Thread rolling cutterhead device and reinforcing steel bar machining equipment

Abstract

The utility model provides a thread rolling cutter head device and reinforcing steel bar machining equipment. The thread rolling cutter head device comprises a transition disc, a cutter head rack; the thread rolling tool apron assembly is in sliding connection with the cutter head frame; the two thread rolling wheels with different thread pitches are mounted at the head of the thread rolling tool apron assembly in a staggered manner; the thread rolling worm wheel assembly can rotate around the axis of the cutter head frame; the tail part of the thread rolling tool apron assembly is in contact sliding with a boss surface on the inner side of the thread rolling worm gear assembly; the tool setting assembly drives the thread rolling worm gear assembly to rotate, and automatic tool setting of steel bars with different diameters and specifications is achieved; after steel bars are machined, the tool adjusting assembly is used for driving the thread rolling worm gear assembly to rotate, and rapid tool retracting is achieved; and the positive and negative thread adjusting mechanism drives the thread rolling wheel to move up and down to realize positive and negative thread switching. According to the automatic thread rolling machine, automatic tool setting of reinforcing steel bars with different diameters, automatic tool changing of reinforcing steel bars with different screw pitches, automatic switching of positive and negative threads and rapid tool retracting after machining can be achieved, automatic thread rolling machining of the reinforcing steel bars is achieved, and the efficiency of thread rolling machining of the reinforcing steel bars is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar processing equipment, in particular to a thread rolling cutter disc device and steel bar processing equipment. Background Art

[0002] There are many types of steel bar thread rolling machines on the market, which can produce steel bar thread rolling with P2.5 and P3.0 pitch (including positive and negative threads). However, when switching steel bar specifications, most of them require manual adjustment of the position of the thread rolling wheel, and when switching positive and negative threads, the position of the gasket needs to be adjusted manually, which takes a long time to replace and adjust, and is time-consuming and laborious. In addition, most thread rolling machines use reverse retraction when retracting the cutter, which doubles the processing time.

[0003] The patent application publication number CN113926965A discloses a new type of external thread full expansion thread rolling machine head and ancillary devices, including a fixed base plate, a rib stripping positioning plate is arranged on the side of the fixed base plate, the rib stripping positioning plate and the fixed base plate are rotatably connected, a rib stripping compression spring column spring is arranged on the inner side of the rib stripping positioning plate, a tool mounting seat is arranged on the side of the rib stripping positioning plate, the tool mounting seats are evenly spaced around the axis of the rib stripping positioning plate, and a thread rolling positioning plate is arranged on the side of the fixed base plate. This patent allows the rib stripping positioning plate and the thread rolling positioning plate to be adjusted by an involute adjustment method, and scale lines are printed on the outer surface of the thread rolling positioning plate and the rib stripping positioning plate to assist in adjustment. However, this method still requires manual adjustment and cannot automatically adjust the tool, and does not solve the problems of long adjustment time, time-consuming and labor-intensive process in the steel bar thread rolling process. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a thread rolling cutter disc device and steel bar processing equipment.

[0005] According to one aspect of the utility model, a thread rolling cutter disc device is provided, the device comprising:

[0006] Knife plate holder;

[0007] A transition plate, one end of which is connected to the cutter head frame, and the other end of which is connected to the power system;

[0008] The thread rolling cutter seat assembly is evenly arranged on the surface of the cutter disc frame, and the thread rolling cutter seat assembly is slidably connected to the cutter disc frame; the thread rolling cutter seat assembly includes two thread rolling wheels with different pitches, and the two thread rolling wheels with different pitches are staggeredly installed on the head of the thread rolling cutter seat assembly;

[0009] A thread rolling worm gear assembly is installed on the circumference of the cutter disc frame, and the thread rolling worm gear assembly can rotate around the axis of the cutter disc frame; a boss surface is provided on the inner side of the thread rolling worm gear assembly, and the tail of the thread rolling cutter seat assembly contacts and slides with the boss surface;

[0010] A tool setting component is provided on the outer periphery of the tool disc holder. The tool setting component drives the thread rolling worm wheel component to rotate, causing the thread rolling wheel to slide radially along the tool disc holder, realizing automatic tool setting for different diameters of steel bar specifications; after processing the steel bar, the tool setting component is used to drive the thread rolling worm wheel component to rotate, causing the thread rolling tool holder component to quickly expand along the convex table surface, realizing quick tool withdrawal;

[0011] A positive and negative thread adjustment mechanism is fixed on the thread rolling tool holder component. The positive and negative thread adjustment mechanism drives the thread rolling wheel to move up and down to realize positive and negative thread switching.

