Dressing and truing of hybrid bonded CBN grinding tools using a short-pulsed fibre laser

Cutting characteristics of electroplated diamond tools with laser-generated positive clearance

“…Subsequent investigations on super-abrasive wheels mainly deal with the use of lasers to sharpen the wheel by selective ablation of the bond material [4,5]. The availability of high-powered, short and ultrashort pulsed laser sources with near diffraction limited beam quality opens up a number of new approaches to laser-based tool conditioning, for example processing individual superabrasive grains and grain structures for touch dressing of electroplated diamond dressing rolls presented in [6] and profiling of high-strength bonded cubic boron nitride (CBN) grinding tools shown in [7]. It was demonstrated that the short energy-material interaction time with these lasers allows processing heat-sensitive diamond or CBN materials without significant crystallographic transformation of the abrasive grains.…”

“…The setup for the tool tests (Fig. 2) is based on the work of Walter et al [7], implemented on a modified Micron HSM 400U, fiveaxis machining centre equipped with a high-speed grinding spindle (Fisher MFM-10120/11). A customised nozzle applies Blasogrind HC5 oil as cooling lubricant and ensures repeatable processing conditions.…”

Abrasive machining of advanced aerospace alloys and composites

“…Dressing and cleaning of grinding wheels can also be achieved through the application of localised energy sources such as laser [37,97,229] and electrical-discharge [46,119,233] based processes (see example schematics in Fig. 18), leading to improvements in terms of grinding performance.…”

The grinding performance of a laser-dressed bronze-bonded diamond grinding wheel

“…However, after more than 20 years of development, laser dressing remains in the experimental stage, and the number of researchers and published results in this field are limited. Based on statistics compiled by our group (from searching the Web of Science database), only 15 research organizations in six countries (India [1][2][3][4], Germany [5][6][7], China [8][9][10], USA [11][12][13], Switzerland [14][15][16], and Iran [17]) have been developed, and approximately 30 SCI publications on laser dressing have been published (including auxiliary laser dressing).…”