CN202382712U - Lower lighting image measuring instrument for outside diameter of axial workpiece - Google Patents
Lower lighting image measuring instrument for outside diameter of axial workpiece Download PDFInfo
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- CN202382712U CN202382712U CN2011205314219U CN201120531421U CN202382712U CN 202382712 U CN202382712 U CN 202382712U CN 2011205314219 U CN2011205314219 U CN 2011205314219U CN 201120531421 U CN201120531421 U CN 201120531421U CN 202382712 U CN202382712 U CN 202382712U
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- light source
- shaft
- microscope
- platform
- light emitting
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Abstract
The utility model relates to a lower lighting image measuring instrument for an outside diameter of an axial workpiece, comprising a base, a platform, a light source, a microscope and a camera; the microscope is fixed on the base by a mounting bracket; the light source is arranged on the base below a lens of the microscope; the light source is a plurality of light emitting diodes which are connected with each other in series; the light emitting diodes are arranged like a ring and have lighting directions facing towards an annular axial line; the axial line of each light emitting diode tilts to the base; the platform is located above the light source; a transparent slice is embedded in the middle of the platform; position of the transparent slice is corresponding to the position of the light source; an axial workpiece mounting seat is arranged on the transparent slice; the camera is located above the microscope and is connected with the microscope; the camera is connected with a computer via a data line; a voltage input end of the light source is connected with the computer via a PWM digital adjustable circuit. According to the utility model, illumination brightness is uniform and adjustable, speed is high, dynamic range is large, amount of information is abundant, measurement efficiency and measurement precision are increased greatly.
Description
Technical field
The utility model relates to a kind of shaft-like workpiece outside diameter measuring device, relates in particular to the following illumination image measurer of the shaft-like workpiece external diameter that a kind of non-cpntact measurement and measuring accuracy are high, measuring speed is fast.
Background technology
The shaft-like workpiece external diameter is measured, utilized some traditional survey instruments such as milscale, vernier caliper or gauge etc. to measure, have all inevitably that precision is low, labour intensity is big, these shortcomings of poor reliability.High precision instruments such as three coordinate machine then must reduce detection rates, are unfavorable for the high-level efficiency measurement.Dial gauge method, instrument measuring method are the methods of relatively compromising, and be simple relatively than the three coordinate machine operation, can guarantee precision again simultaneously, and cost is also lower.
Electron microscope technique is developed in 21 century fast.Development along with electron microscope and radiographic measurement technology is used for Eikonometric micro-worktable and also arises at the historic moment.And existing microscope great majority all are to adopt the mode that goes up illumination, in radiographic measurement, if adopt the mode that goes up illumination, just exist reflective and the unconspicuous situation of edge sharpening, influence measuring accuracy.In addition, objective table then can exist and look for the problem that the visual field is inconvenient, workpiece is located inconvenience if there is not precision positioning device, has increased the difficulty of measuring.
Summary of the invention
The utility model mainly solves the measuring operation inconvenience of original shaft-like workpiece external diameter, can't satisfy the technical matters of measurement demand in enormous quantities; Solve original microscope radiographic measurement simultaneously and generally all adopt upward lighting system, exist reflective and the unconspicuous situation of edge sharpening, influence the technical matters of measuring accuracy; A kind of following illumination image measurer of shaft-like workpiece external diameter is provided, and it has avoided reflective and the unconspicuous situation of edge sharpening, and lighting source realizes that the PWM numeral is adjustable under it; To reduce the people is the inconvenience and the error of light modulation; Improve measuring accuracy, simple to operate, efficiency of measurement is high; Intelligent degree is high, satisfies the demand of measuring in enormous quantities.
Another purpose of the utility model provides a kind of following illumination image measurer of shaft-like workpiece external diameter, and its light source adopts the led light source of unique arrangement, thereby above light source, obtains even plane of illumination, improves measuring accuracy.
The another purpose of the utility model provides a kind of following illumination image measurer of shaft-like workpiece external diameter, and the precision positioning device that it possesses shaft-like workpiece makes that the shaft-like workpiece location is convenient, also is convenient to find the visual field, makes the measurement of shaft-like workpiece external diameter convenient.
