A moving device for placing a workpiece on a three-coordinate detection platform

Abstract

The application discloses a kind of mobile devices of three-coordinate detection platform placement workpiece, including workbench, which is provided with: lower seat;Upper seat is provided with sliding column, sliding column is located in the middle of cross slide to make the upper reference slot of upper seat and lower reference slot align;Horizontal limiting component, it includes limiting plate.The mobile device of three-coordinate detection platform placement workpiece provided by the application, upper seat can be moved in multiple directions relative to lower seat, the error between upper reference slot and lower reference slot is measured to obtain the error of horizontal sliding of upper seat and lower seat, and then the data superposition result of repositioning measurement is corrected, the detection accuracy is improved, secondly, the existence of limiting plate fixes the position of upper seat, avoids the accidental shaking or movement of upper seat, and causes the measurement data of fixed workpiece on it to appear error, further improves the accuracy of measurement data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of three-coordinate measuring machines, in particular to a three-coordinate measuring platform moving device for placing workpieces. BACKGROUND

[0002] Three-coordinate measuring machines are one of the most effective methods for measuring and obtaining dimensional data, because they can replace a variety of surface measuring tools and expensive combination gauges, and reduce the time required for complex measurement tasks from hours to minutes, which cannot be achieved by other instruments. Three-coordinate measuring machines are widely used in the mechanical, electronic, instrument, plastic and other industries.

[0003] According to the disclosure number CN110686629A, the disclosure (announcement) date: 2020.01.14, the disclosed includes a base, the upper end of the base is fixedly connected with a workbench, the inside of the workbench is provided with a through slot one, the left end of the through slot one is provided with a clamping groove, the inside of the through slot one is provided with a moving plate, the right end of the moving plate is fixedly connected with a fixed column, the front end surface center of the fixed column is fixedly connected with a fixed shaft, the front end of the fixed shaft is fixedly connected with a gear one, the inside of the through slot one is provided with a sliding groove three on the inner wall of the front and back two sides. The automatic balancing three-coordinate measuring machine based on mechanics, the motor drives the gear two to rotate, so that the gear one drives the fixed column to rotate in the inside of the semicircular cover, so that the moving plate starts to incline downward outside the left end of the workbench, so that the left end of the moving plate contacts the ground, realizes the automation of the measuring machine, reduces the labor of the workers, and improves the efficiency of measuring the workpiece.

[0004] In the prior art including the above-mentioned patent, a conveyor belt is provided on the workbench to drive the movement of the workpiece to be detected on the workbench, and the three-coordinate measuring machine often needs to use a repositioning detection method to measure large workpieces multiple times, that is, the conveyor belt is used to move the workpiece to be detected horizontally, and then the workpiece to be detected is repositioned and detected after being moved horizontally on the workbench. However, due to the parallelism error of the driving shaft axis of the conveyor belt and the gantry and the installation error between the conveyor belt and the driving shaft, the horizontal movement of the workpiece to be detected driven by the conveyor belt may be inaccurate, and the error on the conveyor belt is difficult to measure and solve, thereby making it difficult to superimpose and calculate the repositioning measurement data. SUMMARY

[0005] The purpose of the present application is to provide a three-coordinate measuring platform moving device for placing workpieces, which solves the above problems.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a three-coordinate measuring platform moving device for placing workpieces, comprising a workbench seat, which is provided with:

[0007] The lower seat is provided with a cross-shaped sliding groove, and a lower reference groove is arranged at a corner of the periphery of the lower seat;

[0008] The upper seat is provided with a fixing assembly, and a sliding column horizontally movable in the inner wall of the cross-shaped sliding groove is arranged on the upper seat. The sliding column is located in the middle of the cross-shaped sliding groove, so that the upper reference groove arranged on the upper seat is aligned with the lower reference groove.

[0009] The horizontal limiting assembly comprises a limiting plate, and the limiting plate is driven to rotate and arranged between the following stations:

[0010] The abutting station: the end of the limiting plate abuts against the limiting sliding column located in the middle of the cross-shaped sliding groove;

[0011] The clamping station: the limiting part of the limiting plate clamps the limiting sliding column located at the end of the cross-shaped sliding groove.

[0012] As a preferred, it further comprises a buffer assembly, which comprises a first buffer seat and a second buffer seat arranged in the lower seat, and a second elastic member. The first buffer seat and the second buffer seat are both provided with a buffer column part extending into the cross-shaped sliding groove. When the sliding column is driven to slide to the end of the cross-shaped sliding groove and abuts against the buffer column part, the sliding column pushes the first buffer seat or the second buffer seat away from the cross-shaped sliding groove to compress the second elastic member.

[0013] As a preferred, the first buffer seat and the second buffer seat are both provided with a movable part movably arranged in a movable groove arranged on the limiting part. The movable groove is formed into a locking groove through a blocking part. The first buffer seat or the second buffer seat is driven to slide to drive the limiting plate to rotate from the abutting station to the clamping station, and the movable part is driven to move and abut in the locking groove to lock the limiting plate in the clamping station.

[0014] As a preferred, it further comprises a vertical limiting assembly, which comprises a plurality of vertical lifting seats arranged in a circumferential array at the midpoint of the cross-shaped sliding groove. The vertical lifting seat is rotatably provided with a rotating ball extending into the cross-shaped sliding groove. When the sliding column is located in the middle of the cross-shaped sliding groove, the rotating ball abuts against a plurality of abutting arc grooves arranged in a circumferential array at the end of the sliding column.

[0015] As a preferred, the rotating ball is provided with a matching groove coaxially arranged with the rotating shaft thereof. The end surface of the sliding column is provided with a plurality of grooves to form a hollow rectangular protruding matching part. When the sliding column is driven to slide over the rotating ball, the matching groove of the rotating ball is vertically embedded with the matching part and then separated.

[0016] As a preferred, the abutting part of the limiting plate is provided with a flexible clamping block. When the limiting plate is rotated from the abutting station to the clamping station by the sliding column pushing the flexible clamping block to clamp in the matching groove, the limiting plate is driven by the first buffer seat or the second buffer seat to rotate and switch to the clamping station.

[0017] As preferred, the end of the buffer column part is in the shape of a truncated cone, the sliding column is provided with a buffer contact hole in the shape of a truncated cone in the circumferential array, and the sliding column abuts against the first buffer seat or the second buffer seat so that the end of the buffer column part coaxially abuts in the buffer contact hole.

[0018] As preferred, a wind pipe is further arranged on the vertical lifting seat, the rotating ball is provided with a blowing groove for receiving the wind pipe, the upper seat is provided with a temperature control cavity and a blowing hole facing the fixing assembly, the rotating ball abuts in the abutting arc groove so that the blowing groove is aligned with the inflow hole arranged in the abutting arc groove, and the inflow hole is connected with the temperature control cavity through the communication cavity arranged in the sliding column.

[0019] As preferred, the buffer contact hole of the sliding column is arranged with a communication hole inclined away from the inflow hole and connected with the communication cavity.

[0020] As preferred, a driving assembly is further arranged, which comprises a first threaded rod and a second threaded rod arranged on the sliding column in threaded connection, the first threaded rod and the second threaded rod are arranged in the lower seat in radial horizontal sliding through a plurality of sliding seats, and when one of the threaded rods is driven to rotate to drive the sliding column to move, the other threaded rod is locked in rotation.

[0021] In the above technical solution, the three-coordinate detection platform provided by the application has the following beneficial effects: the sliding column of the upper seat is arranged in the cross sliding groove of the lower seat to enable the upper seat to move in multiple directions relative to the lower seat, when performing the first measurement, the limiting plate is located in the abutting position to limit the sliding column in the middle of the cross sliding groove, and the upper reference groove of the upper seat is aligned with the lower reference groove of the lower seat, at this time, the data measurement of the fixed workpiece on part of the upper seat is completed first, then the sliding column is slid to the end of the cross sliding groove in any direction, the limiting plate is switched to the clamping position to enable the limiting part to clamp the sliding column, the upper seat and the lower seat are horizontally slid and offset to move the position of the fixed workpiece, and then the positions of the fixed workpiece originally outside the measurement distance can be measured, and then the error between the upper reference groove and the lower reference groove can be measured to obtain the error of the horizontal sliding of the upper seat and the lower seat, and then the data superposition result of the repositioning measurement is corrected to improve the detection accuracy. In addition, the limiting plate is arranged to limit and fix the upper seat at different positions, which avoids the accidental shaking or movement of the upper seat to cause the measurement data of the fixed workpiece on the upper seat to have errors, and further improves the accuracy of the measurement data. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0023] Figure 1 The overall structural schematic diagram provided for the embodiments of the present application is shown in the figure.

[0024] Figure 2 The overall explosion structural schematic diagram provided for the embodiments of the present application is shown in the figure.

[0025] Figure 3 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure.

[0026] Figure 4 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure. Figure 3 The partial enlarged schematic diagram at A in the figure is shown in the figure.

[0027] Figure 5 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure.

[0028] Figure 6 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure. Figure 5 The partial enlarged schematic diagram at B in the figure is shown in the figure.

[0029] Figure 7 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure.

[0030] Figure 8 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure. Figure 7 The partial enlarged schematic diagram at C in the figure is shown in the figure.

[0031] Figure 9 The overall vertical structural cross-sectional schematic diagram provided for the embodiments of the present application is shown in the figure.

[0032] Figure 10 The explosion structural schematic diagram of the horizontal limiting assembly and the buffer assembly provided for the embodiments of the present application is shown in the figure.

[0033] Figure 11 The explosion structural schematic diagram of the limiting plate, the first buffer seat and the second buffer seat provided for the embodiments of the present application is shown in the figure.

[0034] Figure 12 The explosion structural schematic diagram of the vertical limiting assembly provided for the embodiments of the present application is shown in the figure.

[0035] Figure 13 The sliding column structural schematic diagram of the upper seat provided for the embodiments of the present application is shown in the figure.

[0036] Figure 14 This is a schematic diagram showing the position of the sliding column at the end of the cross groove after the upper seat is shifted, according to an embodiment of the present invention.

