Study on Precision Grinding of Micro Aspherical Surface. Feasibility Study of Micro Aspherical Surface by Inclined Rotational Grinding.

Planar nanogrinding of a fine grained WC-Co composite for an optical surface finish

“…Schematic diagram of wheel/workpiece and infeed grinding model tool spindle rotation of 26 913 rpm and a workpiece rotation of 1000 rpm. The mean thickness of an undeformed chip cut by a diamond grit is then given by [45] h m = r 2 fl g /2LbRn t (4) h m is proportional to the tool feed rate and the radius of the workpiece and is in inversely proportional to the wheel speed n t , if R, b, and l g are constant. In the current study, the maximum undeformed chip thickness cut by one grit h max can be estimated when grinding at the maximum diameter of 9.8 mm and at a maximum feed rate of 0.1 mm/min.…”

“…WC-Co composites have been used as optical inserts or dies in ceramic powder injection moulding and glass injection moulding for optics [1][2][3][4][5]. This is because of their superior properties of high hardness, strength, fracture toughness, and wear resistance.…”

“…However, this technology requires the extra set-ups for the ELID function. Some research has been conducted on the multiple grinding steps required to generate optical quality components from tungsten carbide [2][3][4][5]. Recently, ultraprecision grinding has been developed in optical/precision engineering, that produces little subsurface damage and can precisely control the geometry of the final surface [1,[22][23][24][25][26][27][28].…”

Micro/meso ultra precision grinding of fibre optic connectors

“…2a. A cup wheel grinding method [10,11] was used to generate the spherical profile of end faces. In this method, the cup wheel was tilted and the top part of the tilted wheel contacted the workpiece during grinding, as shown in Fig.…”

Loose abrasive truing and dressing of resin bond diamond cup wheels for grinding fibre optic connectors

“…Ultra-precision grinding has been extensively used as a final finishing process for optic components because this technology is able of achieving a high dimensional accuracy and mirror surface finish [1][2][3][4][5]. Recently, an effort is being directed towards using ultra-precision grinding to replace polishing of spherical end faces of fibre optic connectors [6].…”