CN108274206A - A kind of 3 d impeller Z-shaped feed becomes the withdrawing method of the slotting milling of axis - Google Patents
A kind of 3 d impeller Z-shaped feed becomes the withdrawing method of the slotting milling of axis Download PDFInfo
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- CN108274206A CN108274206A CN201711348550.2A CN201711348550A CN108274206A CN 108274206 A CN108274206 A CN 108274206A CN 201711348550 A CN201711348550 A CN 201711348550A CN 108274206 A CN108274206 A CN 108274206A
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- cutter
- cutter spacing
- spacing
- withdrawing
- cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
Abstract
The invention discloses a kind of 3 d impeller Z-shaped feeds to become the withdrawing method that axis inserts milling, and control module driving multiaxis cutter cuts predetermined cutter spacing line by line, and advances to the non-cutting zone of impeller surface, is cut by cutter heart point of cutter spacing；When cutting is located at the adjacent cutter spacing with a line, before this cutter spacing of Tool in Cutting, control module drives normal direction withdrawing of the cutter along this cutter spacing and next cutter spacing line and its with tool axis institute at platform, drives cutter along cutter axis orientation cutter lifting later, last feed is cut.Cutting-tool's used life can be promoted.
Description
Technical field
The present invention relates to the present invention relates to a kind of optimization of cutting process methods in digital control processing.
Background technology
Centrifugal triaxial impeller is the core component of centrifugal compressor, is widely used in metallurgy, petrochemical industry, coal chemical industry etc.
Many fields.Its processing efficiency by domestic and international many scholars extensive concern, since 3 d impeller has 70%~80% material
It is removed in roughing, roughing usually occupies 70% or more of total elapsed time.Therefore, the promotion of roughing efficiency is in weight
Weight.
Currently, more common 3 d impeller runner rough machining method have five axis side millings, 3+2 axis High Speed Milling Operation, become axis insert milling,
Dead axle inserts milling.Wherein, slotting Milling Machining is a kind of highly-efficient processing mode being just applied in recent years in 3 d impeller roughing, by
In cutter is mainly by axial force in inserting Milling Machining, and cutter is higher in axial rigidity, thus with common five axis side milling and 3
+ 2 axis High Speed Milling Operations are compared, and have more apparent advantage.
However, either dead axle inserts milling and still becomes axis and inserts milling, exists during to underthrust milling and allow knife phenomenon, current
Track when cutter lifting method is extended into knife mostly is reversely lifted, and point of a knife will certainly scratch with machined surface.Since cutter turns
Speed is higher, and cutter lifting speed, and larger injury can be caused to point of a knife, cutter life is made to fall sharply.
Invention content
The purpose of the present invention is in order to overcome the problems referred above, propose that a kind of 3 d impeller Z-shaped feed becomes the withdrawing that axis inserts milling
Method can significantly promote cutting-tool's used life.
A kind of 3 d impeller Z-shaped feed proposed by the invention becomes the withdrawing method that axis inserts milling, and control module driving is more
Axis cutter cuts predetermined cutter spacing line by line, and advances to the non-cutting zone of impeller surface, is cut by cutter heart point of cutter spacing；Cut position
When the adjacent cutter spacing of same a line, control module drive cutter along this cutter spacing and next cutter spacing line and its with tool axis institute at
The normal direction withdrawing of platform drives cutter along cutter axis orientation cutter lifting, point of a knife is avoided to scratch with workpiece machined surface later
Phenomenon, last feed cutting, so being capable of significant increase cutter life.
Description of the drawings
Fig. 1 is the intention of cutting position of the present invention.
Fig. 2 is the schematic diagram of the slotting milling numerical control program cutter spacing of the present invention.
Fig. 3 is the schematic diagram of cutter spacing cutting direction of the present invention.
Fig. 4 is the cutter lifting schematic diagram of the 1st, 2 class cutter spacing of the invention.
Fig. 5 is the cutter lifting schematic diagram of the 3rd class cutter spacing of the invention.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Diagram is closed, above-mentioned technical proposal is expanded on further.
A kind of 3 d impeller Z-shaped feed as shown in the figure becomes the withdrawing method that axis inserts milling, and step includes：
The first step, the extraction of cutter location extract the slotting milling program cutter location of original, by knife point, feed terminating point, lift
Knife point extracts cutter spacing, wherein cutter lifting point is same point with knife point, constitutes complete 3 d impeller and becomes the plug in milling cutter position of axis, inserts
The characteristics of milling numerical control program cutter spacing, is as shown in Figure 2.
Second step, the differentiation of cutter location position, 3 d impeller Z-shaped feed become axis and plug in milling cutter position layout rule such as Fig. 3 institutes
Show, the cutter spacing drawn in the figure is all to insert milling to terminate cutter spacing, eliminates knife point and cutter lifting point, the cutter spacing of identification and classification is all slotting
Milling feed terminates cutter spacing.Since impeller outlet, from right to left according to certain step pitch layout cutter spacing, after a line has been cut,
All it is therefore referred to as Z-shaped feed from right to left per a line to impeller eye direction layout cutter spacing according to certain cutting line-spacing.
According to the above rule, cutter spacing is divided into three classes：1. last cutter spacing of each cutting row, is represented by dashed line in figure 3；2. all
The last one in cutter spacing, is indicated with chain-dotted line in figure 3；3. other cutter spacing i.e. in addition to 1,2 use solid line table in figure 3
Show.During realizing without scratch cutter lifting, when calculating the withdrawing cutter spacing of current cutter spacing, first have to differentiate that current cutter location belongs to
The cutter spacing of which kind of classification.
Specifically method of discrimination is：2nd class cutter location directly takes out the last one cutter location in original program without differentiating
.For the 1st, 3 class cutter spacing differentiation with the following method：Calculate current cutter spacing between next cutter spacing at a distance from, such as distance
Cutter diameter more than one times, then current cutter location is last cutter location of the cutting row, i.e. the 1st class cutter location, conversely, then
For the 3rd class cutter location.
Third walks, and the calculating of withdrawing cutter spacing and cutter lifting cutter spacing after classifying to all cutter locations, then calculates it one by one
Withdrawing cutter spacing and cutter lifting cutter spacing, including cutter heart coordinate and generating tool axis vector.Wherein,
For the 1st, 2 class cutter locations, the calculating process of withdrawing cutter spacing is：
Such as Fig. 4, the cutter heart point of cutter spacing is respectively P, N, Q, A after current cutter spacing, previous cutter spacing, withdrawing cutter spacing, cutter lifting, when
The generating tool axis vector of preceding cutter spacing isIt is O to enable coordinate origin, then the cutter heart coordinate of withdrawing cutter spacing can be calculated with following formula：
Wherein, withdrawing distance | QP | can sets itself be as needed 0.5mm, 1mm, 2mm etc., the cutter shaft of withdrawing cutter spacing
Vector is still
The calculating process of its cutter lifting cutter spacing is：
Cutter heart coordinate can be calculated with following formula：
Wherein, d is that current cutter spacing inserts milling feed distance, and cutter location is calculated in extractable original program, ensures cutter lifting
Distance is consistent with feed distance, and the generating tool axis vector of cutter lifting cutter spacing is still
For the 3rd class cutter location, the calculating process of withdrawing cutter spacing is：
Such as Fig. 5, the cutter heart point of cutter spacing is respectively P, N, Q, A after current cutter spacing, latter cutter spacing, withdrawing cutter spacing, cutter lifting, currently
The generating tool axis vector of cutter spacing isIt is O to enable coordinate origin, then the cutter heart coordinate of withdrawing cutter spacing can be calculated with following formula：
Wherein, withdrawing distance | QP | can sets itself be as needed 0.5mm, 1mm, 2mm etc., the cutter shaft of withdrawing cutter spacing
Vector is still
The calculating process of its cutter lifting cutter spacing is：
Cutter heart coordinate can be calculated with following formula：
Wherein, d is that current cutter spacing inserts milling feed distance, and cutter location is calculated in extractable original program, ensures cutter lifting
Distance is consistent with feed distance, and the generating tool axis vector of cutter lifting cutter spacing is still
4th step, update form cutting scheme, the cutter spacing that will be calculated in above-mentioned steps, according to the rule in the first step
It is arranged after update, forms cutter location file.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (3)
1. a kind of 3 d impeller Z-shaped feed becomes the withdrawing method that axis inserts milling, which is characterized in that control module drives multiaxis cutter
Predetermined cutter spacing is cut line by line, and is advanced to the non-cutting zone of impeller surface, is cut by cutter heart point of cutter spacing；Cutting is located at same
When capable adjacent cutter spacing, before this cutter spacing of Tool in Cutting, control module drive cutter along this cutter spacing and next cutter spacing line and its
With tool axis at platform normal direction withdrawing, drive cutter along cutter axis orientation cutter lifting later, last feed cutting.
2. a kind of 3 d impeller Z-shaped feed according to claim 1 becomes the withdrawing method that axis inserts milling, which is characterized in that
The method specifically comprises the following steps-
1) extract cutter spacing, control module by preset cutter spacing sequence extract successively each cutter spacing enter knife cutter spacing, feed terminate knife
Position and cutter lifting cutter spacing form and become the plug in milling cutter position of axis；
2) position differentiates, all cutter spacing categories are added by control module-
A) cutter spacing set at last each for cutting row, control module calculate the line distance of current cutter spacing and next cutter spacing,
Add the cutter spacing that the distance is less than predetermined value；
B) cutter spacing set at last in all cutter spacing, control module add cutter spacing at last in transferred cutter spacing sequence；With
And
C) other cutter spacing set, the remaining cutter spacing of control module addition；
3) cutter spacing is calculated, control module is using O as coordinate origin, and current cutter spacing is P, previous cutter spacing is N, withdrawing cutter spacing is Q, cutter lifting
Afterwards cutter spacing be A, withdrawing distance | QP |, the generating tool axis vector of preceding cutter spacing isFurther calculate-
A) withdrawing cutter spacing, for cutter spacing set at last in cutter spacing set at last each for cutting row and all cutter spacing
The cutter heart coordinate of interior cutter spacing, withdrawing cutter spacing meets For in other cutter spacing set
Cutter spacing, the cutter heart coordinate of withdrawing cutter spacing meets
B) cutter lifting cutter spacing, it is d that current cutter spacing, which inserts milling feed distance, then for cutter spacing set and institute at last each for cutting row
There is a cutter spacing in cutter spacing set at last in cutter spacing, cutter spacing A meets after cutter liftingFor other cutter spacing
Cutter spacing in set, cutter spacing A meets after cutter lifting
4) scheme is formed, control module will calculate each cutting location data completed, update the withdrawing cutter spacing and cutter lifting knife of each cutter spacing
Position.
3. a kind of 3 d impeller Z-shaped feed according to claim 2 becomes the withdrawing method that axis inserts milling, which is characterized in that
In the discriminating step of position, preset distance value is one times of cutter diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711348550.2A CN108274206B (en) | 2017-12-15 | 2017-12-15 | Tool retracting method for Z-shaped feed variable-shaft plunge milling of ternary impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711348550.2A CN108274206B (en) | 2017-12-15 | 2017-12-15 | Tool retracting method for Z-shaped feed variable-shaft plunge milling of ternary impeller |
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| CN108274206A true CN108274206A (en) | 2018-07-13 |
| CN108274206B CN108274206B (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317735A (en) * | 2018-11-22 | 2019-02-12 | 重庆江增船舶重工有限公司 | A kind of diffuser processing method |
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| CN102085576A (en) * | 2010-12-29 | 2011-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller |
| CN102411334A (en) * | 2011-10-10 | 2012-04-11 | 上海交通大学 | Plunge milling cutter path optimization method |
| CN102601434A (en) * | 2012-03-22 | 2012-07-25 | 上海交通大学 | Method for optimizing plunge milling machining of slotting of integral impeller |
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2017
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| CN102085576A (en) * | 2010-12-29 | 2011-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller |
| CN102411334A (en) * | 2011-10-10 | 2012-04-11 | 上海交通大学 | Plunge milling cutter path optimization method |
| CN102601434A (en) * | 2012-03-22 | 2012-07-25 | 上海交通大学 | Method for optimizing plunge milling machining of slotting of integral impeller |
| CN104678893A (en) * | 2015-01-30 | 2015-06-03 | 华中科技大学 | Circumferential fixed-width cutting path planning method for rough machining of integrated impeller |
| CN104932422A (en) * | 2015-05-28 | 2015-09-23 | 江西洪都航空工业集团有限责任公司 | Numerical control program cutter path optimization method |
| CN105312835A (en) * | 2015-11-27 | 2016-02-10 | 成都飞机工业（集团）有限责任公司 | Deep cavity processing method based on titanium alloy monobloc forging component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317735A (en) * | 2018-11-22 | 2019-02-12 | 重庆江增船舶重工有限公司 | A kind of diffuser processing method |
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| CN108274206B (en) | 2020-07-07 |
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