Thread testing fixture
By designing the depth measurement structure of the thread inspection tool, including sliding sleeves, slide grooves and guides, the problem of inaccurate measurement of the effective depth of the thread in the prior art is solved, high accuracy and high efficiency measurement is achieved, and a variety of measurements are supported. Specification thread detection.
Patent Information
- Application Number
- CN202420788428.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The prior art cannot accurately measure the effective depth of threads, usually requires replacement of tools, and the measurement is not reliable enough.
A thread inspection tool is designed, including handheld parts, threaded thread sections and thread-retaining sections. The effective length of the thread is measured simultaneously through the depth measurement structure (sliding sleeves, chutes, guides and guide balls) to ensure the accuracy of the measurement and efficiency.
It realizes effective thread depth measurement with high accuracy and high efficiency, without changing detection tools, can detect internal threads of various specifications, and reduce sliding resistance through the coordination between the guide and the chute, and smooth operation.
Smart Images
Figure CN222165930U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thread processing, in particular to a thread inspection tool. Background Art
[0002] For the detection of internal threads in machined parts holes, the common method is to use a thread plug gauge to detect whether the processing parameters such as the thread pitch diameter, pitch and thread angle meet the design standards. Two plug gauges are usually used for thread detection, namely the thread through gauge and the thread stop gauge. For a qualified threaded hole, the thread through gauge can be screwed in smoothly, while the thread stop gauge cannot be screwed in; otherwise, it is an unqualified threaded hole. Therefore, the existing ordinary thread plug gauge can be used to measure the thread hole's own parameters such as the thread pitch diameter.
[0003] The effective depth of the thread is usually measured using a vernier caliper, etc. However, a vernier caliper can usually measure the depth of the hole, but cannot directly measure the effective depth of the thread, so this measurement method is not reliable. Utility Model Content
[0004] The purpose of the utility model is to provide a thread gauge to solve the above-mentioned technical problems, which can synchronously measure the effective length of the internal thread to be measured through a depth measurement structure with high accuracy, and does not require the replacement of other detection tools, so as to improve the efficiency of synchronous measurement.
[0005] In view of this, the utility model provides a thread gauge, comprising a hand-held part and a through thread section and a stop thread section arranged at both ends of the hand-held part, the through thread section matches the internal thread to be measured and can be threadedly connected to each other, the stop thread section cannot be threadedly connected to the internal thread to be measured, and a depth measuring structure is arranged on the hand-held part, and the depth measuring structure is used to synchronously measure the effective length of the internal thread to be measured.
[0006] In this technical solution, the effective length of the internal thread to be measured can be synchronously measured through the depth measurement structure with high accuracy, and there is no need to replace other detection tools. Synchronous measurement improves efficiency.
[0007] Furthermore, the depth measurement structure includes:
[0008] A sliding sleeve, wherein the sliding sleeve is slidably arranged on the hand-held part, the outer diameter of the sliding sleeve is larger than the major diameter of the through-thread section, and the hand-held part is engraved with scales along the length direction;
[0009] A slide groove, the slide groove being provided on the slide groove surface along the length direction of the hand-held part;
[0010] The guide member is fixedly connected to the sliding sleeve, and the guide member can extend into the sliding groove and slide in cooperation with the sliding groove.
[0011] In the present technical solution, when the internal thread to be measured and the stop thread section cannot be screwed together, the other end is replaced and the through thread section is screwed into the internal thread hole to be measured until it cannot be screwed in. At this time, the lower end of the sleeve is received by the opening of the internal thread hole to be measured, and the upper end of the sleeve indicates the position of the scale on the handheld part, that is, the effective length of the internal thread to be measured. The depth measurement structure makes the sliding of the sleeve on the handheld part more stable and reliable through the cooperation of the guide part and the slide groove.
[0012] Furthermore, a guide threaded hole is provided on the sleeve in a direction perpendicular to the axis, and a guide external thread matching the guide threaded hole is provided on the guide member. The guide external thread and the guide threaded hole are threadedly connected to each other so that the guide member is fixedly connected to the sleeve.
[0013] Furthermore, the guide member includes an extension rod on one side facing the slide groove, a guide ball is rotatably provided outside the extension rod, and two sides of the guide ball are in contact with the side walls of the slide groove.
[0014] In this technical solution, the guide ball is in point contact with the side wall of the slide groove, which can reduce the sliding resistance of the guide member and make the depth measurement structure operate more smoothly.
[0015] Furthermore, the through-thread section and the stop-thread section are both detachably connected to the hand-held portion.
[0016] In this technical solution, the thread inspection tool can detect internal threads of various specifications.
[0017] Furthermore, the unit of the scale on the handheld part is centimeter, and the distance between two adjacent scales is one centimeter.
[0018] Furthermore, the maximum thread parameter that can be used by the through-thread segment is also printed on the hand-held portion, and the threaded hole with the maximum thread parameter is smaller than the outer diameter of the sliding sleeve.
[0019] In the present technical solution, by engraving the maximum replaceable thread parameter, it is ensured that the threaded hole of the replaced through-thread section is smaller than the outer diameter of the sleeve, so that the through-thread section of the sleeve can be screwed into the internal thread hole to be measured until it cannot be screwed in anymore, and the lower end of the sleeve can be received by the end face of the internal thread hole to be measured, thereby ensuring that the effective length of the thread can be measured.
[0020] The beneficial effects of the utility model are:
[0021] 1. The depth measurement structure makes the sliding of the sliding sleeve on the handheld part more stable and reliable through the cooperation of the guide member and the sliding groove.
[0022] 2. The guide ball and the side wall of the slide groove are in point contact, which can reduce the sliding resistance of the guide part and make the depth measurement structure operate more smoothly.
[0023] 3. Both the through thread section and the stop thread section are detachably connected to the handheld portion, enabling the thread gauge to detect internal threads of various specifications.
[0024] 4. By engraving the maximum thread parameter that can be replaced, it is ensured that the threaded hole of the replaced through-thread section is smaller than the outer diameter of the sleeve, so that the through-thread section of the sleeve can be screwed into the internal thread hole to be measured until it cannot be screwed in, and the lower end of the sleeve can be received by the end face of the internal thread hole to be measured, ensuring that the effective length of the thread can be measured. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a three-dimensional diagram of the utility model;
[0026] Figure 2 It is an exploded view of the utility model;
[0027] Figure 3 is a stereogram of the guide;
[0028] Figure 4 It is a front view of the utility model;
[0029] Figure 5 It is a stereogram from another viewing angle of the utility model.
[0030] The symbols in the figure are:
[0031] 1. Hand-held part; 2. Through-thread section; 3. Stop-thread section; 4. Depth measurement structure; 5. Sliding sleeve; 6. Sliding groove; 7. Guide piece; 8. Guide thread hole; 9. Guide external thread; 10. Extension rod; 11. Guide ball; 12. Maximum thread parameter; 13. Scale. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.
[0033] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0035] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.
[0036] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.
[0037] Embodiment 1:
[0038] like Figure 1-4As shown, a thread gauge comprises a handheld portion 1 and a through thread segment 2 and a stop thread segment 3 arranged at both ends of the handheld portion 1, wherein the through thread segment 2 matches the internal thread to be measured and can be threadedly connected to each other, and the stop thread segment 3 cannot be threadedly connected to the internal thread to be measured, and a depth measuring structure 4 is arranged on the handheld portion 1, and the depth measuring structure 4 is used to synchronously measure the effective length of the internal thread to be measured.
[0039] The effective length of the internal thread to be measured can be measured synchronously through the depth measurement structure 4 with high accuracy, and there is no need to replace other detection tools. Synchronous measurement improves efficiency.
[0040] The depth measuring structure 4 includes a sleeve 5, a slide groove 6 and a guide 7. The sleeve 5 is slidably arranged on the handheld part 1, and the outer diameter of the sleeve 5 is larger than the major diameter of the through-thread section 2. The handheld part 1 is engraved with a scale 13 along the length direction; the slide groove 6 is opened on the surface of the slide groove 6 along the length direction of the handheld part 1; the guide 7 is fixedly connected to the sleeve 5, and the guide 7 can extend into the slide groove 6 and slide in cooperation with the slide groove 6. When the internal thread to be measured cannot be screwed with the stop thread section 3, the through-thread section 2 is screwed into the internal thread hole to be measured until it cannot be screwed in. At this time, the lower end of the sleeve 5 is received by the internal thread hole to be measured, and the upper end of the sleeve 5 indicates the position of the scale 13 on the handheld part 1, that is, the effective length of the internal thread to be measured. The depth measuring structure 4 makes the sliding of the sleeve 5 on the handheld part 1 more stable and reliable through the cooperation of the guide 7 and the slide groove 6.
