Turn-milling composite numerical control machine tool

Abstract

The invention discloses a turning and milling composite numerical control machine tool which comprises a workbench, an adjusting assembly is installed at the top of the workbench, a turning assembly is installed at the top of the adjusting assembly, a milling assembly is installed at the top of the adjusting assembly, a lifting air cylinder is fixedly installed at the bottom of the workbench, and the output end of the lifting air cylinder penetrates through the workbench and is fixedly provided with a lifting plate. A workpiece fixing assembly is fixedly installed on one side of the lifting plate, and a control box is fixedly installed at the bottom of the workbench. Cutter switching and position adjustment can be completed through simple operation, tedious disassembly and assembly and repositioning are not needed, machining time and labor cost are greatly saved, meanwhile, the high-precision adjusting function is achieved, the machining requirements of various complex workpieces can be met, and the machining efficiency is greatly improved no matter precision parts are machined or large workpieces are roughly machined. And the machining device has the characteristics of convenience, high efficiency and wide application range, so that the machining device has a wide application prospect in the manufacturing industry.

Description

Technical Field

[0001] The present invention relates to the technical field of numerically controlled machine tools, and particularly to a turning and milling compound numerically controlled machine tool. Background Technique

[0002] With the rapid development of the manufacturing industry, higher requirements are put forward for the machining accuracy, complexity and production efficiency of mechanical parts. In traditional machining methods, turning and milling are usually completed by different machine tools respectively. This not only increases the number of times of clamping and transportation time of parts, resulting in a decrease in machining accuracy due to multiple positioning errors, but also prolongs the production cycle and increases the production cost.

[0003] There are some turning and milling compound machine tools in the current market. Such machine tools have realized the integration of turning and milling functions to a certain extent, making the machining process more efficient. These machine tools can perform two machining methods of turning and milling on the workpiece at the same time, thus improving the production efficiency and machining quality. However, there are still some deficiencies in such turning and milling compound machine tools. Specifically, the turning tool and the milling tool of these machine tools cannot be conveniently interchanged, resulting in complex process exchanges during machining, increasing the labor intensity of workers, and at the same time affecting the production efficiency. In addition, the complexity of the process exchange may also lead to a decrease in the positioning accuracy of the workpiece, thus affecting the final machining quality and the balance of the production process. Summary of the Invention

[0004] The purpose of the present invention is to provide a turning and milling compound numerically controlled machine tool to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A turning and milling compound numerically controlled machine tool, including a workbench, an adjusting component is installed on the top of the workbench, a turning component is installed on the top of the adjusting component, a milling component is installed on the top of the adjusting component, a lifting cylinder is fixedly installed at the bottom of the workbench, the output end of the lifting cylinder penetrates through the workbench and is fixedly installed with a lifting plate, a workpiece fixing component is fixedly installed on one side of the lifting plate, and a control box is fixedly installed at the bottom of the workbench.

[0006] Preferably, the adjusting assembly includes a first adjusting seat, a second adjusting seat and a third adjusting seat. The second adjusting seat is slidably mounted on the top of the first adjusting seat, and the third adjusting seat is slidably mounted on the top of the second adjusting seat. A second moving groove is formed in the top of the first adjusting seat. A second fixing seat is fixedly mounted on one side of the first adjusting seat. A second adjusting motor is fixedly mounted on the side of the second fixing seat away from the first adjusting seat. An output end of the second adjusting motor is fixedly mounted with a second adjusting threaded rod. The second adjusting threaded rod is located inside the second moving groove. A second threaded hole block is fixedly mounted on the bottom of the second adjusting seat. A first fixing seat is fixedly mounted on one side of the second adjusting seat. A first adjusting motor is fixedly mounted at one end of the first fixing seat away from the second adjusting seat. An output end of the first adjusting motor is fixedly mounted with a first adjusting threaded rod. A first moving groove is formed in the top of the second adjusting seat. A first threaded hole block is fixedly mounted on the bottom of the third adjusting seat. An installation plate is fixedly mounted on the top of the third adjusting seat.

[0007] Preferably, the second threaded hole block is slidably mounted inside the second moving groove, and the second threaded hole block is threadedly connected to the outside of the second adjusting threaded rod. The first threaded hole block is slidably mounted inside the first moving groove, and the first threaded hole block is threadedly connected to the outside of the first adjusting threaded rod.

[0008] Preferably, the milling component includes a first driving motor. An output end of the first driving motor is fixedly mounted with a mounting seat. A milling cutter is mounted inside the mounting seat through bolts. The first driving motor is fixedly mounted on the top of the mounting plate.

[0009] Preferably, the turning component includes a moving seat and a first moving groove. An adjusting cylinder is fixedly mounted on one side of the moving seat. A sliding seat is fixedly mounted on the bottom of the moving seat. A sliding rail is fixedly mounted on the top of the first moving groove. The sliding seat is slidably mounted on the outside of the sliding rail. Two mounting grooves are formed inside the moving seat. Turning tools are mounted inside both of the two mounting grooves.

[0010] Preferably, bottoms of both the adjusting cylinder and the support plate are fixedly connected to the top of the mounting plate. A mounting bolt is threadedly connected to the top of the moving seat. The mounting grooves are located below the mounting bolt.

[0011] Preferably, the workpiece fixing component includes a lifting plate and a protective shell. A plurality of connecting rods are fixedly mounted on one side of the protective shell. A second driving motor is fixedly mounted inside the protective shell. A rotating rod is rotatably mounted at one end of the protective shell away from the connecting rods. A workpiece fixing seat is sleeved on the outside of the rotating rod. A fixing nut is fixedly mounted at one end of the workpiece fixing seat.

[0012] Preferably, the fixing nut is threadedly connected to the outside of the rotating rod. One end of the connecting rod away from the protective shell is fixedly connected to one side of the lifting plate. The output end of the second driving motor is fixedly connected to one end of the rotating rod. The bottom of the lifting plate is fixedly connected to the output end of the lifting cylinder. A support frame is fixedly installed at the bottom of the workbench.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The tool switching and position adjustment can be completed through simple operations, without cumbersome disassembly, installation and repositioning, greatly saving processing time and labor costs. At the same time, it has a high-precision adjustment function and can meet the processing requirements of various complex workpieces. Whether it is the processing of precision parts or the rough machining of large workpieces, it can easily cope with them. The characteristics of being convenient, efficient and widely applicable make this processing device have a broad application prospect in the manufacturing industry.

[0014] The workpiece to be processed is fixed by the workpiece fixing seat, which can ensure that the workpiece remains absolutely stable during the processing process and will not be displaced due to vibration or external force during the processing. In addition, the height of the lifting plate can be adjusted by the provided lifting cylinder, thereby adjusting the height of the protective shell and then adjusting the height of the workpiece. Through the accurately adapted workpiece fixing seat, the efficient and stable rotation drive, and the flexible and convenient height adjustment, it provides comprehensive stable guarantee and processing support for the workpiece to be processed. No matter what shape and processing requirements the workpiece has, this system can easily cope with it to ensure the efficiency, accuracy and safety of the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional external structure schematic diagram of the present invention.

[0016] Figure 2 It is a bottom three-dimensional structure schematic diagram of the present invention.

[0017] Figure 3 It is a three-dimensional structure schematic diagram of the adjustment component of the present invention.

[0018] Figure 4 It is a three-dimensional structure schematic diagram of the adjustment component of the present invention from another perspective.

[0019] Figure 5 It is a three-dimensional structure schematic diagram of the adjustment component of the present invention from another perspective.

[0020] Figure 6 It is a three-dimensional structure schematic diagram of the workpiece fixing component of the present invention.

[0021] Figure 7 It is a partial three-dimensional structure schematic diagram of the present invention.

[0022] In the figure: 1, workbench; 2, first adjusting seat; 3, first fixing seat; 4, first adjusting threaded rod; 5, first adjusting motor; 6, adjusting cylinder; 7, mounting plate; 8, second adjusting threaded rod; 9, second fixing seat; 10, second adjusting motor; 11, mounting groove; 12, moving seat; 13, turning tool; 14, mounting bolt; 15, fixing nut; 16, workpiece fixing seat; 17, rotating rod; 18, protective housing; 19, lifting plate; 20, milling cutter; 21, support frame; 22, mounting seat; 23, first driving motor; 24, second moving groove; 25, lifting cylinder; 26, control box; 27, second driving motor; 28, connecting rod; 29, second adjusting seat; 30, second threaded hole block; 31, first threaded hole block; 32, slide rail; 33, sliding seat; 34, support plate; 35, first moving groove; 36, third adjusting seat. Detailed implementation manners

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-7, the present invention provides a technical solution: a turning-milling compound numerical control machine tool, which includes a workbench 1. An adjustment component is installed on the top of the workbench 1. A turning component is installed on the top of the adjustment component, and a milling component is installed on the top of the adjustment component. A lifting cylinder 25 is fixedly installed at the bottom of the workbench 1. The output end of the lifting cylinder 25 penetrates through the workbench 1 and is fixedly installed with a lifting plate 19. A workpiece fixing component is fixedly installed on one side of the lifting plate 19. A control box 26 is fixedly installed at the bottom of the workbench 1. The adjustment component includes an adjustment seat one 2, an adjustment seat two 29, and an adjustment seat three 36. The adjustment seat two 29 is slidably installed on the top of the adjustment seat one 2, and the adjustment seat three 36 is slidably installed on the top of the adjustment seat two 29. A moving groove two 24 is opened on the top of the adjustment seat one 2. A fixing seat two 9 is fixedly installed on one side of the adjustment seat one 2. An adjustment motor two 10 is fixedly installed on the side of the fixing seat two 9 away from the adjustment seat one 2. The output end of the adjustment motor two 10 is fixedly installed with an adjustment screw rod two 8. The adjustment screw rod two 8 is located inside the moving groove two 24. A threaded hole block two 30 is fixedly installed at the bottom of the adjustment seat two 29. A fixing seat one 3 is fixedly installed on one side of the adjustment seat two 29. An adjustment motor one 5 is fixedly installed at the end of the fixing seat one 3 away from the adjustment seat two 29. The output end of the adjustment motor one 5 is fixedly installed with an adjustment screw rod one 4. A moving groove one 35 is opened on the top of the adjustment seat two 29. A threaded hole block one 31 is fixedly installed at the bottom of the adjustment seat three 36. An installation plate 7 is fixedly installed on the top of the adjustment seat three 36. The threaded hole block two 30 is slidably installed inside the moving groove two 24, and the threaded hole block two 30 is threadedly connected to the outside of the adjustment screw rod two 8. The threaded hole block one 31 is slidably installed inside the moving groove one 35, and the threaded hole block one 31 is threadedly connected to the outside of the adjustment screw rod one 4. The milling component includes a driving motor one 23. The output end of the driving motor one 23 is fixedly installed with an installation seat 22. A milling cutter 20 is installed inside the installation seat 22 through bolts. The driving motor one 23 is fixedly installed on the top of the installation plate 7. The turning component includes a moving seat 12 and a moving groove one 35. An adjustment cylinder 6 is fixedly installed on one side of the moving seat 12. A sliding seat 33 is fixedly installed at the bottom of the moving seat 12. A slide rail 32 is fixedly installed on the top of the moving groove one 35. The sliding seat 33 is slidably installed on the outside of the slide rail 32. Two installation grooves 11 are opened inside the moving seat 12. Turning tools 13 are installed inside both of the two installation grooves 11. The bottoms of the adjustment cylinder 6 and the support plate 34 are both fixedly connected to the top of the installation plate 7. An installation bolt 14 is threadedly connected to the top of the moving seat 12. The installation grooves 11 are located below the installation bolt 14.

[0025] Working principle of the above technical solution: After connecting to an external power supply, the workpiece to be processed is fixed by the workpiece fixing component. When milling the workpiece, the adjusting cylinder 6 can be started, and the output end of the adjusting cylinder 6 drives the moving seat 12 to move outside the slide rail 32 on the top support plate 34 of the mounting plate 7 through the slide block 33 at the bottom, so as to drive the turning tool 13 installed in the installation groove 11 inside the moving seat 12 to move away from the workpiece, making the milling cutter 20 closer to the workpiece than the turning tool 13. Then, the relative position between the milling cutter 20 and the workpiece can be adjusted through the adjusting component. By starting the first adjusting motor 5, the output end of the first adjusting motor 5 can drive the first adjusting threaded rod 4 to rotate, so that the first threaded hole block 31 moves inside the first moving groove 35, and then the third adjusting seat 36 moves on the top of the second adjusting seat 29, thereby adjusting the longitudinal position of the milling cutter 20 and the workpiece to be processed. By starting the second adjusting motor 10, the output end of the second adjusting motor 10 can drive the second adjusting threaded rod 8 to rotate, so that the second threaded hole block 30 moves inside the second moving groove 24, and then the second adjusting seat 29 moves on the top of the first adjusting seat 2, thereby adjusting the transverse position of the milling cutter 20 and the workpiece to be processed. When turning the workpiece, the adjusting cylinder 6 can be started, and the output end of the adjusting cylinder 6 drives the moving seat 12 to move outside the slide rail 32 on the top support plate 34 of the mounting plate 7 through the slide block 33 at the bottom, so as to drive the turning tool 13 installed in the installation groove 11 inside the moving seat 12 to move closer to the workpiece, making the turning tool 13 closer to the workpiece than the milling cutter 20. Then, the relative position between the turning tool 13 and the workpiece can be adjusted through the adjusting component. By starting the first adjusting motor 5, the output end of the first adjusting motor 5 can drive the first adjusting threaded rod 4 to rotate, so that the first threaded hole block 31 moves inside the first moving groove 35, and then the third adjusting seat 36 moves on the top of the second adjusting seat 29, thereby adjusting the longitudinal position of the turning tool 13 and the workpiece to be processed. By starting the second adjusting motor 10, the output end of the second adjusting motor 10 can drive the second adjusting threaded rod 8 to rotate, so that the second threaded hole block 30 moves inside the second moving groove 24, and then the second adjusting seat 29 moves on the top of the first adjusting seat 2, thereby adjusting the transverse position of the turning tool 13 and the workpiece to be processed. This facilitates the replacement of turning and milling operations. The switching of the tool and the adjustment of the position can be completed through simple operations, without cumbersome disassembly, installation, and repositioning, greatly saving processing time and labor costs. At the same time, it has a high-precision adjustment function and can meet the processing requirements of various complex workpieces. Whether it is the processing of precision parts or the rough machining of large workpieces, it can easily handle them. This convenient, efficient, and widely applicable feature makes this processing device have a broad application prospect in the manufacturing industry.

[0026] In another embodiment, as Figures 1-7The workpiece fixing assembly shown includes a lifting plate 19 and a protective shell 18. A plurality of connecting rods 28 are fixedly installed on one side of the protective shell 18. A second driving motor 27 is fixedly installed inside the protective shell 18. A rotating rod 17 is rotatably installed at one end of the protective shell 18 away from the connecting rods 28. A workpiece fixing seat 16 is sleeved on the outer side of the rotating rod 17. A fixing nut 15 is fixedly installed at one end of the workpiece fixing seat 16. The fixing nut 15 is threadedly connected to the outer side of the rotating rod 17. One end of the connecting rod 28 away from the protective shell 18 is fixedly connected to one side of the lifting plate 19. The output end of the second driving motor 27 is fixedly connected to one end of the rotating rod 17. The bottom of the lifting plate 19 is fixedly connected to the output end of the lifting cylinder 25. A support frame 21 is fixedly installed at the bottom of the workbench 1.

[0027] According to the shape of the workpiece to be processed, a suitable workpiece fixing seat 16 can be sleeved on the outer side of the rotating rod 17, and the fixing nut 15 can be threadedly connected to the outer side of the rotating rod 17, so as to fix the workpiece fixing seat 16 on the outer side of the rotating rod 17. Then, the workpiece to be processed can be fixed through the workpiece fixing seat 16, which can ensure that the workpiece remains absolutely stable during the processing and will not be displaced due to vibration or external force during the processing. After that, the second driving motor 27 can be started, and the output end of the second driving motor 27 can drive the rotating rod 17 to rotate, so as to drive the workpiece to rotate, which is convenient for subsequent processing of the workpiece. In addition, the height of the lifting plate 19 can be adjusted through the provided lifting cylinder 25, so as to adjust the height of the protective shell 18 and thus adjust the height of the workpiece. Through the precisely adapted workpiece fixing seat, the efficient and stable rotation drive, and the flexible and convenient height adjustment, it provides all-round stable guarantee and processing support for the workpiece to be processed. No matter what shape and processing requirements the workpiece has, this system can easily handle it to ensure the high efficiency, precision and safety of the processing process.

[0028] Working principle: After connecting to an external power supply, the workpiece to be processed is fixed by the workpiece fixing component. According to the shape of the workpiece to be processed, a suitable workpiece fixing seat 16 can be sleeved and installed on the outside of the rotating rod 17, and the fixing nut 15 is threadedly connected to the outside of the rotating rod 17, so as to fix the workpiece fixing seat 16 on the outside of the rotating rod 17. Then, the workpiece to be processed is fixed by the workpiece fixing seat 16, which can ensure that the workpiece remains absolutely stable during the processing and will not be displaced due to vibration or external force during the processing. After that, the driving motor two 27 can be started, and the output end of the driving motor two 27 can drive the rotating rod 17 to rotate, so as to drive the workpiece to rotate, which is convenient for subsequent processing of the workpiece. In addition, the height of the lifting plate 19 can be adjusted by the set lifting cylinder 25, so as to adjust the height of the protective shell 18, and thus adjust the height of the workpiece. Through the precisely adapted workpiece fixing seat, the highly efficient and stable rotation drive, and the flexible and convenient height adjustment, a comprehensive stable guarantee and processing support are provided for the workpiece to be processed. No matter what shape and processing requirements the workpiece has, this system can easily handle it to ensure the high efficiency, precision and safety of the processing process. When milling the workpiece, the adjusting cylinder 6 can be started, and the output end of the adjusting cylinder 6 drives the moving seat 12 to move on the outside of the slide rail 32 on the top of the support plate 34 on the top of the mounting plate 7 through the slide seat 33 at the bottom, so as to carry the turning tool 13 installed in the installation groove 11 inside the moving seat 12 and move away from the workpiece, so that the milling cutter 20 is closer to the workpiece than the turning tool 13. After that, the relative position between the milling cutter 20 and the workpiece can be adjusted through the adjusting component. By starting the adjusting motor one 5, the output end of the adjusting motor one 5 can drive the adjusting screw rod one 4 to rotate, so that the threaded hole block one 31 moves inside the moving groove one 35, so that the adjusting seat three 36 moves on the top of the adjusting seat two 29, so as to adjust the longitudinal position of the milling cutter 20 and the workpiece to be processed. By starting the adjusting motor two 10, the output end of the adjusting motor two 10 can drive the adjusting screw rod two 8 to rotate, so that the threaded hole block two 30 moves inside the moving groove two 24, so that the adjusting seat two 29 moves on the top of the adjusting seat one 2, so as to adjust the transverse position of the milling cutter 20 and the workpiece to be processed. When turning the workpiece, the adjusting cylinder 6 can be started, and the output end of the adjusting cylinder 6 drives the moving seat 12 to move on the outside of the slide rail 32 on the top of the support plate 34 on the top of the mounting plate 7 through the slide seat 33 at the bottom, so as to carry the turning tool 13 installed in the installation groove 11 inside the moving seat 12 and move closer to the workpiece, so that the turning tool 13 is closer to the workpiece than the milling cutter 20. After that, the relative position between the turning tool 13 and the workpiece can be adjusted through the adjusting component. By starting the adjusting motor one 5, the output end of the adjusting motor one 5 can drive the adjusting screw rod one 4 to rotate, so that the threaded hole block one 31 moves inside the moving groove one 35,Thus, the adjusting seat III 36 moves on the top of the adjusting seat II 29, so as to adjust the longitudinal position of the turning tool 13 and the workpiece to be machined. By starting the adjusting motor II 10, the output end of the adjusting motor II 10 can drive the adjusting screw rod II 8 to rotate, so that the threaded hole block II 30 moves inside the moving groove II 24, and then the adjusting seat II 29 moves on the top of the adjusting seat I 2, thereby adjusting the transverse position of the turning tool 13 and the workpiece to be machined, facilitating the replacement of turning and milling operations. The tool switching and position adjustment can be completed through simple operations, without cumbersome disassembly, installation and repositioning, greatly saving the processing time and labor costs. At the same time, it has a high-precision adjustment function and can meet the processing requirements of various complex workpieces. Whether it is the processing of precision parts or the rough machining of large workpieces, it can be easily handled. This convenient, efficient and widely applicable feature enables this processing device to have a broad application prospect in the manufacturing industry.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turning-milling compound numerical control machine tool, comprising a workbench (1), characterized in that: A regulating component is installed on the top of the workbench (1), a lathe worker component is installed on the top of the regulating component, a milling worker component is installed on the top of the regulating component, a lifting cylinder (25) is fixedly installed at the bottom of the workbench (1), the output end of the lifting cylinder (25) penetrates through the workbench (1) and is fixedly installed with a lifting plate (19), a workpiece fixing component is fixedly installed on one side of the lifting plate (19), and a control box (26) is fixedly installed at the bottom of the workbench (1).

2. The milling-turning compound numerical control machine tool according to claim 1, characterized in that: The regulating component includes a first regulating seat (2), a second regulating seat (29) and a third regulating seat (36). The second regulating seat (29) is slidably installed on the top of the first regulating seat (2), the third regulating seat (36) is slidably installed on the top of the second regulating seat (29). A second moving groove (24) is opened on the top of the first regulating seat (2). A second fixing seat (9) is fixedly installed on one side of the first regulating seat (2). A second regulating motor (10) is fixedly installed on the side of the second fixing seat (9) away from the first regulating seat (2). The output end of the second regulating motor (10) is fixedly installed with a second regulating threaded rod (8). The second regulating threaded rod (8) is located inside the second moving groove (24). A second threaded hole block (30) is fixedly installed at the bottom of the second regulating seat (29). A first fixing seat (3) is fixedly installed on one side of the second regulating seat (29). A first regulating motor (5) is fixedly installed at the end of the first fixing seat (3) away from the second regulating seat (29). The output end of the first regulating motor (5) is fixedly installed with a first regulating threaded rod (4). A first moving groove (35) is opened on the top of the second regulating seat (29). A first threaded hole block (31) is fixedly installed at the bottom of the third regulating seat (36). An installation plate (7) is fixedly installed on the top of the third regulating seat (36).

3. The milling-turning compound numerical control machine tool according to claim 2, characterized in that: The second threaded hole block (30) is slidably installed inside the second moving groove (24), and the second threaded hole block (30) is threadedly connected to the outside of the second regulating threaded rod (8). The first threaded hole block (31) is slidably installed inside the first moving groove (35), and the first threaded hole block (31) is threadedly connected to the outside of the first regulating threaded rod (4).

4. The turn-mill compound CNC machine tool according to claim 3, characterized in that: The milling worker component includes a first driving motor (23). The output end of the first driving motor (23) is fixedly installed with an installation seat (22). A milling cutter (20) is installed inside the installation seat (22) through bolts. The first driving motor (23) is fixedly installed on the top of the installation plate (7).

5. The milling-turning compound numerical control machine tool according to claim 4, characterized in that: The lathe worker component includes a moving seat (12) and a first moving groove (35). A regulating cylinder (6) is fixedly installed on one side of the moving seat (12). A sliding seat (33) is fixedly installed at the bottom of the moving seat (12). A slide rail (32) is fixedly installed on the top of the first moving groove (35). The sliding seat (33) is slidably installed on the outside of the slide rail (32). Two installation grooves (11) are opened inside the moving seat (12). Turning tools (13) are installed inside both of the two installation grooves (11).

6. A turning-milling compound CNC machine tool according to claim 5, characterized in that: The bottom of the adjusting cylinder (6) and the support plate (34) are both fixedly connected to the top of the mounting plate (7). The top of the moving seat (12) is threadedly connected with a mounting bolt (14), and the mounting groove (11) is located below the mounting bolt (14).

7. A turning-milling compound CNC machine tool according to claim 6, characterized in that: The workpiece fixing assembly includes a lifting plate (19) and a protective shell (18). A plurality of connecting rods (28) are fixedly installed on one side of the protective shell (18). A second driving motor (27) is fixedly installed inside the protective shell (18). A rotating rod (17) is rotatably installed at one end of the protective shell (18) away from the connecting rod (28). A workpiece fixing seat (16) is sleeved on the outer side of the rotating rod (17). One end of the workpiece fixing seat (16) is fixedly installed with a fixing nut (15).

8. A turning-milling compound numerical control machine tool according to claim 7, characterized in that: The fixing nut (15) is threadedly connected to the outer side of the rotating rod (17). One end of the connecting rod (28) away from the protective shell (18) is fixedly connected to one side of the lifting plate (19). The output end of the second driving motor (27) is fixedly connected to one end of the rotating rod (17). The bottom of the lifting plate (19) is fixedly connected to the output end of the lifting cylinder (25). A support frame (21) is fixedly installed at the bottom of the workbench (1).

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