CN115560793A - High-speed rotation detection platform of magnetic encoder - Google Patents
High-speed rotation detection platform of magnetic encoder Download PDFInfo
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- CN115560793A CN115560793A CN202211398335.4A CN202211398335A CN115560793A CN 115560793 A CN115560793 A CN 115560793A CN 202211398335 A CN202211398335 A CN 202211398335A CN 115560793 A CN115560793 A CN 115560793A
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- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The utility model provides a high-speed rotatory testing platform of magnetic encoder, this testing platform includes the platform base, test platform, the first adjusting part of reading, driver part and drive disk assembly, test platform sets up on the platform base, be equipped with driver part and drive assembly on test platform, drive assembly drives the toothed disc mounting panel, and be equipped with the first adjusting part of reading on one side of the toothed disc mounting panel, the reading is installed on the first adjusting part of reading, and towards the toothed disc mounting panel. According to the high-speed rotation detection platform of the magnetic encoder, a common low-speed high-inertia servo motor is adopted to meet the controllability of a gear disc during rotation, meanwhile, a synchronous belt speed-increasing transmission mechanism is adopted to greatly improve the rotating speed of the rotating disc, the requirement of the magnetic encoder on simulation of working condition testing before delivery can be met, a special high-speed servo motor is not required to be specially used, the cost of testing equipment is reduced, an X/Y/Z axis fine-tuning sliding table is arranged on the test platform to accurately adjust the position of a reading head, and the test result is ensured to be more reliable.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of high-precision machine tool accessories, in particular to the technical field of detection equipment of a magnetic encoder used on a high-precision machine tool or an elevator traction main shaft.
[ background of the invention ]
The magnetic encoder is also called a magnetic rotary encoder, is a detection device based on a novel magnetic sensitive element, and although the photoelectric encoder occupies a large share in the encoder on the market at present, the magnetic rotary encoder has high rotating speed, good usability, high shock resistance, easy adjustment and safe maintenance and low cost, so the magnetic rotary encoder becomes a better choice for replacing the common precision occasion of the rotary transformer.
The magnetic encoder is composed of a gear disc and a reading head as shown in a structural diagram, wherein an inner hole of the gear disc is arranged on the spindle, the reading head is arranged on the side face of the gear disc, and the rotating speed and the motion condition of the spindle are detected by reading the frequency of specific teeth on the outer surface of the gear disc.
The magnetic encoder needs to simulate working conditions for detection before leaving the factory. The coaxiality tolerance requirement of the gear disc and the main shaft is less than 0.02mm, and the rotating speed of the main shaft is 6000 to 7000 revolutions per minute. The rated rotating speed of a common servo motor driving the main shaft to rotate is more than 3000 r/min, and the detection requirement cannot be met.
Based on the above, a targeted detection auxiliary device is designed by switching to the magnetic encoder before delivery, and the detection requirement can be met to reach the corresponding rotating speed.
[ summary of the invention ]
The invention provides a high-speed rotation detection platform of a magnetic encoder, aiming at the existing problems, the detection platform is specially used for the detection of the magnetic encoder, a common low-speed high-inertia servo motor is adopted to meet the controllability of a gear disc during the rotation motion, and a synchronous belt speed-increasing transmission mechanism is adopted to enable the speed of a rotary disc to reach the rotating speed of 7500 r/min, so that the use requirement of equipment is met at relatively low cost by adopting a special high-speed servo motor, and the position of a reading head can be accurately and conveniently adjusted by adopting a high-precision XYZ fine adjustment sliding table.
The invention relates to a high-speed rotation detection platform of a magnetic encoder, which comprises a platform base, a test platform, a reading head adjusting part, a driving part and a transmission part, wherein the test platform is arranged on the platform base, the test platform is provided with the driving part and the transmission part, the transmission part drives a gear disc mounting plate, the reading head adjusting part is arranged on one side of the gear disc mounting plate, and the reading head is arranged on the reading head adjusting part and faces the gear disc mounting plate.
This drive part includes servo motor and motor output shaft, and this servo motor sets up on test platform, and its motor output shaft links up with the drive disk assembly interlock.
