Automatic measuring head of rapid cylindricity instrument

Abstract

The utility model discloses an automatic measuring head of a rapid cylindricity instrument, which relates to the technical field of rapid cylindricity instruments and comprises a measuring head body, a mounting seat is fixedly mounted on the outer wall of the measuring head body, a protection mechanism is arranged on the outer wall of the mounting seat, and limiting mechanisms are arranged at two ends of the protection mechanism. The protection mechanism comprises a guide seat, a square frame is arranged at the lower end of the guide seat, guide holes are formed in the two sides of the square frame in a penetrating mode, blocking plates are slidably installed in the two guide holes, three long rods are arranged at the upper end of the guide seat, and concave plates are fixedly installed at the upper ends of the three long rods. According to the utility model, the measuring head body can be protected and sealed, dust particles are prevented from being attached to the measuring head body, a measuring system is ensured not to generate system errors, and the accuracy of a measuring result is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of rapid cylindricity measuring instruments, and in particular to an automated measuring head for rapid cylindricity measuring instruments. Background Technology

[0002] A cylindricity measuring instrument, also known as a cylindricity meter, is a rotary table-type cylindricity measuring instrument that uses a precision air-bearing spindle and a high-precision column guide rail as a reference and employs a computer measurement system. It is mainly used to measure parameters such as roundness, cylindricity, waviness, coaxiality, concentricity, perpendicularity, parallelism, and straightness of rotating workpieces such as rings and cylinders. The automated measuring head is equipped with a multi-degree-of-freedom motion mechanism, which can move in the X, Y, and Z axes and rotate around the axes. It can flexibly adjust the position and angle of the measuring head to meet the measurement needs of cylindrical workpieces of different sizes and shapes.

[0003] However, in the existing technology, when the rapid cylindricity measuring instrument is not in use, the measuring head is often exposed. During this time, dust particles fall into the surface of the measuring head. The dust particles adhere to the measuring head and change the contact state between the measuring head and the workpiece surface or the optical measurement path. During measurement, this will cause the displacement sensor of the measuring head to deviate, resulting in systematic errors in the measurement system and affecting the accuracy of the measurement results. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that causes deviations in the displacement sensor readings of the probe, resulting in systematic errors in the measurement system and affecting the accuracy of the measurement results. The invention proposes an automated measuring head for a rapid cylindricity tester.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automated measuring head for a rapid cylindricity tester, comprising a measuring head body, a mounting base fixedly installed on the outer wall of the measuring head body, a protective mechanism provided on the outer wall of the mounting base, and limit mechanisms provided at both ends of the protective mechanism;

[0006] The protective mechanism includes a guide seat, a square frame at the lower end of the guide seat, guide holes through both sides of the square frame, a baffle plate slidably installed inside each of the two sets of guide holes, three sets of long rods at the upper end of the guide seat, a concave plate fixedly installed at the upper end of the three sets of long rods, a square groove at the lower end of the guide seat, and three sets of round holes through the upper end of the guide seat.

[0007] Preferably, the limiting mechanism includes two sets of storage boxes, each set of storage boxes has a pull rod at its lower end, each set of pull rods has a support plate fixedly installed at its lower end, each set of pull rods has a circular plate at its upper end, and each set of circular plates has a support spring at its lower end.

[0008] Preferably, a magnetic strip is installed through one side of both sets of the baffles, and the upper part of the frame is inserted into the inside of the square groove.

[0009] Preferably, the lower ends of the three sets of long rods pass through the interior of the three sets of circular holes and are fixed to the upper end of the square frame.

[0010] Preferably, the guide seat is fitted onto the outer wall of the mounting base, and the inner wall of the guide seat is fixed to the outer wall of the mounting base.

[0011] Preferably, the upper ends of the two sets of pull rods pass through the lower ends of the two sets of storage boxes respectively, and are fixed to the lower ends of the two sets of circular plates respectively, and the two sets of circular plates are slidably installed inside the two sets of storage boxes respectively.

[0012] Preferably, one end of each of the two sets of storage boxes is fixed to both ends of the guide seat, and the lower ends of each of the two sets of support springs are fixed to the bottom of the storage box.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting up a protective mechanism, when the frame moves downward a distance, it can push the two sets of blocking plates to slide inside the two sets of guide holes until the two sets of blocking plates come into contact, thereby completely wrapping the measuring head body, thus protecting and sealing the measuring head body, preventing dust particles from adhering to the measuring head body, ensuring that the measuring system will not produce systematic errors, and will not affect the accuracy of the measurement results.

[0015] 2. In this utility model, by setting a limiting mechanism, under the elastic force of the supporting spring, the supporting spring will push the circular plate to move upward inside the storage box, and the circular plate will drive the supporting plate to move upward together through the pull rod until the supporting plate contacts the lower end of the square frame. Then, the same operation is performed on the other supporting plate, so that the two sets of supporting plates can support the square frame, thereby preventing the square frame from falling downward during use and preventing it from affecting the operation of the measuring head body. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the automated measuring head for a rapid cylindricity tester is provided for this utility model.

[0017] Figure 2 A bottom view of the protective mechanism and the limiting mechanism in the automated measuring head of the rapid cylindricity tester proposed in this utility model;

[0018] Figure 3 An exploded view of the protective mechanism of the automated measuring head of the rapid cylindricity tester proposed in this utility model.

[0019] Figure 4 This invention presents an exploded view of the limiting mechanism of the automated measuring head of a rapid cylindricity tester.

[0020] Legend: 1. Measuring head body; 11. Mounting base; 2. Protective mechanism; 21. Guide seat; 22. Guide hole; 23. Square frame; 24. Blocking plate; 25. Long rod; 26. Concave plate; 27. Magnet strip; 28. Square groove; 29. ​​Round hole; 3. Limiting mechanism; 31. Storage box; 32. Pull rod; 33. Support plate; 34. Round plate; 35. Support spring. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides an automated measuring head for a rapid cylindricity tester, including a measuring head body 1, a mounting base 11 fixedly mounted on the outer wall of the measuring head body 1, a protective mechanism 2 provided on the outer wall of the mounting base 11, and limit mechanisms 3 provided at both ends of the protective mechanism 2.

[0024] The protective mechanism 2 includes a guide seat 21. A square frame 23 is provided at the lower end of the guide seat 21. Guide holes 22 are provided through both sides of the square frame 23. A baffle plate 24 is slidably installed inside the two sets of guide holes 22. Three sets of long rods 25 are provided at the upper end of the guide seat 21. A concave plate 26 is fixedly installed at the upper end of the three sets of long rods 25. A square groove 28 is provided at the lower end of the guide seat 21. Three sets of round holes 29 are provided through the upper end of the guide seat 21. A magnet strip 27 is installed through one side of each of the two sets of baffle plates 24. The upper part of the square frame 23 is inserted into the square groove 28. The lower ends of the three sets of long rods 25 pass through the three sets of round holes 29 and are fixed to the upper end of the square frame 23. The guide seat 21 is fitted onto the outer wall of the mounting base 11. The inner wall of the guide seat 21 is fixed to the outer wall of the mounting base 11.

[0025] The specific settings and functions of this embodiment are described below. Under the action of gravity, the two sets of baffles 24 will drive the square frame 23 to move downward, so that the square frame 23 slides downward inside the square groove 28. At the same time, the square frame 23 will drive the three sets of long rods 25 to move inside the three sets of round holes 29. The three sets of long rods 25 will drive the concave plate 26 to move until the lower end of the concave plate 26 contacts the upper end of the guide seat 21. Then, the two sets of baffles 24 will be pushed to move, so that the two sets of baffles 24 slide inside the two sets of guide holes 22 respectively, until the two sets of baffles 24 contact each other. This can completely wrap the measuring head body 1, thereby protecting and sealing the measuring head body 1, preventing dust particles from adhering to the measuring head body 1, ensuring that the measuring system will not produce systematic errors, and will not affect the accuracy of the measurement results.

[0026] With the cooperation of the two sets of magnet strips 27, when the two sets of baffle plates 24 come into contact with each other, the two sets of magnet strips 27 will attract each other and can fix the two sets of baffle plates 24.

[0027] The concave plate 26 serves as a blocking effect, preventing the square frame 23 from falling out of the square groove 28 under the influence of gravity.

[0028] Example 2: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the limiting mechanism 3 includes two sets of storage boxes 31. Each set of storage boxes 31 has a pull rod 32 at its lower end. Each set of pull rods 32 has a support plate 33 fixedly installed at its lower end. Each set of pull rods 32 has a circular plate 34 at its upper end. Each set of circular plates 34 has a support spring 35 at its lower end. The upper ends of the two sets of pull rods 32 pass through the lower ends of the two sets of storage boxes 31 and are fixed to the lower ends of the two sets of circular plates 34. The two sets of circular plates 34 are slidably installed inside the two sets of storage boxes 31. One end of each set of storage boxes 31 is fixed to both ends of the guide seat 21. The lower ends of the two sets of support springs 35 are fixed to the bottom of the inside of each storage box 31.

