Object inner diameter measuring device

Abstract

The utility model relates to the technical field of measurement, and discloses an object inner diameter measuring device, which comprises a base, a measuring mechanism and a clamping and rotating mechanism, and is characterized in that the measuring mechanism is mounted on the base and is used for measuring the inner diameter of a measured object; the clamping and rotating mechanism comprises a driving part, a rotating disc and a clamp, the driving part is installed on the base and connected with the rotating disc, and the driving part is used for driving the rotating disc to rotate; the clamp is installed on the rotating disc, the clamping center of the clamp is located on the rotating center line of the rotating disc, the clamp and the measuring mechanism are oppositely arranged in a spaced mode in the first direction, and the connecting line of the clamping center of the clamp and the measuring center of the measuring mechanism is parallel to the first direction. According to the utility model, a plurality of measurement data can be conveniently obtained, the measurement efficiency is improved, and personal errors caused by measurement position deviation are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a device for measuring the inner diameter of an object. Background Art

[0002] In the production of bottle-shaped products, it is necessary to measure the inner diameter of the production mold and the produced bottle-shaped products to detect the deviation of the inner diameter of the product and ensure the product quality. At present, the inner diameter of the product is usually measured manually using the existing inner diameter caliper, and a single measurement data is obtained by measuring one position each time. In order to obtain more measurement data samples to analyze the deviation of the inner diameter of the product, it is necessary to measure different positions of the inner mouth of the product multiple times. The measurement efficiency is low, and the measurement position is different each time, which is easy to cause large human errors. Utility Model Content

[0003] The utility model aims to provide a device for measuring the inner diameter of an object, so as to obtain more measurement data samples, improve the measurement efficiency and reduce human errors.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The object inner diameter measuring device of the utility model has a first direction, including:

[0006] Base;

[0007] a measuring mechanism, mounted on the base, the measuring mechanism being used to measure an inner diameter; and

[0008] The clamping and rotating mechanism comprises a driving member, a rotating disk and a clamp, wherein the driving member is mounted on the base and connected to the rotating disk, and the driving member is used to drive the rotating disk to rotate; the clamp is mounted on the rotating disk and the clamping center of the clamp is located on the rotation center line of the rotating disk;

[0009] The clamp and the measuring mechanism are arranged relatively spaced apart along the first direction, and a line connecting a clamping center of the clamp and a measuring center of the measuring mechanism is parallel to the first direction.

[0010] Preferably, the measuring mechanism comprises:

[0011] A measuring fixed arm is installed on the base;

[0012] A measuring movable arm, one end of which is a measuring end, the other end of which is an operating end, and the middle portion of which is hinged to the middle portion of the measuring fixed arm;

[0013] An elastic member, connecting the measuring fixed arm and the measuring movable arm;

[0014] The indicator meter is installed on the measuring fixed arm.

[0015] Preferably, the indicator meter has a dial and a pointer rotatably mounted on the dial;

[0016] The measuring mechanism further comprises a transmission assembly mounted on the measuring arm and close to the operating end, wherein the transmission assembly is connected to the pointer to drive the pointer to rotate when the measuring arm moves.

[0017] Preferably, the measuring mechanism further comprises an encoder installed at the bottom of the indicator, and the encoder is connected to the pointer.

[0018] Preferably, the measuring mechanism further comprises a sliding ball rotatably mounted on the measuring end of the measuring movable arm, and the sliding ball is located on a side of the measuring movable arm away from the measuring fixed arm.

[0019] Preferably, the clamp includes a plurality of grippers and a plurality of gripper fasteners, and the plurality of grippers are installed on the rotating disk at equal intervals along the circumferential direction of the rotating disk, and each of the grippers has a corresponding gripper fastener, and the gripper fastener is installed on the outer edge of the rotating disk, and the gripper fastener is used to adjust the corresponding gripper to loosen or tighten.

[0020] Preferably, each of the grippers is provided with a stepped gripping platform.

