CN105043190B - Five-axis linkage machine tools RTCP dynamic accuracies caliberating device and its scaling method - Google Patents

Five-axis linkage machine tools RTCP dynamic accuracies caliberating device and its scaling method Download PDF

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Publication number
CN105043190B
CN105043190B CN201510237819.4A CN201510237819A CN105043190B CN 105043190 B CN105043190 B CN 105043190B CN 201510237819 A CN201510237819 A CN 201510237819A CN 105043190 B CN105043190 B CN 105043190B
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China
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axis
lathe
contact type
amesdial
rtcp
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CN201510237819.4A
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CN105043190A (en
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刘新山
文长明
裴世聪
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中工科安科技有限公司
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Abstract

The invention discloses a kind of five-axis linkage machine tools RTCP dynamic accuracies caliberating device and its scaling method.The device includes support and rack-mount face contact type amesdial one and face contact type amesdial two.The axis of two face contact type amesdials is mutually perpendicular to and in the same plane, the device meets below equation:d1=d2≤ r-3mm, wherein, d1、d2To two distances of the square crossing point of the axis of face contact type amesdial, r is the Probe-radius for demarcating instrument bulb check bar to the respectively two measurement end faces of face contact type amesdial.Layout of the present invention using two face contact type amesdials on support, the complex operations under solution procedure, the calculation error and measure geometry error, existing scaling method of conventional amesdial of sophisticated equation are avoided, efficiency, stated accuracy are demarcated so as to greatly improve.The invention also discloses the scaling method of five-axis linkage machine tools RTCP dynamic accuracy caliberating devices.

Description

Five-axis linkage machine tools RTCP dynamic accuracies caliberating device and its scaling method
Technical field
The present invention relates to a kind of five-axis linkage machine tools RTCP (Rotation Tool Center Point, five-axle linkage rotation Rotor cusp is programmed) dynamic accuracy caliberating device and its scaling method.
Background technology
With the development of China's machine tool technology, high accuracy, efficient five-axis machine tool are increasingly being applied to space flight, army The fields such as work, automobile and some civil corporations, the country also has many Machine Manufacture business to research and develop and produce five-axis machine tool.Either When Machine Manufacture negotiates the transfer of examination five-axis machine tool, or lathe user is to lathe periodic detection or when safeguarding, five-axis linkage machine tools RTCP precision be that a particularly important precision index, especially user have been even more special, strict to the RTCP precision of lathe Regular accuracy detection specification because the RTCP precision of lathe directly influence processing workpiece machining accuracy.RTCP precision is Weigh the important indicator of modern five-axis linkage machine tools dynamic accuracy.So how to improve the demarcation of RTCP, precision and efficiency of detecting It is significant.
Demarcated for five-axle linkage RTCP dynamic accuracies or detected, current domestic current method is to use mostly:In lathe Different azimuth repeatedly sets up dial gauge or amesdial, and needs repeatedly to convert the shape of amesdial in these different orientation State, then makes lathe run certain program behavior, and numerical value of obtaining a result is analyzed with reference to the difference of reading of dial gauge or amesdial Fill into system.Due to the restriction of device used in current methods, there is inevitably meter in its demarcation or detection method Error and measure geometry error are calculated, so that the data obtained is unable to the very accurate of one-shot measurement, so that the essence of affecting parameters compensation Exactness and efficiency, and commissioning staff also has to that detection, correction is repeatedly repeated, and is estimated with to trueness error, corrected.
Meanwhile, inventor notices:There are indivedual books to refer to special design device without repeatedly setting up amesdial, but Need repeatedly to move repeatedly the position of amesdial so that amesdial aligns the pole location of the ball of bulb check bar, such device is same Sample is not broken away from current methods and is limited using some of conventional amesdial.
The content of the invention
Based on drawbacks described above, the present invention provides a kind of five-axis linkage machine tools RTCP dynamic accuracies caliberating device and its demarcation side Method, carries out five-axle linkage RTCP dynamic accuracies and demarcates or detection using the present invention, and its process is very succinct, convenient, using two Layout of the face contact type amesdial in rack space, dexterously avoid the solution procedure of sophisticated equation, it is to avoid routine The calculation error and measure geometry error of amesdial;The complex operations under existing scaling method are avoided simultaneously, so as to significantly carry Demarcation efficiency high, improves stated accuracy.
