Ultra-long stroke broach high-speed driving vibration suppression compensation system and method

Abstract

The invention discloses an ultra-long stroke broach high-speed driving vibration suppression compensation system and method. The broach is long in stroke, large in load, high in speed and very easy to vibrate; meanwhile, errors generated by broach abrasion and system deformation are the two key factors influencing the machining precision and efficiency of the broaching machine. In order to solve the technical problems of machining errors and the like caused by mechanical vibration and deformation in high-speed driving, the invention provides the following technical scheme that the system comprises a broaching machining mechanism, a workpiece clamping and moving mechanism and a workpiece broaching tool damping mechanism. The high-speed drive damping technology is achieved through the broach drive three-dimensional damping assembly and the workpiece broach damping device, and the real-time error compensation technology is achieved through the displacement fine adjustment mechanisms at the two ends of the broach. And through the high-speed driving and real-time error compensation technology, the precision and efficiency of ultra-long stroke broaching machining are improved. In addition, the guide wheel is used for abutting against the back side of the cutting position of the broach, and excessive deformation, caused by cutting force, of the middle of the ultra-long broach is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a vibration suppression and compensation system and method for high-speed driving of an ultra-long-stroke broach. Background Art

[0002] In the field of large-scale precision parts manufacturing, the application of ultra-long-stroke broaches (usually with a stroke range of 3m-5m) has become an important technical means to improve processing efficiency in the precision broaching of key components such as aircraft engine turbine disc tenons and ship transmission gears. However, with the continuous improvement of processing accuracy requirements, traditional broaching systems face severe challenges in high-speed drive and dynamic error control. Specifically, during the processing, the axial stiffness of the broach system is attenuated due to the ultra-long stroke, and the mechanical-thermal coupling deformation caused by high cutting forces makes it difficult for traditional rigid drive systems to meet the requirements of modern precision machining for dynamic stability and real-time compensation accuracy.

[0003] The existing tool vibration suppression technology has three key defects: 1) The compensation dimension is single: only passive suppression is performed on axial vibration, and the coupling effect of the dynamic change of radial stiffness on machining accuracy during cutting is not considered; 2) It is difficult to effectively suppress and eliminate the vibration and machining errors caused by the bending deformation of the ultra-long broach itself, which seriously affects the accuracy of the dimensional chain. These problems together lead to reduced machining efficiency and shortened tool life of traditional systems.

[0004] Therefore, in order to address the technical difficulties such as mechanical vibration and deformation causing processing errors due to high-speed drive, it is necessary to provide a high-speed drive and error compensation method and system for ultra-long stroke broaches, so as to improve the accuracy and efficiency of ultra-long stroke broaching processing through high-speed drive technology and real-time error compensation. Summary of the invention

[0005] The object of the present invention is to provide a high-speed drive vibration suppression compensation system and method for ultra-long stroke broaches, which can improve the accuracy and efficiency of ultra-long stroke broaching processing through high-speed drive, real-time error compensation, and multi-dimensional vibration suppression.

[0006] In the first aspect, the present invention provides a high-speed drive vibration suppression and compensation system for an ultra-long stroke broach, which includes a broaching mechanism, a workpiece clamping and moving mechanism, and a workpiece broach vibration elimination mechanism. The broaching mechanism is used to clamp and drive the broach. The workpiece clamping and moving mechanism and the workpiece broach vibration elimination mechanism are respectively arranged on both sides of the broach. The workpiece broach vibration elimination mechanism includes a broach guide support assembly. The broach guide support assembly includes a guide wheel and a guide cylinder whose output pressure can be adjusted. The guide wheel is rotatably connected to the push rod of the guide cylinder and is aligned with the workpiece clamping position of the workpiece clamping and moving mechanism. The guide wheel is used to press against the back side of the broach under the pressure of the guide cylinder; the contact stiffness between the workpiece and the broach is controlled by adjusting the output pressure of the guide cylinder.

[0007] Preferably, the workpiece clamping and moving mechanism includes a first moving platform and a workpiece clamping assembly. The workpiece broach vibration damping mechanism further includes a second moving platform. Both the first moving platform and the second moving platform adopt linear moving modules. The moving directions of the first moving platform and the second moving platform are parallel to the cutting depth direction of the broach; the workpiece clamping assembly is installed on the moving plate of the first moving platform. The broach guiding and supporting assembly is installed on the moving plate of the second moving platform.

[0008] Preferably, support blocks are installed on the moving plates of the first moving platform and the second moving platform. The support blocks provide lateral support for the workpiece clamping assembly or the broach guiding and supporting assembly.

[0009] Preferably, the broaching mechanism includes a machine base, a broaching driving mechanism, a first broach clamping and moving assembly, a second broach clamping and moving assembly, and a broaching damping oil cylinder. The first broach clamping and moving assembly and the second broach clamping and moving assembly are slidably connected to the machine base. The first broach clamping and moving assembly is connected to the broaching damping oil cylinder. The broaching damping oil cylinder provides an adjustable broaching feed damping force for the first broach clamping and moving assembly, changes the clamping stiffness of the broach in the axial direction, and thus suppresses the axial vibration of the broach. The second broach clamping and moving assembly is connected to the broaching driving mechanism.

[0010] Preferably, the first broach clamping and moving assembly and the second broach clamping and moving assembly have the same structure, and both include a broaching slide plate, a tool end displacement mechanism installed on the broaching slide plate, and a flexible vibration damping clamping assembly installed at the end of the tool end displacement mechanism. The tool end displacement mechanism adopts a two-axis moving slide module. The flexible vibration damping clamping assembly is used to clamp the end of the broach.

[0011] Preferably, the flexible vibration damping clamping assembly includes a clamping base body, a moving V-shaped clamping block, and a clamping oil cylinder. The clamping base body is installed on the tool end displacement mechanism. A tool receiving groove is provided on the clamping base body. A first V-shaped groove is provided on the tool receiving groove. The clamping oil cylinder is fixed on the clamping base body, and the push rod is fixed to the moving V-shaped clamping block. A second V-shaped groove is provided on the moving V-shaped clamping block. The openings of the first V-shaped groove and the second V-shaped groove face each other. By adjusting the input pressure of the clamping oil cylinder, the clamping stiffness of the moving V-shaped clamping block on the end of the broach is changed, thereby suppressing the radial vibration of the broach.

[0012] Preferably, the broaching damping oil cylinder is fixed on the machine base, and the push rod is fixed to the broaching slide plate in the second broach clamping and moving assembly.

[0013] Preferably, the broaching drive mechanism comprises a broaching motor and a feed screw. One end of the feed screw is rotatably connected to the machine base. The feed screw and the broaching slide in the first broach clamping moving assembly form a spiral pair. The feed screw is driven to rotate by the broaching motor.

[0014] Preferably, a detection device for detecting vibration signals is connected to the broach clamped by the broaching mechanism.

[0015] In a second aspect, the present invention provides a vibration suppression compensation method for high-speed driving of an ultra-long stroke broach, which uses the aforementioned high-speed driving vibration suppression compensation system for an ultra-long stroke broach; the vibration suppression compensation method for high-speed driving of an ultra-long stroke broach comprises:

[0016] The broaching mechanism drives the broach to perform broaching on the workpiece.

[0017] Detect the vibration signal of the broach during the broaching process. By adjusting the output pressure of the guide cylinder, the contact stiffness between the workpiece and the broach is adjusted to suppress the vibration of the broach and the workpiece. By adjusting the output pressure of the broaching damping cylinder, the axial clamping stiffness of the broach is changed to suppress the axial vibration of the broach; by adjusting the output pressure of the clamping cylinder, the radial clamping stiffness of the broach is changed to suppress the radial vibration of the broach.

[0018] The present invention has the following beneficial effects:

[0019] 1. Aiming at the technical difficulties of machining errors caused by mechanical vibration and deformation in high-speed driving, the present invention provides a method and system for high-speed driving and error compensation of ultra-long stroke broaches, which realizes high-speed driving vibration elimination technology by means of a three-dimensional damping assembly for broach driving and a workpiece broach vibration elimination mechanism, and realizes real-time error compensation by means of a broach end displacement mechanism. The present invention improves the precision and efficiency of ultra-long stroke broaching through high-speed driving and real-time error compensation technology. Therefore, it has significant economic, social and environmental benefits.

[0020] 2. The workpiece broach vibration elimination mechanism in the present invention uses a guide wheel to support the back side of the broach cutting position to prevent the cutting force from causing excessive deformation of the middle part of the extra-long broach, thereby effectively improving the broaching accuracy of the high-speed driven extra-long stroke broach and reducing the vibration caused by the extra-long stroke broach's own bending elastic deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the broaching mechanism in an embodiment of the present invention.

[0022] Figure 2 Schematic diagram of the structure of the broach clamping moving assembly in an embodiment of the present invention ( Figure 1 AA section in the figure).

[0023] Figure 3 Partial schematic diagram of the Y-direction movement fine-tuning table in the embodiment of the present invention ( Figure 2 Cross-sectional view of the B-B section in

[0024] Figure 4 Schematic structural diagram of the flexible vibration suppression clamping assembly in the embodiment of the present invention ( Figure 2 Cross-sectional view of the C-C section in

[0025] Figure 5 Top view schematic diagram of the workpiece clamping and moving mechanism and the workpiece broach vibration damping mechanism in the embodiment of the present invention.

[0026] Figure 6 Cross-sectional schematic diagram of the workpiece clamping and moving mechanism and the workpiece broach vibration damping mechanism in the embodiment of the present invention ( Figure 5 Cross-sectional view of the D-D section in

[0027] Figure 7 Block diagram of the control system in the embodiment of the present invention. Detailed implementation manners

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Embodiment

[0030] The broach has a long stroke, large load, and high speed, and is very prone to vibration; at the same time, the errors caused by broach wear and system deformation are the two most critical factors affecting the machining accuracy and efficiency of the broaching machine. The ultra-long stroke broach high-speed drive vibration suppression compensation system provided in this embodiment suppresses vibration by adjusting the clamping and contact stiffness, and realizes real-time correction of dimensional errors through the Z-direction and Y-direction movement fine-tuning tables at both ends of the broach.

[0031] As Figure 1 and Figure 5 shown, an ultra-long stroke broach high-speed drive vibration suppression compensation system includes a broaching mechanism Ι, a workpiece clamping and moving mechanism Ⅱ, and a workpiece broach vibration damping mechanism Ⅲ. The broaching mechanism Ι is used to clamp the broach 21 and drive the broach 21 to perform broaching feed movement. The workpiece clamping and moving mechanism Ⅱ and the workpiece broach vibration damping mechanism Ⅲ are arranged opposite to each other on both sides of the broach 21. The cutting teeth of the broach 21 face the workpiece clamping and moving mechanism Ⅱ. The workpiece broach vibration damping mechanism Ⅲ abuts against the back side of the broach 21 to reduce the deformation of the ultra-long stroke broach 21 itself along the length direction, and suppress the vibration of the ultra-long stroke broach 21 and the workpiece, and improve the broaching accuracy.

[0032] As Figure 1As shown in the figure, the broaching mechanism Ι includes a machine base 8, a broaching drive mechanism, a feed guide rail 6, a first broach clamping and moving assembly 1, a second broach clamping and moving assembly 3, and a broaching damping oil cylinder 2. The feed guide rail 6 is fixed on the machine base 8. The first broach clamping and moving assembly 1 and the second broach clamping and moving assembly 3 are slidably connected to the feed guide rail 6. The broaching drive mechanism is used to drive the second broach clamping and moving assembly 3 to move along the feed guide rail 6 to achieve the feed movement of the broach. The broaching damping oil cylinder 2 is fixed on the machine base 8, and the push rod is connected to the first broach clamping and moving assembly 1, and is used to change the feed damping force of the broach by adjusting its own oil pressure, thereby changing the clamping stiffness in the axial direction of the broach, changing the resonance frequency of the broach, and avoiding the coincidence of the mechanical vibration frequency of the broach with the resonance frequency, so as to achieve the purpose of suppressing axial vibration.

[0033] As Figure 1 shown, the broaching drive mechanism is used to provide the reciprocating displacement movement of the broach to achieve the broaching operation of the workpiece, and it includes a broaching motor 9, a feed screw 4, a support seat 6, and a feed bearing 7. One end of the feed screw 4 is rotatably connected to the machine base 8 through a feed support seat 6 and a feed bearing 7. The feed screw 4 and the nut fixed on the broaching slide plate in the first broach clamping and moving assembly form a screw pair. The broaching motor 9 is used to drive the feed screw 4 to rotate. In this embodiment, the output shaft of the broaching motor 9 is directly fixed to the feed screw 4. In some other embodiments, the broaching motor 9 and the feed screw 4 are connected through a transmission structure. By adjusting the transmission ratio of the transmission structure, the maximum broaching force output by the broaching motor 9 can be adjusted.

[0034] The first broach clamping and moving assembly 1 and the second broach clamping and moving assembly 3 have the same structure, and both include a broaching slide plate, a broach end displacement mechanism installed on the broaching slide plate, and a flexible vibration suppression clamping assembly installed at the end of the broach end displacement mechanism. The broaching slide plate is slidably connected to the feed guide rail 6.

[0035] As Figure 2 、 Figure 3 and Figure 4 shown, the broach end displacement mechanism adopts a two-axis moving slide module, which includes a Z-direction moving fine adjustment table and a Y-direction moving fine adjustment table. The Y-direction moving fine adjustment table includes a Y-direction motor 3-1, a Y-direction bearing 3-2, a Y-direction support seat 3-3, a Y-direction dovetail guide rail 3-4, and a Y-direction lead screw 3-5. The Z-direction moving fine adjustment table includes a Z-direction dovetail guide rail 3-6, a Z-direction support seat 3-7, a Z-direction bearing 3-8, a Z-direction motor 3-9, a Z-direction lead screw 3-10, and a Z-direction bottom plate 3-12.

[0036] The Y-axis dovetail guide rail 3-4 is fixed on the broaching slide; the Z-axis base plate 3-12 is slidably connected to the Y-axis dovetail guide rail 3-4. One end of the Y-axis lead screw 3-5 is rotatably connected to the broaching slide through the Y-axis bearing 3-2 and the Y-axis support seat 3-3. The Y-axis motor 3-1 drives the Y-axis lead screw 3-5 to rotate. In this embodiment, the output shaft of the Y-axis motor 3-1 is fixedly connected to the end of the Y-axis lead screw 3-5. The Y-axis lead screw 3-5 and the nut fixed at the bottom of the Z-axis base plate 3-12 form a spiral pair.

[0037] The vertically arranged Z-direction dovetail guide rail 3-6 is fixed on the Z-direction bottom plate 3-12. The Z-direction support seat 3-7 is fixed to the Z-direction bottom plate 3-12. The top end of the vertically arranged Z-direction lead screw 3-10 is rotationally connected to the Z-direction support seat 3-7 through the Z-direction bearing 3-8. The Z-direction motor 3-9 is fixed to the Z-direction bottom plate 3-12. The output shaft of the Z-direction motor 3-9 is fixedly connected to the end of the Z-direction lead screw 3-10.

[0038] like Figure 2 and Figure 4 As shown, the flexible vibration damping clamping assembly includes a clamping base 3-11, a movable V-shaped clamping block 3-13 and a clamping oil cylinder 3-14. The clamping base 3-11 is slidably connected to the Z-direction dovetail guide rail 3-6. The threaded hole or nut on the clamping base 3-11 and the Z-direction lead screw 3-10 form a spiral pair.

[0039] The clamping base 3-11 is provided with a tool receiving groove which is through at both ends in the horizontal direction. The tool receiving groove is provided with a first V-shaped groove. The opening of the first V-shaped groove is horizontally oriented to the side away from the Z-direction lead screw 3-10. The clamping cylinder 3-14 is fixed to the clamping base 3-11, and the push rod is horizontally oriented to the opening of the first V-shaped groove. The push rod of the clamping cylinder 3-14 is fixed to the movable V-shaped clamping block 3-13. The movable V-shaped clamping block 3-13 is provided with a second V-shaped groove. The openings of the first V-shaped groove and the second V-shaped groove are opposite to each other.

[0040] Before broaching, extend the end of the broach into the tool receiving groove of the clamping base 3-11; place the end clamping position of the broach between the first V-shaped groove and the second V-shaped groove; push the mobile V-shaped clamping block 3-13 close to the broach through the clamping oil cylinder 3-14, so as to clamp the broach. During the working process, by adjusting the oil pressure of the clamping oil cylinder 3-14, the radial clamping stiffness of the broach is changed, the resonance frequency of the broach is changed, and the mechanical vibration frequency of the broach is prevented from being consistent with the resonance frequency, so as to achieve the purpose of suppressing axial vibration.

[0041] Specifically, the function of the flexible vibration suppression clamping component is to flexibly clamp both ends of the broach, realize the linear reciprocating motion of the broach, and at the same time adopt a hydraulic clamping method to absorb the vibration when the broach is driven at high speed. When the broach vibrates, the vibration signal measured by the detection device is analyzed and calculated by the optimization controller, and a control signal is output to the servo hydraulic valve to adjust the pressure of the hydraulic clamping cylinder and change the clamping stiffness of the broach, which can suppress the vibration of the broach in the Y and Z directions.

[0042] During the machining process, both ends of the broach are respectively clamped on the flexible vibration suppression clamping components of the first broach clamping and moving component 1 and the second broach clamping and moving component 3; according to the dimensional error measured by the detection device, the Z-direction and Y-direction displacements of both ends of the broach are finely adjusted through the Z-direction moving fine-tuning table and the Y-direction moving fine-tuning table to compensate for the errors generated by tool wear and machining system deformation during the machining process. Improve broaching accuracy.

[0043] The broaching slide plate in the first broach clamping and moving component 1 is fixed to the push rod of the broaching damping cylinder 2. The broaching slide plate in the second broach clamping and moving component 3 is connected to the feed screw rod 4 to form a screw pair.

[0044] As Figure 5 and Figure 6 shown, the workpiece clamping and moving mechanism II includes a first moving platform and a workpiece clamping component. The workpiece broach vibration damping mechanism III includes a second moving platform and a broach guiding and supporting component. The first moving platform and the second moving platform have the same structure and are symmetrically arranged, and both include a displacement bottom plate 10, a displacement support seat 11, a displacement motor 12, a displacement bearing 13, a displacement lead screw 14, a displacement guide rail 15, a moving plate 16 and a support block 17. The displacement guide rail 15 and the displacement support seat 11 are both fixed on the displacement bottom plate 10; one end of the displacement lead screw 14 is rotatably connected to the displacement support seat 11 through the displacement bearing 13. The moving plate 16 is slidably connected to the displacement guide rail 15. The nut fixed on the displacement guide rail 15 and the displacement lead screw 14 form a screw pair. The support block 17 is fixed on the moving plate 16 and is used to provide lateral support for the workpiece clamping component or the broach guiding and supporting component.

[0045] The workpiece clamping component is installed on the moving plate 16 of the first moving platform, and the back is provided with lateral support by the corresponding support block 17. The broach guiding and supporting component is installed on the moving plate 16 of the second moving platform, and the back is provided with lateral support by the corresponding support block 17.

[0046] The workpiece clamping assembly uses a chuck assembly, which includes a workpiece chuck 18 and jaws 20 mounted on the workpiece chuck 18. The jaws 20 are used to reliably clamp the workpiece 19. The broach guiding and supporting assembly includes a guiding head 24, a guiding oil cylinder 23, and guiding wheels 22. The guiding head 24 is fixed on the moving plate 16 of the second moving platform. The guiding oil cylinder 23 is fixed on the guiding head 24; the outer end of the push rod of the guiding oil cylinder 23 faces the workpiece clamping assembly and is rotatably connected with the guiding wheels 22.

[0047] During broaching, under the pressure of the guiding oil cylinder 23, the guiding wheels 22 tightly press against the back of the broaching position of the broach 21, improving the stability of the workpiece 19 and the broach 21 and suppressing the vibration of the workpiece 19 and the broach 21. In some embodiments, the vibration signals of the workpiece 19 and the broach 21 are measured by a detection device, analyzed and calculated by an optimization controller, and a control signal is output to the servo hydraulic valve to adjust the input oil pressure of the guiding oil cylinder 23, thereby changing the pressure of the guiding wheels 22 on the broach 21 and changing the contact stiffness between the workpiece and the broach, achieving the effect of avoiding resonance and suppressing the vibration between the workpiece 19 and the broach 21.

[0048] As Figure 7 shown, in some embodiments, a control system is also provided. The control system includes a servo driver, a servo motor, a lead screw nut, a servo pressure regulating valve, a hydraulic cylinder, an optimization controller, a parameter setter, and an intelligent detection device. The intelligent detection device is installed at the end of the broach and is used to detect vibration and dimensional parameters. In some further embodiments, the intelligent detection device can use the intelligent detection unit provided in the embodiment of the invention with the publication number CN115007939A, "An Intelligent Broaching Device and Its Working Method".

[0049] The process of broaching operation, error compensation, and vibration suppression of the ultra-long stroke broach high-speed drive vibration suppression and compensation system in this embodiment is as follows:

[0050] The guiding oil cylinder 23 pushes the guiding wheels 22 to tightly press against the back of the broaching position of the broach; the broaching drive mechanism drives the broach to perform broaching on the workpiece. The vibration signal of the workpiece is detected by a vibration sensor installed on the workpiece or the flexible vibration suppression clamping assembly.

[0051] For the vibration signal detected by the intelligent detection device, when the broach generates axial (i.e., X-direction) vibration, after analysis and calculation by the optimization controller, a control signal is output to the servo hydraulic valve to adjust the input oil pressure of the broaching damping cylinder 2 and change the clamping stiffness of the broach in the X direction to suppress the vibration of the broach in the X direction.

[0052] When the broach generates radial (i.e., in the Y and Z directions) vibrations, the hydraulic clamping method of the clamping cylinder 3-14 used can absorb the vibrations during the high-speed driving of the broach. In some further embodiments, the optimization controller analyzes and calculates based on the vibration signal, outputs a control signal to the servo hydraulic valve, adjusts the pressure of the hydraulic clamping cylinder 3-14, and changes the clamping stiffness of the broach, thereby suppressing the vibrations of the broach in the Y and Z directions.

[0053] The hydraulic support of the guiding cylinder 23 for the broaching position of the broach absorbs and suppresses the vibrations of the workpiece and the broach; in some further embodiments, the optimization controller analyzes and calculates based on the vibration signal, outputs a control signal to the servo hydraulic valve, adjusts the pressure of the guiding cylinder 23, and changes the contact stiffness between the workpiece and the broach to suppress the vibrations between the workpiece and the broach.

[0054] In some embodiments, the intelligent detection device detects dimensional errors during the broaching process and adjusts the position of the broach through the Z-direction moving fine-tuning table and the Y-direction moving fine-tuning table to compensate for the errors generated by tool wear and the errors generated by the deformation of the machining system during the machining process, thereby improving the broaching accuracy.

Claims

1. A high-speed driving vibration suppression and compensation system for an ultra-long stroke broach, comprising a broaching mechanism (Ι) and a workpiece clamping and moving mechanism (Ⅱ); the broaching mechanism (Ι) is used for clamping and driving a broach (21); characterized in that: The ultra-long stroke broach high-speed driving vibration suppression and compensation system further includes a workpiece broach vibration suppression mechanism (Ⅲ); the workpiece clamping and moving mechanism (Ⅱ) and the workpiece broach vibration suppression mechanism (Ⅲ) are respectively arranged on both sides of the broach (21); the workpiece broach vibration suppression mechanism (Ⅲ) includes a broach guiding and supporting assembly; the broach guiding and supporting assembly includes a guiding wheel (22) and a guiding oil cylinder (23) with adjustable output pressure; the guiding wheel (22) is rotatably connected to the push rod of the guiding oil cylinder (23) and is aligned with the workpiece clamping position of the workpiece clamping and moving mechanism (Ⅱ); the guiding wheel (22) is used to press against the back side of the broach under the pressure of the guiding oil cylinder (23); by adjusting the output pressure of the guiding oil cylinder (23), the contact stiffness between the workpiece and the broach is controlled.

2. The high-speed drive vibration suppression and compensation system for an ultra-long stroke broach according to claim 1, wherein: The workpiece clamping and moving mechanism (Ⅱ) includes a first moving platform and a workpiece clamping assembly; the workpiece broach vibration suppression mechanism (Ⅲ) further includes a second moving platform; both the first moving platform and the second moving platform adopt linear moving modules; the moving directions of the first moving platform and the second moving platform are parallel to the cutting depth direction of the broach; the workpiece clamping assembly is installed on the moving plate (16) of the first moving platform; the broach guiding and supporting assembly is installed on the moving plate (16) of the second moving platform.

3. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to claim 2, characterized in that: Support blocks (17) are installed on the moving plates (16) of the first moving platform and the second moving platform; the support blocks (17) provide lateral support for the workpiece clamping assembly or the broach guiding and supporting assembly.

4. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to claim 1, characterized in that: The broaching mechanism (Ι) includes a machine base (8), a broaching driving mechanism, a first broach clamping and moving assembly (1), a second broach clamping and moving assembly (3) and a broaching damping oil cylinder (2); the first broach clamping and moving assembly (1) and the second broach clamping and moving assembly (3) are slidably connected to the machine base (8); the first broach clamping and moving assembly (1) is connected to the broaching damping oil cylinder (2); the broaching damping oil cylinder (2) provides an adjustable broaching feed damping force for the first broach clamping and moving assembly (1) to change the clamping stiffness of the broach in the axial direction; the second broach clamping and moving assembly (3) is connected to the broaching driving mechanism.

5. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to claim 4, characterized in that: The first broach clamping and moving assembly (1) and the second broach clamping and moving assembly (3) have the same structure, and both include a broaching slide plate, a tool end displacement mechanism installed on the broaching slide plate, and a flexible vibration suppression clamping assembly installed at the end of the tool end displacement mechanism; the tool end displacement mechanism adopts a two-axis moving slide module; the flexible vibration suppression clamping assembly is used to clamp the end of the broach.

6. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to claim 5, characterized in that: The flexible vibration suppression clamping assembly includes a clamping base body (3-11), a moving V-shaped clamping block (3-13) and a clamping oil cylinder (3-14); the clamping base body (3-11) is installed on the displacement mechanism at the end of the broach; a tool accommodation groove is provided on the clamping base body (3-11); a first V-shaped groove is provided on the tool accommodation groove; the clamping oil cylinder (3-14) is fixed on the clamping base body (3-11), and the push rod is fixed to the moving V-shaped clamping block (3-13); a second V-shaped groove is provided on the moving V-shaped clamping block (3-13); the openings of the first V-shaped groove and the second V-shaped groove face each other; the clamping stiffness of the moving V-shaped clamping block (3-13) on the end of the broach is changed by adjusting the input pressure of the clamping oil cylinder (3-14).

7. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to claim 4, characterized in that: The broaching damping oil cylinder (2) is fixed on the machine base (8), and the push rod is fixed to the broaching slide plate in the second broach clamping and moving assembly (3).

8. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to claim 4, characterized in that: The broaching driving mechanism includes a broaching motor (9) and a feed screw rod (4); one end of the feed screw rod (4) is rotatably connected to the machine base (8); the feed screw rod (4) and the broaching slide plate in the first broach clamping and moving assembly form a screw pair; the feed screw rod (4) is driven to rotate by the broaching motor (9).

9. An ultra-long stroke broach high-speed drive vibration suppression and compensation system according to any one of claims 1-8, characterized in that: A detection device for detecting vibration signals is connected to the broach (21) clamped by the broaching processing mechanism (Ι).

10. A high-speed driving vibration suppression and compensation method for an ultra-long stroke broach, characterized in that: Use an ultra-long stroke broach high-speed driving vibration suppression compensation system as described in claim 6; the ultra-long stroke broach high-speed driving vibration suppression compensation method includes: The broaching processing mechanism (Ι) drives the broach to perform broaching on the workpiece. Detect the vibration signal of the broach during the broaching process; by adjusting the output pressure of the guiding oil cylinder (23), adjust the contact stiffness between the workpiece and the broach to suppress the vibration of the broach and the workpiece; by adjusting the output pressure of the broaching damping oil cylinder (2), change the axial clamping stiffness of the broach to suppress the axial vibration of the broach; adjust the output pressure of the clamping oil cylinder (3-14) to change the radial clamping stiffness of the broach to suppress the radial vibration of the broach.

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