CN110530259A - A kind of adjustable pitch airscrew pitch measurement method - Google Patents

A kind of adjustable pitch airscrew pitch measurement method Download PDF

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Publication number
CN110530259A
CN110530259A CN201910735978.5A CN201910735978A CN110530259A CN 110530259 A CN110530259 A CN 110530259A CN 201910735978 A CN201910735978 A CN 201910735978A CN 110530259 A CN110530259 A CN 110530259A
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pitch
airscrew
reference point
coordinate system
adjustable
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CN110530259B (en
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丁举
刘正浩
王建强
叶正华
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708th Research Institute of CSIC
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708th Research Institute of CSIC
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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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes

Abstract

The invention discloses a kind of adjustable pitch airscrew pitch measurement methods, comprising: step 1, adjustable pitch airscrew is adjusted to setting screw pitch position；Step 2, all positioning punctuates on adjustable pitch airscrew are scanned using scanner and scanning result is sent in a calculating equipment；Step 3, it calculates equipment and one first coordinate system is formed according to scanning result；Step 4, in the first coordinate system, the first reference point and the second reference point are chosen on the every blade 1 of adjustable pitch airscrew respectively, and the actual pitch value of the first reference point and the second reference point is calculated；Step 5, adjustable pitch airscrew is under other screw pitch position in addition to setting screw pitch position, is then returned to step 2, export the actual pitch value of all first reference points and all second reference points.Above-mentioned technical proposal the utility model has the advantages that obtain the true pitch of propeller, can be widely applied to propeller place vertically substantially and axis basic horizontal place working situation.

Description

A kind of adjustable pitch airscrew pitch measurement method
Technical field
The present invention relates to shipbuilding technical field more particularly to a kind of adjustable pitch airscrew pitch measurement methods.
Background technique
Propeller is the propeller form being most widely used on current various ships, is broadly divided into constant pitch airscrew and tune Away from propeller.Constant pitch airscrew screw pitch is unadjustable, can only be worked with design pitch during shipping transport, not adapt to ship Multi-state demand.Adjustable pitch airscrew screw pitch is adjustable, can be worked using various screw pitch during shipping transport, be adapted to very much The multi-state demand of ship, is conducive to host and issues maximum power at various speeds.Tuning for Controllable Pitch Propeller includes rotatable blade, paddle The rotating vane mechanism etc. installed inside hub and propeller hub.Blade can be driven to rotate when distance adjustor movement, to change spiral The screw pitch of paddle.Workshop is integrated in tuning for Controllable Pitch Propeller finished product blade is needed to be assembled on propeller hub, and carry out the assembly tune of various screw pitch positions Examination, but the assembly precision of distance-adjusting oar blade screw pitch is obtained by analysis all the time, lacks direct measurement data.Tuning for Controllable Pitch Propeller The precision of each blade pitch is an important indicator in manufacturing process, directly influences hydrodynamic performance, the vacuole of propeller Performance and noiseproof feature.It is sometimes found that pitch tuning for Controllable Pitch Propeller setting is with design forecast result, there are inconsistent feelings in on-board testing Condition, to suspect that screw pitch indicated value has differences with true pitch.
Using the traditional measurement method of the apparatus measures screw pitch such as screw pitch gauge, it is desirable that blade must be horizontally arranged, and not adapted to The bench test state of propeller is very or even real ship installation condition.Propeller is horizontal positioned, propeller shaft to vertical direction one It causes, can measure the pitch of blade face or blade back using screw pitch gauge or three-coordinates measuring machine.But it assembles in debugging process Tuning for Controllable Pitch Propeller is placed vertically, and installing tuning for Controllable Pitch Propeller (or spacing paddle) on the quarter is also to place vertically, at this time propeller shaft to level side To almost the same, it is difficult to using screw pitch gauge or three-coordinates measuring machine measurement blade face or the pitch of blade back.
Summary of the invention
The embodiment of the present invention is intended to overcome the above difficulty, provides a kind of adjustable pitch airscrew pitch measurement method, special Sign is, the adjustable pitch airscrew is adjusted under preset measurement pattern, and in the multiple pre- of the adjustable pitch airscrew If positioning punctuate is pasted in position in advance, multiple screw pitch positions are also set up in the paddle shaft of the adjustable pitch airscrew, including a setting Screw pitch position, the setting screw pitch position correspond to a setting helical characteristic radius；
Further include:
Step 1, the adjustable pitch airscrew is adjusted to the setting screw pitch position；
Step 2, all positioning punctuates on the adjustable pitch airscrew are scanned using scanner, and by scanning result It is sent in a calculating equipment；
Step 3, the calculating equipment forms one first coordinate system, the original of first coordinate system according to the scanning result Point is the central point of the oil cylinder end face of the adjustable pitch airscrew, and X-Y plane is the oil cylinder end face, and X-axis and Y-axis are respectively directed to institute State the blade of adjustable pitch airscrew, Z axis is perpendicular to the oil cylinder end face and is directed toward the slurry axis of the adjustable pitch airscrew；
Step 4, in first coordinate system, using the helical characteristic radius that sets as reference, with first coordinate The origin of system be the center of circle, chosen on the guide margin and lagging edge on every blade of the adjustable pitch airscrew respectively the first reference point and Second reference point, and the actual pitch value of the first reference point and the second reference point is calculated；
Step 5, the adjustable pitch airscrew is under other screw pitch position in addition to the setting screw pitch position, is then returned The step 2 is returned, after all screw pitch positions in the paddle shaft measure, exports all first reference points With the actual pitch value of all second reference points.
Preferably, the angle of the axial direction and horizontal direction of the adjustable pitch airscrew of the measurement pattern be less than or equal to ± 15°。
Preferably, multiple cylindrical toolings are provided on the oil cylinder of the adjustable pitch airscrew, the cylinder tooling is set The blade of seated position and the adjustable pitch airscrew corresponds；The positioning punctuate is made by glass microballoon, is pasted onto the tune On oil cylinder, Jiang Grains, blade and each cylindrical tooling away from propeller.
Preferably, the distance between described positioning punctuate is less than or equal to 100 millimeters, and in the song of the adjustable pitch airscrew Rate changes intensive place and is encrypted.
