Five-axis machining fixing tool for Y-shaped large pull rod of aero-engine
By designing a five-axis machining and fixed tooling for aero engine Y-type large pull rod including flat bottom plate, inclined panel and limit fixing device, the problems of cumbersome operation and large limit error in the existing technology are solved, and efficient and accurate fixing and Processing effect.
Patent Information
- Application Number
- CN202420780420.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The five-axis machining and fixed tooling for existing aircraft engine Y-type large pull rods is complicated to operate when limiting and fixing. The bending branches and trunks vibrate greatly, the limit error is large, and the dimensional error between different parts is large, resulting in limit deviation. It is difficult to ensure the fixing effect and accuracy.
A five-axis machining and fixed tooling including flat bottom plate, inclined panel and limit fixing device was designed. Through the combination of inclined panel and limit rod, the Y-shaped large pull rod is achieved by using Z-shaped plate, fastening screw and elastic support. The overall limit and fixation ensures contact fit, and sets a tool retractor and tool mounting hole for easy operation and fixation.
It realizes a simple and efficient fixing effect, improves limiting accuracy, reduces processing errors, and ensures stable fixation and precise machining of the Y-shaped large pull rod.
Smart Images
Figure CN222134207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fixing tool, in particular to a five-axis machining fixing tool for a Y-shaped large tie rod of an aero-engine. Background Art
[0002] The Y-shaped large tie rod of an aircraft engine is a special-shaped Y-shaped structure. After casting, it needs to be processed by five-axis machining equipment to process the hole, the ball socket in the hole, the inside and outside of the groove, and the shape of the connection part to ensure the relevant size and position requirements of the parts. However, since the trunk and branches of the Y-shaped large tie rod are not on the same plane, but the branches are slightly bent to one side, it is relatively difficult to limit and fix it using fixed tooling.
[0003] The current fixed tooling is a flat plate structure, which uses multi-position limit rods to limit the Y-type large tie rod of the aircraft engine on the flat plate, and then fixes it with a pressure plate. On the one hand, this method is more cumbersome to operate, and on the other hand, the bent branches are suspended in the air, vibrating severely during processing, and the processing error is large. In addition, since the position of the limit rod is fixed, the surface of the cast aircraft engine Y-type large tie rod is rough, and there is a certain error in the size between different aircraft engine Y-type large tie rods, it cannot be guaranteed that the limit rod and the surface of the Y-type large tie rod are completely in contact and fit during the limit, and there is a certain limit deviation.
[0004] In order to simplify the operation, improve the operating efficiency of the tooling, and improve the fixing effect and limiting accuracy, it is necessary to improve the design of the fixed tooling. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a five-axis machining fixture for Y-type large tie rods of aircraft engines. The fixture of the utility model has the characteristics of simple operation, high working efficiency, good fixing effect, high limiting accuracy, small machining error and reasonable design.
[0006] The technical solution of this utility model:
[0007] A five-axis machining fixture for a Y-shaped large tie rod of an aircraft engine, comprising a flat bottom plate, an inclined plate being arranged on the upper side of one end of the flat bottom plate in the length direction, and an end stopper being arranged in the middle of the upper side of the other end;
[0008] A pair of symmetrically arranged first limiting fixtures and a pair of symmetrically arranged second limiting fixtures are distributed along a straight line on the flat bottom plate between the end limiting rod and the inclined plate, and the first limiting fixtures and the second limiting fixtures correspond to the main trunk positions of the Y-shaped large pull rod;
[0009] A pair of symmetrically arranged third limit fixing devices are symmetrically arranged on the inclined panel, and the two third limit fixing devices correspond to the branch positions of the Y-shaped large pull rod respectively.
[0010] This solution provides good support and limit fixation for the entire irregular Y-shaped large pull rod by setting an inclined panel on the flat bottom plate, and respectively setting end limit rods and limit fixing devices on the flat bottom plate and the inclined panel. Compared with traditional fixing tooling, the fixing tooling of this solution has better fixing effect and higher processing accuracy.
[0011] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixture, an internal threaded hole is provided on the flat bottom plate at the end limit rod, and the end limit rod and the flat bottom plate are connected via threads.
[0012] This solution connects the end limit rod to the flat bottom plate through threads, which makes the connection firm and easy to replace, and the design is more reasonable.
