CN103302592A - Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface - Google Patents
Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface Download PDFInfo
- Publication number
- CN103302592A CN103302592A CN2013102285608A CN201310228560A CN103302592A CN 103302592 A CN103302592 A CN 103302592A CN 2013102285608 A CN2013102285608 A CN 2013102285608A CN 201310228560 A CN201310228560 A CN 201310228560A CN 103302592 A CN103302592 A CN 103302592A
- Authority
- CN
- China
- Prior art keywords
- contact wheel
- vector
- polishing
- cutter
- axis vector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention provides a numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of a contact wheel and a moulded surface. The control method comprises the following steps: firstly, in a longitudinal polishing way, establishing a vector, which takes two adjacent cutter location points on the same polishing track as a starting point and a finishing point and has the direction consistent with a feeding direction of a cutter, as an axial vector of the contact wheel; secondly, establishing a normal vector of an offset surface perpendicular to the moulded surface by passing through the finishing point of the axial vector of the contact wheel; and finally, computing a vector product of the normal vector of the offset surface and the axial vector of the contact wheel, and rotating the vector product with the axial vector of the contact wheel as a rotating axis, wherein the rotating angle is pi/2, the rotating plane is a plane determined by the normal vector of the offset surface and the vector product, the rotating direction is defined as a direction in which the vector product corresponds to the normal vector of the offset surface, and the rotated vector product is a cutter-axis vector for achieving the effective fitting of the contact wheel and the moulded surface. According to the control method, polishing cutter marks caused by a poor fitting effect can be effectively avoided, so that the surface quality of a component is improved and a demand on mass production is met.
Description
Technical field
The present invention relates to the polishing technology field, be specially the numerical control abrasive band polishing cutter shaft control method that realizes that contact wheel and profile are effectively fitted.
Background technology
Polishing technology is the important key technology in the precision optical machinery processing, and the blade polishing is the important application of polishing technology.Along with the development of pneumatics, structure technology and material technology, in order to improve the engine blade performance, its shape is day by day complicated, size increases day by day, wide string fan blade, plunders the new structure such as shape rotor blade and constantly is developed.In aero-engine, mostly be complex free curved surface as the blade of key part, that blade has is curved, wide, plunder, turn round, thin characteristics.The working environment of high pressure, top load, high temperature, stress state is so that fatigue fracture very easily occurs in the blade class A of geometric unitA.According to statistics, 80% fatigue fracture lost efficacy result from by polishing tool marks, surface texture damage, stress is concentrated and the component surface mass defect that causes.For the aeroperformance and the surface quality that improve the blade class A of geometric unitA, prolong its service life, blade must carry out polishing on Milling Process rear blade surface, to satisfy more and more higher blade profile processing request.
The main traditional mechanical special processing equipment that adopts of Present Domestic blade profile polishing is finished by hand by the workman.This processing mode is unstable, and machining accuracy is not high, and the uniformity of leaf quality and transplantability also all are difficult to guarantee, artificial polishing is owing to being that time processing puts in place, grinding allowance is large, and forming residual stress is also large, also easily causes the blade burn and the institutional framework of destruction blade material.And general numerical-control polishing equipment can not adapt to the geometry of blade class A of geometric unitA profile, polishing mechanism can't be adjusted attitude according to the variation of blade profile in real time in polishing process, cause polishing tool marks, surface damage layer, stress and the surface quality defect such as concentrate, can not satisfy the processing request of blade of aviation engine profile polishing process.
Because surface damage layer can be effectively removed in abrasive band polishing, the component surface residual stress after the processing is compression; And highly polished, roughness is little, can effectively avoid the fatigue failure that causes because of surface quality defect.So using abrasive band numerical control polishing technology is an important development direction of blade polishing technology.But China is still incomplete to the research of this technology, for the numerical-control polishing equipment of the key parts of blade class aero-engine, the requirement that process technology scheme can't satisfy mass production.What need to be resolved hurrily is: the contact wheel of regular geometry how with have blade profile curved, wide, that the characteristics such as plunder, turn round and realize effectively fitting.The so-called applying: refer in the polishing process, the contact wheel that strain occurs will form a contact area with blade profile; If should equal the contact wheel bus length along the ultimate range on the contact wheel axis direction in the zone, then be called effective applying.If should the zone along the ultimate range on the contact wheel axis direction less than the contact wheel bus length, tool marks then can appear polishing, have a strong impact on the fatigue life of blade.
Summary of the invention
The technical problem that solves
The problem that exists for solving prior art, the present invention proposes a kind of numerical control abrasive band polishing cutter shaft control method that realizes that contact wheel and profile are effectively fitted, by control generating tool axis vector (the abrasive band back shaft is defined as cutter shaft), adjust position and the attitude of contact wheel in the polishing process, effectively utilized the flexible of the strain of contact wheel and abrasive band, so that abrasive band contact wheel and polished profile reach maximum applying effect, improve the surface quality of member.
Technical scheme
Principle of the present invention is: under vertical polishing mode, structure on the same polishing locus adjacent two cutter locations as start, end and the direction vector consistent with the tool feeding direction as contact wheel axis vector.Then, mistake contact wheel axis vector terminal point is done perpendicular to the method for Three-dimension face and is vowed.At last, calculate the vector product of biasing surface method arrow and contact wheel axis vector; Take contact wheel axis vector as rotation, rotate this vector product, anglec of rotation pi/2, Plane of rotation are that the biasing surface method is vowed and the determined plane of this vector product, direction of rotation is defined as by this vector product and corresponds to the direction that the biasing surface method is vowed.Postrotational vector product is satisfy contact wheel and the effective generating tool axis vector of fitting of profile of the present invention.
Technical scheme of the present invention is:
The numerical control abrasive band polishing cutter shaft control method that described realization contact wheel and profile are effectively fitted is characterized in that: adopt following steps:
Step 1: in 3D sculpting software, setovered in the polished profile zone in the polished components three-dimensional model, biased direction is the exterior normal direction of polished profile, and offset or dish is the poor of contact wheel radius and polishing surplus;
Step 2: take the geometric center point of contact wheel as cutter location, the parameter collimation methods such as employing are determined the contact wheel polishing locus at biasing surface, and at the discrete cutter location of trajectory;
Step 3: determine the generating tool axis vector that arbitrary cutter location is corresponding by following steps:
Step 3.1: take this cutter location as starting point, be terminal point along the adjacent next cutter location of tool feeding direction, structural contact wheel axis vector τ; Crossing contact wheel axis vector τ starting point does perpendicular to the method for polished Three-dimension face and vows n; Structured approach is vowed the vector product t of n and contact wheel axis vector τ;
Step 3.2: take contact wheel axis vector τ as rotation, solderless wrapped connection wheel trolley axis vector τ starting point rotating vector amasss t, and the anglec of rotation is pi/2, and the postrotational vector product that obtains is this cutter location correspondence and satisfies contact wheel and the effective generating tool axis vector of fitting of profile.
Beneficial effect
The present invention is by determining the generating tool axis vector of cutter location, effectively avoids the polishing tool marks of bringing out because of the applying poor effect, improved the surface quality of member, satisfies the mass production demand.
Description of drawings
Fig. 1: cutter location schematic diagram
Fig. 2: vertical abrasive band polishing schematic diagram;
Fig. 3: abrasive band polishing cutter schematic diagram;
Fig. 4: structure vector product schematic diagram;
Fig. 5: structure abrasive band back shaft schematic vector diagram;
Wherein: 1. blade profile; 2. abrasive band contact wheel; 3. abrasive band contact wheel back shaft; 4. cutter location; 5. contact wheel axis; 6. blade profile biasing surface; 7. contact wheel axis vector τ; 8. cross the method arrow n of contact wheel axis vector startpoint perpendicular to biasing surface; 9. the vector product t that vows of contact wheel axis vector and biasing surface method; 10. the generating tool axis vector T that obtains.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described:
The present embodiment is in order to fit to greatest extent contact wheel and blade profile, avoids because of the polishing tool marks that owing of causing of applying poor effect cut, over-cutting brings out, and concrete generating tool axis vector control method step is as follows:
Step 1: in the CAD/CAM 3D sculpting software, setovered in the polished profile zone in the polished blade class A of geometric unitA threedimensional model, biased direction is the exterior normal direction of polished profile, and offset or dish is the poor of contact wheel radius and polishing surplus;
Step 2: as shown in Figure 1, take the geometric center point of contact wheel as cutter location, the parameter collimation methods such as employing are determined contact wheel polishing locus (Fig. 2) at biasing surface, and at the discrete cutter location of trajectory, can be with by the largest chord high level error is set cutter location being controlled during discrete cutter location, wherein the largest chord high level error refers on the same trajectory ultimate range between straight line that two adjacent cutter locations are terminus and the affiliated trajectory of cutter location;
Step 3: determine the generating tool axis vector that arbitrary cutter location is corresponding by following steps:
Step 3.1: with reference to accompanying drawing 4, take this cutter location as starting point, be terminal point along the adjacent next cutter location of tool feeding direction, structural contact wheel axis vector τ; Crossing contact wheel axis vector τ starting point does perpendicular to the method for polished Three-dimension face and vows n; Structured approach is vowed the vector product t of n and contact wheel axis vector τ;
Step 3.2: as shown in Figure 5, take contact wheel axis vector τ as rotation, solderless wrapped connection wheel trolley axis vector τ starting point rotating vector amasss t, the anglec of rotation is pi/2, then Plane of rotation is that the biasing surface method is vowed n and the determined plane of this vector product t, and the postrotational vector product that obtains is this cutter location correspondence and satisfies contact wheel and the effective generating tool axis vector of fitting of profile.
Claims (1)
1. realize the effectively numerical control abrasive band polishing cutter shaft control method of applying of contact wheel and profile for one kind, it is characterized in that: adopt following steps:
Step 1: in 3D sculpting software, setovered in the polished profile zone in the polished components three-dimensional model, biased direction is the exterior normal direction of polished profile, and offset or dish is the poor of contact wheel radius and polishing surplus;
Step 2: take the geometric center point of contact wheel as cutter location, the parameter collimation methods such as employing are determined the contact wheel polishing locus at biasing surface, and at the discrete cutter location of trajectory;
Step 3: determine the generating tool axis vector that arbitrary cutter location is corresponding by following steps:
Step 3.1: take this cutter location as starting point, be terminal point along the adjacent next cutter location of tool feeding direction, structural contact wheel axis vector τ; Crossing contact wheel axis vector τ starting point does perpendicular to the method for polished Three-dimension face and vows n; Structured approach is vowed the vector product t of n and contact wheel axis vector τ;
Step 3.2: take contact wheel axis vector τ as rotation, solderless wrapped connection wheel trolley axis vector τ starting point rotating vector amasss t, and the anglec of rotation is pi/2, and the postrotational vector product that obtains is this cutter location correspondence and satisfies contact wheel and the effective generating tool axis vector of fitting of profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102285608A CN103302592A (en) | 2013-06-08 | 2013-06-08 | Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102285608A CN103302592A (en) | 2013-06-08 | 2013-06-08 | Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103302592A true CN103302592A (en) | 2013-09-18 |
Family
ID=49128537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102285608A Pending CN103302592A (en) | 2013-06-08 | 2013-06-08 | Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103302592A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116836A (en) * | 2015-06-25 | 2015-12-02 | 湖北知本信息科技有限公司 | Cutter path planning method for abrasive belt grinding numerical control machining of vane |
| CN106707960A (en) * | 2016-12-25 | 2017-05-24 | 湖北知本信息科技有限公司 | Abrasive belt grinding numerical-control processing cutter-axis vector control method |
| CN106707961A (en) * | 2016-12-25 | 2017-05-24 | 湖北知本信息科技有限公司 | Cutter-axis vector control method for abrasive belt grinding numerical control machining |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991012111A1 (en) * | 1990-02-06 | 1991-08-22 | General Electric Company | Computer-controlled grinding machine for producing objects with complex shapes |
| JP4356857B2 (en) * | 2001-01-17 | 2009-11-04 | 株式会社リコー | Multi-axis NC grinding machine |
| CN102275122A (en) * | 2011-09-01 | 2011-12-14 | 西北工业大学 | Numerical control polishing method for profile of blade of integrated blade disk |
| CN102350522A (en) * | 2011-06-30 | 2012-02-15 | 西北工业大学 | Processing method of numerical control milling machine with tiltable main shaft |
| CN102626901A (en) * | 2012-04-23 | 2012-08-08 | 西北工业大学 | Numerical control machining method for ball polishing wheel |
| CN102806510A (en) * | 2012-08-14 | 2012-12-05 | 西北工业大学 | Numerically controlled polishing method for titanium alloy blade of aircraft engine |
-
2013
- 2013-06-08 CN CN2013102285608A patent/CN103302592A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991012111A1 (en) * | 1990-02-06 | 1991-08-22 | General Electric Company | Computer-controlled grinding machine for producing objects with complex shapes |
| JP4356857B2 (en) * | 2001-01-17 | 2009-11-04 | 株式会社リコー | Multi-axis NC grinding machine |
| CN102350522A (en) * | 2011-06-30 | 2012-02-15 | 西北工业大学 | Processing method of numerical control milling machine with tiltable main shaft |
| CN102275122A (en) * | 2011-09-01 | 2011-12-14 | 西北工业大学 | Numerical control polishing method for profile of blade of integrated blade disk |
| CN102626901A (en) * | 2012-04-23 | 2012-08-08 | 西北工业大学 | Numerical control machining method for ball polishing wheel |
| CN102806510A (en) * | 2012-08-14 | 2012-12-05 | 西北工业大学 | Numerically controlled polishing method for titanium alloy blade of aircraft engine |
Non-Patent Citations (1)
| Title |
|---|
| 全荣: "《五坐标联动数控技术》", 31 July 1995, article "球头刀心的位置及其法向量", pages: 63-66 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116836A (en) * | 2015-06-25 | 2015-12-02 | 湖北知本信息科技有限公司 | Cutter path planning method for abrasive belt grinding numerical control machining of vane |
| CN106707960A (en) * | 2016-12-25 | 2017-05-24 | 湖北知本信息科技有限公司 | Abrasive belt grinding numerical-control processing cutter-axis vector control method |
| CN106707961A (en) * | 2016-12-25 | 2017-05-24 | 湖北知本信息科技有限公司 | Cutter-axis vector control method for abrasive belt grinding numerical control machining |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104289748B (en) | A kind of large thin-wall covering adaptively equal wall thickness milling system and its processing method | |
| CN104096889B (en) | A kind of aerial blade processing method based on error compensation | |
| CN108145393B (en) | A kind of aero-engine compressor blade and its processing method | |
| CN102306010B (en) | Polishing track determination method for numerical control polishing blade type surface | |
| CN108581108B (en) | A kind of electric discharging machining electrode dressing method in place | |
| CN103586519B (en) | Ladder-type trough layered milling rough machining method | |
| CN103551929A (en) | Fabricating method for milling cutter | |
| CN104475835B (en) | A kind of blade tenon rounding machining process | |
| CN103273412B (en) | The machinery polishing that a kind of blade blade profile tool marks are removed is without surplus technique | |
| CN103586737A (en) | Compensation method for high-precision numerical-control milling for molded surfaces of blades | |
| CN103737451A (en) | Grinding wheel home position automation shaping and milling processing method of off-axis aspheric reflector | |
| CN103302592A (en) | Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface | |
| US7377037B2 (en) | Fillet machining method without adaptive probing | |
| CN103394988B (en) | Method for planning cutter feeding path and cutter retreating path in multi-axis linkage abrasive belt grinding machining | |
| CN105500180A (en) | Hybrid force/position control method of cathode roll grinding machine | |
| CN104440464A (en) | Method for three-axis linked double-spindle symmetric cantilever grinding machining of blade | |
| CN103878447A (en) | Large precise split composite involute internal gear broach and cutting edge grinding method | |
| CN105751795A (en) | Robot carving method based on elastic component | |
| CN102267077A (en) | Method for carrying out numerical control polishing on air inlet/exhaust edges of formed arc blades | |
| CN105843171A (en) | Computer software-based surface roughness prediction method during single-point diamond machining process | |
| CN111113208A (en) | Method for machining radial arc groove of guide blade of complex hollow turbine | |
| CN104690350A (en) | Numerical control machining method of mortise chamfering angles | |
| CN103949712B (en) | The processing method of form and position tolerance is ensured in female keyway slotting process | |
| CN102626901B (en) | Numerical control machining method for ball polishing wheel | |
| CN103586516A (en) | Automatic rounding composite machining method for mortise edges of high-temperature alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |