Positioning clamp for hole milling, shape correcting and inspecting of fuel oil main pipe

Abstract

The invention discloses a positioning clamp for fuel oil main pipe hole milling correction inspection. The positioning clamp comprises a bottom plate; the positioning and correcting assembly is fixedly arranged on the top surface of the bottom plate; the first inspection assembly is fixedly arranged on the top surface of the bottom plate and located on the outer side of the end hole of the fuel oil main pipe; the second inspection assembly is fixedly arranged on the top surface of the bottom plate and located on the inner side of the fuel oil main pipe; the third inspection assembly is fixedly arranged on the top face of the bottom plate and located on the outer side of the fuel oil main pipe. The positioning clamp is accurate in positioning and accurate and convenient in detection, guarantees the machining quality of the fuel main pipe, and is high in machining efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, in particular to a positioning fixture for profiling inspection of milling holes of fuel main pipes. Background Art

[0002] like Figure 2 The fuel main pipe shown in the figure is an important part of the aircraft engine, and its processing quality directly affects the quality of the aircraft engine. The fuel main pipe is semicircular. After being bent into shape, the end holes at both ends and the mold holes on it need to be machined; when the fuel main pipe is placed horizontally, a number of first mold holes are opened along the axis on its top surface, and second mold holes are opened radially on its outer side. Since the fuel main pipe is thin and easy to deform, the machining accuracy of each structural feature is difficult to guarantee; after machining and forming, each structural feature needs to be tested. For this purpose, a positioning fixture for milling hole calibration inspection of the fuel main pipe is designed to ensure its processing quality and efficiency. Summary of the invention

[0003] In view of the above defects or deficiencies in the prior art, it is desired to provide a positioning fixture for the milling hole profiling inspection of the fuel main pipe, which has accurate positioning, accurate and convenient detection, ensures the processing quality of the fuel main pipe, and has high processing efficiency.

[0004] The present invention provides a positioning fixture for checking the milling hole of a fuel main pipe, comprising:

[0005] Base plate;

[0006] A positioning and shaping component is fixedly arranged on the top surface of the bottom plate and is used for positioning, fixing and shaping the fuel main pipe;

[0007] A first inspection component is fixedly arranged on the top surface of the bottom plate, located outside the end hole of the fuel main pipe, and is used to inspect the end hole of the fuel main pipe;

[0008] A second inspection component is fixedly arranged on the top surface of the bottom plate and located on the inner side of the fuel main pipe, and is used to inspect each first type hole of the fuel main pipe;

[0009] The third inspection component is fixedly arranged on the top surface of the bottom plate, located on the outside of the fuel main pipe, and is used for inspecting the second type hole of the fuel main pipe.

[0010] Furthermore, supports are symmetrically fixedly provided on both sides of the bottom surface of the base plate; and moving rods are symmetrically provided on both sides of the base plate, and one end of the moving rod is threadedly connected to the base plate.

[0011] Furthermore, the positioning and shaping assembly includes a plurality of positioning seats fixedly arranged on the top surface of the base plate, the plurality of positioning seats are distributed in an arc shape adapted to the fuel main pipe, a positioning groove matching the contour of the fuel main pipe is formed on the top of the positioning seat, a pressure block is arranged above the positioning groove, and the pressure block is fixedly connected to the positioning seat by screws.

[0012] Furthermore, the first inspection assembly includes a first inspection seat and a first inspection pin. The first inspection seat is fixedly arranged on the top surface of the base plate, and is provided with a first inspection hole coaxial with the end hole. The first inspection pin passes through the first inspection hole with a clearance fit, and one end of the first inspection pin is fixedly provided with a first inspection head with a clearance fit with the inner diameter of the end hole.

[0013] Furthermore, the second inspection assembly includes a second inspection seat and a second inspection pin. The top surface of the bottom plate is located on the inner side of the fuel main pipe and is fixedly provided with a plurality of second inspection seats corresponding to the first type holes one by one. The top end of the second inspection seat extends to the top of the corresponding first type hole, and is provided with a second inspection hole coaxial with the first type hole. The second inspection pin passes through the second inspection hole with a clearance fit, and the bottom end of the second inspection pin is fixedly provided with a second inspection head with a clearance fit with the inner diameter of the first type hole.