The transmission part comprises a driving wheel, a primary transmission belt, a first transmission wheel, a second transmission wheel, a secondary transmission belt, a driven wheel and a gear wheel rotating shaft, wherein the driving wheel and a motor output shaft rotate coaxially, the primary transmission belt is arranged between the driving wheel and the first transmission wheel, the first transmission wheel and the second transmission wheel are coaxially arranged on a transmission shaft, the secondary transmission belt is arranged between the second transmission wheel and the driven wheel, and the driven wheel is fixed on the gear wheel rotating shaft.
The modulus and the tooth number of the driving wheel and the second driving wheel are the same, and the modulus and the tooth number of the first driving wheel and the driven wheel are the same.
The transmission component also comprises two tensioning mechanisms, namely a first tensioning mechanism and a second tensioning mechanism, wherein the first tensioning mechanism is arranged on one side of the primary transmission belt, and the second tensioning mechanism is arranged on one side of the secondary transmission belt.
From the transmission relation, the driving wheel is coaxial with the motor output shaft and synchronously rotates, the driving wheel drives the first driving wheel to rotate through the primary driving belt, the first driving wheel and the second driving wheel are coaxially arranged, the second driving wheel drives the driven wheel to rotate through the secondary driving belt, the driven wheel is fixed on the gear disc rotating shaft, and finally the gear disc rotating shaft is driven to rotate.
This gear plate mounting panel fixed mounting is in the gear plate pivot, and this gear plate pivot setting is transferred at test platform to run through test platform, and the gear plate mounting panel is fixed at the position that the gear plate pivot stretches out above test platform.
The gear disc mounting plate is fixedly arranged on a gear disc rotating shaft through a gear compression nut, the outer diameter of the gear disc mounting plate is matched with the inner diameter of the gear disc, and a gear disc positioning step surface is arranged on the outer edge of the gear disc mounting plate.
The reading head adjusting part comprises an X/Y/Z shaft fine-tuning sliding table and a reading head fixing plate, the X/Y/Z shaft fine-tuning sliding table is installed on one side of a gear wheel disc installation plate on the testing platform, and the reading head fixing plate is installed on the top of the X/Y/Z shaft fine-tuning sliding table.
The reading head is arranged on a reading head fixing plate, and the reading direction faces to the direction of the gear wheel.
Among these are the selection of the servomotors:
according to a disc rotational inertia calculation formula: j =1/2mr
Wherein: j-moment of inertia, unit kg.m
m- -disc mass in kg
r- -disc radius, unit m
Calculating the rotational inertia J1 of the gear disc mounting plate;
calculating the moment of inertia J2 of the gear disc;
the total load inertia of the motor is equal to the sum of the inertia of the gear disc mounting plate and the inertia of the gear disc: j = J1+ J2;
and according to the servo motor model selection principle, selecting the load inertia to the motor rotor inertia ratio to be less than or equal to 5.
According to the high-speed rotation detection platform of the magnetic encoder, a common low-speed high-inertia servo motor is adopted to meet the controllability of a gear disc during rotation, meanwhile, a synchronous belt speed-increasing transmission mechanism is adopted to greatly improve the rotating speed of the rotating disc, the requirement of the magnetic encoder on simulation of working condition testing before delivery can be met, a special high-speed servo motor is not required to be specially used, the cost of testing equipment is reduced, an X/Y/Z axis fine-adjustment sliding table is arranged on the test platform, the position of a reading head is accurately and quickly adjusted, and the test result is more reliable.
[ description of the drawings ]
FIG. 1 is a schematic diagram of the overall structure of a high-speed rotation detecting platform of a magnetic encoder according to the present invention;
FIG. 2 is a schematic illustration showing a disassembled structure of a high-speed rotation detecting platform of a magnetic encoder according to the present invention;
FIG. 3 is a rear view of a rear disassembled structure of a high-speed rotation detecting platform of a magnetic encoder according to the present invention;
FIG. 4 is a schematic diagram of an explosion structure of a high-speed rotation detection platform of a magnetic encoder according to the present invention;
FIG. 5 is a partial cross-sectional view of a high speed rotary sensing platform for a magnetic encoder in accordance with the present invention;
FIG. 6 is a schematic structural diagram of a reading head adjusting component of a high-speed rotation detecting platform of a magnetic encoder according to the present invention;
wherein: 10. a platform base; 20. a test platform; 30. a reading head adjusting part; 31. a reading head; 32. an X/Y/Z axis fine adjustment sliding table; 33. a reading head fixing plate; 40. a drive member; 41. a servo motor; 42. an output shaft of the motor; 50. a transmission member; 51. a driving wheel; 52. a primary drive belt; 53. a first drive pulley; 54. a second transmission wheel; 55. a secondary conveyor belt; 56. a driven wheel; 57. a gear plate rotating shaft; 58. a first tensioning mechanism; 59. a second tensioning mechanism; 60. a gear plate mounting plate; 61. a gear disc positions a step surface; 62. the gear compresses the nut;
100. a gear disc.
