A cutting device

Abstract

The utility model relates to pipe cutting technical field, especially a cutting device, a cutting device, including sliding transmission subassembly, swing arm cutting assembly, sliding module and frame, sliding transmission subassembly with one end of frame rotatory connection, swing arm cutting assembly with the other end of frame rotatory connection, sliding module establishes on swing arm cutting assembly, and sliding module with swing arm cutting assembly rotatory connection, the output of sliding transmission subassembly with sliding module transmission connection, it forms cutting area between sliding transmission subassembly and swing arm cutting assembly, and sliding transmission subassembly is used for driving swing arm cutting assembly to swing to cutting area, in this scheme frame provides stable reference, sliding transmission subassembly drives sliding module, displacement conversion is swing arm cutting assembly power and makes it swing cutting, adapts multi -size pipe, compact structure, maintenance is convenient, guarantees efficient stable operation.

Description

Technical Field

[0001] This utility model relates to the field of pipe cutting technology, and in particular to a cutting device. Background Technology

[0002] In the pipe processing industry, cutting devices are crucial equipment. However, some existing cutting devices have significant shortcomings. On the one hand, regarding pipe specification adaptability, they lack adjustable mechanical structures, limiting their cutting operations to pipes of specific diameters and lengths. When faced with pipes of different sizes, existing cutting devices struggle to meet requirements. For example, for small-diameter thin-walled pipes and large-diameter thick-walled pipes, precise cutting cannot be achieved by adjusting the structure; specialized cutting equipment must be used, limiting the application range of the cutting devices. On the other hand, this limited adaptability makes it difficult to flexibly apply the cutting devices in different processing scenarios. In industries such as construction and machinery manufacturing, which require cutting pipes of various specifications, existing cutting devices cannot effectively meet diverse production needs, leading to low production efficiency and increased equipment procurement and production management costs for enterprises. Therefore, there is an urgent need for a cutting device with an adjustable mechanical structure that can adapt to multiple pipe specifications to solve these problems. Utility Model Content

[0003] The technical problem this invention aims to solve is that existing cutting devices are insufficient to meet requirements. For example, for small-diameter thin-walled pipes and large-diameter thick-walled pipes, precise cutting cannot be achieved by adjusting the structure, and specialized cutting equipment must be replaced, which limits the application range of the cutting device.

[0004] The solution to the technical problem of this utility model is:

[0005] A cutting device includes a sliding transmission assembly, a swing arm cutting assembly, a sliding module, and a frame; the sliding transmission assembly is rotatably connected to one end of the frame; the swing arm cutting assembly is rotatably connected to the other end of the frame; the sliding module is disposed on the swing arm cutting assembly and is rotatably connected to the swing arm cutting assembly; the output end of the sliding transmission assembly is drively connected to the sliding module; a cutting area is formed between the sliding transmission assembly and the swing arm cutting assembly; the sliding transmission assembly is used to drive the swing arm cutting assembly to swing towards the cutting area.

[0006] As a further improvement to the above technical solution, the sliding transmission assembly includes a first transmission part and a lead screw structure; the first transmission part is rotatably connected to one end of the frame; the first transmission part is drivingly connected to the lead screw structure; and the sliding module is drivingly connected to the lead screw structure.

[0007] Furthermore, the sliding module includes a lead screw nut and a nut mounting base; the lead screw nut is disposed on the nut mounting base and is connected to the lead screw structure in a transmission manner; the nut mounting base is rotatably connected to the swing arm cutting assembly.

[0008] Furthermore, the first transmission unit includes a motor mounting base, a motor, a driving synchronous pulley, and a driven synchronous pulley; the motor mounting base is rotatably connected to the frame; the motor is mounted on the motor mounting base, the driving synchronous pulley is mounted on the output end of the motor, the driven synchronous pulley is mounted on one end of the lead screw structure, and the driving synchronous pulley and the driven synchronous pulley are connected in a transmission manner.

[0009] Furthermore, the swing arm cutting assembly includes a cutting module and a swinging part; the cutting module is disposed on the swinging part, the sliding module is rotatably connected to the swinging part, the swinging part is rotatably connected to the other end of the frame, and the cutting area is disposed between the swinging part and the motor mounting base.

