- Traditional -
Rotary surface grinding is known as Blanchard Grinding. Blanchard grinding quickly removes stock from one side of a part. Blanchard grinding is mainly used for magnetic parts.
- Tolerances of 0.001 on thickness and 0.005 on parallelism and flatness of 0.0005
- Micro finishes of 8ra are possible
- Blanchard grinding leaves a crosshatch pattern
- High production rates
- Uniform size and finish
Double Disc Grinding
Double disc grinding uses two opposing abrasive wheels to simultaneously grind two sides of a part so that equal amounts of material are removed from both sides. Double disc is used for parts that must have parallel and flat surface areas finished to critical tolerances.
- Materials include:aluminum, brass, cast iron, plastic, powdered metal and steel
- Highly efficient grinding method that reduces pre-machining costs up to 50%
- Dimensional tolerances to ±0.0002", parallelism to 0.0002" and flatness to 0.0002"
- Surface finishes of up to 16 Ra on aluminum and up to 8 Ra on ferrous alloys
External grinding is also known as between centers, cylindrical grinding or O.D. Grinding. It is used when multiple diameters need to be ground concentric to each other or to the centerline of the part.
- Tight tolerances
- Low microfinishes
Centerless grinding include the ability to grind parts with geometries that do not allow them to be OD ground and to maintain size beyond what is capable of an OD grinder.
- Parts from 0.010 to 4.00 can be run
- Tolerances of + or - 0.0001
- Micro finishes of 4 micro inches
- Magnetic and non-magnetic material may be ground
- High-volume production runs