CN103100950B - Cantilever grinding machining method for vane using three-axis linkage interpolation - Google Patents
Cantilever grinding machining method for vane using three-axis linkage interpolation Download PDFInfo
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- CN103100950B CN103100950B CN201310009069.6A CN201310009069A CN103100950B CN 103100950 B CN103100950 B CN 103100950B CN 201310009069 A CN201310009069 A CN 201310009069A CN 103100950 B CN103100950 B CN 103100950B
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Abstract
A cantilever grinding machining method for a vane using three-axis linkage interpolation comprises four steps: (1) ascertaining the grinding method of a vane-shaped face according to the structure type and the motion mode of a machine tool and the structure form of the vane; (2) clamping a tenon or a installation reference block of the vane through a single end of a fixture to enable the vane to be firmly fixed on an operating platform of the machine tool and keeping the vane-shaped face portion needing machining in a cantilever state on the numerical control machine tool; (3) selecting three machine tool motion axes suitable for the grinding machining of the vane-shaped face and a grinding wheel to composite a digital control program, and driving the three linear motion axes X, Y and Z, or the axis X, the axis Z and axis C, or the axis Y, the axis Z and the axis C to conduct the three-axis linkage interpolation motion by the digital control program to form a motion trail of the grinding wheel when the vane is in a grinding machining; and (4) enabling the grinding wheel to rotate at a high speed under the driving of a main shaft of the machine tool and move along the motion trail of the three-axis linkage interpolation of the machine tool to achieve the three-axis linkage interpolation cantilever grinding machining of the vane-shaped face.
Description
Technical field
The present invention relates to a kind of grinding processing method of blade profile, particularly relate to a kind of blade cantilever grinding processing method utilizing three-shaft linkage interpolation, belong to blade processing technical field.
Background technology
At present, the blade with complex profile generally adopts four-axle linked, five-axle linkage or more multi-shaft interlockedly carries out milling or polishing, meanwhile, in order to improve the stability in process, blade generally adopts both-end fixedly mount or support on blade profile.
At least there is following shortcoming in above-mentioned processing method:
Because the interpolation precision of Digit Control Machine Tool, dynamic stiffiness and movement velocity all can the corresponding reductions along with the increase of number of motion axes, therefore, in machining blade process, the Digit Control Machine Tool number of axle more multi-processing precision and the working (machining) efficiency that participate in interlock will be lower, meanwhile, the cost of lathe is also higher.And the both-end fixed installation of blade or to carry out supplemental support on blade profile be all that location crossed by a kind of clamping, capital produces corresponding clamping internal stress in blade, blade is caused to produce clamping deformation, clamping Stress Release after blade processing completes, the clamping deformation of blade is restored, thus make blade lose machining accuracy, have a strong impact on the processing geometric accuracy of blade.
Summary of the invention
1, object: the object of this invention is to provide a kind of blade cantilever grinding processing method utilizing three-shaft linkage interpolation, it is a kind of processing method of the high accuracy of blade profile, high efficiency, low cost, for efficient, the high-quality of blade, batch production provide a reliable approach.
2, technical scheme:
The object of the invention is to be achieved through the following technical solutions: in blade machining process provided by the invention, blade is single-ended to be fixed on the workbench of Digit Control Machine Tool, its installation can use bench vice, clamping kit, bolted and other special fixture etc., only need ensure to need the blade mould surface portion of processing to be in cantilever position completely, and leave enough spaces for the moving interpolation of emery wheel; Emery wheel is to the grinding track of blade profile by three linear axis of Digit Control Machine Tool or a gyroaxis, and two linear axis interlock interpolations obtain; And drive emery wheel to carry out grinding to blade profile by the high-speed rotary main shaft of lathe.
In sum, a kind of blade cantilever grinding processing method utilizing three-shaft linkage interpolation of the present invention, the method concrete steps are as follows:
Step one: according to the version of the structure type of lathe, motion mode and blade, determine the grinding method of blade profile, and select the relative installation of blade on platen.
Step 2: by the reference for installation of the single-ended clamping blade tenon of fixture or blade, blade is fixed on the workbench of lathe securely, needs the blade profile part of processing to keep cantilever position on Digit Control Machine Tool, as shown in Figure 1.
Step 3: three machine tool motion axles and the emery wheel of choosing applicable blade profile grinding carry out numerical control program establishment, drive X, Y, Z tri-linear motion axis of lathe or X-axis, Z axis, C axle or Y-axis, Z axis, C axle to carry out three-shaft linkage moving interpolation by numerical control program, thus define the grinding wheel movement track that blade grinding adds man-hour.
Step 4: emery wheel is High Rotation Speed under the driving of machine tool chief axis, and move according to the movement locus of lathe three-shaft linkage interpolation, thus realize the three-shaft linkage interpolation cantilever grinding of blade profile.
3, advantage and effect: blade grinding processing method provided by the invention, the generation of blade clamping deformation can be avoided, reduce the unfavorable factor affecting blade processing quality, wheel grinding processing also can reduce processing vibration and the stress deformation of blade, improves the geometric accuracy of blade processing.
Accompanying drawing explanation
Fig. 1 is blade holotype face transverse grinding schematic diagram;
Fig. 2 is blade blade back and leaf basin longitudinal grinding schematic diagram;
Fig. 3 is blade front and rear edge longitudinal grinding schematic diagram;
Fig. 4 is blade grinding process FB(flow block) of the present invention.
In figure, symbol description is as follows:
1 emery wheel; 2 emery wheel transverse grinding movement locus; 3 tenons or reference for installation block; 4 fixtures;
5 leaf basins; 6 blade backs; 7 emery wheel longitudinal grinding movement locus; 8 blade inlet edges; 9 trailing edges;
Detailed description of the invention
The present invention utilizes the three-shaft linkage moving interpolation of Digit Control Machine Tool, and the single-ended cantilever clamping of blade, on Digit Control Machine Tool, uses emery wheel to carry out grinding to the profile of blade.For after the single-ended clamping of blade relative to the position of lathe and the structure type of Digit Control Machine Tool, three different axles can be chosen and carry out moving interpolation, thus obtain the grinding motion track of emery wheel.Below by specific embodiment, and the present invention is described in further detail by reference to the accompanying drawings.
See Fig. 4, a kind of blade cantilever grinding processing method utilizing three-shaft linkage interpolation of the present invention, the method concrete steps are as follows:
Step one: according to the version of the structure type of lathe, motion mode and blade, determine the grinding method of blade profile, and select the relative installation of blade on platen.Multi-form blade can adjust accordingly according to the practical structures of lathe.
Step 2: as shown in Figure 1, by the single-ended clamping blade tenon of fixture (4) or reference for installation block (3), makes blade be fixed on securely on the workbench of lathe, needs the blade profile part of processing to keep cantilever position on Digit Control Machine Tool.
Step 3: three machine tool motion axles and the emery wheel (1) of choosing applicable blade profile grinding carry out numerical control program establishment, under blades installation mode as shown in Figure 1, Figure 2, Figure 3 shows, drive X, Y, Z tri-linear motion axis of lathe or X-axis, Z axis, C axle or Y-axis, Z axis, C axle to carry out three axle moving interpolations by numerical control program, thus define emery wheel transverse grinding movement locus (2), emery wheel longitudinal grinding movement locus (7) that blade grinding adds man-hour.
It is the grinding wheel movement track schematic diagram of blade holotype face transverse grinding shown in Fig. 1.Under relative installation as shown in Figure 1, interlock interpolation can be carried out by X, Y, Z tri-linear motion axis of lathe or X-axis, Z axis, C axle or Y-axis, Z axis, C axle, drive emery wheel (1) acquisition relative to the emery wheel transverse grinding movement locus (2) of blade, thus form the transverse grinding processing in blade holotype face.
Being the grinding wheel movement track schematic diagram of blade blade back and leaf basin longitudinal grinding shown in Fig. 2, is the grinding wheel movement track schematic diagram of blade front and rear edges longitudinal grinding shown in Fig. 3.Under relative installation as shown in Figures 2 and 3, can by the X of lathe, Y, Z tri-linear motion axis or X-axis, Z axis, C axle or Y-axis, Z axis, C axle carries out interlock interpolation, emery wheel (1) is driven to obtain relative to leaf basin (5) separately, blade back (6), the movement locus of blade inlet edge (8) and trailing edge (9), four componental movement tracks can be carried out combining thus complete the emery wheel longitudinal grinding movement locus (7) in blade holotype face, also can be used alone, complete leaf basin (5), blade back (6), the grinding of blade inlet edge (8) and trailing edge (9).
Step 4: emery wheel is High Rotation Speed under the driving of machine tool chief axis, and move according to the movement locus of lathe three-shaft linkage interpolation, thus realize the three-shaft linkage interpolation cantilever grinding of blade profile.
Blade cantilever grinding processing method installation way is simple, and cost is low, can reduce the multinomial factor forming blade clamping deformation and machining deformation, ensures crudy; Utilize the three-shaft linkage interpolation of Digit Control Machine Tool, the geometric accuracy of blade profile can be ensured, for three axis numerically controlled machine machining high-precision blade provides a kind of effective method, can effectively reduce blade processing cost.Also can increase substantially efficiency and the precision of four-axle linked lathe and five-axis linkage machine tools machining blade simultaneously.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (1)
1. utilize a blade cantilever grinding processing method for three-shaft linkage interpolation, it is characterized in that: the method concrete steps are as follows:
Step one: according to the version of the structure type of lathe, motion mode and blade, determine the grinding method of blade profile, and select the relative installation of blade on platen;
Step 2: by the reference for installation of the single-ended clamping blade tenon of fixture or blade, blade is fixed on the workbench of lathe securely, needs the blade profile part of processing to keep cantilever position on Digit Control Machine Tool;
Step 3: three machine tool motion axles and the emery wheel of choosing applicable blade profile grinding carry out numerical control program establishment, drive X, Y, Z tri-linear motion axis of lathe or X-axis, Z axis, C axle or Y-axis, Z axis, C axle to carry out three axle moving interpolations by numerical control program, thus define emery wheel transverse grinding movement locus, emery wheel longitudinal grinding movement locus that blade grinding adds man-hour;
Wherein, drive emery wheel acquisition relative to the emery wheel transverse grinding movement locus of blade, thus form the transverse grinding processing in blade holotype face;
Drive emery wheel to obtain separately movement locus relative to leaf basin, blade back, blade inlet edge and trailing edge, four componental movement tracks are carried out combining thus completes the emery wheel longitudinal grinding movement locus in blade holotype face;
Step 4: emery wheel is High Rotation Speed under the driving of machine tool chief axis, and move according to the movement locus of lathe three-shaft linkage interpolation, thus realize the three-shaft linkage interpolation cantilever grinding of blade profile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310009069.6A CN103100950B (en) | 2013-01-10 | 2013-01-10 | Cantilever grinding machining method for vane using three-axis linkage interpolation |
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| CN201310009069.6A CN103100950B (en) | 2013-01-10 | 2013-01-10 | Cantilever grinding machining method for vane using three-axis linkage interpolation |
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| CN103100950A CN103100950A (en) | 2013-05-15 |
| CN103100950B true CN103100950B (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008836A1 (en) * | 2015-07-13 | 2017-01-19 | Rollomatic Sa | Grinding machine and method for machining a workpiece |
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| CN103273404B (en) * | 2013-06-06 | 2015-02-11 | 萍乡市德博科技发展有限公司 | Method for machining variable-section nozzle ring blade of turbocharger |
| CN103317415A (en) * | 2013-07-04 | 2013-09-25 | 北京航空航天大学 | Grinding method for impeller profile processing |
| CN103894905B (en) * | 2014-04-01 | 2016-04-20 | 西北工业大学 | Blade intake and exhaust limit numerical control polishing method |
| CN104440464A (en) * | 2014-12-01 | 2015-03-25 | 北京航空航天大学 | Method for three-axis linked double-spindle symmetric cantilever grinding machining of blade |
| CN104858747B (en) * | 2015-05-07 | 2017-04-19 | 北京航空航天大学 | Bi-directional inverted grinding method for full molded surface of blade with two ends having tip shrouds |
| CN104924181B (en) * | 2015-05-07 | 2017-08-15 | 北京航空航天大学 | A kind of utilization circular cylindrical coordinate three-shaft linkage lathe realizes the method and apparatus with the full profile grinding of tenon blade |
| CN106271975B (en) * | 2015-05-25 | 2018-08-24 | 西安航空动力股份有限公司 | A kind of aeroturbine guide vane listrium grinding wheel for grinding and its method for grinding |
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2013
- 2013-01-10 CN CN201310009069.6A patent/CN103100950B/en not_active Expired - Fee Related
Patent Citations (6)
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| SU1194655A1 (en) * | 1984-05-22 | 1985-11-30 | Институт Проблем Машиностроения Ан Усср | Device for machining curvilinear surfaces |
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