CN112113480A - Auxiliary tool and method for measuring assembly clearance of fan unit body - Google Patents
Auxiliary tool and method for measuring assembly clearance of fan unit body Download PDFInfo
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- CN112113480A CN112113480A CN202010985830.XA CN202010985830A CN112113480A CN 112113480 A CN112113480 A CN 112113480A CN 202010985830 A CN202010985830 A CN 202010985830A CN 112113480 A CN112113480 A CN 112113480A
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- casing
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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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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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a fan unit body assembly clearance measures auxiliary fixtures and measuring method, includes position sleeve, casing and double-screw bolt, third diameter section department of position sleeve is provided with screw hole I, the interior disc of position sleeve is the echelonment, is provided with the holder at the boss department of the interior disc of position sleeve, installs the rubber ring on the holder, casing center department has seted up the installation through-hole, is provided with screw hole II that sets up with screw hole I corresponding on the casing at installation through-hole edge along circumference, the position sleeve is established in the installation through-hole, twists into screw hole II and screw hole I fixed position sleeve and casing through the double-screw bolt in proper order, casing edge passes through screw and nut and links to each other with one-level cartridge receiver or second grade cartridge receiver, and fixes a bearing fitting surface on the one-level dish through the rubber ring. The measuring precision of the axial clearance and the radial clearance is improved, and the scraping and grinding faults of the fan rotor and the casing and the damage of a coating layer caused in the assembling process are avoided.
Description
Technical Field
The invention belongs to the technical field of an aircraft engine core system, and particularly relates to an auxiliary tool and a measuring method for measuring an assembly clearance of a fan unit body.
Background
The fan unit body is assembled in a single-end fixed state, the axis of the rotor is not coincident with the axis of the casing, and certain angle deviation exists; in the assembling process, errors exist in the measurement of the axial clearance and the radial clearance, and the coating is easy to damage.
Disclosure of Invention
In the assembly process, the auxiliary tool is designed for positioning, so that the axis of the rotor is coincided with the axis of the casing, the rotor can rotate freely, the radial gap and the axial gap are measured accurately, the scraping of a coating caused by measurement is avoided, the assembly quality is improved, and the scraping of the coating of an engine blade is avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
an auxiliary tool for measuring assembly clearance of a fan unit body comprises a positioning sleeve, a shell and a stud, wherein the outer circular surface of the positioning sleeve is formed by sequentially connecting a first diameter section, a second diameter section and a third diameter section into a whole, the outer diameter of the first diameter section is smaller than that of the second diameter section, the outer diameter of the first diameter section is larger than that of the third diameter section, a threaded hole I is formed in the third diameter section, the inner circular surface of the positioning sleeve is in a step shape, a retainer is arranged at a boss of the inner circular surface of the positioning sleeve, a rubber ring is installed on the retainer, an installation through hole is formed in the center of the shell, a threaded hole II corresponding to the threaded hole I is formed in the shell at the edge of the installation through hole along the circumferential direction, the positioning sleeve is arranged in the installation through hole, the outer circular surface of the third diameter section and the lower end face of the second diameter section are positioned, and the, the edge of the shell is connected with the first-stage casing or the second-stage casing through a screw and a nut, and the bearing matching surface on the first-stage disc is positioned through a rubber ring arranged in the positioning sleeve.
The casing divide into one-level casing and second grade casing two kinds, the one-level casing uses mounting hole to set gradually threaded hole III and slot hole as the symmetric center, one-level casing lower surface is seted up flutedly I, and threaded hole III is provided with the recess II with I intercommunication of recess between the one-level casing edge, the terminal surface is the arc surface about the one-level casing, and processes into the echelonment, sets up the locating hole that evenly sets up along pitch arc direction on the echelonment face down.
The second grade casing comprises horizontal plate and vertical notch cuttype board, and threaded hole III and slot hole have been seted up as the center of symmetry in proper order to the horizontal plate with the installation through-hole, and horizontal plate lower surface both ends symmetry is provided with vertical ladder version, and is provided with the gusset between vertical notch cuttype board and the horizontal plate, vertical line notch cuttype board surface is the arc surface, sets up the locating hole that evenly sets up along the pitch arc on the notch cuttype face of vertical notch cuttype board.