[0037] Figure 15 Provided for embodiments of the present invention Figure 14 A magnified view of a portion of point D.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Workbench; 11. Lower seat; 111. Lower reference groove; 112. Cross slide groove; 2. Upper seat; 21. Upper reference groove; 22. Sliding column; 221. Threaded mating hole; 222. Connecting cavity; 223. Buffer contact hole; 224. Abutment arc groove; 225. Inflow hole; 226. Mating part; 227. Connecting hole; 23. Temperature control cavity; 231. Air outlet; 3. Drive assembly; 31. First threaded rod; 32. Second threaded rod; 33. Mating arc groove; 34. Sliding seat; 35. Drive motor; 4. Horizontal limit assembly; 41. Limiting plate; 411 412. Contact part; 413. Limiting part; 414. Extension groove; 415. Movable groove; 416. Expanding groove; 417. Blocking part; 418. Locking groove; 42. First elastic element; 43. Flexible locking block; 54. Buffer assembly; 51. First buffer seat; 52. Second buffer seat; 531. Buffer column part; 532. Extension part; 533. Movable part; 54. Second elastic element; 6. Vertical limiting assembly; 61. Vertical lifting seat; 62. Rotating ball; 621. Matching groove; 622. Blowout groove; 63. Third elastic element; 7. Air duct; 91. Fixing assembly. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0041] like Figures 1-15 As shown, a moving device for placing workpieces on a coordinate measuring machine platform includes a worktable 1, on which:

[0042] The lower seat 11 has a cross groove 112 on it, and a lower reference groove 111 is provided at the corner points around the lower seat 11.

[0043] The upper seat 2 is provided with the fixing assembly 91, and the sliding column 22 horizontally moves in the inner wall of the cross slide 112, and the sliding column 22 is located in the middle of the cross slide 112 so that the upper reference slot 21 on the upper seat 2 is aligned with the lower reference slot 111;

[0044] The horizontal limiting assembly 4 includes the limiting plate 41, and the limiting plate 41 is driven to rotate and is arranged between the following stations:

[0045] The end of the limiting plate 41 abuts against the limiting sliding column 22 located in the middle of the cross slide 112;

[0046] The limiting part 412 of the limiting plate 41 clamps the limiting sliding column 22 located at the end of the cross slide 112.

[0047] Specifically, as shown in the figure, Figure 1 When the measurement work is needed, the workbench 1 is lifted and installed on the three-coordinate detection machine, and when the workbench 1 needs to be maintained, the workbench 1 can be detached from the three-coordinate detection machine for maintenance, the upper seat 2 is slidably arranged on the lower seat 11 through the sliding column 22 and the cross slide 112, the upper seat 2 is provided with the fixing assembly 91 for fixing the workpiece to be detected on the upper seat 2, and the fixing assembly 91 is the technical knowledge known to those skilled in the art, which will not be described here.

[0048] The limiting plate 41 is rotatably arranged in the lower seat 11, and the first elastic member 42 is further arranged in the lower seat 11, which always drives the limiting plate 41 to rotate and be located as Figure 5The shown abutting workstations, the limiting plates 41 are distributed in a circular array with the midpoint of the cross-slots 112, and the limiting plates 41 and the cross-slots 112 are staggered, and the sliding column 22 of the upper seat 2 has a diameter equal to the slot width of the cross-slots 112 to improve the sliding stability of the sliding column 22, when the sliding column 22 is located in the middle of the cross-slots 112, the upper seat 2 is vertically aligned with the lower seat 11, and the upper reference groove 21 and the lower reference groove 111 are aligned with each other, at this time the limiting plate 41 is driven by the first elastic member 42 to be located in the abutting workstations, the end of the limiting plate 41 extends into the middle of the cross-slots 112 to abut the circumferential side of the sliding column 22, thereby realizing the stable limiting of the sliding column 22 in the middle of the cross-slots 112 by the limiting plate 41, thereby reducing the alignment error of the upper seat 2 and the lower seat 11, the existence of the limiting plate 41 can also stabilize the accidental sliding of the upper seat 2, avoid the accidental movement or shaking of the upper seat 2 to cause the error of the measurement data, at this time the upper reference groove 21 and the lower reference groove 11 can be measured to obtain the basic error between the upper seat 2 and the lower seat 11. Subsequently, the contact measurement data of the workpiece fixed on the upper seat 2 is obtained by the detection head of the three-coordinate detection machine, when it is necessary to detect the part outside the maximum detection range of the detection head, the sliding column 22 can be slid from the middle of the cross-slots 112 to the end of the cross-slots 112 to make the upper seat 2 slide horizontally relative to the lower seat 11, thereby driving the workpiece to move horizontally, then the contact measurement of the moved workpiece can be performed by the detection head of the three-coordinate detection machine, then the data obtained by two times of measurement is superimposed and integrated through the repositioning point to obtain the specific size data of the workpiece, at this time the data difference between the upper reference groove 21 of the upper seat 2 and the lower reference groove 111 of the lower seat 11 can be measured to obtain the specific movement error of the upper seat 2, thereby correcting the superimposed result of the repositioning measurement, and improving the detection accuracy.

[0049] When the sliding column 22 slides to the end of the cross-slots 112 to make the upper seat 2 slide into position, the limiting plate 41 is driven to rotate to the clamping workstations as shown in Figure 14 and Figure 15 At this time, the limiting part 412 of the limiting plate 41 clamps and stably limits the sliding column 22 at the end of the cross-slots 112, thereby avoiding the accidental sliding of the sliding column 22 in the cross-slots 112 to cause the movement of the upper seat 2, thereby further improving the carrying stability of the upper seat 2.

[0050] Further, the limiting portion 412 is an obtuse angle-shaped protrusion. When the sliding column 22 slides from the center of the cross slot 112 to the end, the limiting plate 41 is driven to rotate and switch from the abutting station to the clamping station, so that the limiting plate 41 rotates to make the limiting portion 412 in the form of an obtuse angle-shaped protrusion rotate close to the cross slot 112. When the sliding column 22 slides to the inside of the cross slot 112, the obtuse angle-shaped protrusion of the limiting portion 412 abuts the circumferential side of the sliding column 22 towards the side of the end of the cross slot 112, thereby making the limiting portion 412 and the inner wall of the cross slot 112 enclose and clamp the sliding column 22, further improving the clamping and limiting stability of the sliding column 22.

[0051] Wherein, the upper seat 2 can be driven by multiple electric push rods to make the sliding column 22 slide in the cross slot 112, or multiple hydraulic cylinders can be used to drive the sliding column 22 to slide, or other driving structures known to those skilled in the art that can drive the sliding column 22 to slide in the cross slot 112 can be used. The first elastic member 42 can be a coil spring, an elastic plate, an air bag, or other elastic members known to those skilled in the art.

[0052] In the above technical solution, the sliding column 22 of the upper seat 2 is arranged to slide in the cross slot 112 of the lower seat 11 to make the upper seat 2 move horizontally in multiple directions relative to the lower seat 11. When measuring for the first time, the limiting plate 41 is located at the abutting station to limit the sliding column 22 in the middle of the cross slot 112, and the upper reference groove 21 of the upper seat 2 is aligned with the lower reference groove 111 of the lower seat 11. At this time, the data measurement of the fixed workpiece on part of the upper seat 2 is completed first. Then, the sliding column 22 slides to the end of the cross slot 112 in any direction, and the limiting plate 41 switches to the clamping station to clamp the sliding column 22. The upper seat 2 and the lower seat 11 slide horizontally to move the position of the fixed workpiece, and then the positions of the fixed workpiece that are originally outside the measurement distance can be measured. Subsequently, the error between the upper reference groove 21 and the lower reference groove 111 can be measured to obtain the error of the horizontal sliding of the upper seat 2 and the lower seat 111, correct the superposition result of the repositioning measurement data, and improve the detection accuracy. Secondly, the existence of the limiting plate 41 limits and fixes the upper seat 2 at different positions, avoids accidental shaking or movement of the upper seat 2, and causes the measurement data of the fixed workpiece on the upper seat 2 to have errors, and further improves the accuracy of the measurement data.

[0053] As another embodiment of the present invention, it also includes a buffer assembly 5, which includes a first buffer seat 51, a second buffer seat 52 and a second elastic member 54 disposed in the lower seat 11. Both the first buffer seat 51 and the second buffer seat 52 are provided with buffer column portions 531 that extend parallel into the cross slide groove 112. After the sliding column 22 is driven to slide towards the end of the cross slide groove 112 so that the sliding column 22 abuts against the buffer column portion 531, the sliding column 22 pushes the first buffer seat 51 or the second buffer seat 52 to slide away from the cross slide groove 112 to compress the second elastic member 54.

[0054] Specifically, such as Figure 7 As shown, a plurality of first buffer seats 51 and second buffer seats 52 are slidably disposed in the lower seat 11. The buffer column portions 531 of the first buffer seats 51 and the second buffer seats 52 extend parallel from the end of the cross slide groove 112 to the middle of the cross slide groove 112. The first buffer seats 51 and the second buffer seats 52 are spaced apart at the central axis of the cross slide groove 112. A second elastic member 54 is provided on the side of the first buffer seat 51 or the second buffer seat 52 facing away from the cross slide groove 112.

[0055] When the upper seat 2 needs to move the workpiece, the sliding column 22 is driven to slide from the center of the cross groove 112 toward the end. Therefore, during the sliding process, the sliding column 22 abuts against the buffer column portion 531 of the first buffer seat 51 or the second buffer seat 52. As the sliding column 22 continues to slide toward the end of the cross groove 112, the sliding column 22, through the buffer column portion 531, pushes against the first buffer seat 51 or the second buffer seat 52 to slide away from the cross groove 112 and simultaneously compresses the second elastic element 54 to provide a buffering effect. This prevents a large impact when the sliding column 22 slides to the end of the cross groove 112, allowing the second elastic element 54 to absorb the impact when the upper seat 2 moves into place, reducing the vibration generated during the movement of the upper seat 2. This prevents the workpiece fixed on the upper seat 2 from shifting due to vibration, thus avoiding subsequent measurement data errors and further improving detection accuracy. Furthermore, the buffering effect of the first buffer seat 51, the second buffer seat 52, and the second elastic element 54 can also increase the service life of the upper seat 2, facilitating practical use and reducing maintenance.

[0056] The second elastic element 54 can be replaced by other elastic elements known to those skilled in the art, such as springs, elastic plates, or airbags.

[0057] As another embodiment provided by the present application, the first buffer seat 51 and the second buffer seat 52 are both provided with a movable part 533 movably arranged in a movable slot 414 formed in the limiting part 412, the movable slot 414 is formed into a locking slot 4143 by a blocking part 4142, the first buffer seat 51 or the second buffer seat 52 is driven to slide to drive the limiting plate 41 to rotate from the abutting station to the clamping station, and the movable part 533 is driven to move and abut in the locking slot 4143 to lock the limiting plate 41 in the clamping station.

[0058] Specifically, as shown in Figure 11 , the first buffer seat 51 and the second buffer seat 52 are both symmetrically provided with an extension part 532, and the end of the extension part 532 is provided with a movable part 533, and the two sides of the limiting plate 41 are both provided with an extension slot 413 and a movable slot 414, and the first buffer seat 51 and the second buffer seat 52 respectively pass through the extension slot 413 through the extension part 532 so that the movable part 533 is movably arranged in the movable slot 414 on both sides of the limiting plate 41.

[0059] As shown in Figure 7 and Figure 8 , when the limiting plate 41 is located at the abutting station, the movable part 533 is located at the end of the movable slot 414 at this time, and the movable part 533 is coaxial with the rotating shaft of the limiting plate 41, and the movable slot 414 is also provided with an expansion slot 4141, and the other end of the movable slot 414 is provided with a blocking part 4142 to form an arc-shaped locking slot 4143.

[0060] When the sliding column 22 is located at the cross slide 112, the limiting plate 41 is located at the abutting station, and when the sliding column 22 slides close to the end of the cross slide 112, the sliding column 22 first pushes away the two limiting plates 41 on one side of the movement direction, so that the sliding column 22 is close to the end of the cross slide 112. With the continuous sliding of the sliding column 22, the first buffer seat 51 or the second buffer seat 52 is pushed by the buffer column part 531 to slide, at this time the movable part 533 follows the first buffer seat 51 or the second buffer seat 52 to slide in the movable slot 414, at this time the first buffer seat 51 or the second buffer seat 52 pulls the limiting plate 41 to rotate by the movable part 533 to close to the limiting station, and the limiting part 412 of the limiting plate 41 extends into the cross slide 112, and the movable part 533 moves into the expansion slot 4141, at this time the sliding column 22 abuts on the obtuse angle protruding limiting part 412 of the limiting plate 41 on the side of the end of the cross slide 112 during the sliding process, and pushes the limiting plate 41 to rotate and stop, at this time the limiting part 412 of the limiting plate 41 also has a buffering effect on the sliding column 22, thereby realizing small resistance clamping during the sliding process of the sliding column 22, and further avoiding the problem of workpiece displacement caused by vibration of the upper seat 2.

[0061] Subsequently, the sliding column 22 continues to slide to approach the end of the cross sliding groove 112 by passing the highest point of the limiting portion 412, at this time, the movable portion 533 is driven to slide along with the first buffer seat 51 or the second buffer seat 52 to pass the blocking portion 4142 to pull and rotate the limiting plate 41 to make the limiting portion 412 completely extend into the cross sliding groove 112, at this time, the movable portion 533 slides along the blocking portion 4142 to abut in the locking groove 4143 to lock the limiting plate 41 in the clamping position, and the limiting portion 412 clamps and limits the sliding column 22 at the end of the cross sliding groove 112. The movable portion 533 is used to realize the rotation driving and locking of the limiting plate 41, which simplifies the structure of the device and further improves the limiting and locking stability of the limiting plate 41, ensures the stable locking of the upper seat 2, avoids the movement of the upper seat 2 caused by the accidental movement of the limiting plate 41, and further improves the stability of the workpiece bearing.

[0062] When the sliding column 22 needs to slide from the cross sliding groove 112 to the middle of the cross sliding groove 112 for resetting, the sliding column 22 pushes the limiting portion 412 to drive the limiting plate 41 to rotate away, and when the rotation force of the sliding column 22 pushing the limiting plate 41 is greater than the friction force between the movable portion 533 and the locking groove 4143, the limiting plate 41 is rotated to the abutting position by the first elastic member 42, thereby facilitating the resetting and locking of the sliding column 22.

[0063] In the abutting position of the limiting plate 41, the movable portion 533 of the first buffer seat 51 and the second buffer seat 52 are coaxial with the rotating shaft of the limiting plate 41, so that even if the limiting plate 41 is driven to rotate by any one buffer seat, the problem of rotation jamming caused by the interference of the other buffer seat will not occur.

[0064] As another embodiment of the present application, a vertical limiting assembly 6 is further included, which comprises a plurality of vertical lifting seats 61 arranged in a circumferential array at the midpoint of the cross sliding groove 112, and a rotating ball 62 is arranged on the vertical lifting seat 61 and extends into the cross sliding groove 112, and the sliding column 22 is located at the middle of the cross sliding groove 112 so that the rotating ball 62 abuts in a plurality of abutting arc grooves 224 arranged in a circumferential array at the end of the sliding column 22.

[0065] Specifically, as shown in Figure 9 The vertical limiting assembly 6 is arranged in a circumferential array at the midpoint of the cross sliding groove 112, and as shown in Figure 3 and Figure 4As shown, the vertical limiting assembly 6 further comprises a third elastic member 63, the vertical lifting seat 61 is driven by the third elastic member 63 to vertically slide to make the rotating ball 62 vertically rise into the cross sliding groove 112, the bottom of the sliding column 22 is provided with a plurality of circumferentially arranged abutting arc grooves 224, when the upper seat 2 is aligned with the lower seat 11, the sliding column 22 is located in the middle of the cross sliding groove 112, the third elastic member 63 drives the vertical lifting seat 61 to vertically slide upward, thereby making the rotating ball 62 rise and abut on the abutting arc groove 224 of the sliding column 22, the vertical abutment of the plurality of rotating balls 62 can further vertically and horizontally limit and lock the sliding column 22, which can avoid the axial shaking of the sliding column 22, and further center the sliding column 22 in the cross sliding groove 112, thereby further reducing the error when the upper seat 2 is aligned with the lower seat 11, facilitating subsequent data superposition calculation.

[0066] Wherein, the third elastic member 63 can be a spring, an elastic plate or an air bag or other elastic members known to those skilled in the art.

[0067] As another embodiment provided by the application, the rotating ball 62 is provided with a matching groove 621 coaxially arranged with the rotating shaft thereof, the end face of the sliding column 22 is provided with a plurality of grooves to form a hollow rectangular protruding matching part 226, the sliding column 22 is driven to slide over the rotating ball 62 to make the matching groove 621 of the rotating ball 62 vertically embedded with the matching part 226 and then separated.

[0068] Specifically, as shown in the figure, Figure 12 The matching groove 621 of the rotating ball 62 is coaxial with the rotating shaft thereof, and as shown in the figure, Figure 13 When the sliding column 22 needs to slide from the middle of the cross sliding groove 112 to the end, the end of the sliding column 22 will pass over the rotating ball 62, the rotating ball 62 and the vertical lifting seat 61 are slid downward to facilitate the movement of the sliding column 22 against the third elastic member 63, and due to the existence of the matching part 226 and the matching groove 621, when one side of the rectangle of the matching part 226 is aligned with the matching groove 621 during the process of the sliding column 22 passing over the rotating ball 62, the third elastic member 63 drives the vertical lifting seat 61 to make the rotating ball 62 rise, thereby making the matching groove 621 rise and vertically embedded with the matching part 226, and then with the continuous sliding of the sliding column 22, the rotating ball 62 is pressed downward to make the matching groove 621 separated from the matching part 226, since the sliding column 22 will produce horizontal acceleration shaking during the horizontal movement, the instant vertical embedding and separation of the matching groove 621 of the rotating ball 62 and the matching part 226 can reduce the horizontal acceleration shaking of the sliding column 22 during the movement, improve the sliding stability of the sliding column 22, and avoid the workpiece from being displaced relative to the upper seat 2 due to the shaking caused by acceleration.

[0069] Further, since the rotating ball 62 is arranged to rotate on the vertical lifting seat 61, as shown in the figure, the rotating axis of the rotating ball 62 is parallel to the slot wall of the cross slot 112, and thus if the sliding column 22 slides to the end of the cross slot 112 as shown in the figure, the sliding column 22 will pass the right rotating ball 62, but the passed rotating ball 62 will not rotate, avoiding the problem that the rotating ball 62 is squeezed to rotate and the sliding column 22 is axially shaken, further improving the sliding stability of the sliding column 22. Figure 14 Figure 14 Further, since the rotating ball 62 is arranged to rotate on the vertical lifting seat 61, as shown in the figure, the rotating axis of the rotating ball 62 is parallel to the slot wall of the cross slot 112, and thus if the sliding column 22 slides to the end of the cross slot 112 as shown in the figure, the sliding column 22 will pass the right rotating ball 62, but the passed rotating ball 62 will not rotate, avoiding the problem that the rotating ball 62 is squeezed to rotate and the sliding column 22 is axially shaken, further improving the sliding stability of the sliding column 22.

[0070] As another embodiment provided by the present application, the abutting portion 411 of the limiting plate 41 is provided with a flexible clamping block 43, and when the limiting plate 41 is abutted by the sliding column 22 and rotated to the clamping position where the flexible clamping block 43 is clamped in the matching groove 621, the limiting plate 41 is driven by the first buffer seat 51 or the second buffer seat 52 to rotate and switch to the clamping position.

[0071] Specifically, as shown in the figure, the end of the limiting plate 41 towards the middle of the cross slot 112 in the abutting position is the abutting portion 411, and the abutting portion 411 is provided with a flexible clamping block 43. Figure 7 When the sliding column 22 slides close to the end of the cross slot 112, the sliding column 22 first abuts the two limiting plates 41 on the side of the movement direction to move away, thereby facilitating the sliding column 22 to slide close to the end of the cross slot 112, and the limiting plate 41 is rotated close to the rotating ball 62 by the abutment of the sliding column 22, and the flexible clamping block 43 is clamped in the matching groove 621, at this time the sliding column 22 has passed the abutting portion 411 of the limiting plate 41 to slide close to the cross slot 112, and until the sliding column 22 slides to abut the first buffer seat 51 or the second buffer seat 52, the first buffer seat 51 or the second buffer seat 52 is activated to drive the limiting plate 41 to rotate and close to the clamping position. In this process, the flexible clamping block 43 and the matching groove 621 of the rotating ball 62 are used to clamp the limiting plate 41, thereby avoiding the problem that after the sliding column 22 passes the abutting portion 411 of the limiting plate 41, the first elastic member 42 drives the limiting plate 41 to reset and causes the abutting portion 411 to abut the sliding column 22 to accelerate the sliding. Further improve the sliding stability and smoothness of the sliding column 22 in the cross slot 112.

[0072] When the flexible clamping block 43 is disengaged from the matching groove 621, the rotating ball 62 can rotate slightly to reduce the impact force generated when the limiting plate 41 is disengaged from the rotating ball 62, thereby increasing the service life of the limiting plate 41.

[0073]

[0074] ​​As another embodiment provided by the present application, the end of the buffer column part 531 is in the shape of a circular truncated cone, and the buffer contact holes 223 in the shape of a circular truncated cone are arranged in a circular array on the sliding column 22, and the sliding column 22 abuts against the first buffer seat 51 or the second buffer seat 52 so that the end of the buffer column part 531 coaxially abuts in the buffer contact hole 223.

[0075] Specifically, as shown in Figure 6 the end of the buffer column part 531 is in the shape of a circular truncated cone, and the buffer contact holes 223 in the shape of a circular truncated cone are arranged in a circular array on the sliding column 22, and when the sliding column 22 is driven to slide close to the end of the cross slide 112, the buffer column part 531 coaxially abuts in the buffer contact hole 223, and then the radial perpendicularity of the buffer column part 531 and the sliding column 22 is achieved through the buffer column part 531 and the buffer contact hole 223, so as to reduce the horizontal rotation error of the upper seat 2 in the horizontal sliding process, and further improve the accuracy of the measurement data.

[0076] As still another embodiment provided by the present application, the air pipe 7 is arranged on the vertical lifting seat 61, the blowout groove 622 for receiving the air blown out by the air pipe 7 is arranged on the rotating ball 62, the temperature control cavity 23 and the air outlet hole 231 facing the fixing assembly 91 are arranged on the upper seat 2, the rotating ball 62 abuts in the abutting arc groove 224 so that the blowout groove 622 is aligned with the inflow hole 225 arranged in the abutting arc groove 224, and the inflow hole 225 is connected with the temperature control cavity 23 through the communication cavity 222 arranged in the sliding column 22.

[0077] Specifically, as shown in Figure 4 the air pipe 7 is aligned with the blowout groove 622 of the rotating ball 62, when the upper seat 2 is aligned with the lower seat 11, the rotating ball 62 abuts in the abutting arc groove 224 of the sliding column 22, and the blowout groove 622 is aligned with the inflow hole 225, so that the hot air or cold air blown out by the air pipe 7 can flow into the temperature control cavity 23 of the upper seat 2 through the blowout groove 622, the inflow hole 225 and the communication cavity 222, and the temperature of the upper seat 2 is adjusted to be consistent with the temperature of the detection head of the three-coordinate detection machine through the air pipe 7 and the temperature control cavity 23, so as to avoid the damage to the detection head caused by the temperature difference, and further, the air outlet holes 231 facing the fixing assembly 91 are arranged on the temperature control cavity 23, so that the temperature of the workpiece can be adjusted through the air outlet holes 231, thereby further reducing the damage to the detection head caused by the temperature difference.

[0078] The air pipe 7 is connected with the external air temperature adjusting machine to blow out hot air or cold air, and the air pipe 7, the air temperature adjusting machine and the connection therebetween, and the three-coordinate detection machine and the detection head thereon are all conventional technologies known by those skilled in the art, and will not be described here.

[0079] As another embodiment of the present invention, the sliding column 22 has an inclined backflow hole 225 and a connecting hole 227 connected to the connecting cavity 222 in the buffer contact hole 223.

[0080] Specifically, such as Figure 4 As shown, the buffer contact hole 223 is connected to the connecting cavity 222 through the connecting hole 227, and the connecting hole 227 is tilted away from the inflow hole 225, that is, the connecting hole 227 is tilted upward to connect with the connecting cavity 222. When the air in the duct 7 is blown into the connecting cavity 222 along the inflow hole 225, the air in the connecting cavity 222 is a vertically rising airflow. Therefore, due to the difference in flow velocity, the inflow hole 225 and the connecting hole 227 will have a suction force towards the connecting cavity 222, thereby removing the dust and debris stuck in the buffer contact hole 223. This avoids the horizontal rotation error of the upper seat 2 caused by debris between the buffer contact hole 223 and the buffer column 531 when they are in coaxial contact.

[0081] As another embodiment of the present invention, it also includes a drive assembly 3, which includes a first threaded rod 31 and a second threaded rod 32 threadedly mounted on the sliding column 22. The first threaded rod 31 and the second threaded rod 32 are both radially and horizontally slidably disposed in the lower seat 11 through a plurality of sliding seats 34. When any one of the above threaded rods is driven to rotate to drive the sliding column 22 to move, the other threaded rod is locked to rotate.

[0082] Specifically, such as Figure 2 As shown, the first threaded rod 31 and the second threaded rod 32 are arranged vertically, and both the first threaded rod 31 and the second threaded rod 32 are radially and horizontally slidably disposed within the lower seat 11 via a sliding seat 34. A drive motor 35 is mounted on the sliding seat 34 to drive the first threaded rod 31 or the second threaded rod 32 to rotate. Both the first threaded rod 31 and the second threaded rod 32 have mating grooves 33 in their middle portions. When both the first threaded rod 31 and the second threaded rod 32 are threadedly fitted into the threaded mating holes 221 on the sliding column 22, and the upper seat 2 and the lower seat 11 are aligned, the sliding column 22 is located in the middle of the cross groove 112. The mating grooves 33 of the first threaded rod 31 and the second threaded rod 32 are aligned with each other. At this time, due to the presence of the arc-shaped grooves of the first threaded rod 31 and the second threaded rod 32, when the first threaded rod 31 is driven to rotate to move the sliding column 22, the second threaded rod 32 is locked and slides synchronously with the sliding column 22. Similarly, when the second threaded rod 32 is driven to rotate to move the sliding column 22, the first threaded rod 31 is locked and slides synchronously with the sliding column 22. Through the first threaded rod 31 and the second threaded rod 32, the sliding column 22 can only slide within the cross groove 112, thus improving the sliding stability of the upper seat 2.

[0083] The driving motor 35 and the connecting line matched therewith are well known to those skilled in the art, and thus are not described here.

[0084] The foregoing merely illustrates some exemplary embodiments of the present application, no doubt numerous modifications and alterations can be made by those skilled in the art without departing from the spirit and scope of the present application. Therefore, the above description is not intended to limit the present application, but to enable any person skilled in the art to employ the application.

Claims

1. A moving device for placing a workpiece on a coordinate measuring machine platform, characterized in that, Includes a workbench, on which are provided: The lower seat has a cross-shaped sliding groove, and a lower reference groove is provided at the corner of the lower seat. The upper seat is provided with a fixing component. The upper seat is provided with a sliding column that is driven to move horizontally against the inner wall of the cross slide groove. The sliding column is located in the middle of the cross slide groove so that the upper reference groove and the lower reference groove opened on the upper seat are aligned. A horizontal limiting assembly, including a limiting plate, the limiting plate being rotatably mounted and switching between the following positions: Contact station: The ends of several limiting plates contact the limiting sliding column located in the middle of the cross groove; Clamping station: The limiting part of the limiting plate clamps and limits the sliding column at the end of the cross groove; It also includes a buffer assembly, which includes a first buffer seat, a second buffer seat and a second elastic member disposed in the lower seat. The first buffer seat and the second buffer seat are each provided with a buffer column portion extending parallel into the cross slide groove. The sliding column is driven to slide towards the end of the cross slide groove so that the sliding column abuts the buffer column portion. After the sliding column pushes the first buffer seat or the second buffer seat to slide away from the cross slide groove to compress the second elastic member. Both the first buffer seat and the second buffer seat are provided with a movable part. The movable part is movably disposed in the movable groove opened on the limiting part. The movable groove is formed by a blocking part. The first buffer seat or the second buffer seat is driven to slide to drive the limiting plate to rotate from the contact position to the clamping position. The movable part is driven to move and abuts against the locking groove to lock the limiting plate in the clamping position. It also includes a vertical limiting component, which includes several vertical lifting seats arranged in a circumferential array at the midpoint of the cross slide groove. A rotating ball is rotatably arranged on the vertical lifting seat and extends into the cross slide groove. The sliding column is located in the middle of the cross slide groove so that the rotating ball abuts against several abutting arc grooves opened in a circumferential array at the end of the sliding column. The rotating ball has a mating groove coaxial with its rotating axis, and the end face of the sliding column has several grooves to form a hollow rectangular protrusion mating part. The sliding column is driven to slide past the rotating ball so that the mating groove of the rotating ball and the mating part are vertically engaged and then disengaged. The limiting plate is provided with a flexible locking block on the contact part. The limiting plate is pushed by the sliding column and rotates from the contact position to the flexible locking block contacting and locking in the mating groove. The limiting plate is driven by the first buffer seat or the second buffer seat to rotate and switch to the clamping position. The end of the buffer column is shaped like a frustum, and the sliding column has frustum-shaped buffer contact holes arranged in a circular array. The sliding column abuts against the first buffer seat or the second buffer seat so that the end of the buffer column abuts against the buffer contact holes coaxially. When the sliding column slides to the end of the cross groove to make the upper seat slide into place, the limiting plate is driven to rotate and switch to the clamping position. At this time, the limiting part of the limiting plate clamps and stabilizes the sliding column at the end of the cross groove. The limiting part is obtuse-angled protrusion. As the sliding column slides from the center of the cross groove to the end, the limiting plate is driven to rotate and switch from the contact position to the clamping position. Therefore, the limiting plate rotates so that the obtuse-angled protrusion of the limiting part rotates closer to the cross groove. When the sliding column slides into the interior of the cross groove, the obtuse-angled protrusion of the limiting part abuts against the periphery of the sliding column on the side facing the end of the cross groove, thereby causing the limiting part and the inner wall of the cross groove to surround and clamp the limiting sliding column.

2. The moving device for placing a workpiece on a coordinate measuring platform according to claim 1, characterized in that, It also includes an air duct set on a vertical lifting seat. The rotating ball has a blowout groove for collecting the air from the air duct. The upper seat has a temperature control cavity and an air outlet facing the fixed component. The rotating ball abuts against the abutting arc groove so that the blowout groove is aligned with the inflow hole opened in the abutting arc groove. The inflow hole is connected to the temperature control cavity through a connecting cavity opened in the sliding column.

3. The moving device for placing a workpiece on a coordinate measuring platform according to claim 2, characterized in that, The sliding column has a buffer contact hole with an inclined backflow hole and a connecting hole that communicates with the connecting cavity.

4. The moving device for placing a workpiece on a coordinate measuring platform according to claim 1, characterized in that, It also includes a drive assembly, which includes a first threaded rod and a second threaded rod threadedly mounted on a sliding column. The first threaded rod and the second threaded rod are both radially and horizontally slidably disposed in a lower seat through a plurality of sliding seats. When any one of the above threaded rods is driven to rotate to drive the sliding column to move, the other threaded rod is locked to rotate.

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