CN105571524A - Transmission shaft angle measurement apparatus based on circular grating - Google Patents

Transmission shaft angle measurement apparatus based on circular grating Download PDF

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Publication number
CN105571524A
CN105571524A CN201510943259.4A CN201510943259A CN105571524A CN 105571524 A CN105571524 A CN 105571524A CN 201510943259 A CN201510943259 A CN 201510943259A CN 105571524 A CN105571524 A CN 105571524A
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CN
China
Prior art keywords
transmission shaft
screw
circular gratings
plate
driving
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Granted
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CN201510943259.4A
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Chinese (zh)
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CN105571524B (en
Inventor
朱永晓
陈伟
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Guizhou Aerospace Institute of Measuring and Testing Technology
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Guizhou Aerospace Institute of Measuring and Testing Technology
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Priority to CN201510943259.4A priority Critical patent/CN105571524B/en
Publication of CN105571524A publication Critical patent/CN105571524A/en
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Publication of CN105571524B publication Critical patent/CN105571524B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/26Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes

Abstract

The invention discloses a transmission shaft angle measurement apparatus based on a circular grating. The apparatus comprises the circular grating and a connecting shaft. The circular grating is provided with a grating ring and reading heads, the grating ring is fixedly connected with one end of the connecting shaft, the reading heads are fixedly connected with a bearing pedestal, the bearing pedestal is connected with the other end of the connecting shaft through a high-precision bearing, the connecting shaft is connected with a measured transmission shaft, the bearing pedestal is fixedly connected with a support platform. According to the invention, under the working condition that the transmission shaft bears large torque and a high rotating speed, the change condition of an angle of the measured transmission shaft in a test process can be really monitored, a correlation test system can be dynamically calibrated in real time, the accuracy of test correlation parameters is ensured, and the apparatus provided by the invention also has the advantages of convenient mounting and dismounting operation and application and simple structure.

