Detection ruler for detecting thread depth

Abstract

The utility model discloses a detection ruler for detecting the depth of a thread, which comprises a graduated scale shell, the graduated scale shell is hollow, and the outer side wall of the graduated scale shell is provided with scale marks; the main shaft is rotationally arranged in the calibrated scale shell, a detection head is detachably arranged at the bottom of the main shaft, the lower end of the detection head extends out of the lower side of the calibrated scale shell, an external thread is arranged on the outer side face of the lower portion of the detection head, and a rotating shaft is arranged on the upper portion of the main shaft in a sliding mode; the end cover is fixedly arranged at the upper end of the graduated scale shell, and a ball bearing is arranged in the end cover; the hand wheel is arranged on the upper side of the end cover, and the hand wheel is connected with the rotating shaft and can drive the rotating shaft to rotate. The utility model can solve the problems that the existing indirect measurement method for detecting the depth of a threaded hole is lack of intuition, an operator is difficult to quickly judge the depth of a thread, and the operation is complicated.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, in particular to a detection ruler for detecting thread depth. Background Art

[0002] In the fields of machinery manufacturing and automobile parts production, the processing quality of threads is directly related to the performance and reliability of products. Thread depth is an important parameter to measure thread quality, which affects the connection strength, sealing performance and appearance quality of threads. Therefore, accurate and efficient thread depth detection technology is crucial in the production process. There are strict depth requirements for each threaded hole in automotive parts. In order to ensure the functionality of the product, the thread generally needs to meet sufficient effective depth to ensure the use requirements during subsequent assembly. Therefore, it is very necessary to detect the effective depth of threaded holes. At present, indirect methods are mostly used to measure thread depth, but the operation is more complicated, and when measuring small-sized or high-precision threads, the accuracy is not high, it is inconvenient to use and lacks a certain degree of accuracy. It is not intuitive enough and cannot effectively cooperate with the debugging of products. Utility Model Content

[0003] The utility model provides a detection ruler for detecting thread depth, which can solve the problems that the existing indirect measurement method for detecting the depth of threaded holes lacks intuitiveness, is difficult for operators to quickly judge the thread depth and is complicated to operate.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detection ruler for detecting thread depth, comprising a scale housing, the scale housing is hollow, and scale lines are arranged on the outer side wall of the scale housing; a main shaft, the main shaft is rotatably arranged inside the scale housing, a detection head is detachably arranged at the bottom of the main shaft, the lower end of the detection head extends out from the lower side of the scale housing, and the lower outer side surface of the detection head is provided with an external thread, and a rotating shaft is slidably arranged on the upper part of the main shaft; an end cover is fixedly arranged at the upper end of the scale housing, a ball bearing is arranged in the end cover, and the ball bearing is sleeved on the outer side wall of the rotating shaft; a handwheel is arranged on the upper side of the end cover, the handwheel is connected to the rotating shaft and can drive the rotating shaft to rotate, so as to adapt to the detection of threaded holes of different specifications, improve the versatility of the tool, be simple to operate, read the results quickly, and can significantly improve the measurement efficiency and shorten the production cycle.

[0005] Preferably, the cross-section of the lower end of the rotating shaft is hexagonal in shape, and a mounting hole matching the rotating shaft is provided in the main shaft, and the rotating shaft can slide up and down along the mounting hole.

[0006] Preferably, a washer is provided on the upper side of the main shaft, and a retaining ring is sleeved on the outer wall of the rotating shaft between the ball bearing and the washer. The retaining ring and the rotating shaft are clearance-matched, and the washer can flexibly adjust the use range of the detection ruler.

[0007] Preferably, a truncated table is provided at the upper end of the spindle, and before detection, the lower end face of the truncated table is aligned with the zero scale line of the scale line, so that the operator can directly read the data.

[0008] Preferably, an elastic pin is passed through the lower end of the main shaft, and the elastic pin connects the main shaft and the detection head, which is convenient for installation and replacement of the detection head.

