A multi-station adaptive clamping milling and turning machine based on precision compensation

Abstract

This invention relates to the field of milling and turning machine technology, and more particularly to a multi-station adaptive clamping milling and turning machine based on precision compensation. The machine includes a body, a base fixedly connected inside the body, a positioning component fixedly connected to the inner wall of the base's bottom, an airflow seat above the positioning component, and a workstation rotatably connected to one side of the base. The workstation has multiple clamping stations arranged in a ring structure. A protective sleeve is slidably fitted to the inner wall of the workstation at each clamping station, and a push-pull component is rotatably connected to the inner end of the protective sleeve. By setting multiple clamping stations on the workstation, the appropriate clamping station can be quickly switched according to the workpiece specifications and structural type, meeting the differentiated clamping requirements of different workpieces. Simultaneously, after the workstation rotates to change positions, a U-shaped positioning rod accurately locks and positions the workstation, effectively suppressing positional deviations and movement after station rotation. Combined with the precision compensation structure, this further ensures the stability of the machining datum and reduces positioning errors.

Description

Technical Field

[0001] This invention relates to the field of milling and turning machine technology, and in particular to a multi-station adaptive clamping milling and turning machine based on precision compensation. Background Technology

[0002] The milling-turning machine is a precision CNC machine tool that integrates multiple machining processes such as turning, milling, drilling, and tapping. Relying on a high-precision spindle, a power turret, and a CNC control system, it can complete multi-process composite machining of complex parts in a single clamping. With the addition of precision compensation and adaptive clamping structures, it effectively reduces clamping errors, improves machining accuracy and production efficiency. It has a compact structure and a high degree of automation, and is widely used in the batch processing and manufacturing of shafts, discs, and irregularly shaped precision parts.

[0003] The prior art publication CN111975364A provides a milling-turning composite CNC machine tool. It uses a machining table structure to mount a rotating milling cutter head and a fixed turning cutter head, and employs a loading assembly and a three-jaw chuck to clamp the workpiece. Drive components one and two drive the machining table horizontally, adjusting its horizontal position. A third drive component allows for height adjustment of the machining table. By changing the position of the machining table, either the milling cutter head or the turning cutter head can be selected to process the workpiece, effectively improving processing efficiency compared to changing different machine tools.

[0004] Existing technologies use three-jaw chucks to clamp and position workpieces. However, three-jaw chucks have a single clamping method and poor adaptability. They cannot switch to appropriate clamping stations for different specifications and types of workpieces, making it difficult to meet the differentiated clamping needs of irregularly shaped parts, thin-walled parts, and long-shaft workpieces. At the same time, the single-station structure cannot achieve continuous processing of workpieces in rotation. Loading and unloading require machine downtime and waiting, resulting in long clamping times and easy to generate repeated clamping errors, which limits the continuity of processing and production efficiency.

[0005] In summary, the existing technology lacks a technology that allows for switching between multiple clamping stations on milling and turning composite machines. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a multi-station adaptive clamping milling and turning composite machine based on precision compensation.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a multi-station adaptive clamping milling and turning composite machine based on precision compensation, comprising a machine body, a base fixedly connected to the machine body, a positioning component fixedly connected to the inner wall of the bottom end of the base, an airflow seat provided above the positioning component, a station seat rotatably connected to one side of the base, a plurality of clamping stations arranged in a ring structure on the station seat, a protective sleeve slidably fitted on the inner wall of the station seat at the clamping station, and a push-pull component rotatably connected to the inner end of the protective sleeve.

[0008] Preferably, a main spindle motor is fixedly connected to the inner wall of the machine base, and a drive wheel is fixedly connected to the output end of the main spindle motor. The shaft end of the clamping station passes through the station seat and is fixedly connected to a driven wheel. The driven wheel and the drive wheel are meshed and driven. Multiple rolling balls are rotatably connected to the side of the machine base facing the station seat in a ring structure.