[0010] Furthermore, the cutting module includes a second transmission unit and a cutting saw blade; the second transmission unit is disposed on the swinging part; the cutting saw blade is connected to the second transmission unit in a transmission connection.

[0011] Furthermore, the lead screw structure includes a lead screw, a bearing housing, and a mounting part. The bearing housing is disposed on the motor mounting base, and a first through hole is provided on the bearing housing. A seventh bearing is disposed on the first through hole. One end of the lead screw passes through the seventh bearing and is connected to the driven synchronous pulley for transmission. The lead screw is connected to the lead screw nut for transmission. The other end of the lead screw is rotatably connected to the mounting part, and the mounting part is disposed on the frame.

[0012] Furthermore, the bearing housing has multiple first threaded through holes; the cutting device also includes multiple locking bolts; the motor mounting base has multiple second threaded through holes; the multiple locking bolts pass through the multiple first threaded through holes and are threadedly connected to the multiple second threaded through holes respectively.

[0013] Furthermore, the mounting part includes a first mounting plate and an eighth bearing. The first mounting plate has a second through hole, and the eighth bearing is disposed on the second through hole. The eighth bearing is rotatably connected to the lead screw.

[0014] Furthermore, the cutting device also includes a dust cover, one end of which covers the motor mounting base, and the other end of which covers the mounting portion.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a stable installation benchmark through the frame, ensuring the stable installation of each component; after the sliding module is driven by the sliding transmission component to generate displacement, the displacement is converted into the swinging power of the swing arm cutting component, thereby guiding the swing arm cutting component to swing towards the cutting area, realizing efficient cutting of pipes, adapting to the cutting needs of pipes of different sizes, enhancing the versatility and applicability of the device, with a compact and reasonable structure, saving space and facilitating maintenance, ensuring continuous and stable cutting, helping to improve cutting efficiency and operational reliability, and providing strong support for high-quality and diversified cutting operations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a cutting device according to this utility model;

[0018] Figure 2 This is a schematic diagram of the sliding transmission assembly and the swing arm cutting assembly of a cutting device according to this utility model.

[0019] Reference numerals in the attached drawings: 1-Sliding transmission assembly; 11-First transmission part; 111-Motor mounting base; 112-Motor; 113-Driving synchronous pulley; 114-Driven synchronous pulley; 12-Screw structure; 121-Screw; 122-Bearing seat; 123-Mounting part; 1231-First mounting plate; 1232-Eighth bearing; 2-Swing arm cutting assembly; 21-Cutting module; 22-Swing part; 23-Second transmission part; 24-Cutting saw blade; 3-Sliding module; 31-Nut mounting base; 4-Dust cover. Detailed Implementation

[0020] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0021] Reference Figures 1-2 A cutting device includes a sliding transmission assembly 1, a rear shaft, a swing arm cutting assembly 2, a front shaft assembly, a connecting shaft, a sliding module 3, and a frame. The rear shaft is located at one end of the frame. The sliding transmission assembly 1 is rotatably connected to the rear shaft. The front shaft assembly is located at the other end of the frame, and the swing arm cutting assembly 2 is rotatably connected to the front shaft assembly. The rear shaft and the front shaft assembly are respectively mounted on the frame and serve as rotational support points for the sliding transmission assembly 1 and the swing arm cutting assembly 2. During the cutting operation, when the front shaft assembly swings, the rear shaft needs to swing synchronously at a corresponding angle to maintain the stability of the cutting operation. This design allows the device to balance the mechanical relationship through the coordinated swinging of the front and rear shafts during dynamic cutting. The connecting shaft is located on the swing arm cutting assembly 2, and the sliding module 3... Block 3 is rotatably connected to the connecting shaft, allowing the sliding module 3 to rotate relative to the swing arm cutting assembly 2. This coordinates the movement relationship between the swing arm cutting assembly 2, the sliding transmission assembly 1, and the sliding module 3. The output end of the sliding transmission assembly 1 is connected to the sliding module 3. A cutting area is formed between the sliding transmission assembly 1 and the swing arm cutting assembly 2. The sliding transmission assembly 1 is used to drive the swing arm cutting assembly 2 to swing towards the cutting area. When the sliding transmission assembly 1 is in operation, its output end drives the sliding module 3 to generate displacement through the transmission connection. At the same time, the displacement of the sliding module 3 itself is converted into power transmission to the swing arm cutting assembly 2, thereby guiding the swing arm cutting assembly 2 to swing towards the cutting area, thus realizing the cutting movement of the swing arm cutting assembly 2, completing the cutting operation of the workpiece, and meeting the cutting requirements of pipes of different sizes.

