Fully automatic horizontal machining center

Abstract

The present invention belongs to the technical field of machine tools. Disclosed is a fully automatic horizontal machining center, comprising a square frame, a tool feed system, a cradle, a left support base, a right support base, a servo rotary drive device and a brake device, wherein the tool feed system is arranged on the square frame; the cradle is configured to clamp and carry a workpiece to be machined; the left support base and the right support base are respectively arranged at left and right ends of the square frame; a left support shaft on the cradle is mounted on the left support base by means of a bearing, a right support shaft on the cradle is mounted on the right support base by means of a bearing, and the left support shaft and the right support shaft are coaxially mounted; the servo rotary drive device is configured to drive the left support shaft to rotate, and the brake device is configured to restrict rotation of the right support shaft; and the cradle is a grid-like frame plate structure made of a material having a light weight and a strong carrying capacity. In the present application, the cradle is designed with the grid-like frame plate structure, and a horizontal rotation system is omitted from the cradle, which can greatly reduce the weight of the cradle itself to reduce inertia during movement, so as to improve the displacement accuracy of the cradle, thereby improving machining accuracy and stability of the machining center.

Description

A fully automatic horizontal machining center Technical Field

[0001] This invention relates to the field of machine tool technology, specifically to a fully automatic horizontal machining center. Background Technology

[0002] CNC machine tools, short for Computer Numerical Control machine tools, are automated machine tools equipped with a program control system. This control system logically processes programs with control codes or other symbolic instructions, decodes them, represents them with coded numbers, and inputs them into the CNC device via an information carrier. After processing, the CNC device sends various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings. Machining centers, on the other hand, are highly automated, multi-functional CNC machine tools equipped with tool magazines and automatic tool changers.

[0003] Horizontal machining centers are important equipment in modern manufacturing and are widely used in various fields such as automotive, aerospace, and mold manufacturing. However, traditional horizontal machining centers still have some limitations in terms of processing efficiency and accuracy maintenance.

[0004] As a key component of horizontal machining centers, the cradle supports the workpiece and enables its rotational motion, playing a crucial role in milling, turning, grinding, and other machining processes. However, traditional cradles have many shortcomings in terms of displacement accuracy, stability, and wear resistance. With the continuous improvement of manufacturing requirements for machining accuracy and efficiency, existing machine tool cradles are no longer sufficient to meet the demands of high-precision and high-stability machining.

[0005] Firstly, in terms of precision, traditional cradles not only flip under the drive of a flipping motor, but also have a rotary drive system in the middle of the cradle body that can rotate horizontally to adjust the processing position of the workpiece on the cradle. This mechanism makes the cradle larger and heavier, and it has a certain inertia when flipping. The cradle may generate large errors during rotation, thus affecting the processing precision of the workpiece.

[0006] Secondly, stability is also a challenge in traditional cradle design. Under high-speed rotation or heavy-load conditions, the cradle may vibrate or deform, which can not only affect machining accuracy but also damage other parts of the machine tool.

[0007] In addition, severe wear and tear is a common problem in traditional cradle designs. Because cradles need to withstand large loads and friction during operation, their surfaces and internal components are prone to wear, leading to performance degradation and even the need for frequent replacement.

[0008] Furthermore, horizontal machining centers use cutting oil or coolant during operation. If these liquids remain on the guide rail surface, they mix with dust to form sludge, increasing the friction of the guide rails. Therefore, existing horizontal machining centers rely on manual, periodic cleaning of the guide rails to remove sludge. During cleaning, workers use a clean cloth or paper towel dampened with a suitable amount of detergent to gently wipe the guide rail surface to remove oil and coolant. After wiping, the guide rail surface must be dried with a clean, dry cloth. This existing technology, relying on manual, periodic cleaning, is not only cumbersome but, more importantly, the sludge cannot be removed promptly, causing wear on the guide rails. Minor wear may manifest as a decrease in surface gloss or the appearance of fine scratches, while severe wear may lead to noticeable dents or grooves on the guide rail surface, affecting the rapid movement and accurate positioning of the feed system. Summary of the Invention

[0009] To address the aforementioned problems, the present invention aims to provide a fully automatic horizontal machining center that can improve machining accuracy and stability.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0011] A fully automatic horizontal machining center includes a square frame, a tool feed system, a cradle, a left support base, a right support base, a servo rotary drive device, and a braking device. The tool feed system is mounted on the square frame. The cradle is used to clamp and support the workpiece to be machined. The left and right support bases are located at the left and right ends of the square frame. The left support shaft on the cradle is mounted on the left support base via a bearing, and the right support shaft on the cradle is mounted on the right support base via a bearing. The left and right support shafts are coaxially mounted. The servo rotary drive device is used to drive the left support shaft to rotate, and the braking device is used to limit the rotation of the right support shaft. The cradle is a grid-like frame structure made of a lightweight and high-load-bearing material.

[0012] Furthermore, the cradle includes a grid-shaped upper shelf and a grid-shaped lower shelf, with multiple vertical connecting rods provided between the grid-shaped upper shelf and the grid-shaped lower shelf.

[0013] Furthermore, an anti-wear pad is provided on the surface of the grid-shaped upper shelf, and the anti-wear pad is fixed to the grid-shaped upper shelf by fastening screws.

[0014] Furthermore, a laser interferometer is provided on the left support base. The laser interferometer is used to detect the rotational position accuracy of the left support shaft in real time. The control unit in the servo rotation drive device compensates for the rotational position error of the cradle according to the rotational position accuracy.

[0015] Furthermore, the tool feed system is provided in three sets: one set of tool feed system is provided on the front side of the square frame, and two sets of tool feed system are provided on the rear side of the square frame.

[0016] Furthermore, the tool feed system includes an X-axis moving frame, a Y-axis moving frame, a load-bearing crossbeam, a counterweight, a horizontal steering device, a steering beam, a bidirectional output servo motor, a positive helical screw, a negative helical screw, a double slide rail, a spindle drive box, and a counterweight slide. The spindle end of the spindle drive box is used to clamp the tool. The X-axis moving frame is mounted on the X-axis slide rail located on the square frame and is driven by the X-axis linear motor on the square frame. The Y-axis moving frame is mounted on the Y-axis slide rail located on the X-axis moving frame and is driven by the Y-axis linear motor on the X-axis moving frame. The load-bearing crossbeam is inserted and fixed on the Y-axis moving frame. The counterweight is located at one end of the load-bearing crossbeam, and the horizontal steering device is installed at the other end of the load-bearing crossbeam. A horizontal steering device is installed on the steering beam to drive it and adjust its tilt angle in the horizontal direction. A double slide rail is mounted on the steering beam and arranged along its length. A bidirectional output servo motor is located in the middle of the steering beam between the double slide rails. A main spindle drive box is mounted on the double slide rails and located on one side of the bidirectional output servo motor. A counterweight slide is mounted on the double slide rails and located on the other side of the bidirectional output servo motor. The bidirectional output servo motor drives the main spindle drive box and the counterweight slide to slide in opposite directions along the double slide rails via a positive helical screw and a negative helical screw, respectively. A shaft locking device is provided on the power output vertical shaft of the horizontal steering device to restrict its rotation.

[0017] Furthermore, the tool feed system also includes a real-time dust removal and oiling device for the guide rail, which is provided at both ends of the X-axis moving frame and both ends of the Y-axis moving frame.

[0018] Furthermore, the real-time dust removal and oiling device for the guide rail includes a dust removal and oiling hood. The dust removal and oiling hood has a left receiving groove and a right receiving groove. The left receiving groove has a guide rail dust removal wiping block, and the right receiving groove has a guide rail oiling sponge block. The top of the dust removal and oiling hood has an oil storage box. The bottom of the oil storage box is connected to the right receiving groove through an oil guide pipe. The oil guide pipe has an oil guide cotton rod. The lubricating oil in the oil storage box is guided to the guide rail oiling sponge block through the oil guide cotton rod. The dust removal and oiling hood has a mounting plate at one end near the guide rail oiling sponge block. The mounting plate is connected to the X-axis moving frame or the Y-axis moving frame by screws.

[0019] Furthermore, the X-axis linear motor and the Y-axis linear motor are Rexroth brand linear motors with a thrust of up to 21KN; the moving speed of the X-axis moving frame and the Y-axis moving frame is up to 120 meters / minute.

[0020] Furthermore, the spindle drive box has a power of 22.4KW and a spindle speed of up to 24000rpm.

[0021] The beneficial effects of this invention are as follows:

[0022] The cradle in this application features a grid-like frame structure design and removes the horizontal rotation system of the cradle, which greatly reduces the weight of the cradle itself, reduces the inertia of movement, and improves the displacement accuracy of the cradle, thereby improving the machining accuracy and stability of the machining center.

[0023] This application adds a laser interferometer, which enables real-time detection of the rotational position accuracy of the left support shaft, thereby achieving closed-loop control of the servo rotary drive device to compensate for rotational position errors in real time, thus further improving the displacement accuracy of the cradle.

[0024] This application features anti-wear pads on the surface of the grid-like upper frame. These pads are typically installed in easily worn areas of the cradle. Once worn, the pads can be replaced, eliminating the need to replace the entire cradle. This addresses the problem of frequent cradle replacements caused by the cradle's surface and internal components easily wearing down due to the significant loads and friction it withstands during operation.

[0025] This application also includes a real-time dust removal and oiling device for the guide rails. This device can remove contaminants such as chips, dust, and coolant that fall on the guide rails in real time, effectively preventing contaminants from entering between the guide rails and the sliders, greatly reducing guide rail wear, extending the service life of the guide rails, ensuring the machining accuracy and operational stability of the machining center, and reducing the maintenance and operation costs of the guide rails.

[0026] The tool feed system of this application adopts a frame-within-a-frame structure. The spindle drive box is adjusted by tilting the head. The spindle drive box is very heavy and has a long stroke. Since this application uses a counterweight slide that moves synchronously and in the opposite direction to the spindle drive box, the overall center of gravity of the steering beam can always be kept directly above the horizontal steering device. This solves the problem that the overall center of gravity of the steering beam does not change because the spindle drive box is movable, which causes the components of the horizontal steering device to deform due to the overall center of gravity of the steering beam deviating from the horizontal steering device. Attached Figure Description

[0027] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort:

[0028] Figure 1 is a schematic diagram of the structure of the present invention;

[0029] Figure 2 is a side view of the figure shown in Figure 1;

[0030] Figure 3 is a top view of the figure shown in Figure 1;

[0031] Figure 4 is a schematic diagram of the structure of the cradle shown in Figure 3.

[0032] Figure 5 shows the arrangement of the load-bearing crossbeam shown in Figure 1 on the Y-axis moving frame;

[0033] Figure 6 shows the arrangement of the counterweight slide and main shaft drive box on the steering beam as shown in Figure 5.

[0034] Figure 7 is a schematic diagram of the internal structure of the real-time dust removal and oiling device for the guide rail shown in Figure 1.

[0035] Figure 8 is a perspective view of the real-time dust removal and oiling device for the guide rail shown in Figure 7.

[0036] In the diagram: 1. Square frame; 2. Tool feed system; 3. Cradle; 4. Left support; 5. Right support; 6. Servo rotary drive; 7. Braking device; 8. Left support shaft; 9. Right support shaft; 10. X-axis moving frame; 11. Y-axis moving frame; 12. Horizontal steering device; 13. Steering beam; 14. Bidirectional output servo motor; 15. Positive helical screw; 16. Reverse helical screw; 17. Double slide rail; 18. Spindle drive box; 19. Counterweight slide; 20. X-axis slide rail; 21. X-axis linear motor; 22. 23. Y-axis slide rail; 24. Y-axis linear motor; 25. Load-bearing crossbeam; 26. Counterweight; 27. Rotary shaft locking device; 28. Grid-shaped upper frame plate; 29. ​​Grid-shaped lower frame plate; 30. Vertical connecting rod; 31. Guide rail real-time dust removal and oiling device; 32. Dust removal and oiling cover; 33. Left receiving groove; 34. Right receiving groove; 35. Guide rail dust removal wiping block; 36. Guide rail oiling sponge block; 37. Oil storage box; 38. Oil guide pipe; 39. Oil guide cotton rod; 40. Mounting plate; 41. Anti-wear pad; 42. Fastening screw; 43. Laser interferometer. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper surface," "lower surface," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "forward," "reverse," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] As shown in Figures 1, 2, 3, 4, 5, and 6, the fully automatic horizontal machining center includes a square frame 1, a tool feed system 2, a cradle 3, a left support 4, a right support 5, a servo rotary drive 6, and a braking device 7. The tool feed system 2 is mounted on the square frame 1. The cradle 3 is used to clamp and support the workpiece. The left support 4 and right support 5 are respectively located at the left and right ends of the square frame 1. The left support shaft 8 on the cradle 3 is mounted on the left support 4 via bearings, and the right support shaft 9 on the cradle 3 is mounted on the right support 5 via bearings. The left support shaft 8 and right support shaft 9 are coaxially mounted. The servo rotary drive 6 is used to drive the left support shaft 8 to rotate, and the braking device 7 is used to restrict the rotation of the right support shaft 5. The cradle 3 is a grid-shaped frame structure made of a lightweight and high-load-bearing material. The cradle 3 includes a grid-shaped upper frame plate 27 and a grid-shaped lower frame plate 28, with multiple vertical connecting rods 29 between the grid-shaped upper frame plate 27 and the grid-shaped lower frame plate 28. A wear-resistant pad 40 is provided on the surface of the grid-shaped upper frame plate 27. The wear-resistant pad 40 is fixed to the grid-shaped upper frame plate 27 by fastening screws 41. The wear-resistant pad 40 is usually installed in the easily worn parts of the cradle 3. When the wear-resistant pad 40 is worn, it can be replaced, and the cradle 3 does not need to be replaced. This solves the problem of frequent cradle replacement caused by the cradle's surface and internal parts being easily worn due to the large load and friction it needs to withstand during operation.

[0040] A laser interferometer 42 is provided on the left support 4. The laser interferometer 42 is used to detect the rotational position accuracy of the left support shaft 8 in real time. The control unit in the servo rotary drive device 6 compensates for the rotational position error of the cradle 3 based on the rotational position accuracy. This application enables the servo rotary drive device 6 to achieve closed-loop control with real-time compensation for rotational position error by detecting the rotational position accuracy of the left support shaft 8 in real time through the laser interferometer 42.

[0041] The tool feed system 2 is provided in three sets. One set of tool feed system 2 is located on the front side of the square frame 1, and two sets of the tool feed system are located on the rear side of the square frame 1.

[0042] The tool feed system 2 includes an X-axis moving frame 10, a Y-axis moving frame 11, a supporting crossbeam 24, a counterweight 25, a horizontal steering device 12, a steering beam 13, a bidirectional output servo motor 14, a positive helical screw 15, a negative helical screw 16, a double slide rail 17, a spindle drive box 18, and a counterweight slide 19. The spindle end of the spindle drive box 18 is used to clamp the tool. The X-axis moving frame 10 is mounted on the X-axis slide rail 20 located on the square frame 1 and is driven by the X-axis linear motor 21 on the square frame 1. The Y-axis moving frame 11 is mounted on the Y-axis slide rail 22 located on the X-axis moving frame 10 and is driven by the Y-axis linear motor 23 on the X-axis moving frame 10. The supporting crossbeam 24 is inserted and fixed on the Y-axis moving frame 11. The counterweight 25 is located at one end of the supporting crossbeam 24, and the horizontal steering device 12 is installed at the other end of the supporting crossbeam 24. A beam 13 is mounted on a horizontal steering device 12, which drives the steering beam to adjust the tilt angle of the steering beam 13 in the horizontal direction. A double slide rail 17 is mounted on the steering beam 13 and arranged along its length. A bidirectional output servo motor 14 is located in the middle of the steering beam 13 and between the double slide rails 17. A main spindle drive box 18 is mounted on the double slide rails 17 and located on one side of the bidirectional output servo motor 14. A counterweight slide 19 is mounted on the double slide rails 17 and located on the other side of the bidirectional output servo motor 14. The bidirectional output servo motor 14 drives the main spindle drive box 18 and the counterweight slide 19 to slide in opposite directions along the double slide rails 17 via a positive helical screw 15 and a negative helical screw 16, respectively. A shaft locking device 26 is provided on the power output vertical shaft of the horizontal steering device 12 to restrict the rotation of the power output vertical shaft. This application employs a counterweight to avoid deformation of the guide rail or components of the horizontal steering device 12 due to a significant shift in the center of gravity. In particular, it employs a counterweight slide 19 that moves synchronously and in the opposite direction to the main spindle drive box 18, ensuring that the overall center of gravity of the steering beam 13 is always directly above the horizontal steering device 12. This solves the problem that because the main spindle drive box 18 is movable, the overall center of gravity of the steering beam 13 remains unchanged, thus causing deformation of the components of the horizontal steering device 12 due to the overall center of gravity of the steering beam 13 shifting from the horizontal steering device 12.

[0043] The tool feed system 2 also includes a real-time dust removal and oiling device 30 for the guide rail. The real-time dust removal and oiling device 30 is provided at both ends of the X-axis moving frame 10 and both ends of the Y-axis moving frame 11.

[0044] As shown in Figures 7 and 8, the real-time dust removal and oiling device 30 for the guide rail includes a dust removal and oiling cover 31. The dust removal and oiling cover 31 has a left receiving groove 32 and a right receiving groove 33. The left receiving groove 32 has a guide rail dust removal wiping block 34, and the right receiving groove 33 has a guide rail oiling sponge block 35. The top of the dust removal and oiling cover 31 has an oil storage box 36. The bottom of the oil storage box 36 is connected to the right receiving groove 33 through an oil guide pipe 37. The oil guide pipe 37 has an oil guide cotton rod 38. The lubricating oil in the oil storage box 36 is guided to the guide rail oiling sponge block 35 through the oil guide cotton rod 38. The dust removal and oiling cover 31 has an installation plate 39 at one end near the guide rail oiling sponge block 35. The installation plate 39 is connected to the X-axis moving frame 10 or the Y-axis moving frame 11 by screws. This device can remove contaminants such as chips, dust, and coolant that fall on the guide rails in real time, effectively preventing contaminants from entering between the guide rails and the sliders. This greatly reduces wear on the guide rails, extends their service life, ensures the machining accuracy and operational stability of the machining center, and eliminates the need for manual cleaning, thus reducing the maintenance costs of the guide rails.

[0045] In this embodiment, the X-axis and Y-axis linear motors in the tool feed system 2 are Rexroth brand linear motors with a thrust of up to 21KN; the X-axis and Y-axis moving frames have a moving speed of up to 120 m / min, and are particularly characterized by high response, with the linear axis acceleration of the X-axis and Y-axis moving frames reaching 1G. The spindle drive box has a power of 22.4KW, and its spindle speed reaches up to 24000rpm.

[0046] The fully automatic horizontal machining center also includes a tool magazine, which is used to change the tools on the spindle of the spindle drive box. The tool magazine is selected as an HSK-A63 type tool magazine with 40 or 48 tools.

[0047] This application also incorporates the following measures for the machining center:

[0048] Cradle structure optimization design

[0049] To enhance the rigidity and stability of the cradle's rotating parts, high-strength materials are used, and the structural design is optimized to reduce deformation and vibration.

[0050] Bearing and guide rail upgrade

[0051] High-precision, low-friction, and long-life bearings and guideways are selected to ensure smooth rotation and reduce wear.

[0052] Drive and control system upgrade

[0053] High-precision servo motors and drivers are used, and the control algorithm is optimized to improve position control accuracy and response speed.

[0054] 4. Precision Detection and Compensation System

[0055] A high-precision measuring tool—a laser interferometer—is installed to monitor the cradle rotation accuracy in real time, and error compensation is performed based on the monitoring results.

[0056] 5. Environmental Control

[0057] Maintain a constant temperature and humidity in the machine tool's working environment to reduce the impact of temperature changes on the machine tool's accuracy.

[0058] 6. Dynamic balance adjustment of cradle rotating components

[0059] Dynamically balance the rotating parts of the cradle to reduce vibration and noise caused by imbalance.

[0060] 7. Servo motor parameter optimization

[0061] Adjust the parameters of the servo motor (such as gain and speed) according to the actual processing requirements to obtain better control results.

[0062] 8. Feedback system upgrade

[0063] Upgrade the machine tool's feedback system by using higher-precision sensors to improve the accuracy and real-time performance of position detection.

[0064] 9. Heat treatment and surface treatment of materials for cradle rotating components

[0065] Heat treatment and surface treatment are applied to the rotating parts of the cradle to improve their hardness and wear resistance, thereby extending their service life.

[0066] Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those embodiments or examples, without contradiction. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A fully automatic horizontal machining center, characterized in that: The device includes a square frame, a tool feed system, a cradle, a left support base, a right support base, a servo rotary drive, and a braking device. The tool feed system is mounted on the square frame. The cradle is used to clamp and support the workpiece being processed. The left and right support bases are located at the left and right ends of the square frame. The left support shaft on the cradle is mounted on the left support base via a bearing, and the right support shaft on the cradle is mounted on the right support base via a bearing. The left and right support shafts are coaxially mounted. The servo rotary drive is used to drive the left support shaft to rotate, and the braking device is used to limit the rotation of the right support shaft. The cradle is a grid-like frame structure made of a lightweight and high-load-bearing material.

2. The fully automatic horizontal machining center according to claim 1, characterized in that: The cradle includes a grid-shaped upper shelf and a grid-shaped lower shelf, with multiple vertical connecting rods between the grid-shaped upper shelf and the grid-shaped lower shelf.

3. The fully automatic horizontal machining center according to claim 2, characterized in that: Abrasion-resistant pads are provided on the surface of the grid-shaped upper shelf, and the abrasion-resistant pads are fixed to the grid-shaped upper shelf by fastening screws.

4. The fully automatic horizontal machining center according to claim 1, characterized in that: A laser interferometer is provided on the left support base. The laser interferometer is used to detect the rotational position accuracy of the left support shaft in real time. The control unit in the servo rotation drive device compensates for the rotational position error of the cradle according to the rotational position accuracy.

5. The fully automatic horizontal machining center according to claim 1, characterized in that: The tool feed system is provided in three sets: one set is located on the front side of the square frame, and two sets are located on the rear side of the square frame.

6. The fully automatic horizontal machining center according to claim 1, characterized in that: The tool feed system includes an X-axis moving frame, a Y-axis moving frame, a load-bearing crossbeam, a counterweight, a horizontal steering device, a steering beam, a bidirectional output servo motor, a positive helical screw, a negative helical screw, a double slide rail, a spindle drive box, and a counterweight slide. The spindle end of the spindle drive box is used to clamp the tool. The X-axis moving frame is mounted on the X-axis slide rail located on the square frame and is driven by the X-axis linear motor on the square frame. The Y-axis moving frame is mounted on the Y-axis slide rail located on the X-axis moving frame and is driven by the Y-axis linear motor on the X-axis moving frame. The load-bearing crossbeam is inserted and fixed on the Y-axis moving frame. The counterweight is located at one end of the load-bearing crossbeam. The steering device is installed at the other end of the load-bearing crossbeam. The steering beam is installed on the horizontal steering device, which is used to drive the steering beam to adjust the tilt angle of the steering beam in the horizontal direction. The double slide rails are installed on the steering beam and arranged along the length of the steering beam. The bidirectional output servo motor is located in the middle of the steering beam and between the double slide rails. The main spindle drive box is installed on the double slide rails and located on one side of the bidirectional output servo motor. The counterweight slide is installed on the double slide rails and located on the other side of the bidirectional output servo motor. The bidirectional output servo motor drives the main spindle drive box and the counterweight slide to slide in opposite directions along the double slide rails through the positive helical screw and the negative helical screw, respectively. A shaft locking device is provided on the power output vertical shaft of the horizontal steering device to restrict the rotation of the power output vertical shaft.

7. The fully automatic horizontal machining center according to claim 4, characterized in that: The tool feed system also includes a real-time dust removal and oiling device for the guide rail, which is provided at both ends of the X-axis moving frame and both ends of the Y-axis moving frame.

8. The fully automatic horizontal machining center according to claim 3, characterized in that: The real-time dust removal and oiling device for the guide rail includes a dust removal and oiling hood. The dust removal and oiling hood has a left receiving groove and a right receiving groove. The left receiving groove has a guide rail dust removal wiping block, and the right receiving groove has a guide rail oiling sponge block. The top of the dust removal and oiling hood has an oil storage box. The bottom of the oil storage box is connected to the right receiving groove through an oil guide pipe. The oil guide pipe has an oil guide cotton rod. The lubricating oil in the oil storage box is guided to the guide rail oiling sponge block through the oil guide cotton rod.

9. The fully automatic horizontal machining center according to claim 3, characterized in that: The X-axis linear motor and Y-axis linear motor are Rexroth brand linear motors with a thrust of up to 21KN; the moving speed of the X-axis moving frame and Y-axis moving frame is up to 120 meters / minute.

10. The fully automatic horizontal machining center according to claim 3, characterized in that: The spindle drive box has a power of 22.4KW and a spindle speed of up to 24000rpm.

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