Metal blade machining lathe

Abstract

The invention discloses a metal blade machining lathe, and belongs to the technical field of machining, a blade comprises a blade body and journals fixedly arranged at the two ends of the blade body, the lathe comprises a lathe body and a workbench arranged on the lathe body, a mounting seat is arranged on the workbench, a blade body positioning assembly is arranged in the mounting seat, and the blade body positioning assembly is arranged on the mounting seat. The blade body positioning assembly comprises a cylinder rotationally connected with the mounting base, a first positioning assembly and a second positioning assembly, the first positioning assembly and the second positioning assembly are arranged in the cylinder, shaft necks at the two ends of the blade body extend out of the cylinder, and the first positioning assembly and the second positioning assembly are connected to the cylinder through displacement connecting assemblies. And the first positioning assembly and the second positioning assembly can be controlled to approach the blade so as to clamp the blade body of the blade. The lathe can restrain generation of surrounding wind-induced vibration during finish turning of the blade, and the machining precision and efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining, and particularly relates to a lathe for machining metal blades. Background Art

[0002] Compressor blades are important components in gas turbine engines. The blade blanks are cast. The blade includes a blade body and journal necks provided at both ends of the blade body. Before finish machining the blade body, the journal necks need to be precision turned. When the existing lathes for machining metal blades are turning, due to the rapid rotation of the blade body itself, it is easy to generate wind-induced vibration around the blade, thereby causing the blade to tremble itself and affecting the machining quality. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a lathe for machining metal blades, which can suppress the generation of wind-induced vibration around the blade during precision turning and improve the machining accuracy and efficiency.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A lathe for machining metal blades according to the present invention, the blade includes a blade body and journal necks fixedly provided at both ends of the blade body. The lathe includes a lathe bed body and a workbench provided on the lathe bed body. An installation seat is provided on the workbench. A blade body positioning component is provided in the installation seat. The blade body positioning component includes a cylinder body rotatably connected to the installation seat, a first positioning component and a second positioning component provided in the cylinder body. The journal necks at both ends of the blade body extend out of the cylinder body. A first arc-shaped positioning portion corresponding to one side surface of the blade body is formed on the first positioning component, and a second arc-shaped positioning portion corresponding to the other side surface of the blade body is formed on the second positioning component. Both the first positioning component and the second positioning component are connected to the cylinder body through a displacement connection component. By adjusting the displacement connection component, it is possible to control the first positioning component and the second positioning component to approach the blade to clamp the blade body.

[0005] Further, both the first positioning component and the second positioning component include a plurality of specially-shaped follower blocks arranged at equal intervals. An arc-shaped surface is formed on the side of the specially-shaped follower block facing the blade. The arc-shaped surfaces of the specially-shaped follower blocks that make up the first positioning component are combined to form the first arc-shaped positioning portion, and the arc-shaped surfaces of the specially-shaped follower blocks that make up the second positioning component are combined to form the second arc-shaped positioning portion. The displacement connection component can control the radial displacement of the specially-shaped follower blocks along the cylinder body.

[0006] Further, a long hole is opened in the specially-shaped follower block along the radial direction of the cylinder body. A guide rod is inserted into the long hole. The guide rod is fixedly connected to the cylinder body through a support plate. An opening groove for the displacement connection component to give way is opened on the cylinder wall of the cylinder body.

[0007] Furthermore, a return spring is arranged between two adjacent special-shaped follower blocks. The return spring is sleeved outside the guide rod, and two ends of the return spring are respectively abutted against surfaces of two adjacent special-shaped follower blocks.

[0008] Furthermore, the displacement connection assembly includes a sliding block, a screw rod connected to the sliding block, and a nut for fixing the screw rod to the cylinder body. The sliding block can slide along the opening groove, and a threaded hole connected to the screw rod is formed in the sliding block.

[0009] Furthermore, at least two elastic cushion blocks are arranged on each of the arc-shaped surfaces. The elastic cushion blocks are detachably connected to the special-shaped follower blocks.

[0010] Furthermore, one side of the mounting seat is hinged with a connecting rod through a rotating rod. The distal end of the connecting rod is connected with a positioning rod for positioning an end face of a blade body. A return torsion spring is sleeved outside the rotating rod, and two connecting ends of the return torsion spring are respectively fixedly connected with the mounting seat and the connecting rod.

