CN221223649U

CN221223649U - Thread measuring device

Info

Publication number: CN221223649U
Application number: CN202323003476.4U
Authority: CN
Inventors: 杨日平; 刘宏程; 杨湘龙
Original assignee: Changsha Heijingang Industrial Co Ltd
Current assignee: Changsha Heijingang Industrial Co Ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-06-25
Anticipated expiration: 2033-11-07

Abstract

The application discloses a thread measuring device, which comprises a base and a bracket component arranged on the base; the movable platform is arranged on the bracket component, can rotate up and down by a certain angle and can move along the direction perpendicular to the rotating shaft; the angle measuring mechanism is arranged on the bracket component and connected with the mobile platform and is used for measuring the rotation angle of the mobile platform; the depth measuring mechanism is arranged on the bracket component and connected with the mobile platform and is used for measuring the moving depth of the mobile platform; the height measuring mechanism is arranged on the moving platform and is connected with the contact assembly, the contact assembly can move up and down to be used for contacting a position to be measured, and the height ruler is used for measuring the moving height of the contact assembly. The thread measuring device can directly measure the thread cone angle, the tooth distance, the tooth height and the tooth angle of the internal thread and the external thread of the part, can meet the data measurement of the straight thread and the taper thread with different angles, and has the advantages of good universality, convenient use and low measuring tool cost.

Description

Thread measuring device

Technical Field

The application relates to the technical field of thread measuring tools, in particular to a thread measuring device.

Background

The threads of the connecting parts of the domestic and foreign mining equipment are various and have a plurality of nonstandard threads, the threads of the parts are required to be accurately measured frequently for the purpose of good adaptation of products of the parts, particularly, the internal thread data of the parts are measured, the measuring tool is affected by the aperture of an internal screw hole, and the situation that the measuring tool cannot effectively extend into the screw hole to cause difficult measurement frequently occurs. The existing measuring means adopts the method that internal threads are measured after the parts are cut, the measuring process is complex, the use is inconvenient, the parts are damaged, and the parts cannot be used for the second time.

Therefore, how to provide a thread measuring tool capable of directly measuring internal and external threads is a technical problem to be solved by those skilled in the art.

Disclosure of utility model

In order to solve the technical problems, the application provides the thread measuring device which can directly measure the thread cone angle, the tooth pitch, the tooth height and the tooth form angle of the internal thread and the external thread of the part, can meet the data measurement of the straight thread and the taper thread with different angles, and has the advantages of good universality, convenient use and low measuring tool cost.

The technical scheme provided by the application is as follows:

a thread measurement device comprising a base and a bracket assembly disposed on the base;

The movable platform is arranged on the bracket component, can rotate up and down by a certain angle and can move along the direction perpendicular to the rotating shaft;

the angle measuring mechanism is arranged on the bracket component and connected with the mobile platform and is used for measuring the rotation angle of the mobile platform;

The depth measuring mechanism is arranged on the bracket component and connected with the mobile platform and is used for measuring the moving depth of the mobile platform;

The height measuring mechanism is arranged on the moving platform and is connected with the contact assembly, the contact assembly can move up and down to be used for contacting a position to be measured, and the height measuring mechanism is used for measuring the moving height of the contact assembly.

Further, the bracket component comprises a guide rail, a connecting rod, a support and a support plate, wherein the support and the support plate are arranged on the base;

One end of the guide rail is hinged with the support, and the other end of the guide rail is arranged on the connecting rod;

The two ends of the connecting rod are respectively arranged on the corresponding supporting plates and can move along the supporting plates so as to enable the guide rail to rotate;

The moving platform is mounted on the guide rail and can move along the guide rail.

Further, an adjusting nut is arranged on the guide rail and located on one side, close to the connecting rod, of the moving platform, and the end portion of the adjusting nut is connected with the moving platform and used for adjusting the moving distance of the moving platform.

Further, the support plate is provided with an arc hole, two ends of the connecting rod are respectively arranged in the corresponding arc holes and can move along the arc holes, two ends of the connecting rod are respectively provided with a fastener, and the fasteners are used for fixing the end parts of the connecting rod on the support plate.

Further, the depth measuring mechanism is a depth gauge, the depth gauge is arranged on the connecting rod, and the measuring end of the depth gauge is connected with the movable platform.

Further, the base of the height measuring mechanism is mounted on the moving platform through the locking block, the contact assembly is arranged on a ruler frame of the height measuring mechanism, and the ruler frame can move up and down to drive the contact assembly to contact a position to be measured.

Further, the contact assembly comprises a measuring rod and a measuring needle, one end of the measuring rod is installed on the height measuring mechanism and can move up and down, and the measuring needle is vertically fixed at the other end of the measuring rod and is used for contacting a position to be measured.

Furthermore, the measuring rod is in a straight shape;

Or the measuring rod is L-shaped.

Further, the angle measuring mechanism is an angle ruler, the horizontal edge of the right angle ruler of the angle ruler is fixed on the mobile platform, and the base ruler of the angle ruler is fixed on the supporting plate.

Further, the electric meter further comprises an indicator lamp, a conductive block and a power supply box, wherein the indicator lamp, the conductive block, the power supply box and the measuring needle are connected in series, the conductive block is used for contacting a piece to be measured, the piece to be measured can conduct electricity, and when the measuring needle contacts the piece to be measured, the circuit of the indicator lamp can be connected.

According to the thread measuring device provided by the utility model, the contact assembly can be positioned at a proper inclination angle by rotating the moving platform, the contact assembly can be positioned at a proper depth position by adjusting the moving platform to move along the direction vertical to the rotating shaft, the tooth distance of threads can be measured, the tooth depth can be measured by adjusting the upper and lower positions of the contact assembly, the thread pitches and the tooth type angles of the internal thread and the external thread can be calculated, the whole measuring process does not need to cut parts, the parts are not damaged, the thread cone angles, the tooth distances, the tooth heights and the tooth type angles of the internal thread and the external thread of the parts can be obtained directly through measurement and simple calculation, the data measurement of the straight thread and the taper threads with different angles can be satisfied, the universality is good, the use is convenient, the structure of the measuring device is small, the measuring tool can also be used for measuring on construction sites, and the measuring tool cost is low.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a screw thread measuring device according to an embodiment of the present application;

FIG. 2 is a schematic view of a screw thread measuring device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a thread measuring device according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a thread pitch measurement device according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a thread measuring device according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a thread measuring device according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a moving platform and an adjusting nut of a screw measuring device according to an embodiment of the present application;

FIG. 8 is a schematic view of a measuring rod of a screw thread measuring device according to an embodiment of the present application;

FIG. 9 is a schematic view of another embodiment of a measuring rod of a screw thread measuring device according to an embodiment of the present application;

fig. 10 is a circuit diagram of an indicator light of a screw thread measuring device according to an embodiment of the present application.

Reference numerals: 1a base, 2a moving platform, 3a support, 4 guide rails, 5 a connecting rod, 6a support plate, 7 an adjusting nut, 8 an arc hole, 9 a fastener, 10 a depth gauge, 11 a height gauge, 12 a base, 13 a locking block, 14 a measuring rod, 15 a measuring needle, 16 an angle gauge, 17 an indicator lamp, 18 a conductive block, 19 a power box, 20 a wire, 21 a part to be measured, 22 a clamping groove and 23 an annular boss.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the application to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the application, are included in the spirit and scope of the application which is otherwise, without departing from the spirit or scope thereof.

As shown in fig. 1 and 2, an embodiment of the present application provides a screw thread measuring device, including a base 1 and a bracket assembly provided on the base 1; the movable platform 2 is arranged on the bracket component, can rotate up and down by a certain angle and can move along the direction vertical to the rotating shaft; the angle measuring mechanism is arranged on the bracket component and connected with the mobile platform 2, and is used for measuring the rotation angle of the mobile platform 2; the depth measuring mechanism is arranged on the bracket component and connected with the mobile platform 2, and is used for measuring the moving depth of the mobile platform 2; the height measuring mechanism is arranged on the movable platform 2 and is connected with the contact assembly, the contact assembly can move up and down to be used for contacting a position to be measured, and the height measuring mechanism is used for measuring the moving height of the contact assembly.

According to the thread measuring device provided by the embodiment, the contact assembly can be positioned at a proper inclination angle by rotating the movable platform 2, the contact assembly can be positioned at a proper depth position by adjusting the movable platform 2 to move along the direction vertical to the rotation shaft, the tooth distance of threads can be measured, the tooth depth can be measured by adjusting the upper and lower positions of the contact assembly, the thread pitch and the tooth type angle of the internal thread and the external thread can be calculated, the whole measuring process does not need to split parts, the parts are not damaged, the thread cone angle, the tooth distance, the tooth height and the tooth type angle of the internal thread and the external thread of the parts can be obtained directly through measurement and simple calculation, the data measurement of the straight threads and the taper threads with different angles can be met, the universality is good, the use is convenient, the structure of the measuring device is small, the measuring tool can also be used for measuring on a construction site, and the measuring tool cost is low.

This example specifically illustrates the process of measuring thread taper angle, pitch, height and profile angle. As shown in fig. 3, the thread taper angle measurement process: firstly, correcting the moving platform 2 by adopting a zero-degree position of an angle measuring mechanism, so that the moving platform 2 is parallel to the thread axis of the part to be measured; then, the position of the movable platform 2 is moved along the direction perpendicular to the rotation axis, the height of the contact assembly is adjusted, the contact assembly is enabled to contact any crest of the screw thread, then the depth value of the contact assembly is recorded through the depth measuring mechanism, and the height value of the contact assembly is recorded through the height measuring mechanism; and then moving the moving platform 2 for a certain distance, adjusting the height of the contact assembly to enable the contact assembly to contact the other crest, recording the height value and the depth value of the position, calculating the height difference A and the depth difference B between the two measuring points according to the height value and the depth value of the position of the two measuring points, and calculating the thread cone angle alpha=arctan (A/B) of the measured thread according to the trigonometric function tanalpha=A/B.

As shown in fig. 4, the tooth pitch measurement process: according to the thread cone angle alpha, the mobile platform 2 is rotated until the inclination angle of the mobile platform 2 is consistent with the thread cone angle, namely, the rotation angle recorded by the angle measuring mechanism to the mobile platform 2 is alpha, the mobile platform 2 and the contact assembly are moved, the contact assembly is enabled to contact a first detection point I, the height value of the height measuring mechanism and the depth value of the depth measuring mechanism are recorded, then the contact assembly is withdrawn from the tooth-shaped groove and is moved to an adjacent tooth-shaped groove, after the height of the contact assembly measured by the height measuring mechanism is adjusted to be the same as the height of the first detection point, the mobile platform 2 is moved, the contact assembly is enabled to contact a second detection point II, then the depth value of the depth measuring mechanism is recorded, and according to the depth value measured by the depth measuring mechanism for two times, the depth difference A of the two detection points I and II is calculated, namely, the tooth pitch B is calculated by utilizing a trigonometric function B=COS alpha×A.

As shown in fig. 5, the tooth height measurement process: according to the thread cone angle alpha, the mobile platform 2 is rotated until the inclination angle of the mobile platform 2 is consistent with the thread cone angle, namely, the rotation angle recorded by the angle measuring mechanism to the mobile platform 2 is alpha, the mobile platform 2 and the contact component are moved, so that the contact component contacts any crest, the height value of the crest is recorded by the height measuring mechanism, then the mobile platform 2 and the contact component are moved, so that the contact component contacts the root of a tooth form groove (namely, the lowest point of the tooth form groove), then the height value of the root position is recorded by the height measuring mechanism, and the height difference h between the crest and the root is calculated according to the height values measured by the height measuring mechanism twice, namely, the tooth height.

