Universal machining maintenance fixing clamp for aero-engine parts
By designing a detachable lower limit and upper limit threaded connection method, the problem of poor compatibility of existing aero-engine parts fixtures is solved, realizing universal clamping and maintenance convenience for a variety of parts.
Patent Information
- Application Number
- CN202421897223.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-08-06
AI Technical Summary
Existing aero-engine parts fixtures have poor compatibility and cannot effectively hold various parts, requiring the use of different fixtures for fixation.
A universal machining and maintenance fixture for aero-engine parts was designed. By using detachable lower and upper limit components and threaded connections, multiple parts can be clamped and fixed, improving the fixture's versatility and practicality.
It enables universal clamping of various aero-engine parts, improves the adaptability and application range of the clamp, and facilitates maintenance operations.
Smart Images
Figure CN223507001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aircraft engine maintenance technology, specifically to a universal machining and maintenance fixture for aircraft engine parts. Background Technology
[0002] An aircraft engine is a highly complex and precise thermodynamic machine. As the heart of an aircraft, it not only powers flight but also serves as a crucial driving force for the development of the aviation industry. During routine aircraft use, the engine's health status needs to be monitored, and line maintenance and troubleshooting of common malfunctions are required. When a major engine problem or malfunction occurs, external technical support is needed. In special circumstances, maintenance company personnel will promptly travel to the airline's site to support repair work. After an engine reaches a certain service life, it must be removed from the aircraft according to regulations for a comprehensive inspection and overhaul. Maintenance and repair require disassembling the engine for repair and overhaul, as many aircraft engine parts are rotating components.
[0003] When repairing aerospace parts, it is generally necessary to fix the aerospace parts with a fixture, then connect the fixture to the lathe platform for machining, and finally remove the fixture and aerospace parts together after the machining is completed.
[0004] However, due to the large number of parts, complex structure and irregular shape of aero engines, and the fact that existing fixtures can only hold the same type of parts, different fixtures are needed for different parts, resulting in poor adaptability.
[0005] Therefore, the present invention urgently needs to solve the problem of providing a universal machining and maintenance fixture for aero-engine parts that can clamp and fix multiple different engine parts by replacing the lower limit member of the lower fixture and the upper limit member of the upper fixture during use, thereby improving the versatility and practicality of the fixture. Utility Model Content
[0006] To address the aforementioned technical problems, the purpose of this utility model is to overcome the limitations of existing fixtures, which can only clamp the same type of part and require different fixtures for different parts, resulting in poor adaptability. This invention provides a universal machining and maintenance fixture for aero-engine parts, which allows for the clamping and fixing of multiple different engine parts by replacing the lower limit member of the lower fixture and the upper limit member of the upper fixture during use, thus improving the versatility and practicality of the fixture.
[0007] To achieve the above objectives, this utility model provides a universal machining and maintenance fixture for aero-engine parts, the fixture comprising: a lower fixture and an upper fixture;
[0008] A lower limiting member for limiting the part is horizontally and detachably fixed above the lower clamp. The upper clamp is coaxially and horizontally detachably mounted on the lower clamp. An upper limiting member is detachably provided on the upper clamp facing the lower limiting member, which works in conjunction with the lower limiting member and can abut against the part to clamp the part.
[0009] Preferably, the opposing surfaces of the lower clamp and the upper clamp respectively protrude to form a lower convex ring and an upper convex ring, and the lower convex ring and the upper convex ring are respectively fitted with a lower limiting member and an upper limiting member by means of threads.
[0010] Preferably, the inner walls of the lower convex ring and the upper convex ring are respectively fixedly provided with internal threads and external threads, and the inner or outer walls of the lower limiting member and the upper limiting member are respectively provided with internal threads or external threads that are adapted to the lower convex ring and the upper convex ring.
[0011] Preferably, the outer wall of the annular lower limiting member is provided with external threads, and the lower limiting member is screwed onto the inner wall of the lower convex ring. The upper end portion of the lower limiting member protrudes to form a limiting cavity for limiting the part. The outer wall of the annular upper limiting member is provided with external threads, and the upper limiting member is screwed onto the inner wall of the upper convex ring. The upper limiting member can abut against the top of the part, and the bottom end of the upper limiting member also protrudes downward to form a boss that can extend into the interior of the part and fit against the inner wall of the part.
[0012] Preferably, the clamp further includes: a base; wherein,
[0013] The lower clamp is horizontally and detachably mounted on the base by a number of second fasteners.
