CN220853434U - Straightness measuring device and detection system - Google Patents

Abstract

The present disclosure provides a straightness measuring device and a detection system. The straightness measuring device includes two supports, a detection frame and a measuring table, wherein the two supports are arranged in parallel and opposite to each other to at least support the two ends of the shaft to be measured respectively; the detection frame can be placed above the shaft to be measured; a through hole is provided on the detection frame along the gravity direction; the measuring table can penetrate into and out of the through hole along the gravity direction so that the measuring end of the measuring table can move against the outer surface of the shaft to be measured that is away from the ground; wherein, when the shaft to be measured reciprocates along the axial direction of the shaft to be measured between the two supports, the measuring table can detect the straightness of the shaft to be measured.

Description

Straightness measuring device and detecting system

Technical Field

The disclosure relates to the technical field of mechanical production, in particular to a straightness measuring device and a straightness measuring system.

Background

Shaft-like parts are one of the typical parts commonly used in machines, and are mainly used to support transmission components, transmit torque and carry loads. The shaft part is a rotating body part, and the length of the shaft part is larger than the diameter of the rotating body part, and the shaft part is generally formed by an outer cylindrical surface, a conical surface and corresponding end surfaces of a concentric shaft. The shaft type parts can be divided into an optical axis, a stepped shaft, a hollow shaft, a crankshaft and the like according to different structural shapes.

Because the structure of the shaft is special, the requirement on the flatness and straightness is high in the mechanical and equipment industries. In general, the straightness and flatness of a shaft are measured by placing the shaft in a marble Dan Pingtai and using a knife edge and a feeler gauge.

However, the measurement mode has low accuracy, large error and inconvenient operation, and even the problem of subsequent use is affected by large error of the measurement result.

Disclosure of utility model

One technical problem to be solved by the present disclosure is: the existing measuring mode for the straightness of the shaft has the problems of lower accuracy, larger result error and unchanged operation.

To solve the above technical problem, an embodiment of the present disclosure provides a straightness measurement device, which includes:

the two supports are arranged in parallel and opposite to each other so as to at least support the two ends of the shaft body to be tested respectively;

the detection frame can be arranged above the shaft body to be detected; the detection frame is provided with a through hole along the gravity direction;

The measuring meter can penetrate into and out of the through hole along the gravity direction, so that the measuring end of the measuring meter movably props against the outer surface of the shaft body to be measured, which is away from the ground;

when the shaft body to be measured reciprocates along the axial direction of the shaft body to be measured between the two supports, the measuring meter can detect the straightness of the shaft body to be measured.

In some embodiments, the straightness measuring device is further provided with a receiving groove on a side of the support facing away from the ground, wherein the receiving groove is used for receiving and limiting the shaft body to be measured.

In some embodiments, the straightness measuring device described above, wherein the receiving groove is a V-groove or a rectangular groove or an arc groove.

In some embodiments, the straightness measuring device is as described above, wherein a bottom of the accommodating groove is provided with a first rolling part;

the first rolling part can rotate around a first direction and is movably abutted against the shaft body to be tested;

Wherein the first direction is perpendicular to the direction in which the support points to the other support and is parallel to the ground.

In some embodiments, the straightness measuring device is further provided with a second rolling part on the opposite side wall of the accommodating groove along the first direction, wherein the second rolling part can rotate around the gravity direction; the second rolling part is movably abutted against the shaft body to be tested.

In some embodiments, the straightness measuring apparatus as described above, wherein the detection frame includes a support portion and a mounting portion;

One end of the supporting part is provided with a mounting part, and the other end of the supporting part can be supported on a supporting surface of the straightness measuring device;

the through hole is arranged on the mounting part.

In some embodiments, the straightness measuring device includes two support portions;

The two supporting parts are arranged at the two ends of the same side of the mounting part, and the through holes are arranged on the mounting part between the two supporting parts.

In some embodiments, the straightness measuring device further includes a locking portion;

the locking part is movably connected with the through hole along the radial direction of the through hole so as to lock or unlock the measuring meter.

In some embodiments, the straightness measuring device is a dial indicator.

A second aspect of the present application provides a detection system comprising:

at least one straightness measuring device as described above.