Description

A kind of transmission shaft angle-measuring equipment based on Circular gratings
Technical field
The invention belongs to transmission shaft proving installation technical field, relate to a kind of transmission shaft angle-measuring equipment based on Circular gratings.
Background technology
In recent years, along with the development of missile weapon system, various new steering wheel is developed successively and is criticized product, and various test parameter, test event require more and more comprehensive, and test accuracy requires more and more higher.For the situation of change of steering wheel angle in control and measuring process truly, need to take real-time dynamic calibration to associated test system, and correcting device need bear high pulling torque, high-revolving operating mode, require comparatively harsh.For meeting the needs of model steering wheel production and guaranteed reliability, build transmission shaft angle-measuring equipment, guarantee steering wheel experimental test data accurately and reliably, effective guarantee Product scientific researching is produced and life cycle management reliability, has extremely important and urgent realistic meaning.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of transmission shaft angle-measuring equipment based on Circular gratings, can at drive bearing by under high pulling torque, high-revolving working condition, the situation of change of tested transmission shaft angle in control and measuring process truly, real-time dynamic calibration is carried out to associated test system, guarantee the accuracy testing correlation parameter, to solve prior art Problems existing.
The technical scheme that the present invention takes is: a kind of transmission shaft angle-measuring equipment based on Circular gratings, comprise Circular gratings and coupling shaft, described Circular gratings has grating ring and read head, described grating ring is fixedly connected on coupling shaft one end, described read head is fixedly connected on bearing seat, described bearing seat is connected to the coupling shaft other end by high-accuracy bearing, and described coupling shaft is connected on tested transmission shaft, and described bearing seat is fixedly connected in support platform.
Preferably, above-mentioned read head adopts two relative coupling shaft axial line symmetries to install, symmetrical installation, and income value on average realizes mutually compensating afterwards, can improve measuring accuracy.
Preferably, above-mentioned read head is wired to capture card, and described capture card is connected to computing machine, and described capture card connects read head by data processor, by the digital independent of read head on computing machine, drive axis angle can be monitored by capture card simple and clearly.
Preferably, above-mentioned bearing seat sets the T-slot for being fixedly connected with read head, described T-slot center is vertical with the shaft centre line that is rotatably connected, and is fixed installation read head by T-slot, fast easy to loading and unloading, and it is firm to connect, registration, and test error is little.
Preferably, above-mentioned high-accuracy bearing adopts SKF precise rolling bearing, and model is 6019-2Z, adopts interference fit with bearing saddle bore, adopts high-accuracy SKF bearing, greatly can improve the transmission accuracy of transmission shaft, improves the reliability of test result.
Preferably, above-mentioned coupling shaft center adopts square hole to be connected with tested transmission shaft, and square hole connects can improve the intensity and rigidity that are rotationally connected place, thus improves measuring accuracy.
Preferably, be fixedly mounted in support platform by two front and back symmetrical screws on the downside of above-mentioned bearing seat, bearing seat can be adjusted to proper height by screw rod, play the effect supporting angle-measuring equipment, and prevent bearing seat with drive axis, ensure that the relative position of double-reading head is fixed.
Preferably, above-mentioned support platform is adjustable platform, comprise vertical adjustment mechanism, front-and-back adjusting mechanism and left and right aligning elevation gear, two folding machines that described vertical adjustment mechanism comprises symmetrical placement and the vertical driving mechanism driving folding stand to move up and down, described front-and-back adjusting mechanism is fixedly mounted on folding stand, comprise substrate, slide plate and the front and back driving mechanism driving slide plate movable, described left and right aligning elevation gear is arranged on slide plate movably, comprise the pitching driving mechanism of pitching plate and the pitching of driving pitching plate, pass through vertical adjustment mechanism, front-and-back adjusting mechanism and left and right aligning elevation gear realize the position accurate adjustment of bearing seat, realize the right alignment of bearing seat, the adjustment of verticality and circularity, guarantee position deviation is little, position alignment error is avoided to bring measuring accuracy not high, and rub and excessively cause bearing wear excessive, thus grating installation site is inaccurate.
Preferably, above-mentioned vertical driving mechanism comprises screw-nut pair, left slider and right slide block, described screw-nut pair comprises leading screw, the left screw contrary with the rotation direction that leading screw is socketed and right screw, described leading screw left end can be arranged on fixed strip with rotating about the axis, the left handing-over pin place, middle part that described fixed strip front and back end is connected to left folding superimposed, shown left screw is fixedly mounted on left slider, the right handing-over pin place, middle part that described left slider front and back end is connected to left folding superimposed, described right screw is fixedly mounted on right slide block, the left handing-over pin place, middle part that described right slide block front and back end is connected to right folding superimposed, described left slider and right slide block are connected with slide bar, described slide bar left end is fixedly connected on fixed strip, folding stand is driven to move up and down by screw-nut pair, fast easy to adjust, position is accurate.
