CN110953949A - Method for controlling assembly clearance of flow distribution ring of intermediate case of aircraft engine - Google Patents
Method for controlling assembly clearance of flow distribution ring of intermediate case of aircraft engine Download PDFInfo
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- CN110953949A CN110953949A CN201911138163.5A CN201911138163A CN110953949A CN 110953949 A CN110953949 A CN 110953949A CN 201911138163 A CN201911138163 A CN 201911138163A CN 110953949 A CN110953949 A CN 110953949A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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Abstract
The invention discloses a method for controlling an assembly gap of a flow distribution ring of an intermediate case of an aeroengine, which comprises the following steps: the assembly clearance of the shunt ring is converted into independent detection of the matching surfaces of the shunt ring and the intermediate case, the size of the matching surface of the special tool for detecting the shunt ring and the special tool for detecting the intermediate case is set to be 0.05, the two parts are detected through the special tool for detecting the shunt ring and the special tool for detecting the intermediate case, and when the two comprehensive gauges detect that the two parts are qualified, the time clearance for assembling the two parts is larger than 0. The invention can effectively detect whether the size of the part is qualified or not, control the assembly quality of the splitter ring and quantize the assembly condition, thereby effectively improving the assembly quality of the splitter ring, prolonging the service life of the engine and saving the test cost. The invention can effectively quantify the quality state of the parts, simultaneously control the problems before the assembly work and reduce the waste of cost.
Description
Technical Field
The invention relates to the field of aero-engines, and particularly provides a method for controlling an assembly gap of a flow distribution ring of an intermediate case of an aero-engine.
Background
The spot welding point of the shunt ring of the intermediate case of the existing aeroengine often has crack failure after test run, the reason is that the fitting surface of two parts forming the assembly component interferes to cause overlarge assembly stress, but the structure of the assembly position of the parts is extremely complex, and the space is too small, so that the gap after assembly cannot be directly detected to ensure that the assembly stress does not exist during the assembly of the parts. At present, the structure only exists in domestic aero-engines, and the conventional control method only judges the assembly clearance for workers according to experience and force used during assembly, cannot quantify and cannot independently judge the quality of a matching part.
Disclosure of Invention
The invention aims to provide a method for controlling the assembly clearance of the shunting ring of the intermediate case of an aeroengine, which solves the problem of overlarge assembly stress of the shunting ring of the intermediate case of the aeroengine, thereby solving the problem of spot welding point cracks of the shunting ring, realizing the stress-free assembly of the shunting ring of the intermediate case of the aeroengine, greatly improving the assembly quality of the shunting ring and prolonging the service life of the shunting ring.
The setting method of the control size comprises the following steps: if the wall thickness of the overlap edge of the intermediary case is 1.6mm, and the minimum wall thickness after final repair is required to be 0.9mm, the repair polishing amount is 0.7mm, the profile of the inner surface of the shunting ring is 1.5, the one-way tolerance band is 0.75, if the theoretical dimensions of the overlap edge of the intermediary case and the inner surface of the shunting ring are consistent, the interference between the two parts is 0.05mm in the limit fit state, therefore, the size of the fit surface of the two detection tools can be set to be 0.05, the two comprehensive gauges can be ensured to be qualified when detecting the two parts, and the gap is larger than 0 when assembling the two parts.
The technical scheme of the invention is as follows: a method for controlling an assembly gap of a flow distribution ring of an intermediate case of an aero-engine comprises the following steps: the assembly clearance of the shunt ring is converted into independent detection of the matching surfaces of the shunt ring and the intermediate case, the size of the matching surface of the special tool for detecting the shunt ring and the special tool for detecting the intermediate case is set to be 0.05, the two parts are detected through the special tool for detecting the shunt ring and the special tool for detecting the intermediate case, and when the two comprehensive gauges detect that the two parts are qualified, the time clearance for assembling the two parts is larger than 0.
