Three-coordinate measuring machine convenient for overturning workpiece

Abstract

The utility model discloses a three-coordinate measuring machine convenient for overturning a workpiece, and belongs to the technical field of coordinate measuring machines. Comprising a base, a portal frame moving back and forth on the base, a telescopic rod moving left and right on the portal frame, and a probe arranged at the lower end of the telescopic rod and capable of rotating transversely and longitudinally. Rectangular holes are formed in frame bodies on the two sides of the portal frame respectively, supporting tables are arranged on the two sides of the frame bodies of the portal frame and located above the rectangular holes respectively, first air cylinders are arranged above the supporting tables, air cylinder shafts of the first air cylinders penetrate through the supporting tables, moving boxes are arranged at the ends of the first air cylinders, and second air cylinders with air cylinder shafts penetrating through the rectangular holes are arranged in the moving boxes. A first motor is arranged at the end of a cylinder shaft of the second cylinder, and a rubber pad is arranged at the end of an output shaft of the first motor. The first air cylinder and the second air cylinder enable the two rubber pads to fix the middle of a workpiece and then drive the workpiece to rise, then the two first motors can drive the workpiece to rotate, and finally the first air cylinder can inversely place the workpiece on the base, so that the probe can conveniently measure the bottom face of the workpiece.

Description

Technical Field

[0001] The utility model provides a three-coordinate measuring machine which is convenient for turning over a workpiece and belongs to the technical field of coordinate measuring machines. Background Art

[0002] The three-dimensional coordinate measuring machine is a high-precision testing equipment used to measure the geometric size, shape and position tolerance of various workpieces. It is designed based on the principle of three-dimensional space coordinate system and can provide accurate three-dimensional coordinate data of workpiece surface points. The three-dimensional coordinate measuring machine is widely used in machinery, electronics, automobiles, aerospace and other fields. It is an indispensable tool for quality control, reverse engineering, mold manufacturing and other links.

[0003] However, although the probe of the current three-dimensional coordinate measuring machine can move forward and backward, left and right, up and down, and rotate horizontally and vertically, the bottom surface of the workpiece placed on the platform will contact the platform. Therefore, it is inconvenient for the three-dimensional coordinate measuring machine to measure the bottom surface of the workpiece. If a long probe is used, the deflection will increase, affecting the measurement accuracy. In addition, the rigidity of the long probe is not as good as that of the short probe, which will lead to an increase in the error of the measurement result. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the current three-coordinate measuring machine is not convenient for measuring the bottom surface of a workpiece.

[0005] In order to solve the above problems, the utility model proposes a technical solution: a three-dimensional coordinate measuring machine that is convenient for turning over a workpiece, comprising a base, a gantry that moves forward and backward on the base, a telescopic rod that moves left and right on the gantry, and a probe that is at the lower end of the telescopic rod and can rotate horizontally and vertically; rectangular holes are respectively provided on the frame body on both sides of the gantry, support platforms are respectively provided on both sides of the frame body of the gantry above the rectangular holes, a cylinder 1 is provided above the support platform, a cylinder shaft of the cylinder 1 passes through the support platform and a moving box is provided at the end thereof, a cylinder 2 whose cylinder shaft passes through the rectangular hole is provided in the moving box, a motor 1 is provided at the end of the cylinder shaft of the cylinder 2, and a rubber pad is provided at the end of the output shaft of the motor 1.

[0006] As an improvement, T-shaped slots are provided on both sides of the rectangular hole on the outside of the gantry, and T-shaped platforms corresponding to the T-shaped slots are provided on both sides of the moving box;

[0007] As an improvement, when the cylinder axis of cylinder one is extended, the cylinder axis of cylinder two does not contact the lower end of the rectangular hole, and when the cylinder axis of cylinder one is shortened, the cylinder axis of cylinder two does not contact the upper end of the rectangular hole;

[0008] As an improvement, when the cylinder shafts of the two cylinders 2 are extended, the rubber pads at the ends of the output shafts of the two motors 1 at the ends of the cylinder shafts of the two cylinders 2 are in contact with each other;

[0009] As an improvement, the output shafts of the two motors one at the ends of the cylinder shafts of the cylinder two rotate in opposite directions;

[0010] As an improvement, a slide groove 1 is provided on both sides of the base, a rotating screw rod 1 is provided in the slide groove 1, a motor 2 is provided on one side of the base, the motor 2 passes through the base key to connect the screw rod 1, the lower part of the frame on both sides of the gantry is in the slide groove 1, and the screw rod 1 passes through the frame on both sides of the gantry;

[0011] As an improvement, a slide groove is provided at the lower part of the frame body of the upper part of the gantry, and a guide rod and a rotating screw rod are provided in the slide groove. A motor is provided at one end of the gantry located at the slide groove to drive the screw rod to rotate, and an L-shaped connecting rod is provided on one side of the telescopic rod, and the guide rod and the screw rod pass through the connecting rod.

