CN104776798A - Measurement device and measurement method of boundary dimension and geometric tolerance of cylindrical workpiece - Google Patents
Measurement device and measurement method of boundary dimension and geometric tolerance of cylindrical workpiece Download PDFInfo
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- CN104776798A CN104776798A CN201510056242.7A CN201510056242A CN104776798A CN 104776798 A CN104776798 A CN 104776798A CN 201510056242 A CN201510056242 A CN 201510056242A CN 104776798 A CN104776798 A CN 104776798A
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Abstract
The invention provides a measurement device and a measurement method of a boundary dimension and a geometric tolerance of a cylindrical workpiece. The measurement device comprises a workbench, a fixture, a fixture driving device, an angle inductor, a laser displacement sensor, a measurement driving device, a position inductor and a processor. Compared with the prior art, the measurement device has significant advantages, utilizes measurement instruments such as the laser displacement sensor, a grating ruler and an encoder, processes data via the processor, establishes a mathematical model of the measured workpiece in conjunction with a numerical computation method, can measure the boundary dimension and the geometric tolerance such as cylindricity and verticality of the cylindrical workpiece together, has the characteristics of high precision and speed, achieves full-automatic measurement and reduces influence of human factors on measurement results.
Description
Technical field
The present invention relates to a kind of workpiece size measurement mechanism and measuring method, particularly a kind of cylindrical workpiece physical dimension and form and position tolerance measurement mechanism and measuring method thereof.
Background technology
Along with the development of industrial technology, workpiece demand that is complicated, precise treatment is also increasing, and then it is also more and more higher to the detection demand of these workpiece processing quality, and improving constantly along with machining precision, existing measuring method can not meet the demand of measurement, detection measurement level low for a long time is also govern the Precision Machining industry of China, is even also using slide calliper rule, milscale, dial gauge equally accurate is low, measuring error is large survey instrument to the measurement of precision component.Also Technology of Precision Measurement is furtherd investigate both at home and abroad, Technology of Precision Measurement is the comprehensive cross discipline that light harvesting, electronics, sensor, image, manufacture and a computer technology are integrated, relate to ambit widely, the support of its numerous related discipline of development need.In modern industry manufacturing technology and scientific research, surveying instrument has precise treatment, integrated, intelligentized development trend.The precision measurement mode generally adopted at present uses three-coordinates measuring machine, its measuring accuracy is high, strong adaptability, nearly all form and position tolerance can be detected, but it is relatively high to environmental requirement, also need operating personnel to have certain theoretical level and functipnal capability, and it is expensive, is not suitable for applying.
Summary of the invention
For solving the problem, the invention provides a kind of cylindrical workpiece physical dimension and form and position tolerance measurement mechanism and measuring method thereof, its measuring speed is fast, precision is high, automatically can complete and measure cylindrical workpiece physical dimension and form and position tolerance.
A kind of cylindrical workpiece physical dimension and form and position tolerance measurement mechanism, comprise
Worktable, described worktable is fixed on ground, and it has the upper surface of a level;
Fixture, described fixture has a surface of contact contacted with tested cylinder workpiece bottom, and described surface of contact and described worktable upper surface be arranged in parallel;
Fixture drive unit, described fixture drive unit drives described fixture along the turning axle vertical with described worktable upper surface relative to described worktable rotary;
Angle inductor, described angle inductor can respond to the angle value that described fixture turns under described fixture drive unit drives;
Laser displacement sensor, the laser beam that described laser displacement sensor is launched forms the light of a level on measured workpiece surface, described laser displacement sensor measures the position of the point on this light;
Measure drive unit, described measurement drive unit drives described laser displacement sensor along moving perpendicular to described worktable upper surface direction;
Position sensor, described position sensor can sense described laser displacement sensor under described measurement drive unit drives in the position of vertical direction;
Processor, described processor can receive the data that described laser displacement sensor, angle inductor and position sensor return, and carries out analytical calculation.
Preferably, described fixture is Tridactyle pneumatic or oild chuck.
Preferably, described angle inductor is scrambler.
Preferably, described position sensor is grating scale.
Preferably, described measurement drive unit comprises servomotor and line slideway, and described line slideway is vertically fixed on described worktable, and the slide block on described line slideway is connected with described laser displacement sensor.
Preferably, whether the near surface of described fixture and absorption surface is provided with detection has workpiece to be placed into the workpiece inductor of described chucking surface.
Preferably, described workpiece inductor is proximity switch or travel switch.
Preferably, described worktable one side is provided with a baffle plate, after described baffle plate is positioned at described laser displacement sensor and measured workpiece, the laser beam that described laser displacement sensor is launched all is radiated on described baffle plate except being radiated at except on measured workpiece.
Present invention also offers a kind of cylindrical workpiece physical dimension and form and position tolerance measuring method, use above-mentioned cylindrical workpiece physical dimension and form and position tolerance measurement mechanism, described workpiece rotates under the drive of described fixture, the vertically movement from top to bottom under described measurement drive unit drives of described laser displacement sensor, the position of measurement and angle value are fed back to described processor by described position sensor and described angle inductor, the information of the point on the measured workpiece measured is passed to described processor by described laser displacement sensor simultaneously, described processor utilizes these information, numerical computation method is adopted to simulate the math equation of measured workpiece, thus obtain measurement result.
Preferably, described numerical computation method is least square method.
The invention provides a kind of cylindrical workpiece physical dimension and form and position tolerance measurement mechanism and measuring method thereof, compared with prior art, there is significant advantage, the present invention utilizes laser displacement sensor, grating scale, the surveying instruments such as scrambler, by processor to the process of data and Binding number value calculating method, complete the foundation of measured workpiece mathematical model, physical dimension and cylindricity can be measured in the lump, the form and position tolerances such as verticality, there is precision high, fireballing feature, and it can carry out all automatic measurement, only need operating personnel by measured workpiece as on fixture, decrease the impact of human factor on measurement result, also reduce labour intensity, and do not need operator to have very high technical ability.
Accompanying drawing explanation
Fig. 1 is the structural drawing of cylindrical workpiece physical dimension of the present invention and form and position tolerance measurement mechanism.
Fig. 2 is the data image of cylindrical workpiece physical dimension of the present invention and form and position tolerance measurement mechanism and measuring method laser beam irradiation laser displacement sensor feedback when baffle plate thereof.
Fig. 3 be cylindrical workpiece physical dimension of the present invention and form and position tolerance measurement mechanism and measuring method light beam irradiation thereof on workpiece time laser displacement sensor feedback data image.
Embodiment
Concrete elaboration is done below in conjunction with the technical scheme of specific embodiment to cylindrical workpiece physical dimension of the present invention and form and position tolerance measurement mechanism and measuring method thereof.
As shown in Figure 1, a kind of cylindrical workpiece physical dimension of the present invention and form and position tolerance measurement mechanism comprise worktable 1, fixture 2, fixture drive unit 3, angle inductor 4, laser displacement sensor 5, measure drive unit 6, position sensor 7 and processor 8.
Wherein worktable 1 is fixed on ground, it has the upper surface of a level, fixture 2 is installed on worktable 1, fixture 2 has a surface of contact contacted with tested cylindrical workpiece 9 bottom surface, this surface of contact and worktable upper surface be arranged in parallel, what namely tested cylindrical workpiece 9 was vertical is positioned on fixture 2, and be fixedly clamped by fixture 2, fixture 2 preferred embodiment for adopting Tridactyle pneumatic or oild chuck, it adopts pressurized air or hydraulic oil as the power clamping tested cylindrical workpiece 9, and can High Rotation Speed, there is good reliability.Fixture drive unit 3 is installed on the below of worktable 1, and it drives fixture 2 to rotate along the turning axle vertical with worktable 1 upper surface relative to worktable 1, and then drives tested cylindrical workpiece 9 to rotate.Laser displacement sensor 5 is major meters devices of invention, the laser beam irradiation that laser displacement sensor 5 is launched is at tested cylinder surface of the work, the light of a level can be formed, laser displacement sensor 5 can measure the position of the point on this light, its measuring accuracy is high, speed fast, and the interference such as the electromagnetism be subject to is very little.Measure drive unit 6 and be used for driving machine laser displacement sensor 5 vertically movement from top to bottom, make laser displacement sensor 5 can the size of the whole tested cylindrical workpiece 9 of top-down measurement, preferably measure drive unit 6 and comprise servomotor and line slideway, line slideway vertically fixing on the table 1, the slide block on line slideway is connected with laser displacement sensor 5.Angular displacement inductor 4 is installed on fixture 2, be used for the angle that measured material 2 turns under the driving of fixture drive unit 3, it is preferred embodiment for adopting scrambler, scrambler be signal or data are carried out work out, being converted to can in order to the equipment of the signal form of communication, transmission and storage.Scrambler converts electric signal to angular displacement, then this electric signal is transformed into count pulse, and the angular displacement of being multiplied by individual pulse representative by the number of pulse is exactly the size of angular displacement of rotating.Position sensor 7 is installed on laser displacement sensor 5 and is used for detection laser displacement transducer 5 under the driving of measuring drive unit 6 in the position of vertical direction, its preferred embodiment adopts grating scale, grating scale is the measurement feedback assembly of the optical principle work utilizing grating, often be applied in the closed loop servo system of numerically-controlled machine, can be used as the detection of straight-line displacement.It measures the signal exported is digit pulse, and have sensing range large, accuracy of detection is high, the feature of fast response time.Processor 8 can receive the data that described laser displacement sensor 5, angle inductor 4 and position sensor 7 return, and carries out analytical calculation.
Further, the present invention also comprises workpiece inductor 10, and it is arranged in fixture 2, and at the near surface contacted with tested cylindrical workpiece 9, it can sense whether tested cylindrical workpiece 9 has been positioned on fixture 2, and it preferably adopts proximity switch or travel switch.
In addition, one side of worktable 1 of the present invention is provided with a baffle plate 11, after baffle plate 11 is positioned at described laser displacement sensor 5 and tested cylindrical workpiece 9, the laser beam that laser displacement sensor 5 is launched all is radiated on baffle plate 11 except being radiated at except on tested cylindrical workpiece 9.
A fixing three-dimensional coordinate system oxyz need be set up during measurement, z-axis is the turning axle of fixture 2, xoy plane is the face that fixture 2 contacts with tested cylindrical workpiece 9, first tested cylindrical workpiece 9 is vertically placed on fixture 2, workpiece inductor 10 can sense that tested cylindrical workpiece 9 is put well, activated clamps 2 clamps tested cylindrical workpiece 9, now laser displacement sensor 5 is positioned at top, then measure drive unit 6 driving laser displacement transducer 5 to move from top to bottom along z-axis, fixture drive unit 3 drives fixture 2 to rotate along z-axis, when the laser beam that laser displacement sensor 5 is launched is above measured workpiece, laser beam full illumination is on baffle plate, form a horizontal light, feed back to the image of processor 8 as shown in Figure 2, it is a horizontal linear, represent the distance of the point on light for this reason to laser displacement sensor 5, because baffle plate is a flat board, therefore each point on light is equal to the distance of laser displacement sensor 5, so image is a straight line.Laser displacement sensor 5 continues to move downward, when laser beam irradiation is to tested cylindrical workpiece 9, laser displacement sensor 5 feeds back to the image of processor 8 as shown in Figure 3, image two ends are straight line, centre is a semicircle, being expressed as two end portions is be irradiated to the distance of the point on baffle plate 11 to laser displacement sensor 5, middle semicircular part is divided into and is irradiated to the distance of the point on tested cylindrical workpiece 9 to laser displacement sensor 5, processor 8 is sampled in semi-circular image, gather some points and be converted in xoy coordinate system, and these coordinates in z-axis are recorded by position sensor 7 and feed back to processor 8, thus obtain these coordinates in oxyz coordinate system.Angle inductor 4 is measured fixture and to be turned clockwise angle [alpha] along z-axis, and feed back to processor 8, measurement image is now fed back to processor 8 by laser displacement sensor 5, processor 8 sampling obtains the coordinate (x of this time point in xoy plane, y), coordinate when not rotating (x ', y ') is converted to by following formula.
x′＝x*cos(α)+(y-ry0)*sin(α)
y′＝-x*sin(α)+(y-ry0)*cos(α)
The z-axis coordinate of these same points is recorded by position sensor 7.Processor 8, according to the coordinate of the some points recorded, adopts and does little square law, set up the mathematical model of this tested cylindrical workpiece 9 under oxyz coordinate system, so record its diameter, highly, the value of cylindricity, verticality.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. cylindrical workpiece physical dimension and a form and position tolerance measurement mechanism, is characterized in that, comprise
Worktable, described worktable is fixed on ground, and it has the upper surface of a level;
Fixture, described fixture has a surface of contact contacted with tested cylinder workpiece bottom, and described surface of contact and described worktable upper surface be arranged in parallel;
Fixture drive unit, described fixture drive unit drives described fixture along the turning axle vertical with described worktable upper surface relative to described worktable rotary;
Angle inductor, described angle inductor can respond to the angle value that described fixture turns under described fixture drive unit drives;
Laser displacement sensor, the laser beam that described laser displacement sensor is launched forms the light of a level on measured workpiece surface, described laser displacement sensor measures the position of the point on this light;
Measure drive unit, described measurement drive unit drives described laser displacement sensor along moving perpendicular to described worktable upper surface direction;
Position sensor, described position sensor can sense described laser displacement sensor under described measurement drive unit drives in the position of vertical direction;
Processor, described processor can receive the data that described laser displacement sensor, angle inductor and position sensor return, and carries out analytical calculation.
2. cylindrical workpiece physical dimension according to claim 1 and form and position tolerance measurement mechanism, is characterized in that, described fixture is Tridactyle pneumatic or oild chuck.
3. cylindrical workpiece physical dimension according to claim 1 and form and position tolerance measurement mechanism, is characterized in that, described angle inductor is scrambler.
4. cylindrical workpiece physical dimension according to claim 1 and form and position tolerance measurement mechanism, is characterized in that, described position sensor is grating scale.
5. cylindrical workpiece physical dimension according to claim 1 and form and position tolerance measurement mechanism, it is characterized in that, described measurement drive unit comprises servomotor and line slideway, described line slideway is vertically fixed on described worktable, and the slide block on described line slideway is connected with described laser displacement sensor.
6. the cylindrical workpiece physical dimension according to any one of claim 1-5 and form and position tolerance measurement mechanism, is characterized in that, whether the near surface of described fixture and absorption surface is provided with detection has workpiece to be placed into the workpiece inductor of described chucking surface.
7. cylindrical workpiece physical dimension according to claim 5 and form and position tolerance measurement mechanism, is characterized in that, described workpiece inductor is proximity switch or travel switch.
8. cylindrical workpiece physical dimension according to claim 6 and form and position tolerance measurement mechanism, it is characterized in that, described worktable one side is provided with a baffle plate, after described baffle plate is positioned at described laser displacement sensor and measured workpiece, the laser beam that described laser displacement sensor is launched all is radiated on described baffle plate except being radiated at except on measured workpiece.
9. a cylindrical workpiece physical dimension and form and position tolerance measuring method, it is characterized in that, use claim 1, 2, 3, 4, 5, 7, cylindrical workpiece physical dimension according to any one of 8 and form and position tolerance measurement mechanism, described workpiece rotates under the drive of described fixture, the vertically movement from top to bottom under described measurement drive unit drives of described laser displacement sensor, the position of measurement and angle value are fed back to described processor by described position sensor and described angle inductor, the information of the point on the measured workpiece measured is passed to described processor by described laser displacement sensor simultaneously, described processor utilizes these information, numerical computation method is adopted to simulate the math equation of measured workpiece, thus obtain measurement result.
10. cylindrical workpiece physical dimension as claimed in claim 9 and form and position tolerance measuring method, it is characterized in that, described numerical computation method is least square method.
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| CN201510056242.7A CN104776798B (en) | 2015-02-04 | 2015-02-04 | Cylindrical workpiece appearance and size and form and position tolerance measurement apparatus and its measuring method |
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| CN201510056242.7A CN104776798B (en) | 2015-02-04 | 2015-02-04 | Cylindrical workpiece appearance and size and form and position tolerance measurement apparatus and its measuring method |
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Cited By (22)
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| CN105571487A (en) * | 2015-09-29 | 2016-05-11 | 浙江万里扬股份有限公司 | Position detector applicable to automobile transmission welding rocker parts |
| CN106197355A (en) * | 2016-07-04 | 2016-12-07 | 周锦亮 | A kind of table device for product design detection |
| CN106352813A (en) * | 2016-10-10 | 2017-01-25 | 江苏理工学院 | Sensing-technology-based shaft workpiece measurement device and measurement method thereof |
| CN106556358A (en) * | 2016-11-23 | 2017-04-05 | 西安航天计量测试研究所 | A kind of barrel swivel part installs concentricity high-speed adjustment device and measuring method |
| CN106595495A (en) * | 2016-12-23 | 2017-04-26 | 长沙理工大学 | Optical displacement measurement system |
| CN107152907A (en) * | 2017-05-31 | 2017-09-12 | 江苏理工学院 | The measurement apparatus and method of a kind of shaft-like workpiece |
| CN107218885A (en) * | 2017-05-31 | 2017-09-29 | 江苏理工学院 | A kind of cylindrical workpiece measurement apparatus and method based on hall sensor |
| CN107917729A (en) * | 2017-12-22 | 2018-04-17 | 无锡市创恒机械有限公司 | A kind of testing agency |
| CN108534678A (en) * | 2018-04-25 | 2018-09-14 | 湖南工业大学 | Rock sample geometrical defect measuring device |
| CN109000610A (en) * | 2018-07-25 | 2018-12-14 | 厦门百霖净水科技有限公司 | A kind of detection device and measurement method measuring contraction distortion |
| CN109540032A (en) * | 2019-01-12 | 2019-03-29 | 吉林大学 | A kind of non-contact laser detection revolving body cross section profile pattern error device |
| CN109696138A (en) * | 2019-03-01 | 2019-04-30 | 中国计量大学 | Cylindricity detection device and its eccentric calibration method |
| CN109916334A (en) * | 2019-04-19 | 2019-06-21 | 上海申密机电设备有限公司 | Quick flexible 3 D detection system is processed in the automation of weather strip for automobile mechanical hand |
| CN110553589A (en) * | 2019-10-22 | 2019-12-10 | 蓝思智能机器人(长沙)有限公司 | Dimension measuring device, dimension measuring method and dimension measuring system |
| CN110586690A (en) * | 2019-10-22 | 2019-12-20 | 浙江西沃电梯有限公司 | Elevator guide rail alignment detection device |
| CN111288908A (en) * | 2020-03-25 | 2020-06-16 | 日立电梯电机（广州）有限公司 | Roundness detection system and method |
| CN111707213A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Cylindricity measuring method for automobile composite material molded part |
| CN111707210A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Device for measuring roundness and cylindricity of automobile composite material molded part |
| CN111707209A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Roundness measuring method for automobile composite material molded part |
| CN111707211A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Roundness and cylindricity measuring device for automobile composite material molded part |
| CN111707214A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Line profile measuring device and method for automobile composite material molded part |
| CN109696138B (en) * | 2019-03-01 | 2024-04-09 | 中国计量大学 | Cylindricity detection device and eccentric calibration method thereof |
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| CN105571487A (en) * | 2015-09-29 | 2016-05-11 | 浙江万里扬股份有限公司 | Position detector applicable to automobile transmission welding rocker parts |
| CN106197355A (en) * | 2016-07-04 | 2016-12-07 | 周锦亮 | A kind of table device for product design detection |
| CN106352813A (en) * | 2016-10-10 | 2017-01-25 | 江苏理工学院 | Sensing-technology-based shaft workpiece measurement device and measurement method thereof |
| CN106556358A (en) * | 2016-11-23 | 2017-04-05 | 西安航天计量测试研究所 | A kind of barrel swivel part installs concentricity high-speed adjustment device and measuring method |
| CN106595495A (en) * | 2016-12-23 | 2017-04-26 | 长沙理工大学 | Optical displacement measurement system |
| CN107218885A (en) * | 2017-05-31 | 2017-09-29 | 江苏理工学院 | A kind of cylindrical workpiece measurement apparatus and method based on hall sensor |
| CN107152907A (en) * | 2017-05-31 | 2017-09-12 | 江苏理工学院 | The measurement apparatus and method of a kind of shaft-like workpiece |
| CN107917729A (en) * | 2017-12-22 | 2018-04-17 | 无锡市创恒机械有限公司 | A kind of testing agency |
| CN108534678A (en) * | 2018-04-25 | 2018-09-14 | 湖南工业大学 | Rock sample geometrical defect measuring device |
| CN109000610A (en) * | 2018-07-25 | 2018-12-14 | 厦门百霖净水科技有限公司 | A kind of detection device and measurement method measuring contraction distortion |
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| CN109696138A (en) * | 2019-03-01 | 2019-04-30 | 中国计量大学 | Cylindricity detection device and its eccentric calibration method |
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| CN111707209A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Roundness measuring method for automobile composite material molded part |
| CN111707213A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Cylindricity measuring method for automobile composite material molded part |
| CN111707210A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Device for measuring roundness and cylindricity of automobile composite material molded part |
| CN111707211A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Roundness and cylindricity measuring device for automobile composite material molded part |
| CN111707214A (en) * | 2019-03-18 | 2020-09-25 | 江苏理工学院 | Line profile measuring device and method for automobile composite material molded part |
| CN111707211B (en) * | 2019-03-18 | 2022-03-29 | 江苏理工学院 | Roundness and cylindricity measuring device for automobile composite material molded part |
| CN109916334B (en) * | 2019-04-19 | 2021-03-26 | 上海申密机电设备有限公司 | Automatic processing and rapid flexible three-dimensional detection system for automobile sealing strip robot |
| CN109916334A (en) * | 2019-04-19 | 2019-06-21 | 上海申密机电设备有限公司 | Quick flexible 3 D detection system is processed in the automation of weather strip for automobile mechanical hand |
| CN110586690A (en) * | 2019-10-22 | 2019-12-20 | 浙江西沃电梯有限公司 | Elevator guide rail alignment detection device |
| CN110553589A (en) * | 2019-10-22 | 2019-12-10 | 蓝思智能机器人(长沙)有限公司 | Dimension measuring device, dimension measuring method and dimension measuring system |
| CN110586690B (en) * | 2019-10-22 | 2021-07-16 | 浙江西沃电梯有限公司 | Elevator guide rail alignment detection device |
| CN111288908A (en) * | 2020-03-25 | 2020-06-16 | 日立电梯电机（广州）有限公司 | Roundness detection system and method |
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