[0014] Preferably, the inner wall of the annular lower limiting member is provided with an internal thread, and the lower limiting member is screwed onto the outer wall of the lower convex ring. The inner wall of the annular upper limiting member is provided with an internal thread, and the upper limiting member is screwed onto the outer wall of the upper convex ring. The opposing surfaces of the lower limiting member and the upper limiting member are respectively partially recessed inward to form a splicing assembly that can accommodate the part. The end faces of the lower limiting member and the upper limiting member can respectively abut against the upper and lower grooves of the part.
[0015] Preferably, the outer wall of the annular lower limiting member is provided with external threads, and the lower limiting member is screwed onto the inner wall of the lower convex ring. The outer wall of the annular upper limiting member is provided with external threads, and the lower limiting member is screwed onto the inner wall of the upper convex ring. The upper end of the lower limiting member protrudes upward to form a limiting groove that matches the part. The bottom end of the upper limiting member, which abuts against the top of the part, protrudes downward to form a boss that can extend into the part and fit against its inner wall. The top of the upper limiting member has at least one threaded hole, and the base has a second threaded hole corresponding to the threaded through hole. The first threaded hole and the second threaded hole are connected together by a screw thread.
[0016] Preferably, the upper clamp is detachably mounted on the lower clamp by a plurality of first fasteners.
[0017] Preferably, the first fastener is a bolt; wherein,
[0018] The lower clamp has a plurality of threaded blind holes that are evenly spaced along its circumference and are adapted to each of the first fasteners. The upper clamp has through holes that are evenly spaced along its circumference and are adapted to each of the threaded blind holes and are for the first fasteners to pass through. All the first fasteners pass vertically through the corresponding through holes and are screwed into the corresponding threaded blind holes.
[0019] According to the above technical solution, the beneficial effects of the universal machining and maintenance fixture for aero-engine parts provided by this utility model in use are as follows:
[0020] This invention allows for the clamping and fixing of multiple different engine parts by replacing the lower limit component of the lower clamp and the upper limit component of the upper clamp, thus improving the versatility and practicality of the clamp.
[0021] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description
[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0023] Figure 1 This is an exploded view of the structure of the universal machining and maintenance fixture for aero-engine parts provided in Embodiment 1 when clamping part number 1;
[0024] Figure 2 yes Figure 1Structural sectional view;
[0025] Figure 3 This is an exploded view of the structure of the universal machining and maintenance fixture for aero-engine parts provided in Embodiment 2 when clamping part number 2;
[0026] Figure 4 yes Figure 3 Structural sectional view;
[0027] Figure 5 This is a schematic diagram of the upper limit plate of the universal machining and maintenance fixture for aero-engine parts provided in Embodiment 3;
[0028] Figure 6 This is a schematic diagram of the upper limit plate of the universal machining and maintenance fixture for aero-engine parts provided in Embodiment 3;
[0029] Figure 7 This is a cross-sectional view of the general-purpose machining and maintenance fixture for aero-engine parts provided in Embodiment 1 when clamping part number 3.
[0030] Explanation of reference numerals in the attached figures
[0031] 1. Base; 2. Lower clamp; 3. Upper clamp; 4. Lower limit component; 5. Upper limit component; 6. First fastener; 7. Second fastener; 8. Lower convex ring; 9. Upper convex ring; 10. Screw. Detailed Implementation
[0032] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0033] Example 1
[0034] like Figure 1-2 As shown, this utility model provides a universal machining and maintenance fixture for aero-engine parts, the fixture comprising: a lower fixture 2 and an upper fixture 3;
[0035] The lower clamp 2 is horizontally and detachably fixedly provided with a lower limiting member 4 for limiting the part. The upper clamp 3 is coaxially and horizontally detachably mounted on the lower clamp 2. The upper clamp 3 facing the lower limiting member 4 is detachably provided with an upper limiting member 5 that works with the lower limiting member 4 and can abut against the part to clamp the part.
[0036] In the above scheme, when in use, the engine parts are placed vertically on the lower limit member 4 of the lower clamp 2, and the upper clamp 3 is assembled on the lower clamp 2. The parts are clamped and fixed by the upper limit member 5 of the upper clamp 3 and the lower limit member 4 of the lower clamp 2, so that the workers can inspect and repair the parts.
[0037] In a preferred embodiment of this utility model, the opposing surfaces of the lower clamp 2 and the upper clamp 3 respectively protrude to form a lower convex ring 8 and an upper convex ring 9, and the lower convex ring 8 and the upper convex ring 9 are respectively fitted with a lower limiting member 4 and an upper limiting member 5 by means of threads.
