Brake disc tool for machining a brake disc blank, brake disc production plant and method for producing a brake disc
AssigneeEcoroll AG Werkzeugtechnik
InventorsKarsten Röttger, Zied Heni
Life of this patent
Estimating the term…
Abstract
A brake disc tool for machining a brake disc blank is provided. The brake disc tool includes a first cutting tool which is arranged to cut a first brake surface of the brake disc blank, a second cutting tool which is arranged to cut a second brake surface of the brake disc blank, a first forming tool for forming the first brake surface, a second forming tool for forming the second brake surface, and at least one infeed device for the infeed of the cutting tools and the forming tools towards one another, such that a brake disc blank arranged between the cutting tools and the forming tools is able to be machined and rolled in each case simultaneously on both of its brake surfaces.
Claims8
A method for producing a brake disc by rotating a brake disc blank about a rotational axis by means of a brake disc rotation device of a machine tool, wherein the rotational axis is the same axis about which a brake disc rotates during operation, comprising:
- (i) engaging a first cutting tool of a brake disc tool at a first cutting point of engagement which is at a first cutting distance from the rotational axis, so that the first cutting tool cuts a first brake surface of the brake disc blank;
- (ii) engaging a second cutting tool of the brake disc tool at a second cutting point of engagement which is at a second cutting distance from the rotational axis, so that the second cutting tool cuts a second brake surface of the brake disc blank;
- (iii) engaging a first forming tool of the brake disc tool at a first forming point of engagement which is at a first forming distance from the rotational axis, so that the first brake surface is formed;
- (iv) engaging a second forming tool of the brake disc tool at a second forming point of engagement which is at a second forming distance from the rotational axis, so that the second brake surface is formed,
- wherein the first cutting point of engagement and the first forming point of engagement form an angle with the rotational axis, this angle having an angle bisector;
- and
- (v) moving the first and second cutting tools and the first and second forming tools such that, at least when all tools are engaged,
- a first difference in distance between
- a projection of the first cutting point of engagement onto the bisector and
- a projection of the first forming point of engagement onto the bisector or
- a second difference in distance between
- a projection of the second cutting point of engagement onto the bisector and
- a projection of the second forming point of engagement onto the bisector
- remains constant and/or does not exceed a radial distance between the first and second brake surfaces and a hub section of the brake disc blank which protrudes axially above a brake surface plane on which the first brake surface lies.
A method for producing a brake disc by rotating a brake disc blank about a rotational axis by means of a brake disc rotation device of a machine tool, wherein the rotational axis is the same axis about which a brake disc rotates during operation, comprising:
- engaging a first cutting tool of a brake disc tool at a first cutting point of engagement which is at a first cutting distance from the rotational axis, so that the first cutting tool cuts a first brake surface of the brake disc blank;
- engaging a second cutting tool of the brake disc tool at a second cutting point of engagement which is at a second cutting distance from the rotational axis, so that the second cutting tool cuts a second brake surface of the brake disc blank;
- engaging a first forming tool of the brake disc tool at a first forming point of engagement which is at a first forming distance from the rotational axis, so that the first brake surface is formed;
- engaging a second forming tool of the brake disc tool at a second forming point of engagement which is at a second forming distance from the rotational axis, so that the second brake surface is formed,
- moving the first forming tool and the first cutting tool radially inwards, followed by
- stopping of the radially inwards movement of the first cutting tool and
- continuing the radially inwards movement of the first forming tool.
Dependencies are inferred from the claim text.