CN106441856A - Device for measuring mass moment of complex surface large blade - Google Patents
Device for measuring mass moment of complex surface large blade Download PDFInfo
- Publication number
- CN106441856A CN106441856A CN201611046518.4A CN201611046518A CN106441856A CN 106441856 A CN106441856 A CN 106441856A CN 201611046518 A CN201611046518 A CN 201611046518A CN 106441856 A CN106441856 A CN 106441856A
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- Prior art keywords
- blade
- positioning
- measurement apparatus
- moment
- positioning boss
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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 device for measuring the mass moment of a complex surface large blade. The device for measuring the mass moment of the complex surface large blade structurally comprises a pressing screw nut (1), a gland (2), a screw rod (3), a first positioning pin (4), a second positioning pin (5), connecting screws (6), a measuring device base (7), a positioning column (8), a first positioning boss (9) and a second positioning boss (10), wherein the measuring device base (7) is connected with a positioning plane of a mass moment tester through the connecting screws (6). The material and positioning mode of the device for measuring the mass moment of the complex surface large blade are greatly innovated, the base is made of an aluminum alloy, and the positioning pin and the positioning plane are made of #20 steel, so that both the requirement of weight limit is ensured, and the strength of the measuring device is met. Due to the positioning pin for positioning, positioning requirements of the complex surface blade can be met, and accurate and reliable positioning can be achieved.
Description
Technical field
The present invention relates to the structure design of measurement apparatus and applied technical field, specifically provide a kind of complicated surface great Ye
Tablet quality square measurement apparatus.
Background technology
Engine rotor blade arrangement method of assemble sequence on wheel disc has two kinds, the first be by leaf quality size
Sequence, be for second by leaf quality square Optimal scheduling.The ordering requirements for also having blade frequencies having.By the big float of leaf quality
The method of sequence, is weighed to blade first, the order arrangement using artificial maneuver by blade by quality from big to small, then takes 1
The method of the light blade of 1, piece weight blade is ranked up.This sort method efficiency is low, and the blade order that discharges is to the first of rotor
The impact of beginning amount of unbalance is larger, does not reach the purpose of the amount of unbalance for offsetting disk using vanes permutation.Need in equilibrium process to use
According to the distribution situation adjustment blade rigging position of amount of unbalance, may adjust repeatedly, less efficient, the labor intensity of balance
Larger.Method using sequence is optimized by leaf quality square, not only offsets the imbalance of part or all of disk using blade
Amount, reaches the state of rotor assembly initial unbalance, minimum, also while providing the angle of rotor unbalance value after optimization to position
Put and size, so as to next component assembling control initial unbalance, hand labor efficiency is greatly improved, be electromotor dress
Join there is provided the foundation for optimizing, sort method of manually weighing carries out blade arrangement and can not possibly complete.
Engine blade moment of mass measurement is the arrangement form for assembling to engine turbine, compressor rotor offer blade
Data foundation, it is ensured that engine turbine, compressor rotor can reach blade in assembling and most preferably arrange state and minimum not
Aequum.The measurement of leaf quality square and sequence work not only ensure that the balance quality of blade, also improve work efficiency, have
Help ensure the assembling quality of engine turbine and compressor rotor.Can expire in assembling for guarantee aero-turbine rotor
Sufficient design requirement, measures sequence to leaf weight square, and blade is pressed optimum balance status park, reduces and causes because of imbalance
Vibration.
Rotor assembly is constituted by wheel disc and some 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 is generally the inclined-plane of rule with wheel disc engagement tabs,
After assembling, both sides are all planes.The frock of measurement leaf quality square typically simulates the tenon tooth clamping blade tenon tooth of wheel disc, simultaneously fixed
Position, simultaneously adjusts compression with spring leaf, can complete clamping work of the blade on moment of mass instrument, it is ensured that leaf quality square is worth
Measurement.
People are highly desirable to obtain a kind of big leaf quality square measurement apparatus of the excellent complicated surface of technique effect.
Content of the invention
It is an object of the invention to provide a kind of big leaf quality square measurement apparatus of the excellent complicated surface of technique effect.