Preferably, the range that the positioning punctuate is pasted is from the Jiang Grains to from set setting helical characteristic radius.
Preferably, in first coordinate system, the axis of the cylinder end face of the oil cylinder of the adjustable pitch airscrew is set as described The Z axis of first coordinate system, the cylinder end face of the oil cylinder of the adjustable pitch airscrew is set as the first coordinate system X-Y plane, described The line of cylindrical tooling and the origin is set as the Y-axis of first coordinate system, and the first coordinate system X-axis is perpendicular to described The Y-axis of first coordinate system.
Preferably, according to following conditions, first reference point and second reference point are chosen in the first coordinate system:
The distance of the origin of first reference point and second reference point to the first coordinate system is the setting spiral shell Value away from characteristic radius, and,
First reference point and second reference point meet following formula:
θ1+θ2=θ
Wherein,
θ1For indicating the space angle of the Y-axis of first reference point and first coordinate system,
θ2For indicating the space angle of the Y-axis of second reference point and first coordinate system,
When θ is that the adjustable pitch airscrew is in the setting screw pitch position, the chord length value of the blade is corresponding circumferential maximum Angle.
Preferably, the actual pitch value Δ P of the first reference point and the second reference point is calculated1And Φ1, wherein Δ P1= 360/(θ1+θ2)·(ZA1-ZB1), Φ1=arctan (Δ P1/(2πr1))；
r1=0.7R1；
Wherein, r1For indicating the setting helical characteristic radius；
R1For indicating the setting paddle maximum radius of the adjustable pitch airscrew under the setting screw pitch position；
ZA1For indicating first reference point at a distance from the Z axis of first coordinate system；
ZB1For indicating second reference point at a distance from the Z axis of first coordinate system.
Above-mentioned technical proposal the utility model has the advantages that allow propeller be in paddle shaft joint debugging or roll adjustment experiment in the state of, obtain spiral shell The true pitch of paddle is revolved, can be widely applied to the working situation that propeller is placed vertically substantially.
Detailed description of the invention
Fig. 1 is to carry out the schematic device of laser scanning in preferred embodiment of the invention；
Fig. 2 is to carry out the flow diagram of laser scanning in preferred embodiment of the invention；
Fig. 3 is the schematic diagram of cylindrical tooling in preferred embodiment of the invention；
Fig. 4 is to set the schematic diagram of the selection reference point under screw pitch in preferred embodiment of the invention；
Fig. 5 is the schematic diagram of the selection reference point of other screw pitch positions in preferred embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
A kind of adjustable pitch airscrew pitch measurement method is provided in preferred embodiment of the invention, carries out laser scanning Schematic device is as shown in Figure 1, specific steps are as shown in Figure 2, comprising:
Adjustable pitch airscrew is adjusted under preset measurement pattern, and pre- in multiple predeterminated positions of adjustable pitch airscrew Positioning punctuate 5 is first pasted, also sets up multiple screw pitch positions in the paddle shaft 4 of adjustable pitch airscrew, including a setting screw pitch position, setting Screw pitch position corresponds to a setting helical characteristic radius；
Further include:
Step 1, adjustable pitch airscrew is adjusted to setting screw pitch position；
Step 2, all positioning punctuates 5 on adjustable pitch airscrew are scanned using scanner 6, and scanning result is sent out It send to one and calculates in equipment 7；
Step 3, it calculates equipment 7 and one first coordinate system is formed according to scanning result, the origin of the first coordinate system is roll adjustment spiral shell The central point of 3 end face of oil cylinder of paddle is revolved, X-Y plane is 3 end face of oil cylinder, and X-axis and Y-axis are respectively directed to the blade 1 of adjustable pitch airscrew Radial direction, Z axis is perpendicular to 3 end face of oil cylinder and is directed toward 4 direction of paddle shaft of adjustable pitch airscrew；
It step 4, is circle with the origin of the first coordinate system to set helical characteristic radius as reference in the first coordinate system The heart is chosen the first reference point and the second reference point on the guide margin and lagging edge on the every blade 1 of adjustable pitch airscrew respectively, and is counted Calculation obtains the actual pitch value of the first reference point and the second reference point；
Step 5, adjustable pitch airscrew is under other screw pitch position in addition to setting screw pitch position, is then returned to step 2, After all screw pitch positions in paddle shaft 4 measure, the reality of all first reference points and all second reference points is exported Pitch.
