Screw plug gauge screwing device and screwing method thereof

Abstract

The invention provides a thread plug gauge screwing device and a screwing method thereof. A thread plug gauge comprises a cylinder, a go end and a no-go end, wherein the go end and the no-go end are arranged at the two ends of the cylinder respectively and used for detecting a screw hole. Wherein the cross section of the column body is provided with a polygonal structure, at least one groove body which is sunken inwards is formed in the column body, the device comprises a fixing mechanism which is arranged on the column body in a sleeving manner and is allowed to be relatively fixed together with the column body, and a stress application mechanism which is arranged on the fixing mechanism and extends outwards in a manner of forming an included angle with the fixing mechanism, the force applying mechanism is used for extending a force arm for applying acting force to the fixing mechanism so as to drive the fixing mechanism to drive the thread plug gauge to rotate. In this way, the labor intensity of operators can be reduced. And meanwhile, stable application of the acting force can be guaranteed. Therefore, the detection efficiency can be improved, and the thread plug gauge or the workpiece screw hole can be protected.

Description

Technical Field

[0001] This invention relates to the field of thread hole inspection technology, and in particular to a thread plug gauge tightening device and its tightening method. Background Technology

[0002] A thread plug gauge is a commonly used measuring tool for inspecting the dimensional accuracy of threaded holes. For example... Figure 1 As shown, a thread plug gauge typically includes a cylinder 101, and a go end 102 and a no-go end 103 respectively disposed at both ends of the cylinder 101. The go end 102 is used to inspect the minimum limit size of the threaded hole, while the no-go end 103 is used to inspect the maximum limit size of the threaded hole. The criterion for judging whether the threaded hole is qualified is that the go end 102 can be fully screwed into the threaded hole, while the no-go end 103 can only be screwed into the threaded hole by no more than one-quarter turn.

[0003] In the prior art, when it is necessary to inspect the threaded hole, the operator usually holds the cylindrical part 101 of the thread plug gauge 10 directly by hand and applies a torsional force by wrist to rotate the cylindrical part 101, thereby screwing the go end 102 into the threaded hole. After the go end inspection is completed, the go end 102 is unscrewed, and then the stop end 103 is screwed into the threaded hole for inspection in the same manual manner.

[0004] While this method can inspect threaded holes, the limited size of the thread plug gauge and the short lever arm when held by the operator make it difficult to apply sufficient torque, especially when inspecting threaded holes with a certain preload or requiring precise control of the screw depth. This not only increases the operator's workload and affects inspection efficiency, but also risks uneven force or slippage causing the thread plug gauge to fail to be accurately positioned, thus affecting the reliability of the inspection results and even posing a risk of damaging the thread plug gauge or the threaded hole in the workpiece. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a thread plug gauge tightening device and its tightening method. To achieve the above objectives, this invention adopts the following technical solution: A thread plug gauge tightening device, the thread plug gauge comprising a column, and a go end and a no-go end respectively disposed at both ends of the column for inspecting threaded holes. The column has a polygonal cross-section and at least one inwardly recessed groove. The device includes a fixing mechanism sleeved on the column and allowing it to be fixed relative to the column, and a force-applying mechanism disposed on the fixing mechanism and extending outward at an angle to the fixing mechanism. The force-applying mechanism is used to extend the lever arm that applies force to the fixing mechanism so as to drive the fixing mechanism to rotate the thread plug gauge.

[0006] Furthermore, the fixing mechanism includes a sleeve selectively fitted onto the column, and at least one locking part passing through the sleeve, the locking part being configured to allow movement along the sleeve so that it can be selectively positioned in the groove.

[0007] Furthermore, the fixing mechanism also includes a connecting portion disposed at the end of the sleeve and allowing it to extend axially thereto, the connecting portion being configured to allow it to be fixed relative to the force-applying mechanism in a selective manner.

[0008] Furthermore, the cross-section of the connecting part is configured as a polygonal structure, and the force-applying mechanism includes a locking part disposed on the connecting part and allowing it to engage with the connecting part, and a force-applying rod fixed relative to the locking part and extending outward.

[0009] Furthermore, an anti-slip sleeve is installed on the force-applying rod to increase the friction between the sleeve and the force-applying rod when a force is applied.

[0010] Furthermore, the axial length of the sleeve is configured to extend from the through end and the stop end to the radially outer side of the groove.

[0011] Furthermore, the locking part includes an abutment that allows it to abut against the groove, and a threaded connector extending along the abutment, the threaded connector passing through the sleeve and engaging with the sleeve thread.

[0012] Furthermore, there are three locking parts, and the locking parts are distributed circumferentially on the sleeve at equal intervals.

[0013] Furthermore, the locking part is configured in two sets, and the two sets of locking parts are distributed along the axis of the sleeve in a parallel manner, and the two sets of locking parts are allowed to be misaligned with each other, in order to increase the contact area between the locking part and the thread plug gauge and the force point located on the thread plug gauge.

[0014] According to a second aspect of the present invention, a method for tightening a threaded plug gauge is provided, the tightening method being implemented by a tightening device according to any one of the preceding claims, comprising the steps of: Step 1: With the fixed connection and fixing mechanism and the thread plug gauge, put the sleeve on the thread plug gauge and apply force to each screwing part in sequence, so that each locking part continuously moves closer to the thread plug gauge and allows at least one abutting part to be located in the groove and abut against the groove. Step 2: For the relatively fixed connection fixing mechanism and force application mechanism, set the engaging part on the connecting part, and make the engaging part and the connecting part engage with each other; Step 3: Apply force to make the thread plug gauge rotate: Hold the force bar and apply a force to the force bar to rotate in the circumferential direction.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention includes a fixing mechanism sleeved on a column and fixed relative to it, and a force-applying mechanism mounted on the fixing mechanism and extending outward at an angle to it. The force-applying mechanism extends the lever arm that applies force to the fixing mechanism, thereby driving the fixing mechanism to rotate the thread plug gauge. This reduces the operator's workload and ensures stable force application. Consequently, it improves inspection efficiency and protects the thread plug gauge or the threaded hole of the workpiece. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of a thread plug gauge in the prior art; Figure 2 This is a schematic diagram of the overall structure of a thread plug gauge from another perspective in the prior art. Figure 3 This is a schematic diagram of the overall structure of the thread plug gauge tightening device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the locking part in an embodiment of the present invention. Figure 5 This is a schematic diagram of the overall structure of the force-applying mechanism in an embodiment of the present invention.

[0017] In the above figures: thread plug gauge 10, column 101, groove 1011, go end 102, stop end 103, thread plug gauge tightening device 100, fixing mechanism 1, sleeve 11, locking part 12, abutment part 121, threaded connector 122, tightening part 123, connecting part 13, force-applying mechanism 2, locking part 21, force-applying rod 22, anti-slip sleeve 23. Detailed Implementation

[0018] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] To better understand the purpose, structure, and function of this invention, the following detailed description of a thread plug gauge tightening device and its tightening method is provided in conjunction with the accompanying drawings.

[0020] like Figure 1 , 2As shown, the thread plug gauge 10 generally includes a cylinder 101. A go end 102 is provided at one end of the cylinder 101 for detecting the minimum limit size of the aperture of a threaded hole (not shown in the figure), and a no-go end 103 is provided at the other end of the cylinder 101 for detecting the maximum limit size of the threaded hole. It should be noted that the basis for a qualified threaded hole is that the go end 102 completely passes through the threaded hole, and the no-go end 103 enters more than one-fourth.

[0021] In the prior art, as Figure 1 , 2 shown, the cross-section of the cylinder 101 is provided with a polygonal structure. At the same time, at least one inwardly recessed groove 1011 is provided on the cylinder 101. In this setting method, when it is necessary to detect a threaded hole, the staff holds the cylinder 101 by hand and abuts the go end 102 against the threaded hole. At this time, a force is applied to the cylinder 101 to make the cylinder 101 rotate. During this process, the go end 102 will continuously enter the threaded hole. Then, the go end 102 is screwed out of the threaded hole, and the no-go end 103 is screwed into the threaded hole. Thus, the detection of the threaded hole is completed.

[0022] Figure 3 Schematically shows a thread plug gauge screwing device according to the present invention. In the embodiment as Figure 2 shown, the thread plug gauge screwing device 100 includes a fixing mechanism 1. The fixing mechanism 1 is sleeved on the cylinder 101 and allows to be fixed relative to the cylinder 101.

[0023] At the same time, as Figure 3 shown, a force applying mechanism 2 is further provided on the fixing mechanism 1. The force applying mechanism 2 extends outward at an included angle α with the fixing mechanism 1. Preferably, as Figure 3 shown, the included angle α is set to 90 degrees. By this means, the force applying mechanism 2 can extend the lever arm for applying a force to the fixing mechanism 1 to drive the fixing mechanism 1 to drive the thread plug gauge 10 to rotate.

[0024] In this setting method, when it is necessary to use the device 100 to screw the thread plug gauge 10, first, the fixing mechanism 1 is sleeved on the thread plug gauge 10 and the fixing mechanism 1 and the thread plug gauge 10 are fixed relative to each other. At the same time, the force applying mechanism 2 is provided on the fixing mechanism 1 and the force applying mechanism 2 and the fixing mechanism 1 are connected at a 90-degree angle.

[0025] At this time, the operator holds the force-applying mechanism 2 and applies a circumferential rotational force to it. During this process, the force is transmitted along the force-applying mechanism 2 to the fixing mechanism 1, thereby causing the fixing mechanism 1 to rotate synchronously. In this process, the fixing mechanism 1 will synchronously drive the thread plug gauge 10 to rotate until the go end 102 or the stop end 103 of the thread plug gauge 10 is screwed into the threaded hole.

