CN103921226B - V-type tenon root blade fixture and utilize the method for this fixture determination coordinate system - Google Patents
V-type tenon root blade fixture and utilize the method for this fixture determination coordinate system Download PDFInfo
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- CN103921226B CN103921226B CN201410119840.XA CN201410119840A CN103921226B CN 103921226 B CN103921226 B CN 103921226B CN 201410119840 A CN201410119840 A CN 201410119840A CN 103921226 B CN103921226 B CN 103921226B
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- blade
- clamp body
- cylinder
- tenon root
- fixture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
- B23Q3/063—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding turbine blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of V-type tenon root blade fixture and utilize the method for this fixture locating blades, for solving the technical problem of the existing fixture poor reliability for three-coordinate measuring machine of blade.Technical scheme is that this blade fixture comprises clamp body, holding screw, trip bolt, alignment pin, cylinder, screw and base plate.Clamp body locating surface adopts arc shape, and blade tenon root and clamp body locating surface are linear contact lay, if tenon root tilts, then only need tighten holding screw, hold out against cylinder by holding screw, cylindrical end face contacts with tenon foundation face, make tenon root generation relative sliding, can be realized it and automatically adjust location.Cylinder is keeper is also clamping element.Blade clamping relies on screw to promote cylinder, and cylinder promotes blade tenon foundation face and realizes clamping.Cylinder and blade contact area are comparatively large, reliable clamping.Screw does not directly contact with blade, protects blade tenon root.
Description
Technical field
The present invention relates to a kind of blade fixture, particularly relate to a kind of V-type tenon root blade fixture.Also relate to the method utilizing V-type tenon root blade fixture determination coordinate system.
Background technology
The development of modern Aviation industry requires more and more higher to engine performance, and as one of vital part, the in-process measurement Set and Positioning of blade proposes quite high requirement, becomes problem demanding prompt solution.
In process, need to rely on fixture to realize the accurate location of workpiece to be machined on lathe, and can prevent the position of causing due to cutting force in process from changing and a kind of process equipment of key of workpiece deformation.Fixture can position workpiece and apply corresponding clamping force, selects suitable fixture can control the clamping deformation of workpiece, reduces the position error of workpiece, thus improves machining accuracy and the surface quality of workpiece.
Crop leaf measuring can ensure vane manufacturing quality, but owing to locating the existence of the problems such as difficulty, is a difficult point of machining blade always, is embodied in: certainty of measurement, efficiency, reliability requirement are high; Blade measuring is located and is set up surving coordinate system complexity.
With regard to three-dimensional coordinates measurement, first will set up corresponding surving coordinate system according to datum level, but there are some problems, the first time three coordinate measuring machine carries out measuring, the tenon root lozenges of blade is little, sets up surving coordinate system more difficult; The second, because blades installation wedge surface is smaller, determine the coordinate plane of Blade measuring coordinate system with this, larger error can be brought, so best bet is design fixture.
With reference to Fig. 5.Document " Authorization Notice No. is the Chinese patent of CN102155928B " discloses a kind of fixture for three-coordinate measuring machine of blade and sets up the method for surving coordinate system, and wherein, fixture comprises clamp body 2, holding screw 3, alignment pin 5 and blade 10.Have V-type tongue-and-groove at the upper surface of clamp body 2, and the lozenges of the lozenges of this V-type tongue-and-groove and blade tenon root fits like a glove.V-type tongue-and-groove is positioned on the center line of clamp body 2 width.Holding screw 3 is positioned in the symmetrical centre of clamp body 2 length and width.During use, the tenon root of blade 10 is inserted in the V-type tongue-and-groove of clamp body 2 upper surface, and spacing by the alignment pin 5 being positioned at V-type groove one end.To hold out against screw loads in tapped through hole, to tighten up blade 10.This fixture Problems existing is that screw contacts with tenon foundation face, and contact area is little, and it is unreliable to clamp, and damaged blade tenon root.
Summary of the invention
In order to overcome the deficiency of the existing fixture poor reliability for three-coordinate measuring machine of blade, the invention provides a kind of V-type tenon root blade fixture.This blade fixture comprises clamp body, holding screw, trip bolt, alignment pin, cylinder, screw and base plate.Clamp body locating surface adopts arc shape, and blade tenon root and clamp body locating surface are linear contact lay, if tenon root tilts, then only need tighten holding screw, hold out against cylinder by holding screw, cylindrical end face contacts with tenon foundation face, make tenon root generation relative sliding, can be realized it and automatically adjust location.Cylinder is keeper is also clamping element.Blade clamping relies on screw to promote cylinder, and cylinder promotes blade tenon foundation face and realizes clamping.Cylinder and blade contact area are comparatively large, reliable clamping.Screw does not directly contact with blade, protects blade tenon root.
