CN102901456A - Detection device and method for detecting outer diameter, runout value and roundness of circular shaft - Google Patents

Detection device and method for detecting outer diameter, runout value and roundness of circular shaft Download PDF

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Publication number
CN102901456A
CN102901456A CN2012103355088A CN201210335508A CN102901456A CN 102901456 A CN102901456 A CN 102901456A CN 2012103355088 A CN2012103355088 A CN 2012103355088A CN 201210335508 A CN201210335508 A CN 201210335508A CN 102901456 A CN102901456 A CN 102901456A
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CN
China
Prior art keywords
guide rail
circular shaft
tip
detected
cylinder
Prior art date
Application number
CN2012103355088A
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Chinese (zh)
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CN102901456B (en
Inventor
郑青焕
Original Assignee
深圳深蓝精机有限公司
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Application filed by 深圳深蓝精机有限公司 filed Critical 深圳深蓝精机有限公司
Priority to CN201210335508.8A priority Critical patent/CN102901456B/en
Publication of CN102901456A publication Critical patent/CN102901456A/en
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Publication of CN102901456B publication Critical patent/CN102901456B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/08Measuring arrangements characterised by the use of optical means for measuring diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/24Measuring arrangements characterised by the use of optical means for measuring contours or curvatures

Abstract

The invention relates to a detection device and a method for detecting an outer diameter, a runout value and roundness of a circular shaft. The detection device comprises a base portion, an optical measurement portion, a center portion and a personal computer (PC)-programmable logic controller (PLC) control center, wherein the base portion comprises a base board and two base board guide rails, the optical measurement portion and the center portion are installed on the base portion in a sliding mode, the optical measurement portion comprises an optical measurement instrument guide rail and an optical measurement instrument, the optical measurement instrument guide rail is arranged on the base board guide rails in a sliding mode, the optical measurement instrument is arranged on the optical measurement instrument guide rail in a sliding mode, the center portion comprises a center guide rail, a first center structure and a second center structure, the first center structure and the second center structure are arranged on the center guide rail in a sliding mode, and the PC-PLC control center controls the optical measurement portion and the center portion to move relative to the base portion. The optical measurement instrument is used for measuring a round shaft to be detected, measured data are fed back to the PC-PLC control center, and the PC-PLC control center calculates the outer diameter, the runout value and the roundness of the circular shaft to be detected according to the measured data.

Description

The method of the external diameter of pick-up unit and detection circular shaft, jitter values, out of roundness
Technical field
The present invention relates to a kind of optical detection apparatus, relate in particular to pick-up unit and the detection method of a kind of external diameter that can be used for detecting axle, jitter values, out of roundness etc.
Background technology
At present, along with the high speed development of industry, for avoid the circular shaft type parts because of external diameter, jitter values, the out of roundness fluctuation is excessive causes wearing and tearing or fault at applied equipment, therefore, the detection of circular shaft parts is necessitated.Measuring industry, prior art is utilized directional light more, scans parallel beam or is expanded parallel light velocity irradiation measured object, its projection size is carried out light velocity scanning block measurement of time, or directional light blocks the measurement of position.Yet such metering system mostly is semi-automatic mode: the testing staff need hand optical gauge circular shaft is measured, and records measurement data one by one, and detection efficiency is very low.
Summary of the invention
Technical matters to be solved by this invention is, a kind of pick-up unit that can quick and precisely automatically detect axle external diameter, jitter values, out of roundness is provided.