[0021] Preferably, the object inner diameter measuring device further comprises an adjusting mechanism, which is mounted on the base, and the adjusting mechanism is connected to the measuring mechanism, and the adjusting mechanism is used to adjust the position of the measuring center of the measuring mechanism.

[0022] Preferably, the object inner diameter measuring device also has a second direction and a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the adjustment mechanism includes a first adjustment component, a second adjustment component and a third adjustment component, the first adjustment component is installed on the base, and the first adjustment component is used to adjust the position of the measurement center in the first direction; the second adjustment component is installed on the first adjustment component, and the second adjustment component is used to adjust the position of the measurement center in the second direction; the third adjustment component is installed on the second adjustment component, and the third adjustment component is used to adjust the position of the measurement center in the third direction.

[0023] Preferably, the device for measuring the inner diameter of an object further comprises a collection and processing device electrically connected to the measuring mechanism and the rotating member.

[0024] Preferably, the device for measuring the inner diameter of an object further comprises a display device connected to the acquisition and processing device.

[0025] Compared with the prior art, the object inner diameter measuring device of the present utility model has the following beneficial effects:

[0026] The object inner diameter measuring device of the embodiment of the utility model comprises a base, a measuring mechanism and a clamping and rotating mechanism. The measuring mechanism and the clamping and rotating mechanism are both installed on the base. The clamping and rotating mechanism clamps the measured object and can drive the measured object to rotate. The inner diameter of the measured object is measured by the measuring mechanism. During measurement, the measured object is clamped and rotated by the clamping and rotating mechanism. When the measured object rotates, the inner diameter of multiple different positions of the measured object is measured by the measuring mechanism, thereby obtaining multiple measurement data and improving the measurement efficiency. In addition, since the clamping center of the fixture is located on the rotation center line of the rotating disk, and the connecting line between the clamping center of the fixture and the measurement center of the measuring mechanism is parallel to the first direction, when the fixture drives the measured object to rotate, the clamping center of the fixture and the measurement center of the measuring mechanism do not change. The measurement center position of the measuring mechanism when measuring the inner diameter of multiple different positions of the measured object is the same, thereby reducing the human error caused by the measurement position deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the object inner diameter measuring device according to an embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the connection between the measuring mechanism and the adjusting mechanism in the embodiment of the utility model;

[0029] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0030] Figure 4 It is a structural schematic diagram of the rotary clamping mechanism described in an embodiment of the utility model.

[0031] Numbers in the figure:

[0032] 1. Base;

[0033] 2. Measuring mechanism; 21. Measuring fixed arm; 22. Measuring movable arm; 221. Measuring end; 2211. Sliding ball; 222. Operating end; 23. Elastic member; 24. Indicator; 241. Dial; 242. Pointer; 25. Transmission rack; 26. Encoder;

[0034] 3. Clamping and rotating mechanism; 31. Driving member; 32. Rotating disk; 33. Clamp; 331. Gripper; 332. Gripper fastener; 34. Housing;

[0035] 4. Adjustment mechanism; 41. First adjustment assembly; 411. Linear guide rail; 412. Sliding block; 413. Locking member; 42. Second adjustment assembly; 421. Adjustment seat; 422. First fastener; 43. Third adjustment assembly; 431. Guide rod; 432. Connecting seat; 433. Second fastener;

[0036] 5. Collection and processing equipment;

[0037] 6. Display device.

[0038] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] See also Figure 1-Figure 4As shown, the embodiment of the utility model provides an object inner diameter measuring device, which has a first direction X, and includes a base 1, a measuring mechanism 2 and a clamping and rotating mechanism 3. The measuring mechanism 2 is installed on the base 1, and the measuring mechanism 2 is used to measure the inner diameter of the measured object; the clamping and rotating mechanism 3 includes a driving member 31, a rotating disk 32 and a clamp 33. The driving member 31 is installed on the base 1 and connected to the rotating disk 32, and the driving member 31 is used to drive the rotating disk 32 to rotate; the clamp 33 is installed on the rotating disk 32 and the clamping center of the clamp 33 is located on the rotation center line of the rotating disk 32. The clamp 33 and the measuring mechanism 2 are arranged relatively spaced along the first direction X, and the line connecting the clamping center of the clamp 33 and the measuring center of the measuring mechanism 2 is parallel to the first direction X. The clamp 33 is used to clamp the measured object. When the driving member 31 drives the rotating disk 32 to rotate, the rotating disk 32 drives the clamp 33 and the measured object clamped by the clamp 33 to rotate synchronously. During the rotation of the clamp 33, the clamping center of the clamp 33 does not change.

[0043] During measurement, the object to be measured is clamped and rotated by the clamping and rotating mechanism 3. When the object to be measured rotates, the measuring mechanism 2 measures the inner diameter of multiple different positions of the object to be measured, thereby obtaining multiple measurement data and improving the measurement efficiency. In addition, since the clamping center of the clamp 33 is located on the rotation center line of the rotating disk 32, and the line connecting the clamping center of the clamp 33 and the measurement center of the measuring mechanism 2 is parallel to the first direction X, when the clamp 33 drives the object to be measured to rotate, the clamping center of the clamp 33 and the measurement center of the measuring mechanism 2 do not change, and the measurement center position of the measuring mechanism 2 when measuring the inner diameter of multiple different positions of the object to be measured is the same, thereby reducing the human error caused by the measurement position deviation.

[0044] It should be noted that the object to be measured can be a bottle-shaped product, or a production mold for a bottle-shaped product, etc., as long as it is an object whose inner diameter needs to be measured.

[0045] See also Figure 1 In some embodiments, the base 1 is in the shape of a flat plate. The base 1 is a mounting and fixing carrier for the measuring mechanism 2 and the clamping and rotating mechanism 3, so that the object inner diameter measuring device as a whole can be stably placed on the ground or on a table to ensure stability and levelness, avoid the measuring mechanism 2 and the clamping and rotating mechanism 3 from being disturbed by shaking when working together, and reduce measurement errors. In some embodiments, the base 1 is in the shape of a rectangular flat plate, and the first direction X is the length direction of the base 1. The object inner diameter measuring device also has a second direction Y and a third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other. When the first direction X is the length direction of the base 1, the second direction Y is the width direction of the base 1, and the third direction Z is the height direction of the base 1.

[0046] See also Figure 1 and Figure 2In some embodiments, the measuring mechanism 2 includes a measuring fixed arm 21, a measuring movable arm 22, an elastic member 23, an indicator 24 and a transmission assembly. The measuring fixed arm 21 is mounted on the base 1; one end of the measuring movable arm 22 is a measuring end 221, and the measuring end 221 is used to contact the inner wall of the object to be measured; the other end of the measuring movable arm 22 is an operating end 222, and the middle part of the measuring movable arm 22 is hinged to the middle part of the measuring fixed arm 21, so that the measuring movable arm 22 and the measuring fixed arm 21 cross in a scissor shape, and the measuring movable arm 22 can perform horizontal rotation relative to the measuring fixed arm 21 with the middle hinge point as the center of the circle, and the operating end 222 of the movable measuring movable arm 22 22, which can make the measuring end 221 of the measuring arm 22 approach or move away from the measuring fixed arm 21; the elastic member 23, which connects the measuring fixed arm 21 and the measuring arm 22, and the elastic member 23 is used to release the measuring arm 22 after the measuring arm 22 is moved, so that the measuring arm 22 can be automatically reset; the indicator 24 is installed on the measuring fixed arm 21, and the indicator 24 has a dial 241 and a pointer 242 rotatably installed on the dial 241, and the dial 241 is provided with a scale; the transmission assembly is installed on the measuring arm 22 and close to the operating end 222, and the transmission assembly is connected to the pointer 242 to drive the pointer 242 to rotate when the measuring arm 22 moves. When the pointer 242 rotates, the pointer 242 indicates on the scale of the dial 241 to indicate the inner diameter of the measured object at the current measured position. Press the operating end 222 of the measuring movable arm 22 to make the measuring end 221 close to the measuring fixed arm 21, and the measuring end 221 and the measuring fixed arm 21 are closed, so that the measuring fixed arm 21 and the measuring movable arm 22 are conveniently placed in the measured object. And because when the clamping rotating mechanism 3 clamps the measured object, the clamping center of the clamping rotating mechanism 3 is located on the central axis of the measured object, the central axis of the measured object is parallel to the first direction, and the line connecting the clamping center and the measuring center is parallel to the first direction, then the measuring center of the measuring mechanism 2 is located on the central axis of the measured object. During measurement, the measuring fixed arm 21 is fixed, and the end of the measuring fixed arm 21 is located at the center point of the measured object. After the measuring movable arm 22 is opened relative to the measuring fixed arm 21, it contacts the inner wall of the measured object, so that the distance between the measuring fixed arm 21 and the measuring movable arm 22 is the inner diameter of the measured object. As the clamp 33 rotates while holding the object to be measured, the measuring end 221 of the measuring arm 22 contacts a plurality of different measured positions of the object to be measured. When the inner diameters at the measured positions are different, the position of the measuring end 221 of the measuring arm 22 will be different, resulting in a change in the position of the operating end 222 of the measuring arm 22. When the operating end 222 moves, the pointer 242 will be driven to rotate through the transmission assembly. After the measured position changes, the measured inner diameter at the changed measured position can be obtained through the new indication position of the pointer 242. In this way, the measured inner diameters at a plurality of measured positions of the object to be measured are obtained, and a plurality of measurement data samples are obtained, so that the inner diameter deviation of the object to be measured is evaluated based on the plurality of measurement data samples.