Specifically, the setting screw pitch position of adjustable pitch airscrew is that adjustable pitch airscrew has just been limited in production assembly factory , i.e., adjustable pitch airscrew is adjusted, corresponding be overlapped of the K line of the CL line of the flange of blade 1 and paddle Grains 2 can be allowed into roll adjustment Propeller reaches setting screw pitch position.In addition to this, regulation can also adjust other spiral shells such as zero-bit, reversing stop position away from propeller Away from position.For adjustable pitch airscrew under different screw pitch positions, corresponding paddle maximum radius R is also different, and most because of characteristic radius r and paddle Large radius R has linear relationship r=0.7R, so under different screw pitch positions, the corresponding characteristic radius r of adjustable pitch airscrew It is different.
In order to acquire actual pitch value in the application, adjustable pitch airscrew is first adjusted to setting screw pitch position, obtains setting paddle Maximum radius R1Setting helical characteristic radius r is calculated by numerical value again1, utilizing fixed setting helical characteristic radius r1 Value, go to be scanned the adjustable pitch airscrew under different screw pitch positions and take a little, i.e. the oil cylinder end face of reference point to adjustable pitch airscrew The radial distance of central point is always setting helical characteristic radius r1Value, so that it may the actual pitch of adjustable pitch airscrew be calculated Value.
Wherein, setting helical characteristic radius value r is being obtained1When, it is used after being horizontally arranged using adjustable pitch airscrew and uses screw pitch Measuring instrument can conveniently measure setting paddle maximum radius R1, and because the structure of propeller designs, the measurement ten of paddle maximum radius Divide simple, as a result also very accurate, recycling setting paddle maximum radius R1With setting helical characteristic radius r1Linear relationship r1= 0.7·R1Acquire setting helical characteristic radius.In presently preferred embodiments of the present invention, the axial direction of the adjustable pitch airscrew of measurement pattern and The angle of horizontal direction is less than or equal to ± 15 °.
Specifically, technique production and component assembly all can allow the adjustable pitch airscrew of production error occur, then need to measure The screw pitch for the adjustable pitch airscrew that actual fabrication is completed, traditional measurement method make adjustable pitch airscrew horizontal positioned, can practical operation In the adjustable pitch airscrew in stern be at the state of placing vertically, therefore not can be measured the roll adjustment spiral in practical application The numerical value of paddle, the present invention design adjustable pitch airscrew pitch measurement method, in preset measurement pattern, i.e., adjustable pitch airscrew is arranged The axial direction of adjustable pitch airscrew and the angle of horizontal direction are generally within the scope of ± 15 °, the roll adjustment spiral under this measurement pattern Paddle is widely used in the bench test scene or even reality ship application scenarios of propeller, actual demand is more able to satisfy, in this measurement The state of the true screw pitch of adjustable pitch airscrew can be obtained under mode by paddle shaft joint debugging or roll adjustment experiment.
In presently preferred embodiments of the present invention, multiple cylindrical toolings 8 are provided on the oil cylinder 3 of adjustable pitch airscrew, it is cylindrical The setting position of tooling 8 and the blade 1 of adjustable pitch airscrew correspond；Positioning punctuate 5 is made by glass microballoon, is pasted onto roll adjustment In the 3, Jiang Grains 2 of oil cylinder of propeller, blade 1 and each cylindrical tooling 8.
Specifically, cylindrical tooling 8 is as shown in figure 3, cylindrical tooling is at the bolt hole of oil cylinder 3, cylindrical tooling Axis perpendicular to oil cylinder 3 end face.
In presently preferred embodiments of the present invention, the distance between positioning punctuate 5 is less than or equal to 100 millimeters, and in roll adjustment spiral shell The place that the Curvature varying of rotation paddle is intensive is encrypted.
Specifically, it using above-mentioned method for limiting goes that positioning punctuate 5 is installed, is because this allows scanner 6 to glass When glass microballon positioning punctuate 5 is scanned, scanner 6 can identify continuous three or more positioning punctuates 5 simultaneously, at this time Scan data is effective.
In presently preferred embodiments of the present invention, the range that positioning punctuate 5 is pasted is Cong Jiang Grains 2 to set setting helical characteristic radius Place.
In presently preferred embodiments of the present invention, in the first coordinate system, the axis of the cylinder end face of the oil cylinder 3 of adjustable pitch airscrew is set For the Z axis of the first coordinate system, the cylinder end face of the oil cylinder 3 of adjustable pitch airscrew is set as the first coordinate system X-Y plane, cylindrical tooling The Y-axis of the first coordinate system, Y-axis of the first coordinate system X-axis perpendicular to the first coordinate system are set as with the line of origin.
In presently preferred embodiments of the present invention, according to following conditions, the first reference point and second are chosen in the first coordinate system Reference point:
The distance of the origin of first reference point and the second reference point to the first coordinate system is setting helical characteristic radius Value, and,
First reference point and second reference point meet following formula:
θ1+θ2=θ
Wherein,
