Deburring tool

A deburring tool for deburring abutting edges at orthogonally and obliquely extending transversal boreholes having a diameter of less than 10 mm in a component, such as an engine block, an injection system for combustion engines, a valve block as well as a camshaft or transmission shaft, which is moved in a rotational and/or translatory manner when being used, consisting of a tool shaft (1), which has a clamping end (2) comprising a material connection (4) and a shaft end at the tool side comprising a support body (6), which is arranged as a fixed journal, a tubular shaft part (5), which is connected to the tool shaft (1) by means of one or several connecting elements and which holds one or several cutting bodies (11) with a cutting blade (3) which are in each case mounted in a movable manner in a passage (10), said cutting bodies bearing loosely and with a play (8) on the surface of the support body (6), the shape and measurements of which are always geometrically different from the surface of the cutting body (11) and a substance, which is pressed under pressure into the through-borehole (7) of the tool shaft (1), displaces the cutting blade(s) (3) to the exterior, said cutting blade(s) (3) encompassing shoulders, which are arranged laterally with a shoulder angle of from 5 to 45 degrees, surfaces (F1;

• F2;
• F3) arranged in parallel to the x and y axis comprising a clearance angle of zero degrees and an actively cutting partial area in the form of a chamfer (F2), wherein the shaft end at the tool side is continued as a tubular shaft part (5), holds the cutting body (11), which is mounted in a movable manner in the passage (10) and the support body is a cutting blade journal (6) comprising a closing element (12), which is capable of being introduced into the tubular shaft part (5), said closing element (12) being pinned to the shaft part (5) by means of a connecting element (9) to secure the position and the contour of the cutting blade (3) at the end of the cutting body (11) on the tool side is a chamfer formed by an introduction angle ç and is a chamfer comprising an effective cutting blade edge (15) at the end of the cutting body (11) at the tool side, said effective cutting blade edge (15) having a chip space (18) and a step chip breaker (20), which is defined by a chip guiding angle ε and an undercut angle {acute over (æ)} determines the form of the cutting blade edge (19), whereby the cutting blade (3) operates backwards.