A stainless steel screw thread processing machine and method thereof

Abstract

The present invention relates to the technical field of thread processing, and specifically, to a stainless steel screw thread processing machine and a method thereof. The machine comprises a machine body and a three-jaw chuck, a symmetrical sliding seat is slidably provided on the surface of a connecting plate, a limiting assembly is provided on the surface of each sliding seat, the limiting assembly is fitted with the surface of a workpiece, a supporting assembly is provided between the limiting assemblies, the limiting assembly forms a triangular stable structure for the workpiece placed on the surface of the supporting assembly, and a cutting assembly is provided on one side of the limiting assembly. The present invention drives the sliding seat to move horizontally through a piston rod at the end of a first cylinder, so that the limiting roller is closely fitted with the side wall of the workpiece, the rotation of the workpiece drives the limiting roller to rotate, so that the main gear provided at the end of the limiting roller drives the driven gear to rotate, and the mobile cutter provided at the end of the tooth pattern frame moves relative to each other, so that the mobile cutters squeeze each other, destroy the waste material coiled near the workpiece, and make the waste material fall in the form of irregular strips, reduce the harm caused to personnel when cleaning the waste material, and improve the safety of the processing operation.

Description

Technical Field

[0001] The invention relates to the technical field of thread processing, in particular to a stainless steel lead screw thread processing machine and a method thereof. Background Art

[0002] The lead screw is an ideal product for converting rotary motion into linear motion or converting linear motion into rotary motion. The lead screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or to convert torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. In the machining industry, especially when turning long shafts, it is often necessary to process the long lead screw thread.

[0003] There are many existing technologies for screw thread processing devices, such as:

[0004] Chinese patent publication number CN112264679A discloses an external thread grinder for ball screw, comprising a support table, a body fixedly installed on the left side of the top of the support table, a fixed plate fixedly installed on the right side of the back of the support table, a dust storage box arranged on the back of the fixed plate, and a dust suction pump connected to the top of the dust storage box. The present invention absorbs the dust generated during the processing by using a dust hood and transports it to the inside of the dust storage box, thereby avoiding the influence of excessive dust on the operator, and the debris generated during the processing will inevitably splash around, the debris can be shielded by a protective plate, and the protective plate can be manually folded and supported by a top rod, which is more convenient to shield the debris, and can also enhance the processing quality of the grinder, while solving the problem that a large amount of dust is generated when processing the ball screw, and large particles of debris splashing around will cause harm to the operator, and there are safety hazards during processing.

[0005] When the existing thread processing device is in use, a thread cutter is usually used to perform thread turning on the workpiece to form a thread on the workpiece surface. During the processing, since the cross-section of the waste material is triangular when the thread cutter cuts the workpiece, it is often coiled near the surface of the workpiece during the processing. Since the cross-section of the thread waste material is very sharp, it is easy for operators to scratch their hands when cleaning it, and the surface temperature of the waste material is high, which can easily cause safety hazards. At the same time, due to the long length of the screw rod, it is more difficult for operators to perform clamping operations, resulting in increased labor intensity.

[0006] Therefore, a stainless steel screw thread processing machine and method are proposed. Summary of the invention

[0007] The object of the present invention is to provide a stainless steel lead screw thread processing machine and method thereof to solve the problems raised in the above background technology.

[0008] To achieve the solution to the above technical problems, one of the purposes of the present invention is to provide a stainless steel screw thread processing machine, comprising a machine body and a three-jaw chuck, a thimble is provided on the side away from the three-jaw chuck, the thimble is used to fix the workpiece clamped on the inner wall of the three-jaw chuck, a movable tool holder is provided between the three-jaw chuck and the thimble, the movable tool holder moves on the surface of the machine body, a waste box is provided at the bottom of the machine body, the movable tool holder is used to perform thread turning on the workpiece clamped on the inner wall of the three-jaw chuck, connecting plates are provided at both ends of the movable tool holder, symmetrical sliding seats are slidably provided on the surface of the connecting plate, and limiting components are provided on the surface of the sliding seat, the limiting components are fitted with the surface of the workpiece, a supporting component is provided between the limiting components, the supporting component is used to support the workpiece, the limiting component forms a triangular stable structure for the workpiece placed on the surface of the supporting component, a cutting component is provided on one side of the limiting component, the limiting component drives the relative movement between the cutting components, and the cutting component cuts off the waste formed by the turning of the movable tool holder, so that the waste falls automatically under the action of gravity.

[0009] As a further improvement of the present technical solution, the limiting assembly includes a base arranged on the surface of the sliding seat, a support rod is arranged inside the base, a rotating rod is rotatably arranged on the surface of the support rod, a limiting roller is arranged on the top of the rotating rod, the limiting roller is in contact with the surface of the workpiece, and the limiting roller is driven to rotate by friction when the workpiece rotates, and a main gear is arranged on the end of the limiting roller.

[0010] As a further improvement of the present technical solution, a first elastic member is provided on the surface of the support rod, and the two ends of the first elastic member are respectively connected to the rotating rod and the inner wall of the base. In the natural state, the rotating rod is subjected to the force of the first elastic member and forms an angle of 75° with the horizontal plane.

[0011] As a further improvement of the present technical solution, the cutting assembly includes a support plate arranged on one side of the limiting roller, the support plate is provided with a toothed frame sliding away from the side of the limiting roller, a driven gear is provided at the end of the support plate, the driven gear meshes and rotates with the main gear, a half gear is provided at the end of the driven gear, the half gear meshes with the teeth inside the toothed frame, and a movable cutter is provided at the end of the toothed frame.

[0012] As a further improvement of the technical solution, the movable cutters are arranged vertically to each other, and when the movable cutters move relative to each other, they cut off the waste materials curled into balls between them.

[0013] As a further improvement of the technical solution, symmetrical first cylinders are provided on both sides of the connecting plate. The piston rods at the ends of the first cylinders penetrate the connecting plate and the ends are connected to the side walls of the sliding seats. The sliding seats are made to slide on the surface of the connecting plate by controlling the piston rods at the ends of the first cylinders.

[0014] As a further improvement of the technical solution, the support assembly includes a second cylinder arranged between the bases, the piston rod at the end of the second cylinder is provided with a frame plate, the surface of the frame plate is provided with support rollers, and the support rollers are used to support the workpiece.

[0015] As a further improvement of the technical solution, a sliding column is provided between the frame plate and the support roller, a sliding rod is slidably provided on the inner wall of the sliding column, and a second elastic member is provided between the sliding column and the sliding rod.

[0016] The second object of the present invention is to provide a stainless steel screw thread processing machine processing method, including any one of the stainless steel screw thread processing machines described above, comprising the following steps:

[0017] S1. Move the workpiece to the surface of the support assembly, adjust the height of the support assembly so that the workpiece and the three-jaw chuck are on the same horizontal plane, limit the two sides of the workpiece through the limit assembly, so that the workpiece is always kept on the same axis as the three-jaw chuck, push the workpiece on the surface of the support assembly to the inner wall of the three-jaw chuck for clamping and fixing, and when the clamping is completed, push the ejector pin to the tail end of the workpiece to fix it so that the workpiece remains stable during rotation;

[0018] S2, control the moving tool holder to the end of the workpiece, control the piston rod at the end of the first cylinder to drive the sliding seats to move away from each other, so that the limit assembly is away from the workpiece surface. When the processing is completed, the piston rod at the end of the first cylinder drives the sliding seats to move relative to each other, so that the limit assembly fits the workpiece surface, and the workpiece drives the limit assembly to rotate. The cutting assemblies provided on one side of the limit assembly move relative to each other, and the waste material coiled near the tool during the thread processing is cut, so that the waste material forms irregular strips and falls into the waste box;

[0019] S3. The workpiece clamped on the inner wall of the three-jaw chuck is unloaded, and the processed workpiece falls on the surface of the support component for support. The support component buffers the workpiece to avoid hard contact between the threads on the surface of the workpiece and the support component.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The stainless steel lead screw thread processing machine can adjust the height of the workpiece placed on the surface of the support roller by controlling the length of the piston rod at the end of the second cylinder, so that the workpiece placed on the surface of the support roller and the three-jaw chuck are in the same horizontal plane, which is convenient for loading and unloading the workpiece, thereby improving the processing efficiency. When the workpiece is placed on the surface of the support assembly for support, the workpiece is squeezed against the limiting roller by gravity, and the limiting roller is automatically limited on both sides of the workpiece by the force of the first elastic member, thereby forming a triangular stable structure between the limiting roller and the support assembly, so that the workpiece and the three-jaw chuck are on the same axis, so that the workpiece maintains stability.

[0022] 2. The stainless steel lead screw thread processing machine drives the sliding seat to move horizontally through the piston rod at the end of the first cylinder, so that the limiting roller is closely fitted with the side wall of the workpiece, and the rotation of the workpiece drives the limiting roller to rotate, so that the main gear provided at the end of the limiting roller drives the driven gear to rotate, and the half gear provided at the end of the driven gear meshes with the teeth of the tooth frame, so that the tooth frame moves horizontally, so that the mobile cutter provided at the end of the tooth frame moves relatively, so that the mobile cutters squeeze each other, destroy the waste material coiled near the workpiece, and make the waste material fall in the form of irregular strips, thereby reducing the harm to personnel when cleaning the waste material and improving the safety of processing operations.

[0023] 3. When the workpiece is unloaded and falls on the surface of the support roller, the support roller squeezes the slide bar under the action of gravity, and the slide bar slides on the inner wall of the slide column. During the sliding process of the slide bar, the second elastic member is squeezed, thereby buffering the impact of the workpiece on the surface of the support roller, avoiding hard contact between the workpiece and the surface of the support roller, and thus improving the service life of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Schematic diagram of point A;

[0026] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the cutting assembly of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0030] Figure 7 It is a schematic diagram of the support assembly structure of the present invention.

[0031] The meaning of each number in the figure is:

[0032] 100, machine body; 101, three-jaw chuck; 102, movable tool holder; 103, ejector pin; 104, connecting plate; 105, first cylinder; 106, sliding seat; 107, waste box;

[0033] 200, limit assembly; 201, base; 202, rotating rod; 203, first elastic member; 204, limit roller; 205, main gear;

[0034] 300, cutting assembly; 301, supporting plate; 302, driven gear; 303, tooth pattern frame; 304, movable cutter;

[0035] 400, support assembly; 401, second cylinder; 402, frame plate; 403, slide column; 404, slide rod; 405, second elastic member; 406, support roller. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] One of the purposes of the present invention is to Figure 1-Figure 7 As shown, a stainless steel screw thread processing machine is provided, including a machine body 100 and a three-jaw chuck 101, a thimble 103 is provided on the side away from the three-jaw chuck 101, and the thimble 103 is used to fix the workpiece clamped on the inner wall of the three-jaw chuck 101, a movable tool holder 102 is provided between the three-jaw chuck 101 and the thimble 103, and the movable tool holder 102 moves on the surface of the machine body 100, and a waste box 107 is provided at the bottom of the machine body 100. The movable tool holder 102 is used to perform thread turning on the workpiece clamped on the inner wall of the three-jaw chuck 101, and connecting plates 104 are provided at both ends of the movable tool holder 102. The surface of the connecting plate 104 A symmetrical sliding seat 106 is provided for sliding, and a limit assembly 200 is provided on the surface of the sliding seat 106. The limit assembly 200 is in contact with the surface of the workpiece, and a support assembly 400 is provided between the limit assemblies 200. The support assembly 400 is used to support the workpiece. The limit assembly 200 forms a triangular stable structure for the workpiece placed on the surface of the support assembly 400. A cutting assembly 300 is provided on one side of the limit assembly 200. The limit assembly 200 drives the cutting assembly 300 to move relative to each other. The cutting assembly 300 cuts off the waste formed by turning the movable tool holder 102, so that the waste falls automatically due to gravity.

[0038] The improvement of this embodiment lies in that the piston rod at the end of the first cylinder 105 drives the sliding seat 106 to move horizontally, so that the limiting roller 204 is closely fitted with the side wall of the workpiece, and the rotation of the workpiece drives the limiting roller 204 to rotate, so that the main gear 205 provided at the end of the limiting roller 204 drives the driven gear 302 to rotate, and the half gear provided at the end of the driven gear 302 is meshed with the teeth of the toothed frame 303, so that the toothed frame 303 moves horizontally, so that the mobile cutter 304 provided at the end of the toothed frame 303 moves relatively, so that the mobile cutters 304 squeeze each other, destroy the waste material coiled near the workpiece, and make the waste material fall in the form of irregular strips, thereby reducing the harm to personnel when cleaning the waste material and improving the safety of processing operations.

[0039] When clamping the workpiece, due to the long length of the workpiece, it is not easy to align the end of the workpiece with the three-jaw chuck 101 for clamping, which affects the processing efficiency. Therefore, the limiting component 200 includes a base 201 arranged on the surface of the sliding seat 106, and a support rod is arranged inside the base 201. A rotating rod 202 is rotatably arranged on the surface of the support rod, and a limiting roller 204 is arranged on the top of the rotating rod 202. The limiting roller 204 fits the surface of the workpiece, and the limiting roller 204 is driven to rotate by friction when the workpiece rotates. A main gear 205 is arranged at the end of the limiting roller 204. By placing the workpiece on the surface of the supporting component 400 for support, the workpiece is squeezed against the limiting roller 204 by gravity, and the limiting roller 204 is automatically limited on both sides of the workpiece by the force of the first elastic member 203, thereby forming a triangular stable structure between the limiting roller 204 and the supporting component 400, so that the workpiece and the three-jaw chuck 101 are on the same axis, so that the workpiece maintains stability, and can be quickly clamped and fixed, thereby improving processing efficiency.

[0040] When the thread processing is completed, the waste generated during turning is coiled near the workpiece. Since the cross-section of the waste generated by the thread processing is triangular, it is easy to cause injury to the operator when cleaning the waste. At the same time, the surface temperature of the waste is high during processing, which is easy to cause burns to the operator. Therefore, a first elastic member 203 is provided on the surface of the support rod, and the two ends of the first elastic member 203 are respectively connected to the rotating rod 202 and the inner wall of the base 201. In the natural state, the rotating rod 202 is subjected to the force of the first elastic member 203 and forms an angle of 75° with the horizontal plane. When the processing is completed, the rotating rod 202 is subjected to the force of the first elastic member 203. The first elastic member 203 acts to drive the limiting roller 204 to fit closely to the surface of the workpiece, and the motor is started to drive the three-jaw chuck 101 to rotate, so that the workpiece clamped on the inner wall of the three-jaw chuck 101 rotates coaxially with the three-jaw chuck 101. When the workpiece rotates, the limiting roller 204 is driven to rotate through friction, thereby driving the main gear 205 provided at the end of the limiting roller 204 to rotate, so that the cutting assembly 300 provided at the end of the main gear 205 can reciprocate relatively, so that the cutting assembly 300 can cut the waste material coiled near the workpiece, so that the waste material breaks into irregular strips and falls off.

[0041] When the workpiece is threaded, the cross-section of the waste material is triangular. When the operator cleans the waste material, it is easy to cause personal injury to the operator. Therefore, the cutting assembly 300 includes a support plate 301 arranged on one side of the limiting roller 204. The support plate 301 is slidably provided with a toothed frame 303 on the side away from the limiting roller 204. A driven gear 302 is provided at the end of the support plate 301. The driven gear 302 meshes and rotates with the main gear 205. A half gear is provided at the end of the driven gear 302. The half gear meshes with the teeth inside the toothed frame 303. A movable cutter 304 is provided at the end of the toothed frame 303. When the processing is completed, the movable cutter 304 is moved by the movable cutter at the end of the first cylinder 105. The plug rod drives the sliding seat 106 to move horizontally, so that the limiting roller 204 is closely fitted with the side wall of the workpiece. The rotation of the workpiece drives the limiting roller 204 to rotate, so that the main gear 205 provided at the end of the limiting roller 204 drives the driven gear 302 to rotate, and the half gear provided at the end of the driven gear 302 is meshed with the teeth of the toothed frame 303, so that the toothed frame 303 moves horizontally, so that the mobile cutter 304 provided at the end of the toothed frame 303 moves relatively, so that the mobile cutters 304 squeeze each other, destroy the waste material coiled near the workpiece, and make the waste material fall in irregular strips, thereby reducing the harm to personnel when cleaning the waste material and improving the safety of processing operations.

[0042] Considering that when the mobile cutter 304 cuts the workpiece, in order to increase the cutting force on the waste and make the waste quickly form multiple irregular strips for automatic collection, the mobile cutters 304 are vertically arranged to cut off the waste curled into a ball between them when the mobile cutters 304 move relatively. When the vertically arranged mobile cutters 304 move relatively, the contact area between the ends of the mobile cutters 304 is small, and a larger extrusion force is generated when the waste near the workpiece is squeezed, thereby realizing a quick cutting operation, saving processing time, and improving the efficiency of screw thread processing.

[0043] Taking into account that during the workpiece processing, when the movable tool holder 102 moves to perform thread turning on the workpiece, the limit assembly 200 is easily attached to the workpiece surface, which may cause the thread groove to be damaged by the extrusion force after cutting, affecting the processing quality of the workpiece. Therefore, symmetrical first cylinders 105 are provided on both sides of the connecting plate 104. The piston rod at the end of the first cylinder 105 penetrates the connecting plate 104 and the end is connected to the side wall of the sliding seat 106. During processing, the sliding seat 106 is slid away from the workpiece surface by controlling the piston rod at the end of the first cylinder 105, thereby protecting the processed thread groove and ensuring the processing quality of the workpiece.

[0044] When processing the surface of the workpiece, due to the heavy weight of the workpiece, in order to prevent the workpiece from falling and causing deformation, which would affect the processing quality of the screw rod, the support assembly 400 includes a second cylinder 401 arranged between the bases 201, and a piston rod at the end of the second cylinder 401 is provided with a frame plate 402, and a support roller 406 is provided on the surface of the frame plate 402. The support roller 406 is used to support the workpiece, and the frame plate 402 is driven to move in a vertical direction by the piston rod at the end of the second cylinder 401. The support roller 406 provided on the surface of the frame plate 402 provides auxiliary support for the workpiece to prevent the workpiece from falling and causing deformation during the clamping process, which would affect the processing quality of the screw rod. At the same time, by controlling the length of the piston rod at the end of the second cylinder 401, the height of the workpiece placed on the surface of the support roller 406 can be adjusted, so that the workpiece placed on the surface of the support roller 406 is in the same horizontal plane as the three-jaw chuck 101, which is convenient for loading and unloading the workpiece, thereby improving the processing efficiency.

[0045] When the workpiece is unloaded, due to its heavy weight, when the workpiece falls onto the surface of the support roller 406 for auxiliary support, hard contact between the workpiece and the support roller 406 may easily cause deformation of the processed thread and affect the service life of the processed workpiece. Therefore, a sliding column 403 is provided between the frame plate 402 and the support roller 406, and a sliding rod 404 is slidingly provided on the inner wall of the sliding column 403. A second elastic member 405 is provided between the sliding column 403 and the sliding rod 404. When the workpiece is unloaded and falls on the surface of the support roller 406, the support roller 406 is squeezed by the sliding rod 404 under the action of gravity, and the sliding rod 404 slides on the inner wall of the sliding column 403. During the sliding process of the sliding rod 404, the second elastic member 405 is squeezed, thereby buffering the impact of the workpiece on the surface of the support roller 406, avoiding hard contact between the workpiece and the surface of the support roller 406, and thus improving the service life of the processed workpiece.

[0046] The second object of the present invention is to provide a stainless steel screw thread processing machine processing method, including any one of the above stainless steel screw thread processing machines, comprising the following steps:

[0047] S1, move the workpiece to the surface of the support assembly 400, adjust the height of the support assembly 400 so that the workpiece and the three-jaw chuck 101 are in the same horizontal plane, limit the two sides of the workpiece by the limit assembly 200, so that the workpiece is always kept on the same axis as the three-jaw chuck 101, push the workpiece on the surface of the support assembly 400 to the inner wall of the three-jaw chuck 101 for clamping and fixing, and when the clamping is completed, push the ejector pin 103 to the tail end of the workpiece to fix it, so that the workpiece remains stable during rotation;

[0048] S2, control the movable tool holder 102 to the end of the workpiece, control the piston rod at the end of the first cylinder 105 to drive the sliding seat 106 to move away from each other, so that the limit assembly 200 is away from the workpiece surface. When the processing is completed, the piston rod at the end of the first cylinder 105 drives the sliding seat 106 to move relative to each other, so that the limit assembly 200 fits the workpiece surface, and the workpiece drives the limit assembly 200 to rotate, and the cutting assembly 300 provided on one side of the limit assembly 200 moves relative to each other, and the waste material coiled around the tool during thread processing is cut, so that the waste material forms irregular strips and falls into the waste box 107;

[0049] S3. The workpiece clamped on the inner wall of the three-jaw chuck 101 is unloaded, and the processed workpiece falls on the surface of the support assembly 400 for support. The support assembly 400 buffers the workpiece to prevent the threads on the surface of the workpiece from hard contact with the support assembly 400.

[0050] When in use, the workpiece is placed on the surface of the second elastic member 405, and the workpiece is supported by the second elastic member 405. The piston rod at the end of the second cylinder 401 drives the frame plate 402 to move in the vertical direction. The support roller 406 provided on the surface of the frame plate 402 provides auxiliary support for the workpiece to prevent the workpiece from falling and causing deformation during the clamping process, thereby affecting the processing quality of the screw rod. At the same time, by controlling the length of the piston rod at the end of the second cylinder 401, the height of the workpiece placed on the surface of the support roller 406 can be adjusted so that the workpiece placed on the support roller 406 can be The workpiece on the surface of the roller 406 is in the same horizontal plane as the three-jaw chuck 101, which is convenient for loading and unloading the workpiece, thereby improving the processing efficiency. When the workpiece is placed on the surface of the support assembly 400 for support, the workpiece is squeezed against the limiting roller 204 by gravity, and the limiting roller 204 is automatically limited on both sides of the workpiece by the force of the first elastic member 203, so that a triangular stable structure is formed between the limiting roller 204 and the support assembly 400, so that the workpiece and the three-jaw chuck 101 are on the same axis, so that the workpiece maintains stability and can be quickly clamped and fixed;

[0051] When the processing is completed, the piston rod at the end of the first cylinder 105 drives the sliding seat 106 to move horizontally, so that the limiting roller 204 is closely attached to the side wall of the workpiece, and the rotation of the workpiece drives the limiting roller 204 to rotate, so that the main gear 205 provided at the end of the limiting roller 204 drives the driven gear 302 to rotate, and the half gear provided at the end of the driven gear 302 meshes with the teeth of the toothed frame 303, so that the toothed frame 303 moves horizontally, so that the mobile cutter 304 provided at the end of the toothed frame 303 moves relatively, so that the mobile cutters 304 squeeze each other, destroy the waste materials coiled near the workpiece, and make the waste materials fall in the form of irregular strips, thereby reducing the harm to personnel when cleaning the waste materials and improving the safety of the processing operation;

[0052] When the workpiece is unloaded after processing is completed, when the workpiece falls on the surface of the support roller 406, the support roller 406 is squeezed by gravity to squeeze the slide bar 404, and the slide bar 404 slides on the inner wall of the slide column 403. During the sliding process of the slide bar 404, the second elastic member 405 is squeezed, thereby cushioning the impact of the workpiece on the surface of the support roller 406, avoiding hard contact between the workpiece and the surface of the support roller 406, and thus increasing the service life of the processed workpiece.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A stainless steel screw thread processing machine, characterized in that: The invention comprises a machine body (100) and a three-jaw chuck (101), a thimble (103) being provided on a side away from the three-jaw chuck (101), the thimble (103) being used to fix a workpiece clamped on the inner wall of the three-jaw chuck (101), a movable tool holder (102) being provided between the three-jaw chuck (101) and the thimble (103), the movable tool holder (102) being movable on the surface of the machine body (100), a waste box (107) being provided at the bottom of the machine body (100), the movable tool holder (102) being used to perform thread turning on the workpiece clamped on the inner wall of the three-jaw chuck (101), connecting plates (104) being provided at both ends of the movable tool holder (102), a symmetrical sliding seat (106) being slidably provided on the surface of the connecting plate (104), and a limit assembly (200) being provided on the surface of each sliding seat (106); The limiting assembly (200) is in contact with the surface of the workpiece. A support assembly (400) is provided between the limiting assemblies (200). The limiting assembly (200) comprises a base (201) provided on the surface of the sliding seat (106). A support rod is provided inside the base (201). A rotating rod (202) is rotatably provided on the surface of the support rod. A limiting roller (204) is provided on the top of the rotating rod (202). The limiting roller (204) is in contact with the surface of the workpiece. When the workpiece rotates, the limiting roller (204) is driven to rotate by friction. A main gear (205) is provided at the end of the limiting roller (204). A first elastic member (203) is provided on the surface of the support rod. Two ends of the first elastic member (203) are respectively connected to the rotating rod (202) and the inner wall of the base (201). In a natural state, the rotating rod (202) is subjected to the force of the first elastic member (203) and forms an angle of 75° with the horizontal plane. The support assembly (400) is used to support the workpiece. The limiting assembly (200) forms a triangular stable structure for a workpiece placed on the surface of the supporting assembly (400). A cutting assembly (300) is provided on one side of the limiting assembly (200). The limiting assembly (200) drives the cutting assembly (300) to move relative to each other. The cutting assembly (300) cuts off waste material formed by turning the movable tool holder (102), so that the waste material automatically falls due to gravity. The cutting assembly (300) includes a limiting roller (204) provided on the limiting roller (204). A support plate (301) is provided on one side, and a toothed frame (303) is provided on the side of the support plate (301) that is away from the limiting roller (204) for sliding. A driven gear (302) is provided at the end of the support plate (301). The driven gear (302) meshes and rotates with the main gear (205). A half gear is provided at the end of the driven gear (302). The half gear meshes with the teeth inside the toothed frame (303). A movable cutter (304) is provided at the end of the toothed frame (303).

2. The stainless steel screw thread processing machine according to claim 1, characterized in that: The movable cutters (304) are arranged vertically to each other, and when the movable cutters (304) move relative to each other, they cut off the waste materials curled into a ball between them.

3. The stainless steel screw thread processing machine according to claim 2, characterized in that: Symmetrical first cylinders (105) are provided on both sides of the connecting plate (104); a piston rod at the end of the first cylinder (105) penetrates the connecting plate (104) and the end is connected to the side wall of the sliding seat (106); the sliding seat (106) slides on the surface of the connecting plate (104) by controlling the piston rod at the end of the first cylinder (105).

4. The stainless steel screw thread processing machine according to claim 1, characterized in that: The support assembly (400) comprises a second cylinder (401) arranged between the bases (201); a piston rod at the end of the second cylinder (401) is provided with a frame plate (402); a surface of the frame plate (402) is provided with a support roller (406); the support roller (406) is used to support the workpiece.

5. The stainless steel screw thread processing machine according to claim 4, characterized in that: A sliding column (403) is provided between the frame plate (402) and the support roller (406), a sliding rod (404) is slidably provided on the inner wall of the sliding column (403), and a second elastic member (405) is provided between the sliding column (403) and the sliding rod (404).

6. A method for realizing a stainless steel screw thread processing machine, comprising the stainless steel screw thread processing machine according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, moving the workpiece to the surface of the support assembly (400), adjusting the height of the support assembly (400) so that the workpiece and the three-jaw chuck (101) are in the same horizontal plane, limiting the two sides of the workpiece by the limit assembly (200) so that the workpiece is always kept on the same axis as the three-jaw chuck (101), pushing the workpiece on the surface of the support assembly (400) to the inner wall of the three-jaw chuck (101) for clamping and fixing, and when clamping is completed, pushing the ejector pin (103) to the rear end of the workpiece for fixing, so that the workpiece remains stable when rotating; S2, controlling the movable tool holder (102) to the end of the workpiece, controlling the piston rod at the end of the first cylinder (105) to drive the sliding seats (106) to move away from each other, so that the limiting assembly (200) is away from the surface of the workpiece. When the processing is completed, the piston rod at the end of the first cylinder (105) is controlled to drive the sliding seats (106) to move relative to each other, so that the limiting assembly (200) is attached to the surface of the workpiece, and the workpiece drives the limiting assembly (200) to rotate, and the cutting assembly (300) provided on one side of the limiting assembly (200) moves relative to each other, so that the waste material coiled around the tool during the thread processing is cut, so that the waste material forms irregular strips and falls into the waste box (107); S3, unloading the workpiece clamped on the inner wall of the three-jaw chuck (101), and the processed workpiece falls on the surface of the support component (400) for support, and the support component (400) buffers the workpiece to prevent the threads on the surface of the workpiece from hard contact with the support component (400).

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