Method for forming shaped passages
First Claim
1. A method to form a plurality of passages in an article, each of the plurality of passages having a first portion and a second portion in flow communication, the first portion formed by a first passage forming means having a first coordinate system, the second portion formed by a second passage forming means having a second coordinate system, each of the plurality of passages having a predetermined spatial position defining a position P1p within the first coordinate system, a position P2p within the second coordinate system, and wherein the plurality of passages define a spatial envelope, the method including the steps of:
- forming an indexing hole in a plate, the indexing hole being formed by the first passage forming means and at a position P1i within the first coordinate system, the position P1i being within the spatial envelope of the plurality of passages;
placing the plate within the second passage forming means and aligning the second passage forming means with the indexing hole;
determining the spatial error Ep between the actual position P2i of the indexing hole relative to a position P2i,t, wherein P2i,t corresponds to a translation of the coordinate P1i from the first coordinate system into the second coordinate system;
forming the first portions at the positions P1p using the first passage forming means; and
forming the second portions at positions P2c using the second passage forming means, wherein the positions P2c correspond to positions P2p +Ep.
1 Assignment
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Accused Products
Abstract
A two step operation passage forming process includes steps to minize tolerance build up between the operations. The method includes a step of determining a spatial error between the coordinate systems of the two operations. In a particular embodiment, the step of determining the spatial error includes forming an indexing hole in a template at a particular location using the first operation, aligning the apparatus of the second operation with the indexing hole, and measuring the spatial error between the actual position of the indexing hole and a translated position. The determined spatial error may then be used as an offset in the second operation to account for tolerance differences between the two operations.
101 Citations
14 Claims
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1. A method to form a plurality of passages in an article, each of the plurality of passages having a first portion and a second portion in flow communication, the first portion formed by a first passage forming means having a first coordinate system, the second portion formed by a second passage forming means having a second coordinate system, each of the plurality of passages having a predetermined spatial position defining a position P1p within the first coordinate system, a position P2p within the second coordinate system, and wherein the plurality of passages define a spatial envelope, the method including the steps of:
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forming an indexing hole in a plate, the indexing hole being formed by the first passage forming means and at a position P1i within the first coordinate system, the position P1i being within the spatial envelope of the plurality of passages; placing the plate within the second passage forming means and aligning the second passage forming means with the indexing hole; determining the spatial error Ep between the actual position P2i of the indexing hole relative to a position P2i,t, wherein P2i,t corresponds to a translation of the coordinate P1i from the first coordinate system into the second coordinate system; forming the first portions at the positions P1p using the first passage forming means; and forming the second portions at positions P2c using the second passage forming means, wherein the positions P2c correspond to positions P2p +Ep. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification