CN103994717A - Optical gear measurement device and detection method - Google Patents
Optical gear measurement device and detection method Download PDFInfo
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- CN103994717A CN103994717A CN201410224342.1A CN201410224342A CN103994717A CN 103994717 A CN103994717 A CN 103994717A CN 201410224342 A CN201410224342 A CN 201410224342A CN 103994717 A CN103994717 A CN 103994717A
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- Length Measuring Devices By Optical Means (AREA)
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Abstract
The invention relates to an optical gear measurement device and a detection method. The optical gear measurement device is characterized in that a lathe bed is connected with the ground through a vibration isolation foundation, a work table is fixedly connected with the lathe bed, a gear to be measured is arranged on the work table, an optical length measuring system is fixed on a rotating table, the rotating table can rotate along a perpendicular shaft, the rotating table is installed on a lifting arm, the lifting arm can move along the Z-axis of the perpendicular shaft, the gear to be measured is arranged on the work table, the optical length measuring system is used for measuring the gear to be measured, and data are transmitted to a data processing and communicating system. According to the method, the non-contact type length measurement system, namely a chromatic dispersion confocal displacement sensor or a laser displacement sensor is adopted for accurately measuring precision of the geometric dimension and the shape position of gear parts and shaft parts such as a circular shaft, a spline shaft, a gear and a hob provided with rotating shafts.
Description
Technical field
The present invention relates to a kind of gear optical measuring device and detection method, particularly, for comprising optical measuring device and the detection method of gear at inward turning rotating shaft part, belong to mechanical measurement field.
Background technology
Due to the inherent characteristic of optical measurement, in the time that light beam over-rotation center is measured measured piece, may occur that beam incident angle degree is larger, cause measuring error larger, even for example, because restriction (be similar to hobboing cutter, negative angle appears in its blade) light beam of the geometric configuration of measured piece itself cannot arrive the surperficial situation that measured piece need detect.Existing generating method measurement is merely able to record the relative error of gear, and cannot obtain whole tooth-formation of gear data.
Summary of the invention
The object of the present invention is to provide a kind of gear optical measuring device and detection method, that a kind of to adopt contactless length measurement system be that the burnt displacement transducer of dispersion copolymerization or laser displacement sensor are to gear class, axle class etc. has the part of turning axle as circular shaft, splined shaft, gear, the method for the accurate measurement that the physical dimension of hobboing cutter etc. and shaped position precision are carried out.
Technical scheme of the present invention is achieved in that a kind of gear optical measuring device, by lathe bed, and worktable, Optical length measurement system, turntable, lifting arm, data processing and communication system composition; It is characterized in that: between lathe bed and ground, adopt vibrating isolation foundation to be connected with ground, worktable is fixedly connected with lathe bed, and gear to be measured is placed on worktable; Optical length measurement system is fixed on turntable, and turntable can rotate along Z-axis; Turntable is arranged on lifting arm, and lifting arm can be that Z axis moves along Z-axis; Tested gear is placed on worktable, and Optical length measurement system is measured gear to be measured, then data is sent to data processing and communication system.
For the optical detecting method of gear, it is characterized in that: by gear Optical length measurement device, light beam being adjusted to apart from turntable rotation center certain distance is that eccentric throw meets internal tooth measurement <250mm, and external tooth is measured <200mm; Can be that translation is adjusted certain distance or angle certain Beam rotation is measured, the concrete steps of its detection be as follows:
1) select dissimilar Optical length measurement device according to gear-type, the displacement transducer of Optical length measurement device is fixed on turntable, and turntable synchronous rotary;
2) adopt demarcation annulus to demarcate sensed system parameter, adjust lifting arm, making displacement transducer is that internal tooth is measured <500mm in effective range, external tooth is measured in <400mm, start turntable, start Optical length measurement system simultaneously, gear related data is measured;
3) data processing and communication system obtain after the data of above Optical length measurement systematic survey, calculate the rotation center of gear to be measured on turntable;
4) according to the rotation center of the gear to be measured calculating, measurement data is carried out to coordinate transform, the measurement data of gear to be measured is launched on gear compound graduation circle;
5) result after launching on reference circle according to gear to be measured, is calculated the crucial tooth profile parameter such as the number of teeth, modulus of this gear by data processing and communication system;
6) according to the tooth profile parameter obtaining from gear to be measured, calculated the flank profil of theoretical gear by data processing and communication system, and contrast with gear-profile to be measured, obtain gear form error;
7) distance along Z-direction carrier wheel transverse tooth thickness 1/5-1/3 by displacement transducer, then repeats above-mentioned measuring process, finally obtains gear tooth alignment error;
8) measured, measuring system has been returned to initial position.
