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.

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.

A torque transfer assembly for a bit holder includes an axial movement limiting subassembly and a rotation limiting subassembly. The axial movement limiting subassembly is configured to retain a drive body of the bit holder in proximity to a driven body of the bit holder. The rotation limiting subassembly is configured to cause torque applied to the drive body to be transferred to the driven body. The rotation limiting subassembly includes a first cam body at a distal end of the drive body and a second cam body at a distal end of the driven body. The first and second cam bodies are configured to transfer a majority of the torque between the drive body and the driven body indirectly via the torque transfer assembly by limiting rotation of the first cam body relative to the second cam body.

An ultrasonic spindle device with automatic tool changer is disclosed. The ultrasonic spindle device includes a housing member having an inner space along a longitudinal direction, a shaft member rotatably disposed in the inner space and having a hollow portion, an ultrasonic oscillation member disposed in the hollow portion and having a through hole, a drawbar member disposed in the hollow portion to move in a front-rear direction, a portion of the drawbar member being inserted into the through hole and passing through the ultrasonic oscillation member, a clamping member connected to a front end of the drawbar member and clamping a tool, a portion of the clamping member being disposed outside the housing member, a rotation means rotating the shaft member, and a cylinder member moving the drawbar member forward or backward along a longitudinal direction of the shaft member.

A torque transfer assembly for a bit holder includes an axial movement limiting subassembly and a rotation limiting subassembly. The axial movement limiting subassembly is configured to retain a drive body of the bit holder in proximity to a driven body of the bit holder. The rotation limiting subassembly is configured to cause torque applied to the drive body to be transferred to the driven body. The rotation limiting subassembly includes a first cam body at a distal end of the drive body and a second cam body at a distal end of the driven body. The first and second cam bodies are configured to transfer a majority of the torque between the drive body and the driven body indirectly via the torque transfer assembly by limiting rotation of the first cam body relative to the second cam body.

A tool holder includes a tubular body having a shank on a first axial end portion, a tool gripping portion on a second axial end portion, and an elastic segment interposed between the shank and the tool gripping portion in the axial direction of the body. The elastic segment is more elastically deformable along the axial direction and around a circumferential direction of the tubular body than the shank and the tool gripping portion owing to a plurality of voids that extend through the elastic segment from an outer peripheral side of the tubular body to an inner peripheral side of the tubular body. Each of the voids includes segments that extend around the circumferential direction and along the axial direction of the tubular body.

A tool holder includes a tubular body having a shank on a first axial end portion, a tool gripping portion on a second axial end portion, and an elastic segment interposed between the shank and the tool gripping portion in the axial direction of the body. The elastic segment is more elastically deformable along the axial direction and around a circumferential direction of the tubular body than the shank and the tool gripping portion owing to a plurality of voids that extend through the elastic segment from an outer peripheral side of the tubular body to an inner peripheral side of the tubular body. Each of the voids includes segments that extend around the circumferential direction and along the axial direction of the tubular body.

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.

The present invention discloses a tapping shank which mainly consists of axial, radial and deflection comprehensive floating mechanisms and a high-sensitivity rolling clutch safety mechanism. The present invention has an actual safety guarantee in tapping an M1 thread, solves the problems of axial pressure and tension of a main shaft on a screw tap, and eccentric and deflection errors between the screw tap and a bottom hole, ensures the precision of a hole diameter and a longest service life of the screw tap, and is also a high-precision hole machining floating reamer shank.

A chuck device that allows easy attachment of a clamping target component and can provide powerful and highly reliable clamping includes a main body including a metal core part and an annular space coaxial with and formed around the metal core part; a rubber elastic body fitted in the annular space of the main body such that there is a pressure chamber between a circumferential wall that defines the annular space and the rubber elastic body, and a clearance for allowing a tubular clamping target component to be inserted between the rubber elastic body and the metal core part; and a passage for introducing a fluid to the pressure chamber, wherein the rubber elastic body is deformed to expand toward the metal core part by a pressure of a fluid introduced to the pressure chamber via the passage so that a tubular clamping target component that is attached to the metal core part is clamped by the metal core part and the rubber elastic body that has deformed to expand.