A cutting tool includes: a cutting part including a cutting edge having a linear shape; and a fitted part including a fixed section to which the cutting part is fixed, and a fitted part body to be fitted to a cutting device. The cutting edge is located perpendicularly to a virtual line passing through a central axis of the fitted part body, on a plane that is perpendicular to the central axis of the fitted part body. A center of the cutting edge in its longitudinal direction is located on the virtual line.

Provided is a grinding method capable of preventing variation in the outer diameter of a processed object 1 at the completion of grinding regardless of change in the amount of elastic deformation of the processed object 1 based on the change in the cutting ability of a grindstone 4. The outer diameter D of the processed object 1 during grinding is measured by gauge heads 5 in process. Plural target values D.sub.i that differ from each other are set for the outer diameter D of the processed object 1, and first threshold values are set for the rate of change of the outer diameter D of the processed object for each of these target values D.sub.i. Spark out is started when the outer diameter D of the processed object 1 becomes equal to a target value D.sub.i and the absolute value of the rate of change v is greater than a first threshold value that corresponds to the target value D.sub.i.

Provided is a grinding method capable of preventing variation in the outer diameter of a processed object 1 at the completion of grinding regardless of change in the amount of elastic deformation of the processed object 1 based on the change in the cutting ability of a grindstone 4. The outer diameter D of the processed object 1 during grinding is measured by gauge heads 5 in process. Plural target values D.sub.i that differ from each other are set for the outer diameter D of the processed object 1, and first threshold values are set for the rate of change of the outer diameter D of the processed object for each of these target values D.sub.i. Spark out is started when the outer diameter D of the processed object 1 becomes equal to a target value D.sub.i and the absolute value of the rate of change v is greater than a first threshold value that corresponds to the target value D.sub.i.

A manually operable pump for the effective removal of fluids to include blood, blood clots, fluid, and air from a body cavity of a subject is provided. The manually operable pump is adapted to be connect to a range of fluid conduits and is equipped with one-way valves that effectively permit flow of fluid through the pump in only one direction. The sensitivity of the one-way valves is such that when properly positioned, fluid can flow through the valves and out of the pump without manual compression of the pump and with the aid of gravity power alone.

A manually operable pump for the effective removal of fluids to include blood, blood clots, fluid, and air from a body cavity of a subject is provided. The manually operable pump is adapted to be connect to a range of fluid conduits and is equipped with one-way valves that effectively permit flow of fluid through the pump in only one direction. The sensitivity of the one-way valves is such that when properly positioned, fluid can flow through the valves and out of the pump without manual compression of the pump and with the aid of gravity power alone.

A honing assembly, a sanding assembly and a turning machine for performing an operation on a workpiece. The turning machine may include a rotatable machine housing operable to rotate around the workpiece; a first attachment including a first portion engageable with and operable to remove material from a workpiece, the first attachment having a first configuration, such as a honing attachment; and a second attachment including a second portion engageable with and operable to remove material from a workpiece, the second attachment having a second configuration, such as a sanding attachment, different than the first configuration, each of the first attachment and the second attachment being selectively supportable one at a time by the machine housing to operate on a workpiece.

A honing assembly, a sanding assembly and a turning machine for performing an operation on a workpiece. The turning machine may include a rotatable machine housing operable to rotate around the workpiece; a first attachment including a first portion engageable with and operable to remove material from a workpiece, the first attachment having a first configuration, such as a honing attachment; and a second attachment including a second portion engageable with and operable to remove material from a workpiece, the second attachment having a second configuration, such as a sanding attachment, different than the first configuration, each of the first attachment and the second attachment being selectively supportable one at a time by the machine housing to operate on a workpiece.

A method and device for simultaneous centreless cylindrical grinding of multiple workpieces (11, 12, 13, 14), at least sections of which are rotationally symmetrical, the workpieces are arranged on a support apparatus (200) one behind the other between at least one grinding wheel (110) and at least one regulating wheel (120), and wherein the axis of rotation of the regulating wheel is inclined with respect to a horizontal plane extending parallel to the workpiece axes of rotation and the grinding wheel axis of rotation by an inclination angle (). During grinding the workpieces are arranged with a height offset relative to each other corresponding to at least a quarter of the inclination angle () of the axis of rotation of the regulating wheel with respect to the parallel plane to render the respective bearing angles () of the workpieces on the inclined regulating wheel consistent.

The workpiece conveyance apparatus includes a clamp mechanism including a pair of claw sections that clamps the workpiece, a turning mechanism configured to turn the clamp mechanism in a state of clamping the workpiece, and an X-ray apparatus configured to measure a crystal plane orientation of the workpiece clamped between a spindle pipe sleeve and a tail pipe sleeve of the cylindrical grinding apparatus main body in a state in which a center axis of the workpiece and a rotation axis of the cylindrical grinding apparatus main body coincide and output a correction value for correcting a deviation amount of a crystal axis of the workpiece with respect to the rotation axis of the cylindrical grinding apparatus main body.

The workpiece conveyance apparatus includes a clamp mechanism including a pair of claw sections that clamps the workpiece, a turning mechanism configured to turn the clamp mechanism in a state of clamping the workpiece, and an X-ray apparatus configured to measure a crystal plane orientation of the workpiece clamped between a spindle pipe sleeve and a tail pipe sleeve of the cylindrical grinding apparatus main body in a state in which a center axis of the workpiece and a rotation axis of the cylindrical grinding apparatus main body coincide and output a correction value for correcting a deviation amount of a crystal axis of the workpiece with respect to the rotation axis of the cylindrical grinding apparatus main body.