A kind of stud thread hole concentricity quick inspection gauge

Abstract

The utility model relates to concentricity detection technical field, concretely is a kind of stud screw hole concentricity quick inspection measuring tool, including the base of inside hollow structure, the top of base is provided with the fixed mechanism for the fixing of double-end stud, the top of base between two ends is provided with the detection mechanism for the fixed detection of the component fixed with thread hole. In the utility model, by the thread hole component meeting the requirement is fixed between two housings respectively, the rotation of the two half-toothed rings at corresponding position is driven by gear, can make thread hole component rotate, so that thread hole and the end portion of double-end stud corresponding are screwed, in the process of screwing, if one of thread hole appears the situation of jam, then it is explained that the end portion of double-end stud corresponding and thread hole concentricity deviation is too large and does not meet the standard, to realize the quick detection of double-end stud or single-end stud, and the end of double-end stud that does not meet the standard can be detected quickly.

Description

Technical Field

[0001] This utility model relates to the field of concentricity detection technology, specifically a rapid inspection measuring tool for the concentricity of stud threaded holes. Background Technology

[0002] A stud threaded hole is an internally threaded hole machined into a part for mating with a stud (bolt or screw). The internal thread of the stud threaded hole meshes with the external thread of the stud. Pressure is applied by tightening the stud, thereby fixing two or more parts together. After studs are mass-produced, the concentricity of the stud and the threaded hole needs to be checked in order to ensure the precise assembly of mechanical parts and improve their service life.

[0003] Currently, the concentricity of stud threaded holes is usually detected using a coordinate measuring machine or a 2.5D imaging machine, which can accurately detect the concentricity value of stud threaded holes. However, the detection speed is relatively slow. Although there is a measuring tool that can quickly detect the concentricity of stud threaded holes, for double-ended studs, one end of the stud needs to be detected first before the other end, which is quite troublesome. Moreover, detecting the two ends of double-ended studs separately will reduce the detection efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a quick measuring tool for inspecting the concentricity of stud threaded holes, so as 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 rapid inspection tool for the concentricity of stud threaded holes includes a base with a hollow internal structure, a fixing mechanism for fixing a double-ended stud is provided on the top of the base, and an inspection mechanism for fixing and inspecting parts with threaded holes is provided between the two ends of the top of the base.

[0007] The detection mechanism includes two symmetrical rectangular frames that slide at both ends of the top of the base. Both ends of the rectangular frames are slidably connected to a housing. A semi-gear ring is provided inside the housing. A tube shaft is rotatably inserted through the outer side of one of the housings located in the same rectangular frame. A gear that meshes with the semi-gear ring is fixedly connected to the outer wall of the tube shaft and inside the housing.

[0008] Furthermore, the inner opposite sides of the housing are fixedly connected with arc-shaped guide rails, and arc-shaped slots are opened on the outer side of the arc-shaped guide rails. Multiple support members that slide in the arc-shaped slots at corresponding positions are fixedly connected at equal angles to the outer side of the semi-tooth ring.

[0009] Furthermore, the bottom of the housing is fixedly connected to a slider, and the two ends of the inside of the rectangular frame are rotatably connected to a bidirectional screw that is screwed through and engaged with the two sliders at corresponding positions.

[0010] Furthermore, the base has sliding holes through both sides of its top surface, and the bottom ends of the rectangular frame are fixedly connected to movable blocks that slide through the corresponding sliding holes. The base has two symmetrical sliding rods fixedly connected between its two inner ends. The sliding rods slide through the two movable blocks at their corresponding positions. A support spring is provided between the outer side of the movable block and the inner side of the base, and on the outer side of the sliding rod at the corresponding position.

[0011] Furthermore, the base has two symmetrical support plates fixedly connected to its top surface, and a sleeve is rotatably inserted between the two support plates. Both ends of the sleeve are slidably fitted with round rods that penetrate the tube shaft at corresponding positions.

[0012] Furthermore, the outer wall of the round rod is provided with multiple hemispherical grooves at equal angles, and multiple cylindrical sleeves are fixedly connected to both ends of the outer wall of the tube shaft at equal angles. The interior of the cylindrical sleeves is connected to the interior of the tube shaft, and a spring steel ball is fixedly connected to the interior of the cylindrical sleeves and engages with the hemispherical grooves at corresponding positions. A crank handle is fixedly connected to one end of the round rod.

[0013] Furthermore, the top of the base has a through-hole two, and the top of the base and both ends of the through-hole two are fixedly connected to support blocks. The fixing mechanism includes two symmetrically arranged clamping plates, and rubber pads are fixedly connected to the opposite sides of the two clamping plates. A bidirectional screw rod that is rotatably connected to the two support blocks and screws through the two clamping plates is connected to the two support blocks. A limiting block that is slidably connected to the bottom of the clamping plate is fixedly connected to the through-hole two.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By fixing the threaded hole components that meet the requirements between the two housings, and driving the two half-tooth rings at the corresponding positions to rotate through the gear, the threaded hole components can be rotated so that the threaded holes can be screwed into the corresponding ends of the double-ended studs. If one of the threaded holes gets stuck during the screwing process, it means that the concentricity deviation between the corresponding end of the double-ended stud and the threaded hole is too large and does not meet the standard. This enables rapid detection of double-ended studs or single-ended studs, and can quickly detect which end of the double-ended stud does not meet the standard.

[0016] 2. The stud is fixed by two clamps, and the two rubber pads are recessed on the sides that contact the stud, which increases the friction between the stud and the two clamps and prevents the double-ended stud from rotating during the rotation and screwing of the threaded hole component. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the base in this utility model;

[0019] Figure 3 This is a schematic diagram of the fixing mechanism in this utility model;

[0020] Figure 4 This is a schematic diagram of the detection mechanism structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the rectangular frame in this utility model;

[0022] Figure 6 This is a schematic diagram of the housing, half-gear ring, and gear in this utility model;

[0023] Figure 7 This is a schematic diagram of the sleeve and the round rod in this utility model.

[0024] In the diagram: 1. Base; 11. Sliding hole one; 12. Support plate; 13. Support block; 2. Fixing mechanism; 21. Clamping plate; 22. Rubber pad; 23. Two-way lead screw; 24. Limiting block; 3. Detection mechanism; 31. Rectangular frame; 311. Two-way lead screw; 312. Moving block; 313. Support spring; 32. Housing; 321. Half gear ring; 322. Tube shaft; 323. Gear; 324. Cylindrical sleeve; 325. Arc guide rail; 326. Support component; 327. Slider; 33. Sleeve; 331. Round rod; 332. Hemispherical groove; 333. Crank handle; 34. Sliding rod. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1 - Figure 7In this embodiment of the present invention, a rapid inspection measuring tool for the concentricity of a stud threaded hole includes a base 1 with a hollow internal structure. A fixing mechanism 2 for fixing a double-ended stud is provided on the top of the base 1. A detection mechanism 3 for fixing and detecting parts with threaded holes is provided between the two ends of the top of the base 1. The detection mechanism 3 includes two symmetrical rectangular frames 31 that slide at the two ends of the top of the base 1 respectively. A housing 32 is slidably connected to both ends of the inner side of the rectangular frame 31. A semi-gear ring 321 is provided inside the housing 32. A tube shaft 322 is rotatably inserted through the outer side of one of the housings 32 located in the same rectangular frame 31. A gear 323 that meshes with the semi-gear ring 321 is fixedly connected to the outer wall of the tube shaft 322 and inside the housing 32.

[0027] Specifically, firstly, the two threaded hole components that meet the requirements are fixed between the two housings 32 at corresponding positions. Then, the manufactured double-ended studs are fixed in the fixing mechanism 2. Next, by moving the two rectangular frames 31, the two ends of the double-ended studs are brought into contact with the threaded holes at their corresponding positions. Rotating the two tube shafts 322 causes the gears 323 to drive the two half-gear rings 321 at their corresponding positions to rotate (the two half-gear rings 321 close together to form a complete gear ring). The rotation of the two half-gear rings 321 causes the component with the threaded hole to rotate. Since the two ends of the double-ended studs are in contact with the threaded holes, the rotating threaded hole component will screw into the corresponding end of the double-ended stud. If jamming occurs during the screwing-in process, it indicates that the concentricity deviation between one or both ends of the double-ended stud and the corresponding threaded hole is too large and does not meet the standard. If the threaded hole component screws in smoothly, it indicates that the concentricity deviation between the double-ended stud and the threaded hole is small and meets the requirements (generally, if the concentricity deviation between the stud and the threaded hole is too large, it meets the standard). If the size is too large, the stud may get stuck and unable to rotate during the engagement of the stud and the threaded hole. However, if both the stud and the threaded hole meet the standard, the engagement of the stud and the threaded hole is very smooth. After the double-ended stud is tested, it is disassembled and the next double-ended stud to be tested is fixed, thereby realizing the rapid testing of double-ended studs and threaded holes. It can also quickly test single-ended studs (when testing single-ended studs, the threaded hole component can be fixed between the two housings 32 at one of the rectangular frames 31, and the threaded hole component does not need to be fixed between the other two housings 32). This device fixes the threaded hole component that meets the requirements between the two housings 32 respectively, and drives the two half-tooth rings 321 at the corresponding positions to rotate through the gear 323, so that the threaded hole component can rotate so that the threaded hole can engage with the corresponding end of the double-ended stud. If one of the threaded holes gets stuck during the engagement process, it means that the concentricity deviation between the corresponding end of the double-ended stud and the threaded hole is too large and does not meet the standard, thereby realizing the rapid testing of double-ended studs or single-ended studs.

[0028] Example 1

[0029] like Figure 4 - Figure 6 As shown, in this embodiment, arc-shaped guide rails 325 are fixedly connected to the two opposite sides of the interior of the housing 32. Arc-shaped grooves are provided on the outer side of the arc-shaped guide rails 325. Multiple support members 326 that slide in the arc-shaped grooves at corresponding positions are fixedly connected to the outer side of the half-tooth ring 321 at equal angles. A slider 327 is fixedly connected to the bottom of the housing 32. A bidirectional screw 311 that is rotatably connected between the two ends of the interior of the rectangular frame 31 and screws through and engages with the two sliders 327 at corresponding positions is connected to the rectangular frame 31.

[0030] In this embodiment, the semi-gear ring 321 is suspended in the corresponding housing 32 by the cooperation of multiple support members 326 and two arc-shaped guide rails 325. The rotation of the bidirectional screw 311 can cause the two housings 32 at the corresponding positions to move relative to each other, so as to quickly fix the threaded hole component between the two semi-gear rings 321 at the corresponding positions or quickly remove the threaded hole component from between the two semi-gear rings 321 (a rubber anti-slip pad is provided on the inner wall of the semi-gear ring 321 to increase the friction between the threaded hole component and the semi-gear ring 321).

[0031] Example 2

[0032] like Figure 4 and Figure 5 As shown, in this embodiment, sliding holes 11 are provided through both sides of the top surface of the base 1. The bottom ends of the rectangular frame 31 are fixedly connected to movable blocks 312 that slide through the sliding holes 11 at the corresponding positions. Two symmetrical sliding rods 34 are fixedly connected between the two ends inside the base 1. The sliding rods 34 slide through the two movable blocks 312 at the corresponding positions. A support spring 313 is provided between the outer side of the movable block 312 and the inner side of the base 1 and on the outer side of the sliding rod 34 at the corresponding position.

[0033] In this embodiment, the rectangular frame 31 will approach the fixing mechanism 2 through the elastic action of the two support springs 313. Therefore, when testing the double-ended stud (or single-ended stud), the rectangular frame 31 is first moved away from the fixing mechanism 2, and then the threaded hole component is fixed between the two half-tooth rings 321 at the corresponding position. After fixing, the rectangular frame 31 is released. At this time, the rectangular frame 31 moves towards the fixing mechanism 2 under the elastic action of the two support springs 313 until the threaded end of the double-ended stud (or single-ended stud) contacts the threaded hole at the corresponding position. Then, the threaded hole component at the corresponding position is rotated by the two half-tooth rings 321. Since the support springs 313 pull the threaded hole component towards the double-ended stud (or single-ended stud), the rotation of the threaded hole component can make the threaded hole engage with the thread of the double-ended stud (or single-ended stud). The situation that occurs during the engagement process is used to determine whether the double-ended stud (or single-ended stud) meets the standard.

[0034] Example 3

[0035] like Figure 1 , Figure 4 and Figure 7 As shown, in this embodiment, two symmetrical support plates 12 are fixedly connected to the top surface of the base 1. A sleeve 33 is rotatably inserted between the two support plates 12. Both ends of the sleeve 33 are slidably sleeved with round rods 331 that pass through the corresponding tube shafts 322. The outer wall of the round rod 331 is provided with multiple hemispherical grooves 332 at equal angles. Both ends of the outer wall of the tube shaft 322 are fixedly connected with multiple cylindrical sleeves 324 at equal angles. The inside of the cylindrical sleeves 324 is connected to the inside of the tube shaft 322. The inside of the cylindrical sleeves 324 is fixedly connected with spring steel balls that engage with the hemispherical grooves 332 at the corresponding positions. One end of the round rod 331 is fixedly connected with a rocker handle 333.

[0036] In this embodiment, a limiting groove is first opened in the sleeve 33, and a locking block that is slidably connected to the limiting groove is fixed at the end of the round rod 331. This allows one round rod 331 to rotate while the other round rod 331 rotates. If a double-ended stud is being tested, rotating one of the crank handles 333 can make both round rods 331 rotate simultaneously. If one of the threaded holes gets stuck during the engagement process, the threaded hole cannot rotate due to the sticking and cannot continue to move forward. Therefore, the gear 323 will also not rotate due to the reverse force. The rotation of the round rod 331 will cause multiple spring steel balls to be compressed, causing the round rod 331 to spin freely inside the gear 323. If the engagement of the other threaded hole is relatively smooth, multiple spring steel balls will engage with multiple hemispherical grooves 332 at corresponding positions, allowing the round rod 331 to drive the gear 323 to rotate normally. This enables rapid testing of double-ended studs (or single-ended studs) and allows for rapid detection of which end of the double-ended stud does not meet the standard.

[0037] Example 4

[0038] like Figure 3 As shown, in this embodiment, a sliding hole 2 is provided through the top of the base 1. Support blocks 13 are fixedly connected to the top of the base 1 and at both ends of the sliding hole 2. The fixing mechanism 2 includes two symmetrically arranged clamping plates 21. Rubber pads 22 are fixedly connected to the opposite side of the two clamping plates 21. A bidirectional screw 23 that is rotatably connected to the two support blocks 13 and screwed through the two clamping plates 21 is provided. A limiting block 24 that is slidably connected to the bottom of the clamping plate 21 is fixedly connected to the sliding hole 2.

[0039] In this embodiment, the two clamping plates 21 are first moved away from each other by the bidirectional lead screw 23. Then, the double-ended stud (or single-ended stud) to be tested is placed between the two clamping plates 21, and the two clamping plates 21 clamp the stud by the bidirectional lead screw 23. The sides of the two rubber pads 22 that contact the stud are concave, which can increase the friction between the stud and the two clamping plates 21 and prevent the threaded hole component from rotating during the rotation and engagement process.

[0040] 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.

[0041] 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 rapid inspection tool for the concentricity of stud threaded holes, characterized in that, It includes a base (1) with a hollow internal structure, a fixing mechanism (2) for fixing double-headed studs is provided on the top of the base (1), and a detection mechanism (3) for fixing and detecting parts with threaded holes is provided between the two ends of the top of the base (1). The testing mechanism (3) includes two symmetrical rectangular frames (31) that slide at the top ends of the base (1). Both ends of the rectangular frames (31) are slidably connected to housings (32). A semi-gear ring (321) is provided inside the housing (32). A tube shaft (322) is rotatably inserted through the outer side of one of the housings (32) located in the same rectangular frame (31). A gear (323) that meshes with the semi-gear ring (321) is fixedly connected to the outer wall of the tube shaft (322) and inside the housing (32).

2. The rapid inspection gauge for the concentricity of stud threaded holes according to claim 1, characterized in that, The inner sides of the housing (32) are fixedly connected to the arc-shaped guide rails (325). The outer side of the arc-shaped guide rails (325) is provided with arc-shaped slots. The outer side of the half-tooth ring (321) is fixedly connected with multiple support members (326) that slide in the arc-shaped slots at corresponding positions.

3. The rapid inspection gauge for the concentricity of stud threaded holes according to claim 2, characterized in that, The bottom of the housing (32) is fixedly connected to a slider (327), and the two ends of the inside of the rectangular frame (31) are rotatably connected to a two-way screw (311) that is screwed through and engaged with the two sliders (327) at the corresponding positions.

4. The rapid inspection gauge for the concentricity of stud threaded holes according to claim 3, characterized in that, The top surface of the base (1) has sliding holes (11) on both sides. The bottom ends of the rectangular frame (31) are fixedly connected to moving blocks (312) that slide through the sliding holes (11) at the corresponding positions. The two ends of the base (1) are fixedly connected to two symmetrical sliding rods (34). The sliding rods (34) slide through the two moving blocks (312) at the corresponding positions. A support spring (313) is provided between the outer side of the moving block (312) and the inner side of the base (1) and the outer side of the sliding rod (34) at the corresponding position.

5. The rapid inspection gauge for the concentricity of stud threaded holes according to claim 4, characterized in that, The top surface of the base (1) is fixedly connected to two symmetrical support plates (12), and a sleeve (33) is rotatably connected between the two support plates (12). Both ends of the sleeve (33) are slidably connected to round rods (331) that pass through the tube shaft (322) at the corresponding position.

6. The rapid inspection gauge for the concentricity of stud threaded holes according to claim 5, characterized in that, The outer wall of the round rod (331) is provided with multiple hemispherical grooves (332) at equal angles in an annular shape. Both ends of the outer wall of the tube shaft (322) are fixedly connected with multiple cylindrical sleeves (324) at equal angles in an annular shape. The inside of the cylindrical sleeves (324) is connected to the inside of the tube shaft (322). The inside of the cylindrical sleeves (324) is fixedly connected with spring steel balls that engage with the hemispherical grooves (332) at the corresponding positions. One end of the round rod (331) is fixedly connected with a rocker handle (333).

7. The rapid inspection gauge for the concentricity of stud threaded holes according to claim 6, characterized in that, The top of the base (1) is provided with a sliding hole II. Support blocks (13) are fixedly connected to the top of the base (1) and at both ends of the sliding hole II. The fixing mechanism (2) includes two symmetrically arranged clamps (21). Rubber pads (22) are fixedly connected to the opposite side of the two clamps (21). A two-way screw (23) that is rotatably connected to the two support blocks (13) and screwed through the two clamps (21) is connected to the bottom of the clamps (21). A limiting block (24) that is slidably connected to the sliding hole II is fixedly connected to the bottom of the clamps (21).

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