Boring methods

Boring is defined as a method to enlarge or improve the quality of an existing hole. Sandvik Coromant offers several flexible tool systems available in a wide diameter range for roughing, fine boring and reaming operations.

Roughing – Roughing is primarily focused on metal removal in order to enlarge existing holes made by methods such as pre-machining, casting, forging, flame cutting etc.
Fine boring – Intended to complete an existing hole to achieve a close hole tolerance, position and high quality surface finish.
Reaming – The multi-edge reamer is a highly productive tool for high quality surface finish and close dimensional tolerance.

Milling

A helical or circular interpolation method performed with a milling cutter can be used instead of boring tools. The method is less productive when it comes to roughing but can be an alternative when:

• machine power is limited and/or no coolant is available
• chip breaking/evacuation is difficult to obtain with a boring tool
• an absolutely flat bottom hole is required
• there is limited space in the tool magazine
• the series length is short.
• Tools to produce various hole diameters.

Internal turning

Boring of rotational symmetrical components is normally carried out in a turning lathe.​