Sumitomo - Полный каталог инструмента - 2016 EN
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Replaceable Head Type MULTI-DRILLs Large Hole MTL Type
SMD Type
New For Large Holes
Tool edge design ideal for malleable material used for large
casings, etc.
Edge design suitable for malleable material commonly used
for large hole drilling.
Reduces movement whenstartingthe hole
X-Type Thinning
Aims to reduce thrust under heavy cutting
Large Thinning Angle
Improved chip management Designed to handle low
for highly malleable materials machine and clamp rigidity
Large Helix Angle Design Edge Treatment Exclusively
for Large Diameters
Prevents unexpected breakage
when working with expensive materials
Robust Substrate
Machined Surface Accuracy Cutting Force Comparison (Thrust)
Work Material: St 52-3 (Base substrate for construction use) Work Material: St 42-2 (Laminated plates)
Drill Sizec: 33,0mm x 5D Drill Size: c 37,5mm x 5D
Cutting Conditions: vc=120m/min, f=0,25mm/rev Cutting Conditions: vc=90m/min, f=0,35mm/rev
Cutting Environment: Emulsion Type Cutting Environment: Emulsion Type
High drilling accuracy with large diameters Stable even when machining laminated plates
Good Chip Control Cutting Force (N m)
10,000
33,15
33,10 Measured (1) 8,000
33,05 Point (1) (2)
MDeiraescutrioends Exit 33,00 Measured
Entrance 35,95 Point (2) Exit
6,000
4,000
Multi-Drills 2,000
32,90 0 5 10 15 20 25
Depth of cut (mm)
32,85 Intermediate
Entrance
Recommended Cutting Conditions vC=Cutting Speed (m/min) f=Feed Rate (mm/rev)
Work Material Soft Steel General Steel Hardened Steel Stainless Steel Grey Ductil
(~HB250) (HB250~320) (HRC45) (~HB200)
Cast Iron Cast Iron
Recommended Head MTL Type MTL Type MTL Type MTL Type MTL Type MTL Type
Drill (mm) Cutt. 60 ~ 120 60 ~ 120 40 ~ 80 40 ~ 80
(40 ~ 80) (40 ~ 80) (30 ~ 60) (30 ~ 60)
Conditions 0,25 ~ 0,4 0,2 ~ 0,35 0,15 ~ 0,3 0,15 ~ 0,25
~ 36,5 vc 50 ~ 100 50 ~ 90
f (40 ~ 90) (40 ~ 70)
~ 42,5 vc 60 ~ 120 60 ~ 120 40 ~ 80 40 ~ 80 0,25 ~ 0,45 0,25 ~ 0,35
f (40 ~ 80) (40 ~ 80) (30 ~ 60) (30 ~ 60)
50 ~ 100 50 ~ 90
0,25 ~ 0,4 0,2 ~ 0,35 0,15 ~ 0,3 0,15 ~ 0,25 (40 ~ 90) (40 ~ 70)
0,25~ 0,45 0,25 ~ 0,35
Note: Where machining and work clamp rigidity are good, conditions may be increased up to the maximum.
For 8D drills, please use feed rates stated within the ( ). Before drilling 8D holes, a guide hole of similar diameter must be made.
K48 = Japan stock www.sumitomo-tools.ru
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