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The ejector drilling process was developed as deep hole drilling technology which can be used on conventional machine tools. The use of single-lip deep hole drilling is particularly common on machining centres in series production. On the right you can see schematic drawings of conventional deep hole drilling machines. [1]
In computer numerical control (CNC) machine tools a process called peck drilling, or interrupted cut drilling, is used to keep swarf from detrimentally building up when drilling deep holes (approximately when the depth of the hole is three times greater than the drill diameter). Peck drilling involves plunging the drill part way through the ...
The boring bar is the protruding arm of the machine that holds the cutting tool(s), and must be very rigid. [2] Because of the factors just mentioned, deep-hole drilling and deep-hole boring are inherently challenging areas of practice that demand special tooling and techniques. Nevertheless, technologies have been developed that produce deep ...
A gun drilling machine drilling holes in steel. There are three basic types of deep hole drilling. [2] Processes are categorized by how the cutting coolant flushes heat and chips from the cutting face. The three types of deep drilling are: Gun drilling - The cutting tool is a fluted solid rod that has a hole bored down the center.
Fast hole drilling EDM was designed for producing fast, accurate, small, deep holes. It is conceptually akin to sinker EDM but the electrode is a rotating tube conveying a pressurized jet of dielectric fluid. It can make a hole an inch deep in about a minute and is a good way to machine holes in materials too hard for twist-drill machining.
The deep hole drilling (DHD) measurement technique is a residual stress measurement technique used to measure locked-in and applied stresses in engineering materials and components. [1] DHD is a semi-destructive mechanical strain relaxation (MSR) technique, which seeks to measure the distribution of stresses along the axis of a drilled ...
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