Turning tool for inner cavity of central piece on high-speed helicopter rotor system
By designing an adjustable-angle turning tool, the problems of complex structure and high machining difficulty of the central component of the high-speed helicopter rotor system were solved, improving machining efficiency and dimensional accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGHE AIRCRAFT INDUSTRIES CORPORATION
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-24
AI Technical Summary
The central component of the high-speed helicopter rotor system has a complex structure, poor manufacturability, and high machining difficulty. Conventional cutting tools cannot meet its machining requirements.
A turning tool comprising a tool holder, an adjustment mechanism, a tool shank, an insert, and a locking screw has been designed. The tool shank and insert are precisely positioned and fixed by an adjustable angle adjustment mechanism and a locking device, making it suitable for machining rotating bodies in confined spaces.
It improves the turning efficiency of the inner cavity of the rotor central component, ensures the accuracy and stability of the machining dimensions, and solves the problem of difficult machining of rotating bodies in narrow spaces.
Smart Images
Figure CN224157774U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of helicopters, and in particular to a turning tool for the inner cavity of a central component in a high-speed helicopter rotor system. Background Technology
[0002] like Figure 1 As shown, the central component 1 in the high-speed helicopter rotor system is an integration of multiple parts. Due to its performance requirements and structural characteristics, the number of parts and assembly processes are reduced, which effectively reduces the overall weight of the aircraft and improves the strength and reliability of the parts. However, the structure is complex, the manufacturability is poor, and the machining is difficult. Conventional turning tools cannot meet the machining requirements of the central component's internal cavity. Summary of the Invention
[0003] Please provide a turning tool for the inner cavity of the central component in a high-speed helicopter rotor system, which can solve the problems of complex structure, poor manufacturability, and high machining difficulty of the central component in the high-speed helicopter rotor system.
[0004] Technical solution: A turning tool for the inner cavity of a central component in a high-speed helicopter rotor system, comprising a tool holder 3, an adjustment mechanism 4, a tool shank 5, an insert 6, a fixing screw 7, a first locking screw 8, and a second locking screw 9, wherein:
[0005] The tool holder 3 is provided with an adjustment mechanism mounting hole, a tool holder 5 mounting slot, a first locking screw 8 mounting threaded hole, and a second locking screw 9 mounting threaded hole; the adjustment mechanism 4 is provided with a spindle, external teeth, a hexagonal countersunk head adjustment hole, and a locking bolt; the tool holder 5 is provided with internal teeth, a cutting tool mounting slot, and a threaded hole; the tool holder 3 is U-shaped, and the tool shank in the tool holder 3 is designed to be circular for easy connection with the machine tool; the adjustment mechanism mounting hole in the tool holder 3 is a stepped hole to facilitate the installation and fixation of the adjustment mechanism 4, and the tool holder 5 is installed in the tool holder 5 mounting slot on the tool holder 3 with clearance fit, and the installation position is determined by the external teeth on the adjustment mechanism 4.
[0006] Specifically, the spindle on the adjustment mechanism 4 engages with the small hole of the adjustment mechanism mounting hole on the tool holder 3 to position the adjustment mechanism 4 on the tool holder 3. The external teeth on the adjustment mechanism 4 engage with the internal teeth of the tool bar 5 to achieve rotation of the tool bar 5 on the tool holder 3 through the adjustment mechanism 4.
[0007] Specifically, the internal teeth on the cutter bar 5 cooperate with the external teeth on the adjustment mechanism 4 to play a role in positioning and turning. The blade groove on the cutter bar 5 cooperates with the blade 6, and the blade 6 is positioned and fixed on the cutter bar 5 by the fixing screw 7.
[0008] Specifically, the blade 6 is a standard part, installed in the blade groove on the tool holder 5. Different groove types of blades are selected according to the needs of the processing scenario, and the blade groove on the tool holder 5 is designed according to the blade groove type.
[0009] Specifically, the fixing screw 7 is threaded into the blade groove on the tool holder 5 to position and fix the blade 6 on the tool holder 5.
[0010] Specifically, the first locking screw 8 is installed on the threaded through hole on the side of the tool holder 3, and one end of the first locking screw 8 is pressed firmly on the surface of the tool holder 5, thereby achieving locking and fixing of the tool holder 5 during the machining process.
[0011] The first locking screw 8 is installed on the mounting part of the adjustment mechanism on the tool holder 3. One end of the first locking screw 8 is pressed firmly on the surface of the spindle of the adjustment mechanism 4, and the adjustment mechanism 4 is locked by the first locking screw 8.
[0012] In summary, this application provides a turning tool for the inner cavity of a central component in a high-speed helicopter rotor system. By inventing an adjustable-angle turning tool, the problem of difficult machining of the inner cavity of a rotating body in a narrow space is solved, the turning efficiency of the inner cavity of the rotor central component is improved, and its dimensional requirements are effectively guaranteed. Attached Figure Description
[0013] Figure 1 A front view of the central component of a high-speed helicopter rotor system;
[0014] Figure 2 A side view of the central component of a high-speed helicopter rotor system;
[0015] Figure 3 A schematic diagram of machining of a turning tool for the inner cavity of a central component in a high-speed helicopter rotor system provided in this application;
[0016] Figure 4 A schematic diagram of a turning tool for the inner cavity of a central component in a high-speed helicopter rotor system provided in this application;
[0017] Figure 5 A schematic diagram of a turning tool for the internal cavity of a central component in a high-speed helicopter rotor system provided in this application;
[0018] Among them: 1-Central part, 2-Internal cavity turning tool, 3-Tool holder, 4-Adjustment mechanism, 5-Tool bar, 6-Insert tool, 7-Fixing screw, 8-First locking screw, 9-Second locking screw. Detailed Implementation
[0019] This invention provides a turning tool for the internal cavity of a central component in a high-speed helicopter rotor system, used for machining rotating bodies within confined spaces (such as...). Figure 3 This can improve the machining efficiency of the internal cavity of the rotor's central component, effectively ensuring its dimensional requirements.
[0020] Example 1
[0021] like Figure 3-5As shown, the present invention provides a turning tool 2 for the internal cavity of the central component of a high-speed helicopter rotor system, comprising a tool holder 3, an adjustment mechanism 4, and a tool shank 5, wherein:
[0022] The tool holder 3 is shaped like the number 7 and has an adjustment mechanism mounting hole, a tool holder 5 mounting slot, a first locking screw 8 mounting threaded hole, and a second locking screw 9 mounting threaded hole. The adjustment mechanism 4 has a mandrel at both ends and has a mandrel, external teeth, a hexagonal countersunk head adjustment hole, and a locking bolt. The tool holder 5 is long and has internal teeth, a blade mounting slot, and a threaded hole. The tool holder in the tool holder 3 is designed to be circular for easy connection with the machine tool. The adjustment mechanism mounting hole in the tool holder 3 is a stepped hole to facilitate the installation and fixation of the adjustment mechanism 4. The tool holder 5 is installed in the tool holder 5 mounting slot on the tool holder 3, and the two are clearance fit. The installation position is determined by the external teeth on the adjustment mechanism 4.
[0023] Specifically, the spindle on the adjustment mechanism 4 engages with the small hole of the adjustment mechanism mounting hole on the tool holder 3 to position the adjustment mechanism 4 on the tool holder 3. The external teeth on the adjustment mechanism 4 engage with the internal teeth of the tool bar 5 to achieve rotation of the tool bar 5 on the tool holder 3 through the adjustment mechanism 4.
[0024] Specifically, the internal teeth on the cutter bar 5 cooperate with the external teeth on the adjustment mechanism 4 to play a role in positioning and turning. The blade groove on the cutter bar 5 cooperates with the blade 6, and the blade 6 is positioned and fixed on the cutter bar 5 by the fixing screw 7.
[0025] Specifically, the tool holder 5 is made of heavy metal material to ensure the rigidity and stability of the tool holder during the machining process.
[0026] Specifically, the blade 6 is a standard part, installed in the blade groove on the tool holder 5. Different groove types of blades can be selected according to the needs of the processing scenario. The blade groove on the tool holder 5 is designed according to the blade groove type.
[0027] Specifically, the fixing screw 7 is threaded into the blade groove on the tool holder 5 to position and fix the blade 6 on the tool holder 5.
[0028] Specifically, the first locking screw 8 is installed on the threaded through hole on the side of the tool holder 3, and one end of the first locking screw 8 is pressed firmly on the surface of the tool holder 5, thereby achieving locking and fixing of the tool holder 5 during the machining process.
[0029] Specifically, the first locking screw 8 is installed on the mounting part of the adjustment mechanism on the tool holder 3. One end of the first locking screw 8 is pressed firmly on the surface of the spindle of the adjustment mechanism 4, and the adjustment mechanism 4 is locked by the first locking screw 8.
[0030] Example 2
[0031] This invention provides a specific operating method for a turning tool for the internal cavity of a central component in a high-speed helicopter rotor system, including:
[0032] Step 1: Loosen the first locking screw 8 and the second locking screw 9. By adjusting the engagement between the external teeth on the adjusting mechanism 4 and the internal teeth on the tool holder 5, the angle of the tool holder can be adjusted according to the needs of the machining scenario. Figure 4 The angle adjustment range of the tool holder 5 is ±95°, which is suitable for various processing scenarios;
[0033] Step 2: After adjusting the tool holder 5 to the specified angle, tighten the second locking screw 9 to lock the adjustment mechanism 4 to prevent the adjustment mechanism 4 from loosening during processing;
[0034] Step 3: Secure the tool holder 5 by pressing the first locking screw 8 firmly onto the surface of the tool holder 5 to prevent it from moving during machining;
[0035] Step 4: Install the blade 6 into the blade mounting slot of the blade holder 5, and fix and position it using the fixing screw 7.
[0036] Step 5: Install the internal turning tool on the lathe and connect it to the machine tool via the cylindrical part of the tool holder on tool holder 3. After installation, the part can be machined.
[0037] In summary, this application provides a turning tool for the inner cavity of a central component in a high-speed helicopter rotor system. By inventing an adjustable-angle turning tool, the problem of difficult machining of the inner cavity of a rotating body in a narrow space is solved, the turning efficiency of the inner cavity of the rotor central component is improved, and its dimensional requirements are effectively guaranteed.
Claims
1. A turning tool for the inner cavity of a central component in a high-speed helicopter rotor system, characterized in that, Includes a tool holder (3), an adjustment mechanism (4), a tool holder (5), a blade (6), a fixing screw (7), a first locking screw (8), and a second locking screw (9), wherein: The tool holder (3) is provided with an adjustment mechanism mounting hole, a tool holder (5) mounting groove, a first locking screw (8) mounting threaded hole, and a second locking screw (9) mounting threaded hole; the adjustment mechanism (4) is provided with a spindle, external teeth, a hexagonal countersunk head adjustment hole, and a locking bolt; the tool holder (5) is provided with internal teeth, a blade mounting groove, and a threaded hole; the tool holder (3) is shaped like the number seven, and the tool holder in the tool holder (3) is designed to be circular, which is convenient for connection with the machine tool; the adjustment mechanism mounting hole in the tool holder (3) is a stepped hole, which is convenient for the installation and fixing of the adjustment mechanism (4), and the tool holder (5) is installed in the tool holder (3) mounting groove. The two are clearance fit, and the installation position is determined by the external teeth on the adjustment mechanism (4).
2. The internal turning tool according to claim 1, characterized in that, The mandrel on the adjustment mechanism (4) engages with the small hole of the adjustment mechanism mounting hole on the tool holder (3) to position the adjustment mechanism (4) on the tool holder (3). The external teeth on the adjustment mechanism (4) engage with the internal teeth of the tool bar (5) to rotate the tool bar (5) on the tool holder (3).
3. The internal turning tool according to claim 1, characterized in that, The internal teeth on the cutter bar (5) cooperate with the external teeth on the adjustment mechanism (4) to play the role of positioning and turning. The blade groove on the cutter bar (5) cooperates with the blade (6). The blade (6) is positioned and fixed on the cutter bar (5) by fixing screw (7).
4. The internal turning tool according to claim 1, characterized in that, The blade (6) is a standard part, installed in the blade groove on the tool holder (5). Different groove blades are selected according to the processing scenario. The blade groove on the tool holder (5) is designed according to the blade groove shape.
5. The internal turning tool according to claim 1, characterized in that, The fixing screw (7) is threaded into the blade groove on the tool holder (5) to achieve positioning and fixing of the blade (6) on the tool holder (5).
6. The internal turning tool according to claim 1, characterized in that, The first locking screw (8) is installed on the threaded through hole on the side of the tool holder (3). One end of the first locking screw (8) is pressed firmly on the surface of the tool holder (5), thereby achieving locking and fixing of the tool holder (5) during the machining process.
7. The internal turning tool according to claim 1, characterized in that, The first locking screw (8) is installed on the tool holder (3) on the adjustment mechanism mounting position. One end of the first locking screw (8) is pressed firmly on the surface of the spindle of the adjustment mechanism (4), and the adjustment mechanism (4) is locked by the first locking screw (8).