Positioning device for calibrating roundness of measuring ball of coordinate measuring machine

Abstract

The utility model discloses a positioning device for calibrating roundness of a measuring ball of a coordinate measuring machine, and relates to the technical field of positioning devices of coordinate measuring machines. The measuring machine comprises a base, a measuring machine body is fixedly installed on the right side of the top of the base, a liftable probe mechanism is arranged on the front side of the measuring machine body, and a rotatable rotating base is movably installed on the left side of the top of the base. A third servo motor drives a C-shaped rod to rotate according to a preset angle and rotating speed, the C-shaped rod drives a driving assembly, two telescopic rod assemblies, two connecting rods and two arc-shaped blocks to incline by a certain angle, and then the driving assembly is controlled to enable the two telescopic rod assemblies to be away from each other; the two telescopic rod assemblies drive the two connecting rods and the two arc-shaped blocks to be far away from each other, clamping of the ball can be released, at the moment, the ball is turned over by a certain angle, the operation is repeated and matched with rotation of the rotating base, and comprehensive detection of the ball can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices for coordinate measuring machines, in particular to a positioning device used for calibrating the roundness of a measuring ball of a coordinate measuring machine. Background Art

[0002] The positioning device used to measure the roundness of a ball in a coordinate measuring machine is a complex and sophisticated system that combines technologies from multiple fields such as mechanics, electronics, and computer technology. During the measurement process, the positioning device first places the sphere on a support structure and rotates the sphere in a specific direction through a rotating mechanism. The probe is then used to detect points on the surface of the sphere and the coordinate values ​​of these points are transmitted to the control system. The control system calculates the roundness of the sphere based on these coordinate values ​​and outputs the results to the user interface.

[0003] However, in actual use, the positioning device for measuring the roundness of a ball in an existing coordinate measuring machine mainly relies on a rotating base to drive the ball to rotate horizontally for measurement, and is unable to flip the ball at a certain angle. This will result in the position where the ball contacts the placement table and cannot be revealed and measured. Therefore, a positioning device for calibrating a coordinate measuring machine to measure the roundness of a ball is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the positioning device for measuring the roundness of a ball in the existing coordinate measuring machine mainly relies on a rotating base to drive the ball to rotate horizontally for measurement during actual use, and the ball cannot be flipped at a certain angle. The utility model provides a positioning device for calibrating the coordinate measuring machine to measure the roundness of a ball.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A positioning device for calibrating a coordinate measuring machine to measure the roundness of a ball comprises a base, a measuring machine body is fixedly installed on the top right side of the base, a liftable probe mechanism is arranged on the front side of the measuring machine body, a rotatable rotating base is movably installed on the top left side of the base, a hydraulic rod is arranged on the top left side of the base, a transmission assembly for driving the hydraulic rod to move forward and backward is arranged on the top left side of the base, a rotatable C-rod is movably installed on the side of the upper end of the hydraulic rod close to the rotating base, two groups of telescopic rod assemblies with telescopic function are arranged on the side of the C-rod away from the hydraulic rod, a driving assembly for driving the two groups of telescopic rod assemblies to move away from or close to each other is arranged inside the C-rod, a servo motor three for driving the C-rod to rotate is fixedly installed on the side of the upper end of the hydraulic rod away from the C-rod, a connecting rod is arranged on the side where the output ends of the two groups of telescopic rod assemblies are close to each other, and an arc block is fixedly installed on the end of each connecting rod away from the corresponding telescopic rod assembly.

[0007] Furthermore, the transmission assembly includes a groove, a groove is opened on the left side of the top of the base, a servo motor is fixedly installed inside the groove, a screw rod is fixedly installed on the output end of the servo motor, a movable block is threadedly connected to the screw rod, and a hydraulic rod is fixedly installed on the top of the movable block.