[0038] In the above solution, the lower limiting member 4 and the upper limiting member 5 can be quickly assembled onto the corresponding lower convex ring 8 and upper convex ring 9 by means of threaded connection, which facilitates later replacement or maintenance.
[0039] In a preferred embodiment of this utility model, the inner walls of the lower convex ring 8 and the upper convex ring 9 are respectively fixedly provided with internal threads and external threads, and the inner or outer walls of the lower limiting member 4 and the upper limiting member 5 are respectively provided with internal threads or external threads that are compatible with the lower convex ring 8 and the upper convex ring 9.
[0040] like Figure 7 As shown, by simply changing the dimensions of the upper limit member 5 and the lower limit member 4, similar parts can also be clamped and fixed. This allows the entire fixture to clamp different parts, thus improving the fixture's versatility.
[0041] In the above scheme, since the inner and outer walls of the lower convex ring 8 and the upper convex ring 9 are respectively provided with internal threads and external threads, the purpose of this is to assemble different lower limit members 4 and upper limit members 5 so as to clamp and fix different parts, thereby improving the practicality and application range of the entire fixture.
[0042] In a preferred embodiment of the present invention, the upper clamp 3 is detachably mounted on the lower clamp 2 by a plurality of first fasteners 6.
[0043] In a preferred embodiment of this utility model, the first fastener 6 is a bolt; wherein,
[0044] The lower clamp 2 has a plurality of threaded blind holes that are evenly spaced along its circumference and are adapted to each of the first fasteners 6. The upper clamp 3 has through holes that are evenly spaced along its circumference and are adapted to each of the threaded blind holes and are for the first fasteners 6 to pass through. All the first fasteners 6 pass vertically through the corresponding through holes and are screwed into the corresponding threaded blind holes.
[0045] In the above scheme, when the part is placed on the lower limit member 4 of the lower clamp 2 and the upper limit member 5 of the upper clamp 3 is pressed against the top of the part, the through holes on the upper clamp 3 are aligned with all the threaded blind holes on the lower clamp 2, and all the first fasteners 6 are passed through the corresponding through holes and screwed into the threaded blind holes on the lower clamp 3, thereby completing the clamping and fixing of the part.
[0046] In a preferred embodiment of this utility model, the clamp further includes: a base 1; wherein,
[0047] The lower clamp 2 is horizontally and detachably mounted on the base 1 by a number of second fasteners 7.
[0048] In the above scheme, the second fastener 7 is a bolt or screw. The upper end of the base 1 is provided with a plurality of screw holes that are adapted to the second fastener 7 at equal intervals along its circumference. The lower clamp 2 is provided with through holes that correspond one-to-one with the threaded blind holes and allow the second fastener 7 to pass through. All the second fasteners 7 pass vertically through the corresponding through holes and are screwed into the corresponding screw holes.
[0049] In use, the lower clamp 2 is placed horizontally on the base 1, ensuring that all the through holes on the lower clamp 2 correspond one-to-one with all the screw holes on the base 1. All the fasteners 7 are then passed through the corresponding through holes and screwed into the screw holes on the base 1. The lower clamp 2 is detachably fixed to the base 1 for easy replacement.
[0050] In a preferred embodiment of this utility model, the outer wall of the annular lower limiting member 4 is provided with external threads, the lower limiting member 4 is screwed on the inner wall of the lower convex ring 8, the upper end of the lower limiting member 4 protrudes to form a limiting cavity for limiting the part, the outer wall of the annular upper limiting member 5 is provided with external threads, and the upper limiting member 5 is screwed on the inner wall of the upper convex ring 9, the upper limiting member 5 can abut against the top of the part, and the bottom end of the upper limiting member 5 also protrudes downward to form a boss that can extend into the interior of the part and fit against the inner wall of the part.
[0051] In the above scheme, the part is placed vertically within the lower limiting member 4 on the lower clamp 2, such as... Figure 1 and Figure 2As shown, the part is placed within the limiting cavity of the lower limiting member 4, and the side wall of the bottom of the part can fit against the inner wall of the limiting cavity. Therefore, the limiting cavity of the lower limiting member 4 serves to limit the part. Furthermore, the upper clamp 3 is assembled onto the lower clamp 2, and the upper limiting member 5 of the upper clamp 3 abuts against the top of the part. Since the protrusion of the upper limiting member 5 can extend into the interior of the part and fit against the inner wall of the part, the part is further clamped and fixed, thereby clamping and fixing the top of the part.
[0052] Therefore, by using the lower clamp 2, the lower limit member 4 of the lower clamp 2, the upper clamp 3, and the upper limit member 5 of the upper clamp 3 together, the parts can be clamped and fixed in all directions, so that the staff can inspect the inner and outer sides of the parts, and also avoid the parts from shifting during the inspection process.
[0053] Example 2
[0054] The difference between Example 2 and Example 1 is that:
[0055] In a preferred embodiment of this utility model, the inner wall of the annular lower limiting member 4 is provided with an internal thread, and the lower limiting member 4 is screwed onto the outer wall of the lower convex ring 8. The inner wall of the annular upper limiting member 5 is provided with an internal thread, and the upper limiting member 5 is screwed onto the outer wall of the upper convex ring 9. The opposing surfaces of the lower limiting member 4 and the upper limiting member 5 are respectively partially recessed inward to form a splicing assembly to form a receiving groove that can accommodate the part. The end faces of the lower limiting member 4 and the upper limiting member 5 can respectively abut against the upper and lower grooves of the part.
[0056] In the above scheme, when using it, such as Figure 3 and Figure 4 As shown, in use, the part is placed horizontally on the lower limiting member 4 of the lower clamp 2. The top of the lower limiting member 4 abuts against the groove at the bottom of the part, and the side wall of the lower limiting member 4 fits against the inner wall of the groove at the bottom of the part to limit its position. The bottom end of the upper limiting member 5 abuts against the groove at the top of the part. Thus, the part can be clamped between the lower limiting member 4 and the upper limiting member 5 by the cooperation of the lower limiting member 4 of the lower clamp 2 and the upper limiting member 5 of the upper clamp 3, so that the workers can inspect the inner wall and side wall of the part later. This also prevents the part from shifting during the inspection process.
[0057] Everything else is the same as in Example 1.
[0058] Example 3
[0059] The difference between Example 3 and Example 1 is that:
[0060] In a preferred embodiment of this utility model, the outer wall of the annular lower limiting member 4 is provided with external threads, and the lower limiting member 4 is screwed onto the inner wall of the lower convex ring 8. The outer wall of the annular upper limiting member 5 is provided with external threads, and the lower limiting member 4 is screwed onto the inner wall of the upper convex ring 9. The upper end of the lower limiting member 4 protrudes upward to form a limiting groove that matches the part. The bottom end of the upper limiting member 5, which abuts against the top of the part, protrudes downward to form a boss that can extend into the part and fit against its inner wall. The top of the upper limiting member 5 has at least one threaded hole. The base 1 has a second threaded hole corresponding to the threaded through hole. The first threaded hole and the second threaded hole are threaded together by a screw 10.
[0061] In the above scheme, there are two clamping methods to clamp and fix the parts during use.
[0062] The first clamping and fixing method is as follows: Figure 5 As shown, the screw 10 is vertically screwed through and onto the upper limit member 5. Then, the part is vertically placed in the limiting groove of the lower limit member 4 of the lower clamp 2, and the part is limited by the limiting groove. Then, the upper limit member 5 of the upper clamp 3 is pressed against the top of the part. The boss of the upper limit member 5 extends into the part and fits against the inner wall of the part to further limit the part. The screw 10 is rotated to make the screw 10 descend vertically until the bottom end of the screw 10 is screwed into the second screw hole on the base 1, thereby assembling the upper clamp 3 onto the lower clamp 2 and completing the clamping operation of the part.
[0063] The second clamping and fixing method is as follows: the diameter of the upper limit member 5 is smaller than the outer diameter of the part and larger than the inner diameter of the part.
[0064] In use, the parts can be directly clamped and fixed by the cooperation of the screw 10, the upper limit member 5, and the lower limit member 4. Figure 6 As shown, the specific operation method is as follows: the upper limit member 5 is placed against the top of the part, and then the screw 10 is screwed into the first threaded hole of the upper limit member 5. The screw 10 is then rotated so that the bottom part of the screw 10 is screwed into the second threaded hole on the base 1, thereby completing the clamping operation of the part.
[0065] Therefore, the upper clamp 3 can be quickly assembled onto the lower clamp 2 by the screw 1, and the lower limit member 4 of the lower clamp 2 and the upper limit member 5 of the upper clamp 3 can clamp the part so that the workers can inspect the exterior of the part later. During the inspection, the clamp can prevent the part from shifting.
[0066] Everything else is the same as in Example 1.
[0067] In summary, this utility model can clamp engine parts of different shapes by replacing the lower limit member 4 of the lower clamp 2 and the upper limit member 5 of the upper clamp 3, thereby improving the versatility and practicality of the clamp.
[0068] In summary, the universal machining and maintenance fixture for aero-engine parts provided by this utility model overcomes the problem that existing fixtures can only hold the same type of part, and different fixtures are required for different parts, resulting in poor adaptability.
[0069] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0070] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0071] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A universal machining and maintenance fixture for aero-engine parts, characterized in that, The clamp includes: a lower clamp (2) and an upper clamp (3); The lower clamp (2) is horizontally and detachably fixed above a lower limiting member (4) for limiting the part. The upper clamp (3) is coaxially and horizontally detachably mounted on the lower clamp (2). The upper clamp (3) facing the lower limiting member (4) is detachably provided with an upper limiting member (5) that works with the lower limiting member (4) and can abut against the part to clamp the part.
2. The universal machining and maintenance fixture for aero-engine parts according to claim 1, characterized in that, The opposing surfaces of the lower clamp (2) and the upper clamp (3) respectively protrude to form a lower convex ring (8) and an upper convex ring (9), and the lower convex ring (8) and the upper convex ring (9) are respectively fitted with a lower limiting member (4) and an upper limiting member (5) by means of threads.
3. The universal machining and maintenance fixture for aero-engine parts according to claim 2, characterized in that, The inner walls of the lower convex ring (8) and the upper convex ring (9) are respectively fixedly provided with internal threads and external threads. The inner or outer walls of the lower limiting member (4) and the upper limiting member (5) are respectively provided with internal threads or external threads that are compatible with the lower convex ring (8) and the upper convex ring (9).
4. The universal machining and maintenance fixture for aero-engine parts according to claim 3, characterized in that, The outer wall of the annular lower limiting member (4) is provided with external threads. The lower limiting member (4) is screwed on the inner wall of the lower convex ring (8). The upper part of the lower limiting member (4) protrudes to form a limiting cavity for limiting the part. The outer wall of the annular upper limiting member (5) is provided with external threads. The upper limiting member (5) is screwed on the inner wall of the upper convex ring (9). The upper limiting member (5) can abut against the top of the part. The bottom end of the upper limiting member (5) also protrudes downward to form a boss that can extend into the interior of the part and fit against the inner wall of the part.
5. The universal machining and maintenance fixture for aero-engine parts according to claim 4, characterized in that, The inner wall of the annular lower limiting member (4) is provided with an internal thread, and the lower limiting member (4) is screwed on the outer wall of the lower convex ring (8). The inner wall of the annular upper limiting member (5) is provided with an internal thread, and the upper limiting member (5) is screwed on the outer wall of the upper convex ring (9). The opposing surfaces of the lower limiting member (4) and the upper limiting member (5) are respectively partially recessed inward to form a splicing assembly to form a receiving groove that can accommodate the part. The end faces of the lower limiting member (4) and the upper limiting member (5) can respectively abut against the upper and lower grooves of the part.
6. The universal machining and maintenance fixture for aero-engine parts according to claim 5, characterized in that, The fixture also includes: a base (1); wherein, The lower clamp (2) is horizontally and detachably mounted on the base (1) by a number of second fasteners (7).
7. The universal machining and maintenance fixture for aero-engine parts according to claim 6, characterized in that, The outer wall of the annular lower limiting member (4) is provided with external threads, and the lower limiting member (4) is screwed on the inner wall of the lower convex ring (8). The outer wall of the annular upper limiting member (5) is provided with external threads, and the lower limiting member (4) is screwed on the inner wall of the upper convex ring (9). The upper part of the lower limiting member (4) protrudes upward to form a limiting groove that matches the part. The bottom part of the upper limiting member (5) that abuts against the top of the part protrudes downward to form a boss that can extend into the part and fit against its inner wall. The top of the upper limiting member (5) has at least one threaded hole. The base (1) has a second threaded hole corresponding to the threaded through hole. The first threaded hole and the second threaded hole are connected together by a screw (10).
8. The universal machining and maintenance fixture for aero-engine parts according to claim 1, characterized in that, The upper clamp (3) is detachably mounted on the lower clamp (2) by a number of first fasteners (6).
9. The universal machining and maintenance fixture for aero-engine parts according to claim 8, characterized in that, The first fastener (6) is a bolt; wherein, The lower clamp (2) has a number of threaded blind holes that are evenly spaced along its circumference and correspond to and fit all the first fasteners (6). The upper clamp (3) has through holes that are evenly spaced along its circumference and correspond to the threaded blind holes and allow the first fasteners (6) to pass through. All the first fasteners (6) pass vertically through the corresponding through holes and are screwed into the corresponding threaded blind holes.