Articulated arm dimensional measuring machine

Abstract

The application relates to the technical field of joint arm measurement, and particularly discloses a joint arm size measuring machine, which comprises a supporting base, supporting components are fixedly installed at the four corners of the bottom of the supporting base, a displacement assembly is fixedly installed at the outer end of a transmission assembly, and a lifting mechanism is arranged at the top of the displacement assembly; compared with the prior art, the technical scheme can rotate the connecting plate by rotating the driven gear, the connecting plate can drive the displacement guide rail to rotate, the displacement guide rail can drive the joint measurement swing arm and the measuring head to move by rotating outside the product positioning seat, the third motor can adaptively drive the joint measurement swing arm and the measuring head to rotate and adjust, so that the joint measurement swing arm and the measuring head can be adjusted at any angle position on the top side of the product positioning seat, the overall measurement range and precision are higher, and the joint arm size measuring machine is more convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of joint arm measurement, in particular to a joint arm size measuring machine. BACKGROUND

[0002] The joint arm is a portable three-coordinate measuring instrument, which can be used in the workshop or the measurement laboratory. The joint arm type coordinate measuring machine is a non-orthogonal system coordinate measurement, which imitates the joint structure of the human body, replaces the length reference with the angle reference, connects a number of rod members and a measuring head through a rotating joint in series, one end is fixed, and the other end can move freely in space, forming a spherical measuring space. However, the existing joint arm mainly adjusts the height and angle through the joint of the joint arm during measurement, and the movement range of the joint is limited.

[0003] The patent number "CN202021431852.3" is a joint arm measuring device with high adjustment, which includes a supporting base, a positioning hole is formed on one side of the top end of the supporting base, a movable column is movably installed on the inner wall of the positioning hole, a gear is fixedly connected to the top end of the movable column, a fixed disc is fixedly connected to the top end of the gear, a U-shaped frame is slidingly connected to the top end of the supporting base, a rack is uniformly installed on one side of the inner wall of the U-shaped frame, and a fixed plate is fixedly installed on the top end of the fixed disc. When the U-shaped frame is driven by the hydraulic rod to move horizontally on the supporting base, the gear is driven to rotate at a corresponding angle, so that the fixed plate and the joint arm measuring device are driven to rotate at a corresponding angle, thereby enhancing the measurement range of the joint arm measuring device. At the same time, the motor drives the screw rod to rotate forward and backward, so that the movable block can slide up and down in the sliding groove, thereby adjusting the use height of the joint arm measuring device according to the demand, so as to position the coordinates more accurately.

[0004] The above technical scheme drives the swing arm measuring device to rotate by the driving of the hydraulic rod, and drives the swing arm measuring device to displace up and down by the driving of the motor. Although the above two technical means can achieve good adjustment function and can position to a certain extent, it still has certain defects in use. Although it can adjust the rotation and height adjustment of the joint arm measuring device, it cannot adjust the movement of the joint arm measuring device in three dimensions. During use, the joint arm measuring device cannot move left and right and forward and backward, which leads to the problem of limited movement range of the joint and small working range. Moreover, it cannot accurately position the measured product during measurement, and each use of measurement is cumbersome and inconvenient, so it needs to be improved.

[0005] Therefore, we propose a joint arm size measuring machine to solve the above problems. SUMMARY

[0006] The present application aims to provide a joint arm size measuring machine to solve the problems of limited measuring range and poor positioning of the measured product during measurement of the prior art in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides a joint arm size measuring machine, comprising a support base, the bottom four corners of the support base are fixedly installed with support components, the top of the support base is provided with a transmission assembly, the outer end of the transmission assembly is fixedly installed with a displacement assembly, the top of the displacement assembly is provided with a lifting mechanism, the upper end of the right side of the lifting mechanism is fixedly installed with a joint measurement swing arm, the outer end of the joint measurement swing arm is fixedly installed with a measuring head, and the top of the transmission assembly is fixedly installed with a clamping mechanism.