[0014] Furthermore, the third inspection assembly includes a third inspection seat and a third inspection pin. The third inspection seat is fixedly arranged on the top surface of the base plate, located on the outside of the second hole, and is provided with a third inspection hole coaxial with the second hole. The third inspection pin passes through the third inspection hole with a clearance fit, and one end of the third inspection pin is fixedly provided with a third inspection head with a clearance fit with the inner diameter of the third hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The positioning fixture of the present invention is provided with a positioning and shaping component, a first inspection component, a second inspection component and a third inspection component; when processing the fuel main pipe, the bent fuel main pipe is first positioned and fixed by the positioning and shaping component, and then its various structural features are machined by the machining device, and then the positioning and shaping component is used to maintain the positioning and clamping for a period of time to complete the shaping; finally, the inspection component is used to inspect the various structural features of the fuel main pipe respectively. The positioning fixture of the present application has accurate positioning, accurate and convenient detection, ensures the processing quality of the fuel main pipe, and improves the processing efficiency.

[0017] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 It is a schematic diagram of the main structure of the positioning fixture;

[0020] Figure 2 It is a schematic diagram of the top view structure of the positioning fixture;

[0021] Figure 3 It is a schematic diagram of the top view structure of the positioning seat;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning seat;

[0023] Figure 5 is a schematic cross-sectional structural diagram of a first inspection component;

[0024] Figure 6 is a schematic cross-sectional structural diagram of a second inspection component;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the third inspection component.

[0026] Numbers in the figure: 1, bottom plate; 2, positioning and calibration assembly; 3, first inspection assembly; 4, second inspection assembly; 5, third inspection assembly; 6, fuel main pipe;

[0027] 11. Support; 12. Moving rod;

[0028] 21. Positioning seat; 22. Positioning groove; 23. Pressing block; 24. Screw;

[0029] 31. First inspection seat; 32. First inspection pin; 33. First inspection hole; 34. First inspection head;

[0030] 41. second inspection seat; 42. second inspection pin; 43. second inspection hole; 44. second inspection head;

[0031] 51. Third inspection seat; 52. Third inspection pin; 53. Third inspection hole; 54. Third inspection head. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] Please refer to Figure 1 to Figure 7 The embodiment of the present invention provides a positioning fixture for checking the milling hole of a fuel main pipe, comprising:

[0035] Bottom plate 1;

[0036] The positioning and shaping component 2 is fixedly arranged on the top surface of the bottom plate 1 and is used for positioning, fixing and shaping the fuel main pipe 6;

[0037] The first inspection component 3 is fixedly arranged on the top surface of the bottom plate 1 and is located outside the end hole of the fuel main pipe 6, and is used to inspect the end hole of the fuel main pipe 6;

[0038] The second inspection assembly 4 is fixedly arranged on the top surface of the bottom plate 1 and located on the inner side of the fuel main pipe 6, and is used to inspect each first type hole of the fuel main pipe 6;

[0039] The third inspection component 5 is fixedly arranged on the top surface of the bottom plate 1 and located outside the fuel main pipe 6 , and is used for inspecting the second type hole of the fuel main pipe 6 .

[0040] In this embodiment, after the fuel main pipe 6 is bent and formed, margins are reserved at both ends, and the structural features on it are machined at this time. First, the bent fuel main pipe 6 is positioned and fixed by the positioning and shaping component 2, fixed on a horizontal plane, and its curvature is consistent with the design parameters. Then the fuel main pipe 6 and the positioning fixture are placed on the machining equipment together, first the margins at both ends of the fuel main pipe 6 are removed, and then the end holes are milled; then the first-type holes on the top are milled, and then the second-type holes on the outside are milled, and the machining of the structural features of the fuel main pipe 6 is completed.

[0041] Then remove the fuel main pipe 6 and the positioning fixture, keep the fuel main pipe 6 clamped for a period of time to remove the machining stress, and complete the calibration of the fuel main pipe 6; finally, the position of the end hole of the fuel main pipe 6 is detected by the first inspection component 3, the position of each first type hole of the fuel main pipe 6 is detected by the second inspection component 4, and the position of the second type hole of the fuel main pipe 6 is detected by the third inspection component 5. The positioning fixture of the present application realizes the milling, calibration and inspection of the fuel main pipe 6, with accurate positioning, accurate and convenient detection, ensuring the processing quality of the fuel main pipe 6 and improving the processing efficiency.

[0042] In a preferred embodiment, if Figure 1 and Figure 2As shown, supports 11 are symmetrically fixed on both sides of the bottom surface of the base plate 1 for supporting the base plate 1 ; moving rods 12 are symmetrically arranged on both sides of the base plate 1 , and one end of the moving rod 12 is threadedly connected to the base plate 1 , so as to facilitate the movement of the positioning fixture through the moving rod 12 .

[0043] In a preferred embodiment, if Figure 1 to Figure 4 As shown, the positioning and shaping assembly 2 includes a plurality of positioning seats 21 fixedly arranged on the top surface of the base plate 1, and the plurality of positioning seats 21 are distributed in an arc shape adapted to the fuel main pipe 6. A positioning groove 22 matching the contour of the fuel main pipe 6 is provided on the top of the positioning seat 21, and a pressure block 23 is provided above the positioning groove 22, and the pressure block 23 is fixedly connected to the positioning seat 21 by a screw 24.

[0044] In this embodiment, the positioning seats 21 are distributed according to the design curvature of the fuel main pipe 6, and the positioning grooves 22 match the contour of the fuel main pipe 6. After the fuel main pipe 6 is inserted into each positioning groove 22, the positioning is completed so that its curvature is consistent with the design parameters; then each pressing block 23 is fixed to the positioning seat 21 one by one by means of screws 24, and the fuel main pipe 6 is pressed and fixed, and the positioning is accurate and the fixing is firm, thereby ensuring the processing quality of the fuel main pipe 6.

[0045] In a preferred embodiment, if Figure 1 , Figure 2 and Figure 5 As shown, the first inspection component 3 includes a first inspection seat 31 and a first inspection pin 32. The first inspection seat 31 is fixedly arranged on the top surface of the base plate 1, and is provided with a first inspection hole 33 coaxial with the end hole. The first inspection pin 31 passes through the first inspection hole 33 with a clearance fit, and one end of the first inspection pin 31 is fixedly provided with a first inspection head 34 with a clearance fit with the inner diameter of the end hole.

[0046] In this embodiment, after the fuel main pipe 6 is machined and calibrated, the first inspection pin 32 is passed through the first inspection hole 33. If the first inspection pin 34 can be smoothly inserted into the corresponding end hole, the position of the end hole is qualified; otherwise, it does not meet the requirements. The operation is convenient and the detection is accurate, which ensures the processing quality of the fuel main pipe 6.

[0047] In a preferred embodiment, if Figure 1 , Figure 2 and Figure 6 As shown, the second inspection assembly 4 includes a second inspection seat 41 and a second inspection pin 42. The top surface of the bottom plate 1 is located on the inner side of the fuel main pipe 6 and is fixedly provided with a plurality of second inspection seats 41 corresponding to the first type holes one by one. The top end of the second inspection seat 41 extends to the top of the corresponding first type hole, and is provided with a second inspection hole 43 coaxial with the first type hole. The second inspection pin 42 passes through the second inspection hole 43 with a clearance fit, and the bottom end of the second inspection pin 42 is fixedly provided with a second inspection head 44 with a clearance fit with the inner diameter of the first type hole.

[0048] In this embodiment, after the fuel main pipe 6 is machined and calibrated, each second inspection pin 42 is passed through the second inspection hole 43 one by one. If the second inspection pin 44 can be smoothly inserted into the corresponding first-shaped hole, the position of the first-shaped hole is qualified; otherwise, it does not meet the requirements. The operation is convenient and the detection is accurate, which ensures the processing quality of the fuel main pipe 6.

[0049] In a preferred embodiment, if Figure 2 and Figure 7 As shown, the third inspection assembly 5 includes a third inspection seat 51 and a third inspection pin 52. The third inspection seat 51 is fixedly arranged on the top surface of the base plate 1, located on the outer side of the second hole, and is provided with a third inspection hole 53 coaxial with the second hole. The third inspection pin 52 passes through the third inspection hole 53 with a clearance fit, and one end of the third inspection pin 52 is fixedly provided with a third inspection head 54 with a clearance fit with the inner diameter of the third hole.

