An outer diameter detection device

Abstract

This application discloses an outer diameter detection device, including a housing, a fixed bracket fixedly connected inside the housing, and two measuring rods respectively connected to the fixed bracket via elastic members. Each measuring rod is connected to an adjusting member between itself and the fixed bracket. Each measuring rod is connected to a corresponding sensing element. A detection probe is connected to the end of each measuring rod furthest from the fixed bracket. The detection probe measures the outer diameter of the shaft-like object to be measured, and is connected to the sensing element. The adjusting member adjusts the relative tension between the two measuring rods and the fixed bracket, thereby adjusting the clamping force between the two measuring rods, allowing the detection probe to perform measurements more stably. The sensing element then detects changes in the distance between the detection probes to obtain the outer diameter measurement result, improving the accuracy of the measurement.

Description

Technical Field

[0001] This application relates to the field of dimensional inspection technology, and more specifically, to an outer diameter inspection device. Background Technology

[0002] In the prior art, the outer diameter measuring device is clamped to the body of the object to be measured by the action of an internal elastic element. However, the current outer diameter measuring device has poor stability during the clamping and measurement process, resulting in poor accuracy of the measurement results.

[0003] In summary, improving the measurement stability of outer diameter measuring devices to enhance measurement accuracy is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an outer diameter measuring device that improves the measurement stability of the outer diameter measuring device, thereby improving the measurement accuracy.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An outer diameter detection device includes: a housing; a fixed bracket fixedly connected to the interior of the housing; two measuring rods, each connected to the fixed bracket via an elastic element, and each measuring rod is connected to the fixed bracket via an adjusting element; the two measuring rods are connected to corresponding sensing elements, and each end of the two measuring rods away from the fixed bracket is connected to a detection probe, the detection probe being used to measure the outer diameter of the object to be measured, and the detection probe being connected to the sensing element.

[0007] In some embodiments, the measuring rod includes a first measuring rod and a second measuring rod; a first end of the first measuring rod is connected to the fixed bracket via a first leaf spring, and a first end of the second measuring rod is connected to the fixed bracket via a second leaf spring; the second ends of both the first and second measuring rods extend out of the housing; the first and second measuring rods are sequentially distributed along a first direction, and both extend along a second direction; the first and second directions are perpendicular to each other.

[0008] In some embodiments, the first end of the first leaf spring is fixedly connected to the fixed bracket via a first leaf spring clamping block, and the second end of the first leaf spring is fixedly connected to the first measuring rod via a second leaf spring clamping block, wherein the first leaf spring clamping block and the first measuring rod are located on the same side of the first leaf spring; the first end of the second leaf spring is fixedly connected to the fixed bracket via a third leaf spring clamping block, and the second end of the second leaf spring is fixedly connected to the second measuring rod via a fourth leaf spring clamping block, wherein the third leaf spring clamping block and the second measuring rod are located on the same side of the second leaf spring.

[0009] In some embodiments, the length directions of both the first leaf spring and the second leaf spring extend along the second direction, so that both the first leaf spring and the second leaf spring can deform in the first direction.

[0010] In some embodiments, the fixed bracket is fixedly connected to a first connecting beam and a second connecting beam, the first connecting beam and the second connecting beam being sequentially distributed along the first direction, and both the first connecting beam and the second connecting beam extending along the second direction; the adjusting member includes a first adjusting member and a second adjusting member; the first adjusting member is movably connected to the first measuring rod so that the first adjusting member can move along the first direction, and the first adjusting member is connected to the first connecting beam via a first tension spring; the second adjusting member is movably connected to the second measuring rod so that the second adjusting member can move along the first direction, and the second adjusting member is connected to the second connecting beam via a second tension spring.

[0011] In some embodiments, both the first adjusting member and the second adjusting member are threaded members, the threaded members are threadedly engaged with the first measuring rod and the second measuring rod, and the threaded members are rotatably engaged with the first tension spring and the second tension spring.

