Positioning saw cutting machining device for metal guide rail

Abstract

The invention relates to the technical field of mechanical manufacturing and automation, and discloses a metal guide rail positioning and sawing machining device which comprises a machining cabin. The rack is fixedly connected to the interior of the processing cabin; the basic platform is fixedly connected to the top of the rack and used for bearing a metal guide rail; the positioning mechanism is arranged at the top of the basic platform and used for limiting the position of the metal guide rail before machining; the clamping mechanism is arranged at the top of the basic platform and used for clamping and fixing the metal guide rail after positioning; and the cutting mechanism is movably arranged in the processing cabin, and the cutting mechanism comprises a cutting assembly, a horizontal moving assembly and a vertical moving assembly. By arranging the flexible clamp capable of being self-adaptive to the outline of the metal guide rail and the positioning mechanism capable of being adjusted on the linear guide rail in a sliding mode, the rapid remodeling capacity of the device is achieved, the production preparation time is shortened, and the adaptability to diversified machining tasks is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical manufacturing and automation, in particular to a positioning sawing processing device for metal guide rails. BACKGROUND

[0002] Metal guide rails are basic components in modern mechanical equipment, which mainly provide guidance and support for moving parts. With the development of equipment manufacturing industry towards high precision and high automation, from heavy-duty elevator systems, high-speed railways, to precision CNC machine tools, medical equipment and automated warehouse logistics systems, metal guide rails of various cross-sectional shapes and sizes are increasingly widely used. These guide rails must undergo accurate fixed-length sawing process before being finally put into assembly, and the length precision, end face perpendicularity and surface quality of the cutting directly affect the assembly precision and running stability of the entire equipment.

[0003] The existing metal guide rail cutting processing mostly uses general or semi-automatic cutting equipment. However, when facing complex cross-section shaped special-shaped guide rails, the general clamp often has difficulty in providing stable and reliable clamping, which can easily cause the workpiece to vibrate or displace during cutting, thereby causing the processing precision to decrease or even the workpiece surface to be damaged. In order to adapt to different types of guide rails, it is usually necessary to prepare a variety of special clamps, which not only increases the cost, but also makes the process of replacing the clamps cumbersome, resulting in low changeover efficiency.

[0004] In addition, the traditional cutting positioning method mostly relies on manual marking or simple mechanical stop blocks, and the positioning precision depends on manual operation, which is difficult to ensure the consistency of batch processing and limits the production efficiency. At the same time, the open cutting operation environment produces a large amount of metal debris and noise, which poses a safety hazard to the operators and pollutes the working environment. Therefore, developing an automatic cutting device that can adapt to various types of guide rails, achieve accurate positioning and stable clamping, and also consider the safety of operation, is a technical problem to be solved in the field. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a positioning sawing processing device for metal guide rails, which solves the problems of poor adaptability to different types of guide rails, insufficient clamping stability, low positioning precision and low safety in the existing metal guide rail cutting processing.

[0006] To achieve the above purpose, the present application is implemented by the following technical scheme: a positioning sawing processing device for metal guide rails, comprising a processing cabin; a rack fixedly connected inside the processing cabin; a base platform fixedly connected to the top of the rack for carrying metal guide rails; A positioning mechanism is arranged on the top of the base platform and used for position definition of the metal guide rail before processing. A clamping mechanism is arranged on the top of the base platform and includes a vertical clamping assembly and a horizontal clamping assembly. The vertical clamping assembly includes at least one middle support block, which is fixedly connected to the top of the base platform. A second air cylinder is fixedly connected to one side of the middle support block. Another flexible clamp is fixedly connected to the output end of the second air cylinder. A cutting mechanism is movably arranged in the processing cabin. The cutting mechanism includes: A cutting assembly is used for cutting the fixed metal guide rail. A horizontal moving assembly is used for driving the cutting mechanism to move in the horizontal direction. A vertical moving assembly is used for driving the cutting mechanism to move in the vertical direction.

[0007] Preferably, the processing cabin is provided with an inlet and outlet port. A protective door is arranged on the inner side of the inlet and outlet port. The protective door can be automatically opened and closed under the driving of a first electric sliding rail fixed to the processing cabin.