[0026] In one embodiment, such as Figure 3 As shown, the fixing mechanism 1 includes a sleeve 11 configured to allow selective fitting onto the cylinder 101. At least one locking part 12 is also provided on the sleeve 11, configured to allow movement along the sleeve 11 so that it can be selectively positioned within the groove 1011. In this way, the sleeve 11 and the threaded plug gauge 10 can be relatively fixed together by the locking part 12, and the force applied to the sleeve 11 can be transmitted to the threaded plug gauge 10 along the locking part 12.

[0027] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the fixing mechanism 1 also includes a connecting portion 13, which is disposed at the end of the sleeve 11 and extends along the axial direction of the sleeve 11. In this embodiment, the connecting portion 13 is configured to allow it to be selectively fixed relative to the force-applying mechanism 2.

[0028] Specifically, such as Figure 3 As shown, the cross-section of the connecting portion 13 is configured as a polygonal structure. Meanwhile, as... Figure 3 , 5 As shown, the force-applying mechanism 2 includes a locking portion 21, which is configured to allow the connecting portion 13 to engage with each other. Furthermore, the force-applying mechanism 2 also includes a force-applying rod 22 that is fixed to the locking portion 21 and extends outward. This arrangement allows the force-applying mechanism 2 and the fixing mechanism 1 to be detachably connected. This facilitates the storage of the device 100.

[0029] According to a preferred embodiment of the present invention, such as Figure 3 , 5 As shown, an anti-slip sleeve 23 is also provided on the force-applying rod 22. In this embodiment, the anti-slip sleeve 23 is made of rubber to increase the friction between the worker and the force-applying rod 22 when the worker applies force to the force-applying rod 22.

[0030] In one embodiment, such as Figure 3 As shown, the axial length "L" of the sleeve 11 is configured to extend radially outward from the through end 102 and the stop end 103 into the groove 1011. Specifically, as... Figure 2 , 3As shown, the axial length "L" of the sleeve 11 is set to be greater than the length "H1" from the stop end 103 to the groove 1011 but less than the length "H2" from the stop end 103 to the end of the column 101. It should be noted that the length "H1" from the stop end 103 to the groove 1011 is greater than the length "H3" from the through end 102 to the groove 1011.

[0031] In this way, when the through end 102 is needed, the sleeve 11 can accommodate the stop end 103 and the column 101, and the groove 1011 on the column 101 can correspond to the locking part 12 on the sleeve 11. However, when the stop end 103 is needed, the sleeve 11 can accommodate the through end 102 and the column 101, and the groove 1011 on the column 101 can correspond to the locking part 12 on the sleeve 11.

[0032] In one embodiment, such as Figure 3 As shown, the locking part 12 includes an abutment 121, which is configured as a columnar structure and is allowed to be located in the groove 1011 and can abut against the groove 1011.

[0033] In addition, such as Figure 3 As shown, a threaded connector 122 is also provided on the abutment member 121. The threaded connector 122 passes through the sleeve 11 and is threadedly engaged with the sleeve 11. It should be noted that the sleeve 11 is provided with a threaded hole (not shown in the figure) that allows it to engage with the threaded connector 122.

[0034] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the locking part 12 also includes a screwing member 123 disposed at the end of the threaded connector 122, which provides a fulcrum for the force application. In this way, the threaded connector 122 can be driven to move along the sleeve 11 in a labor-saving manner, so that the abutment 121 and the groove 1011 abut against each other, thereby making the sleeve 11 stably connected to the thread plug gauge 10.

[0035] In one embodiment, such as Figure 3 , 4 As shown, three locking parts 12 are provided, and the three locking parts 12 are located on the same plane of the sleeve 11, allowing the locking parts 12 to be distributed circumferentially on the sleeve 11 at equal intervals. In this way, the contact area between the locking parts 12 and the thread plug gauge 10 and the force-bearing points on the thread plug gauge 10 can be increased. As a result, a secure connection can be made between the fixing mechanism 1 and the thread plug gauge 10.

[0036] According to a preferred embodiment of the present invention, such as Figure 3 , 4 As shown, the locking parts 12 are arranged in two sets, with the two sets of locking parts 12 distributed parallel to each other along the axis of the sleeve 11, and allowing the two sets of locking parts 12 to be misaligned with each other. In this way, the contact area between the locking parts 12 and the thread plug gauge 10 and the force-bearing points on the thread plug gauge 10 can be further increased. Thus, the connection between the fixing mechanism 1 and the thread plug gauge 10 can be further strengthened.

[0037] The operation of the thread plug gauge tightening device 100 according to the present invention is as follows.

[0038] First, the sleeve 11 is fitted onto the thread plug gauge 10, and force is applied to each of the screwing parts 123 in sequence, causing each locking part 12 to continuously move closer to the thread plug gauge 10, and allowing at least one abutting part 121 to be located in the groove 1011 and abut against the groove 1011. At the same time, the engaging part 21 is provided on the connecting part 13, and the engaging part 21 and the connecting part 13 are engaged with each other. Thus, the arrangement of the device 100 is completed.

[0039] At this time, the operator holds the force-applying rod 22 and applies a circumferential rotational force to it. During this process, the force is transmitted along the force-applying rod 22 to the engaging part 21, thereby driving the engaging part 21 to rotate synchronously with the force-applying rod 22, which in turn causes the sleeve 11 to rotate synchronously. In this process, the sleeve 11 synchronously drives the thread plug gauge 10 to rotate until the go end 102 or stop end 103 of the thread plug gauge 10 is screwed into the threaded hole.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A thread plug gauge tightening device, wherein the thread plug gauge (10) includes a column (101) and a through end (102) and a stop end (103) respectively disposed at both ends of the column (101) for detecting the threaded hole. in, The cross-section of the column (101) is provided with a polygonal structure, and at least one inwardly recessed groove (1011) is provided on the column (101). The device (100) is characterized in that it includes a fixing mechanism (1) sleeved on the column (101) and allowing it to be fixed relative to the column (101), and a force-applying mechanism (2) disposed on the fixing mechanism (1) and extending outward from the fixing mechanism (1) at an angle, the force-applying mechanism (2) being used to extend the lever arm that applies force to the fixing mechanism (1) so as to drive the fixing mechanism (1) to rotate the thread plug gauge (10).

2. The thread plug gauge tightening device according to claim 1, characterized in that, The fixing mechanism (1) includes a sleeve (11) selectively fitted onto the column (101) and at least one locking part (12) passing through the sleeve (11), the locking part (12) being configured to allow movement along the sleeve (11) so that it can be selectively positioned in the groove (1011).

3. The thread plug gauge tightening device according to claim 2, characterized in that, The fixing mechanism (1) further includes a connecting portion (13) disposed at the end of the sleeve (11) and allowed to extend along its axial direction, the connecting portion (13) being configured to allow it to be fixed relative to the force-applying mechanism (2) in a selective manner.

4. The thread plug gauge tightening device according to claim 3, characterized in that, The cross section of the connecting part (13) is set as a polygonal structure. The force-applying mechanism (2) includes a locking part (21) disposed on the connecting part (13) and allowing it to engage with the connecting part (13), and a force-applying rod (22) fixed to the locking part (21) and extending outward.

5. The thread plug gauge tightening device according to claim 4, characterized in that, An anti-slip sleeve (23) is also provided on the force-applying rod (22) to increase the friction between the force-applying rod (22) and the force-applying rod (22) when the force is applied.

6. The thread plug gauge tightening device according to claims 3-5, characterized in that, The axial length "L" of the sleeve (11) is configured to extend from the through end (102) and the stop end (103) to the radially outer side of the groove (1011).

7. The thread plug gauge tightening device according to claim 6, characterized in that, The locking part (12) includes an abutment (121) that allows it to abut against the groove 1011, and a threaded connector (122) extending along the abutment (121), the threaded connector (122) passing through the sleeve (11) and threadedly engaging with the sleeve (11).

8. The thread plug gauge tightening device according to claim 7, characterized in that, The locking part (12) is provided in three parts, and the locking parts (12) are distributed circumferentially on the sleeve (11) at equal intervals.

9. The thread plug gauge tightening device according to claim 8, characterized in that, The locking part (12) is arranged in two sets, and the two sets of locking parts (12) are distributed along the axis of the sleeve (11) in a parallel manner, and the two sets of locking parts (12) are allowed to be misaligned with each other, in order to increase the contact area between the locking part (12) and the thread plug gauge (10) and the force point located on the thread plug gauge (10).

10. A method for tightening a threaded plug gauge, characterized in that, The screwing method is implemented using the screwing device according to any one of claims 1 to 9, and includes the following steps: Step 1: With respect to the fixed connection and fixing mechanism (1) and the thread plug gauge (10), put the sleeve (11) on the thread plug gauge (10) and apply force to each screwing part (123) in sequence, so that each locking part (12) continuously moves close to the thread plug gauge (10) and allows at least one abutting part (121) to be located in the groove (1011) and abut against each other with the groove (1011); Step 2: With respect to the fixed connection fixing mechanism (1) and the force application mechanism (2), the engaging part (21) is set on the connecting part (13), and the engaging part (21) and the connecting part (13) are engaged together; Step 3: Apply force to rotate the thread plug gauge (10): Hold the force bar (22) and apply a force to the force bar (22) to rotate in the circumferential direction.

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