Clamping and positioning cushion block for roundness measuring instrument

Abstract

The utility model relates to the technical field of roundness measuring instruments, and discloses a roundness measuring instrument clamping and positioning cushion block which comprises a chuck and a base, the bottom of the chuck is fixedly connected with three supporting legs, the output end of a driving device is fixedly connected with a mounting seat, the top of the mounting seat is slidably connected with a cushion block, the interior of the mounting seat is fixedly connected with a mounting shell, and the mounting shell is fixedly connected with the base. The device comprises a mounting shell, two limiting blocks are fixedly connected to the interior of the mounting shell, two sliding blocks are slidably connected to the interior of the mounting shell, extrusion springs are fixedly connected between the two limiting blocks and the two sliding blocks, and pin rods are fixedly connected to the opposite sides of the two sliding blocks. In the utility model, the cushion block is made of a high-hardness material, the two ends of the cushion block are precisely machined to ensure the parallelism, and the diameter of the cushion block can be selected in various specifications. The design of the cushion block not only ensures that the reference of each measurement is consistent, improves the measurement precision and repeatability, remarkably reduces the risk of probe damage in the measurement process, and improves the overall safety of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of roundness meters, in particular to a clamping and positioning pad for a roundness meter. Background Art

[0002] Roundness meters are widely used in the field of precision machining to measure the roundness and cylindricity of cylindrical workpieces. Roundness meters usually adopt the radius measurement method, using a high-precision air-bearing spindle as the measurement reference, and cooperating with electrical components such as a computer, a precision circular grating, and an inductive displacement sensor to complete the measurement of angular displacement and radial displacement. A roundness meter is a high-precision measurement tool, and its usage method and operation steps need to be strictly followed to ensure the accuracy of the measurement results. With the continuous development of technology, modern roundness meters already have more automated and high-precision measurement functions, and can meet a wider range of industrial measurement requirements.

[0003] Although the original traditional three-jaw chuck fixture can basically meet the positioning requirements, when facing cylindrical workpieces with steps or special shapes, due to inconsistent positioning heights, the reproducibility and accuracy of the measurement results are reduced. Even in the case of improper operation, it may cause damage to the measurement probe, increasing the equipment maintenance cost. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a clamping and positioning pad for a roundness meter, aiming to improve the problems of insufficient positioning repeatability and safety of the roundness meter fixture in the measurement of complex workpieces in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A clamping and positioning pad for a roundness meter, comprising a chuck and a base. Three support legs are fixedly connected to the bottom of the chuck, and all three support legs are fixedly connected to the outside of the base. Connecting frames are fixedly connected between the three support legs, a driving device is fixedly connected between the three connecting frames, the output end of the driving device is fixedly connected with a mounting seat, a pad is slidably connected to the top of the mounting seat, a mounting shell is fixedly connected to the inside of the mounting seat, two limiting blocks are fixedly connected to the inside of the mounting shell, two sliders are slidably connected to the inside of the mounting shell, compression springs are fixedly connected between the two limiting blocks and the two sliders, a turntable is rotatably connected to the inside of the mounting shell, clamping blocks are fixedly connected to both sides of the turntable, pin rods are fixedly connected to the opposite sides of the two sliders, clamping holes are respectively opened on both sides of the bottom of the pad, and the two pin rods are engaged with the two clamping holes. An oil supply mechanism is arranged on the top of the base, and the oil supply mechanism is provided for injecting lubricating oil into the inside of the chuck.

[0006] As a further description of the above technical solution:

[0007] The oil delivery mechanism includes a fuel tank, the bottom of the fuel tank is fixedly connected to the top of the base, one side of the fuel tank is fixedly connected with a connecting pipe, the end of the connecting pipe away from the fuel tank is fixedly connected with a pump box, two return springs are fixedly connected inside the pump box, one side of the two return springs is fixedly connected with a piston, the side of the piston away from the return spring is fixedly connected with a push rod, the side of the pump box away from the fuel tank is fixedly connected with an oil delivery pipe, and the end of the oil delivery pipe away from the pump box is arranged on the top of the chuck.

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

[0009] Three slide rails are fixedly connected inside the chuck, and clamps are slidably connected to the tops of the three slide rails.

