A thread measuring method

Abstract

The present invention discloses a thread measurement method, which relates to the technical field of thread measurement. In order to solve the problem of low measurement efficiency, the method specifically comprises the following steps: preparing a threaded part to be detected, and selecting a measuring ruler with a size that matches the size of the threaded part to be detected according to the size specifications of the threaded part to be detected; cleaning the outer surface of the threaded part to be detected; adjusting the threaded hole of the threaded part to be detected and the measuring ruler to be on the same horizontal plane; using the measuring ruler to detect the internal and external threads of the threaded part to be detected, thereby obtaining and recording the thread parameters of the threaded part; the threaded part to be detected includes an external threaded part and an internal threaded part; the measuring ruler includes a conical hollow plate, and diameter measuring components are provided at both ends of the conical hollow plate. The method of the present invention is simple in operation, convenient for detecting the internal and external threads of a workpiece, reduces the tediousness of replacing measuring instruments, improves measurement efficiency, and is easy to promote.

Description

Technical Field

[0001] The present invention relates to the technical field of thread measurement, and in particular to a thread measurement method. Background Art

[0002] Metric threads include common, trapezoidal, serrated, and square threads. Common threads are triangular, continuous raised sections with a specific cross-section, helically formed on the surface of a workpiece such as a cylinder. They are widely used for connecting and securing components due to their excellent self-locking properties, high shear strength, clearance at the minor diameter of the thread pair, and the ability to have a large fillet at the root of the external thread to reduce stress concentration. Currently, in actual thread production, due to the varying thread sizes, multiple thread specifications may be inspected on the same product, with varying depths and not necessarily all threads lying on the same plane. Therefore, measuring numerous thread parameters, such as pitch (P), major diameter (D), pitch diameter (E), and minor diameter (B), is an essential step in thread manufacturing.

[0003] After searching, the Chinese patent application number CN201910722963.5 discloses a thread detection device and a thread measurement method. The thread detection device includes: a thread detection device, which moves along the Y direction of the measuring frame, and includes: a detection device and a driving device; the detection device includes: a turntable, a plurality of guide rods, each guide rod is passed through the turntable and moves and rotates relative to the turntable, each guide rod is connected to a go / no-go gauge, and the guide rod has a first limit portion and a second limit portion, a first elastic element, which is sleeved on the guide rod and respectively abuts against the first limit portion and the turntable; the first driving member is connected to the turntable. The thread detection device and thread measurement method in the above patent have the following shortcomings: the go / no-go gauge can only be used to detect specific thread sizes of the workpiece. If other thread sizes are to be detected, a matching go / no-go gauge needs to be replaced on the measuring body, which is inconvenient to disassemble and assemble, resulting in low measurement efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a thread measuring method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A thread measuring method comprises the following steps:

[0007] S1: Prepare the threaded parts to be tested and select a measuring tool that matches the size of the threaded parts to be tested;

[0008] S2: Clean the outer surface of the threaded part to be inspected;

[0009] S3: Adjust the threaded hole of the threaded part to be tested and the measuring ruler to be on the same horizontal plane;

[0010] S4: Use a measuring ruler to inspect the internal and external threads of the threaded parts to be inspected, thereby obtaining and recording the thread parameters of the threaded parts;

[0011] The threaded parts to be inspected include external threaded parts and internal threaded parts;

[0012] The measuring ruler comprises a conical hollow plate, both ends of which are provided with diameter measuring components; a side surface of the conical hollow plate is provided with a depth pushing component and a length measuring component.

[0013] Preferably: the diameter measuring assembly includes a sleeve plate fixedly connected to the top of the conical hollow plate, an extension plate inserted into the inner wall of the sleeve plate, and an L-shaped bottom plate fixedly connected to the bottom end of the conical hollow plate;

[0014] A scale B is fixed on the same side of the conical hollow plate, sleeve plate and extension plate;

[0015] Anti-slip strips are bonded to both side surfaces of the extension plate; and a through opening is provided at one end of the sleeve plate.

[0016] Preferably, the outer bottom walls of the conical hollow plate and the sleeve plate are provided with a same U-shaped groove, the inner wall of the U-shaped groove is slidably connected with a moving block, and a U-shaped plate is provided on one side of the moving block.

[0017] Preferably, the deep pushing component includes a group of guide pillars fixedly connected to one side of the conical hollow plate, a push plate sleeved on the circumferential outer wall of the group of guide pillars, and a spring 1 fixedly connected to the push plate and the corresponding side of the conical hollow plate, and the guide pillar is within the wrapping range of the spring 1;

[0018] The top end of the push plate is fixedly connected with a pointer which forms a sliding fit with the through slot.

[0019] Preferably, a through groove is provided on one side of the conical hollow plate above the push plate, and a scale A is fixed on one side of the conical hollow plate on both sides of the through groove.

[0020] Preferably, the length measuring component includes two upper and lower limiting grooves sequentially arranged on one side surface of the conical hollow plate, a directional rod fixedly connected to the inner wall of the limiting groove, a lower inclined surface block and an upper inclined surface block respectively inserted into the inner walls of the two limiting grooves, a long groove arranged on the top surface of the lower inclined surface block and the upper inclined surface block, and a top support group arranged on the inner walls of the two limiting grooves;

[0021] The lower inclined surface block and the upper inclined surface block are respectively sleeved on the outer wall of the directional rod through long grooves.

[0022] Preferably: the supporting group includes a second spring sleeved on the outer wall of the directional rod, a guide groove arranged on the side corresponding to the limit groove, a movable plate slidably connected to the inner walls of the two guide grooves, and the inner wall of the movable plate is sleeved on the outer wall of the directional rod, and the two ends of the second spring are respectively fixedly connected to the movable plate and the corresponding side of the limit groove.

[0023] Preferably, the top end of the lower inclined surface block is fixedly connected to a transparent ruler rod inserted into the inner wall of the upper inclined surface block.

[0024] Preferably, the thread parameters of the external threaded part include the outer diameter of the external threaded part, the thread pitch, the distance from the thread crest to the thread root, and the thread length of the external threaded part;

[0025] The thread parameters of the internal threaded part include the outer diameter of the internal threaded part, the inner diameter of the internal threaded part, the thread pitch, the distance from the thread crest to the thread bottom, and the thread depth of the internal threaded part.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention only requires selecting a measuring ruler with a size that matches the size of the threaded part to be tested, and then performing testing to obtain the thread parameters of the threaded part. The operation method is simple, convenient for testing the internal and external threads of the workpiece, reduces the tediousness of replacing measuring instruments, improves measurement efficiency, and is easy to promote.

[0028] 2. The present invention, by setting structures such as a diameter measuring component, can obtain the thread area depth and inner diameter parameters of an internally threaded part, the thread area length of an externally threaded part, and the outer diameter parameters of an externally threaded part or an internally threaded part, and is easy to use.

[0029] 3. In the present invention, after adjusting the measuring ruler and the threaded part to be inspected to the same horizontal line, the measuring ruler is pushed toward the threaded part to be inspected until the outer side surface of the conical hollow plate is in contact with the top of the external threaded part or the bottom of the internal threaded part. At this time, the tips of the lower bevel block and the upper bevel block will also abut against the top of the external threaded part or the bottom of the internal threaded part under the support of the push plate. Therefore, the distance from the thread top to the thread bottom of the threaded part to be inspected is the distance between the conical hollow plate and the lower bevel block and / or the upper bevel block. This distance parameter can be obtained according to the index of the pointer to the scale A to obtain the distance between one side of the conical hollow plate and one side of the push plate. Then, the overall length value of the lower bevel block or the upper bevel block is subtracted from this distance and the outer wall thickness of the conical hollow plate to obtain the distance value from the thread top to the thread bottom in the external threaded part or the internal threaded part.

[0030] 4. In the present invention, the lower bevel block and the upper bevel block are supported by two pairs of spring movable plates, and move toward the middle along the directional rod respectively, so that the lower bevel block and the upper bevel block are respectively inserted into the root of the tooth of any two adjacent external threaded parts or the top of the tooth of the internal threaded part. As the upper and lower spacing between the lower bevel block and the upper bevel block changes, the length of the transparent ruler protruding from the top of the conical hollow plate also changes accordingly. When the lower bevel block and the upper bevel block abut against the root of the tooth of the external threaded part or the top of the tooth of the internal threaded part, people observe the parameter pointed by the pointer close to the transparent ruler rod from the top of the measuring tool, thereby obtaining the thread pitch of the detected threaded part, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the overall structure of a measuring ruler for a thread measurement method proposed in the present invention;

[0032] Figure 2 A schematic diagram of a top view of a conical hollow plate of a measuring ruler for a thread measurement method proposed in the present invention;

[0033] Figure 3 A schematic diagram of the bottom-up structure of a measuring ruler for a thread measuring method proposed by the present invention;

[0034] Figure 4 A schematic diagram of a thread measuring method proposed by the present invention, wherein a measuring ruler is used to measure an external threaded part;

[0035] Figure 5 This is a schematic diagram of a thread measurement method proposed in the present invention, wherein a measuring ruler is used to measure an internal threaded part.

[0036] In the figure: 001 external threaded part, 002 internal threaded part, 1 conical hollow plate, 2 bottom plate, 3 lower inclined block, 4 upper inclined block, 5 through slot, 6 reference ruler A, 7 transparent ruler rod, 8 set plate, 9 extension plate, 901 anti-slip strip, 10 through port, 11 reference ruler B, 12 spring 1, 13 guide column, 14 push plate, 1401 pointer, 15 spring 2, 16 directional rod, 17 limit slot, 18 moving block, 1801 U-shaped plate, 1802 U-shaped slot, 19 movable plate. DETAILED DESCRIPTION

[0037] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0038] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] Example 1:

[0040] A method of measuring threads, such as Figure 1-5 As shown, the following steps are included:

[0041] S1: Prepare the threaded parts to be tested and select a measuring tool that matches the size of the threaded parts to be tested;

[0042] S2: Clean the outer surface of the threaded part to be tested to ensure that there are no solid impurities or protrusions to reduce measurement errors.

[0043] S3: Adjust the threaded hole of the threaded part to be tested and the measuring ruler to be on the same horizontal plane to avoid inaccurate measurement data due to tilting of the two.

[0044] S4: Use a measuring ruler to inspect the internal and external threads of the threaded parts to obtain and record the thread parameters of the threaded parts.

[0045] Furthermore, the threaded parts to be inspected include an external threaded part 001 and an internal threaded part 002;

[0046] Preferably, the external threaded part 001 and the internal threaded part 002 can be finished products made of any material in the prior art;

[0047] Preferably, the threads of the external threaded part 001 and the internal threaded part 002 are both common threads.

[0048] Furthermore, the thread parameters of the external threaded part 001 include the outer diameter of the external threaded part 001, the thread pitch, the distance from the thread crest to the thread root, the thread length of the external threaded part 001, etc.

[0049] Furthermore, the thread parameters of the internal threaded part 002 include the outer diameter of the internal threaded part 002, the inner diameter of the internal threaded part 002, the thread pitch, the distance from the thread top to the thread bottom, the thread depth of the internal threaded part 002, etc.

[0050] When in use, this embodiment has a simple operation method, is convenient for detecting the internal and external threads of a workpiece, reduces the complexity of replacing measuring instruments, improves measurement efficiency, and is easy to promote.

[0051] Example 2:

[0052] A method of measuring threads, such as Figure 1-5As shown, in order to quickly obtain the length dimension of the threaded area of ​​the threaded part; the measuring ruler includes a conical hollow plate 1, and a conical hollow plate 1 with a small conical surface at one end is used to make the surface fit the thread line detection position to ensure the accuracy of the value; the two ends of the conical hollow plate 1 are provided with a diameter measuring assembly for measuring the inner and outer diameters of the part, and the diameter measuring assembly includes a sleeve plate 8 fixed to the top of the conical hollow plate 1 by bolts, an extension plate 9 inserted into the inner wall of the sleeve plate 8, and an 'L'-shaped bottom plate 2 fixed to the bottom end of the conical hollow plate 1 by bolts;

[0053] Preferably, the length of the bottom plate 2 is set to a fixed size;

[0054] Preferably, a scale B11 that can be connected front and back is fixed on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9; when it is necessary to obtain the depth of the threaded area of ​​the threaded part to be detected, first place the measuring ruler in the internal threaded part 002 to be detected so that the bottom plate 2 contacts the inner wall of the bottom of the internal thread, and then pull out the extension plate 9 from the sleeve plate 8 according to the thread depth of the internal threaded part 002. People can obtain the depth of the threaded area of ​​the internal threaded part 002 by observing the scale B11 on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9; or the measuring ruler and the external threaded part 001 to be detected are placed on the external structural plane, and the bottom surface of the bottom plate 2 is adjusted to be on the same horizontal line as the bottom end of the external threaded area of ​​the external threaded part 001. Then, the extension plate 9 is pulled out from the sleeve plate 8. People can obtain the length of the threaded area of ​​the external threaded part 001 by observing the scale B11 on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9, which is easy to use.

[0055] Further preferably, anti-slip strips 901 are bonded to both side surfaces of the extension plate 9 , so as to facilitate rapid extraction of the extension plate 9 from the sleeve plate 8 .

[0056] Still more preferably, one end of the sleeve plate 8 is provided with a through opening 10 for easy manual extraction.

[0057] Furthermore, in order to obtain the inner and outer diameters of the threaded parts; the bottom outer walls of the conical hollow plate 1 and the sleeve plate 8 are provided with the same U-shaped groove 1802, the inner wall of the U-shaped groove 1802 is slidably connected with a moving block 18, and one side of the moving block 18 is hinged with a U-shaped plate 1801; when it is necessary to obtain the inner diameter of the thread of the internally threaded part 002 to be detected, the internally threaded part 002 to be detected is placed flat, the extension plate 9 is pulled out from the sleeve plate 8, and then the same side of the conical hollow plate 1 and the sleeve plate 8 is placed flat on the threaded port of the internally threaded part 002, and then the inner diameter parameter of the internally threaded part 002 can be obtained by observing the value of the scale B11 on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9;

[0058] When it is necessary to obtain the thread outer diameter of the external threaded part 001 to be tested and the internal threaded part 002 to be tested, first call out the U-shaped plate 1801 from the U-shaped groove 1802, turn it 90 degrees and fit it with one side of the moving block 18, so that it is kept horizontally relative to the through-hole 10, and then hold the measuring ruler horizontally so that the same side of the conical hollow plate 1 and the sleeve plate 8 fits the outer surface of the external threaded part 001 or the internal threaded part 002, and the measuring ruler is kept at a certain position of the external threaded part 001 or the internal threaded part 002. Keep it level, then manually push the U-shaped plate 1801 inward so that it moves toward the external threaded part 001 or the internal threaded part 002 along the U-shaped groove 1802 through the moving block 18 until the corresponding side of the sleeve plate 8 and the U-shaped plate 1801 fits the outer surface of the external threaded part 001 or the internal threaded part 002. At this time, by observing the scale B11 value on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9, the outer diameter parameters of the external threaded part 001 or the internal threaded part 002 can be obtained.

[0059] like Figure 1-5 As shown, in order to quickly obtain the thread pitch of the threaded part, etc.; one side of the conical hollow plate 1 is provided with a depth pushing component and a length measuring component, the depth pushing component includes a group of guide pillars 13 welded on one side of the conical hollow plate 1, a push plate 14 sleeved on the circumferential outer wall of a group of guide pillars 13, and a spring 12 welded on the push plate 14 and the corresponding side of the conical hollow plate 1, and the guide pillar 13 is in the wrapping range of the spring 12; the push plate 14 moves forward along the guide pillar 13 under the elastic push of the spring 12, thereby squeezing the length measuring component back and forth.

[0060] Furthermore, a through groove 5 is provided on one side of the conical hollow plate 1 above the push plate 14, and a scale A6 is fixed on one side of the conical hollow plate 1 on both sides of the through groove 5. Preferably, the length of the scale A6 is adapted to the through groove 5.

[0061] Furthermore, a pointer 1401 is fixed to the top of the push plate 14 by bolts, and the pointer 1401 is in sliding engagement with the through slot 5. Preferably, infrared lamps are fixed to both ends of the pointer 1401. When the push plate 14 moves, the pointer 1401 is driven to move synchronously. By observing the index of the pointer 1401 relative to the scale A6 from directly above, the distance between one side of the conical hollow plate 1 and one side of the push plate 14 can be obtained. By subtracting this distance and the outer wall thickness of the conical hollow plate 1 from the overall length value of the lower bevel block 3 or the upper bevel block 4, the distance from the top of the thread to the bottom of the thread in the external threaded part 001 or the internal threaded part 002 can be obtained.

[0062] The length measuring component includes two upper and lower limit grooves 17 sequentially opened on one side of the conical hollow plate 1, a directional rod 16 welded to the inner wall of the limit groove 17, a lower inclined surface block 3 and an upper inclined surface block 4 respectively inserted into the inner walls of the two limit grooves 17, a long groove opened on the top surface of the lower inclined surface block 3 and the upper inclined surface block 4, and a top support group provided on the inner walls of the two limit grooves 17;

[0063] Preferably, the lower bevel block 3 and the upper bevel block 4 are respectively sleeved on the outer wall of the directional rod 16 through the long groove; the push plate 14 is always in contact with one side of the lower bevel block 3 and the upper bevel block 4 under the support of the spring 12, and then pushes the lower bevel block 3 and the upper bevel block 4 to move forward and backward through the long groove along the directional rod 16 and the limit groove 17; when in use, first adjust the measuring ruler to the same horizontal line as the threaded part to be inspected, and then push the measuring ruler toward the direction of the threaded part to be inspected until the outer side surface of the conical hollow plate 1 is in contact with the top of the external threaded part 001 or the bottom of the internal threaded part 002. At this time, the tips of the lower bevel block 3 and the upper bevel block 4 will also be in contact with the push plate 14. The top support of plate 14 abuts against the bottom of the external threaded part 001 or the top of the internal threaded part 002, so the distance from the top of the thread to the bottom of the thread of the detected threaded part is the distance between the conical hollow plate 1 and the lower bevel block 3 and / or the upper bevel block 4. This distance parameter can be obtained according to the index of pointer 1401 to the scale A6 to obtain the distance between one side of the conical hollow plate 1 and one side of the push plate 14, and then the overall length value of the lower bevel block 3 or the upper bevel block 4 is subtracted from this distance and the outer wall thickness of the conical hollow plate 1 to obtain the distance value from the top of the thread to the bottom of the thread in the external threaded part 001 or the internal threaded part 002.

[0064] Furthermore, the supporting group includes a spring 15 sleeved on the outer wall of the directional rod 16, a guide groove provided on a side corresponding to the limiting groove 17, and a movable plate 19 slidably connected to the inner walls of the two guide grooves, and the inner wall of the movable plate 19 is sleeved on the outer wall of the directional rod 16, and the two ends of the spring 15 are respectively welded to the movable plate 19 and the corresponding side of the limiting groove 17;

[0065] Preferably, a transparent ruler rod 7 is welded to the top of the lower bevel block 3 and inserted into the inner wall of the upper bevel block 4; the lower bevel block 3 and the upper bevel block 4 are supported by the spring 2 15 on the movable plate 19, and move toward the middle along the directional rod 16 respectively, so that the lower bevel block 3 and the upper bevel block 4 are respectively inserted into the tooth bottom of any two adjacent external threaded parts 001 or the tooth top of the internal threaded part 002. As the upper and lower spacing between the lower bevel block 3 and the upper bevel block 4 changes, the length of the transparent ruler rod 7 protruding from the top of the conical hollow plate 1 also changes accordingly. When the lower bevel block 3 and the upper bevel block 4 abut against the tooth bottom of the external threaded part 001 or the tooth top of the internal threaded part 002, people observe the pointer 1401 close to the transparent ruler rod 7 from above the measuring tool to point to the parameter, thereby obtaining the thread pitch of the detected threaded part, which is easy to operate.

[0066] Preferably, the two supporting groups are respectively located below the lower inclined surface block 3 and above the upper inclined surface block 4 so as to apply pressure to the lower inclined surface block 3 and the upper inclined surface block 4 to move toward the middle.

[0067] In this embodiment, when it is necessary to obtain the depth of the threaded area of ​​the threaded part to be inspected, the measuring ruler is first placed in the internal threaded part 002 to be inspected, so that the bottom plate 2 contacts the inner wall of the bottom of the internal thread, and then the extension plate 9 is pulled out from the sleeve plate 8 according to the thread depth of the internal threaded part 002. People can obtain the depth of the threaded area of ​​the internal threaded part 002 by observing the scale B11 on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9; or the measuring ruler and the external threaded part 001 to be inspected are placed on the external structural plane, and the bottom surface of the bottom plate 2 is adjusted to be on the same horizontal line as the bottom end of the external threaded area of ​​the external threaded part 001. Then the extension plate 9 is pulled out from the sleeve plate 8. People can obtain the length of the threaded area of ​​the external threaded part 001 by observing the scale B11 on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9.

[0068] When it is necessary to obtain the inner diameter of the thread of the internal threaded part 002 to be tested, the internal threaded part 002 to be tested is placed flat, and the extension plate 9 is pulled out from the sleeve 8. Then, the conical hollow plate 1 and the same side of the sleeve 8 are placed flat on the threaded port of the internal threaded part 002. Then, by observing the value of the scale B11 on the same side of the conical hollow plate 1, the sleeve 8 and the extension plate 9, the inner diameter parameter of the internal threaded part 002 can be obtained. When it is necessary to obtain the outer diameter of the thread of the external threaded part 001 to be tested and the internal threaded part 002 to be tested, first call out the U-shaped plate 1801 from the U-shaped groove 1802, flip it 90 degrees and fit it to one side of the moving block 18 so that it is kept horizontally relative to the through port 10. Then, hold the measuring ruler horizontally so that the same side of the conical hollow plate 1 and the sleeve 8 fits the outer surface of the external threaded part 001 or the internal threaded part 002, and the measuring ruler is kept in contact with a certain position of the external threaded part 001 or the internal threaded part 002. Keep it level, then manually push the U-shaped plate 1801 inward so that it moves toward the external threaded part 001 or the internal threaded part 002 along the U-shaped groove 1802 through the moving block 18 until the corresponding side of the sleeve plate 8 and the U-shaped plate 1801 fits the outer surface of the external threaded part 001 or the internal threaded part 002. At this time, by observing the scale B11 value on the same side of the conical hollow plate 1, the sleeve plate 8 and the extension plate 9, the outer diameter parameters of the external threaded part 001 or the internal threaded part 002 can be obtained.

[0069] After adjusting the measuring ruler to be on the same horizontal line as the threaded part to be inspected, push the measuring ruler toward the threaded part to be inspected until the outer side surface of the conical hollow plate 1 is in contact with the top of the external threaded part 001 or the bottom of the internal threaded part 002. At this time, the tips of the lower bevel block 3 and the upper bevel block 4 will also abut against the top of the external threaded part 001 or the bottom of the internal threaded part 002 under the support of the push plate 14. Therefore, the distance from the thread top to the thread bottom of the threaded part to be inspected is the distance between the conical hollow plate 1 and the lower bevel block 3 and / or the upper bevel block 4. This distance parameter can be obtained according to the index of the pointer 1401 to the scale A6 to obtain the distance between one side of the conical hollow plate 1 and one side of the push plate 14. Then, the overall length value of the lower bevel block 3 or the upper bevel block 4 is subtracted from this distance and the outer wall thickness of the conical hollow plate 1 to obtain the distance value from the thread top to the thread bottom in the external threaded part 001 or the internal threaded part 002. During the inspection, the lower bevel block 3 and the upper bevel block 4 are supported by the spring 2 15 on the movable plate 19, and move toward the middle along the directional rod 16, so that the lower bevel block 3 and the upper bevel block 4 are respectively inserted into the bottom of the teeth of any two adjacent external threaded parts 001 or the top of the teeth of the internal threaded part 002. As the upper and lower spacing between the lower bevel block 3 and the upper bevel block 4 changes, the length of the transparent ruler rod 7 protruding from the top of the conical hollow plate 1 also changes accordingly. When the lower bevel block 3 and the upper bevel block 4 abut against the bottom of the teeth of the external threaded part 001 or the top of the teeth of the internal threaded part 002, people observe the parameters pointed to by the pointer 1401 close to the transparent ruler rod 7 from above the measuring tool, thereby obtaining the thread pitch of the threaded part being inspected.

[0070] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A thread measuring method, characterized in that: The steps include: S1: Prepare the threaded parts to be tested and select a measuring tool that matches the size of the threaded parts to be tested; S2: Clean the outer surface of the threaded part to be inspected; S3: Adjust the threaded hole of the threaded part to be tested and the measuring ruler to be on the same horizontal plane; S4: Use a measuring ruler to inspect the internal and external threads of the threaded parts to be inspected, thereby obtaining and recording the thread parameters of the threaded parts; The threaded parts to be inspected include an external threaded part (001) and an internal threaded part (002); The measuring ruler comprises a conical hollow plate (1), with diameter measuring components provided at both ends of the conical hollow plate (1); a depth pushing component and a length measuring component are provided on one side of the conical hollow plate (1); The diameter measuring assembly comprises a sleeve plate (8) fixedly connected to the top end of the conical hollow plate (1), an extension plate (9) inserted into the inner wall of the sleeve plate (8), and an L-shaped bottom plate (2) fixedly connected to the bottom end of the conical hollow plate (1); A scale B (11) is fixed to the same side of the conical hollow plate (1), the sleeve plate (8) and the extension plate (9); Both sides of the extension plate (9) are bonded with anti-slip strips (901); one end of the sleeve plate (8) is provided with a through opening (10); The deep pushing component comprises a group of guide posts (13) fixedly connected to one side of the conical hollow plate (1), a push plate (14) sleeved on the circumferential outer wall of the group of guide posts (13), and a spring (12) fixedly connected to the push plate (14) and the corresponding side of the conical hollow plate (1), and the guide post (13) is within the wrapping range of the spring (12); A through groove (5) is provided on one side of the conical hollow plate (1) above the push plate (14), and a scale A (6) is fixed on one side of the conical hollow plate (1) on both sides of the through groove (5); The top end of the push plate (14) is fixedly connected to a pointer (1401) that forms a sliding fit with the through slot (5); The length measuring component comprises two upper and lower limiting grooves (17) sequentially arranged on one side of the conical hollow plate (1), a directional rod (16) fixedly connected to the inner wall of the limiting groove (17), a lower inclined surface block (3) and an upper inclined surface block (4) respectively inserted into the inner walls of the two limiting grooves (17), a long groove arranged on the top surface of the lower inclined surface block (3) and the upper inclined surface block (4), and a top support group arranged on the inner walls of the two limiting grooves (17); The lower inclined surface block (3) and the upper inclined surface block (4) are respectively sleeved on the outer wall of the directional rod (16) through long grooves; The thread parameters of the external threaded part (001) include the outer diameter of the external threaded part (001), the thread pitch, the distance from the thread crest to the thread root, and the thread length of the external threaded part (001); The thread parameters of the internal threaded part (002) include the outer diameter of the internal threaded part (002), the inner diameter of the internal threaded part (002), the thread pitch, the distance from the thread crest to the thread bottom, and the thread depth of the internal threaded part (002).

2. A thread measuring method according to claim 1, characterized in that: The outer bottom walls of the conical hollow plate (1) and the sleeve plate (8) are provided with a common U-shaped groove (1802), the inner wall of the U-shaped groove (1802) is slidably connected to a moving block (18), and a U-shaped plate (1801) is provided on one side of the moving block (18).

3. A thread measuring method according to claim 1, characterized in that: The supporting group includes a second spring (15) sleeved on the outer wall of the directional rod (16), a guide groove arranged on a side surface corresponding to the limiting groove (17), and a movable plate (19) slidably connected to the inner walls of the two guide grooves, and the inner wall of the movable plate (19) is sleeved on the outer wall of the directional rod (16), and the two ends of the second spring (15) are respectively fixedly connected to the movable plate (19) and the corresponding side surface of the limiting groove (17).

4. A thread measuring method according to claim 3, characterized in that: The top end of the lower bevel block (3) is fixedly connected to a transparent ruler rod (7) inserted into the inner wall of the upper bevel block (4).

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