The present invention is achieved in that provides a kind of pick-up unit, and it comprises base portion, optical measurement section, top tip part and PC-PLC control center; Described optical measurement section and described top tip part are slidably mounted on the described base portion; Described PC-PLC control center controls the motion of described optical measurement section, the relatively described base portion of described top tip part; Described base portion comprises substrate and two substrate guide rails being located on the described substrate; Described two substrate guide rails are respectively along its horizontal expansion, and in the vertical alternate setting; Described optical measurement section comprises the optical measuring instrument guide rail and is located at optical measuring instrument on the described optical measuring instrument guide rail; Described optical measuring instrument is used for circular shaft to be detected is measured, and measurement data is fed back to described PC-PLC control center, and described PC-PLC control center calculates the detection data of described circular shaft to be detected according to described measurement data; Described optical measuring instrument guide rail laterally is slidingly arranged on the described substrate guide rail; Described optical measuring instrument is slidingly arranged on the described optical measuring instrument guide rail; Described top tip part comprises top guide rail, the first top tip structure and the second top tip structure; Described top guide rail is arranged on the described substrate along horizontal its horizontal expansion, and arranges with described two substrate guide rail intervals in the vertical; Described the first top tip structure is along laterally it laterally is slidably disposed on an end of described top guide rail; Described the second top tip structure laterally is slidably disposed on the other end of described top guide rail along it.。
Further, described top tip part also comprises the V-type supporting seat; Described V-type supporting seat laterally is slidingly arranged on the described top guide rail along it, and is used for supporting described circular shaft to be detected between described the first top tip structure and described the second top tip structure.
Further, described the first top tip structure and described the second top tip structure comprise respectively housing, cylinder guide rail, cylinder, Telescopic-cylinder bar, top and motor; Described housing comprises base plate, pedestal and fixed block; Described base plate is provided with the chute that matches with described top guide rail; Described pedestal is installed on the described base plate and along with described base plate slides with respect to described top guide rail; Described pedestal is provided with opening; Described fixed block is arranged on the described base plate; Described cylinder guide rail is arranged on the described base plate and along its horizontal expansion; Described pedestal is slidingly mounted on the described cylinder guide rail; Described cylinder is installed on the described pedestal; One end of described Telescopic-cylinder bar is arranged in described cylinder, the other end of described Telescopic-cylinder bar extends to the outside and scalable described opening that passes on the described pedestal of described cylinder, and by described fixed block so that described cylinder drives described pedestal laterally reciprocatingly slides with respect to described cylinder guide rail along it on described cylinder guide rail; Described top being arranged on the described pedestal, and along with described pedestal together moves; Described motor is arranged on a side of described housing, drives described top rotation.
Further, the described fixed block of described the first top tip structure is positioned at a described top side of described the first top tip structure of closing on of described housing; The described fixed block of described the second top tip structure is positioned at the described top side away from described the second top tip structure of described housing.
Further, describedly toply comprise the inner fovea part that is formed on its front end and be located at replaceably limited block in the described inner fovea part; Described limited block cooperates with described circular shaft to be detected.
Further, described limited block is truncated cone-shaped, in order to detect solid circular shaft; The limited block of described truncated cone-shaped is provided with inner groovy, and the chamfering of the circular shaft that the outer ring of described inner groovy and described survey are solid matches.
Further, it is conical that described limited block is, in order to detect hollow circular shaft; Described conical limited block matches with the inner ring of described hollow circular shaft.
Described pick-up unit further comprises feed mechanism, blanking mechanism for sorting and manipulator mechanism; Described feed mechanism grasps described circular shaft to be detected, and the circular shaft that will detect is placed in the described blanking mechanism for sorting; Described PLC-PC control center controls described manipulator mechanism to the crawl of circular shaft, and control described blanking mechanism for sorting according to measure, classification results carries out blanking and sorting.
Further, described manipulator mechanism is arranged on the described substrate, has vertically to be built in two columns on the described substrate and to be set up in crossbeam on the two described columns, and manipulator part is located on this crossbeam, along the guide rail slippage that arranges on the described crossbeam.
The present invention also provides the method for a kind of external diameter that adopts pick-up unit described above to detect circular shaft, jitter values, out of roundness, its described optical measuring instrument obtains data according to its shade that is covered rear generation by described circular shaft to be detected that emits beam, to make tangent line with light vertical section circular shaft marginal point, obtain shade spacing d, record spacing L1 or L2 with circular shaft edge and each point of contact of light and light Distances Between Neighboring Edge Points; After described circular shaft to be detected rotated at least one week, described optical measuring instrument obtained data (d1, d2, dn), (L11 ..., L1n) or (L21, L2n), described PC-PLC control center is with described data recording and calculate: by to (d1, d2,, dn) the external diameter value of the described circular shaft to be detected of mean value calculation; By calculate (L11 ..., L1n) or (L21 ..., L2n) middle maximal value and minimum value is poor, draws an axle jitter values of described circular shaft to be detected, by calculating some axle jitter values, draws the average jitter values of described circular shaft to be detected; By calculate (d1, d2 ..., dn) middle maximal value and minimum value is poor, draws an out of roundness value of described circular shaft to be detected, by calculating some out of roundness values, draws the Average True circularity of described circular shaft to be detected.
