Device for machining plane of outer circle of propeller connecting rod

Abstract

The invention relates to the technical field of aerospace accessory machining, and discloses a device for machining an outer circle plane of a propeller connecting rod, the device comprises a bottom plate, and a first supporting seat, a second supporting seat and a bayonet socket which are arranged on the bottom plate, a first screw rod is inserted into the first supporting seat and is provided with a tip, and the second supporting seat is inserted with a thimble and is provided with a knob; a second spring is arranged in the bayonet socket, a second screw rod is screwed on the front side of the bayonet socket, and a plug is correspondingly screwed at the bottom of the bottom plate; the nut is screwed to the first screw, a first spring is arranged outside the ejector pin, and the ejector pin and the center axis are on the same level. The device is accurately matched and positioned with top holes in two ends of the connecting rod through the tip, the ejector pin and the connecting rod to ensure that the whole machining process takes a unified standard as reference to avoid dimensional deviation; the contact state of the second spring floating supporting head mechanism can be flexibly adjusted, stable supporting is formed after the second spring floating supporting head mechanism is fixed through a second screw, machining vibration or displacement is effectively avoided, and the form and location tolerance precision is further guaranteed.

Description

Technical Field

[0001] This invention relates to the field of aerospace component processing technology, specifically to a device for processing the outer cylindrical plane of a propeller connecting rod. Background Technology

[0002] The propeller is a key component of the power machinery of a turboprop aircraft. As a major component of the propeller, the connecting rod's main function is to drive the propeller blades to change pitch through linkage transmission, thereby providing the propeller aircraft with maximum power (thrust or thrust).

[0003] Common clamping and support devices used for machining the outer cylindrical plane of propeller connecting rods, while possessing basic positioning and support functions, struggle to establish a precise and uniform mating datum with the center holes at both ends of the connecting rod during positioning, leading to datum offset during machining. Furthermore, the support structure cannot flexibly adapt to the outer cylindrical surface shape of the connecting rod, resulting in either poor contact or insufficient stability after fixing. Vibration or displacement due to support issues during machining ultimately affects the dimensional accuracy and geometric tolerances of the outer cylindrical plane, failing to meet the working requirements of aerospace component machining. Therefore, a device for machining the outer cylindrical plane of propeller connecting rods is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device for machining the outer circular plane of a propeller connecting rod, thereby solving the technical problems of inaccurate positioning references and unstable support leading to poor machining accuracy.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for machining the outer cylindrical plane of a propeller connecting rod, comprising:

[0006] A base plate, wherein a first support seat is connected to one side of the top of the base plate, a second support seat is installed on the other side of the top of the base plate, and a plug-in seat is installed on the top of the base plate between the first support seat and the second support seat.

[0007] The first screw is inserted inside the first support seat. The mating surface of the first screw is equipped with a center point. The upper side of the inside of the second support seat is inserted with a pin. A knob is screwed into the inside of the second support seat at a position corresponding to the pin.

[0008] A support head is inserted inside the connector, and a second spring is inserted inside the support head. A second screw is screwed onto the front side of the connector, and a plug is screwed onto the bottom of the base plate at a position corresponding to the support head.

[0009] A nut is screwed onto the outside of the first screw, and a first spring is sleeved on the outside of the ejector pin. The axes of the ejector pin and the tip are located on the same horizontal line.

[0010] Preferably, the side diameter of the tip is larger than the diameter of the first screw, the length of the first screw is twice that of the first support, and the end of the ejector pin located inside the second support has a T-shaped rod structure. The tip diameter is larger than that of the first screw, which can effectively limit the tip and prevent it from shifting into the first support during clamping or processing, thus ensuring the stability of the positioning reference. The first screw has better adaptability and the tip position can be flexibly adjusted according to the length of the connecting rod. The T-shaped rod structure of the ejector pin can limit its disengagement from the second support, improve the reliability of the clamping process, and provide a basic guarantee for the machining accuracy of the connecting rod.

