Profile Milling Requirements for the Hard Metals 1965-1970

摘要

To meet increasingly stringent conditions of speed, temperature, strength and reduced weight designed into new supersonic aerospace vehicles, hard metals will be used more and more. As time goes on, they also will be specified for more conventional applications because of their reliability, long life and low maintenance cost. The switch to hard metals makes necessary the development and use of big, rugged, rigid, high-powered, machine tools capable of cutting these materials to very fine tolerances at slow speeds. A detailed investigation of the machining requirements and of the available production equipment to meet those requirements in the years 1965 through 1969 shows a serious deficiency in the kinds of machines capable of cutting these hard metals efficiently to the specified tolerances at the lowest possible cost. National security cannot always be bought by putting chief emphasis on economy. Sometimes, when a pioneering production operation is necessary, cost saving has to be secondary if the job is to be done efficiently and expeditiously. The long-range view should prevail. Such an investment will ultimately be returned many times over in terms of cost as well as more effective weapon systems.