A measuring method of an auxiliary tool for measuring assembly gaps of fan unit bodies comprises the following steps:
step 1, after a second-stage blade, a third-stage blade and a second-stage casing are assembled, when an axial gap and a radial gap are measured, the second-stage casing is installed on a positioning hole of a second-stage shell of an auxiliary tool by using a screw and a nut, a rubber ring is installed at an installation through hole of a positioning sleeve to position a bearing matching surface on a first-stage disc, the axis of the second-stage casing is enabled to be coincident with the axis of a rotor, and the radial gap between the second-stage blade and a coating of the second-stage casing, the axial gap between the third-stage blade and the second-stage casing and the axial gap between the second-stage casing and the second-; if the radial clearance and the axial clearance are qualified, performing the step 2; if the radial clearance and the axial clearance are not qualified, calculating the size of the coating according to the measured size, turning to remove the original coating, spraying the coating again, turning to the calculated size of the coating, repeating the step for measurement until the radial clearance and the axial clearance are qualified, and performing the step 2;
step 2, after assembling the first-stage blade and the first-stage casing, installing the first-stage casing on a positioning hole of a first-stage shell of the auxiliary tool by using a screw and a nut, installing a rubber ring at an installation through hole of a positioning sleeve to position a bearing matching surface on a first-stage disc, ensuring that the axes of the first-stage casing and the second-stage casing are coincident with the axis of a rotor, and measuring a radial gap between the first-stage blade and a coating of the first-stage casing, an axial gap between the second-stage blade and the first-stage casing and an axial gap between the first-stage blade and the first-stage casing by using a grouping feeler; if the radial clearance and the axial clearance are qualified, the measurement is finished; if the radial clearance and the axial clearance are unqualified, calculating the size of the coating according to the measured size, turning to remove the original coating, spraying the coating again, turning to the calculated size of the coating, repeating the step for measurement until the radial clearance and the axial clearance are qualified, and finishing the measurement.
The invention has the beneficial effects that:
the axis of the rotor of the engine fan unit body assembled by the auxiliary tool is superposed with the axis of the casing, and the rotor can rotate freely, so that the measurement precision of an axial gap and a radial gap is improved, the scraping and grinding faults of the fan rotor and the casing and the coating damage caused in the assembly process are avoided, the assembly quality is improved, and the scraping and grinding coating faults of engine blades are avoided.
The coating damage caused by scraping and grinding faults and assembly faults reduced by the invention are about 10 times, the coating recoating cost is about 80000 times, and the cost is saved by about 800000 times per year.
Drawings
FIG. 1 is a sectional view of the positioning sleeve of the present invention assembled with a primary housing;
FIG. 2 is a top view of the alignment sleeve of the present invention assembled with the primary housing;
FIG. 3 is a schematic view of a positioning sleeve according to the present invention;
FIG. 4 is a sectional view of the positioning sleeve and secondary housing assembly of the present invention;
FIG. 5 is a top view of the positioning sleeve and secondary housing assembly of the present invention;
1-a positioning sleeve, 2-a first diameter section, 3-a second diameter section, 4-a third diameter section, 5-a retainer, 6-a rubber ring, 7-a first-stage shell, 8-a mounting through hole, 9-a second-stage shell, 10-a screw, 11-a nut, 12-a stud, 13-a threaded hole III, 14-a long hole, 15-a groove I, 16-a groove II, 17-a positioning hole, 18-a horizontal plate, 19-a vertical step plate, 20-a rib plate, 21-a first-stage casing, 22-a second-stage casing and 23-a rotor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 5, an auxiliary tool for measuring an assembly gap of a fan unit body comprises a positioning sleeve 1, a shell and a stud 12, wherein an outer circular surface of the positioning sleeve 1 is formed by sequentially connecting a first diameter section 2, a second diameter section 3 and a third diameter section 4, the outer diameter of the first diameter section 2 is smaller than that of the second diameter section 3, the outer diameter of the first diameter section 2 is larger than that of the third diameter section 4, a threaded hole i is formed at the third diameter section 4, an inner circular surface of the positioning sleeve 1 is stepped, a retainer 5 is arranged at a boss of the inner circular surface of the positioning sleeve 1, a rubber ring 6 is arranged on the retainer 5, an installation through hole 8 is formed at the center of the shell, a threaded hole ii corresponding to the threaded hole i is formed in the shell at the edge of the installation through hole 8 along the circumferential direction, the positioning sleeve 1 is arranged in the installation through hole 8, and is positioned through the outer circular surface of the third diameter section 4, and the stud 12 is screwed into the threaded hole II and the threaded hole I to fix the positioning sleeve 1 and the shell in sequence, the edge of the shell is connected with the primary casing 21 or the secondary casing 22 through a screw 10 and a nut 11, and the bearing matching surface on the primary disc is positioned through a rubber ring 6 arranged in the positioning sleeve 1.
The casing divide into one-level casing 7 and second grade casing 9 two kinds, one-level casing 7 uses mounting hole 8 to set gradually threaded hole III 13 and slot hole 14 as the center of symmetry, 7 lower surfaces of one-level casing are seted up flutedly I15, and threaded hole III 13 to be provided with the recess II 16 with I15 intercommunication of recess between 7 edges of one-level casing, the terminal surface is the arc surface about one-level casing 7, and processes into the echelonment, sets up the locating hole 17 along the even setting of pitch arc direction on the ladder surface down.
A measuring method of an auxiliary tool for measuring assembly gaps of fan unit bodies comprises the following steps:
step 1, after assembling a secondary blade, a tertiary blade and a secondary casing 22, when measuring an axial gap and a radial gap, installing the secondary casing 22 on a positioning hole 17 of a secondary shell 9 of an auxiliary tool by using a screw 10 and a nut 11, installing a rubber ring 6 at an installation through hole 8 of a positioning sleeve 1 to position a bearing matching surface on a primary disc, ensuring that the axis of the secondary casing 22 is coincident with the axis of a rotor 23, and measuring the radial gap between the secondary blade and a coating of the secondary casing 22, the axial gap from the tertiary blade to the secondary casing 22 and the axial gap from the secondary casing 22 to the secondary blade by using a grouping feeler gauge; if the radial clearance and the axial clearance are qualified, performing the step 2; if the radial clearance and the axial clearance are not qualified, calculating the size of the coating according to the measured size, turning to remove the original coating, spraying the coating again, turning to the calculated size of the coating, repeating the step for measurement until the radial clearance and the axial clearance are qualified, and performing the step 2;
step 2, after assembling the first-stage blade and the first-stage casing 21, installing the first-stage casing 21 on a positioning hole 17 of a first-stage shell 7 of the auxiliary tool by using a screw 10 and a nut 11, installing a rubber ring 6 at an installation through hole 8 of a positioning sleeve 1 to position a bearing matching surface on a first-stage disc, ensuring that the axes of the first-stage casing 21 and the second-stage casing 22 are overlapped with the axis of a rotor 23, and measuring a radial gap between the first-stage blade and a coating of the first-stage casing 21, an axial gap between the second-stage blade and the first-stage casing 21 and an axial gap between the first-stage blade and the first-stage casing 21 by using a grouping feeler; if the radial clearance and the axial clearance are qualified, the measurement is finished; if the radial clearance and the axial clearance are unqualified, calculating the size of the coating according to the measured size, turning to remove the original coating, spraying the coating again, turning to the calculated size of the coating, repeating the step for measurement until the radial clearance and the axial clearance are qualified, and finishing the measurement.
Claims (4)
1. An auxiliary tool for measuring assembly clearance of a fan unit body is characterized by comprising a positioning sleeve, a shell and a stud, wherein the outer circular surface of the positioning sleeve is formed by sequentially connecting a first diameter section, a second diameter section and a third diameter section into a whole, the outer diameter of the first diameter section is smaller than that of the second diameter section, the outer diameter of the first diameter section is larger than that of the third diameter section, a threaded hole I is formed in the third diameter section, the inner circular surface of the positioning sleeve is in a step shape, a retainer is arranged at a boss of the inner circular surface of the positioning sleeve, a rubber ring is arranged on the retainer, an installation through hole is formed in the center of the shell, a threaded hole II corresponding to the threaded hole I is formed in the shell at the edge of the installation through hole along the circumferential direction, the positioning sleeve is arranged in the installation through hole and positioned through the outer circular surface of the third diameter section and the lower end surface of the second diameter section, and the stud, the edge of the shell is connected with the first-stage casing or the second-stage casing through a screw and a nut, and the bearing matching surface on the first-stage disc is positioned through a rubber ring arranged in the positioning sleeve.