[0011] Preferably, a groove is formed on the outside of the support head at a position corresponding to the second screw. The bottom of the groove is a planar structure. The height of the second spring is greater than the height of the support head. The bottom of the groove of the support head is planar, which can form a surface contact when it is engaged with the second screw. It is not easy to slip after clamping, making the support head more stable. The second spring is also higher, which can provide sufficient preload, so that the support head can fit tightly against the surface of the connecting rod, reducing vibration caused by insufficient support during processing, and further ensuring the form and position tolerance accuracy of the outer circle plane of the connecting rod.

[0012] Preferably, the outer ends of the second screw and the knob are coaxially connected to a handle, the handle is decorated with anti-slip texture, the plug has a hollow structure inside, and a lever is installed inside the plug. The handle makes it easy for the operator to turn the second screw and the knob without additional tools, improving the ease of operation; the anti-slip texture on the outside of the handle increases the friction of the hand, preventing slippage during operation, saving effort and ensuring safety; the hollow plug with a built-in lever facilitates quick disassembly or adjustment of the plug, reducing clamping preparation time and adapting to batch processing scenarios.

[0013] Preferably, a lead screw is screwed to the lower inner side of the second support base. The length of the lead screw is greater than the length of the second support base. A bearing head is installed at the end of the lead screw facing the insertion seat. The lead screw is long enough to flexibly adjust the extension distance to adapt to the processing requirements of connecting rods of different sizes. The bearing head can reduce the friction between the lead screw and other components when the lead screw rotates, making the adjustment process smoother. At the same time, it can prevent the lead screw from deviating and affecting the positioning accuracy, making the auxiliary support or positioning of the connecting rod by the lead screw more stable, and indirectly improving the processing accuracy.

[0014] Preferably, a handwheel is installed at the other end of the lead screw, a connecting frame is installed on the outside of the bearing head, a hinge seat is installed on the top of the connecting frame, and a snap-fit ​​connector is hinged inside the hinge seat. The lead screw is long enough to flexibly adjust the extension distance to adapt to the processing requirements of connecting rods of different sizes. The bearing head can reduce the friction between the lead screw and other components when the lead screw rotates, making the adjustment process smoother. At the same time, it can prevent the lead screw from deviating and affecting the positioning accuracy, making the auxiliary support or positioning of the lead screw for the connecting rod more stable, and indirectly improving the processing accuracy.

[0015] Preferably, the top of the clamping connector is U-shaped, the sides of the clamping connector are inclined, the sides of the connecting frame fit against the sides of the clamping connector, the left side of the top of the clamping connector is lower than the right side, the handwheel allows the operator to easily rotate the lead screw, which is less labor-intensive than directly turning the lead screw and allows for precise control of the adjustment amount; the connecting frame is equipped with a hinge seat, which allows the clamping connector to flexibly adjust its angle and adapt to the shape of different parts of the connecting rod. The clamping connector can assist in clamping the connecting rod, further improving the clamping firmness and reducing displacement during processing.

[0016] Preferably, a support plate is connected to the side of the connector, and a secondary plate is connected to both outer sides of the support plate. The upper surfaces of the support plate and the secondary plates are covered with rubber pads.

[0017] Preferably, a rod is inserted into the upper inner side of the connecting frame, a transmission head is sleeved on the outer end of the rod, and a third spring is sleeved on the outside of the rod.

[0018] Preferably, the left and right ends of the third spring are connected to the inner wall of the transmission head and the side of the connecting frame, respectively. The outer side of the transmission head contacts the outer side of the clamping head. By rotating the lead screw, the connecting frame is moved laterally. After the propeller connecting rod is clamped, the lead screw drives the movement of the clamping head, so that the clamping head is squeezed and tilted after contacting the propeller connecting rod. This allows the clamping head to change from an tilted state to a horizontal state, which can assist in the positioning and clamping of the propeller connecting rod. Furthermore, the support plate and the auxiliary plate can provide auxiliary support for the bottom of the propeller connecting rod, improving the stability of the propeller connecting rod clamping and preventing it from shaking during processing.

