Deburring blade for deburring bore margins with an even or uneven shape, having a base body (1) which is rotatably driven about its longitudinal axis, in which base body at least one bar blade (3) is held exchangeably in a spring-loaded, swivelably mounted blade holder (2) in the base body (1) in a radial bar blade bore (7) of the blade holder (2), and the blade holder (2) is designed as an approximately cylindrical body, which is mounted rotatably in a bearing bore (6) of the base body (1).

Pressure-medium-controlled countersinking tool with one or more machining blades which are arranged in a rotatably driven base body and which can be actuated in their pivot position by supplying a pressure medium, wherein the actuation of the at least one blade takes place via at least one piston-cylinder unit actuated by the pressure medium, wherein the at least one blade is pivotably mounted on a bearing bolt forming a pivot axis and can be extended from a blade chamber arranged in the blade housing, wherein a centering device is arranged between the blade and the blade window of the base body in the radial distance from the pivot axis and in the pivot range of the at least one blade.

Embodiments of the present disclosure are directed to a roller-skate bearing seat truing tool comprising a plurality of spaced teeth, a first handle, and a second handle. The plurality of spaced teeth may be operable to true up a cylindrical surface of a roller-skate bearing seat and a vertical surface of the roller-skate bearing seat. The first handle may comprise a protrusion longitudinally extending from one end. The second handle may comprise a receptacle at one end configured to slidably receive the protrusion. The plurality of spaced teeth may be disposed about an upper rim of the receptacle, on an upper rim of the first handle, about the protrusion, or both.

A method includes inserting a machining tool through a hole of at least one workpiece that includes a first surface and a second surface opposite the first surface and extends from the first surface to the second surface. The hole forms an inner wall. The machining tool includes a shaft and a cutting tip proximate to one end of the shaft. The cutting tip includes a cutting portion. The method includes positioning the cutting portion of the cutting tip to abut an edge of the hole. The edge is located at a junction of the second surface of the one of the at least one workpiece and the inner wall. The method includes forming a surface modification at the edge with the cutting tip. The method includes removing the machining tool from the hole. The method includes installing a fastener within the hole. The fastener engages the surface modification.

A method includes inserting a machining tool through a hole of at least one workpiece that includes a first surface and a second surface opposite the first surface and extends from the first surface to the second surface. The hole forms an inner wall. The machining tool includes a shaft and a cutting tip proximate to one end of the shaft. The cutting tip includes a cutting portion. The method includes positioning the cutting portion of the cutting tip to abut an edge of the hole. The edge is located at a junction of the second surface of the one of the at least one workpiece and the inner wall. The method includes forming a surface modification at the edge with the cutting tip. The method includes removing the machining tool from the hole. The method includes installing a fastener within the hole. The fastener engages the surface modification.

Provided is a tool bracket in which a spindle body is inserted and the spindle body can be smoothly tilted. The tool bracket includes a housing including a cylinder chamber extending along a cylinder axis; a tilting body having a tilt axis configured to tilt about a tilt center, the tilting body to which a spindle body is attachable, the tilting body tiltable with respect to the cylinder axis; a rotation stopper member extending in a radial direction from the tilt axis, the rotation stopper member disposed in the tilting body; and a receiving groove extending along the cylinder axis, the receiving groove arranged in the housing.

Provided is a tool bracket capable of tilting a spindle body even when a moment load acting on the spindle body is relatively small. A tool bracket includes: a housing including a cylinder chamber extending along a cylinder axis; a piston urged by compressible fluid toward distal end to reciprocate in the cylinder chamber and having an action portion disposed at distal end; and a tilting body having a tilt axis and disposed in the cylinder chamber in a tiltable manner with respect to the cylinder axis, and includes a centering portion disposed at basal end to abut the action portion, the centering portion presses the piston with the cylinder axis as an action line when the tilt axis is tilted from the cylinder axis.