High-stability five-axis machine tool sliding rail system

Abstract

The high-stability five-axis machine tool sliding rail system comprises a horizontal feeding mechanism and a longitudinal feeding mechanism, the longitudinal feeding mechanism is connected to the horizontal feeding mechanism in a sliding mode, the horizontal feeding mechanism comprises a sliding base and a connecting supporting ridge, and the sliding base comprises a pair of bottom plates protruding downwards; a first sliding block connecting hole is formed in the side face of the bottom plate, the connecting supporting ridge is arranged above the sliding base, a top sliding rail groove and a lateral sliding rail groove are formed in the connecting supporting ridge, and the longitudinal feeding mechanism is provided with a top connecting arm and a vertical connecting arm corresponding to the top sliding rail groove and the lateral sliding rail groove correspondingly. A driving connecting plate is arranged at the connecting included angle of the top connecting arm and the vertical connecting arm, the top sliding rail groove and the lateral sliding rail groove are connected through a lead screw installation inclined plate, a sliding rail system for shortening a force arm and utilizing wind resistance is arranged, part of unnecessary vibration generated when the main shaft works is eliminated, the working precision of a machine tool is guaranteed, and the working efficiency of the machine tool is improved. The quality of finished products is ensured and the production benefit is improved.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool equipment, and in particular to a high-stability five-axis machine tool slide rail system. Background Art

[0002] Machine tools are essential basic equipment in modern industrial production and are widely used in automobile manufacturing. With the rapid development of the manufacturing industry, the machine tool industry has also ushered in new development opportunities. The demand for CNC machine tools is increasing due to their high precision. As an important market for global machine tool consumption and production, China's machine tool industry output value and consumption are among the highest in the world.

[0003] The stability of the machine tool spindle has a vital impact on the machining accuracy and surface quality. In recent years, with the widespread application of CNC machine tools, spindle accuracy and stability have become key factors in improving machining quality. The radial rotation error of the spindle is one of the important factors affecting its accuracy and stability. Testing and vibration modal research on it can be used for prediction and compensation of machine tool processing, thereby improving the machining accuracy and surface quality of parts.

[0004] In terms of technological progress, domestic and foreign scholars have conducted extensive research on modal simulation calculation methods and rotation error test methods for machine tool spindles. For example, the natural frequency of the electric spindle is obtained through modal analysis, which provides an analytical basis for the structural design of high-speed electric spindles and the determination of the optimal preload of bearings. In addition, the spindle-casing vibration transmission mechanical model in high-speed electric spindles based on Hertz theory and least squares theory, as well as the simplification and determination of certain parameters of the electric spindle using the multi-body transfer matrix method, are important technical means to improve the stability of the spindle.

[0005] In practical applications, spindle stability issues can be analyzed and resolved in a variety of ways. In machining, jitter is usually caused by the vibration of the mechanical system. In order to reduce jitter, the following measures can be taken: Use sharp blades: Sharp blades can reduce cutting forces and vibrations.

[0006] Choose an appropriate tool tip radius: The smaller the tool tip radius, the smaller the radial cutting force, which helps reduce vibration.

[0007] Optimize cutting parameters: Reduce vibration by adjusting cutting speed, feed rate and depth of cut.

[0008] Improve system rigidity: Increasing the rigidity of mechanical components can reduce vibration.

[0009] Use damping technology: Damping can absorb vibration energy and reduce vibration transmission.

[0010] Sliding mode control: The sliding mode control method can effectively suppress jitter, especially in robot control.

[0011] In summary, the research and analysis of machine tool spindle stability is a multifaceted process involving modal analysis, which can effectively improve the stability of the machine tool spindle, thereby improving the processing performance and accuracy of the entire machine tool.