Solution of the invention is:A kind of five-axis linkage machine tools RTCP dynamic accuracy caliberating devices, it includes support (3) And the face contact type amesdial one (1) on support (3) and face contact type amesdial two (2);Two face contact types thousand The axis of point table is mutually perpendicular to and in the same plane, the device meets below equation:d1=d2≤ r-3mm, wherein, d1For The measurement end face of face contact type amesdial one (1) to two distances of the square crossing point of the axis of face contact type amesdial, d2For face contact type amesdial two (2) measurement end face to two square crossing points of the axis of face contact type amesdial away from From r is the Probe-radius of the bulb check bar used by demarcation.
Used as the further improvement of such scheme, support (3) is with the installation for installing face contact type amesdial one (1) Position one (31), the installation position two (32) for installing face contact type amesdial two (2);Two installation positions are mutually perpendicular to constitute two dimension Space.
Further, support (3) includes level frame (34) and vertical rack (35), and installation position one (31) is arranged on level frame (34) on, installation position two (32) is arranged on vertical rack (35).
Preferably, level frame (34) is set to base, and the base is used to be fixed in the device workbench of lathe.
More preferably, the base is the magnet base with push button magnetic switch.
Used as the further improvement of such scheme, support (3) is provided with handle.
Used as the further improvement of such scheme, support (3) is integral type structure.
The present invention also provides the five-axis linkage machine tools of above-mentioned any five-axis linkage machine tools RTCP dynamic accuracy caliberating devices RTCP precision calibration methods, five axles include first straight line axle, second straight line axle, the 3rd linear axis, gyroaxis, swinging axle, wherein, Three linear axis are mutually perpendicular to, and gyroaxis is to be rotated centered on three two of which linear axis of linear axis respectively with swinging axle Rotary shaft;Five-axis linkage machine tools RTCP precision calibration methods are comprised the following steps:
1) device is adsorbed in the appropriate location on the workbench of lathe, and makes face contact type amesdial two (2) Axis perpendicular to the swinging axle of lathe axis of rotation, operation machine tool chief axis where servo linear axis, make the bulb on main shaft The point of intersection that the bulb centre of sphere of check bar is located substantially at two face contact type amesdial axis is position, starts lathe RTCP functions, After running 90 ° of the gyroaxis of lathe, by two face contact type amesdial reading zero setting;
2) 180 ° of operation machine tool rotary axle, reads the reading value one of face contact type amesdial two (2), the one of the reading value one Half be the axis of rotation of gyroaxis swinging axle error algebraic value one on first straight line direction of principal axis;Close lathe RTCP Function, in the relevant parameter in the regular writing system of error compensation that this error algebraic value one is pressed into related digital control system;
3) lathe RTCP functions are started, operation gyroaxis to initial position runs 90 ° of swinging axle, two faces are read respectively The reading value two of contact amesdial and reading value three, according to below equation obtain the axis of rotation of swinging axle gyroaxis institute around The ε of error algebraic value two on second straight line axle and the 3rd straight line direction of principal axisZWith the ε of error algebraic value threeY:I1Y- εZ, I2=- εYZ, wherein, I1、I2The reading of the reading value two and face contact type amesdial two (2) of face contact type amesdial one (1) is represented respectively Numerical value three;Lathe RTCP functions are closed, by εZ、εYBy the related ginseng in the error compensation rule writing system of related digital control system In number;
4) lathe RTCP functions are started, operation swinging axle to initial position runs 180 ° of gyroaxis, records face contact type thousand Divide the reading value four of table (2), the half of the reading value four is between the axis of rotation of gyroaxis and the axis of rotation of swinging axle Orthogonal distance error algebraic value four;Lathe RTCP functions are closed, the error that error algebraic value four presses related digital control system is mended In repaying the relevant parameter in regular writing system;
5) after the completion of aforementioned four step, then the RTCP precision calibrations work of lathe is completed, then comprehensive under RTCP states Close the operation axle of lathe five to link simultaneously, detect that the RTCP dynamic accuracies of lathe demarcate effect.
As the further improvement of such scheme, in step 1) in, various accuracy detections in lathe, compensation completion Afterwards, operation lathe make lathe each rotary shaft zero setting position, the device is positioned on the workbench of lathe, using the device outside Amesdial beats directly two measurement end faces of the device, makes two measurement end faces parallel with the X-axis of lathe;Secure the device to On workbench;Each axis servomotor of lathe is run, the centre of sphere for making to be installed on the bulb check bar on the main shaft of lathe is located substantially at two The square crossing point of the axis of face contact type amesdial.