[0009] Preferably, the positioning component includes a drive motor, which is fixedly connected to the inner wall of the machine base. A lead screw is fixedly connected to the output end of the drive motor. A U-shaped positioning rod is threadedly connected to the outer wall of the lead screw. The U-shaped positioning rod is slidably engaged with the inner wall of the machine base. A drive rack is fixedly connected to the U-shaped positioning rod. The drive rack is slidably engaged with the inner wall of the machine base. A gear plate is fixedly connected to the end of the lead screw near the drive motor.

[0010] Preferably, the airflow seat is fixedly connected to the inner wall of the base, and a piston frame is slidably fitted through the inner wall of the airflow seat. A spring is fixedly connected between the inner end of the piston frame and the inner wall of the airflow seat. A cam is slidably contacted on one side of the outer end of the piston frame. A gear is fixedly connected to one end of the cam. The gear is rotatably connected to the outer wall of the airflow seat through a pin. One side of the gear is meshed with a gear plate for transmission. An air inlet pipe is fixedly connected through one end of the airflow seat and penetrates the inner wall of the base. A telescopic tube is fixedly connected through the side of the airflow seat near the gear. The movable end of the telescopic tube is fixedly connected to a U-shaped positioning rod and slidably fitted through the inner wall of the base.

[0011] Preferably, a limiting annular groove is formed on the outer wall of the end of the workstation near the machine base. The inner wall of the limiting annular groove is slidably fitted with the outer wall of the ball. An adjusting motor is fixedly connected to the inner end of the limiting annular groove by a pin. The adjusting motor is fixedly connected to the inner wall of the machine base. Multiple storage slots are formed in an annular structure on the side of the workstation away from the machine base. Two adjusting slots are formed in a symmetrical structure on the inner wall of one side of the storage slot. The adjusting slots are bent. Multiple sets of positioning holes are formed in an annular structure on the side of the workstation near the machine base. The inner wall of the positioning holes is movably inserted into both ends of one side.

[0012] Preferably, the outer wall of the protective sleeve is slidably fitted with the inner wall of the storage groove, the inner wall of the outer end of the protective sleeve has a ring structure with multiple air jet holes, the air jet holes are inclined, the inner wall of the inner end of the protective sleeve is slidably fitted with an air guide tube, the other end of the air guide tube is fixedly connected to the inner wall of the workstation seat, and the outer end of the air guide tube is movably inserted into the inner wall of the movable end of the telescopic tube.

[0013] Preferably, a cover is provided on the outer end face of the protective sleeve, one end of the cover is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the inner wall of the protective sleeve, the other end of the rotating shaft is fixedly connected to an adjusting wheel, one side of the adjusting wheel is engaged with an adjusting rack, one end of the adjusting rack extends through the inner wall of the protective sleeve to the outside and is fixedly connected to a guide shaft, both ends of the guide shaft are slidably engaged with the inner wall of the adjusting groove.

[0014] Preferably, the push-pull assembly includes a push-pull rod assembly, one end of which is rotatably connected to the inner end of the protective sleeve, and the other end of which is rotatably connected to the inner wall of the workstation seat. A worm gear is fixedly connected to the end of the push-pull rod assembly connected to the workstation seat.

[0015] Preferably, a worm is provided on one side of the worm gear for meshing transmission. The worm is rotatably connected to the inner wall of the workstation seat. A transmission wheel is fixedly connected to one end of the worm, and the transmission wheel meshes with a transmission rack for transmission.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting multiple clamping stations on the workpiece base, the appropriate clamping station can be quickly switched according to the workpiece specifications and structural type to meet the differentiated clamping requirements of different workpieces. At the same time, after the workpiece base rotates to change stations, the U-shaped positioning rod is used to accurately lock and position the workpiece base, effectively suppressing the position deviation and movement after the workpiece rotation. Combined with the precision compensation structure, the machining datum is further stabilized, and the positioning error is reduced. This not only enables continuous machining of multiple workpieces in rotation, shortens downtime for clamping, and improves the overall machining efficiency, but also continuously ensures the dimensional accuracy and part machining consistency of milling and turning composite machining.

