detection surface tension measuring device for digital printing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562563A (en) * | 2004-03-31 | 2005-01-12 | 清华大学 | Method for compensating error of numeric-contrlled machine and system |
| CN1794556A (en) * | 2006-01-04 | 2006-06-28 | 天津大学 | Ring structured lin wave contactless liquid medium ultrasonic wave electric machine |
| CN201166601Y (en) * | 2008-02-27 | 2008-12-17 | 广东威灵电机制造有限公司 | Detection station for electric motor oscillation |
| CN202885964U (en) * | 2012-06-25 | 2013-04-17 | 广西工学院 | Testing apparatus for oscillation of numerical control machine tool servo motor |
-
2012
- 2012-06-25 CN CN201210208653.XA patent/CN102722138B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562563A (en) * | 2004-03-31 | 2005-01-12 | 清华大学 | Method for compensating error of numeric-contrlled machine and system |
| CN1794556A (en) * | 2006-01-04 | 2006-06-28 | 天津大学 | Ring structured lin wave contactless liquid medium ultrasonic wave electric machine |
| CN201166601Y (en) * | 2008-02-27 | 2008-12-17 | 广东威灵电机制造有限公司 | Detection station for electric motor oscillation |
| CN202885964U (en) * | 2012-06-25 | 2013-04-17 | 广西工学院 | Testing apparatus for oscillation of numerical control machine tool servo motor |
Non-Patent Citations (2)
| Title |
|---|
| 基于ANSYS的龙门式数控雕铣机的动态特性研究;莫翔明等;《机械制造》;20120531;第50卷(第573期);第22-24页 * |
| 莫翔明等.基于ANSYS的龙门式数控雕铣机的动态特性研究.《机械制造》.2012,第50卷(第573期),22-24. |
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| CN102722138A (en) | 2012-10-10 |
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Granted publication date: 20140312 Termination date: 20190625 |