DESIGN AND DEVELOPMENT OF A SPECIAL SLEEVE FOR HOLDING MICRO BORING HEAD IN FACE PLATE OF BORING HEAD OF HORI ZONTAL BORING MACHINE FOR USING THIS HEAD AS ALTERNATIVE TO MACHINE SPINDLE FOR BORING SMALL HOLES

摘要

Design and development of special sleeve for holding micro boring head on face plate housing of horizontal boring machine substituting the machine spindle which normally does such job but developed axial and longitudinal play due to long use, leading to error beyond limits of tolerance. One sleeve (01) having the same outside dia and depth as the parallel inside hole and depth of boring head (02) on face plate is used as holding arrangement for the micro boring head (03). The micro boring head having an outside taper of given dimension perfectly fits into inside taper of the said sleeve (01). The micro boring head (03) holds the micro boring bar (04) and cutting tool (05) for boring precision micro holes within desired level of accuracy.