θ1For indicating the space angle of the Y-axis of first reference point and first coordinate system,
θ2For indicating the space angle of the Y-axis of second reference point and first coordinate system,
θ chooses according to the corresponding circumferential maximum angle of chord of blade long value at characteristic radius.
In presently preferred embodiments of the present invention, the actual pitch value Δ P of the first reference point and the second reference point is calculated1With Φ1, wherein
ΔP1=360/ (θ1+θ2)·(ZA1-ZB1), Φ1=arctan (Δ P1/(2πr1))；
r1=0.7R1；
Wherein, r1For indicating to set helical characteristic radius；
R1For indicating the setting paddle maximum radius of the adjustable pitch airscrew under setting screw pitch position；
ZA1For indicating the first reference point at a distance from the Z axis of the first coordinate system；
ZB1For indicating the second reference point at a distance from the Z axis of the first coordinate system.
Specifically, it is analyzed in the position of the glass microballoon obtained to scanning, can establish the first coordinate system, obtain spiral shell The spatial information for revolving the positioning punctuate 5 on paddle, in order to more convenient reference point to selection in the first coordinate system Spatial position is defined, and can carry out space conversion to the first coordinate system, space coordinates are converted into cylindrical-coordinate system, In, using the transformation of rectangular space coordinate and cylindrical-coordinate system, establish cylindrical-coordinate system, the i.e. Z axis of cylindrical-coordinate system and first The Z axis of coordinate system is set as being overlapped, and the first coordinate system X-Y plane is set as to the polar coordinates of cylindrical-coordinate systemPlane, first sits Mark the polar coordinates of systemρ in plane is the radial distance of the spatial point and Z axis in cylindrical-coordinate system,It is circular cylindrical coordinate The angle of the X-axis of the line and the first rectangular coordinate system in space diameter of spatial point and Z axis in system.
At this point, as shown in figure 4, chosen on the guide margin and lagging edge on every blade of adjustable pitch airscrew the first reference point and Second reference point, wherein one side in blade close to propeller turning direction is then guide margin, and another side is exactly lagging edge, then the first reference Point is denoted as A1(r1,90-θ1,ZA1), the second reference point is denoted as B1(r2,90+θ2,ZB1), so that it may be calculated the first reference point with The actual pitch value Δ P of second reference point1And Φ1:
ΔP1=360/ (θ1+θ2)·(ZA1-ZB1), Φ1=arctan (Δ P1/(2πr1))
Wherein Δ P1It is screw pitch numerical value, Φ1It is the angle of pitch.
In addition, the first reference point and the second reference point have theoretic factory in the case where propeller is in default screw pitch position The theoreticalpiston value of setting, i.e., factory setting ideally, the spatial position of the first reference point is expressed as A01(r1,90- θ1,Z01), the spatial position of the second reference point is expressed as B01(r2,90+θ2,Z02), it can directly be obtained by the factory setting of propeller To theoreticalpiston value Δ P01And Φ01:
ΔP01=360/ (θ1+θ2)·(Z02-Z01), Φ01=arctan (Δ P01/(2πr1))
By calculating the deviation of actual pitch value and theoreticalpiston value, the shadow of blade 1 screw pitch machining deviation itself is deducted It after sound, can assess under design pitch state, the finger including 1 assembly precision of distance-adjusting oar blade, screw pitch control precision and screw pitch scale plate Show the roll adjustment precision of the numerical value such as precision.Since blade 1 is rigid body, the roll adjustment accuracy AO of the angle of pitch1, i.e. ΔΦ1=Φ1-Φ01, The roll adjustment precision of the angle of pitch of full wafer blade 1 can be equal to.
Specifically, in step 5, adjustable pitch airscrew is adjusted to the spiral shell under other screw pitch position in addition to setting screw pitch position Away under position, such as zero-bit and reversing stop position, as shown in figure 5, taking for the first reference point for choosing and the second reference point requires With calculating process all as in the case where setting screw pitch position, unlike, the first reference point at this time is set at a distance from Z axis ZA2, the second reference point at this time is Z at a distance from Z axisB2, different actual pitch value Δ P will be calculated2And Φ2:
ΔP2=360/ (θ1+θ2)·(ZA2-ZB2), Φ2=arctan (Δ P2/(2πr1))
Also, by calculating the first reference point under setting screw pitch position and the first reference point under other screw pitch positions in Z axis The knots modification Δ Z in directionA, the second reference point under screw pitch position and the second reference point under other screw pitch positions are set in Z-direction Knots modification Δ ZB, the knots modification of pitch and the angle of pitch that propeller is under the state can also be calculated, to assess Roll adjustment precision under the screw pitch position.
By this method, precision whole during tuning for Controllable Pitch Propeller roll adjustment can be assessed, overall precision includes roll adjustment Blade assembly precision, screw pitch control precision, pointing accuracy of screw pitch scale plate etc..It can also be to the propeller being mounted on real ship Screw pitch state carry out accurate evaluation.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.

