CN114993146A - Coaxiality calibration method based on three-axis coordinate system - Google Patents
Coaxiality calibration method based on three-axis coordinate system Download PDFInfo
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- CN114993146A CN114993146A CN202210546899.1A CN202210546899A CN114993146A CN 114993146 A CN114993146 A CN 114993146A CN 202210546899 A CN202210546899 A CN 202210546899A CN 114993146 A CN114993146 A CN 114993146A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005381 potential energy Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention discloses a coaxiality calibration method based on a three-axis coordinate system, which comprises a bottom plate, wherein a side plate is welded on the right side of the top of the bottom plate, a sleeve is sleeved inside the side plate, five groups of clamping mechanisms which are arranged in an annular array are arranged inside the sleeve, a supporting plate is arranged on the surface of the top of the side plate, a fixed plate is welded on the left side of the top of the bottom plate, a second ruler which penetrates through and extends to the right side of the supporting plate is fixedly connected to the top end of the fixed plate, movable pipes are sleeved on outer rings of the second ruler on the left side and the right side of the side plate, connecting rods are arranged at the bottoms of the movable pipes, and movable columns are welded at one ends, close to each other, of the connecting rods. The method measures the length and diameter data of the cylinder by a simple shortcut, respectively sets the measured length and diameter as an X axis, a Y axis and a Z axis by utilizing the principle of a three-axis coordinate system, and calculates the measured data by a coaxiality error calculation formula, thereby obtaining the coaxiality error of the cylinder.
Description
Technical Field
The invention relates to the field of coaxiality calculation, in particular to a coaxiality calibration method based on a triaxial coordinate system.
Background
The most representative tool of three-axis coordinate is a three-coordinate measuring machine, and the basic principle of the three-coordinate measuring machine is to put the measured part into the allowed measuring space range, accurately measure the values of the points on the surface of the measured part at three coordinate positions in space, process the coordinate values of the points by a computer, fit the coordinate values to form measuring elements, such as a circle, a sphere, a cylinder, a cone, a curved surface, and the like, and obtain the shape, position tolerance and other geometric data thereof by a mathematical calculation method, wherein the coaxiality is the positioning tolerance, the theoretical correct position is the reference axis, and since the different points of the measured axis to the reference axis may appear in all directions in space, the tolerance band is a cylinder with the reference axis as the axis, the tolerance value is the diameter of the cylinder, the total symbol "phi" before the tolerance value, and the existing reference circle, sphere, cylinder, cone, or the like is filled with, The coaxiality detection and calibration steps of objects such as curved surfaces are complex, the final coaxiality data is easy to generate errors due to an operation process which is not convenient enough, and therefore a coaxiality calibration method based on a three-axis coordinate system is provided.
Disclosure of Invention
The invention aims to provide a coaxiality calibration method based on a three-axis coordinate system, which aims to solve the defects in the technology.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a axiality calibration method based on triaxial coordinate system, comprising a base plate, the welding of the top right side of bottom plate has the curb plate, the inside cover of curb plate is equipped with the sleeve pipe, sheathed tube inside is provided with five groups and is the fixture that the annular array was arranged, the top surface of curb plate is provided with the backup pad, the welding of the top right side of bottom plate has the fixed plate, the top fixedly connected with of fixed plate runs through and extends to the second ruler on backup pad right side, the outer lane that the second ruler is located the curb plate left and right sides all overlaps and is equipped with the movable tube, the bottom of movable tube all is provided with the connecting rod, the connecting rod all welds the movable column near side one end each other, the front and the back of bottom plate all are provided with two electric putter, all be provided with the slider on electric putter's the output shaft, the top of slider all is provided with the bracing piece, one side that the bracing piece is close to each other all overlaps and is equipped with first ruler.
As a preferable scheme of the invention, the clamping mechanism further comprises a clamping column, a spring and a placing box, wherein one end of the spring is fixedly connected with the side surface of the clamping column, the other end of the spring is fixedly connected with the inner wall of the bottom of the placing box, and spherical bodies are arranged at two ends of the clamping column.
As a preferable aspect of the present invention, the clamping column clamps and fixes the cylinder to be measured at the side where the clamping columns approach each other, and the end where the movable columns approach each other contacts both ends of the cylinder.
As a preferable scheme of the invention, supporting legs are welded at four corners of the bottom plate, and the bottom ends of the supporting legs are in the same horizontal plane.
As a preferable scheme of the present invention, fixing rods are welded on the sides of the support rods close to each other, and a C-shaped plate is arranged at one end of each fixing rod close to each other.
As a preferable scheme of the invention, scales are arranged on outer rings of the first ruler and the second ruler.
As a preferable scheme of the present invention, the top of the bottom plate is provided with four sliding grooves, and one ends of the sliding grooves, which are far away from each other, are communicated with one end of the electric push rod.
As a preferable scheme of the invention, two ends of the first ruler and the second ruler are both provided with limiting blocks.
As a preferable mode of the present invention, an electric telescopic rod is fixedly installed on the right side of the fixing plate, and an output shaft of the electric telescopic rod penetrates through the left side of the fixing plate and is fixedly connected with the right surface of the right connecting rod.
As a preferred embodiment of the present invention, the present invention further includes the following calibration method:
the method comprises the following steps: alignment of the reference surface of the workpiece: the first reference for measuring the spatial rotation is to select a working plane perpendicular to the axis of the workpiece, but not necessarily a working plane perpendicular to coordinate axes of three coordinates, align the workpiece, i.e. determine the spatial rotation of the first reference element, constrain two of three rotational degrees of freedom, e.g. rotation around X and Y axes, i.e. set up spatial tilt for positioning the workpiece, make the Z axis perpendicular to the plane, define the vector direction of the Z axis, and also determine its origin (Z is 0);
step two: alignment of the reference axis: plane rotation sets the rotation of the second reference element on a plane, generally a direction of rotating the X axis around the Z axis in the XY plane (the Y axis is perpendicular to the X axis, the Z axis is unchanged) or the origin of the third axis, that is, the degree of freedom of the third rotation is constrained, so that one axis of the three coordinates and the workpiece axis are related to each other;
step three: setting of coordinate system origin: the third fiducial element controls the freedom of movement of the X-axis or Y, Z axis to be at the position where X is 0 or Y is 0 and Z is 0, and when the required reference feature element is measured, a 3D object coordinate system can be created, which is also the user reference coordinate system defined for the measurement program.
In the technical scheme, the invention provides the following technical effects and advantages:
the method measures the length and diameter data of the cylinder by a simple shortcut, respectively sets the measured length and diameter as an X axis, a Y axis and a Z axis by utilizing the principle of a three-axis coordinate system, and calculates the measured data by a coaxiality error calculation formula, thereby obtaining the coaxiality error of the cylinder.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of an apparatus for a coaxiality calibration method based on a three-axis coordinate system according to the present invention;
FIG. 2 is a schematic cross-sectional structural diagram of a sleeve of a coaxiality calibration method based on a three-axis coordinate system according to the present invention;
FIG. 3 is a schematic diagram of a partial exploded structure of a coaxiality calibration method based on a three-axis coordinate system according to the present invention;
FIG. 4 is an exploded view of a fixture according to the present invention, which is based on a three-axis coordinate system for coaxiality calibration;
fig. 5 is a schematic operation flow diagram of a coaxiality calibration method based on a three-axis coordinate system according to the present invention.
Description of reference numerals:
1. a base plate; 2. a side plate; 3. a support plate; 4. a sleeve; 5. a clamping mechanism; 51. a clamping post; 52. a spring; 53. placing the box; 6. supporting legs; 7. a slider; 8. an electric push rod; 9. a support bar; 10. fixing the rod; 11. a C-shaped plate; 12. a first straightedge; 13. a second straightedge; 14. a movable tube; 15. a fixing plate; 16. a connecting rod; 17. a movable post; 18. an electric telescopic rod.
Detailed Description
In order to make the technical solution and implementation of the present invention more clearly explained and illustrated, several preferred embodiments for implementing the technical solution of the present invention are described below.
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, identical or similar reference numerals indicate identical or similar parts and features. The drawings are only schematic representations of the concepts and principles of the embodiments of the disclosure, and do not necessarily show specific dimensions or proportions of the various embodiments of the disclosure. While certain features of the present disclosure may be shown in exaggerated form in certain drawings to illustrate relevant details or structures of embodiments of the disclosure, the various publications, patents, and published patent specifications cited herein, the disclosures of which are hereby incorporated by reference in their entirety, will now be described in detail, in connection with the embodiments of the disclosure which are to be considered as illustrative and not restrictive, it being understood that the illustrated embodiments are merely some of the embodiments of the disclosure.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected" and "fixed" are used broadly, and for example, "connected" may be a fixed connection or a detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element through intervening elements.
Example one
Referring to the attached drawings 1-4 of the specification, the coaxiality calibration method based on the three-axis coordinate system comprises a bottom plate 1, a side plate 2 is welded on the right side of the top of the bottom plate 1, a sleeve 4 is sleeved inside the side plate 2, five groups of clamping mechanisms 5 arranged in an annular array are arranged inside the sleeve 4, a supporting plate 3 is arranged on the top surface of the side plate 2, a fixed plate 15 is welded on the left side of the top of the bottom plate 1, a second ruler 13 penetrating and extending to the right side of the supporting plate 3 is fixedly connected to the top end of the fixed plate 15, movable tubes 14 are sleeved on outer rings of the second ruler 13 on the left side and the right side of the side plate 2, connecting rods 16 are arranged at the bottoms of the movable tubes 14, movable columns 17 are welded at one ends, close to each other, of the connecting rods 16, after a cylinder is stabilized, industrial PLC terminals are connected with the electric push rods 18 and the electric push rods 8 through leads, so that the PLC terminals control the electric push rods 18 to push the movable tubes 14 on the right side to move, until the movable column 17 at the bottom of the movable tube 14 contacts with both ends of the cylinder, under the condition that the movable tube 14 and the movable column 17 are at the same level, the distance between the two movable tubes 14 is the length of the cylinder, and the measured length is marked as the Z axis in the cylinder coaxiality, two electric push rods 8 are arranged on the front and the back of the bottom plate 1, sliders 7 are arranged on the electric push rods 8, the output shafts of the electric push rods 8 are controlled to stretch through a PLC terminal, so that the sliders 7 drive the supporting rod 9 to move until the C-shaped plate 11 on the supporting rod 7 contacts with the side wall of the cylinder, under the condition that the thickness of the C-shaped plate 11 and the length of the fixed rod 10 are known in advance, the distance between the sliders 7 minus twice the thickness of the C-shaped plate 11 and the length of the fixed rod 10 is the diameter of the cylinder, and the two groups of sliders 7 are simultaneously measured, the diameters of different positions of the cylinder can be obtained, dividing two groups of diameter data by two to obtain radius data, marking the radius data as an X axis and a Y axis, calculating coaxiality error values on measuring sections according to the data of the X axis, the Y axis and the Z axis, namely delta is Mmax-Mmin, and taking the maximum value of the coaxiality error values measured on each section as the coaxiality error of the part;
meanwhile, the clamping mechanism 5 further comprises a clamping column 51, a spring 52 and a placing box 53, wherein one end of the spring 52 is fixedly connected with the side surface of the clamping column 51, the other end of the spring is fixedly connected with the inner wall of the bottom of the placing box 53, both ends of the clamping column 51 are provided with spherical bodies, the same end of each cylindrical body is in contact with the spherical bodies at both ends of the clamping column 51, the clamping column 51 is outwards extruded by virtue of the spherical bodies at both ends of the clamping column 51, so that the clamping column 51 is outwards stretched, the spring 52 contracted in the placing box 53 is extruded, the cylindrical bodies are clamped by virtue of the elastic potential energy of the spring 52, the cylinders to be measured are clamped and fixed at the mutually close sides of the clamping columns 51, the mutually close ends of the movable columns 17 are in contact with both ends of the cylinders, supporting legs 6 are welded at four corners of the bottom plate 1, the bottom ends of the supporting legs 6 are in the same horizontal plane, and fixing rods 10 are welded at the mutually close sides of the supporting rods 9, the one end that dead lever 10 is close to each other all is provided with C shaped plate 11, and the outer lane of first ruler 12 and second ruler 13 all is provided with the scale, and four spouts have been seted up at the top of bottom plate 1, and the one end that the spout was kept away from each other communicates with electric putter 8's one end each other, and the both ends of first ruler 12 and second ruler 13 all are provided with the stopper.
