A machine tool for machining gas turbine disc parts with a feed mechanism

Abstract

This invention relates to the field of machine tool technology, specifically to a machine tool for machining gas turbine disc parts with a feed mechanism. It includes a machine tool body, which comprises a chuck table and a tool control table. The tool control table houses a feed assembly, which includes an X-axis feed structure and a Y-axis feed structure, both equipped with feed platforms. This invention utilizes a gripping structure within the X-axis and Y-axis feed structures. During feed adjustment, the rotation of the first or second lead screw exerts a squeezing effect on the damping pad, causing the lubricating oil stored in the damping pad to be evenly distributed on the lead screw surface. This lubrication mechanism continuously provides lubrication to the feed structure during machine tool operation, effectively solving the positioning deviation problem caused by insufficient lubrication between the nut sleeve and the lead screw.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and more specifically, to a machine tool for machining gas turbine disc parts with a feed mechanism. Background Technology

[0002] In the field of modern energy and power, gas turbines play an indispensable role in key industries such as power generation, aerospace and marine power due to their advantages of high efficiency and cleanliness. As one of the core components of gas turbines, the performance of the gas turbine disc directly affects the overall operating efficiency and reliability of the gas turbine.

[0003] Gas turbine disks are characterized by their large size and extremely complex structure. In terms of volume, their dimensions far exceed those of ordinary mechanical parts. Structurally, gas turbine disks contain numerous complex curved surfaces, precision tenons and grooves, and various irregular shapes. In the machining process of gas turbine disks, given their structure and size, a feed mechanism is often used to feed the cutting tool. Specifically, the feed mechanism adjusts the tool position by sliding the feed seat on the surface of the lead screw. This machining method can more accurately control the relative movement between the tool and the workpiece, thereby meeting the machining accuracy requirements of complex structures.

[0004] Nowadays, when machining the precision tenon and groove structure of gas turbine disks, if the feed mechanism is not well lubricated, the tool is prone to slight deviation due to unstable friction, which will eventually lead to deviation in the tenon and groove size and affect the assembly accuracy of the turbine disk and blades. In addition, friction between the tool and the workpiece is unavoidable during the machining process, and the vibration generated by this friction will further affect the positional stability of the feed seat. The change in the position of the feed seat will indirectly interfere with the precise positioning of the tool, making it difficult to guarantee the machining accuracy.

[0005] Therefore, there is an urgent need for a machine tool with a feeding mechanism for machining gas turbine disc parts to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a machine tool for machining gas turbine disk parts with a feed mechanism, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention aims to provide a machine tool for machining gas turbine disk parts with a feed mechanism, comprising a machine tool body, the machine tool body including a chuck worktable and a tool control table, the chuck worktable and the tool control table being fixedly connected, a chuck body being mounted on the surface of the chuck worktable, a feed assembly being provided inside the tool control table, and a tool holder being mounted on the top of the feed assembly.

[0008] The feed assembly includes an X-axis feed structure and a Y-axis feed structure, each equipped with a feed platform. The tool holder is mounted on top of the feed platform of the Y-axis feed structure. The feed platform is connected to both the X-axis and Y-axis feed structures via a gripping mechanism.

[0009] The gripping structure is used to assist the sliding operation of the feed platform. The gripping structure includes a side gripping ring assembly. During the tool holder movement and machining process, the side gripping ring assembly can provide lubrication supplement to the X-axis feed structure and the Y-axis feed structure. When the tool holder stops moving, the tool processes the workpiece. At this time, the side gripping ring assembly can help absorb the vibration generated during the friction between the tool and the workpiece.

[0010] As a further improvement to this technical solution, the X-axis feed structure includes two first side mounting platforms, both of which are fixedly mounted on the surface of the tool control table. A first lead screw is rotatably arranged between the two first side mounting platforms. A first adjusting plate is fixedly mounted on the end of the first lead screw away from the chuck table. Two first side supports are fixedly mounted on the surface of the tool control table, and one of the feed platforms is slidably arranged on the surface of the two first side supports.

[0011] As a further improvement to this technical solution, the Y-axis feed structure includes two second side supports. Both second side supports are mounted on the surface of the feed platform connected to the first side support. Another feed platform is slidably mounted on the surface of the two second side supports. Two second side end mounting platforms are fixedly mounted on the surface of the feed platform connected to the first side support. A second lead screw is rotatably mounted between the two second side end mounting platforms. A second adjusting disc is fixedly mounted on one end of the second lead screw.

