CN101696872A - Total run-out comprehensive measuring instrument - Google Patents
Total run-out comprehensive measuring instrument Download PDFInfo
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- CN101696872A CN101696872A CN200910197779A CN200910197779A CN101696872A CN 101696872 A CN101696872 A CN 101696872A CN 200910197779 A CN200910197779 A CN 200910197779A CN 200910197779 A CN200910197779 A CN 200910197779A CN 101696872 A CN101696872 A CN 101696872A
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Abstract
The invention relates to a total run-out comprehensive measuring instrument, comprising a base part, a head frame part, a measuring slide plate mechanism, a measuring device, an axial measuring position changing mechanism, a radial measuring position changing mechanism, a control circuit and a computer. The right and the left ends on a base are respectively provided with the head frame part and a right tip device; the measuring slide plate mechanism capable of transversely moving is mounted on the middle of the base; a measuring slide plate transmission mechanism is mounted between the measuring slide plate mechanism and the base part; a measuring device is mounted on the measuring slide plate mechanism; the axial and radial measuring position changing mechanism is arranged on the measuring device; the sensing signal output terminal of the measuring device is sequentially connected with the control circuit, the computer and a stepping motor driving circuit; and the output terminal of the stepping motor driving circuit is connected with a head frame driving motor and a slide plate driving motor. The total run-out comprehensive measuring instrument combines mechanical control, data collection and data processing into a whole, and realizes automatic data collection and processing of shaft parts through computer control automation, thereby having convenient operation and control and higher energy efficiency ratio.
Description
Technical field
The present invention relates to a kind of axial workpiece tolerance measurement instrument, specifically a kind of robotization comprehensive detector that is used for tolerance projects such as linearity, circularity, Circular Run-out Tolerance, radial run-out, end surface full jumping, axial total run-out.
Background technology
Because the shortcoming of total run-out tolerance checkout equipment, the deviser seldom marks total run-out tolerance project on product design document.And the total run-out error of axial workpiece has direct influence to performances such as the operating accuracy of machine, life-spans, to the machine and the precision optical machinery instrument of working under the conditions such as high temperature, heavy duty, influence then more very processes part precision as the direct influence of beating of high precision numerical control lathe spindle.In view of this, designed a total run-out comprehensive measuring instrument, adopted the revolution of step motor drive axial workpiece, linear movement pick-up is finished data sampling, computer control testing process and processing real time data.Collapsible measuring head can be finished the measurement function of projects such as circularity, axis verticality, radial run-out, axially total run-out, Circular Run-out Tolerance, end surface full jumping, realize the collection of the measurement data of some points in the week, caused error when having avoided twice installation to clamp tested part is estimated thereby can make accurately part.
Summary of the invention
The present invention is the shortcoming problem that will solve total run-out tolerance checkout equipment, and a kind of total run-out comprehensive measuring instrument is provided.
The object of the present invention is achieved like this: a kind of total run-out comprehensive measuring instrument, comprise base member, headstock parts, measure sled mechanism, measurement mechanism, axially, radial measurement evolution mechanism, control circuit, computing machine, be characterized in: a left side above the base, right two ends are separately installed with headstock parts and top by the right side, latch mechanism, the right Finial device that right dead head and handwheel constitute, the measurement sled mechanism that laterally moves is installed above the centre, measure to be equipped with between sled mechanism and the base member and measure the slide plate gear train, above measuring sled mechanism measurement mechanism is installed, be provided with above the measurement mechanism axially, radial measurement evolution mechanism, the sensor signal output terminal of measurement mechanism connects control circuit successively, computing machine, stepper motor driving circuit, stepper motor driving circuit output terminal connect headstock drive motor and slide plate drive motor respectively.
Headstock parts comprise threephase asynchronous, the twin-stage speed adjusting gear, a left side is top, shifting slide gear dead man, clip, pneumatic type centering chuck, wherein, it is top that pneumatic type centering chuck front end is provided with a left side, is connected with the twin-stage speed adjusting gear on the rotation axis of rear end, shifting slide gear in the twin-stage speed adjusting gear is connected with the shifting slide gear dead man, and the input shaft of twin-stage speed adjusting gear is connected with the threephase asynchronous output shaft.
Base member comprises three-phase synchronous motor, the gearbox gear gear train, leading screw, wherein, the leading screw rear end connects the gearbox gear gear train, the transmission nut of front end below the measurement slide plate is connected, and the input shaft of gearbox gear gear train is connected with the three-phase synchronous motor output shaft.
Measuring mechanism comprises column, slip blade, sensing station adjusting lever, friction pulley, knob, locating sleeve, adjust knob, briquetting, wherein, column is fixedly connected on the slip blade, its adjustable connection locating sleeve in upper end, adjustable connection sensing station adjusting lever in the locating sleeve right-hand member, friction connects friction pulley in the groove above the sensing station adjusting lever, friction pulley is connected with knob, is provided with briquetting between locating sleeve and the column, and briquetting is connected with the adjustment knob.
Axially, radial measurement evolution mechanism comprises the flute profile cylindrical bar, screw thread column, spring iron clamp, jam nut, wherein, the front end of flute profile cylindrical bar is screwed into a screw thread column with screw, and clamping one is with the spring iron clamp of circular hole and is screwed with jam nut on the screw thread column.
The invention has the beneficial effects as follows: it is one that the present invention collects mechanical control, data acquisition, data processing.The gyration of tested part and the rectilinear motion of measuring mechanism are controlled by the gear train assembly reduction gear by a phase asynchronous fractional electric motor, three synchronised fractional electric motors respectively, and can provide high and low double speed running respectively according to the size of measured piece.Be the running speed that whole drive system has four kinds of couplings, computer controlled automation is realized automatic data acquisition, the processing of axial workpiece.Be convenient to operation control, have higher Energy Efficiency Ratio.
Be used for the accessory size scope and be the automatic measurement of many tolerances project of the axial workpiece of Φ 300～Φ 800mm, reference significance is arranged for the design of the tolerance computer aided measurement of large scale axial workpiece.Greatly improve the automatization level of axial workpiece total run-out tolerance measurement, reduced the error that human factor causes, reduced testing staff's labour intensity, improved production efficiency of products.
Description of drawings
Fig. 1 is structure of the present utility model and fundamental diagram;
Fig. 2 is the measurement mechanism structural representation;
Fig. 3 is axial, radial measurement evolution mechanism structure synoptic diagram;
Fig. 4 is along the cut-open view of A-A among the figure;
Fig. 5 is circuit theory diagrams of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment
As shown in Figure 1, total run-out comprehensive measuring of the present invention, comprise base member, headstock parts, measure sled mechanism, measurement mechanism, axially, radial measurement evolution mechanism, control circuit, computing machine.
A left side above the base 11, right two ends are separately installed with headstock parts and by the right side top 7, latch mechanism 8, the right Finial device that right dead head 9 and handwheel 10 constitute, the measurement sled mechanism 6 that laterally moves is installed above the centre, measure to be equipped with between sled mechanism 6 and the base member and measure the slide plate gear train, above measuring sled mechanism 6 measurement mechanism 15 is installed, be provided with above the measurement mechanism 15 axially, radial measurement evolution mechanism, the sensor signal output terminal of measurement mechanism 15 connects control circuit successively, computing machine, stepper motor driving circuit, stepper motor driving circuit output terminal connect headstock drive motor and slide plate drive motor respectively.
Whole measuring mechanism transverse and longitudinal moves, and top and clamping device drives measured piece (axial workpiece) gyration, detects the total run-out error amount in the length range of axle.
Headstock parts comprise threephase asynchronous 1, twin-stage speed adjusting gear 2, a left side is top 4, shifting slide gear dead man 3, clip 5, pneumatic type centering chuck, wherein, it is top 4 that pneumatic type centering chuck front end is provided with a left side, is connected with twin-stage speed adjusting gear 2 on the rotation axis of rear end, shifting slide gear in the twin-stage speed adjusting gear 2 is connected with shifting slide gear dead man 3, and the input shaft of twin-stage speed adjusting gear 2 is connected with threephase asynchronous 1 output shaft.
Headstock part can also adopt a synchronous slow-speed motor, and gear drive is finished the double speed conversion by hyperphoric mechanism (shifting slide gear moves) on splined shaft, realize the high speed 30r/min of measured piece, the gyration of low speed 15r/min two step velocitys.It is to guarantee that this instrument has the key structure of higher rotating accuracy that high precision Double Tops apical branch holds.Axial workpiece is with its center pit location, and disk cover parts is with the center pit location on the measurement mandrel that matches with part.A left side top 4 is a stationary center, and right top 7 is that extension type is top.Select pneumatic type centering chuck for use.Total run-out comprehensive measuring instrument on-line detecting system principle as shown in Figure 1, when measured axis rotates, its radial error and axial error produce axle and move, on x, y both direction the size of amount of movement be the axle radially, the axial runout amount, by displacement transducer workpiece is detected, displacement signal is become electric signal, after amplifying, send into computing machine and finish data processing and demonstration in real time by the A/D change-over panel.
Base member comprises three-phase synchronous motor 12, gearbox gear gear train 16, leading screw 13, wherein, leading screw 13 rear ends connect gearbox gear gear train 16, the transmission nut of front end below the measurement slide plate is connected, and the input shaft of gearbox gear gear train 16 is connected with three-phase synchronous motor 12 output shafts.
Base member adopts one three synchronised fractional electric motor 12, utilizes shifting slide gear to finish the double speed conversion in the gearbox gear gear train of measuring mechanism, realizes that leading screw drives the high speed of measuring mechanism, the rectilinear motion of low speed two step velocitys.
In general structure, utilize the computer control motor, drive the transmission of measured piece, utilize inductance displacement sensor to replace indicating gauge, to tolerance project continuous sampling in the motion, and, carry out data processing through sending into computing machine after the A/D conversion by the electric signal amplification of metering circuit to sensor 31 outputs. when measured piece rotated a week, computing machine showed measurement result and graph of errors in real time.
Adopt pneumatic type centering chuck to position to measured workpiece, do the low speed gyration under motor-driven, the tolerance project of Jian Ceing is adjusted collapsible measuring head sensor contact position as requested.Measuring head is horizontal along the x axle at the uniform velocity mobile, can measure radially total run-out; Measuring head rotates to an angle from the plumb position when vertical with face of cylinder bus, and measurement axis is to total run-out; The measuring head that is horizontal is simultaneously at the uniform velocity mobile along the y axle, can measure end surface full jumping.
Adjust measurement mechanism measuring head is entered in the linearity measuring range, by the motor-driven of headstock, measured piece is done the dead axle gyration, but the morpheme error of beating of the circle on each little section on the measuring head measurement axis; If this moment, measuring head was done axial linear movement by the axial force of screw mandrel transmission, can also measure radially total run-out of measured piece in linearity measuring range; If measure the Circular Run-out Tolerance of measured piece, at this moment only need be the bending of side head, vertically move measuring mechanism and measure to the section that will measure and get final product, the reason that Here it is this mechanism can multifunctional measuring.
As shown in Figure 2, measurement mechanism comprises column 28, slip blade 21, sensing station adjusting lever 22, friction pulley 23, knob 24, support arm locating sleeve 25, adjust knob 26, briquetting 27, wherein, column 28 is fixedly connected on the slip blade 21, its adjustable connection support arm locating sleeve 25 in upper end, adjustable connection sensing station adjusting lever 22 in support arm locating sleeve 25 right-hand members, friction connects friction pulley 23 in the groove above the sensing station adjusting lever 22, and friction pulley 23 is connected with knob 24, be provided with briquetting 27 between support arm locating sleeve 25 and the column 28, briquetting 27 is connected with adjustment knob 26.
As Fig. 3, shown in 4, axially, radial measurement evolution mechanism comprises flute profile cylindrical bar 33, screw thread column 34, spring iron clamp 32, jam nut 30, wherein, the front end of flute profile cylindrical bar 33 is screwed into a screw thread column 34 with screw, and clamping one is with the spring iron clamp 32 of circular hole and is screwed with jam nut 30 on the screw thread column 34.
Realize the automatic measurement of axial total run-out, the semi-automatic evolution of measuring of total run-out radially by the position of regulating spring iron clamp 32.When measuring end surface full jumping and related item, can realize gauge head moving radially on end face by the friction pulley on the uniform rotation measuring mechanism.
The precision of displacement transducer 31 and stability is the precision and the stability of decision whole measuring system directly.This detector is to be that 3～6 grades, diameter are that the workpiece of Φ 10～Φ 300mm designs for measuring the run-out tolerance grade, and the runout error of permission is 0.02～0.15 μ m.Consider when measuring that workpiece and sensor do respectively evenly to slowly run and slides, vibrate gentlyer that according to the rule of sensor selection, the selection dynamic resolution is the sensor of 0.13～0.15 μ m.
Adopt the contact linear movement pick-up, promptly the amount head directly contacts with the measured surface of measured piece, and the variation of measured parameter directly is reflected on the amount of movement of gauge rod, is converted to electric weight by certain sensor then.As adopting MCW-D molded lines displacement transducer the key technical indexes, its principal character parameter sees Table 1.
Table 1 displacement transducer technology parameter
Guide rail on the base 11 is a dovetail slideway, and higher level gauge of flatness and the higher side rails of linearity are arranged on the high precision base rail base 11, and side rails has the high-precision depth of parallelism to two top axiss of rotation.Basic demand to guide rail is: 1. guiding accuracy height for line slideway, promptly requires linearity good; 2. it is light, steady to move, no creeping phenomenon; 3. enough load-bearing capacitys are arranged; 4. reliable and stable, installation, easy to use.The important technological parameters guide precision is 10 μ m/100mm.
Running part is made up of to be fit to be applied to the requirement of precision positioning and precision measurement the high precision ball leading screw.Running part is equipped with lead limit switch, can prevent that motion is unexpected out of control and damage complete machine, make measure safer reliable.
As shown in Figure 5, adopting with the computing machine is control control core system, bears the functions such as the browsing of real-time control, data acquisition, data processing, testing result, storage and printing test of measuring process.In order to realize these functions, computer system is made up of hardware such as main frame, interface board, keyboard, USB interface, printers.Main frame adopts DELL computing machine, interface that MS 〉=1213 types A/D 〉=D/A change-over panel, expansion board etc. are arranged.The high-accuracy data acquisition system is provided with wave filter, amplifies linearity compensator etc., makes that the technical indicator of total system is better.In order to improve the function of computer system, to form on the basis at basic hardware, design and assembling auxiliary working apparatus as photoelectric encoder etc., guarantee the correct reliability service of microsystem.
Primary control program provides an integrated test environment and main test interface, can select the function of test event and project testing, also has functions such as system management, knowledge base management simultaneously.User interface adopts test event to select window, test window and help window, need to determine the tolerance project of mensuration earlier, enter in the corresponding process of measurement according to the tolerance project, data collecting card is gathered the conversion with A/D to the data of displacement transducer then, and computing machine is controlled motor and travel switch in real time according to the data of reading in.The all helpful and operation indicating of whole test process.
Computer software comprises: the software functions such as drafting of the real-time screen display of data acquisition, data processing, test signal, frequency analysis, data output and detection curve.Consider the closely real-time of information, adopt outer interrupt mode collection.
Comprise the stochastic error of hardware introducing itself and the error amount that workpiece surface roughness causes in the dynamic measuring data, comprise interference noise through A/D conversion gained data, requirement must be carried out data processing to sampled data, and filtering noise in addition is especially to the measurement of precision workpiece.
Because the cutoff frequency of lowpass digital filter is lower than the analog filter, low-pass digital filter is effectively to the interference that filtering changes utmost point measured signal slowly.The runout error on finishing workpiece surface obtains tempolabile signal after the sensor conversion, the stochastic error amount that comprises in the measurement data generally belongs to radio-frequency component, and the method for available low-pass filtering is removed effectively.In order to improve measuring reliability and precision, utilize the dirigibility of software algorithm, so select low-pass digital filter.
Claims (5)
1. total run-out comprehensive measuring instrument, comprise base member, headstock parts, measure sled mechanism, measurement mechanism, axially, radial measurement evolution mechanism, control circuit, computing machine, it is characterized in that: a left side above the base of described base member (11), right two ends are separately installed with headstock parts and by the right side top (7), latch mechanism (8), the right Finial device that right dead head (9) and handwheel (10) constitute, the measurement sled mechanism (6) that laterally moves is installed above the centre, measure to be equipped with between sled mechanism (6) and the base member and measure the slide plate gear train, above measuring sled mechanism (6) measurement mechanism (15) is installed, be provided with above the measurement mechanism (15) axially, radial measurement evolution mechanism, the sensor signal output terminal of measurement mechanism (15) connects control circuit successively, computing machine, stepper motor driving circuit, stepper motor driving circuit output terminal connect headstock drive motor and slide plate drive motor respectively.
2. total run-out comprehensive measuring instrument according to claim 1, it is characterized in that: described headstock parts comprise threephase asynchronous (1), twin-stage speed adjusting gear (2), a left side top (4), shifting slide gear dead man (3), clip (5), pneumatic type centering chuck, wherein, pneumatic type centering chuck front end is provided with a left side top (4), be connected with twin-stage speed adjusting gear (2) on the rotation axis of rear end, the shifting slide gear in the twin-stage speed adjusting gear (2) is connected with shifting slide gear dead man (3), and the input shaft of twin-stage speed adjusting gear (2) is connected with threephase asynchronous (1) output shaft.
3. total run-out comprehensive measuring instrument according to claim 1, it is characterized in that: described base member comprises three-phase synchronous motor (12), gearbox gear gear train (16), leading screw (13), wherein, leading screw (13) rear end connects gearbox gear gear train (16), and the transmission nut of front end below the measurement slide plate is connected, and the input shaft of gearbox gear gear train (16) is connected with three-phase synchronous motor (12) output shaft.
4. total run-out comprehensive measuring instrument according to claim 1, it is characterized in that: described measurement mechanism comprises column (28), slip blade (21), sensing station adjusting lever (22), friction pulley (23), knob (24), support arm locating sleeve (25), adjust knob (26), briquetting (27), wherein, column (28) is fixedly connected on the slip blade (21), its upper end adjustable connection support arm locating sleeve (25), friction connects friction pulley (23) in the groove above the adjustable connection sensing station adjusting lever (22) in support arm locating sleeve (25) right-hand member, sensing station adjusting lever (22), and friction pulley (23) is connected with knob (24), be provided with briquetting (27) between support arm locating sleeve (25) and the column (28), briquetting (27) is connected with adjustment knob (26).
5. total run-out comprehensive measuring instrument according to claim 1, it is characterized in that: described axially, radial measurement evolution mechanism comprises flute profile cylindrical bar (33), screw thread column (34), spring iron clamp (32), jam nut (30), wherein, the front end of flute profile cylindrical bar (33) is screwed into a screw thread column (34) with screw, and screw thread column (34) is gone up the spring iron clamp (32) of clamping one band circular hole and is screwed with jam nut (30).
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| CN200910197779XA CN101696872B (en) | 2009-10-28 | 2009-10-28 | Total run-out comprehensive measuring instrument |
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