CN106441856B - A kind of big leaf quality square measuring device of complicated surface - Google Patents
A kind of big leaf quality square measuring device of complicated surface Download PDFInfo
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- CN106441856B CN106441856B CN201611046518.4A CN201611046518A CN106441856B CN 106441856 B CN106441856 B CN 106441856B CN 201611046518 A CN201611046518 A CN 201611046518A CN 106441856 B CN106441856 B CN 106441856B
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- positioning
- measuring device
- blade
- convex platform
- leaf quality
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a kind of big leaf quality square measuring device of complicated surface, the big leaf quality square measuring device of complicated surface constitutes as follows: clamp nut (1), gland (2), screw rod (3), the first positioning pin (4), the second positioning pin (5), attachment screw (6), measuring device pedestal (7), positioning cylinder (8), the first positioning convex platform (9) and the second positioning convex platform (10)；Wherein, measuring device pedestal (7) is connected on the positioning surface of moment of mass measuring instrument by attachment screw (6).The big leaf quality square measuring device of complicated surface is bold in innovation in the selection of materials and positioning form, and pedestal uses aluminium alloy, and positioning pin and positioning surface use No. 20 steel, that is, ensure that the requirement of maximum weight, and meet the intensity of measuring device.The positioning requirements of blade complicated surface are adapted to using positioning finger setting, accurate positioning is reliable.
Description
Technical field
The present invention relates to the design of the structure of measuring device and applied technical fields, specifically provide a kind of complicated surface great Ye
Tablet quality square measuring device.
Background technique
For engine rotor blade on wheel disc there are two types of the arrangement methods of assemble sequence, the first is by leaf quality size
Sequence, second is by leaf quality square Optimal scheduling.There are also the ordering requirements of blade frequencies for some.By the big float of leaf quality
The method of sequence, first weighs to blade, is arranged blade by the sequence of quality from big to small using artificial gimmick, then take 1
The method of 1, slice weight blade light blade is ranked up.This sort method low efficiency, and the blade order being discharged is to the first of rotor
Beginning amount of unbalance is affected, and the purpose that the amount of unbalance of disk is offset using vanes permutation is not achieved.It needs to use in equilibrium process
Distribution situation according to amount of unbalance adjusts blade rigging position, may adjust repeatedly, the efficiency of balance is lower, labor intensity
It is larger.Using the method for optimizing sequence by leaf quality square, the imbalance that blade offsets part or all of disk is not used only
Amount, reaches the smallest state of rotor assembly initial unbalance, also provides the angle of rotor unbalance value after optimizing simultaneously to position
It sets and size greatly improves hand labor efficiency, fill for engine so that next component assembles control initial unbalance,
With the foundation of optimization is provided, artificial sort method of weighing, which carries out blade arrangement, to be completed.
Engine blade moment of mass measurement is to provide the arrangement form that blade assembles to engine turbine, compressor rotor
With data foundation, guarantee engine turbine, compressor rotor can reach in assembly blade most preferably arrange state and it is the smallest not
Aequum.The measurement and sequence work of leaf quality square not only ensure that the balance quality of blade, also improve working efficiency, have
Help guarantee the assembling quality of engine turbine and compressor rotor.To guarantee that aero-turbine rotor can expire in assembly
Sufficient design requirement measures sequence to leaf weight square, and blade is pressed optimum balance status park, is reduced because imbalance causes
Vibration.
Rotor assembly is made of wheel disc and several blades, and blade is attached in the tongue-and-groove of wheel disc by tenon tooth, blade tenon tooth
Generally fir number type or dove-tail form, blade blade has certain torsional angle, but tenon tooth and wheel disc engagement tabs are generally the inclined-plane of rule,
Two sides are all planes after assembly.The tooling of measurement leaf quality square generally simulates the tenon tooth clamping blade tenon tooth of wheel disc, fixed on one side
Position is adjusted with spring leaf compress on one side, can be completed clamping work of the blade on moment of mass instrument, be guaranteed that leaf quality square is worth
Measurement.
People are highly desirable to obtain a kind of big leaf quality square measuring device of the complicated surface that technical effect is excellent.
Summary of the invention
The object of the present invention is to provide a kind of big leaf quality square measuring devices of complicated surface that technical effect is excellent.
