Composite cutting device for precision machining

Abstract

The utility model discloses a compound cutting device for precision machining, which is characterized in that an operator can clamp and release a cutter in an extremely short time through a hydraulic quick-release cutter handle, the machining time is effectively reduced, and the linkage matching of a quick-release limiting groove and a quick-release fixing steel ball ensures that the cutter can be clamped and released in an extremely short time. An operator only needs to simply activate a hydraulic system to achieve quick clamping of a tool, the tool bit and the arc-shaped tool containing groove are clamped and fixed through the hydraulic quick-release tool handle, then the hydraulic quick-release tool handle releases the tool bit and then rises, the disc tool magazine rotates the needed tool bit to the position below the hydraulic quick-release tool handle, and the hydraulic quick-release tool handle falls down to clamp the tool bit. After being firmly clamped, the tool bits and the arc-shaped tool containing grooves are accurately clamped and fixed, the repeated positioning accuracy of tool exchange every time is guaranteed, the machining quality and consistency are effectively improved, meanwhile, due to cooperative work of the hydraulic quick-release tool handle and the disc tool magazine, the tool changing speed is greatly increased, and the non-cutting time is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field, and particularly relates to a composite cutting device for precision machining. Background Technique

[0002] In the modern precision manufacturing industry, the requirements for the machining accuracy and surface quality of workpieces are increasing day by day. Traditional single-function cutting devices are difficult to meet the high-efficiency and high-precision machining requirements of complex parts. When processing such columnar workpieces, multiple clamping and tool changing are often required, which not only increases the machining time but also may introduce additional errors. Therefore, traditional cutting devices can no longer meet the needs of modern manufacturing for high-precision components. Content of the Utility Model

[0003] The purpose of the utility model is to provide a composite cutting device for precision machining to solve the existing problems.

[0004] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] The utility model is a composite cutting device for precision machining, including the workbench. It is characterized in that: a support column is welded on the upper surface of the workbench, a moving motor is bolted on the upper surface of the support column, a support frame is fixedly connected to one side surface of the moving motor, a cutting drive is slidably connected to the lower surface of the upper end of the support frame, a cutting hydraulic column is fixedly connected to the lower surface of the cutting drive, a hydraulic quick-change tool holder is snap-fixed to the lower surface of the cutting hydraulic column. During the tool changing process, the hydraulic quick-release tool holder uses screws, pistons and sleeves to press hydraulic medium into the expansion chamber to generate pressure. This pressure is transmitted to the quick-release fixed steel balls through the quick-release limit groove, so that the hydraulic quick-release tool holder can complete the clamping and release of the tool in an extremely short time, greatly shortening the tool changing time and effectively reducing the machining time. At the same time, the powerful pressure provided by the hydraulic system ensures the stability of the tool during high-speed rotation and cutting, reduces the machining error caused by tool loosening, and improves the machining accuracy and surface quality.

[0006] A tool head is fixedly connected to the lower surface of the hydraulic quick-change tool holder. A double-headed motor is bolted to one side of the support frame. The lower surface of the double-headed motor is fixedly connected to the workbench. A clamping rotating shaft is fixedly connected to one side of the double-headed motor. A clamping worm is rotatably connected to the circumferential surface of the clamping rotating shaft. The clamping worm is rotatably connected to the support frame. A clamping limit ring is threadedly connected to the circumferential surface of the clamping worm. A number of limit fixing columns are hinged to the circumferential surface of the clamping limit ring. One end of the limit fixing column is hinged to a limit sliding block. A rotating fixed clamping disc is slidably connected to one side of the limit sliding block. The coordinated work of the limit clamping disc and the rotating fixed clamping disc improves the utilization rate and production efficiency of the equipment. At the same time, it also realizes the rapid clamping and release of workpieces, reduces the non-processing time, and improves the utilization rate and production efficiency of the equipment. And the stable and reliable clamping state also reduces the need for processing interruption and recalibration, further accelerating the processing process.

