Plug gauge capable of measuring shaft run-out

Abstract

The utility model relates to and discloses a plug gauge capable of measuring shaft run-out, which comprises a round block and more than three clamping rods, more than three guide rod frames are fixedly arranged on the periphery of the round block in the radial direction, and the plurality of clamping rods are parallel to one another and are respectively arranged on the plurality of guide rod frames in a sliding manner; according to the plug gauge capable of measuring the shaft run-out, the circular block and the base plate are separated from each other or close to each other, and a series of synchronous transmission of the three right-angle plates, the three first sliding seats, the three connecting rods and the three second sliding seats drive the three clamping rods to synchronously contract or expand, so that bearing inner rings or bearing outer rings of different sizes can be clamped; the center axis of the clamped bearing and the center axis of the base plate coincide with each other, then the outer diameter or the inner diameter of the clamped bearing is detected through the linear displacement sensor, and the numerical value of the outer diameter or the inner diameter of the clamped bearing is displayed through the pointer and the two micrometer scales. Therefore, whether the outer diameter or the inner diameter of the bearing is within the tolerance range is judged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and particularly relates to a plug gauge capable of measuring shaft runout. Background Art

[0002] In the bearing processing of mechanical equipment such as wind turbines, servo motors, and automobile wheels, in order to ensure the quality of the processed bearings and prevent shaft runout caused by bearing size reasons, it is necessary to detect the processed bearings to check whether the inner and outer diameter errors of the bearings are within their tolerance ranges; the inner diameter of the bearing is usually measured by a plug gauge to determine whether the error is within its tolerance range and whether shaft runout will occur. A plug gauge is a precision measuring tool used to measure internal dimensions such as holes and grooves of workpieces.

[0003] However, the general plug gauge has a simple structure and is usually composed of two cylinders with specific sizes. It can only measure the inner diameter of bearings with the same aperture and cannot measure bearings with multiple different sizes. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that the plug gauge has a simple structure, is usually composed of two cylinders with specific sizes, can only measure the inner diameter of bearings with the same aperture, and cannot measure bearings with multiple different sizes, and to propose a plug gauge capable of measuring shaft runout.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A plug gauge capable of measuring shaft runout, comprising:

[0007] A round block, on which more than three guide rod frames are fixedly installed in the radial direction of the periphery;

[0008] More than three clamping rods, a plurality of the clamping rods are parallel to each other and are respectively slidably installed on a plurality of the guide rod frames. Through the output and transmission of a power source and a synchronous transmission mechanism, the plurality of clamping rods are synchronously driven to contract or expand along the plurality of guide rod frames.

[0009] Preferably, a guide groove is provided on the guide rod frame, and the first end of the clamping rod is slidably installed in the guide groove through a second sliding seat.

[0010] Preferably, the synchronous transmission mechanism includes more than three right-angle plates and more than three first sliding seats. A plurality of the right-angle plates are respectively arranged on the left side of a plurality of the guide rod frames, and a plurality of the first sliding seats are respectively slidably installed on the hypotenuses of a plurality of the right-angle plates. A connecting rod is fixedly installed between each first sliding seat and the second sliding seat on the right side.

[0011] Preferably, guiding holes are provided at the hypotenuse of several of the right-angled plates, and two rollers are rotatably mounted on each of the first sliding seats. The two rollers on the same first sliding seat are rollingly mounted in the guiding holes.

[0012] Preferably, a pointer is fixedly mounted on one of the second sliding seats. The two ends of the pointer are disposed outside the guiding rod frame connected thereto. Thousandth scales are provided at the two ends of the pointer, and the thousandth scales are disposed on the guiding rod frame.

[0013] Preferably, several of the right-angled plates are fixedly connected by a chassis, and a linear displacement sensor is fixedly mounted on another second sliding seat. The detection probe in the linear displacement sensor is fixedly connected to the second sliding seat in the above-mentioned second sliding seat.

[0014] Compared with the prior art, the present utility model provides a plug gauge capable of measuring shaft runout, having the following

[0015] beneficial effects:

[0016] For the plug gauge capable of measuring shaft runout, by moving the round block and the chassis away from or close to each other, and through a series of synchronous transmissions of three right-angled plates, three first sliding seats, three connecting rods and three second sliding seats, the three clamping rods are driven to contract or expand synchronously, so as to clamp the inner ring or outer ring of bearings with different sizes, and the central axis of the clamped bearing coincides with the central axis of the chassis. Then, the linear displacement sensor detects the outer diameter or inner diameter of the clamped bearing, and the outer diameter or inner diameter value of the clamped bearing is displayed by the pointer and two thousandth scales, so as to judge whether the outer diameter or inner diameter of the bearing is within its tolerance range;

[0017] Briefly speaking, the present application can not only measure the inner diameter of various bearings with different sizes, but also measure the outer diameter of various bearings with different sizes, assist in judging whether shaft runout will occur after the bearing is installed, and can also be used to measure whether the inner hole diameter or outer diameter of other workpieces is within its tolerance range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of a plug gauge capable of measuring shaft runout proposed by the present utility model;

[0019] Figure 2 is a side view of a plug gauge capable of measuring shaft runout proposed by the present utility model;

[0020] Figure 3 is a schematic structural view of a plug gauge capable of measuring shaft runout proposed by the present utility model Figure 2 .

