Lever type measuring tool for measuring coaxiality of stepped holes

Abstract

A lever type measuring tool for measuring the coaxiality of stepped holes, comprising a support (100); a rocker (200), the rocker (200) being arranged on the support (100), a rod body of the rocker (200) being hinged to the support (100), one end of the rocker (200) being provided with a testing rod (210), one end of the testing rod (210) being connected to the rocker (200), and the other end of the testing rod extending away from the rocker (200); and a display instrument (300), the display instrument (300) being arranged on the support (100), and a probe of the display instrument (300) being connected to the end of the rocker (200) distant from the testing rod (210).

Description

A lever-type inspection tool for detecting the coaxiality of stepped holes Technical Field

[0001] The present application relates to the technical field of detection tools, and in particular to a lever-type detection tool for detecting the coaxiality of a stepped hole. Background Art

[0002] In production, when workers need to perform quality inspection on workpieces with stepped holes, that is, when they need to check whether the stepped holes on the workpieces are coaxial, when faced with the need to inspect the same series of workpieces, each time they inspect a workpiece, they need to recalibrate the reference and inspection tools before performing measurement inspection, resulting in low inspection efficiency.

[0003] Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a lever-type inspection tool for detecting the coaxiality of stepped holes, which can improve the inspection efficiency and reduce the labor intensity of workers.

[0005] According to an embodiment of the present application, a lever-type inspection tool for detecting the coaxiality of a stepped hole includes:

[0006] Support;

[0007] A rocker is provided on the support, the rod body of the rocker is hinged to the support, one end of the rocker is provided with a detection rod, one end of the detection rod is connected to the rocker, and the other end extends away from the rocker;

[0008] The display instrument is arranged on the support, and the probe of the display instrument is connected to the end of the rocker away from the detection rod.

[0009] According to an embodiment of the present application, a lever-type inspection fixture for inspecting the coaxiality of stepped holes has at least the following beneficial effects: when a worker needs to inspect the coaxiality of the stepped holes of a product from the same series, the worker first uses a qualified standard part for benchmark calibration, and then inspects the product to be inspected after calibration. The inspection principle is as follows: the worker places the support into the first hole position of the stepped hole, and the detection rod on the rocker extends into the second hole position located below the first hole position. The worker then swings the rocker so that the end of the detection rod can abut the inner wall of the second hole position. The worker can also rotate the support to perform multi-point inspection on the second hole position. If the degree on the display instrument does not change, the inspected product is qualified. Conversely, if the degree on the display instrument changes, the inspected product is defective. Moreover, after comprehensively analyzing the data obtained from the inspection, the worker can determine the extent of the coaxial deviation of the stepped hole. The inspection fixture has a simple overall structure and is easy to inspect, which can effectively improve the inspection efficiency of workers and reduce their labor intensity.

[0010] According to an embodiment of the present application, a lever-type inspection fixture for checking the coaxiality of stepped holes comprises a rocker arm comprising a first connecting rod and a second connecting rod. One end of the first connecting rod is detachably connected to one end of the second connecting rod. A probe of a display instrument is connected to the end of the first connecting rod closest to the second connecting rod, and a probe rod is mounted on the other end of the first connecting rod. Specifically, the rocker arm is a split structure, making it easy for workers to replace the second connecting rod of different lengths to accommodate products with varying hole depths, thereby improving the versatility of the inspection fixture.

[0011] According to an embodiment of the present application, a lever-type inspection fixture for detecting the coaxiality of stepped holes has a central axis disposed on a support, and a first connecting rod is hingedly connected to the central axis. The central axis serves as the fulcrum for the first connecting rod's rotation and prevents the first connecting rod from swaying on the support, thereby ensuring detection accuracy.

[0012] According to an embodiment of the present application, a lever-type inspection fixture for detecting the coaxiality of a stepped hole, the first connecting rod includes an upper connecting rod and a lower connecting rod, the upper connecting rod and the lower connecting rod are connected by a rotating member, the ends of the upper connecting rod and the lower connecting rod are fixedly connected to the outer wall of the rotating member, and the central axis passes through the rotating member.

[0013] According to an embodiment of the present application, a lever-type inspection fixture for detecting the coaxiality of a stepped hole comprises a rotating part including an inner sleeve, an outer sleeve sleeve mounted on the inner sleeve, and a plurality of balls embedded in the inner wall of the inner sleeve. The balls are connected to the outer wall of the central shaft, which can help reduce the friction between the rotating part and the central shaft. On the one hand, it can extend the service life of the central shaft and the first connecting rod, and on the other hand, it can effectively reduce the noise of the first connecting rod when it swings.

