CN104742016B - Plane conjugate cam profile detection and grinding machining device control method - Google Patents

Plane conjugate cam profile detection and grinding machining device control method Download PDF

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Publication number
CN104742016B
CN104742016B CN201510130349.1A CN201510130349A CN104742016B CN 104742016 B CN104742016 B CN 104742016B CN 201510130349 A CN201510130349 A CN 201510130349A CN 104742016 B CN104742016 B CN 104742016B
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China
Prior art keywords
grinding
conjugate cam
cam
planar conjugate
planar
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CN201510130349.1A
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Chinese (zh)
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CN104742016A (en
Inventor
郭建江
张建生
沈洪雷
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常州工学院
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Priority to CN201510130349.1A priority Critical patent/CN104742016B/en
Priority to CN201310048860.8A priority patent/CN103144034B/en
Publication of CN104742016A publication Critical patent/CN104742016A/en
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Publication of CN104742016B publication Critical patent/CN104742016B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/12Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/02Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • 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 discloses a plane conjugate cam profile detection and grinding machining device control method. The method is characterized in that when a grinding wheel grinding head of a grinding mechanism of a detection and grinding device is controlled to conduct grinding machining on the outer profile of a plane conjugate cam, and a second laser measuring head of a cam inner profile detection device conducts reciprocating movement in the axial direction of the plane conjugate cam and measures the profile line in the axial direction of the inner profile of the plane conjugate cam. When the grinding wheel grinding head of the grinding mechanism of the detection and grinding device is controlled to conduct grinding machining on the inner profile of the plane conjugate cam, a first laser measuring head of a cam outer profile detection device conducts reciprocating movement in the axial direction of the plane conjugate cam and measures the profile line in the axial direction of the outer profile of the plane conjugate cam. When the cam is rotated by a circle, the detection and grinding device can conduct on-line detection on the size of one of the inner profile and the outer profile of the plane conjugate cam in the periphery direction and conduct grinding on the other of the inner profile and the outer profile of the plane conjugate cam at the same time.

Description

A kind of profile of planar conjugate cam detection and the control method of abrasive machining device
Technical field
The present invention relates to mechanical manufacturing field, and in particular to a kind of to detect using profile of planar conjugate cam and grinding The control method that device is detected to profile of planar conjugate cam and is ground.
Background technology
Cam mechanism is the drive mechanism being mainly made up of cam, driven member and frame.Cam leads to according to the difference of form Often it is divided into three kinds of disc cam, translating cam and cylindrical cam.Disc cam is divided into dish type cam ring and dish type external cam again, because Seldom it is used for dish type cam ring, therefore commonly called disc cam refers both to dish type external cam.According to the motion rail of driven member The difference of mark, cam are divided into plane cam and space cam again.Plane cam refers to the motion of cam plane of movement and driven member Plane is parallel to each other or overlaps, and disc cam and translating cam belong to plane cam, and space cam refers to the fortune of driven member Dynamic rail mark is space curve, and cylindrical cam belongs to space cam.Cam can be divided into groove again according to the different of external constraint form Cam, cam flange, constant amplitude cam and conjugate cam.A pair of disc cams that conjugate cam is often referred to mutual consolidation are (namely double Disc cam).The respective profile (namely outer circumferential surface of cam) of this pair of cam is corresponding on same driven member respectively Pairing element contact.2 cams of conjugate cam are fixedly mounted with the same axis by certain position, make the two cams each Keep conjugacy respectively in rise and backhaul, and then ensure that Double-disk cam is sealed with driven member.According to the difference of driven member Forms of motion, Double-disk cam is divided into oscillating follower conjugate cam and direct acting follower lever conjugate cam again.Conjugate cam Second form be:On the disc cam of same ring-type, 2 dish type profile positions are set, namely it is inside in the week of cam Side surface and outer circumferential surface are respectively provided with a corresponding cam contour position (referred to as inside and outside contour), and inside and outside contour Shape it is similar, as the plane of movement of the driven member of this conjugate cam is parallel to each other with cam plane of movement or overlaps, therefore Can be described as planar conjugate cam.Planar conjugate cam is can be widely applied in various automated machines, such as spinning warp knitting machine, print Brush machine etc., wherein spinning warp knitting machine needle cam of rising to the bait is exactly planar conjugate cam defined above.Profile of planar conjugate cam grinds Cut and belong to non-circular grinding, contour curve is complicated and inside and outside contour size will also ensure size conjugation concordance, adds so as to be ground Work is larger with detection difficulty.
Prior art profile of planar conjugate cam is carried out the equipment of grinding mainly using numerical control machining center or Special grinding machine, in grinding, in addition it is also necessary to carry out detecting to the inside and outside contour and mismachining tolerance of planar conjugate cam, internally Outline grinding allowance and grinding and feeding amount are determined, and adopt artificial on-line operation mode more or adopt above-mentioned detection Use offline inspection mode, not only accuracy of detection is not high, and it is difficult to ensure that planar conjugate cam inside and outside contour size conjugation concordance, Also there is a problem of that grinding efficiency is very low.
Chinese patent literature CN102589469A (Application No. 201210026457.0) discloses one kind, and " planar conjugate is convex Wheel contour detecting device and its control method ".Although the detection means of the planar conjugate cam involved by the document can be to flat The inside and outside contour of face conjugate cam is measured simultaneously, and so as to can guarantee that cam conjugation concordance, but which belongs to contact type measurement, Certainty of measurement needs further to improve.In addition, the measurement apparatus are only merely off-line measurement device, not with grinding Function.
Chinese patent literature CN201195276Y (number of patent application 200820034576.X) discloses a kind of " on-line testing Numerically-controlled cam grinder ".Grinding machine described in the document is that one kind can also synchronously to cam while grinding is carried out to cam Carry out the grinding machine of on-line testing.In the document, involved cam is according to shown in its accompanying drawing, it should for plane disc cam, so Its measurement for carrying out and processing are also simply implemented on the profile (namely outer circumferential) of disc cam.Although the test of the document It is Real time auto measure, but, its certainty of measurement is still relatively low.
Chinese patent literature CN102147238B (number of patent application 201110051991.2), CN102175181B (patents Application number 201110051993.1), CN102122144B (number of patent application 201110051996.5) and CN102200762B (specially 201110096390.3) sharp application number individually discloses a kind of " device for detecting cam profile ", " inspection of device for detecting cam profile Survey method ", " for the digital control system of cam contour detection " and " cam contour detection digital control system ".These four described are examined When surveying device or detecting system work, first cam will be removed from process equipment, then be detected, such as detection does not conform to Lattice, also need cam is reinstalled process equipment and repositioned to continue processing, cause work efficiency to substantially reduce, and described detection Object be all plane disc cam outline.
Chinese patent literature CN101434053B (number of patent application 20081020397.4), CN101561250B (patent Shens Please number 200910052043.3) and CN101259596A (number of patent application 200810023391.3) individually disclose it is a kind of " convex Wheel non-circular grinding is automatically positioned and On-line Measuring Method and device ", " method for intelligent position finding and online survey Amount method " and " a kind of numerically-controlled cam grinder ", first its on-line measurement in 3 described documents belong to contact type measurement, Certainty of measurement is low, is likely to result in the cam face after processing and sustains damage, and measurement head is easy to wear during contact measurement.The Two documents its on-line measurements belongs to laser image measurement, and detection means is complicated, and manufacture maintenance cost is higher.Above-mentioned first 2 kinds Cam contour grinding attachment and detection method are all served only for plane disc cam outline.3rd document is then can only to carry out adding Work, is still needed to cam is removed on equipment during detection and is detected by other testing equipment.
The content of the invention
The purpose of the present invention is to propose to a kind of inside and outside contour to planar conjugate cam is synchronous respectively be ground and on-line checking The control method worked continuously.
The basic technical scheme for realizing the object of the invention is:A kind of profile of planar conjugate cam detection and abrasive machining device Control method, be characterized in:Using profile of planar conjugate cam detection and abrasive machining device include control system, machine Body, be arranged on fuselage can along the table mechanism that X-axis Y-axis is moved, the cam being fixedly installed on table mechanism rotate Mechanism and the detection grinding attachment being fixedly installed on fuselage.The control system control table mechanism, cam rotation mechanism With the action of detection grinding attachment.Detection grinding attachment includes grinding mechanism and on-line measuring device.
Above-mentioned grinding mechanism includes being ground workbench and emery wheel grinding-head.Grinding workbench is fixedly installed on fuselage.Online Detection means includes cam outline on-line measuring device and cam Internal periphery on-line measuring device.Cam outline on-line checking Device includes first laser measurement head, first straight line motor and first straight line motor driver.First straight line motor is by its stator It is fixedly installed on the rear side of grinding workbench of grinding mechanism.First laser measurement head is fixed by the first connection measurement bar and is set Put on the mover of first straight line motor, the dynamic of first straight line motor is controlled by first straight line motor driver by control system The dynamic first laser measurement head of subband carries out X to the outer profile size of traverse measurement planar conjugate cam.Cam Internal periphery is examined online Surveying device includes second laser measurement head, second straight line motor and second straight line motor driver.Second straight line motor is fixed by which Son is fixedly installed on the front side of grinding workbench of grinding mechanism.Second laser measurement head is fixed by the second connection measurement bar It is arranged on the mover of second straight line motor, second straight line motor is controlled by second straight line motor driver by control system Mover drives second laser measurement head to carry out X to the Internal periphery size of traverse measurement planar conjugate cam.First laser measurement head, Second laser measurement head is on same X-Y plane with the emery wheel grinding-head of grinding mechanism, and the axis of three is parallel to each other, and The axis of planar conjugate cam is located on X-Y plane.
Above-mentioned first laser measurement head is L with the benchmark spacing of the axis of emery wheel grinding-headw, second laser measurement head and emery wheel The benchmark spacing of the axis of bistrique is Ls, it is θ in the anglec of rotation of the planar conjugate camiWhen, the installation of planar conjugate cam Axis is l with the spacing of the axis of emery wheel grinding-headui, planar conjugate cam face is l with the spacing of grinding workbench Y-axis linevi, The outline of the planar conjugate cam of on-line measurement is l with the pitch measurements of first laser measurement head1i, the plane of on-line measurement Conjugate cam Internal periphery is l with the pitch measurements of second laser measurement head2i, 0 °≤θi≤ 360 °, θi=360/n, i=1,2, 3......,n.While detecting θ during n rotates a circle for planar conjugate cami、l1iAnd l2iThe number of times of measured value.
The control method of above-mentioned profile of planar conjugate cam detection and abrasive machining device has steps of:
1., by the on-line measuring device of detection grinding attachment to planar conjugate cam inside and outside contour size on-line measurement. Measure before line measurement is divided into planar conjugate cam ground and during grinding terminates rear and grinding work.In planar conjugate cam ground Front and grinding terminates rear state, makes planar conjugate cam rotate 1 week with each θiAngle respectively does " intermittent rotary " motion, every Individual intermittent rotary cycle, first laser measurement head respectively also can be simultaneously in the axial directions of planar conjugate cam with second laser measurement head Do faster reciprocal motion to measure on contour line.The on-line measurement in planar conjugate cam ground, revolves planar conjugate cam Turn 1 week with each θiAngle respectively does slow continuous rotary motion, and first laser measurement head is existed respectively with second laser measurement head Faster reciprocal motion is done on the axial internal and external contour line of planar conjugate cam to measure.The rotary speed of planar conjugate cam is 1 turn/60 points to 1 turn/20 points.First laser measurement head is 3000 millis with the speed of the linear reciprocating motion of second laser measurement head M/min to 10000 milli m/min.
2., the outline pole for going out planar conjugate cam according to the inside and outside contour Size calculation of the planar conjugate cam for measuring is sat Mark radial dimension and Internal periphery polar coordinate radial dimension the outer Internal periphery polar coordinate radial direction with planar conjugate cam to be processed Size is compared, and draws mismachining tolerance and allowance.Then by planar conjugate cam outline polar coordinate radial dimension most Processing zero point of the big value as planar conjugate cam ground.Then planar conjugate cam is driven to shift to outline by workbench At emery wheel grinding-head, complete planar conjugate cam cutting zero point and be automatically positioned.And corase grind plane is automatically determined altogether according to measurement data The processing amount of feeding of yoke cam outline.
3., the processing amount of feeding 2. determined according to step is by detecting the grinding mechanism of grinding attachment to planar conjugate cam Outline carries out corase grind grinding, while convex to planar conjugate by the cam Internal periphery on-line measuring device of on-line measuring device The Internal periphery of wheel is measured.
4., complete planar conjugate cam outline carry out corase grind grinding after, return to processing zero point, by detection grinding The grinding mechanism of device carries out corase grind grinding to the Internal periphery of planar conjugate cam, while by the cam of on-line measuring device Outline on-line measuring device is measured to the outline of planar conjugate cam.Next step essence is calculated according to the data of measurement The processing amount of feeding of flat surface grinding conjugate cam outline.
After the corase grind grinding of the Internal periphery for 5., completing planar conjugate cam, return to processing zero point, according to step 4. in Finished plane conjugate cam outline the processing amount of feeding by detecting the grinding mechanism of grinding attachment to planar conjugate cam Outline carries out fine grinding grinding, while convex to planar conjugate by the cam Internal periphery on-line measuring device of on-line measuring device The Internal periphery of wheel is measured.The processing feeding of next step finished plane conjugate cam Internal periphery is calculated according to the data of measurement Amount.
After the fine grinding grinding of the outline for 6., completing planar conjugate cam, return to processing zero point, according to step 5. in Finished plane conjugate cam Internal periphery the processing amount of feeding by detecting the grinding mechanism of grinding attachment to planar conjugate cam Outline carries out fine grinding grinding, while convex to planar conjugate by the cam outline on-line measuring device of on-line measuring device The outline of wheel is measured.
After the fine grinding grinding of the Internal periphery for 7., completing planar conjugate cam, by the cam lubrication groove of on-line measuring device Wide on-line measuring device is measured to the Internal periphery of planar conjugate cam and calculates planar conjugate cam Internal periphery polar coordinate Radial dimension.According to step 6. in the outline data of planar conjugate cam that measure calculate outline polar coordinate radial ruler It is very little.By above-mentioned planar conjugate cam outer, Internal periphery polar coordinate radial dimension and planar conjugate cam to be processed outer, Internal periphery pole Coordinate radial dimension is compared, and show that planar conjugate cam is outer, Internal periphery polar coordinate radial dimension mismachining tolerance judges processing Whether planar conjugate cam is qualified, can repeat automatically above-mentioned corresponding steps to planar conjugate cam wheel if necessary to repair compensation Exterior feature carries out further grinding.
Technical scheme based on above-mentioned basic technical scheme is:The step 1. in first laser measurement head and the It is 0.12 second to 2 seconds that dual-laser measurement head measures time once on the axial profile line of planar conjugate cam.
Technical scheme based on above-mentioned appropriate technical solution is:The step 1. in planar conjugate cam in foreign steamer Wide size on-line measurement, the initial position of first laser measurement head and second laser measurement head is in the respective linear electric motors of X-direction Stator x1Place, and make first laser measurement head and second laser measurement head before and after same edge on the vertical guide for arranging. Drive cam rotation mechanism is moved along X-axis Y-axis by table mechanism makes planar conjugate cam to be processed enter measurement position lui>Ls,lvi=x1And lvi<x2Measure.
Technical scheme based on techniques described above scheme is:With any position of planar conjugate cam when 2. the step measures Put θiTo measure zero point, measurement makes planar conjugate cam rotate 1 week with each θiAngle respectively rotates, in each cam Rotary course, first laser measurement head and second laser measurement head do quick respectively on the axial profile line of planar conjugate cam Reciprocating motion is measured.First laser measurement head measures this θi1 group of l of position1xjAxial outer contour data, second laser Measurement head measures this θi1 group of l of position2xjAxial inner outline data, wherein j are laser measuring head adopting in axial profile line Sample number of times, by finally drawing the θ to every group of data " going extreme value " and " meansigma methodss " data filteringiThe l of position1iAnd l2i
Each θ of planar conjugate cam outline and Internal periphery is measured by said methodiThe l of angle position1iAnd l2i, with And the spacing coordinate l of the mounting axis of planar conjugate cam and emery wheel grinding-head axisui, the outer of planar conjugate cam can be calculated Profile polar coordinate radial dimension ρ1i)=lui+Lw-l1i.The Internal periphery polar coordinate radial dimension ρ of planar conjugate cam2i)= lui-Ls+l2i.By described ρ1i) and ρ2i) outer Internal periphery polar coordinate radial dimension with planar conjugate cam to be processed ρ1=ρ (θ) and ρ2=ρ (θ) compares, and draws mismachining tolerance and allowance.
By the planar conjugate cam outline polar coordinate radial dimension maximum ρ for measuring1maxi) point it is convex as planar conjugate The processing zero point of wheel grinding, now redefines processing zero point size θ hereini0, outline l1i=l10, Internal periphery l2i= l20, the rotational positioning of control plane conjugate cam is in planar conjugate cam angle θ0, outline l10With Internal periphery l20, then plane is common Yoke cam is located at processing zero point.
Above-mentioned control movable workbench causes planar conjugate cam face reference dimension lvi=x0.Control first straight line motor First laser measurement head is driven to be located at l by its movervi=x1Place, control second straight line motor drive second laser to survey by its mover Amount head is located at lvi=x1Place, causes the end face of planar conjugate cam to be located at x while controlling movable workbench0Place, completes plane altogether Yoke cam cutting zero point is automatically positioned.
Technical scheme based on techniques described above scheme is:3. the step passes through blank planar conjugate cam to be processed After processing zero-point positioning, workbench drives planar conjugate cam outline is shifted at emery wheel grinding-head, and grinding is using control Planar conjugate cam 2-axis linkage NC Interpolation is moved realizes planar conjugate cam outline with emery wheel grinding-head relative rotary motion Corase grind is cut.The processing amount of feeding is determined according to the allowance of above-mentioned on-line measurement planar conjugate cam blank.In grinding Internal periphery While, second laser measurement head moves reciprocatingly on the axial profile line of planar conjugate cam and measures, and measures plane The axial inner outline data of conjugate cam.
Technical scheme based on techniques described above scheme is:4. the step completes above-mentioned blank planar conjugate cam After outline corase grind is cut, workbench drives planar conjugate cam to return to processing zero point θ0Place, using above-mentioned planar conjugate cam outside The method that profile corase grind is cut carries out planar conjugate cam Internal periphery corase grind and cuts.Cut in grinding planar conjugate cam Internal periphery corase grind Meanwhile, the measurement of planar conjugate cam outer profile size, i.e. first laser measurement head are completed flat by first laser measurement head Move reciprocatingly on the axial profile line of face conjugate cam and measure, measure 1 group of l1xjAxial profile line number evidence, by every Group data " going extreme value " and " meansigma methodss " data filtering finally draws the l of the position1i, ρ is calculated by above-mentioned formula1i), and then determine that next step refines the processing amount of feeding of outline.
Technical scheme based on techniques described above scheme is:5. the step is completed in above-mentioned blank planar conjugate cam It is after profile corase grind is cut, thick using above-mentioned planar conjugate cam outline according to the processing amount of feeding of the fine grinding outline of above-mentioned determination The method of grinding carries out planar conjugate cam outline fine ginding.Internal periphery size is completed by second laser measurement head simultaneously Measurement, i.e., second laser measurement head moves reciprocatingly on the axial profile line of planar conjugate cam and measures, and measures 1 group l2xjAxial profile line number evidence, by the l that the position is finally drawn to every group of data " going extreme value " and " meansigma methodss " data filtering2i, ρ is calculated by above-mentioned formula2i), and then determine that next step refines the processing amount of feeding of Internal periphery.
Technical scheme based on techniques described above scheme is:The step is 6. according to the above-mentioned fine grinding Internal periphery for measuring The processing amount of feeding carries out planar conjugate while carrying out planar conjugate cam Internal periphery fine ginding using the 4. described method of step The measurement of cam outer profile size.
Technical scheme based on techniques described above scheme is:7. the step completes the lubrication groove of finished plane conjugate cam After exterior feature, above-mentioned detection method is taken to detect the outer profile size ρ of planar conjugate cam1i) and Internal periphery size ρ2i).Together When by described ρ1i) and ρ2i) Internal periphery polar coordinate radial dimension ρ outer with planar conjugate cam to be processed1=ρ (θ) and ρ2=ρ (θ) compares, and show that the outer Internal periphery polar coordinate radial dimension mismachining tolerance of planar conjugate cam judges processing planar conjugate Whether cam is qualified, can repeat automatically above-mentioned corresponding procedure of processing if necessary to repair compensation.
The present invention has positive effect:
(1), this alternately on-line measurement of each profile and grinding to planar conjugate cam of the invention is continuous Operational method, during work, first can be by manually planar conjugate cam be fixed on cam rotation mechanism, then by existing accordingly Line detector sequentially or simultaneously carries out initial on-line checking to the inside and outside contour of planar conjugate cam, or to inside and outside contour A profile carry out initial on-line checking.Then, you can compare set in advance with corresponding measured value by control system Corresponding allowance control grinding mechanism carries out grinding to the exterior feature of measuring wheel of planar conjugate cam.Control system is in control While certain profile of grinding processed, also controlling on-line measuring device is carried out accordingly to another profile of planar conjugate cam On-line checking, so as to the grinding for next step to another profile provides foundation.Need not be by planar conjugate cam Detection is completed by unloading from cam rotation mechanism, work efficiency is not only increased, and be can fully ensure that planar conjugate is convex The conjugacy of wheel inside and outside contour size, while being also effectively improved certainty of measurement and machining accuracy and surface roughness etc. Level.
(2), on-line measuring device of the invention adopts the method for " laser scanning line survey " come measurement plane conjugate cam wheel Wide size, namely pass through the circumferential interior outside table of first laser measurement head and second laser measurement head to planar conjugate cam respectively Face do left and right to (namely X-direction) reciprocating motion while measure, and obtain corresponding θi2 groups of l of position1xjWith l2xjAxial profile line number evidence, by finally drawing the θ to every group of data " going extreme value " and " meansigma methodss " data filteringiPosition l1iAnd l2i, the measurement error of tradition " point is surveyed " is effectively prevent, certainty of measurement is further increased.
(3), the multiple different lifting curve compositions of each freedom of the inside and outside contour of planar conjugate cam, it is necessary to before grinding Determine that appropriate grinding positioning starting point (processing zero point) just ensures machining accuracy.In addition, also needing according to blank dimension size Difference determine corresponding allowance, and each position of profile of planar conjugate cam is determined according to the distribution of allowance The grinding amount of feeding.The method of the present invention is automatically positioned with automatic detection plane altogether using planar conjugate cam cutting zero point The inside and outside contour size of yoke cam, the thick ground finish amount of feeding of on-line automatic determination planar conjugate cam, and can on-line measurement put down Mismachining tolerance after the processing of face conjugate cam, realizes repairing and tool wear diagnostic function, change tradition " is determined empirically plus The work amount of feeding " and " manual offline inspection " method, greatly improve the efficiency of planar conjugate camshaft grinding, and effectively can carry High manufacturing accuracy and roughness grade.
Description of the drawings
Fig. 1 is the profile of planar conjugate cam detection and the structural representation of abrasive machining device using the method for the present invention Figure;
Schematic top plan views of the Fig. 2 for the table mechanism in Fig. 1;
Fig. 3 be the present invention detection grinding attachment at the same time measurement plane conjugate cam blank inside and outside contour when measurement it is former Reason schematic diagram, the first laser measurement head and second laser measurement head in figure are respectively positioned on a setting of measurement in the X direction Original position;The direction of observation of Fig. 3 and the A of Fig. 1 are to identical;
Schematic diagrams of the Fig. 4 for the first laser measurement head measurement plane conjugate cam outline in Fig. 3, first in figure swash Photo measure head is located at the final position of a setting of measurement;
Fig. 5 is that the detection grinding attachment shown in Fig. 3 also exists while the outline to planar conjugate cam is ground Line measures the schematic diagram of its Internal periphery;
Fig. 6 is that the detection grinding attachment shown in Fig. 3 also exists while the Internal periphery to planar conjugate cam is ground Line measures the schematic diagram of its outline;
Fig. 7 is the schematic diagram of the control system of the present invention;
The schematic diagram of the planar conjugate cam that Fig. 8 is processed when being and observing from the right of Fig. 1;
Fig. 9 is control method flow chart.
Labelling in above-mentioned accompanying drawing is as follows:
Profile of planar conjugate cam detection and abrasive machining device 1, fuselage 11,
Table mechanism 12, X-axis base 12-1, Y-axis base 12-2, connecting seat 12-3, workbench 12-4, X-axis straight-line electric Machine 12-5, stator 12-5-1, mover 12-5-2, Y-axis linear electric motors 12-6, stator 12-6-1, mover 12-6-2, X-axis straight line lead Rail 12-7, Y-axis line slideway 12-8, X-axis straight-line guide rail slide block 12-9, Y-axis straight-line guide rail slide block 12-10, X-axis movement detection light Grid 12-11, Y-axis movement detection grating 12-12,
Cam rotation mechanism 13, head tree 13-1, the first AC servo motor 13-2, reduction box 13-3, angular encoder 13-4, fixing nut 13-5,
Detection grinding attachment 10, grinding mechanism 14 are ground workbench 14-1, the second AC servo motor 14-2, governing box 14-3, emery wheel grinding-head 14-4,
On-line measuring device 15, cam outline on-line measuring device 15a, first laser measurement head 15-1, first straight line Motor 15-3, stator 15-3-1, mover 15-3-2, first straight line motor driver 15-5, the first connection measurement bar 15-7, cam Internal periphery on-line measuring device 15b, second laser measurement head 15-2, second straight line motor 15-4, stator 15-4-1, mover 15- 4-2, second straight line motor driver 15-6, second connect measurement bar 15-9,
Planar conjugate cam 100.
Specific embodiment
The description in the orientation of the present invention is carried out according to the orientation shown in Fig. 1, namely the direction up and down shown in Fig. 1 is The direction up and down of description, a side of court of Fig. 1 institutes is front, is rear away from a side of Fig. 1.
(embodiment 1)
See Fig. 1 and Fig. 2, the plane that the profile of planar conjugate cam detection of the present embodiment and the control method being ground are adopted is altogether Yoke cam contour is detected and abrasive machining device 1 includes control system, detection grinding attachment 10, fuselage 11, mobile work platform machine Structure 12 and cam rotation mechanism 13.Mobile work platform mechanism 12 is arranged on fuselage 11 can be relative to fuselage 11 on an x-y plane Motion, the X-Y plane are that (the present embodiment is horizontal plane, i.e. the angle with horizontal plane horizontal by the plane of any angle For 0 degree), and the motion for being carried out is by control system control.Cam rotation mechanism 13 is fixedly installed on table mechanism 12 And its action is fixedly installed on fuselage 11 and its action is by control system control by control system control, detection grinding attachment 10 System.
See Fig. 1 and Fig. 2, table mechanism 12 includes X-axis base 12-1, Y-axis base 12-2, connecting seat 12-3, workbench 12-4, X-axis linear electric motors 12-5, Y-axis linear electric motors 12-6, X-axis line slideway 12-7, Y-axis line slideway 12-8, X-axis straight line Guide rail slide block 12-9, Y-axis straight-line guide rail slide block 12-10, X-axis movement detection grating 12-11 and Y-axis movement detection grating 12-12. X-axis base 12-1 is arranged on fuselage 11, and Y-axis base 12-2 is in be mutually perpendicular to set by connecting seat 12-3 and X-axis base 12-1 Put.X-axis straight-line guide rail slide block 12-9 is arranged on the downside of connecting seat 12-3, and X-axis line slideway 12-7 is along X to being arranged on X-axis On on the upside of base 12-1, X-axis straight-line guide rail slide block 12-9 is slidably matched down from above and is arranged on X-axis line slideway 12-7.X On the mover 12-5-2 of axle linear electric motors 12-5 is fixedly installed on the upside of X-axis base 12-1, the stator of X-axis linear electric motors 12-5 12-5-1 is fixedly installed on the downside of connecting seat 12-3.By X-axis linear electric motors 12-5 drive connection seat 12-3 along X to level Motion.X-axis movement detection grating 12-11 is arranged on the corresponding site of X-axis line slideway 12-7 and X-axis linear electric motors 12-5 structures Into closed loop control, for detecting the X-axis displacement of connecting seat 12-3.The X-axis movement detection grating 12-11 of the present embodiment adopts Changchun The closed grating of ray machine digital display company SGC series.Y-axis line slideway 12-8 is arranged on the downside of Y-axis base 12-2 along Y-direction, Y-axis Straight-line guide rail slide block 12-10 is arranged on the upside of connecting seat 12-3, and Y-axis straight-line guide rail slide block 12-10 slides from bottom to top and matches somebody with somebody Conjunction is arranged on Y-axis line slideway 12-8.The mover 12-6-2 of Y-axis linear electric motors 12-6 is fixedly installed on the upper of connecting seat 12-3 On side, the stator 12-6-1 of Y-axis linear electric motors 12-6 is fixedly installed on the downside of Y-axis base 12-2.By Y-axis linear electric motors 12-6 drives Y-axis base 12-2 along Y-direction horizontal movement.On workbench 12-4 is fixedly installed on the upside of Y-axis base 12-2.Y-axis is moved Dynamic detection grating 12-12 is arranged on the corresponding site of Y-axis line slideway 12-8 and constitutes closed loop control with Y-axis linear electric motors 12-6 System, for detecting the Y-axis displacement of Y-axis base 12-2.The Y-axis movement detection grating 12-12 of the present embodiment adopts Changchun ray machine number The serial closed gratings of aobvious company SGC.The X-axis movement detection grating 12-11 and Y-axis movement detection grating 12-12 of the present embodiment Using the closed grating of Changchun ray machine digital display company SGC series.X-axis linear electric motors 12-5 and Y-axis straight-line electric in the present embodiment Machine 12-6 is using direct drive linear electric motors (DDL) series of Kollmorgen Corporations.
See Fig. 1, cam rotation mechanism 13 includes head tree 13-1, the first AC servo motor 13-2, reduction box 13-3, angle Degree encoder 13-4 and fixing nut 13-5.Head tree 13-1 verticals are fixedly installed on the workbench 12-4 of table mechanism 12 On.First AC servo motor 13-2 is fixedly installed on head tree 13-1.Reduction box 13-3 is fixedly installed on head tree 13-1 On.The output shaft of reduction box 13-3 along X to setting, and towards right.Angular encoder 13-4 is co-axially located at a left side for output shaft On end, the angular encoder 13-4 of the present embodiment is using the auspicious general ZKT11 series photoelectric encoder in Wuxi.Fixing nut 13-5 is screwed On the right-hand member of output shaft, and planar conjugate cam 100 is fixedly clamped on output shaft right-hand member corresponding site.By the first exchange Servomotor 13-2 drives reduction box 13-3 and drives planar conjugate cam 100 to revolve around C axles by the output shaft of reduction box 13-3 Turn, by the anglec of rotation of angular encoder 13-4 measurement planes conjugate cam 100.
See Fig. 1, Fig. 3, Fig. 5 and Fig. 6, detection grinding attachment 10 includes grinding mechanism 14 and on-line measuring device 15.Grinding Mechanism 14 includes being ground workbench 14-1, the second AC servo motor 14-2, governing box 14-3 and emery wheel grinding-head 14-4.Grinding work Make platform 14-1 to be fixedly installed on fuselage 11.Governing box 14-3 is fixed on grinding workbench 14-1, the output of governing box 14-3 Axle along X to setting, and towards left.Emery wheel grinding-head 14-4 is fixedly installed on the left end of the output shaft of governing box 14-3.Second AC servo motor 14-2 is fixedly installed on grinding workbench 14-1, the second AC servo motor 14-2 and governing box 14-3's Input shaft connects, and drives governing box 14-3 by the second AC servo motor 14-2 and drives sand by the output shaft of governing box 14-3 Wheel bistrique 14-4 is rotated, and controls the rotating speed of the second AC servo motor 14-2 to adjust emery wheel grinding-head 14-4's by control system Grinding speed.The first AC servo motor and the second AC servo motor in the present embodiment is using Schneider company Lexium 23D Series AC servos.
See Fig. 1, Fig. 3, Fig. 5 and Fig. 6, on-line measuring device 15 includes cam outline on-line measuring device 15a and cam Internal periphery on-line measuring device 15b.Cam outline on-line measuring device 15a includes first laser measurement head 15-1, first straight Line motor 15-3 and first straight line motor driver 15-5.First straight line motor 15-3 is fixedly installed on mill by its stator 15-3-1 Cut on the rear side of grinding workbench 14-1 of mechanism 14.First laser measurement head 15-1 is fixed by the first connection measurement bar 15-7 It is arranged on the mover 15-3-2 of first straight line motor 15-3, is controlled by first straight line motor driver 15-5 by control system The mover 15-3-2 of first straight line motor 15-3 drives first laser measurement head 15-1 to carry out X to traverse measurement planar conjugate cam Outer profile size.Cam Internal periphery on-line measuring device 15b includes second laser measurement head 15-2, second straight line motor 15-4 With second straight line motor driver 15-6.Second straight line motor 15-4 is fixedly installed on grinding mechanism 14 by its stator 15-4-1 On the front side of grinding workbench 14-1.Second laser measurement head 15-2 is fixedly installed on second by the second connection measurement bar 15-9 On the mover 15-4-2 of linear electric motors 15-4, second straight line electricity is controlled by second straight line motor driver 15-6 by control system The mover 15-4-2 of machine 15-4 drives second laser measurement head 15-2 to carry out X to the Internal periphery chi of traverse measurement planar conjugate cam It is very little.The emery wheel grinding-head 14-4 of first laser measurement head 15-1, second laser measurement head 15-2 and grinding mechanism 14 is in same X-Y In plane, and the axis of three is parallel to each other, and the axis of planar conjugate cam is located on X-Y plane.The of the present embodiment One laser measuring head 15-1 and second laser measurement head 15-2 are found range using Banner companies of U.S. L-GAGE LH series lasers Displacement transducer, the sensor accuracy class minimum can reach 1 μm.First straight line motor and second straight line electricity in the present embodiment Machine is using direct drive linear electric motors (DDL) series of Kollmorgen Corporations.
When profile of planar conjugate cam detection and abrasive machining device 1 are detected the grinding mechanism 14 of grinding attachment 10 by which When emery wheel grinding-head 14-4 carries out grinding to the outline of planar conjugate cam 100, by cam Internal periphery detection means 15b Second laser measurement head 15-2 moves reciprocatingly along the axial direction of planar conjugate cam 100 and to 100 Internal periphery of planar conjugate cam Contour line on axial direction is measured;When profile of planar conjugate cam detection and abrasive machining device 1 detect grinding attachment by which When the emery wheel grinding-head 14-4 of 10 grinding mechanism 14 carries out grinding to the Internal periphery of planar conjugate cam 100, by cam outside First laser measurement head 15-1 of contour detecting device 15a moves reciprocatingly in the axial direction of planar conjugate cam 100 and to flat Contour line on 100 outline axial direction of face conjugate cam is measured, and when cam rotates a circle, then detects that grinding attachment 10 can be same When the size of a profile in the inside and outside contour of planar conjugate cam 100 is carried out in the circumferential on-line checking and to plane altogether Another profile in the inside and outside contour of yoke cam 100 is ground.See Fig. 7, control system includes high-speed counting card, laser position Displacement sensor capture card, motion control card, industrial computer, PLC, switching value control module, fault detection module and touch screen Man-machine interface.The high-speed counting card of the present embodiment adopts Yan Hua companies PCI-1784U, laser displacement sensor capture card to adopt and grind Hua companies PCI-1710HGU, motion control card adopt Yan Hua companies PCI-1245, and industrial computer is embedded using magnificent ARK series is ground Industrial computer, M258 high-performance PLC of the PLC using Schneider company.
X-axis movement detection grating 12-11, Y-axis movement detection grating 12-12 and angular encoder 13-4 and high-speed counting card Signal is electrically connected, and high-speed counting card is electrically connected with industrial computer signal.High-speed counting card is used to gather X-axis movement detection grating 12- The 11 and Y-axis movement detection grating 12-12 XY axle positions shifting signals for detecting and the planar conjugate cam of angular encoder 13-4 detections 100 rotary angle signals, then the signal input for gathering to industrial computer.
First laser measurement head 21 and second laser measurement head 22 are electrically connected with laser displacement sensor collection card signal, are swashed Optical displacement sensor capture card is electrically connected with industrial computer signal.Laser displacement sensor capture card is used to gather first laser measurement The distance between the first laser measurement head 21 and 100 outline of planar conjugate cam of head 15-1 real-time detections signal and second swashs The distance between the second laser measurement head 22 of photo measure head 15-2 real-time detections and 100 Internal periphery of planar conjugate cam signal, And input a signal into industrial computer.
X-axis linear motor driver, Y-axis linear motor driver, the first AC servo motor 13-2, the second AC servo Motor 14-2, first straight line motor driver 15-5 and second straight line motor driver 15-6 and motor control card signal are electrically connected Connect.Motion control card controls the action of X-axis linear electric motors 12-5 by X-axis linear motor driver, and then controls workbench 12- 4 actions in X upwards;Motion control card controls the action of Y-axis linear electric motors 12-6 by Y-axis linear motor driver, and then Control actions of the workbench 12-4 in Y-direction.Motion control card is exchanged by the first AC servo machinery driving device control first The action of servomotor 13-2, and then control plane conjugate cam 100 is around C axle spinning movements.Motion control card is handed over by second The action of flow servo motor driver control the second AC servo motor 14-2, and then control the action of emery wheel grinding-head 14-4.Fortune Dynamic control card controls first straight line motor 15-3 actions by first straight line motor driver 15-5, and then controls first laser survey Amount actions of the head 15-1 in X upwards.Motion control card controls second straight line motor 15-4 by second straight line motor driver 26 Action, and then control action of second laser measurement head 15-2 in X upwards.Motion control card is electrically connected with industrial computer signal.
Industrial computer is connected with PLC by communication interface.Fault detection module is electrically connected with PLC signals;Switching value control Molding block is electrically connected with PLC two-way signalings;Touch screen man-machine interface is electrically connected with PLC two-way signalings.
See Fig. 3 and Fig. 4, first laser measurement head 15-1 is L with the benchmark spacing of the axis of emery wheel grinding-head 14-4w, second The benchmark spacing of the axis of laser measuring head 15-6 and emery wheel grinding-head 14-4 is Ls, in the rotation of the planar conjugate cam 100 Angle is θiWhen, the mounting axis of planar conjugate cam 100 are l with the spacing of the axis of emery wheel grinding-head 14-4ui, planar conjugate is convex The spacing that 100 end faces are taken turns with grinding workbench 14-1Y axis is lvi, the outline of the planar conjugate cam 100 of on-line measurement with The pitch measurements of first laser measurement head 15-1 are l1i, 100 Internal periphery of planar conjugate cam of on-line measurement and second laser The pitch measurements of measurement head 15-2 are l2i, 0 °≤θi≤ 360 °, θi=360/n, i=1,2,3......, n;N is common for plane While detecting θ during yoke cam 100 rotates a circlei、l1iAnd l2iThe number of times of measured value, the value of n are bigger, and the plane for measuring is altogether The polar coordinate radial dimension data of 100 inside and outside contour of yoke cam are more accurate.
See that the control method of Fig. 3 to Fig. 9, above-mentioned profile of planar conjugate cam detection and abrasive machining device includes following step Suddenly:
1., planar conjugate cam inside and outside contour size on-line measurement:Before on-line measurement is divided into the grinding of planar conjugate cam 100 Measure after terminating with grinding and in grinding work;State after terminating with grinding before planar conjugate cam 100 is ground, makes plane Conjugate cam 100 rotates 1 week with each θiAngle respectively does " intermittent rotary " motion, and in each intermittent rotary cycle, first swashs Photo measure head 15-1 also can be done on the axial profile line of planar conjugate cam 100 respectively simultaneously with second laser measurement head 15-2 Faster reciprocal motion is measured;The on-line measurement in planar conjugate cam 100 is ground, makes planar conjugate cam 100 rotate 1 week With each θiAngle respectively does slow continuous rotary motion, and first laser measurement head 15-1 is distinguished with second laser measurement head 15-2 Faster reciprocal motion is done on the axial internal and external contour line of planar conjugate cam 100 to measure;
The rotary speed of planar conjugate cam 100 is 1 turn/60 points to 1 turn/20 points;First laser measurement head 15-1 and The speed of the linear reciprocating motion of dual-laser measurement head 15-2 is 3000 millis m/min to 10000 millis m/min;First laser is measured The time that head 15-1 is measured on the axial profile line of planar conjugate cam 100 once with second laser measurement head 15-2 is 0.12 Second was to 2 seconds.
The initial position of first laser measurement head 15-1 and second laser measurement head 15-2 is in the respective linear electric motors of X-direction Stator x1Place, and make first laser measurement head 15-1 and second laser measurement head 15-2 before and after same edge to the lead for arranging On vertical plane.Drive cam rotation mechanism 13 is moved along X-axis Y-axis by table mechanism 12 makes blank planar conjugate to be processed convex Wheel 100 enters measurement position lui>Ls,lvi=x1And lvi<x2Measure.
2., planar conjugate cam cutting zero point is automatically positioned:With 100 optional position θ of planar conjugate cam during measurementiTo survey Amount zero point, measurement make planar conjugate cam 100 rotate 1 week with each θiAngle respectively rotates and (does before and after cam ground Intermittent rotary is moved, and slow rotary motion is done in cam ground), in each cam rotary course, first laser measurement head 15-1 Faster reciprocal motion is done on the axial profile line of planar conjugate cam 100 respectively with second laser measurement head 15-2 to be surveyed Amount.First laser measurement head 15-1 measures this θi1 group of l of position1xjAxial outer contour data, second laser measurement head 15-2 Measure this θi1 group of l of position2xjAxial inner outline data, wherein j are sampling number of the laser measuring head in axial profile line, By finally drawing the θ to every group of data " going extreme value " and " meansigma methodss " data filteringiThe l of position1iAnd l2i.It is this that " laser is swept Retouch line survey " measuring method of profile of planar conjugate cam size can avoid the measurement error of tradition " point survey ", effectively improve measurement Precision.
Each θ of 100 outline of planar conjugate cam and Internal periphery is measured by said methodiThe l of angle position1iWith l2i, and the spacing coordinate l of the mounting axis of planar conjugate cam 100 and emery wheel grinding-head 14-4 axisui, can calculate flat The outline polar coordinate radial dimension ρ of face conjugate cam 1001i)=lui+Lw-l1i;The Internal periphery pole of planar conjugate cam 100 Coordinate radial dimension ρ2i)=lui-Ls+l2i.By described ρ1i) and ρ2i) with planar conjugate cam 100 to be processed Outer Internal periphery polar coordinate radial dimension ρ1=ρ (θ) and ρ2=ρ (θ) compares, and draws mismachining tolerance and allowance.
By the 100 outline polar coordinate radial dimension maximum ρ of planar conjugate cam for measuring1maxi) put as plane altogether The processing zero point of the grinding of yoke cam 100, now redefines processing zero point size θ hereini0, outline l1i=l10, it is interior Profile l2i=l20, 100 rotational positioning of control plane conjugate cam is in 100 rotational angle theta of planar conjugate cam0, outline l10And lubrication groove Wide l20, then planar conjugate cam 100 is positioned at processing zero point;
Control workbench 12-4 is moved and is caused 100 end standard size l of planar conjugate camvi=x0.Control first straight line Motor 15-3 drives first laser measurement head 15-1 to be located at l by its movervi=x1Place, control second straight line motor 15-4 are moved by which Dynamic second laser measurement head 15-2 of subband is located at lvi=x1Place, causes planar conjugate cam while controlling workbench 12-4 and moving 100 end face is located at x0Place, completes the processing of planar conjugate cam 100 zero point and is automatically positioned.
3., planar conjugate cam Internal periphery corase grind allowance is roughly ground and automatically determined to planar conjugate cam outline:It is logical After crossing the above-mentioned processing of blank planar conjugate cam 100 zero-point positioning, workbench 12-4 drives planar conjugate cam 100 to make outline Shift at emery wheel grinding-head 14-4, grinding is using 100 2-axis linkage NC Interpolation of control plane conjugate cam motion (namely work Make the movement of platform Y-axis and cam rotating shaft C axles rotated) realize outside planar conjugate cam 100 with 11 relative rotary motion of emery wheel grinding-head Profile corase grind is cut.The processing amount of feeding is determined according to the allowance of above-mentioned 100 blank of on-line measurement planar conjugate cam.Adopt simultaneously With " profile synchronously grinding and on-line checking work continuously processing technique " i.e. in the same of 100 outline of grinding planar conjugate cam When, second laser measurement head 15-2 moves reciprocatingly on the axial profile line of planar conjugate cam 100 and measures, and measures flat The axial inner outline data of face conjugate cam 100.
4., planar conjugate cam Internal periphery is roughly ground and automatically determines planar conjugate cam outline ground finish surplus:It is complete After cutting into above-mentioned 100 outline of blank planar conjugate cam corase grind, workbench 12-4 drives planar conjugate cam 100 to return to processing Zero point θ0Place, it is thick that the method cut using above-mentioned 100 outline of planar conjugate cam corase grind carries out 100 Internal periphery of planar conjugate cam Grinding.Simultaneously using " profile synchronously grinding and on-line checking work continuously processing technique ", i.e., in grinding planar conjugate cam 100 While Internal periphery corase grind is cut, the measurement of 100 outer profile size of planar conjugate cam is completed by first laser measurement head 15-1, I.e. first laser measurement head 15-1 moves reciprocatingly on the axial profile line of planar conjugate cam 100 and measures, and measures 1 group l1xjAxial profile line number evidence, by the l that the position is finally drawn to every group of data " going extreme value " and " meansigma methodss " data filtering1i, ρ is calculated by above-mentioned formula1i), and then determine that next step refines the processing amount of feeding of outline.
5., planar conjugate cam outline is refined and automatically determines planar conjugate cam Internal periphery ground finish surplus:It is complete After cutting into above-mentioned 100 Internal periphery of blank planar conjugate cam corase grind, according to the processing amount of feeding of the fine grinding outline of above-mentioned determination The method cut using above-mentioned 100 outline of planar conjugate cam corase grind carries out 100 outline fine ginding of planar conjugate cam.Simultaneously The measurement of Internal periphery size is completed by second laser measurement head 15-2, i.e., second laser measurement head 15-2 is in planar conjugate cam Move reciprocatingly on 100 axial profile line and measure, measure 1 group of l2xjAxial profile line number evidence, by every group of data " going extreme value " and " meansigma methodss " data filtering finally draws the l of the position2i, ρ is calculated by above-mentioned formula2i), and then Determine that next step refines the processing amount of feeding of Internal periphery.
6., planar conjugate cam Internal periphery fine grinding and automatic detection planar conjugate cam outer profile size:According to above-mentioned survey The processing amount of feeding of the fine grinding Internal periphery for obtaining carries out 100 Internal periphery fine ginding of planar conjugate cam using the 4. described method of step While carry out the measurement of 100 outer profile size of planar conjugate cam.
7., the online error measure of planar conjugate cam inside and outside contour size and reparation compensation:Complete finished plane conjugation convex After the Internal periphery of wheel (100), above-mentioned detection method is taken to detect 100 outer profile size ρ of planar conjugate cam1i) and lubrication groove Wide size ρ2i).Simultaneously by described ρ1i) and ρ2i) with 100 outer Internal periphery polar coordinate of planar conjugate cam to be processed Radial dimension ρ1=ρ (θ) and ρ2=ρ (θ) compares, and show that 100 outer Internal periphery polar coordinate radial dimension of planar conjugate cam is processed Whether error judgment processing planar conjugate cam 100 qualified, if necessary to repair compensation can repeat automatically it is above-mentioned corresponding plus Work step is rapid.If to detect that after batch planar conjugate cam cutting all occur error excessive, illustrate that now emery wheel grinding-head abrasion is tight Weight, can be directed to the surplus of mismachining tolerance, carry out appropriate feed compensation to emery wheel grinding-head.If also occurred after compensation obvious Mismachining tolerance, system prompt emery wheel grinding-head serious wear need to change emery wheel grinding-head cutter.
Above example is used for illustrative purposes only, rather than limitation of the present invention, about the technology people of technical field Member without departing from the spirit and scope of the present invention, can also make various conversion and change, during concrete application Can be transformed with the inspiration according to above-described embodiment accordingly, therefore the technical scheme of all equivalents should be included into this Within bright scope of patent protection.

Claims (2)

1. a kind of profile of planar conjugate cam detects the control method with abrasive machining device, it is characterised in that:Using plane Conjugate cam contour detecting and abrasive machining device include control system, fuselage (11), be arranged on fuselage (11) can be along X-axis Table mechanism (12), the cam rotation mechanism (13) being fixedly installed on table mechanism (12) and the fixation that Y-axis is moved sets Put the detection grinding attachment (10) on fuselage (11);Control system control table mechanism (12), cam rotation mechanism (13) and detection grinding attachment (10) action;Detection grinding attachment (10) is including grinding mechanism (14) and on-line measuring device (15);
Grinding mechanism (14) includes grinding workbench (14-1) and emery wheel grinding-head (14-4);Grinding workbench (14-1) is fixedly installed On fuselage (11);On-line measuring device (15) is online including cam outline on-line measuring device (15a) and cam Internal periphery Detection means (15b);Cam outline on-line measuring device (15a) includes first laser measurement head (15-1), first straight line electricity Machine (15-3) and first straight line motor driver (15-5);First straight line motor (15-3) is fixedly installed by its stator (15-3-1) On the rear side of the grinding workbench (14-1) of grinding mechanism (14);First laser measurement head (15-1) is measured by the first connection Bar (15-7) is fixedly installed on the mover (15-3-2) of first straight line motor (15-3), by control system by first straight line electricity The mover (15-3-2) of machine driver (15-5) control first straight line motor (15-3) drives first laser measurement head (15-1) to enter Outer profile sizes of the row X to traverse measurement planar conjugate cam;Cam Internal periphery on-line measuring device (15b) is including second laser Measurement head (15-2), second straight line motor (15-4) and second straight line motor driver (15-6);Second straight line motor (15-4) It is fixedly installed on the front side of grinding workbench (15-4-1) of grinding mechanism (15-4) by its stator (15-4-1);Second laser Measurement head (15-2) is fixedly installed on the mover (15-4- of second straight line motor (15-4) by the second connection measurement bar (15-9) 2), on, the mover (15-4- of second straight line motor (15-4) is controlled by second straight line motor driver (15-6) by control system 2) second laser measurement head (15-2) is driven to carry out X to the Internal periphery size of traverse measurement planar conjugate cam;First laser is surveyed The emery wheel grinding-head (14-4) of amount head (15-1), second laser measurement head (15-2) and grinding mechanism (14) is in same X-Y plane On, and the axis of three is parallel to each other, and the axis of planar conjugate cam is located on X-Y plane;
First laser measurement head (15-1) is L with the benchmark spacing of the axis of emery wheel grinding-head (14-4)w, second laser measurement head (15-6) it is L with the benchmark spacing of the axis of emery wheel grinding-head (14-4)s, in the anglec of rotation of the planar conjugate cam (100) For θiWhen, the mounting axis of planar conjugate cam (100) are l with the spacing of the axis of emery wheel grinding-head (14-4)ui, planar conjugate is convex Wheel (100) end face is l with the spacing of grinding workbench (14-1) Y-axis linevi, outside the planar conjugate cam (100) of on-line measurement Profile is l with the pitch measurements of first laser measurement head (15-1)1i, planar conjugate cam (100) Internal periphery of on-line measurement Pitch measurements with second laser measurement head (15-2) are l2i, 0 °≤θi≤ 360 °, θi=360/n, i=1,2,3......, n;While detecting θ during n rotates a circle for planar conjugate cam (100)i、l1iAnd l2iThe number of times of measured value;
The control method of above-mentioned profile of planar conjugate cam detection and abrasive machining device has steps of:
1., planar conjugate cam (100) inside and outside contour size is existed by the on-line measuring device (15) of detection grinding attachment (10) Line is measured;Measure before on-line measurement is divided into planar conjugate cam (100) grinding and during grinding terminates rear and grinding work;Flat Terminate rear state with grinding before face conjugate cam (100) grinding, make planar conjugate cam (100) 1 week be rotated with each θiAngle " intermittent rotary " motion is done respectively, in each intermittent rotary cycle, first laser measurement head (15-1) and second laser measurement head (15-2) also can do faster reciprocal motion on the axial profile line of planar conjugate cam (100) simultaneously respectively to measure; On-line measurement in planar conjugate cam (100) grinding, makes planar conjugate cam (100) rotate 1 week with each θiAngle is respectively done Slow continuous rotary motion, first laser measurement head (15-1) is with second laser measurement head (15-2) respectively in planar conjugate cam (100) do faster reciprocal motion on axial internal and external contour line to measure;The rotary speed of planar conjugate cam (100) is 1 Turn/60 points to 1 turn/20 points;First laser measurement head (15-1) and the linear reciprocating motion of second laser measurement head (15-2) Speed is 3000 millis m/min to 10000 millis m/min;First laser measurement head (15-1) and second laser measurement head (15-2) Initial position is in the respective linear motor stator electric x of X-direction1Place, and first laser measurement head (15-1) is surveyed with second laser Amount head (15-2) is before and after same edge on the vertical guide for arranging;Drive is moved along X-axis Y-axis by table mechanism (12) convex Wheel rotating mechanism (13) makes planar conjugate cam (100) to be processed into measurement position lui>Ls, lvi=x1And lvi<x2Carry out Measurement;
2., go out the foreign steamer of planar conjugate cam (100) according to the inside and outside contour Size calculation of the planar conjugate cam (100) for measuring Wide polar coordinate radial dimension and Internal periphery polar coordinate radial dimension the outer Internal periphery with planar conjugate cam (100) to be processed Polar coordinate radial dimension is compared, and draws mismachining tolerance and allowance;Then by planar conjugate cam (100) outline pole The processing zero point that coordinate radial dimension maximum is ground as planar conjugate cam (100);Then pass through workbench (12-4) band Dynamic planar conjugate cam (100) makes outline shift to emery wheel grinding-head (14-4) place, completes planar conjugate cam (100) processing zero point It is automatically positioned;And the processing amount of feeding of corase grind planar conjugate cam (100) outline is automatically determined according to measurement data;
3. the processing amount of feeding for, 2. being determined according to step is convex to planar conjugate by the grinding mechanism (14) for detecting grinding attachment (10) The outline of wheel (100) carries out corase grind grinding, while being filled by the cam Internal periphery on-line checking of on-line measuring device (15) Put (15b) to measure the Internal periphery of planar conjugate cam (100);
4., complete planar conjugate cam (100) outline carry out corase grind grinding after, return to processing zero point, by detection mill The grinding mechanism (14) of turning device (10) carries out corase grind grinding to the Internal periphery of planar conjugate cam (100), at the same by Cam outline on-line measuring device (15a) of line detector (15) is surveyed to the outline of planar conjugate cam (100) Amount;The processing amount of feeding of next step finished plane conjugate cam (100) outline is calculated according to the data of measurement;
After the corase grind grinding of the Internal periphery for 5., completing planar conjugate cam (100), processing zero point is returned to, according to step 4. In finished plane conjugate cam (100) outline the processing amount of feeding it is right by the grinding mechanism (14) for detecting grinding attachment (10) The outline of planar conjugate cam (100) carries out fine grinding grinding, while by the cam Internal periphery of on-line measuring device (15) On-line measuring device (15b) is measured to the Internal periphery of planar conjugate cam (100);Calculated according to the data of measurement next The processing amount of feeding of step finished plane conjugate cam (100) Internal periphery;
After the fine grinding grinding of the outline for 6., completing planar conjugate cam (100), processing zero point is returned to, according to step 5. In the processing amount of feeding of finished plane conjugate cam (100) Internal periphery to carry out planar conjugate using the 4. described method of step convex The measurement of planar conjugate cam (100) outer profile size is carried out while wheel (100) Internal periphery fine ginding;
After the fine grinding grinding of the Internal periphery for 7., completing planar conjugate cam (100), by the cam of on-line measuring device (15) Internal periphery on-line measuring device (15b) is measured to the Internal periphery of planar conjugate cam (100) and to calculate planar conjugate convex Wheel (100) Internal periphery polar coordinate radial dimension;According to step 6. in the outline data meter of planar conjugate cam (100) that measures Calculate outline polar coordinate radial dimension;By above-mentioned planar conjugate cam (100) outward, Internal periphery polar coordinate radial dimension with will plus The planar conjugate cam (100) of work outward, Internal periphery polar coordinate radial dimension be compared, draw planar conjugate cam (100) outward, Internal periphery polar coordinate radial dimension mismachining tolerance judges whether processing planar conjugate cam (100) is qualified, mends if necessary to repair Repay and can repeat automatically above-mentioned corresponding steps further grinding is carried out to planar conjugate cam (100) profile.
2. profile of planar conjugate cam according to claim 1 detects the control method with abrasive machining device, its feature It is:The step 1. in first laser measurement head (15-1) and second laser measurement head (15-2) in planar conjugate cam (100) time for measuring on axial profile line once is 0.12 second to 2 seconds.
CN201510130349.1A 2013-02-07 2013-02-07 Plane conjugate cam profile detection and grinding machining device control method CN104742016B (en)

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CN201310048860.8A CN103144034B (en) 2013-02-07 2013-02-07 Control method for planar conjugate cam contour detecting and grinding device

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CN105014503A (en) * 2015-05-19 2015-11-04 上海交通大学 Precise grinding method for large-caliber axisymmetric aspheric surfaces
CN105479338A (en) * 2015-11-25 2016-04-13 瓦房店轴承集团有限责任公司 Automatic on-line detection method for dual measurement of numerical control grinder
CN107234490A (en) * 2016-03-28 2017-10-10 沈阳海默数控机床有限公司 A kind of control device of method for grinding and groove mill
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