Abstract: A deburring tool includes: a body having a cylinder bore; an anti-rotation body protruding toward inside of the cylinder bore; a cylindrical slide shaft reciprocable inside the cylinder bore, and an elastic body urges the slide shaft toward a cutting depth direction. The slide shaft includes a guide groove having a displacement width for the slide shaft to axially displaceable with respect to the anti-rotation body, and the guide groove moves the slide shaft with respect to the body in an opposite direction to the cutting depth direction as the guide groove receives cutting resistance.

Abstract: Provided is a processing tool capable of sliding a tool relative to a shank with a simple structure, to which a tool holder is detachably attached. The processing tool to which the tool is detachably attached, includes: a body; a spindle including tool holder holding hole, a first anti-rotation body holding hole; a cover including a pressing surface and a relief portion; a tool holder detachably inserted into the tool holder holding hole, the tool holder including a first anti-rotation groove, a tool holding hole, and a first spring holding hole, an anti-rotation body movable between the first anti-rotation groove and the pressing surface, the anti-rotation body accommodated in the relief portion when the cover is located at the detachable position and the tool holder is removed from the tool holder holding hole; and an elastic member to urge the tool holder toward distal end.

Abstract: A deburring tool includes a body including a cylinder chamber having a tool holder holding hole, and an anti-rotation body holding hole; a tool holder having an anti-rotation groove and disposed in the cylinder chamber to reciprocate in the cylinder chamber; a first elastic body disposed inside the cylinder chamber to urge the tool holder toward a distal end; a cover disposed outside the body to reciprocate between a detaching position and a processing position, the cover including, a pressing surface that covers the anti-rotation body holding hole at the processing position, and a relief portion; and an anti-rotation body accommodated in the relief portion when the cover is positioned at the detaching position and the tool holder is pulled from the tool holder holding hole.

Abstract: A deburring method includes rotating a case, a sleeve and a drive gear together with a spindle of a machining tool; transmitting rotating torque from the drive gear to a driven gear to rotate a tip tool together with a reciprocating shaft; receiving reactive torque to the tip tool in a reverse direction of a rotational direction of the case by a workpiece contact with the tip tool so that the reciprocating shaft rotates in a reverse direction of the rotational direction with respect to the sleeve; moving the reciprocating shaft to a basal end direction against an elastic force of a second spring with the driven gear sliding with respect to the drive gear; and cutting the workpiece by the tip tool.

Abstract: A deburring tool includes: a case; a hollow sleeve that reciprocates inside the cylinder in a non-rotating manner; a drive gear disposed inside the sleeve, includes a first tooth, and rotates together with the case and the sleeve; a reciprocating shaft disposed inside the sleeve, including a driven gear disposed at a basal end portion of the sleeve and a basal end side of the drive gear, the driven gear including a second tooth, a tool holder disposed at a distal end portion of the sleeve, and slides inside the sleeve in a rotational and reciprocating direction, and a stem that fixes the driven gear and the tool holder, and penetrates the drive gear, a first spring that urges the sleeve toward distal end direction; and a second spring that urges the tool holder from the drive gear toward distal end direction.

Abstract: The present disclosure provides a deburring apparatus and a deburring method that does not require a positioning engagement part that is engaged with a fixed part of a machine tool. The deburring apparatus (10) includes a housing (1) with a shank (11), a transmission rod (3), a recovery rod (5), a tilting shaft (4), a spring (6), a holder (7), and a rotary-to-rectilinear motion conversion mechanism (9) with a plunger (8). The spring forces the recovery rod toward the tilting shaft. The holder for fixing the cutter (101) is arranged on the tilting shaft in a manner rotatable through a predetermined rotation angle. The rotary-to-rectilinear motion conversion mechanism separates the first flange portion from the second flange portion and brings the plunger into contact with the recovery rod on the tilting axis (43) when the holder rotates in a direction opposite to the rotation direction of the shank (11).

Abstract: A deburring tool includes: a case; a hollow sleeve that reciprocates inside the cylinder in a non-rotating manner; a drive gear disposed inside the sleeve, includes a first tooth, and rotates together with the case and the sleeve; a reciprocating shaft disposed inside the sleeve, including a driven gear disposed at a basal end portion of the sleeve and a basal end side of the drive gear, the driven gear including a second tooth, a tool holder disposed at a distal end portion of the sleeve, and slides inside the sleeve in a rotational and reciprocating direction, and a stem that fixes the driven gear and the tool holder, and penetrates the drive gear, a first spring that urges the sleeve toward distal end direction; and a second spring that urges the tool holder from the drive gear toward distal end direction.

