Integrated high-speed high-precision milling ram assembly
By integrating design and incorporating motor concentricity adjustment, the vibration and accuracy problems of the slide structure in large CNC gantry milling machines have been solved, achieving high-precision and high-efficiency machining of the slide and improving the overall performance of the machine tool.
Patent Information
- Application Number
- CN202520434838.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-12
AI Technical Summary
The existing large CNC gantry milling machine slide structure has vibration and accuracy problems during high-speed and heavy-load machining. This is mainly due to the eccentricity of the drive shaft, insufficient rigidity, and the bias torque caused by uneven force on the slide, which affects machining accuracy and efficiency.
The integrated design places the sliding drive unit and the rotating spindle unit inside the ram body. The built-in motor and mechanical spindle are concentrically adjusted. Combined with the rear feed system of the ram and the internal lead screw structure, the transmission shaft and additional torque are reduced, thereby achieving power transmission rigidity and ram stability.
It improves the machining accuracy and stability of the slide, reduces vibration, ensures the machine tool meets the requirements of high-speed and high-precision machining, reduces guide rail friction torque and motor power consumption, and improves machining efficiency.
Smart Images
Figure CN223933085U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of high-end functional components of CNC machine tools, specifically relating to an integrated high-speed and high-precision milling slide assembly. Background Technology
[0002] Currently, in my country, the spindle drive system inside the slide of large CNC gantry milling machines typically places the drive motor and transmission box at the rear end of the slide, while the milling spindle is located at the front end. Therefore, the driving force of the milling spindle needs to be transmitted through a transmission shaft to achieve its rotational machining. Furthermore, in heavy-duty gantry milling machines, the large slide stroke results in a long slide, typically exceeding 6000mm, with a cross-section ≥600mm×600mm. Simultaneously, the transmission torque ≥4000Nm is also significant, requiring an increased diameter and length of the intermediate transmission shaft. During machining, significant deviations in the concentricity of the positioning holes of the transmission box and the milling spindle lead to eccentricity between the transmission shaft's rotation axis and the spindle's rotation axis. This eccentricity causes vibration in the transmission shaft as the spindle speed increases. Additionally, the long transmission shaft results in insufficient rigidity and a large torsion angle when subjected to high driving forces, causing vibration in the spindle during low-speed, high-torque cutting, thus affecting the machine tool's machining accuracy and efficiency. Furthermore, the ram feed system is typically placed on the outside of the ram. Since the lead screw's lifting force is located on the outside of the ram, the point of application of the feed force deviates from the ram's support surface during vertical ram movement. This generates an additional offset torque on the ram itself, causing it to tend to bend laterally. Therefore, developing an integrated high-speed, high-precision milling ram assembly to address the aforementioned drawbacks of the ram structure in large CNC gantry milling machines is highly practical. Utility Model Content
[0003] This utility model aims to solve the problem of vibration of the main spindle of existing large CNC gantry milling machines during high-speed and heavy-load machining, and thus provides an integrated high-speed and high-precision milling slide assembly;
[0004] An integrated high-speed, high-precision milling ram assembly is disclosed. The ram assembly includes a sliding drive unit, a rotary spindle unit, and a ram body. The sliding drive unit is embedded in the upper part of the ram body, and the power end of the sliding drive unit extends out of the top of the ram body and is positioned above the ram body. The rotary spindle unit is embedded in the lower part of the ram body, and the power output end of the rotary spindle unit extends out of the bottom of the ram body and is positioned below the ram body. The ram body is constrained and mounted on the slide unit by the sliding drive unit and the guide rail, and the ram body can realize reciprocating motion in the vertical direction within the slide unit.
[0005] Furthermore, the rotating spindle unit includes a mechanical spindle, a No. 1 coupling, and a built-in motor. The built-in motor is embedded in the lower part of the slide body, and the power output shaft of the built-in motor is set vertically downward. The power input end of the built-in motor is connected to an external power source through a wire. The mechanical spindle is set below the built-in motor. One end of the mechanical spindle is connected to the power output shaft of the built-in motor through the No. 1 coupling, and the other end of the mechanical spindle extends vertically out of the bottom of the slide body and is set below the slide body.
[0006] Furthermore, the built-in motor is positioned with the slide body via multiple lateral set screws on the slide;
[0007] Furthermore, a transition bushing is installed on the outside of the mechanical spindle, and the transition bushing is arranged inside the slide body. The transition bushing is equipped with a mechanical spindle coolant supply line, which passes through the inside of the slide body and supplies coolant.
[0008] Furthermore, the sliding drive unit includes a lower bearing housing, a ball screw, an upper bearing housing, a second coupling, a bracket, and a power module. The bracket is vertically mounted on the upper part of the ram body, and the top of the bracket extends out of the top of the ram body and is positioned above the ram body. The ball screw is vertically positioned in the bracket, and the upper and lower ends of the ball screw are rotatably connected to the bracket through the upper bearing housing and the lower bearing housing, respectively. The power module is positioned on the top of the bracket, and the power module housing is detachably connected to the bracket by bolts. The power output end of the power module extends into the interior of the bracket and is connected to the top of the ball screw through the second coupling. The power input end of the power module is connected to an external power source through a wire.
[0009] Furthermore, the power module includes a reducer and a servo motor. The reducer is mounted on the power output end of the servo motor, and the housing of the reducer is detachably connected to the housing of the servo motor. The high-speed power input end of the reducer is connected to the power output end of the servo motor. The reducer is mounted on the top of the bracket, and the housing of the reducer is detachably connected to the bracket by bolts. The low-speed power output end of the reducer extends into the interior of the bracket and is connected to the top of the ball screw through a No. 2 coupling. The power input end of the servo motor is connected to an external power source through a wire.
[0010] Furthermore, the slide unit includes a positioning and fixing bolt, a slide, a screw nut mounting bracket and a screw nut. The screw nut is sleeved on the ball screw and is threadedly connected to the ball screw. One end of the screw nut mounting bracket is mounted on the screw nut, and the other end of the screw nut mounting bracket extends to the outside of the bracket and is fastened to the slide by the positioning and fixing bolt.
[0011] Furthermore, a hydraulic cylinder is provided on each side of the ram body. The cylinder body of each hydraulic cylinder is fixedly connected to the slide block by bolts, and the piston rod end of each hydraulic cylinder is fixedly connected to the ram body by a connecting block.
[0012] The beneficial effects of this application compared to the prior art are:
[0013] This application provides an integrated high-speed, high-precision milling ram assembly. Compared to traditional milling machine ram structures, the transmission structure that drives the ram to slide longitudinally and the spindle structure that drives the milling cutter to rotate are both arranged inside the ram structure. In traditional rams, the transmission structure is arranged on the outside of the ram. In this case, there is a distance L between the center of the lead screw and the guide rail support surface of the ram. When the cross-sectional size of the ram is larger and the stroke is longer, the weight of the ram is heavier (the ram of a large gantry milling machine is used vertically, and the direction of gravity is downward). When the weight of the ram is large, the required lead screw lifting force F is also larger. At this time, the lead screw lifting force F will be transmitted to the ram through the connecting parts. Therefore, the force F will generate a torque of M=FL on the ram with a lever arm L. This torque will act on the ram, causing the ram to have a tendency to bend laterally, affecting the straightness of the ram. Furthermore, when this torque acts on the guide rail surface of the ram, it increases the additional friction of the guide rail, consumes extra power of the motor, and reduces the sensitivity of the ram's movement. In severe cases, it can cause the ram to "crawl" at low speed. In this application, placing the lead screw structure inside the vertical ram guide rail will greatly improve the additional bending moment generated on the ram due to the weight of the lead screw, which will greatly help improve the accuracy of the ram and reduce the additional friction torque on the guide rail.
[0014] This application provides an integrated high-speed, high-precision milling ram assembly, which employs a built-in motor design. Through precise adjustment of the concentricity between the built-in motor axis and the spindle rotation axis during assembly, the milling machine spindle is ensured to operate smoothly during high-speed rotation, reducing vibration. Furthermore, the absence of a drive shaft in the power transmission process ensures rigidity and guarantees high-speed, high-precision machining. Real-time monitoring and feedback of the spindle temperature minimizes temperature fluctuations during machining, preventing thermal errors caused by temperature changes and achieving high-precision machining. Additionally, the vertical feed system is placed at the rear of the ram, and the lead screw center is positioned inside the ram, reducing the additional torque caused by the lead screw drive force and preventing the ram from exhibiting any additional tilting tendency. Attached Figure Description
[0015] Figure 1 This is a front view schematic diagram of the ram assembly described in this application;
[0016] Figure 2 This is a schematic diagram of the slide assembly described in this application in direction AA;
[0017] Figure 3 This is a schematic diagram of the rotating spindle unit in the slide assembly described in this application;
[0018] Figure 4This is a schematic diagram of the debugging of the sliding drive unit in the ram assembly described in this application;
[0019] Figure 5 This is a comparison diagram of the mechanical analysis of the ram assembly described in this application and a conventional ram (where a is the conventional ram structure and b is the ram assembly described in this application).
[0020] In the diagram, 1 is the main spindle, 2 is the transition bushing, 3 is the No. 1 coupling, 4 is the lateral set screw of the ram, 5 is the built-in motor, 6 is the ram body, 7 is the lower bearing seat, 8 is the ball screw, 9 is the positioning and fixing bolt, 10 is the slide, 11 is the nut mounting bracket, 12 is the nut, 13 is the upper bearing seat, 14 is the coupling, 15 is the bracket, 16 is the reducer, 17 is the servo motor, and 18 is the hydraulic cylinder. Detailed Implementation
[0021] Specific implementation method one: Combining Figures 1 to 5 This embodiment describes an integrated high-speed, high-precision milling ram assembly. The ram assembly includes a sliding drive unit, a rotating spindle unit, and a ram body 6. The sliding drive unit is embedded in the upper part of the ram body 6, and its power end extends out of the top of the ram body 6 and is positioned above it. The rotating spindle unit is embedded in the lower part of the ram body, and its power output end extends out of the bottom of the ram body 6 and is positioned below it. The ram body 6 is constrained and mounted on the slide unit by the sliding drive unit and guide rails, and the ram body 6 can reciprocate in the vertical direction within the slide unit.
[0022] This application provides an integrated high-speed, high-precision milling ram assembly, in which both the sliding drive unit and the rotary spindle unit are arranged within the ram body 6, combined with... Figure 5 As shown, this design can effectively shorten the lever arm distance between the center of the lead screw and the guide rail support surface of the slide. When the lever arm distance is shortened, according to the formula of torque M=FL, the torque on the slide will also be reduced, which will greatly improve the additional bending moment on the slide caused by the lifting of the lead screw, which will greatly help improve the accuracy of the slide and reduce the additional friction torque on the guide rail.
[0023] Specific Implementation Method Two: Combining Figures 1 to 5This embodiment differs from Specific Embodiment 1 in that the rotating spindle unit includes a mechanical spindle 1, a first coupling 3, and a built-in motor 5. The built-in motor 5 is embedded in the lower part of the slide body 6, and its power output shaft is vertically downward. The power input terminal of the built-in motor 5 is connected to an external power source via a wire. The mechanical spindle 1 is located below the built-in motor 5. One end of the mechanical spindle 1 is connected to the power output shaft of the built-in motor 5 via the first coupling 3, and the other end of the mechanical spindle 1 extends vertically out of the bottom of the slide body 6 and is located below the slide body 6. Other components and connections are the same as in Specific Embodiment 1.
[0024] Specific implementation method three: Combining Figures 1 to 5 This embodiment differs from Specific Embodiment Two in that the built-in motor 5 is positioned to the slide body 6 via multiple lateral set screws 4. Other components and connections are the same as in Specific Embodiment Two.
[0025] Specific implementation method four: Combination Figures 1 to 5 This embodiment differs from Specific Embodiment Three in that a transition bushing 2 is installed on the outside of the mechanical spindle 1, and the transition bushing 2 is arranged inside the slide body 6. The transition bushing 2 is equipped with a mechanical spindle coolant supply pipe, which passes through the inside of the slide body 6 and supplies coolant. Other components and connections are the same as in Specific Embodiment Three.
[0026] Referring to specific embodiments two to four, during the installation of the rotating spindle unit, the concentricity of the built-in motor axis and the spindle rotation axis needs to be precisely adjusted. First, the built-in motor 5 is installed inside the slide body 6, and the built-in motor 5 is roughly positioned using the slide side set screw 4. Then, the transition bushing 2 and the mechanical spindle 1 are installed. At this time, the No. 1 coupling 3 is not installed yet. A dial indicator is taken, and the dial indicator holder is attached to the end of the mechanical spindle 1 through the slide side window, with the indicator needle pressing on the output shaft of the built-in motor. At this time, the spindle is rotated by hand, and the direction of the indicator needle movement is observed. The concentricity of the built-in motor output shaft and the mechanical spindle is achieved by adjusting the slide side set screw. 1. After completing the above process, inject positioning glue at the corresponding position on the side of the slide block to fix the built-in motor in the circumferential direction and keep its position fixed. Finally, tighten the bolts on the side of the motor for fixation. Then, remove the machine spindle 1, install the No. 1 coupling 3 at the tail end of the machine spindle 1, and reinstall the machine spindle 1. Tighten the No. 1 coupling 3 between the machine spindle 1 and the built-in motor 5. At this time, the coaxiality between the motor shaft of the built-in motor 5 and the machine spindle 1 can be guaranteed. After the coaxiality adjustment, the milling machine spindle is guaranteed to be relatively stable during high-speed rotation, reducing vibration. Moreover, there is no transmission shaft in the power transmission process, which ensures the rigidity of the power transmission.
[0027] The transition bushing 2 is also equipped with a spindle temperature acquisition sensor to collect the spindle temperature and feed it back to the temperature control device for closed-loop control of the spindle temperature. This ensures that the temperature fluctuation of the machine spindle is small during high-speed and high-precision machining, avoids thermal errors caused by temperature changes, and achieves the goal of high-precision machining of the machine tool spindle.
[0028] Specific Implementation Method Five: Combining Figures 1 to 5 This embodiment differs from specific embodiment four in that the sliding drive unit includes a lower bearing seat 7, a ball screw 8, an upper bearing seat 13, a second coupling 14, a bracket 15, and a power module. The bracket 15 is vertically mounted on the upper part of the slide body 6, with its top extending beyond the top of the slide body 6 and positioned above it. The ball screw 8 is vertically positioned within the bracket 15, and its upper and lower ends are rotatably connected to the bracket 15 via the upper bearing seat 13 and the lower bearing seat 7, respectively. The power module is located on top of the bracket 15, and its housing is detachably connected to the bracket 15 via bolts. The power output end of the power module extends into the interior of the bracket 15 and is connected to the top of the ball screw 8 via the second coupling 14. The power input end of the power module is connected to an external power source via a wire. Other components and connections are the same as in specific embodiment four.
[0029] Specific Implementation Method Six: Combination Figures 1 to 5 This embodiment differs from specific embodiment five in that the power module includes a reducer 16 and a servo motor 17. The reducer 16 is mounted on the power output end of the servo motor 17, and the housing of the reducer 16 is detachably connected to the housing of the servo motor 17. The high-speed power input end of the reducer 16 is connected to the power output end of the servo motor 17. The reducer 16 is mounted on the top of the bracket 15, and the housing of the reducer 16 is detachably connected to the bracket 15 by bolts. The low-speed power output end of the reducer 16 extends into the interior of the bracket 15 and is connected to the top of the ball screw 8 via a second coupling 14. The power input end of the servo motor 17 is connected to an external power source via a wire. Other components and connections are the same as in specific embodiment five.
[0030] Specific implementation method seven: Combining Figures 1 to 5 This embodiment differs from Specific Embodiment Six in that the slide unit includes a positioning and fixing bolt 9, a slide 10, a screw nut mounting bracket 11, and a screw nut 12. The screw nut 12 is sleeved on the ball screw 8 and threadedly connected to the ball screw 8. One end of the screw nut mounting bracket 11 is mounted on the screw nut 12, and the other end of the screw nut mounting bracket 11 extends to the outside of the bracket 15 and is fastened to the slide 10 by the positioning and fixing bolt 9. Other components and connection methods are the same as in Specific Embodiment Six.
[0031] Referring to the descriptions of specific embodiments five and seven, in this embodiment, the driving structure between the slide block 10 and the ram body 6 is a lead screw and nut structure. In this application, the lead screw nut 12 is used to fix the slide block 10, and the lead screw nut 12 is threadedly connected to the ball screw 8. During operation, the lead screw nut 12 is fixed to the slide block 10, and the ball screw 8 rotates in both directions under the drive of the servo motor 17, driving the ram body 6 to move up and down reciprocally relative to the slide block 10. In order to ensure the working stability of the ram body 6, guide rail structures are also provided on both sides of the slide block 10. The guide rail structures constrain and guide the ram body 6 on both sides, ensuring the accuracy of the ram body 6's movement trajectory.
[0032] When the vertical stroke of a gantry milling machine is large, the ball screw 8 needs to be also long. The larger size causes errors in the machining of the positioning surfaces during the machining process. However, to ensure the running accuracy of the ball screw 8, it is necessary to ensure that the center lines of the lower bearing housing 7, the upper bearing housing 13, and the nut mounting bracket 11 are coaxial and on a straight line during assembly. Therefore, this invention adopts a relatively simple method. First, a first inspection sleeve 19 is made according to the inner hole of the upper bearing housing 13. The outer circle of the first inspection sleeve 19 has a high-precision fit with the inner hole of the bearing housing 13, and the inner hole of the first inspection sleeve 19 has a high-precision fit with the outer circle of the inspection bar 20. The length of the inspection bar 20 is generally around 500mm. Similarly, second inspection sleeves 21 and third inspection sleeves 22 are made, so that their outer circles have a high-precision fit with the inner holes of the nut mounting bracket 11 and the lower bearing housing 7, respectively, and their inner hole dimensions are consistent with the first inspection sleeve 19. First, insert the test bar 20 into the inner hole of the second test sleeve 21. Then, use a crane to move the position of the slide block so that the first test sleeve 19 is closer to the second test sleeve 21. When the distance between them is less than the length of the test bar, adjust the spatial position of the screw nut mounting bracket 11 in both directions to ensure that the test bar can be inserted into both the first test sleeve 19 and the second test sleeve 21 at the same time. After the previous operation, insert the test bar 20 into the second test sleeve 21 again. Move the slide block in the opposite direction so that the third test sleeve 22 is closer to the second test sleeve 21 and the distance between them is less than the length of the test bar 20. Then, adjust the spatial position of the lower bearing seat 7 in both directions so that the test bar 20 can be inserted into the inner holes of both the second test sleeve 21 and the third test sleeve 22 at the same time. This proves that the upper bearing seat 13, the lower bearing seat 7 and the inner hole of the screw nut mounting bracket 11 are coaxial and can be fitted with positioning pins. Then, remove the test bar and test sleeve and install the bearing and screw.
[0033] Specific implementation method eight: Combination Figures 1 to 5This embodiment differs from specific embodiment seven in that a hydraulic cylinder 18 is provided on each side of the slide body 6. The cylinder body of each hydraulic cylinder 18 is fixedly connected to the slide block 10 by bolts, and the piston rod end of each hydraulic cylinder 18 is fixedly connected to the slide body 6 by a connecting block. Other components and connection methods are the same as in specific embodiment seven.
[0034] In this embodiment, considering that the ram body 6 itself is relatively heavy, hydraulic cylinders 18 for balancing weight are arranged on both sides of the ram body 6. The hydraulic cylinders 18 provide propulsion force by extending and retracting, thereby reducing the driving force of the sliding drive unit.
[0035] The present invention has been disclosed above with reference to preferred embodiments, but it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
[0036] Working principle
[0037] The integrated high-speed and high-precision milling ram assembly provided in this application first installs each component according to the connection relationship and debugging method described in specific embodiments one to eight. During use, the ball screw 8 is driven to rotate forward and backward by the servo motor 17. With the forward and backward rotation of the ball screw 8, relative movement is generated between the ball screw 8 and the nut 12. Since the nut 12 is fixed, the ball screw 8 moves up and down in the direction of the axis extension of the nut 12. At the same time, the ram body 6 moves up and down in the vertical direction relative to the slide 10, so as to adjust the longitudinal working position of the milling machine tool and the feed action of the tool.
[0038] The milling cutter is mounted on the machine spindle 1. When the built-in motor 5 located in the slide body 6 drives the machine spindle 1 to rotate, it drives the milling cutter to rotate synchronously to achieve the cutting action.
Claims
1. An integrated high-speed, high-precision milling ram assembly, the ram assembly comprising a sliding drive unit, a rotating spindle unit, and a ram body (6), characterized in that: The sliding drive unit is embedded in the upper part of the slide body (6), and the power end of the sliding drive unit extends out of the top of the slide body (6) and is located above the slide body (6). The rotating spindle unit is embedded in the lower part of the slide body, and the power output end of the rotating spindle unit extends out of the bottom of the slide body (6) and is located below the slide body (6). The slide body (6) is constrained on the slide unit by the sliding drive unit and the guide rail, and the slide body (6) can realize reciprocating motion in the vertical direction within the slide unit.
2. The integrated high-speed, high-precision milling slide assembly according to claim 1, characterized in that: The rotating spindle unit includes a mechanical spindle (1), a No. 1 coupling (3), and a built-in motor (5). The built-in motor (5) is embedded in the lower part of the slide body (6), and the power output shaft of the built-in motor (5) is set vertically downward. The power input end of the built-in motor (5) is connected to an external power source through a wire. The mechanical spindle (1) is set below the built-in motor (5). One end of the mechanical spindle (1) is connected to the power output shaft of the built-in motor (5) through the No. 1 coupling (3), and the other end of the mechanical spindle (1) extends vertically out of the bottom of the slide body (6) and is set below the slide body (6).
3. The integrated high-speed, high-precision milling slide assembly according to claim 1, characterized in that: The built-in motor (5) is positioned with the slide body (6) by multiple slide lateral set screws (4).
4. The integrated high-speed, high-precision milling slide assembly according to claim 3, characterized in that: A transition bushing (2) is installed on the outside of the mechanical spindle (1), and the transition bushing (2) is arranged inside the slide body (6). The transition bushing (2) is equipped with a mechanical spindle coolant supply line, which passes through the inside of the slide body (6) and supplies coolant.
5. An integrated high-speed, high-precision milling slide assembly according to claim 4, characterized in that: The sliding drive unit includes a lower bearing housing (7), a ball screw (8), an upper bearing housing (13), a second coupling (14), a bracket (15), and a power module. The bracket (15) is vertically mounted on the upper part of the ram body (6), and the top of the bracket (15) extends out of the top of the ram body (6) and is positioned above the ram body (6). The ball screw (8) is vertically positioned in the bracket (15), and the upper and lower ends of the ball screw (8) are rotatably connected to the bracket (15) through the upper bearing housing (13) and the lower bearing housing (7), respectively. The power module is positioned on the top of the bracket (15), and the power module housing is detachably connected to the bracket (15) by bolts. The power output end of the power module extends into the interior of the bracket (15) and is connected to the top of the ball screw (8) through the second coupling (14). The power input end of the power module is connected to an external power source through a wire.
6. The integrated high-speed, high-precision milling slide assembly according to claim 5, characterized in that: The power module includes a reducer (16) and a servo motor (17). The reducer (16) is located on the power output end of the servo motor (17), and the housing of the reducer (16) is detachably connected to the housing of the servo motor (17). The high-speed power input end of the reducer (16) is connected to the power output end of the servo motor (17). The reducer (16) is located on the top of the bracket (15), and the housing of the reducer (16) is detachably connected to the bracket (15) by bolts. The low-speed power output end of the reducer (16) extends into the interior of the bracket (15) and is connected to the top of the ball screw (8) through the No. 2 coupling (14). The power input end of the servo motor (17) is connected to an external power source through a wire.
7. An integrated high-speed, high-precision milling slide assembly according to claim 6, characterized in that: The slide unit includes a positioning and fixing bolt (9), a slide (10), a nut mounting bracket (11), and a nut (12). The nut (12) is sleeved on the ball screw (8) and is threadedly connected to the ball screw (8). One end of the nut mounting bracket (11) is mounted on the nut (12), and the other end of the nut mounting bracket (11) extends to the outside of the bracket (15) and is fastened to the slide (10) by the positioning and fixing bolt (9).
8. An integrated high-speed, high-precision milling slide assembly according to claim 7, characterized in that: A hydraulic cylinder (18) is provided on each side of the ram body (6). The cylinder body of each hydraulic cylinder (18) is fixedly connected to the slide seat (10) by bolts, and the piston rod end of each hydraulic cylinder (18) is fixedly connected to the ram body (6) by a connecting block.