CN102200762A - Numerical control system for contour detection of cam - Google Patents

Numerical control system for contour detection of cam Download PDF

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CN102200762A
CN102200762A CN 201110096390 CN201110096390A CN102200762A CN 102200762 A CN102200762 A CN 102200762A CN 201110096390 CN201110096390 CN 201110096390 CN 201110096390 A CN201110096390 A CN 201110096390A CN 102200762 A CN102200762 A CN 102200762A
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cam
laser ranging
spacing
ranging head
displacement sensor
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CN102200762B (en
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丁仕燕
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Abstract

The invention provides a numerical control system for contour detection of a cam. The system which is simple in structure, higher in detection accuracy and higher in efficiency comprises a numerical control rotary table, a guide rail synchronous belt component, a laser ranging head, an optical grating ruler displacement sensor, an encoder and an industrial personal computer, wherein the numerical control rotary table is used for driving the cam to horizontally and coaxially rotate around a vertical mandrel; the guide rail synchronous belt component is horizontally arranged on one side of the numerical control rotary table; the laser ranging head is arranged on a synchronous belt in the guide rail synchronous belt component and arranged on one side of the cam; the optical grating ruler displacement sensor is used for measuring the horizontal displacement of the laser ranging head and detecting a rotary angle of the cam; and the industrial personal computer controls the numerical control rotary table and the guide rail synchronous belt component to move and calculates the outer contour data of the cam according to data which is measured by the laser ranging head, the optical grating ruler displacement sensor and the encoder.

Description

Cam contour detects uses digital control system
Technical field
The present invention relates to a kind of cam contour detection digital control system.
Background technology
Cam mechanism is widely used in various automated machines, exact instrument, automation control system etc.Accomplish high precision, detect cam expeditiously, and correctly handle, evaluate its every error, in time feed back the quality information of cam apace, the method that traditional optical-mechanical amount instrument and artificial data are handled can not adapt to the needs of the extensive transfer matic production of adopting of cam.Along with the high speed development of auto industry, engineering machinery etc. and improving constantly of manufacturing technology,, be the technical barrier that this area will solve to accuracy of detection and the efficient that how to improve the cam machining precision.
Summary of the invention
Technical matters to be solved by this invention provides a kind of simple in structure, accuracy of detection and the higher cam contour of efficient and detects and use digital control system.
For solving the problems of the technologies described above, the invention provides a kind of cam contour and detect and use digital control system, comprising: be used for driving cam around guide rail that numerical control rotating platform, the level of the vertical coaxial rotation of axle level are located at numerical control rotating platform one side synchronously with assembly, be located at this guide rail synchronously with assembly synchronously with on and in the laser ranging head of cam one side, be used to measure the horizontal displacement of described laser ranging head the grating rule displacement sensor, be used to detect the scrambler and the industrial computer of the anglec of rotation of cam; Described industrial computer controls described numerical control rotating platform and guide rail is with the assembly action synchronously, and goes out the outline data of cam according to the data computation that described laser ranging head, grating rule displacement sensor and scrambler record.
Particularly, described laser ranging head is located at guide rail synchronously with on the guide rail in the assembly by a slide block, and slide block and described synchronous band are fixedly linked; The two ends of described guide rail are provided with belt wheel, and described synchronous band is located at this on the belt wheel, and one of them belt wheel links to each other with a stepper motor transmission, and described numerical control rotating platform links to each other with a turntable motor transmission; Industrial computer comprises: the motion control card that is used for controlling in real time described numerical control rotating platform and stepper motor action, the laser displacement sensor capture card that is used for real-time detection laser range finding head and the spacing of the outline of cam that links to each other with described laser ranging head, the encoder to count card that links to each other with scrambler with described grating rule displacement sensor, and the CPU element that links to each other with described motion control card, laser displacement sensor capture card and encoder to count card by system bus; Described motion control card passes through the action of a turntable motor driver control turntable motor, and then controls described numerical control rotating platform action; Motion control card is simultaneously by a stepper motor driver control step motor action.
