CN117182507B - Compensation method for installation error of A axis of numerical control machine tool - Google Patents
Compensation method for installation error of A axis of numerical control machine tool Download PDFInfo
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Abstract
The invention discloses a compensation method for an installation error of an A axis of a numerical control machine tool, which comprises the following steps: s100, setting a measuring tool and a measuring instrument; s200, controlling the A axis to swing by different anglesAnd at different angles on axis AUnder the condition of driving the B shaft to move, controlling the measuring instrument to butt against the measuring tool, and according to the swinging angle of the A shaft each timeAt a corresponding angleThe measuring instrument is abutted with the movement data of the measuring tool to obtain the installation error of the axes of the A shaft and the B shaftAnd the distance from the measuring instrument to the axis of the A shaft along the Y directionThe method comprises the steps of carrying out a first treatment on the surface of the S300 obtains the compensation amount. The invention can conveniently and rapidly calculate the installation error of the B axis relative to the A axis, can improve the machining precision, is suitable for numerical control machine tools with various shafting arrangements, and is suitable for popularization and use.
Description
Technical Field
The invention relates to the technical field of numerical control machine tool spindle precision compensation, in particular to a method for compensating installation errors of an A axis of a numerical control machine tool.
Background
In the design of a numerically controlled machine tool, the rotation center of the a axis (tool rest rotation axis) is usually coplanar with the rotation center of the B axis (tool rotation axis), but in the actual production and assembly process, a certain installation error (eccentricity) exists between the rotation center of the a axis and the rotation center of the B axis, so that a certain error exists between the actual position and the theoretical position of the tool when the a axis rotates.
In the prior art, for measuring the installation error of the axis a of a numerical control machine tool, after the outer protection of the machine tool is removed, a mounting surface with higher precision is searched on the machine tool as a reference surface, and the distances from the rotation center of the axis a and the rotation center of the axis B to the reference surface are respectively measured, so that the installation error of the axis a is converted. The method is time-consuming, labor-consuming, low in precision and unfavorable for periodic correction of the precision of the machine tool.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a compensation method for the installation error of the A axis of the numerical control machine tool, which can conveniently and accurately measure the installation error of the A axis of the numerical control machine tool and correspondingly compensate, thereby improving the machining precision and being suitable for popularization and use.
The compensation method for the installation error of the A axis of the numerical control machine tool comprises the following steps:
s100, setting a measuring tool on a numerical control machine tool and setting a measuring instrument on a B axis;
s200, controlling the A axis to swing by different anglesAnd is at different angles +.>The B axis is driven to move along the Y direction of the self axial direction, so that the measuring instrument is controlled to move along the Y direction until the measuring tool is abutted, and the swinging angle of the A axis is +.>At a corresponding angle +>The measuring instrument is abutted against the movement data of the measuring tool to obtain the installation error of the axes of the A axis and the B axis>And the distance from the measuring instrument to the axis of the A shaft in the Y direction>；
S300, according to the installation error of the A axisAnd obtaining the compensation quantity.
The compensation method for the installation error of the A axis of the numerical control machine tool at least has the following beneficial effects:
the method for compensating the installation error of the A axis of the numerical control machine tool comprises the steps that firstly, a measuring instrument is arranged on a B axis, then, the swinging angle of the A axis and the walking distance when the measuring instrument moves to a butt joint measuring tool along the Y direction under each angle are controlled, and because the axis of the A axis and the position of the measuring tool are fixed in the swinging process, the relative distance between the measuring instrument moving along the Y direction before and after the swinging angle and the swinging angle form a certain geometric relationship, and the installation error of the A axis and the B axis can be obtained by analyzing the geometric relationshipAnd the distance from the measuring instrument to the axis of the A shaft in the Y direction>And performing coordinate compensation based on the installation error. According to the invention, only a single measuring instrument is required to be arranged, and the A-axis swing is controlled, so that the required result can be automatically calculated through the system of the numerical control machine tool, the method is convenient and quick, the calculation result is accurate and reliable, the machining precision can be improved, and the method is suitable for numerical control machine tools with various shafting arrangements and is suitable for popularization and use. It will be appreciated that the measuring instrument may be replaced when the pin has been provided on the B-axis of the numerically controlled machine tool.
According to the inventionIn some embodiments, in step S200, movement measurements at least at three angles are made, so that at least three movement data are acquired, through the value of the angle of oscillationAnd the relative distance of the corresponding movement of the measuring instrument in the Y direction is used for establishing the installation error of the axes of the A axis and the B axis>And the distance from the measuring instrument to the axis of the A shaft in the Y direction>And calculating and solving the binary once equation set of (2).
According to some embodiments of the invention, step S200 specifically includes:
s201, the angle of the A axis is the initial angleWhen the measuring instrument is controlled to move to butt joint the measuring tool along the Y direction, the Y-axis coordinate value Y= = -is recorded at the moment>；
S202, controlling the swing angle of the A axisControlling the measuring instrument to move to butt joint the measuring tool along the Y direction, and recording Y-axis coordinate values Y= = -at the moment>；
S203, controlling the swing angle of the A axisControlling the measuring instrument to move to butt joint the measuring tool along the Y direction, and recording Y-axis coordinate values Y= = -at the moment>；
S204, calculating three Y-axis movementsThe relative distance of movement, expressed as、/>Wherein->The expression is from angle->Swing to->After that, the measuring instrument is moved a relative distance in the Y-direction,/->The expression is from angle->Swing to->Then, the relative distance of the movement of the measuring instrument in the Y direction;
s205, build upAnd->、/>、/>、/>Is->And->、/>、/>、/>And solving the binary once equation system of (2)、/>。
According to some embodiments of the invention, the A-axis initial angle is controlled=0, the expression of the binary system of primary equations is:
，
obtaining、/>The expression of (2) is:
，
。
according to some embodiments of the invention, step S300 includes original coordinate preserving compensation, specifically including:
s301, collecting the rotation angle of A shaft before compensationAnd coordinates in the Y-direction and the vertical Z-direction（/>，/>）；
S302, reading the next rotation angle of the A shaftAnd the compensated coordinates are set to (+)>，/>）；
S303, calculatingResulting positioning error in Y-direction and Z-direction>、/>The concrete expression is as follows:
，
s304, the rotation angle of the A axisThe coordinates after compensation are expressed as:
。
according to some embodiments of the invention, the measuring instrument is controlled to retract to a safe position in the Y-direction prior to each control of the a-axis oscillation.
According to some embodiments of the invention, the measuring instrument is set as a dial indicator, and the trigger condition of the measuring instrument abutting against the measuring tool is that the dial indicator reads 0.
According to some embodiments of the invention, the measuring instrument interfaces with the same end face of the gauge each time.
According to some embodiments of the invention, the numerically controlled machine tool includes:
a bed body;
the upright post is arranged on the lathe bed;
the Z-axis moving guide rail can be movably arranged on the upright post along the vertical Z direction, and the A-axis is horizontally arranged at the moving end of the Z-axis moving guide rail;
and the tool rest is movably arranged on the A axis along the Y direction, and the B axis is arranged on the tool rest.
According to some embodiments of the invention, the B-axis is provided with a tool, the tool holder is provided with a spindle motor at one end of the B-axis, and the measuring instrument is provided at an end of the tool remote from the spindle motor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a numerical control machine tool to which the present invention is applied;
FIG. 2 is another view of the numerically controlled machine tool of FIG. 1;
FIG. 3 is a schematic view showing a positional relationship between the swing angle of the A-axis and the movement of the measuring instrument in the Y-direction to the docking gauge.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the design of a numerically controlled machine tool, the rotation center of the a axis (tool rest rotation axis) is usually coplanar with the rotation center of the B axis (tool rotation axis), but in the actual production and assembly process, a certain installation error (eccentricity) exists between the rotation center of the a axis and the rotation center of the B axis, so that a certain error exists between the actual position and the theoretical position of the tool when the a axis rotates.
In the prior art, for measuring the installation error of the axis a of a numerical control machine tool, after the outer protection of the machine tool is removed, a mounting surface with higher precision is searched on the machine tool as a reference surface, and the distances from the rotation center of the axis a and the rotation center of the axis B to the reference surface are respectively measured, so that the installation error of the axis a is converted. The method is time-consuming, labor-consuming, low in precision and unfavorable for periodic correction of the precision of the machine tool.
