We mount the casting on parallels onto our horizontal boring machine, clock where we can the original faces and centralise between the original mounting holes to ensure that we correctly define a datum for machining.
Our machine is fitted with a 'facing head' so that we are able to feed out the boring bar whilst the chuck rotates which allows us to both bore and face without stopping for tool adjustments.
The part is shimmed slightly so that we machine the minimum amount possible from the face to achive a good flat surface. |