The anglec of rotation at described cam is θ iThe time, the spacing of the outline of the cam that records and laser ranging head i.e. first pitch measurements is
Figure 2011100963903100002DEST_PATH_IMAGE002
Simultaneously, the grating rule displacement sensor measure described slide block in the horizontal direction with the hard zero-bit of grating rule displacement sensor
Figure 2011100963903100002DEST_PATH_IMAGE004
Spacing promptly second pitch measurements be , i=1,2,3 ... n; I detects described first, second pitch measurements in the process that rotates a circle of cam simultaneously
Figure 706179DEST_PATH_IMAGE002
,
Figure 827719DEST_PATH_IMAGE006
Number of times, 0 °≤θ i＜360 °.
The detection method that described cam contour detects with digital control system comprises:
A), with i.e. first spacing of the spacing of the cylindrical of laser ranging head and axle
Figure 2011100963903100002DEST_PATH_IMAGE008
Be controlled in the range of laser ranging head, detect and write down described first spacing then
Figure 135203DEST_PATH_IMAGE008
, detect simultaneously and write down described slide block in the horizontal direction with described hard zero-bit
Figure 291378DEST_PATH_IMAGE004
I.e. second spacing of spacing
Figure 2011100963903100002DEST_PATH_IMAGE010
(, therefore only need to detect described first spacing owing to the processing and the installation accuracy of described axle ensures easily
Figure 26116DEST_PATH_IMAGE008
）
B), cam is not had the gap be matched with on the described axle, if the outline data of known cam
Figure 2011100963903100002DEST_PATH_IMAGE012
, then when beginning to control cam and rotating a circle, the outline of the relative cam of control laser ranging head according to +
Figure 979083DEST_PATH_IMAGE008
Orbiting motion; Simultaneously, control described first pitch measurements
Figure 458606DEST_PATH_IMAGE002
All the time be in the range of laser ranging head, and obtain anglec of rotation θ with cam iCorresponding described first, second pitch measurements
Figure 895404DEST_PATH_IMAGE002
,
Figure 991535DEST_PATH_IMAGE006
C), by axle diameter d and described ,
Figure 771590DEST_PATH_IMAGE010
,
Figure 910447DEST_PATH_IMAGE002
,
Figure 697137DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam
Figure 2011100963903100002DEST_PATH_IMAGE014
:
Figure 2011100963903100002DEST_PATH_IMAGE016
；
D), with described utmost point footpath measured value With described outline data
Figure 114484DEST_PATH_IMAGE012
Compare, draw the outline mismachining tolerance of cam.
The another kind of detection method that described cam contour detects with digital control system comprises:
A), with i.e. first spacing of the spacing of the cylindrical of laser ranging head and axle
Figure 893085DEST_PATH_IMAGE008
Be controlled in the range of laser ranging head, detect and write down described first spacing then
Figure 698230DEST_PATH_IMAGE008
, detect simultaneously and write down described slide block in the horizontal direction with described hard zero-bit
Figure 220478DEST_PATH_IMAGE004
I.e. second spacing of spacing
Figure 529099DEST_PATH_IMAGE010
B), cam do not had the gap be matched with on the described axle, if the outline data of unknown cam, then when beginning to control cam and rotating a circle, control described slide block and be according to described first pitch measurements that the laser ranging head records
Figure 478601DEST_PATH_IMAGE002
Size do near or away from the straight-line displacement of cam, to control described first pitch measurements
Figure 36621DEST_PATH_IMAGE002
All the time be in the range of laser ranging head, and obtain anglec of rotation θ with cam iCorresponding described first, second pitch measurements
Figure 96981DEST_PATH_IMAGE002
,
Figure 525688DEST_PATH_IMAGE006
C), by axle diameter d and described
Figure 646091DEST_PATH_IMAGE008
,
Figure 425828DEST_PATH_IMAGE010
,
Figure 788414DEST_PATH_IMAGE002
,
Figure 71628DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam :
Figure 629965DEST_PATH_IMAGE016
。
The present invention has positive effect: (1) cam contour of the present invention detects and adopts non-contact measurement method with digital control system, the motion of laser ranging head is with assembly driving carrying out horizontal linear displacement synchronously by guide rail, the laser ranging head does not have the machinery wearing and tearing in the measuring process, compare with the existing contact measuring method, have characteristics such as speed is fast, precision is high, precision stability is good.The laser ranging head of selected range scope little (range starting point～range terminal point), under the constant condition of its linearity, measuring error is less.The detection of a laser ranging horizontal displacement is finished by the grating rule displacement sensor, directly changes under the bigger situation at the utmost point of cam, still can obtain higher measuring accuracy, so the cost performance of native system is higher; (2) in order to guarantee that the laser ranging head can measure all the time in range ability, the distance that promptly guarantees laser ranging head and cam contour is between range starting point and range terminal point, to guarantee measuring accuracy, the present invention adopts the numerical control interpolating method, cam is rotatablely moved and a laser ranging horizontal direction rectilinear motion links.The anglec of rotation of cam is detected by the scrambler that links to each other with axle, and axle was determined by the zero pulse of scrambler at the zero point of circumferencial direction.