[0012] The patent with application number CN201310616924.X discloses a five-axis machining machine, including a base, a slide and a workpiece table. The base includes a body, and three first slide rails are arranged in parallel on the rear side of the body, and the slide is slidably arranged on the first slide rails; a groove is arranged on the front side of the body, and the worktable is arranged in the groove; two screws are arranged in parallel in the groove of the body, and the worktable has a screw hole through which the screws penetrate and engage so as to adjust the position of the worktable in the groove by the screws; the worktable also includes two correspondingly arranged side walls, and a processing table is arranged between the two side walls, and a disc-shaped workpiece table is arranged in the middle of the processing table, and a plurality of radially extending inverted T-shaped grooves are arranged on the upper surface of the workpiece table; thus, the present invention can perform multi-axis processing and improve processing efficiency. However, the problem that the jitter generated by the spindle affects the quality of the processed product still exists in this technical solution. Summary of the invention

[0013] The present invention provides a high-stability five-axis machine tool slide rail system, which is stably connected to a spindle chassis through the joint action of a vertical base, a side pull plate, a mounting wing and a transverse connecting ridge. A stabilizing pull rod is arranged on the side pull plate, and the stabilizing pull rod exerts an oblique upward pulling force on the side pull plate, so as to balance and weaken the vibration of the part of the spindle of the spindle chassis that passes through the spindle seat end due to the joint action of rotation and cutting of the material during the rotating operation, thereby ensuring the production accuracy of the spindle, improving the quality of the product, effectively reducing the defective rate, and improving the economic benefits.

[0014] The above technical objectives of the present invention are achieved through the following technical solutions: a high-stability five-axis machine tool slide rail system, including a horizontal feed mechanism and a longitudinal feed mechanism, the longitudinal feed mechanism can be slidably connected to the horizontal feed mechanism, and the longitudinal feed mechanism can make relative movements toward or away from the workpiece on the x-axis, the horizontal feed mechanism is a transverse mechanical structure, the horizontal feed mechanism includes a sliding base and a connecting support ridge, the sliding base includes a pair of bottom plates protruding downward, the side of the bottom plate is provided with a first slider connecting hole, the connecting support ridge is arranged above the sliding base, and a top slide rail groove and a lateral slide rail groove are arranged on the connecting support ridge, the longitudinal feed mechanism is respectively provided with a top connecting arm and a vertical connecting arm corresponding to the top slide rail groove and the lateral slide rail groove, and a driving connecting plate is provided at the connecting angle between the top connecting arm and the vertical connecting arm, The top slide rail groove and the lateral slide rail groove are connected by a screw rod mounting inclined plate, the driving connecting plate is provided with a screw rod jack corresponding to the screw rod, the vertical connecting arm is provided with Z-axis side plates protruding outward on both sides, the Z-axis side plates are provided with a third slider connecting hole, and the top connecting arm is provided with a spindle mounting frame near the vertical connecting arm.

[0015] As a preferred embodiment of the technical solution of the present invention, the connecting support ridge includes a first vertical plate, a second vertical plate, a first inclined plate, a second inclined plate and a top plate, the lateral slide rail groove is arranged on the first plate, the top slide rail groove is arranged on the top plate, the top plate and the first vertical plate are connected by a first inclined plate, the top plate and the second vertical plate are connected by a second inclined plate, the ratio of the height of the first vertical plate to the height of the second vertical plate is equal to the ratio of the length of the second inclined plate to the length of the first inclined plate; the second vertical plate is connected to a pair of dorsal balancing members outwardly, and the pair of dorsal balancing members are symmetrically arranged on the left and right sides of the second vertical plate.

[0016] As a preferred embodiment of the technical solution of the present invention, the side surface of the back balancing member is recessed inwardly to provide a blind air storage hole, and the opening of the blind air storage hole is provided with an anti-overflow ring that converges toward the center to prevent a small amount of wind from escaping.

[0017] As a preferred embodiment of the technical solution of the present invention, the back balancing member is provided with a balanced air inlet hole and a balanced air outlet hole on the other side of the air storage blind hole, and a two-way air duct is formed between the balanced air inlet hole and the balanced air outlet hole.

[0018] As a preferred embodiment of the technical solution of the present invention, the sliding base is recessed upward and provided with a right trapezoidal air passage groove, the top of the air passage groove protrudes downward and is provided with a pair of damping ribs, and the midpoint of the distance between the pair of damping ribs is on the same vertical line as the center of gravity of the horizontal feed mechanism and the longitudinal feed mechanism as a whole.

[0019] As a preferred embodiment of the technical solution of the present invention, the sliding base is provided with a first drag reduction hole on both sides of the air slot, the back balance piece is provided with a second drag reduction hole corresponding to the first drag reduction hole, the first drag reduction hole and the second drag reduction hole are coaxially arranged, and the first drag reduction hole and the second drag reduction hole are connected to form a drag reduction air duct.

[0020] As a preferred embodiment of the technical solution of the present invention, the highest heights of the first drag reducing hole and the second drag reducing hole are lower than the lowest height of the longitudinal feeding mechanism.

[0021] As a preferred embodiment of the technical solution of the present invention, an oblique pressurizing hole is further provided on the sliding base, and the oblique pressurizing hole is communicated with the drag-reducing air duct.

[0022] As a preferred embodiment of the technical solution of the present invention, the Z-axis side plate is respectively provided with a first through hole and a second through hole at the third slider connecting hole close to the top connecting arm and the vertical connecting arm, and the ratio of the aperture of the first through hole to the aperture of the second through hole is equal to the inverse ratio of the shortest distance from the axis of the screw rod to the top slide rail groove and the shortest distance from the axis of the screw rod to the lateral slide rail groove.

[0023] As a preferred embodiment of the technical solution of the present invention, a side wing extending outward is provided at the connection between the first vertical plate and the sliding base, and a second screw rod hole is provided on the side wing.

[0024] In summary, the present invention has the following beneficial effects.

[0025] 1. By setting up a slide rail system that shortens the lever arm and utilizes wind resistance, some unnecessary vibration and jitter generated by the spindle during operation can be eliminated, the accuracy of the machine tool operation can be ensured, the quality of the finished product can be guaranteed, and the production efficiency can be improved.

[0026] 2. Design a coordination mode of the horizontal feed mechanism and the longitudinal feed mechanism, the horizontal feed mechanism is divided into a sliding base and a connecting support ridge, the sliding base is connected to the machine tool worktable to realize feeding in the y-axis direction, and the connecting support ridge is slidably connected to the sliding base to realize feeding in the x-axis direction. However, unlike the traditional method, the feed amount in the x-axis direction is shortened in the technical scheme, and the ratio of the height of the first vertical plate to the height of the second vertical plate is set to be equal to the ratio of the length of the second inclined plate to the length of the first inclined plate; the second vertical plate is connected to a pair of dorsal balance members outwardly, and the pair of dorsal balance members are symmetrically arranged on the left and right sides of the second vertical plate, so as to shorten the force arm and improve stability through a specific proportional relationship.

[0027] 3. By arranging an oblique pressure hole connected to the drag reduction air duct on the sliding base, part of the wind in the drag reduction air duct rushes out from the oblique pressure hole and flows to the workbench connected to the base, which is not drawn in the accompanying drawings. When moving forward on the y-axis, the machining boring tool moves toward the workpiece and has not really started working. Therefore, in order to reduce energy consumption, the first drag reduction hole, the second drag reduction hole and the drag reduction air duct are used to reduce drag. However, when the spindle working boring tool is working, vibration and jitter will inevitably occur due to the rotation of the spindle. Lowering the center of gravity is also one of the solutions to eliminate some of the vibration and jitter. Part of the wind rushes out from the oblique pressure hole and acts on the connection between the damping rib and the workbench, so that the center of gravity is lowered. At the same time, the damping between the damping rib and the workbench is strengthened, thereby achieving the effect of eliminating some of the vibration and jitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a front view of a high-stability five-axis machine tool slide rail system of the present invention.

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of a high-stability five-axis machine tool slide rail system of the present invention.

[0031] Figure 3 This is a left view of a high-stability five-axis machine tool slide rail system of the present invention.

[0032] Figure 4 This is a right side view of a high-stability five-axis machine tool slide rail system of the present invention.

[0033] Figure 5 This is a rear view of a high-stability five-axis machine tool slide rail system of the present invention.

[0034] Figure 6 A high stability five-axis machine tool slide rail system of the present invention Figure 5 Cross-sectional view at AA in the middle.

[0035] Figure 7 This is a top view of a high-stability five-axis machine tool slide rail system of the present invention.

[0036] Figure 8 This is a bottom view of a high-stability five-axis machine tool slide rail system of the present invention.

[0037] Fig. 9 A high stability five-axis machine tool slide rail system of the present invention Figure 8 Cross-sectional view at BB in the middle.

[0038] Fig.10 This is a stereoscopic diagram of a high-stability five-axis machine tool slide rail system of the present invention from another viewing angle.

[0039] in: 1. Horizontal feeding mechanism, 2. Longitudinal feeding mechanism, 3. Sliding base, 4. Connecting support ridge, 5. Bottom plate, 6. First slider connecting hole, 7. Top slide rail groove, 8. Side slide rail groove, 9. Top connecting arm, 10. Vertical connecting arm, 11. Driving connecting plate, 12. Screw, 13. Screw mounting inclined plate, 14. Screw jack, 15. Z-axis side plate, 16. Third slider connecting hole, 17. Spindle mounting frame, 18. First vertical plate, 19. Second vertical plate, 20. First inclined plate, 21. Second inclined plate, 22. Top plate, 23. Back balancing member, 24. Blind air storage hole, 25. Overflow prevention ring, 26. Balanced air inlet hole, 27. Balanced air outlet hole, 28. Two-way acting air duct, 29. Wind slot, 30. Damping rib, 31. First drag reduction hole, 32. Second drag reduction hole, 33. Drag reduction air duct, 34. Oblique pressure hole, 35. First through hole, 36. Second through hole, 37. Side wing, 38. Second screw hole, 39. Strengthened pressure hole, 40. Strengthened side pressure air duct. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are described below with reference to the accompanying drawings: See attached Figure 1 To Attachment Fig.10 As shown in Figure 1, in machining, the amount of jitter is usually caused by the vibration of the mechanical system. The reasons why a five-axis machine tool generates additional jitter during operation may include: Mechanical component problems: Wear or damage to mechanical components, such as worn bearings, can cause the spindle head to vibrate, causing jitter.

[0041] Insufficient rigidity of the tool system: Insufficient rigidity of the tool system, especially when performing cantilever machining, the bending or vibration of the tool may cause ripples on the machined surface.

[0042] Insufficient rigidity of machine tools: Insufficient rigidity of some parts of the machine tool, such as spindle bearings, guide rails, etc., may cause vibration under the action of cutting force.

[0043] Servo system response: Delayed servo system response or improper gain setting may cause the machine tool to jitter when moving at high speed.

[0044] Unstable workpiece clamping: Unstable workpiece clamping or inadequate support may cause the workpiece to vibrate during cutting.

[0045] Machine tool control system: Improper settings of the machine tool control system, such as when the RTCP tool length compensation function is turned on, the coordinate axis linkage may cause jitter.

[0046] Dynamic balance of the machine tool spindle: If the dynamic balance of the spindle is not good, additional centrifugal force will be generated when rotating at high speed, causing jitter.

[0047] Machine tool geometric error: The geometric error of the machine tool, such as the linkage error between the linear axis and the rotary axis, may cause unexpected vibration during the processing.

[0048] Connection between machine tool and tool: Insufficient rigidity of the connection between machine tool spindle and tool, such as improper fit between tool holder and spindle, may also cause vibration.

[0049] To solve the jitter problem, if we start from the structure of the machine tool, it is usually necessary to conduct a comprehensive inspection and adjustment of the machine tool.

[0050] In actual production work, engineers have optimized the structural design of the five-axis machine tool and proposed a high-stability five-axis machine tool slide rail system, including a horizontal feed mechanism 1 and a longitudinal feed mechanism 2. The longitudinal feed mechanism 2 can be slidably connected to the horizontal feed mechanism 1, and the longitudinal feed mechanism 2 can make relative movements toward or away from the workpiece on the x-axis. The horizontal feed mechanism 1 is a transverse mechanical structure. The horizontal feed mechanism 1 includes a sliding base 3, a connecting support ridge 4 and a back force dissipating member. The sliding base 3 includes a pair of bottom plates 5 protruding downward, and a first slider connecting hole 6 is provided on the side of the bottom plate 5. The connecting support ridge 4 is provided above the sliding base 3, and a top slide rail groove 7 and a lateral slide rail groove 8 are provided on the connecting support ridge 4. The longitudinal feed mechanism 2 is respectively provided with a top connecting arm 9 and a vertical connecting arm 10 corresponding to the top slide rail groove 7 and the lateral slide rail groove 8, and a driving connecting plate 11 is provided at the connecting angle between the top connecting arm 9 and the vertical connecting arm 10.

[0051] The top slide rail groove 7 and the lateral slide rail groove 8 are connected by a screw mounting inclined plate 13, and a screw plug hole 14 is provided on the driving connecting plate 11 corresponding to the screw 12. Z-axis side plates 15 are protruding outward on both sides of the vertical connecting arm 10, and a third slider connecting hole 16 is provided on the Z-axis side plate 15. A spindle mounting frame 17 is provided on the top connecting arm 9 near the vertical connecting arm 10.

[0052] The connecting support ridge 4 includes a first vertical plate 18, a second vertical plate 19, a first inclined plate 20, a second inclined plate 21 and a top plate 22. The lateral slide groove 8 is arranged on the first plate, and the top slide groove 7 is arranged on the top plate 22. The top plate 22 and the first vertical plate 18 are connected by the first inclined plate 20, and the top plate 22 and the second vertical plate 19 are connected by the second inclined plate 21. The ratio of the height of the first vertical plate 18 to the height of the second vertical plate 19 is equal to the ratio of the length of the second inclined plate 21 to the length of the first inclined plate 20; the second vertical plate 19 is connected to a pair of dorsal balance members 23 outwardly, and the pair of dorsal balance members 23 are symmetrically arranged on the left and right sides of the second vertical plate 19.

[0053] The side of the back balancing piece 23 is recessed inwardly to form a blind air storage hole 24, and the opening of the blind air storage hole 24 is provided with an anti-overflow ring 25 that is gathered toward the center to prevent a small amount of wind from escaping.

[0054] The back balancing member 23 is provided with a balanced air inlet hole 26 and a balanced air outlet hole 27 on the other side of the air storage blind hole 24, and a two-way air duct 28 is formed between the balanced air inlet hole 26 and the balanced air outlet hole 27. The two-way air duct 28 generates a horizontal thrust toward the longitudinal feeding mechanism 2 and a vertical downward downforce.

[0055] The sliding base 3 is recessed upward and provided with a trapezoidal air passage 29, and the top of the air passage 29 is protruding downward and provided with a pair of damping ribs 30, and the midpoint of the distance between the pair of damping ribs 30 is on the same vertical line as the center of gravity of the horizontal feed mechanism 1 and the longitudinal feed mechanism 2 as a whole.

[0056] The sliding base 3 is provided with first drag reduction holes 31 on both sides of the air groove 29, and the back balance piece 23 is provided with second drag reduction holes 32 corresponding to the first drag reduction holes 31. The first drag reduction holes 31 and the second drag reduction holes 32 are coaxially arranged, and the first drag reduction holes 31 and the second drag reduction holes 32 are connected to form a drag reduction air duct 33.

[0057] The highest heights of the first drag reducing holes 31 and the second drag reducing holes 32 are lower than the lowest height of the longitudinal feeding mechanism 2 .

[0058] An oblique pressure hole 34 is also provided on the sliding base 3, and the oblique pressure hole 34 is connected to the drag reduction air duct 33. Part of the wind in the drag reduction air duct 33 rushes out from the oblique pressure hole 34 and flows to the workbench connected to the base, which is not drawn in the accompanying drawings. Since the machining boring tool moves toward the workpiece when moving forward on the y-axis and has not really started working, in order to save energy, the first drag reduction hole 31, the second drag reduction hole 32 and the drag reduction air duct 33 are used to reduce drag when moving. However, when the spindle working boring tool is working, vibration and jitter will inevitably occur due to the rotation of the spindle. Lowering the center of gravity is also one of the solutions to eliminate some of the vibration and jitter. Part of the wind rushes out from the oblique pressure hole 34 and acts on the connection between the damping rib 30 and the workbench, so that the center of gravity is lowered, and at the same time, the damping between the damping rib 30 and the workbench is strengthened, thereby achieving the effect of eliminating some of the vibration and jitter.

[0059] Furthermore, a reinforced pressurization hole 39 is provided below the oblique pressurization hole 34. The reinforced pressurization hole 39 and the nearby structure constitute a reinforced side pressure air duct 40 with front and rear wind shielding arms. In the direction of movement, wind flows into the reinforced pressurization hole 39 on the front side and rushes out of the reinforced pressurization hole 39 on the rear side, and flows to the workbench connected to the base, thereby strengthening the damping between the damping rib 30 and the workbench, thereby achieving the effect of eliminating some vibration and jitter.

[0060] The Z-axis side plate 15 is respectively provided with a first through hole 35 and a second through hole 36 at the third slider connecting hole 16 near the top connecting arm 9 and the vertical connecting arm 10, and the ratio of the aperture of the first through hole 35 to the aperture of the second through hole 36 is equal to the inverse ratio of the shortest distance from the axis of the screw rod 12 to the top slide groove 7 and the shortest distance from the axis of the screw rod 12 to the lateral slide groove 8.

[0061] A side wing 37 extending outward is provided at the connection between the first vertical plate 18 and the sliding base 3 , and a second screw hole 28 is provided on the side wing 37 .

[0062] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0063] In the description of the present invention, it should be understood that the terms "front and back" are only used to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the device or component referred to must have a specific orientation, and therefore cannot be understood as a limitation of the invention.

[0064] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high-stability five-axis machine tool slide rail system, characterized in that: The invention comprises a horizontal feeding mechanism (1) and a longitudinal feeding mechanism (2), wherein the longitudinal feeding mechanism (2) is slidably connected to the horizontal feeding mechanism (1), and the longitudinal feeding mechanism (2) is capable of performing relative movement toward or away from a workpiece on an x-axis. The horizontal feeding mechanism (1) is a transverse mechanical structure, and the horizontal feeding mechanism (1) comprises a sliding base (3) and a connecting support ridge (4). The sliding base (3) comprises a pair of bottom plates (5) protruding downward, and a first slider connecting hole (6) is provided on the side of the bottom plate (5). The connecting support ridge (4) is arranged above the sliding base (3), and a top slide groove (7) and a lateral slide groove (8) are provided on the connecting support ridge (4). The longitudinal feeding mechanism (2) is respectively provided with a top connecting arm (9) and a vertical connecting arm (10) corresponding to the top slide groove (7) and the lateral slide groove (8), and a driving connecting plate (11) is provided at the connecting angle between the top connecting arm (9) and the vertical connecting arm (10). The top slide rail groove (7) and the lateral slide rail groove (8) are connected via a screw rod mounting inclined plate (13); the drive connecting plate (11) is provided with a screw rod insertion hole (14) corresponding to the screw rod (12); both sides of the vertical connecting arm (10) are provided with Z-axis side plates (15) protruding outwards; the Z-axis side plates (15) are provided with a third slider connecting hole (16); and the top connecting arm (9) is provided with a spindle mounting frame (17) near the vertical connecting arm (10).

2. A high stability five-axis machine tool slide rail system according to claim 1, characterized in that: The connecting support ridge (4) comprises a first vertical plate (18), a second vertical plate (19), a first inclined plate (20), a second inclined plate (21) and a top plate (22); the lateral slide rail groove (8) is arranged on the first plate; the top slide rail groove (7) is arranged on the top plate (22); the top plate (22) and the first vertical plate (18) are connected via the first inclined plate (20); the top plate (22) and the second vertical plate (19) are connected via the second inclined plate (21); the ratio of the height of the first vertical plate (18) to the height of the second vertical plate (19) is equal to the ratio of the length of the second inclined plate (21) to the length of the first inclined plate (20); the second vertical plate (19) is connected outwardly to a pair of back balance members (23); the pair of back balance members (23) are symmetrically arranged on the left and right sides of the second vertical plate (19).

3. A high stability five-axis machine tool slide rail system according to claim 2, characterized in that: The side surface of the back balancing piece (23) is recessed inwardly to form a blind air storage hole (24), and the opening of the blind air storage hole (24) is provided with an anti-overflow ring (25) that is gathered toward the center and is used to prevent a small amount of wind from escaping.

4. A high stability five-axis machine tool slide rail system according to claim 3, characterized in that: The back balancing member (23) is provided with a balanced air inlet hole (26) and a balanced air outlet hole (27) on the other side of the air storage blind hole (24), and a two-way air duct (28) is formed between the balanced air inlet hole (26) and the balanced air outlet hole (27).

5. The high stability five-axis machine tool slide rail system according to claim 2, characterized in that: The sliding base (3) is recessed upwards and is provided with a trapezoidal air passage groove (29), and the top of the air passage groove (29) is protruding downwards and is provided with a pair of damping ribs (30), and the midpoint of the distance between the pair of damping ribs (30) and the center of gravity of the horizontal feeding mechanism (1) and the longitudinal feeding mechanism (2) as a whole are located on the same vertical line.

6. A high stability five-axis machine tool slide rail system according to claim 5, characterized in that: The sliding base (3) is provided with first drag reduction holes (31) on both sides of the air passage slot (29); the back balancing member (23) is provided with second drag reduction holes (32) corresponding to the first drag reduction holes (31); the first drag reduction holes (31) and the second drag reduction holes (32) are coaxially arranged; the first drag reduction holes (31) and the second drag reduction holes (32) are connected to form a drag reduction air duct (33).

7. The high-stability five-axis machine tool slide rail system according to claim 6, characterized in that: The highest heights of the first drag reducing hole (31) and the second drag reducing hole (32) are lower than the lowest height of the longitudinal feeding mechanism (2).

8. The high-stability five-axis machine tool slide rail system according to claim 6, characterized in that: The sliding base (3) is also provided with an oblique pressure hole (34), and the oblique pressure hole (34) is connected to the drag-reducing air duct (33).

9. The high-stability five-axis machine tool slide rail system according to claim 2, characterized in that: The Z-axis side plate (15) is provided with a first through hole (35) and a second through hole (36) at the third slider connection hole (16) near the top connection arm (9) and the vertical connection arm (10), respectively, and the ratio of the aperture of the first through hole (35) to the aperture of the second through hole (36) is equal to the inverse ratio of the shortest distance from the axis of the screw rod (12) to the top slide groove (7) and the shortest distance from the axis of the screw rod (12) to the lateral slide groove (8).

10. The high-stability five-axis machine tool slide rail system according to claim 2, characterized in that: A side wing (37) extending outwards is provided at the connection between the first vertical plate (18) and the sliding base (3), and a second screw rod hole (28) is provided on the side wing (37).

Images