Claims (8)

1. a kind of adjustable pitch airscrew pitch measurement method, which is characterized in that being adjusted to the adjustable pitch airscrew in preset Under measurement pattern, and positioning punctuate is pasted in advance in multiple predeterminated positions of the adjustable pitch airscrew, the adjustable pitch airscrew Multiple screw pitch positions are also set up in paddle shaft, including a setting screw pitch position, it is special that the setting screw pitch position corresponds to a setting screw pitch Levy radius；Further include:
Step 1, the adjustable pitch airscrew is adjusted to the setting screw pitch position；
Step 2, all positioning punctuates on the adjustable pitch airscrew are scanned using scanner, and scanning result is sent It is calculated in equipment to one；
Step 3, the calculating equipment forms one first coordinate system according to the scanning result, and the origin of first coordinate system is The central point of the oil cylinder end face of the adjustable pitch airscrew, X-Y plane are the oil cylinder end face, and X-axis and Y-axis are respectively directed to the tune Blade radial direction away from propeller, Z axis is perpendicular to the oil cylinder end face and is directed toward the paddle shaft direction of the adjustable pitch airscrew；
Step 4, in first coordinate system, using the helical characteristic radius that sets as reference, with first coordinate system Origin is the center of circle, chooses the first reference point and second on the guide margin and lagging edge on every blade of the adjustable pitch airscrew respectively Reference point, and the actual pitch value of the first reference point and the second reference point is calculated；
Step 5, the adjustable pitch airscrew is under other screw pitch position in addition to the setting screw pitch position, is then returned to institute Step 2 is stated, after all screw pitch positions in the paddle shaft measure, exports all first reference points and institute There is the actual pitch value of second reference point.
2. a kind of adjustable pitch airscrew pitch measurement method according to claim 1, which is characterized in that the measurement pattern The axial direction of the adjustable pitch airscrew and the angle of horizontal direction are less than or equal to ± 15 °.
3. a kind of adjustable pitch airscrew pitch measurement method according to claim 1, which is characterized in that the adjustable pitch airscrew Oil cylinder on be provided with multiple cylindrical toolings, the blade one of the setting position and the adjustable pitch airscrew of the cylinder tooling One is corresponding；The positioning punctuate is made by glass microballoon, is pasted onto oil cylinder, Jiang Grains of the adjustable pitch airscrew, blade and each In the cylinder tooling.
4. a kind of adjustable pitch airscrew pitch measurement method according to claim 3, which is characterized in that the positioning punctuate it Between distance be less than or equal to 100 millimeters, and encrypted in the intensive place of the Curvature varying of the adjustable pitch airscrew.
5. a kind of adjustable pitch airscrew pitch measurement method according to claim 3, which is characterized in that the positioning punctuate is viscous The range of patch is from the Jiang Grains to from set setting helical characteristic radius.
6. a kind of adjustable pitch airscrew pitch measurement method according to claim 1, which is characterized in that first coordinate system In, the axis of the cylinder end face of the oil cylinder of the adjustable pitch airscrew is set as the Z axis of first coordinate system, the adjustable pitch airscrew The cylinder end face of oil cylinder be set as the first coordinate system X-Y plane, the cylinder tooling and the line of the origin are set as The Y-axis of first coordinate system, Y-axis of the first coordinate system X-axis perpendicular to first coordinate system.
7. a kind of adjustable pitch airscrew pitch measurement method according to claim 1, which is characterized in that according to following conditions, First reference point and second reference point are chosen in the first coordinate system:
The distance of the origin of first reference point and second reference point to the first coordinate system is that the setting screw pitch is special The value of radius is levied, and,
First reference point and second reference point meet following formula:
θ1+θ2=θ
Wherein,
θ1For indicating the space angle of the Y-axis of first reference point and first coordinate system,
θ2For indicating the space angle of the Y-axis of second reference point and first coordinate system,
θ is the corresponding circumferential maximum angle of the chord length value of the blade at setting helical characteristic radius position.
8. a kind of adjustable pitch airscrew pitch measurement method according to claim 6, which is characterized in that the first ginseng is calculated The actual pitch value Δ P of examination point and the second reference point1And Φ1, wherein Δ P1=360/ (θ1+θ2)·(ZA1-ZB1), Φ1= arctan(ΔP1/(2πr1))；
r1=0.7R1；
Wherein, r1For indicating the setting helical characteristic radius；
R1For indicating the setting paddle maximum radius of the adjustable pitch airscrew under the setting screw pitch position；
ZA1For indicating first reference point at a distance from the Z axis of first coordinate system；
ZB1For indicating second reference point at a distance from the Z axis of first coordinate system.
CN201910735978.5A 2019-08-09 2019-08-09 Pitch measuring method for controllable pitch propeller Active CN110530259B (en)

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CN112001642A (en) * 2020-08-27 2020-11-27 山东超越数控电子股份有限公司 Ship health assessment method
CN112504151A (en) * 2020-11-26 2021-03-16 大连辽南船厂 Three-dimensional measurement process method for propeller pitch
CN114485373A (en) * 2022-01-05 2022-05-13 武汉船用机械有限责任公司 Adjusting method and adjusting structure of feedback loop of controllable pitch propeller

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CN112504151A (en) * 2020-11-26 2021-03-16 大连辽南船厂 Three-dimensional measurement process method for propeller pitch
CN114485373A (en) * 2022-01-05 2022-05-13 武汉船用机械有限责任公司 Adjusting method and adjusting structure of feedback loop of controllable pitch propeller

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