The big leaf quality square measuring device of complicated surface constitutes as follows: clamp nut 1, gland 2, screw rod 3, first are fixed
Position pin 4, the second positioning pin 5, attachment screw 6, measuring device pedestal 7, positioning cylinder 8, the first positioning convex platform 9 and the second convex
Platform 10；Wherein, measuring device pedestal 7 is connected on the positioning surface of moment of mass measuring instrument by attachment screw 6, and positioning cylinder 8
In in complicated surface big leaf quality square hole, four screws 6 on measuring device pedestal 7 are tightened, measuring device pedestal 7 is close to
The positioning surface of moment of mass measuring instrument.First positioning convex platform 9 is fixedly connected on the right side bottom end of measuring device pedestal 7, the second positioning
Boss 10 is fixedly connected on the left side of measuring device pedestal 7, and the second positioning convex platform 10 is higher than the first positioning convex platform 9, the first positioning
Pin 4 is fixedly connected on the right side of the first positioning convex platform 9, and the second positioning pin 5 is fixedly connected on the left side of the second positioning convex platform 10, spiral shell
Bar 3 is connected to the right side of the second positioning convex platform 10, and gland 2 is connected on screw rod 3 by clamp nut 1.The bottom surface radian of gland 2
It coincide with tested blade blade back radian, gland not warpage when guaranteeing to compress.Gland 2 and clamp nut 1 are attached to screw rod 3
On, the moment values of measuring device on moment of mass instrument are zeroed, can not be such as zeroed, the counterweight adjusted in moment of mass instrument returns moment values
Zero, gland 2 and clamp nut 1 are then removed, blade is attached in measuring device, is adjacent to two positioning convex platforms of blade respectively
Positioning pin lifts blade with hand and is at horizontal position, passes through the screw rod 3 in measuring device with gland 2 and is pressed into blade tenon
On the arc surface of head, adjustment gland 2 presses upper clamp nut 1 after being bonded with tenon arc surface.Measure leaf quality square value.
Turbine blade is that high hard material K465 essence casting blade uses TLP diffusion welding (DW) connection to connect into integral ring-shaped, turbine leaf
Piece is wide string large-scale blades, and a length of 215mm in blade passage surface, chord width is about 150mm, and exhaust side is only 0.5mm, basin, back
Be to tenon it is complex-curved, be made of one section of facet and two sections of arc surfaces, be diffused welding before will to turbo blade into
Row claims the work of moment of mass, sequence, and because blade does not have well-regulated tenon, tenon basin is complex-curved, measurement moment of mass backwards
Shi Yaoqiu blade center and moment of mass instrument measuring center carry out positioning and clamping in the same plane, because can not find orientable face,
Measuring device design is highly difficult.And leaf quality relatively weighs 6Kg, the biggest quality that bears of existing moment of mass instrument is 10Kg, is added
Upper measuring device weight is likely to the load-bearing limit beyond moment of mass instrument.Measuring device weight must control within 4Kg, control
Quality processed proof strength again, makes center of gravity when Blade measuring not sink, and difficulty is very big, because being measured with irregular face clamping, surveys
Whether result is accurately difficult to determine after amount.A kind of this measuring device structure, can stablize and fix turbo blade, complete moment of mass
Work is measured, the accuracy of measurement result is analyzed by leaf three-dimensional model.
According to the working principle of moment of mass measuring instrument, the axial direction of fixture and moment of mass measuring instrument mating surface to vane centroid away from
It should be the moment of mass arm of force of blade to pivot distance Q plus moment of mass instrument and fixture mating surface from L2.But the mass center of every blade
Difference, measuring device cannot be considered in terms of the centroid position of every blade, and blade design figure will not provide the radius of vane centroid,
But blade tenon bottom surface is provided to engine center radius.When being commonly designed measuring device, L2 value just presses blade bottom surface to hair
Motivation center radius calculates.For the Q of moment of mass instrument having a size of 125, blade positioning surface to engine center distance is 168, is surveyed in this way
Device positioning surface is measured to moment of mass instrument knife-edge part distance only 43, is not able to satisfy measuring device clamping requirement.According to previous experiences,
Moment of mass measurement is general not to give specified value, as long as not having shadow to vanes permutation in the moment of mass value that same state measurement obtains
It rings, L2+Q numerical value not necessarily have to be just the same to engine axial distance with vane centroid.Arm of force difference is the number measured
According to corresponding multiple is accordingly expanded or shunk, the amount of unbalance of blade is not influenced, does not influence vanes permutation result.Then view is surveyed
Amount device design structure situation provides L2 value.