Compared with prior art, pick-up unit of the present invention is by control optical measurement section of PC-PLC control center, the motion of the relative base portion of top tip part, and by the relative motion between adjusting optical measuring instrument guide rail and the substrate guide rail and the relative motion between optical measuring instrument and the optical measuring instrument guide rail, optical measuring instrument quick and precisely can be dripped and be transferred to suitable measuring position, simultaneously, the first top tip structure and the second top tip structure are slidably disposed at first direction can be quick on the top guide rail, step up easily or unclamp circular shaft to be detected, therefore, pick-up unit of the present invention can quick and precisely detect the axle external diameter automatically, jitter values, the pick-up unit of out of roundness.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram of pick-up unit in one embodiment of the invention.
Fig. 2 is the front view of pick-up unit among Fig. 1.
Fig. 3 is the vertical view of pick-up unit among Fig. 1.
Fig. 4 is the enlarged diagram of top tip part among Fig. 1.
Fig. 5 is the schematic diagram of another angle of top tip part among Fig. 4.
Fig. 6 is the schematic diagram of top tip part in another embodiment of the present invention.
Fig. 7 is the schematic diagram that top tip part cooperates with the truncated cone-shaped limited block in one embodiment of the invention.
Fig. 8 is that top tip part cooperates schematic diagram with conical limited block in one embodiment of the invention.
Fig. 9 is the schematic diagram of pick-up unit in another embodiment of the present invention.
Figure 10 is the schematic diagram of another angle of pick-up unit among Fig. 9.
Figure 11 the present invention measures circular shaft external diameter, jitter values and out of roundness principle schematic.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Figure 1 shows that the schematic diagram of pick-up unit 100 in one embodiment of the invention.As shown in fig. 1, pick-up unit 100 comprises base portion 110, optical measurement section 120, top tip part 130 and PC-PLC control center (not shown).Wherein, optical measurement section 120 all is arranged on the base portion 110 with top tip part 130 and can moves by relative base portion 110.
Particularly, base portion 110 can be used for installing optical measurement section 120 and top tip part 130.Base portion 110 comprises substrate 112 and the first guide rail or the substrate guide rail 113 be located on the substrate 112.
Substrate 112 has and laterally (is illustrated as first direction D1) and vertically (being illustrated as second direction D2).In the embodiment shown in fig. 1, substrate 112 is rectangular, and first direction D1 is the length direction of substrate 112, and second direction D2 is the Width of substrate 112.Article two, substrate guide rail 113 is parallel to each other and being located on the substrate 112 of interval.In the embodiment shown in fig. 1, two substrate guide rails 113 extend along first direction D1 respectively, and alternate setting on second direction D2.
Optical measurement section 120 comprises the second guide rail or optical measuring instrument guide rail 122 and the optical measuring instrument 123 of being located on the optical measuring instrument guide rail 122.
Two optical measuring instrument guide rails 122 are parallel to each other and are spaced apart and arranged on the substrate guide rail 113, and relatively substrate guide rail 113 motions.In the embodiment shown in fig. 1, two optical measuring instrument guide rails 122 extend along second direction D2 respectively, and the interval arranges on first direction D1; In other words, optical measuring instrument guide rail 122 is perpendicular to substrate guide rail 113.The two ends of each optical measuring instrument guide rail 122 are installed on the substrate guide rail 113, and each optical measuring instrument guide rail 122 can move with respect to substrate guide rail 113 along first direction D1.
Optical measuring instrument 123 is slidably mounted on the optical measuring instrument guide rail 122.The quantity of optical measuring instrument 123 can be adjusted according to actual user demand, for example, can be one or more.When the quantity of optical measuring instrument 123 was 1, the quantity of optical measuring instrument guide rail 122 can correspondingly change one into.In the embodiment shown in fig. 1, the number of bits of optical measuring instrument guide rail 122 is a plurality of and be separately positioned on the optical measuring instrument guide rail 122.Optical measuring instrument 123 can slide with respect to optical measuring instrument guide rail 122 along second direction D2.
Because optical measuring instrument guide rail 122 also can slide with respect to substrate guide rail 113 along first direction D1 perpendicular to substrate guide rail 113, and optical measuring instrument 123 can slide with respect to optical measuring instrument guide rail 122 along second direction D2, therefore, by the relative motion between adjusting optical measuring instrument guide rail 122 and the substrate guide rail 113 and the relative motion between optical measuring instrument 123 and the optical measuring instrument guide rail 122, optical measuring instrument 123 can be transferred to suitable measuring position.
The top tip structure at two ends that top tip part 130 comprises the 3rd guide rail or top guide rail 132, be located at top guide rail 132 is such as the first top tip structure 133 and the second top tip structure 135, and V-type supporting seat 136.
Wherein, top guide rail 132 is arranged on the substrate 112 along first direction D1 extension, and arranges with two substrate guide rail 113 intervals on second direction.In other words, top guide rail 132 and two substrate guide rails 113 be arranged in parallel, arrange between two substrate guide rails 113 and with two substrate guide rail 113 intervals.
The structure of the first top tip structure 133 and the second top tip structure 135 can be identical (as all adopting structure shown in Fig. 4-5, or all adopting structure shown in Figure 6) or similar (for example one adopt structure shown in Fig. 4-5 and another adopts structure shown in Figure 6).The structure of the below the first top tip structure 133 and second top tip structure 135 take the first top tip structure 133 as the example brief description.
When the first top tip structure 133 adopted structure shown in Fig. 4-5, the first top tip structure 133 comprised that housing 1332, cylinder guide rail 1334, cylinder 1335(are as shown in Figure 7), Telescopic-cylinder bar 1336(as shown in Figure 7), top 1338 and motor 1339 such as stepper motor.
Wherein, housing 1332 is slidably mounted in top guide rail 132.In the embodiment shown in Fig. 4-5, housing 1332 comprises base plate 13321, pedestal 13323 and fixed block 13324.
Base plate 13321 is provided with the chute 13325 that can match with top guide rail 132.Chute 13325 extends along first direction D1.By cooperating between chute 13325 and the top guide rail 132, base plate 13321 can slide with respect to top guide rail 132 along first direction D1.
Pedestal 13323 is installed on the base plate 13321 and can slides with respect to top guide rail 132 along first direction D1 along with base plate 13321.Pedestal 13323 is mainly used in accommodating cylinder 1335 and cylinder expansion link 1336.Pedestal 13323 is provided with through hole 13327, wears for cylinder expansion link 1336.
Fixed block 13324 is arranged on pedestal 13323 outsides, and generally perpendicularly is arranged on the base plate 13321.There is a casting lug thereon 13328 fixed block 13324 tops, and casting lug thereon 13328 is corresponding with the through hole 13327 on the pedestal 13323.
Cylinder guide rail 1334 is arranged between base plate 13321 and the pedestal 13323.In the embodiment shown in Fig. 4-5, cylinder guide rail 1334 extends along first direction D1, and is installed on the base plate 13321.Pedestal 13323 is slidably mounted on the cylinder guide rail 1334, so that pedestal 13323 both can reciprocatingly slide with respect to top guide rail 132 along first direction D1 in company with base plate 13321, can reciprocatingly slide with respect to base plate 13321 along first direction D1 again.
As shown in Figure 7, cylinder 1335 is installed in the pedestal 13323.In one embodiment, cylinder 1335 can be installed on the pedestal 13323 by bolt etc.One end of Telescopic-cylinder bar 1336 is arranged in cylinder 1335; The other end of Telescopic-cylinder bar 1336 extends to the outside and scalable through hole 13327 that passes on the pedestal 13323 of cylinder 1335, and interact with casting lug thereon 13328 on the fixed block 13324, so that can driving pedestal 13323, cylinder 1335 reciprocatingly slides with respect to cylinder guide rail 1334 along first direction D1 at cylinder guide rail 1334.