2. The auxiliary tool for measuring the assembly clearance of the fan unit body as claimed in claim 1, wherein: the casing divide into one-level casing and second grade casing two kinds, the one-level casing uses mounting hole to set gradually threaded hole III and slot hole as the symmetric center, one-level casing lower surface is seted up flutedly I, and threaded hole III is provided with the recess II with I intercommunication of recess between the one-level casing edge, the terminal surface is the arc surface about the one-level casing, and processes into the echelonment, sets up the locating hole that evenly sets up along pitch arc direction on the echelonment face down.
3. The auxiliary tool for measuring the assembly clearance of the fan unit body as claimed in claim 2, wherein: the second grade casing comprises horizontal plate and vertical notch cuttype board, and threaded hole III and slot hole have been seted up as the center of symmetry in proper order to the horizontal plate with the installation through-hole, and horizontal plate lower surface both ends symmetry is provided with vertical ladder version, and is provided with the gusset between vertical notch cuttype board and the horizontal plate, vertical line notch cuttype board surface is the arc surface, sets up the locating hole that evenly sets up along the pitch arc on the notch cuttype face of vertical notch cuttype board.
4. The measuring method of the auxiliary tool for measuring the assembly clearance of the fan unit body as claimed in claim 1, characterized by comprising the following steps:
step 1, after a second-stage blade, a third-stage blade and a second-stage casing are assembled, when an axial gap and a radial gap are measured, the second-stage casing is installed on a positioning hole of a second-stage shell of an auxiliary tool by using a screw and a nut, a rubber ring is installed at an installation through hole of a positioning sleeve to position a bearing matching surface on a first-stage disc, the axis of the second-stage casing is enabled to be coincident with the axis of a rotor, and the radial gap between the second-stage blade and a coating of the second-stage casing, the axial gap between the third-stage blade and the second-stage casing and the axial gap between the second-stage casing and the second-; if the radial clearance and the axial clearance are qualified, performing the step 2; if the radial clearance and the axial clearance are not qualified, calculating the size of the coating according to the measured size, turning to remove the original coating, spraying the coating again, turning to the calculated size of the coating, repeating the step for measurement until the radial clearance and the axial clearance are qualified, and performing the step 2;
step 2, after assembling the first-stage blade and the first-stage casing, installing the first-stage casing on a positioning hole of a first-stage shell of the auxiliary tool by using a screw and a nut, installing a rubber ring at an installation through hole of a positioning sleeve to position a bearing matching surface on a first-stage disc, ensuring that the axes of the first-stage casing and the second-stage casing are coincident with the axis of a rotor, and measuring a radial gap between the first-stage blade and a coating of the first-stage casing, an axial gap between the second-stage blade and the first-stage casing and an axial gap between the first-stage blade and the first-stage casing by using a grouping feeler; if the radial clearance and the axial clearance are qualified, the measurement is finished; if the radial clearance and the axial clearance are unqualified, calculating the size of the coating according to the measured size, turning to remove the original coating, spraying the coating again, turning to the calculated size of the coating, repeating the step for measurement until the radial clearance and the axial clearance are qualified, and finishing the measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985830.XA CN112113480B (en) | 2020-09-18 | 2020-09-18 | Auxiliary tool and method for measuring assembly clearance of fan unit body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010985830.XA CN112113480B (en) | 2020-09-18 | 2020-09-18 | Auxiliary tool and method for measuring assembly clearance of fan unit body |
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| Publication Number | Publication Date |
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| CN112113480A true CN112113480A (en) | 2020-12-22 |
| CN112113480B CN112113480B (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010985830.XA Active CN112113480B (en) | 2020-09-18 | 2020-09-18 | Auxiliary tool and method for measuring assembly clearance of fan unit body |
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2020
- 2020-09-18 CN CN202010985830.XA patent/CN112113480B/en active Active
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| CN112113480B (en) | 2021-12-14 |
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