CN108489437A - Multiple material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture - Google Patents
Multiple material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture Download PDFInfo
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- CN108489437A CN108489437A CN201810133328.9A CN201810133328A CN108489437A CN 108489437 A CN108489437 A CN 108489437A CN 201810133328 A CN201810133328 A CN 201810133328A CN 108489437 A CN108489437 A CN 108489437A
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- support column
- pedestal
- locating piece
- reinforcing
- dimensional coordinates
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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Abstract
The invention discloses a kind of multiple material blade inlet edge titanium alloys to reinforce side three-dimensional coordinates measurement fixture, fixture includes cuboid pedestal, the top of pedestal along reinforce side trend, from reinforce while wide end set gradually be useful for reinforce while carry out clamping and fixed locating piece, the first support column, positioning pin and the second support column；Wherein, locating piece includes the locating piece fitted closely and auxiliary positioning block, and auxiliary positioning block and the plane normal direction that locating piece coordinates are vertical with base upper surface normal direction, and parallel with the normal line of butt end direction for reinforcing hem width end；The outer circumference face of positioning pin and reinforcement side bottom edge outer mold surface concave portion any point are tangent, solve the problems, such as that above-mentioned material blade inlet edge titanium alloy reinforcement side of answering in the prior art can not be clamped.
Description
【Technical field】
The invention belongs to machinery manufacturing technology fields, and in particular to a kind of multiple material blade inlet edge titanium alloy reinforcement three coordinate of side
Measured material.
【Background technology】
Currently, the development of large aircraft receives the great attention of every country, needed for engine technology at
For the important embodiment of national science and technology industrial level.Big power plant of the Bypass Ratio Turbofan Engine as large aircraft is large-scale
One of core technology of aircraft determines that can large aircraft be succeeded in developing to a certain extent.Do not changing distribution engine
Under the premise of, it is to realize the important technical of engine advance using new material and innovation structure scheme.Composite material has
The incomparable excellent mechanical properties of metal material, the application in aero-engine can utmostly meet big bypass ratio
The low maintenance cost of engine, the demand of low noise, low consumption oil cut rate, high thrust-weight ratio.And fan blade is big bypass ratio turbofan starts
One of most important component of machine, for main thrust from the cold air for flowing through by-pass air duct, bigger bypass ratio correspondingly-sized is bigger
Fan blade.In addition, fan section quality accounts for about the 30%-35% of engine gross mass according to statistics, reducing fan section quality is
Improve the effective means of thrust-weight ratio.Therefore, it is that engine increases using size bigger and the lighter composite material fan blade of quality
The unique channel of big bypass ratio and loss of weight.Compared with conventional titanium alloy blade, composite material fan blade makes engine performance
It is more excellent, more efficient, there is superior anti-electric shock performance and damage tolerance ability, but disadvantage is that its anti-foreign object is hit
Hit that ability is weaker, easily layering, corrosion resistance are poor when rotating at high speed on intake and exhaust side.To solve this problem, metal can be used
Piece (such as titanium alloy) or protective case protect its leading edge (leading edge), this method can be such that foreign object damage energy quickly passes
It passs and dissipates, so that external impact is overcome can be uniformly transmitted on polymer matrix composites fan blade matrix.These installations
In the up-front protective case of composite material fan blade or sheet metal, it is referred to as multiple material blade inlet edge titanium alloy and reinforces side.
Multiple material blade inlet edge titanium alloy reinforcement side structure is extremely complex, and bilateral change in wall is thin and type face is that space is freely bent
Face, bending is big, and required precision is high, and dual thin wall, long narrow deep chamber constitute complicated restraining structure.It is closed in multiple material blade inlet edge titanium
Gold is reinforced in the course of receiving on side, is a very important index with the degree that is consistent of model, therefore, to multiple material blade inlet edge titanium
The finished product progress three-dimensional coordinates measurement that alloy reinforces side is necessary.And before these above-mentioned complicated structures give multiple material blade
The three-dimensional coordinates measurement that edge titanium alloy reinforces side proposes many technical barriers.For example, thin-walled can not be clamped, reverse free form surface greatly
It is difficult to constrained, is difficult to determine fixed origin and benchmark etc..
