CN114370817B - Device and method for calibrating club instrument - Google Patents
Device and method for calibrating club instrument Download PDFInfo
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- CN114370817B CN114370817B CN202210033918.0A CN202210033918A CN114370817B CN 114370817 B CN114370817 B CN 114370817B CN 202210033918 A CN202210033918 A CN 202210033918A CN 114370817 B CN114370817 B CN 114370817B
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
Abstract
The invention discloses a device and a method for calibrating a club instrument, which can reduce measurement errors, improve the space amount of calibrated data samples and realize accurate calibration of club instruments with different lengths. The device comprises: the laser interferometer, the first mirror group, the guide rail, the moving platform, the second mirror group, the control box, the first installation group and the second installation group are sequentially arranged on the top surface of the reference platform along the first direction; the first mirror group and the second installation group are fixedly arranged relative to the reference platform in the first direction; the second lens group and the first mounting group are fixedly arranged relative to the mobile platform in the first direction; the first lens group, the second lens group, the first mounting group and the second mounting group are all arranged to be movable along the second direction and fixed after being moved to the set position, so that the first mounting cup, the second mounting cup, the spectroscope of the first lens group and the reflecting mirror of the second lens group are positioned on the same straight line light path of laser emitted by the laser interferometer.
Description
Technical Field
The invention relates to the technical field of club instrument calibration, in particular to a device and a method for calibrating a club instrument.
Background
The ball arm instrument is a precise measuring instrument for calibrating the positioning error of a machine tool, and as shown in fig. 1, the ball arm instrument is generally composed of a displacement sensor and standard balls at two ends, and is further provided with auxiliary measuring components such as a ball seat (comprising a center seat and a tool cup). One end of the cue stick may be stretched or compressed along the axis of the cue stick and may be capable of measuring the change in radius of the cue stick as it rotates about a fixed point. The effective working range of the ball arm instrument is mostly (0 to +/-1) mm, and the ball arm instrument is mainly used for measuring the radius variation of a main shaft head of a machine tool when rotating around one point of a space, so that the overall measurement value of positioning accuracy, such as roundness, roundness deviation and other data, can be calculated, and the machine tool fault can be diagnosed by analyzing the data.
Because the environment of a processing workshop where a machine tool is located can be severe and the factors influencing the performance of the ball arm instrument are more, the ball arm instrument needs to be calibrated regularly to ensure that the measurement data of the ball arm instrument meets the index requirements. Because the ball arm instrument belongs to a precise measuring instrument, the ball arm instrument is often used as an instrument for calibrating other equipment such as a machine tool in the prior art, and high-precision equipment and a method for calibrating the measuring error of the ball arm instrument are seldom seen.
Club meter manufacturers often attach with club meters calibration gauges (or blocks) made of materials with smaller temperature expansion coefficients, however, they can only measure a few fixed length values, and cosine errors exist in the measurement results, which often cannot meet the requirement of higher calibration indexes.
Disclosure of Invention
It is therefore an object of the present invention to provide a device and method for calibrating a cue stick, which can reduce measurement errors, increase the amount of data sample space for calibration, and achieve accurate calibration of a variety of cue sticks of different lengths.
In order to achieve the above object, the present invention adopts a technical scheme including the following aspects.
An apparatus for calibrating a cue stick, comprising: the laser interferometer, the first mirror group, the guide rail, the moving platform, the second mirror group, the control box, the first installation group and the second installation group are sequentially arranged on the top surface of the reference platform along the first direction;
wherein, the laser interferometer is arranged on the reference platform through the base; the guide rail is paved on the reference platform along the first direction, and the moving platform is arranged to move back and forth along the guide rail in the first direction;
the first lens group comprises a spectroscope, a reflecting mirror, a mounting rod and a mounting seat, wherein the spectroscope and the reflecting mirror are sequentially arranged on the mounting rod and are mounted on the reference platform through the mounting seat; the second lens group comprises a reflecting mirror, a mounting rod and a mounting seat, wherein the reflecting mirror is arranged on the mounting rod and is mounted on the mobile platform through the mounting seat; the first mounting group is provided with a first mounting cup, and the second mounting group is provided with a second mounting cup;
the first mirror group and the second installation group are fixedly arranged relative to the reference platform in the first direction; the second lens group and the first mounting group are fixedly arranged relative to the mobile platform in the first direction; the first lens group, the second lens group, the first mounting group and the second mounting group are all arranged to be movable along the second direction and fixed after being moved to the set position, so that the first mounting cup, the second mounting cup, the spectroscope of the first lens group and the reflecting mirror of the second lens group are positioned on the same straight line light path of laser emitted by the laser interferometer.
Preferably, the first mounting cup and the second mounting cup are both columnar structures, a concave surface is arranged on the end face of one columnar end to be attached and fixed with a standard ball of the ball rod instrument through magnetic force, and the other end of the columnar structure is a mounting end which can move along a third direction and is fixed after moving to a set position.
Preferably, the first mounting group is configured to mount the first mounting cup in a direction perpendicular to the second mounting cup, and the first direction, the second direction, and the third direction are perpendicular to each other.
Preferably, the first mounting group is provided with a circular mounting fixing structure so as to accommodate the fixed end of the first mounting cup, radially fix the first mounting cup at any angle position, and enable the circular surface and the second mounting cup to be mutually perpendicular.
Preferably, the mobile platform is further provided with a power box configured to have an energy storage structure for powering the mobile platform and for powering the circuitry in the control box.
Preferably, the moving platform is provided with a transmission system, which comprises a motor, a transmission rod, a transmission belt and a plurality of transmission wheels which are connected with each other, and the moving platform is driven to reciprocate stably and accurately along the track through a rack arranged on the reference platform.
Preferably, the control box is in communication connection with the upper computer through the communication module, and is arranged to adjust the displacement of the mobile platform for a plurality of times according to the measurement data of the laser interferometer sent by the upper computer.
A method for calibrating a cue stick, comprising calibrating the cue stick using the apparatus described above, and performing positional adjustment prior to calibration, comprising:
the laser beam emitted by the laser source of the laser interferometer is directly beaten at the center of the concave surface of the second mounting cup;
adjusting the second lens group to enable the measuring beam of the laser after passing through the reflecting mirror of the second lens group and the reference beam reflected by the reflecting mirror of the first lens group to be overlapped into the same laser; the first lens group is adjusted to enable the light spot of the laser beam passing through the spectroscope to be positioned at the center of the concave surface of the second mounting cup and the edge of the light spot to overlap with the circular mark.
Preferably, the method further comprises: a laser tracker is adopted, and a target ball with the same diameter as the standard ball at the two ends of the ball arm instrument is used for position adjustment; controlling the moving platform to drive the second lens group to move reciprocally on the track, and tracking the reflecting mirror of the second lens group through the laser tracker to determine a laser measuring light path; and (3) bonding the target ball with the concave surface of the second mounting cup, and adjusting the position of the second mounting group in the second direction and the position of the second mounting cup in the third direction through magnetic force absorption until the center of the target ball is determined by the laser tracker and is positioned on a laser measuring light path.
Preferably, the method further comprises: and the control box repeatedly adjusts the displacement of the mobile platform for a plurality of times according to the measurement data of the laser interferometer and corrects the displacement according to the measurement data of the laser interferometer so as to carry out closed-loop mobile control on the mobile platform.
In summary, due to the adoption of the technical scheme, the invention has at least the following beneficial effects:
the Abbe error and the cosine error in the measuring process are greatly reduced by coaxially installing the club instrument and the light path of the laser interferometer; accurate simulation of various actual working conditions is realized through club instrument installation components at different stations, and the space amount of calibrated data samples is greatly improved; the accurate control of the displacement of the platform is realized through the measurement data fed back by the laser interferometer, and the calibration of any displacement of the club instruments with different lengths in the range of the measuring range can be realized.
Drawings
Fig. 1 is a schematic structural view of a cue stick.
FIG. 2 is a front view of an apparatus for calibrating a cue stick in accordance with an example embodiment of the invention.
Fig. 3 is a top view of the device shown in fig. 2.
Figure 4 is an isometric view of the device of figure 2.
Fig. 5 is a schematic diagram of a calibration optical path according to an exemplary embodiment of the present invention.
Fig. 6 is a schematic view of a first mounting group and a first mounting cup structure according to another exemplary embodiment of the present invention.
