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.
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.
Boring of rotational symmetrical components is normally carried out in a turning lathe.
Choice of method
Three different areas may be considered to determine the best method and tooling solution.
1. Hole dimensions and quality
2. Component material, shape and quantity
3. Machine parameters