[0029] The overall effect of this embodiment is that by operating the two sets of support plates 33 one by one, first pulling one of the support plates 33 downward, then rotating the support plate 33, the support plate 33 drives the circular plate 34 to rotate through the pull rod 32, so that the circular plate 34 rotates inside the storage box 31, and one end of the support plate 33 moves to the bottom of the square frame 23. Then, the support plate 33 is released, and under the elastic force of the support spring 35, the support spring 35 pushes the circular plate 34 to move upward inside the storage box 31, and the circular plate 34 drives the support plate 33 to move upward together through the pull rod 32 until the support plate 33 contacts the bottom of the square frame 23. Then, the same operation is performed on the other support plate 33, so that the two sets of support plates 33 can support the square frame 23, thereby preventing the square frame 23 from falling downward during use and preventing it from affecting the operation of the measuring head body 1.

[0030] The usage and working principle of this device are as follows: First, install the measuring head body 1 onto a suitable automated cylindrical measuring instrument. When the measuring head body 1 is not in use, move the two sets of support plates 33 one by one by rotating them. Both sets of support plates 33 will move away from the lower end of the frame 23. At this time, under the action of gravity, the two sets of blocking plates 24 will drive the frame 23 to move downward, so that the frame 23 slides downward inside the square groove 28. At the same time, the frame 23 will drive the three sets of long rods 25 to move inside the three sets of round holes 29. The three sets of long rods 25 will drive the concave plate 26 to move until the lower end of the concave plate 26 contacts the upper end of the guide seat 21. Then push the two sets of blocking plates 24 to move, so that the two sets of blocking plates 24 slide inside the two sets of guide holes 22 respectively, until the two sets of blocking plates 24 contact each other. This can completely wrap the measuring head body 1, protect and seal the measuring head body 1, and prevent dust particles from adhering to the measuring head body 1.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. An automated measuring head for a rapid cylindricity tester, comprising a measuring head body (1), characterized in that: The outer wall of the measuring head body (1) is fixedly installed with a mounting base (11), and the outer wall of the mounting base (11) is provided with a protective mechanism (2), and the two ends of the protective mechanism (2) are provided with limit mechanisms (3). The protective mechanism (2) includes a guide seat (21), a square frame (23) is provided at the lower end of the guide seat (21), and guide holes (22) are provided through both sides of the square frame (23). A baffle plate (24) is slidably installed inside the two sets of guide holes (22). Three sets of long rods (25) are provided at the upper end of the guide seat (21), and a concave plate (26) is fixedly installed at the upper end of the three sets of long rods (25). A square groove (28) is provided at the lower end of the guide seat (21), and three sets of round holes (29) are provided through the upper end of the guide seat (21).

2. The automated measuring head of the rapid cylindricity tester according to claim 1, characterized in that: The limiting mechanism (3) includes two sets of storage boxes (31). Each set of storage boxes (31) has a pull rod (32) at its lower end. Each set of pull rods (32) has a support plate (33) fixedly installed at its lower end. Each set of pull rods (32) has a circular plate (34) at its upper end. Each set of circular plates (34) has a support spring (35) at its lower end.

3. The automated measuring head of the rapid cylindricity tester according to claim 1, characterized in that: Magnet strips (27) are installed through one side of both sets of the baffles (24), and the upper part of the frame (23) is inserted into the inside of the square groove (28).

4. The automated measuring head of the rapid cylindricity tester according to claim 3, characterized in that: The lower ends of the three sets of long rods (25) pass through the interior of the three sets of round holes (29) respectively, and are fixed to the upper end of the square frame (23) respectively.

5. The automated measuring head of the rapid cylindricity tester according to claim 4, characterized in that: The guide seat (21) is fitted onto the outer wall of the mounting seat (11), and the inner wall of the guide seat (21) is fixed to the outer wall of the mounting seat (11).

6. The automated measuring head of the rapid cylindricity tester according to claim 2, characterized in that: The upper ends of the two sets of pull rods (32) pass through the lower ends of the two sets of storage boxes (31) respectively, and are fixed to the lower ends of the two sets of circular plates (34) respectively. The two sets of circular plates (34) are slidably installed inside the two sets of storage boxes (31).

7. The automated measuring head of the rapid cylindricity tester according to claim 6, characterized in that: One end of each of the two sets of storage boxes (31) is fixed to both ends of the guide seat (21), and the lower ends of the two sets of support springs (35) are fixed to the bottom of the inside of the storage box (31).

Images