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P Steel (3)
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P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(3)
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P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(3)
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P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(3)
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P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(3)
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P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(3)
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P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(3)
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P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(3)
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M Stainless Steel (3)
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M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(3)
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M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(3)
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M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(3)
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K Cast Iron (3)
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K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(3)
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K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(3)
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K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(3)
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H Hardened Materials (3)
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H1Hardened Materials 44-48 HRC(3)
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SAP Material Number | ISO Catalog Number | ANSI Catalog Number | Grade | TPI | [D] Insert IC Size | [D] Insert IC Size | [LI] Insert Length | [LI] Insert Length | [W] Cutting Width | [W] Cutting Width | Number of Teeth | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2429570 | STN1118NPTF | STN1118NPTF | KC635M | 18 | 6.3500 | .2500 | 10.9220 | .4300 | 9.9060 | .3900 | 7 |
|
2429572 | STN16115NPTF | STN16115NPTF | KC635M | 11.5 | 9.5250 | .3750 | 16.0020 | .6300 | 13.2080 | .5200 | 6 |
|
2429571 | STN1614NPTF | STN1614NPTF | KC635M | 14 | 9.5250 | .3750 | 16.0020 | .6300 | 14.4780 | .5700 | 8 |
|
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Grades
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KC635M
Universal carbide grade with PVD coating (TiAlN). KC635M is a high-performance grade for finishing operations. This grade is characterised by high hardness and wear resistance.
PMKH
TM25 Inserts
Materials | Brinell | surface speeds | indexable inserts | |
steel | HB | KC610M | KC635M | feed fz (IPT) |
P1 | 125 | 100–210 | 90–180 | 0,05–0,20 |
P2 | 180 | 100–170 | 90–160 | 0,05–0,20 |
P3 | 225 | 60–130 | 70–115 | 0,05–0,20 |
P4 | 250 | 80–150 | 80–160 | 0,05–0,20 |
P5 | 275 | 75–130 | 80–160 | 0,05–0,15 |
P6 | 325 | 70–110 | 60–100 | 0,05–0,10 |
stainless steel | ||||
M1 | 180 | 100–170 | 120–180 | 0,05–0,10 |
M2 | 250 | 70–140 | 100–140 | 0,05–0,10 |
M3 | 330 | 70–120 | 100–120 | 0,05–0,10 |
cast iron | ||||
K1 | 180 | 60–130 | 100–120 | 0,02–0,08 |
K2 | 220 | 60–125 | 80–100 | 0,05–0,15 |
K3 | 260 | 50–90 | 60–90 | 0,05–0,10 |
non-ferrous | ||||
N1 | 60–100 | 100–250 | – | 0,05–0,25 |
high-temp alloys | ||||
S1 | 200 | 20–45 | 20–40 | 0,05–0,10 |
S2 | 250 | 20–30 | 20–30 | 0,02–0,05 |
S3 | 280 | 15–20 | 15–20 | 0,02–0,05 |
S4 | 350 | 10–15 | 10–15 | 0,02–0,05 |
hardened steel | ||||
H1 | 55 HRC | 20–45 | 20–45 | 0,01–0,03 |
Methods of External Thread Milling
right-hand thread... conventional milling | left-hand thread... conventional milling |
right-hand thread... climb milling | left-hand thread... climb milling |
Methods of Internal Thread Milling
right-hand thread... conventional milling | left-hand thread... conventional milling |
right-hand thread... climb milling | left-hand thread... climb milling |
Minimum Bore Diameters
cutter | TPI | 48 | 32 | 24 | 20 | 16 | 12 | 10 | 8 | 7 | 6 | 5.5 | 5 | 4.5 | 4.5 | 4 | 4 |
pitch mm | 0,5 | 0,75 | 1,0 | 1,25 | 1,5 | 2,0 | 2,5 | 3,0 | 3,5 | 4,0 | 4,5 | 5,0 | 5,5 | – | 6,0 | – | |
cutter diameter (D1) | minimum bore diameter (D) (inches) | ||||||||||||||||
K035TM1RW050-STN10 | .35 | .374 | .394 | .421 | .449 | ||||||||||||
K045TM1RW050-STN11N | .45 | .472 | .492 | .520 | .547 | .571 | |||||||||||
K049TM1RW037LT11S | .49 | .512 | .531 | .559 | .587 | .610 | |||||||||||
K061TM1RW062-STN16T | .61 | .630 | .650 | .667 | .705 | .728 | .768 | ||||||||||
K067TM2RW075-STN11D | .67 | .693 | .717 | .748 | .772 | .787 | .827 | ||||||||||
K075TM1RW075-STN16T | .75 | .776 | .803 | .827 | .850 | .866 | .906 | ||||||||||
K079TM1RW075-STN16N | .79 | .815 | .843 | .866 | .890 | .906 | .945 | ||||||||||
K087TM1RW100-STN16L | .87 | .893 | .921 | .945 | .969 | .984 | 1.024 | ||||||||||
K102TM2RW100-STN16D | 1.02 | 1.051 | 1.079 | 1.102 | 1.130 | 1.154 | 1.193 | ||||||||||
K118TM1RW100-STN27N | 1.18 | 1.209 | 1.236 | 1.260 | 1.291 | 1.319 | 1.362 | 1.441 | 1.535 | 1.654 | 1.772 | 1.890 | |||||
K146TM1RW125-STN27N | 1.46 | 1.496 | 1.520 | 1.555 | 1.591 | 1.614 | 1.654 | 1.732 | 1.830 | 1.929 | 2.047 | 2.185 | |||||
K165TM2RW125-STN27D | 1.65 | 1.701 | 1.724 | 1.772 | 1.811 | 1.831 | 1.866 | 1.929 | 2.047 | 2.146 | 2.268 | 2.401 | |||||
– | 1.38 (UN) | – | – | – | – | – | – | – | – | – | 1.969 | – | 1.843 | – | 1.756 | – | 2.228 |
– | 1.38 (ISO) | – | – | – | – | – | – | – | – | – | 1.969 | 2.102 | 1.673 | 1.969 | – | 2.264 | – |
– | 1.38 (BSW) | – | – | – | – | – | – | – | – | – | 1.961 | – | 1.831 | – | 1.866 | – | – |
UN-ISO-BSW
workpiece material | Cutting Speed vc SFM | feed rate per revolution (inch) |
KC635M | ||
carbon steels 187 HB | 300–700 | .004–.008 |
carbon steels 187–220 HB | 300–500 | .004–.006 |
alloy steel 200–250 HB | 200–425 | .004–.006 |
alloy steel 250–325 HB | 150–300 | .004–.006 |
stainless steel, austenitic 210 HB | 300–450 | .004–.006 |
stainless steel, martensitic 321 HB | 250–350 | .002–.006 |
stainless steel, ferritic 245 HB | 350–550 | .002–.004 |
cast steel 140 HB | 350–550 | .002–.006 |
cast steel 220302 HB | 225–425 | .002–.004 |
titanium alloys | 200–400 | .001–.003 |
high-temperature (nickel and iron base) | 75–150 | .001–.002 |
high-temperature (cobalt base) | 50–100 | .001–.002 |
cast iron | 250–350 | .002–.006 |
malleable iron | 250–400 | .001–.003 |
workpiece material | Cutting Speed vc m/min | feed rate per revolution (mm) |
KC635M | ||
carbon steels 187 HB | 90–210 | 0,10–0,20 |
carbon steels 187–220 HB | 90–150 | 0,10–0,15 |
alloy steel 200–250 HB | 60–130 | 0,10–0,15 |
alloy steel 250–325 HB | 50–90 | 0,10–0,15 |
stainless steel, austenitic 210 HB | 90–140 | 0,10–0,15 |
stainless steel, martensitic 321 HB | 80–110 | 0,05–0,15 |
stainless steel, ferritic 245 HB | 110–170 | 0,05–0,10 |
cast steel 140 HB | 110–170 | 0,05–0,15 |
cast steel 220302 HB | 70–130 | 0,05–0,10 |
titanium alloys | 60–120 | 0,03–0,08 |
high-temperature (nickel and iron base) | 20–45 | 0,03–0,05 |
high-temperature (cobalt base) | 15–30 | 0,03–0,05 |
cast iron | 80–110 | 0,05–0,15 |
malleable iron | 80–120 | 0,03–0,08 |
cutter | TPI | 48 | 32 | 24 | 20 | 16 | 12 | 10 | 8 | 7 | 6 | 5.5 | 5 | 4.5 | 4.5 | 4 | 4 |
pitch mm | 0,5 | 0,75 | 1,0 | 1,25 | 1,5 | 2,0 | 2,5 | 3,0 | 3,5 | 4,0 | 4,5 | 5,0 | 5,5 | – | 6,0 | – | |
cutter diameter (D1 mm) | minimum bore diameter (D) (mm) | ||||||||||||||||
K035TM1RW050-STN10 | 8,89 | 9,50 | 10,01 | 10,69 | 11,40 | ||||||||||||
K045TM1RW050-STN11N | 11,43 | 11,99 | 12,50 | 13,21 | 13,89 | 14,50 | |||||||||||
K049TM1RW037LT11S | 12,45 | 13,00 | 13,49 | 14,20 | 14,91 | 15,49 | |||||||||||
K061TM1RW062-STN16T | 15,49 | 16,00 | 16,51 | 16,94 | 17,91 | 18,49 | 19,51 | ||||||||||
K067TM2RW075-STN11D | 17,02 | 17,60 | 18,21 | 19,00 | 19,61 | 19,99 | 21,01 | ||||||||||
K075TM1RW075-STN16T | 19,05 | 19,71 | 20,40 | 21,01 | 21,59 | 22,00 | 23,01 | ||||||||||
K079TM1RW075-STN16N | 20,07 | 20,70 | 21,41 | 22,00 | 22,61 | 23,01 | 24,00 | ||||||||||
K087TM1RW100-STN16L | 22,10 | 22,68 | 23,39 | 24,00 | 24,61 | 24,99 | 26,01 | ||||||||||
K102TM2RW100-STN16D | 25,91 | 26,70 | 27,41 | 27,99 | 28,70 | 29,31 | 30,30 | ||||||||||
K118TM1RW100-STN27N | 29,97 | 30,71 | 31,39 | 32,00 | 32,79 | 33,50 | 34,59 | 36,60 | 38,99 | 42,01 | 45,01 | 48,01 | |||||
K146TM1RW125-STN27N | 37,08 | 38,00 | 38,61 | 39,50 | 40,41 | 41,00 | 42,01 | 43,99 | 46,48 | 49,00 | 51,99 | 55,50 | |||||
K165TM2RW125-STN27D | 41,91 | 43,21 | 43,79 | 45,01 | 46,00 | 46,51 | 47,40 | 49,00 | 51,99 | 54,51 | 57,61 | 60,99 | |||||
– | 35,05 (UN) | – | – | – | – | – | – | – | – | – | 50,01 | – | 46,81 | – | 44,60 | – | 56,59 |
– | 35,05 (ISO) | – | – | – | – | – | – | – | – | – | 50,01 | 53,39 | 42,49 | 50,01 | – | 57,51 | – |
– | 35,05 (BSW) | – | – | – | – | – | – | – | – | – | 49,81 | – | 46,51 | – | 47,40 | – | – |
1–2: | rapid approach |
2–3: | tool entry along tangential arc with simultaneous feed along Z-axis |
3–4: | helical movement during one full orbit (360°) |
4–5: | tool exit along tangential arc with continuing feed along the Z-axis |
5–6: | rapid return |
1–2: | radial entry with simultaneous feed along the Z-axis |
2–3: | helical movement during one full orbit (360°) |
3–4: | radial exit |
figure A | figure B |
internal left hand thread threading tool workpiece | external thread workpiece threading tool | workpiece threading tool |
Calculation of Feed Rates at the Cutting Edge
1–2: | radial entry |
2–3: | helical movement during one full orbit (360°) |
3–4: | radial exit |
Radial Approach
internal thread | external thread |
F1 = fz x Z x n | RPM = | 12 x SFM | |
π x d1 | |||
F1=tool feed rate at the cutting edge (in/min) fz=inch per tooth (feed rate) Z=number of effective inserts in cutter n=rotational speed (spindle RPM) | SFM=cutting speed, surface feet per minute d1=cutter diameter, over insert π=3.1416 |
P1 = F1 + | (F1 x d1) | ||
D | external thread | internal thread | |
P1= program feed rate (in/min) D= major diameter (external thread) D= minor diameter (internal thread) d1= cutting diameter, over insert | tool workpiece |
Step-by-Step Thread Milling Example
pitch (TPI) | 24 | 20 | 16 | 12 |
pitch mm | 1,0 | 1,25 | 1,5 | 2,0 |
cutter dia. d1 | minimum bore diameter D | |||
.67 | .748 | .772 | .787 | .827 |
.75 | .827 | .850 | .866 | .906 |
.79 | .866 | .890 | .906 | .945 |
Choosing Insert Size
insert IC | a inch (mm) | pitch (TPI) | internal thread | b inch thread length (in) | number of teeth | grade | external thread | b inch thread length (in) | number of teeth | grade | cutter type | ||
catalog number | KC610M | KC620M | catalog number | KC610M | KC620M | ||||||||
32 | STN16 32UN-I | .59 | 19 | STN16 32UN-E | .59 | 19 | |||||||
28 | STN16 28UN-I | .57 | 16 | STN16 28UN-E | .57 | 16 | |||||||
27 | STN16 27UN-I | .56 | 15 | STN16 27UN-E | .56 | 15 | |||||||
24 | STN16 24UN-I | .55 | 14 | STN16 24UN-E | .58 | 14 | |||||||
3/8 | .63 (16) | 20 | STN16 20UN-I | .55 | 11 | STN16 20UN-E | .55 | 11 | STN16 | ||||
18 | STN16 18UN-I | .56 | 10 | STN16 18UN-E | .56 | 10 | |||||||
16 | STN16 16UN-I | .56 | 9 | STN16 16UN-E | .56 | 9 | |||||||
14 | STN16 14UN-I | .57 | 8 | STN16 14UN-E | .57 | 8 | |||||||
13 | STN16 13UN-I | .54 | 7 | STN16 13UN-E | .54 | 7 | |||||||
12 | STN16 12UN-I | .58 | 7 | STN16 12UN-E | .58 | 7 |
pitch (TPI) | 24 | 20 | 16 | 12 |
pitch mm | 1,0 | 1,25 | 1,5 | 2,0 |
cutter dia. d1 | minimum bore diameter D | |||
17,02 | 19,00 | 19,61 | 19,99 | 21,01 |
19,05 | 21,01 | 21,59 | 22,00 | 23,01 |
20,07 | 22,00 | 22,61 | 23,01 | 24,00 |
insert IC | a (mm) | pitch (TPI) | internal thread | b thread length (mm) | number of teeth | grade | external thread | b thread length (mm) | number of teeth | grade | cutter type | ||
catalog number | KC610M | KC620M | catalog number | KC610M | KC620M | ||||||||
32 | STN16 32UN-I | 14,99 | 19 | STN16 32UN-E | 14,99 | 19 | |||||||
28 | STN16 28UN-I | 14,48 | 16 | STN16 28UN-E | 14,48 | 16 | |||||||
27 | STN16 27UN-I | 14,22 | 15 | STN16 27UN-E | 14,22 | 15 | |||||||
24 | STN16 24UN-I | 13,97 | 14 | STN16 24UN-E | 14,73 | 14 | |||||||
9,53 | 16 | 20 | STN16 20UN-I | 13,97 | 11 | STN16 20UN-E | 13,97 | 11 | STN16 | ||||
18 | STN16 18UN-I | 14,22 | 10 | STN16 18UN-E | 14,22 | 10 | |||||||
16 | STN16 16UN-I | 14,22 | 9 | STN16 16UN-E | 14,22 | 9 | |||||||
14 | STN16 14UN-I | 14,48 | 8 | STN16 14UN-E | 14,48 | 8 | |||||||
13 | STN16 13UN-I | 13,72 | 7 | STN16 13UN-E | 13,72 | 7 | |||||||
12 | STN16 12UN-I | 14,73 | 7 | STN16 12UN-E | 14,73 | 7 |
Step-by-Step Thread Milling Example
Calculate the feed rates: | |||||
First, find the RPM. | |||||
RPM = | 12 x SFM | = | 12 x 500 | = | 2418 RPM |
π x d1 | 3.14 x .79 | ||||
Next, calculate the feed rate at the insert cutting edge (F1): | |||||
(using the chosen feed per tooth of .004.) | |||||
F1 = | IPT x nt x RPM | = | .004 X 1 X 2418 | = | 9.67 in/min |
Finally, calculate the feed rate at the cutter centerline (F2): | |||||
F2 = | F1 x (D - d1) | = | 9.67 x (1.182 - .79) | = | 3.207 in/min |
D | 1.182 | ||||
Select the thread milling method. | |||||
Climb milling (preferred) see page . | |||||
Calculate the radius of the tangential arc Re: | |||||
Re = | (Ri - CL)2 + R02 | = | (.591 - .02)2 + .6252 | ||
2Ro | 2 x .625 | ||||
Re = | .573333 in. | ||||
Calculate the angle (β): | |||||
β = | 90° + arc sin | Ro - Re | |||
Re | |||||
β = | 90° + arc sin | .625 - .573333 | |||
.57333 | |||||
β = | 90° + 5.17° | = | 95.17° | = | 95° 10' |
Calculate the movement along the Z-axis during the entry approach from point “A” to point “B” (Zα). (NOTE: P = pitch) | |||||
Zα = P (in) x | α° | = | .0625 | = | .0156 in, because α = 90° |
360° | 4 | ||||
Calculate the “X” and “Y” values at the start of the entry approach. | |||||
X = 0Y = -Ri + CL = -.591 + .02 = - .571 in. | |||||
Define Z-axis location at the start of the entry approach. (NOTE: L = length of thread) | |||||
Z = - (L + Zα) = - (.50 + .0156) = - .5156 in. | |||||
Define the starting point. | |||||
Xa = 0 | |||||
Ya = 0 |
CNC Program (Fanuc 11M) | |||
% | |||
N10G90G00G57X0.000Y0.000 | |||
N20G43H10Z0.M3S2417 | |||
N30G91G00X0.Y0.Z–0.5156 | |||
N40G41D60X0.000Y–0.5710Z0. | |||
N50G03X0.6250Y0.5710Z0.0156R0.5733F3.206 | |||
N60G03X0.Y0.Z0.0625I–0.625J0. | |||
N70G03X–0.625Y0.5710Z0.0156R0.5733 | |||
N80G00G40X0.Y–0.5710Z0. | |||
N90G49G57G00Z8.0M5 | |||
N100M30 | |||
% | |||
Ri = | D | Ro = | Do |
2 | 2 | ||
D = minor diameter | Do = nominal diameter | ||
α 90° | |||
Calculate the feed rates: | |||||
First, find the RPM. | |||||
RPM = | 1000 x Vc | = | 1000 x 150 | = | 2387 RPM |
π x d1 | π x 20 | ||||
Next, calculate the feed rate at the insert cutting edge (F1): | |||||
(using the chosen feed per tooth of 0,1mm.) | |||||
F1 = | Fz x Z x N | = | 0,1 X 1 X 2387 | = | 238,7 mm/min |
Finally, calculate the feed rate at the cutter centerline (F2): | |||||
F2 = | F1 x (D - d1) | = | 238,7 x (3020) | = | 79,57 mm/min |
D | 30 | ||||
Select the thread milling method. | |||||
Climb milling (preferred) see page . | |||||
Calculate the radius of the tangential arc Re: | |||||
Re = | (Ri - CL)2 + RO2 | = | (150,5)2 + 15,8752 | ||
2 x RO | 2 x 15,875 | ||||
Re = | 14,55mm | ||||
Calculate the angle (β): | |||||
β = | 90° + arc sin | Ro - Re | |||
Re | |||||
β = | 90° + arc sin | 15,875 - 14,55 | |||
14,55 | |||||
β = | 90° + 5.17° | = | 95,2° | = | 95° 12' |
Calculate the movement along the Z-axis during the entry approach from point “A” to point “B” (Zα). (NOTE: P = pitch) | |||||
Zα = P (mm) x | α° | = | 1,578 | = | 0,394mm because α = 90° |
360° | 4 | ||||
Calculate the “X” and “Y” values at the start of the entry approach. | |||||
X = 0Y = Ri + CL = 15 + 0,5 = 15,5mm | |||||
Define Z-axis location at the start of the entry approach. (NOTE: L = length of thread) | |||||
Z = (L + Zα) = 12,7 + 0,3945 = 13,0945mm | |||||
Define the starting point. | |||||
Xa = 0 | |||||
Ya = 0 |
Step-by-Step Thread Milling Example
Appendix A | |
Derivation of Formulas for Internal Thread Milling | |
Re, β, and X can be found by a geometric analysis of the entry path. | |
This entry path is defined by the tool traveling along a circular path, with a radius of Re about the point C. | |
Re = | (Ri - CL)2 + Ro2 |
2Ro | |
Triangle OAC enables us to simply solve for Re.Note that OAC is a right angle triangle, and that: | |
OA = Ri – CL CA = Re OC = Ro – Re | |
Pythagoras’ law states: OA2 + OC2 = AC2 | |
Replacing actual values, we get: | |
(Ri - CL)2 + (Ro - Re)2 = Re2 | |
Simplifying, we get: | |
Re = | (Ri - CL)2 + Ro2 |
2R0 | |
Find the angle β. | ||||
sin | ||||
= arc sin | ( | Ro - Re | ) | |
Re | ||||
Therefore, β = 90° + arc sin | ( | Ro - Re | ) | |
Re | ||||
Appendix B | |
Derivation of Formulas for External Thread Milling | |
Re, β, and X can be found by a geometric analysis of the entry path. | |
This entry path is defined by the tool traveling along a circular path, with a radius of Re about the point C. | |
Re = | (Ro - CL)2 + Ri2 |
2Ri | |
Triangle OAC enables us to simply solve for Re.Note that OAC is a right angle triangle, and that: | |
OA = Ro – CL CA = Re OC = Re – Ri | |
Pythagoras’ law states: OA2 + OC2 = AC2 | |
Replacing actual values, we get: | |
(Ro - CL)2 + (Re - Ri)2 = Re2 | |
Simplifying, we get: | |
Re = | (Ro - CL)2 + Ri2 |
2Ri | |
Find the angle β. | |||
β can be easily found using the same triangle: | |||
sin β = | AO | = | (Ro + CL) |
AC | Re | ||
β = arc sin | ( | Ro + CL | ) |
Re | |||
problem | possible cause | solution | |
excessive insert flank wear | • Cutting speed too high. | • Reduce cutting speed. | |
• Chip is too thin. | • Increase feed rate. | ||
• Insufficient coolant. | • Increase coolant quantity/pressure. | ||
chipping of cutting edge | • Chip is too thick. | • Reduce feed rate. • Use the tangential arc method of entrance. • Increase RPM. | |
• Vibration. | • Check rigidity. | ||
material build-up on the cutting edge | • Cutting speed too slow. | • Increase cutting speed. | |
• Chip thickness too small. | • Increase feed rate. | ||
chatter/vibration | • Feed rate is too high. | • Reduce the feed. | |
• Profile is too deep (coarse pitch threads). | • Execute two passes, each with increased cutting depth. • Execute two passes, each cutting only half the thread length. | ||
• Thread length is too long. | • Execute two passes, each cutting only half of the thread length. | ||
insufficient thread accuracy | • Tool deflection. | • Reduce feed rate. • Execute a zero cut. |
thread designation | standard designation | tolerance class |
UN | ANSI B 1.174 | 2A/2B |
UNJ | MIL-S-8879A | 3A/3B |
ISO | R262 (DIN 13) | 6g/6H |
NPT | USAS B2.1 : 1968 | standard NPT |
NPTF | ANSI B 1.20.3-1976 | standard |
BSW | B.S. 84 : 1956, DIN 259, ISO 228/1 : 1982 | medium class A |
BSPT | B.S. 21 : 1985 | standard BSPT |
ACME | ANSI B1/5 : 1988 | 3G |
PG | DIN 40430 | standard |
TR | DIN 103 | 7e/7H |
TMS Series
Materials | Brinell | surface speeds | indexable inserts | |
steel | HB | KC610M | KC635M | feed fz (mm/tooth) |
P1 | 125 | 100–210 | 90–180 | 0,05–0,20 |
P2 | 180 | 100–170 | 90–160 | 0,05–0,20 |
P3 | 225 | 60–130 | 70–115 | 0,05–0,20 |
P4 | 250 | 80–150 | 80–160 | 0,05–0,20 |
P5 | 275 | 75–130 | 80–160 | 0,05–0,15 |
P6 | 325 | 70–110 | 60–100 | 0,05–0,10 |
stainless steel | ||||
M1 | 180 | 100–170 | 120–180 | 0,05–0,10 |
M2 | 250 | 70–140 | 100–140 | 0,05–0,10 |
M3 | 330 | 70–120 | 100–120 | 0,05–0,10 |
cast iron | ||||
K1 | 180 | 60–130 | 100–120 | 0,02–0,08 |
K2 | 220 | 60–125 | 80–100 | 0,05–0,15 |
K3 | 260 | 50–90 | 60–90 | 0,05–0,10 |
non-ferrous | ||||
N1 | 60–100 | 100–250 | – | 0,05–0,25 |
high-temp alloys | ||||
S1 | 200 | 20–45 | 20–40 | 0,05–0,10 |
S2 | 250 | 20–30 | 20–30 | 0,02–0,05 |
S3 | 280 | 15–20 | 15–20 | 0,02–0,05 |
S4 | 350 | 10–15 | 10–15 | 0,02–0,05 |
hardened steel | ||||
H1 | 55 HRC | 20–45 | 20–45 | 0,01–0,03 |