The Ingersoll Milling Machine Company

Jan Van Roojen

Thomas J Lindem

Henry W Lewis

Disclosed is a machine system adaptable to a wide range of milling conditions and functions by the provision of a master milling head capable of providing spindle-driving power and up to 5-axis movement to a wide range of individual spindle heads each designed for a specific machining function, and each selectively, interchangeably, and automatically matable to the master head.

Interchangeable spindle-head milling system

A mounting for supporting a cutter tooth in a boring bar for fine adjustment outwardly to compensate for tooth wear, the mounting including a cartridge insertable into a hole through the boring bar to support the tip of the cutter tooth in a cutting position with respect to the bar. The cartridge comprises a slidable holder connected by means of a differential screw to a nut so that, as the screw is turned, the length of the cartridge is increased to provide fine adjustment in the position of the cutter tooth. Coarse adjustment in the position of the cutter tooth is provided as an incident to assembling the parts of the cartridge by threading the screw into the nut until the lower end of the screw is flush with the lower end of the nut and by then mounting the holder on the upper end of the screw. Once assembled as a unit, the cartridge is inserted into the hole until an annular shoulder on the nut seats against a complimentary shoulder within the hole thereby accurately locating the cutter tooth so only fine adjustment is needed thereafter. In order for the mounting to be used in smaller diameter boring bars, one form of the invention utilizes a differential screw having interfitting male and female portions and, in the other form of the invention, a driver recess in the lower end portion of the screw permits the latter to be positioned essentially flush with the underside of the boring bar.

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Rockford, IL, United States of America

Jan Van Roojen