[0008] The transmission assembly comprises a mounting positioning shaft and a first motor, the first motor is fixedly installed at the bottom of the support base, the mounting positioning shaft is fixedly installed at the middle of the top of the support base, the top output end of the first motor is fixedly installed with a driving gear through the support base, the outer side of the mounting positioning shaft is rotatably connected with a transmission gear, the transmission gear and the driving gear are rotatably connected with each other, the top of the transmission gear is fixedly installed with a connecting plate, the connecting plate is rotatably connected to the outer surface of the rotating shaft, and the left side of the connecting plate is fixedly connected with the displacement assembly.

[0009] The displacement assembly comprises a displacement guide rail, the displacement guide rail is fixedly installed on the left side of the connecting plate, the inner side of the displacement guide rail is slidably connected with a sliding plate, the left end of the sliding plate is fixedly connected with the lifting mechanism, the inner right side of the displacement guide rail is fixedly installed with a second motor, the output end of the second motor is fixedly installed with a first screw rod, and the first screw rod and the sliding plate are threadedly connected with each other.

[0010] In further embodiments, the lifting mechanism comprises a third motor, the third motor is fixedly installed at the bottom of the sliding plate, the top output end of the third motor is fixedly installed with a fixing assembly through the sliding plate, the top of the third motor is installed with a sliding frame through the fixing assembly, the top of the sliding frame is fixedly installed with a telescopic air cylinder, the bottom output end of the telescopic air cylinder is fixedly installed with a sliding block through the top of the sliding frame, and the right side of the sliding block is connected with the joint measurement swing arm.

[0011] In further embodiments, the sliding block has a convex shape in plan view, the inner side of the sliding frame also has a convex shape, and the cross-sectional shape of the sliding plate and the inner side of the displacement guide rail are both set to a convex shape.

[0012] In further embodiments, the clamping mechanism comprises a product positioning seat fixedly installed on the top of the installation positioning shaft, a track sliding frame fixedly installed on the top of the product positioning seat, a second lead screw rotatably connected to the inner side of the track sliding frame, a fourth motor fixedly installed on the right side of the track sliding frame, the output end of the fourth motor fixedly connected with the right end of the second lead screw, a moving block threadedly connected to both ends of the second lead screw, and a positioning clamping block fixedly installed on the top of the moving block.

[0013] In further embodiments, the inner side of the positioning clamping block is provided with a positioning clamping groove, the top view shape of the positioning clamping groove is an isosceles trapezoid, and the cross-sectional shape of the positioning clamping block is L-shaped.

[0014] In further embodiments, the fixing assembly comprises a mounting seat and a fixing seat, the mounting seat is fixedly installed on the top output end of the third motor, the fixing seat is fixedly installed on the bottom of the sliding frame body, a fixed frame is fixedly installed on the left side of the mounting seat, a limiting spring is fixedly installed on both ends of the inner side of the fixed frame, a clamping block is fixedly installed on the right end of the limiting spring, the fixing seat is inserted into the inner side of the mounting seat, a limiting clamping groove is formed on the left side of the fixing seat, and the clamping block penetrates through the mounting seat and is inserted into the inner side of the limiting clamping groove.

[0015] In further embodiments, a linkage shaft body is fixedly installed on the left side of the clamping block, a connecting pull rod is fixedly installed on the left side of the linkage shaft body and penetrates through the fixed frame, and the combination of the connecting pull rod and the linkage shaft body has a T-shaped front face shape.

[0016] In further embodiments, the supporting component comprises a supporting leg fixedly installed at the bottom four corners of the supporting base, a base fixedly installed on the bottom of each supporting leg, a bottom supporting frame rotatably connected to the bottom of each base, and a universal wheel rotatably connected to the bottom of each bottom supporting frame.

[0017] In further embodiments, a positioning plate is fixedly installed on the outer side of the base, a fixed screw is threadedly connected to the outer end of the positioning plate, an adjusting knob is fixedly installed on the top of the fixed screw, anti-skid lines are equidistantly arranged on the outer surface of the adjusting knob, and an anti-skid plate is fixedly installed on the bottom of the fixed screw.

[0018] In further embodiments, the side face shape of the clamping block is a right trapezoid, the inclined surface of the clamping block is arranged on the right side of the top, the top view shape of the inner side of the mounting seat is a regular hexagon, and the bottom view shape of the fixing seat is also a regular hexagon.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] First, in the application, the second motor drives the first screw to rotate, the first screw drives the sliding plate to slide in the inner side of the displacement guide rail, the sliding of the sliding plate can assist the joint measurement swing arm to move horizontally, adjusting the horizontal displacement of the joint measurement swing arm can assist the further compensation adjustment of the position of the measuring head, thereby improving the measurement range and the measurement accuracy, so compared with the prior art, the measurement progress of the technical solution is higher.

[0021] Second, in the application, the driven gear rotates to assist the rotation of the connecting plate, the rotation of the connecting plate drives the displacement guide rail to rotate, the displacement guide rail rotates outside the product positioning seat, which can assist the joint measurement swing arm and the measuring head to move, the operation of the third motor can adaptively drive the joint measurement swing arm and the measuring head to rotate and adjust, so that the joint measurement swing arm and the measuring head can be adjusted at any angle position on the top side of the product positioning seat, the overall measurement range and accuracy are higher, and the device is more convenient to use.

[0022] Third, in the application, the joint measurement swing arm and the measuring head are installed by the spring clamping design of the limiting spring and the clamping block, so that the joint measurement swing arm and the measuring head are convenient to disassemble and maintain, and the device is convenient to move, so the movable design of the technical solution is convenient to disassemble and maintain, and the device is convenient to transport and has high practicability.

[0023] Fourth, in the application, the fourth motor drives the second screw to rotate, the rotation of the second screw can drive the two groups of moving blocks to slide in the inner side of the track sliding frame, and the moving blocks can assist the positioning clamping blocks to move, so that the product can be clamped by clamping, and the product is in a unified position in the center after each clamping, thereby facilitating repeated measurement, so the positioning and measurement of the device are convenient, the measurement accuracy and efficiency are improved, and the device is worth popularizing and applying. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic diagram in the application;

[0025] Figure 2 It is a left view in the application;

[0026] Figure 3 It is a bottom view in the application;

[0027] Figure 4 It is a top view of the support base in the application;

[0028] Figure 5The overall plan view in the present application;

[0029] Figure 6 The structure diagram of the clamping mechanism in the present application;

[0030] Figure 7 The structure diagram of the lifting mechanism in the present application;

[0031] Figure 8 The enlarged view of A in the present application Figure 7

[0032] In the figure: 1, support base; 2, support part; 21, support leg; 22, base; 23, bottom support frame; 24, universal wheel; 25, positioning plate; 26, fixing screw; 27, adjusting knob; 28, anti-skid plate; 3, transmission assembly; 31, mounting positioning shaft; 32, first motor; 33, driving gear; 34, transmission gear; 35, connecting plate; 4, joint measurement swing arm; 5, displacement assembly; 51, displacement guide rail; 52, sliding plate; 53, second motor; 54, first lead screw; 6, lifting mechanism; 61, third motor; 62, fixing assembly; 621, fixing seat; 622, mounting seat; 623, fixing frame; 624, limit spring; 625, clamping block; 626, limit clamping groove; 627, linkage shaft body; 628, connecting pull rod; 63, sliding frame body; 64, telescopic cylinder; 65, sliding block; 7, measurement head; 8, clamping mechanism; 81, product positioning seat; 82, track sliding frame; 83, second lead screw; 84, fourth motor; 85, moving block; 86, positioning clamping block; 87, positioning clamping groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-8 In the embodiments of the present application, a joint arm size measuring machine comprises a support base 1, support parts 2 are fixedly installed at the bottom four corners of the support base 1, a transmission assembly 3 is arranged at the top of the support base 1, a displacement assembly 5 is fixedly installed at the outer end of the transmission assembly 3, a lifting mechanism 6 is arranged at the top of the displacement assembly 5, a joint measurement swing arm 4 is fixedly installed at the upper end right side of the lifting mechanism 6, a measurement head 7 is fixedly installed at the outer end of the joint measurement swing arm 4, and a clamping mechanism 8 is fixedly installed at the top of the transmission assembly 3.

[0035] ​The transmission assembly 3 comprises a mounting positioning shaft 31 and a first motor 32, the first motor 32 is fixedly installed at the bottom of the support base 1, the mounting positioning shaft 31 is fixedly installed at the middle of the top of the support base 1, the top output end of the first motor 32 is fixedly installed with a driving gear 33 penetrating through the support base 1, the outer side of the mounting positioning shaft 31 is rotatably connected with a transmission gear 34, the transmission gear 34 and the driving gear 33 are meshedly connected, the top of the transmission gear 34 is fixedly installed with a connecting plate 35, the connecting plate 35 is rotatably connected to the outer surface of the rotating shaft, and the left side of the connecting plate 35 is fixedly connected with the displacement assembly 5.

[0036] The displacement assembly 5 comprises a displacement guide rail 51, the displacement guide rail 51 is fixedly installed at the left side of the connecting plate 35, the inner side of the displacement guide rail 51 is slidably connected with a sliding plate 52, the left end of the sliding plate 52 is fixedly connected with the lifting mechanism 6, the inner right side of the displacement guide rail 51 is fixedly installed with a second motor 53, the output end of the second motor 53 is fixedly installed with a first lead screw 54, and the first lead screw 54 and the sliding plate 52 are threadedly connected with each other.

[0037] Please refer to Figure 1 , Figure 4 , Figure 7 and Figure 8 , the lifting mechanism 6 comprises a third motor 61, the third motor 61 is fixedly installed at the bottom of the sliding plate 52, the top output end of the third motor 61 is fixedly installed with a fixing assembly 62 penetrating through the sliding plate 52, the top of the third motor 61 is installed with a sliding frame body 63 through the fixing assembly 62, the top of the sliding frame body 63 is fixedly installed with a telescopic pneumatic cylinder 64, the bottom output end of the telescopic pneumatic cylinder 64 is fixedly installed with a sliding block 65 penetrating through the top of the sliding frame body 63, the right side of the sliding block 65 is connected with the joint measurement swing arm 4, the sliding block 65 is in the shape of a convex character in plan view, the inner side of the sliding frame body 63 is also in the shape of a convex character, and the cross-sectional shape of the sliding plate 52 and the inner side of the displacement guide rail 51 are both in the shape of a convex character; by arranging the lifting mechanism 6, when in use, the sliding block 65 can be driven to slide in the inner side of the sliding frame body 63 by starting the telescopic pneumatic cylinder 64, so as to assist in driving the joint measurement swing arm 4 to move up and down, thereby facilitating height adjustment, and by arranging the inner side of the sliding frame body 63, the sliding block 65, the sliding plate 52 and the inner side of the displacement guide rail 51 in the shape of a convex character, the stability of the sliding plate 52, the sliding block 65 and the moving block 85 can be improved.

[0038] Please refer to Figure 1 , Figure 2 and Figure 6The clamping mechanism 8 comprises a product positioning seat 81 fixedly installed at the top of the mounting positioning shaft 31, the top of the product positioning seat 81 is fixedly installed with a track sliding frame 82, the inner side of the track sliding frame 82 is rotationally connected with a second lead screw 83, the two ends of the second lead screw 83 are oppositely threaded, the right side of the track sliding frame 82 is fixedly installed with a fourth motor 84, the output end of the fourth motor 84 is fixedly connected with the right end of the second lead screw 83, the two ends of the second lead screw 83 are both threadedly connected with a moving block 85, the top of the moving block 85 is fixedly installed with a positioning clamping block 86, the inner side of the positioning clamping block 86 is provided with a positioning clamping groove 87, the plan view of the positioning clamping groove 87 is isosceles trapezoidal, and the cross section of the positioning clamping block 86 is L-shaped. Through the clamping mechanism 8, when in use, the fourth motor 84 is started to drive the second lead screw 83 to drive the moving block 85 to slide in the inner side of the track sliding frame 82, so as to assist the mutual movement of the positioning clamping block 86, and then the central clamping of the device is facilitated, the use of the device is facilitated, the positioning clamping block 86 in the L-shaped and the positioning clamping groove 87 in the isosceles trapezoidal shape can improve the clamping stability of the arc-shaped product.

[0039] Please refer to Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8The fixing assembly 62 comprises a mounting seat 622 and a fixing seat 621, the mounting seat 622 is fixedly installed at the top output end of the third motor 61, the fixing seat 621 is fixedly installed at the bottom of the sliding frame body 63, the left side of the mounting seat 622 is fixedly installed with a fixing frame 623, the inner side of the fixing frame 623 is fixedly installed with limiting springs 624 at both ends, the right end of the limiting spring 624 is fixedly installed with a clamping block 625, the fixing seat 621 is inserted into the inner side of the mounting seat 622, the left side of the fixing seat 621 is provided with a limiting clamping groove 626, the clamping block 625 penetrates through the mounting seat 622 and is inserted into the inner side of the limiting clamping groove 626, the left side of the clamping block 625 is fixedly installed with a linkage shaft body 627, the left side of the linkage shaft body 627 is fixedly installed with a connecting pull rod 628 penetrating through the fixing frame 623, the combination of the connecting pull rod 628 and the linkage shaft body 627 is T-shaped in front view, the side surface of the clamping block 625 is a right trapezoid, the inclined surface of the clamping block 625 is arranged at the top right side, the side inner side of the mounting seat 622 is a regular hexagon in top view, and the fixing seat 621 is also a regular hexagon in bottom view; the limiting spring 624 is reset to drive the clamping block 625 to be inserted into the limiting clamping groove 626, so that the fixing seat 621 is positioned and installed, when disassembly is needed, the clamping block 625 can be pulled out by driving the linkage shaft body 627 to move outward, so that the clamping block 625 is pulled out, and then the disassembly is facilitated, the inclined surface of the clamping block 625 is arranged, when the fixing seat 621 is installed, the clamping block 625 is retracted through the inclined surface guidance, when the clamping block 625 contacts the limiting clamping groove 626, the limiting spring 624 is reset to drive the clamping block 625 to be inserted into the limiting clamping groove 626 for limiting, so that the device is convenient to disassemble and use, and the mounting seat 622 and the fixing seat 621 are regular hexagons, so that the stability that the fixing seat 621 is inserted into the inner side of the mounting seat 622 is improved.

[0040] Please refer to Figures 1-8 The supporting part 2 comprises supporting legs 21, the supporting legs 21 are fixedly installed at the bottom four corners of the supporting base 1, the bottom of each supporting leg 21 is fixedly installed with a base 22, the bottom of each base 22 is rotationally connected with a bottom supporting frame 23, the bottom of each bottom supporting frame 23 is rotationally connected with a universal wheel 24, the outer side of each base 22 is fixedly installed with a positioning plate 25, the outer end of each positioning plate 25 is threadedly connected with a fixing screw 26, the top of each fixing screw 26 is fixedly installed with an adjusting knob 27, the outer surface of each adjusting knob 27 is equally spaced apart and provided with an anti-skid pattern, and the bottom of each fixing screw 26 is fixedly installed with an anti-skid plate 28; the universal wheels 24 on the bases 22 and the bottom supporting frames 23 can roll on the ground, so that the device is convenient to move, after moving, the adjusting knob 27 can be arranged by rotating the fixing screw 26 to abut against the ground, the outer surface of the adjusting knob 27 is provided with an anti-skid pattern, so that the friction of the bottom of the device is improved, and the anti-skid plate 28 can improve the friction of the bottom of the fixing screw 26, so that the device can be more stably placed on the ground.

[0041] The working principle of the present application is: in use, the fixed seat 621 is inserted into the inside of the mounting seat 622, at this time the limiting spring 624 is reset to drive the clamping block 625 to be inserted into the limiting clamping groove 626 on the mounting seat 622, so as to assist the fixation of the fixed seat 621, and then the installation of the joint measurement swing arm 4 and the measurement head 7 is completed. During use, when it is necessary to carry and transport, the connecting pull rod 628 is pulled to drive the linkage shaft body 627 to pull out the clamping block 625 to resist the limiting spring 624 to shrink. At this time, the clamping block 625 leaves the limiting clamping groove 626, and the fixed seat 621 can be pulled out from the inside of the mounting seat 622, which is convenient for disassembly and assembly. When the device needs to be moved during use, the universal wheel 24 at the bottom of the bottom support frame 23 can be rolled on the ground to assist the movement of the device. When the movement is completed, the fixed screw 26 is moved downward by twisting the adjusting knob 27, and the anti-skid plate 28 is contacted with the ground by the fixed screw 26, which can assist the anti-skid of the whole device, so that the device is convenient to move during use. During use, the sliding block 65 is slid up and down inside the sliding frame body 63 by starting the telescopic cylinder 64, which can assist the adjustment of the height of the convenient measurement swing arm. During this period, the second motor 53 is started to run, which can drive the first screw 54 to rotate by the second motor 53, and the sliding plate 52 is slid inside the displacement guide rail 51 by the first screw 54, which can assist the lateral displacement of the joint measurement swing arm 4. By starting the first motor 32 to run, the main gear 33 on the top of the support base 1 is rotated by the first motor 32. At this time, the main gear 33 and the driven gear are meshed with each other, and the driven gear is rotationally connected to the outer surface of the mounting positioning shaft 31. The driven gear can be rotated by the main gear 33, and the connecting plate 35 can be rotated by the driven gear, which can drive the displacement guide rail 51 to rotate. At this time, the displacement guide rail 51 is rotated outside the product positioning seat 81, which can assist the movement of the joint measurement swing arm 4 and the measurement head 7. By running the third motor 61, the joint measurement swing arm 4 and the measurement head 7 can be adaptively adjusted. In combination with the sliding plate 52 driven to rotate, the position adjustment of the joint measurement swing arm 4 and the measurement head 7 in the horizontal and vertical directions is realized, so that the joint measurement swing arm 4 and the measurement head 7 can be adjusted in the circumferential direction outside the product positioning seat 81, which has high practicality. During measurement, the clamping mechanism 8 is provided, so that the product to be measured can be placed on the top of the product positioning seat 81 during use of the device. At this time, the fourth motor 84 is started to run, which can drive the second screw 83 to rotate by the fourth motor 84. The two groups of moving blocks 85 are synchronously driven to slide inside the track sliding frame 82 by the second screw 83, which can assist the movement of the positioning clamping block 86 by the moving block 85. At this time, the product can be clamped by clamping. Since the positioning clamping block 86 is synchronously moved, the product is in a uniform position after each clamping.Further, it is convenient to perform repeated measurements.

[0042] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The presently disclosed embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No feature of the application is to be construed as limiting the scope of the claims to its exact counterpart.

[0043] Furthermore, it should be understood that although the description above refers to particular embodiments, the description is illustrative only and is not intended to limit the claimed application in any way. The various embodiments set forth herein are not mutually exclusive, but can be combined in other embodiments. The various embodiments set forth herein are not mutually exclusive, but can be combined in other embodiments. The various embodiments set forth herein are not mutually exclusive, but can be combined in other embodiments.

Claims

1. An articulated arm dimension measuring machine, characterized in that: The invention comprises a support base (1), wherein support components (2) are fixedly mounted at the four corners of the bottom of the support base (1), a transmission assembly (3) is provided on the top of the support base (1), a displacement assembly (5) is fixedly mounted on the outer end of the transmission assembly (3), a lifting mechanism (6) is provided on the top of the displacement assembly (5), a joint measurement swing arm (4) is fixedly mounted on the right side of the upper end of the lifting mechanism (6), a measuring head (7) is fixedly mounted on the outer end of the joint measurement swing arm (4), and a clamping mechanism (8) is fixedly mounted on the top of the transmission assembly (3); The transmission assembly (3) comprises a mounting and positioning shaft (31) and a first motor (32), wherein the first motor (32) is fixedly mounted on the bottom of the support base (1), the mounting and positioning shaft (31) is fixedly mounted on the top middle of the support base (1), the top output end of the first motor (32) passes through the support base (1) and is fixedly mounted with a driving gear (33), the outer side of the mounting and positioning shaft (31) is rotatably connected to a transmission gear (34), the transmission gear (34) and the driving gear (33) are meshed and connected with each other, a connecting plate (35) is fixedly mounted on the top of the transmission gear (34), the connecting plate (35) is rotatably connected to the outer surface of the rotating shaft, and the left side of the connecting plate (35) is fixedly connected to the displacement assembly (5); The displacement assembly (5) includes a displacement guide rail (51), the displacement guide rail (51) is fixedly mounted on the left side of the connecting plate (35), a sliding plate (52) is slidably connected to the inner side of the displacement guide rail (51), the left end of the sliding plate (52) is fixedly connected to the lifting mechanism (6), a second motor (53) is fixedly mounted in the middle of the right side of the displacement guide rail (51), a first screw rod (54) is fixedly mounted on the output end of the second motor (53), and the first screw rod (54) and the sliding plate (52) are threadedly connected to each other; The lifting mechanism (6) includes a third motor (61), the third motor (61) is fixedly mounted on the bottom of the sliding plate (52), the top output end of the third motor (61) passes through the sliding plate (52) and is fixedly mounted with a fixing assembly (62), the top of the third motor (61) is mounted with a sliding frame (63) through the fixing assembly (62), the top of the sliding frame (63) is fixedly mounted with a telescopic cylinder (64), the bottom output end of the telescopic cylinder (64) passes through the top of the sliding frame (63) and is fixedly mounted with a sliding block (65), and the right side of the sliding block (65) is connected to the joint measurement swing arm (4); The clamping mechanism (8) includes a product positioning seat (81), the product positioning seat (81) is fixedly mounted on the top of the mounting positioning shaft (31), a track sliding frame (82) is fixedly mounted on the top of the product positioning seat (81), the inner side of the track sliding frame (82) is rotatably connected to a second screw rod (83), the two ends of the second screw rod (83) have opposite screw rotation directions, a fourth motor (84) is fixedly mounted on the right side of the track sliding frame (82), the output end of the fourth motor (84) is fixedly connected to the right end of the second screw rod (83), both ends of the second screw rod (83) are threadedly connected to a moving block (85), and a positioning clamping block (86) is fixedly mounted on the top of the moving block (85); The support component (2) comprises support legs (21), the support legs (21) are fixedly mounted at the four corners of the bottom of the support base (1), the bottoms of the support legs (21) are fixedly mounted with bases (22), the bottoms of the bases (22) are rotatably connected to bottom support frames (23), and the bottoms of the bottom support frames (23) are rotatably connected to universal wheels (24).