[0018] 2. By setting a protective sleeve on the outside of the clamping station, the unused clamping station can be protected. It can effectively shield and protect the clamping station from cutting chips, coolant mist, dust and impurities, preventing them from corroding the clamping structure and extending the service life of the tooling. At the same time, by using the positioning component to link the push-pull component, the protective sleeve can be automatically extended and retracted as the station is switched, without the need for manual operation, and the degree of automation is high.

[0019] 3. By setting an airflow seat inside the machine base, while the positioning component resets and moves the protective sleeve outward to protect the clamping station after use, it can also move the piston frame inside the airflow seat, so that the air jet holes on the protective sleeve can spray high-speed airflow to automatically blow air to clean the clamping station after processing, remove residual chips and cutting fluid in time, avoid the accumulation of impurities affecting the accuracy of the fixture and the subsequent clamping and positioning effect, and further ensure the processing stability and long-term processing accuracy after multi-station switching. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0021] Figure 2 This is a partial cross-sectional view of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0022] Figure 3 This is a partial cross-sectional schematic diagram of the base and clamping station structure of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0023] Figure 4 This is a schematic diagram of the positioning components and other structures of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0024] Figure 5 This is a partial cross-sectional schematic diagram of the airflow seat structure of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0025] Figure 6 This is a partial cross-sectional schematic diagram of the workstation base structure of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0026] Figure 7 This is a partial cross-sectional schematic diagram of the protective sleeve and other structures of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0027] Figure 8 This is a schematic diagram of the push-pull assembly structure of a multi-station adaptive clamping milling and turning machine based on precision compensation according to the present invention.

[0028] The following components are marked in the diagram: 1. Machine body; 2. Machine base; 3. Positioning assembly; 4. Airflow seat; 5. Workstation seat; 6. Clamping station; 7. Protective sleeve; 8. Push-pull assembly; 201. Spindle motor; 202. Drive wheel; 203. Ball bearing; 601. Driven wheel; 301. Drive motor; 302. Lead screw; 303. U-shaped positioning rod; 304. Drive rack; 305. Gear plate; 401. Piston frame; 402. Spring ; 403, Cam; 404, Gear; 405, Telescopic tube; 501, Limiting ring groove; 502, Adjusting motor; 503, Adjusting groove; 504, Positioning hole; 701, Air guide pipe; 702, Cover; 703, Rotating shaft; 704, Adjusting wheel; 705, Adjusting rack; 706, Guide shaft; 707, Air jet hole; 801, Push-pull rod assembly; 802, Worm gear; 803, Worm; 804, Transmission wheel. Detailed Implementation

[0029] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] like Figures 1-8 The illustrated multi-station adaptive clamping milling and turning machine with precision compensation includes a body 1, a base 2 fixedly connected inside the body 1, a positioning component 3 fixedly connected to the inner wall of the bottom end of the base 2, an airflow seat 4 disposed above the positioning component 3, and a workstation 5 rotatably connected to one side of the base 2. Multiple clamping stations 6 are arranged in a ring structure on the workstation 5. A protective sleeve 7 is slidably fitted onto the inner wall of the workstation 5 at each clamping station 6, and a push-pull component 8 is rotatably connected to the inner end of the protective sleeve 7. The multiple clamping stations 6 are a standard three-jaw self-centering clamping station, a four-jaw independently adjustable clamping station, a floating ejector pin type center clamping station, and a flexible thin-walled part adaptive clamping station.

[0031] like Figure 3 As shown, a spindle motor 201 is fixedly connected to the inner wall of the machine base 2, and a drive wheel 202 is fixedly connected to the output end of the spindle motor 201. The shaft end of the clamping station 6 passes through the station seat 5 and is fixedly connected to a driven wheel 601. The driven wheel 601 and the drive wheel 202 are meshed and driven. Multiple rolling balls 203 are rotatably connected to the side of the machine base 2 facing the station seat 5 in a ring structure.

[0032] The spindle motor 201 is a high-precision servo spindle motor with adjustable speed, smooth operation, low noise, and high positioning accuracy. It is fixedly connected to the inner wall of the machine base 2 by bolts, ensuring a firm installation. It can provide stable rotational power for the clamping station 6 and is suitable for the high-precision requirements of milling and turning composite machining. The ball bearings 203 are made of high-strength wear-resistant steel balls with a smooth and hardened surface. They are evenly distributed in a ring on the side of the machine base 2 facing the station seat 5 and slide in cooperation with the limiting ring groove 501 of the station seat 5. They play a supporting and guiding role, reduce the friction of the station seat 5 during rotation, ensure smooth and stable rotation of the station seat 5, and avoid deviation or jamming during rotation.

[0033] like Figure 4 As shown, the positioning component 3 includes a drive motor 301, which is fixedly connected to the inner wall of the base 2. A lead screw 302 is fixedly connected to the output end of the drive motor 301. A U-shaped positioning rod 303 is threadedly connected to the outer wall of the lead screw 302. The U-shaped positioning rod 303 is slidably engaged with the inner wall of the base 2. A drive rack 304 is fixedly connected to the U-shaped positioning rod 303. The drive rack 304 is slidably engaged with the inner wall of the base 2. A gear plate 305 is fixedly connected to the end of the lead screw 302 near the drive motor 301.

[0034] like Figure 5 As shown, the airflow seat 4 is fixedly connected to the inner wall of the base 2. A piston frame 401 is slidably fitted through the inner wall of the airflow seat 4. A spring 402 is fixedly connected between the inner end of the piston frame 401 and the inner wall of the airflow seat 4. A cam 403 is slidably contacted on one side of the outer end of the piston frame 401. A gear 404 is fixedly connected to one end of the cam 403. The gear 404 is rotatably connected to the outer wall of the airflow seat 4 via a pin. One side of the gear 404 meshes with a gear disc 305 for transmission. An air inlet pipe is fixedly connected through one end of the airflow seat 4 and penetrates the inner wall of the base 2. A telescopic tube 405 is fixedly connected through the side of the airflow seat 4 near the gear 404. The movable end of the telescopic tube 405 is fixedly connected to a U-shaped positioning rod 303 and slides through the inner wall of the base 2. The spring 402 drives the piston frame 401 to automatically reset for air extraction. A one-way valve is installed in both the air inlet pipe and the telescopic tube 405.

[0035] Spring 402 is a stainless steel compression spring, which is elastic, stable, fatigue-resistant, and corrosion-resistant. Under normal conditions, it is in a naturally extended state. One end is welded and fixed to the inner end of piston frame 401, and the other end is welded and fixed to the inner wall of airflow seat 4, with a firm connection. Its core function is to drive piston frame 401 to automatically reset. When cam 403 rotates and releases the pressure on piston frame 401, spring 402 elastically resets, pulling piston frame 401 to move inward, realizing the suction action and preparing for the next blowing.

[0036] like Figure 6As shown, a limiting annular groove 501 is provided on the outer wall of the end of the workstation 5 near the machine base 2. The inner wall of the limiting annular groove 501 is slidably fitted with the outer wall of the ball 203. An adjusting motor 502 is fixedly connected to the inner end of the limiting annular groove 501 by a pin. The adjusting motor 502 is fixedly connected to the inner wall of the machine base 2. Multiple storage slots are provided in an annular structure on the side of the workstation 5 away from the machine base 2. Two adjusting slots 503 are provided in a symmetrical structure on the inner wall of one side of the storage slot. The adjusting slots 503 are bent. Multiple sets of positioning holes 504 are provided in an annular structure on the side of the workstation 5 near the machine base 2. The inner wall of the positioning hole 504 is movably inserted into the two ends on one side.

[0037] By setting multiple clamping stations 6 on the workstation 5, the appropriate clamping station 6 can be quickly switched according to the workpiece specifications and structural type to meet the differentiated clamping requirements of different workpieces. At the same time, after the workstation 5 rotates to change stations, the U-shaped positioning rod 303 is used to accurately lock and position the workstation 5, effectively suppressing the position deviation and movement after the station rotates. Combined with the precision compensation structure, the stability of the machining datum is further guaranteed, and the positioning error is reduced. This not only enables continuous machining of multiple workpieces in rotation, shortens downtime for clamping, and improves the overall machining efficiency, but also continuously ensures the dimensional accuracy and part machining consistency of milling and turning composite machining.