[0047] In some embodiments, the dial 241 of the indicator 24 includes a large dial and a small dial, the large dial is used to display 0.01mm to 0.99mm, with each grid being 0.01mm. The small dial is used to display 0 to 9mm, with each grid being 1mm. For each rotation of the large dial, the small dial rotates one grid, i.e., 1mm. In other embodiments, different ranges and accuracies may be used.

[0048] In some embodiments, the transmission assembly includes a transmission rack 25 and a transmission gear, one end of the transmission rack 25 is fixed on the measuring arm 22 and close to the operating end 222, the other end of the transmission rack 25 is meshed with the transmission gear, the transmission gear is connected to the pointer 242, and the transmission gear can be installed on the rotating shaft of the pointer 242. When the measuring arm 22 moves, the measuring arm 22 drives the transmission rack 25 to move, and the transmission rack 25 drives the transmission gear to rotate, thereby driving the pointer 242 to rotate and point to the corresponding value.

[0049] See also Figure 2 In some embodiments, the measuring mechanism 2 further includes an encoder 26 installed at the bottom of the indicator 24, and the encoder 26 is connected to the pointer 242. The encoder 26 can convert the rotation position signal of the pointer 242 into a pulse signal, which is convenient for data collection and processing.

[0050] See also Figure 2 and Figure 3 In some embodiments, the measuring mechanism 2 further includes a sliding ball 2211, which is rotatably mounted on the measuring end 221 of the measuring movable arm 22, and the sliding ball 2211 is located on the side of the measuring movable arm 22 away from the measuring fixed arm 21. The measuring movable arm 22 is in direct contact with the measured object through the sliding ball 2211, and the sliding ball 2211 can roll freely relative to the measured object, thereby reducing direct friction between the measured object and the measuring movable arm 22, and avoiding wear on the inner wall of the measured object.

[0051] In some embodiments, the object inner diameter measuring device also includes an adjusting mechanism 4, which is installed on the base 1 and connected to the measuring mechanism 2. The adjusting mechanism 4 is used to adjust the position of the measuring center of the measuring mechanism 2 to ensure that the line connecting the measuring center of the measuring mechanism 2 and the clamping center of the clamp 33 is parallel to the first direction X, thereby ensuring the reliability of the measurement result.

[0052] See also Figure 1 and Figure 2As shown, in some embodiments, the adjustment mechanism 4 includes a first adjustment component 41, a second adjustment component 42 and a third adjustment component 43. The first adjustment component 41 is mounted on the base 1, and the first adjustment component 41 is used to adjust the position of the measurement center in the first direction X; the second adjustment component 42 is mounted on the first adjustment component 41, and the second adjustment component 42 is used to adjust the position of the measurement center in the second direction Y; the third adjustment component 43 is mounted on the second adjustment component 42, and the third adjustment component 43 is used to adjust the position of the measurement center in the third direction Z. The measurement mechanism 2 is mounted on the third adjustment component 43, and the precise adjustment of the measurement center position is achieved through the cooperation of the first adjustment component 41, the second adjustment component 42 and the third adjustment component 43.

[0053] See also Figure 2 In some embodiments, the first adjustment component 41 includes a linear slide 411, a slider 412, and a locking member 413. The linear slide 411 is fixedly mounted on the base 1, and the linear slide 411 is extended along the first direction X. The slider 412 is slidably mounted on the linear slide 411, and the slider 412 slides along the linear slide 411, driving the second adjustment component 42, the third adjustment component 43, and the measuring mechanism 2 to move along the first direction X as a whole, thereby adjusting the position of the measuring center of the measuring mechanism 2 in the first direction X. The locking member 413 is mounted on one side of the slider 412, and is used to lock the slider 412 and the linear slide 411. When the locking member 413 locks the slider 412, the slider 412 and the linear slide 411 are relatively fixed; when the locking member 413 unlocks the slider 412, the slider 412 can slide along the linear slide 411.

[0054] The second adjustment assembly 42 includes an adjustment seat 421 and a first fastener 422. The adjustment seat 421 is mounted on the slider 412. A strip hole is provided on the adjustment seat 421. The length of the strip hole extends along the second direction Y. The first fastener 422 passes through the strip hole and is fixed to the slider 412 to lock and fix the adjustment seat 421 and the slider 412. The arrangement of the strip hole allows the adjustment seat 421 to have a certain fine-tuning space along the second direction Y, thereby driving the third adjustment assembly 43 and the measuring mechanism 2 to move along the second direction Y as a whole, and adjusting the position of the measuring center of the measuring mechanism 2 in the second direction Y. The first fastener 422 is a screw.

[0055] The third adjustment assembly 43 includes a guide rod 431, a connecting seat 432 and a second fastener 433. The guide rod 431 is vertically fixed on the adjustment seat 421, the connecting seat 432 is arranged on the guide rod 431, and the second fastener 433 is used to lock and fix the connecting seat 432 and the guide rod 431. The second fastener 433 is a screw. The second fastener 433 passes through the connecting seat 432 and abuts on the guide rod 431 to fix the connecting seat 432 and the guide rod 431. The measuring mechanism 2 is connected and fixed to the connecting seat 432. Specifically, the measuring fixed arm 21 of the measuring mechanism 2 is horizontally installed on the connecting seat 432. When the second fastener 433 is loosened, the connecting seat 432 can drive the measuring mechanism 2 to move along the guide rod 431 to achieve the adjustment of the measuring center position of the measuring mechanism 2 in the third direction Z. When the second fastener 433 is locked, the connecting seat 432 is fixed to the guide rod 431. The second fastener 433 is a screw.

[0056] The clamping and rotating mechanism 3 is used to clamp and fix the object to be measured, and rotate under the driving action of the driving member 31, so that the measuring mechanism 2 can measure the inner diameter of each position of the object to be measured. The driving member 31 is a driving motor, preferably a stepping motor, and the driving member 31 is connected to the rotating disk 32 through a gear transmission structure. The clamping and rotating mechanism 3 also includes a housing 34, and the driving member 31 is installed in the housing 34. The housing 34 is installed on the base 1. The housing 34 provides installation space and protection for the driving member 31, and supports the entire clamping and rotating mechanism 3 to stand on the base 1.

