Outer diameter detection device

Abstract

The utility model discloses an external diameter detection device, comprising a housing which is provided with a chamber and an opening structure, and the opening structure is communicated with the outer wall of the housing and the chamber; each lever is provided with a first end and a second end which are opposite to each other, the first end is located in the cavity, and the second end penetrates through the opening structure and is located outside the shell; every two adjacent levers are arranged in the first direction. The movable connecting structure is located in the cavity, and the levers are movably connected with the shell through the movable connecting structure, so that the second ends of the two levers can be relatively close to or far away from each other in the first direction; the sensing assembly is located in the cavity and used for sensing the position change of the two adjacent levers in the first direction; the movable connecting structure comprises a first elastic component and a second elastic component, the first elastic component can provide first elastic supporting force for the lever, the second elastic component can provide second elastic supporting force for the lever, and the first elastic supporting force and the second elastic supporting force are opposite and arranged in the first direction.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to an outer diameter detection device. Background Art

[0002] External diameter detection devices are an important component of active measurement and are often used to measure the external diameter of shafts and other components during grinding. The measurement accuracy of external diameter detection devices directly determines the machining accuracy of shafts and other components.

[0003] Therefore, how to improve measurement accuracy has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the utility model provides an outer diameter detection device to improve measurement accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An outer diameter detection device, comprising:

[0007] a housing, the housing comprising a chamber and an opening structure, the opening structure communicating with an outer wall of the housing and the chamber;

[0008] at least two levers, each having a first end and a second end facing each other, the first end being located within the chamber, and the second end passing through the opening structure and located outside the housing; two adjacent levers being arranged along a first direction, the second ends being contact ends for contacting a component to be measured, and a space capable of accommodating the component to be measured being formed between the second ends of the two adjacent levers;

[0009] a movable connection structure located in the chamber, wherein the levers are movably connected to the housing via the movable connection structure, so that the second ends of the two levers can move closer to and farther from each other along the first direction;

[0010] a sensing component located in the chamber, for sensing position changes of two adjacent levers in the first direction;

[0011] in,

[0012] The movable connection structure includes a first elastic component and a second elastic component. The first elastic component can provide a first elastic supporting force to the lever, and the second elastic component can provide a second elastic supporting force to the lever. The first elastic supporting force and the second elastic supporting force are opposite and arranged along the first direction.

[0013] Optionally, in the above-mentioned outer diameter detection device, the first elastic component connects the first end of the lever and the housing, and the second elastic component connects the housing and a first position of the lever, and the first position is located between the first end and the second end of the lever.

[0014] Optionally, in the above outer diameter detection device, the sensor assembly and the second elastic component are correspondingly arranged along the first direction.

[0015] Optionally, in the above outer diameter detection device, when the first elastic component is in an elastically deformed state, the first elastic supporting force is a force that causes two adjacent levers to move relatively apart;

[0016] When the second elastic component is in an elastically deformed state, the second elastic supporting force is a force that causes two adjacent levers to move relatively close to each other.

[0017] Optionally, in the above outer diameter detection device, along the first direction, the first elastic component and the second elastic component are respectively located on both sides of the lever.

[0018] Optionally, in the above outer diameter detection device, the first elastic component is a leaf spring, the leaf spring has a first surface and a second surface opposite to each other, the lever is connected to the first surface of the leaf spring, and the second surface of the leaf spring is connected to the housing;

[0019] And / or, the second elastic component is a compression spring, one end of the compression spring is connected to the lever, and the other end of the compression spring is connected to the housing.

[0020] Optionally, in the above outer diameter detection device, the sensor component is located in the chamber near the second end of the lever.

[0021] Optionally, in the above outer diameter detection device, the sensing component includes:

[0022] a first component connected to one of the two adjacent levers;

[0023] The second component is connected to the other of the two adjacent levers and can generate an induction signal when the first component and the second component move relative to each other.

[0024] Optionally, in the above outer diameter detection device, the first component and the second component are a coil and a magnetic core respectively.

[0025] Optionally, the outer diameter detection device further comprises a limit block located between the two adjacent levers;

[0026] In a state where no external force is applied, the lever is in limiting contact with the limiting block under the action of the first elastic supporting force of the first elastic component and the second elastic supporting force of the second elastic component.

[0027] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an outer diameter detection device that can apply an external force to a lever so that the lever overcomes the first elastic support force of the first elastic component or the second elastic support force of the second elastic component, thereby changing its position in a first direction. The sensing component can sense the position change and determine the size of the measured component. Because the first elastic support force and the second elastic support force are opposite and arranged along the first direction, the first elastic component and the second elastic component are synchronously elastically deformed during the process of the lever changing its position in the first direction. Under the action of the first elastic support force and the second elastic support force, the stability of the lever is ensured, thereby effectively improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 This is a schematic structural diagram of the outer diameter detection device disclosed in an embodiment of the utility model;

[0030] Figure 2 A schematic cross-sectional view of an outer diameter detection device disclosed in an embodiment of the present utility model;

[0031] Figure 3 For the Figure 2 Schematic cross-section of the middle BB surface;

[0032] in,

[0033] Housing 1; cover 2; lever 3; sealing member fixing block 4; limit block 5; fixing bracket 6; limit block fixing component 7; second pressure block 8; magnetic core fixing seat 9; first component 10; first elastic component 11; first cable fixing component 12; second cable fixing component 13; second component 14; first pressure block 15; gasket 16; second elastic component 17; chamber 18; first direction X. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Please see the attached Figure 1 、 Figure 2 and Figure 3 The utility model discloses an outer diameter detection device, which includes a housing, a lever 3, a movable connection structure and a sensor component.

[0036] The housing has a chamber 18 and an opening structure, the opening structure connecting the outer wall of the housing with the chamber 18. The housing serves as the outer shell of the outer diameter detection device. To facilitate assembly of the lever 3, the movable connection structure, and the sensor assembly, the housing can be configured as a split structure. Specifically, in this embodiment, the housing can include a shell 1 and a cover plate 2. The shell 1 has a groove structure, and the cover plate 2 is connected to the shell 1 to close the opening of the groove structure, so that the groove structure and the side of the cover plate 2 facing the groove structure enclose the chamber 18.

[0037] In order to improve the sealing effect of the chamber 18 , a gasket 16 is provided between the cover plate 2 and the housing 1 .

[0038] There are at least two levers 3, each having a first end and a second end facing each other. The first end is located within the chamber 18, and the second end passes through the opening structure and is located outside the housing. Two adjacent levers 3 are arranged along the first direction X. The second end is a contact end for contacting the component to be measured, and a space capable of accommodating the component to be measured is formed between the second ends of the two adjacent levers 3.

[0039] It can be understood that in the first direction X, there is a gap between the inner wall of the opening structure and the second end, so that the second ends of two adjacent levers 3 will not contact the inner wall of the opening structure during the process of relative approach and distance, effectively avoiding the shell hindering the movement of the second end of the lever 3 in the first direction X.

[0040] The second end of the lever 3 can directly contact the component being measured, or the second end of the lever 3 can be connected to a connecting rod structure, which contacts the component being measured, so that the second end of the lever 3 and the component being measured are indirectly in contact. The connecting rod structure can include a measuring rod and a measuring head.

[0041] The movable connection structure is located in the chamber 18, and the levers 3 are movably connected to the housing via the movable connection structure, so that the second ends of the two levers 3 can move closer to and farther from each other along the first direction X;

[0042] That is, the lever 3 is movably connected to the housing via the movable connection structure, so that the position of the lever 3 in the chamber 18 can be changed.

[0043] The sensing component is located in the chamber 18 and is used to sense the position change of two adjacent levers 3 in the first direction X;

[0044] When the size of the component being measured is different, the position of the second end of the lever 3 is different, thereby causing the position of the lever 3 in the first direction X to change. The position change of the lever 3 can be sensed by the sensing component and used as a basis for calculating the size of the component being measured, thereby obtaining the size of the component being detected. The sensing component can be a position sensor or a displacement sensor, etc.

[0045] in,

[0046] The movable connection structure includes a first elastic component 11 and a second elastic component 17. The first elastic component 11 can provide a first elastic supporting force to the lever 3, and the second elastic component 17 can provide a second elastic supporting force to the lever 3. The first elastic supporting force and the second elastic supporting force are opposite and arranged along the first direction X.

[0047] The outer diameter detection device provided in the embodiment of the present utility model can apply an external force to the lever 3, causing the lever 3 to overcome the first elastic support force of the first elastic component 11 and the second elastic support force of the second elastic component 17, thereby changing its position in the first direction X. The sensing component can sense this position change and determine the size of the measured component. Because the first elastic support force and the second elastic support force are opposite and arranged along the first direction X, the first elastic component 11 and the second elastic component 17 synchronously elastically deform during the position change of the lever 3 in the first direction X. The first and second elastic support forces ensure the stability of the lever 3, thereby effectively improving measurement accuracy.

[0048] In addition, the two elastic components provide supporting force for the lever 3, so that the lever 3, the first elastic component 11 and the second elastic component 17 form a relatively connected combined structure, which can effectively improve the structural stability of the first elastic component 11 and the second elastic component 17, and avoid the situation where the structural stability is low due to a single elastic structure applying elastic force to the lever 3, thereby reducing the occurrence of deformation or dislocation of the elastic components, and further improving the measurement accuracy.

[0049] In this embodiment, the first elastic component 11 can change its first elastic support force as the amount of elastic deformation increases. Alternatively, the first elastic component 11 can be a constant-force elastic component, that is, the first elastic support force remains constant as the amount of elastic deformation of the first elastic component 11 increases. Similarly, the second elastic component 17 can change its second elastic support force as the amount of elastic deformation increases. Alternatively, the second elastic component 17 can be a constant-force elastic component, that is, the second elastic support force remains constant as the amount of elastic deformation of the second elastic component 17 increases.

[0050] In this embodiment, the first elastic component 11 connects the first end of the lever 3 and the housing, and the second elastic component 17 connects the housing and the first position of the lever 3 , which is located between the first end and the second end of the lever 3 .

[0051] like Figure 2 As shown, the housing further includes a fixed bracket 6 disposed within a chamber 18, and a first elastic component 11 connects the first end of the lever 3 to the fixed bracket 6. Specifically, the first elastic component 11 includes a first portion and a second portion arranged along its extension direction. The first portion of the first elastic component 11 is fixedly connected to the fixed bracket 6 via a first pressure block 15, while the second portion of the first elastic component 11 is fixedly connected to the first end of the lever 3 via a second pressure block 8. A first predetermined gap is defined between the first end of the lever 3 and the fixed bracket 6. When an external force is applied to the lever 3, causing the position of the lever 3 in the first direction X to change, the portion of the first elastic component 11 located within the first predetermined gap undergoes elastic deformation.

[0052] In some embodiments, there is a second predetermined gap between the fixed bracket 6 and the second pressure block 8. When the position of the lever 3 in the first direction X changes beyond a predetermined range, the fixed bracket 6 and the second pressure block 8 can be in relative contact to limit the movement of the lever 3.

[0053] like Figure 2 and Figure 3 As shown, the sensing assembly and the second elastic component 17 are correspondingly arranged along the first direction X. That is, under the action of the second elastic supporting force of the second elastic component 17 , it can be transmitted to the sensing assembly through the lever 3 .

[0054] Among them, the sensing component has a relatively matching structure, which can guide the movement of the lever 3. For example, the sensing component includes a coil and a magnetic core, and the coil and the magnetic core are respectively connected to the two levers 3. In the process of the two levers 3 approaching and moving away from each other, the coil and the magnetic core have sliding matching surfaces that slide relative to each other, so as to play an auxiliary guiding role in the movement of the lever 3 along the first direction X. Since the sensing component and the second elastic component 17 are arranged correspondingly along the first direction X, the second elastic supporting force is the same or approximately the same as the relative movement direction of the coil and the magnetic core, ensuring the stability of the relative movement of the coil and the magnetic core.

[0055] Specifically, when the first elastic component 11 is elastically deformed, the first elastic supporting force is a force that moves two adjacent levers 3 relatively apart; when the second elastic component 17 is elastically deformed, the second elastic supporting force is a force that moves two adjacent levers 3 relatively close together.

