CN114264251A - Automatic aligning and leveling workbench and cross arm radial measurement size calibration method - Google Patents
Automatic aligning and leveling workbench and cross arm radial measurement size calibration method Download PDFInfo
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- CN114264251A CN114264251A CN202111661079.9A CN202111661079A CN114264251A CN 114264251 A CN114264251 A CN 114264251A CN 202111661079 A CN202111661079 A CN 202111661079A CN 114264251 A CN114264251 A CN 114264251A
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Abstract
The invention discloses an automatic aligning and leveling workbench and a cross arm radial measurement size calibration method, mainly relating to the technical field of measurement equipment, comprising two groups of electric aligning devices and two groups of electric leveling devices, and a centering leveling auxiliary device matched with the centering leveling auxiliary device, wherein the centering device and the leveling device are electrically driven and controlled, so that the control precision of the equipment during adjustment is greatly improved, the leveling and aligning efficiency is improved, the standard component for automatically calibrating the reference position during measurement is directly arranged in the worktable, the function of calibrating the radial measurement size of the cross arm during measurement can be realized, the requirement of precisely measuring the distance between each measuring point and the revolving axis of the worktable during measurement of the overall dimension and the calculated dimension of the cylinder is met, and the problems of low adjustment precision, low detection efficiency, no reference position calibration function and complex equipment structure during detection in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of measuring equipment, in particular to an automatic aligning and leveling workbench for measuring the overall dimension of a cylinder and a cross arm radial measurement dimension calibration method.
Background
In ISO14405-1 and GB/T GB/T38762.1, for cylindrical parts, the local dimensions (including two-point dimensions, spherical dimensions, cross-sectional dimensions and partial dimensions), the direct global dimensions (including least squares diameter, minimum circumscribed diameter, maximum inscribed diameter and minimum area diameter) and the calculated dimensions are specified. Both the direct global dimension and the calculated dimension for the cylinder can be performed on a measuring instrument based on a cylindrical coordinate system. The measured cylinder is placed on a rotary worktable of a measuring instrument based on a cylindrical coordinate system, the measured cylinder needs to be subjected to centering and leveling before outline elements are extracted, the centering aims to enable the deviation between the circle center of the measured cylinder close to the circular section outline of the worktable and the axis of the rotary worktable to be as small as possible, and the leveling aims to enable the axis of the measured cylinder to be parallel to the rotary axis of the rotary worktable as possible. In order to improve the efficiency and the precision of the aligning and leveling and reduce the workload of testers, automatic aligning and leveling are adopted. On the other hand, the aligning and leveling workbench has a radial dimension calibration function. In the cylindricity error and roundness error measuring instrument, because the cylindricity error and the roundness error are the radius difference of the contour, the dimension between each measuring point on the contour and the rotary axis of the rotary worktable does not need to be accurately measured, and only the radial relative variation of each point of the contour needs to be accurately measured. According to the definition of the overall dimension and the calculated dimension of the cylinder, the distance between each point of the outline and the rotating axis of the rotary worktable needs to be precisely measured, so that a high-precision hole is arranged on the rotary worktable and is used for calibrating the overall dimension of the cylinder and the radial dimension of a cross arm of a calculated dimension measuring instrument.
The centering and leveling workbench is a key part of a cylinder overall dimension and calculation dimension and geometric error measuring instrument, is connected with a high-precision gas static pressure main shaft and is mainly used for adjusting the eccentricity and inclination of a measured cylinder and calibrating the radial dimension of a cross arm; at present, home and abroad centering and leveling workbenches are mainly divided into manual and automatic leveling workbenches, and although manual adjustment is simple in structure and low in manufacturing cost, adjustment accuracy and efficiency are low. The automatic centering and leveling workbench is complex in structure, can only be used for measuring cylindricity errors and roundness errors, does not have the function of calibrating the radial dimension of the cross arm, and cannot meet the requirement of precisely measuring the distance between each measuring point and the rotary axis of the workbench during measurement of the overall dimension and the calculated dimension of the cylinder.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides an automatic aligning and leveling workbench for measuring the overall dimension of a cylinder and a cross arm radial measurement dimension calibration method, which solve the problems of low adjustment precision, low detection efficiency, no reference position calibration function and complex equipment structure in detection in the prior art.
The technical scheme of the invention is realized as follows: the utility model provides an automatic aligning and leveling workbench, includes the base, and the base is connected with the shell, is provided with intermediate junction post and aligning ball dish on the base, and the equipartition has the ball on the aligning ball dish, and intermediate junction post and aligning ball dish clearance fit set up, the portable intermediate mounting dish that is provided with in aligning ball dish top, intermediate mounting dish and ball roll connection, fixed two sets of electronic aligning device and two sets of electronic levelling device of being equipped with on the intermediate mounting dish, fixed being equipped with on the intermediate junction post by the push pedal, electronic aligning device with cooperate by the push pedal, still fixed being equipped with a set of aligning and leveling auxiliary device on the intermediate mounting dish, aligning and leveling auxiliary device with be connected by the push pedal, be connected with the workstation mesa on electronic levelling device and the aligning and leveling auxiliary device, be provided with the standard component that is used for when realizing measuring automatic calibration reference position on the workstation mesa.
Preferably, the standard part is matched with a cylindrical groove arranged at the center of the table top of the workbench, a standard hole is formed in the standard part, a table top cover covering the cylindrical groove is arranged outside the standard part, and the table top cover is in threaded connection with the table top of the workbench.
Preferably, the two groups of electric aligning devices are fixedly arranged on the middle mounting plate at an included angle of 90 degrees; the aligning and leveling auxiliary device and the two groups of electric aligning devices are arranged in an included angle of 45 degrees; the aligning leveling auxiliary devices and the two groups of electric leveling devices are distributed on the middle mounting plate in an equilateral triangle manner, and the symmetric centers of the aligning leveling auxiliary devices and the two groups of electric leveling devices are positioned on the central axis of the middle mounting plate; the workbench top is detachably arranged on the aligning leveling auxiliary device and the two groups of electric leveling devices.
Preferably, electronic aligning device includes electronic aligning box, and electronic aligning box one end is passed through aligning baffle and middle mounting disc fixed connection, and electronic aligning box is inside to be provided with first drive mechanism, and first drive mechanism one end is connected with the first drive arrangement transmission that sets up in electronic aligning box one side, and the first drive mechanism other end passes electronic aligning box and is connected by the push pedal.
Preferably, first drive mechanism includes the worm that is connected with first drive arrangement and the worm wheel that sets up with the worm cooperation, and the worm wheel is fixed to be established on the ball that rotates with electronic aligning box and be connected, and the transmission is connected with ball flange nut on the ball, and fixed aligning stationary rail who is connected with electronic aligning box slide that is equipped with on the ball flange nut, aligning stationary rail with by the push pedal cooperation.
Preferably, the electric leveling device comprises an electric leveling box body, the electric leveling box body is arranged on the middle mounting plate, a second transmission mechanism is arranged inside the electric leveling box body, one end of the second transmission mechanism is in transmission connection with a second driving device arranged on one side of the electric leveling box body, the other end of the second transmission mechanism penetrates through the electric leveling box body to be connected with a top bead seat, a leveling top bead is arranged on the top bead seat, and the leveling top bead is matched with the table top of the working table.
Preferably, the second transmission mechanism comprises a worm connected with the second driving device, a worm wheel is arranged in a matching manner with the worm, the worm wheel is fixedly arranged on a ball screw rotatably connected with the electric leveling box body, a ball flange nut is in transmission connection with the ball screw, a leveling fixing guide rail in sliding connection with the electric leveling box body is fixedly arranged on the ball flange nut, and the leveling fixing guide rail is matched with the ball ejecting seat.
Preferably, the electric leveling box body is fixedly provided with a spring support, and the spring support is detachably connected with the workbench surface through a spring.
Preferably, the aligning and leveling auxiliary device comprises an auxiliary steel ball support fixedly arranged on the middle mounting plate, an auxiliary steel ball is arranged on the auxiliary steel ball support, a pre-tightening spring is arranged between the auxiliary steel ball support and the pushed plate, and the auxiliary steel ball and the two leveling top balls are arranged in an equilateral triangle.
A cross arm radial measurement size calibration method of a centering and leveling workbench comprises the following steps:
s1, arranging the aligning and leveling workbench for measuring the overall dimension of the cylinder on a turntable with a cross arm, wherein the cross arm is provided with a measuring head and an X-axis beam grating ruler;
s2, opening the upper cover of the table board, extending the measuring head on the cross arm into the standard hole of the standard part, and attaching the measuring head on the side wall of the standard hole;
s3, rotating the aligning leveling workbench by a circle through the turntable, simultaneously sampling n points by the measuring head at equal angular intervals, wherein the system reading of the measuring head at the sampling point is delta i, and the reading of the corresponding X-axis beam grating ruler is Gs, and then the average distance value between the measuring head and the rotation center of the workbench
The average distance between the measuring head and the rotating center of the workbench is the calibration value of the radial measurement size of the cross arm.
And S4, inputting the calibration value into the measuring instrument to finish calibration, and compensating the error of the measuring instrument through the calibration value when the measuring instrument performs the global dimension measurement.
The invention has the beneficial effects that: according to the invention, through two groups of electric centering devices, two groups of electric leveling devices and a centering and leveling auxiliary device matched with the electric centering devices, the centering devices and the leveling devices are electrically driven and controlled, the control precision during equipment adjustment is greatly improved, the leveling and centering efficiency is also improved, and a standard component for realizing automatic reference position calibration during measurement is directly arranged on the surface of the workbench, so that the function of calibrating the radial measurement size of the cross arm during measurement can be realized, the requirement of precisely measuring the distance between each measuring point and the rotary axis of the workbench during measurement of the overall size and the calculated size of the cylinder is met, and the problems of low adjustment precision, low detection efficiency, no reference position calibration function and complex equipment structure in the prior art during detection are solved.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic diagram of a standard block position according to the present invention;
FIG. 3 is a schematic view of a portion of the present invention;
FIG. 4 is a schematic perspective view of a display device according to the present invention;
FIG. 5 is a schematic view of an electric aligning apparatus according to the present invention;
FIG. 6 is a schematic structural view of an electric leveling device according to the present invention;
FIG. 7 is a schematic view of the structure of the aligning ball tray of the present invention;
in the figure: 1: base, 2: outer shell, 3: middle connecting column, 4: aligning ball plate, 5: intermediate mounting plate, 6: electric centering device, 7: electric leveling device, 8: aligning leveling auxiliary device, 9: table top of the working table, 10: standard, 11: mesa upper cover, 12: electric aligning box body, 13: aligning baffle, 14: first driving device, 15: pushed plate, 16: worm, 17: worm wheel, 18: ball screw, 19: ball flange nut, 20: aligning fixed guide, 21: electric leveling box body, 22: second driving device, 23: bead seat, 24: leveling top bead, 25: leveling fixed guide rail, 26: spring support, 27: spring, 28: auxiliary steel ball support, 29: pre-tightening spring, 30: and (5) auxiliary steel balls.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, 2, 3, 4, and 7, in embodiment 1, an automatic aligning and leveling workbench is used for measuring the overall dimension of a cylinder, and includes a base 1, the base 1 is connected with a housing 2, the base 1 is provided with a middle connecting column 3 and an aligning ball disk 4, specifically, the middle connecting column 3 is fixedly arranged at the rotation center of the base 1, the base 1 is provided with guide pillars, preferably four guide pillars, an array is arranged on the base 1, the aligning ball disk 4 is an annular disk, the aligning ball disk 4 is provided with a clamping groove in cooperation with the guide pillars, and the aligning ball disk 4 is arranged on the base 1 in cooperation with the guide pillars through the clamping groove; the center-adjusting ball disc 4 is uniformly provided with balls, the middle connecting column 3 and the center-adjusting ball disc 4 are arranged in a clearance fit manner, the middle mounting disc 5 is movably arranged above the center-adjusting ball disc 4, the middle mounting disc 5 is in rolling connection with the balls, sliding friction is replaced by rolling friction, resistance is reduced, errors and resistance applied during adjustment are reduced to a certain extent, and therefore center-adjusting precision is improved; two groups of electric centering devices 6 and two groups of electric leveling devices 7 are fixedly arranged on the middle mounting plate 5, and the electric centering devices and the electric leveling devices are electrically driven and controlled, so that the control precision during equipment adjustment is greatly improved, and the leveling and centering efficiency is also improved; the middle connecting column 3 is fixedly provided with a pushed plate 15, the electric aligning device 6 is matched with the pushed plate 15, the middle mounting plate 5 is also fixedly provided with a group of aligning and leveling auxiliary devices 8, the aligning and leveling auxiliary devices 8 are connected with the pushed plate 15, the electric leveling device 7 and the aligning and leveling auxiliary devices 8 are connected with a workbench table surface 9, and the workbench table surface 9 is provided with a standard part 10 for automatically calibrating a reference position during measurement, so that the function of calibrating the radial measurement size of the cross arm can be realized during measurement, the requirement of precisely measuring the distance between each measuring point and the rotary axis of the workbench during measurement of the overall size and the calculated size of the cylinder is met, and the problems of low adjustment precision, low detection efficiency, no reference position calibration function and complex equipment structure in detection in the prior art are solved.
When the embodiment is applied, one end of each of the two groups of electric aligning devices 6 is fixedly arranged on the middle mounting plate 5, the other end of each of the two groups of electric aligning devices is matched with the pushed plate 15, the pushed plate 15 is fixed on the base 1, when the center needs to be adjusted, the two groups of electric aligning devices 6 push the self-body and the middle mounting plate 5 to drive the balls to roll under the control of the motor and the reverse acting force generated by the push plate 15, the balls roll in situ under the limitation of the aligning ball plate 4, thereby moving the position of the middle mounting plate 5, the worktable table surface 9 is connected with the middle mounting plate 5 through the electric leveling device 7 and the aligning leveling auxiliary device 8, the middle mounting plate 5 moves to drive the worktable table surface 9 to move, when the two groups of electric centering devices 6 contract, the centering leveling auxiliary devices 8 are drawn close to the distance between the worktable surface 9 and the pushed plate 15, so that the electric centering devices 6 are always in contact with the pushed plate 15; when the adjustment is needed, the two groups of electric aligning devices 6 push the workbench table surface 9 connected with the electric aligning devices to perform angle adjustment under the electric control; when the cross arm radial dimension reference needs to be calibrated, calibration is carried out by using the standard part 10 through a measuring head for calibration.
When the embodiment is applied, the table top cover 11 is rotated to move away, the measuring head for calibration extends into the surface of the standard hole, and the absolute distance between the measuring head and the rotating axis of the workbench is calibrated by recording the reading Sa of the measuring head and the reading Gs of the X-axis beam grating scale, so that the function of calibrating the radial measurement size of the cross arm is achieved.
When the embodiment is applied and needs to be aligned, two groups of electric aligning devices 6 which are arranged at 90 degrees can respectively control the middle mounting plate 5 to move along the direction of a plane X shaft and the direction of a plane Y shaft, the aligning and leveling auxiliary device 8 can apply certain pretightening force between the pushed plate 15 and the middle mounting plate 5 in the aligning process, meanwhile, the aligning and leveling auxiliary device 8 is used as one of the supporting devices of the workbench table top 9 and forms a support for the workbench table top 9 together with the two groups of electric leveling devices 7, and when the aligning is needed, the workbench table top 9 is adjusted by mutually matching the two groups of electric leveling devices 7 through electric control.
As shown in fig. 5, in embodiment 4, based on embodiment 3, the electric aligning device 6 includes an electric aligning box 12, one end of the electric aligning box 12 is fixedly connected to the intermediate mounting plate 5 through an aligning baffle 13, specifically, is connected to the intermediate mounting plate 5 through a bolt; a first transmission mechanism is arranged in the electric aligning box body 12, one end of the first transmission mechanism is in transmission connection with a first driving device 14 arranged on one side of the electric aligning box body 12, and the other end of the first transmission mechanism penetrates through the electric aligning box body 12 to be connected with a pushed plate 15; the method specifically comprises the following steps: the first transmission mechanism comprises a worm 16 connected with the first driving device 14, a worm wheel 17 is arranged in cooperation with the worm 16, the worm wheel 17 is fixedly arranged on a ball screw 18 rotatably connected with the electric aligning box body 12, a ball flange nut 19 is arranged on the ball screw 18 in a transmission connection mode, an aligning fixed guide rail 20 in sliding connection with the electric aligning box body 12 is arranged on the ball flange nut 19, the other end of the aligning fixed guide rail 20 is in contact with a pushed plate 15, the scheme adopts the high-precision worm wheel 17 with the large reduction ratio and the locking function, the worm 16 and the ball screw 18 are in transmission connection in a matching mode, a conventional pure screw adjusting and feeding mode is replaced, the adjusting resolution is improved, the adjusting precision is improved, meanwhile, the electric driving device is applied, full-automatic control over the aligning process is achieved, the response speed is high, and the control precision is high.
When the embodiment is applied, the first driving device 14 is electrically controlled, the first driving device 14 drives the worm 16 to rotate, the worm 16 drives the worm wheel 17 to rotate, the worm wheel 17 drives the ball screw 18 connected with the worm wheel to rotate, so as to drive the ball flange nut 19 to axially move along the ball screw 18, the aligning fixed guide rail 20 connected with the flange nut slides relative to the electric aligning box body 12, so that the pushed plate 15 is pushed to generate reverse acting force to realize aligning movement, or the aligning fixed guide rail 20 contracts towards the electric aligning box body 12, and the pushed plate 15 keeps in contact with the aligning fixed guide rail 20 under the action of the aligning auxiliary device to realize aligning movement.
As shown in fig. 6, in embodiment 5, based on embodiment 4, the electric leveling device 7 includes an electric leveling box 21, the electric leveling box 21 is disposed on the intermediate mounting plate 5, a second transmission mechanism is disposed inside the electric leveling box 21, one end of the second transmission mechanism is in transmission connection with a second driving device 22 disposed on one side of the electric leveling box 21, the other end of the second transmission mechanism penetrates through the electric leveling box 21 and is provided with a top bead seat 23, a leveling top bead 24 is disposed on the top bead seat 23, and the leveling top bead 24 is connected with the working table top 9; the method specifically comprises the following steps: the second transmission mechanism comprises a worm 16 connected with a second driving device 22, a worm wheel 17 is arranged in a matched manner with the worm 16, the worm wheel 17 is fixedly arranged on a ball screw 18 rotationally connected with an electric leveling box body 21, the ball screw 18 is provided with a ball flange nut 19 in a transmission connection manner, the ball flange nut 19 is provided with a leveling fixed guide rail 25 in sliding connection with the electric leveling box body 21, and the other end of the leveling fixed guide rail 25 is matched with a ball bearing seat 23; in addition, a spring support 26 is fixedly arranged on the electric leveling box body 21, the spring support 26 is detachably connected with the workbench table top 9 through a spring 27, a clamping groove matched with the spring 27 is formed in the workbench table top 9, a rubber cover is arranged above the clamping groove, one end of the spring 27 is fixedly connected with the spring support 26, the other end of the spring 27 is detachably connected with the clamping groove through a clamping rod in a matched mode, and a certain pre-tightening force can be exerted between the workbench table top 9 and the leveling jacking beads through the spring 27.
When the embodiment is applied, the second driving device 22 is electrically controlled, the second driving device 22 drives the worm 16 to rotate, the worm 16 drives the worm wheel 17 to rotate, the worm wheel 17 drives the ball screw 18 connected with the worm wheel 17 to rotate, so that the ball flange nut 19 is driven to axially move along the ball screw 18, the leveling fixed guide rail 25 connected with the flange nut slides relative to the electric leveling box body 21, the top ball seat 23 and the leveling top ball 24 are pushed to move, the top of the workbench table surface 9 is jacked up or the workbench table surface 9 descends, and the two groups of electric leveling devices 7 are matched to realize the adjustment of the workbench table surface 9.
In embodiment 6, based on embodiment 5, the aligning and leveling auxiliary device 8 includes an auxiliary steel ball support 28 fixedly disposed on the middle mounting plate 5, an auxiliary steel ball 30 is disposed on the auxiliary steel ball support 28, a pre-tightening spring 29 is disposed between the auxiliary steel ball support 28 and the pushed plate 15, and the auxiliary steel ball 30 and the two leveling top balls are disposed in an equilateral triangle.
When the embodiment is applied, a certain pretightening force can be applied between the pushed plate 15 and the auxiliary steel ball support 28 through the pretightening spring 29, so that the stability of the middle mounting plate relative to the pushed plate 15 is improved, and when the aligning fixed guide rail 20 contracts into the electric aligning box body 12 during aligning, the middle mounting plate is pulled to the pushed plate 15 under the action of the pretightening spring 29, so that the pushed plate 15 is in contact with the aligning fixed guide rail 20.
In embodiment 7, based on embodiment 6, the first driving device 14 and the second driving device 22 are both servo motors or stepping motors, the servo motor on the electric centering device 6 is fixedly arranged on the side wall of the electric centering box 12, and the servo motor on the electric leveling device 7 is fixedly arranged on the side wall of the electric leveling box 21.
A cross arm radial measurement size calibration method applying a centering and leveling workbench comprises the following processes:
s1, arranging the aligning and leveling workbench for measuring the overall dimension of the cylinder on a turntable with a cross arm, wherein the cross arm is provided with a measuring head and an X-axis beam grating ruler;
s2, opening the table top upper cover 11, extending the measuring head on the cross arm into the standard hole of the standard part 10, and attaching the measuring head on the side wall of the standard hole;
s3, rotating the aligning leveling workbench by a circle through the turntable, simultaneously sampling n points by the measuring head at equal angular intervals, wherein the system reading of the measuring head at the sampling point is delta i, the reading of the corresponding X-axis beam grating ruler is Gs, and then the average distance value between the measuring head and the rotation center of the workbench
The average distance between the measuring head and the rotating center of the workbench is the calibration value of the radial measurement size of the cross arm.
And S4, inputting the calibration value into the measuring instrument to finish calibration, and compensating the error of the measuring instrument through the calibration value when the measuring instrument performs the global dimension measurement.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an automatic aligning leveling workstation, includes base (1), and base (1) is connected with shell (2), is provided with intermediate junction post (3) and aligning ball dish (4) on base (1), and the equipartition has the ball on aligning ball dish (4), and intermediate junction post (3) and aligning ball dish (4) clearance fit set up its characterized in that: install tray (5) in the middle of portable being provided with in aligning ball dish (4) top, middle install tray (5) and ball roll connection, fixed two sets of electronic aligning device (6) and two sets of electronic levelling device (7) of being equipped with on middle install tray (5), fixed being equipped with is gone up in intermediate junction post (3) by push pedal (15), electronic aligning device (6) with cooperateed by push pedal (15), still fixed being equipped with a set of aligning levelling auxiliary device (8) on middle install tray (5), aligning levelling auxiliary device (8) with by push pedal (15) be connected, be connected with workstation mesa (9) on electronic levelling device (7) and aligning levelling auxiliary device (8), be provided with on workstation mesa (9) and be used for realizing standard component (10) of automatic calibration reference position when measuring.
2. The self-aligning leveling table according to claim 1, wherein: the standard part (10) is matched with a cylindrical groove arranged at the center of the workbench table top (9), a standard hole is formed in the standard part (10), a table top cover (11) covering the cylindrical groove is arranged outside the standard part (10), and the table top cover (11) is in threaded connection with the workbench table top (9).
3. Automatic aligning and leveling workbench according to claim 1 or 2, characterized in that: the two groups of electric aligning devices (6) are fixedly arranged on the middle mounting plate (5) in a 90-degree included angle; the aligning and leveling auxiliary device (8) and the two groups of electric aligning devices (6) are arranged in an included angle of 45 degrees; the aligning leveling auxiliary devices (8) and the two groups of electric leveling devices (7) are distributed on the middle mounting plate (5) in an equilateral triangle manner, and the symmetrical centers of the three devices are positioned on the central axis of the middle mounting plate (5); the workbench surface (9) is detachably arranged on the aligning leveling auxiliary device (8) and the two groups of electric leveling devices (7).
4. The self-aligning leveling table according to claim 3, wherein: electric aligning device (6) are including electronic aligning box (12), and electronic aligning box (12) one end is through aligning baffle (13) and middle mounting disc (5) fixed connection, and electronic aligning box (12) is inside to be provided with first drive mechanism, and first drive mechanism one end is connected with the transmission of first drive arrangement (14) of setting in electronic aligning box (12) one side, and the first drive mechanism other end passes electronic aligning box (12) and is connected by push pedal (15).
5. The self-aligning leveling table according to claim 4, wherein: first drive mechanism includes worm (16) that is connected with first drive arrangement (14) and worm wheel (17) that sets up with worm (16) cooperation, and worm wheel (17) are fixed to be established on ball (18) of being connected with electronic aligning box (12) rotation, and the driving connection has ball flange nut (19) on ball (18), and ball flange nut (19) are gone up fixed be equipped with aligning fixed guide (20) of being connected with electronic aligning box (12) slide, aligning fixed guide (20) with by push pedal (15) cooperate.
6. Automatic aligning and leveling workbench according to claim 4 or 5, characterized in that: the electric leveling device (7) comprises an electric leveling box body (21), the electric leveling box body (21) is arranged on the middle mounting plate (5), a second transmission mechanism is arranged inside the electric leveling box body (21), one end of the second transmission mechanism is in transmission connection with a second driving device (22) arranged on one side of the electric leveling box body (21), the other end of the second transmission mechanism penetrates through the electric leveling box body (21) to be connected with a top bead seat (23), a leveling top bead (24) is arranged on the top bead seat (23), and the leveling top bead (24) is matched with the workbench surface (9).
7. The self-aligning leveling table according to claim 6, wherein: the second transmission mechanism comprises a worm (16) connected with a second driving device (22), a worm wheel (17) is arranged in cooperation with the worm (16), the worm wheel (17) is fixedly arranged on a ball screw (18) rotatably connected with the electric leveling box body (21), the ball screw (18) is connected with a ball flange nut (19) in a transmission manner, a leveling fixing guide rail (25) slidably connected with the electric leveling box body (21) is fixedly arranged on the ball flange nut (19), and the leveling fixing guide rail (25) is matched with the ball ejecting seat (23).
8. The self-aligning leveling table according to claim 7, wherein: the electric leveling box body (21) is fixedly provided with a spring support column (26), and the spring support column (26) is detachably connected with the workbench table top (9) through a spring (27).
9. The self-aligning leveling table according to claim 8, wherein: the aligning and leveling auxiliary device (8) comprises an auxiliary steel ball support (28) fixedly arranged on the middle mounting plate (5), an auxiliary steel ball (30) is arranged on the auxiliary steel ball support (28), a pre-tightening spring (29) is arranged between the auxiliary steel ball support (28) and the pushed plate (15), and the auxiliary steel ball (30) and the two leveling jacking balls (24) are arranged in an equilateral triangle.
10. The cross arm radial measurement size calibration method of the aligning and leveling workbench according to claims 1 to 9, characterized by comprising the following steps:
s1, arranging the aligning and leveling workbench for measuring the overall dimension of the cylinder on a turntable with a cross arm, wherein the cross arm is provided with a measuring head and an X-axis beam grating ruler;
s2, opening the table top upper cover (11), extending the measuring head on the cross arm into the standard hole of the standard part (10), and attaching the measuring head to the side wall of the standard hole;
s3, rotating the aligning leveling workbench by a circle through the turntable, simultaneously sampling n points by the measuring head at equal angular intervals, wherein the system reading of the measuring head at the sampling point is delta i, and the reading of the corresponding X-axis beam grating ruler is Gs, and then the average distance value between the measuring head and the rotation center of the workbench
The average distance between the measuring head and the rotating center of the workbench is the calibration value of the radial measurement size of the cross arm.
And S4, inputting the calibration value into the measuring instrument to finish calibration, and compensating the error of the measuring instrument through the calibration value when the measuring instrument performs the global dimension measurement.
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