The device includes a tubular case having a through hole that extends therethrough in an axial direction, a test indicator capable of determining a minute amount of change of distance by a stylus, a tubular holder body rotatably attached to the case through the through hole, a supporting body for supporting the holder body, a slidable body provided on a radial inner side of the holder body and movable relative to the holder body along the axial direction, and a pivotal body having a pivotable leading end portion whose pivotal amount is transmitted to the slidable body. The slidable body has an axial extension portion formed along the axial direction and a radial extension portion formed along the radial direction. The stylus and the radial extension portion are configured to come into contact with each other.

The present disclosure relates to an accessory for centering a tool or a tool-holder spindle on an axis of rotation X-X of a rotating guide bush of a machining appliance, wherein it includes a straight body with longitudinal axis F-F including, at a first end, an alignment member for aligning said axis F-F with the axis X-X of the rotating guide bush and, at a second end, a head mounted rotatably mobile about the axis F-F and including a positioning member capable of receiving a positioning tool, in particular a measurement probe. The disclosure likewise relates to a centering method using such an accessory and a centering device including same.

A numerical control device for a machine tool controls a machine tool having a main spindle for attaching a tool, a table holding a workpiece and a jig, three translational axes, and one or more rotation axis. The numerical control device includes an axis-dependent deformation error estimation unit, an input unit, a gravitational deformation estimation unit, a correction value calculation unit, and an addition unit. The correction value calculation unit calculates a correction value of the translational axes and/or the rotation axis with respect to an error of a position and/or a posture of the tool with respect to the workpiece, based on an estimated value of an axis-dependent deformation error, an estimated value of a gravitational deformation error, and command values. The addition unit adds the correction values to the command values.

A height-setting tool is provided that includes a first clamping jaw, a second clamping jaw, an adjustment member, and an indicator member. The first clamping jaw includes a first clamping surface. The second clamping jaw is opposed to the first clamping jaw, and includes a second clamping surface. The first and second clamping jaws are configured to grasp a jaw of a chuck. The adjustment member is coupled to the first clamping jaw and second clamping jaw, and is configured such that a movement of the adjustment member moves the first and second clamping jaws by corresponding amounts in opposite directions. The indicator member includes an indicator surface. The indicator member is coupled to the adjustment member with the indicator surface equidistant from the first and second surfaces along a clamping direction.

A tram adapter apparatus, kit and method is used with an alignment tool to check the alignment of the spindle and the table of a machine tool. The alignment tool has two or more indicators retained in a spaced apart relation to the spindle of the machine tool. A tram adapter body is interposed between the indicator body and the stop of one of the indicators, moving the indicator tip to a retracted position. The other indicator remains in the deployed position and may be used to tram the table of the machine tool to check the alignment between the table and spindle.

An alignment tool provides for aligning the spindle of a machine tool to a work holding feature of the machine tool. The alignment tool may include one indicator or may include a first indicator and a second indicator in a spaced-apart relation. The faces of the indicators are rotatable. In use, a machinist may attach the indicators to the spindle of a machine tool, advance the spindle or work holding feature until the indicator tips contact the work holding feature. The machinist can rotate the faces so that the machinist can read the indicator faces without placing the machinist's head within the envelope of tool movement of the machine tool.

A spindle repair kit including a pair of alignment mandrels positionable in a respective spindle bore of a steering spindle. An alignment rod is operative to retain the mandrels in their respective spindle bores. The kit can also include a first clamp member and a second clamp member, each being positionable between the spindle bores. The kit includes a drill fixture including a drill mounting surface and a bearing fixture including a bearing aperture sized to receive the alignment rod. Fasteners clamp the drill fixture and first clamp member to the first spindle bore and clamp the bearing holder and second clamp member to the second spindle bore. The kit includes an arbor connectable to a drill and a reamer, wherein the arbor is sized to position the reamer in the first spindle bore.

A spindle repair kit including a pair of alignment mandrels positionable in a respective spindle bore of a steering spindle. An alignment rod is operative to retain the mandrels in their respective spindle bores. The kit can also include a first clamp member and a second clamp member, each being positionable between the spindle bores. The kit includes a drill fixture including a drill mounting surface and a bearing fixture including a bearing aperture sized to receive the alignment rod. Fasteners clamp the drill fixture and first clamp member to the first spindle bore and clamp the bearing holder and second clamp member to the second spindle bore. The kit includes an arbor connectable to a drill and a reamer, wherein the arbor is sized to position the reamer in the first spindle bore.

A height-setting tool is provided that includes a first clamping jaw, a second clamping jaw, an adjustment member, and an indicator member. The first clamping jaw includes a first clamping surface. The second clamping jaw is opposed to the first clamping jaw, and includes a second clamping surface. The first and second clamping jaws are configured to grasp a jaw of a chuck. The adjustment member is coupled to the first clamping jaw and second clamping jaw, and is configured such that a movement of the adjustment member moves the first and second clamping jaws by corresponding amounts in opposite directions. The indicator member includes an indicator surface. The indicator member is coupled to the adjustment member with the indicator surface equidistant from the first and second surfaces along a clamping direction.

A spindle repair kit including a pair of alignment mandrels positionable in a respective spindle bore of a steering spindle. An alignment rod is operative to retain the mandrels in their respective spindle bores. The kit can also include a first clamp member and a second clamp member, each being positionable between the spindle bores. The kit includes a drill fixture including a drill mounting surface and a bearing fixture including a bearing aperture sized to receive the alignment rod. Fasteners clamp the drill fixture and first clamp member to the first spindle bore and clamp the bearing holder and second clamp member to the second spindle bore. The kit includes an arbor connectable to a drill and a reamer, wherein the arbor is sized to position the reamer in the first spindle bore.