CN110355409A - A kind of concave surface processing design method - Google Patents
A kind of concave surface processing design method Download PDFInfo
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- CN110355409A CN110355409A CN201910444247.5A CN201910444247A CN110355409A CN 110355409 A CN110355409 A CN 110355409A CN 201910444247 A CN201910444247 A CN 201910444247A CN 110355409 A CN110355409 A CN 110355409A
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- milling
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- facing cut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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Abstract
The present invention relates to plane machining technical field, specially a kind of concave surface processing design method is able to solve the insufficient problem of rigidity, reduces vibration cutting and improve machining accuracy comprising following steps: (1) determining and insert milling and facing cut scheme；(2) cutter is designed, can satisfy and insert milling and facing cut requirement；(3) residual wedge angle is calculated, determines and inserts milling number；(4) it calculates and inserts milling cutting parameter；(5) facing cut cutting parameter is calculated；(6) it calculates processing beat and programs.
Description
Technical field
The present invention relates to plane machining technical field, specially a kind of concave surface processing design method.
Background technique
Body is the part of diesel engine most critical, and processing quality is vital to performance, the reliability of complete machine；Its
The processing of middle piston cooler mounting plane is related to the cooling effect of piston, and cooling is bad to be will appear scuffing of cylinder bore and lead to piston
Connecting rod, cylinder jacket, even whole body are scrapped.The piston cooler mounting plane of six cylinders or 12 cylinder diesels usually shares at 6,
It is black skin before processing, is each the rectangle concave surface of long 74 × wide by 48 × depth 4-5；Machined surface surrounding is the skirt of cylinder jacket
Portion and main bearing seat limit the increasing of knife bar diameter dimension；And it is processed the initial planar arm length that plane leaves body
Degree reaches 437mm；Processing method originally is:
Point of a knife is crossed using the 1st the milling cutter of center Φ 30, it is first vertical to bore milling roll setting hole, deep 4-5mm；
With the 2nd the key milling cutter of Φ 30, the milling flat back and forth since roll setting hole, by each thickness of cutting 0.5mm, the amount of feeding
0.08mm/ turns, 47 ms/min of linear velocity, milling returns to origin in one week, needs to mill 8 knives altogether, because cantilever is very long, big, knife is vibrated in processing
It is unstable to have quick abrasion, precision and roughness, processing beat is up to 149.6 minutes；The process becomes the maximum of the entire production line
Bottleneck.
Summary of the invention
In order to solve existing side milling cutter because arm length leads to rigid deficiency, vibration cutting is big, concave surface machining accuracy difference
Problem, the present invention provides a kind of concave surface processing design methods, are able to solve the insufficient problem of rigidity, reduce vibration cutting and mention
High manufacturing accuracy.
Its technical solution is such that a kind of concave surface processing design method, which is characterized in that itself the following steps are included:
(1) it determines and inserts milling and facing cut scheme；
(2) cutter is designed, can satisfy and insert milling and facing cut requirement；
(3) residual wedge angle is calculated, determines and inserts milling number；
(4) it calculates and inserts milling cutting parameter；
(5) facing cut cutting parameter is calculated；
(6) it calculates processing beat and programs.
It is further characterized by number of teeth is four in step (2), and milling cutter is connected in vertical processing by lengthening extension bar
Heart main shaft, each blade and axial angle are 5 °, and the diameter of cutter is 43mm；
It in step (3), draws and calculates in CAD, set the tool position of beginning and end, then carry out inserting milling in simulation point,
Obtaining residual wedge angle height after inserting milling 5 times is 0.148mm, it is ensured that it is subsequent only to need 1 facing cut processing, determine that milling 5 times is inserted on 1 side
For the final feed number of X-direction, upper and lower 2 sides need the feed number for inserting milling to add up to 5 × 2=10 times, the knife of adjacent 2 times slotting millings
Tool center is away from for 5.043mm, i.e. the cutter coordinate value that is programmed in X-direction moving distance；Milling is inserted in simulation in the Y direction, and 1 side is most
Whole feed number is 3 times, and the side of left and right 2 needs the feed number for inserting milling to add up to 3 × 2=6 times；Residual wedge angle height is after 3 slotting millings
0.234mm, the center cutter of adjacent 2 times slotting millings are the coordinate value that cutter programs moving distance in the Y direction away from being 6.323；Most
The slotting milling number determined eventually is total up to 10+6=16 time in X, Y-direction；
In step (4), according to the cutter diameter Φ 43 of design, number of teeth 4, linear velocity V=54m/min of slotting Milling Machining, meter are determined
Calculating revolving speed is n=400rpm, amount of feeding F=40mm/min, feed of every rotation f=0.1mm/r, and feed engagement 0.025 is cut
Depth 5mm, cutting point distance 3mm are cut, feed number 16 times, keeps for the machining allowance 0.2mm of facing cut；Single inserts milling beat
12 seconds=0.2 point；
In step (5), linear velocity V=47m/min of facing cut, amount of feeding F=20mm/min, cutting depth 0.2mm are determined；Revolving speed n=
350 rpm, feed of every rotation f=0.057mm/r, feed engagement 0.014mm, feed 1 time；Beat is 4.2 points；
In step (6), 1 concave surface needs 16 vertical pitch time=16 × 0.2=3.2 point for inserting milling, and 6 the vertical of concave surface insert milling
Time=6 × 3.2=19.2 point, pitch time=1 × 4.2=4.2 point of 1 concave surface, 1 facing cut, facing cut time=6 of 6 concave surfaces
× 4.2=25.2 points, amount to 6 concave surface process time=19.2+25.2=44.4 point；Programming, X-direction insert milling 5 times × upper and lower 2 side=
10 times；Milling spacing X=5.043mm is inserted, Y-direction inserts milling 3 times × 2 side=6 time of left and right, inserts milling spacing Y=6.323mm, and Z axis is vertically inserted
Milling deep 0.2, facing cut cutter is processed 1 week, feed 1 time around concave surface.
After applying the present invention, vertically the stress of slotting milling cutter is axially that there is no the stiff problems of cutter, avoid cutter
Vibration problem caused by poor rigidity, and by calculating residual wedge angle, slotting milling number, inserting milling cutting parameter, facing cut cutting parameter
It Deng determining processing beat and programs, greatly improves the machining accuracy of product.
Detailed description of the invention
Fig. 1 is body schematic diagram to be processed；
Fig. 2 is cutter structure schematic diagram of the present invention；
Fig. 3 is Fig. 2 bottom view；
Fig. 4 is that residual wedge angle height calculates trajectory diagram.
Specific embodiment
As shown in Fig. 2 to Fig. 4, a kind of concave surface processing design method comprising following steps:
(1) it determines and inserts milling and facing cut scheme
For former Flank machining cutter long cantilever poor rigidity, thickness of cutting of poor quality, that very little must be set and repeatedly process
Problem, present invention obviates the deadly defect of side milling in the case of long cantilever, the brand-new design vertical technique for inserting milling, is cut cutter
Parameter is cut, while calculating influence of the height for inserting milling residual wedge angle to subsequent facing cut, the milling frequency is inserted by optimizing, analyzes most
Residual wedge angle height corresponding to good slotting milling number；Because inserting, the milling time is extremely short, and increase inserts milling number to rhythm very little；And
The stress of vertical slotting milling cutter is axially that there is no the stiff problems of cutter, avoid vibration caused by cutter poor rigidity and ask
Topic；New processing flow are as follows: using 1 knife, repeatedly insert milling → facing cut.
(2) cutter is designed, can satisfy and insert milling and facing cut requirement；
Size by the way that Oil injection cooling device to be installed to body concave surface is simulated, and determines the fillet of tool sharpening generation to Oil injection cooling
The best cutter diameter that the installation of device does not generate interference is Φ 43；
Cutter is connected to vertical machining centre main shaft by lengthening extension bar；The design of cutter, which has, vertical inserts the dual of milling and facing cut
Function, because milling is inserted in concave surface, chip removal is bad, and the end face of cutter need to consider enough chip spaces；The cutting angle of cutter is pressed respectively
Insert the Functional Design of milling, facing cut in end face；Number of teeth is 4；
(3) residual wedge angle is calculated, determines and inserts milling number；
According to the determining cutter diameter Φ 43 of design, the rectangle concave surface that needs are processed carries out cutting simulation with milling cutter diameter,
It determines the number for needing vertical slotting milling, reduces vertical insert as far as possible and mill remaining wedge angle height, because remaining wedge angle height is spent
Greatly, when last knife face mills, vibration cutting can be equally caused because of poor rigidity, accelerates tool wear, influence precision and thick
Rugosity；
It draws and calculates in CAD, set the tool position of beginning and end, then carry out inserting milling in simulation point, obtain 3 times and insert milling
Residual wedge angle height is 0.6mm afterwards；And residual wedge angle height is 0.148mm after 5 slotting millings, it is ensured that subsequent only to need 1 facing cut
Processing；So determining that the final feed number that milling 5 times are X-direction is inserted on 1 side；In this way, the feed number that upper and lower 2 sides need to insert milling closes
It is calculated as 5 × 2=10 times；It can obtain adjacent 2 times by marking in figure and insert the center cutters of milling away from being programmed in for 5.043 and cutter
The coordinate value of X-direction moving distance；
Similarly, milling is inserted in simulation in the Y direction, and the final feed number on 1 side is 3 times, and the feed number that the side of left and right 2 needs to insert milling is total
It is 3 × 2=6 times；Residual wedge angle height is 0.234mm after inserting milling 3 times, obtains inserting for adjacent 2 times in the cutters of milling by mark in figure
The heart is away from being 6.323；Also cutter programs the coordinate value of moving distance in the Y direction；
The slotting milling number finally determined is total up to 10+6=16 time in X, Y-direction；
(4) it calculates and inserts milling cutting parameter
According to the cutter diameter Φ 43 of design, number of teeth 4, organism material HT250+Cu+Cr determines the linear velocity of slotting Milling Machining
V=54m/min, calculating revolving speed is n=400rpm, amount of feeding F=40mm/min, feed of every rotation f=0.1mm/r, per tooth feeding
Amount is 0.025, cutting depth 5mm, cutting point distance 3mm, feed number 16 times, keeps for the machining allowance 0.2mm of facing cut；It is single
Secondary slotting milling beat is 12 seconds=0.2 point；
(5) facing cut cutting parameter is calculated
Determine linear velocity V=47m/min of facing cut, amount of feeding F=20mm/min, cutting depth 0.2mm；The rpm of revolving speed n=350, often
Turn amount of feeding f=0.057mm/r, feed engagement 0.014mm, feed 1 time；Beat is 4.2 points
(6) it calculates processing beat and programs
Beat is calculated by above-mentioned cutting parameter:
1 concave surface needs 16 vertical pitch time=16 × 0.2=3.2 point for inserting milling；
6 the vertical of concave surface insert milling time=6 × 3.2=19.2 point
Pitch time=1 × 4.2=4.2 point of 1 concave surface, 1 facing cut；
Facing cut time=6 × 4.2=25.2 point of 6 concave surfaces；
Amount to 6 concave surface process time=19.2+25.2=44.4 point；
Programming:
X-direction inserts milling 5 times × upper and lower 2 side=10 time；Insert milling spacing X=5.043mm；
Y-direction inserts milling 3 times × 2 side=6 time of left and right；Insert milling spacing Y=6.323mm；
Total vertical insert mills 16 times；Z axis vertically inserts milling deep 0.2；
Facing cut cutter processes 1 week around concave surface, and feed 1 time, what mainly the remaining wedge angle of milling and bottom surface were inserted in removal connects tool marks, with guarantor
Demonstrate,prove concave surface quality and roughness requirements；
After the above present invention, the beat for processing 6 concave surfaces is set to be reduced to 44.5 points from original 149.6 points, process time
Reduce 105.5 points, the ratio that reduces is 70.3%；Process the depth dimensions of concave surface, roughness stably reaches drawing requirement, cutter
Service life also improves 50% or more.
Claims (6)
1. a kind of concave surface processing design method, which is characterized in that itself the following steps are included:
(1) it determines and inserts milling and facing cut scheme；
(2) cutter is designed, can satisfy and insert milling and facing cut requirement；
(3) residual wedge angle is calculated, determines and inserts milling number；
(4) it calculates and inserts milling cutting parameter；
(5) facing cut cutting parameter is calculated；
(6) it calculates processing beat and programs.
2. a kind of concave surface processing design method according to claim 1, which is characterized in that number of teeth is four in step (2)
A, milling cutter connects vertical machining centre main shaft by lengthening extension bar, and each blade and axial angle are 5 °, and the diameter of cutter is
43mm。
3. a kind of concave surface processing design method according to claim 1, which is characterized in that in step (3), drawn in CAD
Figure calculates, and sets the tool position of beginning and end, then carries out inserting milling in simulation point, and it is high to obtain residual wedge angle after inserting milling 5 times
Degree is 0.148mm, it is ensured that it is subsequent only to need 1 facing cut processing, determine that the final feed number that milling 5 times are X-direction is inserted on 1 side, on
Lower 2 sides need the feed number for inserting milling to add up to 5 × 2=10 times, insert the center cutters of milling for adjacent 2 times away from for 5.043mm, i.e. knife
Tool is programmed in the coordinate value of X-direction moving distance；Milling is inserted in simulation in the Y direction, and the final feed number on 1 side is 3 times, left and right 2
Side needs the feed number for inserting milling to add up to 3 × 2=6 times；3 times insert milling after residual wedge angle height be 0.234mm, adjacent 2 times insert milling
Center cutter is the coordinate value that cutter programs moving distance in the Y direction away from being 6.323；The slotting milling number finally determined is in X, Y
Direction is total up to 10+6=16 time.
4. a kind of concave surface processing design method according to claim 1, which is characterized in that in step (4), according to design
Cutter diameter Φ 43, number of teeth 4 determine linear velocity V=54m/min of slotting Milling Machining, and calculating revolving speed is n=400rpm, feeding
Measure F=40mm/min, feed of every rotation f=0.1mm/r, feed engagement 0.025, cutting depth 5mm, cutting point distance 3mm,
Feed number 16 times, keep for the machining allowance 0.2mm of facing cut；It is 12 seconds=0.2 point that single, which inserts milling beat,.
5. a kind of concave surface processing design method according to claim 1, which is characterized in that in step (5), determine facing cut
Linear velocity V=47m/min, amount of feeding F=20mm/min, cutting depth 0.2mm；Revolving speed n=350 rpm, feed of every rotation f=
0.057mm/r, feed engagement 0.014mm, feed 1 time；Beat is 4.2 points.
6. a kind of concave surface processing design method according to claim 1, which is characterized in that in step (6), 1 concave surface is needed
Vertical insert of 16 vertical pitch time=16 × 0.2=3.2 point for inserting milling, 6 concave surfaces mills time=6 × 3.2=19.2 point, and 1
Pitch time=1 × 4.2=4.2 point of 1 facing cut in concave surface, facing cut time=6 × 4.2=25.2 point of 6 concave surfaces, total 6 are recessed
Face process time=19.2+25.2=44.4 point；Programming, X-direction insert milling 5 times × upper and lower 2 side=10 time；Slotting milling spacing X=
5.043mm, Y-direction insert milling 3 times × 2 side=6 time of left and right, insert milling spacing Y=6.323mm, and Z axis vertically inserts milling deep 0.2, facing cut cutter
It is processed 1 week, feed 1 time around concave surface.
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| CN201910444247.5A CN110355409A (en) | 2019-05-27 | 2019-05-27 | A kind of concave surface processing design method |
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| CN201910444247.5A CN110355409A (en) | 2019-05-27 | 2019-05-27 | A kind of concave surface processing design method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174529A (en) * | 1995-01-30 | 1998-02-25 | 钴碳化钨硬质合金公司 | Plunge and face milling cutter with universal insert seats |
| CN101579808A (en) * | 2008-11-07 | 2009-11-18 | 河南省西峡汽车水泵股份有限公司 | Method for processing waist-shaped hole |
| CN102411334A (en) * | 2011-10-10 | 2012-04-11 | 上海交通大学 | Plunge milling 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 |
| CN105642976A (en) * | 2014-11-14 | 2016-06-08 | 江西昌河航空工业有限公司 | Numerical control machining method of T-type groove for aluminum alloy part |
| CN105701323A (en) * | 2016-03-23 | 2016-06-22 | 华中科技大学 | Plunge milling machining cutting force predicting and modeling method |
| CN206104991U (en) * | 2016-10-10 | 2017-04-19 | 上海泰锋精密刀具股份有限公司 | Milling cutter is inserted to terminal surface |
-
2019
- 2019-05-27 CN CN201910444247.5A patent/CN110355409A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174529A (en) * | 1995-01-30 | 1998-02-25 | 钴碳化钨硬质合金公司 | Plunge and face milling cutter with universal insert seats |
| CN101579808A (en) * | 2008-11-07 | 2009-11-18 | 河南省西峡汽车水泵股份有限公司 | Method for processing waist-shaped hole |
| CN102411334A (en) * | 2011-10-10 | 2012-04-11 | 上海交通大学 | Plunge milling cutter path optimization method |
| CN105642976A (en) * | 2014-11-14 | 2016-06-08 | 江西昌河航空工业有限公司 | Numerical control machining method of T-type groove for aluminum alloy part |
| 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 |
| CN105701323A (en) * | 2016-03-23 | 2016-06-22 | 华中科技大学 | Plunge milling machining cutting force predicting and modeling method |
| CN206104991U (en) * | 2016-10-10 | 2017-04-19 | 上海泰锋精密刀具股份有限公司 | Milling cutter is inserted to terminal surface |
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Application publication date: 20191022 |