High-precision machining lathe

Abstract

The utility model relates to the field of lathes, in particular to a high-precision machining lathe which comprises a box body, a clamp assembly, a machining assembly and a positioning assembly. The clamp assembly used for ensuring correct positioning of a workpiece and providing high-precision rotation is installed on one side in the box body, the machining assembly used for providing precise movement for a cutter and providing power for a drill bit is installed in the box body, and the positioning assembly used for providing precise positioning guide for the cutter is installed at the top end in the box body. The two sets of V-shaped guide rails are symmetrically arranged, the first-stage sliding table and the second-stage sliding table are linearly installed on the two sets of V-shaped guide rails, the multiple sets of supporting columns are linearly installed at the bottom ends of the V-shaped guide rails, the positioning assembly provides an accurate reference positioning point for a tool or a workpiece, and after the tool is replaced or the workpiece is clamped, the tool or the workpiece can be rapidly positioned to a preset coordinate position. The positioning error is reduced, the adjusting time is shortened, and the tool can be accurately positioned to the machining position of the workpiece through cooperation of the V-shaped guide rail, the sliding table and the tool mounting table.

Description

Technical Field

[0001] The utility model relates to the field of lathes, in particular to a high-precision processing lathe. Background Art

[0002] A lathe is a machine tool used for metal processing. It mainly cuts the workpiece by combining the rotational motion of the workpiece with the linear or curved motion of the tool to achieve the required shape, size and precision requirements. It can process various rotating parts such as shafts, discs, sleeves, etc., and is one of the most basic and commonly used equipment in the machinery manufacturing industry.

[0003] Existing processing machine tools still use traditional positioning methods, such as linear motion positioning using a screw-nut pair or angular positioning through a graduated disk. Although these positioning methods can meet the requirements of ordinary processing to a certain extent, they have obvious limitations in high-precision positioning. The positioning accuracy of the screw-nut pair is limited by factors such as the screw pitch error, nut clearance, and thread wear. Even if a closed-loop control system and a high-precision encoder are used for position feedback, it is still difficult to achieve nanometer-level or even higher-precision positioning due to the resolution and measurement errors of the system. The positioning accuracy of the graduated disk is affected by factors such as its own manufacturing accuracy, the clearance of the dividing mechanism, and the reading error. When performing multi-station processing or operations requiring precise angular positioning, positioning deviations may occur, affecting the processing accuracy and consistency of product quality.

[0004] Therefore, in view of the limitations of the traditional positioning methods of the above-mentioned existing machine tools in high-precision positioning, the screw-nut pair is restricted by pitch error, nut clearance and thread wear, and the dividing plate is prone to deviations in multi-station or precise angle positioning due to its own manufacturing accuracy, dividing mechanism clearance and reading error, which affects the processing accuracy and product quality consistency. A high-precision processing lathe can be designed to emit a high-precision laser beam through the laser locator in the positioning component to provide a precise reference positioning point for the tool or workpiece. After replacing the tool or clamping the workpiece, it can be quickly positioned to the preset coordinate position, reducing positioning error and adjustment time. The laser displacement sensors at the four corners detect the relative displacement between the tool or workpiece and the positioning component in real time, and timely capture the position changes caused by cutting force, vibration and other factors during the processing process, and feed back to the control system for compensation adjustment to ensure the stability of processing dimensional accuracy. For example, during long-term continuous processing, the position changes caused by tool wear can be monitored in real time. Utility Model Content

[0005] In order to overcome the limitations of traditional positioning methods of existing machine tools in high-precision positioning, the screw-nut pair is restricted by pitch error, nut clearance and thread wear, and the dividing plate is prone to deviations during multi-station or precise angle positioning due to its own manufacturing accuracy, dividing mechanism clearance and reading error, affecting the processing accuracy and product quality consistency.

