Adaptive bushing inner and outer circle synchronous machining device

Abstract

The utility model relates to mechanical processing technical field, concretely is a kind of self-adapting shaft sleeve inner and outer circle synchronous processing device, including rack, main shaft system, inner circle processing unit and outer circle processing unit, the rack is used to support overall structure;Main shaft system is installed on rack, include shaft sleeve chuck and driving equipment, wherein driving equipment is made of case, driving motor, speed reducer, transmission wheel and driving wheel, workpiece rotation is realized by belt drive, inner circle processing unit includes adjusting track assembly one and milling cutter one, adjusting track assembly one is made of advancing track one, offset track one and lifting track one, cooperation gear drive device and screw drive device realize three-dimensional accurate positioning;Milling cutter one is equipped with cylinder and milling cutter, can complete high-precision inner circle processing, outer circle processing unit structure symmetry, including the same adjusting track assembly two and milling cutter two of structure, for synchronously completing the processing of shaft sleeve outer circle.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to an adaptive bushing inner and outer circle synchronous machining device. Background Technology

[0002] In the field of mechanical manufacturing, bushings are a common mechanical part widely used in various mechanical equipment. To meet the needs of different application scenarios, bushings usually require high-precision machining of their inner and outer diameters. Traditional machining methods typically employ a step-by-step approach to machining the inner and outer diameters. This method is not only inefficient but also prone to cumulative errors, affecting the quality of the final product.

[0003] Inadequacy of existing technology

[0004] Traditional step-by-step processing method

[0005] Low efficiency: Traditional methods require machining the inner and outer circles of the bushing separately, which increases production time and cost.

[0006] Complex operation: Each time the processing step is changed, the workpiece position and fixture need to be readjusted, which increases the difficulty and time of operation.

[0007] Existing synchronous processing equipment

[0008] Complex structure: Existing synchronous processing equipment is often complex in design, difficult to maintain, and costly.

[0009] Poor adaptability: It is difficult to adapt to the processing requirements of bushings of different specifications and sizes, and lacks flexibility. Utility Model Content

[0010] (a) Technical problems to be solved

[0011] To address the shortcomings of existing technologies, this utility model provides an adaptive bushing inner and outer circle synchronous machining device.

[0012] (II) Technical Solution

[0013] To achieve the above objectives, this utility model provides the following technical solution: An adaptive bushing inner and outer diameter synchronous machining device of this utility model, comprising:

[0014] Frame: Used to support the entire device;

[0015] Spindle system: mounted on the frame, including the spindle sleeve chuck and drive unit;

[0016] Inner circle machining unit: includes an adjusting track assembly and a milling cutter. The adjusting track assembly includes a traveling track, an offset track and a lifting track, and is used to machine the inner circle of the bushing.

[0017] The outer diameter machining unit includes an adjusting track assembly 2 and a milling cutter 2. The adjusting track assembly 2 includes a traveling track 2, an offset track 2, and a lifting track 2, which are used to machine the outer diameter of the bushing.

[0018] Preferably, the driving device includes a chassis, a drive motor, a drive wheel, a geared motor, and a transmission wheel.

[0019] More preferably, the chassis includes an upper cavity and a lower cavity, the rear ends of the upper cavity and the lower cavity are connected, the drive motor is fixedly installed in the lower cavity, the reduction motor is fixedly installed in the upper cavity, the drive wheel is installed at the output end of the drive motor, the transmission wheel is installed at the input end of the reduction motor, a transmission belt is sleeved between the drive wheel and the transmission wheel, the output end of the reduction motor passes through the chassis, and the bushing chuck is installed at the output end of the reduction motor.

[0020] Preferably, the middle part of the mounting frame for the offset track one and the traveling track one is provided. The traveling track one is slidably fitted on the offset track one and driven by a gear drive device. The lifting track one is slidably fitted on the traveling track one and driven by a gear drive device. The milling cutter one is slidably mounted on the lifting track one via a lead screw drive device.

[0021] Preferably, the gear drive device includes a transmission rack, a transmission gear, and a transmission motor. The offset track and the travel track are provided with rack grooves. The transmission motor is fixedly installed at the end of the travel track and the bottom of the lifting track. The transmission gear is installed at the output end of the transmission motor and meshes with the transmission rack.

[0022] More preferably, the lifting track is provided with a lifting groove, the screw drive device includes a threaded screw and a lifting motor, the lifting motor is fixedly installed on the top of the lifting track, the threaded screw is rotatably installed in the lifting groove through a bearing, the output end of the lifting motor is connected to the threaded screw through a coupling, and the milling cutter is set on the threaded screw.

[0023] Preferably, the milling tool includes a motor frame, a cylinder, a third cylinder, a milling cutter, and a punch. The first and third cylinders are mounted at both ends of the motor frame, the first milling cutter is mounted at the output end of the cylinder, and the punch is mounted at the output end of the third cylinder. The motor frame is mounted on the threaded screw via a slider.

[0024] Preferably, each component of the second adjusting track assembly has the same structure as each component of the first adjusting track assembly, and the second traveling track, the second offset track, and the second lifting track in the second adjusting track assembly are located on the side of the frame. The front end of the first traveling track and the second traveling track are provided with guide rails, and the guide rails are fixedly installed on the frame.

[0025] More preferably, the milling tool two includes a motor frame two, a cylinder two, and a milling cutter two. The motor frame two is sleeved on the threaded screw of the lifting rail two via a slider. The cylinder two is installed at the bottom of the motor frame two and the milling cutter two is installed at the output end of the cylinder two.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, this utility model provides an adaptive bushing inner and outer circle synchronous machining device, which has the following beneficial effects:

[0028] High-precision machining

[0029] Spindle system: The drive equipment includes a housing, drive motor, drive wheel, geared motor and transmission wheel, ensuring that the spindle chuck can rotate at a stable speed, thereby achieving high-precision workpiece positioning and machining.

[0030] Adjustable track assembly: Both the inner and outer circle machining units are equipped with travel tracks, offset tracks, and lifting tracks, which are precisely controlled by a gear drive device to ensure that the milling cutter can move freely in three-dimensional space and achieve micron-level machining accuracy.

[0031] High-efficiency synchronous processing

[0032] Synchronous machining of inner and outer circles: This device can machine the inner and outer circles of the bushing at the same time, avoiding the error accumulation problem that may occur in the traditional step-by-step machining method, and improving machining efficiency and product quality.

[0033] Diverse tool configurations: The internal machining unit is equipped with motor frame one, cylinder one, cylinder three, milling cutter one, and punching cutter, which can meet various machining needs, such as turning, drilling, and punching. The external machining unit is equipped with motor frame two, cylinder two, and milling cutter two for turning external diameters.

[0034] Rapid response: The milling cutter driven by the lead screw and cylinder can quickly adjust its position and cutting depth to meet the machining requirements of bushings of different specifications and sizes, significantly shortening the machining time. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall equipment structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the adjustable track assembly of this utility model;

[0037] Figure 3 This is a schematic diagram of the second structure of the adjustable track assembly of this utility model;

[0038] Figure 4 This is a schematic cross-sectional view of the drive device of this utility model;

[0039] In the diagram: 1. Frame; 2. Drive unit; 3. Bushing chuck; 4. Adjusting track assembly one; 5. Milling cutter one; 6. Adjusting track assembly two; 7. Milling cutter two; 8. Chassis; 9. Upper cavity; 10. Lower cavity; 11. Drive motor; 12. Gear motor; 13. Drive wheel; 14. Transmission wheel; 15. Transmission belt; 16. Offset track one; 17. Travel track one; 18. Lifting track one; 19. Rack groove; 20. Transmission rack; 21. Transmission motor; 22. Transmission gear; 23. Motor frame one; 24. Cylinder one; 25. Cylinder three; 26. Milling cutter one; 27. Punching cutter; 28. Offset track two; 29. ​​Travel track two; 30. Lifting track two; 31. Motor frame two; 32. Cylinder two; 33. Milling cutter two; 34. Lifting motor; 35. Lead screw; 36. Guide rail. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see Figure 1-4 This utility model discloses an adaptive bushing inner and outer circle synchronous machining device, comprising:

[0042] Frame 1: Used to support the entire device;

[0043] Spindle system: mounted on frame 1, including shaft sleeve chuck 3 and drive device 2;

[0044] The inner circle machining unit includes an adjusting track assembly 4 and a milling cutter 5. The adjusting track assembly 4 includes a traveling track 17, an offset track 16 and a lifting track 18, which are used to machine the inner circle of the bushing.

[0045] The outer diameter machining unit includes an adjusting track assembly 26 and a milling cutter 27. The adjusting track assembly 26 includes a traveling track 29, an offset track 28 and a lifting track 20, which are used to machine the outer diameter of the bushing.

[0046] This technical solution provides an adaptive synchronous machining device for the inner and outer diameters of bushings, designed to achieve simultaneous and efficient machining of the inner and outer diameters of bushings through a precise positioning and synchronization control system. The device includes a frame 1, a spindle system, an inner diameter machining unit, and an outer diameter machining unit. All components work collaboratively to ensure a high-precision and high-efficiency machining process.

[0047] Working principles of each component

[0048] Rack 1

[0049] Function: To support the entire device and ensure the stability and accuracy of each component.

[0050] Structure: Typically made of robust metal materials, with sufficient strength and rigidity to withstand vibrations and loads generated during processing.

[0051] spindle system

[0052] Function: Mounted on frame 1, including bushing chuck 3 and drive device 2, used to clamp and drive bushing rotation. Bushing chuck 3 can adopt a mature three-jaw chuck structure.

[0053] structure:

[0054] Drive device 2 includes a housing 8, a drive motor 11, a drive wheel 13, a geared motor 12, and a transmission wheel 14. The drive motor 11 is fixedly installed in the lower cavity 10 of the housing 8, the geared motor 12 is fixedly installed in the upper cavity 9, the drive wheel 13 and the transmission wheel 14 are connected by a transmission belt 15, and the output end of the geared motor 12 passes through the housing 8 and is connected to the bushing chuck 3.

[0055] Bushing chuck 3: Installed at the output end of geared motor 12, it can automatically adjust according to different diameters of bushings to ensure firm clamping without damaging the workpiece surface.

[0056] Internal machining unit

[0057] Function: To machine the inner circle of the bushing, including adjusting the track assembly-4 and the milling cutter-5.

[0058] structure:

[0059] Adjustable track assembly 4 includes a traveling track 17, an offset track 16, and a lifting track 18. The traveling track 17 is slidably fitted onto the offset track 16 and is driven by a gear drive device; the lifting track 18 is slidably fitted onto the traveling track 17 and is also controlled by a gear drive device; the milling cutter 5 is slidably mounted on the lifting track 18 via a lead screw drive device.

[0060] Gear drive device: includes a transmission rack 20, a transmission gear 22, and a transmission motor 21. The offset track 16 and the traveling track 17 are provided with rack grooves 19. The transmission motor 21 is fixedly installed at the end of the traveling track 17 and the bottom of the lifting track 18. The transmission gear 22 is installed at the output end of the transmission motor 21 and meshes with the transmission rack 20.

[0061] Screw drive device: includes a threaded screw 35 and a lifting motor 34. The lifting motor 34 is fixedly installed on the top of the lifting rail 18, the threaded screw 35 is rotatably installed in the lifting groove through bearings, the output end of the lifting motor 34 is connected to the threaded screw 35 through a coupling, and the milling cutter 5 is sleeved on the threaded screw 35.