[0012] Optionally, the thread rolling tool holder component includes:

[0013] A tool holder. A radial sliding groove is provided on the tool disc holder, and the tool holder slides along the sliding groove; an installation platform is provided at the head of the tool holder, and the thread rolling wheel is arranged on the installation platform;

[0014] A tool rod that passes through the axis of the thread rolling wheel.

[0015] Optionally, the thread rolling wheel includes a P2.5 thread rolling wheel and a P3.0 thread rolling wheel.

[0016] Optionally, a spring is provided on the side of the tool holder, and the spring is used to provide a resilience force to make the tool holder fit with the convex table surface.

[0017] Optionally, the positive and negative thread adjustment mechanism includes:

[0018] An upper plate of the tool holder, located above the tool holder;

[0019] A cylinder, installed on the upper plate of the tool holder;

[0020] A tool fork, located on the upper plate of the tool holder. The output end of the cylinder is connected to the tool fork, and the cylinder pushes the tool fork to move in the length direction; sliding grooves are provided on both side surfaces of the tool fork; one end of the sliding groove close to the head of the tool fork is higher than the other end, and the height difference between the two sides of the sliding groove along the length direction is fixed, and the middle section of the sliding groove is a curve;

[0021] A pressing block, covering above the tool fork, and the pressing block is used to limit the up and down displacement of the tool fork;

[0022] A rotating shaft passes through the tool rod and the sliding groove. As the tool fork moves in the length direction, the rotating shaft drives the tool rod and the thread rolling wheel to move in the length direction of the tool rod.

[0023] Optionally, the convex table surface is divided into three sections, successively including a P2.5 tool holder transition slope section, a working position section, and a P3.0 tool holder transition slope section. The working position section is shared by the P2.5 thread rolling wheel and the P3.0 thread rolling wheel for processing.

[0024] Optionally, the working bit section is an Archimedean spiral that rises spirally.

[0025] Optionally, the outer side of the thread rolling worm and wheel assembly is a gear, and the gear meshes with the tool setting assembly.

[0026] Optionally, the tool setting assembly includes:

[0027] A tool setting motor, a speed reducer, and a first gear connected in sequence. The coaxial mechanism formed by the tool setting motor and the speed reducer acts on the first gear;

[0028] A worm. A second gear is provided above the worm, and the second gear meshes with the first gear; the worm meshes with the gear to realize the rotation of the thread rolling worm and wheel assembly.

[0029] According to another aspect of the present invention, a steel bar processing device is provided, and the device includes the above-mentioned thread rolling cutter head device.

[0030] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0031] Through the mutual cooperation of each component, the tool setting assembly drives the thread rolling worm and wheel assembly to rotate, so that the thread rolling wheels in the thread rolling tool holder assembly slide radially along the cutter head frame, realizing automatic tool setting for steel bars of different diameters; by rotating the thread rolling worm and wheel assembly and setting a convex table surface on the inner side, automatic tool change for steel bars of different pitches is realized; by driving the thread rolling wheels to move up and down through the positive and reverse thread adjustment mechanism, automatic switching between positive and reverse threads is realized; after the steel bar is processed, the tool setting assembly drives the cutter head frame to rotate so that the thread rolling tool holder assembly quickly expands along the convex table surface to avoid the steel bar thread head, thereby realizing rapid tool retraction after processing is completed. The thread rolling cutter head device and the steel bar processing device provided by the present invention do not require manual participation, realize automatic thread rolling of steel bars, and greatly improve the efficiency of steel bar thread rolling processing. Description of the Drawings

[0032] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes, and advantages of the present invention will become more obvious:

[0033] Figure 1 It is a schematic structural diagram of the thread rolling cutter head device in an embodiment of the present invention;

[0034] Figure 2 It is a schematic cross-sectional structural diagram of the thread rolling cutter head device in an embodiment of the present invention;

[0035] Figure 3 It is a schematic rear view structural diagram of the thread rolling cutter head device in an embodiment of the present invention;

[0036] Figure 4 Schematic diagram of the tool adjustment assembly in an embodiment of the present utility model;

[0037] Figure 5 Schematic diagram of the thread rolling worm wheel assembly in an embodiment of the present utility model;

[0038] Figure 6 Schematic diagram of the positive and negative thread adjustment mechanism in an embodiment of the present utility model;

[0039] Figure 7 Schematic diagram of the tool fork in an embodiment of the present utility model;

[0040] Figure 8 Side view schematic diagram of the tool fork in an embodiment of the present utility model;

[0041] Figure 9 Schematic diagram of P3.0 thread rolling positive thread in an embodiment of the present utility model;

[0042] Figure 10 Schematic diagram of P2.5 thread rolling positive thread in an embodiment of the present utility model;

[0043] Figure 11 Schematic diagram of the rapid tool retraction and tool expansion position in an embodiment of the present utility model;

[0044] Figure 12 Schematic diagram of the positive and negative thread movement in an embodiment of the present utility model;

[0045] The corresponding reference numerals are: 1 - tool disc holder, 2 - thread rolling tool holder assembly, 3 - thread rolling worm wheel assembly, 4 - tool adjustment assembly, 5 - positive and negative thread adjustment mechanism, 6 - transition disc;

[0046] 21 - tool holder, 22 - thread rolling wheel, 23 - tool rod, 24 - spring;

[0047] 31 - worm wheel, 32 - gear, 33 - P2.5 tool holder transition slope section, 34 - working position section, 35 - P3.0 tool holder transition slope section;

[0048] 41 - tool adjustment motor, 42 - reducer, 43 - first gear, 44 - second gear, 45 - worm;

[0049] 51 - upper plate of the tool holder, 52 - tool fork, 521 - chute, 53 - cylinder, 54 - pressing block, 55 - rotating shaft. Detailed implementation manners

[0050] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made. These all belong to the protection scope of the present utility model.

[0051] Referring to Figures 1-8 , a thread rolling cutter head device provided by an embodiment of the present utility model can achieve automatic tool setting, automatic tool changing, rapid tool retraction, and automatic switching between right and left hand threads. The device includes: a transition disk 6, a cutter head frame 1, a thread rolling cutter seat assembly 2, a thread rolling worm wheel assembly 3, a tool setting assembly 4, and a right and left hand thread adjustment mechanism 5; wherein: one end of the transition disk 6 is connected to the cutter head frame 1, and the other end is connected to an external power system to achieve power transmission; the thread rolling cutter seat assemblies 2 are evenly arranged on the surface of the cutter head frame 1, and the thread rolling cutter seat assemblies 2 are slidably connected to the cutter head frame 1; exemplarily, the thread rolling cutter seat assemblies 2 are connected to the cutter head frame 1 through a sliding pair; the thread rolling cutter seat assembly 2 includes thread rolling wheels 22 with two different pitches, and the two thread rolling wheels 22 with different pitches are staggeredly installed at the head of the thread rolling cutter seat assembly 2, and the head is the end close to the center of the cutter head frame 1; the thread rolling worm wheel assembly 3 is installed circumferentially on the cutter head frame 1, the thread rolling worm wheel assembly 3 is embedded inside the cutter head frame 1, and is rotationally matched with the cutter head frame 1 along the axis, and the thread rolling worm wheel assembly 3 can rotate around the axis of the cutter head frame 1; on the inner side of the thread rolling worm wheel assembly 3, that is, on the side close to the cutter head frame 1, there is a convex table surface, and the tail of the thread rolling cutter seat assembly 2 is in contact with and slides on the convex table surface, which can realize automatic tool changing for reinforcing bars with different pitches; the tool setting assembly 4 is arranged on the outer periphery of the cutter head frame 1, and the tool setting assembly 4 drives the thread rolling worm wheel assembly 3 to rotate, so that the thread rolling wheels 22 slide radially along the cutter head frame 1 to realize automatic tool setting for different diameters of reinforcing bar specifications; after processing the reinforcing bar, the tool setting assembly 4 is used to drive the thread rolling worm wheel assembly 3 to rotate, such as Figure 1 and Figure 2 in, when rotating counterclockwise, the convex table surface has a tendency to open, and the thread rolling worm wheel assembly 3 rotates counterclockwise, so that the thread rolling cutter seat assembly 2 quickly expands along the convex table surface to avoid the thread head of the reinforcing bar and realize rapid tool retraction; the right and left hand thread adjustment mechanism 5 is fixed on the thread rolling cutter seat assembly 2, and the right and left hand thread adjustment mechanism 5 drives the thread rolling wheels 22 to move up and down to realize the switching between right and left hand threads.

