The test result indicates that mending the structure of deep-hole drill,optimizing cutting technology and parameter can produce superfine deep holes of titanium alloy with the length to diameter ratio165.
Aiming at the characteristics of this kind of barrel, this article makes an investigation on the inner hole machining method, and designs the machining technology of deep-hole drilling, boring and honing. Moreover it ameliorates the structures of the existing deep-hole drill and honing tools and optimizes the cutting parameters.
It is determined that deep-hole tool material YT726,whose attrition characteristics surpasses others,is suitable to cut titanium alloy material through deep-hole drilling tests and when drilling titanium alloy deep-holes,whose diameter is 47.4mm,the optimum geometrical parameters is γ_o=7°,α_o=12°,ψ_r=15°,e=3.8mm.
Aiming at the characteristics of this kind of barrel, this article makes an investigation on the inner hole machining method, and designs the machining technology of deep-hole drilling, boring and honing. Moreover it ameliorates the structures of the existing deep-hole drill and honing tools and optimizes the cutting parameters.
Based on the mechanics analysis to the small-diameter deep-hole drilling system and the characteristics of the drill and the drill-pole, a strain sensor is designed to monitoring the drilling process for small diameter deep-hole.
A study is made on the automatic control of deep hole drilling machine. Several design plans are proposed and practised, analysed and compared with each other.
Included are results on high-throughput deep hole drilling in glasses in ambient air, and precision high-speed micron-scale surface modification of composite materials and chalcogenide glasses.
One serious problem in deep-hole drilling is the formation of a dynamic disturbance called spiralling which causes a multi-lobe shaped distortion of the bore hole cross section.