Portable steel bar straight threading machine and threading method thereof

Abstract

This invention discloses a portable rebar straight threading machine and its threading method, belonging to the technical field of construction machinery. It includes: a rebar positioning mechanism located at one end of the machine body; the rebar positioning mechanism has an adjustable positioning space and a predetermined length of floating space in the X-axis; a rotating threading cutter arranged opposite to the rebar positioning mechanism in the X-axis; the rotating threading cutter has rotational freedom and has a connector locator inside; the connector locator controls the reciprocating freedom of the rebar in the X-axis. This invention uses a portable straight threading machine to reprocess defective straight thread joints at any construction site, ensuring that all quality is qualified. Furthermore, the rebar positioning mechanism of this invention is an open-type positioning mechanism, suitable for positioning rebars of a certain length. The rebar can be placed directly from the open end, eliminating the need for manual or mechanical long-distance dragging, insertion, and positioning. Simultaneously, the rebar positioning mechanism of this application provides a floating space in the X-axis to generate the pitch required for straight threading.

Description

Technical Field

[0001] This invention belongs to the technical field of construction machinery, and in particular relates to a portable rebar straight thread cutting machine and its thread cutting method. Background Technology

[0002] The construction industry has numerous regulations regarding rebar connections, with particular emphasis on the quality of rebar joints. While the straight thread connection process is currently quite mature, substandard straight thread joints still exist before leaving the warehouse and being used. This is because the machinery used for processing straight thread joints is medium-sized, and the processing location and machinery are in a fixed position. Once these substandard straight thread joints are used in the main structure, there is no way to correct them to obtain proper straight thread joints, leading to potential safety hazards in the rebar connection. Summary of the Invention

[0003] To address the technical problems existing in the background art described above, the present invention provides a portable rebar straight thread cutting machine and its thread cutting method.

[0004] This invention adopts the following technical solution: a portable rebar straight thread cutting machine, comprising a vehicle body having a degree of freedom of movement; defining the length of the vehicle body as the X-axis and the width as the Y-axis; further comprising:

[0005] A rebar positioning mechanism is located at one end of the vehicle body; the rebar positioning mechanism has an adjustable positioning space and a floating space of a predetermined length in the X-axis;

[0006] A rotary threading cutter is positioned opposite to the rebar positioning mechanism in the X-axis direction; the rotary threading cutter has rotational freedom and is equipped with a connector locator inside; the connector locator controls the reciprocating freedom of the rebar in the X-axis direction.

[0007] The drive mechanism is connected to the rotating threading tool.

[0008] In a further embodiment, the rebar positioning mechanism includes:

[0009] A floating component is mounted on the upper surface of the vehicle body;

[0010] The gripper cylinder is connected to the output end of the floating assembly.

[0011] The first clamping member and the second clamping member are respectively disposed at the two output ends of the gripper cylinder; the working modes between the first clamping member and the second clamping member include at least: solid positioning mode and dynamic positioning mode.

[0012] In a further embodiment, the rotary threading tool includes:

[0013] The tool holder includes: a base, a body connected to the base, and a mounting cavity formed inside the body; the base has a connecting end and is configured to be drive-connected to the drive mechanism, and the mounting cavity is configured to mount the connector locator.

[0014] At least one set of thread cutter assemblies is distributed within the body at predetermined intervals; the thread cutter assembly includes:

[0015] A guide seat is installed inside the main body; the guide seat is provided with an arc-shaped guide groove;

[0016] The tool holder is movably fitted inside the guide seat; a guide post is provided on one side of the tool holder, and the guide post is adapted to the arc-shaped guide groove;

[0017] A rotary cylinder is located below the guide seat; the bottom of the tool holder is rotatably connected to the rotary cylinder's rotating rod.

[0018] The cutting head is fixedly mounted on the top of the cutting handle; the cutting head, driven by a rotary cylinder, adjusts the cutting depth by combining an arc-shaped guide groove and a guide post.