[0006] The technical solution of the utility model is: a high-precision machining lathe, including a box body, a fixture assembly, a machining assembly and a positioning assembly; a fixture assembly for ensuring the correct positioning of the workpiece and providing high-precision rotation is installed on one side of the interior of the box body, a machining assembly for providing precise movement for the tool and power for the drill bit is installed inside the box body, a positioning assembly for providing precise positioning guidance for the tool is installed on the top of the interior of the box body, the fixture assembly includes a V-shaped guide rail, a support column, a primary sliding table, a tool mounting table, a drill mounting shaft, a linear grating scale, a manual moving handle, a secondary sliding table, a sheath, a drill motor, a hydraulic rod and a hydraulic cylinder; the V-shaped guide rails are symmetrically arranged in two groups, and a primary sliding table and a secondary sliding table are linearly installed on the two groups of V-shaped guide rails, and multiple groups of support columns are linearly installed on the bottom ends of the V-shaped guide rails.

[0007] The V-shaped guide rails are used to guide the tool holder to the workpiece, and the V-shaped guide rails are used to guide the tool holder to the workpiece, so that the tool holder can be positioned accurately at the workpiece processing position. The design of the drill bit mounting shaft enables the machine tool to have a drilling function. During the processing, the position and movement parameters of the tool and drill bit can be flexibly adjusted according to different process requirements to achieve high-precision processing of the workpiece. Whether it is turning, milling or drilling, the fixture assembly can provide stable support and precise control to ensure processing quality and efficiency. The two sets of symmetrically arranged V-shaped guide rails are the first-level sliding table and the second-level sliding table. The movable table provides high-precision guidance. The shape characteristics of the V-shaped guide rail make its contact area with the sliding table more reasonable, which can not only ensure good guidance but also withstand large loads. The positioning component provides an accurate reference positioning point for the tool or workpiece. After changing the tool or clamping the workpiece, it can quickly locate to the preset coordinate position, reducing positioning error and adjustment time. At the same time, the relative displacement between the tool or workpiece and the positioning component is detected in real time. During the processing, the position changes caused by cutting force, vibration and other factors are captured in time, and the feedback is fed back to the control system for compensation adjustment to ensure the stability of the processing dimensional accuracy. For example, the position changes caused by tool wear can be monitored in real time during long-term continuous processing.

[0008] Preferably, a servo drive motor is installed at the bottom of the first-level sliding table and the second-level sliding table. The servo drive motor drives the internal screw to rotate, thereby driving the first-level sliding table and the second-level sliding table to move precisely on the guide rail. The first-level sliding table and the second-level sliding table are both symmetrically provided with sliding grooves.

[0009] Preferably, a tool mounting platform is installed on the top of the first-level sliding platform, and a servo drive motor located in the slide groove of the first-level sliding platform is symmetrically installed at the bottom of the tool mounting platform. The servo drive motor drives the tool mounting platform to move precisely on the slide groove of the first-level sliding platform. Linear grating rulers are installed on both sides of the tool mounting platform, and manual moving handles are installed on one side of the two sets of servo drive motors at the bottom of the tool mounting platform.

[0010] Preferably, a hydraulic cylinder is installed on the top of the secondary sliding table, and a servo drive motor located in the slide groove of the secondary sliding table is symmetrically installed on the bottom of the hydraulic cylinder. The servo drive motor drives the hydraulic cylinder to move precisely on the slide groove of the secondary sliding table. A sheath is installed on the top of the hydraulic cylinder, and a hydraulic rod is embedded in the top of the sheath. A drill mounting shaft is installed through the center of the hydraulic rod, and a drill motor is installed on one end of the drill mounting shaft located on the hydraulic rod.

[0011] Preferably, a first-level slide groove for sliding the protective door is provided on the outer side of the top of the box body, two sets of protective doors are installed on the first-level slide groove, a control console is installed at the front end of one set of protective doors, a push-pull handle is installed at the front end of the protective door near one side edge, and observation windows are provided on the protective doors. A second-level slide groove is symmetrically provided at the top of the inside of the box body.

[0012] Preferably, a laser locator is installed at the center of the sliding mounting platform, a power supply is installed on one side of the laser locator inside the sliding mounting platform, laser displacement sensors are installed at the corners around the sliding mounting platform, and two sets of servo drive motors are symmetrically installed on the top of the sliding mounting platform. The servo drive motors are installed in the secondary slide grooves, and the servo drive motors drive the sliding mounting platform to move precisely on the secondary slide grooves of the box.

[0013] Preferably, the fixture assembly includes a headstock, a main motor, a main shaft and a four-claw turntable; the main shaft is installed through the center of one side of the headstock, the four-claw turntable is installed on the top of the main shaft, the main motor is installed on the outside of the box corresponding to the main shaft, and the main shaft passes through the box and is connected to the main motor.

[0014] Beneficial effects of the utility model:

[0015] 1. In the traditional positioning method of existing machine tools, the positioning accuracy of the screw-nut pair is limited by factors such as pitch error, nut clearance and thread wear. Even with closed-loop control and high-precision encoders, it is difficult to achieve nanometer-level and higher precision positioning; the positioning accuracy of the indexing plate is affected by its own manufacturing accuracy, indexing mechanism clearance and reading error. Deviations are prone to occur during multi-station or precise angle positioning, affecting processing accuracy and product quality consistency. The combination of V-shaped guide rails, high-precision servo drive motors, and screws, combined with real-time feedback from linear grating scales, achieves high-precision positioning of tools and workpieces in multiple dimensions, with positioning accuracy far exceeding that of traditional wire guides. For example, in actual processing, for parts processing with micron or even nanometer precision requirements, the relative position of the tool and the workpiece can be accurately controlled to ensure processing accuracy. The application of laser locators and laser displacement sensors provides more accurate positioning and displacement monitoring for the tool and workpiece. The laser positioning accuracy is not affected by the errors of mechanical components and can achieve higher-precision positioning, solving the accuracy limitations of traditional positioning methods. In multi-station processing, the laser positioning system can quickly and accurately position each station, avoiding the error accumulation of traditional positioning methods such as indexing plates, and improving the consistency of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of a high-precision machining lathe of the utility model;

[0017] Figure 2 Shown is a schematic diagram of the box structure of a high-precision machining lathe of the utility model;

[0018] Figure 3 Shown is a schematic diagram of the machining component structure of a high-precision machining lathe of the present utility model;

[0019] Figure 4 What is shown is a schematic diagram of the positioning component structure of a high-precision machining lathe of the utility model.

[0020] Explanation of the accompanying symbols: 1. Box body; 101. Observation window; 102. Push-pull handle; 103. Control console; 104. Primary slide; 105. Secondary slide; 106. Protective door; 201. Head box; 202. Main motor; 203. Spindle; 204. Four-claw turntable; 301. V-shaped guide rail; 302. Support column; 303. Primary sliding table; 304. Tool mounting table; 305. Drill bit mounting shaft; 306. Linear grating scale; 307. Manual moving handle; 308. Secondary sliding table; 309. Sheath; 310. Drill bit motor; 311. Hydraulic rod; 312. Hydraulic cylinder; 401. Sliding mounting table; 402. Laser displacement sensor; 403. Laser locator; 404. Power supply. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4 The utility model provides an embodiment: a high-precision machining lathe, including a box body 1, a fixture assembly, a machining assembly and a positioning assembly; a fixture assembly for ensuring the correct positioning of the workpiece and providing high-precision rotation is installed on one side of the box body 1, a machining assembly for providing precise movement for the tool and power for the drill is installed inside the box body 1, a positioning assembly for providing precise positioning guidance for the tool is installed on the top of the box body 1, the fixture assembly includes a V-shaped guide rail 301, a support column 302, a first-level sliding table 303, a tool mounting table 304, a drill mounting shaft 305, a straight Linear grating ruler 306, manual moving handle 307, secondary sliding table 308, sheath 309, drill motor 310, hydraulic rod 311 and hydraulic cylinder 312; V-shaped guide rail 301 is symmetrically arranged in two groups, and the first sliding table 303 and the second sliding table 308 are linearly installed on the two groups of V-shaped guide rails 301. The bottom of the V-shaped guide rail 301 is linearly installed with multiple groups of support columns 302. The various parts of the fixture assembly work together to achieve precise clamping of the workpiece and various processing operations. Through the cooperation of the V-shaped guide rail 301, the sliding table and the tool mounting table 304, the tool can be accurately The design of the drill mounting shaft 305 enables the machine tool to be accurately positioned at the processing position of the workpiece. The design of the drill mounting shaft 305 enables the machine tool to have a drilling function. During the processing process, the position and motion parameters of the tool and drill can be flexibly adjusted according to different process requirements to achieve high-precision processing of the workpiece. Whether it is turning, milling or drilling processing operations, the clamping assembly can provide stable support and precise control to ensure processing quality and efficiency. Two sets of symmetrically arranged V-shaped guide rails 301 provide high-precision guidance for the first-level sliding table 303 and the second-level sliding table 308. The shape characteristics of the V-shaped guide rails 301 make the contact area with the sliding table relatively reasonable, which can not only ensure good guidance but also withstand large loads. The positioning assembly provides a precise reference positioning point for the tool or workpiece. After changing the tool or clamping the workpiece, it can quickly locate the preset coordinate position, reducing positioning error and adjustment time. At the same time, the relative displacement between the tool or workpiece and the positioning assembly is detected in real time. During the processing process, position changes caused by factors such as cutting force and vibration are promptly captured and fed back to the control system for compensation adjustment to ensure stable processing dimensional accuracy. For example, position changes caused by tool wear can be monitored in real time during long-term continuous processing.

[0023] See also Figure 3In this embodiment, servo drive motors are installed at the bottom of the first-level sliding table 303 and the second-level sliding table 308. The servo drive motors drive the internal lead screw to rotate, thereby driving the first-level sliding table 303 and the second-level sliding table 308 to move precisely on the guide rail. The first-level sliding table 303 and the second-level sliding table 308 are symmetrically provided with slide grooves. The servo drive motors at the bottom of the first-level sliding table 303 and the second-level sliding table 308 drive the sliding table to move by rotating the lead screw driven by the internal motor. This design can achieve very precise position control. The lead screw has high transmission accuracy, its pitch can be accurately set, and the rotation angle of the motor can also be accurately controlled, so that the moving distance of the sliding table on the guide rail can be accurately calculated and Control, a tool mounting platform 304 is installed on the top of the first-level sliding platform 303, and a servo drive motor located in the slide groove of the first-level sliding platform 303 is symmetrically installed at the bottom of the tool mounting platform 304. The servo drive motor drives the tool mounting platform 304 to move precisely on the slide groove of the first-level sliding platform 303. Linear grating rulers 306 are installed on both sides of the tool mounting platform 304, and a manual moving handle 307 is installed on one side of the two sets of servo drive motors at the bottom of the tool mounting platform 304. The servo drive motor at the bottom of the tool mounting platform 304 drives it to move precisely on the slide groove of the first-level sliding platform 303, so that the tool can achieve high-precision position adjustment in a two-dimensional plane. This precise position control is crucial to machining accuracy.