Detect the special frock of splitter ring includes: a bottom plate 101, a support foot 102, an inspection measurement block 103, a simulation assembly block 104 and a process ball pin 105; the bottom surface of the bottom plate 101 is symmetrically provided with 4 support legs 102 for stabilizing the tool, the upper surface of the bottom plate 101 is symmetrically provided with 2 simulation assembling blocks 104, and the symmetric center of the 2 simulation assembling blocks 104 is provided with a detection measuring block 103 and a process ball pin 105.
Detect special frock of intermediary machine casket and include: the reference adopts a part of tooling and a detection part of tooling;
part frock is taken to benchmark includes: the device comprises a reference circular plate 201, a handle I202, a reference conversion supporting leg 203 and an inspection measuring block I204; a weight reduction groove 201a is formed in the reference circular plate 201, 3 reference conversion supporting legs 203 are uniformly distributed on the bottom surface of the reference circular plate 201 and fixed through bolts, and 2 lifting handles I202 and inspection measuring blocks I204 are symmetrically distributed on the upper surface of the reference circular plate 201;
the detection part tool comprises: the device comprises an auxiliary detection measuring block 205, a handle II 206, a tool detection reference ball 207, a detection measuring block II 208 and a simulation assembling module 209; the center of symmetry of the simulation assembly module 209 is provided with a tool detection reference ball 207 and a detection measurement block II 208, two sides of the simulation assembly module 209 are symmetrically provided with 2 handles II 206 and 2 auxiliary detection measurement blocks 205, and the tool detection reference ball 207 is used for determining a tool reference zero point and detecting whether the tool is qualified.
The invention has the following beneficial effects:
the invention can effectively detect whether the size of the part is qualified or not, control the assembly quality of the splitter ring and quantize the assembly condition, thereby effectively improving the assembly quality of the splitter ring, prolonging the service life of the engine and saving the test cost. The invention can effectively quantify the quality state of the parts, simultaneously control the problems before the assembly work and reduce the waste of cost.
Drawings
FIG. 1 is a three-dimensional schematic view of a special tool for detecting a shunt ring according to the present invention;
FIG. 2 is a front view of the special fixture for detecting a shunt ring in the present invention;
FIG. 3 is a schematic view of the tool dedicated for detecting the shunt ring according to the present invention;
FIG. 4 is a three-dimensional schematic view of a tool dedicated to detecting an intermediate casing according to the present invention;
FIG. 5 is a three-dimensional view of a reference-sampling part of the tool dedicated for detecting an intermediate casing according to the present invention;
FIG. 6 is a three-dimensional view of a detection part of the tool dedicated for detecting an intermediate casing according to the present invention;
FIG. 7 is a schematic diagram illustrating the use of the tool dedicated for detecting an intermediate casing according to the present invention;
in the figure: 101. a base plate; 102. a support leg; 103. checking the measuring block; 104. simulating an assembly block; 105. a process ball pin; 201. a reference circular plate; 201a, a weight-reducing slot; 202. a handle I; 203. a reference conversion leg; 204. detecting a measuring block I; 205. auxiliary detection measuring blocks; 206. a handle II; 207. detecting a reference ball by a tool; 208. detecting a measuring block II; 209. and simulating an assembly module.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1 to 7, a method for controlling an assembly gap of a flow divider ring of an intermediate casing of an aircraft engine includes: the assembly clearance of the shunt ring is converted into independent detection of the matching surfaces of the shunt ring and the intermediate case, the size of the matching surface of the special tool for detecting the shunt ring and the special tool for detecting the intermediate case is set to be 0.05, the two parts are detected through the special tool for detecting the shunt ring and the special tool for detecting the intermediate case, and when the two comprehensive gauges detect that the two parts are qualified, the time clearance for assembling the two parts is larger than 0.
Detect special frock of splitter ring and include: a bottom plate 101, a support foot 102, an inspection measurement block 103, a simulation assembly block 104 and a process ball pin 105; the bottom surface of the bottom plate 101 is symmetrically provided with 4 supporting feet 102 for stabilizing the tool, the upper surface of the bottom plate 101 is symmetrically provided with 2 simulation assembling blocks 104, and the symmetric centers of the 2 simulation assembling blocks 104 are provided with a detection measuring block 103 and a process ball pin 105.
The bottom plate 101 is a tool substrate and used for fixing other parts;
the support legs 102 are used for supporting the tool and are positioned at four corners of the bottom plate;
the detection measuring block 103 is a detection measuring block for finally detecting whether the shunt ring is assembled in place or not, and reflects the assembly condition of the shunt ring to a gap between the bottom surface of the shunt ring and the detection measuring block;
the simulation assembly block 104 is a simulation intermediary casing lapping edge structure and is used for simulating the condition that the shunt ring is assembled on the intermediary casing;
the process ball pin 105 is a detection reference when the measuring tool is detected and is used for determining a tool reference coordinate system.
As shown in fig. 3, in the actual use process, the shunt ring parts are assembled on the special tool for detecting the shunt ring, the parts are moved back and forth left and right to minimize the distance between the bottom surface of the part and the inspection measuring block 103, then a vernier caliper is used for detecting the gap between the bottom surface of the mounting edge of the shunt ring and the inspection measuring block 103, if the gap is smaller than 0.5mm, the part is qualified, and if the gap is larger than or equal to 0.5mm, the part is unqualified.
Detect special frock of intermediary machine casket and include: the reference adopts a part of tooling and a detection part of tooling;
the benchmark is adopted some frocks and is included: the device comprises a reference circular plate 201, a handle I202, a reference conversion supporting leg 203 and an inspection measuring block I204; a weight reduction groove 201a is formed in the reference circular plate 201, 3 reference conversion support legs 203 are uniformly distributed on the bottom surface of the reference circular plate 201 and fixed through bolts, and 2 handles I202 and inspection measuring blocks I204 are symmetrically distributed on the upper surface of the reference circular plate 201;
the handle I202 is used as a reference, and a part of tools are taken, so that the tools are convenient to take;
the reference conversion supporting leg 203 converts the detection reference of the intermediate casing blank to the inspection measuring block I204 of the detection tool and plays a role of supporting the tool;
the detection measuring block I204 is a comparison reference of a detection part of the tool, and the size from the measuring surface to the bottom surface of the reference conversion supporting leg 203 is a precise size;
the detection part frock includes: the device comprises an auxiliary detection measuring block 205, a handle II 206, a tool detection reference ball 207, a detection measuring block II 208 and a simulation assembling module 209; a tool detection reference ball 207 and an inspection measuring block II 208 are arranged on the symmetrical center of the simulation assembly module 209, 2 handles II 206 and 2 auxiliary inspection measuring blocks 205 are symmetrically distributed on two sides of the simulation assembly module 209, the tool detection reference ball 207 is used for determining a tool reference zero point, and whether the tool is qualified is detected.
The auxiliary detection measuring block 205 is convenient for workers to quickly judge the size state of the part, is convenient to polish and use, and can preliminarily judge whether the part is qualified or not through the distance between the lower surface of the detection measuring block II 208 and the front edge of the splitter ring;
the handle II 206 is a handle of the detection part tool, so that the tool is convenient to take;
the tool detection reference ball 207 is an assembly and detection reference of a detection part of the tool, and a coordinate system of the whole tool can be determined through a detection ball center;
the inspection and measurement block II 208 is a comparison reference of a detection part of the tool, the upper surface of the inspection and measurement block II and the inner profile of the simulation assembly module have a precise relative size relationship and are used for being compared with the inspection and measurement block I204, if the two are interfered, the part is judged to be unqualified, and if the two are not interfered, the part is qualified;
the simulation assembly module 209 is a simulated shunt ring part, the size of the inner profile of the simulated assembly module is consistent with that of the inner profile of the shunt ring, and the size of the real profile of the lap joint edge of the shunt ring can be converted into the size of a tool measurement reference for comparing with a reference sampling part of tools.
As shown in fig. 7, when in use, firstly, a part of reference sampling tools are placed on the inner ring of the intermediary casing, the bottom surfaces of the 3 reference conversion support legs 203 are ensured to be contacted with the end surface of the inner ring of the part without tilting, then, a detection part of the tools are inserted into the assembly position of the shunt ring, the tools are allowed to be moved in a left-right mode to ensure that the degree of inserting the detection part of the tools into the intermediary casing is maximum, then, the reference sampling tools are rotated to enable the inspection measurement block I204 to be contacted with the inspection measurement block II 208, if the inspection measurement block I204 is not interfered with the inspection measurement block II 208, the part is qualified, and if the inspection measurement block I.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. A method for controlling an assembly gap of a flow distribution ring of an intermediate case of an aeroengine is characterized in that the method for controlling the assembly gap of the flow distribution ring of the intermediate case of the aeroengine comprises the following steps: the assembly clearance of the shunt ring is converted into independent detection of the matching surfaces of the shunt ring and the intermediate case, the size of the matching surface of the special tool for detecting the shunt ring and the special tool for detecting the intermediate case is set to be 0.05, the two parts are detected through the special tool for detecting the shunt ring and the special tool for detecting the intermediate case, and when the two comprehensive gauges detect that the two parts are qualified, the time clearance for assembling the two parts is larger than 0.
2. The method for controlling the assembly clearance of the flow divider ring of the intermediate case of the aircraft engine as claimed in claim 1, wherein said tooling dedicated to detecting the flow divider ring comprises: the device comprises a bottom plate (101), support legs (102), a test measurement block (103), a simulation assembly block (104) and a process ball pin (105); the bottom surface of the bottom plate (101) is symmetrically provided with 4 supporting legs (102), the upper surface of the bottom plate (101) is symmetrically provided with 2 simulation assembling blocks (104), and the symmetric center of the 2 simulation assembling blocks (104) is provided with a detection measuring block (103) and a process ball pin (105).
3. The method for controlling the assembly clearance of the flow divider ring of the intermediate case of the aircraft engine as claimed in claim 1, wherein said tool dedicated to detecting the intermediate case comprises: the reference adopts a part of tooling and a detection part of tooling;
part frock is taken to benchmark includes: the device comprises a reference circular plate (201), a handle I (202), a reference conversion supporting leg (203) and an inspection measuring block I (204); a weight reduction groove (201a) is formed in the reference circular plate (201), 3 reference conversion supporting legs (203) are uniformly distributed on the bottom surface of the reference circular plate (201), and 2 lifting handles I (202) and inspection measuring blocks I (204) are symmetrically distributed on the upper surface of the reference circular plate (201);
the detection part tool comprises: the device comprises an auxiliary detection measuring block (205), a handle II (206), a tool detection reference ball (207), a detection measuring block II (208) and a simulation assembly module (209); the simulation assembly module (209) symmetry center is last to be provided with frock detection benchmark ball (207) and inspection measurement block II (208), simulation assembly module (209) bilateral symmetry distributes and has 2 handles II (206) and 2 supplementary inspection measurement block (205).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911138163.5A CN110953949B (en) | 2019-11-20 | 2019-11-20 | Method for controlling assembly clearance of flow distribution ring of intermediate case of aircraft engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911138163.5A CN110953949B (en) | 2019-11-20 | 2019-11-20 | Method for controlling assembly clearance of flow distribution ring of intermediate case of aircraft engine |
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| CN110953949A true CN110953949A (en) | 2020-04-03 |
| CN110953949B CN110953949B (en) | 2021-03-19 |
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Cited By (2)
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| CN113074386A (en) * | 2021-03-17 | 2021-07-06 | 中国航发动力股份有限公司 | Auxiliary device for installing heat shield and heat shield installation method |
| CN114749907A (en) * | 2022-06-16 | 2022-07-15 | 成都飞机工业（集团）有限责任公司 | Device and method for pre-checking involution state of aircraft engine and radiator |
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Cited By (2)
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| CN110953949B (en) | 2021-03-19 |
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