?
Description of drawings
Fig. 1 is that cam contour of the present invention detects the structural representation with digital control system;
Fig. 2 for the cam contour among Fig. 1 detect with digital control system cam is not installed the time structural drawing.
?
Embodiment
(embodiment 1)
See Fig. 1-2, the cam contour of present embodiment detects and comprises with digital control system: be used to drive guide rail that cam 10 is located at numerical control rotating platform 1 one sides around numerical control rotating platform 1, the level of the vertical coaxial rotation of axle 1-1 level synchronously with assembly 3, be located at that this guide rail is gone up with the synchronous band 3-1 of assembly 3 synchronously and in the laser ranging of cam 10 1 sides 2, be used to measure the horizontal displacement of described laser ranging 2 grating rule displacement sensor 4, be used to detect the scrambler 5 and the industrial computer of the anglec of rotation of cam 10; Described industrial computer is controlled described numerical control rotating platform 1 and guide rail and is with assembly 3 actions synchronously, and draws the outline data of cam 10 according to the data that described laser ranging 2, grating rule displacement sensor 4 and scrambler 5 record.
As the embodiment of optimum, the laser of the center line of described guide rail 3-2 and laser ranging 2 outputs respectively with the intersect vertical axis of described axle 1-1.
Described industrial computer comprises: the motion control card that is used for controlling in real time described numerical control rotating platform 1 and stepper motor 7 actions, the laser displacement sensor capture card that is used for real-time detection laser range finding 2 and the spacing of the outline of cam 10 that links to each other with described laser ranging 2, the encoder to count card that links to each other with scrambler 5 with described grating rule displacement sensor 4, by system bus and described motion control card, the CPU element that the laser displacement sensor capture card links to each other with the encoder to count card, and the LCD that is used to show and contrast the outline data of cam 10 that links to each other with described system bus through video card.
Described numerical control rotating platform 1 links to each other with a turntable motor 6 transmissions, and motion control card passes through the action of a turntable motor driver control turntable motor 6, and then controls the action of described numerical control rotating platform 1; Motion control card is simultaneously by 7 actions of stepper motor driver control step motor.
The anglec of rotation at described cam 10 is θ iThe time, the spacing of the outline of the cam 10 that records and laser ranging 2 i.e. first pitch measurements is
Figure 297707DEST_PATH_IMAGE002
Simultaneously, grating rule displacement sensor 4 measure described slide block 8 in the horizontal direction with the hard zero-bit of grating rule displacement sensor 4
Figure 966586DEST_PATH_IMAGE004
Spacing promptly second pitch measurements be
Figure 428791DEST_PATH_IMAGE006
, i=1,2,3 ... n; I detects described first, second pitch measurements in the process that rotates a circle of cam 10 simultaneously
Figure 651962DEST_PATH_IMAGE002
,
Figure 123395DEST_PATH_IMAGE006
Number of times, n can determine according to the cam gap size that takes measurement of an angle, for example: 180,360,720 etc., n is big more, the outline data of the cam 10 that records are accurate more; 0 °≤θ i＜360 °, θ I+1-θ i=θ i-θ I-1
For improving accuracy of detection to the higher position of cam requirement on machining accuracy (as the outline data of the lug boss of cam), guarantee detection efficiency simultaneously as far as possible, can be arranged on when detecting this position, reduce θ I+1And θ iDifference.
If the outline data of known cam 10
Figure 115622DEST_PATH_IMAGE012
, the detection method that then described cam contour detects with digital control system comprises:
A, with i.e. first spacing of the spacing of laser ranging 2 and the cylindrical of axle 1-1
Figure 247263DEST_PATH_IMAGE008
Be controlled at that (best embodiment is: first spacing in the range of laser ranging 2
Figure 488889DEST_PATH_IMAGE008
Be controlled near the range mid point of laser ranging 2, because near the measuring accuracy the range mid point is the highest), detect and write down described first spacing then
Figure 498433DEST_PATH_IMAGE008
, detect simultaneously and write down described slide block 8 in the horizontal direction with described hard zero-bit
Figure 345166DEST_PATH_IMAGE004
I.e. second spacing of spacing
Figure 414754DEST_PATH_IMAGE010
B, cam 10 no gaps are matched with on the described axle 1-1, when beginning to control cam 10 and rotating a circle, the outline of control laser ranging 2 a relative cam 10 according to
Figure 346937DEST_PATH_IMAGE012
+
Figure 160173DEST_PATH_IMAGE008
Orbiting motion; Simultaneously, control described first pitch measurements All the time be in that (best embodiment is: first spacing in the range of laser ranging 2
Figure 633059DEST_PATH_IMAGE008
Be controlled near the range mid point of laser ranging 2, because near the measuring accuracy the range mid point is the highest; ), and obtain anglec of rotation θ with cam 10 iCorresponding described first, second pitch measurements
Figure 52539DEST_PATH_IMAGE002
,
C, by axle diameter d and described
Figure 723747DEST_PATH_IMAGE008
,
Figure 666295DEST_PATH_IMAGE010
, ,
Figure 196951DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam 10
Figure 403941DEST_PATH_IMAGE014
:
Figure 986232DEST_PATH_IMAGE016
；
D, with described utmost point footpath measured value With described outline data
Figure 73454DEST_PATH_IMAGE012
Compare, draw the outline mismachining tolerance of cam 10.
If the outline data of unknown cam 10
Figure 367907DEST_PATH_IMAGE012
, the detection method that then described cam contour detects with digital control system comprises:
A, with i.e. first spacing of the spacing of laser ranging 2 and the cylindrical of axle 1-1
Figure 386678DEST_PATH_IMAGE008
Be controlled in the range of laser ranging 2, detect and write down described first spacing then
Figure 268047DEST_PATH_IMAGE008
, detect simultaneously and write down described slide block 8 in the horizontal direction with described hard zero-bit
Figure 764887DEST_PATH_IMAGE004
I.e. second spacing of spacing
Figure 415311DEST_PATH_IMAGE010
B, cam 10 no gaps are matched with on the described axle 1-1, when beginning to control cam 10 and rotating a circle, control described slide block 8 and be according to laser ranging 2 described first pitch measurements that record
Figure 339405DEST_PATH_IMAGE002
Size do near or away from the straight-line displacement of cam 10, to control described first pitch measurements
Figure 442490DEST_PATH_IMAGE002
All the time be in the range of laser ranging 2, and obtain anglec of rotation θ with cam 10 iCorresponding described first, second pitch measurements
Figure 477442DEST_PATH_IMAGE002
,
Figure 247952DEST_PATH_IMAGE006
C, by axle diameter d and described
Figure 874106DEST_PATH_IMAGE008
,
Figure 963022DEST_PATH_IMAGE010
,
Figure 801665DEST_PATH_IMAGE002
,
Figure 426681DEST_PATH_IMAGE006
, calculate the outline data of cam 10, also be utmost point footpath measured value :
Figure 770255DEST_PATH_IMAGE016
。
Above-mentioned laser ranging 2 can be selected the high-precision laser displacement transducer of the PRIMUS 1000-2 type of Germany based on PC, and its main performance index is: range 2mm, range starting point 16mm, range terminal point 20mm, range mid point 18mm; The linearity 1 μ m, resolution 0.2 μ m; Spot diameter 35 μ m.
Described encoder to count card is used to write down the pulse number that grating rule displacement sensor 4, scrambler 5 produce, and then calculates guide rail synchronously with nut displacement, the cam anglec of rotation of assembly.Motion control card control cam and guide rail move by given trace with the nut of assembly synchronously.
A hard zero-bit is installed on the right side of grating chi 4-2 in the grating rule displacement sensor 4, as the starting point of grating rule displacement sensor 4 measuring distances tolerance.A grating reading 4-1 is located on the described slide block 8.
(embodiment 2)
On the basis of embodiment 1, present embodiment has following distortion:
For eliminating processing or the alignment error of axle 1-1, to the influence of cam contour accuracy of detection, the detection method of described cam contour pick-up unit comprises:
A, detect the outer rim data of axle 1-1: when axle 1-1 begins to rotate a circle, with i.e. first spacing of the spacing of laser measuring head 2 and the cylindrical of axle 1-1 All the time be controlled in the range of laser measuring head 2, detect simultaneously and record and the described anglec of rotation are θ iCorresponding first spacing
Figure 147010DEST_PATH_IMAGE018
, and described mover 3-1 in the horizontal direction with described hard zero-bit
Figure 626533DEST_PATH_IMAGE004
I.e. second spacing of spacing
Figure 2011100963903100002DEST_PATH_IMAGE020
B, cam 10 no gaps are matched with on the described axle 1-1, if the outline data of known cam 10
Figure 30707DEST_PATH_IMAGE012
, then when beginning to control cam 10 and rotating a circle, the outline of control laser measuring head 2 relative cams 10 according to
Figure 595681DEST_PATH_IMAGE012
+
Figure 776126DEST_PATH_IMAGE018
Orbiting motion; Simultaneously, control described first pitch measurements
Figure 110156DEST_PATH_IMAGE002
All the time be in the range of laser measuring head 2, and obtain anglec of rotation θ with cam 10 iCorresponding described first, second pitch measurements
Figure 249013DEST_PATH_IMAGE002
,
Figure 301282DEST_PATH_IMAGE006
C, by axle diameter d and described
Figure 285419DEST_PATH_IMAGE018
,
Figure 473955DEST_PATH_IMAGE020
,
Figure 252555DEST_PATH_IMAGE002
,
Figure 290656DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam 10
Figure 2011100963903100002DEST_PATH_IMAGE022
Figure 2011100963903100002DEST_PATH_IMAGE024
D, with described utmost point footpath measured value With described outline data
Figure 219429DEST_PATH_IMAGE012
Compare, draw the outline mismachining tolerance of cam 10.
If the outline data of unknown cam 10
Figure 528050DEST_PATH_IMAGE012
, the detection method of then described cam contour pick-up unit comprises:
A, detect the outer rim data of axle 1-1: when axle 1-1 begins to rotate a circle, with i.e. first spacing of the spacing of laser measuring head 2 and the cylindrical of axle 1-1
Figure 8710DEST_PATH_IMAGE018
All the time be controlled in the range of laser measuring head 2, detect simultaneously and record and the described anglec of rotation are θ iCorresponding first spacing , and described mover 3-1 in the horizontal direction with described hard zero-bit I.e. second spacing of spacing
Figure 769314DEST_PATH_IMAGE020
B, cam 10 no gaps are matched with on the described axle 1-1, if the outline data of unknown cam 10, then when beginning to control cam 10 and rotating a circle, the mover 3-1 of control linear electric motors 3 according to described first pitch measurements that laser measuring head 2 records is
Figure 155296DEST_PATH_IMAGE002
Size do near or away from the straight-line displacement of cam 10, to control described first pitch measurements
Figure 403875DEST_PATH_IMAGE002
All the time be in the range of laser measuring head 2, and obtain anglec of rotation θ with cam 10 iCorresponding described first, second pitch measurements
Figure 267926DEST_PATH_IMAGE002
,
Figure 551139DEST_PATH_IMAGE006
C, by axle diameter d and described
Figure 842443DEST_PATH_IMAGE018
,
Figure 578318DEST_PATH_IMAGE020
,
Figure 246060DEST_PATH_IMAGE002
,
Figure 882315DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam 10
Figure 344521DEST_PATH_IMAGE022
Figure 98850DEST_PATH_IMAGE024
。
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.