[0057] See also Figure 4 In some embodiments, the clamp 33 includes a plurality of grippers 331 and a plurality of gripper fasteners 332. The plurality of grippers 331 are installed on the rotating disk 32 at equal intervals along the circumferential direction of the rotating disk 32. Each gripper 331 has a corresponding gripper fastener 332. The gripper fastener 332 is installed on the outer edge of the rotating disk 32. The gripper fastener 332 is used to adjust the corresponding gripper 331 to loosen or tighten, so that the plurality of grippers 331 clamp the measured object or loosen the measured object. For example, three grippers 331 and gripper fasteners 332 can be provided. The three grippers 331 are distributed at intervals of 120° along the circumferential direction of the rotating disk 32. The three gripper fasteners 332 are provided in a one-to-one correspondence with the three grippers 331.

[0058] In some embodiments, each gripper 331 is provided with a stepped gripping platform to be suitable for clamping objects of different sizes.

[0059] In some embodiments, the object inner diameter measuring device also includes a collection and processing device 5, which is electrically connected to the measuring mechanism 2 and the rotating member. The collection and processing device 5 is used to collect the position angle data of the measured object and the inner diameter value at the position angle, so as to obtain the deviation data of the inner diameter of each position of the measured object from the standard size, and obtain the deviation position and deviation degree of the measured object. The collection and processing device 5 is connected to the encoder 26 of the measuring mechanism 2, receives the pulse signal data of the encoder 26, and thus obtains the inner diameter value data. When the rotating member rotates, the current rotation position data is transmitted to the collection and processing device 5, so that the collection and processing device 5 collects the angle data of the measured object. By analyzing the collected data, the maximum deviation, minimum deviation, average deviation, tolerance and deviation curve diagram of the inner diameter of the measured object can be further obtained, so that the staff can intuitively find the deviation through the deviation curve diagram. The collection and processing device 5 can be a single-chip microcomputer or a PLC controller.

[0060] In some embodiments, the object inner diameter measuring device further includes a display device 6 connected to the acquisition and processing device 5 and used to display the acquired data of the acquisition and processing device 5. The display device 6 is a touch screen or a computer display screen.

[0061] The working process of the utility model is:

[0062] Loosen the locking member 413, adjust the position of the measuring mechanism 2 in the first direction X, and push the measuring mechanism 2 to a position away from the clamping rotating mechanism 3, so as to clamp the object to be measured on the clamping rotating mechanism 3. Then, rotate the gripper fastener 332 to loosen the gripper 331 outward, put the mold or product to be measured into the gripper 331 in the direction of the measured position toward the measuring mechanism 2, select a suitable gripping platform position, and then rotate the gripper fastener 332 in the opposite direction to tighten the gripper 331 inward to clamp the mold or product to be measured;

[0063] Press the operating end 222 of the measuring arm 22 by hand to completely close the measuring arm 22 and the measuring fixed arm 21, then push the measuring mechanism 2 toward the clamping rotating mechanism 3 until the sliding ball 2211 of the measuring arm 22 stops just after the measuring position, slowly release the measuring arm 22, and finally lock the locking piece 413 to prevent the measuring mechanism 2 from moving.

[0064] Start the driver 31 and make it rotate at the set speed, driving the object to be measured on the clamping rotating mechanism 3 to rotate one or more circles. During this process, the acquisition and processing device 5 will collect the position pulse of the driver 31 and the code value measured by the encoder 26 every 0.1 seconds, and convert them into the position angle value and inner diameter value of the object to be measured according to the ratio. By adjusting the rotation speed of the driver 31, the amount of collected data can be adjusted. The slower the rotation speed of the driver 31, the longer the rotation time is, and the more and more precise the data collected; you can also set up multi-circle measurement, average the multi-circle measurement data, and further improve the measurement accuracy.

[0065] After the measurement is completed, the measuring mechanism 2 is first pushed away from the clamping and rotating mechanism 3, and then the object to be measured is removed.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A device for measuring the inner diameter of an object, having a first direction (X), characterized in that: include: Base (1); A measuring mechanism (2) is mounted on the base (1), and the measuring mechanism (2) is used to measure the inner diameter; as well as The clamping and rotating mechanism (3) comprises a driving member (31), a rotating disk (32) and a clamp (33), wherein the driving member (31) is mounted on the base (1) and connected to the rotating disk (32), and the driving member (31) is used to drive the rotating disk (32) to rotate; the clamp (33) is mounted on the rotating disk (32) and the clamping center of the clamp (33) is located on the rotation center line of the rotating disk (32); The clamp (33) and the measuring mechanism (2) are arranged relatively spaced apart along the first direction (X), and a line connecting a clamping center of the clamp (33) and a measuring center of the measuring mechanism (2) is parallel to the first direction (X).

2. The object inner diameter measuring device according to claim 1, characterized in that: The measuring mechanism (2) comprises: A measuring fixed arm (21) is mounted on the base (1); A measuring movable arm (22), one end of the measuring movable arm (22) being a measuring end (221), the other end of the measuring movable arm (22) being an operating end (222), and the middle portion of the measuring movable arm (22) being hinged to the middle portion of the measuring fixed arm (21); An elastic member (23) connecting the measuring fixed arm (21) and the measuring movable arm (22); An indicator meter (24) is mounted on the measuring fixed arm (21).

3. The object inner diameter measuring device according to claim 2, characterized in that: The indicator meter (24) comprises a dial (241) and a pointer (242) rotatably mounted on the dial (241); The measuring mechanism (2) further comprises a transmission assembly mounted on the measuring arm (22) and close to the operating end (222), wherein the transmission assembly is connected to the pointer (242) so as to drive the pointer (242) to rotate when the measuring arm (22) moves.

4. The device for measuring the inner diameter of an object according to claim 3, characterized in that: The measuring mechanism (2) further comprises an encoder (26) mounted on the bottom of the indicator gauge (24), and the encoder (26) is connected to the pointer (242).

5. The device for measuring the inner diameter of an object according to claim 2, characterized in that: The measuring mechanism (2) further comprises a sliding ball (2211) rotatably mounted on the measuring end (221) of the measuring movable arm (22), and the sliding ball (2211) is located on a side of the measuring movable arm (22) facing away from the measuring fixed arm (21).

6. The device for measuring inner diameter of an object according to claim 1, characterized in that: The clamp (33) comprises a plurality of grippers (331) and a plurality of gripper fasteners (332); the plurality of grippers (331) are installed on the rotating disk (32) at equal intervals along the circumferential direction of the rotating disk (32); each of the grippers (331) has a corresponding gripper fastener (332); the gripper fastener (332) is installed on the outer edge of the rotating disk (32); and the gripper fastener (332) is used to adjust the corresponding gripper (331) to loosen or tighten.

7. The device for measuring the inner diameter of an object according to claim 6, characterized in that: Each of the grippers (331) is provided with a stepped gripping platform.

8. The device for measuring inner diameter of an object according to claim 1, characterized in that: The object inner diameter measuring device also includes an adjustment mechanism (4) mounted on the base (1), the adjustment mechanism (4) being connected to the measuring mechanism (2), and the adjustment mechanism (4) being used to adjust the position of the measurement center of the measuring mechanism (2).

9. The device for measuring the inner diameter of an object according to claim 8, characterized in that: The object inner diameter measuring device also has a second direction (Y) and a third direction (Z), and the first direction (X), the second direction (Y) and the third direction (Z) are mutually perpendicular; the adjustment mechanism (4) comprises a first adjustment component (41), a second adjustment component (42) and a third adjustment component (43), the first adjustment component (41) is mounted on the base (1), and the first adjustment component (41) is used to adjust the position of the measurement center in the first direction (X); the second adjustment component (42) is mounted on the first adjustment component (41), and the second adjustment component (42) is used to adjust the position of the measurement center in the second direction (Y); the third adjustment component (43) is mounted on the second adjustment component (42), and the third adjustment component (43) is used to adjust the position of the measurement center in the third direction (Z).

10. The device for measuring inner diameter of an object according to claim 1, characterized in that: The object inner diameter measuring device also includes a collection and processing device (5) which is electrically connected to the measuring mechanism (2) and the rotating member.

11. The device for measuring the inner diameter of an object according to claim 10, characterized in that: The object inner diameter measuring device also includes a display device (6) connected to the acquisition and processing device (5).

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