Thin-wall steel pipe cutting device

Abstract

The utility model relates to a thin-wall steel pipe cutting device, and aims to solve the problems of uneven pipe orifice, low precision and the like caused by a traditional cutting mode. The equipment is composed of a rack component, a cutting component and a die clamping component. The die clamping component clamps the steel pipe through the die clamping air cylinder, and the steel pipe is conveyed to a machining station through the feeding air cylinder. The cutting component comprises a servo motor, a gear set, a fixed cutter shaft and a movable cutter shaft, the servo motor drives the blade to rotate, and the cutter pushing air cylinder controls the blade to be pushed out for cutting. The inclined planes of the circular-truncated-cone-shaped blades on the fixed cutter shaft and the movable cutter shaft face opposite directions, accurate cutting can be achieved, notches are neat and smooth, and the size height is accurate. The machining method comprises the steps of feeding, clamping, feeding, blade rotating, pushing-out cutting and the like. The machining quality and efficiency of the thin-wall steel pipe can be improved, the follow-up machining workload is reduced, strict engineering requirements are met, and wide application prospects are achieved.

Description

Technical Field

[0001] The utility model relates to the field of processing, in particular to a thin-wall steel pipe cutting device. Background Art

[0002] Thin-walled steel pipes, due to their exceptional lightweight and high-strength properties, are widely used in fields such as construction, aviation, and automotive. These pipes are used in a variety of key areas, from building structures to aerospace components and automobile frames. In these applications, the cutting quality of thin-walled steel pipes directly impacts the accuracy of subsequent processing and the overall safety of the project. Therefore, the precision, efficiency, and stability of cutting technology are key technical indicators in the processing of thin-walled steel pipes. Traditional thin-walled steel pipe cutting equipment typically utilizes manual operation or simple mechanical cutting devices. The lack of a high-precision control system in traditional equipment leads to large errors during the cutting process. These errors can affect the flatness of the cut edge, negatively impacting subsequent processing and the quality of the final product. For example, in building structures, the cutting accuracy of thin-walled steel pipes directly impacts the accuracy of welding and assembly, which in turn affects the stability and safety of the structure.

[0003] Patent publication number CN103317182A discloses a thin-walled steel pipe peeling machine. However, this machine still has certain limitations in practical application. The cut pipe ends are uneven, prone to internal flanging and burrs, which seriously affect the appearance quality of the pipe and the convenience of subsequent processing. In addition, the uneven cut edge may also lead to poor sealing when connecting the pipe, affecting its performance. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the deficiencies of the prior art, the purpose of the present utility model is to provide a thin-walled steel pipe cutting device that solves the problems existing in the prior art. The device uses a servo motor to drive the blade to rotate, and cooperates with specially designed fixed knife shafts and movable knife shafts to achieve high-precision cutting of thin-walled steel pipes. Its innovation lies in the combined design of the frustum-shaped blade and the push-knife cylinder, which effectively reduces the impact and vibration on the steel pipe during the cutting process, thereby achieving smooth cutting of thin-walled steel pipes. The automated control system of the equipment coordinates the clamping, feeding and cutting actions to ensure the precise execution of each step, greatly improving processing efficiency and cutting quality. This equipment not only fills the gap in low-cost, high-precision automated thin-walled steel pipe cutting equipment on the existing market, but also provides a more reliable and economical solution for thin-walled steel pipe processing.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A thin-walled steel pipe cutting device comprises a frame assembly, a clamping assembly fixed to the right upper end of the frame assembly, and a cutting assembly disposed on the left side of the clamping assembly. The frame assembly supports and secures the other components, ensuring the stability of the device and the relative positions of the components. The clamping assembly is used to clamp the thin-walled steel pipe. The cutting assembly is used to cut the thin-walled steel pipe.