[0012] In some embodiments, the sensing element includes a first sensing element and a second sensing element; the first sensing element is fixedly connected to the first measuring rod, the second sensing element is fixedly connected to the second measuring rod, the first sensing element and the second sensing element are distributed sequentially along the first direction, and the first sensing element and the second sensing element are close to the second end of the measuring rod; the fixed bracket, the adjusting element, and the sensing element are distributed sequentially along the second direction.

[0013] In some embodiments, the first sensing element has an induction coil, and the second sensing element has an induction magnetic core.

[0014] In some embodiments, a limiting block is provided on the inner wall of the housing, and the limiting block is fixedly connected to the housing by a limiting fastener; the limiting block is located between the first measuring rod and the second measuring rod, and the limiting block abuts against the first measuring rod and the second measuring rod, and the limiting block is used to limit the distance that the first measuring rod and the second measuring rod move relative to each other along the first direction.

[0015] In some embodiments, a cable retainer is connected to the outside of the housing, and the cable retainer is located on the end of the housing away from the measuring rod.

[0016] The outer diameter measuring device provided in this application includes a housing, a fixed bracket fixedly connected inside the housing, and two measuring rods respectively connected to the fixed bracket via elastic elements. Adjusting elements are connected between each measuring rod and the fixed bracket. Corresponding sensing elements are connected to each measuring rod. A detection probe is connected to the end of each measuring rod furthest from the fixed bracket. The detection probe measures the outer diameter of the shaft-like object to be measured, and is connected to the sensing element. The relative tension between the two measuring rods and the fixed bracket is adjusted by the adjusting elements to regulate the clamping force between the two measuring rods, thereby enabling the detection probe to perform measurements more stably. The change in distance between the detection probes is then sensed by the sensing element to obtain the outer diameter measurement result, thus improving the accuracy of the measurement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the outer diameter detection device provided in the embodiments of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Outer shell, 2-Fixed bracket, 201-First connecting beam, 202-Second connecting beam, 3-First measuring rod, 4-Second measuring rod, 5-First leaf spring, 6-Second leaf spring, 7-First leaf spring pressure block, 8-Second leaf spring pressure block, 9-Third leaf spring pressure block, 10-Fourth leaf spring pressure block, 11-First adjusting component, 12-Second adjusting component, 13-First tension spring, 14-Second tension spring, 15-First sensing component, 16-Second sensing component, 17-Limiting block, 18-Limiting fixing component, 19-Cable fixing component. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise.

[0023] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0024] In this application, "multiple" refers to two or more embodiments. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order.

[0025] The terms "parallel" and "perpendicular" used in this application refer to "basically parallel" and "basically perpendicular" in practical operation. "Basically parallel" can be understood as parallelism with a certain degree of error, and similarly, "basically perpendicular" can be understood as perpendicularity with a certain degree of error.

[0026] like Figure 1As shown in the embodiment of this application, the outer diameter detection device includes a housing 1, a fixed bracket 2, and two measuring rods. The fixed bracket 2 is fixedly connected to the inside of the housing 1. The two measuring rods are respectively connected to the fixed bracket 2 through elastic elements, and an adjusting element is connected between each measuring rod and the fixed bracket 2. Corresponding sensing elements are connected to the two measuring rods. A detection probe is connected to the end of each measuring rod away from the fixed bracket 2. The detection probe is used to measure the outer diameter of the shaft to be measured. The detection probe is connected to the sensing element. In this way, the relative tension between the two measuring rods and the fixed bracket 2 is adjusted by the adjusting element to adjust the clamping force between the two measuring rods, so that the detection probe can perform measurement more stably. Then, the distance change between the detection probes is sensed by the sensing element to obtain the measurement result of the outer diameter, thereby improving the measurement accuracy.

[0027] It should be noted that the detection probe (not shown in the figure) is a sensing element that can contact the outer circular surface of the shaft to be detected, sense its diameter, and drive the distance between the two measuring rods to change in order to achieve size detection. The detection probe is a conventional device in this field and will not be described in detail here.