[0012] As a further improvement to this technical solution, the gripping structure includes a nut sleeve rod sleeved on the surfaces of the first lead screw and the second lead screw. A connecting tube sleeve is fixedly installed on the outer wall of the nut sleeve rod, and side gripping ring assemblies are installed at both ends of the connecting tube sleeve away from the nut sleeve rod.

[0013] As a further improvement to this technical solution, the side gripping ring assembly includes two support rings fixedly installed on the side end of the connecting pipe sleeve. Each of the two support rings forms an installation cavity, and each of the two installation cavities is equipped with a vibration damping pad. Both vibration damping pads are made of elastic material.

[0014] As a further improvement to this technical solution, both of the vibration damping pads have an inner cavity inside, and an opening is provided on one side of the inner cavity to connect the inner cavity with the outside. A sealing component is installed inside the opening.

[0015] As a further improvement to this technical solution, the two vibration damping pads are both double-layered on the side away from the inner wall of the support ring. The inner layer of the double-layered structure has several flow holes, and the outer layer of the double-layered structure is a honeycomb layer. The inner walls of the vibration damping pads are respectively in contact with the first lead screw and the second lead screw.

[0016] As a further improvement to this technical solution, a protective cavity is formed inside the connecting sleeve, and the nut sleeve rod and the two support rings are all located inside the protective cavity. A dust discharge hole is provided at the bottom of the protective cavity.

[0017] As a further improvement to this technical solution, both the connecting sleeve sleeved on the surface of the first lead screw and the connecting sleeve sleeved on the surface of the second lead screw are provided with dust reduction angles, which are inclined.

[0018] As a further improvement to this technical solution, the side walls of the first side support and the second side support are provided with side grooves, and the bottom of the two feeding platforms are fixedly installed with side gripping strips, the surfaces of the side gripping strips respectively abutting the surfaces of the adjacent side grooves.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In this machine tool for machining gas turbine disk parts with a feed mechanism, the precise positioning of the tool in the tool holder is achieved through the coordinated adjustment of the X-axis feed structure and the Y-axis feed structure, thereby meeting the machining requirements of gas turbine disk parts. A gripping structure is set inside the X-axis feed structure and the Y-axis feed structure. When the feed is adjusted, the rotation of the first lead screw or the second lead screw will exert a squeezing effect on the damping pad, causing the lubricating oil stored in the damping pad to be evenly distributed on the surface of the lead screw. This lubrication mechanism continuously provides lubrication supplement to the feed structure during the operation of the machine tool, effectively solving the positioning deviation problem caused by insufficient lubrication between the nut sleeve and the lead screw.

[0021] During the machining of gas turbine disc parts, when the tool holder stops moving and the tool is cutting, the interaction between the tool and the workpiece will generate frictional vibration. At this time, the vibration damping pad installed in the support ring can play a vibration absorption function, effectively absorbing and dispersing the vibration energy generated when the tool and the workpiece come into contact, reducing the interference of vibration on the machining process, making the tool holder run more smoothly, and extending the service life of the tool.

[0022] Furthermore, the support ring and the nut sleeve are fitted together on the surface of the lead screw, forming a rigid support structure. This not only enhances the overall stability of the feed platform but also effectively resists the lateral forces and torques generated during machining, preventing displacement deviations caused by external forces. The rigid support of the support ring and the vibration absorption function of the damping pad complement each other, ensuring both the stability of the tool holder during high-speed operation and the smoothness and accuracy of the machining process. This dual protection mechanism improves the performance of the machine tool in complex machining tasks and is more suitable for the machining requirements of gas turbine disc parts. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is an exploded view of the feed structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at point A;

[0026] Figure 4 This is a schematic diagram of the X-axis feed structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the connecting sleeve of the X-axis feed structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the connecting sleeve of the Y-axis feed structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the side gripper ring assembly structure of the present invention;

[0030] Figure 8 This is a front view of the machine tool body of the present invention;

[0031] Figure 9 This is a schematic diagram of the vibration damping pad structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the inner layer structure of the vibration damping pad of the present invention.

[0033] The meanings of the labels in the diagram are as follows:

[0034] 1. Machine tool body; 11. Chuck worktable; 12. Tool control console; 13. Chuck body; 14. Tool holder;

[0035] 2. Feed components; 201. X-axis feed structure; 202. Y-axis feed structure;

[0036] 21. First lead screw; 22. First side mounting platform; 23. First adjusting plate; 24. First side support; 25. Feed platform; 26. Second lead screw; 27. Second side mounting platform; 28. Second adjusting plate; 29. ​​Second side support;

[0037] 3. Grip structure; 31. Nut sleeve; 32. Connecting sleeve; 33. Side grip ring assembly;

[0038] 331. Support ring; 332. Mounting cavity; 333. Vibration damping pad;

[0039] 4. Inner cavity; 41. Opening; 42. Sealing element; 401. Flow hole; 402. Honeycomb layer;

[0040] 5. Protective cavity; 51. Dust discharge hole; 52. Dust reduction angle; 53. Side grip strip; 54. Side groove. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] For examples, please refer to Figures 1-4 As shown, the purpose of this embodiment is to provide a machine tool for machining gas turbine disk parts with a feeding mechanism, including a machine tool body 1. The machine tool body 1 includes a chuck worktable 11 and a tool control table 12. The chuck worktable 11 and the tool control table 12 are fixedly connected. A chuck body 13 is installed on the surface of the chuck worktable 11. A feeding assembly 2 is provided inside the tool control table 12. A tool holder 14 is installed on the top of the feeding assembly 2.

[0043] The feed assembly 2 includes an X-axis feed structure 201 and a Y-axis feed structure 202. Both the X-axis feed structure 201 and the Y-axis feed structure 202 are equipped with feed platforms 25. The tool holder 14 is mounted on top of the feed platform 25 of the Y-axis feed structure 202. The feed platform 25 is connected to both the X-axis feed structure 201 and the Y-axis feed structure 202 via a gripping structure 3.

[0044] The gripping structure 3 is used to assist the sliding operation of the feed platform 25. The gripping structure 3 includes a side gripping ring assembly 33. During the process of the tool holder 14 moving and machining, the side gripping ring assembly 33 can provide lubrication supplement to the X-axis feed structure 201 and the Y-axis feed structure 202. When the tool holder 14 stops moving, the tool performs machining on the workpiece. At this time, the side gripping ring assembly 33 can help absorb the vibration generated during the friction between the tool and the workpiece.

[0045] When the tool holder 14 needs to be adjusted laterally, it needs to be adjusted assistedly by the X-axis feed structure 201. The specific structure of the X-axis feed structure 201 is disclosed below. Figure 2 As shown, the X-axis feed structure 201 includes two first side mounting platforms 22, both of which are fixedly mounted on the surface of the tool control table 12. A first lead screw 21 is rotatably arranged between the two first side mounting platforms 22. A first adjusting plate 23 is fixedly mounted on the end of the first lead screw 21 away from the chuck table 11. Two first side supports 24 are fixedly mounted on the surface of the tool control table 12, and one of the feed platforms 25 is slidably arranged on the surface of the two first side supports 24.

[0046] When the tool holder 14 needs longitudinal position adjustment, it can be assisted by the Y-axis feed structure 202. The specific structure of the Y-axis feed structure 202 is disclosed below, in conjunction with... Figure 2 and Figure 3 It can be seen that the Y-axis feed structure 202 includes two second side supports 29. Both second side supports 29 are mounted on the surface of the feed platform 25 connected to the first side support 24. Another feed platform 25 is slidably mounted on the surface of the two second side supports 29. Two second side end mounting platforms 27 are fixedly mounted on the surface of the feed platform 25 connected to the first side support 24. A second lead screw 26 is rotatably mounted between the two second side end mounting platforms 27. A second adjusting plate 28 is fixedly mounted on one end of the second lead screw 26.

[0047] Next, the specific structure of the gripping structure 3 is disclosed. The gripping structure 3 includes a nut sleeve rod 31 sleeved on the surface of the first lead screw 21 and the second lead screw 26. A connecting tube sleeve 32 is fixedly installed on the outer wall of the nut sleeve rod 31. Side gripping ring assemblies 33 are installed at both ends of the connecting tube sleeve 32 away from the nut sleeve rod 31.

[0048] When the tool holder 14 needs to be adjusted laterally, its precise adjustment is first achieved through the X-axis feed structure 201: the first adjustment disk 23 is rotated to drive the first lead screw 21 to rotate. The surface of the first lead screw 21 is machined with threaded grooves, which form a transmission pair with the nut sleeve 31 inside the feed platform 25 through threaded engagement. When the first lead screw 21 rotates, the interaction of the threaded pair converts the rotational torque into axial thrust, which pushes the feed platform 25 to slide along the surfaces of the two first side supports 24, thereby driving the tool holder 14, which is fixedly connected to the feed platform 25, to move laterally and complete the adjustment of the lateral position.

[0049] When the tool holder 14 needs longitudinal position adjustment, its precise adjustment is achieved through the Y-axis feed structure 202: by rotating the second adjustment disc 28, the second lead screw 26 is driven to rotate. The second lead screw 26 also adopts the thread transmission principle, and its surface thread engages with the nut sleeve 31 inside another feed platform 25, converting the rotational motion into linear motion. This pushes the feed platform 25 to slide along the surfaces of the two second side supports 29, thereby driving the tool holder 14 to move longitudinally and completing the longitudinal position adjustment. The high precision and low friction characteristics of the lead screw drive ensure the smoothness and reliability of the longitudinal adjustment.

[0050] Furthermore, the first lead screw 21 and the second lead screw 26 in this application are driven manually via the first adjustment disc 23 and the second adjustment disc 28. However, depending on actual needs, they can also be replaced by motor drive to achieve automated control and higher precision adjustment.

[0051] The side gripping ring assembly 33 includes two support rings 331 fixedly installed on the side of the connecting sleeve 32. Each of the two support rings 331 forms a mounting cavity 332. Both mounting cavities 332 are equipped with vibration damping pads 333, and both vibration damping pads 333 are made of elastic material.

[0052] In order to further lubricate the X-axis feed structure 201 and the Y-axis feed structure 202, both damping pads 333 have an inner cavity 4 inside. One side of the inner cavity 4 has an opening 41, which is used to connect the inner cavity 4 to the outside. A sealing plug 42 is installed inside the opening 41.

[0053] Furthermore, in order to improve the uniformity of lubrication of the first lead screw 21 and the second lead screw 26, the two damping pads 333 are both double-layered on the side away from the inner wall of the support ring 331. The inner layer of the double-layered structure has several flow holes 401, and the outer layer of the double-layered structure is a honeycomb layer 402. The inner wall of the damping pad 333 is in contact with the first lead screw 21 and the second lead screw 26 respectively.

[0054] Improvements include: See Figure 5 and combined Figure 6 As shown, when the first lead screw 21 or the second lead screw 26 rotates, the threaded structure on the surface of the first lead screw 21 and the second lead screw 26 will exert a squeezing effect on the vibration damping pad 333, combined with Figure 9 and Figure 10As shown, during the extrusion process, the lubricating oil stored in the inner cavity 4 can be uniformly seeped out through the inner flow hole 401 and the outer honeycomb layer 402, and cover the surface of the first lead screw 21 or the second lead screw 26. The porous structure of the honeycomb layer 402 can not only efficiently disperse the lubricating oil, but also ensure uniform distribution of the lubricant, reducing local insufficient or excessive lubrication. At this time, the rotation of the first lead screw 21 and the second lead screw 26 will drive the feed platform 25 to move linearly, so the support ring 331 will drive the damping pad 333 to slide on the surface of the lead screw. Therefore, it can uniformly replenish the lubrication of the surfaces of the first lead screw 21 and the second lead screw 26, thereby reducing the frictional resistance during the movement of the lead screw and reducing wear. This not only realizes the automation and uniformity of lubrication, but also improves the stability and reliability of the lead screw operation.

[0055] It is important to note that it is possible to obtain from Figure 7 As can be seen, the damping pad 333 is attached to the surface of the first lead screw 21 and the second lead screw 26, rather than tightly wrapped around their surfaces. Therefore, it will not affect the rotation of the first lead screw 21 and the second lead screw 26.

[0056] When the tool holder 14 moves to the stop position and the tool is machining the gas turbine disk part, the interaction between the tool and the workpiece generates vibration. The elastic material (such as rubber or polyurethane) used in the vibration damping pad 333 can effectively absorb and disperse vibration energy, reducing vibration transmission. At the same time, the porous structure of the honeycomb layer 402 further attenuates the propagation of vibration waves, dispersing and consuming vibration energy through its honeycomb-shaped pore structure. This dual vibration damping mechanism (energy absorption by the elastic material and vibration attenuation by the honeycomb structure) works synergistically to reduce the vibration amplitude during machining, thereby reducing the interference of vibration on machining accuracy. This not only ensures the surface finish of the machined part but also improves the dimensional accuracy of the workpiece, providing a reliable guarantee for high-quality machining of the gas turbine disk part.

[0057] Furthermore, such as Figure 5 and Figure 6 As shown, the nut sleeve 31 is tightly connected to the support rings 331 on both sides through the connecting sleeve 32, forming a high-rigidity integral structure. This enhances the stability of the feed platform 25 and effectively reduces the small displacements and vibrations that may occur during the processing of the feed platform 25. For the processing of gas turbine disc parts, high precision is crucial because its geometric shape and dimensional accuracy directly determine the aerodynamic performance and mechanical efficiency of the gas turbine. Small deviations may lead to uneven airflow distribution or mechanical vibration, thereby affecting the operating stability and overall efficiency of the gas turbine. Therefore, the design of the side gripping ring group 33 not only optimizes the smoothness of the processing through lubrication and vibration reduction functions, but also further ensures the processing accuracy by strengthening the structural rigidity, thus fully meeting the strict requirements of high-precision processing for gas turbine disc parts.

[0058] During machine tool operation, the first lead screw 21 and the second lead screw 26 are in continuous working state, and the nut sleeve 31 and related structures on their surfaces move frequently. Dust, debris and other impurities are likely to exist in the working environment. Once these impurities adhere to the surface of the first lead screw 21 or the second lead screw 26, they will not only accelerate the wear of the lead screw, but may also mix into the mating clearance between the nut sleeve 31 and the lead screw, affecting the transmission accuracy. Therefore, a protective cavity 5 is formed inside the connecting sleeve 32. The nut sleeve 31 and the two support rings 331 are all located inside the protective cavity 5. A dust discharge hole 51 is opened at the bottom of the protective cavity 5.

[0059] Improvements include: See Figure 4 and Figure 5 As can be seen, the design of the connecting sleeve 32 forms a protective cavity 5 inside. Specifically, the nut sleeve 31 and the two support rings 331 are placed inside this protective cavity 5, which can effectively protect them from external dust, impurities or other external factors that may cause damage. A dust discharge hole 51 is provided at the bottom of the protective cavity 5, so that dust or small particles entering the protective cavity 5 can be discharged through the dust discharge hole 51, thereby keeping the inside of the protective cavity 5 clean and reducing mechanical wear.

[0060] Both the connecting sleeve 32 fitted onto the surface of the first lead screw 21 and the connecting sleeve 32 fitted onto the surface of the second lead screw 26 have dust reduction angles 52 on their sides, and the dust reduction angles 52 are in an inclined state.

[0061] The improvement lies in the fact that both the connecting sleeve 32 fitted onto the surface of the first lead screw 21 and the connecting sleeve 32 fitted onto the surface of the second lead screw 26 have dust reduction angles 52 on their sides. These dust reduction angles 52 are inclined, and combined with... Figure 8 It can be seen that the inclined design of the dust reduction angle 52 changes the path of dust falling. When dust falls to the side of the connecting pipe sleeve 32, the inclined dust reduction angle 52 prevents the dust from falling directly vertically into the entrance of the protective chamber 5. Instead, the dust slides down the inclined surface into the surrounding environment, which greatly reduces the possibility of dust falling into the interior of the protective chamber 5 and provides a cleaner operating environment for the structure inside the protective chamber 5.

[0062] To further improve the sliding stability of the feed platform 25, side grooves 54 are provided on the side walls of the first side support 24 and the second side support 29. Side gripping strips 53 are fixedly installed on the bottom of the two feed platforms 25, and the surface of the side gripping strips 53 is respectively attached to the surface of the adjacent side grooves 54.

[0063] Improvements include: See Figure 3 and combined Figure 4 and Figure 5As shown, the fitting structure of the side gripper 53 and the side groove 54 is equivalent to adding extra guidance and support for the sliding of the feed platform 25. When the feed platform 25 moves under the drive of the lead screw, the side gripper 53 slides along the side groove 54, so that the feed platform 25 can only move along the predetermined straight trajectory. At the same time, this fitting structure also enhances the tightness of the connection between the feed platform 25 and the first side support 24 and the second side support 29, so that it can better resist external interference forces during movement, further improving the sliding stability of the feed platform 25, thereby ensuring the positional accuracy of the tool when machining gas turbine disk parts and improving the machining quality of the parts.

[0064] In summary, the working principle of this scheme is as follows: When the tool holder 14 needs to be adjusted, the first adjusting disk 23 is rotated to drive the first lead screw 21 to rotate. The surface of the first lead screw 21 is machined with threaded grooves, which form a transmission pair with the nut sleeve 31 inside the feed platform 25 through threaded engagement. When the first lead screw 21 rotates, the interaction of the threaded pair converts the rotational torque into axial thrust, pushing the feed platform 25 to slide along the surfaces of the two first side supports 24, thereby driving the tool holder 14, which is fixedly connected to the feed platform 25, to move laterally and complete the adjustment of the lateral position. The second adjusting disk 28 is rotated to drive the second lead screw 26 to rotate. The second lead screw 26 also adopts the threaded transmission principle. Its surface thread engages with the nut sleeve 31 inside the other feed platform 25, converting the rotational motion into linear motion, pushing the feed platform 25 to slide along the surfaces of the two second side supports 29, thereby driving the tool holder 14 to move longitudinally and complete the adjustment of the longitudinal position.

[0065] When the first lead screw 21 or the second lead screw 26 rotates, the threaded structure on the surface of the first lead screw 21 and the second lead screw 26 will exert a squeezing effect on the vibration damping pad 333, combined with Figure 9 and Figure 10 As shown, during the extrusion process, the lubricating oil stored in the inner cavity 4 can be uniformly seeped out through the inner flow hole 401 and the outer honeycomb layer 402, and cover the surface of the first lead screw 21 or the second lead screw 26. The porous structure of the honeycomb layer 402 can not only efficiently disperse the lubricating oil, but also ensure uniform distribution of the lubricant, reducing local insufficient or excessive lubrication. At this time, the rotation of the first lead screw 21 and the second lead screw 26 will drive the feed platform 25 to move linearly, so the support ring 331 will drive the damping pad 333 to slide on the surface of the lead screw. Therefore, it can uniformly replenish the lubrication of the surfaces of the first lead screw 21 and the second lead screw 26, thereby reducing the frictional resistance during the movement of the lead screw and reducing wear. It not only realizes the automation and uniformity of lubrication, but also improves the stability and reliability of the lead screw operation.

[0066] When the tool holder 14 moves to the stop position and the tool is machining the gas turbine disk part, the interaction between the tool and the workpiece generates vibration. The elastic material used in the vibration damping pad 333 can effectively absorb and disperse vibration energy, reducing vibration transmission. At the same time, the porous structure of the honeycomb layer 402 further attenuates the propagation of vibration waves, dispersing and consuming vibration energy through its honeycomb-shaped pore structure. This dual vibration damping mechanism works synergistically to reduce the vibration amplitude during machining, thereby reducing the interference of vibration on machining accuracy. This not only ensures the surface finish of the machined part but also improves the dimensional accuracy of the workpiece, providing a reliable guarantee for high-quality machining of the gas turbine disk part.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine tool for machining gas turbine disk parts with a feed mechanism, comprising a machine tool body (1), characterized in that: The machine tool body (1) includes a chuck worktable (11) and a tool control table (12). The chuck worktable (11) and the tool control table (12) are fixedly connected. A chuck body (13) is installed on the surface of the chuck worktable (11). A feed assembly (2) is provided inside the tool control table (12). A tool holder (14) is installed on the top of the feed assembly (2). The feed assembly (2) includes an X-axis feed structure (201) and a Y-axis feed structure (202). Both the X-axis feed structure (201) and the Y-axis feed structure (202) are provided with feed platforms (25). The tool holder (14) is installed on the top of the feed platform (25) of the Y-axis feed structure (202). The feed platform (25) is connected to the X-axis feed structure (201) and the Y-axis feed structure (202) through a gripping structure (3). The gripping structure (3) is used to assist the sliding operation of the feed platform (25). The gripping structure (3) includes a side gripping ring group (33). During the process of the tool holder (14) moving and processing, the side gripping ring group (33) can provide lubrication supplement to the X-axis feed structure (201) and the Y-axis feed structure (202). When the tool holder (14) stops moving, the tool processes the workpiece. At this time, the side gripping ring group (33) can help absorb the vibration generated during the friction between the tool and the workpiece. The gripping structure (3) includes a nut sleeve rod (31) sleeved on the surface of the first lead screw (21) and the second lead screw (26). A connecting tube sleeve (32) is fixedly installed on the outer wall of the nut sleeve rod (31). Side gripping ring assemblies (33) are installed at both ends of the connecting tube sleeve (32) away from the nut sleeve rod (31). The side gripping ring assembly (33) includes two support rings (331) fixedly installed on the side end of the connecting sleeve (32). Each of the two support rings (331) forms an installation cavity (332). Each of the two installation cavities (332) is equipped with a vibration damping pad (333). Both vibration damping pads (333) are made of elastic material. Both of the vibration damping pads (333) have a double-layer structure on the side away from the inner wall of the support ring (331). The inner layer of the double-layer structure has several flow holes (401), and the outer layer of the double-layer structure is a honeycomb layer (402). The inner wall of the vibration damping pad (333) is in contact with the first lead screw (21) and the second lead screw (26) respectively.

2. The machine tool for machining gas turbine disc parts with a feed mechanism according to claim 1, characterized in that: The X-axis feed structure (201) includes two first side mounting platforms (22), both of which are fixedly mounted on the surface of the tool control table (12). A first lead screw (21) is rotatably arranged between the two first side mounting platforms (22). A first adjustment plate (23) is fixedly mounted on the end of the first lead screw (21) away from the chuck table (11). Two first side supports (24) are fixedly mounted on the surface of the tool control table (12), and one of the feed platforms (25) is slidably arranged on the surface of the two first side supports (24).

3. The machine tool for machining gas turbine disc parts with a feed mechanism according to claim 2, characterized in that: The Y-axis feed structure (202) includes two second side supports (29). Both second side supports (29) are mounted on the surface of the feed platform (25) connected to the first side support (24). Another feed platform (25) is slidably provided on the surface of the two second side supports (29). Two second side end mounting platforms (27) are fixedly installed on the surface of the feed platform (25) connected to the first side support (24). A second lead screw (26) is rotatably provided between the two second side end mounting platforms (27). A second adjusting plate (28) is fixedly installed on one end of the second lead screw (26).

4. The machine tool for machining gas turbine disc parts with a feed mechanism according to claim 1, characterized in that: Both of the vibration damping pads (333) have an inner cavity (4) inside. An opening (41) is provided on one side of the inner cavity (4). The opening (41) is used to connect the inner cavity (4) with the outside. A sealing element (42) is installed inside the opening (41).

5. The machine tool for machining gas turbine disc parts with a feed mechanism according to claim 1, characterized in that: The interior of the connecting sleeve (32) forms a protective cavity (5), and the nut sleeve (31) and the two support rings (331) are located inside the protective cavity (5). A dust discharge hole (51) is provided at the bottom of the protective cavity (5).

6. The machine tool for machining gas turbine disc parts with a feed mechanism according to claim 1, characterized in that: Dust reduction angles (52) are provided on the side ends of the connecting sleeve (32) sleeved on the surface of the first lead screw (21) and the connecting sleeve (32) sleeved on the surface of the second lead screw (26), and the dust reduction angles (52) are in an inclined state.

7. The machine tool for machining gas turbine disc parts with a feed mechanism according to claim 3, characterized in that: The side walls of the first side support (24) and the second side support (29) are provided with side grooves (54), and the bottoms of the two feed platforms (25) are fixedly installed with side gripping strips (53), and the surfaces of the side gripping strips (53) are respectively attached to the surfaces of the adjacent side grooves (54).

Images