As shown in fig. 6, the tooth form angle measurement process: firstly, correcting the moving platform 2 by adopting a zero-degree position of an angle measuring mechanism, so that the moving platform 2 is parallel to the thread axis of the part to be measured; moving the platform 2 and the contact component to enable the contact component to contact a first detection point on the side surface (namely the tooth surface) of the tooth-shaped groove, recording the depth value and the height value of the position, then moving the platform 2 and the contact component to enable the contact component to contact a second detection point on the side surface of the tooth-shaped groove, recording the depth value and the height value of the second detection point, and calculating a depth difference A and a height value difference B between the two detection points according to the depth value and the height value of the two detection point positions, wherein the tooth-shaped angle beta=angle gamma=arctan alpha=A/B. The method for measuring the angle of the other side surface of the tooth-shaped groove is consistent with the method described above, and will not be described here again.

The technical scheme is optimized in the embodiment, as shown in fig. 1 and 2, the bracket assembly comprises a guide rail 4, a connecting rod 5, and a support 3 and a support plate 6 which are arranged on the base 1; one end of the guide rail 4 is hinged with the support 3, and the other end of the guide rail 4 is arranged on the connecting rod 5; the two ends of the connecting rod 5 are respectively arranged on the corresponding supporting plates 6 and can move along the supporting plates 6 so as to enable the guide rail 4 to rotate; the moving platform 2 is mounted on the guide rail 4 and is movable along the guide rail 4.

Specifically, support 3 is fixed on base 1, is equipped with the pivot on the support 3, and the one end cover of guide rail 4 is established in the pivot, and the other end of guide rail 4 is fixed on connecting rod 5, and guide rail 4 is vertical state with connecting rod 5, and connecting rod 5 both ends are installed respectively on the backup pad 6 of both sides, and connecting rod 5 can be in backup pad 6 removal so that guide rail 4 can revolute the pivot and rotate, and guide rail 4 rotates and can drive the moving platform 2 on it and rotate, adjusts moving platform 2's inclination to adjustable height measuring mechanism and upper contact assembly's inclination. The movable platform 2 moves along the guide rail 4 and can drive the height measuring mechanism and the upper contact assembly thereof to move, so that the depth position of the contact assembly can be adjusted, and the contact assembly is positioned at a position to be detected with proper depth.

In order to facilitate the adjustment of the moving distance of the moving platform 2 along the guide rail 4, the guide rail 4 is provided with an adjusting nut 7, the adjusting nut 7 is located at one side of the moving platform 2 close to the connecting rod 5, and the end part of the adjusting nut 7 is connected with the moving platform 2 and used for adjusting the moving distance of the moving platform 2. Specifically, as shown in fig. 7, the mounting hole is formed in the moving platform 2, the guide rail 4 is mounted in the mounting hole, the clamping groove 22 is formed in the side wall of the moving platform 2 along the radial direction of the mounting hole, an annular boss 23 is correspondingly formed in one end, close to the moving platform 2, of the outer wall of the adjusting nut 7, the annular boss 23 of the adjusting nut 7 can be mounted in the clamping groove 22 in a matched mode, a threaded section is formed in one end, close to the connecting rod 5, of the guide rail 4, of the adjusting nut 7 is sleeved on the threaded section of the guide rail 4, and the adjusting nut 7 is screwed, because the annular boss 23 of the adjusting nut 7 is clamped in the clamping groove 22, the moving platform 2 can be driven to move along the guide rail 4, and therefore the moving distance of the moving platform 2 along the guide rail 4 can be adjusted. In order to facilitate screwing of the adjustment nut 7, the outer wall of the adjustment nut 7 is knurled.

In order to facilitate the movement of the two ends of the connecting rod 5 on the supporting plate 6, the supporting plate 6 is provided with arc holes 8, the two ends of the connecting rod 5 are respectively arranged in the corresponding arc holes 8 and can move along the arc holes 8, the two ends of the connecting rod 5 are respectively provided with a fastening piece 9, and the fastening pieces 9 are used for fixing the end parts of the connecting rod 5 on the supporting plate 6. The fastening piece 9 is preferably a lock nut, the end surfaces of the two ends of the connecting rod 5 are provided with screw holes along the connecting axial direction, the two ends of the connecting rod 5 are arranged in the arc-shaped holes 8 on the supporting plate 6, the lock nut is arranged in the screw holes of the end parts of the connecting rod 5, and the connecting rod 5 can be loosened by screwing the lock nut so that the connecting rod 5 can move along the arc-shaped holes 8, or the end parts of the connecting rod 5 are fixed with the supporting plate 6.

