Aero-engine blade sealing groove position accuracy measuring tool pin convenient to observe

Abstract

The utility model relates to an aircraft engine blade sealing groove position degree measuring tool pin convenient for observation, comprising a pin body, one end of the pin body inserted into a sealing groove is provided with a pin, a transition end is arranged between the pin and the pin body, and the end face of the transition end is provided with a plurality of through holes; the end, away from the contact pin, of the contact pin body is provided with a blind hole communicated with the plurality of through holes. The beneficial effects of the utility model are that the end face of the transition end is provided with the plurality of through holes, and the pin body is also provided with the blind holes communicated with the plurality of through holes, so that a measurer can directly observe from one end of the pin body away from the pin, and the measurer can conveniently and accurately observe the measurement condition of the position pin by using the hollow structure. And program fine tuning can be smoothly carried out during machining and debugging, the operation is simple, and the machining and debugging period can be shortened. Compared with the prior art, the problem that the aircraft engine blade sealing groove position degree pin is difficult to measure and observe is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft engine blade processing, in particular to an aircraft engine blade sealing groove position measuring tool pin which is convenient for observation. Background Art

[0002] In order to ensure the sealing performance, the turbine guide vanes of aircraft engines usually have a sealing groove structure. The sealing groove and the sealing piece cooperate to form a full circle seal. The shape and position of the sealing groove are spatial curves, such as Figure 1 As shown, the industry generally uses a position pin gauge to perform dimensional inspection. The pin is judged to be qualified when it is inserted into the sealing groove. Figure 2-3 However, during debugging, when the pin is not inserted into the sealing groove, it is necessary to observe the pin offset to adjust the processing position parameters. The existing position measuring tool observes from the side, which is inconvenient to observe and the result is inaccurate, making the processing debugging difficult. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an aircraft engine blade sealing groove position measuring tool pin which is easy to observe. The hollow structure is utilized so that the measurer can conveniently and accurately observe the position pin measurement situation and smoothly perform program fine adjustment during processing and debugging.

[0004] The utility model provides a technical solution to the above-mentioned technical problems as follows: a pin for measuring the position of an aero-engine blade sealing groove that is easy to observe, comprising: a pin body, a pin being provided at one end of the pin body inserted into the sealing groove, a transition end being provided between the pin and the pin body, a plurality of through holes being provided on the end face of the transition end; a blind hole connecting the plurality of through holes being provided at one end of the pin body away from the pin.

[0005] The beneficial effects of the utility model are: multiple through holes are opened on the end face of the transition end, and blind holes connecting multiple through holes are also opened on the pin body, so that the measurer can directly observe from the end of the pin body away from the pin. The hollow structure allows the measurer to conveniently and accurately observe the position pin measurement, which is convenient for smooth program fine-tuning during processing and debugging. The operation is simple and helps to shorten the processing and debugging cycle. Compared with the existing technology, it effectively solves the problem of difficult observation of the position pin measurement of the sealing groove of the aeroengine blade, and improves the efficiency of processing and debugging.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Further, it is defined that the end of the pin body close to the pin is the measuring end, and the end of the pin body away from the pin is the hand-held end;

[0008] The transition end is a conical surface that expands and extends from the tail end of the pin toward the pin body.

[0009] The beneficial effect of adopting the above further scheme is: by setting the connection between the pin body and the pin into a conical surface, the overall rigidity is improved, the connection between the pin and the pin body is smoother and more stable, and the pin body is prevented from interfering with the blade measured on the periphery of the blade sealing groove when the pin is inserted into the sealing groove of the blade to be measured.

[0010] Furthermore, three through holes are evenly opened at an angle on the side surface of the transition end.

[0011] The beneficial effect of adopting the above-mentioned further scheme is: the through hole makes it convenient for the measurer to observe the relative position relationship between the pin and the sealing groove, provides multiple observation angles, makes positioning and adjustment more accurate and convenient, improves debugging efficiency and processing accuracy, thereby ensuring that the size and position accuracy of the sealing groove of the aero-engine blade meet the design requirements, helps to improve product quality and reliability, reduce the rate of defective products, and bring better economic benefits and market competitiveness to the enterprise.

[0012] Furthermore, the minimum distance between the through holes is not less than 1 mm.