[0013] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixture, the first limit fixing device, the second limit fixing device and the third limit fixing device have the same structure, including a Z-shaped plate, one end of the Z-shaped plate is movably connected to the sliding groove via a rotating shaft, the sliding groove is provided on the flat bottom plate and the inclined plate, an elastic support member is provided on the rear side of the sliding groove, a long strip hole is provided in the middle of the Z-shaped plate, a fastening screw is provided on the flat bottom plate and the inclined plate below the long strip hole, and a fastening nut is provided on the fastening screw.
[0014] This solution improves the limiting and fixing device, and uses a Z-shaped plate, a fastening screw and a fastening nut to simultaneously complete the limiting and fixing of the Y-shaped large pull rod, which makes the operation simpler. Under the action of the elastic support, a centered extrusion operation can be achieved, so that the contact between the limiting device and the Y-shaped large pull rod is closer, avoiding limiting deviation.
[0015] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixture, a sinking groove is provided on the flat bottom plate and the inclined plate below the Z-shaped plate, and the sliding groove is provided on the side wall of the sinking groove.
[0016] This solution provides a larger sinking space below by arranging sinking grooves on the flat bottom plate and the inclined plate below the Z-shaped plate, so that the downward pressure of the Z-shaped plate can be further increased and the fixing effect is better.
[0017] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixture, the positive corner on the contact side between the Z-shaped plate and the Y-shaped large tie rod is provided with an arc chamfer.
[0018] In this solution, an arc chamfer is provided at the positive angle of the contact side between the Z-shaped plate and the Y-shaped large pull rod, so that feeding and discharging are more convenient and the operation is easier.
[0019] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixture, the elastic support member is a spring or an elastic rubber pad.
[0020] Preferably, the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixed tooling has tooling mounting holes on the flat bottom plate.
[0021] This solution provides tooling mounting holes to facilitate fixing the tooling in the five-axis device, making the operation more convenient.
[0022] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixed tooling, the flat bottom plate is provided with a first back-off groove, a second back-off groove and a third back-off groove at positions corresponding to the Y-shaped large tie rod machining.
[0023] This solution facilitates processing operations by setting a tool withdrawal groove and has a more reasonable design.
[0024] Preferably, in the aforementioned aircraft engine Y-shaped large tie rod five-axis machining fixing tooling, the third limiting fixing device corresponds to the inner side of the Y-shaped large tie rod branch.
[0025] This solution provides a better support effect on the branch when the branch end is processed by arranging the third limiting fixing device correspondingly on the inner side of the Y-shaped large pull rod branch, and the branch is less likely to vibrate and deform, and the design is more reasonable.
[0026] Beneficial effects of the utility model:
[0027] The utility model arranges an inclined panel on the flat bottom plate, and respectively arranges end limit rods and limit fixing devices on the flat bottom plate and the inclined panel, so as to provide good support and limit fixing for the special-shaped Y-shaped large pull rod as a whole. Compared with traditional fixing tooling, the fixing tooling of the utility model has better fixing effect and higher processing accuracy.
[0028] The utility model connects the end limit rod with the flat bottom plate by threads, which ensures a firm connection and facilitates replacement, and has a more reasonable design.
[0029] The utility model improves the limiting and fixing device and utilizes the Z-shaped plate, the fastening screw and the fastening nut to simultaneously complete the limiting and fixing of the Y-shaped large pull rod, which makes the operation simpler. Under the action of the elastic support member, the centering extrusion operation can be achieved, so that the contact between the limiting device and the Y-shaped large pull rod is closer, thereby avoiding limiting deviation.
[0030] The utility model provides a larger sinking space below by arranging sinking grooves on the flat bottom plate and the inclined plate below the Z-shaped plate, so that the downward pressure of the Z-shaped plate can be further increased, and the fixing effect is better.
[0031] The utility model provides an arc chamfered positive angle at the contact side between the Z-shaped plate and the Y-shaped large pull rod, so that feeding and discharging are more convenient and the operation is easier.
[0032] The utility model is convenient for fixing the tooling in the five-axis device by arranging the tooling installation holes, and the operation is more convenient.
[0033] The utility model is convenient for processing operation and has a more reasonable design by arranging the tool withdrawal groove.