[0056] Furthermore, when the first elastic component 11 and the second elastic supporting force do not cause elastic deformation, the lever 3 is connected via the first elastic component 11 and the second elastic component 17 , so that the structure of the lever 3 in the chamber 18 is stable.

[0057] In this embodiment, the first elastic member 11 and the second elastic member 17 are located on either side of the lever 3 along the first direction X. That is, the first elastic member 11, the lever 3, and the second elastic member 17 are located at different positions along the first direction X. The first elastic member 11, the lever 3, and the second elastic member 17 are arranged along the first direction X.

[0058] In the outer diameter detection device provided in the embodiments of the present invention, the first elastic component 11 is a leaf spring having a first surface and a second surface facing each other. The lever 3 is connected to the first surface of the leaf spring, and the second surface of the leaf spring is connected to the housing. In some specific embodiments, the first pressure block 15 and the second pressure block 8 are both leaf spring pressure blocks. Threaded holes can be provided in the leaf spring pressure blocks to facilitate bolted connection of the leaf spring pressure blocks, the leaf spring, and the lever 3 or the housing (fixing bracket 6).

[0059] The lever 3 can swing along the first direction X around the first elastic component 11 (leaf spring).

[0060] Alternatively, the second elastic member 17 may be a compression spring, one end of which is connected to the lever 3 and the other end of which is connected to the housing. In this embodiment, the other end of the compression spring abuts against the inner wall of the chamber 18 .

[0061] Furthermore, the sensor assembly is located in the chamber 18 near the second end of the lever 3. That is, the sensor assembly is closer to the measured component, making the number reflected by the sensor assembly more real and accurate. In other words, the measurement accuracy of the outer diameter detection device is further improved.

[0062] In some specific embodiments, the sensor assembly includes a first component 10 and a second component 14. The first component 10 is connected to one of two adjacent levers 3; the second component 14 is connected to the other of the two adjacent levers 3. When the first component 10 and the second component 14 move relative to each other, a sensing signal can be generated. The sensing signal can be transmitted to a processor via wired or wireless transmission, thereby determining the size of the measured component detected by the outer diameter detection device.

[0063] In this embodiment, the sensing signal is preferably transmitted to the corresponding processor via an electrical cable. The outer diameter detection device may include a processor and the processor is located in the chamber 18, or the processor may be arranged outside the chamber 18. The outer diameter detection device provided in the embodiment of the utility model may also be relatively independent of the processor, that is, the processor may be an external component of the outer diameter detection device.

[0064] In embodiments where the processor is not disposed within the chamber 18, the housing may include a cable securing structure. Figure 2 As shown, the cable fixing structure includes a first cable fixing member 12 and a second cable fixing member 13. The first cable fixing member 12 is connected to the housing 1, and the second cable fixing member 13 is connected to the first cable fixing member 12. The first cable fixing member 12 and the second cable fixing member 13 form a channel for the power supply cable to pass through. The outer dimensions of the second cable fixing member 13 can be smaller than the first cable fixing member 12 to provide support for the portion of the power cable close to the housing 1, preventing damage to the cable due to excessive bending, and effectively extending the service life of the power cable.

[0065] like Figure 2 and Figure 3 As shown, the first component 10 and the second component 14 are respectively a coil and a magnetic core. Specifically, the first component 10 is a magnetic core, which is fixed to one of the two adjacent levers 3 via a magnetic core fixing base 9, and the second component 14 is a coil (not shown in the figure), which is fixed to the other of the two adjacent levers 3 via a coil fixing base.

[0066] Preferably, the first component 10 is fixed to the side of one of the two adjacent levers 3 facing the other lever 3, and the second component 14 is fixed to the side of the other of the two adjacent levers 3 facing the one lever 3, so that the sensing assembly is located between the two adjacent levers 3, that is, one lever 3, the sensing assembly, and the other lever 3 are arranged along the first direction X. Through the above arrangement, the compactness of the structure is effectively improved, and the miniaturization of the outer diameter detection device is facilitated.

[0067] The outer diameter detection device provided in this embodiment of the utility model further includes a stopper 5 positioned between two adjacent levers 3. In the absence of external force, the levers 3 engage the stopper 5 under the action of the first elastic support force of the first elastic component 11 and the second elastic support force of the second elastic component 17. This arrangement prevents the adjacent levers 3 from coming too close together and potentially affecting the first elastic component 11 and the second elastic component 17 (e.g., excessive deformation of the elastic components, resulting in plastic bending, etc.).

[0068] In this embodiment, the limit block 5 is located in the chamber 18 and is connected to the shell (housing 1 ) via the limit block fixing component 7 .

[0069] In order to ensure the sealing effect of the chamber 18 and prevent external dust from entering the chamber 18, a seal can be set in the opening structure to cover it or a sealing ring can be installed on the lever 3. The seal or sealing ring can be set on the shell (housing 1) through the seal fixing block 4.

[0070] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0071] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An outer diameter detection device, characterized in that: include: A shell, the shell having a chamber (18) and an open hole structure, the open hole structure communicating with the outer wall of the shell and the chamber (18); At least two levers (3), each lever (3) having a first end and a second end facing each other, the first end being located in the chamber (18), and the second end passing through the opening structure and being located outside the housing; two adjacent levers (3) are arranged along a first direction (X), the second ends being contact ends for contacting a component to be measured, and a space capable of accommodating the component to be measured is formed between the second ends of the two adjacent levers (3); A movable connection structure is located in the chamber (18), and the lever (3) is movably connected to the housing via the movable connection structure, so that the second ends of the two levers (3) can move closer to and farther away from each other along the first direction (X); A sensing component located in the chamber (18), used for sensing position changes of two adjacent levers (3) in the first direction (X); in, The movable connection structure includes a first elastic component (11) and a second elastic component (17), wherein the first elastic component (11) can provide a first elastic supporting force to the lever (3), and the second elastic component (17) can provide a second elastic supporting force to the lever (3), wherein the first elastic supporting force and the second elastic supporting force are opposite and are arranged along the first direction (X).

2. The outer diameter detection device according to claim 1, characterized in that The first elastic component (11) connects the first end of the lever (3) and the housing, and the second elastic component (17) connects the housing and a first position of the lever (3), the first position being located between the first end and the second end of the lever (3).

3. The outer diameter detection device according to claim 2, characterized in that: The sensing component and the second elastic component (17) are correspondingly arranged along the first direction (X).

4. The outer diameter detection device according to claim 2, wherein: When the first elastic component (11) is in an elastically deformed state, the first elastic supporting force is a force that causes two adjacent levers (3) to move relatively apart; When the second elastic component (17) is in an elastically deformed state, the second elastic supporting force is a force that causes two adjacent levers (3) to move relatively close to each other.

5. The outer diameter detection device according to claim 1, wherein: Along the first direction (X), the first elastic component (11) and the second elastic component (17) are respectively located on two sides of the lever (3).

6. The outer diameter detection device according to claim 5, characterized in that: The first elastic component (11) is a leaf spring having a first surface and a second surface opposite to each other, the lever (3) is connected to the first surface of the leaf spring, and the second surface of the leaf spring is connected to the housing; And / or, the second elastic component (17) is a compression spring, one end of the compression spring is connected to the lever (3), and the other end of the compression spring is connected to the housing.

7. The outer diameter detection device according to claim 1, wherein: The sensing assembly is located in the chamber (18) near the second end of the lever (3).

8. The outer diameter detection device according to claim 1, wherein: The sensing component includes: A first component (10), the first component (10) being connected to one of the two adjacent levers (3); The second component (14) is connected to the other of the two adjacent levers (3) and can generate an induction signal when the first component (10) and the second component (14) move relative to each other.

9. The outer diameter detection device according to claim 8, characterized in that: The first component (10) and the second component (14) are a coil and a magnetic core respectively.

10. The outer diameter detection device according to claim 1, wherein: It also includes a limit block (5) located between two adjacent levers (3); In a state where no external force is applied, the lever (3) is in limiting contact with the limiting block (5) under the action of the first elastic supporting force of the first elastic component (11) and the second elastic supporting force of the second elastic component (17).

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