EP 0048031 B1 19850821 - METHOD AND DEVICE FOR SHARPENING THE POINT OF A TWIST DRILL
Title (en)
METHOD AND DEVICE FOR SHARPENING THE POINT OF A TWIST DRILL
Publication
Application
Priority
DE 3035099 A 19800917
Abstract (en)
[origin: EP0048031A2] 1. A method of producing a cylinder jacket point ground surface of twist drills, wherein the main cutting edge (6) of the drill (1) is engaged by means of a drill holder (20; 46) at a predetermined point angle (vdelta) with respect to the cutting outer peripheral surface of a grinding wheel (2') being formed with a correspondingly profiled periphery and the cylinder jacket (Z) defining the main rake surface (7a, 7b) of the drill and the rake angle (alpha) thereof is generated by a translatory relative movement (T) caused between the grinding wheel (2') and the drill axis (1a), which movement is substantially parallel to the main cutting edge (6) of the drill, characterized in that the translatory relative movement (T) is affected in a direction forming an adjustably angle of attack (phi) with the radial plane (R) of the grinding wheel (2').
IPC 1-7
IPC 8 full level
B24B 3/26 (2006.01)
CPC (source: EP)
B24B 3/26 (2013.01)
Designated contracting state (EPC)
AT CH FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0048031 A2 19820324; EP 0048031 A3 19820714; EP 0048031 B1 19850821; AT E15002 T1 19850915; DE 3035099 A1 19820325; DE 3035099 C2 19851128
DOCDB simple family (application)
EP 81107335 A 19810916; AT 81107335 T 19810916; DE 3035099 A 19800917