CN205049111U - Diameter of axle measuring device based on laser displacement sensor - Google Patents
Diameter of axle measuring device based on laser displacement sensor Download PDFInfo
- Publication number
- CN205049111U CN205049111U CN201520820105.1U CN201520820105U CN205049111U CN 205049111 U CN205049111 U CN 205049111U CN 201520820105 U CN201520820105 U CN 201520820105U CN 205049111 U CN205049111 U CN 205049111U
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- CN
- China
- Prior art keywords
- displacement sensor
- laser displacement
- measurement
- axle
- diameter
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Abstract
The utility model discloses a diameter of axle measuring device based on laser displacement sensor, include that base, dress clamp and put and the computer, install X to one -dimensional guide rail and XY two -dimensional translation table on the base, be fixed with first measurement bay on the base, install a laser displacement sensor on the first measurement bay, be equipped with the second measurement bay on the guide rail, install the 2nd laser displacement sensor on the second measurement bay, the coaxial collineation of rays first, two laser displacement sensor, the dress clamps and puts including bearing frame, swinging boom and lock sleeve, is surveyed the axle and can lock on the swinging boom, and the swinging boom is articulated with the bearing frame, can wind the X axle at yOZ plane internal rotation, first, two laser displacement sensor are connected with computer communication. The dual sensor who utilizes the diameter measures the diameter of axle, surveyed the diameter of axle and passed through laser beam perpendicularly, utilize the comparison measurement method to improve the measuring range of sensor. The utility model discloses measuring range is big, the commonality is strong, measurement accuracy is high to can provide concrete measured value.
Description
Technical field
The utility model belongs to measuring method and the measurement mechanism of axial workpiece, particularly a kind of contactless diameter measurement device for commercial measurement.
Background technology
How fast, accurately, efficiently axial workpiece is one of part the most common in machining, complete measurement task, and can be competent at again the detection of different size axle, be a problem demanding prompt solution simultaneously.At present, in actual production process, the surveying instrument being commonly used to diameter of axle detection has: vernier caliper, go-no go gauge, air-gauge etc.
Usually, a processing repeated measurement often of an axial workpiece, regulates the process of the depth of cut repeatedly, and vernier caliper is then convenient, fast with its measurement, becomes diameter measurement instrument the most general in production run.But vernier caliper is manual measurement means, can cause the out of true of measuring outside diameter data unavoidably.In addition, the restriction of the tested amount efficiency of vernier caliper, is difficult to competent at large batch in detecting.
It is one very convenient, effective detection means in typical products in mass production detects that go-no go gauge detects, and measure efficiency high, accuracy is good.But the bound of the corresponding part tolerance band of go-no go gauge, specificity is strong, no doubt good during large batch of detection, but processes for the part of short run, if adopt go-no go gauge to detect, increases into product cost undoubtedly, loses more than gain.And go-no go gauge can only provide seized part and whether be in margin tolerance, the explicit value of accessory size can not be provided.For typical products in mass production, the distribution of size can not be provided.In addition, it is contact type measurement that go-no go gauge detects, and has both existed and has scratched the risk of workpiece, also can because of the wearing and tearing of long-term work, irrecoverable and lose original effect.
Air-gauge is then a kind of contactless detection means, and carry out the gap of perception measured workpiece relative to standard component by the size measuring air pressure, measuring accuracy is high.But in actual measurement, measurement standard part needs and measured piece adjoining dimensions, even a kind of non-contact measurement, in calibration procedures, also inevitably produces collision, affects measurement effect.In addition, air-gauge measurement range is little, and versatility is poor.
Utility model content
For the shortcoming of prior art surveying instrument, the utility model provides a kind of can realize that measurement range is large, highly versatile, can provide the high-precision diameter measurement device based on laser displacement sensor of concrete measured value, thus overcome the Problems existing such as existing electronic caliper, go-no go gauge, air-gauge, facilitate commercial measurement to use.
In order to solve the problems of the technologies described above, a kind of diameter measurement device based on laser displacement sensor that the utility model proposes comprises pedestal, chucking device and computing machine, described pedestal is provided with X to one dimension guide rail and XY two-dimension translational platform; Described pedestal is fixed with the first measurement bay, described first measurement bay is provided with the first laser displacement sensor; Described X is equipped with on one dimension guide rail can the second measurement bay along from X to movement, and described second measurement bay is provided with the second laser displacement sensor; The coaxial conllinear of measurement ray of described first laser displacement sensor and described second laser displacement sensor; Described chucking device comprises bearing seat, pivot arm and lock sleeve, described bearing seat is arranged on described XY two-dimension translational platform, one end of described pivot arm and described bearing seat ball-joint, described pivot arm is supported by described bearing seat, described turning axle can rotate around X-axis in YOZ plane, and measured axis is fixed on the other end of described pivot arm by described lock sleeve; Described chucking device can along X-axis, Y-axis translation; Described first laser displacement sensor is connected with computer communication with described second laser displacement sensor.
Compared with prior art, the beneficial effects of the utility model are:
(1) versatility measured: the specificity, the measurement range that air-gauge is less that detect compared to go-no go gauge, the utility model beam warp measurement mechanism can tackle the measurement of axle of the different diameter of axle, different length, highly versatile, measurement range are large, do not need the different axle of reply and customize different surveying instruments.
(2) security of measuring: what the utility model adopted is non-contact measurement, is extracted the metrical information of the tested diameter of axle by the measurement ray of laser displacement sensor.Detect relative to vernier caliper, go-no go gauge, there is not the problem scratching workpiece, also can not produce stochastic error because the ergometry of different measuring personnel is different.
(3) accuracy measured: adopt the laser displacement sensor of high precision (micron order) as measuring element, compared to the measurement level (0.01 grade) of field of industrial measurement, this measurement mechanism can provide the diameter of axle of measured axis quickly and accurately.
(4) convenience operated: be installed to by measured axis on pivot arm, regulates measuring position, swings measured axis, makes the inswept measurement ray of measured axis, can complete the measurement of the diameter of axle, and show diameter of axle information over the display, convenient and swift.
Accompanying drawing explanation
Fig. 1 is the instrumentation plan of laser triangulation displacement transducer;
Fig. 2-1 is the principle schematic of calibration phase;
Fig. 2-2 is principle schematic of measuring phases;
Fig. 3 is the utility model measurement mechanism structural representation.
In figure: 1-first laser displacement sensor, 2-second laser displacement sensor, 3-first measurement bay, 4-second measurement bay, 5-X to one dimension guide rail, 6-lock-screw, 7-pivot arm, 8-locking device, 9-bearing seat, 10-XY two-dimension translational platform, the tested shaft member of 11-.
Embodiment
Be described in further detail technical solutions of the utility model below in conjunction with the drawings and specific embodiments, described specific embodiment only explains the utility model, not in order to limit the utility model.
Fig. 1 is the instrumentation plan of laser triangulation displacement transducer.As shown in the figure, a branch of measurement ray of sensor vertical outgoing, measures ray after tested object plane reflection, Returning sensor, just exportable by the range information of measured object to sensor exit facet.But this measurement ray exists one to be measured near point and one and measures far point, and the distance namely between sensor and measured object is only at anomaly l
minwith far point apart from l
maxbetween time, sensor just can export correct range information.Therefore, the range δ of sensor seriously governs the measurement capability of the diameter of axle.For this reason, the measurement that measurement range can adapt to the different diameter of axle is increased.This laser displacement sensor 1 just needing layout two laser emitting directions relative and sensor 2.Whole measuring process is made up of calibration phase and measuring phases.As shown in Fig. 2-1, calibration phase: be that the standard gauge block of L is placed between laser beam by length, two bundles of sensor 1 and sensor 2 are measured ray and are beaten respectively on two workplaces of gauge block, under the prerequisite not considering gauge block positional precision, can think that laser vertical is incident, the distance between two reflection spots is the length L of gauge block.Now, distance measure l1 and the l2 of sensor 1 and sensor 2 can be obtained.As shown in Fig. 2-2, measuring phases: keep sensor 1 and sensor 2 position motionless, make the vertical inswept laser beam of measured axis, the indicating value of sensor 1 and sensor 2 can from large to small, then be changed from small to big simultaneously, then can obtain two minimum value l'
1, l'
2.When obtaining minimum value, the distance between two laser reflection points is the diameter of axle, thus diameter of axle D has: D=L+ (l
1-l'
1)+(l
2-l'
2), wherein, L is the length of standard gauge block, l
1the distance between the laser that sends of sensor 1 to standard gauge block incidence point, l
2it is the distance between the laser that sends of sensor 2 to standard gauge block incidence point; L'
1the minimum value between the laser that sends of sensor 1 to measured axis incidence point, l'
2it is the minimum value between the laser that sends of sensor 2 to measured axis incidence point.
Based on above-mentioned laser displacement sensing measurement principle, a kind of diameter measurement device based on laser displacement sensor that the utility model proposes, its structure as shown in Figure 3, comprises pedestal, chucking device and computing machine, described pedestal is provided with X to one dimension guide rail 5 and XY two-dimension translational platform 10.Described pedestal is also fixed with the first measurement bay 3, described first measurement bay 3 is provided with the first laser displacement sensor 1; Described X is equipped with on one dimension guide rail 5 can the second measurement bay 4 along from X to movement, adapts to the measurement of the different diameter of axle with this; Described second measurement bay 4 is provided with the second laser displacement sensor 2; The coaxial conllinear of measurement ray of described first laser displacement sensor 1 and described second laser displacement sensor 2, described first laser displacement sensor 1 is connected with computer communication with described second laser displacement sensor 2.
Described chucking device comprises bearing seat 9, pivot arm 7 and lock sleeve 8, described bearing seat is arranged on described XY two-dimension translational platform 10, one end of described pivot arm 7 and described bearing seat 9 ball-joint, described pivot arm 7 is supported by described bearing seat 9, described turning axle can rotate around X-axis in YOZ plane, to ensure measured axis when scanning perpendicular to laser beam.In the utility model, pivot arm 7 and bearing seat 9 by high-precision machining and adjustment, to ensure the measurement laser beam that the axes normal of measured axis in measuring process is sent by described first laser displacement sensor 1 and described second laser displacement sensor 2 of coaxial conllinear.
During measurement, measured axis is locked at the other end of described pivot arm 7 by described lock sleeve 8, swing rotary arm 7, makes measured axis path position by laser beam, the measurement of the diameter of axle can be completed.Because clamping has the whole chucking device of measured axis (comprising turning axle 7, locking device 8 and bearing seat 9) to be fixed on two-dimension translational platform 10, therefore, can along X-axis, Y-axis translation, to adapt to the measurement of axle of the different diameter of axle, different length.
Use the utility model to carry out diameter measurement based on the diameter measurement device of laser displacement sensor to comprise the following steps:
Between the laser beam that the first laser displacement sensor 1 and the second laser displacement sensor 2 send, one translucent target plate is set, CCD camera is used to extract the center point coordinate of the picture point of two light beams on target plate, and then extract the skewed error of twin-beam, the coaxial conllinear of measurement ray of the first laser displacement sensor 1 and described second laser displacement sensor 2 can be ensured by adjusting the first measurement bay 3 and the second measurement bay 4.
Because the range of laser displacement sensor is limited, in order to adapt to the measurement of the different diameter of axle, before measurement, by regulating X to the position of one dimension guide rail 5 and XY two-dimension translational platform 10, measured axis is placed in correct position place, first laser displacement sensor 1 and the second laser displacement sensor 2 are all in range ability, now, utilize lock-screw 6 to lock X to one dimension guide rail 5; Then start to measure;
The process of diameter measurement comprises calibration phase and measuring phases.Wherein:
Calibration phase: select the standard gauge block mated with diameter of axle D, the length of described standard gauge block is L, │ D-L │ < δ, and δ is the range of sensor; Described standard gauge block is placed in measuring position, the laser beam that first laser displacement sensor 1 and the second laser displacement sensor 2 are sent is beaten on the workplace of standard gauge block, rock standard gauge block, the maximal value l of the measured value sum of computing machine meeting automatic Picking first laser displacement sensor 1 and the second laser displacement sensor 2 multiple degrees of freedom
1+ l
2, now, l
1the distance between the laser that sends of the first laser displacement sensor 1 to standard gauge block incidence point, l
2be the distance between the laser that sends of the second laser displacement sensor 2 to standard gauge block incidence point, the distance value on standard gauge block between two reflection spots is the length L of standard gauge block;
Measuring phases: the free end tested shaft member being fixed on pivot arm 7 by chucking device, the laser beam that swing rotary arm 7 makes the diameter of axle position of measured axis be sent by the first laser displacement sensor 1 and the second laser displacement sensor 2, completed the measurement of diameter of axle D by computer calculate, and show on computer screen; Diameter of axle D=L+ (l
1-l'
1)+(l
2-l'
2), wherein, l'
1the minimum value between the laser that sends of the first laser displacement sensor 1 to measured axis incidence point, l'
2it is the minimum value between the laser that sends of the second laser displacement sensor 2 to measured axis incidence point.
Although be described the utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; when not departing from the utility model aim, can also make a lot of distortion, these all belong within protection of the present utility model.
Claims (1)
1., based on a diameter measurement device for laser displacement sensor, comprise pedestal, chucking device and computing machine, it is characterized in that:
Described pedestal is provided with X to one dimension guide rail (5) and XY two-dimension translational platform (10);
Described pedestal is fixed with the first measurement bay (3), described first measurement bay (3) is provided with the first laser displacement sensor (1);
Described X is equipped with on one dimension guide rail (5) can the second measurement bay (4) along from X to movement, and described second measurement bay (4) is provided with the second laser displacement sensor (2);
The coaxial conllinear of measurement ray of described first laser displacement sensor (1) and described second laser displacement sensor (2);
Described chucking device comprises bearing seat (9), pivot arm (7) and lock sleeve (8), described bearing seat is arranged on described XY two-dimension translational platform (10), one end of described pivot arm (7) and described bearing seat (9) ball-joint, described pivot arm (7) is supported by described bearing seat (9), described turning axle can rotate around X-axis in YOZ plane, and measured axis is fixed on the other end of described pivot arm (7) by described lock sleeve (8); Described chucking device can along X-axis, Y-axis translation;
Described first laser displacement sensor (1) is connected with computer communication with described second laser displacement sensor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520820105.1U CN205049111U (en) | 2015-10-21 | 2015-10-21 | Diameter of axle measuring device based on laser displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520820105.1U CN205049111U (en) | 2015-10-21 | 2015-10-21 | Diameter of axle measuring device based on laser displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205049111U true CN205049111U (en) | 2016-02-24 |
Family
ID=55342683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520820105.1U Expired - Fee Related CN205049111U (en) | 2015-10-21 | 2015-10-21 | Diameter of axle measuring device based on laser displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205049111U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180819A (en) * | 2015-10-21 | 2015-12-23 | 天津大学 | Laser displacement sensor-based shaft diameter measurement device and measurement method thereof |
| CN110631492A (en) * | 2019-09-05 | 2019-12-31 | 江苏理工学院 | Device and method for detecting maximum diameter of arc-shaped groove of bearing outer ring |
| CN111060010A (en) * | 2019-12-16 | 2020-04-24 | 天津大学 | Parallel plane parameter on-machine measurement system and measurement method |
-
2015
- 2015-10-21 CN CN201520820105.1U patent/CN205049111U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180819A (en) * | 2015-10-21 | 2015-12-23 | 天津大学 | Laser displacement sensor-based shaft diameter measurement device and measurement method thereof |
| CN105180819B (en) * | 2015-10-21 | 2018-01-12 | 天津大学 | Diameter measurement device and its measuring method based on laser displacement sensor |
| CN110631492A (en) * | 2019-09-05 | 2019-12-31 | 江苏理工学院 | Device and method for detecting maximum diameter of arc-shaped groove of bearing outer ring |
| CN110631492B (en) * | 2019-09-05 | 2021-05-18 | 江苏理工学院 | Device and method for detecting maximum diameter of arc-shaped groove of bearing outer ring |
| CN111060010A (en) * | 2019-12-16 | 2020-04-24 | 天津大学 | Parallel plane parameter on-machine measurement system and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20171021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |