CN1169652C - Method for controlling concavo-convex appearance on the working surface when processing round head by milling cutter - Google Patents
Method for controlling concavo-convex appearance on the working surface when processing round head by milling cutter Download PDFInfo
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- CN1169652C CN1169652C CNB021512841A CN02151284A CN1169652C CN 1169652 C CN1169652 C CN 1169652C CN B021512841 A CNB021512841 A CN B021512841A CN 02151284 A CN02151284 A CN 02151284A CN 1169652 C CN1169652 C CN 1169652C
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- milling cutter
- concavo
- millimeter
- speed
- cutting edge
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Abstract
The present invention relates to a method for controlling concave-convex patterns on workpiece surfaces when ball face milling cutters process, which belongs to the field of mechanical process technology. For numerically controlled machine tools which have no positioning functions in the circumferential direction, the present invention controls cutting edge phase differences of milling cutters in the processing by controlling the moving distance of the milling cutters of the numerically controlled machine tool under the condition of not changing the rotating speed and the moving speed of main shafts, so that ideal concave-convex patterns on workpiece surfaces are obtained. The method of the present invention can be adopted to obtain regular concave-convex patterns on workpiece surfaces; the processing surfaces can have the advantages of long service life, low friction resistance and low roughness, and especially when the cutter edge phase difference is 0 DEG C, the surface roughness reaches a minimum value; compared with irregular concave-convex patterns on workpiece surfaces, the surface roughness is lowered by 30 to 40 %.
Description
Technical field
What the present invention relates to is the concavo-convex apperance control method of a kind of surface of the work, and particularly a kind of rose cutter adds the concavo-convex apperance control method of surface of the work in man-hour, belongs to the mechanical processing technique field.
Background technology
In numerical control milling processing, in order to improve working (machining) efficiency, when continuing to increase the speed of mainshaft, also constantly improve feed speed, promptly improve the amount of feeding (the following amount of feeding with each commentaries on classics of main shaft abbreviates " feed rate " as) of each commentaries on classics of main shaft.Abroad the feed rate that adopts when cutting sometimes even reach 0.4-0.5 millimeter/commentaries on classics.Find that by literature search the bright people of grade of Zhao Akatsuki is in " accurate engineering Hui Chi " (Japan), 1998, write articles " 5 Shaft systems are driven the ボ one Le エ Application De ミ Le processing To お け Ru thick さ in surface and given birth to into Machine Agencies (surface roughness formation mechanism during 5 coordinate digital control processings of use rose cutter) " on 64 (12) 1826-1830, if this article proposes to use rose cutter, and when the feed rate of main shaft is big, the pit that the finished surface of processing method up to now shows as on the axis feeding direction one by one links to each other, and look up from index(ing) feed side, the pit interlocking, arrange unorderedly, that is to say that the concavo-convex apperance of finished surface does not have rule.Such surface is the surface roughness height not only, and the contact performance on surface is also bad.
The phase angle of certain sword of milling cutter when the original position of the i time feeding
iPhase angle during with preceding primary feed
I-1Poor (
i-
I-1) be called cutting edge orientation, use
iExpression." cutting edge orientation " when document has also proved each feed by theory parsing and Computer Simulation is the principal element that influences the concavo-convex apperance aligning method of finished surface.Occurring the pit by big-little-big-little rule variation on direction of feed, is because there is the eccentric result of revolution in main shaft in process.If the revolution off-centre of main shaft is very little, it is identical that the pit size on direction of feed also can be tending towards.If control cutting edge orientation that can be suitable in the process then can process uniform, concavo-convex apperance clocklike, then this finished surface will have the advantage that increases the service life, reduces skin-friction force and roughness.But the CNC milling machine that uses in the actual processing does not generally possess circumferential positioning function, that is to say the cutting edge orientation that can not set each feeding in process.
Summary of the invention
The objective of the invention is to fill up the vacancy of prior art, provide a kind of rose cutter to add the concavo-convex apperance control method of surface of the work in man-hour, for the CNC milling machine that does not have circumferential positioning function, displacement by control CNC milling machine milling cutter, control the cutting edge orientation of work in-process, thereby obtain the concavo-convex apperance of desirable finished surface.The present invention is achieved by the following technical solutions, and the inventive method is as follows: cutting edge orientation is decided by the displacement of the speed of mainshaft in the process, translational speed and milling cutter.For the CNC milling machine that does not have circumferential positioning function, under the constant condition of the speed of mainshaft and translational speed,, control the cutting edge orientation of milling cutter in the processing, thereby obtain the concavo-convex apperance of desirable finished surface by the displacement of control CNC milling machine milling cutter.
Below the inventive method is further described specific as follows:
Milling cutter has been finished the track of one-period motion and is in the process: milling cutter at first sends distance L to
a, to send in the process in this section, milling cutter is a cutting workpiece, milling cutter lifts distance L then
b, backway L
c, move forward into to line-spacing L to the next door
d, fall distance L again
e, establishing the starting point of milling cutter when twice feeding is A and B, then the displacement between A, the B is L
aMillimeter, L
bMillimeter, L
cMillimeter, L
dMillimeter and L
eThe millimeter sum is when milling cutter is respectively v these 5 translational speeds that move section
aMm/min, v
bMm/min, v
cMm/min, v
dMm/min and v
eMm/min, when the speed of mainshaft is n rev/min,
Milling cutter needed time T between twice feeding is:
The revolution that milling cutter is turned between twice feeding is:
M=Tn=M
1M
2(commentaries on classics) (2)
The revolution M that milling cutter turns over is an arithmetic number, wherein fractional part M
2The phase difference of same blade when then being twice feeding in front and back.
Therefore, the cutting edge orientation ω during twice feeding in front and back is:
ω＝360×M
2(°) (3)
By the above as can be known, at speed of mainshaft n and feed speed v
a, v
b, v
c, v
dAnd v
eUnder the constant condition, by adjusting the displacement L of milling cutter
a, L
b, L
c, L
dAnd L
e, can adjust the cutting edge orientation ω of process, its result can obtain the concavo-convex apperance of needed finished surface.
Milling machine that the inventive method adopts is high-precision CNC milling machine, if used CNC milling machine can not be correctly according to the speed of mainshaft of setting and feed speed motion, even adjusted the displacement of milling cutter according to preceding method, also may can not get wanting concavo-convex apperance.Therefore, used CNC milling machine must be high-precision.
Adopt the inventive method can access the concavo-convex apperance of finished surface clocklike.This has following 3 advantages for finished surface: (1) prolongs surface service life: if should the surface be die surface, then can make die surface in conjunction with the time more become evenly, thereby increase the wearability of die surface, increase the service life; (2) reduce surperficial frictional resistance: if should the surface be guide pass, except that the uniformity that increases combination, also can utilize these pits storage lubricating oil, reduce the frictional resistance of guide rail; (3) reduce surface roughness: when machining condition is identical, uniform, clocklike concavo-convex apperance is littler than the surface roughness of random concavo-convex apperance, especially when cutting edge orientation is 0 °, surface roughness will reach minimum of a value, descend 30%～40% than random surface roughness.
Description of drawings
Fig. 1 is an operation principle schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, in reality processing, owing to the distance L of sending to of milling cutter 1
a, backway L
cAnd feeding line-spacing L
dBe changeless, so, the cutter lifting distance L can only be used
bWith the feed distance L
eAdjust the displacement of milling cutter, and the cutter lifting distance L
bWith the feed distance L
eEquate, that is to say the concavo-convex apperance that to utilize the size of adjusting the cutter lifting distance to obtain wanting.
Workpiece 2 materials: brass; Milling cutter 1 material: 5 millimeters of whole hard alloy, milling cutter 1 radiuses; 0.2 millimeter of the depth of cut; Speed of mainshaft n=250 rev/min; 15 ° at milling cutter 1 angle of inclination; Climb cutting; Feed speed v
a=v
b=v
c=v
d=v
e=250 mm/min; L
a=L
c=100 millimeters, L
d=0.5 millimeter.
(a) work as L
b=L
eIn the time of=0.750 millimeter, try to achieve cutting edge orientation ω=0 ° by formula (1)-formula (3), according to actual processing result, the pit of machined surface is corresponding up and down neat, the roughness minimum of this kind finished surface.
(b) work as L
b=L
eIn the time of=0.875 millimeter, try to achieve cutting edge orientation ω=90 ° by formula (1)-formula (3), according to actual processing result, the pit of machined surface has a dislocation forward, and surface roughness is bigger than cutting edge orientation ω=0 °.
(c) work as L
b=L
eIn the time of=1.000 millimeters, try to achieve cutting edge orientation ω=180 ° by formula (1)-formula (3), according to actual processing result, the arrangement of pit is just opposite during twice feeding in front and back.That is to say, currently once be " big → little → big → little " when arranging, after once promptly be that " little → big → little → big " arranges.Certainly, when main shaft does not exist revolution eccentric, pit will be the same size, and at this moment, the concavo-convex apperance of the concavo-convex apperance of cutting edge orientation ω=180 ° and ω=0 ° is the same.
(d) work as L
b=L
eIn the time of=1.125 millimeters, try to achieve cutting edge orientation ω=270 ° by formula (1)-formula (3), according to actual processing result, the pit of machined surface has a dislocation backward.
Claims (2)
1, a kind of rose cutter adds the concavo-convex apperance control method of surface of the work in man-hour, it is characterized in that for the CNC milling machine that does not have circumferential positioning function, under the constant condition of the speed of mainshaft and translational speed, displacement by control CNC milling machine milling cutter (1), control the cutting edge orientation of milling cutter in the processing (1), thereby obtain the concavo-convex apperance of desirable finished surface.
2, processing method according to claim 1 is characterized in that method is specific as follows: the track that milling cutter in the process (1) has been finished the one-period motion is: milling cutter (1) is at first sent distance L to
a, milling cutter (1) lifts distance L then
b, backway L
c, move forward into to line-spacing L to the next door
d, fall distance L again
e, establishing the starting point of milling cutter (1) when twice feeding is A and B, then the displacement between A, the B is L
aMillimeter, L
bMillimeter, L
cMillimeter, L
dMillimeter and L
eThe millimeter sum is when main shaft is respectively v these 5 translational speeds that move section
aMm/min, v
bMm/min, v
cMm/min, v
dMm/min n and v
eMm/min, when the speed of mainshaft is n rev/min,
Milling cutter (1) needed time T between twice feeding is:
The revolution that milling cutter (1) is turned between twice feeding is:
M=Tn=M
1.M
2(commentaries on classics)
The revolution M that milling cutter (1) turns over is an arithmetic number, wherein fractional part M
2The phase difference of same blade when then being twice feeding in front and back.
Before and after cutting edge orientation ω during twice feeding be:
ω＝360×M
2(°)
At speed of mainshaft n and feed speed v
a, v
b, v
c, v
dAnd v
eUnder the constant condition, by adjusting the displacement L of milling cutter (1)
a, L
b, L
c, L
dAnd L
e, can adjust the cutting edge orientation ω of process, its result can obtain the concavo-convex apperance of needed finished surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021512841A CN1169652C (en) | 2002-12-12 | 2002-12-12 | Method for controlling concavo-convex appearance on the working surface when processing round head by milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021512841A CN1169652C (en) | 2002-12-12 | 2002-12-12 | Method for controlling concavo-convex appearance on the working surface when processing round head by milling cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415448A CN1415448A (en) | 2003-05-07 |
| CN1169652C true CN1169652C (en) | 2004-10-06 |
Family
ID=4751970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021512841A Expired - Fee Related CN1169652C (en) | 2002-12-12 | 2002-12-12 | Method for controlling concavo-convex appearance on the working surface when processing round head by milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1169652C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5252102B1 (en) * | 2012-04-03 | 2013-07-31 | 株式会社安川電機 | Motor control device, motor control system, and cutting device |
| CN103111907B (en) * | 2012-12-31 | 2018-01-23 | 深圳市配天智造装备股份有限公司 | The localization method of rotary axis of machine tool |
| CN104625091A (en) * | 2014-12-15 | 2015-05-20 | 贵州黎阳国际制造有限公司 | Processing method for concentric circle line with surface roughness ranging from Ra 0.1 to Ra 0.4 |
| CN107160239B (en) * | 2017-05-09 | 2019-02-01 | 西北工业大学 | Ball head knife becomes the Multi-axis Machining method of cutter axis orientation control tool wear |
-
2002
- 2002-12-12 CN CNB021512841A patent/CN1169652C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1415448A (en) | 2003-05-07 |
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