【Invention content】
The object of the present invention is to provide a kind of multiple material blade inlet edge titanium alloys to reinforce side three-dimensional coordinates measurement fixture, in solution
It states and answers the problem of material blade inlet edge titanium alloy reinforcement side can not be clamped in the prior art.
The present invention uses following technical scheme：A kind of multiple material blade inlet edge titanium alloy reinforcement side three-dimensional coordinates measurement fixture, folder
Tool includes cuboid pedestal, and the top of pedestal sets gradually from the wide end on reinforcement side and is useful for pair along the trend for reinforcing side
Reinforce side and carries out clamping and fixed locating piece, the first support column, positioning pin and the second support column；
Wherein, locating piece includes the locating piece fitted closely and auxiliary positioning block, and auxiliary positioning block coordinates with locating piece
Plane normal direction is vertical with base upper surface normal direction, and parallel with the normal line of butt end direction for reinforcing hem width end；Positioning pin
Outer circumference face and reinforce side bottom edge outer mold surface concave portion any point it is tangent.
Further, the length of pedestal, which is more than or equal to, reinforces the 30% of edge lengths, and width, which is more than or equal to, reinforces hem width end
The thickness of full-size, pedestal is more than or equal to 5mm.
Further, the first support column and the second support intercolumniation are not less than the 30% of reinforcement edge lengths, the first support column
Include the cylinder and round platform being vertically connected with the second support column, the radius of cylinder is not less than 10mm, circle not less than 10mm height
Radius is identical as cylindrical radius on platform, and frustum cone height is more than the maximum height difference for reinforcing bottom profiled curve under the working view of side.
Further, the column top of the top of the first support column and the second support column is both provided with locating slot, and two fixed
Position slot while with reinforcing all having and reinforcing at position contact on the outside of adaptable inner mold.
Further, size unilateral amplification on the basis of the theoretical amount of opening for reinforcing side of opening the widest part of locating slot
5mm is hereinafter, longitudinal depth of locating slot is >=10mm.
Further, the verticality of the upper surface of the mating surface and pedestal of locating piece and auxiliary positioning block is relative on pedestal
Surface keeps error to be less than or equal to spend, and the plane runout error of the mating surface of locating piece and auxiliary positioning block is less than 0.5mm.
Second of technical solution that the present invention uses is a kind of multiple material blade inlet edge titanium alloy reinforcement side three-dimensional coordinates measurement folder
The design method of tool, implements according to the following steps：
Step 1, design pedestal：
It will reinforce side opening upwards to be placed in above pedestal, and choose base upper surface any point as origin, setting adds
The meridian direction on strong side is X to the opening direction for reinforcing side is Z-direction, and coordinate system is defined according to cartesian coordinate system；With X
Xiang Weichang, Y-direction define the rectangle upper surface of pedestal for width, which is in working condition down and three-dimensional coordinates measurement
The parallel face of machine worktable；
Step 2, Design Orientation part：
Locating piece is set to pedestal at the position for reinforcing side end portion, and locating piece includes the locating piece fitted closely and auxiliary
Locating piece, the verticality of the upper surface of the mating surface and pedestal of locating piece and auxiliary positioning block is helped to be kept relative to base upper surface
Error is less than or equal to degree；The plane runout error of the mating surface of locating piece and auxiliary positioning block is less than 0.5mm；Auxiliary positioning block with
The plane normal direction of locating piece cooperation is vertical with base upper surface normal direction, and with the normal line of butt end direction at reinforcement hem width end
It is parallel；Locating piece is bonded completely with the plane that auxiliary positioning block coordinates, and plane runout error is less than 0.5mm；
Step 3, design support column：
3.1) interval the first support column of setting and the second support column on pedestal, the first support column and the setting of the second support column
In the both sides for reinforcing side, for spacing not less than reinforcing the 30% of edge lengths, the first support column and the second support column, which are set to, reinforces side
It is not required to below the section of detection；
3.2) Design Orientation slot：
Behind the position for determining the first support column and the second support column, located respectively according to the first support column and the second support column
The corresponding theoretical model for reinforcing side shape separately designs locating slot, the bottom sideline of locating slot and the reason for reinforcing side outer profile
Be completely superposed by model, size unilateral amplification 5mm on the basis of reinforcing side theory amount of opening of opening the widest part of locating slot with
Under, longitudinal depth >=10mm of locating slot；
Step 4, Design Orientation pin：
Positioning pin is arranged on reinforcing contour line of the side with respect to evagination, outside the outer circumference face and reinforcement side bottom edge of positioning pin
The tangent position for reinforcing side with constraint in type face concave portion any point.
Further, the 30% of the length of pedestal >=reinforcement edge lengths, the maximum width on width >=reinforcement side, according to pedestal
The length and width having had determined that are more than or equal to 5mm to calculate the thickness of pedestal.
Further, the first support column and the second support column include the cylinder and round platform being vertically connected with, the radius of cylinder
It is not less than 10mm not less than 10mm height, radius is identical as cylindrical radius on round platform, and frustum cone height, which is more than, reinforces side working view
The maximum height difference of lower bottom profiled curve.
Further, positioning pin is designed as cylinder with the contact-segment for reinforcing side, positioning pin is set with base contacts part
It is calculated as round platform, positioning pin is connected with pedestal by cylindrical pins transition.
The beneficial effects of the invention are as follows：
1. good positioning effect.If definition reinforcement edge lengths direction is X to vertical direction is Z-direction, true with cartesian coordinate system
Determine Y-direction.At this point, locating piece can limit X to translation freedoms and the rotary freedom of Y-direction, locating slot can limit Y-direction and Z-direction
Translation freedoms and X to the rotary freedom with Z-direction.Final 6 degree of freedom for reinforcing side are completely restricted, and are reinforced side and are existed
Position in fixture is now uniquely determined.
2. benchmark centering is fast.It needs to find a frame of reference before three coordinate measuring machine work, it need to be according to two mutually
It is vertical while and the two while the plane that is constituted determine the frame of reference.Therefore, pedestal is designed as cuboid, utilizes it
In one group of mutually perpendicular two side and plane can fast and accurately search out the frame of reference.
3. it is few to measure interference.A part for the locating slot that only support column is opened in scheme has package form with side is reinforced
Contact only taken up the minimum part for reinforcing side for fixed and since the characteristics of reinforcing side locating slot is smaller and shallower
Position, all exposed and measuring route with three coordinate measuring machine in remaining part is almost without any interference.
【Description of the drawings】
Fig. 1 is the main view broken section that a kind of multiple material blade inlet edge titanium alloy of the present invention reinforces side three-dimensional coordinates measurement fixture
Figure；
Fig. 2 is the working condition main view that a kind of multiple material blade inlet edge titanium alloy of the present invention reinforces side three-dimensional coordinates measurement fixture
Figure；
Fig. 3 is that a kind of working condition that multiple material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture of the present invention is overlooked
Figure；
Fig. 4 is that a kind of multiple material blade inlet edge titanium alloy of the present invention is reinforced when the support column of three-dimensional coordinates measurement fixture is with reinforcing
Mated condition schematic diagram；
Fig. 5 reinforces for a kind of multiple material blade inlet edge titanium alloy of the present invention in pin and the reinforcement of three-dimensional coordinates measurement fixture
Mated condition schematic diagram；
Fig. 6 is that a kind of multiple material blade inlet edge titanium alloy of the present invention reinforces knot when reinforcing being clamped in three-dimensional coordinates measurement fixture
Structure schematic diagram.
Wherein, 1. pedestal, 2. locating pieces, 3. auxiliary positioning blocks, 4. first support columns, 5. positioning pins, 6. second support columns,
7. reinforcing side.
