CN110823072B - Turbofan rectifier casing detection method and device - Google Patents
Turbofan rectifier casing detection method and device Download PDFInfo
- Publication number
- CN110823072B CN110823072B CN201911135700.0A CN201911135700A CN110823072B CN 110823072 B CN110823072 B CN 110823072B CN 201911135700 A CN201911135700 A CN 201911135700A CN 110823072 B CN110823072 B CN 110823072B
- Authority
- CN
- China
- Prior art keywords
- blade
- measuring arm
- main body
- turbofan
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a detection method and a detection device for a turbofan rectifier casing, wherein the device comprises a main body, two cylindrical pins and a measuring arm, wherein the lower end of the main body is provided with a binding surface for being bound with the outer ring plane of the turbofan rectifier casing; the cylindrical pin is connected to the lower end of the main body, and the lower end face of the cylindrical pin is positioned below the binding face of the lower end of the main body; one end of the measuring arm is detachably connected to the main body, the other end of the measuring arm is suspended, a linear measuring blade is arranged on the measuring arm, and the measuring arm is located between two cylindrical pin connecting lines. The device disclosed by the invention is simple in structure, is a high-precision and rapid detection method for the torsion angle of the blade, and can realize high-precision and rapid detection of the torsion angle of the blade when a part is processed by using the method, so that the integral deflection of the blade during assembly is prevented.
Description
Technical Field
The invention relates to a part assembly measurement technology, in particular to a method for blade assembly and torsion angle detection of a rectifier casing blade.
Background
The eighth-stage rectifier is one of important parts of a static part of a high-pressure compressor casing in a medium-thrust engine and is a typical large-sized thin-wall high-precision part. The blades of the eighth-stage rectifier are assembled in a shell in a cantilever state, and the number of the blades of the eighth-stage rectifier is 100. According to design requirements, the blade tip end surface of the rectifier blade needs to be machined, has angle, surface roughness and size requirements, cannot be finished by traditional milling, turning and other methods, and cannot realize blade deflection angle measurement control by using the turning and milling technology according to the shape and the state of a part.
The machining of the part mainly has the following difficulties: the part blade is cantilever type, the blade is thin and fine, the deformation and the breakage are easy, the requirements on the processing quality, the profile angle and the jumping of the surface of the blade tip of the blade are high, and the detection on the processed blade tip is difficult. Because the tip of the rectifier blade is tiny, a certain distance exists between the blades, the number of the blades is odd, the measurement area is insufficient, and great difficulty is brought to measurement.
Disclosure of Invention
The invention aims to provide various detecting methods and devices for a turbofan rectifier casing, which can detect the blade torsion angle quickly and accurately and have simple detecting devices.
The technical scheme adopted by the invention is as follows:
a detecting device for a casing of a turbofan rectifier comprises,
the lower end of the main body is provided with a joint surface which is used for being jointed with the outer ring plane of the turbofan rectifier casing;
the lower end surfaces of the cylindrical pins are positioned below the binding surface at the lower end of the main body;
the measuring arm is detachably connected to the main body at one end, the other end of the measuring arm is suspended, a linear measuring blade is arranged on the measuring arm, and the measuring arm is located between two cylindrical pin connecting lines.
The main part includes the crossbeam, and the crossbeam both ends are L shape support arm, and the horizontal limit and the cylindric lock of L shape support arm can be dismantled and be connected.
The cylindrical pin and the measuring arm are located on the same side of the main body.
The crossbeam is connected with one end screw of measuring arm, and is provided with a plurality of screw holes along the length direction of crossbeam on the crossbeam.
The linear measuring blade on the measuring arm forms an included angle with the axis of the cylindrical pin.
A detection method adopting the turbofan rectifier casing detection device is characterized in that a binding surface at the lower end of a main body is bound with an outer ring plane of the turbofan rectifier casing during measurement, the main body is moved to enable cylindrical surfaces of two cylindrical pins to be tangent to an inner ring plane of the turbofan rectifier casing, when a linear measuring blade of a measuring arm is tangent to two edges in the width direction of a blade in the inner ring of the turbofan rectifier casing, a clearance between the linear measuring blade and a blade profile is measured by a feeler gauge, and when the clearance value is smaller than or equal to a clearance value corresponding to a specified torsion angle of the blade, the clearance is judged to be qualified.