[0013] The beneficial effect of adopting the above further solution is: ensuring the rigidity of the entire measuring tool pin and facilitating observation.

[0014] Furthermore, the minimum distance between the hole wall of the through hole and the tail end of the pin is not less than 0.5 mm.

[0015] The beneficial effect of adopting the above further solution is: ensuring the rigidity of the entire measuring tool pin and facilitating observation.

[0016] Furthermore, the pin body is a cylinder, and the pin, the transition end and the pin body are coaxially arranged.

[0017] The beneficial effect of adopting the above further solution is: by arranging the pin, the transition end and the pin body coaxially, the stability and accuracy of the pin during the insertion process are ensured, which helps to achieve precise docking and reduce deviations and errors.

[0018] Furthermore, the pin body is provided with a blind hole in a direction from the handheld end toward the measuring end, and the blind hole is coaxially arranged with the pin body.

[0019] The beneficial effect of adopting the above further solution is that it makes observation from a handheld terminal more convenient and reduces the deviation and distortion of the line of sight.

[0020] Furthermore, the distance between the end of the blind hole close to the plug pin and the tail end of the plug pin is 4-5 mm.

[0021] The beneficial effect of adopting the above further solution is that the observation is clearer and more accurate, while the overall strength of the pin is guaranteed.

[0022] Furthermore, the distance between the inner wall of the blind hole and the outer wall of the pin body is 2-3 mm.

[0023] The beneficial effect of adopting the above further solution is that the overall strength of the measuring tool pin is ensured.

[0024] Furthermore, the radius of the blind hole is not less than the maximum distance between the inner wall of the through hole and the central axis of the pin body.

[0025] The beneficial effect of adopting the above further solution is that the sight line will not be blocked when observing from the handheld end, which makes it easier for the measurer to accurately observe the position pin measurement situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the sealing groove;

[0027] Figure 2 It is a schematic diagram of the assembly of the existing measuring pin and the sealing groove;

[0028] Figure 3 It is an enlarged schematic diagram of the assembly of the existing measuring pin and the sealing groove;

[0029] Figure 4 This is a schematic diagram of the structure of a measuring pin in one embodiment of the utility model;

[0030] Figure 5 This is a front view of an embodiment of the utility model;

[0031] Figure 6 for Figure 5 A cross-sectional view of

[0032] Figure 7 It is a side view of an embodiment of the utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Sealing groove; 2. Existing measuring tool pin; 3. Pin; 4. Pin body; 5. Transition end; 6. Through hole; 7. Blind hole. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 4-7As shown, the utility model provides an aero-engine blade sealing groove position measuring tool pin that is easy to observe, and is used for the size inspection of the sealing groove 1. Since the shape and position of the sealing groove 1 are a spatial curve, the measuring tool pin is inserted into the sealing groove 1, and the pin 3 is inserted into the sealing groove 1 to judge that it is qualified. The measuring tool pin specifically includes: a pin body 4, a pin 3 is arranged at one end of the pin body 4 inserted into the sealing groove 1, a transition end 5 is also formed at the end where the pin body 4 is connected to the pin 3, and a plurality of through holes 6 are opened on the end surface of the transition end 5, and a blind hole 7 connecting the plurality of through holes 6 is also opened in the pin body 4, and the blind hole 7 is opened from the end of the pin body 4 away from the pin 3 to the end close to the pin 3.

[0037] When the pin 3 is not inserted into the sealing groove 1 during the test processing stage, it is necessary to observe the offset of the pin 3 to adjust the processing position parameters. When the existing measuring tool pin 2 is observed from the side, the existing measuring tool pin 2 is provided with a cylindrical structure handheld end with a diameter smaller than the pin body 4 at the end of the pin body 4 away from the pin 3. The obstruction of the handheld end makes it inconvenient to observe and the result is inaccurate, which makes processing and debugging difficult. Therefore, in the present measuring tool pin, a plurality of through holes 6 are provided on the end face of the transition end 5, and a blind hole 7 connecting the plurality of through holes 6 is also provided on the pin body 4, so that the measurer can directly observe from the end of the pin body 4 away from the pin 3. The hollow structure allows the measurer to conveniently and accurately observe the measurement of the position pin 3, which is convenient for the smooth fine-tuning of the program during processing and debugging. The operation is simple and helps to shorten the processing and debugging cycle. Compared with the prior art, it effectively solves the problem of difficult observation of the position pin measurement of the sealing groove of the aeroengine blade, and improves the efficiency of processing and debugging.