[0012] Beneficial effects of the utility model:

[0013] A support platform is provided, and cylinder 1 for controlling the upward and downward movement of a movable box is provided on the support platform, cylinder 2 is provided in the control box, motor 1 is provided at the end of the cylinder shaft of cylinder 2, and a rubber pad is provided at the end of the output shaft of motor 1, so that two rubber pads can fix the middle of the workpiece through cylinder 1 and cylinder 2, and then the two cylinders 1 are started at the same time to drive the workpiece to rise, and then the two motors 1 at the ends of the cylinder shaft of cylinder 2 are started at the same time to drive the workpiece to rotate, and finally the two cylinders 1 are started at the same time to place the workpiece upside down on the base, so that the probe can easily measure the bottom surface of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a three-coordinate measuring machine which is convenient for turning over a workpiece.

[0015] Figure 2 The utility model is a cross-sectional view of a gantry of a three-coordinate measuring machine which is convenient for turning over a workpiece.

[0016] Figure 3 The utility model is a schematic diagram of the cooperation between a T-slot and a T-table of a three-coordinate measuring machine which is convenient for turning over a workpiece.

[0017] 1. Base; 2. Gantry; 3. Telescopic rod; 4. Probe; 5. Rectangular hole; 6. Support table; 7. Cylinder 1; 8. Moving box; 9. Cylinder 2; 10. Motor 1; 11. T-slot; 12. T-table; 13. Slide 1; 14. Screw 1; 15. Motor 2; 16. Slide 2; 17. Guide rod; 18. Screw 2; 19. Connecting rod. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] according to Figure 1—3: The utility model provides a three-dimensional coordinate measuring machine that is convenient for turning over a workpiece: it comprises a base 1, a gantry 2 that moves forward and backward on the base 1, a telescopic rod 3 that moves left and right on the gantry 2, and a probe 4 that is at the lower end of the telescopic rod 3 and can rotate horizontally and vertically; rectangular holes 5 are respectively provided on the frame body on both sides of the gantry 2, and support platforms 6 are respectively provided on both sides of the frame body of the gantry 2 above the rectangular holes 5, and a cylinder 7 is provided above the support platform 6, and the cylinder shaft of the cylinder 7 passes through the support platform 6 and a moving box 8 is provided at the end thereof, and the moving box 8 is provided inside A cylinder 2 9 is provided, the cylinder shaft of which passes through the rectangular hole 5, a motor 10 is provided at the end of the cylinder shaft of the cylinder 2 9, and a rubber pad is provided at the end of the output shaft of the motor 10. The two rubber pads can fix the middle of the workpiece through the cylinder 1 7 and the cylinder 2 9, and then the two cylinders 1 7 are started at the same time to drive the workpiece to rise, and then the two motors 10 at the ends of the cylinder shaft of the cylinder 2 9 are started at the same time to drive the workpiece to rotate, and finally the two cylinders 1 7 are started at the same time to put the workpiece upside down on the base 1, so that the probe 4 can easily measure the bottom surface of the workpiece;

[0020] according to Figure 3 As shown: T-shaped slots 11 are respectively provided on both sides of the rectangular hole 5 on the outside of the gantry 2, and T-shaped platforms 12 corresponding to the T-shaped slots 11 are provided on both sides of the moving box 8; in this way, after the two rubber pads fix the workpiece, the two moving boxes 8 will not move outward;

[0021] according to Figure 1 As shown: when the cylinder shaft of cylinder 1 7 is extended, the cylinder shaft of cylinder 2 9 does not contact the lower end of rectangular hole 5; when the cylinder shaft of cylinder 1 7 is shortened, the cylinder shaft of cylinder 2 9 does not contact the upper end of rectangular hole 5; when the cylinder shafts of two cylinders 2 9 are extended, the rubber pads at the ends of the output shafts of two motors 10 at the ends of the cylinder shafts of cylinder 2 9 are in contact with each other, and the output shafts of two motors 10 at the ends of the cylinder shafts of cylinder 2 9 turn in opposite directions; in this way, the movable box 8 and cylinder 2 9 can be driven to rise and fall by cylinder 1 7, and starting cylinder 2 9 can make the rubber pad contact the workpiece; the two motors 10 with opposite output shafts can drive the workpiece to rotate, thereby inverting the workpiece;

[0022] according to Figure 1 , 2As shown: a slide groove 13 is provided on both sides of the base 1, a rotating screw rod 14 is provided in the slide groove 13, a motor 2 is provided on one side of the base 1, the motor 2 15 passes through the base 1 key to connect the screw rod 14, the lower parts of the frames on both sides of the gantry 2 are in the slide groove 13, the screw rod 14 passes through the frames on both sides of the gantry 2, a slide groove 2 16 is provided on the lower part of the frame on the upper part of the gantry 2, a guide rod 17 and a rotating screw rod 2 18 are provided in the slide groove 2 16, the gantry 2 is provided with a motor 10 at one end of the slide groove 2 16 for driving the screw rod 2 18 to rotate, an L-shaped connecting rod 19 is provided on one side of the telescopic rod 3, the guide rod 17 and the screw rod 2 18 pass through the connecting rod 19; in this way, the screw rod 14 can be driven to rotate by starting the motor 2 15, so that the gantry 2 can be moved, and the screw rod 2 18 can be driven to rotate by starting the motor 10, so that the telescopic rod 3 can be moved, so that the device can measure different positions of the workpiece.

[0023] Principle of the utility model: when in use, first place the workpiece in the middle of the base 1, then start the motor 15 to drive the screw rod 14 to rotate, so that the gantry 2 moves, and start the motor 10 to drive the screw rod 18 to rotate, so that the telescopic rod 3 moves, and by changing the length of the telescopic rod 3 and adjusting the angle of the head 4, the position of the workpiece is measured. When it is necessary to measure the bottom surface of the workpiece, first start the motor 10 to rotate the screw rod 18, and the screw rod 18 rotates to cooperate with the guide rod 17 to move the telescopic rod 3, and then shorten the length of the telescopic rod 3 to make the probe 4 at a corner of the upper part of the gantry 2, and then make the rectangular hole 5 of the gantry 2 at the workpiece. On both sides of the middle part, start cylinder 1 7 to make the rubber pad in the middle of the side wall of the workpiece, then start cylinder 2 9 to make the two rubber pads clamp the workpiece, then contract the cylinder shaft of cylinder 1 7 to make the two rubber pads drive the workpiece to rise, then simultaneously start the two motors 10 at the ends of the cylinder shaft of cylinder 2 9, the two motors 10 will drive the workpiece to rotate, when the plane above the workpiece is parallel to the base 1, extend the cylinder shaft of cylinder 1 7 to make the workpiece inverted and firmly placed on the base 1, then shorten the cylinder shaft of cylinder 2 9 to make the two rubber pads not contact the workpiece, so that the bottom surface of the workpiece is at the top, so that the device can directly measure the bottom surface of the workpiece.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A three-dimensional coordinate measuring machine for conveniently turning over a workpiece, comprising a base (1), a gantry (2) that moves forward and backward on the base (1), a telescopic rod (3) that moves left and right on the gantry (2), and a probe (4) at the lower end of the telescopic rod (3) that can rotate horizontally and vertically; characterized in that: Rectangular holes (5) are respectively provided on the frame bodies on both sides of the gantry (2), and support platforms (6) are respectively provided on both sides of the frame body of the gantry (2) above the rectangular holes (5), and a cylinder one (7) is provided above the support platform (6), and the cylinder shaft of the cylinder one (7) passes through the support platform (6) and a moving box (8) is provided at the end thereof, and a cylinder two (9) whose cylinder shaft passes through the rectangular hole (5) is provided in the moving box (8), and a motor one (10) is provided at the end of the cylinder shaft of the cylinder two (9), and a rubber pad is provided at the end of the output shaft of the motor one (10).

2. A three-dimensional coordinate measuring machine that is convenient for turning over a workpiece according to claim 1, characterized in that: The outer side of the gantry (2) is provided with T-shaped grooves (11) on both sides of the rectangular hole (5), and the two sides of the moving box (8) are provided with T-shaped platforms (12) corresponding to the T-shaped grooves (11).

3. A three-dimensional coordinate measuring machine that is convenient for turning over a workpiece according to claim 1, characterized in that: When the cylinder axis of the cylinder one (7) is extended, the cylinder axis of the cylinder two (9) does not contact the lower end of the rectangular hole (5); when the cylinder axis of the cylinder one (7) is shortened, the cylinder axis of the cylinder two (9) does not contact the upper end of the rectangular hole (5).

4. A three-dimensional coordinate measuring machine that is convenient for turning over a workpiece according to claim 1, characterized in that: When the cylinder shafts of the two cylinders 2 (9) are extended, the rubber pads at the ends of the output shafts of the two motors 1 (10) located at the ends of the cylinder shafts of the two cylinders 2 (9) come into contact with each other.

5. The three-dimensional coordinate measuring machine for facilitating turning over of a workpiece according to claim 1, characterized in that: The output shafts of the two motors (10) located at the ends of the cylinder shafts of the cylinders (9) rotate in opposite directions.

6. The three-dimensional coordinate measuring machine for facilitating turning over of a workpiece according to claim 1, characterized in that: A slide groove (13) is provided on both sides of the base (1), and a rotating screw rod (14) is provided in the slide groove (13). A motor (15) is provided on one side of the base (1), and the motor (15) passes through the base (1) and is connected to the screw rod (14). The lower parts of the frames on both sides of the gantry (2) are located in the slide groove (13), and the screw rod (14) passes through the frames on both sides of the gantry (2).

7. The three-dimensional coordinate measuring machine for facilitating turning over of a workpiece according to claim 1, characterized in that: The lower part of the frame body of the upper part of the gantry (2) is provided with a second slide groove (16), and a guide rod (17) and a second rotating screw rod (18) are arranged in the second slide groove (16). The gantry (2) is provided with a motor (10) at one end of the second slide groove (16) for driving the second screw rod (18) to rotate, and an L-shaped connecting rod (19) is provided on one side of the telescopic rod (3), and the guide rod (17) and the second screw rod (18) pass through the connecting rod (19).

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