[0008] Furthermore, the driving assembly includes a U-shaped rod, a U-shaped rod is fixedly installed on the top of the C-shaped rod, a servo motor 2 is fixedly installed on the side wall of the U-shaped rod, a gear is fixedly installed on the output end of the servo motor 2, and a slide groove is provided on the internal top and bottom surfaces of the C-shaped rod, a slide rod is movably installed inside each slide groove, racks are fixedly installed on the side where the two slide rods are close to each other, and the two racks are meshed with the gears, and the two telescopic rod assemblies are respectively arranged at the two ends of the two racks that are far away from each other.

[0009] Furthermore, the telescopic rod assembly includes a connecting block, each connecting block is fixedly connected to an adjacent rack, a square tube is fixedly installed on a side of each connecting block away from the C-shaped rod, a telescopic rod is movably installed inside each square tube, strip holes are opened on the sides of the two square tubes away from each other, a threaded rod is arranged inside each strip hole, each threaded rod is fixedly connected to an adjacent telescopic rod, a nut is threadedly connected to each threaded rod, and the two connecting rods are respectively fixedly connected to the adjacent telescopic rods.

[0010] Furthermore, a limiting groove is provided on the inner wall surface of each of the square tubes, a limiting block is movably installed inside each limiting groove, and each limiting block is fixedly connected to an adjacent telescopic rod.

[0011] Furthermore, the side wall surface of each telescopic rod is provided with scales.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model first places the ball to be measured on the rotating base, then starts the measuring machine body, and after the probe mechanism is lifted to a certain height, the rotating base drives the ball to rotate to measure the ball. If a more comprehensive inspection of the ball flip is required, it is only necessary to control the transmission component to move the hydraulic rod toward the rotating base. After the hydraulic rod moves to a suitable position, the ball will be placed between the two arc blocks. At this time, the driving component is controlled to make the two sets of telescopic rod components approach each other, and the two sets of telescopic rod components drive the two connecting rods and the two arc blocks to approach each other. Until the two arc blocks clamp the ball, then control servo motor three, servo motor three drives the C-rod to rotate according to the preset angle and speed, the C-rod drives the drive assembly, two sets of telescopic rod assemblies, two connecting rods, and two arc blocks to tilt at a certain angle, and then control the drive assembly to make the two sets of telescopic rod assemblies move away from each other, the two telescopic rod assemblies drive the two connecting rods and the two arc blocks to move away from each other, and the clamping of the ball can be released. At this time, the ball also flips at a certain angle. Repeat the above operations and cooperate with the rotation of the rotating base to achieve comprehensive detection of the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a specific schematic diagram of the drive assembly of the utility model;

[0016] Figure 3 It is a side view of the utility model;

[0017] Figure 4 It is an exploded schematic diagram of the telescopic rod assembly of the utility model;

[0018] 1. Base; 2. Measuring machine body; 3. Probe mechanism; 4. Rotating base; 5. Hydraulic rod; 6. Transmission assembly; 61. Groove; 62. Servo motor one; 63. Screw rod; 64. Movable block; 7. C-shaped rod; 8. Telescopic rod assembly; 81. Connecting block; 82. Square tube; 83. Telescopic rod; 84. Bar hole; 85. Threaded rod; 86. Nut; 87. Limiting groove; 88. Limiting block; 89. Scale; 9. Drive assembly; 91. U-shaped rod; 92. Servo motor two; 93. Gear; 94. Slide groove; 95. Slide rod; 96. Rack; 10. Servo motor three; 11. Connecting rod; 12. Arc block. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figures 1 to 4As shown, a positioning device for calibrating the roundness of a ball measured by a coordinate measuring machine comprises a base 1, a measuring machine body 2 is fixedly installed on the top right side of the base 1, a liftable probe mechanism 3 is arranged on the front side of the measuring machine body 2, a rotatable rotating base 4 is movably installed on the top left side of the base 1, a hydraulic rod 5 is arranged on the top left side of the base 1, a transmission assembly 6 for driving the hydraulic rod 5 to move forward and backward is arranged on the top left side of the base 1, a rotatable C-shaped rod 7 is movably installed on the side of the upper end of the hydraulic rod 5 close to the rotating base 4, and a C-shaped rod 7 is arranged on the side away from the hydraulic rod 5 There are two sets of telescopic rod assemblies 8 with telescopic functions. A driving assembly 9 is arranged inside the C-shaped rod 7 for driving the two sets of telescopic rod assemblies 8 to move away from or close to each other. A servo motor 10 for driving the C-shaped rod 7 to rotate is fixedly installed on the side of the upper end of the hydraulic rod 5 away from the C-shaped rod 7. A connecting rod 11 is arranged on the side where the output ends of the two sets of telescopic rod assemblies 8 are close to each other. An arc block 12 is fixedly installed on the end of each connecting rod 11 away from the corresponding telescopic rod assembly 8. It should be noted that the ball to be measured is first placed on the rotating base 4, and then the measuring machine body is started. 2. After the probe mechanism 3 is lifted to a certain height, the ball can be measured by rotating the ball in coordination with the rotating base 4. If a more comprehensive detection of the ball flipping is required, the transmission assembly 6 is controlled to move the hydraulic rod 5 toward the rotating base 4. After the hydraulic rod 5 moves to a suitable position, the ball will be placed between the two arc blocks 12. At this time, the driving assembly 9 is controlled to make the two sets of telescopic rod assemblies 8 approach each other. The two sets of telescopic rod assemblies 8 drive the two connecting rods 11 and the two arc blocks 12 to approach each other until the two arc blocks 12 clamp the ball. At this time, the driving assembly 9 is controlled to move the two connecting rods 11 and the two arc blocks 12 to approach each other. Servo motor three 10, the servo motor three 10 drives the C-shaped rod 7 to rotate according to the preset angle and speed, the C-shaped rod 7 drives the driving component 9, the two sets of telescopic rod components 8, the two connecting rods 11, and the two arc blocks 12 to tilt at a certain angle, and then the driving component 9 is controlled to make the two sets of telescopic rod components 8 move away from each other, the two telescopic rod components 8 drive the two connecting rods 11 and the two arc blocks 12 to move away from each other, and the clamping of the ball can be released. At this time, the ball also flips at a certain angle. Repeating the above operations and coordinating with the rotation of the rotating base 4 can achieve comprehensive detection of the ball.

[0024] like Figures 1 to 3 As shown, the transmission assembly 6 includes a groove 61, and a groove 61 is opened on the left side of the top of the base 1. A servo motor 62 is fixedly installed inside the groove 61, and a screw rod 63 is fixedly installed on the output end of the servo motor 62. A movable block 64 is threadedly connected to the screw rod 63, and the hydraulic rod 5 is fixedly installed on the top of the movable block 64. It should be noted that the servo motor 62 can be started to drive the screw rod 63 to rotate back and forth, so that the movable block 64 can reciprocate in a straight line. The movement of the movable block 64 drives the hydraulic rod 5 to move synchronously at the same time, and the position of the hydraulic rod 5 is adjusted as needed.

[0025] like Figure 1 , Figure 2 As shown, the driving assembly 9 includes a U-shaped rod 91, a U-shaped rod 91 is fixedly installed on the top of the C-shaped rod 7, a servo motor 92 is fixedly installed on the side wall of the U-shaped rod 91, a gear 93 is fixedly installed on the output end of the servo motor 92, and a slide groove 94 is provided on the internal top and bottom surfaces of the C-shaped rod 7, and a slide rod 95 is movably installed inside each slide groove 94, and a rack 96 is fixedly installed on the side where the two slide rods 95 are close to each other, and the two racks 96 are meshed and connected with the gear 93, and the two telescopic rod assemblies 8 are respectively arranged at the two ends of the two racks 96 that are away from each other. It should be noted that the start of the servo motor 92 can drive the gear 93 to rotate reciprocatingly, and the rotation of the gear 93 can drive the two racks 96 to reciprocate linearly, and the movement of each rack 96 drives the slide rod 95 connected to it to slide inside the corresponding slide groove 94, and the linear reciprocating motion of the two racks 96 can make the two groups of telescopic rod assemblies 8 move away from or close to each other.

[0026] like Figures 1 to 4 As shown, the telescopic rod assembly 8 includes a connecting block 81, each connecting block 81 is fixedly connected to an adjacent rack 96, a square tube 82 is fixedly installed on the side of each connecting block 81 away from the C-shaped rod 7, a telescopic rod 83 is movably installed inside each square tube 82, a strip hole 84 is opened on the side of the two square tubes 82 away from each other, a threaded rod 85 is arranged inside each strip hole 84, each threaded rod 85 is fixedly connected to the adjacent telescopic rod 83, each threaded rod 85 is threadedly connected with a nut 86, and two connecting rods 11 are respectively fixedly connected to the adjacent telescopic rods 83. It should be noted that the movement of each rack 96 drives the connecting block 81 connected to it to move synchronously, by dragging the two telescopic rods 83 to the appropriate position, and then rotating the two nuts 86 to fix the current position of the two telescopic rods 83, the movement of each telescopic rod 83 drives the corresponding connecting rod 11 and the arc block 12 to move synchronously, so as to facilitate the detection of balls with different diameters.

[0027] like Figures 1 to 4 As shown, a limiting groove 87 is provided on the inner wall surface of each square tube 82, and a limiting block 88 is movably installed inside each limiting groove 87. Each limiting block 88 is fixedly connected to the adjacent telescopic rod 83. It should be noted that the limiting groove 87 and the limiting block 88 cooperate to prevent the telescopic rod 83 from detaching from the inside of the square tube 82. When the telescopic rod 83 moves, it will drive the limiting block 88 to slide inside the limiting groove 87.

[0028] like Figure 4 As shown, the side wall surface of each telescopic rod 83 is provided with a scale 89. It should be noted that the scale 89 is mainly used to determine the positions of the two telescopic rods 83 to ensure that the lengths of the two telescopic rods 83 exposed from the inside of the corresponding square tube 82 are the same.

[0029] In summary:

[0030] First, place the ball to be measured on the rotating base 4, then start the measuring machine body 2, and after the probe mechanism 3 is raised and lowered to a certain height, the ball can be measured by cooperating with the rotating base 4 to drive the ball to rotate. If a more comprehensive inspection of the ball flip is required, it is only necessary to control the transmission component 6 to move the hydraulic rod 5 toward the rotating base 4. After the hydraulic rod 5 moves to a suitable position, the ball will be placed between the two arc blocks 12. At this time, the driving component 9 is controlled to make the two sets of telescopic rod assemblies 8 approach each other. The two sets of telescopic rod assemblies 8 drive the two connecting rods 11 and the two arc blocks 12 to approach each other until the two arc blocks are close to each other. The block 12 clamps the ball, and at this time the servo motor three 10 is controlled, and the servo motor three 10 drives the C-shaped rod 7 to rotate according to the preset angle and speed, and the C-shaped rod 7 drives the driving component 9, the two sets of telescopic rod components 8, the two connecting rods 11, and the two arc blocks 12 to tilt at a certain angle, and then the driving component 9 is controlled to make the two sets of telescopic rod components 8 move away from each other, and the two telescopic rod components 8 drive the two connecting rods 11 and the two arc blocks 12 to move away from each other, so that the clamping of the ball can be released. At this time, the ball also flips at a certain angle, and the above operation is repeated and coordinated with the rotation of the rotating base 4, so that the ball can be fully detected.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A positioning device for calibrating a coordinate measuring machine for measuring the roundness of a ball, comprising a base (1), a measuring machine body (2) being fixedly mounted on the top right side of the base (1), a liftable probe mechanism (3) being arranged on the front side of the measuring machine body (2), and a rotatable rotating base (4) being movably mounted on the top left side of the base (1), characterized in that: A hydraulic rod (5) is arranged on the left side of the top of the base (1); a transmission assembly (6) for driving the hydraulic rod (5) to move forward and backward is arranged on the left side of the top of the base (1); a rotatable C-shaped rod (7) is movably installed on the side of the upper end of the hydraulic rod (5) close to the rotating base (4); two groups of telescopic rod assemblies (8) with telescopic function are arranged on the side of the C-shaped rod (7) away from the hydraulic rod (5); a driving assembly (9) for driving the two groups of telescopic rod assemblies (8) to move away from or close to each other is arranged inside the C-shaped rod (7); a servo motor three (10) for driving the C-shaped rod (7) to rotate is fixedly installed on the side of the upper end of the hydraulic rod (5) away from the C-shaped rod (7); a connecting rod (11) is arranged on the side of the output ends of the two groups of telescopic rod assemblies (8) close to each other; and an arc block (12) is fixedly installed on the end of each connecting rod (11) away from the corresponding telescopic rod assembly (8).

2. A positioning device for calibrating a coordinate measuring machine for measuring the roundness of a ball according to claim 1, characterized in that: The transmission assembly (6) comprises a groove (61). The left side of the top of the base (1) is provided with the groove (61). A servo motor (62) is fixedly installed inside the groove (61). A screw rod (63) is fixedly installed at the output end of the servo motor (62). A movable block (64) is threadedly connected to the screw rod (63). The hydraulic rod (5) is fixedly installed on the top of the movable block (64).

3. The positioning device for calibrating a coordinate measuring machine for measuring the roundness of a ball according to claim 1, characterized in that: The driving assembly (9) comprises a U-shaped rod (91), the top of the C-shaped rod (7) is fixedly mounted with the U-shaped rod (91), the side wall of the U-shaped rod (91) is fixedly mounted with a servo motor 2 (92), the output end of the servo motor 2 (92) is fixedly mounted with a gear (93), the top and bottom surfaces of the C-shaped rod (7) are both provided with a slide groove (94), each slide groove (94) is movably mounted with a slide rod (95), the sides of the two slide rods (95) close to each other are fixedly mounted with a rack (96), the two racks (96) are meshedly connected with the gear (93), and the two telescopic rod assemblies (8) are respectively arranged at the two ends of the two racks (96) away from each other.

4. A positioning device for calibrating a coordinate measuring machine for measuring the roundness of a ball according to claim 1, characterized in that: The telescopic rod assembly (8) comprises a connecting block (81), each connecting block (81) is fixedly connected to an adjacent rack (96), a square tube (82) is fixedly mounted on a side of each connecting block (81) away from the C-shaped rod (7), a telescopic rod (83) is movably mounted inside each square tube (82), a strip hole (84) is opened on a side of the two square tubes (82) away from each other, a threaded rod (85) is arranged inside each strip hole (84), each threaded rod (85) is fixedly connected to an adjacent telescopic rod (83), each threaded rod (85) is threadedly connected to a nut (86), and two connecting rods (11) are respectively fixedly connected to adjacent telescopic rods (83).

5. A positioning device for calibrating a coordinate measuring machine for measuring the roundness of a ball according to claim 4, characterized in that: The inner wall surface of each square tube (82) is provided with a limiting groove (87), and a limiting block (88) is movably installed inside each limiting groove (87), and each limiting block (88) is fixedly connected to an adjacent telescopic rod (83).

6. A positioning device for calibrating a coordinate measuring machine for measuring the roundness of a ball according to claim 4, characterized in that: The side wall surface of each telescopic rod (83) is provided with a scale (89).

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