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

[0011] Shallow grooves are formed on the opposite sides of the two sliders, and deep grooves are formed on the opposite sides of the two sliders relative to the positions of the two shallow grooves.

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

[0013] A lever is fixedly connected to the outside of the turntable, and anti-slip patterns are arranged on the outside of the lever.

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

[0015] Anti-slip pads are arranged at the bottoms of the three support legs.

[0016] As a further description of the above technical solution:

[0017] A check valve one is fixedly connected to the end of the connecting pipe close to the fuel tank, and a check valve two is fixedly connected to the end of the oil delivery pipe close to the pump box.

[0018] As a further description of the above technical solution:

[0019] The piston is slidably connected inside the pump box, the end of the push rod away from the piston is fixedly connected with a handle, and an anti-slip sleeve is sleeved on the outside of the handle.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the pad is made of high-hardness material, and both ends are precisely processed to ensure parallelism, and the diameter has a variety of optional specifications to ensure stable and non-destructive clamping. The design of the pad not only ensures the consistency of the benchmark for each measurement, improves the measurement accuracy and repeatability, but also significantly reduces the risk of probe damage during the measurement process by reducing uncertainties in the clamping process, thereby improving the overall safety of the equipment. When the pad needs to be replaced and removed, the block is made to slide out of the shallow groove by turning the dial downward by toggling the lever. In the process of moving from the shallow groove to the deep groove, the two sliders gather relatively to drive the pin rod to compress the extrusion spring. The pin rod can be removed from the card hole to remove the pad. When installing the pad, release the lever and the two sliders are relatively separated under the action of the extrusion spring rebound, so that the card block slides back into the shallow groove, and the pin rod extends out of the installation shell again to engage with the card hole. The installation of the pad improves the measurement accuracy of the roundness meter, enhances the safety of equipment operation, and simplifies the operation process of the equipment.

[0022] 2. In the utility model, when it is necessary to inject lubricating oil into the chuck, the push rod is pushed by the handle so that the piston squeezes the return spring. The return spring is forced to rebound and push the piston back. The lubricating oil is pumped out from the oil tank and transported to the inside of the chuck through the oil pipe. The one-way valve 1 and the one-way valve 2 are opened at the same time to prevent the lubricating oil from flowing back, thereby achieving the effect of injecting oil into the chuck through the oil injection mechanism, avoiding the phenomenon of loose clamping caused by rust of the chuck due to long-term use, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the clamping and positioning pad of the roundness tester proposed by the utility model;

[0024] Figure 2 This is a cross-sectional view of the mounting seat for clamping the positioning pad of the roundness meter proposed by the utility model;

[0025] Figure 3 It is a cross-sectional view of the installation shell of the roundness instrument clamping positioning pad proposed by the utility model;

[0026] Figure 4 A schematic diagram of a slider for clamping a positioning pad of a roundness tester proposed by the utility model;

[0027] Figure 5 The utility model is a schematic diagram of the oil injection mechanism for clamping and positioning the roundness tester.

[0028] Legend:

[0029] 1. Chuck; 2. Base; 3. Support leg; 4. Connecting frame; 5. Driving device; 6. Mounting seat; 7. Slide rail; 8. Fixture; 9. Spacer block; 10. Card hole; 11. Mounting shell; 12. Limit block; 13. Slide block; 14. Extrusion spring; 15. Turntable; 16. Card block; 17. Pin rod; 18. Shallow groove; 19. Deep groove; 20. Lever; 21. Fuel tank; 22. Pump box; 23. Connecting pipe; 24. Return spring; 25. Piston; 26. Push rod; 27. Handle; 28. Oil delivery pipe; 29. Check valve I; 30. Check valve II. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Refer to Figure 1 - Figure 3 , an embodiment provided by the present invention: a roundness instrument clamping and positioning spacer block, including a chuck 1 and a base 2. The chuck 1 plays a role in fixing the clamping mechanism, and the base 2 plays a role in carrying the upper structure. Three support legs 3 are fixedly connected to the bottom of the chuck 1. The support legs 3 play a role in supporting the overall structure. The three support legs 3 are all fixedly connected to the outside of the base 2. Connecting frames 4 are fixedly connected between the three support legs 3. The connecting frames 4 play a role in connecting and installing. A driving device 5 is fixedly connected between the three connecting frames 4. The driving device 5 plays a role in providing power. The output end of the driving device 5 is fixedly connected to a mounting seat 6. The mounting seat 6 plays a role in mounting the spacer block 9. A spacer block 9 is slidably connected to the top of the mounting seat 6. An installation shell 11 is fixedly connected to the inside of the mounting seat 6. The installation shell 11 plays a role in fixing the internal structure. Two limit blocks 12 are fixedly connected to the inside of the installation shell 11. The limit blocks 12 play a role in preventing the internal structure from falling off. Two slide blocks 13 are slidably connected to the inside of the installation shell 11. The slide blocks 13 play a role in sliding. Extrusion springs 14 are fixedly connected between the two limit blocks 12 and the two slide blocks 13. The extrusion springs 14 play a role in providing elastic force. A turntable 15 is rotatably connected to the inside of the installation shell 11. The turntable 15 plays a role in rotational connection. Card blocks 16 are fixedly connected to both sides of the turntable 15. The card blocks 16 play a role in clamping and fixing. Pin rods 17 are fixedly connected to the opposite sides of the two slide blocks 13. The pin rods 17 play a role in clamping and fixing. Card holes 10 are opened on both sides of the bottom of the spacer block 9. The card holes 10 play a role in clamping and fixing. The two pin rods 17 are engaged with the two card holes 10. An oil delivery mechanism is arranged on the top of the base 2. The oil delivery mechanism is provided for injecting lubricating oil into the inside of the chuck 1.

[0032] Reference Figure 4 - Figure 5 The oil delivery mechanism includes an oil tank 21, which serves to store oil. The bottom of the oil tank 21 is fixedly connected to the top of the base 2. A connecting pipe 23 is fixedly connected to one side of the oil tank 21. The connecting pipe 23 serves to connect. The end of the connecting pipe 23 away from the oil tank 21 is fixedly connected to a pump box 22, which serves to pump oil. Two return springs 24 are fixedly connected to the inside of the pump box 22, which serve to provide elastic force. A piston 25 is fixedly connected to one side of the two return springs 24, which serves to pump oil. A push rod 26 is fixedly connected to the side of the piston 25 away from the return spring 24, which serves to push the piston 25. An oil delivery pipe 28 is fixedly connected to the side of the pump box 22 away from the oil tank 21, which serves to deliver oil. An end of the oil delivery pipe 28 away from the pump box 22 is arranged on the top of the chuck 1. The inside of the chuck 1 is fixedly connected with three slide rails 7, and the tops of the three slide rails 7 are slidably connected with clamps 8, which play a role of clamping. Shallow grooves 18 are provided on the opposite sides of the two sliders 13, and the shallow grooves 18 play a role of clamping and fixing. Deep grooves 19 are provided on the opposite sides of the two sliders 13 relative to the positions of the two shallow grooves 18, and the deep grooves 19 play a role of clamping and fixing. The outside of the turntable 15 is fixedly connected with a lever 20, and the outside of the lever 20 is provided with anti-skid patterns. The bottoms of the three supporting legs 3 are provided with anti-skid pads. One end of the connecting pipe 23 close to the oil tank 21 is fixedly connected with a one-way valve 29, and the one-way valve 29 plays a role of preventing oil reflux. One end of the oil delivery pipe 28 close to the pump box 22 is fixedly connected with a one-way valve 2 30, and the one-way valve 2 30 plays a role of preventing oil reflux. The piston 25 is slidably connected to the inside of the pump box 22, and the end of the push rod 26 away from the piston 25 is fixedly connected with a handle 27, and the outer sleeve of the handle 27 is provided with an anti-skid sleeve.

[0033] Working principle: when the pad block 9 needs to be replaced or removed, the lever 20 is pushed downward to rotate the turntable 15 so that the block 16 slides out of the shallow groove 18. In the process of the shallow groove 18 moving to the deep groove 19, the two sliders 13 gather together to drive the pin rod 17 to compress the extrusion spring 14. The pin rod 17 is disengaged from the card hole 10 to remove the pad block 9. When installing the pad block 9, the lever 20 is released and the two sliders 13 are relatively separated under the action of the rebound of the extrusion spring 14, so that the block 16 slides back into the shallow groove 18, and the pin rod 17 is extended from the installation shell 11 again to engage with the card hole 10.