[0024] See also Figures 1-4In this embodiment, a hydraulic cylinder 312 is installed on the top of the secondary sliding table 308, and a servo drive motor located in the slide groove of the secondary sliding table 308 is symmetrically installed on the bottom of the hydraulic cylinder 312. The servo drive motor drives the hydraulic cylinder 312 to move precisely on the slide groove of the secondary sliding table 308. A sleeve 309 is installed on the top of the hydraulic cylinder 312, and a hydraulic rod 311 is embedded in the top of the sleeve 309. A drill mounting shaft 305 is installed through the center of the hydraulic rod 311. One end of the drill mounting shaft 305 is located on the hydraulic rod 311 and a drill motor 310 is installed. The servo drive motor on the secondary sliding table 308 drives the hydraulic cylinder 312 to move precisely in the slide groove, providing the drill mounting shaft 305 with precise position control capabilities within a specific plane. This precise movement is crucial to the accuracy of drilling processing. 106 is slidably installed through the first-level slide 104, which can form an effective physical barrier during the machine tool processing, isolating the processing area from the operator and the surrounding environment, which can prevent the chips, coolant, sparks and other splashing objects generated during the processing from causing harm to personnel.

[0025] See also Figure 2-Figure 4In this embodiment, a laser locator 403 is installed at the center of the sliding mounting platform 401, and the laser locator 403 adopts LK-G5000. A power supply 404 is installed on one side of the laser locator 403 inside the sliding mounting platform 401. Laser displacement sensors 402 are installed at the corners around the sliding mounting platform 401, and the laser displacement sensor 402 adopts HG-C1030. Two sets of servo drive motors are symmetrically installed on the top of the sliding mounting platform 401. The servo drive motors are installed in the secondary slide 105. The servo drive motors drive the sliding mounting platform 401 to move precisely on the secondary slide 105 of the box 1. The laser locator 403 is installed at the center of the sliding mounting platform 401 and can emit a high-precision laser beam to provide an extremely accurate reference positioning point for the tool or workpiece. During the processing, whether it is Whether it is the initial tool setting operation or the clamping and positioning of the workpiece, the laser locator 403 can quickly and accurately determine its position, so that the relative position accuracy between the tool and the workpiece reaches a very high level. The fixture assembly includes a headstock 201, a main motor 202, a spindle 203 and a four-claw turntable 204; the spindle 203 is installed through the center of one side of the headstock 201, and the four-claw turntable 204 is installed on the top of the spindle 203. The main motor 202 is installed on the outside of the box 1 corresponding to the spindle 203. The spindle 203 passes through the box 1 and is connected to the main motor 202. The four-claw turntable 204 is installed on the top of the spindle 203, providing a reliable clamping platform for the workpiece. Compared with the traditional three-jaw chuck, the four-claw turntable 204 has unique advantages. It can independently adjust the position of each claw and can more flexibly adapt to the clamping needs of workpieces of different shapes and sizes.

[0026] When working, the operator mounts the workpiece to be processed on the four-claw turntable 204, and accurately centers and clamps the workpiece by adjusting the position of the four claws according to the shape of the workpiece and the processing requirements, ensuring that the workpiece is firmly fixed on the top of the spindle 203, providing a stable foundation for subsequent high-precision processing. The operator inputs the processing parameters through the console 103, and according to the needs of the processing task, the control system issues instructions to drive the servo drive motor at the bottom of the first-level sliding table 303 and the second-level sliding table 308. The motor inside the servo drive motor drives the lead screw to rotate, so that the first-level sliding table 303 and the second-level sliding table 308 perform precise linear movement on the V-shaped guide rail 301, and the slide grooves on the first-level sliding table 303 and the second-level sliding table 308 are aligned with the The cooperation of the guide rails ensures the smoothness and straightness of the movement of the sliding table. At the same time, the servo drive motor symmetrically installed at the bottom of the tool mounting table 304 also drives the tool mounting table 304 to move precisely on the slide groove of the first-level sliding table 303 under the command of the control system. The linear grating rulers 306 on both sides of the tool mounting table 304 monitor the position of the tool mounting table 304 in real time and feed back the data to the control system to ensure that its movement accuracy meets the preset requirements. The operator can observe the real-time position information of the tool mounting table 304 through the console and make fine adjustments as needed. For the secondary sliding table 308, the servo drive motor at the bottom end of the hydraulic cylinder 312 at its top drives the hydraulic cylinder 312 to move on the slide groove of the secondary sliding table 308 to adjust the drill bit installation. The horizontal position of the mounting shaft 305, the laser locator 403 at the center of the sliding mounting table 401 emits a laser beam to provide a reference positioning point for the tool and drill bit. During the movement of the tool and drill bit, the laser locator 403 continuously monitors their positions to ensure that they are accurately aligned with the preset processing positions. The laser displacement sensors 402 at the corners of the sliding mounting table 401 also start working to detect the relative displacement between the tool or drill bit and the workpiece in real time. These sensors transmit the detected data to the control system, and the control system further fine-tunes the position of the tool and drill bit based on this data to ensure processing accuracy. The servo drive motor at the top of the sliding mounting table 401 drives the sliding mounting table 401 in the box 1 according to the instructions of the control system. The main motor 202 is started and connected with the main shaft 203 to drive the main shaft 203 to rotate at a preset speed. The main shaft 203 drives the four-claw turntable 204 installed on the top to rotate at high speed together with the workpiece. During the rotation of the workpiece, the tool on the tool mounting table 304 cuts the workpiece according to the instructions of the control system. During the processing, the feed speed and cutting depth of the tool are accurately controlled by the control system according to the preset processing parameters. The linear grating ruler 306 monitors the feed position of the tool in real time to ensure that it cuts according to the predetermined trajectory. When drilling is required,The drill motor 310 starts, rotating the drill bit on the drill mounting shaft 305. The hydraulic cylinder 312 controls the drill bit's feed motion via the hydraulic rod 311, moving it toward the workpiece surface. During the drill feed process, the hydraulic system precisely controls the drill bit's feed speed and pressure based on the hardness of the material being processed and the required drilling depth. When the machining task is completed, the various machining components stop operating according to the control system's instructions. The main motor 202 and drill motor 310 stop rotating, and the tool and drill bit stop moving. The operator then opens the protective door 106 and uses appropriate tools to remove the machined workpiece from the four-jaw turntable 204.

[0027] Through the above steps, the various parts of the fixture assembly work together to achieve precise clamping of the workpiece and various processing operations. Through the cooperation of the V-shaped guide rail 301, the sliding table and the tool mounting table 304, the tool can be accurately positioned at the processing position of the workpiece. The design of the drill mounting shaft 305 enables the machine tool to have a drilling function. During the processing, the position and movement parameters of the tool and drill can be flexibly adjusted according to different process requirements to achieve high-precision processing of the workpiece. Whether it is turning, milling or drilling, the fixture assembly can provide stable support and precise control to ensure processing quality and efficiency. The two sets of symmetrically arranged V-shaped guide rails 301 are the first-level sliding table 3 03 and the secondary sliding table 308 provide high-precision guidance. The shape characteristics of the V-shaped guide rail 301 make its contact area with the sliding table more reasonable, which can not only ensure good guidance but also withstand large loads. The positioning component provides an accurate reference positioning point for the tool or workpiece. After changing the tool or clamping the workpiece, it can quickly locate to the preset coordinate position, reducing positioning error and adjustment time. At the same time, the relative displacement between the tool or workpiece and the positioning component is detected in real time. During the processing, the position changes caused by cutting force, vibration and other factors are captured in time, and the feedback is fed back to the control system for compensation adjustment to ensure the stability of the processing dimensional accuracy. For example, during long-term continuous processing, the position changes caused by tool wear can be monitored in real time.

Claims

1. A high-precision machining lathe, comprising a housing (1); characterized in that: The invention also includes a fixture assembly, a processing assembly and a positioning assembly; a fixture assembly for ensuring the correct positioning of the workpiece and providing high-precision rotation is installed on one side of the box body (1); a processing assembly for providing accurate movement for the tool and power for the drill is installed inside the box body (1); a positioning assembly for providing accurate positioning guidance for the tool is installed on the top of the box body (1); the fixture assembly includes a V-shaped guide rail (301), a support column (302), a first-level sliding table (303), a tool mounting table (304), and a plurality of other components. 4), drill bit mounting shaft (305), linear grating ruler (306), manual moving handle (307), secondary sliding platform (308), sheath (309), drill bit motor (310), hydraulic rod (311) and hydraulic cylinder (312); V-shaped guide rails (301) are symmetrically arranged in two groups, and a primary sliding platform (303) and a secondary sliding platform (308) are linearly installed on the two groups of V-shaped guide rails (301), and multiple groups of support columns (302) are linearly installed at the bottom of the V-shaped guide rails (301).

2. A high-precision machining lathe according to claim 1, characterized in that: The bottom ends of the first sliding platform (303) and the second sliding platform (308) are both equipped with servo drive motors, which drive the internal lead screw to rotate, thereby driving the first sliding platform (303) and the second sliding platform (308) to move precisely on the guide rails. The first sliding platform (303) and the second sliding platform (308) are both symmetrically provided with slide grooves.

3. A high-precision machining lathe according to claim 2, characterized in that: A tool mounting platform (304) is installed on the top of the first-level sliding platform (303), and a servo drive motor located in the slide groove of the first-level sliding platform (303) is symmetrically installed on the bottom of the tool mounting platform (304). The servo drive motor drives the tool mounting platform (304) to move accurately on the slide groove of the first-level sliding platform (303). Linear grating rulers (306) are installed on both sides of the tool mounting platform (304), and manual moving handles (307) are installed on one side of the two sets of servo drive motors at the bottom of the tool mounting platform (304).

4. A high-precision machining lathe according to claim 3, characterized in that: A hydraulic cylinder (312) is installed at the top of the secondary sliding platform (308), and a servo drive motor located in the slide groove of the secondary sliding platform (308) is symmetrically installed at the bottom of the hydraulic cylinder (312). The servo drive motor drives the hydraulic cylinder (312) to move precisely on the slide groove of the secondary sliding platform (308). A sheath (309) is installed at the top of the hydraulic cylinder (312), and a hydraulic rod (311) is embedded in the top of the sheath (309). A drill bit installation shaft (305) is installed through the center of the hydraulic rod (311), and a drill bit motor (310) is installed on one end of the drill bit installation shaft (305) located on the hydraulic rod (311).

5. A high-precision machining lathe according to claim 4, characterized in that: A first-level slide groove (104) for sliding a protective door (106) is provided on the outer side of the top of the box body (1), two groups of protective doors (106) are installed on the first-level slide groove (104), a console (103) is installed at the front end of one group of protective doors (106), a push-pull handle (102) is installed near the edge of one side of the front end of the protective door (106), and an observation window (101) is provided on each of the protective doors (106). A second-level slide groove (105) is symmetrically provided on the top of the interior of the box body (1).

6. A high-precision machining lathe according to claim 5, characterized in that: A laser locator (403) is installed at the center of the sliding mounting platform (401), a power supply (404) is installed on one side of the laser locator (403) inside the sliding mounting platform (401), laser displacement sensors (402) are installed at the corners around the sliding mounting platform (401), two groups of servo drive motors are symmetrically installed on the top of the sliding mounting platform (401), the servo drive motors are installed in the secondary slide groove (105), and the servo drive motors drive the sliding mounting platform (401) to move accurately on the secondary slide groove (105) of the box body (1).

7. The high-precision machining lathe according to claim 1, characterized in that: The clamp assembly comprises a headstock (201), a main motor (202), a main shaft (203) and a four-claw turntable (204); the main shaft (203) is installed through the center of one side of the headstock (201), the four-claw turntable (204) is installed on the top of the main shaft (203), the main motor (202) is installed at the outer side of the box (1) corresponding to the main shaft (203), and the main shaft (203) passes through the box (1) and is connected to the main motor (202).

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