A stud thread hole concentricity inspection tool

Abstract

This utility model relates to the field of dimensional measurement technology, specifically a stud thread hole concentricity inspection tool, including a guide shell. A slide rail is fixedly connected to the outer surface of the guide shell, and a sliding post is slidably connected to the upper surface of the guide shell. A rubber sliding sleeve is nested and slidably connected to the outer surface of the sliding post. In this utility model, the sliding post can drive the contact disc to the bottom of the thread hole. When the rubber sliding sleeve returns to the initial position, it indicates that the error of the thread hole is within the acceptable range. The stud is inserted into the opening at the lower end of the guide shell, making the stud, the inspection seat, and the contact disc concentric. Here, the size of the contact disc matches the thread hole. When the contact disc can contact the bottom of the hole, it indicates that the concentricity is within the acceptable range. This device can measure whether the stud and the thread hole match, and it can also measure whether the thread hole on the stud itself is concentric, thus improving the applicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of dimensional measurement technology, specifically a stud thread hole concentricity inspection tool. Background Technology

[0002] The inspection sleeve of the gauge is placed on the stud to be tested, and then the ball nut is loosened, so that the guide post drives the inspection rod below along the small diameter cavity to enter the thread hole of the corresponding stud for concentricity testing. Some technical solutions have also appeared in the prior art, such as the stud thread hole concentricity inspection gauge described in announcement number: CN219890355U. This stud thread hole concentricity inspection gauge includes: an inspection sleeve, the upper part of which is a small diameter cavity and the lower part of which is a large diameter cavity; a guide rod, which is slidably set in the small diameter cavity, and a ball nut is set at the end of the guide rod exposed above the inspection sleeve, and a limit mark line is also set at a preset position below the ball nut.

[0003] Although the above-mentioned device can detect the concentricity of the threaded holes on the stud, other factors need to be considered when connecting the stud to external threaded holes. For example, when connecting the stud to the flange, it is necessary to consider whether there are foreign objects in the flange threaded holes and whether the angles of each hole are consistent. The above-mentioned device cannot record the angle when measuring these, which has certain limitations. Utility Model Content

[0004] The purpose of this invention is to provide a stud thread hole concentricity inspection tool to solve the problems mentioned in the background art.

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

[0006] A stud thread hole concentricity inspection tool includes a guide shell, a slide rail fixedly connected to the outer surface of the guide shell, a sliding post embedded and slidably connected to the upper surface of the guide shell, and a rubber sliding sleeve nested and slidably connected to the outer surface of the sliding post.

[0007] An angle marking mechanism is provided on the outer surface of the guide housing. The angle marking mechanism includes a level, a slide, a locking bolt, and a connecting column. The level is fixedly connected to the outer surface of the guide housing near the slide rail. The slide is slidably connected to the outer surface of the slide rail. The locking bolt is threadedly connected to the side surface of the slide. The connecting column is rotatably embedded in and connected to the front surface of the slide. A pointer is fixedly connected to the outer surface of the connecting column.

[0008] A detection seat is fixedly connected to the lower surface of the sliding column, and a contact disc is threadedly connected to the lower end of the detection seat.

[0009] Furthermore, the sliding column has a through hole inside, and the sliding column and the detection seat are slidably connected to the through hole.

[0010] Furthermore, the outer surface of the guide housing is threadedly connected to a stud support structure, which includes a mounting bracket, a sliding column, a spring, and a support seat. The mounting bracket is threadedly connected to the outer surface of the guide housing, the sliding column is slidably embedded in the side surface of the mounting bracket, the spring is nested in the outer surface of the sliding column, and the support seat is fixedly connected to one end of the sliding column. A handle is fixedly connected to the upper surface of the support seat.

[0011] Furthermore, one end of the spring contacts the handle, and the other end of the spring contacts the mounting bracket.

[0012] Furthermore, the end of the slide is threaded with a nut.

[0013] Furthermore, a rubber cover is adhered to the outer surface of the guide housing, and a fastening bolt is threaded onto the rear surface of the guide housing.

[0014] Furthermore, the upper end of the sliding column is threaded with a spherical nut.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. When the device is tilted, the liquid surface of the level will tilt synchronously. At this time, manually rotate the pointer, and under the fixed friction force, the pointer and the liquid surface will be parallel. The degree of tilt of the device can be manually recorded. This is helpful for intuitively observing the angle difference of the threaded holes at different positions in the same area. Manually rotating the locking bolt will fix the slide on the slide rail under the push of the thread. This is helpful for adjusting the position of the pointer so that the pointer and the liquid surface coincide. The sliding column contacts the bottom of the threaded hole or the top of the stud through the detection seat contacting the disc and the stud. The height of the stud or the depth of the hole is recorded.

[0017] 2. The stud is placed on the upper surface of the support base, and the contact disc contacts the upper surface of the stud. Then, the rubber sliding sleeve rises, and the height of the stud is recorded. The stud is then removed, and the handle is pulled outward so that the contact disc is no longer obstructed by the support base. The cross-section of the contact disc is slightly smaller than the stud, but within the allowable error. At this point, the sliding sleeve can drive the contact disc to descend to the bottom of the threaded hole. When the rubber sliding sleeve returns to the initial position, it indicates that the error of the threaded hole is within the acceptable range. The stud is inserted into the opening at the lower end of the guide housing, making the stud, the detection base, and the contact disc concentric. Here, the size of the contact disc matches the threaded hole. When the contact disc can contact the bottom of the hole, it indicates that the concentricity is within the acceptable range. This device can measure whether the stud and the threaded hole match, and it can also measure whether the threaded hole on the stud itself is concentric, thus improving the applicability of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the guide shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of the angle marking mechanism of this utility model.

[0022] In the diagram: 1. Guide housing; 101. Rubber cover; 102. Fastening bolt; 103. Slide rail; 2. Rubber sliding sleeve; 3. Angle marking mechanism; 301. Level; 302. Slide seat; 303. Locking bolt; 304. Connecting column; 305. Pointer; 4. Sliding column; 401. Detection seat; 402. Ball nut; 403. Contact disc; 5. Stud support structure; 501. Mounting bracket; 502. Sliding column; 503. Spring; 504. Support seat; 505. Handle; 506. Nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 In this embodiment of the utility model, a stud thread hole concentricity inspection tool includes a guide shell 1, a slide rail 103 fixedly connected to the outer surface of the guide shell 1, a sliding post 4 embedded and slidably connected to the upper surface of the guide shell 1, and a rubber sliding sleeve 2 nested and slidably connected to the outer surface of the sliding post 4.

[0025] An angle marking mechanism 3 is provided on the outer surface of the guide housing 1. The angle marking mechanism 3 includes a level 301, a slide 302, a locking bolt 303, and a connecting post 304. The level 301 is fixedly connected to the outer surface of the guide housing 1 near the slide rail 103. The slide 302 is slidably connected to the outer surface of the slide rail 103. The locking bolt 303 is threadedly connected to the side surface of the slide 302. The connecting post 304 is embedded and rotatably connected to the front surface of the slide 302. A pointer 305 is fixedly connected to the outer surface of the connecting post 304.

[0026] A detection seat 401 is fixedly connected to the lower surface of the sliding column 4, and a contact disc 403 is threadedly connected to the lower end of the detection seat 401.

[0027] Specifically, the sliding column 4 can slide up and down inside the guide housing 1, and the rubber sliding sleeve 2 can slide on the outer surface of the sliding column 4. Therefore, the rubber sliding sleeve 2 can mark the sliding distance of the sliding column 4. When the device is tilted, the liquid surface of the level 301 will tilt synchronously. At this time, the pointer 305 is manually rotated, and under the fixation of friction, the pointer 305 is parallel to the liquid surface, so the tilt degree of the device can be manually recorded. This is beneficial for intuitively observing the angle difference of the threaded holes at different positions in the same area. The locking bolt 303 is manually rotated, and under the push of the thread, the slide 302 is fixed on the slide rail 103, which is beneficial for adjusting the position of the pointer 305 so that the pointer 305 coincides with the liquid surface. The sliding column 4 contacts the bottom of the threaded hole or the top of the stud through the detection seat 401 in cooperation with the contact disc 403, and records the height of the stud or the depth of the hole.

[0028] Example 1

[0029] like Figure 1-4 As shown, the sliding column 4 has a through hole inside, and the sliding column 4 and the detection seat 401 are slidably connected to the through hole. The outer surface of the guide housing 1 is threadedly connected to a stud support structure 5. The stud support structure 5 includes a mounting bracket 501, a sliding column 502, a spring 503, and a support seat 504. The mounting bracket 501 is threadedly connected to the outer surface of the guide housing 1. The sliding column 502 is embedded and slidably connected to the side surface of the mounting bracket 501. The spring 503 is nested and connected to the outer surface of the sliding column 502. The support seat 504 is fixedly connected to one end of the sliding column 502. A handle 505 is fixedly connected to the upper surface of the support seat 504.

[0030] In this embodiment, the initial position of the rubber sliding sleeve 2 is as follows: Figure 1 As shown, first place the stud on the upper surface of the support base 504, and then the contact disc 403 contacts the upper surface of the stud. Next, the rubber sliding sleeve 2 rises, and the height of the stud is recorded. Then, remove the stud and pull the handle 505 outwards, causing the contact disc 403 to lose the obstruction of the support base 504. The cross-section of the contact disc 403 is slightly smaller than the stud, but within the allowable error range. At this point, the sliding column 4 can drive the contact disc 403 to descend to the bottom of the threaded hole. When the rubber sliding sleeve 2 returns to its original position... Figure 1 The position indicates that the error of the threaded hole is within the acceptable range, and there are no protrusions or foreign objects on the inner surface that hinder the screw from being screwed in. When it is necessary to test the concentricity of the threaded hole on the screw, the screw is inserted into the opening at the lower end of the guide housing 1, so that the screw, the test seat 401 and the contact disc 403 are concentric. The size of the contact disc 403 matches the threaded hole. When the contact disc 403 can contact the bottom of the hole, it indicates that the concentricity is within the acceptable range. This allows the device to measure whether the screw and the threaded hole match, and also to measure whether the threaded hole on the screw itself is concentric.

[0031] like Figure 1-4As shown, one end of the spring 503 contacts the handle 505, the other end of the spring 503 contacts the mounting bracket 501, and the end of the slide column 502 is threaded with a nut 506.

[0032] In this embodiment, after releasing the hand, the handle 505 moves the sliding column 502 under the elastic force of the spring 503, causing the support base 504 to return to its original position. Figure 1 The nut 506 limits the sliding column 502 to prevent excessive displacement of the sliding column 502.

[0033] Example 2

[0034] Based on Embodiment 1, in order to overcome the problem that it is inconvenient to fix the sliding column 4 in Embodiment 1.

[0035] like Figure 1-4 As shown, a rubber cover 101 is bonded to the outer surface of the guide housing 1. The rubber cover 101 is used for anti-slip and to optimize the feel of the device. A fastening bolt 102 is threaded to the rear surface of the guide housing 1, and a ball nut 402 is threaded to the upper end of the sliding column 4.

[0036] In this embodiment, the fastening bolt 102 is tightened so that its front end presses against the outer wall of the sliding column 4, thereby locking the sliding column 4 and preventing it from extending or retracting when the device is moved. When measurement is required, it can be unlocked by simply loosening it in the opposite direction. The ball nut 402 limits the maximum descent position of the sliding column 4.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stud thread hole concentricity inspection tool, comprising a guide shell (1), wherein a slide rail (103) is fixedly connected to the outer surface of the guide shell (1), a sliding column (4) is embedded and slidably connected to the upper surface of the guide shell (1), and a rubber sliding sleeve (2) is nested and slidably connected to the outer surface of the sliding column (4). Its features are, An angle marking mechanism (3) is provided on the outer surface of the guide housing (1), the angle marking mechanism (3) comprising: A level (301) is fixedly connected to the outer surface of the guide housing (1) near the slide rail (103); The slide (302) is slidably connected to the outer surface of the slide rail (103); Locking bolt (303) is threaded onto the side surface of slide (302); A connecting post (304) is rotatably connected to the front surface of the slide block (302), and a pointer (305) is fixedly connected to the outer surface of the connecting post (304); The lower surface of the sliding column (4) is fixedly connected to a detection seat (401), and the lower end of the detection seat (401) is threadedly connected to a contact disc (403).

2. The stud thread hole concentricity inspection tool according to claim 1, characterized in that, The sliding column (4) has a through hole inside, and the sliding column (4) and the detection seat (401) are slidably connected to the through hole.

3. The stud thread hole concentricity inspection tool according to claim 1 or 2, characterized in that, The outer surface of the guide housing (1) is threadedly connected to a stud support structure (5), the stud support structure (5) comprising: Mounting bracket (501) is threaded to the outer surface of guide housing (1); A sliding column (502) is embedded in and slidably connected to the side surface of the mounting bracket (501); Spring (503) is nested and connected to the outer surface of sliding column (502); A support base (504) is fixedly connected to one end of a sliding column (502), and a handle (505) is fixedly connected to the upper surface of the support base (504).

4. The stud thread hole concentricity inspection tool according to claim 3, characterized in that, One end of the spring (503) contacts the handle (505), and the other end of the spring (503) contacts the mounting bracket (501).

5. The stud thread hole concentricity inspection tool according to claim 3, characterized in that, The end of the slide (502) is threaded with a nut (506).

6. The stud thread hole concentricity inspection tool according to claim 1, characterized in that, A rubber cover (101) is bonded to the outer surface of the guide housing (1), and a fastening bolt (102) is threaded onto the rear surface of the guide housing (1).

7. The stud thread hole concentricity inspection tool according to claim 1, characterized in that, The upper end of the sliding column (4) is threaded with a ball nut (402).

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