Fig. 7 is a schematic view of a first mounting group and a first mounting cup structure according to yet another exemplary embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, so that the objects, technical solutions and advantages of the present invention will become more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 2 to 4 illustrate an apparatus for calibrating a cue stick according to an exemplary embodiment of the present invention, which mainly includes: the reference platform 1, and the laser interferometer 2, the first mirror group 3, the guide rail 4, the moving platform 5, the second mirror group 6, the control box 7, the first mounting group 8, and the second mounting group 9 which are sequentially arranged along the first direction (X direction shown in fig. 2) on the top surface of the reference platform 1.
The reference platform 1 is made of a material with a small temperature expansion coefficient, such as a granite slab, and is substantially rectangular. The laser interferometer 2 is mounted on the reference platform 1 through a base, and the base is provided as a three-dimensional adjustment pan-tilt structure capable of finely adjusting the horizontal position, rotation angle, and pitch angle of the laser interferometer 2.
The guide rail 4 is laid on the reference platform 1 along a first direction, and the moving platform 5 is provided to be movable back and forth along the guide rail 4 in the first direction. The second lens group 6, the control box 7 and the first mounting group 8 are arranged on the mobile platform 5 and move back and forth along the mobile platform 5 in the first direction according to control signals of the control box 7.
The first lens group 3 comprises a spectroscope, a reflecting mirror, a mounting rod and a mounting seat, wherein the spectroscope and the reflecting mirror are sequentially arranged on the mounting rod and are mounted on the reference platform through the mounting seat; the second lens group 6 comprises a reflecting mirror, a mounting rod and a mounting seat, wherein the reflecting mirror is arranged on the mounting rod and is mounted on the mobile platform 5 through the mounting seat. The first mounting group 8 is provided with a first mounting cup 11, and the second mounting group 9 is provided with a second mounting cup 14; the first mounting cup 11 and the second mounting cup 14 are both of a columnar structure, a concave surface is arranged on an end face of one end of the columnar structure to be attached and fixed with standard balls 12 and 13 of the ball arm instrument 10 through magnetic force, and the other end of the columnar structure is a mounting end which is arranged to be movable along a third direction (Z direction shown in fig. 2 and vertical to the X direction) and fixed after being moved to a set position. The concave structures at the ends of the columnar structures of the first mounting cup and the second mounting cup can be arc-shaped concave surfaces so as to be attached and fixed with standard balls with similar radians; in a preferred embodiment, three protruding points are uniformly arranged on the protruding circular rings of the concave structures at the ends of the columnar structures of the first mounting cup and the second mounting cup so as to more firmly accommodate the standard ball.
The first mirror group 3 and the second mount group 9 are fixedly arranged with respect to the reference platform 1 in the first direction; the second mirror group 6 and the first mount group 8 are fixedly disposed with respect to the moving platform 5 in the first direction. The first mirror group 3, the second mirror group 6, the first mount group 8 and the second mount group 9 are each provided so as to be movable in a second direction (the Y direction shown in fig. 3, and the X, Z direction are perpendicular to each other) and fixed after being moved to a set position so that the first mount cup 11, the second mount cup 14, the spectroscope of the first mirror group 3, and the reflecting mirror of the second mirror group 6 are located on the same straight-line optical path of the laser emitted by the laser interferometer.
Preliminary position adjustments are made prior to calibrating the cue stick, including:
after the laser interferometer 2 and the moving platform 5 are installed, the moving platform 5 is moved back and forth in the first direction, so that the laser light path of the laser interferometer 2 is parallel to the moving track of the moving platform 5, and if the laser light path is not parallel, the laser light path can be adjusted by the base of the laser interferometer 2 until the laser light path is parallel.
The second mounting cup 14 is adjusted by the second mounting group 9 so that the laser beam emitted from the laser source of the laser interferometer 2 is directly hit at the center of the concave surface of the second mounting cup 14, the diameter of the laser spot is measured by a measuring microscope, and circular marks of the same diameter are printed on the concave surfaces of the second mounting cup 14 and the first mounting cup 11 by laser printing. In other embodiments, a circular mark may be printed directly (when the spot diameter is similar to the circular mark, which is more convenient to adjust), and a microscope (or other magnifying aid) is used to aid in the installation of the second mounting group 9 and to confirm that the concave center of the second mounting mark 14 is concentric with the circular mark.
