CN109333156B - A kind of error scaling method synchronous with posture for five-axle number control machine tool RTCP detection - Google Patents

A kind of error scaling method synchronous with posture for five-axle number control machine tool RTCP detection Download PDF

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CN109333156B
CN109333156B CN201811339421.1A CN201811339421A CN109333156B CN 109333156 B CN109333156 B CN 109333156B CN 201811339421 A CN201811339421 A CN 201811339421A CN 109333156 B CN109333156 B CN 109333156B
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CN109333156A (en
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丁启程
王伟
杜丽
丁杰雄
姜忠
张靖
庞涛
姜越友
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University of Electronic Science and Technology of China
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
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    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/404—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia

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Abstract

The invention discloses a kind of error scaling methods synchronous with posture for five-axle number control machine tool RTCP detection, aiming at the problem that cannot reflecting cutter-orientation corresponding to knife position of cusp error existing for the current RTCP detector, method of the invention is being changed without, in the case where existing RTCP detecting instrument is transformed, by adding one section of X respectively in the RTCP detection instruction of input lathe, Y, the calibration of the positive negative direction of three axis of Z is displaced, 3 groups are carried out altogether, total 6 detections, it converts attitude angle coordinate function and error function to obtain the error of point of a knife point and the function of cutter-orientation, utilize conversion and calculation method, determine numerical relation, realize the detection synchronous with cutter-orientation of point of a knife point tolerance, more it is accurately obtained knife position of cusp error and its corresponding cutter-orientation, more accurately reflect lathe Dynamic accuracy.

Description

A kind of error scaling method synchronous with posture for five-axle number control machine tool RTCP detection
Technical field
The invention belongs to multiaxis NC maching accuracy detection fields, and in particular to one kind is examined for five-axle number control machine tool RTCP The error of survey scaling method synchronous with posture.
Background technique
Numerically-controlled machine tool is the basis of modern manufacturing industry, and the precision of numerically-controlled machine tool will directly affect the precision of converted products.Five Shaft and NC Machining Test lathe, as its name suggests, by adding two rotation axis on the basis of traditional three axis lathe, so that it be made to be processed Complex-curved ability is widely used in the processing of the high removal rates, high-precision workpiece such as airplane component, impeller propeller, It is had an important influence in fields such as aerospace, precision instruments.For five-axle number control machine tool, other error classes have been compared Type, dynamic error caused by servo-system dynamic property defect are that the most main of machining accuracy is influenced in high-speed, high precision motion process It wants factor, therefore, detect for dynamic accuracy, has great importance to the use and improvement of five-axle number control machine tool.
RTCP detector is a kind of more common five-axis machine tool dynamic precision detector device.Modern five-axis machine tool utilizes RTCP (Rotation Tool Centre Point) function reduces in rotation process around center cutter point rotation function Nonlinearity erron, according to the function, foreign countries develop RTCP detector, and the device is by 3 fixed orthogonal displacement sensings Device and 1 standard ball composition being mounted on main shaft, are based on RTCP function, and design five-axle linkage instruction keeps main shaft end mark Quasi- ball is static with respect to workbench, utilizes the offset deviation on detection three directions of bead, directly the dynamic essence of reflection five-axis machine tool Degree.
The basic skills of RTCP detection are as follows: open the RTCP function that numerical control is got up, setting knife position of cusp is fixed, cutter appearance State angle change, theoretically point of a knife point should be remain stationary, but due to the presence of each axis tracking error, actually point of a knife point can be produced Raw calibration displacement, that is, produce error, demarcated and be displaced by detection and analysis point of a knife point, it can be estimated that machine tool capability and guides machine Bed debugging.However current RTCP detector can only generally detect the location error of three axial directions of tool nose point, cannot reflect Cutter-orientation corresponding to location error can not derive cutter shaft point pose by cutter-orientation when analyzing testing result Accurately to trace the source of point of a knife point tolerance, detection method is incomplete.For this problem, CN104625880A is disclosed A kind of RTCP detection device, synchronous detection point of a knife point tolerance and cutter-orientation angle, but the technology is related to a kind of new detector Device, production complexity and higher cost.In conclusion lack one kind at present carries out RTCP error on the basis of existing detecting instrument The detection method of detection synchronous with posture.
Summary of the invention
The purpose of the present invention is to provide a kind of calibration synchronous with posture of error for five-axle number control machine tool RTCP detection Method, aiming at the problem that cannot reflecting cutter-orientation corresponding to knife position of cusp error existing for the current RTCP detector, In the case where being changed without, detecting instrument not being transformed, divides detecting step with increased portion by improving, be more accurately obtained point of a knife Point location error and its corresponding cutter-orientation more accurately reflect lathe dynamic accuracy.
The embodiment of the present invention is achieved in that
A kind of error scaling method synchronous with posture for five-axle number control machine tool RTCP detection, comprising the following steps:
S1, establish X-axis, Y-axis, Z axis triaxial coordinate axis；
S2, it is detected by the RTCP that five-axle number control machine tool completes calibration displacement to the positive direction of X-axis and negative direction respectively, together Step completes the detection of calibration posture, and error, which is added, in the testing result of three axis directions in point of a knife o'clock indicates；
S3, point of a knife o'clock is obtained by S2 in the testing result of three axis directions and the relationship of error, will test result and error Relationship indicated with attitude angle coordinate function；
S4, point of a knife point is taken into approximation in the error of Y-axis and Z axis, value is respectively Y-axis, the error of Z axis about attitude angle The average value of degree；
S5, by testing result is obtained with X-axis positive direction inverted order averaged, then by the value in S4 twice in step S3 To cutter posture and point of a knife point Y-axis and Z axis two angle detecting result and error relationship；
S6, repetition step S2~S5 respectively detect Y-axis and Z axis, take testing mean corresponding with axis, obtain knife The error of cusp and the relationship of cutter-orientation.
In preferred embodiments of the present invention, the positive and negative two angle detectings result expression in above-mentioned S2 is respectively as follows:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, XIt surveys、YIt surveysAnd ZIt surveysRespectively X, Y and Z tri- shaft detection As a result, tAlwaysFor the total duration of single detection, d is calibration displacement, and t is the duration for completing calibration displacement, t+And t-Respectively indicate with it is complete The later moment in time and previous moment of a bit of time are spaced at detection.
In preferred embodiments of the present invention, the attitude angle coordinate function expression formula of the testing result twice in above-mentioned S3 It is respectively as follows:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, XIt surveys、YIt surveysAnd ZIt surveysRespectively X, Y and Z tri- shaft detection As a result, i and j are respectively the variable of attitude angle, t is the duration for completing calibration displacement, i+、j+And i-、j-It respectively indicates and completes Detection is spaced the latter attitude angle and previous attitude angle of a bit of time.
In preferred embodiments of the present invention, testing result of the point of a knife point in two direction of Y-axis and Z axis is set respectively in above-mentioned S5 For Y' and Z', expression formula are as follows:
Wherein, ey +、ey -And ez +、ez -To complete the latter time and the difference of previous time that detection is spaced a bit of time For the point of a knife point tolerance of y and z-axis, x is the X-direction component of testing result.
In preferred embodiments of the present invention, the expression formula of the posture function of cutter in above-mentioned S5 are as follows:
Wherein, t is the duration for completing calibration displacement, tAlwaysFor the total duration of single detection, d is calibration displacement, and x is detection knot The X-direction component of fruit, f and g are respectively the function of angle and time.
In preferred embodiments of the present invention, the relationship of above-mentioned point of a knife point tolerance and cutter-orientation takes S2~S6 average detected As a result.
In preferred embodiments of the present invention, approximation condition is taken in above-mentioned S4 are as follows: t+And t-Respectively between completion detection Every time be much smaller than tAlways。
In preferred embodiments of the present invention, the range of above-mentioned calibration displacement is 0~5mm.
In preferred embodiments of the present invention, in above-mentioned S2~S5, the detection ordering of X-axis, Y-axis and Z axis is interchangeable.
In preferred embodiments of the present invention, it is empty that the coordinate origin of above-mentioned triaxial coordinate axis is set as the tool nose before detection Between position.
The beneficial effects of the present invention are:
The present invention is in the case where being changed without, existing RTCP detecting instrument being transformed, by establishing coordinate pair X-axis, Y-axis and Z Three axis of axis are respectively completed positive direction and the calibration displacement detecting of negative direction and synchronous calibration attitude detection, attitude angle are sat Scalar functions and error function convert to obtain the error of point of a knife point and the function of cutter-orientation, so that it is determined that value relationship, that is, realize The detection synchronous with cutter-orientation of point of a knife point tolerance, is more accurately obtained knife position of cusp error and its corresponding cutter appearance State more accurately reflects lathe dynamic accuracy.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range.
Fig. 1 is the schematic diagram of space displacement of the point of a knife point of the present invention along X-axis positive direction；
Fig. 2 is schematic diagram of the RTCP testing result of the present invention along tri- axis direction component of XYZ；
Fig. 3 is the schematic diagram of space displacement of the point of a knife point of the present invention along tri- axis of XYZ；
Fig. 4 is schematic diagram of the RTCP testing result of the present invention along tri- axis direction component of XYZ.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.
First embodiment
The present embodiment provides it is a kind of for five-axle number control machine tool RTCP detection error scaling method synchronous with posture, for It the problem of cannot reflecting cutter-orientation corresponding to knife position of cusp error existing for RTCP detector at present, is being changed without, changing In the case where making existing RTCP detecting instrument, by adding one section of X, Y, Z respectively in the RTCP detection instruction of input lathe The calibration of the positive negative direction of three axis is displaced, and carries out 3 groups, total 6 detections altogether, attitude angle coordinate function and error function are converted The error of point of a knife point and the function of cutter-orientation are obtained, using conversion and calculation method, determines numerical relation, i.e. realization point of a knife point Error calibration synchronous with cutter-orientation, please refers to Fig. 1 comprising following steps:
S1, establish X-axis, Y-axis, Z axis triaxial coordinate axis；The instruction point of point of a knife point is set in digital control system as workpiece coordinate It is origin, cutter-orientation coordinate (i, j) changes over time, and RTCP detection track may be expressed as:
Wherein, X, Y, Z are fixed value, and i, j change over time, and f and g are respectively the function of angle and time.
S2, the detection that calibration displacement is respectively completed by positive direction and negative direction of the five-axle number control machine tool to X-axis, have synchronized At the detection of calibration posture.
Referring to figure 2., on the basis of original RTCP detection method, it is additional be arranged point of a knife point respectively along each reference axis just Negative direction at the uniform velocity demarcates displacement, by taking X-axis as an example, the at the uniform velocity calibration displacement of X-axis positive direction is first arranged, carries out first time detection, In It inputs in the RTCP detection instruction of lathe and adds one section of X-axis positive direction calibration displacement, detect trail change are as follows:
Wherein, tAlwaysFor the total duration of single detection, d is calibration displacement overall length, and t is the duration for completing calibration displacement, f and g The respectively function of angle and time, in order to which convenient for calculating simultaneously without departing from the detection range of RTCP detector, d is small Displacement, is usually arranged as 1~4mm, d takes 2mm.RTCP detection, the Y of obtained testing result, Z-direction point are carried out using the track Amount can be denoted as (ey +(x), ez +(x)), wherein x be testing result X-direction component.
Then, one section of X-axis negative direction is added in the RTCP detection instruction of input lathe and at the uniform velocity demarcate displacement, carry out second Secondary detection carries out RTCP detection using the track, and obtained testing result can be denoted as (ey -(x), ez -(x)) digital control system, is inputted Position and attitude command, detect trail change are as follows:
Wherein, tAlwaysFor the total duration of single detection, d is calibration displacement overall length, and t is the duration for completing calibration displacement, f and g The respectively function of angle and time, in order to which convenient for calculating simultaneously without departing from the detection range of RTCP detector, d is small Displacement, is usually arranged as 1~4mm, d takes 2mm.RTCP detection, the Y of obtained testing result, Z-direction point are carried out using the track Amount can be denoted as (ey +(x), ez +(x)), wherein x be testing result X-direction component.
Since the calibration displacement of point of a knife point is very micro- for the translation shaft variation that cutting-tool angle attitudes vibration drives It is small, it is believed that the positioning of this segment mark moves the dynamic property for having substantially no effect on lathe.If point of a knife point tolerance is (ex, ey, ez), then on State the result detected twice are as follows:
Wherein, the duration of calibration displacement, t are completed when t is detectionAlwaysFor the total duration of single detection, d is that calibration is displaced, three The point of a knife point tolerance of axis is set to ex、ey、ez, d is calibration displacement overall length.
The transformation of the above testing result is expressed as:
Wherein, XIt surveys、YIt surveysAnd ZIt surveysRespectively tri- shaft detection of X, Y and Z as a result, the point of a knife point tolerance of three axis is set to ex、 ey、ez, tAlwaysFor the total duration of single detection, t is the duration for completing calibration displacement, t+And t-It respectively indicates small with t period interval one The later moment in time and previous moment of section time, d are calibration displacement.
S3, point of a knife o'clock is obtained by S2 in the relationship of three axis directions and error, will test the relationship appearance of result and error State angle coordinate function representation.
Due to tAlways, d be cutter-orientation angle coordinate input instruction (i, j) and detection according to actually detected obtained constant Time t is corresponding, therefore the above testing result may be expressed as:
Wherein, XIt surveys、YIt surveysAnd ZIt surveysRespectively tri- shaft detection of X, Y and Z as a result, the point of a knife point tolerance of three axis is set to ex、 ey、ez, F is attitude angle coordinate function.
S4, point of a knife point is taken into approximation in the error of Y-axis and Z axis, value is respectively Y-axis, the error of Z axis about attitude angle The average value of degree.
Due to t+、t-The time being separated by with t is compared to detection total duration tAlwaysFor it is smaller, therefore can be approximately considered:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, i+、j+And i-、j-It respectively indicates and completes between detecting Every the latter attitude angle and previous attitude angle of a bit of time.
S5, by testing result is obtained with X-axis positive direction inverted order averaged, then by the value in S4 twice in step S3 To cutter posture and point of a knife point two direction of Y-axis and Z axis error relationship.
Using the track carry out RTCP detection, testing result of the point of a knife point in two direction of Y-axis and Z axis be set to Y' and Z', Y, the Z-direction component of obtained testing result can be denoted as (ey +(x), ez +(x)) it, carries out second to detect, uses the track RTCP detection is carried out, obtained testing result can be denoted as (ey -(x), ez -(x)) it, testing result will be asked twice with X positive direction inverted order It is averaged available:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, x is the X-direction component of testing result.
So X', Y' and Z', with attitude angle coordinate function relationship are as follows:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, i+、j+And i-、j-It respectively indicates and completes between detecting Every the latter attitude angle and previous attitude angle of a bit of time, F is attitude angle coordinate function.
By calculating available point of a knife point above in Y, the error of Z-direction.Meanwhile the cutter-orientation (i, j) in detection It can be expressed as the function of x:
Wherein, tAlwaysFor the total duration of single detection, t is the duration for completing calibration displacement, and d is calibration displacement, f and g difference For the function of angle and time.
It is possible thereby to which the corresponding posture of point of a knife point tolerance is calculated.
Referring to figure 3., by detecting and calculating above, Y', Z' are equal to point of a knife point tolerance, and X' can be found out pair by F (i, j) The cutter ideal pose (i, j) answered.In RTCP detection, practical attitude angle compared to ideal pose angle there is also error, But error is minimum for attitude angle angle value, it is believed that current cutter-orientation is approximately equal to the ideal appearance of icking tool tool at this time State.To sum up, by being displaced in the positive negative direction setting calibration of X-axis and carrying out RTCP detection respectively, available point of a knife point is in Y, the side Z To error (ey, ez) and its corresponding cutter-orientation (i, j).
S6, repetition step S2~S5 respectively detect Y-axis and Z axis, take testing mean corresponding with axis, obtain knife The error of cusp and the relationship of cutter-orientation；Referring to figure 4., according to step S2~S5, by the positive negative direction setting calibration of Y-axis It is displaced and carries out RTCP detection respectively, available point of a knife point is in X, the error (e of Z-directionx, ez) and its corresponding cutter-orientation, By being displaced in the positive negative direction setting calibration of Z axis and carrying out RTCP detection respectively, available point of a knife point is in X, the error of Y-direction (ex, ey) and its corresponding cutter-orientation.To sum up, to tri- axis setting calibration displacements of X, Y, Z, detection is carried out respectively and to detection As a result averaged can more detect to obtain the error (e of point of a knife point exactly by RTCPx, ey, ez) and its corresponding knife Has posture.
By the calibration position for adding the positive negative direction of three axis of one section of X, Y, Z respectively in the RTCP detection instruction of input lathe It moves, detection is same as above with calculation method, is carried out 3 groups, total 6 times altogether and is detected, 2 times in X-direction detect available point of a knife point and exist Y, the error in Z-direction and cutter-orientation (Y1(i, j), Z1(i, j)), X can be obtained, in Z-direction in 2 detections in Y-direction Error and cutter-orientation (X2(i, j), Z2(i, j)), X, the error in Y-direction and cutter appearance can be obtained in 2 detections in Z-direction State (X3(i, j), Y3(i, j)), result above is sought averagely, point of a knife point tolerance and its corresponding cutter-orientation can be calculated:
In conclusion the present invention can be by adding one section of X, Y, Z respectively in the RTCP detection instruction of input lathe The calibration of the positive negative direction of three axis is displaced, and converts attitude angle coordinate function and error function to obtain the error and cutter of point of a knife point The function of posture determines number in the case where being changed without, existing RTCP detecting instrument being transformed using the calculation method in embodiment Value relationship, i.e., realization point of a knife point tolerance it is synchronous with cutter-orientation detect, be more accurately obtained knife position of cusp error and its Corresponding cutter-orientation more accurately reflects lathe dynamic accuracy.
Present specification describes the example of the embodiment of the present invention, it is not meant to that these embodiments illustrate and describe this All possible forms of invention.Those of ordinary skill in the art will understand that the embodiments described herein is to help Reader understands the principle of the present invention, it should be understood that protection scope of the present invention is not limited to such special statement and implementation Example.Those skilled in the art can according to the present invention disclosed the technical disclosures make it is various do not depart from it is of the invention real Various other specific variations and combinations of matter, these variations and combinations are still within the scope of the present invention.

Claims (10)

1. it is a kind of for five-axle number control machine tool RTCP detection error scaling method synchronous with posture, which is characterized in that including with Lower step:
S1, establish X-axis, Y-axis, Z axis triaxial coordinate axis；
S2, calibration displacement is completed to the positive direction of X-axis and negative direction respectively by five-axle number control machine tool, synchronously completes calibration posture RTCP detection, by point of a knife o'clock three axis directions testing result be added error indicate；
S3, point of a knife o'clock is obtained by S2 in the testing result of three axis directions and the relationship of error, will test the pass of result and error System is indicated with attitude angle coordinate function；
S4, point of a knife point is taken into approximation in the error of Y-axis and Z axis, value is respectively Y-axis, the error of Z axis about attitude angle Average value；
S5, by testing result with X-axis positive direction inverted order averaged, then by the value in S4 obtains knife twice in step S3 Relationship of posture and the point of a knife point of tool in Y-axis and Z axis two angle detecting result and error；
S6, repetition step S2~S5 respectively detect Y-axis and Z axis, take testing mean corresponding with axis, obtain point of a knife point Error and cutter-orientation relationship.
2. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that the positive and negative two angle detectings result expression in the S2 is respectively as follows:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, XIt surveys、YIt surveysAnd ZIt surveysRespectively tri- shaft detection of X, Y and Z as a result, tAlwaysFor the total duration of single detection, d is calibration displacement, and t is the duration for completing calibration displacement, t+And t-Respectively indicate with it is complete The later moment in time and previous moment of a bit of time are spaced at detection.
3. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that the attitude angle coordinate function expression formula of the testing result twice in the S3 is respectively as follows:
Wherein, the point of a knife point tolerance of three axis is set to ex、ey、ez, XIt surveys、YIt surveysAnd ZIt surveysRespectively tri- shaft detection of X, Y and Z as a result, I and j is respectively the variable of attitude angle, and t is the duration for completing calibration displacement, i+、j+And i-、j-It respectively indicates and completes to detect It is spaced the latter attitude angle and previous attitude angle of a bit of time.
4. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that testing result of the point of a knife point in two direction of Y-axis and Z axis is set to Y' and Z', expression formula in the S5 Are as follows:
Wherein, ey +、ey -And ez +、ez -For complete detection be spaced a bit of time latter time and the previous time be respectively y and The point of a knife point tolerance of z-axis, x are the X-direction component of testing result.
5. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that the expression formula of the posture function of cutter in the S5 are as follows:
Wherein, t is the duration for completing calibration displacement, tAlwaysFor the total duration of single detection, d is calibration displacement, and x is detection knot The X-direction component of fruit, f and g are respectively the function of angle and time.
6. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that the relationship of point of a knife point tolerance and cutter-orientation takes S2~S6 average detected result.
7. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 2 Method, which is characterized in that take approximation condition in the S4 are as follows: t+And t-T is much smaller than with completion detection interval time respectivelyAlways。
8. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that the range of the calibration displacement is 0~5mm.
9. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that in the S2~S5, the detection ordering of X-axis, Y-axis and Z axis is interchangeable.
10. a kind of error calibration side synchronous with posture for five-axle number control machine tool RTCP detection according to claim 1 Method, which is characterized in that the coordinate origin of the triaxial coordinate axis is set as the tool nose spatial position before detection.
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