Thread plug gauge dismounting mechanism and pitch diameter checking equipment

Abstract

The utility model relates to a thread plug gauge dismounting mechanism and pitch diameter verification equipment. The technical problem that an existing thread plug gauge is inconvenient to disassemble is solved. The thread plug gauge dismounting mechanism comprises a mounting sleeve which is of a cylindrical structure and is internally provided with an axially-penetrating mounting hole, strip-shaped openings which are axially arranged and are communicated with the mounting hole are symmetrically formed in the outer walls of the two sides of the mounting sleeve, and a circumferential limiting inner wall is arranged at the end, close to the strip-shaped holes, of the mounting hole; the detection shaft is axially arranged in the mounting sleeve in a penetrating manner, the extending end of the detection shaft is provided with a limiting section matched with the circumferential limiting inner wall, and the end part of the limiting section is provided with a concave positioning groove and an arc-shaped concave surface communicated with the positioning groove; the dismounting rod is arranged in the strip-shaped opening in a penetrating mode in the radial direction of the mounting sleeve, the two ends of the dismounting rod penetrate out of the mounting sleeve, and the outer wall of the dismounting rod can be tightly attached to the strip-shaped opening to slide and can be axially connected to the arc-shaped concave face. The thread plug gauge dismounting mechanism improves the detection shaft taking-out efficiency and prolongs the service life.

Description

Technical Field

[0001] This utility model belongs to the field of thread plug gauges, and relates to a thread plug gauge disassembly mechanism and a pitch diameter verification device. Background Technology

[0002] For example, Chinese patent literature discloses a double-handle calibrated thread plug gauge for thread measurement [202122034156.X], which includes a thread plug gauge body, mounting grooves on both sides of the thread plug gauge body, handles inside the two mounting grooves, fixing rods at both ends of the thread plug gauge body, and pop-out mechanisms that are fixedly installed with the fixing rods at both ends of the thread plug gauge body.

[0003] The drawbacks of the above technical solution are: the alignment efficiency between the fixing rod and the pop-out mechanism is low during disassembly and assembly; under tight structural conditions, it is easy to jam and the material removal efficiency is low; the pop-out mechanism is a vulnerable part and has low reliability in applying force; it is easy to be damaged and fail after long-term use and is difficult to replace. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a thread plug gauge disassembly mechanism and a pitch diameter verification device.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] The thread plug gauge disassembly mechanism includes:

[0007] The mounting sleeve has a cylindrical structure and an axially penetrating mounting hole inside. The outer walls on both sides of the mounting sleeve are symmetrically provided with axially arranged strip-shaped openings that communicate with the mounting hole. The end of the mounting hole near the strip-shaped opening is provided with a circumferentially restricting inner wall.

[0008] The detection shaft is axially inserted into the mounting sleeve, and the insertion end of the detection shaft is provided with a limiting section that cooperates with the inner wall of the circumferential limiting section. The end of the limiting section is provided with a recessed positioning groove and an arc-shaped concave surface communicating with the positioning groove.

[0009] The disassembly rod is radially inserted into the slot and extends out of the slot at both ends. The outer wall of the disassembly rod can slide tightly against the slot and can axially connect with the arc-shaped concave surface.

[0010] Furthermore, the outer diameter of the circumferentially restricting inner wall is smaller than the inner diameter of the mounting hole.

[0011] Furthermore, the circumferentially restrictive inner wall has a polygonal structure, and the restrictive segment fits into the circumferentially restrictive inner wall.

[0012] Furthermore, the inner wall of the circumferential restriction is provided with a restriction groove, and the outer wall of the restriction section is provided with a restriction protrusion that can pass through the restriction groove.

[0013] Furthermore, the inner diameter of the strip opening has a stepped structure, and the disassembly rod is slidably disposed in the wide diameter section of the strip opening.

[0014] Furthermore, the limiting section is also provided with a narrow diameter section that passes through the strip opening in sequence, and a positioning pin for the limiting section.

[0015] Furthermore, the circumferential outer wall of the mounting sleeve is provided with a radially protruding limiting shoulder.

[0016] Furthermore, the circumferential outer wall of the mounting sleeve has a polygonal structure.

[0017] Furthermore, flexible pads that fit against the outer wall of the mounting sleeve are sleeved at both ends of the disassembly rod.

[0018] This utility model also provides a pitch diameter calibration device, which has the thread plug gauge disassembly mechanism as described above.

[0019] Compared with existing technologies, the detection shaft and mounting sleeve in this thread plug gauge disassembly mechanism are compact and reliable to install. At the same time, the internal push and external pull method can apply force to both ends of the detection shaft, with high force application accuracy, which is not easy to deviate and damage the detection shaft, improves the efficiency of detection shaft removal, and prevents the mounting sleeve and detection shaft from loosening during long-term use, thus extending service life. Attached Figure Description

[0020] Figure 1 A schematic diagram of a thread plug gauge disassembly mechanism provided by this utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the axial cross-section of the thread plug gauge disassembly mechanism.

[0022] Figure 3 for Figure 1 A top view diagram of the thread plug gauge disassembly mechanism.

[0023] Figure 4 for Figure 1 A schematic diagram of the radial section of the thread plug gauge removal mechanism. Figure 1 .

[0024] Figure 5 for Figure 1 A schematic diagram of the radial section of the thread plug gauge removal mechanism. Figure 2 .

[0025] In the diagram, 10 is the mounting sleeve; 11 is the mounting hole; 12 is the strip opening; 13 is the circumferential limiting inner wall; 14 is the limiting groove; 15 is the limiting shoulder; 20 is the detection shaft; 21 is the limiting section; 22 is the positioning groove; 23 is the arc-shaped concave surface; 24 is the limiting protrusion; 30 is the flexible pad; 40 is the disassembly rod; and 50 is the positioning pin. Detailed Implementation

[0026] Example 1, please refer to Figures 1 to 4 This is a schematic diagram of a thread plug gauge disassembly mechanism provided by this utility model. The thread plug gauge disassembly mechanism includes: a mounting sleeve 10, a detection shaft 20 passing through the end of the mounting sleeve 10, and a disassembly rod 40 radially passing through the mounting sleeve 10. During thread plug gauge calibration, the clamping mechanism generally clamps and fixes both ends of the thread plug gauge. When the axial length of the thread plug gauge is greater than the maximum clamping length of the clamping mechanism, it is necessary to remove the detection shaft from the thread plug gauge and perform single-axis thread calibration sequentially.

[0027] In this embodiment, the mounting sleeve 10 has a cylindrical structure and an axially penetrating mounting hole 11 inside. The mounting hole 11 is used to insert and install the detection shaft 20. The outer walls on both sides of the mounting sleeve 10 are symmetrically provided with axially arranged strip-shaped openings 12 that communicate with the mounting hole 11. The strip-shaped openings 12 provide an observation port at one end of the inner side of the detection shaft 20 and also facilitate the application of force to one end of the inner side of the detection shaft 20 during disassembly and assembly. A circumferentially restricting inner wall 13 is provided at one end of the mounting hole 11 near the strip-shaped opening. The circumferentially restricting inner wall 13 is used to match the inner outer wall of the detection shaft 20 to prevent the detection shaft 20 from rotating relative to the mounting sleeve 10 under force.

[0028] Ideally, the outer diameter of the circumferentially confined inner wall 13 is smaller than the inner diameter of the mounting hole 11, which limits the axial insertion length of the detection shaft 20. Figure 2 In order to clearly show the change in the inner diameter of the mounting sleeve 10, the difference in the inner diameter between the circumferentially limited inner wall 13 and the mounting hole 11 is enlarged. The circumferential outer wall of the mounting sleeve 10 has a polygonal structure, which increases the grip and makes it easier to apply force by rotation.

