Boring machine may refer to: The boring machine is one of the most versatile machine tools used to bore holes in large and heavy parts.which are practically impossible to hold and rotate in an engine lathe or a drilling machine. The boring machines may be classified under the four headings : 1. Horizontal boring machine. (a) Table type. (b) Floor type. (c) Planer type. (d) Multiple head type. 2. Vertical boring machine. (a) Vertical turret lathe. (b) Standard vertical boring machine. 3. Precision boring machine. 4. Jig boring machine. (a) Vertical milling machine type. (b) Planer type.