[0007] Further, a hydraulic rod is fixedly connected to one side of the support column. One end of the hydraulic rod is rotatably connected to a limit clamping disc. The size and shape of the limit clamping disc are adapted to those of the rotating fixed clamping disc. The combined use of the limit clamping disc and the rotating fixed clamping disc can realize the precise positioning and stable clamping of workpieces. The limit clamping disc is responsible for restricting the degrees of freedom of the workpiece to ensure its position remains unchanged during the processing; the rotating fixed clamping disc further fixes the workpiece through the lateral clamping force. Under the combined action, the workpiece can obtain extremely high positioning accuracy, which is beneficial to ensuring the consistency of processing dimensions and geometric accuracy.

[0008] Further, two moving screws are fixedly connected to one side of the moving motor. One end of each of the two moving screws is rotatably connected to the support frame. A moving chute is provided on the lower surface of the upper end of the support frame. The size and shape of the moving chute are adapted to the cutting drive.

[0009] Further, a sliding groove is provided on the upper surface of the workbench. A side pull door is slidably connected in the sliding groove. An observation window is provided on one side of the side pull door. A pull ring is bolted to one side of the side pull door. The observation window enables the operator to observe the processing process in real time without disturbing the processing environment, which helps to promptly discover and solve potential problems. At the same time, through the observation window, the operator can more intuitively judge whether it is necessary to replace the tool, add cutting fluid or adjust the processing parameters, avoiding unnecessary shutdowns and waiting, and improving the operation efficiency and productivity.

[0010] Further, a waste chute is bolted to one side of the workbench. The waste chute can help collect and guide chips, debris, and other waste generated during the processing, preventing them from scattering inside or around the machine, keeping the processing area clean and safe. Thus, by effectively removing the waste, it reduces the machine failures that may be caused by the accumulation of waste during the processing, ensuring the continuity and efficiency of the processing. A cutting fluid diversion groove is provided on the upper surface of the workbench. A control box is bolted to one side of the workbench. A cutting fluid water tank is bolted to one side of the workbench. One side of the cutting fluid water tank communicates with the waste chute, and a waste filter is engaged at the communication point. A negative pressure water pump is bolted to the upper surface of the cutting fluid water tank.

[0011] Further, one end of the clamping rotating shaft penetrates through the support frame and extends to the double-headed motor. A rotating shaft is fixedly connected to one side of the double-headed motor. A crawler is rotatably connected to the circumferential side of the rotating shaft. A transmission shaft is rotatably connected to the inner wall of the crawler. The transmission shaft penetrates through the support frame and extends to the disc tool magazine. The disc tool magazine enables the present utility model to complete the selection and replacement of tools in a short time, significantly reducing the non-production time and improving the processing efficiency. At the same time, it meets the requirement of the composite cutting device for tool diversity when processing workpieces of different materials and shapes.

[0012] Further, a fixed connection is provided between one end of the transmission shaft and the disc tool magazine. A number of arc-shaped tool placement grooves are provided on one side of the disc tool magazine. The rotation positioning mechanism and the arc-shaped tool placement grooves of the disc tool magazine ensure the high precision of tool replacement, reducing the processing errors caused by inaccurate tool positioning and guaranteeing the processing quality. The size and shape of the arc-shaped tool placement grooves are adapted to the tool heads. Spare tools are engaged on the inner wall of the arc-shaped tool placement grooves. The diversity of the spare tools supports the composite cutting device to handle various processing tasks. Whether it is rough machining, finish machining, or the machining of special materials, it can respond quickly. At the same time, the spare tools ensure the coherence of the processing process, avoiding the production bottlenecks caused by tool replacement and improving the overall production efficiency.