[0009] The cutting unit is located on the left side of the clamping assembly. This unit includes a mounting bracket, affixed to the left side of which is a servo motor. The servo motor's output shaft is connected to a gear train. The right side of the gear train is connected to a fixed blade shaft and a movable blade shaft. A movable blade shaft is located above the fixed blade shaft, and a pusher cylinder is located on the inner end of the movable blade shaft. The mounting bracket provides a foundation for mounting and supporting the entire cutting unit. The servo motor serves as the power source, driving the output shaft to rotate and transmitting power to the gear train via a transmission connection. The gear train acts as a transmission and speed changer, transferring the servo motor's power to the fixed and movable blade shafts, enabling them to rotate at the appropriate speed and torque. The pusher cylinder drives the movable blade shaft to move the second blade, creating a shearing action with the first blade on the fixed blade shaft, completing the cutting process.

[0010] Preferably, a first blade is provided at the right end portion of the fixed blade shaft, the first blade is in the shape of a truncated cone, and the blade bevel of the first blade faces outward; a second blade is provided at the right end portion of the movable blade shaft, the second blade is in the shape of a truncated cone, and the blade bevel of the second blade faces inward. This design aims to optimize the cutting process through the relative angles and shapes of the blades. The truncated cone shape and bevel orientation of the first blade and the second blade can effectively cooperate to achieve smooth cutting of thin-walled steel pipes, ensuring smooth incisions and reducing burrs. The outer bevel of the fixed blade helps to guide the material inward for cutting, while the inner bevel of the movable blade ensures that the cutting force is evenly distributed, further improving cutting accuracy and quality.

[0011] Preferably, the clamping component includes a slide rail symmetrically arranged at the upper end of the frame component, the upper end of the slide rail is slidably connected to the slide, the upper end of the slide is fixed with a clamp seat, the upper end of the clamp seat is fixed with a lower clamp, the top of the clamp seat is provided with a clamp cylinder, and the output shaft end of the clamp cylinder is fixed with an upper clamp. The slide rail provides a movable track for the slide, so that the slide is slidably connected to the slide rail, carrying the clamp seat and the components thereon, driving the clamp seat and the clamped thin-walled steel pipe to adjust the position. The clamp seat is used to fix the lower clamp and provide an installation position for the clamp cylinder. The lower clamp cooperates with the upper clamp to clamp the thin-walled steel pipe. The clamp cylinder is used to provide power to drive the upper clamp to move up and down, thereby realizing the clamping and loosening operations of the thin-walled steel pipe.

[0012] Preferably, the fixed blade shaft is positioned in the middle of the gear train. The movable blade shaft is positioned above the fixed blade shaft. This layout ensures that the gear train can effectively drive both the fixed and movable blade shafts while maintaining their relative position and rotational accuracy. The central position of the fixed blade shaft provides stable support and precise rotational control, while the placement of the movable blade shaft above it allows for more flexible and precise tool movement during the cutting process. This design not only optimizes the transmission of cutting force and improves cutting stability, but also effectively reduces potential errors during the cutting process, ensuring uniformity and high quality of the cutting result.

[0013] Preferably, the pusher cylinder propels the movable blade shaft horizontally, allowing the second blade to mate with the first blade for cutting. This design makes the cutting process more precise and controllable. The pusher cylinder's horizontal movement ensures the movable blade shaft can be precisely adjusted during the cutting process, allowing the second blade to mate closely with the first blade on the fixed blade shaft, ensuring uniform blade contact and consistent cutting results. This not only improves cutting accuracy but also optimizes cutting quality, reducing potential errors and irregularities during the cutting process.

[0014] Preferably, a clamping cylinder drives the upper clamping die up and down, collaborating with the lower clamping die to clamp the thin-walled steel pipe. This design enables the clamping system to effectively clamp the thin-walled steel pipe, ensuring that the pipe remains in a stable position during the cutting process and preventing material shifting or deformation caused by a loose clamp. The vertical movement of the upper clamping die, in conjunction with the lower clamping die, not only improves clamping accuracy but also enhances cutting stability, ensuring uniformity and improved cutting quality.

[0015] Preferably, a feed cylinder is fixedly provided on the right side of the frame member and is movably connected to the clamping member. The function of the feed cylinder is to movably connect with the clamping member to drive the clamping member and the thin-walled steel pipe clamped therein to move toward the cutting member, thereby delivering the thin-walled steel pipe to the processing station.