[0022] Working principle: When the machine is working, the sliding transmission assembly 1 uses its rear shaft as a fulcrum and drives the sliding module 3 to generate displacement along the cutting area through the output end; the sliding module 3 then converts this displacement into a traction force on the swing arm cutting assembly 2, causing the swing arm cutting assembly 2 to rotate around the front shaft assembly at the front end and swing towards the cutting area. At the same time, the rear shaft swings in the opposite direction to the front shaft assembly to balance the force system; the swing arm cutting assembly 2 thus completes the swing cutting action, realizing continuous and stable cutting of pipes of different sizes;

[0023] In this embodiment, the frame provides a stable installation reference, ensuring the stable installation of each component. After the sliding module 3 is driven by the sliding transmission component 1 to generate displacement, the displacement is converted into the swinging power of the swing arm cutting component 2, thereby guiding the swing arm cutting component 2 to swing towards the cutting area, realizing efficient cutting of pipes. It can adapt to the cutting needs of pipes of different sizes, enhancing the versatility and applicability of the device. The structure is compact and reasonable, saving space and facilitating maintenance. It ensures continuous and stable cutting, helps to improve cutting efficiency and operational reliability, and provides strong support for high-quality and diversified cutting operations.

[0024] The sliding transmission assembly 1 includes a first transmission part 11 and a lead screw structure 12; the first transmission part 11 is rotatably connected to the rear shaft; the first transmission part 11 is drive-connected to the lead screw structure 12; the sliding module 3 is drive-connected to the lead screw structure 12.

[0025] In this embodiment, the first transmission unit 11 drives the lead screw structure 12 to rotate, and the sliding module 3 on the lead screw structure 12 can slide along the axis of the lead screw 121, providing sliding power and guidance for the sliding module 3. The sliding module 3 then transmits this sliding to the swing arm cutting assembly 2, etc., to realize the control of the movement of the swing arm cutting assembly 2. It is an important link connecting the sliding transmission assembly 1 and the movement transmission of the swing arm cutting assembly 2. The lead screw structure 12 drives the sliding module 3 to slide, and the sliding module 3 in turn drives the swing arm cutting assembly 2 to move along a specific trajectory to complete the cutting operation. When the front shaft assembly and the rear shaft of the device swing together to maintain stability, the first transmission unit 11 also adapts and adjusts its movement state accordingly.

[0026] The sliding module 3 includes a lead screw nut and a nut mounting base 31. The lead screw nut, as the direct connection component between the sliding module 3 and the lead screw structure 12, is mounted on the nut mounting base 31 and forms a helical transmission engagement with the lead screw structure 12. It can slide along the axial direction of the lead screw structure 12, converting the rotational motion of the lead screw structure 12 into its own linear motion. It is the core component for transmitting power and motion. The lead screw nut is located on the nut mounting base 31, providing a fixed installation reference for the lead screw nut. The lead screw nut is connected to the lead screw structure 12 in a transmission connection. The nut mounting base 31 has a first bearing and a second bearing on its two sides, respectively. One end of the connecting shaft is rotatably connected to the first bearing, and the other end of the connecting shaft is rotatably connected to the second bearing, allowing the connecting shaft to rotate flexibly relative to the nut mounting base 31, reducing motion interference between the connecting shaft and the sliding module 3, and ensuring the smoothness of the swing arm cutting assembly 2 during swing. The first bearing and the second bearing serve as rotational support points for the connecting shaft, integrating the motion relationship between the lead screw nut and the connecting shaft, and ensuring coordinated motion of each component.

[0027] In this embodiment, the lead screw nut and the lead screw structure 12 form a helical transmission, which converts the rotational motion into the linear motion of the sliding module 3, providing stable power transmission for the swing arm cutting assembly 2, ensuring accurate motion trajectory, and improving cutting accuracy. The nut mounting base 31 provides a stable mounting reference for the lead screw nut. The first bearing and the second bearing on both sides of the nut are rotatably connected to the connecting shaft, which can reduce motion interference between components, reduce component wear, ensure smooth swing of the swing arm cutting assembly 2, extend the life of the device, ensure coordinated operation of each component, adapt to the dynamic coordinated motion of the device, make cutting more stable and reliable, and have a compact structure that is easy to maintain, effectively meeting the cutting needs of different scenarios.