The detection method also comprises the step of assembling the blade before detection, and when the blade is installed in the inner annular groove of the turbofan rectifier casing, the gap between the blades is ensured to be within 0.1 mm.
The detection method further comprises the steps of cleaning the turbofan rectifier casing before blade detection and cleaning after detection.
Compared with the prior art, the invention has the advantages of simple operation, convenient measurement, stability and reliability, and the processing deformation of parts is greatly improved. After the method is used, the qualification rate of parts is improved, the problem that the torsional angle of the blade is difficult to measure is thoroughly solved, and the production efficiency is improved; the product quality is improved, and the requirement of assembly of the general assembly drawing is met.
Drawings
FIG. 1 is a schematic view of a detection apparatus according to the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic view of the mounting of the blades on the inner ring of the turbofan fairing casing;
FIG. 4 is a schematic view of the gap measurement when the measuring arm is tangent to the blade (corresponding to section W-W in FIG. 5);
FIG. 5 is a schematic cross-sectional view of a blade.
Detailed Description
The technical solution of the present invention is further explained below with reference to the accompanying drawings, but the claimed protection scope is not limited to the above.
As shown in fig. 3, in order to solve the problem that the blade torsion angle is difficult to measure after the blade is assembled, a lot of existing data are inquired, a process test is carried out, and finally, the torsion angle measurement of the blade in the turbofan rectifier case is determined to be converted into the gap measurement between two edges in the width direction of the blade and a straight line, wherein the straight line is tangent to the two edges in the width direction of the blade, so that the problem of measuring the blade torsion angle after the blade is assembled is thoroughly solved, the measurement quality is greatly improved, the productivity is improved, the product quality is improved, and the requirement of a general assembly drawing is met.
As shown in fig. 1 and 2, the detection device used for detection includes:
the two cylindrical pins 2 are connected to the horizontal edge of the L-shaped support arm of the main body 1, and the lower end faces of the cylindrical pins 2 are positioned below the lower end binding face of the main body 1;
the measuring arm 3, the one end of measuring arm 3 can be dismantled and connect on main part 1, and the other end is unsettled, has a linear measuring sword on the measuring arm 3, and measuring arm 3 is located between two cylindric lock 2 lines.
Wherein the cylindrical pin 2 and the measuring arm 3 are located on the same side of the body 1 (e.g. on the same side of the centre of gravity of the body 1) as shown in figure 2. Because when detecting, measuring arm 3 is tangent with the blade, and main part 1 is placed on turbofan rectifier machine casket outer loop plane, in order to avoid measuring arm 3's dead weight to exert external force to the blade and cause the blade to warp, influence the precision of measuring the torsion angle, consequently, set up cylindric lock 2 in measuring arm 3's homonymy position, can regard as the strong point, act on the interior anchor ring of turbofan rectifier machine casket, when main part 1's dead weight is greater than measuring arm 3's dead weight, measuring arm 3 can not overturn with the contact point of cylindric lock 2 with the interior anchor ring of turbofan rectifier machine casket. The crossbeam is connected with the one end screw of measuring arm 3, and is provided with a plurality of screw holes along the length direction of crossbeam on the crossbeam, when the relative position of measuring arm 3 and main part 1 need be adjusted, can adopt different screw holes to fix. The linear measuring blade on the measuring arm 3 forms an included angle with the axis of the cylindrical pin 2, and in this embodiment, the axis of the cylindrical pin 3 is parallel to the axis of the turbofan rectifier casing, so the linear measuring blade must form an included angle with the axis of the cylindrical pin 2 when the blade torsion angle is detected.
When the blade of the turbofan rectifier casing is detected, the following procedures are carried out:
1) the turbofan rectifier case is clean.
And (3) drying the turbofan rectifier case after washing, and keeping the surface of the turbofan rectifier case dry and clean without sundries, attachment and fouling.
2) And (6) assembling the blade.
As shown in figures 3 and 5, the blades are installed in the ring groove of the turbofan rectifier casing, and the blade clearance is ensured to be within 0.1 mm.
3) And (4) measuring the blade.
The method comprises the steps of placing a main body 1 of a detection device on an outer ring plane of a casing of the turbofan rectifier, ensuring that a joint surface at the lower end of the main body 1 is jointed with the outer ring plane, ensuring that an inner ring surface (inner hole) of the casing of the turbofan rectifier is tangent to two cylindrical pins 2 of the detection device (namely the surfaces of the cylindrical pins 2 are tangent to the surface of the inner ring of the casing), as shown in fig. 4, contacting a linear measuring blade with two parts a and b of a blade (namely the linear measuring blade is tangent to two edges in the width direction of the blade), and measuring whether a gap between the two parts a and b is larger than a calculated size by using a feeler gauge (when a torsion angle meets a requirement, a corresponding gap value is fixed), so that whether the torsion angle A of the.
4) And (6) washing.
And the assembled turbofan rectifier is dried after being washed, and the surface is kept dry, clean, free of impurities and attached with dirt.
The invention has simple operation, convenient measurement, stability and reliability. The whole part machining deformation is improved to a great extent, the part qualification rate is improved, the problem that the torsional angle of the blade is difficult to measure is thoroughly solved, the production efficiency is improved, the product quality is improved, and the requirement of assembly drawing assembly is met. When the method is used for processing parts, the high-precision and quick blade torsion angle detection of the parts can be realized, and the integral deflection of the blade assembly is prevented.
Claims (3)
1. A detection method of a turbofan rectifier casing is characterized by comprising the following steps: the detection device adopted comprises a detection device and a detection device,
the lower end of the main body (1) is provided with a binding surface used for being bound with the outer ring plane of the turbofan rectifier casing;
the two cylindrical pins (2) are connected to the lower end of the main body (1), and the lower end faces of the cylindrical pins (2) are located below the lower end binding face of the main body (1);
one end of the measuring arm (3) is detachably connected to the main body (1), the other end of the measuring arm is suspended in the air, a linear measuring blade is arranged on the measuring arm (3), and the measuring arm (3) is located between connecting lines of the two cylindrical pins (2);
the main body (1) comprises a cross beam, two ends of the cross beam are L-shaped support arms, and the horizontal edges of the L-shaped support arms are detachably connected with the cylindrical pin (2);
the cylindrical pin (2) and the measuring arm (3) are positioned on the same side of the main body (1);
the cross beam is connected with one end of the measuring arm (3) through a screw, and a plurality of screw holes are formed in the cross beam along the length direction of the cross beam;
an included angle is formed between the linear measuring blade on the measuring arm (3) and the axis of the cylindrical pin (2);
when the measuring arm is used for measuring the clearance between the linear measuring blade and the blade profile, the clearance is judged to be qualified when the clearance value is smaller than or equal to the clearance value corresponding to the specified torsion angle of the blade.
2. The detection method according to claim 1, characterized in that: the method also comprises the assembly before blade detection, and when the blade is arranged in an annular groove in the turbofan rectifier casing, the blade gap is ensured to be within 0.1 mm.
3. The detection method according to claim 1, characterized in that: the method also comprises the steps of cleaning the turbofan rectifier casing before blade detection and cleaning after detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135700.0A CN110823072B (en) | 2019-11-19 | 2019-11-19 | Turbofan rectifier casing detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135700.0A CN110823072B (en) | 2019-11-19 | 2019-11-19 | Turbofan rectifier casing detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110823072A CN110823072A (en) | 2020-02-21 |
| CN110823072B true CN110823072B (en) | 2021-01-22 |
Family
ID=69556945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911135700.0A Active CN110823072B (en) | 2019-11-19 | 2019-11-19 | Turbofan rectifier casing detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110823072B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197671A (en) * | 2020-09-29 | 2021-01-08 | 中国航发动力股份有限公司 | Device and method for detecting distance from blade fixed point to casing end face |
| CN112179241A (en) * | 2020-09-29 | 2021-01-05 | 中国航发动力股份有限公司 | Auxiliary measuring device and method for width of inner ring flow channel and outer ring flow channel between blades of machine box assembly |
| CN112212768B (en) * | 2020-09-29 | 2022-08-02 | 中国航发动力股份有限公司 | Auxiliary measuring device and method for chord tangent angle of blade of stator component of casing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261888A (en) * | 1995-02-28 | 1996-10-11 | Leica Instr Gmbh | Blade holder accepting microtome blade |
| CN102625901A (en) * | 2009-09-16 | 2012-08-01 | 普睿司曼股份公司 | Monitoring method and system for detecting the torsion along a cable provided with identification tags |
| CN109323643A (en) * | 2018-09-27 | 2019-02-12 | 中国航空制造技术研究院 | Integral blade disk is electrolysed blade profile device for fast detecting and method after roughing |
| CN109668500A (en) * | 2018-11-28 | 2019-04-23 | 惠阳航空螺旋桨有限责任公司 | A kind of blade torsional angle measuring tool |
| CN110081799A (en) * | 2019-05-14 | 2019-08-02 | 中国航发沈阳发动机研究所 | A kind of Thin-Wall Outer Casing tip clearance measuring device |
| CN110260836A (en) * | 2019-07-09 | 2019-09-20 | 中国航发哈尔滨东安发动机有限公司 | A kind of method at rapid survey small-sized blade profile bending angle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8854626B2 (en) * | 2012-07-20 | 2014-10-07 | Prime Photonics, Lc | Rotating stall detection using optical measurement of blade untwist |
-
2019
- 2019-11-19 CN CN201911135700.0A patent/CN110823072B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261888A (en) * | 1995-02-28 | 1996-10-11 | Leica Instr Gmbh | Blade holder accepting microtome blade |
| CN102625901A (en) * | 2009-09-16 | 2012-08-01 | 普睿司曼股份公司 | Monitoring method and system for detecting the torsion along a cable provided with identification tags |
| CN109323643A (en) * | 2018-09-27 | 2019-02-12 | 中国航空制造技术研究院 | Integral blade disk is electrolysed blade profile device for fast detecting and method after roughing |
| CN109668500A (en) * | 2018-11-28 | 2019-04-23 | 惠阳航空螺旋桨有限责任公司 | A kind of blade torsional angle measuring tool |
| CN110081799A (en) * | 2019-05-14 | 2019-08-02 | 中国航发沈阳发动机研究所 | A kind of Thin-Wall Outer Casing tip clearance measuring device |
| CN110260836A (en) * | 2019-07-09 | 2019-09-20 | 中国航发哈尔滨东安发动机有限公司 | A kind of method at rapid survey small-sized blade profile bending angle |
Non-Patent Citations (1)
| Title |
|---|
| 叶片扭转和偏斜型面测具;宋慧军等;《科技创新与应用》;20161231(第30期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110823072A (en) | 2020-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110823072B (en) | Turbofan rectifier casing detection method and device | |
| CN110954044B (en) | Connecting rod detection method | |
| CN110567339B (en) | Method for detecting position degree of circumferential hole on end face of super-huge type bearing | |
| CN105066883B (en) | A kind of method of quick measurement revolving parts end face pin hole position | |
| CN104197876B (en) | A kind of contact air bearing gauge head | |
| CN107621216B (en) | Automobile steering knuckle combined gauge | |
| CN210486707U (en) | Air jet loom dysmorphism reed groove detection device | |
| CN206321193U (en) | A kind of special gauge for IC engine airframe cylinder holes coaxality measurement | |
| CN105783628B (en) | Threaded hole detects gauge and detection device | |
| CN108489438A (en) | A kind of detection method of contact drilling quality | |
| CN113059515A (en) | Measuring clamp and measuring method for chord width of turbine blade shroud of aircraft engine | |
| CN108709475B (en) | Utensil is examined in oblique oilhole angle detection special use of cylinder block | |
| CN203534497U (en) | Connecting rod detecting machine | |
| CN217005623U (en) | Gear shaft height detection tool | |
| CN106052496B (en) | A kind of liquid storage device caliber gauge | |
| CN209166802U (en) | A kind of detection device of high-accuracy automobile assembling pipe fitting | |
| CN210512897U (en) | Spindle ring jump detection device | |
| CN209783466U (en) | Centrality of rubber roller processing hole examines utensil | |
| CN218211149U (en) | Checking fixture for ejector rod | |
| CN109798826A (en) | A kind of submerged pump pump head measurement tooling and method | |
| CN213238747U (en) | Parallelism detection tool for parallel rotating shafts | |
| CN218329840U (en) | Pipe check out test set | |
| CN219121230U (en) | Adjustable keyway plug gauge verifying attachment | |
| CN215893497U (en) | Special gauge for detecting deformation of U-shaped aluminum alloy control arm blank | |
| CN210533203U (en) | Clamping tool for steel tape detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |