CN113970299B - A device for high-precision vertical measurement of the outline of a slender part - Google Patents
A device for high-precision vertical measurement of the outline of a slender part Download PDFInfo
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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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Abstract
本发明公开的一种高精度竖直测量细长件外形轮廓的装置，属于制造业计量检测领域。本发明主要由竖直基准导向运动组件、多尺寸测量组件、快速定位组件、运动控制系统四部分组成。竖直基准导向运动组件用于实现多尺寸测量组件、快速定位组件的导向、运动驱动及位置测量，快速定位组件采用数字CCD及二维移动复位方案实现被测细长件的快速安装定位，多尺寸测量组件采用旋转非接触扫描测量方案实现被测细长件的截面尺寸测量。本发明能够实现圆形、四边形、六边形等各种截面细长零部件和标准件在竖直状态下的快速安装定位及高精度的外形轮廓测量，具有测量精度高、通用性强、测量高效的优点。
The present invention discloses a device for high-precision vertical measurement of the outer contour of a slender part, which belongs to the field of metrology and detection in the manufacturing industry. The present invention mainly consists of four parts: a vertical reference guide motion component, a multi-size measurement component, a rapid positioning component, and a motion control system. The vertical reference guide motion component is used to realize the guidance, motion drive and position measurement of the multi-size measurement component and the rapid positioning component. The rapid positioning component adopts a digital CCD and a two-dimensional mobile reset solution to realize the rapid installation and positioning of the measured slender part. The multi-size measurement component adopts a rotating non-contact scanning measurement solution to realize the cross-sectional dimension measurement of the measured slender part. The present invention can realize the rapid installation and positioning of various cross-section slender parts and standard parts such as round, quadrilateral, hexagonal, etc. in a vertical state and high-precision outer contour measurement, and has the advantages of high measurement accuracy, strong versatility, and efficient measurement.
Description
Technical Field
The invention belongs to the field of metering detection in manufacturing industry, relates to a device for vertically measuring the outline of an elongated member with high precision, and particularly relates to a device for directly measuring the outline of an elongated vertically used member such as a nuclear fuel assembly, a standard elongated mandrel and the like with high precision.
Background
In the field of manufacturing metering detection, a high-precision standard is generally used for calibrating a measuring instrument, for example, a cylindricity measuring device needs to be calibrated by adopting an elongated standard mandrel, and a nuclear fuel assembly measuring instrument needs to be calibrated by adopting a standard nuclear fuel assembly. Different sizes of measuring instruments need different sizes of etalons, and particularly, an elongated standard for vertical use of an elongated member needs a higher measuring device to meet the calibration requirement; furthermore, elongated members of different cross-sectional shapes require adaptive capacity strength measuring means to accommodate retrofit measurement needs. The existing devices applied to high-precision measurement of elongated members are three types, namely a cylindricity measuring instrument for measuring standard mandrels, the type of instrument uses a high-precision air floatation turntable as a rotating reference, a high-precision vertical guide rail and a transverse moving guide rail are used for realizing movement and position measurement of vertical and transverse measuring heads, and then a high-precision inductance displacement sensor is combined for realizing roundness and cylinder measurement of mandrel standard parts or parts, so that the currently commercialized type-565/585H cylindricity instrument of British Taylor hobson company can reach 1.2m,Taylrond 450 type with a range of 1.5m in the vertical direction, the range of the type-YD 1000 large roundness instrument produced by domestic intelligent measurement and control is 1.0m in the vertical direction, but a longer mandrel is not yet seen by commercial instruments to meet the calibration or measurement requirements; the second type is an instrument for measuring quadrilateral or hexagonal nuclear fuel assemblies, wherein the instrument adopts a combination of a vertical back frame and a guide rail as a guide reference of a vertical movement hollow sliding table, and the measurement of the straightness and the section profile of the quadrilateral or hexagonal deformation slender nuclear fuel assemblies is realized through an inductance or grating type pneumatic displacement sensor which is fixedly arranged on the hollow sliding table and distributed in a quadrilateral or hexagonal shape; the third type is to use a vertically used slender piece, and to use high-precision measurement means such as three coordinates and the like to measure in a horizontal state by combining with horizontally placed tools such as granite and the like. The problem of measuring the elongated member by the cylindricity meter is limited by a rotation measuring method, the measurement requirement of the ultra-long elongated member is difficult to realize, and the measurement is limited to the revolving body parts; the nuclear fuel assembly measuring instrument solves the problem of expanding the measuring range in the vertical direction, but adopts a sensor fixing scheme, different nuclear fuel assemblies are required to be provided with different detectors, the scheme is suitable for on-line measurement of batch production, but the measuring and calibrating requirements of different size standard nuclear fuel assemblies cannot be met, and in addition, the back frame guide rail guiding scheme is directly adopted, so that the measuring precision of the outline is difficult to improve; the vertical use of the horizontal measurement scheme makes it difficult to agree the results of the horizontal measurement with those of the vertical state due to the existence of the fulcrum and the gravitational deformation problem.
In order to solve the problem of high-precision measurement of the profile of a part or a standard part which is vertically used in a slender way with different profiles such as a round shape, a quadrilateral shape, a hexagonal shape and the like, a device for vertically measuring the profile of the slender part with high precision is needed.
Disclosure of Invention
The invention aims to provide a device for vertically measuring the profile of an elongated member with high precision, which can realize the high-precision measurement of elongated vertically used parts or standard members with different profiles and has the advantages of large vertical measurement range, high measurement precision and suitability for measurement of different sections. The different shapes comprise a circle, a quadrilateral and a hexagon.
The invention is realized by the following technical scheme:
the invention discloses a device for vertically measuring the outline of an elongated piece with high precision, comprises a vertical reference guiding movement assembly, a multi-dimension measuring assembly, a quick positioning assembly and a movement control system. The vertical reference guide movement assembly is used for providing accurate guide driving and deflection correction collimation laser for the multi-size measurement assembly and the rapid positioning assembly; the multi-dimension measuring assembly is used for realizing precise measurement of the cross section outline dimensions of the measured piece at different vertical measuring positions under the guiding drive of the vertical reference guiding movement assembly; the quick positioning assembly is used for adapting to the requirements of measuring parts at different heights, realizing automatic auxiliary positioning of the measured parts under the guiding drive of the vertical reference guiding movement assembly, and improving the installation efficiency and the initial positioning precision of the measured parts.
The vertical reference guiding movement assembly mainly comprises a base, a deflection correction collimation laser, a measured piece mounting table, a guide rail, a vertical back frame, a multi-dimension measuring assembly mounting table, a screw rod, a quick positioning assembly mounting table, a counterweight pulley, a counterweight and a grating ruler. The base is used for bearing the measuring device and is used for connecting the back frame and the measured piece mounting table, so that the base and the base are fixed, and the stability of the measuring device is ensured. The two deflection correction collimation lasers are used for being installed on the base, through two vertical laser references and through being matched with the PSD of the two laser position sensors, real-time acquisition of torsion and straightness data of the installation table of the multi-size measurement assembly is achieved, and torsion and straightness errors of the installation table are further compensated. Two precise linear guide rails are arranged on the vertical back frame and used for providing references for guiding the multi-dimension measuring assembly mounting table and the quick positioning assembly mounting table. The positions of the multi-size measuring component mounting table and the quick positioning component mounting table are measured through a grating ruler arranged on the back frame. The screw rod is fixedly arranged on the vertical back frame, the screw rod nut is matched with the hollow worm gear reducer arranged behind the multi-dimension measuring assembly mounting table and the quick positioning assembly mounting table, and the guide driving of the same group of guide rails at different positions of the multi-dimension measuring assembly mounting table and the quick positioning assembly mounting table is realized by rotating the screw rod fixed nut. The counterweight pulley is used for realizing the counterweight connection of the multi-dimension measuring assembly mounting table, the quick positioning assembly mounting table and the vertical back frame through the fixing wire, realizing the weight balancing of the multi-dimension measuring assembly mounting table and the quick positioning assembly mounting table, and improving the running stability and safety. The measured piece mounting table is used for mounting a measured piece, standard devices with different steps are mounted on the measured piece mounting table, and the standard devices are used for realizing bottom positioning of the measured piece and self calibration of a measuring device.
The standard devices with different steps comprise standard devices with different steps in a quadrilateral, hexagonal or round shape.
The multi-dimension measuring assembly mainly comprises a high-precision displacement sensor, a high-precision displacement sensor mounting seat, a radial precision displacement table, a transverse scanning displacement table, a hollow rotating shaft, a laser position sensor PSD, a driving motor, a friction driving piece, a connecting disc, a friction driving disc, a rotary circular grating disc, a precision bearing, a position compensation precision displacement sensor and a reference ring gauge. The high-precision displacement sensor adopts a non-contact mode to realize the acquisition of the section profile data of the measured piece. The radial precision displacement platform is mainly used for expanding the measurement range of the high-precision displacement sensor, and the measurement of the measured pieces with different diameter sizes is realized through rotation. The transverse scanning displacement platform is used for carrying the high-precision displacement sensor and the radial precision displacement platform to integrally and transversely move, so that the acquisition of single-side data of the elongated piece with the quadrangular or hexagonal section is realized, and the measurement of the sizes of the rest sections is realized through rotation. The hollow rotating shaft is independent of the reference ring gauge, is fixedly connected with the friction driving disc and the rotary circular grating disc, is installed on the connecting disc through a precision bearing, and is driven by the driving motor and the friction driving piece to realize rotation and positioning under the feedback of the rotation data of the rotary circular grating disc, so that the measuring action is completed. The two position compensation precision displacement sensors are fixedly arranged behind the reference ring gauge and are used for receiving laser from the two deflection correction collimation lasers to realize the compensation of straightness and deflection errors. The two position compensation precision displacement sensors are symmetrically distributed at the bottom of the rotating shaft, and the compensation of the rotating radial error caused by the large-diameter crossed roller bearing is realized through measuring the reference ring gauge.
The rapid positioning component mainly comprises a longitudinal moving table, a digital CCD, a longitudinal grating, a transverse moving table, a transverse grating, a transverse guide rail, a transverse driving motor, a longitudinal guide rail, a positioning pin and an induction displacement sensor. The longitudinal moving table is used for installing the induction displacement sensor and the two precise positioning pins, and under the guidance of the guide rail, the matching of pin holes and the resetting of the top end of the tested piece are realized according to the collected edge information of the tested piece by the digital CCD, so that the small positioning surface of the bottom surface of the elongated tested piece is prevented from causing the offset of the top of the elongated piece; in addition, the positioning plate is matched with the two pin holes, so that positioning matching of the tops of different types of measured pieces such as cone positioning and the like can be realized, and initial positioning is further realized. The two diagonally-mounted digital CCDs are used for acquiring the top size of the tested piece, acquiring the edge size and further acquiring the pin hole position, and realizing pin hole matching. The transverse moving platform is used for installing the longitudinal moving platform through the longitudinal guide rail, so that the transverse moving of the longitudinal moving platform is realized, the aim of two-dimensional moving of the longitudinal moving platform is fulfilled, and pin holes are aligned conveniently. The longitudinal grating and the transverse grating adopt grating scales to record the positions of the pins corresponding to the mounting table pins of the bottom tested piece, and then the initial position offset is fed back after the pin holes are matched, and the reset of the initial position of the longitudinal moving table is realized under the driving of the transverse driving motor and the longitudinal driving motor. The induction displacement sensor is arranged on the top surface of the longitudinal moving table and is used for judging the size of the locating pin entering the hole of the measured piece when the locating pin moves to the upper end of the locating hole of the measured piece on the longitudinal moving table and executing the vertical movement action, so as to prevent the deformation of the measured piece caused by extrusion of the measured piece. The transverse driving motor and the longitudinal driving machine part both adopt a large reduction ratio gear motor and drive the longitudinal moving table and the transverse moving table to move according to given actions in cooperation with a small lead screw.
The motion control system mainly comprises a control box, a controller, a data acquisition unit and a control terminal, and is mainly used for motion control of the whole measurement system and acquisition and processing of test data.
Preferably, the top of the measured piece mounting table is provided with a cylindrical step, a quadrilateral step and a six-deformation step which are convenient to switch, and three-coordinate measurement is adopted to carry out assignment as an initial size introduction standard and a self-calibration standard, so that the measurement reliability of the measurement system is improved.
Preferably, the high-precision displacement sensor adopts a high-precision non-contact displacement sensor so as to realize rapid data acquisition and prevent offset deviation caused by non-normal measurement of the spherical measuring head of the contact type measuring sensor.
Preferably, the high-precision displacement sensor adopts a symmetrical double-branch position opposite diameter measurement mode, so that the precision of measuring the external dimension is improved.
Preferably, the longitudinal grating and the transverse grating adopt absolute grating scales, so that the two-dimensional initial positioning accuracy of the longitudinal mobile station is improved.
Preferably, the inductive displacement sensor adopts a spring measuring rod for resetting so as to realize real-time measurement of the insertion quantity in the alignment process of the hole pin and prevent deformation of the measured piece caused by excessive movement.
Preferably, the precision bearing is a precision crossed roller bearing to reduce the installation space.
Preferably, the transverse guide rail and the longitudinal guide rail adopt a crossed roller bearing scheme, so that the size of the longitudinal moving table and the transverse moving table is reduced, the rigidity is improved, and the weight is reduced.
The invention discloses a working method of a device for vertically measuring the outline of an elongated piece with high precision, which comprises the following steps:
The rapid positioning component resets and moves at a higher position of the top of the tested piece. The bottom of the measured piece is firstly mounted on a measured piece mounting table in a hoisting mode, then the displacement of the initial position deviated from the top of the existing measured piece is calculated by utilizing the collected edge information of the measured piece of a digital CCD mounted on a longitudinal moving table, and the longitudinal moving table is driven by a transverse driving motor and a longitudinal driving motor to perform two-dimensional movement in a horizontal plane, so that the position of a positioning pin mounted on the longitudinal moving table is aligned with the position of a pin hole at the top of the measured piece. The quick positioning component moves downwards under the guide of the guide rail, contacts the top surface of the measured piece through an induction displacement sensor arranged on the longitudinal moving table, and further judges the size of the positioning pin entering the hole of the measured piece until the positioning pin reaches the target position. The longitudinal displacement table is driven by the transverse driving motor and the longitudinal driving motor to perform two-dimensional reset motion in the horizontal plane, so that the positions of the upper pin hole and the lower pin hole are in the same initial position, the initial axis or the central line of the measured piece is parallel to the measurement central line of the measuring device, and the installation alignment of the measured piece is realized.
After the measured piece is installed in place, the dimension measurement of the outline of the measured piece is started, firstly, the multi-dimension measurement assembly is driven by the multi-dimension measurement assembly installation table to move to the standard device with the position measurement of the measured piece installation table consistent with the section shape of the measured piece, and further the reset measurement and the self calibration of the measurement device are realized. Then the multi-dimension measuring assembly moves to the section position of the measured piece to be measured under the drive of the multi-dimension measuring assembly mounting table to execute measurement work, the high-precision displacement sensor reaches the vicinity of the surface of the measured piece under the drive of the radial precision displacement table, so that the measurement surface enters the measurement range of the high-precision displacement sensor and executes measurement work, meanwhile, data of the high-precision displacement sensor, data of a grating ruler on the radial precision displacement table, data of a transverse displacement table and data of a rotary circular grating disk are collected, polar coordinate data are calculated, and then spatial coordinate values of the surface of the measured piece are calculated by combining the data of the grating ruler of the multi-dimension measuring assembly mounting table. If the section of the measured piece is circular, the transverse scanning displacement table drives the radial precise displacement table to move to find the diameter inflection point position, the measured piece can be fixed, and then the hollow rotating shaft performs rotating action to obtain the data of the section profile of the measured piece. If the section of the measured piece is in a stepped shape, the high-precision displacement sensor reaches the vicinity of the surface of the measured piece under the drive of the radial precision displacement table, so that the measurement surface is required to be transversely scanned after entering the measurement range of the high-precision displacement sensor, the radial precision displacement table is driven to move to acquire the data of single faces with different sections, the measured piece is moved to other faces after the acquisition is completed, and the measurement tool is completed until all the data are acquired, wherein the stepped shape comprises a quadrilateral shape or a hexagon. The multi-dimension measuring assembly moves to different measuring positions under the drive of the multi-dimension measuring assembly mounting table and then performs rotary section measurement, wherein the two problems are that the different section measuring positions have deflection and straightness errors introduced by the guide rail; secondly, radial errors are introduced by hollow rotation, so that the measuring precision of the outline of the elongated member is affected. The two position compensation precision displacement sensors are symmetrically distributed at the bottom of the rotating shaft, and the rotating error caused by the large-diameter crossed roller bearing can be realized by measuring the reference ring gauge; two laser position sensors PSD which are fixedly installed are designed behind the reference ring gauge and are used for receiving laser from two deflection correction collimation lasers to realize the linearity and deflection compensation of the installation table of the multi-size measurement assembly.
The straightness and deflection angle calculation method comprises the following steps: the oxy is a measurement coordinate system of the laser position sensor PSD corresponding to the left yaw correction collimation laser, o ' x ' y ' is a measurement coordinate system of the laser position sensor PSD corresponding to the right yaw correction collimation laser, the position relationship of the two straightness measurement laser position sensors PSD is obtained through linear motion calibration in advance, and the position relationship [ x 0,y0, alpha ] between the two coordinate systems of the laser position sensor PSD is obtained. The initial laser measurement point p 1 has a coordinate (x 1,y1) in oxy, and the straightness and rotation gesture measurement module has a coordinate (x 2,y2) in o ' x ' y ' of the laser measurement point p 2 after the displacement platform moves a distance; the initial laser measurement point p ' 1 has a coordinate (x ' 1,y′1) within o ' x ' y ', and the laser implemented multi-dimensional measurement assembly mount has a coordinate (x ', y ') within o ' x ' y ' of laser measurement point p ' 2 after the displacement stage has been moved a distance. Because the two laser position sensors PSD are fixed in position, the two laser position sensors PSD measurement coordinate systems are fixed in relation, so that the measurement data in one laser position sensor PSD coordinate system is converted into the other laser position sensor PSD coordinate system for the convenience of calculation, and then according to the coordinate system conversion principle, the coordinate of p' 1 in oxy is (the coordinate of x 0+x′1cosα-y′1sinα,y0+x′1sinα+y′1cosα),p′2 in oxy is (x 0+x′2cosα-y′2sinα,y0+x′2sinα+y′2 cos α), and then the rotation angle is:
after the laser realizes the movement of the multi-dimension measuring component mounting table, the position offset of p 2 relative to p 1 is (x 2-x1,y2-y1), and the position straightness deflection data of the multi-dimension measuring component mounting table is compared with the position data of the initial measuring standard device by different lasers and is compensated into the section measuring data, so that the measuring precision of the whole measuring device is improved.
The beneficial effects are that:
1. The invention discloses a device for vertically measuring the profile of an elongated member with high precision, wherein a high-precision displacement sensor of a multi-dimension measuring assembly adopts a non-contact method to realize the profile data of the section of the measured member, a radial precision displacement table is utilized to expand the measuring range of the high-precision displacement sensor, the measurement of the measured member with different diameter dimensions can be realized through rotation, the whole transverse movement of the high-precision displacement sensor and the radial precision displacement table is carried by combining a transverse scanning displacement table, further, the acquisition of single-side data of the elongated member with a quadrilateral or hexagonal section can be realized, and the measurement of the profile of the other sections can be realized through rotation.
2. The invention discloses a device for vertically measuring the outline of an elongated piece with high precision, which adopts two position compensation precision displacement sensors to be fixedly arranged behind a reference ring gauge and is used for receiving laser from two deflection correction collimation lasers to realize the compensation of straightness and deflection errors. The two position compensation precision displacement sensors are symmetrically distributed at the bottom of the rotating shaft, and the compensation of the rotation error caused by the large-diameter crossed roller bearing can be realized by measuring the reference ring gauge. The reference is established by adopting double lasers to directly realize the compensation of the linearity and deflection errors of the measuring positions of the multi-dimension measuring assembly, and the reference ring gauge is utilized to realize the radial and positioning errors caused by the rotation of the hollow rotating shaft, so that the precision of the measuring device is effectively improved, the uncertainty of the section measurement is 2 mu m, the uncertainty of the linearity and torsion measurement in the vertical 5m travel range is 5 mu m, and the precision of the conventional large-range long and thin part vertical measuring instrument is improved.
3. The invention discloses a device for vertically measuring the outline of an elongated member with high precision, which adopts a digital CCD as a monitoring measurement means, realizes the alignment of pin holes by utilizing the driving of a transverse driving motor and a longitudinal driving motor to realize the two-dimensional movement of a longitudinal moving table, and realizes the pin hole matching by measuring the distance between the upper end surface of the measured member and a quick positioning assembly through an induction displacement sensor, thereby achieving the aim of quick alignment of the measured member and a measuring system and effectively improving the installation alignment efficiency of the elongated measured member.
Drawings
FIG. 1 is a general construction view of an apparatus for high precision vertical measurement of the profile of an elongated member of the present invention;
FIG. 2 is a block diagram of a multi-dimensional measurement assembly of the present invention;
FIG. 3 is a block diagram of the quick positioning assembly of the present invention;
FIG. 4 is a schematic diagram of the operation of the apparatus for high precision vertical measurement of the profile of an elongated member of the present invention;
FIG. 5 is a graph of the linearity and yaw attitude measurements calculation of the multi-dimensional measurement assembly of the present invention.
Wherein: 1-vertical reference guide motion assembly, 2-multisize measurement assembly, 3-quick positioning assembly, 101-base, 102-yaw correction collimation laser, 103-measured piece mount, 104-guide rail, 105-vertical back frame, 106-multisize measurement assembly mount, 107-counterweight, 108-measured piece, 109-lead screw, 110-quick positioning assembly mount, 111-counterweight pulley, 201-high precision displacement sensor, 202-high precision displacement sensor mount, 203-radial precision displacement table, 204-transverse scan displacement table, 205-hollow rotation shaft, 206-laser position sensor PSD, 207-drive motor, 208-friction drive, 209-land, 210-friction drive disk, 211-rotary circular grating disk, 212-precision bearing, 213-position compensation precision displacement sensor, 214-reference ring gauge, 301-longitudinal displacement table, 302-digital CCD, 303-longitudinal grating, 304-transverse displacement table, 305-transverse grating, 306-transverse guide rail, 307-transverse drive motor, 308-longitudinal drive motor, 309-longitudinal drive rail, 310-sensor induction displacement sensor, 311-sensor.
Detailed Description
The invention is further described below with reference to the drawings and examples of implementation.
Referring to fig. 1, the device for vertically measuring the profile of an elongated member with high precision disclosed in this embodiment mainly comprises four parts, namely a vertical reference guiding movement assembly 1, a multi-dimension measurement assembly 2, a quick positioning assembly 3 and a movement control system. The vertical reference guide motion assembly 1 is a measurement guide basis of the whole measuring device and is used for providing accurate guide driving and deflection correction collimation laser for the multi-size measuring assembly 2 and the rapid positioning assembly 3; the multi-dimension measuring assembly 2 is used for realizing precise measurement of the cross-section outline dimensions of the measured piece 108 at different vertical measuring positions under the guiding drive of the vertical reference guiding movement assembly 1; the quick positioning component 3 is used for adapting to the requirements of measuring pieces 108 with different heights, realizing automatic auxiliary positioning of the measured pieces 108 under the guiding drive of the vertical reference guiding movement component 1, and improving the installation efficiency and the initial positioning precision of the measured pieces. The motion control system is used for motion control of the system and acquisition and calculation of data.
Referring to fig. 1, the vertical reference guiding movement assembly mainly comprises a base 101, a yaw correction collimation laser 102, a measured piece mounting table 103, a guide rail 104, a vertical back frame 105, a multi-dimension measurement assembly mounting table 106, a screw 109, a quick positioning assembly mounting table 110, a counterweight pulley 111, a counterweight 107, a grating ruler and other parts. The base 101 is a foundation carried by the measuring device and is used for connecting the back frame 105 and the measured piece mounting table 103, so that the fixing between the base and the foundation is realized, and the stability of the measuring device is ensured. The two yaw correction collimation lasers 102 are used for being installed on the base 101, through two vertical laser references and through being matched with the two laser position sensors PSD206, real-time acquisition of the torsion size and straightness data of the multi-size measurement assembly installation table 106 is achieved, and torsion and straightness errors are further compensated. Two precision linear guide rails 104 are mounted on a vertical back frame 105 for providing a datum for the multi-dimensional measurement assembly mount 106, quick positioning assembly 110 mount guidance. The positions of the multi-size measuring component mounting table 105 and the quick positioning component mounting table 106 are measured by a grating ruler mounted on the back frame 105. The lead screw 109 is fixedly arranged on the vertical back frame 105, and the lead screw nut is matched with a hollow turbine worm reducer arranged behind the multi-dimension measuring assembly mounting table 106 and the quick positioning assembly mounting table 110, so that the lead screw is fixed to rotate, and the multi-dimension measuring assembly mounting table 106 and the quick positioning assembly mounting table 110 are driven to guide the same group of guide rails at different positions. The counterweight pulley 111 is used for realizing the weight balancing of the multi-dimension measuring assembly mounting table 10 and the quick positioning assembly mounting table 110 by connecting the multi-dimension measuring assembly mounting table 106 and the quick positioning assembly mounting table 110 with the counterweight 107 behind the vertical back frame 105 through steel wires, and improving the running stability and safety. The tested piece mounting table 103 is used for mounting the tested piece 108, and standard devices with different steps of quadrangle, hexagon and circle are mounted on the standard devices, so that the bottom positioning of the tested piece 108 and the self calibration of the measuring device can be realized.
Referring to fig. 2, the multi-dimension measuring assembly 2 mainly comprises a high-precision displacement sensor 201, a high-precision displacement sensor mounting seat 202, a radial precision displacement table 203, a transverse scanning displacement table 204, a hollow rotating shaft 205, a laser position sensor PSD206, a driving motor 207, a friction driving piece 208, a connecting disc 209, a friction driving disc 210, a rotary circular grating disc 210, a precision bearing 212, a position compensation precision displacement sensor 213, a reference ring gauge 214 and other parts. The high-precision displacement sensor 201 adopts a non-contact method to collect the section profile data of the measured piece. The radial precision displacement table 203 is mainly used for expanding the measurement range of the high-precision displacement sensor 201, and can realize the measurement of the measured pieces 108 with different diameter sizes through rotation. The transverse scanning displacement table 204 is used for carrying the high-precision displacement sensor 201 and the radial precision displacement table 203 to move integrally transversely, so that the acquisition of single-side data of the elongated measured piece 108 with a quadrangular or hexagonal section can be realized, and the measurement of the sizes of the rest sections can be realized through rotation. The hollow rotary shaft 205 is independent of the reference ring gauge 214 and is fixedly connected with the friction driving disc 210 and the rotary circular grating disc 211, is arranged on the connecting disc 209 through a precision bearing 212, and is driven by the driving motor 207 and the friction driving piece 208 to realize rotation and positioning under the feedback of the rotation data of the rotary circular grating disc 211, so that the measurement action is completed. Two position compensation precision displacement sensors 206 are fixedly arranged behind the reference ring gauge 214 and are used for receiving laser light from the two deflection correction collimation lasers 102 to realize the compensation of the straightness and deflection errors of the measured piece 108. Two position compensation precision displacement sensors 213 are symmetrically distributed at the bottom of the hollow rotating shaft 205, which can realize the compensation of the rotation radial error caused by the large-diameter crossed roller bearing 212 through measuring the reference ring gauge 214.
Referring to fig. 3, the quick positioning assembly 3 mainly comprises a longitudinal moving table 301, a digital CCD302, a longitudinal grating 303, a transverse moving table 304, a transverse grating 305, a transverse guide rail 306, a transverse driving motor 307, a longitudinal driving motor 308, a longitudinal guide rail 309, a positioning pin 310, an inductive displacement sensor 311 and other parts. The longitudinal moving table 301 is used for installing an inductive displacement sensor 311 and two precise positioning pins 310, and under the guidance of the transverse guide rail 306 and the longitudinal guide rail 309, the matching of pin holes and the resetting of the top end of the measured piece 108 are realized according to the collected edge information of the measured piece 108 of the digital CCD302, so that the offset of the top of the elongated piece caused by the small positioning surface of the bottom surface of the elongated measured piece 108 is prevented; in addition, the positioning plate is matched with the two pin holes, so that positioning matching of the tops of the measured pieces 108 in different types such as cone positioning and the like can be realized, and initial positioning is further realized. Two diagonally mounted digital CCDs 302 are used to obtain the top dimension of the test piece 108, and to obtain the edge dimension and thus the pin hole position, to achieve pin hole matching. The transverse moving platform 304 is used for installing the longitudinal moving platform 301 through the longitudinal guide rail 309, so as to realize the transverse movement of the longitudinal moving platform 301, achieve the goal of two-dimensional movement of the longitudinal moving platform 301, and facilitate pin hole alignment. The longitudinal grating 303 and the transverse grating 305 can record the positions of the pins corresponding to the mounting table pins of the bottom tested piece by adopting a grating ruler, and then feed back the initial position offset after the pin holes are matched, and the initial position of the longitudinal movable table 301 is reset under the driving of the transverse driving motor 307 and the longitudinal driving motor 308. The sensing displacement sensor 311 is installed on the top surface of the longitudinal moving stage, and is used for judging the size of the positioning pin entering the hole of the measured piece 108 when the positioning pin 310 moves to the upper end of the positioning hole of the measured piece 108 on the longitudinal moving stage 301 and performs the vertical movement action, so as to prevent the deformation of the measured piece 108 caused by the extrusion of the measured piece. The traverse drive motor 307 and the longitudinal drive motor 308 each employ a large reduction ratio gear motor and drive the longitudinal movement stage 301 and the traverse movement stage 311 to move in accordance with a given motion in cooperation with a small lead screw.
Referring to fig. 4, the working method of the device for vertically measuring the profile of the elongated piece with high precision comprises the following steps: the rapid positioning assembly 3 resets and moves the top of the measured piece 108 to a higher position. The bottom of the measured piece 108 is firstly mounted on the measured piece mounting table 103 in a hoisting manner, then the displacement of the initial position where the top of the measured piece deviates is calculated by utilizing the collected edge information of the measured piece 108 of the digital CCD303 mounted on the longitudinal moving table 301, and the longitudinal moving table 301 performs two-dimensional movement in the horizontal plane under the driving of the transverse driving motor 307 and the longitudinal driving motor 308, so that the position of the positioning pin 310 mounted on the longitudinal moving table 301 is aligned with the pin hole position of the top of the measured piece 108. The quick positioning assembly 3 moves downwards under the guide of the guide rail 104, contacts the top surface of the measured piece 108 through the induction displacement sensor 311 arranged on the longitudinal moving table 301, further judges the size of the positioning pin entering the hole of the measured piece, and stops after reaching the target position. The longitudinal displacement platform 301 is driven by the transverse driving motor 307 and the longitudinal driving motor 308 to perform two-dimensional reset motion in the horizontal plane, so that the positions of the upper pin hole and the lower pin hole are in the same initial position, the initial axis or the central line of the measured piece 108 is parallel to the measurement central line of the measuring device, and the aim of mounting and aligning the measured piece 108 is achieved.
After the measured piece 108 is installed in place, the dimension measurement of the outline of the measured piece starts to be carried out, firstly, the multi-dimension measurement assembly 2 moves to the standard device with the position measurement of the measured piece mounting table 103 consistent with the cross section shape of the measured piece under the drive of the multi-dimension measurement assembly mounting table 106, and further the reset measurement and the self calibration of the measurement device are realized. Then the multi-dimension measuring assembly 2 moves to the section position of the measured piece to be measured under the driving of the multi-dimension measuring assembly mounting table 106 to execute measuring work, the high-precision displacement sensor 201 reaches the vicinity of the surface of the measured piece under the driving of the radial precision displacement table 202, so that the measuring surface enters the measuring range of the high-precision displacement sensor 201 and executes measuring work, meanwhile, data of the high-precision displacement sensor 201, data of a grating scale on the radial precision displacement table 203, data of a transverse displacement table 204 and data of a rotary circular grating disk 211 are collected, polar coordinate data are calculated, and then the space coordinate value of the surface of the measured piece 108 can be calculated by combining the data of the grating scale of the multi-dimension measuring assembly mounting table 106. If the section of the measured piece is circular, the transverse scanning displacement table 204 drives the radial precise displacement table 203 to move to find the diameter inflection point position, and then the hollow rotating shaft 205 performs a rotating action to obtain the data of the section profile of the measured piece 108. If the section of the measured piece 108 is quadrilateral or hexagonal, the high-precision displacement sensor 201 is driven by the radial precision displacement table 203 to reach the vicinity of the surface of the measured piece 108, so that after the measurement surface enters the measurement range of the high-precision displacement sensor 201, the transverse scanning displacement table 204 is required to drive the radial precision displacement table 203 to move to acquire the data of the single surface with different sections, and after the acquisition is completed, the measurement tool can be completed after the data is moved to other surfaces until all the data are acquired. The two problems of the multi-dimension measuring assembly 2 moving at different measuring positions under the drive of the multi-dimension measuring assembly mounting table 106 and then performing the rotation section measurement exist, namely, at different section measuring positions, the deflection and straightness errors of the measuring assembly mounting table 106 introduced by the guide rail exist; secondly, radial errors are introduced by the hollow rotation, so that the measurement accuracy of the outline of the elongated measured piece 108 is affected. For this purpose, a reference ring gauge 214 fixed on the multi-size measuring assembly mounting table 106 is designed on the outer side independent of the hollow rotating shaft 205, and two position compensation precision displacement sensors 213 are designed on the hollow rotating shaft 205 in the direction perpendicular to the motion of the transverse scanning displacement table 204, wherein the two position compensation precision displacement sensors 213 are symmetrically distributed at the bottom of the hollow rotating shaft 205, and the rotation radial error caused by the large-diameter bearing 212 can be realized by measuring the reference ring gauge 214; two fixedly mounted laser position sensors PSD206 are designed behind the reference ring gauge 214 for receiving laser light from the two yaw correction collimator lasers 102 to compensate for linearity and yaw of the multi-size measurement assembly mounting stage 106.
Referring to fig. 5, the straightness and yaw angle calculation method is as follows: the oxy is a measurement coordinate system of the laser position sensor PSD corresponding to the left yaw correction collimation laser, o ' x ' y ' is a measurement coordinate system of the laser position sensor PSD corresponding to the right yaw correction collimation laser, the position relationship of the two straightness measurement laser position sensors PSD is obtained through linear motion calibration in advance, and the position relationship [ x 0,y0, alpha ] between the two coordinate systems of the laser position sensor PSD is obtained. The initial laser measurement point p 1 has a coordinate (x 1,y1) in oxy, and the straightness and rotation gesture measurement module has a coordinate (x 2,y2) in o ' x ' y ' of the laser measurement point p 2 after the displacement platform moves a distance; the initial laser measurement point p ' 1 has a coordinate (x ' 1,y′1) within o ' x ' y ', and the laser implemented multi-dimensional measurement assembly mount has a coordinate (x ', y ') within o ' x ' y ' of laser measurement point p ' 2 after the displacement stage has been moved a distance. Because the two laser position sensors PSD are fixed in position, the two laser position sensors PSD measurement coordinate systems are fixed in relation, so that the measurement data in one laser position sensor PSD coordinate system is converted into the other laser position sensor PSD coordinate system for the convenience of calculation, and then according to the coordinate system conversion principle, the coordinate of p' 1 in oxy is (the coordinate of x 0+x′1cosα-y′1sinα,y0+x′1sinα+y′1cosα),p′2 in oxy is (x 0+x′2cosα-y′2sinα,y0+x′2sinα+y′2 cos α), and then the rotation angle is:
after the laser realizes the movement of the multi-dimension measuring component mounting table, the position offset of p 2 relative to p 1 is (x 2-x1,y2-y1), and the position straightness deflection data of the multi-dimension measuring component mounting table is compared with the position data of the initial measuring standard device by different lasers and is compensated into the section measuring data, so that the measuring precision of the whole measuring device is improved.
While the foregoing detailed description has described the objects, aspects and advantages of the invention in further detail, it should be understood that the foregoing description is only illustrative of the invention, and is intended to cover various modifications, equivalents, alternatives, and improvements within the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a vertical device of measuring elongate member appearance profile of high accuracy which characterized in that: the device mainly comprises a vertical reference guiding movement assembly (1), a multi-dimension measuring assembly (2), a rapid positioning assembly (3) and a movement control system; the vertical reference guide movement assembly (1) is a basis of measurement guide of the whole set of measurement devices and is used for providing accurate guide driving and deflection correction collimation laser for the multi-size measurement assembly (2) and the rapid positioning assembly (3); the multi-dimension measuring assembly (2) is used for realizing precise measurement of cross section outline dimensions of different vertical measuring positions of the measured piece (108) under the guiding drive of the vertical reference guiding movement assembly (1); the rapid positioning assembly (3) is used for adapting to the requirements of the measured pieces (108) with different heights, and realizing the automatic auxiliary positioning of the measured pieces (108) under the guide drive of the vertical reference guide movement assembly (1); the motion control system is used for motion control of the system and acquisition and calculation of data;
The vertical reference guiding movement assembly mainly comprises a base (101), a deflection correction collimation laser (102), a measured piece mounting table (103), a guide rail (104), a vertical back frame (105), a multi-dimension measurement assembly mounting table (106), a screw rod (109), a quick positioning assembly mounting table (110), a counterweight pulley (111), a counterweight (107) and a grating ruler; the base (101) is a foundation borne by the measuring device and is used for connecting the vertical back frame (105) and the measured piece mounting table (103), so that the fixing with the foundation is realized, and the stability of the measuring device is ensured; the two deflection correction collimation lasers (102) are arranged on the base (101), and through two vertical laser references and matching with the two laser position sensors PSD (206), the real-time acquisition of the torsion pendulum size and straightness data of the multi-size measurement assembly mounting table (106) is realized, and torsion pendulum and straightness errors are further compensated; two precise linear guide rails (104) are arranged on a vertical back frame (105) and used for providing references for guiding a multi-size measuring assembly mounting table (106) and a quick positioning assembly mounting table (110); the positions of the multi-size measuring component mounting table (106) and the quick positioning component mounting table (110) are measured through a grating ruler arranged on the vertical back frame (105); the screw rod (109) is fixedly arranged on the vertical back frame (105), and a screw rod nut is matched with a hollow turbine worm reducer arranged behind the multi-size measuring assembly mounting table (106) and the quick positioning assembly mounting table (110), so that the screw rod is fixed to rotate and then the multi-size measuring assembly mounting table (106) and the quick positioning assembly mounting table (110) are driven to guide the same group of guide rails at different positions; the counterweight pulley (111) is used for realizing the weight balancing of the multi-size measurement assembly mounting table (106) and the quick positioning assembly mounting table (110) through steel wires and is connected with the counterweight (107) behind the vertical back frame (105), so that the running stability and safety are improved; the measured piece mounting table (103) is used for mounting a measured piece (108), is provided with standard devices with different steps of quadrangle, hexagon and circle, and is used for realizing the bottom positioning of the measured piece (108) and the self calibration of the measuring device.
2. A device for high precision vertical measurement of the profile of an elongated member as set forth in claim 1, wherein: the multi-dimension measuring assembly (2) mainly comprises a high-precision displacement sensor (201), a high-precision displacement sensor mounting seat (202), a radial precision displacement table (203), a transverse scanning displacement table (204), a hollow rotating shaft (205), a laser position sensor PSD (206), a driving motor (207), a friction driving piece (208), a connecting disc (209), a friction driving disc (210), a rotary circular grating disc (211), a precision bearing (212), a position compensation precision displacement sensor (213) and a reference ring gauge (214); the high-precision displacement sensor (201) adopts a non-contact method to realize the acquisition of the section profile data of the measured piece; the radial precision displacement table (203) is mainly used for expanding the measurement range of the high-precision displacement sensor (201) and realizing the measurement of measured pieces (108) with different diameter sizes through rotation; the transverse scanning displacement table (204) is used for carrying the high-precision displacement sensor (201) and the radial precision displacement table (203) to integrally and transversely move, so that the acquisition of single-side surface data of a quadrangular or hexagonal section slender measured piece (108) is realized, and the measurement of the sizes of the rest sections is realized through rotation; the hollow rotating shaft (205) is independent of the reference ring gauge (214) and is fixedly connected with the friction driving disc (210) and the rotary circular grating disc (211), is arranged on the connecting disc (209) through a precision bearing (212), and realizes rotation and positioning under the feedback of the rotation data of the rotary circular grating disc (211) under the driving of the driving motor (207) and the friction driving piece (208), so as to finish the measurement action; the two position compensation precision displacement sensors (213) are fixedly arranged behind the reference ring gauge (214) and are used for receiving laser from the two deflection correction collimation lasers (102) to realize the compensation of straightness and deflection errors of the measured piece (108); two position compensation precision displacement sensors (213) are symmetrically distributed at the bottom of the hollow rotating shaft (205), and the two position compensation precision displacement sensors realize the compensation of the rotating radial error caused by the large-diameter crossed roller bearing through a measuring reference ring gauge (214).
3. A device for high precision vertical measurement of the profile of an elongated member as set forth in claim 2, wherein: the rapid positioning assembly (3) mainly comprises a longitudinal moving table (301), a digital CCD (302), a longitudinal grating (303), a transverse moving table (304), a transverse grating (305), a transverse guide rail (306), a transverse driving motor (307), a longitudinal driving motor (308), a longitudinal guide rail (309), a positioning pin (310) and an induction displacement sensor (311); the longitudinal moving table (301) is used for installing an induction displacement sensor (311) and two precise positioning pins (310), and under the guidance of the transverse guide rail (306) and the longitudinal guide rail (309), the matching of pin holes and the resetting of the top end of the tested piece (108) are realized according to the collected edge information of the tested piece (108) of the digital CCD (302), so that the small positioning surface on the bottom surface of the elongated tested piece (108) is prevented from causing the offset of the top of the elongated piece; in addition, the positioning plate is matched with the two pin holes, so that the positioning matching of the tops of different types of measured pieces (108) can be realized, and the initial positioning is further realized; the two diagonally-mounted digital CCDs (302) are used for acquiring the top size of the tested piece (108), acquiring the edge size and further acquiring the pin hole position, and realizing pin hole matching; the transverse moving platform (304) is used for installing the longitudinal moving platform (301) through the longitudinal guide rail (309), so that the transverse movement of the longitudinal moving platform (301) is realized, the aim of two-dimensional movement of the longitudinal moving platform (301) is fulfilled, and pin holes are aligned conveniently; the longitudinal grating (303) and the transverse grating (305) can record the positions of the pins corresponding to the mounting table pins of the bottom tested piece by adopting grating scales, and then the initial position offset is fed back after pin hole matching is completed, and the reset of the initial position of the longitudinal movable table (301) is realized under the driving of the transverse driving motor (307) and the longitudinal driving motor (308); the induction displacement sensor (311) is arranged on the top surface of the longitudinal moving table and is used for judging the size of the positioning pin entering the hole of the measured piece (108) when the positioning pin (310) moves to the upper end of the positioning hole of the measured piece (108) in the longitudinal moving table (301) and performs vertical movement action, so as to prevent the deformation of the measured piece (108) caused by extrusion of the measured piece; the transverse driving motor (307) and the longitudinal driving motor (308) both adopt large reduction ratio speed reducing motors and drive the longitudinal moving table (301) and the transverse moving table (304) to move according to given actions in cooperation with small lead screws.
4. A device for high precision vertical measurement of the profile of an elongated member as set forth in claim 3, wherein: the working method is that the rapid positioning component (3) resets and moves at a position higher than the top position of the measured piece (108); firstly, mounting the bottom of a tested piece (108) on a tested piece mounting table (103) in a hoisting manner, then calculating the displacement of the top of the existing tested piece at the initial position by utilizing the edge information of the tested piece (108) acquired by a digital CCD (302) mounted on a longitudinal moving table (301), and performing two-dimensional movement in the horizontal plane by the longitudinal moving table (301) under the driving of a transverse driving motor (307) and a longitudinal driving motor (308), so that the position of a positioning pin (310) mounted on the longitudinal moving table (301) is aligned with the pin hole position of the top of the tested piece (108); the quick positioning assembly (3) moves downwards under the guide of the guide rail (104), and contacts the top surface of the tested piece (108) through an induction displacement sensor (311) arranged on the longitudinal moving table (301), so that the size of the positioning pin entering the hole of the tested piece is judged, and the positioning pin stops until reaching the target position; the longitudinal moving table (301) is driven by the transverse driving motor (307) and the longitudinal driving motor (308) to perform two-dimensional reset motion in the horizontal plane, so that the positions of the upper pin hole and the lower pin hole are in the same initial position, the initial axis or the central line of the measured piece (108) is parallel to the measurement central line of the measuring device, and the aim of mounting and aligning the measured piece (108) is fulfilled;
After the measured piece (108) is installed in place, the dimension measurement of the outline of the measured piece is started, firstly, the multi-dimension measurement assembly (2) moves to a standard device with the position measurement of the measured piece mounting table (103) consistent with the section shape of the measured piece under the drive of the multi-dimension measurement assembly mounting table (106), and then the reset measurement and the self calibration of the measurement device are realized; then the multi-dimension measuring assembly (2) moves to the section position of the measured piece to be measured under the drive of the multi-dimension measuring assembly mounting table (106) to execute measuring work, the high-precision displacement sensor (201) reaches the vicinity of the surface of the measured piece under the drive of the radial precision displacement table (203), so that the measuring surface enters the measuring range of the high-precision displacement sensor (201) and executes measuring work, meanwhile, data of the high-precision displacement sensor (201), grating ruler data on the radial precision displacement table (203), transverse scanning displacement table (204) data and rotary circular grating disk (211) are collected, polar coordinate data are calculated, and then the space coordinate value of the surface of the measured piece (108) can be calculated by combining the data of the grating ruler of the multi-dimension measuring assembly mounting table (106); if the section of the measured piece is circular, the transverse scanning displacement table (204) drives the radial precise displacement table (203) to move to find the diameter inflection point position, the measured piece can be fixed, and then the hollow rotating shaft (205) performs rotating action to obtain the data of the section profile of the measured piece (108); if the section of the measured piece (108) is quadrilateral or hexagonal, the high-precision displacement sensor (201) is driven by the radial precision displacement table (203) to reach the vicinity of the surface of the measured piece (108), so that the measurement surface enters the measurement range of the high-precision displacement sensor (201), the radial precision displacement table (203) is driven by the transverse scanning displacement table (204) to move to acquire the data of single surfaces with different sections, and the measured piece is moved to other surfaces after the acquisition is completed until all the data are acquired, namely, the measurement tool is completed, and the high-precision vertical measurement of the profile of the elongated piece is realized.
5. A device for high precision vertical measurement of the profile of an elongated member as set forth in claim 4, wherein: a reference ring gauge (214) which is fixed on the multi-size measuring assembly mounting table (106) is designed on the outer side independent of the hollow rotating shaft (205), two position compensation precision displacement sensors (213) are arranged on the hollow rotating shaft (205) in the direction perpendicular to the motion direction of the transverse scanning displacement table (204), the two position compensation precision displacement sensors (213) are symmetrically distributed at the bottom of the hollow rotating shaft (205), and the rotating radial error caused by a large-diameter crossed roller bearing can be realized through measuring the reference ring gauge (214); two fixedly mounted laser position sensors PSD (206) are arranged behind the reference ring gauge (214) and are used for receiving laser from two deflection correction collimation lasers (102) to realize the linearity and deflection compensation of the multi-size measurement assembly mounting table (106).
6. A device for high precision vertical measurement of the profile of an elongated member as set forth in claim 5, wherein: the straightness and deflection angle calculation method comprises the following steps that oxy is a measurement coordinate system of a laser position sensor PSD corresponding to a left deflection correction collimation laser, o ' x ' y ' is a measurement coordinate system of a laser position sensor PSD corresponding to a right deflection correction collimation laser, the position relationship of the two straightness measurement laser position sensors PSD is obtained through linear motion calibration in advance, and the position relationship [ x0, y0, alpha ] between the two coordinate system laser position sensors PSD is obtained, so that a unified coordinate system is required to be established for calculation conveniently; the initial laser measurement point p 1 has a coordinate (x 1,y1) in oxy, and the straightness and rotation gesture measurement module has a coordinate (x 2,y2) in o ' x ' y ' of the laser measurement point p 2 after the displacement platform moves a distance; the initial laser measurement point p ' 1 has a coordinate (x ' 1,y′1) in o ' x ' y ', and the laser-implemented multi-size measurement component mounting table has a coordinate (x ', y ') in o ' x ' y ' of the laser measurement point p ' 2 after the displacement table is moved a distance; because the two laser position sensors PSD are fixed in position, the two laser position sensors PSD measurement coordinate systems are fixed in relation, so that the measurement data in one laser position sensor PSD coordinate system is converted into the other laser position sensor PSD coordinate system for the convenience of calculation, and then according to the coordinate system conversion principle, the coordinate of p '1 in oxy is (the coordinate of x 0+x′1cosα-y′1sinα,y0+x′1sinα+y′1cosα),p′2 in oxy is (x 0+x′2cosα-y2′sinα,y0+x2′sinα+y2' cos α), and then the rotation angle is:
After the laser realizes the movement of the multi-dimension measuring component mounting table, the position offset of p 2 relative to p 1 is (x 2-x1,y2-y1), and the position straightness deflection data of the multi-dimension measuring component mounting table is compared with the position data of the initial measuring standard device by different lasers and is compensated into the section measuring data.
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| CN117629065B (en) * | 2023-11-24 | 2025-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | A deep hole measuring device for nuclear power steam generator tube sheet |
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| CN202471019U (en) * | 2011-12-20 | 2012-10-03 | 河南科技大学 | Measuring instrument for revolving body part |
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| CN113970299A (en) | 2022-01-25 |
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