阅读说明：本技术 一种叶片叶型尺寸和叶尖尺寸的测量用夹具和测量方法 (A kind of the measurement fixture and measurement method of vane foil size and blade tip size ) 是由 金海龙 俞瑞昕 贺文庆 于 2019-08-12 设计创作，主要内容包括：本发明提供了一种叶片叶型尺寸和叶尖尺寸的测量用夹具,其能解决现有航空动叶叶片的叶型尺寸和叶尖尺寸的测量需要对每个叶片都在压力面采点建立测量基准,大批量测量时效率低下的问题。其包括底座、定位组件和夹紧组件,定位组件包括用于定位叶片榫头的压力面的压力面定位块,以及用于定位叶片榫头的背弧侧面的背弧侧定位块；夹紧组件包括顶针和内弧侧压紧杆；顶针由底座上的驱动机构一驱动并向上顶紧叶片的缘板肩膀面,使叶片榫头的压力面与压力面定位块贴紧；内弧侧压紧杆由底座上的驱动机构二驱动并压紧叶片榫头的内弧侧面,使叶片榫头的背弧侧面与背弧侧定位块贴紧。同时,本发明还提供了航空叶片叶型尺寸和叶尖尺寸的测量方法。(The present invention provides the measurement fixtures of a kind of vane foil size and blade tip size, the measurement needs of its blade profile size that can solve existing aviation movable vane blade and blade tip size establish measuring basis, the low problem of large quantities of measurement timeliness rates in pressure face sampling site to each blade.It includes pedestal, positioning component and clamping component, and positioning component includes the pressure face locating piece for the pressure face of locating blades tenon, and the back arc side positioning block of the back arc side for locating blades tenon；Clamping component includes thimble and inner arc side compression bar；Thimble is driven by the driving mechanism one on pedestal and is held out against upwards the listrium shoulder face of blade, is adjacent to the pressure face of blade tenon with pressure face locating piece；Inner arc side compression bar is driven by the driving mechanism two on pedestal and is compressed the inner arc side of blade tenon, is adjacent to the back arc side of blade tenon with back arc side positioning block.Meanwhile the present invention also provides the measurement methods of aerial blade blade profile size and blade tip size.)

1. the measurement fixture of a kind of vane foil size and blade tip size, it is characterised in that: it include pedestal, positioning component and Clamping component, the positioning component are fixedly mounted on the base, and the positioning component includes for locating blades tenon The pressure face locating piece of pressure face, and the back arc side positioning block of the back arc side for positioning the blade tenon；The folder Tight component is movably arranged on the positioning component, and the clamping component includes thimble and inner arc side compression bar；The thimble by Driving mechanism one on the pedestal drives and holds out against upwards the listrium shoulder face of blade, make the blade tenon pressure face and The pressure face locating piece is adjacent to；The inner arc side compression bar is driven by the driving mechanism two on the pedestal and compresses the leaf The inner arc side of piece tenon is adjacent to the back arc side of the blade tenon with the back arc side positioning block.

2. the measurement fixture of a kind of vane foil size and blade tip size according to claim 1, it is characterised in that: institute Stating pressure face locating piece includes the leading edge pressure face locating piece being oppositely arranged and exhaust side pressure face locating piece, the leading edge The upper inner of pressure face locating piece and the exhaust side pressure face locating piece is respectively equipped with the leading edge with the blade tenon The profiling positioning surface that pressure face and exhaust side pressure face shape are adapted, the leading edge pressure face locating piece and the exhaust side Pressure face locating piece fixes as one and is fixedly mounted on the base.

3. the measurement fixture of a kind of vane foil size and blade tip size according to claim 1, it is characterised in that: institute It states back arc side positioning block and is fixedly mounted on the rear side of the pressure face locating piece, and which is provided with for being bonded the blade tenon Back arc side positioning plane.

4. the measurement fixture of a kind of vane foil size and blade tip size according to claim 2, it is characterised in that: institute It states and has been enclosed cavity between leading edge pressure face locating piece and exhaust side pressure face locating piece, the cavity is located at institute It states below profiling positioning surface, is slided up and down in the cavity and be fitted with thimble sliding block, the both ends difference of the thimble sliding block Be fixedly installed with the thimble, the upper end difference clearance fit of two thimbles pass through the leading edge pressure face locating piece and Exhaust side pressure face locating piece is respectively used to hold out against positioned at the listrium shoulder face of the blade tenon two sides；It is described Driving mechanism one is vertical cylinder, and the vertical cylinder is fixedly mounted on the base, and the piston rod of the vertical cylinder is logical It crosses vertical link to be fixedly connected with the bottom of the thimble sliding block, for driving the thimble sliding block to move up and down.