[0050] In this embodiment, after the fuel main pipe 6 is machined and calibrated, the third inspection pin 52 is passed through the third inspection hole 53. If the third inspection pin 54 can be smoothly inserted into the corresponding second-type hole, the position of the second-type hole is qualified; otherwise, it does not meet the requirements. The operation is convenient and the detection is accurate, which ensures the processing quality of the fuel main pipe 6.

[0051] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning fixture for checking the milling hole of a fuel main pipe, characterized in that: include: Bottom plate (1); A positioning and shaping component (2) is fixedly arranged on the top surface of the bottom plate (1) and is used for positioning, fixing and shaping the fuel main pipe (6); A first inspection component (3) is fixedly arranged on the top surface of the bottom plate (1) and is located outside the end hole of the fuel main pipe (6) and is used to inspect the end hole of the fuel main pipe (6); A second inspection component (4) is fixedly arranged on the top surface of the bottom plate (1) and located on the inner side of the fuel main pipe (6), and is used to inspect each first-type hole of the fuel main pipe (6); The third inspection component (5) is fixedly arranged on the top surface of the bottom plate (1) and is located outside the fuel main pipe (6) and is used to inspect the second type hole of the fuel main pipe (6).

2. The positioning fixture for checking the milling hole of the fuel main pipe according to claim 1 is characterized in that: Supports (11) are symmetrically fixedly arranged on both sides of the bottom surface of the base plate (1); and moving rods (12) are symmetrically arranged on both sides of the base plate (1), and one end of the moving rod (12) is threadedly connected to the base plate (1).

3. The positioning fixture for checking the milling hole of the fuel main pipe according to claim 1 is characterized in that: The positioning and shaping assembly (2) comprises a plurality of positioning seats (21) fixedly arranged on the top surface of the bottom plate (1), the plurality of positioning seats (21) being distributed in an arc shape adapted to the fuel main pipe (1), a positioning groove (22) matching the contour of the fuel main pipe (6) being provided on the top of the positioning seat (21), a pressing block (23) being provided above the positioning groove (22), and the pressing block (23) being fixedly connected to the positioning seat (21) by means of a screw (24).

4. The positioning fixture for checking the milling hole of the fuel main pipe according to claim 1 is characterized in that: The first inspection assembly (3) comprises a first inspection seat (31) and a first inspection pin (32); the first inspection seat (31) is fixedly arranged on the top surface of the base plate (1), and is provided with a first inspection hole (33) coaxial with the end hole; the first inspection pin (32) passes through the first inspection hole (33) with a clearance fit; and one end of the first inspection pin (32) is fixedly provided with a first inspection head (34) with a clearance fit with the inner diameter of the end hole.

5. The positioning fixture for checking the milling hole of the fuel main pipe according to claim 1 is characterized in that: The second inspection assembly (4) comprises a second inspection seat (41) and a second inspection pin (42). The top surface of the bottom plate (1) is located on the inner side of the fuel main pipe (6) and is fixedly provided with a plurality of second inspection seats (41) corresponding to the first type holes one by one. The top end of the second inspection seat (41) extends above the corresponding first type hole and is provided with a second inspection hole (43) coaxial with the first type hole. The second inspection pin (42) passes through the second inspection hole (43) with a clearance fit. The bottom end of the second inspection pin (42) is fixedly provided with a second inspection head (44) with a clearance fit with the inner diameter of the first type hole.

6. The positioning fixture for checking the milling hole of the fuel main pipe according to claim 1, characterized in that: The third inspection assembly (5) includes a third inspection seat (51) and a third inspection pin (52). The third inspection seat (51) is fixedly arranged on the top surface of the base plate (1) and is located on the outer side of the second hole. A third inspection hole (53) coaxial with the second hole is provided on the third inspection seat. The third inspection pin (52) passes through the third inspection hole (53) with a clearance fit. One end of the third inspection pin (52) is fixedly arranged with a third inspection head (54) with a clearance fit with the inner diameter of the third hole.

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