[0013] Further, during the tool change process, through oil suction, oil pressure, the lifting and falling of heavy objects, at this time, the oil drain valve is opened, and the oil body moves downward and is injected into the quick-release limit groove, thereby realizing the quick release and clamping of the tool head. The tool head is clamped and fixed to the arc-shaped tool placement groove through the hydraulic quick-release tool holder. Then, after the hydraulic quick-release tool holder releases the tool head and rises, the disc tool magazine rotates the required tool head under the hydraulic quick-release tool holder. The hydraulic quick-release tool holder falls to clamp the tool head, and after firmly clamping, it is removed from the disc tool magazine for processing. Further, through the precise clamping and fixing of the tool head and the arc-shaped tool placement groove, the repeated positioning accuracy of each tool exchange is ensured, effectively improving the processing quality and consistency. At the same time, the coordinated work of the hydraulic quick-release tool holder and the disc tool magazine realizes the automation of tool exchange, greatly improving the tool change speed, shortening the non-cutting time, and enhancing the overall processing efficiency.

[0014] Further, a cutting fluid nozzle is connected to the pipeline on the lower surface of the cutting hydraulic column. The cutting hydraulic column is connected to the negative pressure water pump through a pipeline. Inside the hydraulic quick-change tool holder, there are quick-release limit grooves and quick-release fixing steel balls. The size and shape of the quick-release limit grooves are adapted to the quick-release fixing steel balls.

[0015] Further, during the cutting process, the waste generated during cutting is flushed into the cutting fluid diversion groove through the cutting fluid nozzle, then flows through the waste chute from the cutting fluid diversion groove, and then the cutting fluid after being filtered by the waste filter flows into the cutting fluid water tank for recycling. Further, the cutting fluid can not only cool and lubricate the tool, reduce the heat accumulation and friction during the cutting process, but also effectively wash away the chips and dust generated during the cutting process, prevent these wastes from accumulating on the surface of the tool and the workpiece, reduce the machining errors caused by the chips, thereby improving the machining accuracy and surface quality, and also avoiding the problems of reduced machining quality and shortened tool life. At the same time, through the guidance of the cutting fluid diversion groove and the waste chute, the waste is discharged from the machining area in an orderly manner, reducing the chips and dust during the cutting process, and the cutting fluid filtered by the waste filter can be recycled, effectively reducing the consumption of the cutting fluid, thereby reducing the production cost.

[0016] The utility model has the following beneficial effects:

[0017] In the utility model, the hydraulic medium in the hydraulic quick-change tool holder is pressed into the expansion chamber to generate pressure. This pressure is transmitted to the quick-release fixing steel balls through the quick-release limit grooves, so that the hydraulic quick-change tool holder can complete the clamping and release of the tool in an extremely short time, greatly shortening the tool change time, effectively reducing the machining time. Moreover, the linkage design of the quick-release limit grooves and the quick-release fixing steel balls enables the operator to quickly clamp the tool by simply activating the hydraulic system without manually tightening or loosening complex clamping mechanisms, reducing the operation difficulty and improving the work efficiency. At the same time, the strong pressure provided by the hydraulic system ensures the stability of the tool during high-speed rotation and cutting, reducing the machining errors caused by tool loosening, and improving the machining accuracy and surface quality.

[0018] In the utility model, the tool head is clamped and fixed with the arc-shaped tool placement groove through the hydraulic quick-change tool holder. Then, after the hydraulic quick-change tool holder releases the tool head and rises, the disc tool magazine rotates the required tool head to the lower part of the hydraulic quick-change tool holder. The hydraulic quick-change tool holder drops to clamp the tool head, and after firmly clamping, it moves out of the disc tool magazine for machining. Further, through the precise clamping and fixing of the tool head and the arc-shaped tool placement groove, the repeat positioning accuracy of each tool change is ensured, effectively improving the machining quality and consistency. At the same time, the coordinated work of the hydraulic quick-change tool holder and the disc tool magazine realizes the automation of tool change, without manual intervention, greatly improving the tool change speed, shortening the non-cutting time, and improving the overall machining efficiency.