[0014] According to an embodiment of the present application, a lever-type inspection fixture for detecting the coaxiality of a stepped hole is provided with an annular groove on the inner wall of the inner sleeve, and multiple balls are installed in the annular groove. Part of the volume of the balls is exposed from the notch of the annular groove, and the outer wall of the central shaft is connected to the outer wall of the balls exposed from the notch.

[0015] According to an embodiment of the present application, a lever-type inspection tool for detecting the coaxiality of stepped holes includes a support including a mounting base and a limit block disposed at the bottom of the mounting base. The mounting base and the limit block are both hollow internally. The central axis and the rocker are disposed within the inner cavity of the mounting base. The two ends of the central axis are connected to the inner wall of the mounting shaft. One end of the rocker extends outside the mounting base, and the other end of the rocker extends outside the limit block. The display instrument is mounted on the outer wall of the mounting base and away from the limit block. The probe of the display instrument passes through the mounting base and is connected to the rocker. The limit block and the mounting base are detachable. When a worker needs to inspect products with different hole depths and diameters, the worker can replace the applicable limit block of the corresponding diameter and height according to the actual situation of the product, and replace the corresponding applicable rocker, effectively improving the versatility of the inspection tool.

[0016] According to a lever-type inspection tool for detecting the coaxiality of a stepped hole according to an embodiment of the present application, a reset assembly is provided at the end of the mounting base close to the display instrument, and the end of the rocker is connected to the reset assembly.

[0017] According to an embodiment of the present application, a lever-type inspection fixture for checking the coaxiality of stepped holes comprises a reset assembly comprising a mounting bracket, a support rod mounted on the mounting bracket, and a reset spring sleeved on the support rod. One end of the support rod is fixed to the mounting bracket, and the other end is connected to the end of a rocker arm. The rocker arm faces the wall of the bracket and abuts the end of the reset spring. When a worker completes a quality inspection of a product and resets the spring, the rocker arm automatically returns to its original position, eliminating the need for manual reset by the worker. The structure is simple and practical.

[0018] According to an embodiment of the present application, a lever-type inspection tool for detecting the coaxiality of a stepped hole is provided on the main body of the mounting seat. The two mounting holes are mirror-imaged, and the two ends of the central axis are respectively connected to the mounting holes and extend to the outside of the mounting seat. It should be noted that the diameter of the mounting hole is larger than the diameter of the central axis so that the central axis can be inserted into the mounting hole. When a worker needs to replace the rocker arm, the worker only needs to pull out the central axis and disassemble the first connecting rod and the second connecting rod. Furthermore, in order to prevent the central axis from detaching from the mounting seat, an anti-detachment block is provided on the end of the central axis extending to the outside of the mounting seat to prevent the central axis from detaching from the mounting seat during use of the inspection tool.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] FIG1 is a schematic structural diagram of a lever-type inspection tool for detecting the coaxiality of a stepped hole according to an embodiment of the present application;

[0022] FIG2 is a first cross-sectional view of a lever-type inspection tool for inspecting the coaxiality of a stepped hole according to an embodiment of the present application;

[0023] FIG3 is a second cross-sectional view of a lever-type inspection tool for inspecting the coaxiality of a stepped hole according to an embodiment of the present application.

[0024] Description of reference numerals:

[0025] Support 100; central axis 110; anti-drop block 111; mounting seat 120; mounting hole 121; limit block 130;

[0026] Rocker 200; detection rod 210; first connecting rod 220; upper connecting rod 221; lower connecting rod 222; second connecting rod 230; rotating member 240; inner sleeve 241; annular groove 2411; outer sleeve 242; ball bearing 243;

[0027] Display instrument 300;

[0028] Reset assembly 400; mounting bracket 410; support rod 420; reset spring 430; fixing ring 440;

[0029] Product 500. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0031] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0032] In the description of an application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed to indicate or imply relative importance, or to implicitly specify the number or order of the technical features indicated.