[0052] In some embodiments, the thread rolling cutter seat assembly 2 further includes a cutter seat 21 and a cutter bar 23. The cutter head frame 1 is provided with a radial sliding groove, and the cutter seat 21 slides along the sliding groove of the cutter head frame to form a sliding pair. The head of the cutter seat 21 is provided with a mounting table, and the thread rolling wheels 22 are arranged on the mounting table; the cutter bar 23 passes through the axis of the thread rolling wheels 22.

[0053] In some embodiments, the thread rolling wheels 22 include P2.5 thread rolling wheels and P3.0 thread rolling wheels, and there are 3 P2.5 thread rolling wheels and 3 P3.0 thread rolling wheels respectively, which can meet the requirements of steel bar processing in the building construction market.

[0054] Exemplarily, there are 6 groups of thread rolling tool holder assemblies 2 in total. Among them, there are three groups of P2.5 thread rolling wheels and three groups of P3.0 thread rolling wheels, which are staggered and installed on the head of the thread rolling tool holder assembly 2. The thread rolling wheels 22 are evenly arranged and can clamp the steel bars. If other numbers of thread rolling wheels 22 are used, the phenomenon that the steel bars to be processed cannot be clamped tightly may occur.

[0055] In some embodiments, a spring 24 is provided inside the thread rolling tool holder assembly 2. Specifically, the spring 24 is located on the side of the tool holder 21. The tool setting assembly 4 drives the thread rolling worm wheel assembly 3 to rotate counterclockwise. The convex table surface inside the thread rolling worm wheel assembly 3 tends to open. The spring 24 is used to provide a return force to make the tool holder 21 fit with the convex table surface inside the thread rolling worm wheel assembly 3. As Figure 2 shown, under the action of the spring force, the tool holder 21 quickly opens outwards, that is, slides towards the outside of the tool holder 21.

[0056] In some embodiments, the positive and negative thread adjustment mechanism 5 includes an upper tool holder plate 51, a cylinder 53, a tool fork 52, a pressing block 54, and a rotating shaft 55, where: The upper tool holder plate 51 is located above the tool holder 21. The thread rolling wheel 22 is installed on the tool holder 21 and the upper tool holder plate 51 through a tool rod 23 and can slide up and down; The cylinder 53 is installed on the upper tool holder plate 51; The tool fork 52 is located on the upper tool holder plate 51, and the output end of the cylinder 53 is connected to the tool fork 52. The cylinder 53 pushes the tool fork 52 to move in the length direction; On both sides of the tool fork 52 near one end of the thread rolling wheel 22, there are sliding grooves 521 for raising and lowering the thread rolling wheel 22; Specifically, the sliding groove 521 is a high-low groove. One end near the head of the tool fork 52 is higher than the other end. Along the length direction, the height difference between the two sides of the sliding groove 521 is fixed, and the middle section is connected by a curve. The form of the curve is not limited, the length is not limited, and the height direction is not limited. Exemplarily, the height difference used for the P3.0 thread rolling wheel is 2 mm, and the height difference used for the P2.5 thread rolling wheel is 1.67 mm; The pressing block 54 covers the tool fork 52. The pressing block 54 is used to limit the up and down displacement of the tool fork 52 to ensure that the tool fork 52 only slides back and forth; The rotating shaft 55 passes through the tool rod 23 and the sliding groove 521. Both ends of the rotating shaft 55 are located in the sliding groove 521 of the tool fork 52. The rotating shaft 55 can be a pin shaft. As the tool fork 52 moves in the length direction, the rotating shaft 55 slides in the sliding groove 521. The rotating shaft 55 drives the tool rod 23 and the thread rolling wheel 22 to move in the length direction of the tool rod 23. The cylinder 53 drives the thread rolling wheel 22 to move up and down, thereby realizing the switching between positive and negative threads. Exemplarily, taking a group of thread rolling wheels 22 with unchanged height, that is, without using the sliding groove for position adjustment, as the reference, its position is the middle; When the rotating shaft 55 is located at the higher end of the sliding groove 521, the corresponding position of the thread rolling wheel 22 is high. When the rotating shaft 55 is located at the lower end of the sliding groove 521, the corresponding position of the thread rolling wheel 22 is low. When the three groups of working thread rolling wheels are high, middle, and low in the clockwise direction respectively, the processing is positive thread. When the clockwise direction is low, middle, and high, the processing is negative thread.

[0057] In the embodiment of the present utility model, the outer side of the thread rolling worm wheel assembly 3 is a worm wheel 31, and the inner side is a convex table surface. In some embodiments, three groups of convex table surfaces are provided on the inner side. Each group of convex table surfaces is divided into three sections, successively including a P2.5 tool holder transition slope section 33, a working position section 34, and a P3.0 tool holder transition slope section 35. The working position section 34 is shared by the P2.5 thread rolling wheel and the P3.0 thread rolling wheel for processing. The P2.5 tool holder transition slope section 33 and the P3.0 tool holder transition slope section 35 are the necessary paths for switching the thread rolling wheel 22 from the working position to the non-working position; The working position section 34 can be set in one section or multiple sections. However, due to limited space, one shared working position section 34 is set to save space. Exemplarily, for a structure with three groups of P2.5 thread rolling wheels and three groups of P3.0 thread rolling wheels each, when the convex table surface rotates to the positions of the other three tool holders, the P2.5 and P3.0 thread rolling wheels can be switched, thereby realizing tool change.

[0058] In some embodiments, the working position section 34 is an Archimedean spiral that spirals upward. As a curve on a convex table surface, the Archimedean spiral can adjust the distance of the three sets of thread rolling wheels 22 to meet the processing of steel bars with different diameter specifications. The Archimedean spiral can also make the adjustment speed change uniformly. In some other embodiments, other forms of cam curves can also be used as long as they can achieve the same functions described above.

[0059] In some embodiments, the outer side of the thread rolling worm gear assembly 3 is a gear 32, and the gear 32 meshes with the tool adjustment assembly 4.

[0060] In some embodiments, the tool adjustment assembly 4 includes a tool adjustment motor 41, a speed reducer 42, a first gear 43, and a worm 45. The tool adjustment motor 41, the speed reducer 42, and the first gear 43 are connected in sequence. The coaxial mechanism formed by the tool adjustment motor 41 and the speed reducer 42 acts on the first gear 43. A second gear 44 is provided above the worm 45, and the second gear 44 meshes with the first gear 43. The worm 45 meshes with the gear 32 to realize the rotation of the thread rolling worm gear assembly 3. When the tool adjustment motor 41 rotates, through gear transmission, the worm 45 and the worm gear 31 are driven to rotate, realizing the rotation of the thread rolling worm gear assembly 3.

[0061] In the above embodiments, the convex table surface has a tendency to open in the counterclockwise direction. If the thread rolling worm gear assembly 3 rotates clockwise, the tool holder 21 will slide inward, making the three thread rolling wheels 22 closer and closer. By driving the thread rolling worm gear assembly 3 to rotate counterclockwise through the tool adjustment motor 41, the three thread rolling wheels 22 move away from each other, thus realizing rapid tool withdrawal.

[0062] Using the thread rolling cutter head device in the above embodiments of the present utility model, the working processes of automatic tool adjustment, automatic tool change, rapid tool withdrawal, and automatic switching between left and right hand threads are as follows:

[0063] Tool adjustment method: Since the spacings of the thread rolling wheels 22 corresponding to steel bars with different diameter specifications are different, the rotation angle of the thread rolling worm gear assembly 3 is set according to the diameter of the steel bar. The tool adjustment assembly 4 drives the worm gear 31 of the thread rolling worm gear assembly 3 to rotate to the set angle through the tool adjustment motor 41. The tool holder 21 moves along the radial sliding groove on the cutter head frame 1, and the tool holder 21 of the thread rolling tool holder assembly 2 drives the thread rolling wheels 22 to move radially along the cutter head frame 1, realizing the change of the processed steel bar diameter;

[0064] Tool change method: As shown in Figure 9 and Figure 10 , the tool adjustment assembly 4 drives the worm gear 31 to rotate continuously through the tool adjustment motor 41, so that the working position section 34 of the convex table surface is changed from the P3.0 tool holder to the P2.0 tool holder, thus realizing automatic tool change;

[0065] Rapid tool withdrawal: As shown in Figure 11As shown, after processing the steel bars, the tool-adjusting motor 41 drives the worm gear 31 to rotate. Exemplarily, it rotates 5°, causing the thread rolling tool holder assembly 2 to expand rapidly, enabling the steel bars and the thread rolling wheels 22 to be completely separated. Then, the thread rolling cutter head device can rapidly retract the tool. After the tool retraction is completed, the tool is adjusted back to the working position.

[0066] Positive and negative thread switching: As Figure 12 shown, the cylinder 53 acts to drive the tool fork 52 to move back and forth, adjusting the height of the high and low slots of the tool fork for positive and negative threads. The height of one set of thread rolling wheels (medium) remains unchanged as a reference. When the three working sets of thread rolling wheels are in the clockwise direction of high, medium, and low respectively, the processing is for positive threads, and vice versa for negative threads.

[0067] The thread rolling cutter head device in the above embodiments of the present utility model is mainly used in the housing construction market. The main demand in the housing construction market is for steel bars with a diameter specification of φ16 - 40, and all of them can be processed using the above device. In some other embodiments, by adjusting the length of the curve in the working position section, it is also possible to process steel bars of other diameters or larger specifications.

[0068] Based on the same concept, another embodiment of the present utility model provides a steel bar processing device, which includes the above-mentioned thread rolling cutter head device.

[0069] The device provided in the above embodiments of the present utility model, through the interaction between various components, the tool-adjusting assembly drives the thread rolling worm gear assembly to rotate, causing the thread rolling wheels in the thread rolling tool holder assembly to slide radially along the cutter head frame, realizing automatic tool adjustment for steel bars of different diameters; by rotating the thread rolling worm gear assembly and providing a convex table surface on the inner side, automatic tool change for steel bars of different pitches is realized; by driving the thread rolling wheels to move up and down through the positive and negative thread adjustment mechanism, automatic switching between positive and negative threads is realized; after processing the steel bars, the tool-adjusting assembly drives the cutter head frame to rotate counterclockwise, enabling the thread rolling tool holder assembly to expand rapidly, avoiding the steel bar thread heads, and thus realizing rapid tool retraction after processing is completed. The thread rolling cutter head device and the steel bar processing device provided in the embodiments of the present utility model do not require manual participation, realizing automatic thread rolling of steel bars and greatly improving the efficiency of steel bar thread rolling processing.

[0070] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific implementation manners. Those skilled in the art can make various deformations or modifications within the scope of the claims, which do not affect the essence of the present utility model. The above preferred features can be combined arbitrarily without conflict.

Claims

1. A thread rolling cutter head device, characterized in that, Comprising: Tool disc holder; Transition disc, one end of the transition disc is connected to the tool disc holder, and the other end is connected to the power system; Thread rolling tool seat assembly, evenly arranged on the surface of the tool disc holder, the thread rolling tool seat assembly is slidably connected to the tool disc holder; the thread rolling tool seat assembly includes thread rolling wheels with two different pitches, and the thread rolling wheels with two different pitches are staggeredly installed at the head of the thread rolling tool seat assembly; Thread rolling worm wheel assembly, installed on the circumference of the tool disc holder, the thread rolling worm wheel assembly can rotate around the axis of the tool disc holder; a convex table surface is provided inside the thread rolling worm wheel assembly, and the tail of the thread rolling tool seat assembly is in sliding contact with the convex table surface; Tool setting assembly, arranged on the outer circumference of the tool disc holder, the tool setting assembly drives the thread rolling worm wheel assembly to rotate, so that the thread rolling wheel slides radially along the tool disc holder, realizing automatic tool setting for steel bars of different diameters; after processing the steel bars, the tool setting assembly is used to drive the thread rolling worm wheel assembly to rotate, so that the thread rolling tool seat assembly quickly expands along the convex table surface to realize quick tool retraction; Positive and negative thread adjustment mechanism, fixed on the thread rolling tool seat assembly, the positive and negative thread adjustment mechanism drives the thread rolling wheel to move up and down to realize positive and negative thread switching.

2. The hobbing cutter head device according to claim 1, wherein The thread rolling tool seat assembly includes: Tool seat, a radial sliding groove is provided on the tool disc holder, and the tool seat slides along the sliding groove; an installation table is provided at the head of the tool seat, and the thread rolling wheel is arranged on the installation table; Tool rod, the tool rod passes through the axis of the thread rolling wheel.

3. The hobbing cutter head device according to claim 1, characterized in that, The thread rolling wheel includes a P2.5 thread rolling wheel and a P3.0 thread rolling wheel.

4. The hobbing cutter head device according to claim 2, wherein, A spring is provided on the side of the tool seat, and the spring is used to provide a resilience force to make the tool seat fit with the convex table surface.

5. The hobbing cutter head device according to claim 2, wherein The positive and negative thread adjustment mechanism includes: Upper plate of the tool seat, located above the tool seat; Cylinder, installed on the upper plate of the tool seat; Tool fork, located on the upper plate of the tool seat, the output end of the cylinder is connected to the tool fork, and the cylinder pushes the tool fork to move in the length direction; sliding grooves are provided on both sides of the tool fork; one end of the sliding groove close to the head of the tool fork is higher than the other end, and the height difference between the two sides of the sliding groove along the length direction is fixed, and the middle section of the sliding groove is a curve; Pressure block, covering above the tool fork, the pressure block is used to limit the up and down displacement of the tool fork; Rotating shaft, passing through the tool rod and the sliding groove, as the tool fork moves in the length direction, the rotating shaft drives the tool rod and the thread rolling wheel to move in the length direction of the tool rod.

6. The hobbing cutter head device according to claim 1, characterized in that, The convex table surface is divided into three sections, successively including a P2.5 tool seat transition slope section, a working position section, and a P3.0 tool seat transition slope section, and the working position section is shared by the P2.5 thread rolling wheel and the P3.0 thread rolling wheel for processing.

7. The hobbing cutter head device according to claim 6, wherein, The working position section is an Archimedean spiral line that spirally ascends.

8. The hobbing cutter head device according to claim 1, wherein The outer side of the thread rolling worm wheel assembly is a gear, and the gear meshes with the tool setting assembly.

9. The hobbing cutter head device according to claim 8, characterized in that, The tool setting assembly includes: A tool setting motor, a reducer, and a first gear connected in sequence, and the coaxial mechanism composed of the tool setting motor and the reducer acts on the first gear; A worm, a second gear is provided above the worm, and the second gear meshes with the first gear; the worm meshes with the gear to realize the rotation of the thread rolling worm wheel assembly.

10. A steel bar processing device, characterized in that, It includes the thread rolling cutter head device according to any one of claims 1-9.

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