[0028] The first transmission unit 11 includes a motor mounting base 111, a motor 112, a driving synchronous pulley 113, and a driven synchronous pulley 114. The motor mounting base 111 has a third bearing and a fourth bearing on each side. One end of the rear shaft is rotatably connected to the third bearing, and the other end of the rear shaft is rotatably connected to the fourth bearing. The motor 112 is mounted on the motor mounting base 111. The driving synchronous pulley 113 is located on the output end of the motor 112, and the driven synchronous pulley 114 is located on one end of the lead screw structure 12. The rotational power of the motor 112 is transmitted to the driven synchronous pulley 114, driving the lead screw structure 12 to rotate. This, in turn, drives the sliding module 3 and the swing arm cutting assembly 2 connected to it to adjust their positions along the lead screw structure 12, thereby adapting to the cutting requirements of different sized pipes and ensuring that the cutting operation meets the dimensional requirements of various pipes. The driving synchronous pulley 113 and the driven synchronous pulley 114 are connected in a transmission connection.

[0029] In this embodiment, the third and fourth bearings on both sides of the motor mounting base 111 are rotatably connected to the rear shaft, providing stable support for the rear shaft and accommodating its swing, ensuring uninterrupted power transmission during dynamic adjustments of the device. The motor 112 is driven by the active synchronous pulley 113 and the driven synchronous pulley 114, efficiently transmitting rotational power to the lead screw structure 12, driving the sliding module 3 and the swing arm cutting assembly 2 to adjust their positions along the lead screw 121, adapting to the cutting needs of pipes of different sizes, and ensuring that the operation meets various size requirements. The overall structure is compact, the power transmission is stable and efficient, improving the adaptability and reliability of the cutting device, facilitating maintenance, and providing strong support for the cutting of pipes of diverse sizes.

[0030] The front shaft assembly includes a front shaft, a fifth bearing, and a sixth bearing; the swing arm cutting assembly 2 includes a cutting module 21 and a swing part 22, the swing part 22 including a first swing arm and a second swing arm; the cutting module 21 and the connecting shaft are both located between the first swing arm and the second swing arm, the first swing arm and the second swing arm have a symmetrical structure, forming a rigid frame to ensure the positional stability of the cutting module 21; the fifth bearing is located on the first swing arm, the sixth bearing is located on the second swing arm, one end of the front shaft is rotatably connected to the fifth bearing, and the other end of the front shaft is connected to the fifth bearing. The six bearings are rotatably connected to provide a stable rotational support shaft for the swing arm cutting assembly 2, allowing the entire swing arm cutting assembly 2 to swing flexibly around the front axis, thereby adjusting the cutting angle and position. Driven by the sliding module 3, the swing arm cutting assembly 2 swings with the front axis as the fulcrum. The cutting module 21 moves with the swing part 22 to complete the cutting action. The setting of the fifth and sixth bearings ensures the smoothness of the swing process. At the same time, the symmetrical layout of the swing part 22 makes the cutting module 21 bear force evenly, avoiding trajectory deviation caused by uneven force during cutting. The cutting area is located between the swing part 22 and the motor mounting base 111.

[0031] In this embodiment, the cutting module 21 and the connecting shaft are placed between the first swing arm and the second swing arm to form a rigid frame, ensuring the stability of the cutting module 21. The fifth and sixth bearings are respectively located on the two swing parts 22 and are rotatably connected to the two ends of the front shaft, providing stable rotational support for the swing arm cutting assembly 2 and ensuring its flexible swing around the front shaft to adjust the cutting angle and position. When the sliding module 3 drives the swing arm to swing, the bearing design reduces friction and ensures smooth swing. The symmetrical layout makes the cutting module 21 subjected to balanced force, avoiding trajectory deviation caused by uneven force and improving cutting accuracy. The overall structure enhances cutting stability and flexibility, adapts to the cutting needs of pipes of different sizes, extends the life of the device, and ensures efficient and reliable operation.

