BORING MILL Russian patent published in 2014 - IPC B23B39/02 B23Q1/01 

FIELD: machine building.

SUBSTANCE: machine comprises a long-length box-type supporting frame with horizontal guides, at one of the frame ends a vertical post is installed and fitted with vertical guides for vertical travelling of a spindle head with an electric motor and a boring head, the frame is equipped with a lower slide able of moving along the frame guides and an upper slide able of moving in the plane perpendicular to the frame guides, a turning table with a mounting plate for a workpiece positioning, is mounted on the upper slide. The frame is fitted with grooves where thin plates of high alloy steel and nonferrous metal alloys are glued. The guides of the frame and the vertical post are provided with aerostatic supports formed by the guide itself and a plate set above it with a gap and presented in the form of built-up guides having at least three rectangular sections divided by drainage channels on the condition of preventing the leakage of air from one section into another, with the width of at least 30 mm and the length of every rectangular section being maximum 500 mm. Each section is fitted with a hole for supply of air under pressure and by distributing microgrooves on the condition that capillary channels are formed together with the frame surface to prevent rapid increase of air consumption.

EFFECT: higher accuracy and reliability of the machine performance.

2 cl, 10 dwg, 1 tbl