The Measurement and Data Processing process of described data processing and communication system is as follows:
1) flank of tooth data that obtained by Optical length measurement system are carried out to pre-service, remove distorted spots and noise spot;
2), after the pre-service of flank of tooth data, calculate gear rotation center by data processing and communication system;
3) according to the gear rotation center calculating, measurement data is carried out to coordinate transform;
4) from measurement data, identify the tooth top of gear to be measured, tooth root, the gear features such as the flank of tooth;
5) according to the gear feature identifying, calculate theoretical form of gear tooth parameter;
6) the profile of tooth data that the theoretical form of gear tooth and actual measurement obtained contrast, and calculate tooth-formation of gear error to be measured;
7) inspection result of calculation, if result of calculation is errorless, determines gear Z-direction displacement according to transverse tooth thickness, drives the displacement transducer of Optical length measurement system to move along Z-direction, duplicate measurements tooth profile parameter;
8), after completing along Z measurement, according to its measurement result, calculate gear tooth alignment error.
Good effect of the present invention is to adopt a kind ofly to make the light beam method that only rotation center is measured by beam deviation center certain distance or by angle certain beam deviation; By adjusting the incident angle of light beam, make light beam can arrive the being tested surface of measured piece, and have good incident angle, thereby obtain high-precision measurement result, can measure secondary gear; Adopt this measuring method, not only can obtain high-precision profile of tooth teeth directional parameter and error thereof, can also measure fine module gear and internal tooth, obtain the complete profile of tooth data of gear, greatly expanded the measurement range of the method for former use.
Brief description of the drawings
Fig. 1 is the structural representation of measuring equipment of the present invention.
Fig. 2 is the schematic diagram with measuring equipment prototype gear a of the present invention.
Fig. 3 is the schematic diagram with measuring equipment prototype gear b of the present invention.
Fig. 4 is the process flow diagram of measuring system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described: as shown in Figure 1, a kind of gear optical measuring device, by lathe bed 1, worktable 2, Optical length measurement system 4, turntable 5, lifting arm 6, data processing and communication system 7 form; It is characterized in that: between lathe bed 1 and ground, adopt vibrating isolation foundation to be connected with ground, worktable 2 is fixedly connected with lathe bed 1, and gear 3 to be measured is placed on worktable 2; Optical length measurement system 4 is fixed on turntable 5, and turntable 5 can rotate along Z-axis; Turntable 5 is arranged on lifting arm 6, and lifting arm 6 can be that Z axis moves along Z-axis; Gear 3 to be measured is placed on worktable 2, and Optical length measurement system 4 is measured gear 3 to be measured, then data is sent to data processing and communication system 7.
For the optical detecting method of gear, it is characterized in that: by gear Optical length measurement device, light beam being adjusted to apart from turntable rotation center certain distance is that eccentric throw meets internal tooth measurement <250mm, and external tooth is measured <200mm; Can be that translation is adjusted certain distance or angle certain Beam rotation is measured, the concrete steps of its detection be as follows as shown in Figure 4:
1) select dissimilar Optical length measurement device according to gear-type, the displacement transducer of Optical length measurement device is fixed on turntable, and turntable synchronous rotary;
2) adopt demarcation annulus to demarcate sensed system parameter, adjust lifting arm, making displacement transducer is that internal tooth is measured <500mm in effective range, external tooth is measured in <400mm, start turntable, start Optical length measurement system simultaneously, gear related data is measured;
3) data processing and communication system obtain after the data of above Optical length measurement systematic survey, calculate the rotation center of gear to be measured on turntable;
4) according to the rotation center of the gear to be measured calculating, measurement data is carried out to coordinate transform, the measurement data of gear to be measured is launched on gear compound graduation circle;
5) result after launching on reference circle according to gear to be measured, is calculated the crucial tooth profile parameter such as the number of teeth, modulus of this gear by data processing and communication system;
6) according to the tooth profile parameter obtaining from gear to be measured, calculated the flank profil of theoretical gear by data processing and communication system, and contrast with gear-profile to be measured, obtain gear form error;
7) distance along Z-direction carrier wheel transverse tooth thickness 1/5-1/3 by displacement transducer, then repeats above-mentioned measuring process, finally obtains gear tooth alignment error;
8) measured, measuring system has been returned to initial position.