By adjusting the second mounting cup 14 with the second mounting set 9 so that the laser spot is located in the concave center of the second mounting cup 14 and the edge of the spot overlaps the circular mark, a measurement microscope can be used to assist in the mounting and to secure the positions of the second mounting set 9 and the second mounting cup 14 after confirming the overlapping.
The first mounting cup 11 may be disposed on both sides of the first mounting group 8 along the first direction, and the concave surface orientation is the same as the concave surface orientation of the second mounting cup 14 during position adjustment, and after laser positioning, the second mounting cup 14 is turned 180 degrees in the first direction so as to be disposed opposite to the concave surface of the first mounting cup 11. The moving platform 5 is adjusted to move along the first direction, so that the other standard ball 12 of the club instrument 10 is jointed with the concave surface of the second mounting cup 14 and is fixed by magnetic force absorption. After the position of the second installation group is adjusted in place, the step is an optional step, and the position of the first installation group is further adjusted, so that the calibration accuracy can be further improved.
The second lens group 6 and the first lens group 3 are installed and adjusted so that the measuring beam of the laser light passing through the reflecting mirror of the second lens group 6 and the reference beam reflected by the reflecting mirror of the first lens group 3 are overlapped into the same laser light, as shown in fig. 5.
Further position adjustment is performed: the power to the club meter 10 is turned on and its measurement data is received (e.g., its length data is received via a wireless communication interface such as bluetooth and displayed via a display screen). The moving platform 5 is controlled to move back and forth along the first direction (for example, the indication value of the club instrument is 99.9999mm, 100.0010mm, 100.0001mm and the like), and the position (for example, 99.9999 mm) with the minimum indication value of the club instrument 10 is determined for fastening; the first mounting cup 11 is moved back and forth in the third direction, the position where the indication value of the cue instrument 10 is minimum is determined, fastening is performed, and the indication value of the laser interferometer 2 is cleared.
The calibration process may calibrate the forward direction and the reverse direction within the measurement range of the cue instrument, respectively, and 5 to 11 calibration points are taken (the number of calibration points is not limited thereto, may be increased or decreased according to different scenes, and in other embodiments, the calibration points may be automatically selected according to a set interval). Specifically, the process of moving the first mounting cup 11 away from the second mounting cup 14 is set as forward, the moving platform 5 is set to move forward to each calibration point, the indication value of the club instrument 10 is obtained at each calibration point (for example, 100.0000mm, 100.1000mm, 100.3500mm, 100.7500mm and 101.0000 mm), the absolute value of the variation of the indication value of the club instrument 10 is calculated, and the absolute value of the indication value of the laser interferometer 2 is obtained (for example, 0.0000mm, 0.1002mm, 0.3497mm, 0.7501mm and 1.0003 mm). Whether the indication error of the club instrument is within a preset range can be calculated according to the indication value of the laser interferometer 2 and the absolute value of the indication value of the club instrument 10. After the forward calibration is completed, the moving platform 5 may be moved to the same or different calibration points in the opposite directions, and the indication values of the club instrument 10 and the laser interferometer 2 at the respective calibration points may be acquired until the indication value of the laser interferometer 2 is 0. The back calibration may be performed in such a direction that the first mounting cup 11 approaches the second mounting cup 14, starting from the position where the indication value of the laser interferometer 2 is 0.
In a preferred embodiment, in order to further reproduce the actual application scene of the cue stick apparatus to improve the accuracy of the calibration, the above-described calibration process may be repeated after exchanging the installation positions of the standard ball 11 and the standard ball 12 of the cue stick apparatus 10.
In other embodiments, as shown in fig. 6, the first mounting group 8 is configured to mount the first mounting cup 11 in a direction perpendicular to the second mounting cup 14, and a schematic view of the mounting position of the first mounting group when the first mounting cup 11 is coaxially disposed with the second mounting cup 14 in fig. 2 is retained in fig. 6 to more clearly illustrate the mounting position of the first mounting group 8 in the present embodiment. As shown in fig. 7, the first mounting group 8 may be further configured as a circular mounting and fixing structure, such as an annular groove rail, which can accommodate the fixing end of the first mounting cup 11 to radially fix the first mounting cup 11 at an arbitrary angular position, and the circular surface and the second mounting cup 14 are disposed perpendicular to each other.
In the embodiment of fig. 6 and 7, the position adjustment may be performed using a laser tracker and using a target ball having the same diameter as the standard ball at both ends of the cue stick. Specifically, the mobile platform 5 is controlled to drive the second lens group 6 to reciprocate on the track, and a laser measuring light path is determined by tracking a reflecting mirror of the second lens group 6 through the laser tracker; the target ball is jointed with the concave surface of the second mounting cup 14 and the position of the second mounting group 9 in the second direction and the position of the second mounting cup 14 in the third direction are regulated by magnetic force absorption until the center of the target ball is determined by the laser tracker and is positioned on a laser measuring light path; further, the target ball and the concave surface of the first mounting cup 11 can be attached and attracted by magnetic force, and the positions of the first mounting group 8 in the second direction and the first mounting cup 11 in the third direction can be adjusted until the center of the target ball is determined by the laser tracker and is positioned on a laser measuring light path. The first installation groups of the stations with different angles can realize the accurate simulation of the actual working conditions of various club instruments, and the space amount of calibrated data samples and the accuracy of measured data are greatly improved.
In a preferred embodiment, the mobile platform 5 is further provided with a power box 15, which is configured to have an energy storage structure such as a lithium battery, and is used for providing power for the mobile platform 5 and supplying power for a circuit in the control box 7, so as to reduce the vibration influence of a power line and the like on the mobile platform, and further improve the accuracy of the calibration data.
Wherein, be provided with the transmission system on the moving platform 5, including interconnect's motor, transfer line, drive belt and a plurality of drive wheels to drive the moving platform through the rack that sets up on the benchmark platform and reciprocate steadily and accurately along the track.
The control box 7 is provided with a control circuit, a transformer, a wireless communication module, a leakage protector and other devices. The control box 7 is in communication connection with the upper computer through the wireless communication module and controls the displacement of the mobile platform according to the instruction of the upper computer. In a further embodiment, the upper computer transmits the measurement data of the laser interferometer to the control box in real time, the control box repeatedly and finely adjusts the displacement of the mobile platform according to the high-precision distance measurement data of the laser interferometer and corrects the displacement according to the measurement data of the laser interferometer, so that the high-precision closed-loop mobile control of the mobile platform is realized, and the mobile platform drives the reflecting mirror to a preset calibration point position accurately, and the displacement control precision of the servo motor is far beyond that of a common servo motor. In other embodiments, the pulse control accuracy of the servo motor used by the mobile platform may be far lower than the measurement accuracy of the laser interferometer, possibly based on cost consideration, so that the number of fine adjustment times of the displacement of the mobile platform can be limited in the closed-loop mobile control process, so as to avoid that the adjustment cycle cannot be ended. In a further embodiment, the independent measurement result of other displacement measurement devices such as a magnetic grating range finder can be used as reference data for high-precision closed-loop movement control of the moving platform.
The upper computer is in communication connection with the control box, the laser interferometer and the club instrument through the communication interfaces so as to acquire corresponding measurement data and displacement information, and the upper computer can further analyze the measurement data through software of the upper computer and output calibration result data or directly display the calibration result data through a display.
Those skilled in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
The foregoing is a detailed description of specific embodiments of the invention and is not intended to be limiting of the invention. Various alternatives, modifications and improvements will readily occur to those skilled in the relevant art without departing from the spirit and scope of the invention.
Claims (6)
1. A method for calibrating a cue stick, comprising calibrating the cue stick using a calibration device and performing positional adjustment prior to calibration, comprising:
the laser beam emitted by the laser source of the laser interferometer is directly beaten at the center of the concave surface of the second mounting cup;
adjusting the second lens group to enable the measuring beam of the laser after passing through the reflecting mirror of the second lens group and the reference beam reflected by the reflecting mirror of the first lens group to be overlapped into the same laser; the first lens group is adjusted to enable the light spot of the laser beam passing through the spectroscope to be positioned at the center of the concave surface of the second mounting cup and the edge of the light spot to overlap with the circular mark;
the calibration device comprises: the laser interferometer, the first mirror group, the guide rail, the moving platform, the second mirror group, the control box, the first installation group and the second installation group are sequentially arranged on the top surface of the reference platform along the first direction;
wherein, the laser interferometer is arranged on the reference platform through the base; the guide rail is paved on the reference platform along the first direction, and the moving platform is arranged to move back and forth along the guide rail in the first direction;
the first lens group comprises a spectroscope, a reflecting mirror, a mounting rod and a mounting seat, wherein the spectroscope and the reflecting mirror are sequentially arranged on the mounting rod and are mounted on the reference platform through the mounting seat; the second lens group comprises a reflecting mirror, a mounting rod and a mounting seat, wherein the reflecting mirror is arranged on the mounting rod and is mounted on the mobile platform through the mounting seat; the first mounting group is provided with a first mounting cup, and the second mounting group is provided with a second mounting cup;
the first mirror group and the second installation group are fixedly arranged relative to the reference platform in the first direction; the second lens group and the first mounting group are fixedly arranged relative to the mobile platform in the first direction; the first lens group, the second lens group, the first mounting group and the second mounting group are all arranged to be movable along the second direction and fixed after being moved to the set position, so that the first mounting cup, the second mounting cup, the spectroscope of the first lens group and the reflecting mirror of the second lens group are positioned on the same straight line light path of laser emitted by the laser interferometer;
the first mounting cup and the second mounting cup are both in a columnar structure, the end face of one columnar end is provided with a concave surface to be attached and fixed with a standard ball of the ball rod instrument through magnetic force, the other end of the columnar structure is a mounting end which is arranged to be movable along a third direction and fixed after being moved to a set position, wherein the first mounting cup is arranged on two sides of a first mounting group along a first direction, when the position is adjusted, the first mounting cup is firstly provided with the concave surface facing the same direction as the concave surface of the second mounting cup, and after laser positioning, the second mounting cup is arranged in a 180-degree rotation manner in the first direction so as to be opposite to the concave surface of the first mounting cup; the moving platform is regulated to move along the first direction, so that the other standard ball of the ball arm instrument is attached to the concave surface of the second mounting cup and is adsorbed and fixed through magnetic force;
the first mounting group is used for mounting the first mounting cup in the direction perpendicular to the second mounting cup, and the first direction, the second direction and the third direction are perpendicular to each other;
the first installation group is arranged to be a circular installation fixing structure and is arranged to be an annular groove track so as to accommodate the fixed end of the first installation cup, the first installation cup is radially fixed at any angle position, and the circular surface and the second installation cup are mutually perpendicular.
2. The method of claim 1, wherein the mobile platform is further provided with a power box configured with an energy storage structure for powering the mobile platform and powering the circuitry in the control box.
3. The method of claim 1, wherein the moving platform is provided with a transmission system comprising a motor, a transmission rod, a transmission belt, and a plurality of transmission wheels connected to each other, and the moving platform is driven to reciprocate smoothly and precisely along the rail by a rack provided on the reference platform.
4. A method according to any one of claims 1 to 3, wherein the control box is communicatively connected to the host computer via a communication module and is configured to adjust the displacement of the mobile platform a plurality of times based on measurement data of the laser interferometer transmitted by the host computer.
5. The method as recited in claim 1, further comprising: a laser tracker is adopted, and a target ball with the same diameter as the standard ball at the two ends of the ball arm instrument is used for position adjustment; controlling the moving platform to drive the second lens group to move reciprocally on the track, and tracking the reflecting mirror of the second lens group through the laser tracker to determine a laser measuring light path; and (3) bonding the target ball with the concave surface of the second mounting cup, and adjusting the position of the second mounting group in the second direction and the position of the second mounting cup in the third direction through magnetic force absorption until the center of the target ball is determined by the laser tracker and is positioned on a laser measuring light path.
6. The method as recited in claim 1, further comprising: and the control box repeatedly adjusts the displacement of the mobile platform for a plurality of times according to the measurement data of the laser interferometer and corrects the displacement according to the measurement data of the laser interferometer so as to carry out closed-loop mobile control on the mobile platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210033918.0A CN114370817B (en) | 2022-01-12 | 2022-01-12 | Device and method for calibrating club instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210033918.0A CN114370817B (en) | 2022-01-12 | 2022-01-12 | Device and method for calibrating club instrument |
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| CN114370817A CN114370817A (en) | 2022-04-19 |
| CN114370817B true CN114370817B (en) | 2023-08-15 |
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