[0021] In the figure: 1. Chassis; 2. Right-angle plate; 3. Guide hole; 4. First sliding seat; 5. Connecting rod; 6. Guide rod frame; 7. Second sliding seat; 8. Clamping rod; 9. Linear displacement sensor; 10. Roller; 11. Micrometer scale; 12. Round block; 13. Guide rod; 14. Pointer. Specific implementation mode

[0022] 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.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] Referring to the attached Figures 1-3 , a plug gauge capable of measuring the runout of a shaft, including a synchronous transmission mechanism. The synchronous transmission mechanism includes a chassis 1, three right-angle plates 2 and three first sliding seats 4. The chassis 1 is integrally in a disc shape, and the chassis 1 is fixedly connected to the three right-angle plates 2. The three right-angle plates 2 are arranged in a circular surrounding manner with the central axis of the chassis 1 as the center of the circle. The hypotenuses of the three right-angle plates 2 are all arranged outward. Guide holes 3 are provided near the hypotenuses of the three right-angle plates 2. The guide holes 3 are parallel to the hypotenuses of the right-angle plates 2. Two rollers 10 are linearly and rotatably installed in each of the three guide holes 3. Each first sliding seat 4 is slidably installed in the three guide holes 3 through the two rollers 10. The first sliding seat 4 is rotatably connected to the rollers 10. According to the fact that two points determine a straight line, the first sliding seat 4 can reciprocally slide along the hypotenuse of the right-angle plate 2 through the two rollers 10.

[0025] In this embodiment, a connecting rod 5 is fixedly installed on the right side of the first sliding seat 4. A second sliding seat 7 is fixedly installed on the right side of the connecting rod 5. Guide rod frames 6 are provided directly to the right of the three right-angle plates 2. Guide grooves are provided on the guide rod frames 6. The second sliding seat 7 is slidably installed in the guide grooves of the guide rod frames 6, mainly used to shorten the compression stroke between the round block 12 and the chassis 1. A clamping rod 8 is fixedly installed on the right side of the second sliding seat 7. The three clamping rods 8 are parallel to each other. The distances from the three clamping rods 8 to the central axis of the chassis 1 are the same. And using the fact that three points not on the same straight line can determine a circle, it is used to coaxially clamp the outer or inner rings of circular workpieces such as cylinders and bearings.

[0026] In this embodiment, a round block 12 is fixedly installed between the first ends of the three guide rod frames 6, and the three guide rod frames 6 are respectively arranged in the radial direction of the round block 12. In this application, the length of the right-angle side a of the right-angle plate 2 is twice the length of the right-angle side b. That is, by horizontally moving the round block 12 one centimeter closer to the chassis 1, the slide block one 4 and the slide block two 7 will move upward by two centimeters. One side of the round block 12 is telescopically and slidably connected to the chassis 1 through a guide rod 13. The guide rod 13 is fixedly connected to the round block 12, and the guide rod 13 is telescopically and slidably installed on the chassis 1. When the round block 12 and the chassis 1 approach each other, the guide holes 3 in the three right-angle plates 2 will simultaneously push the three slide blocks one 4 to expand outward, so that the three slide blocks two 7 on the right sides of the three slide blocks one 4 will simultaneously expand outward along the guide grooves of the three guide rod frames 6, thereby expanding the three clamping rods 8. That is, this application can clamp and measure round workpieces such as cylinders and bearings within a certain size range.

[0027] It should be noted that in this application, through the output and transmission of the power source and the synchronous transmission mechanism, it is used to synchronously drive a plurality of clamping rods 8 to contract or expand along a plurality of guide rod frames 6. The power source in this application is mainly driven manually or composed of a hydraulic cylinder. The size of this application is specifically set according to the sizes of cylinders and bearings in the prior art. For some large bearings and large cylinder shells used in wind turbines, etc., the size of this application will also become larger. Therefore, it is relatively laborious to manually press the round block 12 and the chassis 1 to approach each other. The hydraulic cylinder can be used to replace the above-mentioned guide rod 13 to drive the round block 12 and the chassis 1 to move away or approach automatically.