Preferably, above-mentioned front and back driving mechanism comprises holder and adjustment screw, described holder lower end side is fixedly connected on substrate leading flank, upper end is provided with adjustment screw, and described adjustment screw one end connects slide plate, screws adjustment screw and can promote slide plate and move forward and backward, screwed by adjustment screw and realize the movable of slide plate, screw adopts fine thread, greatly can improve Adjustment precision, realizes fine setting.
Preferably, above-mentioned left and right pitching driving mechanism comprises adjustment plate and steel ball, described adjustment plate lower end is provided with threaded rod, upper end is resisted against pitching plate left bottom by rationed marketing, described threaded rod is connected on slide plate, described steel ball is arranged on the right side between pitching plate and slide plate, each one of front and back, on the left of steel ball, extension spring is being provided with between described pitching plate and slide plate, the left and right pitching realizing pitching plate is rotated by adjustment plate, thus ensure right alignment and the verticality of bearing seat, fast easy to adjust.
When the present invention carries out measurement of angle to transmission shaft, can be used for the static state of tested transmission shaft, dynamic angle measurement, also can carry out the detection of angle-position precision, angle speed precision and frequency band to transmission shaft.
Beneficial effect of the present invention: compared with prior art, the present invention can work under horizontal operation state, the angle of real-time measurement transmission shaft, angular velocity, angular acceleration, maximumly turn angular velocity, maximumly turn angular acceleration, can at drive bearing by under high pulling torque, high-revolving working condition, the situation of change of tested transmission shaft angle in control and measuring process truly, real-time dynamic calibration is carried out to associated test system, guarantee to test the accuracy of correlation parameter, the present invention also has that assembly and disassembly operations is easy to use, the simple feature of structure.
Accompanying drawing explanation
Fig. 1 is front view of the present invention;
Fig. 2 is that cut-open view is looked on the right side of the present invention;
Fig. 3 of the present inventionly overlooks sectional structure schematic diagram;
Fig. 4 is the structural representation of support platform of the present invention;
Fig. 5 is that schematic diagram is looked on a left side of Fig. 4;
Fig. 6 is the plan structure schematic diagram of the pitching plate of Fig. 4;
Fig. 7 is vertical driving mechanism structural representation of the present invention.
In figure, 1-Circular gratings, 2-coupling shaft, 3-bearing seat, the high-accuracy bearing of 4-, the tested transmission shaft of 5-, 6-T type groove, 7-square hole, 8-screw rod, 101-grating ring, 102-read head, 9-support platform, 10-folding stand, 11-vertical driving mechanism, 12-substrate, 13-slide plate, driving mechanism before and after 14-, 15-pitching plate, 16-pitching driving mechanism, 17-screw-nut is secondary, 18-left slider, the right slide block of 19-, 20-leading screw, the left screw of 21-, the right screw of 22-, 23-fixed strip, 24-slide bar, 25-holder, 26-adjusts screw, 27-adjustment plate, 28-steel ball, 29-threaded rod, 30-extension spring, 31-handle, 32-strip groove, 33-ball recess.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, invention is described further.
As shown in Fig. 1 ~ Fig. 7, a kind of transmission shaft angle-measuring equipment based on Circular gratings, comprise Circular gratings 1 and coupling shaft 2, described Circular gratings 1 has grating ring 101 and read head 102, described grating ring 101 is fixedly connected on coupling shaft 2 one end, described read head 102 is fixedly connected on bearing seat 3, described bearing seat 3 is connected to coupling shaft 2 other end by high-accuracy bearing 4, described coupling shaft 2 is connected on tested transmission shaft 5, described bearing seat 3 is fixedly connected in support platform 9, Circular gratings relies on circular journal bearing to be fixed location, bearing realizes pretension when mounted and eliminates play, effectively improve the rotating accuracy of axle system, and it is convenient for installation and maintenance, during DATA REASONING, location is accurately quick.
Preferably, above-mentioned read head 102 adopts two relative coupling shaft 2 axial line symmetries to install, symmetrical installation, and income value on average realizes mutually compensating afterwards, can improve measuring accuracy.
Preferably, above-mentioned read head 102 is wired to capture card, and described capture card is connected to computing machine, and described capture card connects read head 102 by data processor, by the digital independent of read head on computing machine, drive axis angle can be monitored by capture card simple and clearly.
Preferably, above-mentioned bearing seat 3 sets the T-slot 6 for being fixedly connected with read head 102, described T-slot 6 center and axle 2 central axis that is rotatably connected, be fixed installation read head by T-slot, fast easy to loading and unloading, it is firm to connect, registration, test error is little.
Preferably, above-mentioned high-accuracy bearing 4 adopts SKF precise rolling bearing, and model is 6019-2Z, adopts interference fit with bearing saddle bore, adopts high-accuracy SKF bearing, greatly can improve the transmission accuracy of transmission shaft, improves the reliability of test result.
Preferably, above-mentioned coupling shaft 2 center adopts square hole 7 to be connected with tested transmission shaft 5, and square hole connects can improve the intensity and rigidity that are rotationally connected place, thus improves measuring accuracy.
Preferably, be fixedly mounted in support platform 9 by two front and back symmetrical screws 8 on the downside of above-mentioned bearing seat, bearing seat can be adjusted to proper height by screw rod, play the effect supporting angle-measuring equipment, and prevent bearing seat with drive axis, ensure that the relative position of double-reading head is fixed.