Top 1338 are arranged on the pedestal 13323, and can together move along with pedestal 13323.As mentioned above, pedestal 13323 not only can reciprocatingly slide with respect to top guide rail 132 but also can reciprocatingly slide with respect to cylinder guide rail 1334 or base plate 13321 along first direction D1 along first direction D1 in company with base plate 13321, therefore, top 1338 also is both can reciprocatingly slide with respect to top guide rail 132 along first direction D1 in company with base plate 13321, can reciprocatingly slide with respect to cylinder guide rail 1334 or base plate 13321 along first direction D1 again.Like this, can realize the coarse adjustment of top 1338 positions with respect to the slip of top guide rail 132 by control base plate 13321; Can realize the accurate adjustment of top 1338 positions with respect to the slip of cylinder guide rail 1334 by control pedestal 13323.Position and then accurate adjustment top 1338 by first coarse adjustment top 1338 arrange, can adjust to suitable position with top 1338 quickly and accurately, both can improve measurement precision, save time, can also avoid because the distortion of the distortion of the excessive axle to be measured that may cause of top 1338 movement velocitys or top 1338 or damage etc.
Motor 1339 is arranged on a side of housing 1332.In one embodiment, motor 1339 can be installed on the pedestal 13323.Motor 1339 can link to each other with top 1338 by belt, rotates in order to drive top 1338.
When the first top tip structure 133 adopts structure shown in Figure 6, the structural similarity shown in the structure of the first top tip structure 133 and Fig. 4-5, the main difference part is that fixed block 13324 is with respect to the position of pedestal 13323.
In the structure shown in Fig. 4-5, fixed block 13324 is positioned at the first side of pedestal 13323, the other end of Telescopic-cylinder bar 1336 extends to the first side of pedestal 13323, and interact with casting lug thereon 13328 on the fixed block 13324: Telescopic-cylinder bar 1336 stretches in cylinder 1335 so that Telescopic-cylinder bar 1336 and casting lug thereon 13328 are supported mutually, thus make cylinder 1335 and on pedestal 13323, top 1338 along first direction D1 towards substrate 130 interior lateral movements namely in order to step up axle to be measured; Telescopic-cylinder bar 1336 shrinks in cylinder 1335 so that Telescopic-cylinder bar 1336 is strained mutually with casting lug thereon 13328, thus make cylinder 1335 and on pedestal 13323, top 1338 along first direction D1 towards substrate 130 movement outside namely in order to unclamp axle to be measured.
In structure shown in Figure 6, situation is just opposite, and fixed block 13324 is positioned at the second side of pedestal 13323, and the first side is the opposite both sides of pedestal 13323 with the second side.The other end of Telescopic-cylinder bar 1336 extends to the second side of pedestal 13323, and interact with casting lug thereon 13328 on the fixed block 13324: Telescopic-cylinder bar 1336 stretches in cylinder 1335 so that Telescopic-cylinder bar 1336 and casting lug thereon 13328 are supported mutually, thus make cylinder 1335 and on pedestal 13323, top 1338 along first direction D1 towards substrate 130 movement outside namely in order to unclamp axle to be measured; Telescopic-cylinder bar 1336 shrinks in cylinder 1335 so that Telescopic-cylinder bar 1336 is strained mutually with casting lug thereon 13328, thus make cylinder 1335 and on pedestal 13323, top 1338 along first direction D1 towards substrate 130 interior lateral movements namely in order to step up axle to be measured.
Axle to be measured can be stepped up or unclamps by the position of regulating the first top tip structure 133 and the second top tip structure 135.V-type supporting seat 136 can be arranged on the top guide rail 132, and is used for supporting circular shaft to be detected between the first top tip structure 133 and the second top tip structure 135.In the embodiment shown in fig. 1, V-type supporting seat 136 is slidably disposed on the top guide rail 132, thereby can slide into suitable position to support axle to be measured at first direction D1 along top guide rail 132.