[0034] When it is necessary to inject lubricating oil into the chuck 1, the push rod 26 is pushed by the handle 27 so that the piston 25 squeezes the return spring 24. The return spring 24 rebounds under the force and pushes the piston 25 back. The lubricating oil is drawn out from the oil tank 21 and transported to the inside of the chuck 1 through the oil pipe 28. The one-way valve 1 29 and the one-way valve 2 30 are opened at the same time to prevent the lubricating oil from flowing back.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A roundness tester clamping and positioning pad comprises a chuck (1) and a base (2), characterized in that: The bottom of the chuck (1) is fixedly connected to three supporting legs (3), the three supporting legs (3) are all fixedly connected to the outside of the base (2), the three supporting legs (3) are all fixedly connected to a connecting frame (4), the three connecting frames (4) are fixedly connected to a driving device (5), the output end of the driving device (5) is fixedly connected to a mounting seat (6), the top of the mounting seat (6) is slidably connected to a cushion block (9), the interior of the mounting seat (6) is fixedly connected to a mounting shell (11), the interior of the mounting shell (11) is fixedly connected to two limit blocks (12), the interior of the mounting shell (11) is slidably connected to two A slider (13), a compression spring (14) is fixedly connected between the two limit blocks (12) and the two sliders (13), a turntable (15) is rotatably connected inside the mounting shell (11), and clamping blocks (16) are fixedly connected on both sides of the turntable (15), and pins (17) are fixedly connected on opposite sides of the two sliders (13), clamping holes (10) are provided on both sides of the bottom of the cushion block (9), and the two pins (17) are engaged with the two clamping holes (10), and an oil delivery mechanism is provided on the top of the base (2), and the oil delivery mechanism is provided for injecting lubricating oil into the interior of the chuck (1).

2. The roundness tester clamping and positioning pad according to claim 1, characterized in that: The oil delivery mechanism comprises an oil tank (21), the bottom of the oil tank (21) is fixedly connected to the top of the base (2), one side of the oil tank (21) is fixedly connected to a connecting pipe (23), one end of the connecting pipe (23) away from the oil tank (21) is fixedly connected to a pump box (22), two return springs (24) are fixedly connected inside the pump box (22), one side of the two return springs (24) is fixedly connected to a piston (25), one side of the piston (25) away from the return spring (24) is fixedly connected to a push rod (26), the side of the pump box (22) away from the oil tank (21) is fixedly connected to an oil delivery pipe (28), and one end of the oil delivery pipe (28) away from the pump box (22) is arranged on the top of the chuck (1).

3. The roundness tester clamping and positioning pad according to claim 1, characterized in that: Three slide rails (7) are fixedly connected inside the clamping plate (1), and the tops of the three slide rails (7) are all slidably connected to clamps (8).

4. The roundness tester clamping and positioning pad according to claim 1, characterized in that: Shallow grooves (18) are provided on opposite sides of the two sliders (13), and deep grooves (19) are provided on opposite sides of the two sliders (13) at positions relative to the two shallow grooves (18).

5. The roundness tester clamping and positioning pad according to claim 1, characterized in that: The outside of the rotating disk (15) is fixedly connected to a lever (20), and the outside of the lever (20) is provided with anti-slip grooves.

6. The roundness tester clamping and positioning pad according to claim 1, characterized in that: The bottoms of the three supporting legs (3) are all provided with anti-slip pads.

7. The roundness tester clamping and positioning pad according to claim 2, characterized in that: One end of the connecting pipe (23) close to the oil tank (21) is fixedly connected to a one-way valve (29), and one end of the oil delivery pipe (28) close to the pump box (22) is fixedly connected to a one-way valve (30).

8. The roundness tester clamping and positioning pad according to claim 2, characterized in that: The piston (25) is slidably connected to the inside of the pump box (22); one end of the push rod (26) away from the piston (25) is fixedly connected to a handle (27); and the outside of the handle (27) is provided with an anti-slip cover.

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