The Measurement and Data Processing process of described data processing and communication system is as follows:
1) flank of tooth data that obtained by Optical length measurement system are carried out to pre-service, remove distorted spots and noise spot;
2), after the pre-service of flank of tooth data, calculate gear rotation center by data processing and communication system;
3) according to the gear rotation center calculating, measurement data is carried out to coordinate transform;
4) from measurement data, identify the tooth top of gear to be measured, tooth root, the gear features such as the flank of tooth;
5) according to the gear feature identifying, calculate theoretical form of gear tooth parameter;
6) the profile of tooth data that the theoretical form of gear tooth and actual measurement obtained contrast, and calculate tooth-formation of gear error to be measured;
7) inspection result of calculation, if result of calculation is errorless, determines gear Z-direction displacement according to transverse tooth thickness, drives the displacement transducer of Optical length measurement system to move along Z-direction, duplicate measurements tooth profile parameter;
8), after completing along Z measurement, according to its measurement result, calculate gear tooth alignment error.
The Optical length measurement system 4 being fixed on when work on turntable 5 is sent light beam, is radiated on gear 3 to be measured, and displacement transducer and controller thereof obtain the relative size of point of irradiation to displacement transducer transmitting terminal as Optical length measurement system 4.Along with turntable 5 rotates around its rotation center, simultaneous displacement sensor prolonged exposure is measured, thereby obtains physical dimension and the shaped position precision of gear 3 to be measured.
As shown in 2,3 figure, adopt and a kind ofly will cross beam deviation center certain distance L or the α that rotates a certain angle of gear rotation center, make light beam only rotation center measure.Displacement transducer a sends light beam b, by adjusting the incident angle of light beam b, light beam b can be arrived and be fixed on the being tested surface of the gear c to be measured on turntable d, and have good incident angle, thereby obtain high-precision measurement result.Then carry out data calculating by data processing and communication system 7, finally obtain physical dimension and the shaped position precision of gear 3 to be measured.
Embodiment 1:
The beam deviation gear 3 rotation center certain distances to be measured that displacement transducer is sent, and gear 3 to be measured is measured: (its number of teeth is 30, and modulus is 3, and transverse tooth thickness is 20mm)
1) by the size (tip diameter is Φ 110mm) of measurer bigness scale gear 3 to be measured,
2) gear 3 to be measured is placed on worktable 2,
3) adjust lifting arm 6, light beam can be irradiated on gear 3 to be measured,
4) by displacement transducer translation 33.1mm,
5) start turntable 5, Optical length measurement system 4 starts to measure, and image data, after data acquisition, will obtain data transmission to data processing and communication system 7;
6) lifting arm 6 vertically moves down 3mm, 6mm, 9mm, 12mm, respectively repeated acquisition data;
7) drive lifting arm 6 to make displacement transducer homing;
8) data processing and communication system 7, to the data analysis gathering, obtain the point circle of gear 3 to be measured, dedendum circle, the number of teeth, modulus, and the relevant profile of tooth profile of tooth teeth directional parameter such as tooth surface error and teeth directional.