Abstract: A deburring tool for stable processing is provided. The deburring tool includes a cylindrical housing; a spindle loosely fitted and supported to be tiltable with respect to an axis of the housing, the spindle having a rotatable attachment portion for detachably attaching a cutting tool at a distal end; a pressed member arranged to the spindle; a piston slidably disposed inside the housing, the piston configured to press the pressed member toward the distal end; an elastic member configured to urge the piston toward the distal end; a separate ring arranged between the piston and the elastic member; and a flow path for supplying a compressible fluid between the separate ring and the piston.

Abstract: An inner surface finishing tool enables machining of a workpiece made of a material machinable with a relatively large burnishing amount while reducing deformation at the opening of the workpiece or deterioration of its geometrical tolerance during machining of the inner peripheral surface. The tool includes a mandrel rotatable relative to the workpiece and includes a polygonal member, and a frame that is cylindrical and fitted onto the mandrel in a rotatable manner and has an axis extending in an axial direction of the mandrel and holds a plurality of first rollers and a plurality of second rollers rollable on an outer peripheral surface of the mandrel. The polygonal member rotates the plurality of second rollers to move inward and outward in a radial direction of the frame.

Abstract: A deburring tool for stable processing is provided. The deburring tool includes a cylindrical housing; a spindle loosely fitted and supported to be tiltable with respect to an axis of the housing, the spindle having a rotatable attachment portion for detachably attaching a cutting tool at a distal end; a pressed member arranged to the spindle; a piston slidably disposed inside the housing, the piston configured to press the pressed member toward the distal end; an elastic member configured to urge the piston toward the distal end; a separate ring arranged between the piston and the elastic member; and a flow path for supplying a compressible fluid between the separate ring and the piston.

Abstract: An inner surface finishing tool enables machining of a workpiece made of a material machinable with a relatively large burnishing amount while reducing deformation at the opening of the workpiece or deterioration of its geometrical tolerance during machining of the inner peripheral surface. The tool includes a mandrel rotatable relative to the workpiece and includes a polygonal member, and a frame that is cylindrical and fitted onto the mandrel in a rotatable manner and has an axis extending in an axial direction of the mandrel and holds a plurality of first rollers and a plurality of second rollers rollable on an outer peripheral surface of the mandrel. The polygonal member rotates the plurality of second rollers to move inward and outward in a radial direction of the frame.

Abstract: A method for enabling a computer to select a burnishing tool model using information about customer requests input into the computer. The method for selecting a burnishing tool model include receiving a machining shape, a material, and a finished product dimension, selecting a display tool type using a display tool type selection unit, outputting the display tool type using an output unit, receiving a specified type through an input unit, outputting a branch condition using the output unit, receiving a specified condition through the input unit, selecting a selective tool model using a tool model selection unit, and outputting the selective tool model using the output unit.

Abstract: An ink ejection device for ejecting ink comprises: a piezoelectric ceramic plate for defining an ink channel for containing ink, the piezoelectric ceramic plate deforming by application of an electric voltage thereto so as to change the volume in the ink channel and eject ink from the ink channel, the piezoelectric ceramic plate being formed by injection molding so that the piezoelectric ceramic plate having one surface with a surface roughness Rz (defined in Japanese Industrial Standard "JIS B 0601") of 1 .mu.m or less; and a metal electrode provided on the surface of the piezoelectric ceramic plate for applying the electric voltage to the piezoelectric ceramic plate.

Abstract: A method of manufacturing an ink jet head including an ink-chamber member having ink chambers, and a nozzle plate secured to a front end face of the ink-chamber member and which has ink-jet holes communicating with the respective ink chambers, wherein a blank for the nozzle plate is formed by injection molding, such that blind holes are formed in one of opposite surfaces of the blank and such that each blind hole has a varying-area portion whose cross sectional area decreases in a direction from the above-indicated one of opposite surfaces of the blank toward the other surface, and the blank is subjected to laser-cutting to prepare the nozzle plate having orifice holes which cooperate with the blind holes to form the ink-jet holes. The size of each blind hole at an open end thereof is preferably smaller than the size of the ink chamber at an end thereof at which the ink chamber communicates with the ink-jet hole.

Abstract: An arrangement of two elements of a sewing machine which are in frictional, or sliding, contact during operation. At least one of elements is formed of a ceramic material and a minute amount of a lubrication oil is applied to the frictional, or siding, portion defining the surfaces in contact. Such a combination of elements is found in the upper looper mechanism, the shuttle body assembly, the needle bar mechanism and the fabric piece feeding mechanism in a sewing machine that are subject to high speed, high load friction or sliding conditions.

Abstract: Disclosed is a hydraulic servomechanism including a control loop consisting of an input device, an adder-amplifier, a servovalve, a cylinder or actuator and a load operatively connected in the order named for controlling the position of the load, a position feedback loop and an acceleration feedback loop. In one embodiment of the invention, the hydraulic servomechanism further includes a feedback loop wherein an output from an accelerometer or pressure sensor for detecting a differential pressure across a piston in the cylinder and an error signal from the adder-amplifier are arithmetically processed and fed back to the adder-amplifier.