【Specific implementation mode】
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
The present invention provides a kind of multiple material blade inlet edge titanium alloys to reinforce side three-dimensional coordinates measurement fixture.As shown in fig. 6, reinforcing
Side 7 is big torsion strip structure, reinforces 7 trend when 7 upper edges are reinforced and offers deep Vee hull slot, reinforces deep Vee hull slot on side 7
The larger one end of opening angle is wide end, and the smaller one end of deep Vee hull channel opening angle is narrow end, and the end face for reinforcing 7 wide end of side is
Plane.
As shown in Figure 1-Figure 3, fixture includes cuboid pedestal 1, and the upper surface of pedestal 1 adds certainly along the trend for reinforcing side 7
The strong wide end while 7, which rises, to be set gradually when being useful for reinforcing 7 and carries out clamping and fixed locating piece, the first support column 4, positioning pin
5 and second support column 6, the designing points of fixture it is as follows：
One, the length of pedestal 1, which is more than or equal to, reinforces the 30% of 7 length of side, and width is more than or equal to the maximum for reinforcing 7 wide end of side
The thickness of size, pedestal 1 is more than or equal to 5mm.
Two, the first support column 4 and the second support column 6 are set to the both sides for reinforcing side, and spacing is not less than reinforcement edge lengths
30%, which refers to the air line distance between the first support column 4 and the two revolving body axle center of the second support column 6, i.e., minimum
Distance.First support column 4 and the second support column 6, which are set to, reinforces the section lower section that side 7 is not required to detection；First support column 4 and
Two support columns 6 include the cylinder and round platform that are vertically connected with, and the radius of cylinder is not less than 10mm not less than 10mm height, on round platform
Radius is identical as cylindrical radius, and frustum cone height is more than the maximum height difference for reinforcing bottom profiled curve under the working view of side；Work regards
Lower figure is the angle for reinforcing side opening upwards.
The top of first support column 4 and the top of the second support column 6 are both provided with locating slot, two locating slots with reinforcement
The adaptable inner mold in 7 outsides when all having and reinforce at the position of 7 contacts, locating slot is it is ensured that its bottom sideline and reinforcement side
Theoretical model be completely superposed, ensure fixture with reinforce side accurate fit, the size of opening the widest part of locating slot is to reinforce
For unilateral amplification 5mm on the basis of the theory amount of opening of side hereinafter, the bottom size of locating slot does not amplify, i.e., single side wall carries out 0-5mm
Uneven amplification, longitudinal depth of locating slot is >=10mm.
Three, locating piece can only position the wide end for reinforcing side 7, and two end faces of wide end are in a plane, it is possible to use
Plane positioning, two end faces of narrow end are not necessarily plane nor can not centainly position in a plane.Locating piece includes
The upper surface of the mating surface and pedestal 1 of the locating piece 2 and auxiliary positioning block 3 fitted closely, locating piece 2 and auxiliary positioning block 3
Verticality keeps error to be less than or equal to 1 degree relative to base upper surface；The plane of the mating surface of locating piece 2 and auxiliary positioning block 3
Runout error is less than 0.5mm；The plane normal direction that auxiliary positioning block 3 coordinates with locating piece 2 and 1 surface normal direction of pedestal
Vertically, and it is parallel with the normal line of butt end direction of 7 wide end side of side is reinforced；Locating piece 2 need to ensure to coordinate with auxiliary positioning block 3 flat
Face is bonded completely, and plane runout error is less than 0.5mm.
Locating piece 2 is to be positioned with the end face for reinforcing side 7, and auxiliary positioning block 3 is to ensure the positioning surface of locating piece 2
Verticality.Preferred orientation block 2 is positioned such that block 2 and adds close to the outside of pedestal, auxiliary positioning block 3 close to the inside of pedestal 1
The positioning surface and locating piece 2 on strong side 7 are overlapped with the face that auxiliary positioning block 3 coordinates, and locating effect is best.
Four, the outer circumference face of positioning pin 5 and reinforcement side bottom edge outer mold surface concave portion any point are tangent.Locating slot because
There are gap so can not ensure that Complete Bind reinforces side 7, the setting of positioning pin 5 can constrain the position for reinforcing side 7.
The present invention provides the design methods that a kind of multiple material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture, specifically
It is as follows：
Step 1, design pedestal 1：
It will reinforce 7 opening upwards of side and be placed in 1 top of pedestal, choose 1 upper surface any point of pedestal as origin, origin
It is preferred that the angle point of pedestal 1, center of circle of location hole drilled out etc..The meridian direction that reinforcement side 7 is arranged is X to reinforcement side 7
Opening direction is Z-direction, and coordinate system is defined according to cartesian coordinate system；Using X to for length, Y-direction the rectangular of pedestal is defined as width
Shape upper surface, the rectangle upper surface are in working condition down the face parallel with three-dimensional coordinates measurement machine worktable.
The 30% of the length of pedestal 1 >=reinforcement edge lengths, the maximum width on width >=reinforcement side, has determined that according to pedestal 1
Good length and width, to calculate the thickness of pedestal 1.According to the rigidity of bottom plate 1 come design thickness, too thin rigidity is too poor, is tied when calculating
When fruit is less than 5mm, thickness selects 5mm, is then actual (real) thickness with numerical value after calculating when result of calculation is more than 5mm.
Step 2, Design Orientation part：
First, it according to Position Design locating piece 2 of the side with respect to pedestal 1 is reinforced, to ensure the accurate positioning of locating piece 2, needs
Auxiliary positioning block 3 is added.
Locating piece is set to pedestal 1 at the position for reinforcing 7 end of side, and locating piece includes the locating piece 2 fitted closely
With auxiliary positioning block 3, the verticality of the mating surface of locating piece 2 and auxiliary positioning block 3 and the upper surface of pedestal 1 is relative on pedestal
Surface keeps error to be less than or equal to 1 degree；The plane runout error of the mating surface of locating piece 2 and auxiliary positioning block 3 is less than 0.5mm,
Blending bolt is connect with auxiliary positioning block 3.The plane normal direction that auxiliary positioning block 3 coordinates with locating piece 2 and 1 upper surface of pedestal
Normal direction is vertical, and parallel with the normal line of butt end direction of 7 wide end of side is reinforced.It will after the mating surface for determining auxiliary positioning block
Auxiliary positioning block 3 is positioned with pin and pedestal 1, and blending bolt is connected with pedestal 1.
Step 3, design support column：
3.1) interval the first support column 4 of setting and the second support column 6, the first support column 4 and the second support column on pedestal 1
6 are set to the both sides for reinforcing side, and not less than reinforcing the 30% of edge lengths, the first support column 4 and the second support column 6 are set to spacing
Reinforce side 7 to be not required to below the section of detection；First support column 4 and the second support column 6 include the cylinder and round platform being vertically connected with,
The radius of cylinder is not less than 10mm not less than 10mm height, and radius is identical as cylindrical radius on round platform, and frustum cone height, which is more than, to be reinforced
The maximum height difference of bottom profiled curve under the working view of side.
3.2) Design Orientation slot：
Behind the position for determining the first support column 4 and the second support column 6, divided according to the first support column 4 and the second support column 6
The corresponding theoretical model for reinforcing side shape in other places separately designs locating slot, locating slot it is ensured that its bottom sideline with reinforce side
Theoretical model be completely superposed, ensure fixture with reinforce side accurate fit, the size of opening the widest part of locating slot is to reinforce
For unilateral amplification 5mm on the basis of the theory amount of opening of side hereinafter, the bottom size of locating slot does not amplify, i.e., single side wall carries out 0-5mm
Uneven amplification.Longitudinal depth of locating slot is >=10mm.The bottom of slot must with reinforce that side 7 is completely the same to be put
Greatly, the first support column 4 and the second support column 6 are connected firmly with pedestal 1 with bolt, then processes two respectively on multi-axis NC Machine Tools
A locating slot, and finally determine position and the size of the first support column 4 and the second support column 6.
As shown in figure 4, need to carry out certain uneven amplification to the side wall of locating slot ensures to reinforce side in process
Have when micro-deformation not to have excessive chucking power, the first support column 4 to be located at positioning by locating slot with side is reinforced after placement
The part connecting below slot and with pedestal 1 is designed as round platform to ensure 4 rigidity of support column.
Step 4, Design Orientation pin：
By learning above, since there are surpluses for locating slot, to ensure to reinforce the accurate positionin on side, addition positioning pin 5.Such as figure
Shown in 5, positioning pin 5 is arranged on reinforcing contour line of the side 7 with respect to evagination, and to ensure positioning pin 5, only there are one portions with side is reinforced
Dividing has contact to ensure the accurate positionin to reinforcing side.
To ensure 5 rigidity of positioning pin and robustness, positioning pin 5 is designed as cylinder with the contact-segment for reinforcing side 7, it is fixed
Position pin 5 is designed as round platform with 1 contact portion of pedestal, moreover, for convenience of multiple bearing, positioning pin 5 passes through cylindrical pins with pedestal 1
Transition is connected, installation easy to disassemble.
To sum up, as shown in Figure 1, 2, each part dimension and rigging position of measured material can finally be determined.
When the reinforcement of the present invention is when three-dimensional coordinates measurement fixture places reinforcement before measuring 7, will reinforce 7 end face of side is plane
Side and locating piece 2 positioning planar registration, side 7 will be reinforced and be positioned over the positioning of the first support column 4 and the second support column 6
In slot.At this point, reinforce side the translation in tri- directions XYZ and the rotation of XZ both directions will be completely restricted, and Y-direction by
It may cause small rotation there are certain surplus in locating slot, so, it can be by Y with the cooperation for reinforcing side using positioning pin 5
It is entirely limited to swing offset.Finally, only need to ensure 2 positioning surface of locating piece with reinforce 7 end face of side be bonded and positioning pin 5 and reinforcement
Side 7 contacts, then can determine the position for reinforcing side 7 in fixture, realizes the positioning to reinforcing side 7.
The mentality of designing that the present invention answers material blade inlet edge titanium alloy reinforcement side three-dimensional coordinates measurement fixture is as follows：The design is quasi- real
Now to reinforcing positioning of the side 7 in fixture, facilitate subsequent three-dimensional coordinates measurement and coherent detection.
The placement posture for reinforcing side 7 in fixture is determined, locating piece 2, positioning are determined according to the placement posture for reinforcing side 7
Locating slot in pin 5, the placement position of the first support column 4 and the second support column 6 and the first support column 4 and the second support column 6
How to design.Reinforce 7 finished product of side to ensure that fixture does not injure, when fluting, which should ensure that, determines that the bottom edge contour line for placing posture is smart
Really errorless, there are certain surpluses to ensure all qualifications on the basis of reinforcing the design plus tolerance of 7 edge head outer mold surface of side for slot side
Part can be embedded in fixture locating slot and to workpiece without excessive chucking power, and can safely and fast be taken after measurement
Under.Matched with positioning pin 5 with locating piece 2 and the locating slot of the first support column 4 and the second support column 6 to reinforce side 7 position
Restriction is set, determines the position for reinforcing side 7 in fixture.
The present invention answer material blade inlet edge titanium alloy reinforce side three-dimensional coordinates measurement fixture primary object be：Fixture use compared with
To reinforcing, this kind of no benchmark in side 7 is big to reverse the quick of long deep trouth in constrained procedure easy to implement and relatively regular entity are realized
It is accurately positioned to realize three-dimensional coordinates measurement.
The present invention answer material blade inlet edge titanium alloy reinforce side three-dimensional coordinates measurement fixture operation principle be：Utilize reinforcement side 7
Part shape characteristic, effectively constrained with plane and pin reinforcing side 7, and according to the pose after constraint to type face into
Row is fixed, and how the reinforcement side 7 irregularly without benchmark is determined that origin is long for rule with Reference Transforming in three coordinate measuring machine
The determination of the origin and benchmark of cube.
Two thin-walled end faces for reinforcing 7 wide end side of side in a plane, using this plane, can design a kind of clamping
Scheme ensures to reinforce pose and stabilization of the side 7 during three coordinate measurements.A cuboid is designed as pedestal 1, pedestal 1
Upper includes two the first support columns 4 and the second support column 6 containing locating slot, first support column 4 and the second support column 6 it is interior
Slot with reinforce when 7 corresponding positions have and reinforce 7 inner mold being consistent can to reinforce side 7 effectively supported, also include limit
The block of one positioning pin 5 of other fixed direction poses and a positioning planar end.
The invention has the characteristics that：
1. good positioning effect.If definition reinforcement 7 length direction of side is X to vertical direction is Z-direction, with cartesian coordinate system
Determine Y-direction.At this point, locating piece 2 can limit X to translation freedoms and the rotary freedom of Y-direction, locating slot can limit Y-direction and Z
To translation freedoms and X to the rotary freedom with Z-direction.Final 6 degree of freedom for reinforcing side are completely restricted, and reinforce side
7 position in fixture is now uniquely determined.
2. benchmark centering is fast.It needs to find a frame of reference before three coordinate measuring machine work, it need to be according to two mutually
It is vertical while and the two while the plane that is constituted determine the frame of reference.Therefore, pedestal 1 is designed as cuboid, utilized
Mutually perpendicular two sides of one of which and plane can fast and accurately search out the frame of reference.
3. it is few to measure interference.A part for the locating slot that only the first support column 4 and the second support column 6 are opened in fixture
There is the contact of package form with side 7 is reinforced, and since the characteristics of reinforcing side 7 locating slot is smaller and shallower, only take up reinforcement
The minimum part on side 7 for positioning, all exposed and measuring route with three coordinate measuring machine in remaining part almost without
Any interference.
Claims (10)
1. a kind of multiple material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture, which is characterized in that the fixture includes rectangular
The top of body pedestal (1), the pedestal (1) is disposed with along the trend for reinforcing side (7) from the wide end for reinforcing side (7)
For carrying out clamping and fixed locating piece, the first support column (4), positioning pin (5) and the second support column to reinforcing side (7)
(6)；
Wherein, the locating piece includes the locating piece (2) fitted closely and auxiliary positioning block (3), auxiliary positioning block (3) and positioning
Block (2) cooperation plane normal direction it is vertical with pedestal (1) surface normal direction, and with reinforcement side (7) wide end end face method
Line direction is parallel；The outer circumference face of the positioning pin (5) and described reinforcement side bottom edge outer mold surface concave portion any point phase
It cuts.
2. material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture again as described in claim 1, which is characterized in that described
The length of pedestal (1) is more than or equal to the 30% of described reinforcement side (7) length, and width is more than or equal to the maximum for reinforcing side (7) wide end
The thickness of size, pedestal (1) is more than or equal to 5mm.
3. material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture again as claimed in claim 1 or 2, which is characterized in that
First support column (4) and the second support column (6) spacing are not less than reinforcing the 30% of edge lengths, the first support column (4) and second
Dagger (6) includes the cylinder and round platform being vertically connected with, and the radius of cylinder is not less than 10mm, round platform upper half not less than 10mm height
Diameter is identical as cylindrical radius, and frustum cone height is more than the maximum height difference for reinforcing bottom profiled curve under the working view of side.
4. material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture again as claimed in claim 3, which is characterized in that described
The top of first support column (4) and the column top of the second support column (6) are both provided with locating slot, two locating slots with
Inner mold adaptable on the outside of (7) when reinforcing all having and reinforcing at the position that (7) contact.
5. material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture again as claimed in claim 4, which is characterized in that described
Size unilateral amplification 5mm on the basis of the theoretical amount of opening for reinforcing side (7) of opening the widest part of locating slot is hereinafter, the positioning
Longitudinal depth of slot is >=10mm.
6. material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture again as described in claim 1, which is characterized in that described
The mating surface of locating piece (2) and auxiliary positioning block (3) and the verticality of the upper surface of pedestal (1) are kept relative to base upper surface
Error is spent less than or equal to (1), and the plane runout error of the mating surface of the locating piece (2) and auxiliary positioning block (3) is less than
0.5mm。
7. a kind of multiple material blade inlet edge titanium alloy reinforces the design method of side three-dimensional coordinates measurement fixture, which is characterized in that according to
Lower step is implemented：
Step 1, design pedestal (1)：
It will reinforce side (7) opening upwards to be placed in above pedestal (1), and choose pedestal (1) upper surface any point as origin, if
The meridian direction for setting reinforcement side (7) is X to the opening direction for reinforcing side (7) is Z-direction, is defined according to cartesian coordinate system
Coordinate system；Using X to the rectangle upper surface for defining pedestal as width for length, Y-direction, the rectangle upper surface be in working condition down with
The parallel face of three-dimensional coordinates measurement machine worktable；
Step 2, Design Orientation part：
Locating piece is set to pedestal (1) at the position for reinforcing side (7) end, and the locating piece includes fitting closely
The upper table of the mating surface and pedestal (1) of locating piece (2) and auxiliary positioning block (3), the locating piece (2) and auxiliary positioning block (3)
The verticality in face keeps error to be spent less than or equal to (1) relative to base upper surface；The locating piece (2) and auxiliary positioning block (3)
Mating surface plane runout error be less than 0.5mm；The plane normal direction of auxiliary positioning block (3) and locating piece (2) cooperation with
Pedestal (1) surface normal direction is vertical, and parallel with the normal line of butt end direction of side (7) wide end is reinforced；Locating piece (2) and auxiliary
The plane of locating piece (3) cooperation is bonded completely, and plane runout error is less than 0.5mm；
Step 3, design support column：
3.1) interval the first support column of setting (4) and the second support column (6) on pedestal (1), the first support column (4) and second
Dagger (6) is set to the both sides for reinforcing side, and not less than reinforcing the 30% of edge lengths, the first support column (4) and second support spacing
Column (6), which is set to, reinforces the section lower section that side (7) are not required to detection；
3.2) Design Orientation slot：
Behind the position for determining the first support column (4) and the second support column (6), according to the first support column (4) and the second support column
(6) locate the corresponding theoretical model for reinforcing side shape respectively to separately design locating slot, bottom sideline and the reinforcement side of locating slot
(7) theoretical model of outer profile is completely superposed, and the size of opening the widest part of locating slot is to reinforce the theoretical amount of opening in side (7) as base
The unilateral amplification 5mm of standard hereinafter, the locating slot longitudinal depth >=10mm；
Step 4, Design Orientation pin：
On reinforcing the contour line of side (7) with respect to evagination, the outer circumference face of positioning pin (5) adds with described for positioning pin (5) setting
The position of strong in the tangent reinforcement with constraint in bottom edge outer mold surface concave portion any point (7).
8. the design method that material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture is answered as claimed in claim 7, it is special
Sign is, the length of the pedestal (1) >=described reinforces the 30% of edge lengths, the maximum width on width >=reinforcement side, the bottom of according to
The length and width that seat (1) has had determined that are more than or equal to 5mm to calculate the thickness of pedestal (1).
9. the design method that material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture is answered as claimed in claim 7, it is special
Sign is that the first support column (4) and the second support column (6) include the cylinder and round platform being vertically connected with, and the radius of cylinder is not small
It is not less than 10mm in 10mm height, radius is identical as cylindrical radius on round platform, under frustum cone height is more than under reinforcement side working view
The maximum height difference of contour curve.
10. the design method that material blade inlet edge titanium alloy reinforces side three-dimensional coordinates measurement fixture is answered as claimed in claim 7, it is special
Sign is, positioning pin (5) is designed as cylinder, positioning pin (5) and pedestal (1) contact portion with the contact-segment for reinforcing side (7)
It is designed as round platform, positioning pin (5) is connected with pedestal (1) by cylindrical pins transition.
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