[0033] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0034] 1 to 3 , an embodiment of the present application provides a lever-type inspection fixture for inspecting the coaxiality of stepped holes, comprising a support 100; a rocker 200, which is mounted on the support 100 and hingedly connected to the support 100; a probe rod 210 disposed at one end of the rocker 200, one end of the probe rod 210 being connected to the rocker 200 and the other end extending away from the rocker 200; and a display instrument 300, which is mounted on the support 100 and has a probe connected to the end of the rocker 200 remote from the probe rod 210. When a worker needs to inspect the coaxiality of stepped holes on products from the same series, the worker first performs a benchmark calibration using a qualified standard part, and then inspects the products to be inspected after calibration. The detection principle is as follows: the worker places the support 100 into the first hole position of the stepped hole, and the detection rod 210 on the rocker 200 extends into the second hole position located below the first hole position. Then, the worker swings the rocker 200 so that the end of the detection rod 210 can abut the inner wall of the second hole position. The worker can also rotate the support 100 to perform multi-point detection on the second hole position. If the degree on the display meter 300 does not change, the product being tested is qualified. Conversely, if the degree on the display meter 300 changes, the product being tested is defective. Moreover, after comprehensively analyzing the test data, the worker can determine the coaxial deviation of the stepped hole. This inspection tool has a simple overall structure and convenient detection, which can effectively improve the worker's detection efficiency and reduce the worker's labor intensity.

[0035] According to some embodiments of the present application, the rocker 200 includes a first connecting rod 220 and a second connecting rod 230. One end of the first connecting rod 220 is detachably connected to one end of the second connecting rod 230. The probe of the display instrument 300 is connected to the end of the first connecting rod 220 near the second connecting rod 230, and the detection rod 210 is mounted on the other end of the first connecting rod 220. Specifically, the rocker 200 has a split structure, which allows workers to easily replace the second connecting rod 230 of different lengths to accommodate products with different hole depths, thereby improving the versatility of the inspection tool.

[0036] Furthermore, a central axis 110 is provided on the support 100, and the rod body of the first connecting rod 220 is hinged to the central axis 110. The central axis 110 is the fulcrum for the rotation of the first connecting rod 220, and can prevent the first connecting rod 220 from shaking freely on the support 100, which helps to ensure the accuracy of the detection.

[0037] 2 , the first connecting rod 220 includes an upper connecting rod 221 and a lower connecting rod 222. The upper connecting rod 221 and the lower connecting rod 222 are connected by a rotating member 240. The ends of the upper connecting rod 221 and the lower connecting rod 222 are fixedly connected to the outer wall of the rotating member 240. The central shaft 110 passes through the rotating member 240. After the rod body of the central shaft 110 passes through the rotating member 240, the two ends of the central shaft 110 are connected to the mounting seat 120. Specifically, the rotating member 240 includes an inner sleeve 241, an outer sleeve 242 that is sleeved on the inner sleeve 241, and a plurality of balls 243 embedded in the inner wall of the inner sleeve 241. The balls 243 are connected to the outer wall of the central shaft 110, which can help reduce friction between the rotating member 240 and the central shaft 110. On the one hand, this can extend the service life of the central shaft 110 and the first connecting rod 220, and on the other hand, it can effectively reduce the noise generated by the first connecting rod 220 when it swings. It should be noted that the inner wall of the inner sleeve 241 is provided with an annular groove 2411, and multiple balls 243 are installed in the annular groove 2411. Part of the volume of the balls 243 is exposed from the notch of the annular groove 2411, and the outer wall of the central axis 110 is connected to the outer wall of the balls 243 exposed from the notch.

[0038] According to some embodiments of the present application, the support 100 includes a mounting base 120 and a stopper 130 disposed at the bottom of the mounting base 120. The mounting base 120 and the stopper 130 are both hollow. The central axis 110 and the rocker 200 are disposed within the inner cavity of the mounting base 120. Both ends of the central axis 110 are connected to the inner wall of the mounting shaft. One end of the rocker 200 extends outside the mounting base 120, while the other end of the rocker 200 extends outside the stopper 130. The display instrument 300 is mounted on the outer wall of the mounting base 120 and away from the stopper 130. The probe of the display instrument 300 passes through the mounting base 120 and is connected to the rocker 200. The stopper 130 and the mounting base 120 are detachable. When a worker needs to inspect products with different hole depths and diameters, he or she can replace the stopper 130 and the rocker 200 with the appropriate diameter and height, effectively improving the versatility of the inspection tool.