The present invention also provides the method utilizing V-type tenon root blade fixture determination coordinate system.
The technical solution adopted for the present invention to solve the technical problems is: a kind of V-type tenon root blade fixture, comprises clamp body 2, holding screw 3 and alignment pin 5, is characterized in also comprising trip bolt 4, cylinder 6, screw 7 and base plate 8.Clamp body 2 is connected with base plate 8 by screw 7.Base plate 8 bottom is provided with holding screw 3, holding screw 3 axis and cylinder 6 axes coincide, what be connected with holding screw 3 is a cylinder 6, cylinder 6 and clamp body 2 axes coincide, with clamp body 2 matched in clearance, cylinder 6 end face and blade tenon root 1 baseplane fit tightly.Clamp body 2 is provided with the V-type locating slot matched with blade tenon root 1, and on V-type locating slot, one end is provided with alignment pin 5, and the other end is provided with trip bolt 4.Clamp body locating surface 9 adopts arc shape, and blade tenon root 1 and clamp body locating surface 9 are linear contact lay.
Utilize a method for above-mentioned V-type tenon root blade fixture determination coordinate system, be characterized in adopting following steps:
First blade tenon root 1 is put into the V-type locating slot on clamp body 2, blade tenon root 1 one end and alignment pin 5 are adjacent to.Then the holding screw 3 bottom rotary clamp, cylinder 6 is moved axially along clamp body 2, cylinder 6 end face promotes blade tenon root 1 baseplane, blade tenon root 1 is contacted with the cambered surface of V-type locating slot on clamp body 2, apply clamping force with screw 7 pairs of blade tenon roots 1, realize blade along clamp shaft to clamping.Finally tighten the trip bolt 4 of the fixture other end, blade tenon root 1 and alignment pin 5 are adjacent to, blade is stepped up along fixture radial direction.On clamp body 2, n point is measured respectively by equal altitude method by point two places, goes out two circles, the center of circle is connected to Z axis with least square fitting; Choose three points in the upper surface of clamp body 2, its determined plane is XOY face; The intersection point getting Z axis and XOY face is initial point O, chooses 2 points in the upper upper surface of clamp body along V-type positioning groove length direction, and 2 lines are X-axis in the orthographic projection of XOY plane; According to right-hand rule determination Y-axis, namely determine coordinate system OXYZ.
The invention has the beneficial effects as follows: this blade fixture comprises clamp body, holding screw, trip bolt, alignment pin, cylinder, screw and base plate.Clamp body locating surface adopts arc shape, and blade tenon root and clamp body locating surface are linear contact lay, if tenon root tilts, then only need tighten holding screw, hold out against cylinder by holding screw, cylindrical end face contacts with tenon foundation face, make tenon root generation relative sliding, can be realized it and automatically adjust location.Cylinder is keeper is also clamping element.Blade clamping relies on screw to promote cylinder, and cylinder promotes blade tenon foundation face and realizes clamping.Cylinder and blade contact area are comparatively large, reliable clamping.Screw does not directly contact with blade, protects blade tenon root.
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated.
Accompanying drawing explanation
Fig. 1 is the front view of V-type tenon root blade fixture of the present invention.
Fig. 2 is the top view of V-type tenon root blade fixture of the present invention.
Fig. 3 is the sectional view of V-type tenon root blade fixture of the present invention.
Fig. 4 is the front sectional elevation of V-type tenon root blade fixture of the present invention.
Fig. 5 is the clamp structure schematic diagram of background technology for three-coordinate measuring machine of blade.
In figure, 1-blade tenon root, 2-clamp body, 3-holding screw, 4-trip bolt, 5-alignment pin, 6-cylinder, 7-screw, 8-base plate, 9-clamp body locating surface, 10-blade.
Detailed description of the invention
Following examples are with reference to Fig. 1-4.
V-type tenon root blade fixture of the present invention comprises clamp body 2, holding screw 3, trip bolt 4, alignment pin 5, cylinder 6, screw 7 and base plate 8.When described V-type tenon root blade fixture is used for machining blade, by chuck clamping clamp body 2, clamp body 2 axis of rotation is overlapped with rotating shaft of numerical control machine.This fixture is when detecting blade profile crudy in order to set up surving coordinate system fast, and holding screw 3 need be dismantled during use, blade is placed on measuring machine workbench upward.
By screw 7, clamp body 2 is connected with base plate 8.Base plate 8 bottom is provided with holding screw 3, holding screw 3 axis and cylinder 6 axes coincide, what be connected with holding screw 3 is a cylinder 6, cylinder 6 and clamp body 2 axes coincide, with clamp body 2 matched in clearance, cylinder 6 end face and blade tenon root 1 baseplane fit tightly.Clamp body 2 is provided with the V-type locating slot matched with blade tenon root 1, and on V-type locating slot, one end is provided with alignment pin 5, and the other end is provided with trip bolt 4.Clamp body locating surface 9 adopts arc shape, and blade tenon root 1 and clamp body locating surface 9 are linear contact lay.
Utilize the method for above-mentioned V-type tenon root blade fixture determination coordinate system.First blade tenon root 1 is put into the V-type locating slot on clamp body 2, blade tenon root 1 one end and alignment pin 5 are adjacent to.Then the holding screw 3 bottom rotary clamp, cylinder 6 is moved axially along clamp body 2, cylinder 6 end face promotes blade tenon root 1 baseplane, blade tenon root 1 is contacted with the cambered surface of V-type locating slot on clamp body 2, apply clamping force with screw 7 pairs of blade tenon roots 1, realize blade along clamp shaft to clamping.Finally tighten the trip bolt 4 of the fixture other end, blade tenon root 1 and alignment pin 5 are adjacent to, blade is stepped up along fixture radial direction.On clamp body 2, n point is measured respectively by equal altitude method by point two places, goes out two circles, the center of circle is connected to Z axis with least square fitting; Choose three points in the upper surface of clamp body 2, its determined plane is XOY face; The intersection point getting Z axis and XOY face is initial point O, chooses 2 points in the upper upper surface of clamp body along V-type positioning groove length direction, and 2 lines are X-axis in the orthographic projection of XOY plane; According to right-hand rule determination Y-axis, namely determine coordinate system OXYZ.
Claims (2)
1. a V-type tenon root blade fixture, comprise clamp body (2), holding screw (3) and alignment pin (5), characterized by further comprising trip bolt (4), cylinder (6), screw (7) and base plate (8); Clamp body (2) is connected with base plate (8) by screw (7); Base plate (8) bottom is provided with holding screw (3), holding screw (3) axis and cylinder (6) axes coincide, what be connected with holding screw (3) is a cylinder (6), cylinder (6) and clamp body (2) axes coincide, with clamp body (2) matched in clearance, cylinder (6) end face and blade tenon root (1) baseplane fit tightly; Clamp body (2) is provided with the V-type locating slot matched with blade tenon root (1), and on V-type locating slot, one end is provided with alignment pin (5), and the other end is provided with trip bolt (4); Clamp body locating surface (9) adopts arc shape, and blade tenon root (1) and clamp body locating surface (9) are linear contact lay.
2. utilize a method for V-type tenon root blade fixture determination coordinate system described in claim 1, it is characterized in that adopting following steps:
First blade tenon root (1) is put into the V-type locating slot on clamp body (2), blade tenon root (1) one end and alignment pin (5) are adjacent to; Then the holding screw (3) bottom rotary clamp, cylinder (6) is moved axially along clamp body (2), cylinder (6) end face promotes blade tenon root (1) baseplane, the cambered surface of the upper V-type locating slot of blade tenon root (1) and clamp body (2) is contacted, with screw (7) to blade tenon root (1) apply clamping force, realize blade along clamp shaft to clamping; Finally tighten the trip bolt (4) of the fixture other end, blade tenon root (1) and alignment pin (5) are adjacent to, blade is stepped up along fixture radial direction; At clamp body (2), n point is measured respectively by equal altitude method by upper point two places, goes out two circles, the center of circle is connected to Z axis with least square fitting; Choose three points in the upper surface of clamp body (2), its determined plane is XOY face; The intersection point getting Z axis and XOY face is initial point O, chooses 2 points in the upper surface of clamp body along V-type positioning groove length direction, and 2 lines are X-axis in the orthographic projection of XOY plane; According to right-hand rule determination Y-axis, namely determine coordinate system OXYZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119840.XA CN103921226B (en) | 2014-03-27 | 2014-03-27 | V-type tenon root blade fixture and utilize the method for this fixture determination coordinate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119840.XA CN103921226B (en) | 2014-03-27 | 2014-03-27 | V-type tenon root blade fixture and utilize the method for this fixture determination coordinate system |
Publications (2)
| Publication Number | Publication Date |
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| CN103921226A CN103921226A (en) | 2014-07-16 |
| CN103921226B true CN103921226B (en) | 2016-03-02 |
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| CN201410119840.XA Expired - Fee Related CN103921226B (en) | 2014-03-27 | 2014-03-27 | V-type tenon root blade fixture and utilize the method for this fixture determination coordinate system |
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| CN (1) | CN103921226B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104625807A (en) * | 2015-01-13 | 2015-05-20 | 中国民航大学 | Vane shape-adaptive tool setting clamp |
| CN105300216B (en) * | 2015-11-19 | 2018-04-20 | 中国南方航空工业(集团)有限公司 | Blade profile measuring device |
| CN105291012B (en) * | 2015-11-20 | 2017-01-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Clamp for vibration fatigue of circular-arc-tooth tenon blade and manufacturing method of clamp |
| CN105547110A (en) * | 2015-12-14 | 2016-05-04 | 中国航空工业标准件制造有限责任公司 | Measuring tool for measuring size of spherical surface high-lock nut assembly components |
| CN106312869B (en) * | 2016-09-30 | 2019-04-16 | 中国南方航空工业(集团)有限公司 | Turbo blade metering tenon clamping and positioning device |
| CN107901065B (en) * | 2017-12-28 | 2023-11-03 | 南京工程学院 | Multi-object clamping actuator with color recognition at tail end of robot |
| CN108981629A (en) * | 2018-05-30 | 2018-12-11 | 中国航发动力股份有限公司 | A kind of engine blade measuring device |
| CN109990749B (en) * | 2019-05-06 | 2024-02-09 | 广西玉柴机器股份有限公司 | Auxiliary device for measuring screw hole position degree |
| CN110303485A (en) * | 2019-07-11 | 2019-10-08 | 广东天机机器人有限公司 | Base point location device |
| CN112857280B (en) * | 2021-01-14 | 2021-10-08 | 上海航翼高新技术发展研究院有限公司 | Tool of measuring machine for rotor blade of aircraft engine and coordinate system establishing method thereof |
| CN114295501A (en) * | 2021-12-22 | 2022-04-08 | 苏州长菱测试技术有限公司 | Device for positioning on blade body of blade and marking method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2363660A1 (en) * | 1973-12-20 | 1975-06-26 | Kraftwerk Union Ag | Turbine blade groove cutting tool - has double point provided by second insert tool screw adjustable in body |
| CN101419114B (en) * | 2007-10-24 | 2011-02-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for measuring fatigue test maximum stress of single-journal vane |
| US8151458B2 (en) * | 2008-02-21 | 2012-04-10 | United Technologies Corporation | Non-metallic cover for a fixture |
| GB0823505D0 (en) * | 2008-12-24 | 2009-01-28 | Ridehough Benjamin J | Improvements relating to machining aids for turbine blades |
| CN201540106U (en) * | 2009-11-13 | 2010-08-04 | 中国航空工业集团公司北京航空材料研究院 | Measuring fixture for precision cast turbine blades |
| CN102155928B (en) * | 2011-03-03 | 2012-12-19 | 西北工业大学 | Fixture for three-coordinate measuring machine of blade and method for establishing measuring coordinate system |
| CN102494649A (en) * | 2011-12-27 | 2012-06-13 | 无锡透平叶片有限公司 | Clamping tool for three-dimensional detection of swallowtail-shaped blade root blade |
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2014
- 2014-03-27 CN CN201410119840.XA patent/CN103921226B/en not_active Expired - Fee Related
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| CN103921226A (en) | 2014-07-16 |
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Inventor after: Shi Kaining Inventor after: Lin Xiaojun Inventor after: Chen Yue Inventor after: Gao Yuan Inventor after: Shi Yaoyao Inventor after: Ren Junxue Inventor after: Wang Zengqiang Inventor before: Lin Xiaojun Inventor before: Chen Yue Inventor before: Gao Yuan Inventor before: Shi Yaoyao Inventor before: Ren Junxue Inventor before: Wang Zengqiang |
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