US 2025/0010423 A1 · HONING TOOL AND METHOD FOR PRODUCING A HONING TOOL

Abstract

The invention relates to a honing tool (100) for machining the inner surface of a bore in a workpiece by means of at least one honing operation, comprising: a tool body (110) that defines a tool axis (112) and has a guide bore (115), which is coaxial to the tool axis, for receiving two adjusting elements which can be moved axially independently of each other, and a plurality of guide openings (160) which are distributed over the circumference of the tool body (110) and lead radially relative to the tool axis (112) from the guide bore (115) to an outer face of the tool body; a plurality of cutting means supports which each have a support section (152) that is wide in the circumferential direction and comprises an outer face for receiving cutting means, and have an adjusting section (158) that is narrower than the support section and has an inclined surface on the inner face facing away from the outer face for interacting with an associated inclined surface of one of the two adjusting elements. The adjusting sections of cutting means supports are each radially movably received in one of the guide openings. All the cutting means supports which can be adjusted via the first adjusting element form a first cutting group, and all the cutting means supports which can be adjusted via the second adjusting element form a second cutting group, wherein the tool body (110) has fourteen or more guide openings (160) which have an irregular angular division such that one or more of the guide openings has a different angular spacing (WA) from the directly adjacent guide openings in the circumferential direction.

Claims21

Dependent claims

A honing tool for machining an inner surface of a bore in a workpiece by means of at least one honing operation, in particular for honing cylinder run faces during production of cylinder blocks or cylinder liners for reciprocating piston engines, comprising:

a tool body which defines a tool axis and has a guide bore coaxial to the tool axis for receiving two axially movable feed elements, and a plurality of guide openings which are distributed over the circumference of the tool body and lead radially relative to the tool axis from the guide bore to an outside of the tool body;
a first feed element and a second feed element which are received in the guide bore and are axially movable independently of one another;
a plurality of cutting means carriers which each have a carrier portion which is wide in the circumferential direction and has an outside for receiving cutting means, and have a feed portion which is narrower than the carrier portion and has a sloping face on the inside facing away from the outside for cooperating with an assigned sloping face of one of the two feed elements, wherein the feed portions of cutting means carriers are each radially movably received in one of the guide openings;
wherein all cutting means carriers which can be advanced via the first feed element form a first cutter group, and all cutting means carriers which can be advanced via the second feed element form a second cutter group;
wherein:
the tool body has fourteen or more guide openings which have an irregular angular division such that one or more of the guide openings has a different angular spacing from the directly adjacent guide openings in the circumferential direction.

3 more elements

A method for producing a honing tool for machining an inner face of a bore in a workpiece by means of at least one honing operation, in particular for honing cylinder run faces in production of cylinder blocks or cylinder liners for reciprocating piston engines, with the following steps:

provision of a tool body which defines a tool axis and comprises a guide bore coaxial to the tool axis for receiving two mutually independently axially movable feed elements, and a number of fourteen or more guide openings which lead radially relative to the tool axis from the guide bore to an outside of the tool body and are distributed over the circumference with an irregular angular division, such that one or more guide openings have different angular spacings from the directly adjacent guide openings in the circumferential direction;
equipping the tool body with cutting means carriers each having a carrier portion which is wide in the circumferential direction and has an outside for receiving cutting means, and have a feed portion which is narrower than the carrier portion and has a sloping face on the inside facing away from the outside for cooperating with a sloping face of a feed element, wherein the feed portions of cutting means carriers are each inserted into one of the guide openings in the radial direction;
equipping the tool body with a first feed element and a second feed element by insertion into the feed bore;
wherein the cutting means carriers and the feed elements are adapted to one another configuration-dependently, such that the first feed element acts only on cutting means carriers of a first cutter group and the second feed element acts only on cutting means carriers of a second cutter group.

1 more element

Dependencies are inferred from the claim text.

Honing tool and method for producing a honing tool

Life of this patent

Honing tool and method for producing a honing tool

Life of this patent

Abstract

Claims21