Hyd-Mech M-16 - Step 5 Determine Feed Rate Setting

Pg 2.19
Feed Rate Calculation
Feed Rate Knob
STEP 5STEP 5
STEP 5STEP 5
STEP 5
DETERMINE FEED RATE SETTING,
FR (in/min) (mm/min) FR (in/min) (mm/min)
FR (in/min) (mm/min) FR (in/min) (mm/min)
FR (in/min) (mm/min)
FEED RATE is the vertical speed at which the blade descends through the work-piece.
The FEED RATE Knob controls FEED RATE of the blade descent in the range 0 to 15 in/min
(380mm/min). The FEED RATE should be adjusted only in one direction (from O to required value). If
you go too far, go back to O and come back up. To set FEED RATE for particular cutting situations use
the Graph below, which represents the relationship between FEED RATE, blade speed and blade pitch.
For Example #1, it is known from Step 3 that optimum
blade pitch is 2/3, and from Step 4 that blade speed,
is 200 ft/min (60mm/min). From the Graph on the left,
the FEED RATE is determined in the following way:
- On the horizontal axis (blade speed axis), find 200 ft/
min(60mm/min). - Find the point where a vertical line
from 200 ft/min (60mm/min) would intersect the 2/3
blade pitch curve.
- From this intersection point run horizontally left to
the vertical (FEED RATE) axis, to arrive at 1.8 in/min
(45mm/min) FEED RATE. Thus 1.8 in/min (45mm/min)
is the FEED RATE for cutting 8" (200mm) diameter
1045 Carbon Steel when the optimum 2/3 pitch blade
is used.
NONO
NONO
NO
..
..
.
MAMA
MAMA
MA
TERIALTERIAL
TERIALTERIAL
TERIAL
SS
SS
S
OPTIMUM BL OPTIMUM BL
OPTIMUM BL OPTIMUM BL
OPTIMUM BL
ADE SPEEDADE SPEED
ADE SPEEDADE SPEED
ADE SPEED
ft/minft/min
ft/minft/min
ft/min
m/min m/min
m/min m/min
m/min
11
11
1
5" (125mm)5" (125mm)
5" (125mm)5" (125mm)
5" (125mm)
Dia Solid Carbon SteelDia Solid Carbon Steel
Dia Solid Carbon SteelDia Solid Carbon Steel
Dia Solid Carbon Steel
225225
225225
225
7070
7070
70
22
22
2
12" (300mm) I-Beam12" (300mm) I-Beam
12" (300mm) I-Beam12" (300mm) I-Beam
12" (300mm) I-Beam
290290
290290
290
9090
9090
90
33
33
3
4" x 4" (100 x 100mm) R4" x 4" (100 x 100mm) R
4" x 4" (100 x 100mm) R4" x 4" (100 x 100mm) R
4" x 4" (100 x 100mm) R
ec Tec T
ec Tec T
ec T
ubeube
ubeube
ube
, 1/4" (6mm) W, 1/4" (6mm) W
, 1/4" (6mm) W, 1/4" (6mm) W
, 1/4" (6mm) W
allall
allall
all
350350
350350
350
110110
110110
110
44
44
4
4"(100) 400 Stainless Steel4"(100) 400 Stainless Steel
4"(100) 400 Stainless Steel4"(100) 400 Stainless Steel
4"(100) 400 Stainless Steel
140140
140140
140
4545
4545
45
55
55
5
2" x 2" (50 x 50mm) R2" x 2" (50 x 50mm) R
2" x 2" (50 x 50mm) R2" x 2" (50 x 50mm) R
2" x 2" (50 x 50mm) R
ec Tec T
ec Tec T
ec T
ube 1/4" (6mm) Wube 1/4" (6mm) W
ube 1/4" (6mm) Wube 1/4" (6mm) W
ube 1/4" (6mm) W
allall
allall
all
Bundle 5 x 5pcs 10" x 10" (500 x 500mm)Bundle 5 x 5pcs 10" x 10" (500 x 500mm)
Bundle 5 x 5pcs 10" x 10" (500 x 500mm)Bundle 5 x 5pcs 10" x 10" (500 x 500mm)
Bundle 5 x 5pcs 10" x 10" (500 x 500mm)
325325
325325
325
100100
100100
100
66
66
6
3" x 3" (75 x 75mm) Inconel3" x 3" (75 x 75mm) Inconel
3" x 3" (75 x 75mm) Inconel3" x 3" (75 x 75mm) Inconel
3" x 3" (75 x 75mm) Inconel
6060
6060
60
2020
2020
20
Materials and Blade Speed
The following table gives examples of the optimum blade speeds for different materials.