[0028] In this embodiment, on both sides of one end face of a guide rod frame 6, a micrometer scale 11 is respectively arranged. The micrometer scale 11 on the left is used to display the diameter value of the outer ring of the clamped bearing, and the micrometer scale 11 on the right is used to display the diameter value of the inner ring of the clamped bearing. A pointer 14 is fixedly installed on the slide block two 7 in the guide rod frame 6, and both ends of the pointer 14 horizontally point to the two micrometer scales 11 on both sides respectively;

[0029] On another guide rod frame 6, a linear displacement sensor 9 is fixedly installed. The detection probe in the linear displacement sensor 9 is fixedly connected to the slide block two 7 in the guide rod frame 6. A storage battery is fixedly installed on the chassis 1, and the storage battery is connected to the linear displacement sensor 9 through a wire. In this application, the inner diameter or outer diameter of the clamped round workpiece can also be measured through the linear displacement sensor 9.

[0030] In this utility model, by moving the round block 12 and the chassis 1 away from or close to each other, and through a series of transmissions of the three right-angle plates 2, the three slide blocks one 4 and the three connecting rods 5, it is used to synchronously drive the three slide blocks two 7 to contract or expand outward along the three guide rod frames 6, so that the three clamping rods 8 can clamp the inner rings or outer rings of bearings with different sizes;

[0031] Moreover, the central axes of the bearings clamped by the above three clamping rods 8 coincide with the central axis of the chassis 1, that is, the perpendicular linear distance from the contact point between the clamping rod 8 and the bearing to the central axis of the chassis 1 is the outer diameter or inner diameter of the bearing. The outer diameter or inner diameter of the clamped bearing is detected by the linear displacement sensor 9, and the outer diameter or inner diameter value of the clamped bearing is displayed by the pointer 14 and the two micrometer scales 11, so as to judge whether the outer diameter or inner diameter of the bearing is within its tolerance range;

[0032] Briefly speaking, the present application can measure the inner diameters of a variety of bearings with different sizes and the inner cylinders of the outer rings of the installed bearings, and is used to judge whether the inner diameter of the bearing and the inner diameter of the inner cylinder of the outer ring of the installed bearing are within their tolerance ranges. According to the synchronous telescopic property of the three clamping rods 8 in the present application, the outer diameters of the outer ring of the bearing to be clamped and the transmission shaft of the inner ring of the bearing can also be clamped and detected to judge whether they are within their tolerance ranges. If the results of the detected values of the inner and outer ring diameters of the above bearings are not within the tolerance ranges, there may be a shaft jumping problem due to the bearing size problem.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A plug gauge for measuring the runout of a shaft, characterized in that, Comprising: A circular block (12), with more than three guide rod brackets (6) fixedly installed radially on the periphery of the circular block (12); More than three clamping rods (8), a plurality of the clamping rods (8) being parallel to each other and respectively slidably installed on a plurality of the guide rod brackets (6). Through the output and transmission of a power source and a synchronous transmission mechanism, the present application is used to synchronously drive a plurality of the clamping rods (8) to contract or expand along a plurality of the guide rod brackets (6).

2. A plug gauge capable of measuring the runout of a shaft according to claim 1, characterized in that: A guide groove is provided on the guide rod bracket (6), and the first end of the clamping rod (8) is slidably installed in the guide groove through a second sliding seat (7).

3. A plug gauge capable of measuring the shaft runout according to claim 2, characterized in that: The synchronous transmission mechanism includes more than three right-angle plates (2) and more than three first sliding seats (4). A plurality of the right-angle plates (2) are respectively arranged on the directly left side of a plurality of the guide rod brackets (6), and a plurality of the first sliding seats (4) are respectively slidably installed on the hypotenuses of a plurality of the right-angle plates (2). A connecting rod (5) is fixedly installed between each first sliding seat (4) and the second sliding seat (7) on its directly right side.

4. A plug gauge capable of measuring the runout of a shaft according to claim 3, characterized in that: Guide holes (3) are provided at the hypotenuse of each of the plurality of right-angle plates (2), and two rollers (10) are rotatably installed on each first sliding seat (4). The two rollers (10) on the same first sliding seat (4) are rollingly installed in the guide holes (3).

5. A plug gauge capable of measuring the shaft runout according to claim 2, characterized in that: A pointer (14) is fixedly installed on one second sliding seat (7). The two ends of the pointer (14) are arranged outside the guide rod bracket (6) to which it is connected. Vernier scales (11) are provided at both ends of the pointer (14), and the vernier scales (11) are arranged on the guide rod bracket (6).

6. A plug gauge capable of measuring the runout of a shaft according to claim 3, characterized in that: The plurality of right-angle plates (2) are fixedly connected through a chassis (1). A linear displacement sensor (9) is fixedly installed on another second sliding seat (7), and the detection probe in the linear displacement sensor (9) is fixedly connected to the second sliding seat (7) in the above-mentioned second sliding seat (7).

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