[0038] The end of the pin body 4 close to the pin 3 is defined as the measuring end, and the end of the pin body 4 away from the pin 3 is defined as the hand-held end. In this embodiment, the conventional measuring tool pin is redesigned, and the hand-held end of the conventional measuring tool pin adopts a cylindrical structure with a diameter smaller than the pin body 4. Figure 2-3 As shown in the figure, the measuring tool pin removes the handheld end structure of the conventional measuring pin 3 to prevent the influence on the observation of the position pin 3 measurement, and at the same time makes the entire measuring tool pin more compact and reduces the production cost. Figure 4-6As shown, the transition end 5 where the pin 3 is connected to the pin body 4 is a conical surface structure, and the conical surface is formed by expanding the diameter from the tail end of the pin 3 to the direction of the pin body 4, that is, from the tail end of the pin 3 to the direction of the pin body 4, the diameter of the circular longitudinal section of the transition end 5 gradually increases. The tail end of the pin 3 is the side where the pin 3 is connected to the transition end 5, wherein the transition end 5 can be made as one piece with the pin body 4, and the pin 3 can be formed as one piece with the pin body 4 and the transition end 5, or it can be directly inserted on the transition end 5 without being formed as one piece with the pin body 4 and the transition end 5; by setting the connection between the pin body 4 and the pin 3 as a conical surface, the overall rigidity is improved, making the connection between the pin 3 and the pin body 4 smoother and more stable, and also preventing the pin 3 body from interfering with the outer periphery of the blade sealing groove when the pin 3 is inserted into the sealing groove 1 of the blade to be measured.

[0039] like Figure 4 , Figure 7 As shown, in the preferred solution, three through holes 6 are opened at uniform angles on the side of the transition end 5; in the specific processing process, three through holes 6 can be drilled on the transition conical surface of the pin 3 and the pin body 4, and the positions of the three through holes 6 are rotationally symmetrical, that is, they are arranged at uniform angles. The through hole 6 is convenient for the measurer to observe the relative position relationship between the pin 3 and the sealing groove 1, and provides multiple observation angles, making positioning and adjustment more accurate and convenient, improving debugging efficiency and processing accuracy, thereby ensuring that the size and position accuracy of the sealing groove 1 of the aero-engine blade meet the design requirements, which helps to improve product quality and reliability, reduce the rate of defective products, and bring better economic benefits and market competitiveness to the enterprise. It can be imagined that the number of through holes 6 can be adaptively adjusted according to observation needs, and no further restrictions are made here.

[0040] Specifically, in order to ensure that the position of the pin 3 can be observed, in this embodiment, the minimum distance between the through holes 6 is set to be no less than 1mm, and the minimum distance refers to the distance between the hole walls of adjacent through holes 6; and the distance between the hole wall of the through hole 6 and the tail end of the pin 3 is also set to be no less than 0.5mm. By limiting the above dimensions, the rigidity of the entire measuring tool pin is ensured, and observation is convenient. The above parameters only show an achievable embodiment. It can be imagined that in actual application, the position of the through hole 6 can be adaptively adjusted according to the diameter of the pin body 4 to ensure that the pin 3 at the measuring end can be observed through multiple through holes 6, wherein the multiple through holes 6 cannot be spaced too far apart, otherwise it is not conducive to observation, and at the same time, they cannot be spaced too close to prevent the overall structure from being insufficiently rigid after the pin 3 is connected.

[0041] like Figure 4 , Figure 7As shown, in the preferred solution, the plug body 4 is cylindrical as a whole, a chamfer is provided at the handheld end of the plug body 4, and the plug pin 3, the transition end 5 and the plug body 4 are all arranged coaxially. By arranging the plug pin 3, the transition end 5 and the plug body 4 coaxially, the stability and accuracy of the plug pin 3 during the insertion process are ensured, which helps to achieve precise docking and reduce deviations and errors.