5. the measurement fixture of a kind of vane foil size and blade tip size according to claim 4, it is characterised in that: two The top surface of a thimble is spherical.

6. the measurement fixture of a kind of vane foil size and blade tip size according to claim 4, it is characterised in that: institute It states inner arc side compression bar and is equipped with the compressed part to extend back in the front side and the upper end for being vertically provided at the pressure face locating piece, The compressed part is used to compress the inner arc side of the blade tenon；The bottom of the inner arc side compression bar is provided with what front and back penetrated through The middle part left and right sides of vertical slot, the inner arc side compression bar is respectively symmetrically provided with the vertical waist being connected to the vertical slot Shape hole is fixedly installed with compression rod bearing, the front end cooperation for compressing rod bearing on the leading flank of the pressure face locating piece It is inserted into the vertical slot, pin shaft one passes through the front end for compressing rod bearing and its both ends difference clearance fit is inserted into two institutes It states in vertical kidney slot；The driving mechanism two is lateral cylinder, and the lateral cylinder is fixedly mounted on positioned at the pressure face On the pedestal on rear side of locating piece, the piston rod of the lateral cylinder by transverse link pass through the pressure face locating piece with The lower end of the inner arc side compression bar is hinged.

7. the measurement fixture of a kind of vane foil size and blade tip size according to claim 6, it is characterised in that: institute It states and is provided with the vertical long hole that front and back penetrates through in vertical link, what the transverse link slidably cooperated passes through the vertical long hole, The lower end of the transverse link and the inner arc side compression bar is hinged by pin shaft two.

8. the measurement fixture of a kind of vane foil size and blade tip size according to claim 6, it is characterised in that: institute The trailing flank for stating compressed part is cambered surface.

9. using fixture of any of claims 1-8 to the measurement method of vane foil size and blade tip size, Be characterized in that: itself the following steps are included:

Above-mentioned fixture is fixed on the workbench of three-coordinates measuring machine by step 1, correction reference, by the standard sample of aerial blade Part Set and Positioning establishes measurement base according to the position of above-mentioned fixture on the table using three-coordinates measuring machine on above-mentioned fixture Conventional coordinates, and the blade profile size and blade tip size of measurement standard exemplar, by the actual value of the above measurement result and master body Comparison, if the difference of the actual value of the measurement result and master body of master body is not within an acceptable range, to measurement The frame of reference increases offset, then re-measures master body, repeats above operation, until the measurement result of master body with Within an acceptable range, measuring basis coordinate system at this time is the measuring basis after correcting to the difference of the actual value of master body Coordinate system；

Step 2, measurement blade are straight using three-coordinates measuring machine by aerial blade Set and Positioning to be measured on above-mentioned fixture Connect the blade profile size and blade tip size using the measuring basis coordinate system measurement aerial blade after correction.

Technical field

The present invention relates to aviation precision forged blade in-process measurement field, specially a kind of vane foil size and blade tip size Measurement fixture and measurement method.

Background technique

Aviation movable vane blade is the property of the key components and parts of aircraft engine, blade profile size and blade tip size to engine Energy influence is very big, so would generally detect totally blade profile size and blade tip size to movable vane blade in industry.It is adopted in industry at present Detection method are as follows: built using the first sampling site on blade tenon pressure face or datum level of three-coordinates measuring machine and repeatedly fitting After vertical measuring basis, then blade profile size and blade tip size are measured, but the method needs build each blade in pressure face sampling site Vertical measuring basis, establishes that the time required for measuring basis is long, and large quantities of measurement timeliness rates are low.

Summary of the invention

The measurement of blade profile size and blade tip size for existing aviation movable vane blade is needed to each blade in pressure Face sampling site establishes measuring basis, and the low technical problem of large quantities of measurement timeliness rates, the present invention provides a kind of vane foil rulers Very little and blade tip size measurement fixture, can make the blade of clamping on it measuring basis having the same, no longer need to every A blade individually establishes measuring basis, greatly improves measurement efficiency when large quantities of measurements, meanwhile, the present invention also provides aviations The measurement method of vane foil size and blade tip size.

Its technical solution is such that

A kind of measurement fixture of vane foil size and blade tip size, it is characterised in that: it includes pedestal, positioning component and folder Tight component, the positioning component are fixedly mounted on the base, and the positioning component includes the pressure for locating blades tenon The pressure face locating piece in power face, and the back arc side positioning block of the back arc side for positioning the blade tenon；The clamping Component is movably arranged on the positioning component, and the clamping component includes thimble and inner arc side compression bar；The thimble is by institute The listrium shoulder face that the driving mechanism one on pedestal drives and holds out against blade upwards is stated, pressure face and the institute of the blade tenon are made Pressure face locating piece is stated to be adjacent to；The inner arc side compression bar is driven by the driving mechanism two on the pedestal and compresses the blade The inner arc side of tenon is adjacent to the back arc side of the blade tenon with the back arc side positioning block.

It is further characterized by:

The pressure face locating piece includes the leading edge pressure face locating piece being oppositely arranged and is vented side pressure face locating piece, described The upper inner of leading edge pressure face locating piece and the exhaust side pressure face locating piece is respectively equipped with and the blade tenon Leading edge pressure face and the adaptable profiling positioning surface of exhaust side pressure face shape, the leading edge pressure face locating piece and described Exhaust side pressure face locating piece fixes as one and is fixedly mounted on the base.

The back arc side positioning block is fixedly mounted on the rear side of the pressure face locating piece, and which is provided with for being bonded State the positioning plane of the back arc side of blade tenon.

It has been enclosed cavity between the leading edge pressure face locating piece and exhaust side pressure face locating piece, it is described Cavity is located at below the profiling positioning surface, slides up and down in the cavity and is fitted with thimble sliding block, the thimble sliding block Both ends be fixedly installed with the thimble respectively, the upper end difference clearance fit of two thimbles passes through the leading edge pressure Face locating piece and exhaust side pressure face locating piece are respectively used to hold out against the listrium shoulder positioned at the blade tenon two sides Wing face；The driving mechanism one is vertical cylinder, and the vertical cylinder is fixedly mounted on the base, the vertical cylinder Piston rod is fixedly connected by vertical link with the bottom of the thimble sliding block, for driving the thimble sliding block to move up and down.

The top surface of two thimbles is spherical.

The inner arc side compression bar is in the front side for being vertically provided at the pressure face locating piece and the upper end is equipped with and prolongs backward The compressed part stretched, the compressed part are used to compress the inner arc side of the blade tenon；It opens the bottom of the inner arc side compression bar The middle part left and right sides of the vertical slot for having front and back to penetrate through, the inner arc side compression bar is respectively symmetrically provided with and the vertical slot The vertical kidney slot of connection is fixedly installed with compression rod bearing, the compressor arm branch on the leading flank of the pressure face locating piece The vertical slot is inserted into the front end cooperation of seat, and pin shaft one passes through the front end for compressing rod bearing and its both ends is distinguished gap and matched It closes in two vertical kidney slots of insertion；The driving mechanism two is lateral cylinder, and the lateral cylinder is fixedly mounted in place On the pedestal on rear side of the pressure face locating piece, the piston rod of the lateral cylinder passes through the pressure by transverse link Power face locating piece and the lower end of the inner arc side compression bar are hinged.

The vertical long hole that front and back penetrates through is provided in the vertical link, what the transverse link slidably cooperated passes through described The lower end of vertical long hole, the transverse link and the inner arc side compression bar is hinged by pin shaft two.

The trailing flank of the compressed part is cambered surface.

Using above-mentioned fixture to the measurement method of aerial blade blade profile size and blade tip size, it is characterised in that: it includes Following steps:

Above-mentioned fixture is fixed on the workbench of three-coordinates measuring machine by step 1, correction reference, by the standard sample of aerial blade Part Set and Positioning establishes measurement base according to the position of above-mentioned fixture on the table using three-coordinates measuring machine on above-mentioned fixture Conventional coordinates, and the blade profile size and blade tip size of measurement standard exemplar, by the actual value of the above measurement result and master body Comparison, if the difference of the actual value of the measurement result and master body of master body is not within an acceptable range, to measurement The frame of reference increases offset, then re-measures master body, repeats above operation, until the measurement result of master body with Within an acceptable range, measuring basis coordinate system at this time is the measuring basis after correcting to the difference of the actual value of master body Coordinate system；

Step 2, measurement blade are straight using three-coordinates measuring machine by aerial blade Set and Positioning to be measured on above-mentioned fixture Connect the blade profile size and blade tip size using the measuring basis coordinate system measurement aerial blade after correction.

The beneficial effects of the present invention are:

Fixture of the invention can realize accurate positionin and clamping to blade using positioning component and clamping component automatically, dress It presss from both sides quick, reliable and stable, it is ensured that measuring basis having the same after each blade clamping；When first measurement, standard sample is utilized After part completes a correction reference, can direct measure batch blade blade profile size and blade tip size, effective saving conventional measurement The pressure face sampling site of each part establishes the time of measuring basis in amount mode, to greatly improve blade profile size and blade tip size Measurement efficiency.

Detailed description of the invention

Fig. 1 is the main view of fixture of the invention；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the cross-sectional view of the line A-A along Fig. 1；

Fig. 4 is the cross-sectional view of the line B-B along Fig. 2；

Fig. 5 is the overall structure diagram of fixture of the invention；

Fig. 6 is the overall structure diagram of blade.

Appended drawing reference: 1- upper plate；2- lower plate；3- pedestal upright post；4- pressure face locating piece；5- carries on the back arc side positioning block； 6- thimble；7- inner arc side compression bar；8- leading edge pressure face locating piece；9- is vented side pressure face locating piece；10- profiling positioning Face；11- soket head cap screw one；12- cylindrical positioning pins；13- soket head cap screw two；14- positions plane；15- cavity；16- thimble Sliding block；The vertical cylinder of 17-；18- vertical link；19- soket head cap screw three；20- compressed part；The vertical slot of 21-；The vertical waist of 22- Shape hole；23- compresses rod bearing；24- pin shaft one；25- lateral cylinder；26- lateral cylinder bottom plate；27- transverse link；28- is vertical Long hole；29- pin shaft two；30- machining benchmark；50- blade；51- blade tenon；52- leading edge pressure face；53- is vented side pressure Face；54- listrium shoulder face；55-inner arc sides.

Specific embodiment

See Fig. 1 to Fig. 6, the measurement fixture of a kind of vane foil size and blade tip size of the invention comprising pedestal, Positioning component and clamping component, pedestal include upper plate 1, lower plate 2 and pedestal upright post 3, and positioning component is fixedly mounted on pedestal Upper plate 1 on, positioning component includes the pressure face locating piece 4 for the pressure face of locating blades tenon 51, and for fixed The back arc side positioning block 5 of the back arc side of position blade tenon 51；Clamping component is movably arranged on positioning component, clamping component packet Include thimble 6 and inner arc side compression bar 7；Thimble 6 is driven by the driving mechanism one on pedestal and holds out against the listrium shoulder of blade 50 upwards Wing face 54 is adjacent to the pressure face of blade tenon 51 with pressure face locating piece 4；Inner arc side compression bar 7 is by the driving machine on pedestal Structure two drives and compresses the inner arc side 55 of blade tenon 51, pastes the back arc side of blade tenon 51 and back arc side positioning block 5 Tightly.

See that Fig. 3 to Fig. 4, pressure face locating piece 4 include the leading edge pressure face locating piece 8 being oppositely arranged and exhaust side pressure Face locating piece 9, leading edge pressure face locating piece 8 and the upper inner for being vented side pressure face locating piece 9 are respectively equipped with and blade tenon The adaptable profiling positioning surface 10 of first 51 leading edge pressure face 52 and exhaust 53 shape of side pressure face, the positioning of leading edge pressure face Block 8 and exhaust side pressure face locating piece 9 are fixed as one by soket head cap screw 1 and cylindrical positioning pins 12, and are passed through respectively Soket head cap screw 2 13 is fixedly mounted on the upper plate 1 of pedestal.It is designed in this way, convenient for the processing of pressure face locating piece, and can Ensure the accurate positionin to the pressure face of blade tenon.

See Fig. 2 to Fig. 3, the both ends of back arc side positioning block 5 pass through screw respectively and are fixedly mounted on the positioning of leading edge pressure face The middle inside of the upper back of block 8 and exhaust side pressure face locating piece 9, back arc side positioning block 5 is equipped with for being bonded blade tenon The positioning plane 14 of first 51 back arc side.It is designed in this way, structure is simple, is easily installed and processes.

See Fig. 4, is enclosed cavity 15 between leading edge pressure face locating piece 8 and exhaust side pressure face locating piece 9, it is empty Chamber 15 is located at 10 lower section of profiling positioning surface, slides up and down in cavity 15 and is fitted with thimble sliding block 16, and the two of thimble sliding block 16 End is mounted by means of screws with thimble 6 respectively, and the top surface of two thimbles 6 is spherical, and the upper end of two thimbles 6 is distinguished gap and matched It is suitable to cross leading edge pressure face locating piece 8 and exhaust side pressure face locating piece 9, it is respectively used to hold out against positioned at blade tenon 51 into row The listrium shoulder face 54 of gas two sides；Driving mechanism one is vertical cylinder 17, and the upper plate 1 of pedestal is arranged in under in vertical cylinder 17 It between bottom plate 2 and is fixedly mounted on upper plate 1, the piston rod upper end of vertical cylinder 17 is coaxially connected with vertical link 18, erects It is fixedly connected to the upper end of connecting rod 18 with the bottom of thimble sliding block 16 by soket head cap screw 3 19, vertical cylinder 17 is for driving Thimble sliding block 16 moves up and down.Be designed in this way, under the driving of vertical cylinder, two thimbles can automatically, quickly hold out against leaf The listrium shoulder face of piece tenon two sides.

See Fig. 1 to Fig. 4, inner arc side compression bar 7 be in be vertically provided at pressure face locating piece 4 front side and the upper end be equipped with to The trailing flank of the compressed part 20 extended afterwards, compressed part 20 is cambered surface, for compressing the inner arc side 55 of blade tenon 51；Inner arc side The bottom of compressor arm 7 is provided with the vertical slot 21 that front and back penetrates through, and is respectively symmetrically provided at left and right sides of the middle part of inner arc side compression bar 7 The vertical kidney slot 22 being connected to vertical slot 21 is fixedly installed on the leading flank of pressure face locating piece 4 and compresses rod bearing 23, Vertical slot 21 is inserted into the front end cooperation for compressing rod bearing 23, and pin shaft 1 passes through the front end for compressing rod bearing 23 and its both ends point Other clearance fit is inserted into two vertical kidney slots 22；Driving mechanism two is lateral cylinder 25, after being located at pressure face locating piece 4 Lateral cylinder bottom plate 26 is fixedly installed on the upper plate 1 of side, lateral cylinder 25 is fixedly mounted on lateral cylinder bottom plate 26, horizontal It is coaxially connected with transverse link 27 to the piston rod of cylinder 25, the vertical long hole 28 that front and back penetrates through is provided in vertical link 18, it is horizontal What is slidably cooperated to connecting rod 27 passes through vertical long hole 28, and the front end of transverse link 27 and the lower end of inner arc side compression bar 7 pass through Pin shaft 2 29 is hinged.Be designed in this way, under the driving of lateral cylinder, inner arc side compression bar can automatically, quickly rotate compression or The inner arc side of blade tenon is unclamped, and structure is compact to design, easy to process and assembling.

Spherical structure in Fig. 4 on leading edge pressure face locating piece 8 is machining benchmark 30.

It is of the invention using above-mentioned fixture to the measurement method of aerial blade blade profile size and blade tip size comprising it is following Step:

Above-mentioned fixture is fixed on the workbench of three-coordinates measuring machine by step 1, correction reference, by the standard sample of aerial blade Part Set and Positioning establishes measurement base according to the position of above-mentioned fixture on the table using three-coordinates measuring machine on above-mentioned fixture Conventional coordinates, and the blade profile size and blade tip size of measurement standard exemplar, by the actual value of the above measurement result and master body Comparison, if the difference of the actual value of the measurement result and master body of master body is not within an acceptable range, to measurement The frame of reference increases offset, then re-measures master body, repeats above operation, until the measurement result of master body with The difference of the actual value of master body within an acceptable range, to offset the foozle and rigging error of the fixture, at this time Measuring basis coordinate system is the measuring basis coordinate system after correcting；

Step 2, measurement blade are straight using three-coordinates measuring machine by aerial blade Set and Positioning to be measured on above-mentioned fixture Connect the blade profile size and blade tip size using the measuring basis coordinate system measurement aerial blade after correction.