[0019] In a further embodiment, the floating component includes:

[0020] The forward and reverse rotating motors and the support base are arranged adjacent to each other along the X-axis;

[0021] A threaded rod is rotatably mounted within the bearing seat;

[0022] The positioning plate is connected to the threaded rod via a threaded drive; the threaded rod is configured as a fixed gripper cylinder.

[0023] In a further embodiment, the first clamping member includes:

[0024] The first clamping plate is configured to be connected to the gripper cylinder;

[0025] The first positioning plate and the second positioning plate are fixed perpendicularly to the two end faces of the first clamping plate along the Y-axis; the clamping surfaces of the first positioning plate and the second positioning plate are both concave surfaces.

[0026] A drive cylinder is installed perpendicularly along the Y-axis on the outer side of the first clamping plate;

[0027] The inner clamping plate is disposed between the first positioning plate and the second positioning plate and is drively connected to the output end of the drive cylinder.

[0028] In a further embodiment, the second clamping member includes:

[0029] The second clamping plate is configured to connect to the gripper cylinder;

[0030] The mounting block is connected to the second clamping plate; the clamping surface of the mounting block has at least two sets of mounting grooves.

[0031] Several clamping rollers are installed in the mounting slots.

[0032] In a further embodiment, the drive mechanism includes:

[0033] A drive motor is mounted on one side of the rotating threading tool;

[0034] The drive wheel is fixed to the output shaft of the drive motor;

[0035] A rotating roller is mounted on the vehicle body via a bracket; the rotating roller is fixedly connected to the center of the connecting end.

[0036] The driven wheel is mounted on the rotating roller; the driven wheel and the driving wheel are connected by a transmission belt.

[0037] In a further embodiment, the mounting cavity includes an interconnected mounting cavity and an operating cavity; the connector positioner includes:

[0038] A positioning cylinder is detachably installed in the mounting cavity; a through hole is provided at the bottom of the positioning cylinder;

[0039] A lifting cylinder is fixed inside the operating chamber;

[0040] A compression spring, one end of which is connected to the output end of the lifting cylinder;

[0041] A positioning rod, one end of which is connected to the other end of a compression spring; the other end of the positioning rod passes through the through hole and is provided with a positioning protrusion.

[0042] In a further embodiment, it further includes: a guide member fixed at the other end of the positioning rod; the guide member includes: an umbrella-shaped connecting ring and a collar fixed at the end of the connecting ring; the collar is adapted to the through hole.

[0043] The threading method using the portable rebar threading machine described above includes the following steps:

[0044] Threading machine reset: Select a positioning cylinder that matches the outer diameter of the rebar to be processed and install it in the mounting cavity. Ensure the cutting head of the rotating threading tool does not overlap with the positioning cylinder. Control the lifting cylinder to be in the ejected state. Define the coordinates of the current positioning protrusion as follows: Correspondingly, the center coordinates of the positioning plate inside the rebar positioning mechanism are: The first clamping member and the second clamping member are far apart from each other to form a clamping space;

[0045] Loading the steel bar to be processed: Pass the waiting end of the steel bar to be processed through the clamping space to reach the positioning cylinder and contact the positioning protrusion until the compression spring is fully compressed. Then the first clamping member and the second clamping member come together to position it, which is a dynamic positioning mode.

[0046] For cutting straight threads on reinforcing bars: While the drive mechanism controls the rotation of the rotary thread cutter, the rotary cylinder inside the thread cutter assembly rotates the cutter handle at a predetermined speed. The cutter handle rotates under the action of the arc-shaped guide groove and the guide post, which increases the cutting depth of the cutter head until the current thread ring is cut; the cutter head returns to the initial state: the cutter head and the positioning cylinder do not overlap.

[0047] Straight thread pitch generation: The drive cylinder controls the inner clamp plate to push out, further limiting the reinforcing bar to enter the solid positioning mode; based on the thread pitch... Simultaneously, the compression lifting cylinder and the rotation of the forward and reverse motors are adjusted to make the coordinates of the current positioning bump... The center coordinates of the positioning plate are The compression spring remains in a fully compressed state, driving the cylinder to switch to the compression state and enter the dynamic positioning mode;

[0048] This process is repeated to generate straight threads and straight thread pitch on the reinforcing bars.

[0049] The beneficial effects of this invention are as follows: This invention utilizes a portable straight thread threading machine to reprocess already used, substandard straight thread joints at any construction site, ensuring that all quality parts meet standards. Furthermore, the rebar positioning mechanism of this invention is an open-type positioning system, suitable for positioning rebars of a certain length. The rebar can be directly placed from the open end, eliminating the need for additional manual or mechanical (and under conditions that do not allow it: harsh environments, heavy rebars) long-distance dragging, threading, and positioning. Simultaneously, the rebar positioning mechanism of this application provides floating space along the X-axis to generate the pitch required for straight thread threading.

[0050] Furthermore, the rotary thread cutter configured in this invention has a self-rotating cutter head, and the cutter head, in conjunction with other components, can adjust the cutting depth to produce the desired thread. In addition, the rotary thread cutter configured in this invention is adapted to the rebar positioning mechanism and has a connector locator, which not only ensures the stability of the rebar during threading but also adapts to pitch generation and works synchronously with the floating space. Attached Figure Description

[0051] Figure 1 This is a top view of a portable rebar straight thread cutting machine.

[0052] Figure 2 This is a structural diagram of the rebar positioning mechanism.

[0053] Figure 3This is a structural diagram of a rotary thread cutting tool.

[0054] Figure 4 This is a structural diagram of the threading tool assembly.

[0055] Figure 5 This is a structural diagram of the connector locator.

[0056] Figure 6 This is a schematic diagram of the working principle of a portable rebar straight thread cutting machine.

[0057] Figures 1 to 5 The components are labeled as follows: 1. Car body; 2. Rebar positioning mechanism; 3. Rotary thread cutter; 4. Drive mechanism; 5. Rebar; 6. Floating assembly; 7. Clamping cylinder; 8. First clamping plate; 9. First positioning plate; 10. Second positioning plate; 11. Recessed surface; 12. Inner clamping plate; 23. Second clamping plate; 24. Mounting block; 25. Mounting groove; 26. Pressure wheel; 27. Bearing seat; 28. Threaded rod; 29. ​​Positioning plate; 200. Positioning plate; 201. Tool holder; 301. Body; 302. Thread cutter assembly; 303. Positioning cylinder; 304. Lifting cylinder; 305. Compression spring; 306. Positioning rod; 307. Positioning protrusion; 308. Guide component; 309. Guide seat; 303. Arc-shaped guide groove; 303. Tool holder; 303. Tool head; 303. Guide post; 303. E. Connecting ring; 309. Collar; 309. E. Detailed Implementation

[0058] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0059] Example 1

[0060] A portable rebar straight thread cutting machine includes a vehicle body 1, which has a degree of freedom of movement; the length of the vehicle body 1 is defined as the X-axis, and the width is defined as the Y-axis. The vehicle body 1 has a degree of freedom of movement via wheels, and a braking mechanism is provided on the corresponding wheels for stable operation.

[0061] like Figure 1 As shown, it also includes a rebar positioning mechanism 2 disposed at one end of the vehicle body 1. In order to adapt to rebars of different outer diameters, the rebar positioning mechanism 2 in this embodiment has an adjustable positioning space. In a further embodiment, the rebar positioning mechanism 2 also has a floating space of a predetermined length in the X-axis, the floating space being used for pitch generation as described below.

[0062] Correspondingly, the rotary thread cutter 3 is positioned opposite the rebar positioning mechanism 2 in the X-axis. Furthermore, the rotary thread cutter 3 has rotational freedom and an internal connector locator; the connector locator controls the reciprocating freedom of the rebar in the X-axis. To achieve full threading, the rotary thread cutter 3 is connected to a drive mechanism 4; in other words, the drive mechanism 4 is the rotational power source for the rotary thread cutter 3.

[0063] In a further embodiment, the drive mechanism 4 includes: a drive motor mounted on one side of the rotating thread cutter 3, wherein a drive wheel is fixed on the output shaft of the drive motor. It also includes: a rotating roller mounted on the vehicle body 1 via a bracket, the rotating roller being connected to the rotating thread cutter 3. Correspondingly, a driven wheel is also mounted on the rotating roller, and the driven wheel and the drive wheel are connected by a transmission belt.

[0064] That is, the drive motor rotates to drive the drive wheel to rotate, and the drive wheel drives the driven wheel to rotate via a rotating belt. The rotating thread cutter 3, which is connected to the driven wheel, rotates on its own.

[0065] Considering that the steel bars on the construction site have a certain weight and mass, if the steel bar positioning mechanism 2 is not an open structure, it would require manual intervention or a separate mechanism to pass through and position them, and disassembly would be relatively troublesome. Therefore, this embodiment adopts an open steel bar positioning mechanism 2, which means that the steel bars can be placed into the steel bar positioning mechanism 2 and positioned in one step when transporting them.

[0066] like Figure 2 As shown, the rebar positioning mechanism 2 includes: a floating component 201 mounted on the upper surface of the vehicle body 1, and a gripper cylinder 202 connected to the output end of the floating component 201. The gripper cylinder 202 in this embodiment is the existing gripper cylinder 202, which has two output ends and will not be described in detail here.

[0067] The floating assembly 201 includes a forward / reverse motor and a support 201-a arranged adjacent to each other along the X-axis. A threaded rod 201-b is rotatably mounted inside the support 201-a, and a positioning plate 201-c is connected to the threaded rod 201-b via a threaded drive. A gripper cylinder 202 is mounted on the positioning plate 201-c.

[0068] It also includes: a first clamping member and a second clamping member respectively disposed at the two output ends of the gripper cylinder 202. In a further embodiment, the working modes between the first clamping member and the second clamping member include at least: a solid positioning mode and a dynamic positioning mode. The solid positioning mode is used for thread cutting, while the dynamic positioning mode is used for pitch generation. The corresponding positioning mode is selected based on two different processing states to meet the decomposition of friction or other forces during processing.

[0069] The implementation structure of the above two positioning modes is as follows: The first clamping member includes a first clamping plate 203 connected to the output end of the gripper cylinder 202. A first positioning plate 204 and a second positioning plate 205 are vertically fixed to both ends of the first clamping plate 203 along the Y-axis. To better clamp the reinforcing bar, based on the surface characteristics of the reinforcing bar, the clamping surfaces of the first positioning plate 204 and the second positioning plate 205 in this embodiment are both concave surfaces 206.

[0070] It also includes a drive cylinder that is vertically mounted along the Y-axis on the outer side of the first clamping plate 203. The output end of the drive cylinder is located between the first positioning plate 204 and the second positioning plate 205 and is connected to an inner clamping plate 207. In other words, the inner clamping plate 207 is located between the first positioning plate 204 and the second positioning plate 205.

[0071] Correspondingly, the second clamping component includes a second clamping plate 208 connected to the output end of the gripper cylinder 202. A mounting block 209 is connected to the second clamping plate 208, and the clamping surface of the mounting block 209 has at least two sets of mounting grooves 210; each set of mounting grooves 210 has a corresponding pressure wheel 211 installed in it.

[0072] To further understand, when the connection end of the rebar is in the threading stage, the external force on the rebar is the pressure given by the cutter head 303-d. At this time, the drive cylinder and the inner clamping plate 207 are in a compressed state, meaning there is no contact between the inner clamping plate 207 and the rebar. Therefore, the rebar can be slightly shaken to distribute the force to the corresponding pressure roller 211 and the bearing of the roller, thereby reducing overall shaking and ensuring the stability and accuracy of the threading.

[0073] When the reinforcing bar needs to move a short distance to generate pitch, the inner clamping plate 207 needs to be pushed out by the drive cylinder to compress the reinforcing bar, thereby increasing the friction and achieving short-distance clamping movement, which is a dynamic positioning mode.

[0074] In another embodiment, combined with Figure 3 The rotary thread cutter 3 includes a tool holder 301, comprising a base, a body 302 connected to the base, and a mounting cavity formed inside the body 302. The base has a connecting end and is configured to be driveably connected to the drive mechanism 4, such as the rotating roller in the drive mechanism 4 described above. The mounting cavity is configured to mount the connector locator. Furthermore, it also includes three sets of thread cutter assemblies 303 distributed at predetermined distances within the body 302. This uniform distribution ensures that the cutter heads 303-d, when acting on the reinforcing bars, maintain a balanced force on the reinforcing bars, thus improving accuracy.

[0075] like Figure 4As shown, the thread cutter assembly 303 includes: a guide seat 303-a installed within the body 302, and an arc-shaped guide groove 303-b formed on the guide seat 303-a. A tool holder 303-c is movably mounted within the guide seat 303-a, and a guide post 303-e is provided on one side of the tool holder 303-c, the guide post 303-e being adapted to the arc-shaped guide groove 303-b.

[0076] A rotary cylinder is provided below the guide seat 303-a, and the bottom of the tool holder 303-c is rotatably connected to the rotating rod of the rotary cylinder. Correspondingly, a tool head 303-d is fixedly mounted on the top of the tool holder 303-c. Driven by the rotary cylinder, the tool head 303-d, in conjunction with the arc-shaped guide groove 303-b and the guide post 303-e, adjusts the cutting depth. Therefore, in this embodiment, the arc-shaped guide groove 303-b is horizontally oriented. Under the action of the rotary cylinder, the tool holder 303-c rotates along the arc-shaped guide groove 303-b, causing a change in the distance between the head of the tool head 303-d and the center of the mounting cavity, thereby adjusting the cutting depth.

[0077] Similarly, to ensure stability, a connector locator is used at the cutter head 303-d to position the rebar connector. To accommodate rebars of different sizes, this embodiment makes the following improvements: First, as shown in the figure, the mounting cavity includes an interconnected mounting cavity and an operating cavity. The connector locator includes a detachable positioning cylinder 304 installed within the mounting cavity, wherein the bottom of the positioning cylinder 304 has a through hole. The detachable design allows for the replacement of positioning cylinders 304 with different inner diameters to meet the needs of different rebars.

[0078] Furthermore, a lifting cylinder 305 is fixed inside the operating cavity. A compression spring 306 is connected to the output end of the lifting cylinder 305. A positioning rod 307 is connected to the other end of the compression spring 306. The top of the positioning rod 307 passes through the through hole and is provided with a positioning protrusion 308.

[0079] In this embodiment, a compression spring 306 is added between the positioning rod 307 and the lifting air rod to act as a buffer when pressure is applied to the rebar joint, and also to provide a damping effect when threading.

[0080] Considering the instability of the compression spring 306, a guide member 309 is fixed to the top of the positioning rod 307. The guide member 309 includes an umbrella-shaped connecting ring 309-a and a collar 309-b fixed to the end of the connecting ring 309-a; the collar 309-b is adapted to the through hole. In other words, the engagement of the collar 309-b with the through hole serves a guiding function to ensure that the movement does not deviate.

[0081] Example 2

[0082] Based on the portable rebar straight thread cutting machine disclosed in Embodiment 1, this embodiment discloses a thread cutting method for the portable rebar straight thread cutting machine, combined with... Figure 6 Includes the following steps:

[0083] Threading machine reset: Select a positioning cylinder that matches the outer diameter of the rebar to be processed and install it in the mounting cavity. Ensure the cutting head of the rotating threading tool does not overlap with the positioning cylinder. Control the lifting cylinder to be in the ejected state. Define the coordinates of the current positioning protrusion as follows: Correspondingly, the center coordinates of the positioning plate inside the rebar positioning mechanism are: The first clamping member and the second clamping member are far apart from each other to form a clamping space;

[0084] Loading the steel bar to be processed: Pass the waiting end of the steel bar to be processed through the clamping space to reach the positioning cylinder and contact the positioning protrusion until the compression spring is fully compressed. Then the first clamping member and the second clamping member come together to position it, which is a dynamic positioning mode.

[0085] For cutting straight threads on reinforcing bars: While the drive mechanism controls the rotation of the rotary thread cutter, the rotary cylinder inside the thread cutter assembly rotates the cutter handle at a predetermined speed. The cutter handle rotates under the action of the arc-shaped guide groove and the guide post, which increases the cutting depth of the cutter head until the current thread ring is cut; the cutter head returns to the initial state: the cutter head and the positioning cylinder do not overlap.

[0086] Straight thread pitch generation: The drive cylinder controls the inner clamp plate to push out, further limiting the reinforcing bar to enter the solid positioning mode; based on the thread pitch... Simultaneously, the compression lifting cylinder and the rotation of the forward and reverse motors are adjusted to make the coordinates of the current positioning bump... The center coordinates of the positioning plate are The compression spring remains in a fully compressed state, driving the cylinder to switch to the compression state and enter the dynamic positioning mode;

[0087] This process is repeated to generate straight threads and straight thread pitch on the reinforcing bars.

Claims

1. A portable rebar straight thread cutting machine, comprising a vehicle body having a degree of freedom of movement; defining the length of the vehicle body as the X-axis and the width as the Y-axis; characterized in that, Also includes: A rebar positioning mechanism is located at one end of the vehicle body; the rebar positioning mechanism has an adjustable positioning space and a floating space of a predetermined length in the X-axis; A rotary threading cutter is positioned opposite to the rebar positioning mechanism in the X-axis direction; the rotary threading cutter has rotational freedom and is equipped with a connector locator inside; the connector locator controls the reciprocating freedom of the rebar in the X-axis direction; The drive mechanism is connected to the rotating threading tool. The rotary threading tool includes: a tool holder, comprising: a base, a body connected to the base, and a mounting cavity formed inside the body; the base has a connecting end and is configured to be drive-connected to the drive mechanism, and the mounting cavity is configured to mount the connector locator; At least one set of thread cutter assemblies is distributed within the body at predetermined intervals; the thread cutter assembly includes: A guide seat is installed inside the main body; the guide seat is provided with an arc-shaped guide groove; The tool holder is movably fitted inside the guide seat; a guide post is provided on one side of the tool holder, and the guide post is adapted to the arc-shaped guide groove; A rotary cylinder is located below the guide seat; the bottom of the tool holder is rotatably connected to the rotary cylinder's rotating rod. The cutting head is fixedly mounted on the top of the cutting handle; the cutting head, driven by a rotary cylinder, adjusts the cutting depth by combining an arc-shaped guide groove and a guide post.

2. The portable rebar straight thread cutting machine according to claim 1, characterized in that, The rebar positioning mechanism includes: A floating component is mounted on the upper surface of the vehicle body; The gripper cylinder is connected to the output end of the floating assembly. The first clamping member and the second clamping member are respectively disposed at the two output ends of the gripper cylinder; the working modes between the first clamping member and the second clamping member include at least: solid positioning mode and dynamic positioning mode.

3. A portable rebar straight thread cutting machine according to claim 2, characterized in that, The floating component includes: The forward and reverse rotating motors and the support base are arranged adjacent to each other along the X-axis; A threaded rod is rotatably mounted within the bearing seat; The positioning plate is connected to the threaded rod via a threaded drive; the threaded rod is configured as a fixed gripper cylinder.

4. A portable rebar straight thread cutting machine according to claim 2, characterized in that, The first clamping member includes: The first clamping plate is configured to be connected to the gripper cylinder; The first positioning plate and the second positioning plate are fixed perpendicularly to the two end faces of the first clamping plate along the Y-axis; the clamping surfaces of the first positioning plate and the second positioning plate are both concave surfaces. A drive cylinder is installed perpendicularly along the Y-axis on the outer side of the first clamping plate; The inner clamping plate is disposed between the first positioning plate and the second positioning plate and is drively connected to the output end of the drive cylinder.

5. A portable rebar straight thread cutting machine according to claim 2, characterized in that, The second clamping member includes: The second clamping plate is configured to connect to the gripper cylinder; The mounting block is connected to the second clamping plate; the clamping surface of the mounting block has at least two sets of mounting grooves. Several clamping rollers are installed in the mounting slots.

6. A portable rebar straight thread cutting machine according to claim 1, characterized in that, The drive mechanism includes: A drive motor is mounted on one side of the rotating threading tool; The drive wheel is fixed to the output shaft of the drive motor; A rotating roller is mounted on the vehicle body via a bracket; the rotating roller is fixedly connected to the center of the connecting end. The driven wheel is mounted on the rotating roller; the driven wheel and the driving wheel are connected by a transmission belt.

7. A portable rebar straight thread cutting machine according to claim 1, characterized in that, The mounting cavity includes an interconnected mounting cavity and an operating cavity; the connector positioner includes: A positioning cylinder is detachably installed in the mounting cavity; a through hole is provided at the bottom of the positioning cylinder; A lifting cylinder is fixed inside the operating chamber; A compression spring, one end of which is connected to the output end of the lifting cylinder; A positioning rod, one end of which is connected to the other end of a compression spring; the other end of the positioning rod passes through the through hole and is provided with a positioning protrusion.

8. A portable rebar straight thread cutting machine according to claim 7, characterized in that, Also includes: A guide member is fixed at the other end of the positioning rod; the guide member includes: an umbrella-shaped connecting ring, and a collar fixed at the end of the connecting ring; The collar is adapted to the through hole.

9. A method for threading steel bars using a portable rebar straight threading machine as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Threading machine reset: Select a positioning cylinder that matches the outer diameter of the rebar to be processed and install it in the mounting cavity. Ensure the cutting head of the rotating threading tool does not overlap with the positioning cylinder. Control the lifting cylinder to be in the ejected state. Define the coordinates of the current positioning protrusion as follows: Correspondingly, the center coordinates of the positioning plate inside the rebar positioning mechanism are: The first clamping member and the second clamping member are far apart from each other to form a clamping space; Loading the steel bar to be processed: Pass the waiting end of the steel bar to be processed through the clamping space to reach the positioning cylinder and contact the positioning protrusion until the compression spring is fully compressed. Then the first clamping member and the second clamping member come together to position it, which is a dynamic positioning mode. For cutting straight threads on reinforcing bars: While the drive mechanism controls the rotation of the rotary thread cutter, the rotary cylinder inside the thread cutter assembly rotates the cutter handle at a predetermined speed. The cutter handle rotates under the action of the arc-shaped guide groove and the guide post, which increases the cutting depth of the cutter head until the current thread ring is cut. The cutter head returns to its initial state: the cutter head and the positioning cylinder do not overlap; Straight thread pitch generation: The drive cylinder controls the inner clamp plate to push out, further limiting the reinforcing bar to enter the solid positioning mode; based on the thread pitch... Simultaneously, the compression lifting cylinder and the rotation of the forward and reverse motors are adjusted to make the coordinates of the current positioning bump... The center coordinates of the positioning plate are The compression spring remains in a fully compressed state, driving the cylinder to switch to the compression state and enter the dynamic positioning mode; This process is repeated to generate straight threads and straight thread pitch on the reinforcing bars.

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