[0039] According to some embodiments of the present application, a reset assembly 400 is provided at the end of the mounting base 120 near the display instrument 300, and the end of the rocker 200 is connected to the reset assembly 400. Specifically, as shown in Figure 1, the reset assembly 400 includes a mounting bracket 410, a support rod 420 mounted on the mounting bracket 410, and a reset spring 430 sleeved on the support rod 420. One end of the support rod 420 is fixed to the mounting bracket 410, and the other end is connected to the end of the rocker 200. The rocker 200 faces the wall of the bracket and abuts the end of the reset spring 430. When a worker completes a product quality inspection, the reset spring 430 resets the rocker 200 automatically to its original position, eliminating the need for manual reset by the worker. This simple and practical structure provides a practical and user-friendly design. Furthermore, a retaining ring 440 is provided at the end of the support rod 420. The retaining ring 440 is located on the side of the second connecting rod 230 near the end of the support rod 420 to prevent the second connecting rod 230 from detaching from the support rod 420.

[0040] According to some embodiments of the present application, two mounting holes 121 are provided on the body of the mounting seat 120, and the two mounting holes 121 are mirror-imaged, and the two ends of the central axis 110 are respectively connected to the mounting holes 121 and extend to the outside of the mounting seat 120. It should be noted that the diameter of the mounting hole 121 is larger than the diameter of the central axis 110 so that the central axis 110 can be inserted into the mounting hole 121. When a worker needs to replace the rocker 200, the worker only needs to pull out the central axis 110 and disassemble the first connecting rod 220 and the second connecting rod 230. Furthermore, in order to prevent the central axis 110 from detaching from the mounting seat 120, an anti-detachment block 111 is provided on the end of the central axis 110 extending to the outside of the mount to prevent the central axis 110 from detaching from the mounting seat 120 during use of the inspection tool.

[0041] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A lever-type inspection tool for detecting the coaxiality of a stepped hole, characterized in that: include: Support; A rocker, wherein the rocker is arranged on the support, a rod body of the rocker is hinged to the support, a detection rod is arranged at one end of the rocker, one end of the detection rod is connected to the rocker, and the other end extends away from the rocker; A display instrument is arranged on the support, and a probe of the display instrument is connected to an end of the rocker away from the detection rod.

2. A lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 1, characterized in that: The rocker includes a first connecting rod and a second connecting rod, one end of the first connecting rod is detachably connected to one end of the second connecting rod, the probe of the display instrument is connected to one end of the first connecting rod close to the second connecting rod, and the detection rod is installed on the other end of the first connecting rod.

3. A lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 2, characterized in that: The support is provided with a central axis, and the rod body of the first connecting rod is hinged to the central axis.

4. A lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 3, characterized in that: The first connecting rod includes an upper connecting rod and a lower connecting rod, the upper connecting rod and the lower connecting rod are connected by a rotating member, the ends of the upper connecting rod and the lower connecting rod are fixedly connected to the outer wall of the rotating member, and the central axis passes through the rotating member.

5. A lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 4, characterized in that: The rotating member comprises an inner sleeve, an outer sleeve sleeved on the inner sleeve and a plurality of balls embedded on the inner wall of the inner sleeve, wherein the balls are connected to the outer wall of the central shaft.

6. A lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 5, characterized in that: The inner wall of the inner sleeve is provided with an annular groove, a plurality of the balls are installed in the annular groove, a part of the volume of the balls is exposed from the notch of the annular groove, and the outer wall of the central shaft is connected to the outer wall of the balls exposed from the notch.

7. The lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 3, characterized in that: The support includes a mounting seat and a limit block arranged at the bottom of the mounting seat, the mounting seat and the limit block are both hollow inside, the central axis and the rocker are arranged in the inner cavity of the mounting seat, the two ends of the central axis are connected to the inner wall of the mounting seat, one end of the rocker extends out of the mounting seat, and the other end of the rocker extends out of the limit block, the display instrument is installed on the outer wall of the mounting seat and away from the limit block, and the probe of the display instrument passes through the mounting seat and is connected to the rocker.

8. The lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 7, characterized in that: A reset component is arranged at the end of the mounting seat close to the display instrument, and the end of the rocker is connected to the reset component.

9. A lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 8, characterized in that: The reset assembly includes a mounting bracket, a support rod mounted on the mounting bracket, and a reset spring sleeved on the support rod. One end of the support rod is fixed to the mounting bracket, and the other end is connected to the end of the rocker arm. The rocker arm abuts against the end of the reset spring facing the wall of the bracket.

10. The lever-type inspection tool for detecting the coaxiality of a stepped hole according to claim 7, characterized in that: The main body of the mounting seat is provided with two mounting holes, which are mirror-imaged, and the two ends of the central axis are respectively connected to the mounting holes and extend to the outside of the mounting seat.

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