[0008] Preferably, the positioning mechanism includes a linear guide rail fixed to the base platform. An adjusting block is slidably connected to the linear guide rail. An installation block is fixedly connected to the top of the adjusting block. A positioning rod is fixedly connected to the top of the installation block. Positioning plates are fixedly connected to both ends of the linear guide rail.

[0009] Preferably, the horizontal clamping assembly includes at least one end support block, which is fixedly connected to the top of the base platform. A baffle plate is fixedly connected to the top of the end support block. An installation rack is fixedly connected to the outer side of the end support block. A first air cylinder is fixedly connected to the top of the installation rack. One flexible clamp is fixedly connected to the output end of the first air cylinder. The flexible clamp has a flexible clamping surface that can adapt to the contour of the metal guide rail.

[0010] Preferably, a threaded hole is formed in the other side of the middle support block. An extension plate is installed in the threaded hole through screwing.

[0011] Preferably, the horizontal moving assembly includes a second electric sliding rail, which is fixedly connected to the inner side of the processing cabin. An electric sliding block is slidably connected to the second electric sliding rail.

[0012] Preferably, the vertical moving assembly includes a support column, which is fixedly connected to the top of the electric sliding block. A threaded rod is rotatably connected to the inner side of the support column. The threaded rod is driven by a motor fixed to the top of the support column. A lifting block is threadedly connected to the outer side of the threaded rod.

[0013] Preferably, the cutting assembly comprises a driver fixedly connected outside the lifting block, and a saw blade fixedly connected to an output end of the driver.

[0014] Preferably, the saw blade is provided with a protective cover on an outer periphery thereof, and a cooling liquid pipe for spraying cooling liquid during cutting is mounted on the protective cover.

[0015] Preferably, an extension cover for protecting the threaded rod is arranged between the lifting block and the support column.

[0016] The present application provides a positioning sawing device for metal guide rails. 1. The present application can adapt to the contour of the metal guide rail through the flexible clamp, and the positioning mechanism can be adjusted on the linear guide rail, so that the clamping part does not need to be replaced when processing metal guide rails of different shapes or lengths, and only the position of the positioning rod needs to be adjusted, thereby shortening the production preparation time and improving the adaptability of the device to different specifications of guide rails.

[0017] 2. The present application realizes multi-directional clamping of the metal guide rail by combining the horizontal clamping assembly and the vertical clamping assembly. The clamping surface of the flexible clamp can be attached to the surface of the guide rail, increasing the contact area and making the clamping force evenly distributed, preventing the workpiece from moving or vibrating during sawing, and ensuring the accuracy of the cutting position and the quality of the cutting surface.

[0018] 3. The present application realizes the cutting operation in a closed space by setting the processing cabin and the protective door driven by the first electric sliding rail. The protective door is closed during processing, isolating the rotating saw blade and the flying debris, avoiding contact with the operator, and improving the operation safety. At the same time, the extension cover protects the threaded rod in the vertical moving assembly, which can prolong the service life of the component and improve the reliability of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application; Figure 2 is a schematic view of the present application highlighting the inlet and outlet ports; Figure 3 is a schematic view of the protective door of the present application; Figure 4 is a schematic view of the present application highlighting the rack; Figure 5 is a schematic view of the present application highlighting the base platform; Figure 6 is a schematic view of the cutting assembly of the present application; Figure 7 is a schematic view of the horizontal clamping assembly of the present application; Figure 8 is a schematic view of the positioning mechanism of the present application; Figure 9 Fig. 1 is a schematic diagram of a vertical clamping assembly of the present application; Figure 10 Fig. 2 is a schematic diagram of a vertical moving assembly of the present application.

[0020] Wherein, 1, processing cabin; 2, inlet and outlet; 3, protective door; 4, rack; 5, base platform; 6, protective cover; 7, first electric sliding rail; 8, second electric sliding rail; 9, electric sliding block; 10, support column; 11, telescopic cover; 12, driver; 13, motor; 14, cooling liquid pipe; 15, end support block; 16, first air cylinder; 17, flexible clamp; 18, mounting frame; 19, baffle; 20, middle support block; 21, extension plate; 22, second air cylinder; 23, lifting block; 24, linear guide rail; 25, adjusting block; 26, positioning plate; 27, mounting block; 28, positioning rod; 29, threaded hole; 30, saw blade; 31, threaded rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] Embodiment: Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 3 The embodiment of the present application provides a positioning saw cutting processing device of a metal guide rail, which comprises a processing cabin 1, the overall structure of which is integrated in a closed processing cabin 1; the processing device mainly comprises a rack 4 and a base platform 5 for providing stable support, a positioning mechanism for defining the processing position of a workpiece, a clamping mechanism for fixing the workpiece during processing, and a cutting mechanism for performing actual cutting work. The actions of all mechanisms are uniformly and coordinately controlled by a central control system.

[0023] The rack 4 serves as the load-bearing framework of the whole device, the structure of which is composed of heavy industrial square steel welded by carbon dioxide protection welding, and after welding is completed, the whole is subjected to annealing heat treatment to eliminate internal stress and ensure long-term dimensional stability and structural rigidity. The rack 4 is firmly fixed on the bottom cross beam in the processing cabin 1 through the bottom anchor bolt, and the top thereof is provided with a plurality of precisely machined mounting reference surfaces.

[0024] The base platform 5 is a whole casted mihanna cast iron platform or thick steel plate, the bottom surface is fastened and connected with the mounting reference surface on the top of the frame 4 through multiple groups of high-strength bolts, and the flatness and cleanliness of the contact surface are ensured before connection to ensure rigid conduction. The upper surface of the base platform 5 is ground and processed to have high flatness as the reference of the mounting positioning mechanism and the clamping mechanism.

[0025] The processing cabin 1 is composed of a sheet metal framework and inlaid soundproof and protective plate materials to form a closed processing space. A size-appropriate feeding and discharging port 2 is opened on the side of the processing cabin 1 which is convenient for the operator to feed and discharge materials. An aluminum alloy frame and transparent explosion-proof polycarbonate plate are arranged on the inner side of the feeding and discharging port 2 to form a protective door 3. The top or bottom of the protective door 3 is fixed on the sliding block of the first electric sliding rail 7 through a connecting piece. The first electric sliding rail 7 itself is an integrated linear motion module, the rail body of which is fixed on the inner wall of the processing cabin 1, and the inside contains a ball screw transmission mechanism driven by a small servo motor. The central control system drives the protective door 3 to slide horizontally along the rail smoothly by controlling the motor, so as to realize the automatic opening and closing of the feeding and discharging port 2. Travel limit switches are also arranged at both ends of the rail to feed the fully open or fully closed state of the protective door 3 to the control system.

[0026] Please refer to the attached Figure 4 and the attached Figure 8 The positioning mechanism is used to accurately determine the processing reference point of the metal guide rail in the length direction before the metal guide rail is clamped. It includes a high-precision linear guide rail 24, the guide rail body of which is fixed on the upper surface of the base platform 5 through a countersunk screw. The adjusting block 25 serves as the sliding block of the linear guide rail 24, which contains multiple rows of circulating balls inside and can realize smooth movement on the guide rail with low friction. Limiting positioning plates 26 are fixed at both ends of the linear guide rail 24 to prevent the adjusting block 25 from sliding out of the guide rail stroke. The top of the adjusting block 25 is fixedly connected with a mounting block 27 through a bolt. A positioning rod 28 perpendicular to the base platform 5 is fixedly connected on the top of the mounting block 27, and the positioning rod 28 is made of quenched and hardened tool steel. The end face of the positioning rod 28 is finely ground to ensure that the positioning rod 28 is perpendicular to the surface of the base platform 5, thereby ensuring the accuracy of the positioning of the end face of the workpiece. In addition, the adjusting block 25 is provided with a manual locking screw, and when the operator adjusts the position of the positioning rod 28, the locking screw can be loosened first, the adjusting block 25 is pushed along the linear guide rail 24 to the target position, and then the locking screw is tightened to fix the adjusting block 25 in position.

[0027] Please refer to the attached Figure 5 , the attached Figure 7 and the attached Figure 9 The clamping mechanism is arranged on the top of the base platform 5 and includes a horizontal clamping assembly and a vertical clamping assembly. Their actions are driven by the control of the central control system.

[0028] The horizontal clamping assembly includes an end support block 15 fixed on the base platform 5. The top of the end support block 15 is fixedly connected with a baffle 19 as a fixed lateral reference. On the outer side of the end support block 15, a mounting bracket 18 made of thick steel plate welding or integral aluminum block milling is fixedly connected by bolts. A standard double-acting cylinder as a first cylinder 16 is fixed on the top of the mounting bracket 18 through a flange. The output end of the piston rod of the first cylinder 16 is fixedly connected with a flexible clamp 17 through threads. The axis direction of the first cylinder 16 is directly opposite to the baffle 19, and the extension action will drive the flexible clamp 17 to clamp towards the baffle 19, so as to clamp the metal guide rail between them in the horizontal direction.

[0029] The vertical clamping assembly includes a middle support block 20 fixed on the base platform 5. On one side of the middle support block 20, another standard double-acting cylinder as a second cylinder 22 is fixedly installed through an L-shaped support. The installation direction of the cylinder body of the second cylinder 22 is such that the movement direction of the piston rod is perpendicular to the surface of the base platform 5. The output end of the piston rod is also connected with another flexible clamp 17 of the same structure. On the other side of the middle support block 20, a plurality of threaded holes 29 are pre-processed, and an extension plate 21 for increasing the support area of the bottom of the guide rail is threadedly connected with the threaded holes 29 through screws. The extension action of the second cylinder 22 will drive the flexible clamp 17 to press the metal guide rail from top to bottom.

[0030] The flexible clamp 17 is a key executive component for realizing self-adaptive clamping and high-rigidity locking of different types of guide rails. The structure is a hollow clamp body, and an array composed of a plurality of independent positioning pins is precisely arranged in the clamp body. Each positioning pin can freely slide in the axial direction in the precise guide hole of the clamp body.

[0031] The working process of the flexible clamp 17 includes a profiling and fitting stage and a locking stage.

[0032] In the self-adaptive fitting stage, when the cylinder drives the flexible clamp 17 to move towards the metal guide rail, the end faces of the positioning pins at the front end of the array contact the surface of the guide rail. Since the cross section of the guide rail has an irregular profile, each positioning pin will independently move backward along the normal direction according to the specific position of the contact point on the surface of the guide rail, until the end faces of all the pins in contact with the guide rail collectively form a negative curved surface that completely matches the profile of the surface of the guide rail. This process realizes the profiling and fitting of the pin array to the profile of the workpiece.

[0033] In the locking stage, after the profiled fitting is completed, the external pneumatic or hydraulic pressure boosting system injects high-pressure medium into the sealed cavity inside the clamp body. The high-pressure medium pushes the internal locking mechanism to exert radial or axial locking force on all the positioning pins, so that all the pins are fixed in the current position. At this time, the pin array forms a rigid support structure that matches the shape of the workpiece surface, which is used to withstand the cutting force and vibration generated during sawing. To achieve non-destructive clamping of the workpiece, the end of each positioning pin in contact with the workpiece is fixedly connected to a piece of polyurethane microporous cushion. The cushion has a micro-porous structure and a specific elasticity, and under the action of the final clamping force applied in the locking stage, the cushion will be slightly compressed, converting the nearly point contact force into a small area of surface contact. This design controls the contact pressure on the surface of the metal guide rail to a very low level, effectively avoiding the formation of indentations, scratches or causing local deformation of thin-walled structures on the workpiece surface, ensuring the clamping force of the tool and the surface integrity of the workpiece.

[0034] Please refer to the attached Figure 4 , attached Figure 6 and attached Figure 10 , the cutting mechanism is a composite motion unit integrating horizontal, vertical two-dimensional motion and rotary cutting functions.

[0035] The horizontal moving assembly is a second electric slide rail 8 of heavy load type and high precision. The electric slide rail is an integrated servo linear module, the base of which is fixedly installed on the inner wall of the rear part of the processing cabin 1. The module contains a precision ground ball screw and two parallel heavy load linear guides inside. A high-power AC servo motor is connected to one end of the ball screw through a coupling. All subsequent components of the cutting mechanism are installed on the sliding table, i.e. the electric slide block 9, of the electric slide rail. The central control system can accurately control the moving position, speed and acceleration of the electric slide block 9 in the horizontal direction by sending pulse commands to the servo driver.

[0036] The vertical moving assembly is installed on the electric slide block 9. It includes a support column 10 made of thick steel plate with high bending and torsional rigidity. The bottom of the support column 10 is fixed to the upper surface of the electric slide block 9 through a flange and high-strength bolts. In the hollow slot side of the support column 10, a ball screw of the same precision ground level as the screw rod 31 is rotatably installed through angular contact ball bearings at both ends. At the top of the support column 10, an AC servo motor 13 with a brake is fixedly installed, and the output shaft of the motor is connected to the upper end of the screw rod 31 through a zero-backlash diaphragm coupling.

[0037] The lifting block 23 is a vertical movement execution component. The lifting block is internally integrated with a ball nut matched with the threaded rod 31, so as to convert the rotary motion of the threaded rod into linear lifting motion of itself. In order to prevent the lifting block 23 from rotating during lifting, a linear slide is installed on one side or both sides of the lifting block, which is in sliding fit with the linear guide rail fixed on the front surface of the support column 10. The forward and reverse rotation of the motor 13 can drive the lifting block 23 to accurately ascend and descend in the vertical direction.

[0038] The cutting assembly is fixedly installed on the front end surface of the lifting block 23, and includes a high-speed electric spindle as the driver 12. The electric spindle is internally provided with a high-speed motor, the rotating speed of which can be steplessly adjusted through a frequency converter, and ceramic bearings are adopted to adapt to stable operation under high rotating speed. The output end of the electric spindle is fixedly installed with a saw blade 30 for cutting through a flange plate. The material and tooth shape of the saw blade 30 are selected according to the material of the metal guide rail to be machined, for example, a carbide tooth saw blade or a high-speed steel saw blade.

[0039] In order to ensure safety and process requirements, a protective cover 6 made of cast aluminum is fixedly installed on the outer periphery of the saw blade 30. The protective cover 6 can cover most of the area of the saw blade, and only the necessary cutting edge is exposed in the cutting area. On the protective cover 6, a cooling liquid pipe 14 is installed, and the nozzle at the end thereof is accurately aimed at the meshing point of the saw blade and the workpiece. The cooling liquid is supplied by a separate cooling pump system, which is used for forced cooling and lubrication of the cutting area during cutting.

[0040] In addition, in order to protect the transmission components, an accordion-type telescopic cover 11 is further sleeved between the upper surface of the lifting block 23 and the fixed end of the support column 10. The telescopic cover 11 is made of oil-resistant and wear-resistant coated canvas, and can freely expand and contract with the movement of the lifting block 23, and always covers the exposed part of the threaded rod 31, so as to prevent the invasion of cutting chips and dust.

[0041] Working principle: first, the operator issues an instruction through the control panel to drive the first electric slide rail 7 to open the protective door 3. The operator puts a metal guide rail to be machined into the machining cabin 1 through the inlet and outlet 2, places the metal guide rail on the end support block 15 and the middle support block 20 on the base platform 5, and abuts the lower end of the metal guide rail against the end surface of the positioning rod 28 to complete positioning.

[0042] After the operator confirms that the feeding is completed on the external operation panel, the start button is pressed. The central control system immediately sends a signal to the electromagnetic valve group controlling the gas circuit, and the compressed air is introduced into the piston rod extension cavity of the first cylinder 16 and the second cylinder 22. The cylinder piston rod smoothly extends, driving the respective flexible clamps 17 to press towards the metal guide rail from the horizontal and vertical directions until the preset air pressure value is reached. In this process, the flexible clamp 17 clamping surface closely fits the guide rail profile to achieve firm clamping.

[0043] After the system detects the clamping completion signal, it drives the protective door 3 to close. Once the protective door 3 is fully closed and its limit switch is engaged, the cutting program starts. The central control system sends instructions to the servo driver of the horizontal moving component according to the preset cutting position parameters, driving the second electric slide rail 8 to move the entire cutting mechanism quickly to directly above the target cutting point.

[0044] After positioning is completed, the driver 12 of the cutting assembly, i.e., the electric spindle, starts and accelerates to the set operating speed in a short time. At the same time, the coolant pump starts, and coolant begins to spray through the coolant pipe 14. Subsequently, the central control system sends a command to the motor 13 of the vertical moving assembly, driving the threaded rod 31 to rotate at a constant speed, so that the lifting block 23 drives the rotating saw blade 30 to move downward at a set feed rate, performing the cutting operation on the firmly clamped metal guide rail.

[0045] Once the system detects that the cutting is complete, motor 13 immediately rotates rapidly in the opposite direction, causing the lifting block 23 to quickly raise the saw blade 30 to a safe height. Subsequently, the electric spindle and coolant pump stop working.

[0046] Finally, after the cutting mechanism resets, the protective door 3 opens automatically. Simultaneously, the solenoid valve controlling the air circuit switches, supplying compressed air to the piston rod retraction chambers of the first cylinder 16 and the second cylinder 22, causing the flexible clamp 17 to release the workpiece. The operator can then safely remove the precisely cut metal guide rail from the inlet / outlet 2, completing one full work cycle.

Claims

1. A positioning sawing device for a metal rail, characterized by, The utility model relates to a metal rail processing device, including, Processing cabin (1); Frame (4) is fixedly connected in the processing cabin (1) inside; Foundation platform (5) is fixedly connected at the top of frame (4) for carrying metal rail; Positioning mechanism is set up at the top of foundation platform (5) and is used for the position definition before processing to metal rail; Clamping mechanism is set up at the top of foundation platform (5), including vertical clamping subassembly and horizontal clamping subassembly, vertical clamping subassembly includes at least one middle support block (20), middle support block (20) is fixedly connected at the top of foundation platform (5), and one side of middle support block (20) is fixedly connected with second air cylinder (22), and the output end of second air cylinder (22) is fixedly connected with another flexible clamp (17); Cutting mechanism is movably arranged in the processing cabin (1) inside, and cutting mechanism includes: Cutting subassembly is used for executing cutting work to fixed metal rail, horizontal moving subassembly is used for driving cutting mechanism to move in horizontal direction, and vertical moving subassembly is used for driving cutting mechanism to move in vertical direction.

2. The sawing apparatus according to claim 1, wherein The processing cabin (1) is equipped with the inlet and outlet (2), and the inner side of the inlet and outlet (2) is provided with a protective door (3), which can be automatically opened and closed under the drive of the first electric sliding rail (7) fixed to the processing cabin (1).

3. The sawing apparatus according to claim 1, wherein The positioning mechanism includes a linear guide rail (24) fixed to the foundation platform (5), a adjusting block (25) slidably connected to the linear guide rail (24), an installation block (27) fixed to the top of the adjusting block (25), a positioning rod (28) fixed to the top of the installation block (27), and a positioning plate (26) fixed to both ends of the linear guide rail (24).

4. The sawing apparatus according to claim 1, wherein The horizontal clamping assembly includes at least one end support block (15) fixed to the top of the foundation platform (5), a baffle (19) fixed to the top of the end support block (15), a mounting rack (18) fixed to the outer side of the end support block (15), a first air cylinder (16) fixed to the top of the mounting rack (18), and a flexible clamp (17) fixed to the output end of the first air cylinder (16), wherein the flexible clamp (17) has a flexible clamping surface that can adapt to the outer shape of the metal rail.

5. The sawing apparatus according to claim 1, wherein The other side of the middle support block (20) is provided with a threaded hole (29), and an extension plate (21) is installed in the threaded hole (29) through screwing.

6. The sawing apparatus according to claim 1, wherein The horizontal moving assembly includes a second electric sliding rail (8) fixed to the inner side of the processing cabin (1), and an electric sliding block (9) slidably connected to the second electric sliding rail (8).

7. The sawing apparatus according to claim 6, wherein The vertical moving assembly comprises a supporting column (10) fixedly connected at the top of the electric sliding block (9), a threaded rod (31) rotatably connected to the inner side of the supporting column (10), a motor (13) fixedly arranged at the top of the supporting column (10) for driving the threaded rod (31), and a lifting block (23) threadedly connected to the outer side of the threaded rod (31).

8. The sawing apparatus according to claim 7, wherein The cutting assembly comprises a driver (12) fixedly connected to the outer side of the lifting block (23), and a saw blade (30) fixedly connected to the output end of the driver (12).

9. The sawing apparatus according to claim 8, wherein The saw blade (30) is provided with a protective cover (6) on the outer periphery, and a cooling liquid pipe (14) for spraying cooling liquid during cutting is arranged on the protective cover (6).

10. The sawing apparatus according to claim 7, wherein A telescopic cover (11) for protecting the threaded rod (31) is arranged between the lifting block (23) and the supporting column (10).

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