In this embodiment, the depth measuring mechanism is a depth gauge 10, the depth gauge 10 is disposed on the connecting rod 5, and a measuring end of the depth gauge 10 is connected with the mobile platform 2. The depth gauge 10 may be a mechanical depth gauge 10 or a digital display depth gauge 10 according to the prior art, in this embodiment, the digital display depth gauge 10 is preferred, and the main gauge of the depth gauge 10 is parallel to the guide rail 4, when the contact assembly contacts the first detection point during measurement, the depth of the depth gauge 10 at the first detection point can be cleared, when the second detection point is measured, the depth of the first detection point is taken as the starting point, the depth value displayed by the depth gauge 10 is the depth difference between the two detection points, and the depth value is directly read from the depth gauge 10 without calculation.

The technical scheme is optimized in the embodiment, the base 12 of the height measuring mechanism is mounted on the mobile platform 2 through the locking block 13, the contact assembly is arranged on a ruler frame of the height measuring mechanism, and the ruler frame can move up and down to drive the contact assembly to contact a position to be measured. Specifically, locking blocks 13 are respectively arranged on two sides of the guide rail 4 on the mobile platform 2, so that the stand of the height measuring structure is stably fixed on the mobile platform 2. The locking block 13 is in a transverse U shape, the bottom of the locking block 13 is fixed on the moving platform 2 through a nut or a screw, the base 12 of the height measuring mechanism is clamped in the locking block 13, and the top of the locking block 13 is fixedly locked with the base 12 through a bolt or a screw. The height measuring mechanism is preferably a height ruler 11, the height ruler 11 can be a mechanical height ruler, the height measuring mechanism is preferably a digital display height ruler in the embodiment, a base 12 of the height ruler 11 is fixed on the movable platform 2 through a locking block 13, the contact assembly is fixed on a ruler frame, the ruler frame can move up and down on a vertical sliding rail of the height ruler, thereby driving the contact assembly to move up and down to contact a position to be measured of a measured part, and the measured height can be directly displayed on a display.

The embodiment describes a contact assembly, the contact assembly includes a measuring rod 14 and a measuring needle 15, one end of the measuring rod 14 is mounted on the height measuring mechanism and can move up and down, and the measuring needle 15 is vertically fixed at the other end of the measuring rod 14 and is used for contacting a position to be measured. The measuring needle 15 is adopted to contact the position to be measured, the sensitivity of the contact of the measuring needle 15 and the part to be measured is high, the detection precision can be improved, the measuring rod 14 moves up and down to drive the measuring needle 15 to move up and down, the height measuring mechanism can record the up and down moving position of the measuring rod 14, and therefore the height value of the position to be measured can be obtained.

In this embodiment, as shown in fig. 8 and 9, the measuring rod 14 is in a shape of a "straight" line; or the measuring rod 14 is "L" shaped. The measuring rod 14 is in a straight shape, the measuring rod 14 and the guide rail 4 are in a parallel state, and a screw hole in a horizontal state is convenient to measure. The measuring rod 14 is L-shaped, and the measuring rod 14 comprises two sections which are perpendicular to each other, wherein one section is parallel to the guide rail 4, and the other section is convenient to extend into a measured screw hole in a vertical state, so that the screw hole in the vertical state is convenient to measure. More preferably, the measuring needle 15 and the measuring rod 14 are detachably fixed, so that the measuring rod 14 with different types can be selected for adapting according to the size and the placement posture of the measured part or directly according to the state of the measured screw hole, and the universality of the measuring device is improved.

In this embodiment, the angle measuring mechanism is an angle ruler 16, a horizontal edge of a right angle ruler of the angle ruler 16 is fixed on the moving platform 2, and a base ruler of the angle ruler 16 is fixed on the supporting plate 6. The angle gauge 16 is preferably a prior art, the angle gauge 16 may be a mechanical angle gauge 16, and the embodiment is preferably a digital display angle gauge 16, and the measured angle value is directly displayed.

The embodiment further provides a preferred embodiment, and further includes an indicator lamp 17, a conductive block 18, and a power supply box 19, where the indicator lamp 17, the conductive block 18, the power supply box 19, and the probe 15 are connected in series, the conductive block 18 is used to contact a part to be tested, the part to be tested can conduct electricity, and when the probe 15 contacts the part to be tested, a circuit of the indicator lamp 17 can be turned on.

Specifically, as shown in fig. 10, the indicator light may be a light emitting diode LED, the indicator light 17 is electrically connected with the positive electrode or the negative electrode of the power supply box 19, the conductive block 18 is electrically connected with the indicator light 17, and the probe 15 is electrically connected with the other electrode of the power supply box 19.

During measurement, the conductive block 18 is contacted with the to-be-measured piece, the measuring needle 15 can conduct electricity, and when the measuring needle 15 is contacted with the to-be-measured piece, the conductive block 18, the to-be-measured piece and the measuring needle 15 form a circuit path, so that the indicator lamp 17 can be lightened, the measuring needle 15 can be prevented from being in transitional contact with the to-be-measured piece, the measurement precision is improved, and the damage of the measuring needle 15 can be prevented. Preferably, the measuring rod 14 is a conductor, one end of the measuring rod 14 far away from the measuring needle 15 is electrically connected with the other pole of the power box 19 through a wire 20, an insulating piece is arranged between the measuring rod 14 and the height measuring mechanism, and the insulating piece is used for preventing electric conduction between the measuring rod 14 and the height measuring mechanism. Of course, the end of the measuring needle 15 can be directly connected with the wire 20, the middle of the measuring rod 14 is hollow, and the wire 20 is electrically connected with the other pole of the power box 19 through the middle of the measuring rod 14.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thread measurement device, characterized in that: comprises a base and a bracket component arranged on the base;

2. The thread measurement device of claim 1, wherein the bracket assembly comprises a rail, a connecting rod, and a support plate disposed on the base;

3. The thread measuring device according to claim 2, wherein the guide rail is provided with an adjusting nut, the adjusting nut is located on one side of the moving platform close to the connecting rod, and an end portion of the adjusting nut is connected with the moving platform and used for adjusting a moving distance of the moving platform.

4. The thread measuring device according to claim 2, wherein the support plate is provided with arc holes, both ends of the connecting rod are respectively installed in the corresponding arc holes and can move along the arc holes, both ends of the connecting rod are respectively provided with a fastener, and the fasteners are used for fixing the end parts of the connecting rod on the support plate.

5. The thread measuring device according to claim 2, wherein the depth measuring mechanism is a depth gauge, the depth gauge is disposed on the connecting rod, and a measuring end of the depth gauge is connected with the moving platform.

6. The thread measuring device according to claim 1, wherein the base of the height measuring mechanism is mounted on the moving platform through a locking block, the contact assembly is arranged on a frame of the height measuring mechanism, and the frame can move up and down to drive the contact assembly to contact a position to be measured.

7. The thread measuring device according to claim 1, wherein the stylus assembly comprises a measuring rod and a measuring needle, one end of the measuring rod is mounted on the height measuring mechanism and can move up and down, and the measuring needle is vertically fixed at the other end of the measuring rod and is used for contacting a position to be measured.

8. The thread measuring device of claim 7, wherein the measuring rod is "in-line";

Or the measuring rod is L-shaped.

9. The thread measuring device according to claim 2, wherein the angle measuring mechanism is an angle ruler, a horizontal edge of a right angle ruler of the angle ruler is fixed on the moving platform, and a base ruler of the angle ruler is fixed on the supporting plate.

10. The thread measurement device according to any one of claims 1 to 9, further comprising an indicator light, a conductive block and a power box, wherein the indicator light, the conductive block, the power box and the probe are connected in series, the conductive block is used for contacting a piece to be measured, the piece to be measured is conductive, and when the probe contacts the piece to be measured, a circuit of the indicator light is completed.