[0016] Furthermore, the bevel angles of the first and second blades are controlled within a range of 40°-50°, preferably 45°. This optimized cutting angle reduces cutting resistance, improves cutting accuracy and cut quality, reduces vibration and noise, and adapts to the easily deformed nature of thin-walled steel pipes. This design ensures that the blades gradually penetrate the material, achieving a stable cutting effect, while also improving cutting efficiency and overall equipment performance, meeting the requirements for efficient, stable, and high-quality processing.

[0017] (3) Beneficial effects

[0018] The thin-walled steel pipe processing equipment of the present invention significantly improves the cutting accuracy and processing quality of thin-walled steel pipes through precise blade design and efficient operating mechanism. The setting of the fixed blade shaft and the movable blade shaft in the equipment optimizes the relative movement of the blade, and combined with the bevel orientation of the frustum-shaped blade, ensures the stability of the cutting process and the uniformity of the cutting effect. The coordinated work of the clamping cylinder and the feed cylinder effectively clamps and positions the thin-walled steel pipe, preventing the displacement or deformation of the material during processing. The servo motor drives the blade to rotate, and the push cylinder realizes the precise pushing of the blade, making the cutting action smoother and more efficient. This design not only reduces the vibration and noise during the cutting process, but also improves the processing speed and incision quality, ensuring the neatness and smoothness of the cutting edge. Overall, the equipment and method of this patent provide an efficient and stable thin-walled steel pipe cutting solution that is suitable for high-quality production needs and has significant industrial application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the entire thin-walled steel pipe cutting device of the present application.

[0021] Figure 2 This is a schematic diagram of a clamping die component in a thin-walled steel pipe cutting device of the present application.

[0022] Figure 3 This is a schematic diagram of a cutting component in a thin-walled steel pipe cutting device of the present application.

[0023] Figure 4 This is a cross-sectional view of a cutting component in a thin-walled steel pipe cutting device of the present application.

[0024] Figure 5 This is an enlarged view of point A in a thin-walled steel pipe cutting device of this application.

[0025] In the figure: 1-frame component, 2-mold clamping component, 3-cutting component, 4-feed cylinder, 21-slide rail, 22-slide table, 23-clamp seat, 24-lower mold clamping, 25-mold clamping cylinder, 26-upper mold clamping, 31-mounting frame, 32-servo motor, 33-gear set, 34-fixed knife shaft, 35-movable knife shaft, 36-knife push cylinder, 341-first blade, 351-second blade. DETAILED DESCRIPTION

[0026] The following is a combination of the appended examples of the present invention Figures 1 to 5A clear and complete description of the technical solutions in the embodiments of the present invention is provided. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] A thin-walled steel pipe cutting device includes: a frame component 1, a clamping component 2 is fixed to the right side of the upper end of the frame component 1, a cutting component 3 is provided on the left side of the clamping component 2, and a feed cylinder 4 is fixed to the right side of the frame component 1, and the feed cylinder 4 is movably connected to the clamping component 3. The frame component 1 is the basic structure of the entire thin-walled steel pipe processing equipment, which plays the role of supporting and fixing other components, ensuring the stability of the equipment and the relative position relationship between each component. The clamping component 2 is used to clamp the thin-walled steel pipe to keep it stable during the processing. The clamping component is driven by the clamping cylinder, which clamps and fixes the thin-walled steel pipe to prevent it from moving or shaking during the cutting process, thereby ensuring the accuracy and quality of the cutting. The cutting component 3 is the part used to cut the thin-walled steel pipe. It includes components such as a tool and a drive motor, which can achieve precise cutting of thin-walled steel pipes and make the incision neat and smooth. Feed cylinder 4, flexibly connected to the clamping assembly, drives the clamping assembly and the thin-walled steel tube it holds toward the cutting assembly, delivering the tube to the processing station for cutting. Controlling the motion of the feed cylinder is crucial to ensuring the tube reaches the processing position accurately, impacting both efficiency and precision.

[0028] The clamping component 2 includes a slide rail 21 symmetrically arranged at the upper end of the frame component 1. The upper end of the slide rail 21 is slidably connected to a slide 22. The upper end of the slide 22 is fixed with a clamp seat 23. The upper end of the clamp seat 23 is fixed with a lower clamp 24. A clamp cylinder 25 is arranged on the top of the clamp seat 23. The output shaft end of the clamp cylinder 25 is fixed with an upper clamp 26. The slide rail 21 is symmetrically arranged at the upper end of the frame component 1, providing a moving track for the slide 22, so that the slide 22 can slide stably thereon. The slide 22 is slidably connected to the slide rail 21, carrying the clamp seat 23 and the components thereon, and can move on the slide rail 21, thereby driving the clamp seat 23 and the clamped thin-walled steel pipe to adjust their positions. The clamp seat 23 is used to fix the lower clamp 24 and provide an installation position for the clamp cylinder 25, playing a supporting and connecting role. The lower clamping die 24 and upper clamping die 26 work together to clamp the thin-walled steel pipe, providing support and fixation from below. A clamping cylinder 25 provides power, driving the upper clamping die 26 up and down to clamp and release the thin-walled steel pipe. Under the action of the clamping cylinder 25, the upper clamping die 26 cooperates with the lower clamping die 24 to compress the thin-walled steel pipe from above, ensuring its stability during processing.

[0029] The cutting unit 3 comprises a mounting frame 31. A servo motor 32 is secured to the left side of the mounting frame 31. The output shaft of the servo motor 32 is connected to a gear set 33. The right side of the gear set 33 is connected to a fixed blade shaft 34 and a movable blade shaft 35. The movable blade shaft 34 is mounted on the upper end of the fixed blade shaft 33, and a pusher cylinder 36 is mounted on the inner end of the movable blade shaft 34. The mounting frame 31 provides a mounting and support base for the entire cutting unit, ensuring that all components are stably fixed in their respective positions. The servo motor 32 serves as the power source, driving the output shaft to rotate, which in turn transmits power to the gear set 33 via a transmission connection. The gear set 33 acts as a transmission and speed changer, transmitting the power from the servo motor 32 to the fixed blade shaft 34 and the movable blade shaft 35, enabling them to rotate at the appropriate speed and torque. The fixed blade shaft 34 drives the first blade 341 on its right end to rotate, which cooperates with the second blade 351 on the movable blade shaft 35 to cut thin-walled steel pipes. The movable blade shaft 35, under the action of the pusher cylinder 36, can drive the second blade 351 to move, forming a shearing action with the first blade 341 on the fixed blade shaft 34, completing the cutting process. The pusher cylinder 36 provides thrust to the movable blade shaft 35, controlling its movement, thereby achieving the coordinated cutting of the second blade 351 and the first blade 341.

[0030] The right end of the fixed blade shaft 34 is provided with a first blade 341. The first blade 341 is truncated cone-shaped, with its bevel facing outward. The right end of the movable blade shaft 35 is provided with a second blade 351. The second blade 351 is truncated cone-shaped, with its bevel facing inward. The push cylinder 36 pushes the movable blade shaft 35 horizontally, allowing the second blade 351 to cooperate with the first blade 341 for cutting.

[0031] The first blade 341 and the second blade 351 are both truncated cone-shaped, and the bevels of the blades face oppositely. When cutting, the pusher cylinder 36 pushes the movable blade shaft 35 to move the second blade 351 closer to the first blade 341. Since the bevels of the two blades cooperate with each other, during the cutting process, they can gradually cut into the thin-walled steel pipe, achieving a cutting action similar to a scissor-like action. When the pusher cylinder pushes the movable blade shaft, the bevel of the second blade faces inward and gradually approaches the bevel of the first blade facing outward. This design of truncated cone-shaped blades with bevels facing opposite directions has the following special effects when cutting thin-walled steel pipes:

[0032] 1. Precision Cutting: The beveled surfaces of the two blades work together to gradually cut into the thin-walled steel pipe during the cutting process, achieving an action similar to that of scissors. This cutting method provides a very precise cutting effect, making the cut of thin-walled steel pipe neat and smooth, greatly reducing the occurrence of irregularities such as internal flanging of the pipe mouth.

[0033] 2. Dimensional Accuracy: The precision of the cutting action ensures highly accurate cutting dimensions of thin-walled steel pipes. This is crucial for subsequent processing and joining operations, reducing the additional processing workload caused by incision dimensional errors and improving product quality and consistency.

[0034] 3. Reduced deformation: Compared with other cutting methods, this scissor-style cutting method causes less squeezing and deformation of thin-walled steel pipes. During the cutting process, the bevel of the blade gradually cuts into the steel pipe, which can better distribute the cutting force and reduce damage to the steel pipe, thereby maintaining the original shape and performance of the steel pipe.

[0035] 4. Improve efficiency: Precise cutting results and accurate size control can improve processing efficiency, reduce scrap rate and rework times. At the same time, this cutting method is relatively stable and reliable, which can improve the operating stability and service life of the equipment to a certain extent.

[0036] In summary, the special effect of this combination is that it can achieve precise and efficient cutting of thin-walled steel pipes, ensure the quality of the cut and the accuracy of the size, while reducing the deformation of the steel pipe and improving the overall quality of the product and processing efficiency.

[0037] Furthermore, the blade bevels of the first blade 341 and the second blade 351 are set to 40°-50°, preferably 45°, in order to optimize the cutting effect of thin-walled steel pipes. The main purpose is to improve cutting accuracy and quality through reasonable blade angle design, while reducing the impact on the steel pipe during the cutting process. The following are the specific purposes and functions of this design:

[0038] Reduced cutting resistance: Keeping the blade bevel angle between 40° and 50° effectively reduces cutting resistance. When the bevel angle is optimally set at 45°, cutting force and cutting resistance reach a relative equilibrium, reducing the reaction force on the tool during the cutting process. This not only reduces tool wear and extends tool life, but also minimizes the loss of cutting accuracy caused by tool wear.

[0039] Improved cutting accuracy and cut quality: A bevel angle of 40°-50°, particularly 45°, ensures the blade makes contact with the steel pipe at the appropriate angle during cutting, resulting in a more stable cutting effect. The 45° angle allows the blade to gradually penetrate the material, preventing tearing or deformation caused by excessive cutting speed or excessive contact area. This results in a smoother, neater cut on thin-walled steel pipes, reducing burrs and improving cut quality.

[0040] Reduced vibration and noise: A moderate bevel angle effectively reduces vibration and noise during cutting. Especially at a 45° angle, the direction of the cutting force and the force applied to the blade are more stable, helping to reduce the impact between the blade and the material, thereby lowering vibration and noise levels. This is crucial for improving equipment stability and operational safety, while also enhancing the working environment.

[0041] Adapting to the characteristics of thin-walled materials: Thin-walled steel pipes are characterized by their thinness and easy deformation. By controlling the blade bevel angle to 40°-50°, the blade can better conform to the surface topography of the thin-walled steel pipe during cutting, reducing the impact of deformation on the steel pipe. The preferred 45° angle design can effectively control the contact stress distribution during cutting, avoid material deformation caused by localized stress concentration, and ensure the integrity of the thin-walled steel pipe and the cutting effect.

[0042] Working principle:

[0043] 1. Loading thin-walled steel pipes: Place the thin-walled steel pipes on the loading position of the equipment and prepare to enter the processing flow.

[0044] 2. Clamping the thin-walled steel pipe: The clamping cylinder 25 is activated, and its output shaft pushes the upper clamping die 26 downward, cooperating with the fixed lower clamping die 24 to firmly clamp the thin-walled steel pipe on the clamp base 23. The slide rails 21 and slide table 22 of the clamping die ensure the precise positioning of the clamp, thereby ensuring that the steel pipe does not move or vibrate during the cutting process.

[0045] 3. Feeding thin-walled steel pipe: The feeding cylinder 4 is started, pushing the clamped thin-walled steel pipe to move horizontally, and sending the steel pipe to the cutting station corresponding to the cutting component 3.