The big leaf quality square measurement apparatus of the complicated surface constitute as follows：Clamp nut 1, gland 2, screw rod 3, first are fixed
Position pin 4, the second alignment pin 5, attachment screw 6, measurement apparatus base 7, positioning cylinder 8, the first positioning boss 9 and the second convex
Platform 10；Wherein, measurement apparatus base 7 is connected on the locating surface of moment of mass measuring instrument by attachment screw 6, positioning cylinder 8
In the big leaf quality square in the hole of complicated surface, four screws 6 on measurement apparatus base 7 are tightened, is close to measurement apparatus base 7
The locating surface of moment of mass measuring instrument.First positioning boss 9 is fixedly connected on the left side bottom of measurement apparatus base 7, the second positioning
Boss 10 is fixedly connected on the right side of measurement apparatus base 7, and the second positioning boss 10 is higher than the first positioning boss 9, the first positioning
Pin 4 is fixedly connected on the right side of the first positioning boss 9, and the second alignment pin 5 is fixedly connected on the left side of the second positioning boss 10, spiral shell
Bar 3 is connected to the left side of the second positioning boss 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, it is ensured that gland not warpage during compression.Gland 2 and clamp nut 1 are attached to screw rod 3
On, the moment values zero of measurement apparatus on moment of mass instrument cannot such as be zeroed, moment values are returned by the counterweight for adjusting in moment of mass instrument
Zero, gland 2 and clamp nut 1 is then removed, blade is attached in measurement apparatus, so that two positioning boss of blade is adjacent to respectively
Alignment pin, lifts blade with handss and is at horizontal level, is press fit into blade tenon with gland 2 through the screw rod 3 in measurement apparatus
On the arc surface of head, adjustment gland 2 presses upper clamp nut 1 with tenon arc surface after fitting.Measurement leaf quality square value.
Turbine blade is that high hard material K465 essence casting blade connects into integral ring-shaped, turbine leaf using TLP diffusion welding (DW) connection
Piece is wide string large-scale blades, a length of 215mm in blade passage surface, and chord width is about 150mm, and aerofluxuss side is only 0.5mm, basin, the back of the body
It is complex-curved to tenon, is made up of one section of facet and two sections of arc surfaces, turbo blade will be entered before welding is diffused
Row claims moment of mass, the work of sequence, because blade does not have a well-regulated tenon, tenon basin, is dorsad complex-curved, measures moment of mass
Shi Yaoqiu blade center with moment of mass instrument measuring center in the same plane, carries out positioning and clamping because can not find orientable face,
Measurement apparatus design is highly difficult.And leaf quality relatively weighs 6Kg, the born biggest quality of existing moment of mass instrument is 10Kg, plus
Upper measurement apparatus weight is likely to the load-bearing limit beyond moment of mass instrument.Measurement apparatus weight must control within 4Kg, control
Quality processed proof strength again, when making Blade measuring, center of gravity is not sunk, and difficulty is very big, because being measured with irregular face clamping, surveys
After amount, whether result is accurately difficult to judge.A kind of this measurement apparatus structure, can stably fix turbo blade, difficulty action accomplishment square
Measurement work, by the accuracy of leaf three-dimensional model analysis measurement result.
According to the operation principle of moment of mass measuring instrument, fixture and moment of mass measuring instrument mating surface to vane centroid axial away from
The moment of mass arm of force of blade be should be plus moment of mass instrument and fixture mating surface to pivot distance Q from L2.But the barycenter per piece blade
Difference, measurement apparatus cannot take into account the centroid position per piece blade, and blade design figure will not also provide the radius of vane centroid,
But blade tenon bottom surface is given to engine center radius.When being commonly designed measurement apparatus, L2 value just press blade bottom surface to send out
Motivation center radius are calculated.The Q of moment of mass instrument a size of 125, blade locating surface to engine center distance is 168, so to survey
Amount device locating surface is to moment of mass instrument knife-edge part distance only 43, it is impossible to meet measurement apparatus clamping requirement.According to previous experiences,
Moment of mass measurement is general not to give setting, as long as the moment of mass value for obtaining in same state measurement, does not have shadow to vanes permutation
Ring, L2+Q numerical value not necessarily have to be just the same to electromotor axial distance with vane centroid.It is the number for measuring that the arm of force is different
According to corresponding multiple is accordingly expanded or shunk, the amount of unbalance of blade is not affected, do not affect vanes permutation result.Then regard and survey
Amount device design structure situation provides L2 value.
Blade is when moment of mass measurement is carried out, and because also having manufacturing procedure after blade mass metering square, blade is not end-state,
When now having two boss at blade tenon for processing, positioning is used.Leaf quality itself reaches 6Kg, and measurement apparatus are steady by blade
Fixed position, and cannot as conventional measurement devices clamping blade tenon, need to position on curved surface and compress.Blade inframarginal
Two boss for reserving are machining benchmarks, and size is relatively accurate, and measurement apparatus are positioned using the two faces, because being determined with plane
Position, employs the finger setting of two positioning, and alignment pin limits the false boss of a blade, and two alignment pins are by blade axial direction
Spacing.Bolt is passed through using the square opening at blade inframarginal, blade is pushed down with the curved surface gland of polyurethane, with clamp nut
Gland is compressed, makes blade circumferentially positioned.Because measurement apparatus quality will be tried one's best gently, so the main body of measurement apparatus adopts cast aluminium material
Material, only locating surface 45# steel.By measurement apparatus Weight control in the permission mass range of moment of mass instrument.Measurement apparatus with
It is cylindrical identical with other measurement apparatus with position of mounting hole that moment of mass instrument connects.