Preferably, above-mentioned support platform 9 is adjustable platform, comprise vertical adjustment mechanism, front-and-back adjusting mechanism and left and right aligning elevation gear, two folding machines 10 that described vertical adjustment mechanism comprises symmetrical placement and the vertical driving mechanism 11 driving folding stand 10 to move up and down, described front-and-back adjusting mechanism is fixedly mounted on folding stand 10, comprise substrate 12, slide plate 13 and the front and back driving mechanism 14 driving slide plate 13 movable, described left and right aligning elevation gear is arranged on slide plate 13 movably, comprise the pitching driving mechanism 16 of pitching plate 15 and the pitching of driving pitching plate 15, pass through vertical adjustment mechanism, front-and-back adjusting mechanism and left and right aligning elevation gear realize the position accurate adjustment of bearing seat, realize the right alignment of bearing seat, the adjustment of verticality and circularity, guarantee position deviation is little, position alignment error is avoided to bring measuring accuracy not high, and rub and excessively cause bearing wear excessive, thus grating installation site is inaccurate.
Preferably, above-mentioned vertical driving mechanism 11 comprises screw-nut pair 17, left slider 18 and right slide block 19, described screw-nut pair 17 comprises leading screw 20, the left screw 21 contrary with the rotation direction that leading screw 20 is socketed and right screw 22, described leading screw 20 left end can be arranged on fixed strip 23 with rotating about the axis, described fixed strip 23 front and back end is connected to the left handing-over pin place, middle part of left folding superimposed, shown left screw 21 is fixedly mounted on left slider 18, described left slider 18 front and back end is connected to the right handing-over pin place, middle part of left folding superimposed, described right screw 21 is fixedly mounted on right slide block 18, described right slide block 18 front and back end is connected to the left handing-over pin place, middle part of right folding superimposed, described left slider 18 and right slide block 19 are connected with slide bar 24, described slide bar 24 left end is fixedly connected on fixed strip 23, folding stand is driven to move up and down by screw-nut secondary 17, fast easy to adjust, position is accurate, leading screw 20 left end is connected with handle, the rotation of leading screw can be carried out easily by handle, laborsaving, be easy to operation.
Preferably, above-mentioned front and back driving mechanism 14 comprises holder 25 and adjustment screw 26, described holder 25 lower end side is fixedly connected on substrate 12 leading flank, upper end is provided with adjustment screw 26, described adjustment screw 26 one end connects slide plate 13, screw adjustment screw 26 can promote slide plate 13 and move forward and backward, screwed by adjustment screw and realize the movable of slide plate, screw adopts fine thread, greatly can improve Adjustment precision, realize fine setting, holder 25 and adjustment screw 26 comprise two covers, on front side of slide plate, left and right is each a set of, left adjustment screw 26 is resisted against in the strip groove 32 of slide plate 13, right adjustment screw 27 directly screws and is connected on slide plate 13, two screws can be avoided during this institutional adjustment to screw, and slide plate causes crosses location simultaneously, thus ensure Adjustment precision Du Genggao.
Preferably, above-mentioned left and right pitching driving mechanism 14 comprises adjustment plate 27 and steel ball 28, described adjustment plate 27 lower end is provided with threaded rod 29, upper end is resisted against pitching plate 15 left bottom by rationed marketing, described threaded rod 29 is connected on slide plate 13, described steel ball 28 is arranged on the right side between pitching plate 15 and slide plate 13, each one of front and back, on the left of steel ball 28, extension spring 30 is being provided with between described pitching plate 15 and slide plate 13, the left and right pitching realizing pitching plate is rotated by adjustment plate, thus ensure right alignment and the verticality of bearing seat, fast easy to adjust, steel ball 28 arranges ball recess 33 with pitching plate 15 and slide plate 13 junction, facilitate steel ball to position by ball recess and support.
Circular gratings in the present invention is installed on the ring flange of main shaft, Circular gratings requires that the circle in the relative center of circle of external diameter of Circular gratings must not beat and is greater than ± 0.02mm, Circular gratings is diameter Ф 150mm, composition error ± 1 rad, adopt ring flange installation form, as contactless system, REXM Circular gratings is directly installed on the ring flange of turning axle, eliminates the mechanical hysteresis error connecting loss, distortion error and the closed grating of other influences.
The double-reading head of angle measuring system is fixedly mounted in the mechanical axis bearing of angular instrument, double-reading head each other in 180o to dress, bearing seat is processed with T-shape slot, T-shape slot center and rotary main shaft central vertical, vertical precision requirement ± 0.02mm, read head can move along T-slot direction alignment of shafts position at bearing seat, when the distance of read head and Circular gratings reach 0.8 ± 0.08mm require time, available screw lock, the advantage of this mounting means is: after one-step installation completes, can ensure there is Circular gratings and read head relative position is fixed, there is fixing alignment error, alignment error can be compensated by calibration to compensate, improve the accuracy of detection of angular instrument, thus may realize being better than ± overall installation the precision of 1 rad.
The data that double-reading head reads pass on two data-interfaces by data line, the model of data-interface is: Si-NN-0004-08-1-FN-003-003-3, two data interface directs patch on DSi data processor, DSi data processor model is: DSI-Q-M-M-16, and data processor passes to capture card by data line after being segmented by signal.
Data collecting card mainly realizes following functions:
two-way grating output signal is counted and sentences to process, calculates Circular gratings angle position output quantity and sense of rotation;
receive outer sync break signal, latch Circular gratings angle position and export, and interruption is sent to PXI bus wait monitoring device (as computing machine) process;
the machine-readable instruction fetch of response monitoring device, monitoring device is delivered to by PXI bus in the Circular gratings angle position of latch, and data acquiring frequency is not less than 10MHz.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace; all should be encompassed within protection scope of the present invention, therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims (10)

1. the transmission shaft angle-measuring equipment based on Circular gratings, it is characterized in that: comprise Circular gratings (1) and coupling shaft (2), described Circular gratings (1) has grating ring (101) and read head (102), described grating ring (101) is fixedly connected on coupling shaft (2) one end, described read head (102) is fixedly connected on bearing seat (3), described bearing seat (3) is connected to coupling shaft (2) other end by high-accuracy bearing (4), described coupling shaft (2) is connected on tested transmission shaft (5), described bearing seat (3) is fixedly connected in support platform (9).
2. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 1, is characterized in that: described read head (102) adopts two relative coupling shaft axial line symmetries to install.
3. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 2, it is characterized in that: described read head (102) is wired to capture card, described capture card is connected to computing machine, and described capture card connects read head (102) by data processor.
4. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 1, it is characterized in that: the upper setting of described bearing seat (3) is used for being fixedly connected with T-slot (6), described T-slot (6) center and the axle that is rotatably connected (2) central axis of read head (102).
5. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 1, is characterized in that: described coupling shaft (2) center adopts square hole (7) to be connected with tested transmission shaft (5).
6. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 1, is characterized in that: described bearing seat (3) downside is fixedly mounted in support platform (9) by two front and back symmetrical screw (8).
7. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 6, it is characterized in that: described support platform (9) is adjustable platform, comprise vertical adjustment mechanism, front-and-back adjusting mechanism and left and right aligning elevation gear, two folding machines (10) that described vertical adjustment mechanism comprises symmetrical placement and the vertical driving mechanism (11) driving folding stand (10) to move up and down, described front-and-back adjusting mechanism is fixedly mounted on folding stand (10), comprise substrate (12), slide plate (13) and the front and back driving mechanism (14) driving slide plate (13) movable, described left and right aligning elevation gear is arranged on slide plate (13) movably, comprise the pitching driving mechanism (16) of pitching plate (15) and driving pitching plate (15) pitching.
8. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 7, it is characterized in that: described vertical driving mechanism (11) comprises screw-nut pair (17), left slider (18) and right slide block (19), described screw-nut pair (17) comprises leading screw (20), the left screw (21) contrary with the rotation direction that leading screw (20) is socketed and right screw (22), described leading screw (20) left end can be arranged on fixed strip (23) with rotating about the axis, described fixed strip (23) front and back end is connected to the left handing-over pin place, middle part of left folding superimposed, shown left screw (21) is fixedly mounted on left slider (18), described left slider (18) front and back end is connected to the right handing-over pin place, middle part of left folding superimposed, described right screw (21) is fixedly mounted on right slide block (18), described right slide block (18) front and back end is connected to the left handing-over pin place, middle part of right folding superimposed, described left slider (18) and right slide block (19) are connected with slide bar (24), described slide bar (24) left end is fixedly connected on fixed strip (23).
9. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 7, it is characterized in that: described front and back driving mechanism (14) comprise holder (25) and adjustment screw (26), described holder (25) lower end side is fixedly connected on substrate (12) leading flank, upper end is provided with adjustment screw (26), described adjustment screw (26) one end connects slide plate (13), screws adjustment screw (26) and can promote slide plate (13) and move forward and backward.
10. a kind of transmission shaft angle-measuring equipment based on Circular gratings according to claim 7, it is characterized in that: described left and right pitching driving mechanism (14) comprises adjustment plate (27) and steel ball (28), described adjustment plate (27) lower end is provided with threaded rod (29), upper end is resisted against pitching plate (15) left bottom by rationed marketing, described threaded rod (29) is connected on slide plate (13), described steel ball (28) is arranged on the right side between pitching plate (15) and slide plate (13), each one of front and back, between described pitching plate (15) and slide plate (13), steel ball (28) left side is being provided with extension spring (30).
CN201510943259.4A 2015-12-16 2015-12-16 A kind of transmission shaft angle-measuring equipment based on Circular gratings Active CN105571524B (en)

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CN107844068A (en) * 2016-09-18 2018-03-27 北京航空航天大学 Artificial rotary table signal processing apparatus and method
CN107869969A (en) * 2017-11-06 2018-04-03 北京无线电测量研究所 A kind of integrated form angle measurement mechanism
CN109029274A (en) * 2018-08-24 2018-12-18 芜湖凯兴汽车电子有限公司 Portable type measurement unit is used in a kind of processing of plastic plate

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CN104977112A (en) * 2015-07-09 2015-10-14 长春理工大学 Precise shaft dynamic torque measuring instrument
CN205280004U (en) * 2015-12-16 2016-06-01 贵州航天计量测试技术研究所 Transmission shaft angle measurement device based on circle grating

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JPH07159116A (en) * 1993-12-09 1995-06-23 Nikon Corp Rotating angle reader
DE102006016919A1 (en) * 2006-04-08 2007-10-11 Nordmann, Klaus, Dr.-Ing. Cutting tool`s rotation error/ axial misalignment monitoring device, has sensor to measure value proportional to distance to tool and/or chuck, where alarm signal is generated to notify tolerance exceedance, errors or misalignment of tool
CN101458157A (en) * 2009-01-07 2009-06-17 西安交通大学 Dynamic performance integrated test experimental device for high speed principal axis
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107844068A (en) * 2016-09-18 2018-03-27 北京航空航天大学 Artificial rotary table signal processing apparatus and method
CN107869969A (en) * 2017-11-06 2018-04-03 北京无线电测量研究所 A kind of integrated form angle measurement mechanism
CN109029274A (en) * 2018-08-24 2018-12-18 芜湖凯兴汽车电子有限公司 Portable type measurement unit is used in a kind of processing of plastic plate

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