For blade when carrying out moment of mass measurement, because there are also manufacturing procedures after blade mass metering square, blade is not end-state,
Positioning is used when being used to process there are two boss at blade tenon at this time.Leaf quality itself reaches 6Kg, and measuring device is steady by blade
Fixed positioning, and can not such as conventional measurement devices clamping blade tenon, need to position and compress on curved surface.Blade inframarginal
Two boss reserved are machining benchmarks, and size is relatively accurate, and measuring device is positioned using the two faces, because that can not be determined with plane
Position uses two positioning finger settings, and a positioning pin limits the false boss of a blade, and two positioning pins are axial by blade
Limit.Bolt is passed through using the square hole at blade inframarginal, pushes down blade with the curved surface gland of polyurethane, with clamp nut
Gland is compressed, keeps blade circumferentially positioned.Because measuring device quality is light as far as possible, so the main body of measuring device uses cast aluminium material
Material, only positioning surface 45# steel.By measuring device Weight control in the permission mass range of moment of mass instrument.Measuring device with
The outer circle and position of mounting hole of moment of mass instrument connection are identical as other measuring devices.
The big leaf quality square measuring device submount material of complicated surface uses aluminium alloy, significantly reduces measuring device
Overall weight meets weight of equipment limitation and requires.The positioning to blade, cylindrical shaft are realized using two straight pins being staggeredly located
Line is contacted with two positioning cambered surface lines of blade tenon, is accurately positioned the axial position of blade, the diameter of two positioning table limitation blades
To position.Measuring device is to guarantee that the accurate positioning of complicated surface blade in turn ensures the reliability of measurement data.
The big leaf quality square measuring device of complicated surface is bold in innovation in the selection of materials and positioning form, pedestal
Using aluminium alloy, positioning pin and positioning surface use No. 20 steel, that is, ensure that the requirement of maximum weight, and meet measuring device
Intensity.The positioning requirements of blade complicated surface are adapted to using positioning finger setting, accurate positioning is reliable.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is described in further detail:
Fig. 1 is the big leaf quality square measuring device main view of complicated surface；
Fig. 2 is the big leaf quality square measuring device top view of complicated surface；
Fig. 3 is the big leaf quality square measuring device right view of complicated surface.
Specific embodiment
Embodiment 1
The big leaf quality square measuring device of complicated surface constitutes as follows: clamp nut 1, gland 2, screw rod 3, first are fixed
Position pin 4, the second positioning pin 5, attachment screw 6, measuring device pedestal 7, positioning cylinder 8, the first positioning convex platform 9 and the second convex
Platform 10；Wherein, measuring device pedestal 7 is connected on the positioning surface of moment of mass measuring instrument by attachment screw 6, and positioning cylinder 8
In in complicated surface big leaf quality square hole, four screws 6 on measuring device pedestal 7 are tightened, measuring device pedestal 7 is close to
The positioning surface of moment of mass measuring instrument.First positioning convex platform 9 is fixedly connected on the right side bottom end of measuring device pedestal 7, the second positioning
Boss 10 is fixedly connected on the left side of measuring device pedestal 7, and the second positioning convex platform 10 is higher than the first positioning convex platform 9, the first positioning
Pin 4 is fixedly connected on the right side of the first positioning convex platform 9, and the second positioning pin 5 is fixedly connected on the left side of the second positioning convex platform 10, spiral shell
Bar 3 is connected to the right side of the second positioning convex platform 10, and gland 2 is connected on screw rod 3 by clamp nut 1.The bottom surface radian of gland 2
It coincide with tested blade blade back radian, gland not warpage when guaranteeing to compress.Gland 2 and clamp nut 1 are attached to screw rod 3
On, the moment values of measuring device on moment of mass instrument are zeroed, can not be such as zeroed, the counterweight adjusted in moment of mass instrument returns moment values
Zero, gland 2 and clamp nut 1 are then removed, blade is attached in measuring device, is adjacent to two positioning convex platforms of blade respectively
Positioning pin lifts blade with hand and is at horizontal position, passes through the screw rod 3 in measuring device with gland 2 and is pressed into blade tenon
On the arc surface of head, adjustment gland 2 presses upper clamp nut 1 after being bonded with tenon arc surface.Measure leaf quality square value.