[0038] like Figure 7 As shown, the outer wall of the protective sleeve 7 is slidably fitted to the inner wall of the storage groove. The inner wall of the outer end of the protective sleeve 7 has multiple air jet holes 707 in a ring-shaped structure, with the air jet holes 707 arranged at an angle. An air guide pipe 701 is slidably fitted through the inner wall of the inner end of the protective sleeve 7. The other end of the air guide pipe 701 is fixedly connected to the inner wall of the workstation base 5, and the outer end of the air guide pipe 701 is movably inserted into the inner wall of the movable end of the telescopic pipe 405. The bent end of the adjusting groove 503 automatically opens and closes the cover 702 while the protective sleeve 7 is being extended or retracted.

[0039] A cover 702 is provided on the outer end face of the protective sleeve 7. One end of the cover 702 is fixedly connected to a rotating shaft 703. The rotating shaft 703 is rotatably connected to the inner wall of the protective sleeve 7. The other end of the rotating shaft 703 is fixedly connected to an adjusting wheel 704. An adjusting rack 705 is meshed and driven on one side of the adjusting wheel 704. One end of the adjusting rack 705 passes through the inner wall of the protective sleeve 7 and extends to the outside and is fixedly connected to a guide shaft 706. Both ends of the guide shaft 706 are slidably engaged with the inner wall of the adjusting groove 503.

[0040] like Figure 8 As shown, the push-pull assembly 8 includes a push-pull rod assembly 801. One end of the push-pull rod assembly 801 is rotatably connected to the inner end of the protective sleeve 7, and the other end of the push-pull rod assembly 801 is rotatably connected to the inner wall of the workstation seat 5. A worm gear 802 is fixedly connected to the end of the push-pull rod assembly 801 connected to the workstation seat 5.

[0041] A worm 803 is meshed and driven on one side of the worm gear 802. The worm 803 is rotatably connected to the inner wall of the workstation 5. A transmission wheel 804 is fixedly connected to one end of the worm 803. The transmission wheel 804 meshes and drives the transmission rack 304. The number of teeth of the transmission wheel 804 matches the tooth pitch of the transmission rack 304 to ensure precise transmission. This allows the opening and closing of the protective sleeve 7 to be synchronized with the movement of the U-shaped positioning rod 303, eliminating the need for additional power and improving the automation level of the equipment.

[0042] Working principle: First, start the adjusting motor 502. The adjusting motor 502 drives the station seat 5 to rotate around the fixed axis. The limiting ring groove 501 of the station seat 5 slides along the rolling ball 203 to ensure smooth rotation without deviation. According to the processing requirements, rotate the appropriate clamping station 6 to the processing position so that it is precisely aligned with the processing tool and the drive wheel 202 of the spindle motor 201. Then, the adjusting motor 502 stops rotating.

[0043] Then, the drive motor 301 is started, which drives the lead screw 302 to rotate. The lead screw 302 drives the U-shaped positioning rod 303 to move towards the workstation 5. The two ends of the U-shaped positioning rod 303 are precisely inserted into the corresponding positioning holes 504, realizing precise locking and positioning of the workstation 5 and suppressing position deviation and movement after the workstation rotates. At the same time, the U-shaped positioning rod 303 drives the movable end of the telescopic tube 405 to move and fit on the outer end of the air guide tube 701. Meanwhile, the precision ball screw 302 cooperates with the servo drive motor 301 to realize the precise movement of the U-shaped positioning rod 303, which plays a role in precision compensation and ensures the stability of the processing reference. At this time, the U-shaped positioning rod 303 drives the transmission rack 304 to move synchronously. The transmission rack 304 meshes with the transmission wheel 804 of the push-pull assembly 8, driving the transmission wheel 804 and the worm 803 to rotate. The worm 803 meshes with the worm wheel 802, driving the push-pull rod assembly 801 to fold. The push-pull rod assembly 801 pulls the protective sleeve 7 of the current working clamping station 6 back into the storage groove. At the same time, the guide shaft 706 of the protective sleeve 7 slides along the bent end of the adjustment groove 503, driving the adjustment rack 705 to move. The adjustment rack 705 meshes with the adjustment wheel 704, driving the adjustment wheel 704 and the rotating shaft 703 to rotate. The cover 702 automatically opens, revealing the clamp of the clamping station 6, ready to clamp the workpiece.

[0044] The workpiece is then clamped onto the fixture at the current working clamping station 6, ensuring secure clamping and precise positioning. After clamping, the spindle motor 201 is started, driving the drive wheel 202 to rotate. The drive wheel 202 meshes with the driven wheel 601 at the current working clamping station 6, causing the clamping station 6 and the workpiece to rotate synchronously. The machining tool is then activated to perform milling and turning machining on the workpiece. During machining, the machine body 1 and machine base 2 absorb machining vibrations to ensure stable machining. The spindle motor 201 provides real-time speed feedback to prevent overload damage and ensure machining accuracy. The unused clamping station 6 is protected by the protective sleeve 7.

[0045] After the current workpiece is processed, the spindle motor 201 and the machining tool are turned off, and the operator removes the processed workpiece. The transmission motor 301 is started, which drives the lead screw 302 to rotate. The lead screw 302 drives the U-shaped positioning rod 303 to be pulled out from the positioning hole 504 and reset in the direction away from the workstation 5, thus releasing the lock on the workstation 5. At the same time, the U-shaped positioning rod 303 drives the transmission rack 304 to reset. The transmission rack 304 drives the transmission wheel 804 and the worm gear 803 to rotate in the opposite direction. The worm gear 803 drives the worm wheel 802 to rotate in the opposite direction. The push-pull rod assembly 801 unfolds, pushing the protective sleeve 7 out of the storage slot to cover the current clamping position 6. At the same time, the guide shaft 706 slides along the bent end of the adjustment groove 503, which drives the adjustment rack 705 to move. The adjustment rack 705 drives the adjustment wheel 704 and the rotating shaft 703 to rotate. The cover 702 closes automatically, thus protecting the current clamping position 6.

[0046] As the U-shaped positioning rod 303 resets, the lead screw 302 drives the gear plate 305 to rotate. The gear plate 305 meshes with the gear 404 of the airflow seat 4, driving the gear 404 and cam 403 to rotate. The cam 403 squeezes the piston frame 401, causing the piston frame 401 to move towards the inner end of the airflow seat 4, compressing the spring 402. The compressed air in the airflow seat 4 is squeezed and transported to the air guide pipe 701 through the telescopic pipe 405. Then, a high-speed airflow is ejected through the jet hole 707 at the outer end of the protective sleeve 7. The jet hole 707 has an inclined structure, which fully covers the surface of the fixture at the clamping station 6, quickly and thoroughly removing residual chips and cutting fluid from the surface of the fixture, and preventing the accumulation of impurities.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A multi-station adaptive clamping milling and turning composite machine based on precision compensation, comprising a machine body (1), characterized in that: The machine body (1) is fixedly connected to a base (2). A positioning component (3) is fixedly connected to the inner wall of the bottom end of the base (2). An airflow seat (4) is provided above the positioning component (3). A workstation seat (5) is rotatably connected to one side of the base (2). Multiple clamping workstations (6) are arranged in a ring structure on the workstation seat (5). A protective sleeve (7) is slidably fitted on the inner wall of the workstation seat (5) at the clamping workstation (6). A push-pull component (8) is rotatably connected to the inner end of the protective sleeve (7).

2. The multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: A main spindle motor (201) is fixedly connected to the inner wall of the machine base (2). A drive wheel (202) is fixedly connected to the output end of the main spindle motor (201). The shaft end of the clamping station (6) passes through the station seat (5) and is fixedly connected to a driven wheel (601). The driven wheel (601) and the drive wheel (202) are meshed and driven. A number of rolling balls (203) are rotatably connected to the side of the machine base (2) facing the station seat (5) in a ring structure.