[0011] Furthermore, the cylinder body includes a first semi-circular shell and a second semi-circular shell. One side of the first semi-circular shell and the second semi-circular shell is hinged, and the other side is detachably connected. The first positioning assembly and the second positioning assembly are respectively installed in the first semi-circular shell and the second semi-circular shell.

[0012] The beneficial effects of the present invention are as follows: In a metal blade processing lathe of the present invention, by arranging the first positioning assembly and the second positioning assembly, the blade body of the blade can be respectively pressed and rotated along with the blade, avoiding the generation of wind-induced vibration around the blade caused by too high a rotation speed, thereby reducing the vibration during the rotation of the blade and enabling the precision turning process to be carried out more smoothly.

[0013] The lathe of the present invention is directly used for modifying a workbench. The cylinder body is rotatably arranged on the mounting seat and can rotate along with a three-jaw chuck of the lathe, thereby reducing resistance. The mounting seat is connected to the workbench through a nut. The journal shafts at both ends of the blade body extend out of the cylinder body and are respectively used for clamping and processing. By adjusting the displacement connection assembly, the first positioning assembly and the second positioning assembly can be controlled to approach the blade to clamp the blade body, which is convenient for the loading and unloading of the blade positioning assembly and the pressing force, and convenient for adjusting the zero position before processing.

[0014] Other advantages, objectives and features of the present invention will be described in the subsequent specification, and to some extent, will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. Description of the Drawings

[0015] To make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration: Figure 1 Structural schematic diagram of the lathe of the present invention; Figure 2 Structural schematic diagram of the blade body positioning assembly; Figure 3 For Figure 2 Enlarged view at A; Figure 4 Side view of the blade body positioning assembly; Figure 5 Structural schematic of the cylinder body Figure 1 ; Figure 6 Structural schematic of the cylinder body Figure 2 ; Figure 7 Structural schematic diagram of the sliding block.

[0016] The markings in the drawings are as follows: blade body 1, journal 2, lathe body 3, workbench 4, mounting seat 5, cylinder body 6, special-shaped follower block 7, arc surface 8, long hole 9, guide rod 10, support plate 11, open slot 12, return spring 13, sliding block 14, screw 15, nut 16, threaded hole 17, elastic cushion block 18, rotating rod 19, connecting rod 20, positioning rod 21, return torsion spring 22, first semi-cylindrical shell 23, second semi-cylindrical shell 24. Detailed implementation manners

[0017] As Figures 1-3 shown, a lathe for processing metal blades according to the present invention, the blade includes a blade body 1 and journals 2 fixedly arranged at both ends of the blade body 1, the two journals 2 are coaxially arranged, the lathe includes a lathe bed and a workbench 4 arranged on the lathe bed, the lathe adopts a conventional horizontal lathe structure and also has a three-jaw chuck and a corresponding center. Among them, a mounting seat 5 is arranged on the workbench 4, the mounting seat 5 can move or be relatively fixed with respect to the workbench 4, and a blade body positioning assembly is arranged inside the mounting seat 5 for positioning the blade body 1 of the blade.

[0018] Specifically, the blade body positioning component includes a cylinder 6 rotatably connected to the mounting base 5, a first positioning component and a second positioning component arranged in the cylinder 6. The cylinder 6 is cylindrical with both ends open. The journals 2 at both ends of the blade body 1 extend out of the cylinder 6. One end is used for clamping by a three-jaw chuck, and the other end is used for precision turning work. The end face of the other end can also be abutted by a center. The first positioning component and the second positioning component face each other. A first arc-shaped positioning portion corresponding to one side face of the blade body 1 is formed on the first positioning component, and a second arc-shaped positioning portion corresponding to the other side face of the blade body 1 is formed on the second positioning component. To a certain extent, only the positioning parts of the first positioning component and the second positioning component are different, and the rest of the connecting parts are opposite. For example, both the first positioning component and the second positioning component are connected to the cylinder 6 through a displacement connection component. By adjusting the displacement connection component, it is possible to control the first positioning component and the second positioning component to approach the blade to clamp the blade body 1 of the blade.

[0019] In this embodiment, as Figure 5 and 6 shown, both the first positioning component and the second positioning component include a number of special-shaped follower blocks 7 arranged at equal intervals. The special-shaped follower blocks 7 are block-shaped, and the back side is connected to the cylinder 6 through a displacement connection component. On the other side, that is, the side of the special-shaped follower block 7 facing the blade forms an arc surface 8. At this time, the displacement connection component can adopt a conventional bolt, and it is only necessary to be able to adjust the position in the radial direction of the cylinder 6. Among them, the arc surfaces 8 of the special-shaped follower blocks 7 that make up the first positioning component are combined to form a first arc-shaped positioning portion, and the arc surfaces 8 of the special-shaped follower blocks 7 that make up the second positioning component are combined to form a second arc-shaped positioning portion, which are respectively used to cooperate with the two side faces of the blade body 1 of the blade to increase the contact area between the blade and the cylinder 6, so that the cylinder 6 can rotate with the blade to avoid the generation of wind-induced vibration; the displacement connection component can control the radial displacement of the special-shaped follower block 7 along the cylinder 6 to realize the clamping of the blade, and can adapt to blades with different blade body 1 thicknesses.

[0020] In the device of the present invention, by arranging a number of special-shaped follower blocks 7 arranged at equal intervals, the positioning component can be evenly divided, and it can adapt to different specifications of blades. Because among some different specifications of blades, only the length or width is different, but the arc of the blade body 1 is basically the same. In this way, the arc-shaped positioning portions basically do not change. By changing the interval and axial position between the special-shaped follower blocks 7, a set of special-shaped follower blocks 7 can adapt to the positioning of different specifications of blades, with better adaptability and more economical use. Each special-shaped follower block 7 can be controlled independently, which is also convenient for positioning the blade and avoids problems such as positioning conflicts.

[0021] In this embodiment, a long hole 9 is radially formed in the special-shaped follower block 7 along the radial direction of the cylinder body 6. A guide rod 10 is inserted into the long hole 9. The long hole 9 can be used to make way for the guide rod 10 when the special-shaped follower block 7 moves radially. The guide rod 10 is used to axially limit the special-shaped follower block 7, avoiding the problem that the positioning position is difficult to adjust caused by the rotation of the special-shaped follower block 7. The guide rod 10 is fixedly connected to the cylinder body 6 through a support plate 11. An opening groove 12 for making way for the displacement connection assembly is formed in the cylinder wall of the cylinder body 6, so that the displacement connection assembly can adaptively move along the axial direction.

[0022] In this embodiment, a return spring 13 is arranged between two adjacent special-shaped follower blocks 7. The return spring 13 is sleeved outside the guide rod 10. The two ends of the return spring 13 are respectively abutted against the surfaces of two adjacent special-shaped follower blocks 7. By arranging the return spring 13, a certain elastic supporting force can be provided between the special-shaped follower blocks 7. After the displacement connection assembly is loosened after positioning, the return spring 13 can drive the special-shaped follower blocks 7 to return to the initial position along the guide rod 10, facilitating the accurate positioning work for the next time and improving the positioning adjustment efficiency of the displacement connection assembly.

[0023] In this embodiment, as Figure 7 shown, the displacement connection assembly includes a sliding block 14, a screw rod 15 connected to the sliding block 14, and a nut 16 for fixing the screw rod 15 to the cylinder body 6. The sliding block 14 can slide along the opening groove 12 to adjust the axial position. A threaded hole 17 connected to the screw rod 15 is formed in the sliding block 14. At least two elastic cushion blocks 18 are arranged on each arc surface 8. The elastic cushion blocks 18 are detachably connected to the special-shaped follower blocks 7, and the elastic cushion blocks 18 can better position the device.

[0024] In this embodiment, as Figure 2 and 4 shown, one side of the mounting seat 5 is hinged with a connecting rod 20 through a rotating rod 19. The distal end of the connecting rod 20 is connected with a positioning rod 21. The positioning rod 21 is used to position the end face of the blade body 1. A return torsion spring 22 is sleeved outside the rotating rod 19. The two connecting ends of the return torsion spring 22 are respectively fixedly connected to the mounting seat 5 and the connecting rod 20. When the positioning rod 21 is used, the connecting rod 20 can be manually twisted so that the positioning rod 21 can be directly opposite to the end face of the blade body 1. After use, the connecting rod 20 can be loosened. The connecting rod 20 can return to its original position under the action of the elastic restoring force of the return torsion spring 22, avoiding interference with the subsequent processing process. The device is convenient to use, practical and effective.

[0025] In this embodiment, the cylinder body 6 includes a first semi-circular shell 23 and a second semi-circular shell 24. One side of the first semi-circular shell 23 and the second semi-circular shell 24 is hinged, and the other side is detachably connected. The first positioning component and the second positioning component are respectively installed in the first semi-circular shell 23 and the second semi-circular shell 24. By providing the first semi-circular shell 23 and the second semi-circular shell 24 that can be opened and closed, the blades can be conveniently installed between the first positioning component and the second positioning component, and the clamping efficiency of the workpiece can be improved. A sealing strip is provided between the first semi-circular shell 23 and the second semi-circular shell 24 to reduce the possibility of air leakage.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A metal blade processing lathe, the blade including a blade body and journal bearings fixedly arranged at both ends of the blade body, the lathe including a lathe bed and a workbench arranged on the lathe bed, characterized in that: An installation base is provided on the workbench. A blade body positioning component is arranged inside the installation base. The blade body positioning component includes a cylinder body rotatably connected to the installation base, a first positioning component and a second positioning component arranged inside the cylinder body. The journal necks at both ends of the blade body extend out of the cylinder body. A first arc-shaped positioning portion corresponding to one side surface of the blade body is formed on the first positioning component, and a second arc-shaped positioning portion corresponding to the other side surface of the blade body is formed on the second positioning component. Both the first positioning component and the second positioning component are connected to the cylinder body through a displacement connection component. By adjusting the displacement connection component, it is possible to control the first positioning component and the second positioning component to approach the blade to clamp the blade body of the blade.

2. The metal blade processing lathe according to claim 1, characterized in that: Both the first positioning component and the second positioning component include a number of special-shaped follower blocks arranged at equal intervals. An arc surface is formed on the side of the special-shaped follower block facing the blade. The arc surfaces of the special-shaped follower blocks that make up the first positioning component are combined to form the first arc-shaped positioning portion, and the arc surfaces of the special-shaped follower blocks that make up the second positioning component are combined to form the second arc-shaped positioning portion; the displacement connection component can control the radial displacement of the special-shaped follower block along the cylinder body.

3. A metal blade processing lathe according to claim 2, characterized in that: A long hole is formed in the special-shaped follower block along the radial direction of the cylinder body. A guide rod is inserted into the long hole. The guide rod is fixedly connected to the cylinder body through a support plate. An opening groove for the displacement connection component to give way is formed on the cylinder wall of the cylinder body.

4. A metal blade processing lathe according to claim 3, characterized in that: A return spring is arranged between two adjacent special-shaped follower blocks. The return spring is sleeved on the outside of the guide rod, and both ends of the return spring are abutted against the surfaces of two adjacent special-shaped follower blocks respectively.

5. A metal blade processing lathe according to claim 3, characterized in that: The displacement connection component includes a sliding block, a screw rod connected to the sliding block, and a nut for fixing the screw rod to the cylinder body. The sliding block can slide along the opening groove, and a threaded hole connected to the screw rod is formed on the sliding block.

6. The metal blade processing lathe according to claim 2, wherein: At least two elastic cushion blocks are arranged on each arc surface, and the elastic cushion blocks are detachably connected to the special-shaped follower blocks.

7. A metal blade processing lathe according to any one of claims 1-6, characterized in that: One side of the installation base is hinged with a connecting rod through a rotating rod. The distal end of the connecting rod is connected with a positioning rod, and the positioning rod is used for positioning the end face of the blade body. A return torsion spring is sleeved on the outside of the rotating rod, and the connecting ends of both ends of the return torsion spring are fixedly connected to the installation base and the connecting rod respectively.

8. A metal blade processing lathe according to any one of claims 1-6, characterized in that: The cylinder body includes a first semi-cylindrical shell and a second semi-cylindrical shell. One side of the first semi-cylindrical shell and the second semi-cylindrical shell is hinged, and the other side is detachably connected. The first positioning component and the second positioning component are respectively installed in the first semi-cylindrical shell and the second semi-cylindrical shell.

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