For this reason, referring to fig. 1 to 3, an embodiment of the present invention provides a method for compensating a mounting error of an a-axis of a numerically-controlled machine tool, which mainly includes the following steps:
s100, firstly, setting a measuring tool 103 on a numerical control machine tool, and setting a measuring instrument 107 on a B axis;
s200, controlling the A axis to swing by different anglesAnd is at different angles +.>In the case of driving the B-axis to move in the Y-direction of the own axis, thereby controlling the measuring instrument 107 to move in the Y-direction to the butt-measuring tool 103 according to the swing angle +.>At a corresponding angle +>The lower measuring instrument 107 moves the movement data of the butt-joint measuring tool 103 along the Y direction to obtain the installation error of the axes of the A axis and the B axis>And distance +.A from the measuring instrument 107 to the axis of the A-axis along the Y-direction>；
S300, according to the installation error of the A axisAnd obtaining the compensation amount.
In the above steps, the gauge 103 may be a gauge rod or a gauge block, and only needs to provide a measured reference with high precision for the measuring instrument 107, so as to ensure that the position of the butt joint of each time the measuring instrument 107 moves is fixed. Because the measuring tool 103 is a measured reference with high precision and fixed relative to the three-dimensional coordinate of the numerical control machine tool, the actual installation position and the installation form of the measuring tool can be flexibly adjusted according to the actual structure of the numerical control machine tool. Such as directly on the bed 100 of a numerically controlled machine tool. For example, when the column 101 capable of moving along the linear axis or rotating around the rotation axis is provided on the bed 100, and the axes a and B are provided on the column 101, the measuring tool 103 may be provided on the column 101, so that the measurement in step S200 is performedIn the process of calculating the quantity, no matter how much the A axis rotates and how much the measuring instrument 107 moves along the Y direction, the measuring tool 103 is always fixed relative to the axis of the A axis, so that the variable is ensured to be only the swing angle of the A axis and the movement data of the measuring instrument 107 along the Y direction under the corresponding swing angle. The gauge 103 may be fixed or may be configured to swing so as to swing out of the machining area of the numerically controlled machine tool during non-measurement phases. By adopting the compensation method for the installation error of the A axis of the numerical control machine tool, firstly, arranging the measuring instrument 107 on the B axis, then, controlling the swinging angle of the A axis and the walking distance when the measuring instrument 107 moves to the butt-joint measuring tool 103 along the Y direction under each angle, and analyzing the geometrical relationship to obtain the installation error of the A axis and the B axis because the axial center of the A axis and the position of the measuring tool 103 are fixed in the swinging process, the relative distance between the measuring instrument 107 moving along the Y direction before and after the swinging angle and the swinging angle form a certain geometrical relationship with the swinging angleAnd distance +.A from the measuring instrument 107 to the axis of the A-axis along the Y-direction>And analyzing the positioning error based on the installation error and performing coordinate compensation. According to the invention, only a single measuring instrument 107 is required to be arranged, and the A-axis swing is controlled, so that the required result can be automatically calculated through the system of the numerical control machine tool, the method is convenient and quick, the calculation result is accurate and reliable, the machining precision can be improved, and the method is suitable for the numerical control machine tools with various shafting arrangements and is suitable for popularization and use. It will be appreciated that the measuring instrument 107 may be replaced when a stylus has been provided on the B-axis of the numerically controlled machine tool.
In some embodiments of the present invention, in step S200, movement measurements at least at three angles are performed, so that movement data is acquired at least three times, through the angle values of the wobbleAnd the relative distance of the corresponding movement of the measuring instrument 107 in the Y direction to establish the A-axisMounting error with axis of B-axis>And distance +.A from the measuring instrument 107 to the axis of the A-axis along the Y-direction>And calculating and solving the binary once equation set of (2). Preferably, in step S200, only movement measurements at three angles may be performed, so that a system of equations comprising two equations is established for parsing to ensure the fastest measurement calculation speed.
In some embodiments of the present invention, step S200 specifically includes:
s201, the angle of the A axis is the initial angleAt this time, the measuring instrument 107 is controlled to move to the butting gauge 103 in the Y direction, and the Y-axis coordinate value y= = -at this time is recorded>；
S202, firstly controlling the measuring instrument 107 to retract to a safe position along the Y direction, and then controlling the swing angle of the A axisThen, the measuring instrument 107 is controlled to move to the butt-joint gauge 103 along the Y direction, and the Y-axis coordinate value y= = -at this time is recorded>；
S203, firstly controlling the measuring instrument 107 to retract to the safe position along the Y direction, and then controlling the swing angle of the A axisThen, the measuring instrument 107 is controlled to move to the butt-joint gauge 103 along the Y direction, and the Y-axis coordinate value y= = -at this time is recorded>；
S204, calculating the relative distance of three Y-axis movements, which is expressed as、/>Wherein->The expression is from angle->Swing to->The relative distance of the rear measuring instrument 107 moving in the Y direction, is->The expression is from angle->Swing to->The relative distance the rear gauge 107 moves in the Y direction;
s205, build upAnd->、/>、/>、/>Is->And->、/>、/>、/>And solving the binary once equation system of (2)、/>。
For ease of calculation, in some embodiments of the invention, the A-axis initial angle is controlled=0, the expression of the binary system of primary equations is:
，
obtaining、/>The expression of (2) is:
，
。
wherein the method comprises the steps of、/>、/>、/>Are all known data, so that the installation error of the axle centers of the A axle and the B axle can be rapidly calculatedAnd distance +.A from the measuring instrument 107 to the axis of the A-axis along the Y-direction>. It will be appreciated that in +.>In case of not 0, in the binary system of equations +.>、/>In the expression of>、/>All need to be subjected to certain conversion calculation, and replaced by +.>、The concrete expression is as follows:
，
。
step S300 can be divided into the two cases of original coordinate holding compensation of the tool (i.e., the case of angular rotation of the tool but the coordinate holding in place) and motion compensation of the next step (i.e., the case of change in the tool coordinate). In the actual processing of numerically controlled spiral bevel gears, the main facing situation is that the tool rotates in the original coordinate position, i.e. the a-axis rotates but the coordinates remain fixed, belonging to the original coordinate holding compensation of the tool, in which case S300 specifically comprises:
s301, collecting the rotation angle of the A shaft of the cutter before compensationAnd the coordinates in the Y-direction and in the vertical Z-direction (++>，/>）；
S302, reading the next rotation angle of the A shaftAnd the coordinates of the tool after compensation are set as (++>，/>）；
S303, calculatingResulting positioning error in Y-direction and Z-direction>、/>The concrete expression is as follows:
，
s304, the rotation angle of the A axisThe coordinates after compensation are expressed as follows:
。
after the compensation is calculated, corresponding movement and rotation of the numerical control machine tool are carried out according to the compensated coordinates, so that the original coordinate position of the tool is ensured, and further the machining precision and quality are ensured.
In some embodiments of the present invention, the measuring instrument 107 is configured as a dial indicator, and the trigger condition of the measuring instrument 107 against the gauge 103 is a dial indicator reading of 0. By controlling the dial indicator to contact the gauge 103 each time until the reading is 0, the consistency of the conditions of each time moving along the Y direction can be ensured, and the accuracy and reliability of the calculation result can be further ensured.
It can be appreciated that, in the process of moving the contact gauge 103 to the reading of 0 each time, the gauge abuts against the same end face of the gauge 103 each time, so as to ensure the accuracy of the result.
Referring to fig. 1 and 2, in some embodiments of the present invention, a numerical control machine is provided with a bed 100, a column 101, a Z-axis moving rail 102, an a-axis, a tool post 104, a B-axis, a tool 106, and a spindle motor 105, wherein the column 101 is movably and adjustably mounted on the bed 100 in the X-direction. The Z-axis moving rail 102 is vertically disposed at a side of the column 101. The a-axis is horizontally disposed at the moving end of the Z-axis moving rail 102. The tool post 104 is provided at an end of the a-axis so as to be movable in the Y-direction, and the B-axis is provided on the tool post 104. The cutter 106 is provided on the B axis, and the spindle motor 105 is provided at one end of the B axis. The gauge 103 is disposed on the bed 100, and the dial gauge is disposed at an end of the B-axis away from the spindle motor 105.
The specific method of the measuring and compensating process in the actual working process is as follows:
s100, a measuring tool 103 is arranged on the lathe bed 100, and a dial indicator is arranged at one end, far away from a spindle motor 105, of a cutter 106 on a B axis;
s201, controlling the initial angle of the A axis(the angle value is realized by a control system of the numerical control machine tool), at the moment, the Y direction is horizontal, the dial indicator is controlled to move to the butt-joint measuring tool 103 along the Y direction until the reading is 0, and the Y-axis coordinate value Y= -in the numerical control machine tool system at the moment is recorded>=64.2358mm；
S202, firstly controlling the dial indicator to retract to a safe position along the Y direction, and then controlling the swing angle of the A axisThen, the dial indicator is controlled to move to the same end face of the butt joint measuring tool 103 along the Y direction until the reading is 0, and the Y-axis coordinate value Y= = -in the numerical control machine tool system at the moment is recorded>=69.9592mm；
S203, firstly controlling the measuring instrument 107 to retract to the safe position along the Y direction, and then controlling the swing angle of the A axisThen, the dial indicator is controlled to move to the same end face of the butt joint measuring tool 103 along the Y direction until the reading is 0, and the Y-axis coordinate value Y= = -in the numerical control machine tool system at the moment is recorded>=78.0466mm；
S204, calculating the relative distance of three Y-axis movements, which is expressed as:
=69.9592-64.2358=5.7234mm，
=78.0466-64.2358=13.8103mm，
wherein the method comprises the steps ofThe expression is from angle->Swing to->The relative distance of the rear measuring instrument 107 moving in the Y direction, is->The expression is from angle->Swing to->The relative distance the rear gauge 107 moves in the Y direction;
s205, build upAnd->、/>、/>、/>Is->And->、/>、/>、/>The binary system of equations of (2) is as follows:
，
substituting the above data into the above expression yields the following expression:
，
obtained by solving、/>The expression of (2) is as follows:
，
，
substituting data yields the following two expressions and results:
，
；
s301, collecting the rotation angle of the A axis of the cutter 106 before compensation=2°, and the coordinates (++l) of the tool 106 in the Y-direction and the vertical Z-direction in the numerical control machine at this rotation angle>，/>) Specifically (40, 30);
s302, reading the next rotation angle of the A shaft=15°, set the a-axis to rotate to +>The tool 106 maintains the compensated coordinates of the original coordinates as (++15°>，/>）；
S303, calculatingResulting positioning error in Y-direction and Z-direction>、/>The concrete expression is as follows:
，
substituting data yields the following results:
；
s304, the rotation angle of the A axisThe coordinates after compensation are expressed as follows:
，
after substituting the data for compensation, the compensated coordinates are (40.0113, 29.9983), that is, when the a axis is switched from 2 ° to 15 ° under the condition that the tool 106 needs to be kept at the original position, the Y axis coordinates and the Z axis coordinates corresponding to the numerically controlled machine tool system need to be switched from (40, 30) to (40.0113, 29.9983). After the compensation is calculated, corresponding movement and rotation of the numerical control machine tool are carried out according to the compensated coordinates, and machining precision and quality are ensured.
It should be noted that, since the switching of the a axis from 2 ° to 15 ° is a continuous rotation process, the coordinate adjustment of the tool 106 needs to be performed in real time based on the foregoing calculation method to ensure the machining accuracy and quality.
It will be appreciated that in the event of a further step of motion compensation, i.e. the tool 106 position needs to be moved. In this case S300 specifically includes:
s3001, reading the A-axis rotation angle of the next stepAnd the corresponding coordinates (Y0, Z0) to which the tool 106 needs to be moved;
s3002, calculating the rotation angleDown->Resulting positioning error in Y-direction and Z-direction>、/>The concrete expression is as follows:
；
s3003, compensating the corresponding coordinates to which the tool 106 needs to be moved, denoted (Y1, Z1), wherein,
；
s3004, the movement control of the tool 106 is performed based on the compensated coordinates.
As can be appreciated in connection with fig. 1, the center of rotation of the B axis will be offset downwardly with respect to the center of rotation of the a axis, due to gravity, at the corresponding fit gap, and therefore in the above calculations,negative values are used. If the situation is to be in the other case,、/>the positive or negative value may be set according to the actual situation, and is not limited to the positive or negative of the above expression.
It is noted that, due to the rotation of the A axis toIs a continuous process, so if it is an initial stage, the tool 106 is directly controlled to move to the compensated coordinates.
In summary, by adopting the method for compensating the installation error of the axis A of the numerical control machine tool, the installation error of the axis B rotation center and the axis A rotation center can be measured and calculated rapidly and accurately, accurate compensation is realized on the coordinates of the cutter 106, and the processing quality is ensured. The measuring instrument 107 and the gauge 103 are removed after the measurement of the installation error is completed.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (4)
1. A compensation method for the installation error of an A axis of a numerical control machine tool is characterized by comprising the following steps:
s100, setting a measuring tool on a numerical control machine tool and setting a measuring instrument on a B axis;
s200, controlling the A axis to swing by different anglesAnd is at different angles +.>The B axis is driven to move along the Y direction of the self axial direction, thereby controlling the measuring instrument to move along the Y direction to butt against the measuring tool, according to the swinging angle of the A axis every time +>At a corresponding angle +>The measuring instrument is abutted against the movement data of the measuring tool to obtain the installation error of the axes of the A axis and the B axis>And the distance from the measuring instrument to the axis of the A axis along the Y direction>；
S300, according to the installation error of the A axisObtaining a compensation amount;
in step S200, movement measurements at least at three angles are performed, so that movement data is acquired at least three times, by the angle value of the wobbleAnd the relative distance of the corresponding movement of the measuring instrument in the Y direction is used for establishing the installation error of the axes of the A axis and the B axis>And the distance from the measuring instrument to the axis of the A axis along the Y direction>Binary once equation set of (2) and calculating and solving;
step S200 includes:
s201, the angle of the A axis is the initial angleWhen the measuring instrument is controlled to move along the Y direction until the measuring tool is in butt joint, the coordinate value Y= = -of the Y axis at the moment is recorded>；
S202, controlling the swing angle of the A axisControlling the measuring instrument to move along the Y direction until the measuring tool is abutted, and recording Y-axis coordinate values Y= = -in the moment>；
S203, controlling the swing angle of the A axisControlling the measuring instrument to move along the Y direction until the measuring tool is abutted, and recording Y-axis coordinate values Y= = -in the moment>；
S204, calculating the relative distance of three Y-axis movements, which is expressed as、/>Wherein->The expression is from angle->Swing to->After that, the relative distance the measuring instrument moves in the Y direction, < >>The expression is from angle->Swing to->Then, the relative distance that the measuring instrument moves in the Y direction;
s205, build upAnd->、/>、/>、/>Is->And->、/>、/>、/>Binary system of equations of (2) and solving +.>、/>；
Control of the initial angle of the A-axis=0, the expression of the binary system of primary equations is:
，
obtaining、/>The expression of (2) is:
，
；
step S300 includes original coordinate preserving compensation:
s301, collecting the rotation angle of A shaft before compensationAnd the coordinates of the Y-direction and the vertical Z-direction (/ -direction)>，/>）；
S302, reading the next rotation angle of the A shaftAnd the compensated coordinates are set to (+)>，/>）；
S303, calculatingResulting positioning error +.>、/>The expression is as follows:
，
s304, the rotation angle of the A axisThe coordinates after compensation are expressed as:
。
2. the method for compensating for a mounting error of an a-axis of a numerical control machine tool according to claim 1, wherein the measuring instrument is controlled to retract to a safe position in the Y-direction before each control of the a-axis swing.
3. The method for compensating for the installation error of the a axis of the numerical control machine tool according to claim 1, wherein the measuring instrument is set as a dial indicator, and the triggering condition of the measuring instrument for abutting against the measuring tool is that the dial indicator reads 0.
4. A method of compensating for a mounting error of an a-axis of a numerically-controlled machine tool according to claim 3, wherein the measuring instrument is abutted against the same end face of the gauge each time.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102896555A (en) * | 2011-07-29 | 2013-01-30 | 罗伯特·博世有限公司 | Method for controlling machine with freely defined coupling between actuating devices |
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| US11181884B2 (en) * | 2020-04-21 | 2021-11-23 | Hefei University Of Technology | Method for synchronized multi-axis motion control of flexible electronic gearbox |
| CN112975469A (en) * | 2021-04-12 | 2021-06-18 | 重庆大学 | Worm gear female machine |
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| CN103817380A (en) * | 2014-03-10 | 2014-05-28 | 重庆大学 | Synchronizing shaft error compensation method of numerical control gear manufacturing machine tool |
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| CN209343185U (en) * | 2018-12-26 | 2019-09-03 | 哈尔滨理工大学 | A kind of five-axis machine tool turntable geometric error once mounting detection device |
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