[0041] Embodiment 2:
[0042] like Figure 1-4 As shown, a guide threaded hole 8 is opened on the sleeve 5 in a direction perpendicular to the axis, and a guide external thread 9 matching the guide threaded hole 8 is provided on the guide member 7. The guide external thread 9 and the guide threaded hole 8 are threadedly connected to each other so that the guide member 7 is fixedly connected to the sleeve 5.
[0043] The guide member 7 includes an extension rod 10 on one side facing the chute 6, and a guide ball 11 is rotatably arranged outside the extension rod 10, and both sides of the guide ball 11 are in contact with the side wall of the chute 6. The guide ball 11 is in point contact with the side wall of the chute 6, which can reduce the sliding resistance of the guide member 7 and make the depth measurement structure 4 operate more smoothly.
[0044] The through thread section 2 and the stop thread section 3 are both detachably connected to the handheld portion 1. The thread inspection tool can detect internal threads of various specifications.
[0045] The unit of the scale 13 on the handheld part 1 is centimeters, and the distance between two adjacent scales 13 is one centimeter. Because the progress tolerance of the effective length of the thread in the design is usually more than one centimeter, there is no need to mark excessive scales 13 to complicate the reading.
[0046] Embodiment 3:
[0047] like Figure 5 As shown, the handheld part 1 is also engraved with the maximum thread parameter 12 that can be used for the through-thread segment 2, and the threaded hole of the maximum thread parameter 12 is smaller than the outer diameter of the sleeve 5. By engraving the replaceable maximum thread parameter 12, it is ensured that the threaded hole of the replaced through-thread segment 2 is smaller than the outer diameter of the sleeve 5, so that the through-thread segment 2 of the sleeve 5 can be screwed into the internal thread hole to be measured until it cannot be screwed in, and the lower end of the sleeve 5 can be received by the end face of the internal thread hole to be measured, so as to ensure that the effective length of the thread can be measured.
[0048] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A thread gauge, characterized in that , comprising a handheld part (1) and a through-thread section (2) and a stop-thread section (3) arranged at both ends of the handheld part (1), the through-thread section (2) matches the internal thread to be measured and can be threadedly connected to each other, the stop-thread section (3) cannot be threadedly connected to the internal thread to be measured, and a depth measuring structure (4) is arranged on the handheld part (1), and the depth measuring structure (4) is used to synchronously measure the effective length of the internal thread to be measured; The depth measurement structure (4) comprises: A sliding sleeve (5), wherein the sliding sleeve (5) is slidably arranged on the hand-held portion (1), the outer diameter of the sliding sleeve (5) is larger than the major diameter of the through-thread section (2), and the hand-held portion (1) is engraved with scales (13) along the length direction; A slide groove (6), wherein the slide groove (6) is provided on the surface of the slide groove (6) along the length direction of the hand-held portion (1); A guide member (7) is fixedly connected to the sliding sleeve (5), and the guide member (7) can extend into the sliding groove (6) and slideably cooperate with the sliding groove (6).
2. A thread gauge according to claim 1, characterized in that: The sliding sleeve (5) is provided with a guide thread hole (8) in a direction perpendicular to the axis, and the guide member (7) is provided with a guide external thread (9) matching the guide thread hole (8). The guide external thread (9) and the guide thread hole (8) are threadedly connected to each other so that the guide member (7) and the sliding sleeve (5) are fixedly connected.
3. A thread gauge according to claim 2, characterized in that: The guide member (7) includes an extension rod (10) on the side facing the slide groove (6), and a guide ball (11) is rotatably arranged outside the extension rod (10), and both sides of the guide ball (11) are in contact with the side walls of the slide groove (6).
4. A thread gauge according to claim 3, characterized in that: The through-thread section (2) and the stop-thread section (3) are both detachably connected to the handheld portion (1).
5. A thread gauge according to claim 1, characterized in that: The unit of the scale (13) on the handheld part (1) is centimeters, and the distance between two adjacent scales (13) is one centimeter.
6. A thread gauge according to claim 4, characterized in that: The handheld part (1) is also engraved with the maximum thread parameter (12) that can be used by the through thread section (2), and the threaded hole with the maximum thread parameter (12) is smaller than the outer diameter of the sliding sleeve (5).