Claims (4)

1. a cam contour detects and uses digital control system, it is characterized in that comprising: be used to drive the numerical control rotating platform (1) of cam (10) around the coaxial rotation of vertical axle (1-1) level, level is located at the guide rail of numerical control rotating platform (1) one side and is with assembly (3) synchronously, be located at this guide rail synchronously with on the synchronous band (3-1) in the assembly (3) and in the laser ranging head (2) of cam (10) one sides, be used to measure the grating rule displacement sensor (4) of the horizontal displacement of described laser ranging head (2), be used to detect the scrambler (5) of the anglec of rotation of cam (10), and industrial computer;
Described industrial computer controls described numerical control rotating platform (1) and guide rail is with assembly (3) action synchronously, and goes out the outline data of cam (10) according to the data computation that described laser ranging head (2), grating rule displacement sensor (4) and scrambler (5) record.
2. cam contour according to claim 1 detects uses digital control system, it is characterized in that: described laser ranging head (2) is located at guide rail synchronously with on the guide rail (3-2) in the assembly (3) by a slide block (8), and slide block (8) is fixedly linked with described synchronous band (3-1); Described guide rail (3-2) two ends are provided with belt wheel (3-3), described synchronous band (3-1) is located at this on the belt wheel (3-3), and one of them belt wheel (3-3) links to each other with a stepper motor (7) transmission, and described numerical control rotating platform (1) links to each other with a turntable motor (6) transmission;
Described industrial computer comprises: the motion control card that is used for controlling in real time described numerical control rotating platform (1) and stepper motor (7) action, the laser displacement sensor capture card of the spacing of the outline that is used for real-time detection laser range finding head (2) and cam (10) that links to each other with described laser ranging head (2), the encoder to count card that links to each other with scrambler (5) with described grating rule displacement sensor (4), and the CPU element that links to each other with described motion control card, laser displacement sensor capture card and encoder to count card by system bus;
Described motion control card passes through the action of a turntable motor driver control turntable motor (6), and then controls described numerical control rotating platform (1) action; Motion control card is simultaneously by a stepper motor driver control step motor (7) action.
3. cam contour according to claim 2 detects and uses digital control system, and it is characterized in that: the anglec of rotation at described cam (10) is θ iThe time, the spacing of the outline of the cam that records (10) and laser ranging head (2) i.e. first pitch measurements is
Figure 2011100963903100001DEST_PATH_IMAGE002
Simultaneously, grating rule displacement sensor (4) measure described slide block (8) in the horizontal direction with the hard zero-bit of grating rule displacement sensor (4) (
Figure 2011100963903100001DEST_PATH_IMAGE004
) spacing promptly second pitch measurements be
Figure 2011100963903100001DEST_PATH_IMAGE006
, i=1,2,3 ... n; I detects described first, second pitch measurements in the process that rotates a circle of cam (10) simultaneously
Figure 144210DEST_PATH_IMAGE002
, Number of times, 0 °≤θ i＜360 °;
The detection method that described cam contour detects with digital control system comprises:
A), with the spacing of the cylindrical of laser ranging head (2) and axle (1-1) i.e. first spacing
Figure 2011100963903100001DEST_PATH_IMAGE008
Be controlled in the range of laser ranging head (2), detect and write down described first spacing then
Figure 2011100963903100001DEST_PATH_IMAGE010
, detect simultaneously and write down described slide block (8) in the horizontal direction with described hard zero-bit (
Figure 808681DEST_PATH_IMAGE004
) i.e. second spacing of spacing
Figure 2011100963903100001DEST_PATH_IMAGE012
B), the no gap of cam (10) is matched with on the described axle (1-1), if the outline data of known cam (10)
Figure 2011100963903100001DEST_PATH_IMAGE014
, then when beginning to control cam (10) and rotating a circle, control laser ranging head (2) relatively cam (10) outline according to +
Figure 741182DEST_PATH_IMAGE010
Orbiting motion; Simultaneously, control described first pitch measurements All the time be in the range of laser ranging head (2), and obtain and the anglec of rotation θ of cam (10) iCorresponding described first, second pitch measurements
Figure 84756DEST_PATH_IMAGE002
,
Figure 592835DEST_PATH_IMAGE006
C), by axle diameter d and described
Figure 439569DEST_PATH_IMAGE010
,
Figure 40314DEST_PATH_IMAGE012
,
Figure 972498DEST_PATH_IMAGE002
,
Figure 785733DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam (10)
Figure 2011100963903100001DEST_PATH_IMAGE016
:
Figure 2011100963903100001DEST_PATH_IMAGE018
D), with described utmost point footpath measured value
Figure 221394DEST_PATH_IMAGE016
With described outline data Compare, draw the outline mismachining tolerance of cam (10).
4. cam contour according to claim 2 detects and uses digital control system, and it is characterized in that: the anglec of rotation at described cam (10) is θ iThe time, the spacing of the outline of the cam that records (10) and laser ranging head (2) i.e. first pitch measurements is
Figure 881362DEST_PATH_IMAGE002
Simultaneously, grating rule displacement sensor (4) measure described slide block (8) in the horizontal direction with the hard zero-bit of grating rule displacement sensor (4) (
Figure 731245DEST_PATH_IMAGE004
) spacing promptly second pitch measurements be
Figure 552570DEST_PATH_IMAGE006
, i=1,2,3 ... n; I detects described first, second pitch measurements in the process that rotates a circle of cam (10) simultaneously
Figure 229539DEST_PATH_IMAGE002
,
Figure 136315DEST_PATH_IMAGE006
Number of times, 0 °≤θ i＜360 °;
The detection method that described cam contour detects with digital control system comprises:
A), with the spacing of the cylindrical of laser ranging head (2) and axle (1-1) i.e. first spacing
Figure 291353DEST_PATH_IMAGE010
Be controlled in the range of laser ranging head (2), detect and write down described first spacing then
Figure 498343DEST_PATH_IMAGE010
, detect simultaneously and write down described slide block (8) in the horizontal direction with described hard zero-bit ( ) i.e. second spacing of spacing
Figure 943548DEST_PATH_IMAGE012
B), the no gap of cam (10) is matched with on the described axle (1-1), if the outline data of unknown cam (10), then when beginning to control cam (10) and rotating a circle, control described slide block (8) and be according to described first pitch measurements that laser ranging head (2) records Size do near or away from the straight-line displacement of cam (10), to control described first pitch measurements
Figure 963774DEST_PATH_IMAGE002
All the time be in the range of laser ranging head (2), and obtain and the anglec of rotation θ of cam (10) iCorresponding described first, second pitch measurements
Figure 215501DEST_PATH_IMAGE002
,
Figure 831291DEST_PATH_IMAGE006
C), by axle diameter d and described
Figure 859289DEST_PATH_IMAGE010
, ,
Figure 433807DEST_PATH_IMAGE002
,
Figure 802472DEST_PATH_IMAGE006
, calculate the utmost point footpath measured value of cam (10) :
。
CN2011100963903A 2011-04-17 2011-04-17 Numerical control system for contour detection of cam Expired - Fee Related CN102200762B (en)

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CN201210226030.5A Division CN102707667B (en) 2011-04-17 2011-04-17 Cam contour detection method
CN2012102308412A Division CN102722139B (en) 2011-04-17 2011-04-17 Detection method of numerical control system for detecting contour of cam

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CN103925902A (en) * 2014-04-08 2014-07-16 北京工业大学 Profile tolerance error measurement device and method based on arc surfaced cam isometric model
CN104627762A (en) * 2014-12-05 2015-05-20 中国矿业大学 Detection system and detection method of friction elevator rope groove wear loss
US20170326684A1 (en) * 2015-01-21 2017-11-16 Maxphotonics Corporation Laser marking head and laser marking machine
CN105278553A (en) * 2015-10-13 2016-01-27 华中科技大学 Dual-controller synchronization contour control method
CN106091944A (en) * 2016-07-18 2016-11-09 电子科技大学 A kind of creep age distance measurement apparatus of suspension insulator
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