Tool with a base body and method for forming bores in a work piece using such a tool
AssigneeMapel Fabrik fur Prazisionswerkzeuge Dr. Kress KG
InventorArtur Kurz
Life of this patent
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Abstract
A tool having a base body which carries cutters for machining bores in a workpiece, the cutters being arranged coaxially with one another. The base body further has at least one lifting element, with which the base body can be moved from an eccentric position in relation to an axis of the workpiece bores into a central position, in which the axis of the tool coincides with the axis of the workpiece bores.
Claims49
A tool for machining bores which are centered on a bore axis extending along a workpiece, a tool having:
- a base body having a tool axis and insertable in the workpiece in an eccentric insertion position such that the tool axis is radially offset from the bore axis during subsequent axial displacement of the base body toward a predetermined axial position;
- a plurality of axially spaced apart cutters projecting from the base body for machining the bores in the workpiece;
- the base body having at least one integrated lifting element displaceable axially with the base body to the predetermined axial position in which the at least one integrated lifting element acts upon the base body so that the base body can be moved from the eccentric insertion position into a central machining position, in which the tool axis coincides with the bore axis of the bores, whereby relative rotation of the tool and the workpiece in the central machining position causes the cutters to machine the bores.
A tool for machining bores which are centered on a bore axis extending along a workpiece, the tool having:
- a base body having a tool axis and insertable in the workpiece in an eccentric insertion position such that the tool axis is radially offset from the bore axis during subsequent axial displacement of the base body toward a predetermined axial position;
- cutters mounted on the base body for machining the bores in the workpiece;
- a lifting element mounted in the base body and adjustable radially so as to enable the base body to move from the eccentric insertion position into a central machining position, in which the tool axis of the base body coincides with the bore axis.
A tool for machining bores which are centered on a bore axis extending along a workpiece, the tool comprising:
- a base body having a tool axis and insertable in the workpiece in an eccentric position in which the tool axis is radially offset from the bore axis;
- a compressed air supply line extending the base body for delivering compressed air;
- cutters mounted on the base body for machining the bores;
- a lifting element with which the base body can be moved from the eccentric position into a central machining position, in which the tool axis coincides with the bore axis,
- the lifting element having an outer side, which is spaced radially outwardly from the tool axis, and at least one compressed-air bore which extends through the lifting element toward and opens into the outer side of the lifting element, the at least one compressed air bore and the compressed air supply line being in flow communication with one another for blowing the compressed air upon the outer face of the lifting element to keep it clean.
A tool for machining bores which are centered on a bore axis extending along a workpiece, comprising:
- a base body having a tool axis and a periphery which is spaced radially outwardly from the tool axis;
- cutters mounted on the periphery of the base body for machining the bores,
- a lifting element with which the base body can be moved from an eccentric insertion position in relation to the bore axis into a central machining position, in which the tool axis of the base body coincides with the bore axis of the bores;
- and
- at least one supporting element which projects beyond the periphery of the base body.
An elongated tool for machining a bore which is centered on a bore axis in a workpiece, the tool having:
- a base body having a tool axis;
- cutters mounted on the periphery of the base body for machining the bores,
- a lifting element with which the base body can be moved in the workpiece from an eccentric insertion position in relation to the bore axis into a central machining position, in which the tool axis of the base body coincides with the bore axis of the bores, and
- at least one measuring device mounted to the base body and operative to measure the machined bores.
A tool having a base body which carriers cutters for machining bores in a workpiece, said cutters being arranged coaxially with one another, wherein the base body has at least one integrated lifting element, with which the base body can be moved from an eccentric insertion position in relation to an axis of the workpiece bores into a central position, in which the axis of the workpiece bores coincides with an axis of the base body.
A method for machining a bore centered on a bore axis in a workpiece, comprising the steps of:
- inserting an elongated base body in the workpiece such that the base body assumes an eccentric insertion position in which a longitudinal axis of the base body is spaced radially from the bore axis;
- displacing the base body axially along the workpiece to a predetermined position, in which a cutter mounted on the base body is located in front of the bore to be machined;
- adjusting a lifting element, which is mounted to the base body, in a direction transverse to the tool axis, thereby displacing the base body to a central machining position in which the axis of the base body coincides with the bore axis;
- and
- applying a torque to the base body as the base body is displaced axially, thereby machining the bore with the cutter after displacing the base body into the central machining position.
A method for machining a bore centered on a bore axis in a workpiece, comprising the steps of:
- inserting an elongated base body such that the base body assumes an eccentric position in which a longitudinal axis of the base body is spaced radially from a bore axis;
- displacing the base body axially along the workpiece to a predetermined axial position, in which a cutter mounted on the base body is located in front of the bore to be machined;
- displacing the base body in a direction transverse to the tool axis, thereby moving the base body to a central machining position in which the axis of the base body coincides with the bore axis;
- applying a torque to the base body while displacing the base body axially, thereby machining the bore;
- maintaining the base body in the bore and measuring a bore diameter immediately after terminating the rotational and axial displacement of the base body at the end of machining the bore.
A method for machining a workpiece bore centered on a bore axis by using a base body which has a body axis, a cutter projecting from the base body and a lifting element, the method comprising the steps of:
- inserting the base body in a workpiece such that the base body assumes an eccentric position in which the body axis is radially offset from the bore axis and the cutter is spaced radially inwardly from bore surface;
- displacing the base body axially within the workpiece to a predetermined axial position;
- stopping the displacement of the base body in the predetermined axial position in which the cutter is located in front of the workpiece bore;
- acting upon the base body with the lifting element such that the base body is displaced from the eccentric position to a central machining position, in which the body axis coincides with the bore axis and the cutter is displaced radially toward the bore surface;
- and
- rotating the base body while advancing the base body axially such that the base body is maintained in the central machining position, thereby causing the cutter to machine the workpiece bore.
Dependencies are inferred from the claim text.