[0062] The milling cutter 5 includes a motor frame 1, a cylinder 24, a cylinder 25, a milling cutter 26, and a punching cutter 27. The cylinder 24 and the cylinder 25 are installed at both ends of the motor frame 1, the milling cutter 26 is installed at the output end of the cylinder, and the punching cutter 27 is installed at the output end of the cylinder 25. The motor frame 1 is mounted on the threaded screw 35 via a slider.

[0063] External cylindrical machining unit

[0064] Function: To machine the outer diameter of the bushing, including adjusting the track assembly 26 and the milling cutter 27.

[0065] structure:

[0066] Adjusting track assembly 26: It has the same structure as adjusting track assembly 4, but is located on the side of frame 1. The front end of traveling track 17 and traveling track 29 is provided with guide rail 36, which is fixedly installed on frame 1.

[0067] Milling cutter 2 7: includes motor frame 2, cylinder 2 32 and milling cutter 2 33. Motor frame 2 is mounted on threaded screw 35 of lifting rail 2 30 via a slider. Cylinder 2 32 is installed at the bottom of motor frame 1. Milling cutter 2 33 is installed at the output end of cylinder 2 32.

[0068] Dual-spindle synchronous drive principle

[0069] The spindle system achieves the rotation of the bushing chuck 3 via a drive motor 11 → transmission belt 15 → reduction motor 12 transmission chain. The drive motor 11 (in the lower cavity 10) outputs power, which is transmitted to the transmission wheel 14 via the drive wheel 13 and transmission belt 15. The reduction motor 12 (in the upper cavity 9) reduces the speed and increases the torque (reduction ratio 3:1), driving the bushing chuck 3 to rotate at 0-2000 rpm. This design uses belt drive to buffer impacts, and the combination of reduction and precise motor speed control ensures the rotational accuracy of the bushing (radial runout ≤5μm), while also adapting to the machining torque requirements of bushings made of different materials (e.g., titanium alloys require high torque and low speed rotation).

[0070] Working principle of internal machining unit

[0071] Adjusting the track assembly – 4-dimensional motion logic:

[0072] Offset track 16 (middle of frame 1): Driven by drive motor 21 → drive gear 22 → drive rack 20, it realizes the lateral (X-axis) offset of travel track 17, with a stroke range of ±80mm and a positioning accuracy of ±0.02mm. It is used to adjust the radial position of inner circle machining (e.g., when machining the inner circle of a φ40mm bushing, offset track 16 moves 20mm to the center position).

[0073] Traveling track 17: It is sleeved above offset track 16 and achieves longitudinal (Z-axis) travel through another set of transmission gears 22-rack mechanism, with a stroke of 0-150mm and a speed of 0.1-10mm / s, controlling the axial range of inner circle machining (such as machining from the front end to the rear end of the bushing).

[0074] Lifting rail 18: Sliding sleeve on top of traveling rail 17, vertical (Y-axis) feed is achieved by lifting motor 34 → threaded screw 35. The screw lead is 5mm, the step accuracy of lifting motor 34 is 1.8°, corresponding to a feed resolution of 0.0025mm / step, ensuring micron-level control of the inner circle machining depth.

[0075] Milling tool 15 execution mechanism:

[0076] Cylinder 24 drives the milling cutter 26 to extend and retract. After contacting the inner surface of the bushing, the motor frame 1 rotates with the lead screw 35 to feed, realizing internal boring or milling (such as roughing with a depth of cut of 0.5mm and finishing with a depth of cut of 0.1mm).

[0077] Cylinder 325 drives punch 27 for machining positioning holes or grooves on the inner end face (e.g., hole diameter φ3mm, depth 2mm).

[0078] Working principle of external cylindrical machining unit

[0079] Adjustable track assembly 2: symmetrical design.

[0080] The structure is exactly the same as the adjustment track assembly 4, but it is located on the right side of the frame 1 to achieve spatial separation of the outer circle machining. The driving mechanism of the travel track 29, offset track 28, and lifting track 30 is the same as that of the inner circle unit, ensuring that the inner and outer circles are machined synchronously (such as when the inner circle is boring, the outer circle is turned synchronously).

[0081] Milling tool 2, function 7:

[0082] Cylinder 2 32 drives milling cutter 2 33 for external turning or grinding (e.g., roughing feed rate 0.3 mm / r, finishing feed rate 0.05 mm / r).

[0083] The motor frame 1 is connected to the threaded screw 35 of the lifting rail 2 30 via a slider, realizing vertical feed for outer circle machining (precision is the same as the inner circle unit), and can machine outer circle diameters ranging from φ20 to φ100mm.

[0084] This technical solution can be configured with a cooling and lubrication system commonly used in CNC machine tools to spray coolant to assist in the cutting of the inner and outer circles of the bushing.

[0085] The following are some common cooling and lubrication systems and their application technologies:

[0086] Oil mist cooling and lubrication system

[0087] Working principle: By mixing lubricating oil with compressed air to form a fine oil mist, it is then sprayed onto the cutting area to provide the necessary cooling and lubrication effects.

[0088] advantage:

[0089] Reduce the amount of lubricating oil used, making it environmentally friendly and energy-saving;

[0090] It has a good cooling effect and can effectively reduce the cutting temperature;

[0091] Improve tool life and workpiece surface quality;

[0092] It can precisely control the supply of oil mist.

[0093] Minimum Quantity Lubrication (MQL)

[0094] Working principle: A small amount of lubricating oil is mixed with air and sprayed directly onto the cutting point, which is more economical and efficient than traditional high-flow coolant.

[0095] advantage:

[0096] Significantly reduces coolant consumption and lowers costs;

[0097] Improve the working environment and reduce potential health hazards to operators;

[0098] Environmentally friendly, reducing the need for wastewater treatment;

[0099] Improve processing efficiency and reduce downtime for cleaning or changing coolant.

[0100] High-pressure cooling system

[0101] Working principle: The coolant is pressurized by a high-pressure pump and sprayed directly onto the cutting area, which can effectively remove chips and carry away a large amount of heat.

[0102] advantage:

[0103] Powerful flushing of chips prevents clogging;

[0104] Excellent cooling performance, suitable for difficult-to-machine materials such as high-temperature alloys;

[0105] It enhances the durability of the blade and reduces wear;

[0106] It is particularly suitable for applications requiring strong cooling, such as deep hole drilling and tapping.

[0107] Internal cooling system

[0108] Working principle: The coolant reaches the cutting edge directly through the internal channels of the tool, cooling the cutting zone from the inside.

[0109] advantage:

[0110] It acts directly on the hottest part, resulting in a significant cooling effect;

[0111] Better chip removal capability helps maintain a smooth cutting process;

[0112] Suitable for high-speed and heavy-duty cutting conditions;

[0113] It can effectively extend the service life of cutting tools and improve machining accuracy.

[0114] Combined cooling system

[0115] Working principle: Combining the advantages of one or more of the above cooling methods, and flexibly configured according to specific processing requirements.

[0116] advantage:

[0117] Choose the most suitable cooling strategy based on different processing tasks;

[0118] Offers broader applicability and flexibility;

[0119] It performs well under complex processing conditions and can meet various challenges;

[0120] Optimize resource allocation to achieve the best cost-effectiveness.

[0121] The cylinder in this technical solution can be a pneumatic system commonly used in the field of CNC machine tools, and both the pneumatic system and the motor involved in this technical solution can be controlled by a programmable controller commonly used in the field of CNC machine tools. In the field of CNC machine tools, cylinder-mounted tool systems are a common automation solution used to achieve rapid tool changes and precise control. This system is usually used in conjunction with an automatic tool changer (ATC) to improve production efficiency and machining accuracy. The following is a detailed introduction to commonly used cylinder-mounted tool systems in CNC machine tools:

[0122] Basic structure and working principle

[0123] Basic structure

[0124] Cylinder: A pneumatic actuator that drives a piston to move linearly using compressed air.

[0125] Tool holder: A device used to hold tools in place, typically including a tool holder, spring collet, or hydraulic clamping mechanism.

[0126] Tool changer arm: A part of the robotic arm used to grasp and place tools.

[0127] Control system: The cylinder's movement is controlled by a PLC or CNC system to ensure the accuracy and synchronization of the movement.

[0128] Working principle

[0129] Tool clamping: When it is necessary to change the tool, the control system sends a signal to the cylinder, causing its piston to retract and release the current tool.

[0130] Tool change: The tool changer arm moves to the designated position, picks up the new tool, and brings it to the spindle position.

[0131] Tool installation: The cylinder piston extends, pushing the tool into the spindle, and the clamping mechanism securely fixes the tool to the spindle.

[0132] Feedback confirmation: The sensor detects whether the tool is correctly installed and feeds the information back to the control system to ensure that the operation is correct.

[0133] Common types and applications

[0134] Lever-type cylinder

[0135] Working principle: The cylinder pushes the pull rod to loosen or tighten the tool clamping mechanism.

[0136] Rotary cylinder

[0137] Working principle: The cylinder not only provides linear motion, but can also achieve rotary motion through internal gears or racks to complete multi-angle positioning of the tool.

[0138] Double-acting cylinder

[0139] Working principle: Air can be supplied to both ends of the cylinder, which controls the extension and retraction of the piston respectively, thereby achieving bidirectional action.

[0140] Single-acting cylinder

[0141] Working principle: Air is supplied from only one end, and the other end is reset by a spring, achieving unidirectional action.

[0142] Detailed Workflow

[0143] Preparation

[0144] The shaft to be processed is inserted into the shaft sleeve chuck 3 of the spindle system, and the chuck is automatically adjusted according to the actual size of the shaft sleeve to ensure that it is firmly clamped and does not damage the surface of the workpiece.

[0145] Startup System

[0146] Start the drive motor 11 and the reduction motor 12 to make the bushing rotate at a preset speed. At the same time, start the milling cutters of the inner and outer diameter machining units to make them start rotating at high speed.

[0147] Synchronous processing

[0148] The milling cutter 5 of the inner circle machining unit enters the bushing and begins to cut the inner circle; at the same time, the milling cutter 7 of the outer circle machining unit begins to cut the outer circle.

[0149] The gear drive unit drives the movement of the offset track and the travel track according to a preset program, ensuring that the milling tool can accurately reach the designated position.

[0150] The lead screw drive adjusts the height of the milling cutter based on real-time monitoring data to ensure consistent cutting depth.

[0151] Cooling and lubrication

[0152] During the machining process, a conventional cooling and lubrication system in the CNC machine tool field is configured to periodically spray coolant onto the machining area to reduce frictional heat and extend tool life.

[0153] Waste disposal

[0154] The waste disposal system collects and processes waste generated during the processing in a timely manner, keeping the working environment clean.

[0155] Complete processing

[0156] After the inner and outer diameters are machined, shut down all tools and the spindle system, and remove the machined bushing.

[0157] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adaptive bushing inner and outer diameter synchronous machining device, characterized in that, include: Frame (1): Used to support the entire device; Spindle system: mounted on the frame (1), including a bushing chuck (3) and a drive device (2); The inner circle machining unit includes an adjusting track assembly (4) and a milling cutter (5). The adjusting track assembly (4) includes a traveling track (17), an offset track (16), and a lifting track (18), which are used to machine the inner circle of the bushing. The outer diameter machining unit includes an adjustment track assembly (6) and a milling cutter (7). The adjustment track assembly (6) includes a travel track (29), an offset track (28), and a lifting track (30), which are used to machine the outer diameter of the bushing.