The above-mentioned technical matters of the utility model mainly is able to solve through following technical proposals: the utility model comprises base, platform, light source, microscope and camera; Microscope is fixed on the base through mounting bracket, and light source is located on the base of microscope camera lens below, and light source is many light emitting diodes that are in series; Described light emitting diode circular array and its illumination direction are towards the axis of annular; The axis tilt of every light emitting diode is in described base, and platform is positioned at the light source top, and the centre of platform is embedded with a slide; The position of slide is corresponding with the position of light source; Slide is provided with a shaft-like workpiece mounting yoke, and described camera is positioned at described microscope top and links to each other the microscopical observation panel of the alignment lens of camera with microscope; Described camera links to each other with computing machine through data line again, and the voltage input end of described light source links to each other with described computing machine through a PWM numeral conditioned circuit.Shaft-like workpiece outside diameter measuring software is installed on the computing machine, and camera adopts the CCD digital camera.Microscopical enlargement ratio is 0.7～4.5 times, and is adjustable continuously, makes things convenient for the measurement under the demands of different.Also can load onto the continuous zoom ring on the microscope, be beneficial to enlarge measurement range.Successively place axle class standard spare and tested shaft-like workpiece on the shaft-like workpiece mounting yoke; The external diameter image of axle class standard spare and tested shaft-like workpiece images on the CCD image sensing surface after amplifying through microscope; It is the minority carrier density signal storage in the quick unit of picture as the image illumination signal transition on the quick unit that image sensing surface will impinge upon each, under the effect of shifting pulse, transfers in the shift register of CCD then again; And under the effect of driving pulse, sequentially shift out device; Become vision signal, vision signal is handled or is calculated by the rear portion treatment circuit again, becomes TV signal or detection signal; Deposit calculator memory in through digital interface then, remake a series of processing and computing by computing machine.The utility model is employed in the structure of throwing light in the workpiece below, has avoided reflective and the unconspicuous situation of edge sharpening, effectively improves measuring accuracy.Light emitting diode can directly be converted into luminous energy with electric energy expeditiously, is solid cold light source of new generation, and has than the long life, possesses advantages such as power saving, high shatter-proof, light source tool directivity and light evil are few simultaneously.Many light emitting diodes help making the workpiece that is positioned at the light source top to obtain uniform illumination all towards the irradiation of oblique upper direction.Shaft-like workpiece outside diameter measuring software through installing on the computing machine is controlled the input end signal of PWM numeral conditioned circuit; By the output terminal of PWM numeral conditioned circuit the WV of light source is controlled again; Realize adjusting easily to light-source brightness; To reduce the people is the inconvenience and the error of light modulation, is convenient on computer display, obtain distinct image.During measurement, gather and preserve the edge still image of a width of cloth axle class standard spare earlier, gather and preserve the edge still image of a tested shaft-like workpiece again, obtain the external diameter of tested shaft-like workpiece by computing machine through processing and computing.The utility model is realized non-contact measurement; Can guarantee the subtle change of surface of the work is come out through image appearance, and it is convenient to obtain image, has advantages such as high-speed, that dynamic range is big, quantity of information is abundant; Efficiency of measurement and measuring accuracy improve greatly, are highly suitable for measure batch.
As preferably, described light emitting diode has 12, and it is 2 centimetres ring shooting that 12 light emitting diodes are radius, and the angle between the axis of every light emitting diode and the described base is 45 degree.Through optics CAD quadrature l-G simulation test to five levels of four factors such as distance of the angle of inclination of light emitting diode quantity, the loop curve radius of being arranged, light emitting diode and light-emitting area and irradiation target face; The distribution and the mounting structure that draw above-mentioned light emitting diode are preferred plan; Make on light source, can obtain even plane of illumination, improve measuring accuracy.
As preferably, described shaft-like workpiece mounting yoke is the block of strip, and the end face of block is provided with the V-type groove that extends along the length direction of block.The V-type groove is used for placing axle class standard spare and tested shaft-like workpiece, plays good positioning action, guarantees can not roll and be shifted at measuring process axis class standard spare and tested shaft-like workpiece, improves measuring accuracy.
As preferably; Described platform is provided with a handwheel; The handwheel below is arranged with a gear wheel, and there is a pinion wheel gear wheel below, and the top that pinion shaft passes handwheel center and pinion shaft from the bottom up is exposed to outside the handwheel; The described platform back side is provided with X with gear wheel engagement to tooth bar, and described base is provided with Y with pinion to tooth bar.Gear wheel and pinion wheel constitute the double-layer gear structure, and rotation hand wheel drives the gear wheel rotation, make platform make X to moving; Rotation is positioned at the pinion shaft of handwheel top, drives the pinion wheel rotation, makes platform make Y to moving.Can be easily the axle class standard spare and the edge video of tested shaft-like workpiece that are positioned on the shaft-like workpiece mounting yoke be moved into the center, visual field that shows on the computer display, thereby realize the accurate location in the measuring process apace.Gear drive possesses characteristics such as contour dimension is little, compact conformation, efficient is high, ratio of gear is constant, the life-span is long.
As preferably, described slide is a frosted glass plate.Printing opacity and radiation response are better.