2. The articulated arm dimension measuring machine according to claim 1, characterized in that: The top view shape of the sliding block (65) is a convex shape, the inner side shape of the sliding frame (63) is also set to a convex shape, and the cross-sectional shape of the sliding plate (52) and the inner side cross-sectional shape of the displacement guide rail (51) are both set to a convex shape.

3. The articulated arm dimension measuring machine according to claim 1, characterized in that: A positioning clamping groove (87) is provided on the inner side of the positioning clamping block (86). The top view shape of the positioning clamping groove (87) is an isosceles trapezoid. The cross-sectional shape of the positioning clamping block (86) is L-shaped.

4. The articulated arm dimension measuring machine according to claim 3, characterized in that: The fixing assembly (62) comprises a mounting seat (622) and a fixing seat (621), wherein the mounting seat (622) is fixedly mounted on the top output end of the third motor (61), and the fixing seat (621) is fixedly mounted on the bottom of the sliding frame (63). A fixing frame (623) is fixedly mounted on the left side of the mounting seat (622), and both ends of the inner side of the fixing frame (623) are fixedly mounted with a limiting spring (624), and a clamping block (625) is fixedly mounted on the right end of the limiting spring (624). The fixing seat (621) is plugged into the inner side of the mounting seat (622), and a limiting card slot (626) is provided on the left side of the fixing seat (621). The clamping block (625) passes through the mounting seat (622) and is plugged into the inner side of the limiting card slot (626).

5. The articulated arm dimension measuring machine according to claim 4, characterized in that: A linkage shaft (627) is fixedly installed on the left side of the block (625), and a connecting rod (628) is fixedly installed on the left side of the linkage shaft (627) through the fixing frame (623). The front shape of the combination of the connecting rod (628) and the linkage shaft (627) is T-shaped.

6. The articulated arm dimension measuring machine according to claim 1, characterized in that: A positioning plate (25) is fixedly installed on the outer side of the base (22), the outer end of the positioning plate (25) is threadedly connected to a fixing screw (26), the top of the fixing screw (26) is fixedly installed with an adjusting knob (27), the outer surface of the adjusting knob (27) is provided with anti-slip grooves at equal intervals, and the bottom of the fixing screw (26) is fixedly installed with an anti-slip plate (28).

7. The articulated arm dimension measuring machine according to claim 4, characterized in that: The side shape of the clamping block (625) is a right-angled trapezoid, the inclined surface of the clamping block (625) is arranged on the right side of the top, the inner side of the mounting seat (622) is a regular hexagon when viewed from above, and the fixing seat (621) is also arranged to be a regular hexagon when viewed from above.

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