[0028] like Figure 1 As shown, the measuring rod includes a first measuring rod 3 and a second measuring rod 4; wherein, the first end of the first measuring rod 3 is connected to the fixed bracket 2 through a first leaf spring 5, and the first end of the second measuring rod 4 is connected to the fixed bracket 2 through a second leaf spring 6, and the second ends of the first measuring rod 3 and the second measuring rod 4 both extend out of the outer shell 1 so that the extended parts can be connected to the detection probe. The first measuring rod 3 and the second measuring rod 4 are distributed sequentially on both sides of the fixed bracket 2 along a first direction, and the first measuring rod 3 and the second measuring rod 4 both extend along a second direction so that the relative distance between the first measuring rod 3 and the second measuring rod 4 can change along the first direction, thereby driving the detection probe to perform outer diameter detection.

[0029] It should be noted that the first direction and the second direction are set perpendicularly to ensure the direction of distance change between the first measuring rod 3 and the second measuring rod 4, thereby improving the accuracy of the measurement.

[0030] like Figure 1 As shown, the length direction of the first leaf spring 5 and the second leaf spring 6 both extend along the second direction, so that the first leaf spring 5 and the second leaf spring 6 can both deform in the first direction, so that the first measuring rod 3 and the second measuring rod 4 can be displaced along the first direction, and the rigidity of the deformation process is improved by the first leaf spring 5 and the second leaf spring 6, so as to improve the stability of the first measuring rod 3 and the second measuring rod 4 in driving the detection probe to clamp the outer diameter of the object to be measured.

[0031] like Figure 1As shown, the first end of the first leaf spring 5 is fixedly connected to the fixed bracket 2 through the first leaf spring pressure block 7, so that the first leaf spring 5 is fixed between the first leaf spring pressure block 7 and the fixed bracket 2. The second end of the first leaf spring 5 is fixedly connected to the first measuring rod 3 through the second leaf spring pressure block 8, so that the first measuring rod 3 is fixed to the second end of the first leaf spring 5. Under the action of the elastic force of the first leaf spring 5, the first measuring rod 3 can move and clamp. The first leaf spring pressure block 7 and the first measuring rod 3 are located on the same side of the first leaf spring 5.

[0032] The first end of the second leaf spring 6 is fixedly connected to the fixed bracket 2 through the third leaf spring pressure block 9, so that the second leaf spring 6 is fixed between the third leaf spring pressure block 9 and the fixed bracket 2. The second end of the second leaf spring 6 is fixedly connected to the second measuring rod 4 through the fourth leaf spring pressure block 10, so that the second measuring rod 4 is fixed to the second end of the second leaf spring 6. Under the action of the elastic force of the second leaf spring 6, the movement and clamping operation of the second measuring rod 4 are realized, and the third leaf spring pressure block 9 and the second measuring rod 4 are located on the same side of the second leaf spring 6.

[0033] like Figure 1 As shown, the fixed bracket 2 is fixedly connected with a first connecting beam 201 and a second connecting beam 202. The first connecting beam 201 and the second connecting beam 202 are distributed sequentially along a first direction, and the length directions of the first connecting beam 201 and the second connecting beam 202 both extend along a second direction.

[0034] The adjustment mechanism includes a first adjustment component 11 and a second adjustment component 12. The first adjustment component 11 is movably connected to the first measuring rod 3 so that the first adjustment component 11 can move along a first direction. The first adjustment component 11 is connected to the first connecting beam 201 through a first tension spring 13 so that the first adjustment component 11 can adjust the initial tension of the first tension spring 13 to adjust the clamping force between the first measuring rod 3 and the outer circular surface of the object to be measured, thereby improving the stability of the detection process of the detection probe and improving the measurement accuracy.

[0035] The second adjusting member 12 is movably connected to the second measuring rod 4 so that the second adjusting member 12 can move along the first direction. The second adjusting member 12 is connected to the second connecting beam 202 through the second tension spring 14 so that the second adjusting member 12 can adjust the initial tension of the second tension spring 14 to adjust the clamping force between the second measuring rod 4 and the outer circular surface of the object to be measured, thereby improving the stability of the detection probe during the detection process and improving the measurement accuracy.

[0036] In some embodiments, both the first adjusting member 11 and the second adjusting member 12 are threaded members. The threaded members are threadedly engaged with the first measuring rod 3 and the second measuring rod 4. The threaded members are also rotatably engaged with the first tension spring 13 and the second tension spring 14 through rotating blocks. In this way, the rotating threaded members achieve axial movement of the first adjusting member 11 and the second adjusting member 12 through the threaded engagement with the first measuring rod 3 and the second measuring rod 4, so as to pull or squeeze the first tension spring 13 or the second tension spring 14, thereby adjusting the clamping force between the first measuring rod 3 and the second measuring rod 4 and the outer circular surface of the detection probe and the object to be measured, thereby improving the stability of the detection probe during the detection process and improving the measurement accuracy.

[0037] like Figure 1 As shown, the sensing element includes a first sensing element 15 and a second sensing element 16. The first sensing element 15 is fixedly connected to the first measuring rod 3, and the second sensing element 16 is fixedly connected to the second measuring rod 4. The first sensing element 15 and the second sensing element 16 are distributed sequentially along a first direction, and the first sensing element 15 and the second sensing element 16 are close to the second ends of the first measuring rod 3 and the second measuring rod 4. The fixed bracket 2, the adjusting element, and the sensing element are distributed sequentially along a second direction, so that the first sensing element 15 and the second sensing element 16 are closer to the detection probe, so that the communication transmission distance between the detection probe and the first sensing element 15 and the second sensing element 16 is shorter, thereby further improving the detection accuracy.

[0038] In some embodiments, the first sensing element 15 has an induction coil, and the second sensing element 16 has an induction magnetic core located inside the induction coil. When the distance between the first measuring rod 3 and the second measuring rod 4 changes, the first sensing element 15 and the second sensing element 16 move synchronously to change the relative distance between the induction magnetic core and the induction coil, thereby realizing the detection of the outer diameter of the object to be measured.

[0039] It should be noted that the induction core and the induction coil are in a gap fit, which will not interfere with the relative displacement between the first measuring rod 3 and the second measuring rod 4, so as to ensure that the detection operation can be carried out normally.

[0040] like Figure 1 As shown, a limiting block 17 is provided on the inner wall of the outer shell 1, and the limiting block 17 is fixedly connected to the inner wall of the outer shell 1 by a limiting fastener 18.

[0041] The limiting block 17 is located between the first measuring rod 3 and the second measuring rod 4, and the limiting block 17 can abut against the first measuring rod 3 and the second measuring rod 4 so that the limiting block 17 can limit the distance that the first measuring rod 3 and the second measuring rod 4 move inward relative to each other in the first direction, so as to reduce excessive inward compression of the first leaf spring 5 and the second leaf spring 6 and extend their service life.

[0042] like Figure 1As shown, a cable fixing member 19 is connected to the outside of the housing 1, and the cable fixing member 19 is located on the side of the housing 1 away from the second end of the first measuring rod 3 and the second measuring rod 4. The cable is connected through the cable fixing member 19 to realize the transmission of detection signals.

[0043] In use, the outer diameter detection device provided in this application embodiment connects a detection probe to the second end of the first measuring rod 3 and the second measuring rod 4, respectively. By pulling the first measuring rod 3 and the second measuring rod 4, the detection probe comes into contact with the outer circular surface of the shaft to be measured. The relative displacement of the first measuring rod 3 and the second measuring rod 4 drives the relative displacement of the first sensing element 15 and the second sensing element 16. Through the displacement change between the induction coil and the induction core, the outer diameter is detected. The tension of the first tension spring 13 and the second tension spring 14 is adjusted by adjusting the first adjusting element 11 and the second adjusting element 12, so that the first measuring rod 3 and the second measuring rod 4 drive the detection probe to stably clamp the object to be measured, thereby improving the measurement accuracy.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An outer diameter detecting device characterized by comprising: include: Outer shell (1); A fixed bracket (2) is fixedly connected to the inside of the outer shell (1); The measuring rod consists of two measuring rods, each connected to the fixed bracket (2) via an elastic element, and each measuring rod is connected to the fixed bracket (2) via an adjusting element. The two measuring rods are connected to corresponding sensing elements. The ends of the two measuring rods away from the fixed bracket (2) are each connected to a detection probe. The detection probe is used to measure the outer diameter of the object to be measured, and the detection probe is connected to the sensing element.

