Row tool milling composite lathe

Abstract

The invention relates to the technical field of numerical control lathes, in particular to a gang tool milling composite lathe which comprises a numerical control lathe, a milling tool apron, turning tool rests and a moving platform used for moving and replacing the same set of tools, and the fixed end of the moving platform is installed on the numerical control lathe through bolts. In addition, only corresponding turning tools need to be mounted on each mounting table in advance according to the machining process, a plurality of turning tools of corresponding processes can be quickly replaced by replacing the mounting tables in the subsequent machining process, the turning tools do not need to be disassembled one by one, and the turning tools can be quickly replaced according to the milling machining processes of different workpieces when the mounting tables are replaced. The position of each turning tool on the mounting table is adjusted, so that more tools can be mounted in a compact space through the turning tools mounted on the inclined rails, the tool collision phenomenon is avoided, and meanwhile, flexible adjustment can be carried out according to the machining processes of different parts.

Description

Technical Field

[0001] This invention relates to the field of CNC lathe technology, and in particular to a multi-tool milling lathe. Background Technology

[0002] The milling composite lathe integrates turning and milling, and is a key piece of equipment for intelligent manufacturing of mass precision parts in the automotive, medical, and 3C fields. The spindle has dual modes of high-speed rotation and C-axis precision indexing. A row of tool holders is arranged on the front of the bed, among which the multi-station is a built-in power tool holder that can be equipped with milling cutters and drills and rotate on its own. The X, Y, and Z axes are servo driven, which enables both linear turning feed and interpolation milling motion between the tool and the workpiece.

[0003] During machining, the spindle is started to rotate, and the turntable tool completes turning operations such as external diameter, internal hole, and grooving. Then the spindle switches to C-axis positioning, the power tool holder is started, and the workpiece is milled in flat position, drilled in the circumferential direction, and machined on curved surfaces according to the program. No machine change or secondary clamping is required throughout the process. The machine body adopts an integral slant bed structure, and the chips slide down the slope automatically. It is also equipped with a cooling and centralized chip removal system to maintain continuous production cleanliness and improve positional accuracy and production efficiency.

[0004] In the current era of rapid development of the intelligent manufacturing equipment industry, multi-process integrated milling composite lathes have become the standard equipment on production lines. However, the existing bar-type structure still uses a single-row fixed tool holder layout. The longitudinal space of the slant bed is already limited. After the power tool holder and the turning tool are mixed together, there are often less than ten available tool positions. When facing complex workpieces with external diameters, internal holes, end face grooves, multi-angle drilling and threads, operators need to frequently stop the machine to manually change tools and repeatedly pull the dial indicator to set the tool. This lengthens the process chain, increases the cumulative error, and reduces the equipment utilization rate, making it difficult to adapt to the flexible production needs of small batches and multiple varieties.

[0005] Therefore, a multi-tool milling lathe is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a multi-tool milling lathe.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a multi-tool milling lathe, comprising a CNC lathe, a milling cutter holder, a turning tool post, and a moving platform for moving and changing tools of the same group. The fixed end of the moving platform is bolted to the CNC lathe. Both the moving end and the fixed end of the moving platform have notches. A storage frame is fixedly connected to the inner side of the notch at the moving end of the moving platform. A sliding frame is slidably connected to the side wall of the storage frame. A base plate is fixedly connected to the bottom of the storage frame. An upper electric telescopic cylinder is fixedly connected to the bottom of the base plate. The output end of the upper electric telescopic cylinder passes through the top of the base plate and is fixedly connected to the bottom of the sliding frame. Three mounting platforms are fixedly connected at equal intervals inside the sliding frame. Several lathe tool holders are provided. Several sliding grooves are opened at equal intervals on the top of each of the three mounting platforms. T-blocks are slidably connected to the inner side of each of the sliding grooves. Several lathe tool holders are fixedly connected to the top of the T-blocks. Fixed frames are fixedly connected to the side walls of the lathe tool holders. Round rods are provided next to the fixed frames. The moving platform is provided with a replacement mechanism for adjusting the position of the lathe tool holders before locking them.

[0008] In the above technical solution, the tool holder is equipped with turning tools of different types, and a return spring is fixedly connected between the inner side of the slide groove and the side wall of the T-block.

[0009] In the above technical solution, a pair of milling cutter holders are provided, a conversion plate is slidably connected to the top of the moving platform, the milling cutter holders are all fixedly connected to the top of the conversion plate, a side electric telescopic cylinder is fixedly connected to the top of the moving platform, the output end of the side electric telescopic cylinder is fixedly connected to the side wall of the conversion plate, and different types of milling cutters are provided on the output end of the milling cutter holders.

[0010] In the above technical solution, the replacement mechanism further includes a lower electric telescopic cylinder. A side plate is fixedly connected to the top of the moving platform. The lower electric telescopic cylinder is fixedly connected to the side wall of the side plate. A lifting frame is slidably connected to the top of the moving platform. The output end of the lower electric telescopic cylinder passes through the side plate and is fixedly connected to the side wall of the lifting frame. An electromagnet is provided on the side wall of the lifting frame. A connecting plate is fixedly connected to the top of the electromagnet. Several extrusion plates are fixedly connected at equal intervals on the side wall of the connecting plate. Each of the extrusion plates has an inclined groove for extruding a round rod on the side near the lifting frame.

[0011] In the above technical solution, a top frame is fixedly connected to the top of each fixed frame, and the top frame is made of iron.

[0012] In the above technical solution, a threaded rod is rotatably connected to the inner side of the lifting frame, a drive motor is fixedly connected to the top of the lifting frame, the output end of the drive motor passes through the inner side of the lifting frame and is fixedly connected to the top of the threaded rod, a lifting block is longitudinally slidably connected to the inner side of the lifting frame, the lifting block is fixedly connected to the side wall of the electromagnet, and the threaded rod is threadedly connected to the inner side wall of the lifting block.

[0013] In the above technical solution, further, an adjusting block is slidably connected to the inner side of the fixed frame, a threaded groove is opened at the top of the adjusting block, a rectangular groove is opened through the bottom of the threaded groove, an insert plate is slidably connected to the inner side of the rectangular groove, and the round rod is fixedly connected to the side wall of the adjusting block.

[0014] In the above technical solution, a screw is threadedly connected to the inner side of the threaded groove, the bottom end of the screw is rotatably connected to the top of the insert plate, and several slots are equally spaced through the bottom of the fixing frame, and the insert plate is inserted into the inner side of one of the slots.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention, through the setting of a fixed frame and a replacement mechanism, can vertically store multiple rows of turning tool holders, occupying little space. Moreover, as long as the corresponding turning tools are installed on each mounting table in advance according to the processing technology, multiple turning tools for the corresponding process can be quickly replaced by changing the mounting table during subsequent processing, without the need for disassembly and assembly one by one.

[0017] 2. By using a structure such as a round rod and screws, this invention allows for the adjustment of the position of each turning tool on the mounting table according to the milling process of different workpieces when changing the mounting table. Thus, the turning tools mounted on the inclined rail can accommodate more tools in a compact space, avoiding tool collision. At the same time, it can also be flexibly adjusted according to the processing technology of different parts. Attached Figure Description

[0018] Figure 1 This is a front three-dimensional structural diagram of the milling composite lathe of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall appearance structure of the mobile platform of the present invention;

[0020] Figure 3 Appendix of the present invention Figure 2 A magnified view of the structure at point A in the middle;

[0021] Figure 4 This is a bottom-view perspective view of the storage frame, lifting frame, and lower electric telescopic cylinder of the present invention.

[0022] Figure 5This is a schematic diagram of the overall appearance structure of the sliding frame of the present invention;

[0023] Figure 6 This is a bottom-view perspective view of the electromagnet and extrusion plate of the present invention.

[0024] Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the lathe tool holder and mounting table of the present invention.

[0025] Figure 8 This is a schematic diagram of the overall appearance structure of the fixed frame of the present invention;

[0026] Figure 9 This is a partial rear-view cross-sectional three-dimensional structural diagram of the fixed frame of the present invention.

[0027] In the diagram: 1. CNC lathe; 2. Moving platform; 3. Milling cutter holder; 4. Turning tool post; 5. Sliding frame; 6. Upper electric telescopic cylinder; 7. Mounting table; 8. Slide groove; 9. T-block; 10. Fixed frame; 11. Round rod; 12. Turning tool; 13. Return spring; 14. Conversion plate; 15. Side electric telescopic cylinder; 16. Milling cutter; 17. Lower electric telescopic cylinder; 18. Side plate; 19. Lifting frame; 20. Electromagnet; 21. Connecting plate; 22. Extrusion plate; 23. Top frame; 24. Adjusting block; 25. Threaded groove; 26. Screw; 27. Rectangular groove; 28. Insert plate; 29. ​​Slot; 30. Base plate; 31. Threaded rod; 32. Drive motor; 33. Lifting block; 34. Notch; 35. Storage frame; 36. Inclined groove. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0030] In practical use, it has been found that in the current era of rapid development of the intelligent manufacturing equipment industry, multi-process integrated milling composite lathes have become the standard configuration of production lines. However, the existing slant bed structure still uses a single-row fixed tool holder layout. The longitudinal space of the slant bed is already limited. After the power tool holder and the turning tool are mixed, there are often less than ten available tool positions. When facing complex workpieces with external diameters, internal holes, end face grooves, multi-angle drilling and threads, the operator needs to frequently stop the machine to manually change tools and repeatedly pull the dial indicator to set the tool. This lengthens the process chain, increases the cumulative error, and reduces the equipment utilization rate, making it difficult to meet the needs of flexible production of small batches and multiple varieties. In order to solve the above problems, the following structure was invented.

[0031] like Figures 1-9 The illustrated multi-tool milling lathe includes a CNC lathe 1, a milling cutter holder 3, a turning tool post 4, and a moving platform 2 for moving and changing tools of the same group. The fixed end of the moving platform 2 is bolted to the CNC lathe 1. The moving platform 2 is driven to move by a servo motor via a lead screw. The encoder transmits the position in real time. The moving platform 2 moves precisely along a linear guide rail. When it reaches the desired position, the rear gear plate or conical surface locks, completing the tool exchange. After the lock is released, the platform resets. The entire process is controlled by a closed-loop CNC system, with high repeatability and reliable tool changing. Both the moving end and the fixed end of the moving platform 2 have notches 34. A storage frame 35 is fixedly connected to the inner side of the notch 34 on the moving end of the moving platform 2. The notch 34 prevents the movement of the storage frame 35 from being obstructed when the moving platform 2 changes tools.

[0032] A sliding frame 5 is longitudinally slidably connected to the side wall of the storage frame 35. A base plate 30 is fixedly connected to the bottom of the storage frame 35. An upper electric telescopic cylinder 6 is fixedly connected to the bottom of the base plate 30. The output end of the upper electric telescopic cylinder 6 passes through the top of the base plate 30 and is fixedly connected to the bottom of the sliding frame 5. Three mounting platforms 7 are fixedly connected at equal intervals inside the sliding frame 5. Several lathe tool holders 4 are provided. Several sliding grooves 8 are opened at equal intervals on the top of each of the three mounting platforms 7. T-blocks 9 are slidably connected to the inner side of each of the sliding grooves 8. Several lathe tool holders 4 are fixedly connected to the top of each of the T-blocks 9. Fixed frames 10 are fixedly connected to the side walls of each lathe tool holder 4. A round rod 11 is provided next to the fixed frame 10. A replacement mechanism for adjusting the position of the lathe tool holder 4 and then locking it is provided on the moving platform 2.

[0033] The tool holder 4 is equipped with different types of turning tools 12. The inner side of the slide groove 8 and the side wall of the T-block 9 are fixedly connected with a return spring 13. With the setting of the return spring 13, when the replacement mechanism is reset and the pressure on the tool holder 4 is released, the tool holder 4 can be quickly pulled to reset, which makes it easy to store the tool holder 4 and the turning tools 12 in the future.

[0034] A pair of milling cutter holders 3 are provided. A conversion plate 14 is slidably connected to the top of the moving platform 2. The milling cutter holders 3 are all fixedly connected to the top of the conversion plate 14. A side electric telescopic cylinder 15 is fixedly connected to the top of the moving platform 2. The output end of the side electric telescopic cylinder 15 is fixedly connected to the side wall of the conversion plate 14. The output end of the milling cutter holders 3 is equipped with milling cutters 16 of different models. The milling cutter holders 3 are driven by a motor to rotate the spindle, thereby directly driving the milling cutters 16 to rotate at high speed, realizing the rotary cutting function on the milling and turning composite machine tool.

[0035] The replacement mechanism includes a lower electric telescopic cylinder 17, a side plate 18 fixedly connected to the top of the moving platform 2, the lower electric telescopic cylinder 17 fixedly connected to the side wall of the side plate 18, a lifting frame 19 slidably connected to the top of the moving platform 2, the output end of the lower electric telescopic cylinder 17 passes through the side plate 18 and is fixedly connected to the side wall of the lifting frame 19, an electromagnet 20 is provided on the side wall of the lifting frame 19, a connecting plate 21 is fixedly connected to the top of the electromagnet 20, and several extrusion plates 22 are fixedly connected at equal intervals on the side wall of the connecting plate 21, and a series of extrusion plates 22 are provided on the side of the extrusion plates 22 near the lifting frame 19, and a slanted groove 36 for extruding the round rod 11 is opened therein;

[0036] Each fixed frame 10 has a top frame 23 fixedly connected to its top end, and the top frame 23 is made of iron.

[0037] A threaded rod 31 is rotatably connected to the inner side of the lifting frame 19. A drive motor 32 is fixedly connected to the top of the lifting frame 19. The output end of the drive motor 32 passes through the inner side of the lifting frame 19 and is fixedly connected to the top of the threaded rod 31. A lifting block 33 is longitudinally slidably connected to the inner side of the lifting frame 19. The lifting block 33 is fixedly connected to the side wall of the electromagnet 20. The threaded rod 31 passes through and is threadedly connected to the inner side wall of the lifting block 33.

[0038] In the process of machining parts on a milling composite lathe, the parts are first clamped on the fixture. During milling, the moving platform 2 is controlled to move the milling cutter 16 on one of the milling cutter holders 3 to the side of the workpiece. At the same time, the milling cutter holder 3 is controlled to drive the milling cutter 16 to rotate, thus completing the milling of the parts. Then, when turning is required, the moving platform 2 is controlled to move the milling cutter holder 3 away, and the fixture of the CNC lathe 1 is controlled to rotate. The turning cutter 12 on the moving platform 2 is controlled to move to the side of the rotating workpiece, thereby realizing the milling composite machining.

[0039] When it is necessary to change the tool during the processing, first control the electromagnet 20 to de-energize and release the attraction and fixation of the top frame 23, then control the drive motor 32 to start and drive the threaded rod 31 to rotate, which in turn drives the threaded lifting block 33 to move upward, thereby driving the electromagnet 20 to move upward, and at the same time driving the connecting plate 21 and the pressing plate 22 to move upward. At this time, the inclined groove 36 of the pressing plate 22 will gradually release the pressure on the round rod 11, and then the T-block 9 will be pulled back to reset under the elastic force of the reset spring 13, and the turning tool holder 4 and the turning tool 12 will be reset. Then, under the control, the electric telescopic cylinder 17 will start to pull the lifting frame 19 to move on the moving platform 2, thereby driving the lifting block 33, the electromagnet 20 and the pressing plate 22 to move away from the fixed frame 10.

[0040] Then, control the upper electric telescopic cylinder 6 to start and drive the sliding frame 5 to slide upward, thereby driving multiple mounting platforms 7, the lathe tool holder 4 and the turning tool 12 to move upward. Once the second row of mounting platforms 7 is moved to a position flush with the moving platform 2, control the upper electric telescopic cylinder 6 to stop running. Then, control the lower electric telescopic cylinder 17 to start and push the lifting frame 19, the electromagnet 20 and the extrusion plate 22 to move to one side of the mounting platform 7, thereby driving the extrusion plate 22 to move above multiple fixed frames 10. Then, control the drive motor 32 to rotate in the opposite direction, drive the threaded rod 31 to reverse, and then drive the lifting block 33 to move downward. At this time, the electromagnet 20, the connecting plate 21 and the extrusion plate 22 will move downward. Since the lathe tool holder 4 and the T-block 9 can only slide laterally in the slide groove 8, under the action of the inclined surface of the inclined groove 36 on the extrusion plate 22 pressing the round rod 11, the round rod 11, the fixed frame 10, the lathe tool holder 4 and the turning tool 12 will be pushed to slide to one side of the lifting frame 19.

[0041] This causes the T-block 9 to slide within the groove 8, while simultaneously gradually stretching the return spring 13. (It should be noted that the round rod 11 is located at different positions on each fixed frame 10. Therefore, when multiple extrusion plates 22 move down, the inclined groove 36 will first extrude the round rod 11 closest to the cutting tool holder 4, and then gradually extrude the remaining round rods 11 according to the distance. Finally, all round rods 11 will be extruded to the designated position. Moreover, by installing the cutting tools in an inclined arrangement, the cutting tools are staggered, with the tool tips offset forward and backward and left and right, so that the projections of adjacent tool holders overlap, avoiding the gaps required for straight-line arrangement.) After the tool body is embedded in the T-slot of the slant bed, the overlapping area of ​​the tool tip is absorbed by the bed space, shortening the lateral length. With the same number of tools, the tool post is shorter, thus realizing multi-tool arrangement in a compact machine tool and saving space. Finally, the electromagnet 20 moves to the top frame 23, which controls the drive motor 32 to stop running and controls the electromagnet 20 to be energized, attracting and fixing the top frame 23, thereby limiting the position of the turning tool post 4, ensuring stability in the subsequent turning process, and thus completing the rapid adjustment of multiple tool posts without having to disassemble and assemble them one by one. If it needs to be adjusted back, the above operation can be repeated in reverse.

[0042] During the tool changing process, when it is necessary to change the corresponding milling cutter 16, the electric telescopic cylinder 15 on the control side is activated to drive the conversion plate 14 to move, thereby driving the two milling cutter holders 3 to move, so as to change the position of the milling cutter 16 and complete the quick change of the milling cutter 16.

[0043] In summary, the above-described structure allows for the longitudinal storage of multiple rows of turning tool holders 4, occupying a small space. Moreover, by pre-installing the corresponding turning tools 12 on each mounting table 7 according to the machining process, multiple turning tools 12 for the corresponding process can be quickly replaced during subsequent machining by changing the mounting table 7, eliminating the need for disassembly and assembly one by one, thus improving the convenience of the device. At the same time, when changing the mounting table 7, the position of each turning tool 12 on the mounting table 7 can be adjusted according to the milling process of different workpieces. Thus, the turning tools 12 mounted by the inclined rail can be installed in a compact space, allowing for the installation of more tools and avoiding tool collision.

[0044] Based on the above embodiments, it was found during use that if the position of the round rod 11 is such that the tool holder 4 on each mounting table 7 can only be pulled out by a fixed distance, but during the processing, different turning tools 12 require different reserved positions in different processing processes, so it cannot meet the diverse processing needs. In order to solve the above problems, the above structure has been further improved.

[0045] An adjusting block 24 is slidably connected to the inner side of the fixed frame 10. A threaded groove 25 is opened at the top of the adjusting block 24, and a rectangular groove 27 is opened through the bottom of the threaded groove 25. An insert plate 28 is slidably connected to the inner side of the rectangular groove 27, and a round rod 11 is fixedly connected to the side wall of the adjusting block 24.

[0046] A screw 26 is threaded inside the threaded groove 25. The bottom end of the screw 26 is rotatably connected to the top end of the insert plate 28. Several slots 29 are equally spaced through the bottom end of the fixing frame 10. The insert plate 28 is inserted into the inside of one of the slots 29.

[0047] During the installation of the turning tool 12, when adjusting the position of each turning tool 12 after replacement according to the turning process, the screw 26 can be unscrewed. This will pull the insert plate 28 to slide upward in the rectangular groove 27, thereby causing the insert plate 28 to slide out of the slot 29, releasing the position restriction on the adjusting block 24. Then, the adjusting block 24 can be pushed to move, and the round rod 11 can be moved to change the position of the round rod 11. (It should be noted that the inner side of the fixing frame 10 has a scale value to ensure the precise adjustment of the position of the adjusting block 24, thereby ensuring the precise adjustment of the position of the turning tool 12.) After the adjustment is completed, the screw 26 can be rotated in the opposite direction to drive the insert plate 28 to slide downward in the rectangular groove 27 and insert into the corresponding slot 29, restricting the position of the adjusting block 24 and the round rod 11, thus completing the adjustment.

[0048] Furthermore, during the subsequent replacement process, when the extrusion plate 22 moves downward, if the round rod 11 is adjusted towards the side closer to the mounting table 7, the inclined groove 36 on the extrusion plate 22 will press the round rod 11 to move earlier than before, thereby pressing the fixed frame 10, the tool holder 4, and the turning tool 12 to move a longer distance. If the round rod 11 is adjusted away from the mounting table 7, the inclined groove 36 on the extrusion plate 22 will press the round rod 11 to move more slowly than before, thereby pressing the fixed frame 10, the tool holder 4, and the turning tool 12 to move a shorter distance. This allows for flexible adjustment according to the turning process.

[0049] In summary, the above structural design allows for flexible adjustments based on the processing technology of different parts, further improving the device's convenience and meeting diverse processing needs.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0051] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A multi-tool milling lathe, comprising a CNC lathe (1), a milling cutter holder (3), a cutting tool post (4), and a moving platform (2) for moving and changing tools of the same group, characterized in that: The fixed end of the mobile platform (2) is bolted to the CNC lathe (1). Both the moving end and the fixed end of the mobile platform (2) have notches (34). A storage frame (35) is fixedly connected to the inner side of the notch (34) of the moving end of the mobile platform (2). A sliding frame (5) is slidably connected to the side wall of the storage frame (35). A base plate (30) is fixedly connected to the bottom end of the storage frame (35). An upper electric telescopic cylinder (6) is fixedly connected to the bottom of the base plate (30). The output end of the upper electric telescopic cylinder (6) passes through the top of the base plate (30) and is fixedly connected to the bottom end of the sliding frame (5). The sliding frame (5) has three mounting platforms (7) fixedly connected at equal intervals on its inner side. The lathe tool holder (4) is provided with several of them. The top of each of the three mounting platforms (7) is provided with several sliding grooves (8) at equal intervals. The inner side of each of the sliding grooves (8) is connected to a T-shaped block (9) in a horizontal sliding manner. The lathe tool holder (4) is fixedly connected to the top of the T-shaped block (9). The side wall of each lathe tool holder (4) is fixedly connected to a fixing frame (10). A round rod (11) is provided next to the fixing frame (10). The moving platform (2) is provided with a replacement mechanism for adjusting the position of the lathe tool holder (4) before locking it.

2. The multi-tool milling lathe according to claim 1, characterized in that: The tool holder (4) is equipped with different types of turning tools (12), and a return spring (13) is fixedly connected between the inner side of the slide groove (8) and the side wall of the T-block (9).

3. The multi-tool milling lathe according to claim 1, characterized in that: The milling cutter holders (3) are provided in pairs. The top of the moving platform (2) is slidably connected to a conversion plate (14). The milling cutter holders (3) are all fixedly connected to the top of the conversion plate (14). The top of the moving platform (2) is fixedly connected to a side electric telescopic cylinder (15). The output end of the side electric telescopic cylinder (15) is fixedly connected to the side wall of the conversion plate (14). The output end of the milling cutter holders (3) is provided with milling cutters (16) of different models.

4. The multi-tool milling lathe according to claim 1, characterized in that: The replacement mechanism includes a lower electric telescopic cylinder (17), a side plate (18) is fixedly connected to the top of the mobile platform (2), the lower electric telescopic cylinder (17) is fixedly connected to the side wall of the side plate (18), a lifting frame (19) is slidably connected to the top of the mobile platform (2), the output end of the lower electric telescopic cylinder (17) passes through the side plate (18) and is fixedly connected to the side wall of the lifting frame (19), an electromagnet (20) is provided on the side wall of the lifting frame (19), a connecting plate (21) is fixedly connected to the top of the electromagnet (20), and several extrusion plates (22) are fixedly connected at equal intervals on the side wall of the connecting plate (21), and each of the several extrusion plates (22) has a slanted groove (36) for extruding the round rod (11) on the side near the lifting frame (19).

5. A multi-tool milling lathe according to claim 1, characterized in that: Each fixed frame (10) has a top frame (23) fixedly connected to its top, and the top frame (23) is made of iron.

6. A multi-tool milling lathe according to claim 4, characterized in that: The lifting frame (19) is rotatably connected to a threaded rod (31), and a drive motor (32) is fixedly connected to the top of the lifting frame (19). The output end of the drive motor (32) passes through the inner side of the lifting frame (19) and is fixedly connected to the top of the threaded rod (31). A lifting block (33) is longitudinally slidably connected to the inner side of the lifting frame (19). The lifting block (33) is fixedly connected to the side wall of the electromagnet (20), and the threaded rod (31) is threadedly connected to the inner side wall of the lifting block (33).

7. A multi-tool milling lathe according to claim 1, characterized in that: An adjusting block (24) is slidably connected to the inner side of the fixed frame (10). A threaded groove (25) is provided at the top of the adjusting block (24). A rectangular groove (27) is provided through the bottom of the threaded groove (25). An insert plate (28) is slidably connected to the inner side of the rectangular groove (27). The round rod (11) is fixedly connected to the side wall of the adjusting block (24).

8. A multi-tool milling lathe according to claim 7, characterized in that: The screw (26) is threaded inside the threaded groove (25). The bottom end of the screw (26) is rotatably connected to the top end of the insert plate (28). Several slots (29) are equidistantly opened at the bottom end of the fixed frame (10). The insert plate (28) is inserted into the inside of one of the slots (29).

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