FIELD: machine engineering.
SUBSTANCE: one end of the blank is fixed in the chuck of the machine, and the second one is fixed in the rest device, preliminary hole is drilled and then bored with a mandrel. A stem holder with an open clamping device is installed to the place of the tool holder on the support. One of the stem rest devices is placed on the machine bed in the middle between the support and the blank, and the second one is mirrored behind the support. The stem is used of coaxial structure. In the rear part of the stem there is an inlet to the outer tube and an outlet from the inner tube connected to the corresponding branch pipes of the coolant system. The stem with branch pipes is moved to the drilled hole. Drilling is performed after coolant system is tured on by means of machine chuck rotation and feeding the support.
EFFECT: drilling of deep hole of any shape on the lathe machine is provided without the use of special equipment in a single production.
4 dwg
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