Twist drill grinding defect indicator - displays tip angle and tip deviation from drill centre using test head and setting wheel

The device checks and demonstrates grinding defects in twist drill cutting. A drill is laid with its cutting edge vertical in grooves (16, 17) and positioned by lifting mechanisms (21, 22) with the cutting edge middle at the level of the measuring rulers. The setting wheel (18) moves the test head (...

Full description

Saved in:
Bibliographic Details
Main Author WESTPHAL,RAINER
Format Patent
LanguageEnglish
German
Published 10.01.1980
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
Online AccessGet full text

Cover

More Information
Summary:The device checks and demonstrates grinding defects in twist drill cutting. A drill is laid with its cutting edge vertical in grooves (16, 17) and positioned by lifting mechanisms (21, 22) with the cutting edge middle at the level of the measuring rulers. The setting wheel (18) moves the test head (6) across the drill until the tip lies in the centre of the measuring rulers. The deviation is indicated on the scale (7). The measuring rulers are swung by setting wheels (11, 12) to lie against the drill tip sides and the tip angle is read.
Bibliography:Application Number: DE19782828688