The beneficial effect of the utility model is: through light source is set, realize illumination radiographic measurement down below platform, avoided reflective and the unconspicuous situation of edge sharpening.Light source adopts the led light source of unique arrangement, and led light source realization PWM numeral is adjustable, is the inconvenience and the error of light modulation to reduce the people, thereby above light source, obtains even plane of illumination.Through double-layer gear structure and directions X tooth bar, Y direction tooth bar engaged transmission, can adjust the left and right position of platform easily, make that the shaft-like workpiece location is convenient, be convenient to tested edge and get into the center, visual field of measuring.The utility model is realized the non-contact measurement of shaft-like workpiece external diameter, has advantages such as high-speed, that dynamic range is big, quantity of information is abundant, and efficiency of measurement and measuring accuracy improve greatly, are highly suitable for measure batch.
Description of drawings
Fig. 1 is a kind of perspective view of the utility model.
Fig. 2 is a kind of perspective view of the mounting structure of platform and light source in the utility model.
Fig. 3 is a kind of broken section structural representation of the mounting structure of platform and handwheel in the utility model.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment: the following illumination image measurer of the shaft-like workpiece external diameter of present embodiment, as shown in Figure 1, comprise base 1, platform 2, light source 3, microscope 4, camera 5 and computing machine 16.Microscope 4 is fixed on the base 1 through mounting bracket, and light source 3 is installed on the base 1 of microscope 4 camera lenses below.Platform 2 is positioned at light source 3 tops; The centre of platform 2 has a square hole; A frosted glass plate is housed as slide 6 in the square hole, the position of frosted glass plate is corresponding with the position of light source 3, lays a shaft-like workpiece mounting yoke 7 on the frosted glass plate; Shaft-like workpiece mounting yoke 7 is the block of strip, and the end face of block has a V-type groove 9 that extends along the length direction of block.Camera 5 is positioned at microscope 4 tops and links to each other with microscope 4, and the microscopical observation panel of the alignment lens of camera, camera 5 link to each other with computing machine 16 through data line again, and shaft-like workpiece outside diameter measuring software is installed on the computing machine 16.
As shown in Figure 2; Light source 3 is 12 light emitting diodes that are in series 8; It is led light source; 12 light emitting diodes 8 be radius be 2 centimetres ring shooting and its illumination direction be oblique upper to axis towards annular, the angle between the axis of every light emitting diode 8 and the base 1 is 45 degree, promptly the shadow surface of light emitting diode favours base 45 degree.The voltage input end of the series circuit of 12 light emitting diodes links to each other with the output terminal of PWM numeral conditioned circuit, and the input end of PWM numeral conditioned circuit links to each other with computing machine 16 through cable.
As shown in Figure 3, two dimension is installed on the base 1 moves seat, platform 2 is installed in two dimension and moves on the seat, and light source 3 is enclosed in two dimension and moves in the seat.In the present embodiment, two dimension move seat comprise X to rolling guide, Y to rolling guide and X to tooth bar 14, Y to tooth bar 15, handwheel 10 and gear wheel 11, pinion wheel 12.Y is contained on the base 1 to rolling guide, and X is contained in Y above guide rail to guide rail, and platform 2 is installed in X on guide rail.Handwheel 10 is positioned at a side of platform 2; Handwheel 10 belows are with a gear wheel 11; There is a pinion wheel 12 that is connected on the pinion shaft 13 gear wheel 11 belows, and the top that pinion shaft 13 passes handwheel 10 centers and pinion shaft 13 from the bottom up is exposed to outside the handwheel 10.The X that is contained in platform 2 back sides to tooth bar 14 with the X of gear wheel 11 engagement on the guide rail and the Y of pinion wheel 12 engagements be contained in the Y that is fixed on the base 1 on guide rail to tooth bar 15.
Measuring process:
A. open light source, open microscope and camera, opening installation shaft-like workpiece outside diameter measuring software on computers; Through enterprising line operate at shaft-like workpiece outside diameter measuring Software Operation interface; Regulate the input end signal of PWM numeral conditioned circuit, regulate the supply voltage of light source by the output end signal of PWM numeral conditioned circuit again, and then regulate the brightness of light source; The optical signalling that microscope obtains converts vision signal to through camera, is presented at last on the computer screen;
B. an axle class standard spare is placed on the V-type groove of shaft-like workpiece mounting yoke; Control hand wheel and pinion shaft; Make platform do to make Y to translation to tooth bar to tooth bar, make the video at the edge of a class standard spare get into the center, visual field on the computer screen to translation with along Y along X;
C. regulate microscopical object lens enlargement ratio, object distance and image distance; Until on computer screen, seeing the edge of axle class standard spare clearly, through enterprising line operate makes computer acquisition and preserves the standard static image at the edge of axle class standard spare at this moment at shaft-like workpiece outside diameter measuring Software Operation interface;
D. remove a class standard spare; On the V-type groove of shaft-like workpiece mounting yoke, place tested shaft-like workpiece, through enterprising line operate makes computer acquisition and preserves the tested still image at the edge of tested shaft-like workpiece at this moment at shaft-like workpiece outside diameter measuring Software Operation interface;
E. through shaft-like workpiece outside diameter measuring software standard static image and tested still image are handled and computing, calculated the external diameter of tested shaft-like workpiece at last, and be presented on the computer screen.
The utility model is realized the non-contact measurement of shaft-like workpiece external diameter, and intelligent degree is high, has advantages such as high-speed, that dynamic range is big, quantity of information is abundant, and efficiency of measurement and measuring accuracy improve greatly, are highly suitable for measure batch.
Claims (5)
1. the following illumination image measurer of a shaft-like workpiece external diameter; It is characterized in that comprising base (1), platform (2), light source (3), microscope (4) and camera (5); Microscope (4) is fixed on the base (1) through mounting bracket; Light source (3) is located on the base (1) of microscope (4) camera lens below, and light source (3) is many light emitting diodes that are in series (8), and described light emitting diode (8) circular array and its illumination direction are towards the axis of annular; The axis tilt of every light emitting diode (8) is in described base (1); Platform (2) is positioned at light source (3) top, and the centre of platform (2) is embedded with a slide (6), and the position of slide (6) is corresponding with the position of light source (3); Slide (6) is provided with a shaft-like workpiece mounting yoke (7); Described camera (5) is positioned at described microscope (4) top and links to each other with microscope (4), and described camera (5) links to each other with computing machine (16) through data line again, and the voltage input end of described light source (3) links to each other with described computing machine (16) through a PWM numeral conditioned circuit.
2. the following illumination image measurer of shaft-like workpiece external diameter according to claim 1; It is characterized in that described light emitting diode (8) has 12; It is 2 centimetres ring shooting that 12 light emitting diodes (8) are radius, and the angle between the axis of every light emitting diode (8) and the described base (1) is 45 degree.
3. the following illumination image measurer of shaft-like workpiece external diameter according to claim 1 is characterized in that described shaft-like workpiece mounting yoke (7) is the block of strip, and the end face of block is provided with the V-type groove (9) that extends along the length direction of block.
4. according to the following illumination image measurer of claim 1 or 2 or 3 described shaft-like workpiece external diameters; It is characterized in that described platform (2) is provided with a handwheel (10); Handwheel (10) below is arranged with a gear wheel (11); There is a pinion wheel (12) that is connected on the pinion shaft (13) gear wheel (11) below; The top that pinion shaft (13) passes handwheel (10) center and pinion shaft (13) from the bottom up is exposed to outside the handwheel (10), and the X that described platform (2) back side is provided with and gear wheel (11) meshes is to tooth bar (14), and the Y that described base (1) is provided with and pinion wheel (12) meshes is to tooth bar (15).
5. according to the following illumination image measurer of claim 1 or 2 or 3 described shaft-like workpiece external diameters, it is characterized in that described slide (6) is a frosted glass plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205314219U CN202382712U (en) | 2011-12-16 | 2011-12-16 | Lower lighting image measuring instrument for outside diameter of axial workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205314219U CN202382712U (en) | 2011-12-16 | 2011-12-16 | Lower lighting image measuring instrument for outside diameter of axial workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN202382712U true CN202382712U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205314219U Expired - Fee Related CN202382712U (en) | 2011-12-16 | 2011-12-16 | Lower lighting image measuring instrument for outside diameter of axial workpiece |
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| CN (1) | CN202382712U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589453A (en) * | 2011-12-16 | 2012-07-18 | 中国计量学院 | External diameter images measuring device for axial work pieces and measuring method thereof |
| CN103063681A (en) * | 2012-12-21 | 2013-04-24 | 符云舒 | Tungsten filament rope coiling machine charge coupled device (CCD) image capture display method and detecting device thereof |
| CN103471844A (en) * | 2013-06-15 | 2013-12-25 | 芜湖佳先传动轴有限公司 | Constant-velocity universal joint drive shaft assembly measuring workbench |
| CN103542813A (en) * | 2013-07-05 | 2014-01-29 | 中国计量学院 | Laser diameter measuring instrument based on boundary differential and environmental light self-calibration |
-
2011
- 2011-12-16 CN CN2011205314219U patent/CN202382712U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589453A (en) * | 2011-12-16 | 2012-07-18 | 中国计量学院 | External diameter images measuring device for axial work pieces and measuring method thereof |
| CN103063681A (en) * | 2012-12-21 | 2013-04-24 | 符云舒 | Tungsten filament rope coiling machine charge coupled device (CCD) image capture display method and detecting device thereof |
| CN103471844A (en) * | 2013-06-15 | 2013-12-25 | 芜湖佳先传动轴有限公司 | Constant-velocity universal joint drive shaft assembly measuring workbench |
| CN103542813A (en) * | 2013-07-05 | 2014-01-29 | 中国计量学院 | Laser diameter measuring instrument based on boundary differential and environmental light self-calibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20121216 |