[0029] The thread plug gauge is a double-handle thread plug gauge, meaning it has two sensing shafts 20, unlike conventional double-handle thread plug gauges, as it is a custom-designed structure. In this embodiment, one sensing shaft 20 is used as an example. The sensing shaft 20 has a straight rod-like body, with its inner end axially inserted into the mounting sleeve 10 for fixation, and its outer end located on the outer side of the mounting sleeve 10 with a threaded section on its outer wall, typically a go gauge thread or a no-go gauge thread.

[0030] Specifically, a limiting section 21 is provided at the end of the detection shaft 20 that extends into the mounting sleeve 10, and it engages with the circumferential limiting inner wall 13. The outer wall of the limiting section 21 fits against the circumferential limiting inner wall 13. In this embodiment, the circumferential limiting inner wall 13 has a polygonal structure, and the outer wall of the limiting section 21 has a corresponding polygonal structure, such as a hexagonal structure. By engaging the limiting section 21 with the circumferential limiting inner wall 13, the circumferential rotation of the detection shaft 20 is restricted.

[0031] In other embodiments, please refer to Figure 5The inner wall 13 of the circumferential restriction is provided with a recessed restriction groove 14, and the outer wall of the restriction section 21 is provided with a restriction protrusion 24 that can pass through the restriction groove 14. The cooperation between the restriction protrusion 24 and the restriction groove 14 can serve as a replacement or supplementary optimization scheme for the restriction section 21 and the inner wall 13 of the circumferential restriction, thereby improving the installation stability of the detection shaft 20.

[0032] In this embodiment, the length of the limiting segment 21 is greater than the axial length of the circumferential limiting inner wall 13. After the limiting segment 21 passes through the circumferential limiting inner wall 13, its end protrudes from the strip opening 12, increasing the installation stability of the detection shaft 20. The end of the limiting segment 21 is provided with a recessed positioning groove 22, which facilitates the positioning and fixing of the clamping end of the clamping mechanism. The end of the limiting segment 21 is also provided with an arc-shaped concave surface 23 connected to the positioning groove 22. The arc-shaped concave surface 23 facilitates the connection of the disassembly rod 40 and ensures force balance during the application of force.

[0033] In this embodiment, the disassembly rod 40 is radially inserted into the slot 12 along the mounting sleeve 10 and protrudes from the mounting sleeve 10 at both ends. The outer diameter of the disassembly rod 40 is the same as the width of the slot 12. The radial cross-sectional shape of the disassembly rod 40 is rectangular or circular. It is only necessary to ensure that the outer wall of the disassembly rod 40 can slide tightly against the slot 12 and that the outer wall of the disassembly rod 40 can be axially connected to the arc concave surface 23. It is conceivable that the detection shaft 20 is mainly fixed by a tight fit. By applying force by hand to the two ends of the disassembly rod 40 protruding from the mounting sleeve 10, the disassembly rod 40 acts on the inner end of the detection rod, forcing the detection rod to move outward as a whole, reducing the insertion depth of the detection rod in the mounting sleeve 10, especially the length of the limiting section 21 passing through the circumferential limiting inner wall 13, which can reduce the resistance to removing the detection shaft 20. Then, the detection shaft 20 is pulled outward. This push-in and pull-out method can apply force to both ends of the detection shaft 20, with high force application accuracy, and is not easy to deviate and damage the detection shaft 20. It improves the efficiency of removing the detection shaft 20 and prevents the installation sleeve 10 from loosening with the detection shaft 20 after long-term use, thus improving the service life.

[0034] Ideally, the inner diameter of the slot 12 is stepped, and the limiting section 21 is provided with a connecting hole corresponding to the narrow section of the slot 12. The limiting section 21 is also provided with a positioning pin 50 that passes through the narrow section of the slot 12 and the limiting section 21 in sequence. The two ends of the positioning pin 50 act on the narrow section of the slot 12 to form an axial limit.

[0035] The disassembly rod 40 is slidably positioned in the wide-diameter section of the slot 12. Removing the locating pin 50 followed by removing the detection shaft 20 will not affect the narrow-diameter section structure of the slot 12. Flexible pads 30, made of elastic rubber or silicone, are fitted to both ends of the disassembly rod 40 and conform to the outer wall of the mounting sleeve 10. These flexible pads prevent accidental finger entrapment in the slot 12 when force is applied to the disassembly rod 40.

[0036] Ideally, the circumferential outer wall of the mounting sleeve 10 is provided with a radially protruding limiting shoulder 15. The limiting shoulder 15 is used to apply axial force when the hand holds the mounting sleeve 10, so as to avoid the problem of the hand loosening the grip.

[0037] Example 2: This utility model also provides a pitch diameter calibration device, which has a thread plug gauge disassembly mechanism as described above. Except for the thread plug gauge disassembly mechanism, the other components are all existing technology or commercially available parts.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A thread plug gauge disassembly mechanism, characterized in that, include: The mounting sleeve (10) has a cylindrical structure and an axially penetrating mounting hole (11) inside. The outer walls of the mounting sleeve (10) on both sides are symmetrically provided with axially arranged strip-shaped openings (12) that communicate with the mounting hole (11). The mounting hole (11) is provided with a circumferentially restricting inner wall (13) at one end near the strip-shaped opening. The detection shaft (20) is axially inserted in the mounting sleeve (10) and the insertion end of the detection shaft (20) is provided with a limiting section (21) that cooperates with the circumferential limiting inner wall (13). The end of the limiting section (21) is provided with a recessed positioning groove (22) and an arc-shaped concave surface (23) that communicates with the positioning groove (22). The disassembly rod (40) is radially inserted into the slot (12) along the mounting sleeve (10) and both ends protrude from the mounting sleeve (10). The outer wall of the disassembly rod (40) can slide tightly against the slot (12), and the outer wall of the disassembly rod (40) can be axially connected to the arc-shaped concave surface (23).

2. The thread plug gauge disassembly mechanism according to claim 1, characterized in that, The outer diameter of the circumferentially restricting inner wall (13) is smaller than the inner diameter of the mounting hole (11).

3. The thread plug gauge disassembly mechanism according to claim 2, characterized in that, The circumferential limiting inner wall (13) has a polygonal structure, and the limiting segment (21) fits into the circumferential limiting inner wall (13).

4. The thread plug gauge disassembly mechanism according to claim 2 or 3, characterized in that, The circumferential inner wall (13) is provided with a limiting groove (14), and the outer wall of the limiting section (21) is provided with a limiting protrusion (24) that can pass through the limiting groove (14).

5. The thread plug gauge disassembly mechanism according to claim 1, characterized in that, The inner diameter of the slot (12) is stepped, and the disassembly rod (40) is slidably disposed in the wide section of the slot (12).

6. The thread plug gauge disassembly mechanism according to claim 5, characterized in that, The limiting section (21) is also provided with a narrow diameter section that passes through the strip opening (12) in sequence, and a positioning pin (50) for the limiting section (21).

7. The thread plug gauge disassembly mechanism according to claim 1, characterized in that, The circumferential outer wall of the mounting sleeve (10) is provided with a radially protruding limiting shoulder (15).

8. The thread plug gauge disassembly mechanism according to claim 7, characterized in that, The outer circumferential wall of the mounting sleeve (10) has a polygonal structure.

9. The thread plug gauge disassembly mechanism according to claim 8, characterized in that, The disassembly rod (40) has flexible pads (30) that fit against the outer wall of the mounting sleeve (10) at both ends.

10. A median diameter calibration device, characterized in that, The device has a thread plug gauge disassembly mechanism as described in any one of claims 1-9.

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