Through the technical scheme, the straightness measuring device provided by the disclosure enables the shaft body to be measured to move on the two supports along the axial direction of the shaft body by arranging the two supports, and the straightness of the shaft body can be effectively measured by fixing the measuring meter above the shaft body to be measured along with the movement of the shaft body to be measured; the object to be measured is set to be moving, the measuring meter is not fixed, the measuring accuracy is effectively guaranteed, the operation is convenient, and the straightness result can be obtained without repeated attempts. The problems of lower accuracy, larger result error and unchanged operation of the traditional measuring mode of the straightness of the shaft are effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a straightness measurement apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the structure of a support in a straightness measurement apparatus according to an embodiment of the present disclosure;

Fig. 3 is a schematic structural view of a detection frame in the straightness measurement apparatus according to the embodiment of the present disclosure.

Reference numerals illustrate:

1. A support; 11. a receiving groove; 2. a detection frame; 21. a through hole; 22. a support part; 23. a mounting part; 24. a locking part; 3. a measuring meter; 31. a representation table; 32. a measuring rod; 4. a first rolling part; 5. a second rolling part; 6. a shaft body to be measured; a. a first direction.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

Example 1

Referring to fig. 1, the present embodiment discloses a straightness measuring device, which includes two supports 1, a detecting rack 2 and a measuring meter 3, wherein the two supports 1 are parallel and oppositely arranged to at least support two ends of a shaft body 6 to be measured respectively; the detection frame 2 can be arranged above the shaft body 6 to be detected; the detection frame 2 is provided with a through hole 21 along the gravity direction; the measuring meter 3 can penetrate into and out of the through hole 21 along the gravity direction so that the measuring end of the measuring meter 3 can be movably abutted against the outer surface deviating from the ground;

When the shaft body 6 to be measured reciprocates along the axial direction of the shaft body 6 to be measured between the two supports 1, the measuring meter 3 can detect the straightness of the shaft body 6 to be measured.

Specifically, in order to solve the problems that the accuracy of the existing measuring mode for the straightness of the shaft is low, the result error is large and the operation is unchanged, the embodiment provides a straightness measuring device, and the two supports 1 are arranged to realize the support of the shaft body 6 to be measured and the sliding movement of the shaft body 6 to be measured on the same horizontal plane; correspondingly, the measuring meter 3 is arranged above the shaft body 6 to be measured through the detection frame 2, so that the measuring meter can measure the straightness of the shaft body 6 to be measured on the movement distance when the shaft body 6 to be measured performs sliding movement; the accuracy of the measurement result is ensured by the movement of the object to be measured and the fixation of the measuring meter 3, so that complicated racing flake operation is avoided by colleagues, and the measurement efficiency is greatly improved.

The straightness measuring device provided in this embodiment mainly detects straightness of an optical axis, and of course, it can be understood that any straightness of a rod-shaped, roller-shaped, and cylindrical structure can be measured by using the straightness measuring device provided in this embodiment.

The support 1 is a rigid structure, and may be a table structure, a prismatic structure, a frame structure, a table structure, or the like, so long as the support can stably support the shaft 6 to be tested. The shape and size of the support 1 are not limited herein, and may be adjusted according to the specification of the shaft body 6 to be measured. In addition, in this embodiment, it is necessary to ensure that the structures of the two supports 1 are completely identical, at least on the portion supporting the shaft body 6 to be tested, the heights are completely identical, so that the placement of the shaft body with measurement is ensured to be horizontal, and errors of detection results are avoided. The support 1 can be provided with a positioning piece, a limiting piece and the like, so that the limiting of the shaft body 6 to be measured is realized, and the shaft body 6 to be measured is prevented from shaking or shifting on the support 1 to influence the measurement result.

Wherein the detection frame 2 is a rigid structure, which may be, but not limited to, a frame structure, a rod-like structure, etc., capable of providing a mounting location for the measuring meter 3 and of enabling the measuring meter 3 to reach the measuring location. In this embodiment, the detection frame 2 and the support 1 may be integrated or separated, when the detection frame 2 and the support 1 are in an integrated structure, the detection frame 2 may be set to rotate on the support 1 around the gravity direction, when the shaft body 6 to be detected is put in or taken out, the detection frame 2 may be rotated to a position where the shaft body 6 to be detected is not interfered, and then rotated back to keep a state that the measuring end of the measuring meter 3 can abut against the shaft body 6 to be detected; correspondingly, when the detection frame 2 and the support 1 are in a split structure, the detection frame 2 can be moved to a position which does not interfere with the placement or the removal of the shaft body 6 to be detected when the shaft body 6 to be detected is placed in or removed from the support 1, and then the detection frame 2 is moved back to keep the state that the measuring end of the measuring meter 3 can be abutted against the shaft body 6 to be detected; the above arrangement is easily understood by those skilled in the art, and will not be described in detail herein.

In the embodiment, when the shaft body 6 to be measured moves on the two supports 1 along the axial direction thereof, the measuring end of the measuring meter 3 measures the straightness of the distance of the movement of the shaft body 6 to be measured; the measuring meter in the embodiment can be, but not limited to, a dial indicator or a dial indicator, which comprises an indicator 31 and a measuring rod 32; the structure and working principle of the dial indicator and the dial indicator are devices that can be understood by those skilled in the art, and are not described in detail herein.

According to the above list, the straightness measuring device provided by the disclosure, through arranging the two supports 1, the shaft body 6 to be measured moves on the two supports 1 along the axial direction thereof, and the measuring meter 3 is fixed above the shaft body 6 to be measured, so that the straightness of the shaft body can be effectively measured along with the movement of the shaft body 6 to be measured; the object to be measured is set to be moving, the measuring meter 3 is not fixed, the measuring accuracy is effectively guaranteed, the operation is convenient, and the straightness result can be obtained without repeated attempts. The problems of lower accuracy, larger result error and unchanged operation of the traditional measuring mode of the straightness of the shaft are effectively solved.

The term "and/or" is herein merely one kind of association relation describing the associated object, identifying three kinds of relations that may exist, e.g. a and/or B, specifically understood as: the composition may contain both a and B, and may contain a alone or B alone, and any of the above three cases may be provided.

In some embodiments, referring to fig. 1 and fig. 2, in a specific implementation, a receiving groove 11 is provided on a side of the support 1 facing away from the ground, where the receiving groove 11 is used to receive and limit the shaft 6 to be measured.

Specifically, in order to ensure stable movement of the shaft body 6 to be tested, inaccuracy of a detection result caused by deviation of the shaft body 6 to be tested in movement is avoided, in this embodiment, a containing groove 11 is formed in the support 1, and the containing groove 11 can contain at least part of the shaft body 6 to be tested around the axial direction of the shaft body 6 to be tested, so that on one hand, stable support of the support 1 to the shaft body 6 to be tested can be ensured, and on the other hand, guiding effect can be achieved on the movement of the shaft body 6 to be tested along the axial direction. The shape of the accommodating groove 11 may be, but not limited to, a V-groove, a rectangular groove, an arc groove, or the like, and the size of the accommodating groove 11 is not limited herein, and may be designed and adjusted according to the diameter of the shaft body 6 to be measured. It should be noted that: the straightness measuring device provided in this embodiment needs to ensure that a certain amount of pressing-in exists between the measuring rod 32 of the measuring meter 3 and the surface of the shaft body 6 to be measured during measurement, so as to ensure the accuracy of the measuring result.

In some embodiments, referring to fig. 3, the straightness measuring device provided in this embodiment, in a specific implementation, a first rolling part 4 is provided at a bottom of the accommodating groove 11; the first rolling part 4 can rotate around the first direction a, and the first rolling part 4 is movably abutted against the shaft body 6 to be tested; wherein the first direction a is perpendicular to the direction in which the support 1 points the other support 1 and parallel to the ground.

Specifically, in order to ensure the smoothness of the axial movement of the shaft body 6 to be tested and ensure the accuracy of the detection result, in this embodiment, the first rolling part 4 is arranged at the bottom of the accommodating groove 11, and the first rolling part 4 is of a rigid structure and can be a roller, a rolling shaft, a ball and the like, so that the shaft body 6 to be tested can rotate along with the movement of the shaft body 6 to be tested after being abutted against the shaft body 6 to be tested, the rolling fit with the shaft body 6 to be tested is realized, the friction between the shaft body 6 to be tested and the accommodating groove 11 is effectively reduced, the smoothness of the movement of the shaft body 6 to be tested is ensured, and the influence on the accuracy of the result of the measuring meter 3 due to the jamming caused by the friction is avoided. The form in which the first rolling portion 4 is provided at the groove bottom is suitable for the form in which the accommodation groove 11 is arc-shaped or rectangular, and the groove bottom of the accommodation groove 11 in this form is necessarily abutted against the shaft body 6 to be measured.

In some embodiments, referring to fig. 3, in the straightness measuring apparatus provided in this embodiment, in a specific implementation, a second rolling portion 5 is disposed on a side wall of the accommodating groove 11 opposite to the first direction a, and the second rolling portion 5 can rotate around the gravity direction; the second rolling part 5 is movably abutted against the shaft body 6 to be tested.

Specifically, in order to adapt to any form of accommodating groove, the stable and smooth movement of the shaft body 6 to be measured is ensured, in this embodiment, the second rolling part 5 may be further provided on the opposite side wall of the accommodating groove 11 along the first direction a, and the second rolling part 5 may be a rigid structure, and may be a roller, a rolling shaft, a ball, etc., so that after it collides with the shaft body 6 to be measured, it may rotate along with the movement of the shaft body 6 to be measured, so as to realize rolling fit with the shaft body 6 to be measured, effectively reduce friction between the shaft body 6 to be measured and the accommodating groove 11, ensure smoothness of the movement of the shaft body 6 to be measured, and avoid that the result accuracy of the measuring meter 3 is affected due to jamming caused by friction. The form of arranging the second rolling part 5 at the bottom of the groove is suitable for the form of arc-shaped or rectangular or V-shaped containing groove 11, and the groove wall of the containing groove 11 under the form can be in contact with the shaft body 6 to be detected.

In some embodiments, the straightness measuring device provided in this embodiment, in a specific implementation, the detection frame 2 includes a support portion 22 and a mounting portion 23; one end of the supporting part 22 is provided with an installation part 23, and the other end can be supported on a supporting surface of the straightness measuring device; the through hole 21 is provided in the mounting portion 23.

Specifically, in order to implement that the measuring meter 3 is placed above the shaft body 6 to be measured for detection, in this embodiment, the detection frame 2 is set to include a supporting portion 22 and an installation portion 23, where the supporting portion 22 and the installation portion 23 are both rigid structures, the supporting portion 22 provides stable support and high support for the installation portion 23 and the measuring meter 3, and the installation portion 23 provides an installation position for the measuring meter 3; the shapes of the support portion 22 and the mounting portion 23 are not limited herein, and may be designed and adjusted according to actual conditions, for example: the supporting part 22 and the mounting part 23 can form an L-shaped structure to extend the mounting part 23 or the measuring meter 3 above the shaft body 6 to be measured; for another example: the support portion 22 and the mounting portion 23 can form a C-shaped structure across the shaft body 6 to be measured, maintaining a state in which the measuring meter 3 is located above the shaft body 6 to be measured. It is understood that the support surface of the straightness measuring device may be, but is not limited to, a horizontal surface, a floor surface, a countertop, etc.

In some embodiments, referring to fig. 1 and fig. 3, the straightness measuring apparatus provided in this embodiment includes two support portions 22 in a specific implementation; the two support portions 22 are disposed at both ends of the same side of the mounting portion 23, and the through hole 21 is disposed on the mounting portion 23 between the two support portions 22.

Specifically, in order to ensure the stability of the installation of the measuring meter 3 and avoid the problem that the weight of the head and the feet affects the detection result, in this embodiment, the two supporting portions 22 are respectively arranged at two ends of the same side of the installation portion 23 to play a role of a supporting leg, correspondingly, the through hole 21 is arranged on the installation portion 23 between the two supporting portions 22, preferably on the central position, so that the stability of the installation of the measuring meter 3 is ensured, and the shaking or the offset can not occur along with the movement of the shaft body 6 to be measured, thereby effectively ensuring the accuracy of the detection result.

