WORK HOLDER FOR ELECTROCHEMICAL ABRADING MACHINE

摘要

A work holder, particularly for an electro-chemical grinding machine, including an electrically conductive plate secured to an indexable rotatable table and having a plurality of work-holding fixtures thereon. A post extends upwardly from the conductive plate for permitting electrical potential to be applied to the device at a location spaced above the work fixtures. The post includes an electrically conductive lower brush portion secured to the conductive plate and an electrically conductive upper brush portion in rotatable sliding contact with the lower brush portion. The upper brush portion is stationarily secured and fixedly connected to a current-conducting cable. A protective sleeve extends between and surrounds the upper and lower brush portions for preventing electrolyte from contacting the sliding contact surfaces therebetween.