[0009] Preferably, a compression spring is sleeved on the outer side wall of the main shaft, the lower end of the compression spring abuts against the inner side wall of the scale housing, and the upper end of the compression spring abuts against the bottom of the truncated table.

[0010] Preferably, a pin is inserted into the upper side of the handwheel, anti-slip grooves are provided on the outer side wall of the handwheel, a set screw against the rotating shaft is laterally inserted into the lower end of the handwheel, and the handwheel is fixed to the rotating shaft by the set screw, so that the operator can rotate it for measurement.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The structure is simple, the operation is convenient, the operation is convenient, the measurement is intuitive, the repetition accuracy is high, the results are read quickly, and the measurement efficiency can be significantly improved, the production cycle can be shortened, the detection accuracy can be improved, and the tool can be adapted to threaded holes of different specifications. The versatility of the tool is improved, and the existing indirect measurement method for detecting the depth of threaded holes can be solved, resulting in a lack of intuitiveness, and the operator is difficult to quickly judge the thread depth and the operation is complicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a main cross-sectional structural diagram of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the main shaft of the utility model.

[0017] Reference numerals:

[0018] 1. Handwheel, 2. Set screw, 3. End cover, 4. Ball bearing, 5. Retaining ring, 6. Rotating shaft, 7. Washer, 8. Spindle, 81. Mounting hole, 9. Compression spring, 10. Scale housing, 101. Scale line, 11. Elastic pin, 12. Detection head, 13. Latch, 14. Anti-slip pattern. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] like Figure 1-4 As shown, the utility model solves the problem that the existing indirect measurement method for detecting the depth of threaded holes lacks intuitiveness, the operator is difficult to quickly judge the thread depth and the operation is complicated, and provides the following technical solutions: a detection ruler for detecting the thread depth, comprising a scale housing 10, the scale housing 10 is hollow, and scale lines 101 are arranged on the outer wall of the scale housing 10; a spindle 8, the spindle 8 is rotatably arranged inside the scale housing 10, and a detection head 12 is detachably arranged at the bottom of the spindle 8, and the lower end of the detection head 12 is extended from the bottom of the scale housing 10 The measuring head 12 is extended outward from the side, and the lower outer side surface of the detecting head 12 is provided with an external thread, and the upper part of the main shaft 8 is slidably provided with a rotating shaft 6; the end cover 3 is fixedly arranged on the upper end of the scale housing 10, and a ball bearing 4 is arranged in the end cover 3, and the ball bearing 4 is sleeved on the outer side wall of the rotating shaft 6; the hand wheel 1 is arranged on the upper side of the end cover 3, and the hand wheel 1 is connected with the rotating shaft 6 and can drive the rotating shaft 6 to rotate, so as to adapt to the detection of threaded holes of different specifications, improve the versatility of the tool, and is easy to operate and read the results quickly, which can significantly improve the measurement efficiency and shorten the production cycle.

[0021] In this embodiment, if Figure 4 As shown, the cross section of the lower end of the rotating shaft 6 is in a hexagonal shape, and a mounting hole 81 matching the rotating shaft 6 is provided in the main shaft 8, and the rotating shaft 6 can slide up and down along the mounting hole.

[0022] In this embodiment, if Figure 1 As shown, a washer 7 is provided on the upper side of the main shaft 8, and a retaining ring 5 is sleeved on the outer wall of the rotating shaft 6 between the ball bearing 4 and the washer 7. The retaining ring 5 is clearance-matched with the rotating shaft 6, and the washer 7 can flexibly adjust the use range of the detection ruler.

[0023] In this embodiment, if Figure 4 As shown, a truncated cone 82 is disposed at the upper end of the spindle 8. Before detection, the lower end face of the truncated cone 82 is aligned with the zero scale line of the scale line 101, so that the operator can directly read the data.

[0024] In this embodiment, if Figure 1 As shown, an elastic pin 11 is passed through the lower end of the main shaft 8, and the elastic pin 11 connects the main shaft 8 and the detection head 12, which is easy to install and replace the detection head.

