CN102350522A - Processing method of numerical control milling machine with tiltable main shaft - Google Patents
Processing method of numerical control milling machine with tiltable main shaft Download PDFInfo
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- CN102350522A CN102350522A CN2011101828468A CN201110182846A CN102350522A CN 102350522 A CN102350522 A CN 102350522A CN 2011101828468 A CN2011101828468 A CN 2011101828468A CN 201110182846 A CN201110182846 A CN 201110182846A CN 102350522 A CN102350522 A CN 102350522A
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- cutter
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- main shaft
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Abstract
The invention puts forward a processing method of a numerical control milling machine with a tiltable main shaft. The method comprises the steps of: clamping a workpiece to be processed on the machine, then rotating the main shaft of the machine and verifying a rotation angle, determining a tool position point path for tool machining according to requirements, and on the basis of different tool shapes, shifting the numerical control program tool position point from the tool vertex to the lowest point of the tool, and conducting tool length change compensation treatment, then ending the processing process. With the method of the invention, processing tasks that are not accomplishable in original common numerical control milling machines can be realized by a numerical control milling machine with a tiltable main shaft, and the cost is substantially reduced compared to a five-axis machining center structure.
Description
Technical field
The present invention relates to field of machining, be specially a kind of processing method of tiltable main shaft CNC milling machine.
Background technology
Integrated members such as blisk, impeller and integrated jet nozzle ring provide guarantee for enhancing product performance, but also manufacturing technology have been proposed challenge simultaneously.The efficient high-quality manufacturing of integrated member the most effectively way is digital control processing; Owing to will be subjected to blocking of constraint of inside and outside listrium and front and back blade man-hour adding; The opening character that causes processing is very poor; The processing constraint is many; Therefore the processing that will accomplish these integral structure components fully must employing can make the lathe of main shaft inclination, otherwise will cause some position not process.The Digit Control Machine Tool that present main shaft can tilt only limits to five coordinate machining centers, so the processing of these integrated members must be adopted five coordinate machining center equipment.But five coordinate machining center equipment purchase expenses are too high, and needs 3,000,000～1,000 ten thousand yuan cause that equipment is rare, processing charges increases, and the production cost is risen.
In order to cut down finished cost; On the basis of general NC milling machine, transformed out the CNC milling machine of tiltable main shaft; Its characteristics are can be according to processing request, and the machining spindle with milling machine under stopped status tilts, and realizes the processing tasks that script general NC milling machine can't be accomplished.This tiltable main shaft CNC milling machine reduces than five coordinate machining center costs greatly; But because main shaft tilts; Main shaft is that reference axis is no longer parallel with machining coordinate, makes that numerical-control processing method wherein is different with the processing method of former general NC milling machine, needs the new processing method of redesign.The main distinction of general NC milling machine process and tiltable main shaft CNC milling machine process is:
(1) all be to adopt cutter location contact tool setting point in digital control processing; The cutter location coordinate that provides in the general NC system all is the top coordinate of tool axis; But tiltable main shaft CNC milling machine can cause cutter location to be difficult to contact tool setting point because the general NC system is adopted in the inclination of cutter shaft.
(2) in machining coordinate system, the variation of general NC milling machine tool length only relates to cutter axis orientation Z coordinate, and the variation of tiltable main shaft CNC milling machine tool length then will relate to Z, two coordinates of X.
Summary of the invention
The technical problem that solves
For solving the problem that lacks tiltable main shaft CNC milling machine processing method in the prior art, the present invention proposes a kind of processing method of tiltable main shaft CNC milling machine.
Technical scheme
The objective of the invention is to propose a kind of processing method of tiltable main shaft CNC milling machine, handle and the tool length compensation method comprising tiltable main shaft CNC milling machine cutter location file is rearmounted.
Technical scheme of the present invention is:
The processing method of said a kind of tiltable main shaft CNC milling machine is characterized in that: may further comprise the steps:
Step 1: clamping workpiece to be processed on lathe; According to processing request machine tool chief axis is tilted around lathe coordinate system Y direction, and adopt sine gauge checking angle of inclination;
Step 2: convert the cutter location in the digital control system into the cutter minimum point by cutter point of a knife point, conversion method is:
A, flat cutter:
B, ball head knife:
C, endless knife:
Wherein, X ', y ', z ' are the coordinate of cutter minimum point in machining coordinate system, and x, y, z are cutter point of a knife point coordinates, and α is the angle of inclination of machine tool chief axis around lathe coordinate system Y direction; Machining coordinate is that three direction of principal axis are corresponding parallel with lathe coordinate system three direction of principal axis, r
CutterBe tool radius, r
1Be endless knife side edge radius;
Step 3: in digital control system, carry out the tool length compensation:
Step a: at machine tool chief axis handle of a knife installation code ball, and the machine tool chief axis handle of a knife moved along lathe coordinate system Z direction, make the standard ball contact workpiece, in digital control system, read lathe control point coordinate (x in lathe coordinate system
0, y
0, z
0);
Step b: at machine tool chief axis handle of a knife mounting cutter, and the machine tool chief axis handle of a knife moved along lathe coordinate system Z direction, make the cutter contact workpiece, in digital control system, read lathe control point coordinate (x in lathe coordinate system
1, y
1, z
1);
Step c:, confirm that the tool length compensation rate of Z direction in the machining coordinate system does according to the coordinate that step a and step b obtain | z
1-z
0|, the compensation rate of directions X is in the machining coordinate system: ball head knife: (z
1-z
0+ r
Ball-r
Cutter) tan α; Flat cutter: (z
1-z
0+ r
Ball-r
Cutter/ sin α) tan α; Endless knife: (z
1-z
0+ r
Ball-r
Cutter/ sin α+r
1/ cos α-r
1) tan α; R wherein
BallBe the standard ball radius;
Step 4: the cutter location path of confirming cutter processing according to processing request;
Step 5: after the cutter location conversion of process step 2 and the tool length compensation deals of step 3; Operation tiltable main shaft CNC milling machine is processed workpiece; After accomplishing processing; Close tiltable main shaft CNC milling machine; Again machine tool chief axis is tilted around lathe coordinate system Y direction according to new processing request; And adopting sine gauge checking angle of inclination, repeating step 2-step 5 is until processing whole work-piece.
The processing method of described a kind of tiltable main shaft CNC milling machine, after machining, the cutter lifting process of cutter is retreated along cutter axis orientation for the control cutter.
Beneficial effect
Adopt this method can realize the processing of tiltable main shaft CNC milling machine, and can realize that the numerical control program cutter location is by conversion and the tool length compensating for variations processing of cutter summit to the cutter minimum point according to the different cutters shape.Use this method to realize the processing tasks that script general NC milling machine can't be accomplished through tiltable main shaft CNC milling machine, required expense also reduces than five coordinate machining centers greatly simultaneously.
Description of drawings
Fig. 1: the long compensation deals sketch map of conversion of ball head knife cutter location and cutter
Fig. 2: flat cutter cutter location conversion and the long compensation deals sketch map of cutter
Fig. 3: the long compensation deals sketch map of conversion of endless knife cutter location and cutter
Wherein, 1-cutter shaft line, 2-standard ball rod axis, the spherical cutter of 3-, the flat cutter of 4-, 5-endless knife.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described:
This embodiment is for to process the blade in the blisk; Owing to block each other between the blade of blisk, make the general NC lathe can't be worked into whole blade, and processing cost be limited; Can't adopt five coordinate machining centers, so adopt tiltable main shaft CNC milling machine to process.
Step 1: the blisk clamping on tiltable main shaft CNC milling machine work top, is tilted machine tool chief axis according to processing request around lathe coordinate system Y direction, and adopt sine gauge checking angle of inclination.
Step 2: the rearmounted processing of cutter location file of carrying out tiltable main shaft CNC milling machine; The cutter location that is about in the digital control system converts the cutter minimum point into by cutter point of a knife point; And convert file format into file that digital control system can be discerned operation; For the different cutters type, cutter location is different by the method that cutter point of a knife point converts the cutter minimum point into:
A, like accompanying drawing 2, the cutter location of flat cutter conversion:
B, like accompanying drawing 1, the cutter location of ball head knife conversion:
C, like accompanying drawing 3, the cutter location of endless knife conversion:
Wherein, x ', y ', z ' are the coordinate of cutter minimum point in machining coordinate system, and x, y, z are cutter point of a knife point; It is cutter shaft line apex coordinate; α is the angle of inclination of machine tool chief axis around lathe coordinate system Y direction, and machining coordinate is that three direction of principal axis are corresponding parallel with lathe coordinate system three direction of principal axis, r
CutterBe tool radius, r
1Be endless knife side edge radius.
Step 3: because the compensating for variations of tiltable main shaft CNC milling machine tool length relates to the coordinate of Z, X both direction in the machining coordinate system, so that compensation deals mode that tool length changes and general NC milling machine have is more different, concrete grammar is:
Step a: at machine tool chief axis handle of a knife installation code ball; And the machine tool chief axis handle of a knife moved along lathe coordinate system Z direction; Make standard ball contact blade surface to be processed; The Z direction coordinate of contact point this moment in machining coordinate system is 0, in digital control system, reads lathe control point coordinate (x in lathe coordinate system
0, y
0, z
0);
Step b: at machine tool chief axis handle of a knife mounting cutter; And the machine tool chief axis handle of a knife moved along lathe coordinate system Z direction; Make the same contact of cutter blade surface to be processed; The Z direction coordinate of contact point this moment in machining coordinate system is 0 also, in digital control system, reads lathe control point coordinate (x in lathe coordinate system
1, y
1, z
1);
Step c:, confirm that the tool length compensation rate of Z direction in the machining coordinate system does according to the coordinate that step a and step b obtain | z
1-z
0|, the compensation rate of directions X is different and different according to tool category in the machining coordinate system, wherein: ball head knife: (z
1-z
0+ r
Ball-r
Cutter) tan α; Flat cutter: (z
1-z
0+ r
Ball-r
Cutter/ sin α) tan α; Endless knife: (z
1-z
0+ r
Ball-r
Cutter/ sin α+r
1/ cos α-r
1) tan α; R wherein
BallBe the standard ball radius.
Step 4: according to processing request confirm the cutter location path of cutter processing, the cutter location path here be exactly add man-hour cutter with the cutter spacing contact point path of blade reality.
Step 5: after accomplishing above-mentioned cutter location conversion and the processing of tool length compensating for variations; Operation tiltable main shaft CNC milling machine is processed blade; After accomplishing one section processing; Close tiltable main shaft CNC milling machine; Again machine tool chief axis is tilted to new angle around lathe coordinate system Y direction according to new processing request; And adopting sine gauge checking angle of inclination, repeating step 2-step 5 is until processing whole blade.
In order to guarantee that processing the back cutter can not interfere with other blades of blisk in the cutter lifting process, the cutter lifting process of cutter is retreated along cutter axis orientation for the control cutter.
Claims (2)
1. the processing method of a tiltable main shaft CNC milling machine is characterized in that: may further comprise the steps:
Step 1: clamping workpiece to be processed on lathe; According to processing request machine tool chief axis is tilted around lathe coordinate system Y direction, and adopt sine gauge checking angle of inclination;
Step 2: convert the cutter location in the digital control system into the cutter minimum point by cutter point of a knife point, conversion method is:
A, flat cutter:
B, ball head knife:
C, endless knife:
Wherein, X ', y ', z ' are the coordinate of cutter minimum point in machining coordinate system, and x, y, z are cutter point of a knife point coordinates, and α is the angle of inclination of machine tool chief axis around lathe coordinate system Y direction; Machining coordinate is that three direction of principal axis are corresponding parallel with lathe coordinate system three direction of principal axis, r
CutterBe tool radius, r
1Be endless knife side edge radius;
Step 3: in digital control system, carry out the tool length compensation:
Step a: at machine tool chief axis handle of a knife installation code ball, and the machine tool chief axis handle of a knife moved along lathe coordinate system Z direction, make the standard ball contact workpiece, in digital control system, read lathe control point coordinate (x in lathe coordinate system
0, y
0, z
0);
Step b: at machine tool chief axis handle of a knife mounting cutter, and the machine tool chief axis handle of a knife moved along lathe coordinate system Z direction, make the cutter contact workpiece, in digital control system, read lathe control point coordinate (x in lathe coordinate system
1, y
1, z
1);
Step c:, confirm that the tool length compensation rate of Z direction in the machining coordinate system does according to the coordinate that step a and step b obtain | z
1-z
0|, the compensation rate of directions X is in the machining coordinate system: ball head knife: (z
1-z
0+ r
Ball-r
Cutter) tan α; Flat cutter: (z
1-z
0+ r
Ball-r
Cutter/ sin α) tan α; Endless knife: (z
1-z
0+ r
Ball-r
Cutter/ sin α+r
1/ cos α-r
1) tan α; R wherein
BallBe the standard ball radius;
Step 4: the cutter location path of confirming cutter processing according to processing request;
Step 5: after the cutter location conversion of process step 2 and the tool length compensation deals of step 3; Operation tiltable main shaft CNC milling machine is processed workpiece; After accomplishing processing; Close tiltable main shaft CNC milling machine; Again machine tool chief axis is tilted around lathe coordinate system Y direction according to new processing request; And adopting sine gauge checking angle of inclination, repeating step 2-step 5 is until processing whole work-piece.
2. the processing method of a kind of tiltable main shaft CNC milling machine according to claim 1 is characterized in that: after machining, the cutter lifting process of cutter is retreated along cutter axis orientation for the control cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110182846 CN102350522B (en) | 2011-06-30 | 2011-06-30 | Processing method of numerical control milling machine with tiltable main shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110182846 CN102350522B (en) | 2011-06-30 | 2011-06-30 | Processing method of numerical control milling machine with tiltable main shaft |
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| CN102350522A true CN102350522A (en) | 2012-02-15 |
| CN102350522B CN102350522B (en) | 2013-02-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111650A (en) * | 2013-01-25 | 2013-05-22 | 西北工业大学 | Processing method for drilling of numerical control milling machine capable of inclining main shaft |
| CN103223629A (en) * | 2013-05-13 | 2013-07-31 | 大连大森数控技术发展中心有限公司 | Compensation method for machining cutter of numerically-controlled machine tool |
| CN103302592A (en) * | 2013-06-08 | 2013-09-18 | 西北工业大学 | Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface |
| TWI568528B (en) * | 2014-11-06 | 2017-02-01 | 財團法人工業技術研究院 | Cutting tool controller and controlling method thereof |
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| JPH0885046A (en) * | 1994-07-13 | 1996-04-02 | Hitachi Ltd | Scroll working method and device, and scroll compressor |
| CN2933671Y (en) * | 2006-08-18 | 2007-08-15 | 江苏齐航数控机床有限责任公司 | Numerically controlled fraise machine milling head for manufacturing special-shaped screw rod |
| WO2010006768A1 (en) * | 2008-07-15 | 2010-01-21 | Open Mind Technologies Ag | Method for producing a prefabricated part from an unmachined part by means of a milling tool |
| FR2916664B1 (en) * | 2007-05-28 | 2010-01-22 | Huron Granffenstaden Sas | HIGH-PRECISION MULTIAXIS MACHINING CENTER COMPRISING AT LEAST TWO ROTARY PILOT AXES AT A MULTIPLE TABLE |
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2011
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Patent Citations (4)
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| JPH0885046A (en) * | 1994-07-13 | 1996-04-02 | Hitachi Ltd | Scroll working method and device, and scroll compressor |
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Non-Patent Citations (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111650A (en) * | 2013-01-25 | 2013-05-22 | 西北工业大学 | Processing method for drilling of numerical control milling machine capable of inclining main shaft |
| CN103223629A (en) * | 2013-05-13 | 2013-07-31 | 大连大森数控技术发展中心有限公司 | Compensation method for machining cutter of numerically-controlled machine tool |
| CN103302592A (en) * | 2013-06-08 | 2013-09-18 | 西北工业大学 | Numerically-controlled abrasive band polishing cutter axis control method for achieving effective fitting of contact wheel and moulded surface |
| TWI568528B (en) * | 2014-11-06 | 2017-02-01 | 財團法人工業技術研究院 | Cutting tool controller and controlling method thereof |
| US9772618B2 (en) | 2014-11-06 | 2017-09-26 | Industrial Technology Research Institute | Cutting tool controller and method of controlling the same |
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| Publication number | Publication date |
|---|---|
| CN102350522B (en) | 2013-02-20 |
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