Plunge grinding

 

Plunge grinding

Plunge grinding is a discontinuous grinding process, machining is also performed tooth by tooth. Both tooth flanks are machined simultaneously. There is a surface contact between tooth flank and grinding wheel. Due to the plunge movement of the grinding wheel in axis direction, the grit path runs in parallel to the tooth base and the surface structure runs in tooth width direction. Grinding grooves running in parallel to the tooth base emerge. The grinding direction is from ring gear toe at the inner diameter to ring gear heel at the outer diameter, or vice versa. Only ring gears can be produced by means of plunge grinding. Pinions cannot be ground with this process due to their geometry.



· Additional oscillating movement besides main rotation of the grinding wheel · Grinding spindle is positioned in eccentric bushing, separately driven · Eccentric value between 0.1 mm and 0.3 mm · Eccentric speed approx. 200 – 500/min slower than rotational speed of the grinding wheel (value approx. 2,000/min) · Improved surface in pinion grinding Grinding wheel Cutting travel Infeed travel Eccentric travel Eccentric spindle axis Grinding spindle axis Working wheel · When grinding ring gears, the oscillati

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