Example two
Based on the first embodiment, the difference is that a common axis method is adopted, and referring to the attached drawings 1-4 in the specification, a coaxiality calibration method based on a three-axis coordinate system is provided:
the industrial PLC terminal is connected with an electric push rod 18 and an electric push rod 8 through conducting wires after the cylinder is stabilized, so that the electric push rod 18 is controlled by the PLC terminal to push the two movable tubes 14 on the right side to move until the movable columns 17 at the bottoms of the movable tubes 14 are contacted with the two ends of the cylinder, under the condition that the movable pipes 14 and the movable columns 17 are parallel and level, the distance between the two movable pipes 14 is the length of a cylinder, the measured length is marked as a Z axis in the coaxiality of the cylinder, the front surface and the back surface of the bottom plate 1 are provided with two electric push rods 8, the electric push rods 8 are provided with sliders 7, the output shafts of the electric push rods 8 are controlled to stretch and retract through a PLC terminal, the sliders 7 drive the supporting rods 9 to move until C-shaped plates 11 on the supporting rods 7 are contacted with the side walls of the cylinder, under the condition that the thickness of the C-shaped plates 11 and the length of the fixed rods 10 are known in advance, the distance between the sliders 7 is subtracted by twice the thickness of the C-shaped plates 11 and the length of the fixed rods 10 to obtain the diameter of the cylinder, the two groups of sliders 7 are simultaneously measured to obtain the diameter of the cylinder, circles with a plurality of cross sections are measured on the measured element and the reference element, and the centers of the circles are constructed into a 3D straight line, as a common axis, the diameters of the circles can be different, then the coaxiality of the reference cylinder and the measured cylinder to the common axis is respectively calculated, and the maximum value of the coaxiality is taken as the coaxiality of the part;
the clamping mechanism 5 further comprises a clamping column 51, a spring 52 and a placing box 53, wherein one end of the spring 52 is fixedly connected with the side surface of the clamping column 51, the other end of the spring is fixedly connected with the inner wall of the bottom of the placing box 53, both ends of the clamping column 51 are provided with spherical bodies, the same end of each cylindrical body is in contact with the spherical bodies at both ends of the clamping column 51, the clamping column 51 is outwards extruded by means of the spherical bodies at both ends of the clamping column 51, so that the clamping column 51 is outwards stretched and pressed to contract the spring 52 in the placing box 53, the cylindrical bodies are clamped by means of the elastic potential energy of the spring 52, the cylinders to be measured are clamped and fixed at the mutually close sides of the clamping columns 51, the mutually close ends of the movable columns 17 are in contact with both ends of the cylindrical bodies, supporting legs 6 are welded at four corners of the bottom plate 1, the bottom ends of the supporting legs 6 are in the same horizontal plane, and fixing rods 10 are welded at the mutually close sides of the supporting rods 9, the one end that dead lever 10 is close to each other all is provided with C shaped plate 11, and the outer lane of first ruler 12 and second ruler 13 all is provided with the scale, and four spouts have been seted up at the top of bottom plate 1, and the one end that the spout was kept away from each other communicates with electric putter 8's one end each other, and the both ends of first ruler 12 and second ruler 13 all are provided with the stopper.
The working principle and the concrete explanation of the invention refer to the attached drawings 1-5 of the specification:
firstly, a cylinder to be detected passes through the inside of the sleeve 4, one end of the cylinder is in contact with spherical bodies at two ends of a clamping column 51 while passing through, the clamping column 51 is outwards pressed by the spherical bodies at two ends of the clamping column 51, so that the clamping column 51 is outwards stretched and presses a spring 52 contracted in a placing box 53, the cylinder is clamped by virtue of the elastic potential energy of the spring 52, after the cylinder is stabilized, a movable pipe 14 on the outer ring of a second ruler 13 is moved until a movable column 17 at the bottom of the movable pipe 14 is in contact with two ends of the cylinder, under the condition that the movable pipe 14 and the movable column 17 are level, the distance between the two movable pipes 14 is the length of the cylinder, and the measured length is marked as a Z axis in the coaxiality of the cylinder;
and then sliding the sliders 7 to enable the C-shaped plates 11 between the adjacent sliders 7 to contact the cylinder under the traction of the fixing rod 10, wherein the distance between the sliders 7 is obtained, under the condition that the thickness of the C-shaped plates 11 and the length of the fixing rod 10 are known in advance, the diameter of the cylinder is obtained by subtracting twice the thickness of the C-shaped plates 11 and the length of the fixing rod 10 from the distance between the sliders 7, the diameters of the cylinder at different positions can be obtained by simultaneously measuring the two groups of sliders 7, radius data are obtained after dividing the two groups of diameter data by two, the radius data are marked as an X axis and a Y axis, and coaxiality error values on the measuring sections are calculated according to the data of the X axis, the Y axis and the Z axis, namely delta is Mmax-Mmin, and the maximum value of the coaxiality errors measured on each section is taken as the coaxiality error of the part.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the invention.
Claims (10)
1. A coaxiality calibration method based on a three-axis coordinate system comprises a bottom plate (1), and is characterized in that: the clamping device is characterized in that a side plate (2) is welded on the right side of the top of a bottom plate (1), a sleeve (4) is sleeved inside the side plate (2), five groups of clamping mechanisms (5) arranged in an annular array are arranged inside the sleeve (4), a supporting plate (3) is arranged on the surface of the top of the side plate (2), a fixed plate (15) is welded on the right side of the top of the bottom plate (1), a second ruler (13) penetrating through and extending to the right side of the supporting plate (3) is fixedly connected to the top end of the fixed plate (15), movable pipes (14) are sleeved on outer rings of the second ruler (13) on the left side and the right side of the side plate (2), connecting rods (16) are arranged at the bottoms of the movable pipes (14), movable columns (17) are welded at one ends, close to each other, two electric push rods (8) are arranged on the front surface and the back surface of the bottom plate (1), and sliders (7) are arranged on output shafts of the electric push rods (8), the top of slider (7) all is provided with bracing piece (9), and one side that bracing piece (9) are close to each other all overlaps and is equipped with first ruler (12).
2. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: the clamping mechanism (5) further comprises a clamping column (51), a spring (52) and a placing box (53), wherein one end of the spring (52) is fixedly connected with the side face of the clamping column (51), the other end of the spring is fixedly connected with the inner wall of the bottom of the placing box (53), and spherical bodies are arranged at two ends of the clamping column (51).
3. The coaxiality calibration method according to claim 2, wherein the coaxiality calibration method comprises the following steps: the clamping column (51) is clamped and fixed on one side close to each other to form a cylinder to be measured, and one end, close to each other, of the movable column (17) is in contact with two ends of the cylinder.
4. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: supporting legs (6) are welded at four corners of the bottom plate (1), and the bottom ends of the supporting legs (6) are on the same horizontal plane.
5. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: and fixing rods (10) are welded on one sides of the supporting rods (9) close to each other, and C-shaped plates (11) are arranged at one ends of the fixing rods (10) close to each other.
6. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: the outer rings of the first ruler (12) and the second ruler (13) are provided with scales.
7. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: four sliding grooves are formed in the top of the bottom plate (1), and one ends, far away from each other, of the sliding grooves are communicated with one end of the electric push rod (8).
8. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: and limiting blocks are arranged at two ends of the first ruler (12) and the second ruler (13).
9. The coaxiality calibration method according to claim 1, wherein the coaxiality calibration method comprises the following steps: an electric telescopic rod (18) is fixedly mounted on the right side of the fixing plate (15), and an output shaft of the electric telescopic rod (18) penetrates through the left side of the fixing plate (15) and is fixedly connected with the right surface of the connecting rod (16).
10. The coaxiality calibration method based on the triaxial coordinate system according to any one of claims 1 to 9, wherein: the method also comprises the following calibration methods:
the method comprises the following steps: alignment of the reference surface of the workpiece: the first reference for measuring the spatial rotation is to select a working plane perpendicular to the axis of the workpiece, not necessarily a working plane perpendicular to coordinate axes of three coordinates, align the workpiece, i.e. determine the spatial rotation of the first reference element, constrain two of three rotational degrees of freedom, e.g. rotation around X and Y axes, i.e. position the spatial tilt of the workpiece, make the Z axis perpendicular to the plane, define the vector direction of the Z axis, and also determine its origin (Z is 0);
step two: alignment of the reference axis: plane rotation sets the rotation of the second reference element on a plane, generally the direction of rotating the X axis around the Z axis in the XY plane (the Y axis is perpendicular to the X axis, the Z axis is unchanged) or the origin of the third axis, i.e. the degree of freedom of the third rotation is constrained, so that one axis of the three coordinates is related to the axis of the workpiece;
step three: setting of coordinate system origin: the third fiducial element controls the degree of freedom of movement of the X-axis or Y, Z-axis to be at a position where X is 0 or Y is 0 and Z is 0, and when the required reference feature elements are measured, a 3D object coordinate system can be created, which is also the user reference coordinate system defined for the measurement procedure.
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| CN202210546899.1A CN114993146A (en) | 2022-05-19 | 2022-05-19 | Coaxiality calibration method based on three-axis coordinate system |
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| CN202210546899.1A CN114993146A (en) | 2022-05-19 | 2022-05-19 | Coaxiality calibration method based on three-axis coordinate system |
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