[0032] The cutting module 21 includes a second transmission part 23, a second mounting plate, and a cutting saw blade 24; one end of the second mounting plate is disposed on the first swing arm, and the other end of the second mounting plate is disposed on the second swing arm; the second transmission part 23 is disposed on the second mounting plate; the cutting saw blade 24 is connected to the second transmission part 23 in a transmission manner.

[0033] In this embodiment, the second mounting plate provides a stable mounting reference for the second transmission unit 23 and the cutting saw blade 24, ensuring that the position of the cutting components is relatively fixed during the swing of the arm, and avoiding displacement due to vibration or force. The function of the second transmission unit 23 is to convert the input power (such as the power of the motor 112) into the rotational motion of the cutting saw blade 24, and drive the saw blade to rotate at high speed through the transmission structure (such as gears, belts, etc.) to provide power support for the cutting operation. The cutting saw blade 24 rotates under the drive of the transmission unit and achieves cutting through contact with the pipe. Its rotation speed and cutting angle are adjusted with the swing of the arm and the control of the transmission unit to adapt to the cutting needs of pipes of different sizes.

[0034] The lead screw structure 12 includes a lead screw 121, a bearing housing 122, and a mounting part 123. The bearing housing 122 is mounted on the motor mounting base 111, and a first through hole is formed in the bearing housing 122. A seventh bearing is mounted in the first through hole. One end of the lead screw 121 passes through the seventh bearing and is connected to the driven synchronous pulley 114 for transmission. The bearing housing 122 provides stable support for the lead screw 121 and limits the axial position of the lead screw 121 through the first through hole, ensuring the transmission accuracy of the lead screw 121. The lead screw 121 and the... The screw nut is connected to the drive mechanism. When the screw 121 rotates, the screw nut moves linearly along the axis of the screw 121. The screw nut is connected to the sliding module 3, thereby converting the rotational motion of the screw 121 into the linear motion of the sliding module 3, which drives the swing arm cutting assembly 2 to achieve position adjustment. The other end of the screw 121 is rotatably connected to the mounting part 123. The mounting part 123 is located on the frame and can limit the movement stroke of the screw nut by means of the mounting part 123, and prevent the nut from moving excessively by means of physical blocking, thus protecting the safety of the equipment.

[0035] In this embodiment, the bearing seat 122 provides stable support for the lead screw 121 and limits its axial position through the first through hole to ensure transmission accuracy. The lead screw 121 cooperates with the lead screw nut to convert the rotational motion into the linear motion of the sliding module 3, driving the swing arm cutting assembly 2 to adjust its position to meet the cutting requirements of pipes of different sizes. The mounting part 123 is set on the frame and connected to the other end of the lead screw 121, which not only enhances the stability of the lead screw 121, but also limits the stroke of the nut to prevent excessive movement, protect the equipment safety, improve cutting accuracy and operational reliability, and provide strong support for efficient and safe cutting.

[0036] The bearing housing 122 has a plurality of first threaded through holes; the cutting device also includes a plurality of locking bolts; the motor mounting base 111 has a plurality of second threaded through holes; the plurality of locking bolts pass through the plurality of first threaded through holes and are threadedly connected to the plurality of second threaded through holes respectively;

[0037] In this embodiment, the bearing housing 122 and the motor mounting base 111 are tightly connected by multiple first threaded through holes, multiple locking bolts and multiple second threaded through holes. The layout of the multiple first threaded through holes and multiple second threaded through holes is symmetrical, so that the force is more balanced. The second threaded through holes of the motor mounting base 111 provide a stable installation reference for the bearing housing 122, ensuring the stability of the lead screw 121 transmission.

[0038] The mounting part 123 includes a first mounting plate 1231 and an eighth bearing 1232. The first mounting plate 1231 has a second through hole, and the eighth bearing 1232 is disposed on the second through hole. The eighth bearing 1232 is rotatably connected to the lead screw 121.

[0039] In this embodiment, an eighth bearing 1232 is provided on the second through hole of the first mounting plate 1231, which is rotatably connected to the lead screw 121. This provides stable support for the other end of the lead screw 121, reduces friction and vibration during rotation, and ensures smooth transmission. The first mounting plate 1231 also limits the range of motion of the lead screw nut, preventing excessive movement of the lead screw nut and protecting the equipment. This solution enhances the overall stability of the lead screw structure 12, improves transmission accuracy and equipment safety, extends service life, and adapts to the dynamic operation requirements of the cutting device.

[0040] The cutting device also includes a dust cover 4, one end of which is covered on the motor mounting base 111, and the other end of which is covered on the mounting part 123;

[0041] In this embodiment, the dust cover 4 covers the motor mounting base 111 at one end and the mounting part 123 at the other end, which can effectively prevent dust, debris and other particles generated during the cutting operation from entering the sliding transmission assembly 1 and the sliding module. This avoids the wear of impurities on components such as the lead screw structure 12 and bearings, reduces the occurrence of failures, ensures smooth transmission of each component, and extends the service life of the device. At the same time, the dust cover 4 can also protect key components such as the motor 112 from contamination, maintain stable equipment performance, and improve the reliability of the cutting device in long-term operation.

[0042] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cutting device, characterized in that, The device includes a sliding transmission assembly, a swing arm cutting assembly, a sliding module, and a frame. The sliding transmission assembly is rotatably connected to one end of the frame. The swing arm cutting assembly is rotatably connected to the other end of the frame. The sliding module is mounted on the swing arm cutting assembly and is rotatably connected to the swing arm cutting assembly. The output end of the sliding transmission assembly is drively connected to the sliding module. A cutting area is formed between the sliding transmission assembly and the swing arm cutting assembly. The sliding transmission assembly is used to drive the swing arm cutting assembly to swing towards the cutting area.

2. The cutting device as described in claim 1, characterized in that, The sliding transmission assembly includes a first transmission part and a lead screw structure; the first transmission part is rotatably connected to one end of the frame; the first transmission part is drivingly connected to the lead screw structure; and the sliding module is drivingly connected to the lead screw structure.

3. The cutting device as described in claim 2, characterized in that, The sliding module includes a lead screw nut and a nut mounting base; the lead screw nut is mounted on the nut mounting base and is connected to the lead screw structure in a transmission manner; the nut mounting base is rotatably connected to the swing arm cutting assembly.

4. A cutting device as described in claim 2, characterized in that, The first transmission unit includes a motor mounting base, a motor, a driving synchronous pulley, and a driven synchronous pulley; the motor mounting base is rotatably connected to the frame; the motor is mounted on the motor mounting base, the driving synchronous pulley is mounted on the output end of the motor, the driven synchronous pulley is mounted on one end of the lead screw structure, and the driving synchronous pulley and the driven synchronous pulley are connected in a transmission manner.

5. A cutting device as described in claim 4, characterized in that, The swing arm cutting assembly includes a cutting module and a swinging part; the cutting module is disposed on the swinging part, the sliding module is rotatably connected to the swinging part, the swinging part is rotatably connected to the other end of the frame, and the cutting area is disposed between the swinging part and the motor mounting base.

6. A cutting device as described in claim 5, characterized in that, The cutting module includes a second transmission unit and a cutting saw blade; the second transmission unit is disposed on the swinging part; the cutting saw blade is connected to the second transmission unit in a transmission manner.

7. A cutting device as described in claim 4, characterized in that, The lead screw structure includes a lead screw, a bearing housing, and a mounting part. The bearing housing is mounted on the motor mounting base and has a first through hole. A seventh bearing is mounted on the first through hole. One end of the lead screw passes through the seventh bearing and is connected to the driven synchronous pulley for transmission. The lead screw is connected to the lead screw nut for transmission. The other end of the lead screw is rotatably connected to the mounting part, which is mounted on the frame.

8. A cutting device as described in claim 7, characterized in that, The bearing housing has multiple first threaded through holes; the cutting device also includes multiple locking bolts; the motor mounting base has multiple second threaded through holes; the multiple locking bolts pass through the multiple first threaded through holes and are threadedly connected to the multiple second threaded through holes respectively.

9. A cutting device as described in claim 7, characterized in that, The mounting part includes a first mounting plate and an eighth bearing. The first mounting plate has a second through hole, and the eighth bearing is disposed on the second through hole. The eighth bearing is rotatably connected to the lead screw.

10. A cutting device as described in claim 7, characterized in that, The cutting device also includes a dust cover, one end of which is placed on the motor mounting base and the other end of which is placed on the mounting part.

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