In some embodiments, referring to fig. 1 and fig. 3, the straightness measurement apparatus provided in this embodiment further includes a locking portion 24 in a specific implementation; the locking portion 24 is movably connected with the through hole 21 in the radial direction of the through hole 21 so as to be able to lock or unlock the measuring meter 3.

Specifically, in order to adapt to the shaft body 6 to be measured of different specifications and improve the overall portable operation of the straightness measuring device, in this embodiment, the locking portion 24 is arranged on the detection frame 2, the locking portion 24 can be, but is not limited to, a screw, a bolt and other structures, the through hole 21 is penetrated along the radial direction of the through hole 21 and is abutted against the measuring rod 32, the tightness degree of the abutted measuring rod 32 is adjusted by screwing to realize locking or loosening, so that the stability of the measuring rod 32 can be ensured, and the degree of exposing the through hole 21 of the measuring rod 32 can be adjusted according to the shaft body 6 to be measured of different specifications or different operation steps.

Example 2

The embodiment provides a detection system, which comprises at least one straightness measuring device.

The straightness measuring device is the straightness measuring device of embodiment 1, and the structure and the working principle thereof are described in detail in embodiment 1, and are not described in detail herein.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (10)

1. A straightness measurement apparatus, comprising:

The two supports (1) are arranged in parallel and opposite to each other so as to at least support the two ends of the shaft body (6) to be tested respectively; the support (1) is provided with a first rolling part (4) and a second rolling part (5), the first rolling part (4) can rotate around a first direction (a), the first rolling part (4) is movably abutted against the shaft body (6) to be tested, and the second rolling part (5) can rotate around the gravity direction; the second rolling part (5) is movably abutted against the shaft body (6) to be tested; the first direction (a) is perpendicular to the direction in which the support (1) points to the other support (1) and is parallel to the ground;

The detection frame (2) can be arranged above the shaft body (6) to be detected; a through hole (21) is formed in the detection frame (2) along the gravity direction;

The measuring meter (3) can penetrate into and out of the through hole (21) along the gravity direction, so that the measuring end of the measuring meter (3) is movably abutted against the outer surface of the shaft body (6) to be measured, which is away from the ground;

When the shaft body (6) to be detected reciprocates along the axial direction of the shaft body (6) to be detected between the two supports (1), the measuring meter (3) can detect the straightness of the shaft body (6) to be detected.

2. The straightness measurement apparatus as claimed in claim 1, wherein:

One side of the support (1) deviating from the ground is provided with a containing groove (11), and the containing groove (11) is used for containing and limiting the shaft body (6) to be tested.

3. The straightness measurement apparatus as claimed in claim 2, wherein:

The accommodating groove (11) is a V-shaped groove or a rectangular groove or an arc groove.

4. The straightness measurement apparatus as claimed in claim 2, wherein:

the bottom of the accommodating groove (11) is provided with the first rolling part (4).

5. The straightness measurement apparatus as claimed in claim 4, wherein:

The second rolling parts (5) are arranged on the side walls of the accommodating groove (11) opposite to the first direction (a).

6. The straightness measurement apparatus as claimed in claim 1, wherein:

the detection frame (2) comprises a supporting part (22) and a mounting part (23);

one end of the supporting part (22) is provided with the mounting part (23), and the other end of the supporting part can be supported on a supporting surface of the straightness measuring device;

the through hole (21) is provided in the mounting portion (23).

7. The straightness measurement apparatus as claimed in claim 6, wherein:

The number of the supporting parts (22) is two;

The two supporting parts (22) are arranged at two ends of the same side of the mounting part (23), and the through holes (21) are arranged on the mounting part (23) between the two supporting parts (22).

8. The straightness measurement apparatus as claimed in claim 1, wherein:

also comprises a locking part (24);

The locking part (24) is movably connected with the through hole (21) along the radial direction of the through hole (21) so as to lock or unlock the measuring meter (3).

9. The straightness measurement apparatus as claimed in claim 1, wherein:

the measuring meter (3) is a dial indicator or a dial indicator.

10. A detection system, comprising:

the straightness measuring apparatus of at least one claim 1.