[0019] Compared with the prior art, the present invention provides a device for machining the outer cylindrical plane of a propeller connecting rod, which has the following beneficial effects:

[0020] This device for machining the outer cylindrical surface of a propeller connecting rod directly inserts both ends of the propeller connecting rod between the center and the ejector pin, so that the lower surface of the propeller connecting rod contacts the top of the support head. Simultaneously, the second screw clamps the support head, thus supporting the propeller connecting rod. Finally, rotating the knob drives the ejector pin to complete the clamping of the propeller connecting rod. This allows for precise positioning through the precise engagement of the center and ejector pin with the top holes at both ends of the propeller connecting rod. This ensures that the part is machined using a unified reference throughout the process, avoiding dimensional deviations caused by reference offsets in general clamping, and laying a stable foundation for the machining accuracy of the outer cylindrical surface. The second spring floating support head mechanism can flexibly adjust its contact state with the part surface, and after being fixed by the second screw, it forms a stable support, effectively avoiding vibration or displacement of the part due to insufficient support during machining, further ensuring the accuracy of form and position tolerances. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the connector structure of the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of the first support seat of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the second support of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of the connector structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the second spring structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the second support seat and lead screw structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the connecting frame structure of the present invention.

[0029] In the diagram: 1. Base plate; 2. First support seat; 3. Second support seat; 4. Insertion seat; 5. First screw; 6. Center; 7. Ejector pin; 8. First spring; 9. Knob; 10. Support head; 11. Second screw; 12. Plug; 13. Groove; 14. Second spring; 15. Nut; 16. Lead screw; 17. Bearing head; 18. Connecting frame; 19. Hinge seat; 20. Snap connector; 21. Support plate; 22. Sub-plate; 23. Insert rod; 24. Transmission head; 25. Third spring. Detailed Implementation

[0030] The technical solutions of 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.

[0031] This invention provides a technical solution: a device for machining the outer circular plane of a propeller connecting rod, comprising a base plate 1, a first support seat 2, a second support seat 3, a plug seat 4, a first screw 5, a center 6, a ejector pin 7, a first spring 8, a knob 9, a support head 10, a second screw 11, a plug 12, a groove 13, a second spring 14, a nut 15, a lead screw 16, a bearing head 17, a connecting frame 18, a hinge seat 19, a snap-fit ​​connector 20, a support plate 21, a secondary plate 22, a plug rod 23, a transmission head 24, and a third spring 25.

[0032] Please see Figure 1A first support 2 is connected to one side of the top of the base plate 1, and a second support 3 is installed on the other side of the top of the base plate 1. Please refer to [link / reference]. Figure 2 A plug-in seat 4 is installed on the top of the base plate 1 at the position between the first support seat 2 and the second support seat 3;

[0033] Please see Figure 3 The first screw 5 is inserted inside the first support 2, and the mating surface of the first screw 5 is equipped with a center 6. Please refer to [link / reference]. Figure 4 A pin 7 is inserted into the upper side of the interior of the second support 3, and a knob 9 is screwed into the interior of the second support 3 at a position corresponding to the pin 7.

[0034] Please see Figure 5 The support head 10 is inserted inside the connector 4. Please refer to [link / reference]. Figure 6 The support head 10 is equipped with a second spring 14, the front side of the plug seat 4 is screwed with a second screw 11, and the bottom of the base plate 1 is screwed with a plug 12 at the position corresponding to the support head 10.

[0035] By directly inserting both ends of the propeller connecting rod between the tip 6 and the ejector pin 7, the lower surface of the propeller connecting rod contacts the top of the support head 10. At the same time, by rotating the second screw 11 to clamp the support head 10, the propeller connecting rod can be supported. Finally, by rotating the knob 9 to push the ejector pin 7 to move, the propeller connecting rod is clamped. The precise cooperation between the tip 6 and the ejector pin 7 and the top holes at both ends of the propeller connecting rod enables positioning. This ensures that the parts are machined with a unified reference throughout the process, avoiding dimensional deviations caused by reference offsets in general clamping. This lays a stable foundation for the machining accuracy of the outer cylindrical plane. The floating support head 10 mechanism of the second spring 14 can flexibly adjust the contact state with the surface of the parts. After being fixed by the second screw 11, it forms a stable support, effectively avoiding vibration or displacement of the parts caused by inadequate support during machining, and further ensuring the accuracy of form and position tolerances.

[0036] Please see Figure 3 Nut 15 is screwed onto the outside of the first screw 5. Please refer to [link / reference]. Figure 4 The ejector pin 7 is fitted with a first spring 8. The axes of the ejector pin 7 and the tip 6 are on the same horizontal line. The side diameter of the tip 6 is larger than the diameter of the first screw 5. The length of the first screw 5 is twice that of the first support 2. The end of the ejector pin 7 located inside the second support 3 is a T-shaped rod structure.

[0037] Please see Figure 5A groove 13 is provided on the outside of the support head 10 at a position corresponding to the second screw 11. The bottom of the groove 13 is a flat structure. The height of the second spring 14 is greater than the height of the support head 10. A handle is coaxially connected to the outer ends of both the second screw 11 and the knob 9. The handle is decorated with anti-slip texture. The plug 12 has a hollow structure inside and contains a paddle. Please refer to [link / reference]. Figure 7 A lead screw 16 is screwed to the lower side of the interior of the second support seat 3. The length of the lead screw 16 is greater than the length of the second support seat 3. A bearing head 17 is installed at the end of the lead screw 16 facing the plug seat 4.

[0038] Please see Figure 8 A handwheel is installed at the other end of the lead screw 16. A connecting frame 18 is installed on the outside of the bearing head 17. A hinge seat 19 is installed on the top of the connecting frame 18. A snap-fit ​​connector 20 is hinged inside the hinge seat 19. The top of the snap-fit ​​connector 20 is U-shaped. The side of the snap-fit ​​connector 20 is inclined. The side of the connecting frame 18 fits against the side of the snap-fit ​​connector 20. The height of the left side of the top of the snap-fit ​​connector 20 is less than that of the right side.

[0039] The side of the clamping connector 20 is connected to a support plate 21, and both outer sides of the support plate 21 are connected to auxiliary plates 22. By rotating the lead screw 16, the connecting frame 18 is moved laterally. After the propeller connecting rod is clamped, the lead screw 16 drives the clamping connector 20 to move, so that after the clamping connector 20 contacts the propeller connecting rod, it is squeezed and tilted, thereby changing the clamping connector 20 from an tilted state to a horizontal state. This allows for auxiliary positioning and clamping of the propeller connecting rod, and the support plate 21 and auxiliary plates 22 can be used to fix the propeller. The bottom of the propeller connecting rod is provided with auxiliary support to improve the stability of the propeller connecting rod clamping and prevent it from shaking during processing. The upper surfaces of the support plate 21 and the auxiliary plate 22 are covered with rubber pads. The upper side of the inside of the connecting frame 18 is inserted with a rod 23. The outer end of the rod 23 is fitted with a transmission head 24. The outside of the rod 23 is fitted with a third spring 25. The left and right ends of the third spring 25 are connected to the inner wall of the transmission head 24 and the side of the connecting frame 18, respectively. The outer side of the transmission head 24 is in contact with the outside of the snap-fit ​​connector 20.

[0040] This design directly inserts both ends of the propeller connecting rod between the center tip 6 and the ejector pin 7, ensuring that the lower surface of the propeller connecting rod contacts the top of the support head 10. Simultaneously, rotating the second screw 11 clamps the support head 10, thus supporting the propeller connecting rod. Finally, rotating the knob 9 moves the ejector pin 7 to complete the clamping of the propeller connecting rod. This precise engagement of the center tip 6 and ejector pin 7 with the top holes at both ends of the propeller connecting rod ensures accurate positioning. This guarantees that the part is machined using a unified datum throughout the entire process, avoiding dimensional deviations caused by datum offsets in general clamping. This lays a stable foundation for the machining accuracy of the outer cylindrical surface. Furthermore, the floating support head 10 mechanism of the second spring 14 can flexibly adjust the contact state with the part surface. After being fixed by the second screw 11, a stable support is formed, which effectively avoids vibration or displacement of the parts caused by insufficient support during processing, and further ensures the accuracy of form and position tolerances. At the same time, by rotating the lead screw 16, the connecting frame 18 is moved laterally. After the propeller connecting rod is clamped, the lead screw 16 drives the movement of the clamping head 20. After the clamping head 20 contacts the propeller connecting rod, it is squeezed and tilted, so that the clamping head 20 changes from an inclined state to a horizontal state. This allows for auxiliary positioning and clamping of the propeller connecting rod. Furthermore, the support plate 21 and the auxiliary plate 22 can provide auxiliary support for the bottom of the propeller connecting rod, improving the stability of the propeller connecting rod clamping and preventing it from shaking during processing.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for machining the outer cylindrical plane of a propeller connecting rod, characterized in that, include: A base plate (1) is provided with a first support seat (2) connected to one side of the top of the base plate (1) and a second support seat (3) installed on the other side of the top of the base plate (1). A plug-in seat (4) is installed on the top of the base plate (1) at the position between the first support seat (2) and the second support seat (3). The first screw (5) is inserted inside the first support seat (2). The mating surface of the first screw (5) is equipped with a tip (6). The upper side of the interior of the second support seat (3) is inserted with a pin (7). A knob (9) is screwed into the interior of the second support seat (3) at a position corresponding to the pin (7). A support head (10) is inserted inside the plug-in seat (4). A second spring (14) is inserted inside the support head (10). A second screw (11) is screwed onto the front side of the plug-in seat (4). A plug (12) is screwed onto the bottom of the base plate (1) at a position corresponding to the support head (10). A nut (15) is screwed onto the outside of the first screw (5), and a first spring (8) is sleeved on the outside of the ejector pin (7). The axes of the ejector pin (7) and the tip (6) are located on the same horizontal line.

2. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 1, characterized in that: The side diameter of the tip (6) is greater than the diameter of the first screw (5), the length of the first screw (5) is twice that of the first support (2), and the end of the pin (7) located inside the second support (3) is a T-shaped rod structure.

3. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 1, characterized in that: The support head (10) has a groove (13) on its outer side corresponding to the second screw (11). The bottom of the groove (13) is a planar structure. The height of the second spring (14) is greater than the height of the support head (10).

4. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 1, characterized in that: The outer ends of the second screw (11) and the knob (9) are coaxially connected to handles. The handles are equipped with anti-slip textures on the outside. The plug (12) has a hollow structure inside and a paddle is installed inside the plug (12).

5. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 1, characterized in that: A lead screw (16) is screwed to the lower inner side of the second support (3). The length of the lead screw (16) is greater than the length of the second support (3). A bearing head (17) is installed at one end of the lead screw (16) facing the plug-in seat (4).

6. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 5, characterized in that: The other end of the lead screw (16) is equipped with a handwheel, and a connecting frame (18) is installed on the outside of the bearing head (17). A hinge seat (19) is installed on the top of the connecting frame (18), and a snap-fit ​​connector (20) is hinged inside the hinge seat (19).

7. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 6, characterized in that: The top of the connector (20) is U-shaped, the side of the connector (20) is inclined, the side of the connecting bracket (18) is in contact with the side of the connector (20), and the height of the left side of the top of the connector (20) is less than that of the right side.

8. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 7, characterized in that: The side of the connector (20) is connected to a support plate (21), and the outer sides of the support plate (21) are connected to sub-plates (22). The upper surfaces of the support plate (21) and the sub-plates (22) are covered with rubber pads.

9. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 6, characterized in that: A rod (23) is inserted into the upper side of the inside of the connecting frame (18), a transmission head (24) is sleeved on the outer end of the rod (23), and a third spring (25) is sleeved on the outside of the rod (23).

10. The apparatus for machining the outer cylindrical plane of a propeller connecting rod according to claim 9, characterized in that: The left and right ends of the third spring (25) are connected to the inner wall of the transmission head (24) and the side of the connecting frame (18) respectively, and the outer side of the transmission head (24) is in contact with the outside of the snap-fit ​​connector (20).

Images