TOOL REGRINDING & RECONDITIONING
OVER 70 YEARS OF TOOL GRINDING EXPERIENCE
It’s obvious regrinding, reconditioning and re-coating cutting tools result in a reduction of overall tooling costs. Conical and Global Cutting Tools has a history of regrinding tools to near original specifications, restoring the end mill to as good as new, regardless of its original manufacturer. Our experienced staff is here to help find the right solution for your tooling needs.
Prices vary and are based on coating and diameter size. It does not matter how badly the tool may be damaged, we can regrind nearly any end mill, regardless of condition. By the off chance we cannot recondition an end mill to customer required specification, we will recycle the tooling, unless otherwise noted.
We will resharpen or recondition any tool, regardless of original manufacturer. Sharpening is normally limited to outside diameter primary land and end work only, while reconditioning may apply where excessive chipping or breakage exists and larger stock amounts must be removed. Most any tool can be resharpened, however, when normal re-sharpening is not sufficient, reconditioning may be needed.
The operational life of a tool depends on how excessively a dull tool has been used. Continued use of a dull end mill after it’s reasonable life expectancy will require additional stock removal to make it usable again or cause the tool to break while in use. In general, resharpening is required when wear is visible on the top cutting edge, excess heat is generated or vibrations create an audible increase in noise.
For cost-effective regrinding, we suggest 1/4” in diameter end mills and above to justify setup costs. For optimal performance, regrinding or reconditioning is imperative before excessive deterioration of the tool is evident.
At the end of the production run, cutting tools should be removed from the machine and examined. Deteriorated or chipped end mills may need to be re-fluted to restore proper flute structure and radial rake. Cavities and chips on the cutting edge will result in built-up edge and will usually cause breakage of carbide end mills. After numerous regrinds, the tool will lose its effectiveness. Rake angle and flute depth are diminished and the end mill is no longer able to be reconditioned.
Regrinding reduces the diameter of the end mill and causes the radial rake angle and hook to recede. In general, reducing the diameter by the below equations can still maintain effectiveness by up to 80% of the original tool.