2. The adaptive bushing inner and outer circle synchronous machining device according to claim 1, characterized in that, The drive device (2) includes a chassis (8), a drive motor (11), a drive wheel (13), a geared motor (12), and a transmission wheel (14).

3. The adaptive bushing inner and outer circle synchronous machining device according to claim 2, characterized in that, The chassis (8) includes an upper cavity (9) and a lower cavity (10), the rear ends of the upper cavity (9) and the lower cavity (10) are connected, the drive motor (11) is fixedly installed in the lower cavity (10), the reduction motor (12) is fixedly installed in the upper cavity (9), the drive wheel (13) is installed at the output end of the drive motor (11), the transmission wheel (14) is installed at the input end of the reduction motor (12), a transmission belt (15) is sleeved between the drive wheel (13) and the transmission wheel (14), the output end of the reduction motor (12) passes through the chassis (8), and the bushing chuck (3) is installed at the output end of the reduction motor (12).

4. The adaptive bushing inner and outer circle synchronous machining device according to claim 1, characterized in that, The offset track one (16) and the traveling track one (17) are mounted in the middle of the frame (1). The traveling track one (17) is slidably sleeved on the offset track one (16) and driven by a gear drive device. The lifting track one (18) is slidably sleeved on the traveling track one (17) and driven by a gear drive device. The milling cutter one (5) is slidably mounted on the lifting track one (18) by a lead screw drive device.

5. The adaptive bushing inner and outer circle synchronous machining device according to claim 4, characterized in that, The gear drive device includes a transmission rack (20), a transmission gear (22), and a transmission motor (21). The offset track (16) and the travel track (17) are provided with rack grooves (19). The transmission motor (21) is fixedly installed at the end of the travel track (17) and the bottom of the lifting track (18). The transmission gear (22) is installed at the output end of the transmission motor (21), and the transmission gear (22) meshes with the transmission rack (20).

6. The adaptive bushing inner and outer diameter synchronous machining device according to claim 5, characterized in that, The lifting track (18) is provided with a lifting groove. The screw drive device includes a threaded screw (35) and a lifting motor (34). The lifting motor (34) is fixedly installed on the top of the lifting track (18). The threaded screw (35) is rotatably installed in the lifting groove through a bearing. The output end of the lifting motor (34) is connected to the threaded screw (35) through a coupling. The milling cutter (5) is sleeved on the threaded screw (35).

7. The adaptive bushing inner and outer circle synchronous machining device according to claim 6, characterized in that, The milling tool 1 (5) includes a motor frame (1), a cylinder 1 (24), a cylinder 3 (25), a milling cutter 1 (26), and a punching cutter (27). The cylinder 1 (24) and the cylinder 3 (25) are installed at both ends of the motor frame (1), the milling cutter 1 (26) is installed at the output end of the cylinder, and the punching cutter (27) is installed at the output end of the cylinder 3 (25). The motor frame (1) is mounted on the threaded screw (35) by a slider.

8. The adaptive bushing inner and outer circle synchronous machining device according to claim 7, characterized in that, Each component of the second adjustment track assembly (6) has the same structure as each component of the first adjustment track assembly (4). The second travel track (29), the second offset track (28), and the second lifting track (30) in the second adjustment track assembly (6) are located on the side of the frame (1). The front end of the first travel track (17) and the second travel track (29) is provided with a guide rail (36), and the guide rail (36) is fixedly installed on the frame (1).

9. The adaptive bushing inner and outer circle synchronous machining device according to claim 8, characterized in that, The milling tool 2 (7) includes a motor frame (1) 2, a cylinder 2 (32) and a milling cutter 2 (33). The motor frame (1) 2 is mounted on the threaded screw (35) of the lifting rail 2 (30) via a slider. The cylinder 2 (32) is installed at the bottom of the motor frame (1) 2 of the motor frame (1). The milling cutter 2 (33) is installed at the output end of the cylinder 2 (32).

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