Embodiment 2:
The beam deviation gear 3 rotation center certain distances to be measured that displacement transducer is sent, and gear 3 to be measured is measured: (its number of teeth is 60, and modulus is 4, and transverse tooth thickness is 30mm)
1) by the size (tip diameter is Φ 142.6mm) of measurer bigness scale gear 3 to be measured,
2) gear 3 to be measured is placed on worktable 2,
3) adjust lifting arm 6, light beam can be irradiated on gear 3 to be measured,
4) displacement transducer is rotated to 30 ° of angles,
5) start turntable 5, Optical length measurement system 4 starts to measure, and image data, after data acquisition, will obtain data transmission to data processing and communication system 7;
6) lifting arm 6 vertically moves down 3mm, 6mm, and 9mm, 12mm, 15mm, 18mm is repeated acquisition data respectively;
7) drive lifting arm 6 to make displacement transducer homing;
8) data processing and communication system 7, to the data analysis gathering, obtain the point circle of gear 3 to be measured, dedendum circle, the number of teeth, modulus, and the relevant profile of tooth profile of tooth teeth directional parameter such as tooth surface error and teeth directional.
Claims (3)
1. a gear optical measuring device, by lathe bed, worktable, Optical length measurement system, turntable, lifting arm, data processing and communication system composition; It is characterized in that: between lathe bed and ground, adopt vibrating isolation foundation to be connected with ground, worktable is fixedly connected with lathe bed, and gear to be measured is placed on worktable; Optical length measurement system is fixed on turntable, and turntable can rotate along Z-axis; Turntable is arranged on lifting arm, and lifting arm can be that Z axis moves along Z-axis; Tested gear is placed on worktable, and Optical length measurement system is measured gear to be measured, then data is sent to data processing and communication system.
2. for the optical detecting method of gear, it is characterized in that: by gear Optical length measurement device, light beam being adjusted to apart from turntable rotation center certain distance is that eccentric throw meets internal tooth measurement <250mm, and external tooth is measured <200mm; Can be that translation is adjusted certain distance or angle certain Beam rotation is measured, the concrete steps of its detection be as follows:
1) select dissimilar Optical length measurement device according to gear-type, the displacement transducer of Optical length measurement device is fixed on turntable, and turntable synchronous rotary;
2) adopt demarcation annulus to demarcate sensed system parameter, adjust lifting arm, making displacement transducer is that internal tooth is measured <500mm in effective range, external tooth is measured in <400mm, start turntable, start Optical length measurement system simultaneously, gear related data is measured;
3) data processing and communication system obtain after the data of above Optical length measurement systematic survey, calculate the rotation center of gear to be measured on turntable;
4) according to the rotation center of the gear to be measured calculating, measurement data is carried out to coordinate transform, the measurement data of gear to be measured is launched on gear compound graduation circle;
5) result after launching on reference circle according to gear to be measured, is calculated the crucial tooth profile parameter such as the number of teeth, modulus of this gear by data processing and communication system;
6) according to the tooth profile parameter obtaining from gear to be measured, calculated the flank profil of theoretical gear by data processing and communication system, and contrast with gear-profile to be measured, obtain gear form error;
7) distance along Z-direction carrier wheel transverse tooth thickness 1/5-1/3 by displacement transducer, then repeats above-mentioned measuring process, finally obtains gear tooth alignment error;
8) measured, measuring system has been returned to initial position.
3. according to a kind of gear optical measuring device described in claim 2, it is characterized in that the Measurement and Data Processing process of described data processing and communication system is as follows:
1) flank of tooth data that obtained by Optical length measurement system are carried out to pre-service, remove distorted spots and noise spot;
2), after the pre-service of flank of tooth data, calculate gear rotation center by data processing and communication system;
3) according to the gear rotation center calculating, measurement data is carried out to coordinate transform;
4) from measurement data, identify the tooth top of gear to be measured, tooth root, the gear features such as the flank of tooth;
5) according to the gear feature identifying, calculate theoretical form of gear tooth parameter;
6) the profile of tooth data that the theoretical form of gear tooth and actual measurement obtained contrast, and calculate tooth-formation of gear error to be measured;
7) inspection result of calculation, if result of calculation is errorless, determines gear Z-direction displacement according to transverse tooth thickness, drives the displacement transducer of Optical length measurement system to move along Z-direction, duplicate measurements tooth profile parameter;
8), after completing along Z measurement, according to its measurement result, calculate gear tooth alignment error.
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| CN201410224342.1A CN103994717B (en) | 2014-05-24 | 2014-05-24 | Optical gear measurement device and detection method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729409A (en) * | 2015-04-01 | 2015-06-24 | 航天精工股份有限公司 | Fastening piece local heat treatment area size measuring system and measuring method thereof |
| CN104985483A (en) * | 2015-06-05 | 2015-10-21 | 南京工程学院 | Method for improving on-machine measuring precision of pitch deviation of large-sized gears |
| CN106813584A (en) * | 2017-03-31 | 2017-06-09 | 燕山大学 | Spiral bevel gear key parameter laser detection system and its detection method |
| CN107560584A (en) * | 2017-09-22 | 2018-01-09 | 江门市力泰科技有限公司 | A kind of driving gear part special gauge |
| US10533843B2 (en) | 2018-01-11 | 2020-01-14 | Ford Motor Company | Method for measuring a true concentricity of a rotating shaft |
| CN111492199A (en) * | 2017-12-15 | 2020-08-04 | 雷肖尔股份公司 | Method and device for measuring a rolling tool |
| CN111721230A (en) * | 2019-03-20 | 2020-09-29 | 科令志因伯格有限公司 | Optical measuring method |
| CN112304240A (en) * | 2020-10-19 | 2021-02-02 | 西安工程大学 | Bevel gear tooth surface morphology measuring light path and method based on laser interferometry |
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| CN101561349A (en) * | 2009-06-08 | 2009-10-21 | 爱佩仪中测（成都）精密仪器有限公司 | Large gear detecting method and detecting device |
| CN102322796A (en) * | 2011-07-20 | 2012-01-18 | 唐大春 | Laser detection device and method for gear parameters |
| US20130326891A1 (en) * | 2012-06-12 | 2013-12-12 | Solar Turbines Incorporated | Shaft alignment tools and methods |
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2014
- 2014-05-24 CN CN201410224342.1A patent/CN103994717B/en not_active Expired - Fee Related
Patent Citations (3)
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| CN101561349A (en) * | 2009-06-08 | 2009-10-21 | 爱佩仪中测（成都）精密仪器有限公司 | Large gear detecting method and detecting device |
| CN102322796A (en) * | 2011-07-20 | 2012-01-18 | 唐大春 | Laser detection device and method for gear parameters |
| US20130326891A1 (en) * | 2012-06-12 | 2013-12-12 | Solar Turbines Incorporated | Shaft alignment tools and methods |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729409A (en) * | 2015-04-01 | 2015-06-24 | 航天精工股份有限公司 | Fastening piece local heat treatment area size measuring system and measuring method thereof |
| CN104729409B (en) * | 2015-04-01 | 2017-12-22 | 航天精工股份有限公司 | Fastener localized heat treat area Size Measuring System and its measuring method |
| CN104985483A (en) * | 2015-06-05 | 2015-10-21 | 南京工程学院 | Method for improving on-machine measuring precision of pitch deviation of large-sized gears |
| CN106813584A (en) * | 2017-03-31 | 2017-06-09 | 燕山大学 | Spiral bevel gear key parameter laser detection system and its detection method |
| CN107560584A (en) * | 2017-09-22 | 2018-01-09 | 江门市力泰科技有限公司 | A kind of driving gear part special gauge |
| CN107560584B (en) * | 2017-09-22 | 2024-05-28 | 江门市力泰科技有限公司 | Special gauge for driving gear part |
| CN111492199A (en) * | 2017-12-15 | 2020-08-04 | 雷肖尔股份公司 | Method and device for measuring a rolling tool |
| US10533843B2 (en) | 2018-01-11 | 2020-01-14 | Ford Motor Company | Method for measuring a true concentricity of a rotating shaft |
| CN111721230A (en) * | 2019-03-20 | 2020-09-29 | 科令志因伯格有限公司 | Optical measuring method |
| CN111721230B (en) * | 2019-03-20 | 2024-06-04 | 科令志因伯格有限公司 | Optical measuring method |
| CN112304240A (en) * | 2020-10-19 | 2021-02-02 | 西安工程大学 | Bevel gear tooth surface morphology measuring light path and method based on laser interferometry |
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