The big leaf quality square measurement apparatus submount material of the complicated surface adopts aluminium alloy, significantly reduces measurement apparatus
Overall weight, meets weight of equipment and limits requirement.The positioning to blade, cylinder axis are realized using two straight pins being staggeredly located
Two positioning cambered surface linear contact lay of line and blade tenon, are accurately positioned the axial location of blade, and two positioning tables limit the footpath of blade
To position.Measurement apparatus ensure that the accurate positioning of complicated surface blade in turn ensure that the reliability of measurement data.
The big leaf quality square measurement apparatus of the complicated surface are bold in innovation in the selection of materials and positioning form, base
Using aluminium alloy, alignment pin and locating surface adopt No. 20 steel, that is, ensure that the requirement of maximum weight, meet measurement apparatus again
Intensity.The positioning requirements of blade complicated surface, accurate positioning reliability have been adapted to using positioning finger setting.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation：
Fig. 1 is the big leaf quality square measurement apparatus front view of complicated surface；
Fig. 2 is the big leaf quality square measurement apparatus top view of complicated surface；
Fig. 3 is the big leaf quality square measurement apparatus right view of complicated surface.
Specific embodiment
Embodiment 1
The big leaf quality square measurement apparatus of the complicated surface constitute as follows：Clamp nut 1, gland 2, screw rod 3, first are fixed
Position pin 4, the second alignment pin 5, attachment screw 6, measurement apparatus base 7, positioning cylinder 8, the first positioning boss 9 and the second convex
Platform 10；Wherein, measurement apparatus base 7 is connected on the locating surface of moment of mass measuring instrument by attachment screw 6, positioning cylinder 8
In the big leaf quality square in the hole of complicated surface, four screws 6 on measurement apparatus base 7 are tightened, is close to measurement apparatus base 7
The locating surface of moment of mass measuring instrument.First positioning boss 9 is fixedly connected on the left side bottom of measurement apparatus base 7, the second positioning
Boss 10 is fixedly connected on the right side of measurement apparatus base 7, and the second positioning boss 10 is higher than the first positioning boss 9, the first positioning
Pin 4 is fixedly connected on the right side of the first positioning boss 9, and the second alignment pin 5 is fixedly connected on the left side of the second positioning boss 10, spiral shell
Bar 3 is connected to the left side of the second positioning boss 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, it is ensured that gland not warpage during compression.Gland 2 and clamp nut 1 are attached to screw rod 3
On, the moment values zero of measurement apparatus on moment of mass instrument cannot such as be zeroed, moment values are returned by the counterweight for adjusting in moment of mass instrument
Zero, gland 2 and clamp nut 1 is then removed, blade is attached in measurement apparatus, so that two positioning boss of blade is adjacent to respectively
Alignment pin, lifts blade with handss and is at horizontal level, is press fit into blade tenon with gland 2 through the screw rod 3 in measurement apparatus
On the arc surface of head, adjustment gland 2 presses upper clamp nut 1 with tenon arc surface after fitting.Measurement leaf quality square value.
Turbine blade is that high hard material K465 essence casting blade connects into integral ring-shaped, turbine leaf using TLP diffusion welding (DW) connection
Piece is wide string large-scale blades, a length of 215mm in blade passage surface, and chord width is about 150mm, and aerofluxuss side is only 0.5mm, basin, the back of the body
It is complex-curved to tenon, is made up of one section of facet and two sections of arc surfaces, turbo blade will be entered before welding is diffused
Row claims moment of mass, the work of sequence, because blade does not have a well-regulated tenon, tenon basin, is dorsad complex-curved, measures moment of mass
Shi Yaoqiu blade center with moment of mass instrument measuring center in the same plane, carries out positioning and clamping because can not find orientable face,
Measurement apparatus design is highly difficult.And leaf quality relatively weighs 6Kg, the born biggest quality of existing moment of mass instrument is 10Kg, plus
Upper measurement apparatus weight is likely to the load-bearing limit beyond moment of mass instrument.Measurement apparatus weight must control within 4Kg, control
Quality processed proof strength again, when making Blade measuring, center of gravity is not sunk, and difficulty is very big, because being measured with irregular face clamping, surveys
After amount, whether result is accurately difficult to judge.A kind of this measurement apparatus structure, can stably fix turbo blade, difficulty action accomplishment square
Measurement work, by the accuracy of leaf three-dimensional model analysis measurement result.
According to the operation principle of moment of mass measuring instrument, fixture and moment of mass measuring instrument mating surface to vane centroid axial away from
The moment of mass arm of force of blade be should be plus moment of mass instrument and fixture mating surface to pivot distance Q from L2.But the barycenter per piece blade
Difference, measurement apparatus cannot take into account the centroid position per piece blade, and blade design figure will not also provide the radius of vane centroid,
But blade tenon bottom surface is given to engine center radius.When being commonly designed measurement apparatus, L2 value just press blade bottom surface to send out
Motivation center radius are calculated.The Q of moment of mass instrument a size of 125, blade locating surface to engine center distance is 168, so to survey
Amount device locating surface is to moment of mass instrument knife-edge part distance only 43, it is impossible to meet measurement apparatus clamping requirement.According to previous experiences,
Moment of mass measurement is general not to give setting, as long as the moment of mass value for obtaining in same state measurement, does not have shadow to vanes permutation
Ring, L2+Q numerical value not necessarily have to be just the same to electromotor axial distance with vane centroid.It is the number for measuring that the arm of force is different
According to corresponding multiple is accordingly expanded or shunk, the amount of unbalance of blade is not affected, do not affect vanes permutation result.Then regard and survey
Amount device design structure situation provides L2 value.
Blade is when moment of mass measurement is carried out, and because also having manufacturing procedure after blade mass metering square, blade is not end-state,
When now having two boss at blade tenon for processing, positioning is used.Leaf quality itself reaches 6Kg, and measurement apparatus are steady by blade
Fixed position, and cannot as conventional measurement devices clamping blade tenon, need to position on curved surface and compress.Blade inframarginal
Two boss for reserving are machining benchmarks, and size is relatively accurate, and measurement apparatus are positioned using the two faces, because being determined with plane
Position, employs the finger setting of two positioning, and alignment pin limits the false boss of a blade, and two alignment pins are by blade axial direction
Spacing.Bolt is passed through using the square opening at blade inframarginal, blade is pushed down with the curved surface gland of polyurethane, with clamp nut
Gland is compressed, makes blade circumferentially positioned.Because measurement apparatus quality will be tried one's best gently, so the main body of measurement apparatus adopts cast aluminium material
Material, only locating surface 45# steel.By measurement apparatus Weight control in the permission mass range of moment of mass instrument.Measurement apparatus with
It is cylindrical identical with other measurement apparatus with position of mounting hole that moment of mass instrument connects.
The big leaf quality square measurement apparatus submount material of the complicated surface adopts aluminium alloy, significantly reduces measurement apparatus
Overall weight, meets weight of equipment and limits requirement.The positioning to blade, cylinder axis are realized using two straight pins being staggeredly located
Two positioning cambered surface linear contact lay of line and blade tenon, are accurately positioned the axial location of blade, and two positioning tables limit the footpath of blade
To position.Measurement apparatus ensure that the accurate positioning of complicated surface blade in turn ensure that the reliability of measurement data.
The big leaf quality square measurement apparatus of the complicated surface are bold in innovation in the selection of materials and positioning form, base
Using aluminium alloy, alignment pin and locating surface adopt No. 20 steel, that is, ensure that the requirement of maximum weight, meet measurement apparatus again
Intensity.The positioning requirements of blade complicated surface, accurate positioning reliability have been adapted to using positioning finger setting.
Claims (1)
1. big leaf quality square measurement apparatus of a kind of complicated surface, it is characterised in that：The big leaf quality square of the complicated surface is surveyed
Amount device constitutes as follows：Clamp nut (1), gland (2), screw rod (3), the first alignment pin (4), the second alignment pin (5), connection spiral shell
Nail (6), measurement apparatus base (7), positioning cylinder (8), the first positioning boss (9) and the second positioning boss (10)；Wherein, measure
Device pedestal (7) is connected on the locating surface of moment of mass measuring instrument by attachment screw (6), and positioning cylinder (8) is located at complex shape
The big leaf quality square in the hole in face, the first positioning boss (9) is fixedly connected on the left side bottom of measurement apparatus base (7), and second is fixed
Position boss (10) is fixedly connected on the right side of measurement apparatus base (7), and the second positioning boss (10) is higher than the first positioning boss
(9), the first alignment pin (4) is fixedly connected on the right side of the first positioning boss (9), and the second alignment pin (5) is fixedly connected on second
The left side of positioning boss (10), screw rod (3) is connected to the left side of the second positioning boss (10), and gland (2) passes through clamp nut (1)
It is connected on screw rod (3), the bottom surface radian of gland (2) is coincide with tested blade blade back radian.
Priority Applications (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 |
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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| Publication Number | Publication Date |
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| CN106441856A true CN106441856A (en) | 2017-02-22 |
| CN106441856B CN106441856B (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611046518.4A Active CN106441856B (en) | 2016-11-23 | 2016-11-23 | A kind of big leaf quality square measuring device of complicated surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| 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 |
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| 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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2016
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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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| CN106441856B (en) | 2018-12-14 |
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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 |
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