Methods of designing molds for machining cost reduction
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United States of America Patent
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Aug 23, 2016
Grant Date -
Nov 20, 2014
app pub date -
Nov 20, 2012
filing date -
Nov 21, 2011
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Abstract
An orthopaedic knee cutting block prepared by a process comprising the steps of: creating a mold with a first core detail and a second core detail, each of the core details corresponding to a volume; filling the mold with a mixture of a binder and a metal; releasing a green part from the mold, the green part having a first void corresponding to the first core detail and a second void corresponding to the second core detail; removing the binder from the green part; heating the green part to create a sintered part; and machining the part by sawing a cutting slot such that the cutting slot overlaps with the first void and the second void. Alternatively, the orthopaedic knee cutting instrument may be made by a simple metal casting method.
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