[0046] 4. Blade Rotation Preparation: The servo motor 32 starts, transmitting power to the fixed blade shaft 34 and the movable blade shaft 35 through the precision gear set 33, thereby driving the rotation of the first blade 341 and the second blade 351. The bevel of the first blade faces outward, while the bevel of the second blade faces inward. Through the relative rotation of the two, the thin-walled steel pipe is prepared for cutting.

[0047] 5. Cutting: The pusher cylinder 36 is activated, pushing the movable blade shaft 35 horizontally, causing the second blade 351 to approach the first blade 341. When the second blade contacts the first blade and aligns with the cutting surface of the thin-walled steel pipe, the servo motor drives the two blades to rotate, gradually cutting the thin-walled steel pipe. The frustum-shaped design and beveled surfaces of the blades ensure even distribution of cutting force, reducing impact and vibration on the thin-walled steel pipe and ensuring a neat and smooth cut.

[0048] 6. Cutting is completed: After the cutting is completed, the pusher cylinder 36 is retracted, and the movable blade shaft 35 and the second blade 351 return to their initial positions. The servo motor 32 stops driving the blade to rotate, and the cutting operation is completed.

[0049] 7. Release the steel pipe: The clamping cylinder 25 is released, causing the upper clamping die 26 to rise and release the clamping of the thin-walled steel pipe. The cut thin-walled steel pipe can be removed and enter the next processing or treatment step.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin-walled steel pipe cutting device comprising: A frame component (1) is provided, wherein a clamping component (2) is fixed on the right side of the upper end of the frame component (1), and a cutting component (3) is provided on the left side of the clamping component (2); the cutting component (3) comprises a mounting frame (31), a servo motor (32) is fixed on the left side of the mounting frame (31), an output shaft end of the servo motor (32) is connected to a gear set (33) in a transmission manner, a fixed knife shaft (34) and a movable knife shaft (35) are connected to the right side of the gear set (33), and a knife-pushing cylinder (36) is provided at the inner end of the movable knife shaft (35).

2. A thin-walled steel pipe cutting device according to claim 1, characterized in that: The clamping component (2) includes a slide rail (21) symmetrically arranged on the upper end of the frame component (1); the upper end of the slide rail (21) is slidably connected to a slide table (22); the upper end of the slide table (22) is fixed with a clamp seat (23); the upper end of the clamp seat (23) is fixed with a lower clamping mold (24); the top of the clamp seat (23) is provided with a clamping cylinder (25); the output shaft end of the clamping cylinder (25) is fixed with an upper clamping mold (26).

3. The thin-walled steel pipe cutting device according to claim 1, characterized in that: The fixed blade shaft (34) is arranged in the middle of the gear set (33).

4. The thin-walled steel pipe cutting device according to claim 1, characterized in that: The movable knife shaft (35) is arranged at the upper end of the fixed knife shaft (34).

5. The thin-walled steel pipe cutting device according to claim 1, characterized in that: The knife-pushing cylinder (36) can push the movable knife shaft (35) to move in the horizontal direction, so that the second knife blade (351) cooperates with the first knife blade (341) to perform cutting.

6. The thin-walled steel pipe cutting device according to claim 2, characterized in that: The clamping die cylinder (25) can drive the upper clamping die (26) to move up and down, and cooperate with the lower clamping die (24) to clamp the thin-walled steel pipe.

7. The thin-walled steel pipe cutting device according to claim 1, characterized in that: A feed cylinder (4) is fixedly provided on the right side of the frame component (1), and the feed cylinder (4) is movably connected to the clamping component (2).

8. The thin-walled steel pipe cutting device according to claim 1, characterized in that: A first blade (341) is provided at the right end portion of the fixed blade shaft (34), wherein the first blade (341) is in a truncated cone shape, and the blade bevel of the first blade (341) faces outward.

9. The thin-walled steel pipe cutting device according to claim 1, characterized in that: A second blade (351) is provided at the right end portion of the movable blade shaft (35); the second blade (351) is in the shape of a truncated cone, and the blade bevel of the second blade (351) faces inward.

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