As the further improvement of such scheme, an error algebraic value is often obtained, just first closes the RTCP functions of lathe, Corresponding error algebraic value is filled into the relevant parameter of digital control system;Then, obtain the step of next error algebraic value Before rapid, the RTCP functions of lathe are then turned on.
Compared with existing or traditional caliberating device and detection method, apparatus of the present invention and method have the following advantages that:Behaviour Make convenient simple, it is time saving, laborsaving;Demarcate or accuracy of detection is high;Demarcate or detection efficiency is high.
The advantage specific manifestation of the present apparatus is as follows:
First, it is easy to use, have a wide range of application:Device is simple and direct, compact conformation, and small volume is not only suitable for small-sized five-axis robot Center, will not produce interference, excess of stroke etc., and the five-axis machine tools such as large-sized gantry are adapted to again;Double pendulum hair style is not only suitable for, double pendulum is also suitable for Working platform type and yaw add all types of five-axis linkage machine tools of turntable type.Principle is the same, and method is similar to.Profile is succinct, and is easy to Staff is picked and placeed;
2nd, high precision, shows:1. the equation of solving complexity is not needed, in the absence of the mistake in existing detection method yet Difference item, so as to also avoid the need for being repeatedly detected demarcation, testing result, correct;2nd, in the absence of the ball because of amesdial table point Head radius and the error that causes;3rd, amesdial is placed in the absence of because of manual, and causes measurement table bar with associated straight bobbin injustice The error that row causes;4th, demarcate or measure whole without intervention manually to device, it is to avoid extraneous force factor is to demarcating essence The trueness error that the interference of degree is brought;
3rd, it is easy to operate simple, efficiency high is demarcated, show:1st, amesdial need not be moved repeatedly, to utilize its peak value Carry out the ball limit of centering bulb check bar;2nd, position and conversion amesdial of the amesdial on platen need not repeatedly be set up State;3rd, need not repeatedly adjust and be that will adjust amesdial orientation in each different position, so that table bar to the greatest extent may be used Parallel to lathe axis servomotor, the present apparatus only need to be placed once and a certain linear axis of its side and lathe are parallel on energy ground; 4th, calculate simple, exclusive face contact type amesdial device and its detection method avoid the solution of complicated equation or approximate Accept or reject;Simultaneously because in the absence of calculation error and geometric error, so that this scaling method need not be repeatedly detected, correct knot Really.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of five-axis linkage machine tools RTCP dynamic accuracy caliberating devices of the present invention.
Fig. 2 is the front view of Fig. 1.
Fig. 3 is the application schematic diagram of Fig. 1.
Fig. 4 is the partial dynamic process schematic of Fig. 3.
Fig. 5 is the error source schematic diagram under existing scaling method.
Fig. 6 is the close-up schematic view of Fig. 5.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Also referring to Fig. 1 and Fig. 2, the five-axis linkage machine tools RTCP dynamic accuracies that present pre-ferred embodiments are proposed are demarcated Device includes support 3 and the face contact type amesdial 1 on support 3 and face contact type amesdial 22.
The axis of two face contact type amesdials is mutually perpendicular to and in the same plane, the device meets below equation: d1=d2≤ r-3mm, wherein, d1For in measurement 11 to two face contact type amesdials of end face of face contact type amesdial 1 The distance of the square crossing point of axis, d2It is 21 to two face contact type amesdials of measurement end face of face contact type amesdial 22 Axis square crossing point distance, r is that dynamic accuracy demarcates the Probe-radius of bulb check bar used (generally 15mm).As a example by bulb check bar with radius as 15mm, the distance of two measurement end faces 11,12 to crosspoint will<15mm, and Leave certain allowance, this just can guarantee that when the bulb centre of sphere of bulb check bar is located substantially on crosspoint (go exactly by It is cumbersome that the bulb check bar centre of sphere is placed on crosspoint, but even if the face contact type of the present apparatus can guarantee that the centre of sphere and intersect Point has certain site error, nor affects on precision calibration or detection), while by two measurement bars of face contact type amesdial (measuring end face, the measurement bar that measurement end face is located at can be flexible, only be pressed into, and amesdial just has reading) press-in one Part, so that two face contact type amesdials just have reading, and leaves certain reserve travel.
As long as in the case where conditions above is met, support 3 just can arbitrarily expand setting.In the present embodiment, support 3 includes water Flatrack 34 and vertical rack 35.Level frame 34 is set to base, and the base is used to be positioned in the device workbench of lathe.In order to The convenient and practical device, base is the magnet base with push button magnetic switch 4.When so, using the device, it is only necessary to the bottom of Seat is placed on the table, is typically all metal material on workbench, therefore, wait after setting estimated orientation, only need to be by button Formula magnetic switch 4 can conveniently start the magnetic of magnet base, so that it may support 3 is adsorbed on workbench stably, securely.Magnetic The push button design of power switch 4 can avoid, when the magnetic function of magnet base is opened, because of the skew of the base that shake is produced, drawing Play unnecessary calibrated error, measurement error.
Support 3 can have for installing the installation position 1 of face contact type amesdial 1, for installing thousand points of face contact type The installation position 2 32 of table 22;Two installation positions are mutually perpendicular to constitute two-dimensional space.Installation position 1 may be provided at level frame 34 On, installation position 2 32 is arranged on vertical rack 35.That is bottom surface (i.e. level frame 34) and side (the i.e. vertical rack of support 3 35) it is mutually perpendicular to, the measurement end face of face contact type amesdial 1 is parallel to the bottom surface of support 3, the survey of face contact type amesdial 22 Amount end face is parallel to the side of support 3.Level frame 34 may be configured as smooth transition face with the transition position of vertical rack 35, in support 3 It is upper that even handle can be set, it is convenient for carrying, of course, it is also possible to the appropriate handle for extending vertical rack 35 as integrative-structure, Strengthen the structural stability of the device.In other embodiments, level frame 34 can also be hollow structure, be directly embedded into magnetic force Seat realizes the magnetic function of support 3.Magnetic switch 4 is also not limited to push button design, can be touch design, or distance type Design etc..
In a word, it is most important that the installation site of two face contact type amesdials and direction:The bottom surface of support and side phase Mutually vertical, two axis of face contact type amesdial must be mutually perpendicular to and in the same plane, and one of face connects The distance of the measurement end face of the axis of touch amesdial and another face contact type amesdial is 0 between 15mm.Two faces connect 11,21 bottom surface and side respectively with support 3 of measurement end face of touch amesdial is parallel to each other, so as to ensure their measurement end Face is also mutually perpendicular to.
Typically, five axles of Digit Control Machine Tool include first straight line axle, second straight line axle, the 3rd linear axis, gyroaxis, swing Axle.Wherein, three linear axis are mutually perpendicular to, and gyroaxis is to be respectively with the two of which linear axis of three linear axis with swinging axle The rotary shaft of central rotation.In the present embodiment, the axle of X, Y, Z tri- of Digit Control Machine Tool is three orthogonal linear axis, A, B, C Three axles are respectively the rotary shafts around the axle of X, Y, Z tri-, and five axles in five-axle linkage refer to that tri- linear axis of X, Y, Z add A, B, C tri- Any two of which rotary shaft of individual rotary shaft, one of them is gyroaxis, and another is swinging axle.
Five-axis linkage machine tools RTCP precision calibration methods of the invention are comprised the following steps.
1) device is adsorbed in the appropriate location on the workbench of lathe, and makes the axis of face contact type amesdial 22 Axis of rotation of the line perpendicular to the swinging axle of lathe.Servo linear axis where operation machine tool chief axis, examine the bulb on main shaft The bulb centre of sphere of rod is located substantially at the point of intersection position of two face contact type amesdial axis.Start lathe RTCP functions, operation After 90 ° of the gyroaxis of lathe, by two face contact type amesdial reading zero setting.
2) 180 ° of operation machine tool rotary axle, reads the reading value one of face contact type amesdial 22, the half of the reading value one As the axis of rotation of gyroaxis swinging axle error algebraic value one on first straight line axle (such as X-axis) direction.Closing machine Bed RTCP functions, the relevant parameter in the error compensation rule writing system of related digital control system is pressed by this error algebraic value one In.
3) lathe RTCP functions, operation gyroaxis to initial position, by two face contact type amesdial reading zero setting, fortune are started 90 ° of row swinging axle, reads two reading values of face contact type amesdial two and reading value three respectively, is put according to below equation The axis of rotation of moving axis is in gyroaxis institute around second straight line axle (such as Z axis) and the 3rd linear axis (i.e. except gyroaxis and swinging axle institute The 3rd axle outside linear axis, such as Y-axis) ε of error algebraic value two on directionZWith the ε of error algebraic value threeY:I1Y- εZ, I2 =-εYZ, wherein, I1、I2The reading of the reading value two and face contact type amesdial 22 of face contact type amesdial 1 is represented respectively Numerical value three.Lathe RTCP functions are closed, by εZ、εYBy the related ginseng in the error compensation rule writing system of related digital control system In number.
4) lathe RTCP functions, operation swinging axle to initial position, by two face contact type amesdial reading zero setting, fortune are started 180 ° of row gyroaxis, the reading value four of record face contact type amesdial 2, the half of the reading value four is the gyroaxis of gyroaxis Orthogonal distance error algebraic value four between line and the axis of rotation of swinging axle.Lathe RTCP functions are closed, by error algebraic value Four by the relevant parameter in the error compensation rule writing system of related digital control system.
5) after the completion of aforementioned four step, then the RTCP precision calibrations work of lathe is completed.Then can be under RTCP states The axle of integrated operation lathe five links simultaneously, detects that the RTCP dynamic accuracies of lathe demarcate effect.
This four error amounts be demarcate used by basic numerical value and critical values, the parameter read-in of digital control system, that is several The solid anything of control system institute's band, the different i.e. relevant parameter of different digital control system writing modes in itself can have been adjusted It is whole.The digital control system relevant parameter for example having refers to:The axis of rotation of the sign gyroaxis of error algebraic value one mistake in the X-axis direction Difference parameter, error algebraic value two and error algebraic value three characterize the axis of rotation of swinging axle in Y direction and Z-direction respectively Error parameter, error algebraic value four characterizes the orthogonal distance error ginseng of the axis of rotation of axis of rotation and the swinging axle of gyroaxis Number.And some digital control systems also need to some extra and are simply provided, different digital control systems has different requirements.It is of the invention Apparatus and method, exactly detect this four keys, basic error amounts.Those skilled in the art just combine actual answering The offset rule of digital control system, by this four relevant parameters of error amount write-in digital control system.
Next, by taking the five-axis machine tool of double pendulum working platform type as an example for example, herein five axles in five-axle linkage refer to X, Tri- linear axis of Y, Z add two rotary shafts of A, C, and specifically C is gyroaxis here, and A is swinging axle.Certain five-axis machine tool also has It is probably B, C axle, or A, B axle etc., the present apparatus is equally applicable.
Incorporated by reference to Fig. 3 and Fig. 4, the five-axis linkage machine tools RTCP dynamic accuracies caliberating device of the present embodiment, will when demarcating Device is adsorbed on the workbench 5 of lathe.Bulb check bar 6 is located at two measurement end faces of face contact type amesdial by operation lathe 11st, between 21 liang of Z-axis zero setter measurement ends (the i.e. two measurement end faces of face contact type amesdial 11,21), bulb check bar 6 is made Sphere center position is located substantially at two axle center point of intersection of face contact type amesdial 1,2;Operation lathe, is allowed to perform related moving Make, the reading of two face contact type amesdials is recorded respectively, and after carrying out computing according to analytical formula, acquired results are lathe five Axle linkage RTCP trueness error values, are written into lathe relevant parameter, that is, complete a five-axis linkage machine tools RTCP dynamic The demarcation of precision.
Start Digit Control Machine Tool RTCP functions, lathe is run the various actions designed by this method:1) make to adsorb thereon The present apparatus face contact type amesdial 22 axis perpendicular to axis (i.e. X-axis) direction of swinging axle, run gyroaxis Amesdial reading zero setting after 90 °, then runs 180 ° of gyroaxis, reads the reading of face contact type amesdial 22;2) operation revolution Axle runs 90 ° of swinging axle to initial position, two readings of face contact type amesdial is read, referring to Fig. 4;3) swinging axle is run To initial position, 180 ° of gyroaxis is run, record the reading of face contact type amesdial.Using the equation of this method to above-mentioned reading Numerical value is processed, that is, obtain this five-axis linkage machine tools RTCP dynamic accuracy error amounts, and its value is advised by the compensation of digital control system Then in write-in relevant parameter, then demarcate and complete.And above-mentioned 2) step be the difficult point demarcated, detect, be also that this scaling method is better than One of at the most obvious embodiment of current methods:
The difference of analytic routines scaling method and this scaling method in the above-mentioned the 2) step:
First analysis and utilization conventional equipment and method gained reading value and its survey between lathe RTCP trueness error values Relation is, as shown in Fig. 5 and Fig. 6:
And apparatus of the present invention and method are utilized, cause that the contact surface of amesdial is being surveyed by the way of face contact type amesdial The limit holding of moment and ball is contacted on amount direction, so as in avoiding aforesaid equation WithItem (i.e. e in Fig. 6), and eliminate because the measurement contact jaw of conventional amesdial is ball Head shapes and non-ideal cusp and the error delta 1 that produces and Δ 2.So as to analyze gained amesdial reading value and institute's survey lathe Relational expression between RTCP trueness error values is:
I1=-εYZ………………③
I2=-εYZ………………④
In above-mentioned four formula, I1、I2The reading value of face contact type amesdial is represented respectively;εYAnd εZIt is illustrated respectively in be examined Lathe swinging axle distance of shaft centers is in its Y-direction and the error of Z-direction in the fixed RTCP precision of mark;R represents the size of the radius of bulb check bar 6 (generally 15mm);Δ 1 and Δ 2 are represented because the measurement contact jaw of conventional amesdial is actually one spherical and non-ideal respectively The geometric error that cusp is caused, certain this number is usually smaller.From 1 formula and 2 formulas:Even if not considering to hand over less The Δ 1 and Δ of error2, its equation is also more complicated, to solve its value take, it is laborious.
And 3 formulas and 4 formulas are missed using the face contact type amesdial reading and RTCP precision obtained by apparatus of the present invention and method Relational expression between difference.As can be seen that the error term under current methods is avoided using the present apparatus and method, so as to greatly simplify Relation between amesdial reading and lathe RTCP trueness errors.Improve stated accuracy and efficiency.
Five-axis linkage machine tools RTCP dynamic accuracies are demarcated, and are also the detection process of its dynamic RTCP dynamic accuracy.So this Caliberating device and scaling method are applied to the detection of RTCP dynamic accuracies with same superiority.
In sum, in the present embodiment, the five-axis linkage machine tools RTCP precision calibrations method of the device includes following step Suddenly.
The first step:After various conventional accuracy detection, compensation in lathe are completed, operation lathe makes each rotary shaft of lathe Back to zero position, the device is positioned on the workbench of lathe, using conventional amesdial by support side plane by the device centering, Make two measurement end face parallel with the X-axis of lathe, the device is absorbed and fixed on workbench, run machine Z-axis, make installation Two square crossing points of the axis of face contact type amesdial are located substantially in the centre of sphere of the bulb check bar on the main shaft of lathe .
Second step:Start lathe RTCP functions, run 90 ° of the C axles of lathe, two face contact type amesdial readings are put Zero, now in X-axis, its measurement end face runs C axle 180 degrees to the diameter parallel of face contact type amesdial 22 perpendicular to X-axis, reads The value of face contact type amesdial 22 is reading value one, and the half of the reading value one is the revolution of the workbench that is, C axles of lathe Axis RTCP trueness errors algebraic value one in the X-axis direction, closes the RTCP functions of lathe, and the error algebraic value one is pressed into machine In the relevant parameter of the offset rule write-in control system of the control system of bed.
3rd step:Start lathe RTCP functions, run 90 degree of C axles, now the axis parallel of face contact type amesdial 22 In Y-axis, and end face is measured perpendicular to Y-axis in its side.By two reading of face contact type amesdial all zero setting, operation lathe A axle rotations 90 °, while two reading values of face contact type amesdial two of record and reading value three, the A axles of lathe are obtained according in the following manner Error algebraic value two ε of the axis of rotation in Y direction and Z-directionYWith the ε of error algebraic value threeZ, I1Y- εZ, I2=- εYZ, wherein, I1、I2The reading value two of face contact type amesdial 1 and the reading value of face contact type amesdial 22 are represented respectively Three.The RTCP functions of lathe are closed, error algebraic value two and error algebraic value three are pressed the offset rule of the control system of lathe Write in the relevant parameter of control system.
4th step:Start lathe RTCP functions, the A axle return-to-zero positions of lathe are run, by the reading of face contact type amesdial 2 Zero setting, operation C axles rotate 180 °, and the value for reading face contact type amesdial 22 is reading value four, and the half of the reading value four is The workbench of lathe is the orthogonal distance error algebraic value four of C axles axis of rotation and A axle axiss of rotation, closes RTCP functions, will In relevant parameter of the error algebraic value four by the offset rule write-in control system of digital control system.
5th step:After performing above-mentioned four step, the RTCP precision calibrations of lathe are completed, and are finally again started up lathe RTCP, comprehensive Five axles for closing operation lathe are linked simultaneously, and the demarcation effect of lathe RTCP dynamic accuracies is detected using the device.
As shown in figure 3, by each axis servomotor back to zero of lathe or being placed in appropriate location first.The present apparatus is positioned over the work of lathe Make the appropriate location of platform, its align laterally is pressed using conventional amesdial, make device side parallel to a certain linear axis of lathe, also Even if measurement end face 2 is parallel to a certain linear axis of lathe.The magnetic switch 4 on device is pressed, then device firmly, is stably inhaled Invest on platen.During whole RTCP precision calibrations after this or detection, without mobile manually or adjustment again this Device.
Lathe can be manually run, the centre of sphere of the bulb check bar 6 that will be installed on machine tool chief axis substantially runs to two faces and connects The point of intersection of the axis of touch amesdial.Now two face contact type amesdials are depressed 3~5mm or so respectively, this guarantee Measured error positive and negative both direction have 3~5mm scope allowance (this for the five axle RTCP trueness errors enough, The measurement range of certain apparatus of the present invention is not limited to 3~5mm).
Because device employs face contact type amesdial, and it is designed to the layout on support 3 as shown in Figure 1, 2.Dress The measurement surface (measuring end face 11) for putting itself bottom faces (i.e. level frame 34) and face contact type amesdial 1 is parallel, i.e., with The measurement surface (measuring end face 21) of face contact type amesdial 22 is vertical, and device bottom surface and side (i.e. vertical rack 35) phase It is mutually vertical, therefore two measurement end faces of face contact type amesdial 11,21 are mutually perpendicular to, two axis of face contact type amesdial Also it is parallel with respective associated machine tool linear axis respectively.Of course, the support 3 of the present apparatus is bottom surface (i.e. level frame 34) and side (i.e. vertical rack 35) is vertical, but is not limited to this, as long as meeting:Make the contact surface of the face contact type amesdial of side parallel to The a certain linear axis of lathe (such as X-axis) (namely its axis is perpendicular to another linear axis of correspondence, such as Y-axis).
So this structure and layout of the present apparatus, give the advantage that:
First, device structure in itself just determines that two axis of face contact type amesdial lathes associated therewith are watched Take axle diameter parallel.Amesdial table bar and associated machine tool axis servomotor are manipulated avoiding problems artificial under existing detection means and method The error that axis is not parallel and brings, while reducing the requirement to operating personnel's technical merit;
Secondly, the face contact type amesdial and its layout of use so that now two of the bulb of bulb check bar 6 and device Measure end face 11,21 contact point be exactly naturally the bulb of bulb check bar 6 two limits, avoiding problems under current methods Amesdial is moved back and forth with the cumbersome action of the pole location of centering ball, while avoid device and influenceed by external force and produced Error;
Again, the present apparatus employs this layout structure of two face contact type amesdials on support 3 simultaneously, it is to avoid The troublesome operation of amesdial is repeatedly set up in the different azimuth of bulb check bar 6.
Above step can be seen that using this caliberating device and its scaling method, without as the multiple shifting under current mode The position of dynamic amesdial, without the orientation of repeatedly conversion dial gauge or amesdial, without moving repeatedly amesdial so as to pass through The reading peak value of amesdial determines the pole location of the ball of bulb check bar, equation without solving complexity or carries out repeatedly anti- Recheck and survey to correct testing result.
The present apparatus and method are demarcated and detection is whole only need to for the first time be laid centering whole, thereafter process again without Need manually to carry out device intervention operation, and calculate extremely simple, stated accuracy is high.Under existing demarcation detection mode, complete It is whole to demarcate or detection process, usually need or so hour, or even several hours.And apply the present apparatus and detection method Can be completed in 10 minutes, substantially increase demarcation efficiency.
The preferred embodiment of the invention is the foregoing is only, creation is not intended to limit the invention, it is all at this Any modification, equivalent and improvement made within the spirit and principle of innovation and creation etc., should be included in the invention Protection domain within.

Claims (10)

1. a kind of five-axis linkage machine tools RTCP dynamic accuracy caliberating devices, it is characterised in that:It includes support (3) and is arranged on Face contact type amesdial one (1) and face contact type amesdial two (2) on support (3);Two axis of face contact type amesdial Line is mutually perpendicular to and in the same plane, the device meets below equation:d1=d2≤ r-3mm, wherein, d1It is face contact type thousand That is divided to table one (1) measures end face to two distances of the square crossing point of the axis of face contact type amesdial, d2For face contacts To two distances of the square crossing point of the axis of face contact type amesdial, r is demarcation to the measurement end face of formula amesdial two (2) The Probe-radius of bulb check bar.
2. five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in claim 1, it is characterised in that:Support (3) has There are the installation position one (31) for mounting surface contact amesdial one (1), the installation for installing face contact type amesdial two (2) Position two (32);Two installation positions are mutually perpendicular to constitute two-dimensional space.
3. five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in claim 2, it is characterised in that:Support (3) is wrapped Level frame (34) and vertical rack (35) are included, installation position one (31) is arranged on level frame (34), and installation position two (32) is arranged on vertical On straight frame (35).
4. five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in claim 3, it is characterised in that:Level frame (34) Base is set to, the base is used to be fixed in the device workbench of lathe.
5. five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in claim 4, it is characterised in that:The base is band There is the magnet base of push button magnetic switch.
6. five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in claim 1, it is characterised in that:Support (3) sets It is equipped with handle.
7. five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in claim 1, it is characterised in that:Support (3) is Integral structure.
8. the five of a kind of five-axis linkage machine tools RTCP dynamic accuracy caliberating devices as claimed in any of claims 1 to 7 in one of claims Axle linkage machine tool RTCP precision calibration methods, five axles include first straight line axle, second straight line axle, the 3rd linear axis, gyroaxis, pendulum Moving axis, wherein, three linear axis are mutually perpendicular to, and gyroaxis and swinging axle are respectively with three two of which linear axis of linear axis Centered on rotate rotary shaft;It is characterized in that:It is comprised the following steps:
1) device is adsorbed in the appropriate location on the workbench of lathe, and makes the axis of face contact type amesdial two (2) Servo linear axis where the axis of rotation of the swinging axle of lathe, operation machine tool chief axis, make the bulb check bar on main shaft The bulb centre of sphere be located substantially at the point of intersection of two face contact type amesdial axis for position, start lathe RTCP functions, operation After 90 ° of the gyroaxis of lathe, by two face contact type amesdial reading zero setting;
2) 180 ° of operation machine tool rotary axle, reads the reading value one of face contact type amesdial two (2), and the half of the reading value one is For gyroaxis axis of rotation swinging axle error algebraic value one on first straight line direction of principal axis;Close lathe RTCP work( Can, in the relevant parameter in the regular writing system of error compensation that this error algebraic value one is pressed into related digital control system;
3) start lathe RTCP functions, operation gyroaxis to initial position runs 90 ° of swinging axle, two face contacts are read respectively The reading value two of formula amesdial and reading value three, the axis of rotation according to below equation acquisition swinging axle is in gyroaxis institute around second The ε of error algebraic value two on linear axis and the 3rd straight line direction of principal axisZWith the ε of error algebraic value threeY:I1Y- εZ, I2=-εYZ, Wherein, I1、I2The reading value two of face contact type amesdial one (1) and the reading value of face contact type amesdial two (2) are represented respectively Three;Lathe RTCP functions are closed, by εZ、εYBy in the relevant parameter in the error compensation rule writing system of related digital control system;
4) lathe RTCP functions are started, operation swinging axle to initial position runs 180 ° of gyroaxis, records face contact type amesdial (2) reading value four, the half of the reading value four is between the axis of rotation of gyroaxis and the axis of rotation of swinging axle just Hand over range error algebraic value four;Lathe RTCP functions are closed, error algebraic value four is pressed the error compensation rule of related digital control system Then in the relevant parameter in writing system;
5) after the completion of aforementioned four step, then the RTCP precision calibrations work of lathe is completed, and is then comprehensively transported under RTCP states The axle of row lathe five links simultaneously, detects that the RTCP dynamic accuracies of lathe demarcate effect.
9. five-axis linkage machine tools RTCP precision calibration methods as claimed in claim 8, it is characterised in that:In step 1) in, After the various accuracy detections of lathe, compensation are completed, operation lathe makes each rotary shaft zero setting position of lathe, and the device is positioned over On the workbench of lathe, two measurement end faces of the device are beaten directly using the amesdial outside the device, make two measurement end faces X-axis with lathe is parallel;Secure the device on workbench;Each axis servomotor of lathe is run, makes to be installed on the main shaft of lathe On the centre of sphere of bulb check bar be located substantially at two square crossing points of the axis of face contact type amesdial.
10. five-axis linkage machine tools RTCP precision calibration methods as claimed in claim 8, it is characterised in that:Often obtain a mistake Difference algebra value, just first closes the RTCP functions of lathe, by the relevant parameter of corresponding error algebraic value write-in digital control system;So Afterwards, before the step of obtaining next error algebraic value operation is carried out, the RTCP functions of lathe are then turned on.
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