[0042] like Figure 6 As shown, in the preferred solution, the pin body 4 is provided with a blind hole 7 from the handheld end to the measuring end. Similarly, the blind hole 7 is arranged coaxially with the pin body 4, so that it is more convenient to observe from the handheld end, and the deviation and distortion of the line of sight are reduced. In some feasible embodiments, the distance between the end of the blind hole 7 close to the pin 3 and the tail end of the pin 3 is set to 4-5mm, and it is as close to the measuring end as possible under the premise of ensuring strength, so that the observation is clearer and more accurate, and the overall strength of the measuring tool pin is guaranteed at the same time. The diameter of the blind hole 7 should be such that the distance between the inner wall of the blind hole 7 and the outer wall of the pin body 4 is 2-3mm, that is, slightly smaller than the diameter of the pin body 4 under the premise of ensuring strength; on this basis, the radius of the blind hole 7 is not less than the maximum distance between the inner wall of the through hole 6 and the central axis of the pin body 4, so that when observing from the handheld end, the line of sight will not be blocked, and it is more convenient for the measurer to accurately observe the position measurement of the pin 3. It can be imagined that the design of the blind hole 7 is not fixed and can be adaptively adjusted according to actual needs and the size of the pin body 4.

[0043] The specific measurement process is as follows: Use the measuring tool to measure the position of the sealing groove 1. When the pin 3 is inserted into the sealing groove 1, the position is judged to be qualified; when the pin 3 is not inserted into the sealing groove 1, it is judged to be unqualified, and the processing program needs to be adjusted at this time. Observe the deviation of the measuring end from the hollow part of the pin 3 and adjust the processing program accordingly.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A needle for measuring the position of the sealing groove of an aeroengine blade that is easy to observe. It is characterized in that include: A pin body (4), wherein one end of the pin body (4) inserted into the sealing groove (1) is provided with a pin (3), a transition end (5) is provided between the pin (3) and the pin body (4), and a plurality of through holes (6) are provided on the end surface of the transition end (5); and a blind hole (7) connecting the plurality of through holes (6) is provided at one end of the pin body (4) away from the pin (3).

2. According to claim 1, a needle for measuring the position of the sealing groove of an aircraft engine blade that is easy to observe, It is characterized in that The end of the plug body (4) close to the plug pin (3) is defined as the measuring end, and the end of the plug body (4) away from the plug pin (3) is defined as the hand-held end; The transition end (5) is a conical surface that expands and extends from the tail end of the insertion pin (3) toward the insertion pin body (4).

3. According to claim 2, a needle for measuring the position of the sealing groove of an aircraft engine blade that is easy to observe, It is characterized in that The side surface of the transition end (5) is evenly provided with three through holes (6) at an angle.

4. According to claim 3, a needle for measuring the position of the sealing groove of an aircraft engine blade that is easy to observe, It is characterized in that The minimum distance between the through holes (6) is not less than 1 mm.

5. A needle for measuring the position of the sealing groove of an aeroengine blade that is easy to observe according to claim 3 or 4, It is characterized in that The minimum distance between the hole wall of the through hole (6) and the tail end of the plug pin (3) is not less than 0.5 mm.

6. According to claim 1, a needle for measuring the position of the sealing groove of an aircraft engine blade that is easy to observe, It is characterized in that The plug pin body (4) is a cylinder, and the plug pin (3), the transition end (5) and the plug pin body (4) are arranged coaxially.

7. According to claim 2, a needle for measuring the position of the sealing groove of an aircraft engine blade that is easy to observe, It is characterized in that The insertion pin body (4) is provided with a blind hole (7) in a direction from the handheld end toward the measuring end, and the blind hole (7) is arranged coaxially with the insertion pin body (4).

8. According to claim 7, a needle for measuring the position of the sealing groove of an aircraft engine blade that is easy to observe, It is characterized in that The distance between the end of the blind hole (7) close to the plug pin (3) and the tail end of the plug pin (3) is 4-5 mm.

9. A needle for measuring the position of the sealing groove of an aero-engine blade that is easy to observe according to claim 7 or 8, It is characterized in that The distance between the inner wall of the blind hole (7) and the outer wall of the pin body (4) is 2-3 mm.

10. The needle of the aeroengine blade sealing groove position measuring tool for easy observation according to claim 1, It is characterized in that The radius of the blind hole (7) is not less than the maximum distance between the inner wall of the through hole (6) and the central axis of the pin body (4).

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