Turbine blade is that high hard material K465 essence casting blade uses TLP diffusion welding (DW) connection to connect into integral ring-shaped, turbine leaf
Piece is wide string large-scale blades, and a length of 215mm in blade passage surface, chord width is about 150mm, and exhaust side is only 0.5mm, basin, back
Be to tenon it is complex-curved, be made of one section of facet and two sections of arc surfaces, be diffused welding before will to turbo blade into
Row claims the work of moment of mass, sequence, and because blade does not have well-regulated tenon, tenon basin is complex-curved, measurement moment of mass backwards
Shi Yaoqiu blade center and moment of mass instrument measuring center carry out positioning and clamping in the same plane, because can not find orientable face,
Measuring device design is highly difficult.And leaf quality relatively weighs 6Kg, the biggest quality that bears of existing moment of mass instrument is 10Kg, is added
Upper measuring device weight is likely to the load-bearing limit beyond moment of mass instrument.Measuring device weight must control within 4Kg, control
Quality processed proof strength again, makes center of gravity when Blade measuring not sink, and difficulty is very big, because being measured with irregular face clamping, surveys
Whether result is accurately difficult to determine after amount.A kind of this measuring device structure, can stablize and fix turbo blade, complete moment of mass
Work is measured, the accuracy of measurement result is analyzed by leaf three-dimensional model.
According to the working principle of moment of mass measuring instrument, the axial direction of fixture and moment of mass measuring instrument mating surface to vane centroid away from
It should be the moment of mass arm of force of blade to pivot distance Q plus moment of mass instrument and fixture mating surface from L2.But the mass center of every blade
Difference, measuring device cannot be considered in terms of the centroid position of every blade, and blade design figure will not provide the radius of vane centroid,
But blade tenon bottom surface is provided to engine center radius.When being commonly designed measuring device, L2 value just presses blade bottom surface to hair
Motivation center radius calculates.For the Q of moment of mass instrument having a size of 125, blade positioning surface to engine center distance is 168, is surveyed in this way
Device positioning surface is measured to moment of mass instrument knife-edge part distance only 43, is not able to satisfy measuring device clamping requirement.According to previous experiences,
Moment of mass measurement is general not to give specified value, as long as not having shadow to vanes permutation in the moment of mass value that same state measurement obtains
It rings, L2+Q numerical value not necessarily have to be just the same to engine axial distance with vane centroid.Arm of force difference is the number measured
According to corresponding multiple is accordingly expanded or shunk, the amount of unbalance of blade is not influenced, does not influence vanes permutation result.Then view is surveyed
Amount device design structure situation provides L2 value.
For blade when carrying out moment of mass measurement, because there are also manufacturing procedures after blade mass metering square, blade is not end-state,
Positioning is used when being used to process there are two boss at blade tenon at this time.Leaf quality itself reaches 6Kg, and measuring device is steady by blade
Fixed positioning, and can not such as conventional measurement devices clamping blade tenon, need to position and compress on curved surface.Blade inframarginal
Two boss reserved are machining benchmarks, and size is relatively accurate, and measuring device is positioned using the two faces, because that can not be determined with plane
Position uses two positioning finger settings, and a positioning pin limits the false boss of a blade, and two positioning pins are axial by blade
Limit.Bolt is passed through using the square hole at blade inframarginal, pushes down blade with the curved surface gland of polyurethane, with clamp nut
Gland is compressed, keeps blade circumferentially positioned.Because measuring device quality is light as far as possible, so the main body of measuring device uses cast aluminium material
Material, only positioning surface 45# steel.By measuring device Weight control in the permission mass range of moment of mass instrument.Measuring device with
The outer circle and position of mounting hole of moment of mass instrument connection are identical as other measuring devices.
The big leaf quality square measuring device submount material of complicated surface uses aluminium alloy, significantly reduces measuring device
Overall weight meets weight of equipment limitation and requires.The positioning to blade, cylindrical shaft are realized using two straight pins being staggeredly located
Line is contacted with two positioning cambered surface lines of blade tenon, is accurately positioned the axial position of blade, the diameter of two positioning table limitation blades
To position.Measuring device is to guarantee that the accurate positioning of complicated surface blade in turn ensures the reliability of measurement data.
The big leaf quality square measuring device of complicated surface is bold in innovation in the selection of materials and positioning form, pedestal
Using aluminium alloy, positioning pin and positioning surface use No. 20 steel, that is, ensure that the requirement of maximum weight, and meet measuring device
Intensity.The positioning requirements of blade complicated surface are adapted to using positioning finger setting, accurate positioning is reliable.
Claims (1)
1. a kind of big leaf quality square measuring device of complicated surface, it is characterised in that: the big leaf quality square of complicated surface is surveyed
It is as follows to measure device composition: clamp nut (1), gland (2), screw rod (3), the first positioning pin (4), the second positioning pin (5), connection spiral shell
Follow closely (6), measuring device pedestal (7), positioning cylinder (8), the first positioning convex platform (9) and the second positioning convex platform (10)；Wherein, it measures
Device pedestal (7) is connected on the positioning surface of moment of mass measuring instrument by attachment screw (6), and positioning cylinder (8) is located at complex shape
In the big leaf quality square hole of face, the first positioning convex platform (9) is fixedly connected on the right side bottom end of measuring device pedestal (7), and second is fixed
Position boss (10) is fixedly connected on the left side of measuring device pedestal (7), and the second positioning convex platform (10) is higher than the first positioning convex platform
(9), the first positioning pin (4) is fixedly connected on the right side of the first positioning convex platform (9), and the second positioning pin (5) is fixedly connected on second
The left side of positioning convex platform (10), screw rod (3) are connected to the right side of the second positioning convex platform (10), and gland (2) passes through clamp nut (1)
It is connected on screw rod (3), the bottom surface radian of gland (2) and tested blade blade back radian coincide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611046518.4A CN106441856B (en) | 2016-11-23 | 2016-11-23 | A kind of big leaf quality square measuring device of complicated surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046518.4A CN106441856B (en) | 2016-11-23 | 2016-11-23 | A kind of big leaf quality square measuring device of complicated surface |
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| CN106441856A CN106441856A (en) | 2017-02-22 |
| CN106441856B true CN106441856B (en) | 2018-12-14 |
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| CN108955977A (en) * | 2018-05-25 | 2018-12-07 | 华瑞（江苏）燃机服务有限公司 | A kind of measurement method of combustion engine turbine blade weight square |
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| JP4056179B2 (en) * | 1999-08-06 | 2008-03-05 | 三菱重工業株式会社 | Center of gravity measurement device |
| CN101271032A (en) * | 2008-05-05 | 2008-09-24 | 杭州汽轮机股份有限公司 | Measuring method and device for locked rotor torque of turbine rotor blade |
| CN202607465U (en) * | 2011-11-10 | 2012-12-19 | 中国南方航空工业(集团)有限公司 | Engine blade positioning clamp |
| CN102962694A (en) * | 2012-11-21 | 2013-03-13 | 四川成发航空科技股份有限公司 | Clamping positioning device for finish machining aero-engine turbine blade |
| CN203156378U (en) * | 2012-11-21 | 2013-08-28 | 四川成发航空科技股份有限公司 | Clamping and positioning device for aero-engine turbine blade finishing |
| CN204855091U (en) * | 2015-07-17 | 2015-12-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Anchor clamps are measured to ARC blade weight square |
-
2016
- 2016-11-23 CN CN201611046518.4A patent/CN106441856B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4056179B2 (en) * | 1999-08-06 | 2008-03-05 | 三菱重工業株式会社 | Center of gravity measurement device |
| CN101271032A (en) * | 2008-05-05 | 2008-09-24 | 杭州汽轮机股份有限公司 | Measuring method and device for locked rotor torque of turbine rotor blade |
| CN202607465U (en) * | 2011-11-10 | 2012-12-19 | 中国南方航空工业(集团)有限公司 | Engine blade positioning clamp |
| CN102962694A (en) * | 2012-11-21 | 2013-03-13 | 四川成发航空科技股份有限公司 | Clamping positioning device for finish machining aero-engine turbine blade |
| CN203156378U (en) * | 2012-11-21 | 2013-08-28 | 四川成发航空科技股份有限公司 | Clamping and positioning device for aero-engine turbine blade finishing |
| CN204855091U (en) * | 2015-07-17 | 2015-12-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Anchor clamps are measured to ARC blade weight square |
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Address after: 110000 No. 6 Dongta Street, Dadong District, Shenyang City, Liaoning Province Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |