Clamping mechanism of metal machining lathe

Abstract

The utility model relates to a clamping mechanism of a metal machining lathe, which comprises two portal frames arranged oppositely, linear driving parts are arranged on the portal frames, lifting mechanisms are arranged at the bottoms of the linear driving parts, and clamping parts are connected to the bottoms of the lifting mechanisms; the clamping part comprises a rotating platform connected with the bottom of the lifting mechanism, two extending arms are oppositely arranged at the bottom of the rotating platform, and electromagnetic chucks are arranged at the bottoms of the extending arms. Through the synergistic effect of the linear driving part and the lifting mechanism, the clamping part can quickly and accurately move and position a workpiece, the manual operation time is shortened, the working efficiency is improved, the rotating platform and the extension arm are matched to adapt to workpieces of different shapes and sizes, the labor intensity of manual workpiece carrying and positioning is reduced, and the working efficiency is improved. And the workload of workers is reduced.

Description

Technical Field

[0001] This application relates to the field of metal processing technology, and in particular to a clamping mechanism for a metal processing lathe. Background Technology

[0002] During the processing of flame cutting machine frames, it is often necessary to clamp and position large metal plates before punching, cutting and other processing operations.

[0003] However, existing metalworking lathe clamping mechanisms often lack sufficient range of motion and adjustment capabilities when dealing with large metal sheets. This makes it difficult to move and position the sheet within the machining area, increasing operational difficulty and processing time.

[0004] Furthermore, existing clamping mechanisms present inconveniences when changing materials. Due to the large size and heavy weight of the sheet metal, changing materials requires significant manpower and time. This is especially true during the processing of the flame cutting machine frame, where the large size and complex shape of the sheet metal make existing clamping mechanisms inadequate. This not only affects processing efficiency and product quality but also increases production costs and labor intensity. To address these issues, a clamping mechanism for a metalworking lathe is designed. Utility Model Content

[0005] This application provides a clamping mechanism for a metalworking lathe to address the problem that existing lathe clamping mechanisms in the related art lack sufficient range of motion and adjustment capability when dealing with large metal sheets, making it difficult to move and position the sheet within the processing area, thus increasing operational difficulty and processing time.

[0006] In a first aspect, a clamping mechanism for a metalworking lathe is provided, comprising: two gantry frames arranged opposite each other, connected by a plurality of metal beams; a linear drive member is provided on each gantry frame; a lifting mechanism is provided at the bottom of each linear drive member; the linear drive member is used to drive the lifting mechanism to move along the length of the gantry frame; a clamping part is connected to the bottom of the lifting mechanism; the lifting mechanism is used to drive the clamping part to move up and down; the clamping part includes a rotary platform connected to the bottom of the lifting mechanism; two extension arms are arranged opposite each other at the bottom of the rotary platform; an electromagnetic chuck is provided at the bottom of each extension arm; the rotary platform is used to drive the extension arms to adjust their angle; and the electromagnetic chuck is used to adsorb workpieces.

[0007] In some embodiments, the linear drive includes a top beam disposed between the tops of two gantry frames, with two fixed seats arranged opposite each other at the bottom of the top beam. A pulley is rotatably disposed inside the fixed seat, and an adjusting belt is driven between the two pulleys. A mounting platform is disposed at the bottom of the adjusting belt, and a lifting mechanism is disposed at the bottom of the mounting platform. A drive motor is disposed on one of the fixed seats, and the output shaft of the drive motor is connected to the pulley and used to drive the pulley to rotate.

[0008] In some embodiments, a guiding mechanism is also included, comprising: two balance plates disposed opposite each other on the top of the mounting platform; slide rails disposed on both sides of the top beam; and a plurality of sliders disposed inside the balance plates, the sliders slidingly engaging with corresponding slide rails.

[0009] In some embodiments, the lifting mechanism includes a mounting base disposed below the mounting platform, the bottom of the mounting base having a cavity, an electric push rod disposed inside the cavity, and a connecting block disposed at the bottom end of the piston rod of the electric push rod.

