Bolt thread tolerance testing fixture

Abstract

The utility model relates to the technical field of bolts, and discloses a bolt thread tolerance testing fixture, which comprises a base, a sliding chute arranged on the lower surface of the base, a fixing piece arranged on the upper surface of the base, a bolt sleeve arranged on one side of the fixing piece, a sliding piece arranged on the upper surface of the base, and a supporting piece arranged on the upper surface of the sliding piece. A rotating piece is installed on one side of the supporting piece, a connecting piece is installed on one side of the rotating piece, and a thread ring gauge is installed on one side of the connecting piece. Through the first sliding block, the second sliding block and the sliding groove, the moving track of the bolt is enhanced, errors in the measuring process are reduced, the rotating piece can rotate flexibly through the balls, the thread ring gauge can rotate forwards and reversely, the position of the thread ring gauge can be adjusted conveniently, and through the first annular clamping block and the fixing piece, bolt sleeves of different models can be replaced conveniently. Measurement requirements of bolts of different models are met, the connecting piece is connected with the thread ring gauge in a sleeved mode, replacement of the thread ring gauges of different models is facilitated, and measurement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, specifically a bolt thread tolerance inspection tool. Background Technology

[0002] A bolt is a mechanical part, a type of fastener consisting of a head and a threaded shank (a cylinder with external threads). It is used in conjunction with a nut to fasten two parts with through holes, acting as an anchoring component to secure the connected parts to a hardened concrete substrate. Bolts are generally classified into two types: fully threaded and partially threaded. Fully threaded bolts have a threaded shank that runs the entire length of the connected part, while partially threaded bolts have a threaded section only. The length and diameter of the shank can be designed and manufactured according to specific requirements.

[0003] Application number CN201020530379.4 discloses a measuring tool for detecting the positional tolerance of external threads, including a tapered nut, a tapered mandrel for machining the tapered nut, and a test bolt for detecting the reliability of the tapered nut. The tapered nut is fitted onto the tapered mandrel with a coaxiality of 0.01 mm. The large end dimension of the tapered nut is equal to the maximum value of the mean diameter of the thread ring gauge at the through end of the bolt being tested, and the small end dimension of the tapered nut is equal to the minimum value of the mean diameter of the thread ring gauge at the stop end of the bolt being tested. The perpendicularity tolerance between the axis of the tapered nut and the end face is 0.005 mm. This utility model has a simple structure, novel design, small size, low production cost, and high detection accuracy.

[0004] However, there are shortcomings. Before using tapered nuts, a test bolt is needed to check their reliability, which reduces the user's work efficiency. Also, when measuring different types of bolts, different types of tapered nuts are required for the tapered mandrel and test bolt, which is inconvenient to replace and increases production costs. Utility Model Content

[0005] The purpose of this utility model is to provide a bolt thread tolerance inspection tool to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a bolt thread tolerance inspection tool, comprising a base, a groove formed on the lower surface of the base, a fixing member mounted on the upper surface of the base, a bolt sleeve mounted on one side of the fixing member, a sliding member mounted on the upper surface of the base, a support member mounted on the upper surface of the sliding member, a rotating member mounted on one side of the support member, a connecting member mounted on one side of the rotating member, and a thread ring gauge mounted on one side of the connecting member.

[0008] Furthermore, a first slider is fixedly installed on the lower surface of the fixing member. The first slider is slidably connected to the slide groove. A first annular groove is provided on one side of the fixing member. The purpose of this arrangement is to fix the connection direction of the bolt and strengthen the movement trajectory of the bolt.

[0009] Furthermore, the sliding component includes a base plate and a second slider, which is slidably connected to a slide groove. There are three slide grooves. The purpose of this arrangement is to fix the moving direction of the thread ring gauge and reduce the error in the measurement process.

[0010] Furthermore, a second annular groove is provided on one side of the support member, and a clearance hole is provided inside the support member. The inner diameter of the clearance hole is smaller than the inner diameter of the second annular groove. The purpose of this arrangement is to provide space for the bolt to be tested during inspection, so that the thread ring gauge can be easily screwed in and out. The second annular groove allows the rotating part to engage with the support member, facilitating the connection of the rotating part.

[0011] Furthermore, the rotating component includes a ball bearing, a second annular locking block, and a fixing block. The fixing block has a hollow structure. One side of the fixing block is fixedly connected to the second annular locking block, and one side of the second annular locking block is fixedly connected to the ball bearing. The purpose of this arrangement is to enable the rotating component to rotate flexibly through the ball bearing, so that the thread ring gauge can rotate in both directions, making it easy to adjust the position of the thread ring gauge.

[0012] Furthermore, the bolt sleeve includes a first annular locking block, which engages with the fixing member. The connecting member has a hollow internal structure, and its outer surface engages with the rotating member. A threaded ring gauge is fitted inside the connecting member. This arrangement facilitates the replacement of different bolt sleeve models through the first annular locking block and the fixing member, meeting the measurement needs of different bolt models. The locking connection facilitates the replacement of the bolt sleeve, and the engagement of the connecting member with the threaded ring gauge facilitates the replacement of different threaded ring gauge models, thus improving measurement efficiency.

[0013] This utility model has the following beneficial effects:

[0014] (1) This utility model achieves the effect of fixing the moving direction of the thread ring gauge, strengthening the moving trajectory of the bolt, and reducing the error in the measurement process by using the first slider, the second slider and the groove. The ball allows the rotating part to rotate flexibly, so that the thread ring gauge can rotate forward and backward, which is convenient for adjusting the position of the thread ring gauge.

[0015] (2) This utility model facilitates the replacement of different types of bolt sleeves through the first annular locking block and the fixing component, meeting the measurement needs of different types of bolts. The connection method is a snap-fit, which facilitates the replacement of bolt sleeves. The connecting component and the thread ring gauge are fitted together, which facilitates the replacement of different types of thread ring gauges, thus achieving the effect of improving measurement efficiency.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

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

[0019] Figure 2 This is a schematic cross-sectional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the rotating structure of this utility model;

[0021] Figure 4 This is a schematic cross-sectional view of the rotating structure of this utility model;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] In the diagram: 1. Base; 101. Slide groove; 2. Fixing component; 201. First annular groove; 202. First slider; 3. Bolt sleeve; 301. First annular locking block; 4. Sliding component; 401. Base plate; 402. Second slider; 5. Support component; 501. Clearance hole; 502. Second annular groove; 6. Rotating component; 601. Ball bearing; 602. Second annular locking block; 603. Fixing block; 7. Connecting component; 8. Threaded ring gauge. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0025] Please see Figures 1-4As shown, this utility model is a bolt thread tolerance inspection tool, including a base 1, a groove 101 is provided on the lower surface of the base 1, a fixing member 2 is installed on the upper surface of the base 1, a bolt sleeve 3 is installed on one side of the fixing member 2, a sliding member 4 is installed on the upper surface of the base 1, a support member 5 is installed on the upper surface of the sliding member 4, a rotating member 6 is installed on one side of the support member 5, a connecting member 7 is installed on one side of the rotating member 6, and a thread ring gauge 8 is installed on one side of the connecting member 7.

[0026] A first slider 202 is fixedly installed on the lower surface of the fixing member 2. The first slider 202 is slidably connected to the slide groove 101. A first annular groove 201 is provided on one side of the fixing member 2.

[0027] The sliding member 4 includes a base plate 401 and a second slider 402. The second slider 402 is slidably connected to the slide groove 101, and there are three slide grooves 101.

[0028] A second annular groove 502 is provided on one side of the support member 5, and a clearance hole 501 is provided inside the support member 5. The inner diameter of the clearance hole 501 is smaller than the inner diameter of the second annular groove 502.

[0029] The rotating component 6 includes a ball bearing 601, a second annular locking block 602, and a fixing block 603. The fixing block 603 has a hollow structure. One side of the fixing block 603 is fixedly connected to the second annular locking block 602, and one side of the second annular locking block 602 is fixedly connected to the ball bearing 601.

[0030] The bolt sleeve 3 includes a first annular locking block 301, which is engaged with the fixing member 2. The connecting member 7 has a hollow internal structure, and its outer surface is engaged with the rotating member 6. A threaded ring gauge 8 is sleeved inside the connecting member 7.

[0031] Working principle: When using this utility model, firstly, the fixing part 2 and the sliding part 4 are installed on the slide groove 101 of the base 1 through the first slider 202 and the second slider 402. Then, the bolt sleeve 3 is installed on the first annular groove 201 of the fixing part 2 through the first annular locking block 301. The rotating part 6 is installed on the second annular groove 502 of the support part 5 through the second annular locking block 602. One side of the connecting part 7 is installed on the fixing block 603 of the rotating part 6, and the other side of the connecting part 7 is fitted with a threaded ring gauge 8. Pushing the sliding part 4 causes the threaded ring gauge 8 to slide on the slide groove 101. Rotating the rotating part 6 causes the ball 601 to roll inside the second annular groove 502, driving the rotation of the threaded ring gauge 8, satisfying the forward and reverse rotation of the threaded ring gauge 8. The cooperation with the slide groove 101 allows the threaded ring gauge 8 to be easily screwed in and out, improving work efficiency.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A bolt thread tolerance inspection tool, comprising a base (1), characterized in that: The lower surface of the base (1) is provided with a sliding groove (101), the upper surface of the base (1) is provided with a fixing member (2), a bolt sleeve (3) is provided on one side of the fixing member (2), a sliding member (4) is provided on the upper surface of the base (1), a support member (5) is provided on the upper surface of the sliding member (4), a rotating member (6) is provided on one side of the support member (5), a connecting member (7) is provided on one side of the rotating member (6), and a threaded ring gauge (8) is provided on one side of the connecting member (7).

2. The bolt thread tolerance inspection tool according to claim 1, characterized in that: The lower surface of the fixing member (2) is fixedly installed with a first slider (202), the first slider (202) is slidably connected with the slide groove (101), and a first annular groove (201) is provided on one side of the fixing member (2).

3. A bolt thread tolerance inspection tool according to claim 1, characterized in that: The sliding member (4) includes a base plate (401) and a second slider (402), the second slider (402) and the slide groove (101) are slidably connected, and the number of slide grooves (101) is three.

4. A bolt thread tolerance inspection tool according to claim 1, characterized in that: The support member (5) has a second annular groove (502) on one side and a relief hole (501) inside the support member (5). The inner diameter of the relief hole (501) is smaller than the inner diameter of the second annular groove (502).

5. A bolt thread tolerance inspection tool according to claim 1, characterized in that: The rotating component (6) includes a ball (601), a second annular locking block (602), and a fixing block (603). The fixing block (603) has a hollow structure. One side of the fixing block (603) is fixedly connected to the second annular locking block (602), and one side of the second annular locking block (602) is fixedly connected to the ball (601).

6. A bolt thread tolerance inspection tool according to claim 1, characterized in that: The bolt sleeve (3) includes a first annular locking block (301), which is engaged with the fixing member (2). The connector (7) has a hollow structure inside. The outer surface of the connector (7) is engaged with the rotating member (6). A threaded ring gauge (8) is sleeved inside the connector (7).

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