Linear guide rail arc raceway center distance measuring device

Abstract

The utility model discloses a linear guide rail arc raceway center distance measuring device, which belongs to the technical field of measuring devices and comprises a base, a positioning and clamping device, a measuring device, an upper frame and a lower frame, the base is formed by combining aluminum profiles and sheet metal parts, and a jack is mounted at the top of the base. A plurality of laser displacement sensors are adopted to collect point cloud data of the arc groove of the linear guide rail in three directions, measurement parameters of the arc groove are obtained through data fitting, and it is ensured that the manufacturing quality of the linear guide rail meets the design requirement, so that the stability and precision of equipment during operation are ensured, friction and abrasion in the operation process are reduced, and the service life of the equipment is prolonged. The service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring device technical field especially relates to a linear guide rail arc raceway center distance measuring device. BACKGROUND

[0002] Linear guide rail is an important rolling linear guide rail pair, and its main function is to support and guide the slider on the guide rail to reciprocate, is widely used in various industrial mechanical equipment and automation system, plays an important role in the field of industrial automation, and has become an indispensable key component in modern industrial production. As the most commonly used functional components in mechanical engineering field, the machining quality of linear guide rail has important influence on the motion precision of equipment, and the center distance parameter of arc groove is very critical. The center distance of arc groove is directly related to the cooperation between guide rail and slider, if the center distance is inaccurate, the slider may produce deviation or instability when moving on the guide rail, thereby affecting the precision of the whole system, the contact surface between guide rail and slider may be uneven, local wear is intensified, and abnormal noise may be generated, and in the installation process, the precision of arc groove center distance also affects the parallelism and straightness of guide rail. Therefore, the measurement of linear guide rail arc groove center distance is very important, which can ensure the installation precision, motion precision of guide rail, reduce wear and noise.

[0003] At present, linear guide rail arc groove size measurement mostly adopts ball head micrometer for batch measurement, or adopts manual image instrument for preliminary inspection and sampling detection, or adopts the method that the size of steel ball is replaced to make the pre-tightening force of the assembled slider and guide rail keep in a certain range, and the size of steel ball needs to be replaced frequently. The existing linear guide rail arc groove measurement method has the problems of low measurement precision and low efficiency, and cannot finely divide the size grade, thereby leading to batch assembly difficulty. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a linear guide rail arc raceway center distance measuring device.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a linear guide rail arc raceway center distance measuring device, including base, positioning clamping device, measuring device, upper rack and lower rack, the base adopts aluminum profile and sheet metal combination, and the top of the base is provided with a jack.

[0006] Further description of the above technical scheme:

[0007] The positioning clamping device adopts a symmetrical structure design, the first stepper motor is fixed on the first motor mounting plate, the first motor mounting plate is fixed on the lower rack, the first transmission shaft is driven to rotate through the first coupling, the pinion is installed on the first transmission shaft, the gear is installed on the second transmission shaft, the gear is engaged with the pinion for transmission, the large bevel gear is installed on the second transmission shaft and is engaged with the small bevel gear for transmission and rotates simultaneously with the gear, the small bevel gear and the center transmission gear are installed on the third transmission shaft and rotate synchronously, the first positioning gear is installed on the fourth transmission shaft, the second positioning gear is installed on the fifth transmission shaft, the first positioning gear and the second positioning gear are engaged with the center transmission gear for transmission, and the rotating directions of the first positioning gear and the second positioning gear are opposite.

[0008] As a further description of the above technical scheme:

[0009] The positioning clamping device further comprises that the first rack is engaged with the upper part of the first positioning gear, the first positioning block is fixed with the first rack, guide connecting pieces are installed on both sides of the first positioning block, the guide connecting pieces are fixedly connected with positioning sliding blocks, a positioning guide rail is installed on the upper rack, the second rack is engaged with the lower part of the second positioning gear, a connecting block is fixed on the second rack, the second positioning block is fixed with the connecting block, the movement directions of the first rack and the second rack are both towards the center, the first positioning block and the second positioning block move towards the center, and the positioning clamping devices of symmetrical structures are installed on both sides of the pinion.

[0010] As a further description of the above technical scheme:

[0011] The measuring device adopts a gantry structure, the third rack is installed on the rack through a rack fixing block, the servo motor is installed on a servo motor mounting plate, the servo motor is fixedly connected with the sixth transmission shaft through the second coupling, the transmission gear is connected with the bearing box, the transmission gear is engaged with the third rack, the gantry frame moves along the Y-axis direction, the servo motor mounting plate is fixed with the gantry frame column, a Y-axis sliding block is installed below the gantry frame column, and the transmission gears and the linear guides are arranged on both sides of the gantry frame.

[0012] As a further description of the above technical scheme:

[0013] The measuring device further comprises that the second stepper motor is fixed with the second motor mounting plate, the second motor mounting plate is fixed on the gantry frame cross beam, a supporting seat is installed on the gantry frame cross beam, a nut is installed on a lead screw, a first support is fixed with the nut, a second support is connected with the first support, an X-axis sliding block is installed on the second support, the X-axis sliding block is matched with an X-axis linear sliding rail, the X-axis linear sliding rail is installed on the gantry frame cross beam, a cam is installed at the end of the lead screw, a third support is fixed on a side sensor support, a Z-axis sliding block is installed on the third support, the Z-axis sliding block is matched with a Z-axis linear sliding rail, and the Z-axis linear sliding rail is installed on the gantry frame column.

[0014] As a further description of the above technical solutions:

[0015] The laser displacement sensor one and the laser displacement sensor two are respectively installed on the second support and the third support.

[0016] The utility model has the advantages of the following beneficial effects:

[0017] In the utility model, the device adopts a gantry structure, adopts multiple laser displacement sensors, respectively collects point cloud data of the linear guide rail arc groove in three directions, and obtains the measurement parameters of the arc groove through data fitting, so that the manufacturing quality of the linear guide rail meets the design requirements, thereby ensuring the stability and precision during equipment operation, reducing friction and wear during operation, and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A schematic view of a linear guide rail arc raceway center distance measuring device is provided for the utility model;

[0019] Figure 2 A positioning and clamping device structure schematic view of a linear guide rail arc raceway center distance measuring device is provided for the utility model;

[0020] Figure 3 A positioning and clamping device installation schematic view of a linear guide rail arc raceway center distance measuring device is provided for the utility model;

[0021] Figure 4 A measurement device structure schematic view of a linear guide rail arc raceway center distance measuring device is provided for the utility model Figure 1 ;

[0022] Figure 5 A measurement device structure schematic view of a linear guide rail arc raceway center distance measuring device is provided for the utility model Figure 2 .

[0023] LEGEND:

[0024] 1, base; 2, jack; 3, positioning and clamping device; 4, measuring device; 5, upper rack; 6, lower rack; 7, first stepper motor; 8, first motor mounting plate; 9, first coupling; 10, transmission shaft; 11, pinion; 12, gear; 13, second transmission shaft; 14, large bevel gear; 15, small bevel gear; 16, first positioning block; 17, second positioning block; 18, guide connecting piece; 19, positioning guide rail; 20, positioning slider; 21, second positioning gear; 22, first rack; 23, fifth transmission shaft; 24, center transmission gear; 25, third transmission shaft; 26, connecting block; 27, second rack; 28, fourth transmission shaft; 29 first positioning gear; 30, third rack; 31, rack fixing block; 32, transmission gear; 33, sixth transmission shaft; 34, bearing box; 35, second coupling; 36, servo motor mounting plate; 37, servo motor; 38, gantry column; 39, Y-axis slider; 40, linear guide rail; 41, cam; 42, support seat; 43, screw rod; 44, nut; 45, first support; 46, second support; 47, second motor mounting plate; 48, second stepper motor; 49, gantry beam; 50, side sensor support; 51, third support; 52, Z-axis slider; 53, Z-axis linear slide rail; 54, X-axis slider; 55, laser displacement sensor one; 56, laser displacement sensor two. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Referring to Figures 1-5 An embodiment provided by the utility model: a linear guide rail arc raceway center distance measuring device, including base 1, positioning and clamping device 3, measuring device 4, upper rack 5 and lower rack 6, the support for positioning and clamping device and measuring device, base 1 adopts aluminum profile and sheet metal combination, ensure the stability and carrying capacity of the whole device, the top of base 1 is equipped with jack 2, responsible for the leveling of measuring device.

[0027] The positioning and clamping device 3 adopts a symmetrical structure design. The first stepper motor 7 is fixed on the first motor mounting plate 8, and the first motor mounting plate 8 is fixed on the lower rack 6. The first positioning and clamping device is driven to rotate through the first coupling 9 and the first transmission shaft 10. The pinion 11 is installed on the first transmission shaft 10, and the gear wheel 12 is installed on the second transmission shaft 13. The gear wheel 12 is in meshing transmission with the pinion 11. The large bevel gear 14 is installed on the second transmission shaft 13 and is in meshing transmission with the small bevel gear 15, which rotates simultaneously with the gear wheel 12. The small bevel gear 15 and the center transmission gear 24 are installed on the third transmission shaft 25 and rotate synchronously. The first positioning gear 29 is installed on the fourth transmission shaft 28, and the second positioning gear 21 is installed on the fifth transmission shaft 23. The first positioning gear 29 and the second positioning gear 21 are in meshing transmission with the center transmission gear 24. The first positioning gear 29 and the second positioning gear 21 rotate in opposite directions. The positioning and clamping device 3 further includes the first rack 22 which is in meshing with the upper part of the first positioning gear 29. The first positioning block 16 is fixed with the first rack 22. The guide connecting piece 18 is installed on both sides of the first positioning block 16. The guide connecting piece 18 is fixedly connected with the positioning sliding block 20. The positioning guide rail 19 is installed on the upper rack 5. The second rack 27 is in meshing with the lower part of the second positioning gear 21. The second rack 27 is fixed with the connecting block 26. The second positioning block 17 is fixed with the connecting block 26. The movement directions of the first rack 22 and the second rack 27 are both towards the center. The first positioning block 16 and the second positioning block 17 move towards the center to realize the positioning and clamping of the measured linear guide rail. The positioning and clamping devices of symmetrical structure are installed on both sides of the pinion 11 to ensure that the measured linear guide rail is parallel to the measurement direction. The measurement device 4 adopts a gantry structure and includes the third rack 30 which is installed on the rack through the rack fixing block 31. The servo motor 37 is installed on the servo motor mounting plate 36. The second coupling 35 fixedly connects the servo motor 37 with the sixth transmission shaft 33. The transmission gear 32 is connected with the bearing box 34 and the third rack 30. The transmission gear 32 drives the gantry to move along the Y-axis direction. The servo motor mounting plate 36 is fixed with the gantry column 38. The Y-axis sliding block 39 is installed below the gantry column 38. The transmission gear 32 and the linear guide rail 40 are installed on both sides of the gantry. The measurement device 4 further includes the second stepper motor 48 which is fixed with the second motor mounting plate 47. The second motor mounting plate 47 is fixed on the gantry beam 49. The support seat 42 is installed on the gantry beam 49. The nut 44 is installed on the lead screw 43. The first support 45 is fixed with the nut 44. The second support 46 is connected with the first support 45. The X-axis sliding block 54 is installed on the second support 46. The X-axis sliding block 54 is matched with the X-axis linear slide rail. The X-axis linear slide rail is installed on the gantry beam 49. The cam 41 is installed at the end of the lead screw 43. The third support 51 is fixed on the side sensor support 50. The Z-axis sliding block 52 is installed on the third support 51. The Z-axis sliding block 52 is matched with the Z-axis linear slide rail 53. The Z-axis linear slide rail 53 is installed on the gantry column 38.The laser displacement sensor one 55 and the laser displacement sensor two 56 are respectively installed on the second support 46 and the third support 51, the second step motor 48 can adjust the position of the laser displacement sensor 55 in the X direction, and the cam 41 can realize the height of the two laser displacement sensors 56 in the Z axis, so that the to-be-measured linear guide rail is located in the measurement range.

[0028] Working principle: Before measurement, the measuring device is leveled to ensure that the workbench is horizontal, that is, to determine the accuracy of the relative position of the reference on the workbench in three-dimensional space; the to-be-measured linear guide rail is placed in the measurement area of the workbench, the step motor of the positioning and clamping mechanism is controlled to make the push rods on both sides of the to-be-measured guide rail clamp in the middle at the same time, so as to ensure the relative position of the to-be-measured guide rail and clamp it; the measurement parameters of the laser displacement sensor are set, the servo motor is controlled to run through the gear and rack mechanism to drive the gantry to move uniformly along the Y axis direction, three laser displacement sensors respectively collect point cloud data of three surfaces of the guide rail, and the collected data are spliced, the parameters of the circular arc groove are obtained through data fitting, and the distance of the circular arc groove is calculated.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A linear guide rail arc raceway center distance measuring device, comprising a base (1), a positioning and clamping device (3), a measuring device (4), an upper rack (5) and a lower rack (6), characterized in that: The base (1) is combined by aluminum profile and sheet metal, and a jack (2) is installed on the top of the base (1).

2. The linear guide rail arc-shaped raceway center distance measuring device according to claim 1, characterized in that: The positioning and clamping device (3) is designed in a symmetrical structure, a first stepper motor (7) is fixed on a first motor mounting plate (8), the first motor mounting plate (8) is fixed on a lower rack (6), a first transmission shaft (10) is driven to rotate through a first coupling (9), a pinion (11) is installed on the first transmission shaft (10), a gear (12) is installed on a second transmission shaft (13), the gear (12) is in meshing transmission with the pinion (11), a large bevel gear (14) is installed on the second transmission shaft (13) and is in meshing transmission with a small bevel gear (15) to rotate simultaneously with the gear (12), the small bevel gear (15) and a center transmission gear (24) are installed on a third transmission shaft (25) to rotate synchronously, a first positioning gear (29) is installed on a fourth transmission shaft (28), a second positioning gear (21) is installed on a fifth transmission shaft (23), the first positioning gear (29) and the second positioning gear (21) are in meshing transmission with the center transmission gear (24), and the first positioning gear (29) and the second positioning gear (21) rotate in opposite directions.

3. The linear guide rail arc-shaped raceway center distance measuring device according to claim 1, characterized in that: The positioning and clamping device (3) further comprises a first rack (22) in meshing transmission with the upper part of the first positioning gear (29), a first positioning block (16) is fixed with the first rack (22), guide connecting pieces (18) are installed on both sides of the first positioning block (16), the guide connecting pieces (18) are fixedly connected with positioning sliding blocks (20), a positioning guide rail (19) is installed on an upper rack (5), a second rack (27) is in meshing transmission with the lower part of the second positioning gear (21), the second rack (27) is fixed with a connecting block (26), a second positioning block (17) is fixed with the connecting block (26), the movement directions of the first rack (22) and the second rack (27) are both towards the center, the first positioning block (16) and the second positioning block (17) move towards the center, and positioning and clamping devices in a symmetrical structure are installed on both sides of the pinion (11).

4. The linear guide rail arc-shaped raceway center distance measuring device according to claim 1, characterized in that: The measuring device (4) adopts a gantry structure, a third rack (30) is installed on a rack through a rack fixing block (31), a servo motor (37) is installed on a servo motor mounting plate (36), a second coupling (35) fixedly connects the servo motor (37) and a sixth transmission shaft (33), the sixth transmission shaft (33) is connected with a transmission gear (32) through a bearing box (34), the transmission gear (32) is in meshing transmission with the third rack (30) to drive the gantry to move along the Y-axis direction, the servo motor mounting plate (36) is fixed with a gantry column (38), a Y-axis sliding block (39) is installed below the gantry column (38), and the gantry has transmission gears (32) and linear guide rails (40) on both sides.

5. The linear guide rail arc-shaped raceway center distance measuring device according to claim 1, characterized in that: The measuring device (4) further comprises a second stepper motor (48) fixed with a second motor mounting plate (47), the second motor mounting plate (47) is fixed on a gantry beam (49), a support seat (42) is installed on the gantry beam (49), a nut (44) is installed on a lead screw (43), a first support (45) is fixed with the nut (44), a second support (46) is connected with the first support (45), an X-axis sliding block (54) is installed on the second support (46), the X-axis sliding block (54) cooperates with an X-axis linear slide rail, the X-axis linear slide rail is installed on the gantry beam (49), a cam (41) is installed at the end of the lead screw (43), a third support (51) is fixed on a side sensor support (50), a Z-axis sliding block (52) is installed on the third support (51), the Z-axis sliding block (52) cooperates with a Z-axis linear slide rail (53), and the Z-axis linear slide rail (53) is installed on a gantry column (38).

6. The linear guide rail arc-shaped raceway center distance measuring device according to claim 1, characterized in that: The laser displacement sensor one (55) and the laser displacement sensor two (56) are respectively installed on the second support (46) and the third support (51).

Images