[0034] The utility model arranges the third limiting fixing device correspondingly on the inner side of the Y-shaped large pull rod branch, so that when the end of the branch is processed, the supporting effect on the branch is better, the branch is less likely to vibrate and deform, and the design is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Attached Figure 1 It is the plane design drawing of the utility model;
[0036] Attached Figure 2 It is a side view of the utility model;
[0037] Attached Figure 3 It is a structural schematic diagram of the position limiting and fixing device of the utility model;
[0038] Attached Figure 4 This is a rendering of the effect of the fixed tooling of the utility model when it is in use.
[0039] Explanation of the accompanying drawings: 1-flat bottom plate, 2-inclined plate, 3-end limiting rod, 4-first limiting fixing device, 5-second limiting fixing device, 6-third limiting fixing device, 7-inner threaded hole, 8-Z-shaped plate, 9-rotating shaft, 10-elastic support member, 11-long strip hole, 12-fastening screw, 13-fastening nut, 14-first back-knife groove, 15-second back-knife groove, 16-third back-knife groove, 17-tooling mounting hole, 18-sliding groove, 19-arc chamfer, 20-sinking groove, 21-Y-shaped large pull rod. DETAILED DESCRIPTION
[0040] The present invention is further described below in conjunction with the embodiments, but is not intended to be a basis for limiting the present invention.
[0041] Embodiments of the present utility model
[0042] A five-axis machining fixture for Y-shaped large tie rods of aircraft engines, as shown in the attached Figure 1-3 As shown, it comprises a flat bottom plate 1, an inclined panel 2 is provided on the upper side of one end of the flat bottom plate 1 in the length direction, and an end stopper rod 3 is provided in the middle of the upper side of the other end;
[0043] A pair of symmetrically arranged first limiting fixtures 4 and a pair of symmetrically arranged second limiting fixtures 5 are distributed along a straight line on the flat bottom plate 1 between the end limiting rod 3 and the inclined plate 2. The first limiting fixtures 4 and the second limiting fixtures 5 correspond to the main trunk positions of the Y-shaped large pull rod.
[0044] A pair of symmetrically arranged third position-limiting fixing devices 6 are symmetrically arranged on the inclined panel 2, and the two third position-limiting fixing devices 6 correspond to the branch positions of the Y-shaped large pull rod respectively.
[0045] In the specific implementation of this embodiment, Figure 4 As shown, first place the trunk of the Y-shaped large pull rod 21 on the flat bottom plate 1, and place the branches on the inclined panel 2. The end of the Y-shaped large pull rod 21 is against the limit rod 3, and then use the first limit fixing device 4, the second limit fixing device 5 and the third limit fixing device 6 in sequence to limit and fix it, and then put it into the five-axis equipment for processing.
[0046] Further implementation examples include Figure 1-3 As shown, the flat bottom plate 1 at the end limit rod 3 is provided with an internal threaded hole 7, and the end limit rod 3 is threadedly connected to the flat bottom plate 1. When the end limit rod 3 is worn or deformed due to long-term use, it can be directly unscrewed and replaced to ensure the limit accuracy.
[0047] Further implementation examples include Figure 1-3 As shown, the first limiting fixing device 4, the second limiting fixing device 5 and the third limiting fixing device 6 have the same structure, including a Z-shaped plate 8, one end of the Z-shaped plate 8 is movably connected to the sliding groove 18 via a rotating shaft 9, the sliding groove 18 is provided on the flat bottom plate 1 and the inclined plate 2, an elastic support member 10 is provided on the rear side of the sliding groove 18, a long strip hole 11 is provided in the middle of the Z-shaped plate 8, a fastening screw 12 is provided on the flat bottom plate 1 and the inclined plate 2 below the long strip hole 11, and a fastening nut 13 is provided on the fastening screw 12.
[0048] When the position-limiting fixing device of this embodiment is operated, the Z-shaped plate 8 is first turned upward to increase the spacing between the Z-shaped plates 8 on both sides, and then the Y-shaped large pull rod 21 is placed between the Z-shaped plates 8 on both sides, and the Z-shaped plate 8 is pressed down so that its end is pressed on the upper end surface of the Y-shaped large pull rod 21, and the Z-shaped plate 8 is squeezed toward the side of the Y-shaped large pull rod 21 under the rebound effect of the rear elastic support member 10, so as to complete the centering of the Y-shaped large pull rod 21, and finally the fastening nut 13 is tightened. Preferably, the elastic support member 10 is a spring or an elastic rubber pad, and the elastic rubber pad is used in this embodiment.
[0049] Further implementation examples include Figure 1-3As shown, a sinking groove 20 is provided on the flat bottom plate 1 and the inclined plate 2 below the Z-shaped plate 8, and the sliding groove 18 is provided on the side wall in the sinking groove 20. When the Z-shaped plate 8 is laid flat, the bottom of the sinking groove 20 is still lower than the lower side of the Z-shaped plate 8, so that the Z-shaped plate 8 has more sinking space. When the end of the Z-shaped plate 8 is pressed on the Y-shaped large pull rod 21, the fastening nut 13 is tightened, and the Z-shaped plate 8 can obtain a greater downward force.
[0050] Further implementation examples include Figure 1-3 As shown, the positive corner of the Z-shaped plate 8 on the contact side with the Y-shaped large pull rod is provided with an arc chamfer 19.
[0051] Further implementation examples include Figure 1-3 As shown, the flat bottom plate 1 is provided with a tooling installation hole 17. During five-axis machining, the fixed tooling can be fixed in the five-axis equipment by using screws through the tooling installation hole 17.
[0052] Further implementation examples include Figure 1-3 As shown, the flat bottom plate 1 is provided with a first undercut 14, a second undercut 15 and a third undercut 16 at the position corresponding to the processing of the Y-shaped large pull rod. The first undercut 14, the second undercut 15 and the third undercut 16 are used for undercutting during processing.
[0053] Further implementation examples include Figure 1-3 As shown, the third position-limiting fixture 6 corresponds to the inner side of the Y-shaped large pull rod branch. When the Y-shaped large pull rod 21 is installed, the third position-limiting fixture 6 can support the inner side of the branch, and the drill bit is processed from the outside to the inside, which is more stable under the support of the third position-limiting fixture 6.
[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and the utility model of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A five-axis machining fixture for Y-shaped large tie rods of aircraft engines, characterized by: It comprises a flat bottom plate (1), wherein an inclined panel (2) is provided on the upper side of one end in the length direction of the flat bottom plate (1), and an end stop rod (3) is provided in the middle of the upper side of the other end; A pair of symmetrically arranged first limit fixing devices (4) and a pair of symmetrically arranged second limit fixing devices (5) are distributed along a straight line on the flat bottom plate (1) between the end limit rod (3) and the inclined plate (2), and the first limit fixing devices (4) and the second limit fixing devices (5) correspond to the main trunk position of the Y-shaped large pull rod; A pair of symmetrically arranged third position-limiting fixing devices (6) are symmetrically arranged on the inclined panel (2), and the two third position-limiting fixing devices (6) respectively correspond to the branch positions of the Y-shaped large pull rod.
2. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 1 is characterized in that: An internal thread hole (7) is provided on the flat bottom plate (1) at the end limit rod (3), and the end limit rod (3) and the flat bottom plate (1) are connected via threads.
3. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 1 is characterized in that: The first limiting fixing device (4), the second limiting fixing device (5) and the third limiting fixing device (6) have the same structure, comprising a Z-shaped plate (8), one end of the Z-shaped plate (8) being movably connected to a sliding groove (18) via a rotating shaft (9), the sliding groove (18) being arranged on the flat bottom plate (1) and the inclined plate (2), an elastic supporting member (10) being arranged on the rear side of the sliding groove (18), a long strip hole (11) being arranged in the middle of the Z-shaped plate (8), a fastening screw (12) being arranged on the flat bottom plate (1) and the inclined plate (2) below the long strip hole (11), and a fastening nut (13) being arranged on the fastening screw (12).
4. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 3 is characterized in that: A sinking groove (20) is provided on the flat bottom plate (1) and the inclined plate (2) below the Z-shaped plate (8), and the sliding groove (18) is provided on the side wall inside the sinking groove (20).
5. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 3 is characterized in that: The positive corner of the Z-shaped plate (8) on the contact side with the Y-shaped large pull rod is provided with an arc chamfer (19).
6. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 3 is characterized in that: The elastic support member (10) is a spring or an elastic rubber pad.
7. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 1, characterized in that: The flat bottom plate (1) is provided with a tooling installation hole (17).
8. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 1, characterized in that: A first undercut groove (14), a second undercut groove (15) and a third undercut groove (16) are provided at positions on the flat bottom plate (1) corresponding to the processing of the Y-shaped large pull rod.
9. The five-axis machining fixture for Y-shaped large tie rods of an aircraft engine according to claim 1, characterized in that: The third limiting and fixing device (6) corresponds to the inner side of the Y-shaped large pull rod branch.