2. The outer diameter detection device according to claim 1, characterized in that, The measuring rod includes a first measuring rod (3) and a second measuring rod (4); The first end of the first measuring rod (3) is connected to the fixed bracket (2) via the first leaf spring (5), and the first end of the second measuring rod (4) is connected to the fixed bracket (2) via the second leaf spring (6). The second end of the first measuring rod (3) and the second end of the second measuring rod (4) both extend out of the outer casing (1); The first measuring rod (3) and the second measuring rod (4) are distributed sequentially along the first direction, and both the first measuring rod (3) and the second measuring rod (4) extend along the second direction; The first direction and the second direction are perpendicular.

3. The outer diameter detection device according to claim 2, characterized in that, The first end of the first leaf spring (5) is fixedly connected to the fixed bracket (2) through the first leaf spring pressure block (7), and the second end of the first leaf spring (5) is fixedly connected to the first measuring rod (3) through the second leaf spring pressure block (8). The first leaf spring pressure block (7) and the first measuring rod (3) are located on the same side of the first leaf spring (5). The first end of the second leaf spring (6) is fixedly connected to the fixed bracket (2) through the third leaf spring pressure block (9), and the second end of the second leaf spring (6) is fixedly connected to the second measuring rod (4) through the fourth leaf spring pressure block (10). The third leaf spring pressure block (9) and the second measuring rod (4) are located on the same side of the second leaf spring (6).

4. The outer diameter detection device according to claim 2, characterized in that, The length direction of the first leaf spring (5) and the second leaf spring (6) both extend along the second direction, so that the first leaf spring (5) and the second leaf spring (6) can both deform in the first direction.

5. The outer diameter detection device according to claim 2, characterized in that, The fixed bracket (2) is fixedly connected with a first connecting beam (201) and a second connecting beam (202). The first connecting beam (201) and the second connecting beam (202) are distributed sequentially along the first direction, and both the first connecting beam (201) and the second connecting beam (202) extend along the second direction. The adjusting member includes a first adjusting member (11) and a second adjusting member (12); The first adjusting member (11) is movably connected to the first measuring rod (3) so that the first adjusting member (11) can move along the first direction. The first adjusting member (11) is connected to the first connecting beam (201) through the first tension spring (13). The second adjusting member (12) is movably connected to the second measuring rod (4) so ​​that the second adjusting member (12) can move along the first direction. The second adjusting member (12) is connected to the second connecting beam (202) through the second tension spring (14).

6. The outer diameter detection device according to claim 5, characterized in that, Both the first adjusting member (11) and the second adjusting member (12) are threaded members. The threaded members are threadedly engaged with the first measuring rod (3) and the second measuring rod (4), and the threaded members are rotatably engaged with the first tension spring (13) and the second tension spring (14).

7. The outer diameter detection device according to claim 2, characterized in that, The sensing element includes a first sensing element (15) and a second sensing element (16). The first sensing element (15) is fixedly connected to the first measuring rod (3), and the second sensing element (16) is fixedly connected to the second measuring rod (4). The first sensing element (15) and the second sensing element (16) are distributed sequentially along the first direction, and the first sensing element (15) and the second sensing element (16) are close to the second end of the measuring rod. The fixed bracket (2), the adjusting component, and the sensing component are distributed sequentially along the second direction.

8. The outer diameter detection device according to claim 7, characterized in that, The first sensing element (15) has an induction coil, and the second sensing element (16) has an induction magnetic core.

9. The outer diameter detection device according to claim 2, characterized in that, The inner wall of the outer shell (1) is provided with a limiting block (17), and the limiting block (17) is fixedly connected to the outer shell (1) through a limiting fixing member (18); The limiting block (17) is located between the first measuring rod (3) and the second measuring rod (4). The limiting block (17) abuts against the first measuring rod (3) and the second measuring rod (4). The limiting block (17) is used to limit the distance that the first measuring rod (3) and the second measuring rod (4) move relative to each other along the first direction.

10. The outer diameter detection device according to any one of claims 1-9, characterized in that, The outer casing (1) is externally connected to a cable fastener (19), which is located on the outer casing (1) at the end away from the measuring rod.

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