BIG GOURMAND SNGX 13 LNET 16 HELICAL MILLING CUTTERS FOR ROUGHING.

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Elijah Bradley
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1 BIG GOURMAN HELICAL MILLING CUTTERS FOR ROUGHING SNGX 13 LNET 16

New helical milling cutters for roughing New concept of milling cutters Indexable inserts with 8 cutting edges Ideal clamping Internal cooling for better chip evacuation Long tool life

reduction of spindle Internal supply for coolant liquids - optimal cooling of each inserts ivided design of tool - exchangeable head Optimal shape and size of inserts pocket - axial and

edge - optimal geometry for operational reliability - high strength of cutting edges with negative chamfer - positive rake angle - high tool life - flank stabilization chamfer for

geometry with positive chamfer and rake angle - lower cutting forces - reliability of cutting edge - high tool life lnet 16-r Geometry of indexable inserts for firts line of cutters

2 New helical milling cutters for roughing New concept of milling cutters Indexable inserts with 8 cutting edges Ideal clamping Internal cooling for better chip evacuation Long tool life Reliability of tool Toughness of cutter body and exchangeable heat New generation of cutters New production technology - highest of hardness body cutter Left handed helix - stress reduction of spindle Internal supply for coolant liquids - optimal cooling of each inserts ivided design of tool - exchangeable head Optimal shape and size of inserts pocket - axial and radial positioning inserts New generation of indexable inserts SNGX 13-R SNGX 13-M Unique geometry of indexable inserts - double side square inserts - 8 cutting edge Optimized cutting edge - optimal geometry for operational reliability - high strength of cutting edges with negative chamfer - positive rake angle - high tool life - flank stabilization chamfer for reduction of vibrations Unique geometry of indexable inserts - double side square inserts - 8 cutting edge - geometry for lower power machine Optimized cutting edge - more positive geometry with positive chamfer and rake angle - lower cutting forces - reliability of cutting edge - high tool life lnet 16-r Geometry of indexable inserts for firts line of cutters exchangeable head - one side inserts Optimized cutting edge - high strength of cutting edges with negative chamfer - positive rake angle - high tool life and operational reliability - wiper edge for better surface roughness

3 HELICAL MILLING CUTTERS FOR ROUGHING γ p -1 k r 9 γ f -9 max l 1 Z* - Number of teeth ZN* - Number of inserts TS* - Taper ISO Assortment imension L l l 1 Z* ZN* TS* Taper Cooling [kg] 63J2R155H5-SLSN14-C ISO/IS ,2 8J2R19H5-SLSN134-C ISO/IS ,6 63J2R155G5-SLSN14-C ISO 297 4,2 8J2R19G5-SLSN134-C ISO 297 6,6 63J2R175X5-SLSN14-C MAS BT 5,4 8J2R21X5-SLSN134-C MAS BT 7,8 SPARE PARTS iameter of cutter Indexable front part Connecting screw Key Clamping screw Screwdriver 63 EH6326-SL-C HS123 HXK 1 US4512-T2P SR T2P-T 8 EH836-SL-C HS164 HXK 14 US4512-T2P SR T2P-T

INEXABLE CUTTING INSERTS SNGX 13 lnet 16 Grades imensions ISO ANSI 823 824 (l) d s d 1 r e SNGX 13512PN-R 13,2 13,2 6,36 5,9 1,2 SNGX 13512SN-M 13,2 13,2 6,36 5,9 1,2 LNET 16616SR-R 16,4 13,2 6,38

16616SR-R 823 LNET 16616SR-R 824 feed [mm.tooth -1 ],15,4 -,15,4 - - - cutting speed [m.min -1 ] 9 135-85 125 - - - feed [mm.tooth -1 ],15,4 -,15,4 - - - cutting speed [m.min -1 ] 9 12-85 11 - - - feed [mm.

4 INEXABLE CUTTING INSERTS SNGX 13 lnet 16 Grades imensions ISO ANSI (l) d s d 1 r e SNGX 13512PN-R 13,2 13,2 6,36 5,9 1,2 SNGX 13512SN-M 13,2 13,2 6,36 5,9 1,2 LNET 16616SR-R 16,4 13,2 6,38 5,9 1,6 Initial cutting conditions Basic shape of inserts Cutting conditions Initial cutting conditions P M K N S H SNGX 13512PN-R 823 SNGX 13512PN-R 824 SNGX 13512SN-M 823 SNGX 13512SN-M 824 LNET 16616SR-R 823 LNET 16616SR-R 824 feed [mm.tooth -1 ],15,4 -,15, cutting speed [m.min -1 ] feed [mm.tooth -1 ],15,4 -,15, cutting speed [m.min -1 ] feed [mm.tooth -1 ],15,35 -,15, cutting speed [m.min -1 ] feed [mm.tooth -1 ],15,35 -,15, cutting speed [m.min -1 ] feed [mm.tooth -1 ],15,4 -,15, cutting speed [m.min -1 ] feed [mm.tooth -1 ],15,4 -,15, cutting speed [m.min -1 ]

Milling P M K N S H Aplied to inserts: sngx 13512 SN-M Finishing Finishing Profil of cutting edge Medium epth of cut - geometry with positive rake angle, face and flank chamfer - suitable for

5 OVERVIEW OF GEOMETRIES Geometry Photo Milling Workpiece material group iagram of application escr. P M K N S H Aplied to inserts: sngx PN-R sngx 13-R Geometry Photo Workpiece material group iagram of application escr. Milling P M K N S H Aplied to inserts: sngx SN-M Finishing Finishing Profil of cutting edge Medium epth of cut - geometry with positive rake angle, face and flank chamfer - suitable for machining of materials group P and K - suitable for roughing operation and unstable conditions Range of cutting conditions: Roughing f z,15,4 [mm.tooth -1 ] Feed f z [mm.tooth -1 ] 1,2 12, sngx 13-M Profil of cutting edge Medium epth of cut - geometry with positive rake angle - suitable for machining of materials group P and K - geometry suitable for lower power machine Range of cutting conditions: Roughing f z,15,35 [mm.tooth -1 ] Feed f z [mm.tooth -1 ] 1,2 12, Geometry Photo Workpiece material group iagram of application escr. Milling P M K N S H Aplied to inserts: LNET SR-R LNET 16-R Finishing Profil of cutting edge Medium epth of cut - geometry with positive rake angle - wiper edge - suitable for machining of materials group P and K Range of cutting conditions: Roughing f z,15,4 ] [mm.tooth -1 ] Feed f z [mm.tooth -1 ] 1,6 15, - main application - other applications

6 Recommended application for helical milling cutters Shoulder and Slott milling > 1/ mm Axial depth of cut iameter of cutter Axial depth of cut mm,1,2,3,4,5 Feed f z [mm.tooth -1 ] Cutting conditions for steel C45 (2 HB) Inserts: LNET 16616SR-R SNGX PN-R; 823 Cutting speed: v c = 9 m.min -1 Axial depth of cut Radial depth of cut > 1/3 f z min = minimal feed per tooth [mm.tooth -1 ] f z max = maximal feed per tooth [mm.tooth -1 ] = radial depth of cut = axial depth of cut = diameter of cutter a e = 21 = 25 = 31,5 63 f z min f z max f z min f z max f z min f z max 63,16,42,15,41,15,4 a e = 27 = 35 = 4 8 f z min f z max f z min f z max f z min f z max 8,16,42,15,4,15,4 Shoulder milling < 1/ mm Axial depth of cut mm Radial depth of cut < 1/3 Axial depth of cut Radial depth of cut Cutting conditions for steel C45 (2 HB) Inserts: LNET 16616SR-R SNGX PN-R; 823 Cutting speed: v c = 1 m.min -1 f z min = minimal feed per tooth [mm.tooth -1 ] f z max = maximal feed per tooth [mm.tooth -1 ] = radial depth of cut = axial depth of cut = diameter of cutter a e = 2 = 5 = 1 = 15 = 21 f z min f z max f z min f z max f z min f z max f z min f z max f z min f z max 63,47 1,26,3,79,21,56,18,47,16,42 a e = 2 = 5 = 1 = 15 = 21 = 27 f z min f z max f z min f z max f z min f z max f z min f z max f z min f z max f z min f z max 8,53 1,41,34,89,24,63,19,52,17,45,16,42 For steel from 2HB to 3HB is required to decrease feed and cutting speed by 15% For steel from 3HB to 45HB is required to decrease feed and cutting speed by 3%. For cast irons is possible to increase feed and cutting speed by 2%.

7 Examples of customer applications Example 1: Name of workpiece: crankshaft Material: steel 34CrNi Machine: TOS Kurim FU15 (35 kw) Operation: helical interpolation Tool: 63J2R155H5-SLSN14-C face mills 125 mm; 8 teeth Inserts: SNGX 13512PN-R; 823 LNET 16616SR-R; 823 RHKW 2; P4 Cutting conditions Competitor Pramet Cutting speed v c 2; 353* 115 m.min -1 Feed per tooth f z,18;,15*,6 mm.tooth -1 Axial depth of cut 3;,8* 1 mm Radial depth of cut 14,6; 1,36* 13,5 mm Time of machining t 3; 75* min Total time T min Material removal rate Q 31; 1,2* 945 cm 3.min -1 *) finishing Total time [min] Saving time 9 min Competitor Pramet Example 2: Name of workpiece: arm of machine Material: steel L2HGSNM (35 HB) Machine: milling machine R Operation: helical interpolation Tool: 63J2R155H5-SLSN14-C Helical mills 63 mm; 2 teeth Inserts: SNGX 13512PN-R; 823 LNET 16616SR-R; 823 SCET 12; P35 4 Cutting conditions Competitor Pramet Cutting speed v c m.min -1 Feed per tooth f z,14,22 mm.tooth -1 Axial depth of cut 6 37 mm Radial depth of cut 2 63 mm Material removal rate Q cm 3.min -1 Material removal rate [cm 3.min -1 ] Competitor Pramet

8 CZECH REPUBLIC Pramet Tools, s.r.o., Unicovska 2, Sumperk, Phone: , Fax: , youtube.com/pramettv

NPA. Expansion of the HM390 Triangular Inserts Line with Tools Carrying 5 mm Edged Inserts. New Product Announcement. Page 1 / 9

NPA. Expansion of the HM390 Triangular Inserts Line with Tools Carrying 5 mm Edged Inserts. New Product Announcement. Page 1 / 9 NPA Expansion of the HM390 Triangular Inserts Line with Tools Carrying 5 mm Edged Inserts Page 1 / 9 Page 2 / 9 Highlights Tools carrying triangular inserts with 5 mm helical cutting edges Effective and