[ detailed description ] embodiments
The invention will be described in detail with reference to the drawings and embodiments, examples of which are illustrated in the drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The invention relates to a detection platform, which is a testing device designed for testing a magnetic encoder, and can adapt to gear discs with mass less than 0.8KG and different tooth numbers and moduli within an outer diameter range of 200mm to 212mm. Of course, according to the design principle, gear disc mounting plates with different adaptive outer diameters can be used for matching gear disc mounting plates with different outer diameters.
Referring to fig. 1, a high-speed rotation detecting platform of a magnetic encoder is shown, which includes a platform base 10, a testing platform 20, a reading head adjusting component 30, a driving component 40 and a transmission component 50, wherein the testing platform is disposed on the platform base 10, the testing platform 20 is provided with the driving component 40 and the transmission component 50, the transmission component 50 drives a gear plate mounting plate 60, the reading head adjusting component 30 is disposed on one side of the gear plate mounting plate 60, and a reading head 31 is mounted on the reading head adjusting component 30 and faces the gear plate mounting plate 60.
Referring to fig. 2 and 3: the driving member 40 includes a servo motor 41 and a motor output shaft 42, the servo motor 41 is disposed on the testing platform 20, and the motor output shaft 42 is linked with the transmission member 50. The driving component is used as a power output source, and the output power is transmitted through the transmission component 50 until the gear plate mounting plate is finally driven to rotate.
The transmission part 50 comprises a driving wheel 51, a primary transmission belt 52, a first transmission wheel 53, a second transmission wheel 54, a secondary transmission belt 55, a driven wheel 56 and a gear wheel rotating shaft 57, wherein the driving wheel 51 rotates coaxially with the motor output shaft 42, the primary transmission belt 52 is arranged between the driving wheel and the first transmission wheel 53, the first transmission wheel 53 and the second transmission wheel 54 are arranged on the transmission shaft coaxially, the secondary transmission belt 55 is arranged between the second transmission wheel 54 and the driven wheel 56, and the driven wheel 56 is fixed on the gear wheel rotating shaft 57.
In terms of transmission relation, the driving wheel 51 is coaxial with the motor output shaft 42 and synchronously rotates, the driving wheel 51 drives the first driving wheel 53 to rotate through the primary driving belt 52, the first driving wheel 53 and the second driving wheel 54 are coaxially arranged, the second driving wheel 54 drives the driven wheel 56 to rotate through the secondary driving belt 55, and the driven wheel 56 is fixed on the gear disc rotating shaft 57 and finally drives the gear disc rotating shaft 57 to rotate.
The module and the tooth number of the driving wheel 51 and the second transmission wheel 54 are the same, and the module and the tooth number of the first transmission wheel 53 and the driven wheel 56 are the same. The motion of the motor output shaft 42 is transmitted to the gear plate shaft 57 by a primary and secondary drive belt.
The transmission member 50 further includes two tensioning mechanisms, a first tensioning mechanism 58 and a second tensioning mechanism 59, respectively, the first tensioning mechanism 58 being disposed on the side of the primary belt 52, and the second tensioning mechanism 59 being disposed on the side of the secondary belt 55. The first tensioning mechanism 58 provides tension to the primary drive belt and the second tensioning mechanism 59 provides tension to the secondary drive belt 55.
Referring to fig. 3 and 4: this gear plate mounting panel 60 fixed mounting is on gear plate pivot 57, and this gear plate pivot 57 setting is transferred at test platform 20 to run through test platform 20, and gear plate mounting panel 60 fixes the position that gear plate pivot 57 stretches out on test platform 20. I.e., the gear plate mounting plate 60, is disposed above the test platform 20.
The gear plate mounting plate 60 is fixedly mounted on the gear plate rotating shaft 57 through a gear compression nut 62, the outer diameter of the gear plate mounting plate 60 is matched with the inner diameter of the gear plate 100, and a gear plate positioning step surface 61 is arranged on the outer edge of the gear plate mounting plate 60. The gear disc positioning step surface is used for placing and supporting a gear disc, the gear disc is tightly clamped into the step surface 61 in a seam-fitting manner, and the gear disc is stably assembled on the gear disc mounting plate 60.
Please refer to fig. 5: the reading head adjusting part 30 comprises an X/Y/Z axis fine adjustment sliding table 32 and a reading head fixing plate 33, wherein the X/Y/Z axis fine adjustment sliding table 32 is installed on one side of a gear wheel disc installation plate 60 on the test platform 20, and the reading head fixing plate 33 is installed on the top of the X/Y/Z axis fine adjustment sliding table 32. The X/Y/Z axis fine adjustment sliding table 32 has the function of realizing lifting and sliding adjustment in a three-dimensional coordinate axis system, and can drive the reading head fixing plate 33 to move and adjust in the X/Y/Z coordinate direction, so that the reading head is located at the most suitable reading space position. The purpose of accurate regulation is realized.
The fine adjustment knobs are arranged in each direction of the X/Y/Z axis fine adjustment sliding table 32, the micro lead screws are driven through the knobs, and the positions of the reading head fixing plates 33 can be adjusted in the XYZ directions respectively, so that the positions of the reading heads can be adjusted. The adjusting precision of the screw rod is 0.02mm. During debugging, the waveform on the oscilloscope is observed, and the fine adjustment knob is adjusted, so that the optimal distance from the reading head to the gear disc can be debugged.
The reading head 31 is mounted on a reading head fixing plate 33, and the reading direction is towards the direction of the gear wheel. The reading head 31 is connected with an oscilloscope through a data line, and transmits the collected gear motion state to the oscilloscope, so that a waveform curve can be seen on the oscilloscope.
Among these are the selection of the servomotors:
according to a disc rotational inertia calculation formula: j =1/2mr
Wherein: j-moment of inertia, unit kg.m
m- -disc mass in kg
r- -disc radius, unit m
Calculating the rotational inertia J1 of the gear disc mounting plate;
calculating the moment of inertia J2 of the gear disc;
the total load inertia of the motor is equal to the sum of the inertia of the gear disc mounting plate and the inertia of the gear disc: j = J1+ J2;
and according to the servo motor model selection principle, selecting the load inertia to the motor rotor inertia ratio to be less than or equal to 5.
According to the algorithm, the actual size is given and substituted into a formula for calculation:
the radius of the gear disc mounting plate =0.101m, the mass =0.36kg, the diameter of the lightening hole is 0.02m,
calculating the rotational inertia J1=20.26x10 of the gear disc mounting plate -4 kg.m²
Outer radius =0.103m, inner radius =0.09m, and mass =0.25kg
Calculating the moment of inertia J2=23.16x10 of the gear plate -4 kg.m²
The total inertia of the motor load is as follows: j = J1+ J2=43.42x10 -4 kg.m²
According to the principle of servo motor model selection, the ratio of load inertia to motor rotor inertia should not be more than 5,
selecting a multi-motor Sichuan TSM1310 servo motor with rated power of 2kw,
rated speed 1500 rpm, rotor inertia 10.44x10 -4 KG.m²。
43.42/10.44=4.159 and the motor meets the use requirement.
Among them is the choice of the transmission components:
the speed increasing ratio of 7500/1500=5 is selected, and a synchronous belt is adopted as a transmission element for smooth transmission and noise and vibration reduction. Meanwhile, in order to achieve more stable transmission, a two-stage transmission mode is adopted, and a tensioning mechanism is arranged externally.
According to the high-speed rotation detection platform of the magnetic encoder, a common low-speed high-inertia servo motor is adopted to meet the controllability of a gear disc during rotation, meanwhile, a synchronous belt speed-increasing transmission mechanism is adopted to greatly improve the rotating speed of a rotating disc, the requirement of a magnetic encoder for simulating working condition testing before delivery can be met, a special high-speed servo motor is not required to be specially used, so that the cost of testing equipment is reduced, an X/Y/Z-axis fine-adjustment sliding table is arranged on the test platform, the position of a reading head is accurately and quickly adjusted, and the test result is more reliable.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a high-speed rotatory testing platform of magnetic encoder, a serial communication port, this testing platform includes the platform base, test platform, the first adjusting part of reading, driver part and drive disk assembly, test platform sets up on the platform base, is equipped with driver part and drive component on test platform, drive component drives the toothed disc mounting panel, and is equipped with the first adjusting part of reading on one side of the toothed disc mounting panel, the reading is installed on the first adjusting part of reading to towards the toothed disc mounting panel.
2. The high-speed rotation detecting platform of claim 1, wherein the driving member comprises a servo motor and a motor output shaft, the servo motor is disposed on the testing platform, and the motor output shaft is linked with the transmission member.
3. The high-speed rotation detection platform of the magnetic encoder as claimed in claim 2, wherein the transmission member comprises a driving wheel, a primary transmission belt, a first transmission wheel, a second transmission wheel, a secondary transmission belt, a driven wheel and a gear wheel rotating shaft, wherein the driving wheel rotates coaxially with the output shaft of the motor, the primary transmission belt is disposed between the driving wheel and the first transmission wheel, the first transmission wheel and the second transmission wheel are disposed coaxially on the transmission shaft, the secondary transmission belt is disposed between the driving wheel and the driven wheel, and the driven wheel is fixed on the gear wheel rotating shaft.
4. The high-speed rotation detection platform of the magnetic encoder according to claim 3, wherein the modules and the numbers of teeth of the driving wheel and the second driving wheel are the same, and the modules and the numbers of teeth of the first driving wheel and the driven wheel are the same.
5. The rotary high-speed testing platform of claim 4, wherein the transmission member further comprises two tensioning mechanisms, a first tensioning mechanism and a second tensioning mechanism, the first tensioning mechanism is disposed on one side of the primary belt, and the second tensioning mechanism is disposed on one side of the secondary belt.
6. The high-speed rotation detecting platform for magnetic encoder according to claim 1, wherein the gear plate mounting plate is fixedly mounted on the gear plate rotating shaft, the gear plate rotating shaft is disposed below the testing platform and penetrates through the testing platform, and the gear plate mounting plate is fixed on the portion of the gear plate rotating shaft extending above the testing platform.
7. The high-speed rotation detecting platform of the magnetic encoder according to claim 6, wherein the gear plate mounting plate is fixed on the gear plate rotating shaft by a gear compression nut, the outer diameter of the gear plate mounting plate is adapted to the inner diameter of the gear plate, and a gear plate positioning step surface is arranged at the outer edge of the gear plate mounting plate.
8. The high-speed rotation detection platform of the magnetic encoder according to claim 7, wherein the reading head adjusting part comprises an X/Y/Z axis fine adjustment sliding table and a reading head fixing plate, the X/Y/Z axis fine adjustment sliding table is installed on the test platform on one side of the gear wheel disc installation plate, and the reading head fixing plate is installed on the top of the X/Y/Z axis fine adjustment sliding table.
9. The high-speed rotation detecting platform of claim 8, wherein the reading head is mounted on a fixing plate of the reading head, and the reading direction is toward the direction of the gear wheel.
10. A magnetic encoder high speed rotation sensing platform as claimed in any of claims 1 to 9 wherein the selection of the servo motors is involved:
according to a disc rotational inertia calculation formula: j =1/2mr
Wherein: j-moment of inertia, unit kg.m
m- -disc mass in kg
r- -disc radius, unit m
Calculating the rotational inertia J1 of the gear disc mounting plate;
calculating the moment of inertia J2 of the gear disc;
the total load inertia of the motor is equal to the sum of the inertia of the gear disc mounting plate and the inertia of the gear disc: j = J1+ J2; and according to the servo motor model selection principle, selecting the load inertia and the motor rotor inertia with the ratio less than or equal to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211398335.4A CN115560793A (en) | 2022-11-09 | 2022-11-09 | High-speed rotation detection platform of magnetic encoder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211398335.4A CN115560793A (en) | 2022-11-09 | 2022-11-09 | High-speed rotation detection platform of magnetic encoder |
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| CN202211398335.4A Pending CN115560793A (en) | 2022-11-09 | 2022-11-09 | High-speed rotation detection platform of magnetic encoder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554806A (en) * | 2023-11-15 | 2024-02-13 | 上海梓一测控技术有限公司 | Motor limit rotation speed testing device |
-
2022
- 2022-11-09 CN CN202211398335.4A patent/CN115560793A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554806A (en) * | 2023-11-15 | 2024-02-13 | 上海梓一测控技术有限公司 | Motor limit rotation speed testing device |
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