3. The multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: The positioning component (3) includes a drive motor (301), which is fixedly connected to the inner wall of the base (2). A lead screw (302) is fixedly connected to the output end of the drive motor (301). A U-shaped positioning rod (303) is threadedly connected to the outer wall of the lead screw (302). The U-shaped positioning rod (303) is slidably connected to the inner wall of the base (2). A drive rack (304) is fixedly connected to the U-shaped positioning rod (303). The drive rack (304) is slidably connected to the inner wall of the base (2). A gear plate (305) is fixedly connected to the end of the lead screw (302) near the drive motor (301).

4. The multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: The airflow seat (4) is fixedly connected to the inner wall of the base (2). A piston frame (401) is slidably fitted through the inner wall of the airflow seat (4). A spring (402) is fixedly connected between the inner end of the piston frame (401) and the inner wall of the airflow seat (4). A cam (403) is slidably contacted on one side of the outer end of the piston frame (401). A gear (404) is fixedly connected to one end of the cam (403). The gear (404) rotates with the outer wall of the airflow seat (4) through a pin. The gear (404) is connected to the gear plate (305) on one side for transmission. An air intake pipe is fixedly connected to one end of the airflow seat (4). The air intake pipe is connected to the inner wall of the machine base (2). A telescopic tube (405) is fixedly connected to the side of the airflow seat (4) near the gear (404). The movable end of the telescopic tube (405) is fixedly connected to the U-shaped positioning rod (303). The movable end of the telescopic tube (405) is slidably connected to the inner wall of the machine base (2).

5. A multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: The workstation seat (5) has a limiting ring groove (501) on the outer wall of one end near the machine base (2). The inner wall of the limiting ring groove (501) is slidably fitted with the outer wall of the ball (203). The inner end of the limiting ring groove (501) is fixedly connected to an adjusting motor (502) by a pin. The adjusting motor (502) is fixedly connected to the inner wall of the machine base (2). The workstation seat (5) has multiple storage slots in a ring structure on the side away from the machine base (2). The inner wall of one side of the storage slot has two adjusting slots (503) in a symmetrical structure. The adjusting slots (503) are bent. The workstation seat (5) has multiple sets of positioning holes (504) in a ring structure on the side near the machine base (2). The inner wall of the positioning hole (504) is movably inserted into one end of the side.

6. The multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: The outer wall of the protective sleeve (7) is slidably fitted with the inner wall of the storage groove. The inner wall of the outer end of the protective sleeve (7) has a ring structure with multiple air jet holes (707). The air jet holes (707) are inclined. The inner wall of the inner end of the protective sleeve (7) is slidably fitted with an air guide pipe (701). The other end of the air guide pipe (701) is fixedly connected to the inner wall of the workstation seat (5). The outer end of the air guide pipe (701) is movably inserted into the inner wall of the movable end of the telescopic pipe (405).

7. A multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: The outer end face of the protective sleeve (7) is provided with a cover (702). One end of the cover (702) is fixedly connected to a rotating shaft (703). The rotating shaft (703) is rotatably connected to the inner wall of the protective sleeve (7). The other end of the rotating shaft (703) is fixedly connected to an adjusting wheel (704). One side of the adjusting wheel (704) is meshed with an adjusting rack (705). One end of the adjusting rack (705) extends through the inner wall of the protective sleeve (7) to the outside and is fixedly connected to a guide shaft (706). Both ends of the guide shaft (706) are slidably engaged with the inner wall of the adjusting groove (503).

8. A multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 1, characterized in that: The push-pull assembly (8) includes a push-pull rod assembly (801), one end of which is rotatably connected to the inner end of the protective sleeve (7), and the other end of which is rotatably connected to the inner wall of the workstation (5). A worm gear (802) is fixedly connected to the end of the push-pull rod assembly (801) connected to the workstation (5).

9. A multi-station adaptive clamping milling and turning composite machine based on precision compensation according to claim 8, characterized in that: The worm gear (802) is equipped with a worm (803) on one side for meshing transmission. The worm (803) is rotatably connected to the inner wall of the workstation seat (5). One end of the worm (803) is fixedly connected to a transmission wheel (804). The transmission wheel (804) is meshed with a transmission rack (304) for transmission transmission.

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