[0010] In some embodiments, the rotating platform includes a rotating seat arranged outside the connecting block, an inner groove for receiving the connecting block being provided on the inner side of the rotating seat, two rotating shafts being arranged opposite each other on the inner side of the rotating seat, the other end of the rotating shafts being rotatably connected to the connecting block, the connecting block having a cavity inside, a reducer being provided on the connecting block, a second drive motor being provided on the reducer, the output shaft of the second drive motor being connected to the input shaft of the reducer, and the output shaft of the reducer being connected to one end of the rotating shafts; a fixed plate is provided at the bottom of the rotating seat.

[0011] In some embodiments, the fixing plate includes an interconnected U-shaped support plate and a crossbeam, with two extension arms disposed opposite each other on both sides of the crossbeam.

[0012] In some embodiments, the extension arm includes three cylinders disposed on one side of the crossbeam, with the middle cylinder having a cavity inside.

[0013] There is an electric push rod three, and a guide rod is inserted inside the two cylinders. A movable plate is provided between the piston rod of the electric push rod three and one end of the guide rod. Multiple connecting arms are provided on the other side of the movable plate. The connecting arms are L-shaped, and the electromagnetic chuck is provided between the bottoms of the multiple connecting arms on the same side.

[0014] This application provides a clamping mechanism for a metalworking lathe. Through the adsorption effect of an electromagnetic chuck, the metal sheet can maintain a stable position during processing, reducing processing errors caused by vibration or offset and improving processing accuracy.

[0015] The coordinated action of the linear drive and lifting mechanism enables the clamping unit to move and position workpieces quickly and accurately, reducing manual operation time and improving work efficiency. The rotating platform and extension arm work together to adapt to workpieces of different shapes and sizes, enhancing the stability and adaptability of clamping. Thus, the automated clamping and moving functions reduce the labor intensity of manual handling and positioning of workpieces, and reduce the workload of workers. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a three-dimensional structural schematic diagram provided in an embodiment of this application;

[0018] Figure 2 is a three-dimensional schematic diagram of the lifting component connection structure provided in an embodiment of this application;

[0019] Figure 3 is a left sectional view of the connection structure between the lifting component and the rotating platform provided in an embodiment of this application;

[0020] Figure 4 is a three-dimensional schematic diagram of the clamping part connection structure provided in an embodiment of this application;

[0021] Figure 5 is a bottom sectional view of the extension arm provided in an embodiment of this application;

[0022] Figure 6 is a three-dimensional schematic diagram of the linear drive unit provided in an embodiment of this application. Figure 1 ;

[0023] Figure 7 is a three-dimensional schematic diagram of the linear drive unit provided in an embodiment of this application. Figure 2 .

[0024] In the diagram: 1. Gantry frame; 2. Linear drive component; 3. Lifting mechanism; 4. Clamping part; 21. Top beam; 22. Fixed seat; 23. Pulley; 24. Adjusting belt; 25. Mounting platform; 26. Drive motor; 5. Guide mechanism; 51. Balance plate; 52. Slide rail; 53. Slider; 31. Mounting seat; 32. Electric push rod; 33. Connecting block; 41. Rotating platform; 411. Rotating seat; 412. Receiving groove; 413. Rotating shaft; 414. Reducer; 415. Drive motor two; 416. Fixed plate; 42. Extension arm; Electromagnetic chuck; 421. Cylinder; 422. Electric push rod three; 423. Guide rod; 424. Moving plate; 425. Connecting arm. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] This application provides a clamping mechanism for a metalworking lathe, which solves the problem that existing lathe clamping mechanisms in the related art lack sufficient range of motion and adjustment capability when dealing with large metal plates, making it difficult to move and position the plates within the processing area, thus increasing the difficulty of operation and processing time.

[0027] Please refer to Figures 1-3. A clamping mechanism for a metalworking lathe includes: two gantry frames 1 arranged opposite each other, connected by multiple metal beams; a linear drive 2 mounted on each gantry frame 1; a lifting mechanism 3 mounted at the bottom of each linear drive 2; the linear drive 2 driving the lifting mechanism 3 to move along the length of the gantry frame 1; a clamping part 4 connected to the bottom of the lifting mechanism 3; the lifting mechanism 3 driving the clamping part 4 to move up and down; the clamping part 4 including a rotating platform 41 connected to the bottom of the lifting mechanism 3; two extending arms 42 opposite each other mounted at the bottom of the rotating platform 41; an electromagnetic chuck 43 mounted at the bottom of each extending arm 42; the rotating platform 41 driving the extending arms 42 to adjust their angle; and the electromagnetic chuck 43 adsorbing workpieces.

[0028] Two opposing gantry frames 1 are connected by multiple metal beams to form a stable support structure.

[0029] Linear drive 2 drives lifting mechanism 3 to move along the length of gantry 1, thereby adjusting the horizontal position of the clamping mechanism. Lifting mechanism 3 has a clamping part 4 connected to its bottom. Lifting mechanism 3 drives clamping part 4 to move up and down to accommodate workpieces of different heights.

[0030] The rotating platform 41 can drive the extension arm 42 to adjust its angle, enabling the electromagnetic chuck 43 to adapt to workpieces of different shapes and sizes, ensuring the stability and accuracy of adsorption. The electromagnetic chuck 43 generates magnetic force by being energized, adsorbing the metal plate and maintaining its fixed position to prevent displacement during processing.

[0031] Through the coordinated action of the linear drive 2 and the lifting mechanism 3, the clamping part 4 can move the adsorbed metal sheet to the lathe's machining table. The lathe's machining table provides support for the metal sheet, while the electromagnetic chuck 43 continues to maintain the adsorption state, ensuring the stability of the workpiece during processing.

[0032] Through the adsorption effect of the electromagnetic chuck 43, the metal plate can maintain a stable position during processing, reducing processing errors caused by vibration or displacement and improving processing accuracy.

[0033] During the processing, the adsorption position of the electromagnetic chuck 43 on the metal plate is changed to complete the processing operations at different positions on the surface of the metal plate.

[0034] The coordinated action of the linear drive 2 and the lifting mechanism 3 enables the clamping part 4 to move and position the workpiece quickly and accurately, reducing manual operation time and improving work efficiency. The rotating platform 41 and the extension arm 42 work together to adapt to workpieces of different shapes and sizes, enhancing the stability and adaptability of clamping. Thus, the automated clamping and moving functions reduce the labor intensity of manual handling and positioning of workpieces, and reduce the workload of workers.

[0035] The electromagnetic chuck 43's adsorption effect avoids the risk of pinching or scratching the workpiece that may occur with traditional clamping methods, thus improving the safety of the processing.

[0036] As shown in Figures 1 and 6, in this embodiment, the linear drive component 2 includes a top beam 21 disposed between the tops of the two gantry frames 1. Two fixed seats 22 are arranged opposite each other at the bottom of the top beam 21. A pulley 23 is rotatably disposed inside each fixed seat 22. An adjusting belt 24 is connected between the two pulleys 23. A mounting platform 25 is disposed at the bottom of the adjusting belt 24. The lifting mechanism 3 is disposed at the bottom of the mounting platform 25. A drive motor 26 is disposed on one of the fixed seats 22. The output shaft of the drive motor 26 is connected to the pulley 23 and is used to drive the pulley 23 to rotate.

[0037] A top beam 21 is erected between the tops of the two gantry frames 1 to form the mounting base for the linear drive component 2. Two mounting seats 22 are installed opposite each other at the bottom of the top beam 21 to provide mounting support for subsequent components.

[0038] A rotatable pulley 23 is installed inside the fixed base 22, and the adjusting belt 24 is connected between the two pulleys 23 so that the adjusting belt 24 can be driven by the pulleys 23.

[0039] When the drive motor 26 starts, its output shaft drives the pulley 23 connected to it to rotate. Since the two pulleys 23 are connected by an adjusting belt 24, the rotation of one pulley 23 will drive the other pulley 23 to rotate synchronously, thereby causing the adjusting belt 24 to start rotating. The mounting platform 25 is connected to the adjusting belt 24. As the adjusting belt 24 is driven, the mounting platform 25 will move along the transmission direction of the adjusting belt 24.

[0040] The lifting mechanism 3 is located at the bottom of the mounting platform 25. The movement of the mounting platform 25 will cause the lifting mechanism 3 to move accordingly. The clamping part 4 is connected to the bottom of the lifting mechanism 3, so the movement of the lifting mechanism 3 will further drive the clamping part 4 to move along the length of the gantry 1, thereby realizing the horizontal position adjustment of the clamping part 4.

[0041] By controlling the rotational speed of the pulley 23 via the drive motor 26, the transmission speed and distance of the belt 24 can be precisely adjusted, thereby accurately controlling the moving positions of the mounting table 25, the lifting mechanism 3, and the clamping part 4. This allows the clamping part 4 to accurately move to the desired position for clamping the workpiece, improving the accuracy of workpiece clamping and processing precision.

[0042] As shown in Figure 7, this embodiment further includes a guide mechanism 5, which includes: two balance plates 51 disposed opposite to each other on the top of the mounting platform 25; slide rails 52 disposed on both sides of the top beam 21; and a plurality of sliders 53 disposed on the inner side of the balance plates 51, wherein the sliders 53 slide in cooperation with the corresponding slide rails 52.

[0043] The two balance plates 51 serve as connecting components between the guide mechanism 5 and the mounting platform 25, providing stability and support.

[0044] The slide rail 52 provides a track and guide for the sliding of the slider 53. The slider 53 slides in conjunction with the corresponding slide rail 52 to form a sliding connection.

[0045] When the drive motor 26 of the linear drive unit 2 starts, it drives the adjusting belt 24 to drive the transmission. Since the slider 53 on the inner side of the balance plate 51 slides in cooperation with the slide rails 52 on both sides of the top beam 21, the slider 53 will slide on the slide rails 52 during the movement of the mounting platform 25, which provides guidance and constraint for the movement of the mounting platform 25, ensuring that the mounting platform 25 can move smoothly along the predetermined straight direction and avoid deviation or shaking.

[0046] As shown in Figures 1 and 3, in one embodiment, the lifting mechanism 3 includes a mounting base 31 disposed below the mounting platform 25. The bottom of the mounting base 31 is provided with a cavity, and an electric push rod 32 is disposed inside the cavity. A connecting block 33 is disposed at the bottom end of the piston rod of the electric push rod 32.

[0047] Mounting base 31 provides a stable mounting position for the component. The cavity provides mounting space for electric actuator 32, allowing electric actuator 32 to be installed inside mounting base 31 while maintaining the compactness of the overall structure.

[0048] When it is necessary to control the lifting and lowering of the clamping part 4, the electric push rod 32 is activated. The piston rod of the electric push rod 32 will extend or retract according to the control signal. If it is necessary to lower the clamping part 4, the piston rod of the electric push rod 32 will extend and push the connecting block 33 to move downward. Since the connecting block 33 is connected to the clamping part 4, the downward movement of the connecting block 33 will drive the clamping part 4 to descend together.

[0049] Conversely, if the clamping part 4 needs to rise, the piston rod of the electric push rod 32 will retract, pulling the connecting block 33 upward, thereby raising the clamping part 4.

[0050] The electric actuator 32 can precisely control the extension and retraction distance of the piston rod, thereby achieving precise control over the lifting height of the clamping part 4. This allows the clamping part 4 to be accurately adjusted to the appropriate position according to the height of the workpiece and processing requirements, improving the accuracy of workpiece clamping and processing.

[0051] Because the electric push rod 32 can flexibly adjust the extension length of the piston rod, the lifting mechanism 3 can adapt to workpieces of different sizes. When processing workpieces of different heights, the height of the clamping part 4 can be quickly adjusted simply by controlling the extension and retraction of the piston rod of the electric push rod 32, thus improving the versatility of the equipment and production efficiency.

[0052] As shown in Figures 2 and 3, in one embodiment, the rotating platform 41 includes a rotating seat 411 arranged outside the connecting block 33. The rotating seat 411 has an inner cavity for receiving the connecting block 33. Two rotating shafts 413 are arranged opposite each other on the inner side of the rotating seat 411. The other end of the rotating shafts 413 is rotatably connected to the connecting block 33. The connecting block 33 has a cavity inside. The connecting block 33 is equipped with a reducer 414. A second drive motor 415 is provided on the reducer 414. The output shaft of the second drive motor 415 is connected to the input shaft of the reducer 414. The output shaft of the reducer 414 is connected to one end of the rotating shafts 413. A fixed disk 416 is provided at the bottom of the rotating seat 411.

[0053] The rotating base 411 has a receiving groove 412 on its inner side, and the connecting block 33 is partially placed in the receiving groove 412. One end of the rotating shaft 413 is fixed to the rotating base 411, and the other end is rotatably connected to the connecting block 33. This connection method allows the rotating base 411 to rotate relative to the connecting block 33 around the rotating shaft 413.

[0054] The connecting block 33 has an internal cavity, in which a reducer 414 is installed. A second drive motor 415 is mounted on the reducer 414. The output shaft of the second drive motor 415 is connected to the input shaft of the reducer 414, and the output shaft of the reducer 414 is connected to one end of the rotating shaft 413, forming a complete power transmission path.

[0055] When it is necessary to drive the rotating platform 41 to rotate, the second drive motor 415 is started. The output shaft of the second drive motor 415 starts to rotate, transmitting power to the input shaft of the reducer 414. The reducer 414 reduces the speed of the input shaft and transmits the reduced speed to the output shaft. The function of the reducer 414 is to increase the output torque, so that the rotating seat 411 can rotate more stably and powerfully. The output shaft of the reducer 414 drives the rotating shaft 413 to rotate. Since the rotating shaft 413 is connected to the rotating seat 411 and the connecting block 33 is fixed on the lifting mechanism 3, the rotation of the rotating shaft 413 will drive the rotating seat 411 to rotate around the axis of the rotating shaft 413.

[0056] The rotation of the rotating base 411 will further drive the bottom fixed plate 416 and the clamping component mounted on the fixed plate 416 to rotate, thereby realizing the rotational movement of the clamping component.

[0057] As shown in Figures 2 and 4, specifically, the fixed plate 416 in this embodiment includes an interconnected U-shaped support plate and a crossbeam, with the two extension arms 42 arranged opposite to each other on both sides of the crossbeam.

[0058] The U-shaped support plate provides a stable support frame, and its U-shaped design can provide a certain amount of space for the installation and movement of other components while ensuring structural strength.

[0059] The crossbeams mainly provide horizontal support and connect the U-shaped support plates, enhancing the structural stability of the entire fixed plate 416.

[0060] As shown in Figures 4 and 5, in one embodiment, the extension arm 42 includes three cylinders 421 disposed on one side of the crossbeam. An electric push rod 422 is disposed inside the middle cylinder 421, and guide rods 423 are inserted into the two cylinders 421. A movable plate 424 is disposed between the piston rod of the electric push rod 422 and one end of the guide rod 423. Multiple connecting arms 425 are disposed on the other side of the movable plate 424. The connecting arms 425 are L-shaped, and the electromagnetic chuck 43 is disposed between the bottoms of the multiple connecting arms 425 on the same side.

[0061] The piston rod and guide rod 423 of the electric actuator 422 are connected at one end to the moving plate 424. The other side of the moving plate 424 is connected to the electromagnetic chuck 43 through multiple L-shaped connecting arms 425. At this time, the electric actuator 422 is in the off state, and the electromagnetic chuck 43 is in the initial position, waiting to perform the clamping task.

[0062] When the positions of the electromagnetic chucks 43 on both sides need to be adjusted according to processing requirements, the electric push rod 422 is activated. The piston rod of the electric push rod 422 extends or retracts, driving the moving plate 424 to move along the direction of the guide rod 423. Since the moving plate 424 is connected to the connecting arm 425, and the connecting arm 425 is connected to the electromagnetic chuck 43, the movement of the moving plate 424 will drive the electromagnetic chuck 43 to move together, thereby realizing the adjustment of the position of the electromagnetic chuck 43.

[0063] Once the electromagnetic chuck 43 has moved to the appropriate position, it is energized to generate a magnetic force. The electromagnetic chuck 43 then uses this magnetic force to attract the workpiece, completing the clamping action. At this point, the workpiece is firmly fixed on the electromagnetic chuck 43, allowing for subsequent processing operations.

[0064] After the machining operation is completed, the power to the electromagnetic chuck 43 is turned off, the magnetic force disappears, and the workpiece is detached from the electromagnetic chuck 43. If it is necessary to readjust the position of the electromagnetic chuck 43 to adapt to new machining requirements, the electric push rod 3 422 can be restarted, and the above position adjustment process can be repeated.

[0065] The moving plate 424 is moved by the electric push rod 422, which in turn drives the electromagnetic chuck 43 to adjust its position. This allows the electromagnetic chuck 43 to be flexibly adjusted according to the shape, size, and processing requirements of different workpieces. This enables the clamping part 4 to adapt to various processing scenarios, improving the versatility and adaptability of the equipment.

[0066] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0067] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A clamping mechanism for a metalworking lathe, characterized in that, include: Two gantry frames (1) are arranged opposite each other and connected by multiple metal beams. A linear drive (2) is provided on the gantry frame (1). A lifting mechanism (3) is provided at the bottom of the linear drive (2). The linear drive (2) is used to drive the lifting mechanism (3) to move along the length of the gantry frame (1). A clamping part (4) is connected to the bottom of the lifting mechanism (3). The lifting mechanism (3) is used to drive the clamping part (4) to lift. The clamping part (4) includes a rotating platform (41) connected to the bottom of the lifting mechanism (3). Two extension arms (42) are arranged opposite each other at the bottom of the rotating platform (41). An electromagnetic chuck (43) is provided at the bottom of the extension arms (42). The rotating platform (41) is used to drive the extension arms (42) to adjust the angle. The electromagnetic chuck (43) is used to adsorb the workpiece.

2. The clamping mechanism of a metalworking lathe according to claim 1, characterized in that: The linear drive unit (2) includes a top beam (21) disposed between the tops of the two gantry frames (1). Two fixed seats (22) are arranged opposite each other at the bottom of the top beam (21). A pulley (23) is rotatably disposed on the inner side of the fixed seat (22). An adjusting belt (24) is connected between the two pulleys (23). A mounting platform (25) is disposed at the bottom of the adjusting belt (24). The lifting mechanism (3) is disposed at the bottom of the mounting platform (25). A drive motor (26) is disposed on one side of the fixed seat (22). The output shaft of the drive motor (26) is connected to the belt. The wheel (23) is connected and used to drive the pulley (23) to rotate.

3. The clamping mechanism of a metalworking lathe according to claim 2, characterized in that: It also includes a guide mechanism (5), which includes: two balance plates (51) disposed opposite to each other on the top of the mounting platform (25); and slide rails (52) disposed on both sides of the top beam (21); and multiple sliders (53) disposed on the inner side of the balance plates (51), the sliders (53) slidingly engaging with the corresponding slide rails (52).

4. The clamping mechanism of a metalworking lathe according to claim 2, characterized in that: The lifting mechanism (3) includes a mounting base (31) located below the mounting platform (25). The bottom of the mounting base (31) is provided with a cavity, and an electric push rod (32) is provided inside the cavity. A connecting block (33) is provided at the bottom end of the piston rod of the electric push rod (32).

5. The clamping mechanism of a metalworking lathe according to claim 4, characterized in that: The rotating platform (41) includes a rotating seat (411) arranged outside the connecting block (33). The rotating seat (411) has a receiving groove (412) for the connecting block (33) on its inner side. Two rotating shafts (413) are arranged opposite each other on the inner side of the rotating seat (411). The other end of the rotating shaft (413) is rotatably connected to the connecting block (33). The connecting block (33) has a cavity inside. The connecting block (33) is equipped with a reducer (414). The reducer (414) is equipped with a second drive motor (415). The output shaft of the second drive motor (415) is connected to the input shaft of the reducer (414). The output shaft of the reducer (414) is connected to one end of the rotating shaft (413). A fixed plate (416) is provided at the bottom of the rotating seat (411).

6. The clamping mechanism of a metalworking lathe according to claim 5, characterized in that: The fixed plate (416) includes a U-shaped support plate and a crossbeam connected to each other, and the two extension arms (42) are arranged opposite each other on both sides of the crossbeam.

7. The clamping mechanism of a metalworking lathe according to claim 6, characterized in that: The extension arm (42) includes three cylinders (421) disposed on one side of the crossbeam. An electric push rod three (422) is disposed inside the middle cylinder (421). A guide rod (423) is inserted into the two cylinders (421). A movable plate (424) is disposed between the piston rod of the electric push rod three (422) and one end of the guide rod (423). Multiple connecting arms (425) are disposed on the other side of the movable plate (424). The connecting arms (425) are L-shaped. The electromagnetic chuck (43) is disposed between the bottoms of the multiple connecting arms (425) on the same side.

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