Method for machining opening in workpieces
AssigneeVisteon Global Technologies, Inc.
InventorsAngel Alvarez-Mendez, Volker Steude
Life of this patent
Estimating the term…
Abstract
A procedure to machine openings in work pieces which provides two cutting blades (11, 12), defining a cutting blade axis, adjacent to a work piece in which an opening is to be machined, the opening defining a distance between two oppositely positioned opening edges and defining an opening axis. The opening axis and the cutting blade axis are inclined at an acute angle (α) to one another in a way that the distance between the cutting blades parallel to the opening axis (9) is equal to the required distance between the opening edges. With the increasing wear of the cutting blades, the inclination angle is reduced so that the cutting blade distance parallel to the opening axis continues to correspond to the required distance of the opening edges.
Claims22
Procedure for machining openings in work pieces with the following steps:
- providing a cutting tool with an insert which rotates around an axis of rotation, the insert having two cutting edges positioned alongside of the axis of rotation with a distance to one another (11, 12) which determine a cutting blade axis running through both,
- supporting a work piece near the cutting tool in a way that an imagined opening axis (9), which runs through two oppositely positioned opening edges (6, 7) to be machined in a predetermined alignment to the cutting blade axis, and
- machining of the opening edges of the work piece by cutting one opening edge with one cutting edge and the other opening edge with the other cutting edge with both opening edges showing a required distance (8) to one another alongside the opening axis in a finished state,
- positioning of the two cutting edges (11, 12) along the cutting blade axis (13) at a distance to one another (14), which is greater that the distance (8) between the opening edges (6, 7),
- inclination of the opening axis (9) and the cutting blade axis (13) in an initial position at an acute angle (a) to one another so that the distance between the cutting edges (11, 12) parallel to the opening axis (9) is equal to the required distance (8) of the opening edges (6, 7), and
- reduction of the inclination angle (a) with a wear of the cutting edges (11, 12) so that the cutting distance between the cutting edges (11, 12) parallel to the opening axis (9) continues to correspond to the required distance (8) of the opening edges (6, 7).
A method of machining openings in a work piece comprising the steps of:
- providing a cutting tool having an insert with two cutting edges, the edges located a first distance apart and defining a cutting axis extending through the edges;
- providing a work piece adjacent to the cutting tool, the work piece including a face in which an opening is to be machined, the opening having generally opposed opening edges located a second distance apart and defining an opening axis extending through the opening edges;
- positioning the cutting tool and the work piece such that the cutting axis and opening axis form an acute angle therebetween and the second distance being equal to the distance between the cutting edges along the opening axis;
- rotating the cutting tool about an axis of rotation;
- and as said cutting tool is rotated about the axis of rotation, advancing the cutting tool into the work piece along an axis substantially normal to the opening axis thereby machining the opening in the work piece.
Dependencies are inferred from the claim text.