Weak-rigidity lubricating oil nozzle, positioning clamp and detection method
By designing a positioning fixture for weakly rigid lubricant nozzles, and using positioning pins and measuring pins to achieve accurate positioning, the problem of poor rigidity of the lubricant nozzle structure is solved, the processing quality and efficiency are improved, and the manufacturing cost is reduced.
Patent Information
- Application Number
- CN202510545820.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2025-08-01
AI Technical Summary
The structural rigidity of the aviation oil nozzles is poor, which leads to difficulty in processing, clamping and positioning.
Design a positioning fixture for weakly rigid lubricating oil nozzles, including positioning blocks, pressure plates and detection fixtures, and accurately positioning is achieved through positioning pins and measuring pins, and auxiliary support rods are used to improve rigidity and unify the positioning reference.
It reduces deformation and accumulation errors caused by multiple clamping of lubricating oil nozzles during processing, improves processing quality and efficiency, and reduces manufacturing costs.
Smart Images
Figure CN120402775A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of the processing of lubricating oil nozzles, and particularly relates to a lubricating oil nozzle with weak rigidity, a positioning fixture and a detection method. Background Art
[0002] The function of an aviation lubricating oil nozzle is to convey and spray lubricating oil onto high-speed coupled rotating components to play a role in lubrication and cooling. Due to different usage spaces, its structural shape varies greatly. The structure of a lubricating oil nozzle generally consists of a mounting flange, a mounting hole, an oil supply rod, an oil inlet nozzle and a nozzle. The processing parts of the lubricating oil nozzle are relatively scattered. The nozzle of the lubricating oil nozzle is far from the mounting flange surface, and a cantilever beam structure will be formed during processing, with relatively poor structural rigidity, and it is relatively difficult to clamp and position the lubricating oil nozzle during processing. Summary of the Invention
[0003] The purpose of the present invention is to provide a lubricating oil nozzle with weak rigidity, a positioning fixture and a detection method to solve the problems of relatively poor structural rigidity in the processing of existing lubricating oil nozzles and relatively difficult clamping and positioning in the processing of lubricating oil nozzles.
[0004] To achieve the above purpose, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a lubricating oil nozzle with weak rigidity, including a lubricating oil nozzle, an oil inlet nozzle, an oil supply rod and a mounting flange. One end of the lubricating oil nozzle is a nozzle, which is divided into two paths to connect two oil supply rods. The other end of the lubricating oil nozzle is connected to the oil inlet nozzle, and the mounting flange is arranged on the lubricating oil nozzle.
[0005] Further, the end of one oil supply rod is a plug hole, and the end of the other oil supply rod is a nozzle circle to be welded.
[0006] Further, a limiting boss is arranged on the outer side of the oil supply rod provided with the plug hole.
[0007] In the second aspect, the present invention provides a positioning fixture for a lubricating oil nozzle with weak rigidity, including a positioning block, a pressing plate and a detection fixture. A sinking groove matching the shape of the lubricating oil nozzle with weak rigidity is arranged on one surface of the positioning block. The lubricating oil nozzle with weak rigidity is arranged in the sinking groove, and the lubricating oil nozzle with weak rigidity is fixed on the positioning block through a plurality of pressing plates. The positioning block is installed on the detection fixture for the detection of the oil inlet nozzle, the nozzle circle to be welded and the plug hole.
[0008] Further, an auxiliary support rod is installed on the mounting flange for auxiliary support.
[0009] Further, the other surface of the positioning block is a positioning surface, and a positioning pin is arranged on the positioning surface.
[0010] Further, a plurality of pressing plates are all fixedly connected through bolts.
[0011] Furthermore, a positioning hole matching the positioning pin is provided on the detection fixture, and the positioning pin is arranged in the positioning hole.
[0012] Furthermore, an oil connection nozzle measuring pin, a nozzle to be welded measuring pin, and a plug hole measuring pin are provided on the detection fixture. The oil connection nozzle measuring pin, the nozzle to be welded measuring pin, and the plug hole measuring pin are respectively inserted into the oil connection nozzle, the nozzle to be welded circle, and the plug hole of the lubricating oil nozzle.
[0013] In a third aspect, the present invention provides a detection method for the positioning fixture of the weak-rigidity lubricating oil nozzle, including the following steps: Use a connecting bolt to press and connect the positioning block equipped with the lubricating oil nozzle to the detection fixture; Respectively insert the oil connection nozzle measuring pin, the nozzle to be welded measuring pin, and the plug hole measuring pin into the oil connection nozzle, the nozzle to be welded circle, and the plug hole of the lubricating oil nozzle; If the measuring pin can be inserted into the corresponding hole, it indicates that the blank state and the clamping state of the lubricating oil nozzle are qualified and processing can be carried out. Otherwise, it is necessary to adjust the position of the clamping fixture of the lubricating oil nozzle or the blank is unqualified.
[0014] Compared with the prior art, the present invention has the following technical effects: The positioning fixture used in the present invention unifies the positioning reference in all the machining processes of the lubricating oil nozzle to one plane and two pins of the positioning block, reducing the deformation and accumulated errors caused by multiple clamping during the machining of the lubricating oil nozzle, and improving the machining quality and efficiency of the lubricating oil nozzle. It can unify the positioning reference for the machining of the lubricating oil nozzle. The fixture has a compact structure, is easy to use, simple to maintain, low in manufacturing cost, can reduce part deformation, reduce the accumulated errors caused by multiple clamping, and ensure the machining quality of the lubricating oil nozzle. Description of the Drawings
[0015] Figure 1 It is a schematic diagram of the lubricating oil nozzle of the present invention.
[0016] Figure 2 It is a side view of the lubricating oil nozzle of the present invention.
[0017] Figure 3 It is a front structural schematic diagram of the positioning block equipped with the lubricating oil nozzle of the present invention.
[0018] Figure 4 It is a reverse structural schematic diagram of the positioning block equipped with the lubricating oil nozzle of the present invention.
[0019] Figure 5 It is a structural diagram of the blank detection fixture of the lubricating oil nozzle of the present invention.
[0020] Figure 6 It is a structural diagram of the lathe fixture of the present invention.
[0021] Figure 7This is the structural diagram of the milling fixture of the present invention.
[0022] Among them: 1. Oil inlet nozzle; 2. Installation flange and hole; 3. Spray nozzle; 4. Plug hole; 5. Limit boss; 6. Oil supply rod; 7. Welded spray nozzle circle; 8. Lubricating oil nozzle; 9. Auxiliary support rod; 10. Pressure plate; 11. Positioning pin; 12. Positioning surface; 13. Positioning block; 14. Detection fixture; 15. Oil inlet nozzle measuring pin; 16. Welded spray nozzle measuring pin; 17. Plug hole measuring pin. Specific implementation mode
[0023] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0024] In the description of the present invention, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0026] Embodiment 1, a weak-rigidity lubricating oil nozzle, characterized in that it includes a lubricating oil nozzle 8, an oil inlet nozzle 1, an oil supply rod 6 and an installation flange 2. One end of the lubricating oil nozzle 8 is a spray nozzle 3, which is divided into two paths to connect two oil supply rods 6. The other end of the lubricating oil nozzle 8 is connected to the oil inlet nozzle 1, and the installation flange 2 is arranged on the lubricating oil nozzle 8.
[0027] Structural analysis of the lubricating oil nozzle 8. The blank of this lubricating oil nozzle 8 is a precision casting. The parts to be machined include the oil inlet nozzle 1, the mounting flange 2, the nozzle 3, the plug hole 4, the limiting boss 5, and the nozzle circle 7 to be welded. Its reference A is the center line of the oil inlet nozzle 1, and the reference C is the mounting flange surface 2. The positional tolerance requirements of the nozzle 3 with respect to the references A and C are φ0.1, and the distances from the mounting flange surface 2 and the center line of the oil inlet nozzle 1 are A1 and B1 respectively.
[0028] The main machined parts of this lubricating oil nozzle include the oil inlet nozzle 1, the mounting flange and hole 2, the nozzle 3, the plug hole 4, the limiting boss 5, and the nozzle circle 7 to be welded.
[0029] One end of an oil supply rod 6 is the plug hole 4, and the other end of the oil supply rod 6 is the nozzle circle 7 to be welded.
[0030] A limiting boss 5 is arranged on the outside of the oil supply rod 6 provided with the plug hole 4.
[0031] Embodiment 2. A positioning fixture for a weakly rigid lubricating oil nozzle includes a positioning block 13, a pressing plate 10, and a detection fixture 14. A sink groove matching the shape of the weakly rigid lubricating oil nozzle is arranged on one surface of the positioning block 13. The weakly rigid lubricating oil nozzle is arranged in the sink groove. The weakly rigid lubricating oil nozzle is fixed on the positioning block 13 by a plurality of pressing plates 10. The positioning block 13 is installed on the detection fixture 14 for detecting the oil inlet nozzle 1, the nozzle circle 7 to be welded, and the plug hole 4. The outer shape of the oil supply rod of the lubricating oil nozzle is used for positioning and pressing, so that the positioning block and the lubricating oil nozzle form an integral body. After single-process machining, the lubricating oil nozzle is not disassembled from the positioning block, but the positioning block with the lubricating oil nozzle is installed on the machining fixtures of different processes for machining until the lubricating oil nozzle is disassembled from the positioning block after all machining processes are completed.
[0032] For the positioning block 13 equipped with the lubricating oil nozzle, design a positioning block, machine a surface on the positioning block that can meet the positioning requirements of the lubricating oil nozzle 8, install the lubricating oil nozzle 8 into the positioning block 13, and press it tightly with the pressing plate 10. The pressing plate 10 is selected to be pressed at multiple places. The purpose is to make the lubricating oil nozzle 8 fit with the surface of the positioning block 13 at multiple places, ensure reliable positioning of the lubricating oil nozzle 8, and increase rigidity. Adjust the auxiliary support rod 9 to support the back of the mounting flange and hole 2 of the lubricating oil nozzle 8 to play an auxiliary support role and prevent deformation when machining the mounting surface and hole 2. The positioning surface 12 of the positioning block 13 and the two positioning pins 11 are connected to different fixtures to complete the machining of different parts of the lubricating oil nozzle 8.
[0033] Design a detection fixture. In combination with the positioning block 13 equipped with the lubricating oil nozzle, detect the blank of the lubricating oil nozzle 8 at the position to be machined on the positioning block 13 of the lubricating oil nozzle to ensure uniform distribution of the machining allowance at the position to be machined of the lubricating oil nozzle 8.
[0034] Insert the positioning block 13 with the lubricating oil nozzle into the inspection fixture 14, ensuring that the positioning surface 12 and positioning pin 11 of the positioning block 13 with the lubricating oil nozzle are in fit with the positioning surface and positioning holes of the inspection fixture 14. Use the connecting bolts to press and connect the positioning block 13 with the lubricating oil nozzle to the inspection fixture 14. Insert the oil inlet nozzle measuring pin 15, the nozzle to be welded measuring pin 16, and the plug hole measuring pin 17 into the oil inlet nozzle 1, the nozzle to be welded circle 7, and the plug hole 4 of the lubricating oil nozzle 8 respectively. If the measuring pins can be inserted into the corresponding holes, it indicates that the rough state and clamping state of the lubricating oil nozzle 8 are qualified and processing can be carried out. Otherwise, it is necessary to appropriately adjust the position of the fixture for the lubricating oil nozzle 8 or the blank is unqualified and needs to be replaced.
[0035] Example 3, A detection method for the positioning fixture of a weakly rigid lubricating oil nozzle, comprising the following steps: Use the connecting bolts to press and connect the positioning block 13 with the lubricating oil nozzle to the inspection fixture 14; Insert the oil inlet nozzle measuring pin 15, the nozzle to be welded measuring pin 16, and the plug hole measuring pin 17 into the oil inlet nozzle 1, the nozzle to be welded circle 7, and the plug hole 4 of the lubricating oil nozzle 8 respectively; If the measuring pins can be inserted into the corresponding holes, it indicates that the rough state and clamping state of the lubricating oil nozzle are qualified and processing can be carried out. Otherwise, it is necessary to adjust the position of the fixture for the lubricating oil nozzle 8 or the blank is unqualified.
[0036] Example 4, For the lathe fixture, please refer to Figure 6 , The processing method of the oil inlet nozzle 1 and the mounting flange 2 is preferably turning, and the equipment is a CNC lathe. Design a turning fixture, the structure of which can be connected to both the CNC lathe and the positioning block 13 with the lubricating oil nozzle. The fixture structure that can be connected to the three-jaw chuck of the CNC lathe is simple in structure and convenient for clamping. The structure of the lathe fixture is that the three-jaw chuck of the CNC lathe is connected and clamped with the fixture positioning circle. Insert the positioning block 13 with the lubricating oil nozzle into the positioning hole of the lathe fixture, ensure that the positioning surface 12 of the positioning block 13 with the lubricating oil nozzle fits with the positioning surface of the lathe fixture, and then use the connecting bolts to press the positioning block 13 with the lubricating oil nozzle. During processing, check that the fixture alignment circular runout of the lathe fixture is within a certain range before processing (generally, the runout is within 0.05 mm).
[0037] Example 5, Milling fixture, please refer to Figure 7, the preferred machining method for the mounting holes 2, the nozzle holes 3, the plug holes 4 and the nozzle holes to be welded 7 is milling, and the equipment is a four-axis milling machining center. Design a milling fixture, the structure of which can be connected to the positioning and rotating shaft of the milling machining center and can also be connected to the lubricating oil nozzle positioning block 13. The connection methods of the positioning and rotating shaft of the milling machining center include chuck type and flange type structures, and both of these connection methods are relatively simple and convenient for clamping. The structure of the milling fixture is the way that the three-jaw chuck of the milling machining center is connected to and clamped with the fixture positioning circle of the milling fixture. Install the positioning block 13 with the lubricating oil nozzle into the positioning hole of the milling fixture, ensure that the positioning surface 12 of the positioning block 13 with the lubricating oil nozzle fits with the positioning surface of the milling fixture, and then press the positioning block 13 with the lubricating oil nozzle tightly with the connecting bolts. During machining, align the angular alignment surface of the fixture, and then ensure the machining positions of the mounting holes 2, the nozzle holes 3, the plug holes 4 and the nozzle holes to be welded 7 by rotating the positioning rotating shaft of the milling machining center.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A weak-rigidity lubricating oil nozzle, characterized in that It includes a lubricating oil nozzle (8), an oil inlet nozzle (1), an oil supply rod (6) and a mounting flange (2). One end of the lubricating oil nozzle (8) is a nozzle (3), which is divided into two paths to connect two oil supply rods (6). The other end of the lubricating oil nozzle (8) is connected to the oil inlet nozzle (1), and the mounting flange (2) is arranged on the lubricating oil nozzle (8).
2. The weak-rigidity lubricating oil nozzle according to claim 1, characterized in that, The end of one oil supply rod (6) is a plug hole (4), and the end of the other oil supply rod (6) is a nozzle circle to be welded (7).
3. The weak-rigidity lubricating oil nozzle according to claim 2, wherein A limiting boss (5) is arranged on the outer side of the oil supply rod (6) provided with the plug hole (4).
4. A positioning fixture for a weakly rigid lubricating oil nozzle according to any one of claims 1 to 3, characterized in that, It includes a positioning block (13), a pressing plate (10) and a detection fixture (14). A sinking groove matching the shape of the weakly rigid lubricating oil nozzle is arranged on one surface of the positioning block (13). The weakly rigid lubricating oil nozzle is arranged in the sinking groove, and the weakly rigid lubricating oil nozzle is fixed on the positioning block (13) through a plurality of pressing plates (10). The positioning block (13) is installed on the detection fixture (14) for detecting the oil inlet nozzle (1), the nozzle circle to be welded (7) and the plug hole (4).
5. The positioning fixture for a weakly rigid lubricating oil nozzle according to claim 4, characterized in that, An auxiliary support rod (9) is installed on the mounting flange (2) for auxiliary support.
6. The positioning fixture of a weakly rigid lubricating oil nozzle according to claim 4, characterized in that The other surface of the positioning block (13) is a positioning surface (12), and a positioning pin (11) is arranged on the positioning surface (12).
7. The positioning fixture of a weakly rigid lubricating oil nozzle according to claim 4, characterized in that A plurality of pressing plates (10) are all fixedly connected by bolts.
8. The positioning fixture for a weakly rigid lubricating oil nozzle according to claim 6, characterized in that, A positioning hole matching the positioning pin (11) is arranged on the detection fixture (14), and the positioning pin (11) is arranged in the positioning hole.
9. The positioning fixture for a weakly rigid lubricating oil nozzle according to claim 4, characterized in that, An oil nozzle measuring pin (15), a nozzle circle to be welded measuring pin (16) and a plug hole measuring pin (17) are arranged on the detection fixture (14). The oil nozzle measuring pin (15), the nozzle circle to be welded measuring pin (16) and the plug hole measuring pin (17) are respectively inserted into the oil inlet nozzle (1), the nozzle circle to be welded (7) and the plug hole (4) arranged on the lubricating oil nozzle (8).
10. A detection method for a positioning fixture of a weakly rigid lubricating oil nozzle according to any one of claims 4-9, characterized in that, It includes the following steps: Use a connecting bolt to press and connect the positioning block (13) equipped with the lubricating oil nozzle to the detection fixture (14); Respectively insert the oil inlet nozzle measuring pin (15), the nozzle circle to be welded measuring pin (16) and the plug hole measuring pin (17) into the oil inlet nozzle (1), the nozzle circle to be welded (7) and the plug hole (4) of the lubricating oil nozzle (8); If the measuring pin can be inserted into the corresponding hole, it means that the blank state and the clamping state of the lubricating oil nozzle are qualified and can be processed. Otherwise, it is necessary to adjust the clamping position of the lubricating oil nozzle (8) or the blank is unqualified.