[0019] During the cutting process of the present utility model, the waste generated during the cutting process is flushed into the cutting fluid diversion groove through the cutting fluid nozzle, then flows through the waste chute from the cutting fluid diversion groove, and then the cutting fluid after being filtered by the waste filter flows into the cutting fluid water tank for recycling. Among them, the cutting fluid can not only cool and lubricate the cutting tool, reduce the heat accumulation and friction during the cutting process, but also effectively wash away the chips and dust generated during the cutting process, prevent these wastes from accumulating on the surface of the cutting tool and the workpiece, reduce the machining errors caused by the chips, thereby improving the machining accuracy and surface quality, and also avoiding the problems of reduced machining quality and shortened tool life. At the same time, through the guidance of the cutting fluid diversion groove and the waste chute, the waste is discharged from the machining area in an orderly manner, reducing the chips and dust during the cutting process, and the cutting fluid filtered by the waste filter can be re-collected and recycled, effectively reducing the consumption of the cutting fluid, thereby reducing the production cost.

[0020] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a composite cutting device for precision machining;

[0023] Figure 2 It is a top view of the internal structure of a composite cutting device for precision machining;

[0024] Figure 3 It is Figure 2 The sectional view taken along A-A in

[0025] Figure 4 It is Figure 3 The partial enlarged view of a in

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Workbench; 2. Support column; 3. Moving motor; 4. Support frame; 5. Cutting drive; 6. Cutting hydraulic column; 601. Cutting fluid spray head; 7. Hydraulic quick-change tool holder; 8. Tool tip; 9. Double-headed motor; 10. Clamping rotating shaft; 11. Clamping worm; 12. Clamping limit ring; 13. Limit fixing column; 14. Limit sliding block; 15. Rotating fixed clamping disc; 16. Limit turbine; 17. Hand-cranked rotating shaft; 18. Limit clamping disc; 19. Moving screw; 20. Scrap chute; 21. Cutting fluid diversion groove; 22. Control box; 23. Cutting fluid water tank; 24. Scrap filter; 25. Negative pressure water pump; 26. Disc tool magazine; 27. Quick-release limit groove; 28. Quick-release fixing steel ball. Detailed implementation manner

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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.

[0029] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0030] Please refer to Figures 1-4As shown in the figure, the utility model is a composite cutting device for precision machining, including a workbench 1, characterized in that: a support column 2 is welded on the upper surface of the workbench 1, a moving motor 3 is bolted to the upper surface of the support column 2, a support frame 4 is fixedly connected to one side surface of the moving motor 3, a cutting drive 5 is slidably connected to the lower surface of the upper end of the support frame 4, a cutting hydraulic column 6 is fixedly connected to the lower surface of the cutting drive 5, a hydraulic quick-change tool holder 7 is snap-fitted and fixed to the lower surface of the cutting hydraulic column 6. During the tool change process of the hydraulic quick-release tool holder, by using screws, pistons and sleeves, hydraulic medium is pressed into the expansion chamber to generate pressure. This pressure is transmitted to the quick-release fixing steel balls through the quick-release limit groove, so that the hydraulic quick-release tool holder can complete the clamping and release of the tool in an extremely short time, greatly shortening the tool change time and effectively reducing the processing time. Moreover, the linkage design of the quick-release limit groove and the quick-release fixing steel balls enables the operator to quickly clamp the tool by simply activating the hydraulic system without manually tightening or loosening complex clamping mechanisms, reducing the operation difficulty and improving the work efficiency. At the same time, the strong pressure provided by the hydraulic system ensures the stability of the tool during high-speed rotation and cutting, reduces the processing errors caused by tool loosening, and improves the processing accuracy and surface quality.

[0031] A tool head 8 is fixedly connected to the lower surface of the hydraulic quick-change tool holder 7, a double-headed motor 9 is bolted to one side surface of the support frame 4, the lower surface of the double-headed motor 9 is fixedly connected to the workbench 1, a clamping rotating shaft 10 is fixedly connected to one side surface of the double-headed motor 9, a clamping worm 11 is rotatably connected to the circumferential surface of the clamping rotating shaft 10, the clamping worm 11 is rotatably connected to the support frame 4, a clamping limit ring 12 is threadedly connected to the circumferential surface of the clamping worm 11, a number of limit fixing columns 13 are hinged to the circumferential surface of the clamping limit ring 12, a limit sliding block 14 is hinged to one end of the limit fixing column 13, and a rotating fixed clamping disk 15 is slidably connected to one side surface of the limit sliding block 14. The coordinated work of the limit clamping disk 18 and the rotating fixed clamping disk 15 improves the utilization rate and production efficiency of the equipment. At the same time, the stable and reliable clamping state also reduces the need for processing interruption and recalibration, further accelerating the processing process. Through the coordinated work of the limit clamping disk 18 and the rotating fixed clamping disk 15, the workpiece can be quickly clamped and released, reducing the non-processing time, and the stable and reliable clamping state also reduces the need for processing interruption and recalibration. Among them, a limit turbine 16 is meshed and connected to the circumferential surface of the clamping worm 11, the limit turbine 16 is fixedly connected to a hand-crank rotating shaft 17, and one end of the hand-crank rotating shaft 17 is rotatably connected to the support frame 4.

[0032] Among them, a hydraulic rod is fixedly connected to one side surface of the support column 2, and one end of the hydraulic rod is rotatably connected to a limit clamping disc 18. The size and shape of the limit clamping disc 18 are adapted to those of the rotating fixed clamping disc 15. The combined use of the limit clamping disc 18 and the rotating fixed clamping disc 15 can achieve precise positioning and stable clamping of the workpiece. The limit clamping disc 18 is responsible for restricting the degrees of freedom of the workpiece to ensure its position remains unchanged during the machining process; the rotating fixed clamping disc 15 further fixes the workpiece through a lateral clamping force. Under their combined action, the workpiece can obtain extremely high positioning accuracy, which is beneficial to ensuring the consistency of machining dimensions and geometric accuracy.

[0033] Among them, two moving screws 19 are fixedly connected to one side surface of the moving motor 3, and one end of each of the two moving screws 19 is rotatably connected to the support frame 4. A moving chute is provided on the lower surface of the upper end of the support frame 4, and the size and shape of the moving chute are adapted to those of the cutting drive 5.

[0034] Among them, a sliding groove is provided on the upper surface of the workbench 1, and a side pull door is slidably connected in the sliding groove. An observation window is provided on one side surface of the side pull door, and a hand pull ring is bolted to one side surface of the side pull door. The observation window enables the operator to observe the machining process in real time without disturbing the machining environment, ensuring that the machining proceeds as expected. This is extremely important for monitoring tool wear, cutting fluid flow, workpiece positioning, etc., helping to promptly discover and solve potential problems. At the same time, through the observation window, the operator can more intuitively judge whether it is necessary to replace the tool, add cutting fluid or adjust the machining parameters, avoiding unnecessary downtime and waiting, and improving the operation efficiency and productivity.

[0035] Among them, a waste chute 20 is bolted to one side surface of the workbench 1. The waste chute 20 can help collect and guide chips, debris and other waste generated during the machining process, preventing them from scattering inside or around the machine, keeping the machining area clean and safe. Thus, by effectively removing the waste, the machine failures that may be caused by the accumulation of waste during the machining process are reduced, ensuring the continuity and efficiency of the machining process. A cutting fluid diversion groove 21 is provided on the upper surface of the workbench 1, a control box 22 is bolted to one side surface of the workbench 1, a cutting fluid water tank 23 is bolted to one side surface of the workbench 1, one side surface of the cutting fluid water tank 23 communicates with the waste chute 20, a waste filter screen 24 is clamped at the communication point, and a negative pressure water pump 25 is bolted to the upper surface of the cutting fluid water tank 23.

[0036] Among them, one end of the clamping rotating shaft 10 penetrates through the support frame 4 and extends to the double-headed motor 9. A rotating shaft is fixedly connected to one side surface of the double-headed motor 9. A crawler is rotatably connected to the circumferential side surface of the rotating shaft. A transmission shaft is rotatably connected to the inner wall of the crawler. The transmission shaft penetrates through the support frame 4 and extends to the disc tool magazine 26. The disc tool magazine 26 enables the present utility model to complete the selection and replacement of tools within a short time, significantly reducing the non-production time and improving the processing efficiency. At the same time, it meets the requirement of the composite cutting device for tool diversity when processing workpieces of different materials and shapes. One end of the transmission shaft is fixedly connected to the disc tool magazine 26. A plurality of arc-shaped tool slots are provided on one side surface of the disc tool magazine 26. The rotation positioning mechanism and the arc-shaped tool slots of the disc tool magazine 26 ensure the high precision of tool replacement, reduce the processing error caused by inaccurate tool positioning, and guarantee the processing quality. The size and shape of the arc-shaped tool slots are adapted to the tool head 8. Spare tools are clamped in the inner wall of the arc-shaped tool slots. The diversity of the spare tools supports the composite cutting device to handle various processing tasks. Whether it is rough machining, finish machining, or machining of special materials, it can respond quickly. At the same time, the spare tools ensure the continuity of the processing process, avoid the production bottleneck caused by tool replacement, and improve the overall production efficiency.

[0037] Among them, during the tool change process, the tool head 8 is clamped and fixed to the arc-shaped tool slot through a hydraulic quick-release tool holder. Then, after the hydraulic quick-release tool holder releases the tool head 8 and rises, the disc tool magazine 26 rotates the required tool head 8 below the hydraulic quick-release tool holder. The hydraulic quick-release tool holder drops to clamp the tool head 8, and after firmly clamping, it is removed from the disc tool magazine 26 for processing. Further, through the precise clamping and fixing of the tool head 8 and the arc-shaped tool slot, the repeated positioning accuracy of each tool exchange is ensured, effectively improving the processing quality and consistency. At the same time, the coordinated work of the hydraulic quick-release tool holder and the disc tool magazine 26 realizes the automation of tool exchange, without manual intervention, greatly improving the tool change speed, shortening the non-cutting time, and enhancing the overall processing efficiency.

[0038] Among them, a cutting fluid nozzle 601 is connected to the lower surface of the cutting hydraulic column 6 through a pipeline. The cutting hydraulic column 6 is connected to the negative pressure water pump 25 through a pipeline. A quick-release limit groove 27 and a quick-release fixing steel ball 28 are provided inside the hydraulic quick-change tool holder 7. The size and shape of the quick-release limit groove 27 are adapted to the quick-release fixing steel ball 28.

[0039] Among them, during the cutting process, the waste generated during the cutting process is flushed into the cutting fluid diversion groove 21 through the cutting fluid nozzle 601, then flows through the waste chute 20 from the cutting fluid diversion groove 21, and then the cutting fluid after being filtered by the waste filter screen 24 flows into the cutting fluid water tank 23 for recycling. The cutting fluid can not only cool and lubricate the cutting tool, reduce the heat accumulation and friction during the cutting process, but also effectively wash away the chips and dust generated during the cutting process, prevent these wastes from accumulating on the surface of the cutting tool and the workpiece, reduce the machining errors caused by the chips, thereby improving the machining accuracy and surface quality, and also avoiding the problems of reduced machining quality and shortened tool life. At the same time, under the guidance of the cutting fluid diversion groove 21 and the waste chute 20, the waste is discharged from the machining area in an orderly manner, reducing the chips and dust during the cutting process. The cutting fluid filtered by the waste filter screen 24 can be recycled, effectively reducing the consumption of the cutting fluid, thus reducing the production cost.

[0040] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A composite cutting device for precision machining, comprising a workbench (1), characterized in that: A support column (2) is welded on the upper surface of the workbench (1), a mobile motor (3) is bolted to the upper surface of the support column (2), a side of the mobile motor (3) is fixedly connected to a support frame (4), a cutting drive (5) is slidably connected to the lower surface of the upper end of the support frame (4), a cutting hydraulic column (6) is fixedly connected to the lower surface of the cutting drive (5), a hydraulic quick-change tool handle (7) is snap-fitted and fixed to the lower surface of the cutting hydraulic column (6), a tool head (8) is fixedly connected to the lower surface of the hydraulic quick-change tool handle (7), a double-headed motor (9) is bolted to the side of the support frame (4), the lower surface of the double-headed motor (9) is fixedly connected to the workbench (1), and a clamping rotating shaft (1) is fixedly connected to the side of the double-headed motor (9). 0), the clamping rotating shaft (10) is rotatably connected to a clamping worm (11) on the circumferential side surface, the clamping worm (11) is rotatably connected to the support frame (4), the clamping worm (11) is threadedly connected to a clamping limit ring (12) on the circumferential side surface of the clamping limit ring (12), a plurality of limit fixing columns (13) are hingedly connected to the circumferential side surface of the clamping limit ring (12), one end of the limit fixing column (13) is hingedly connected to a limit sliding block (14), one side of the limit sliding block (14) is slidably connected to a rotatably fixed clamping disk (15), the circumferential side surface of the clamping worm (11) is meshingly connected to a limit turbine (16), the limit turbine (16) is fixedly connected to a hand-cranked rotating shaft (17), one end of the hand-cranked rotating shaft (17) is rotatably connected to the support frame (4).

2. A composite cutting device for precision machining according to claim 1, characterized in that: A hydraulic rod is fixedly connected to one side of the support column (2), and one end of the hydraulic rod is rotatably connected to a limited clamping disk (18). The size and shape of the limited clamping disk (18) are compatible with the rotatable fixed clamping disk (15).

3. A composite cutting device for precision machining according to claim 1, characterized in that: Two movable screw rods (19) are fixedly connected to one side of the movable motor (3), and one end of the two movable screw rods (19) is rotatably connected to the support frame (4). A movable slide groove is provided on the lower surface of the upper end of the support frame (4), and the size and shape of the movable slide groove are adapted to the cutting drive (5).

4. A composite cutting device for precision machining according to claim 1, characterized in that: A waste chute (20) is bolted to one side of the workbench (1), a cutting fluid guide groove (21) is provided on the upper surface of the workbench (1), a control box (22) is bolted to one side of the workbench (1), a cutting fluid water tank (23) is bolted to one side of the workbench (1), one side of the cutting fluid water tank (23) is connected to the waste chute (20), a waste filter (24) is engaged at the connection, and a negative pressure water pump (25) is bolted to the upper surface of the cutting fluid water tank (23).

5. The composite cutting device for precision machining according to claim 1, characterized in that: One end of the clamping rotating shaft (10) passes through the support frame (4) and extends to the double-headed motor (9); one side of the double-headed motor (9) is fixedly connected to a rotating shaft; the peripheral side of the rotating shaft is rotatably connected to a crawler; the inner wall of the crawler is rotatably connected to a transmission shaft; the transmission shaft passes through the support frame (4) and extends to the disc tool magazine (26); one end of the transmission shaft is fixedly connected to the disc tool magazine (26); a plurality of arc-shaped tool grooves are provided on one side of the disc tool magazine (26); the size and shape of the arc-shaped tool grooves are adapted to the tool head (8); spare tools are engaged with the inner walls of the arc-shaped tool grooves.

6. A composite cutting device for precision machining according to claim 1, characterized in that: A cutting fluid nozzle (601) is connected to a pipeline on the lower surface of the cutting hydraulic column (6), and a pipeline is connected between the cutting hydraulic column (6) and the negative pressure water pump (25). A quick-release limit groove (27) and a quick-release fixed steel ball (28) are provided inside the hydraulic quick-change tool handle (7), and the size and shape of the quick-release limit groove (27) are adapted to the quick-release fixed steel ball (28).

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