[0025] In this embodiment, if Figure 1 As shown, a compression spring 9 is sleeved on the outer wall of the main shaft 8 , the lower end of the compression spring 9 abuts against the inner wall of the scale housing 10 , and the upper end of the compression spring 9 abuts against the bottom of the truncated table 82 .

[0026] In this embodiment, if Figure 3 As shown, a latch 13 is inserted into the upper side of the handwheel 1, an anti-slip pattern 14 is provided on the outer side wall of the handwheel 1, a set screw 2 is laterally inserted into the lower end of the handwheel 1 to abut against the rotating shaft 6, and the handwheel 1 is fixed to the rotating shaft 6 by the set screw 2, so that the operator can rotate it for measurement.

[0027] In this embodiment, if Figure 1 As shown, place the part to be measured on the test bench, take out the measuring ruler, check the zero degree of the measuring ruler and the size of the measuring head 12, select the measuring head 12 corresponding to the part and connect it to the spindle 8 through the elastic pin 11; then screw the end of the measuring head 12 into the measured thread, rotate the handwheel 1 along the forward direction of the thread, at this time the end face of the ruler housing 10 fits with the top surface of the measured threaded hole, continue to rotate the handwheel 1 until the measuring head 12 reaches the bottom of the thread, read the scale on the ruler, which is the effective depth of the thread. After the measurement is completed, rotate the handwheel 1 in the opposite direction to screw the measuring head 12 out of the threaded hole, and the spindle 8 returns to the initial state under the action of the spring 9 to end the test.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A measuring ruler for detecting thread depth, characterized in that: include: A scale housing (10), the scale housing (10) being hollow, and scale lines (101) being arranged on the outer side wall of the scale housing (10); A main shaft (8), the main shaft (8) is rotatably arranged inside the scale housing (10), a detection head (12) is detachably arranged at the bottom of the main shaft (8), the lower end of the detection head (12) protrudes from the lower side of the scale housing (10), and the lower outer side surface of the detection head (12) is provided with an external thread, and a rotating shaft (6) is slidably arranged on the upper part of the main shaft (8); An end cover (3) is fixedly arranged on the upper end of the scale housing (10), a ball bearing (4) is arranged inside the end cover (3), and the ball bearing (4) is sleeved on the outer side wall of the rotating shaft (6); A hand wheel (1) is arranged on the upper side of the end cover (3); the hand wheel (1) is connected to the rotating shaft (6) and can drive the rotating shaft (6) to rotate.

2. The thread depth detection ruler according to claim 1, characterized in that: The cross section of the lower end of the rotating shaft (6) is in a hexagonal shape, and a mounting hole (81) matching the rotating shaft (6) is provided in the main shaft (8).

3. The thread depth detection ruler according to claim 1, characterized in that: A washer (7) is arranged on the upper side of the main shaft (8), a retaining ring (5) is sleeved on the outer side wall of the rotating shaft (6) between the ball bearing (4) and the washer (7), and the retaining ring (5) is clearance-matched with the rotating shaft (6).

4. The detecting ruler for detecting thread depth according to claim 1, characterized in that: A truncated cone (82) is provided at the upper end of the main shaft (8), and before detection, the lower end surface of the truncated cone (82) is aligned with the zero scale line of the scale line (101).

5. The detecting ruler for detecting thread depth according to claim 1, characterized in that: An elastic pin (11) is inserted through the lower end of the main shaft (8), and the elastic pin (11) connects the main shaft (8) and the detection head (12).

6. The measuring ruler for detecting thread depth according to claim 4, characterized in that: A compression spring (9) is sleeved on the outer wall of the main shaft (8), the lower end of the compression spring (9) abuts against the inner wall of the scale housing (10), and the upper end of the compression spring (9) abuts against the bottom of the truncated table (82).

7. The detecting ruler for detecting thread depth according to claim 1, characterized in that: A latch pin (13) is inserted into the upper side of the hand wheel (1), an anti-slip pattern (14) is provided on the outer side wall of the hand wheel (1), and a set screw (2) that abuts against the rotating shaft (6) is inserted transversely into the lower end of the hand wheel (1).

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