In addition, conventional detection devices is top can not change the defective that causes equipment can only detect a class circular shaft in order to avoid, in one embodiment, as shown in Figure 7 and Figure 8, top 1338 can adopt concave shaped top, and namely top 1338 comprise the inner fovea part 13382 that is formed on its front end and are located at replaceably limited block 13383 in the inner fovea part 13382.As shown in Figure 7, limited block 13383 can be truncated cone-shaped, in order to detect solid circular shaft 200a.The limited block 13383 of truncated cone-shaped is provided with inner groovy 13387, can match with the chamfering 220a of circular shaft 200a to be measured in the outer ring 13389 of inner groovy 13387, obtains corresponding data take the chamfering 220a of circular shaft 200a to be measured as the location is rotated.As shown in Figure 8, it is conical that limited block 13383 can be, and in order to detect hollow circular shaft 200b: conical limited block 13383 can match with the inner ring of hollow circular shaft 200b, to drive circular shaft 200b rotation.Above-mentioned truncated cone-shaped or conical limited block 13383 cooperate for Morse's taper with inner fovea part 13382, so that limited block 13383 and top 1338 clampings and replacing, thereby can change according to circular shaft to be detected kind and the size of limited block 1338, make like this pick-up unit 100 can adapt to multiple circular shaft and detect.
In addition, pick-up unit 100 also comprises PC-PLC control center (not shown), and it can be divided into computing module and analysis module, and can be according to calculating the motion of controlling above-mentioned parts with analytic process.
In one embodiment of this invention, shown in Fig. 9-10, pick-up unit 100 also can further comprise feed mechanism 140, blanking mechanism for sorting 150 and manipulator mechanism 160.Feed mechanism 140 and blanking mechanism for sorting 150 lay respectively at the both sides of base portion 110; Manipulator mechanism 160 is arranged on the substrate 112, have and vertically be built in two columns 161 on the described substrate 112 and be set up in crossbeam 162 on two columns 161, manipulator part is located on this crossbeam 162, can be along the guide rail slippage that arranges on the crossbeam 162, be used for from feed mechanism 140 crawls circular shaft to be detected, the circular shaft to be detected of crawl can be placed on the V-type supporting seat 136, and the circular shaft that has detected can be placed in the blanking mechanism for sorting 150.In the embodiment shown in Fig. 9-10, PLC-PC control center can control the crawl of 160 pairs of circular shafts of manipulator mechanism, and can control blanking mechanism for sorting 150 and carry out blanking and sorting according to measurement, classification results, thereby can realize the full-automation of circular shaft from material loading to sorting, reduce manually-operated labour intensity, be applicable to the large situation of circular shaft quantity to be detected, it reduces manual detection intensity, has improved detection efficiency.
In addition, pick-up unit 100 also can further comprise display screen, and in order to showing testing result and classification situation, but the convenient operation personnel classify to circular shaft according to the result.
Above-mentioned is the concrete structure of pick-up unit 100 in one embodiment of the invention, and according to above-mentioned detection device, the present invention also provides the method for the external diameter that detects circular shaft, jitter values, out of roundness.
Before detecting beginning, length according to circular shaft to be detected can be adjusted the first top tip structure 133, the second top tip structure 135, the position of V-type supporting seat 136 on top guide rail 132 by above-mentioned coarse adjustment mode, adjusts the position of optical measuring instrument 123 on optical measuring instrument guide rail 122 and substrate guide rail 113 to determine the detection position of circular shaft 200 to be measured by the mode of above mentioning simultaneously.In advance typing or by detecting the master bar data of corresponding circular shaft in PC-PLC control center database of operating personnel, in PC, set again external diameter, beat, out of roundness deviate sub-material scope, with machinery after determining to detect or the scope that manually belongs to according to deviate circular shaft is carried out sorting.
As Figure 1-3, when circular shaft 200 to be detected was placed on the V-type supporting seat 136, circular shaft 200 to be detected was between the first top tip structure 133 and the second top tip structure 135; At this moment, the Telescopic-cylinder bar 1336 of the cylinder 1335 in the first top tip structure 133 and the second top tip structure 135 stretches or tightens, interact with the casting lug thereon 13328 on the fixed block 13324, promote top 1338 of pedestal 13323 and top and in the middle of top guide rail 132 past base portions 110, draw close, make top 1338 proper two ends apical graftings with circular shaft 200 to be detected be about to circular shaft 200 to be detected and clamp.When top 1338 with circular shaft 200 apical graftings to be detected after, stepper motor 1339 in top 1,338 one sides drives top 1338 rotations by belt, 123 pairs of circular shaft 200 related datas to be detected of optical measuring instrument are measured, and with data feedback to PC-PLC control center.
In measuring process, as shown in figure 11, after circular shaft 200 to be detected began to rotate, optical measuring instrument 123 began to measure circular shaft 200 corresponding datas to be detected.Optical measuring instrument 123 obtains data according to its shade that is covered rear generation by circular shaft 200 to be detected that emits beam, and to make tangent line with light vertical section circular shaft marginal point, obtains shade spacing d.Record spacing L1 or L2 with circular shaft edge and each point of contact of light and light Distances Between Neighboring Edge Points.Because 200 at least one weeks of rotation of circular shaft to be detected, thus can obtain data (d1, d2 ..., dn), (L11 ..., L1n) or (L21 ..., L2n), PC-PLC control center is with data recording and be delivered to computing module.By to (d1, d2 ..., dn) the external diameter value of mean value calculation circular shaft 200 to be detected.By calculate (L11 ..., L1n) or (L21 ..., L2n) middle maximal value and minimum value is poor, draws an axle jitter values of circular shaft 200 to be detected, by calculating some axle jitter values, draws the average jitter values of circular shaft 200 to be detected.By calculate (d1, d2 ..., dn) middle maximal value and minimum value is poor, draws an out of roundness value of circular shaft 200 to be detected, by calculating some out of roundness values, draws the Average True circularity of circular shaft 200 to be detected.Above-mentioned mean outside diameter value, axle jitter values and out of roundness value can guarantee to detect the objectivity of data.In addition, the data output form can be set and comprise that excel or max, min, ave, cpk process capability form make the testing staff very clear to the data of circular shaft 200 to be detected in PC-PLC control center.
After circular shaft 200 detections to be detected are complete, stepper motor 139 stops operating, Telescopic-cylinder bar 1336 stretches or tightens, interact with the casting lug thereon 13328 on the fixed block 13324, promote pedestal 13323 and top top 1338 along top guide rail 132 toward base portion 110 movement outside, make top 1338 just to separate with the two ends of circular shaft 200 to be detected and be about to circular shaft 200 to be detected and unclamp, then circular shaft 200 to be detected is taken away.Because the default numerical classification scope that detects before detecting beginning, PC-PLC control center can compare data and detection numerical range, classification, and the result is delivered to display screen or corresponding blanking mechanism for sorting 150, control blanking mechanism for sorting 150 is finished the circular shaft sub-material.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a pick-up unit is characterized in that, it comprises base portion, optical measurement section, top tip part and PC-PLC control center; Described optical measurement section and described top tip part are slidably mounted on the described base portion; Described PC-PLC control center controls the motion of described optical measurement section, the relatively described base portion of described top tip part; Described base portion comprises substrate and two substrate guide rails being located on the described substrate; Described two substrate guide rails are respectively along its horizontal expansion, and in the vertical alternate setting; Described optical measurement section comprises the optical measuring instrument guide rail and is located at optical measuring instrument on the described optical measuring instrument guide rail; Described optical measuring instrument is used for circular shaft to be detected is measured, and measurement data is fed back to described PC-PLC control center, and described PC-PLC control center calculates the detection data of described circular shaft to be detected according to described measurement data; Described optical measuring instrument guide rail laterally is slidingly arranged on the described substrate guide rail; Described optical measuring instrument is slidingly arranged on the described optical measuring instrument guide rail; Described top tip part comprises top guide rail, the first top tip structure and the second top tip structure; Described top guide rail is arranged on the described substrate along horizontal its horizontal expansion, and arranges with described two substrate guide rail intervals in the vertical; Described the first top tip structure is along laterally it laterally is slidably disposed on an end of described top guide rail; Described the second top tip structure laterally is slidably disposed on the other end of described top guide rail along it.
2. pick-up unit as claimed in claim 1 is characterized in that, described top tip part also comprises the V-type supporting seat; Described V-type supporting seat laterally is slidingly arranged on the described top guide rail along it, and is used for supporting described circular shaft to be detected between described the first top tip structure and described the second top tip structure.
3. pick-up unit as claimed in claim 1 is characterized in that, described the first top tip structure and described the second top tip structure comprise respectively housing, cylinder guide rail, cylinder, Telescopic-cylinder bar, top and motor; Described housing comprises base plate, pedestal and fixed block; Described base plate is provided with the chute that matches with described top guide rail; Described pedestal is installed on the described base plate and along with described base plate slides with respect to described top guide rail; Described pedestal is provided with opening; Described fixed block is arranged on the described base plate; Described cylinder guide rail is arranged on the described base plate and along its horizontal expansion; Described pedestal is slidingly mounted on the described cylinder guide rail; Described cylinder is installed on the described pedestal; One end of described Telescopic-cylinder bar is arranged in described cylinder, the other end of described Telescopic-cylinder bar extends to the outside and scalable described opening that passes on the described pedestal of described cylinder, and by described fixed block so that described cylinder drives described pedestal laterally reciprocatingly slides with respect to described cylinder guide rail along it on described cylinder guide rail; Described top being arranged on the described pedestal, and along with described pedestal together moves; Described motor is arranged on a side of described housing, drives described top rotation.
4. pick-up unit as claimed in claim 1 is characterized in that, the described fixed block of described the first top tip structure is positioned at a described top side of described the first top tip structure of closing on of described housing; The described fixed block of described the second top tip structure is positioned at the described top side away from described the second top tip structure of described housing.
5. such as any one described pick-up unit in the claim 1 to 4, it is characterized in that, describedly toply comprise the inner fovea part that is formed on its front end and be located at replaceably limited block in the described inner fovea part; Described limited block cooperates with described circular shaft to be detected.
6. pick-up unit as claimed in claim 5 is characterized in that, described limited block is truncated cone-shaped, in order to detect solid circular shaft; The limited block of described truncated cone-shaped is provided with inner groovy, and the chamfering of the circular shaft that the outer ring of described inner groovy and described survey are solid matches.
7. pick-up unit as claimed in claim 5 is characterized in that, it is conical that described limited block is, in order to detect hollow circular shaft; Described conical limited block matches with the inner ring of described hollow circular shaft.
8. such as any one described pick-up unit in the claim 1 to 4, it is characterized in that, described pick-up unit further comprises feed mechanism, blanking mechanism for sorting and manipulator mechanism; Described feed mechanism grasps described circular shaft to be detected, and the circular shaft that will detect is placed in the described blanking mechanism for sorting; Described PLC-PC control center controls described manipulator mechanism to the crawl of circular shaft, and control described blanking mechanism for sorting according to measure, classification results carries out blanking and sorting.
9. pick-up unit as claimed in claim 8, it is characterized in that, described manipulator mechanism is arranged on the described substrate, have and vertically be built in two columns on the described substrate and be set up in crossbeam on the two described columns, manipulator part is located on this crossbeam, along the guide rail slippage that arranges on the described crossbeam.
10. method that adopts external diameter that any one described pick-up unit of claim 1 to 9 detects circular shaft, jitter values, out of roundness, it is characterized in that, described optical measuring instrument obtains data according to its shade that is covered rear generation by described circular shaft to be detected that emits beam, to make tangent line with light vertical section circular shaft marginal point, obtain shade spacing d, record spacing L1 or L2 with circular shaft edge and each point of contact of light and light Distances Between Neighboring Edge Points; After described circular shaft to be detected rotated at least one week, described optical measuring instrument obtained data (d1, d2, dn), (L11 ..., L1n) or (L21, L2n), described PC-PLC control center is with described data recording and calculate: by to (d1, d2,, dn) the external diameter value of the described circular shaft to be detected of mean value calculation; By calculate (L11 ..., L1n) or (L21 ..., L2n) middle maximal value and minimum value is poor, draws an axle jitter values of described circular shaft to be detected, by calculating some axle jitter values, draws the average jitter values of described circular shaft to be detected; By calculate (d1, d2 ..., dn) middle maximal value and minimum value is poor, draws an out of roundness value of described circular shaft to be detected, by calculating some out of roundness values, draws the Average True circularity of described circular shaft to be detected.
CN201210335508.8A 2012-09-12 2012-09-12 Pick-up unit and detect the method for the external diameter of circular shaft, jitter values, out of roundness CN102901456B (en)

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PCT/CN2013/082536 WO2014040499A1 (en) 2012-09-12 2013-08-29 Detection device and method for detecting circular shaft outer diameter, runout value and roundness

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