公开(公告)号：US20230146914A1

公开(公告)日：2023-05-11

申请号：US17800091

申请日：2021-02-02

申请人： AB SANDVIK COROMANT

发明人： Jonas WASTERLUND ,  Gunnar MATLIK

IPC分类号： B23B31/12

CPC分类号： B23B31/12

摘要： A clamping device for releasably holding a tool holder shank includes a housing, a drawbar axially moveable in a bore in the housing, engagement members moveable under the effect of the drawbar into locking engagement with the tool holder shank, and an actuating member rotatably arranged in the bore. Upon rotation of the actuating member, a contact surface on a motion transferring element fixedly connected to the actuating member achieves an axial movement of the drawbar by pressing against a contact surface on another motion transferring element fixedly connected to the drawbar. At least one of the contact surfaces includes two sections with mutually different pitch, such that the same angular displacement of the actuating member, when rotated in a first rotary direction, results in a longer axial movement of the drawbar in a first phase of the rotary movement than in a final phase thereof.

公开(公告)号：US20230001493A1

公开(公告)日：2023-01-05

申请号：US17778330

申请日：2020-11-16

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/26

摘要： A clamping device for releasably holding a tool holder shank includes a spindle rotatably mounted inside a housing. A drawbar is axially moveable in a bore in the housing between an advanced releasing position and a retracted locking position. A plurality of engagement members are moveable under the effect of the drawbar into locking engagement with the tool holder shank. An actuating sleeve is arranged around a peripheral wall of the spindle and axially moveable in relation to it. A motion transferring mechanism is arranged for transferring an axial movement of the actuating sleeve into a movement of the drawbar. A hydraulic cylinder arrangement is arranged for moving the actuating sleeve. The hydraulic cylinder arrangement includes a cylinder casing fixed to spindle and an annular piston head, which is fixed to or fixedly connected to the actuating sleeve and slidably received in an annular space inside the cylinder casing.

公开(公告)号：US20220347765A1

公开(公告)日：2022-11-03

申请号：US17778322

申请日：2020-11-16

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK ,  Jonas WASTERLUND

IPC分类号： B23B31/26

摘要： A clamping device for releasably holding a tool holder shank includes a spindle rotatably mounted inside a housing. A drawbar is axially moveable in a bore in the housing between an advanced releasing position and a retracted locking position. A plurality of engagement members are moveable under the effect of the drawbar into locking engagement with the tool holder shank. An actuating member is slidably mounted to the spindle. A motion transferring mechanism is arranged for transferring an axial movement of the actuating member into a movement of the drawbar. Two or more hydraulic actuators are arranged in or mounted on the housing on different sides of the spindle and configured to move the actuating member in relation to the spindle. A connecting element forms a connection in radial direction between the actuating member and piston members of the hydraulic actuators.

公开(公告)号：US20220347764A1

公开(公告)日：2022-11-03

申请号：US17618001

申请日：2020-06-09

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/26

摘要： A clamping device is arranged for releasably holding a tool holder shank and includes a housing, a wedge engagement member reciprocally mounted inside the housing, and a wedge having a first pressure receiving surface and first and second wedge surfaces. An aperture extends radially through a wall of the housing and the wedge engagement member extends radially outwards into the aperture. The first wedge surface acts upon a wedge engagement slide surface on the wedge engagement member and the second wedge surface acts upon an aperture slide surface. The wedge is arranged between a surface of the housing and a surface of a member securely arranged to a drawbar to effectuate a displacement of the drawbar when the wedge is moved inwards, to clamp the tool holder shank. A sleeve is arranged around the peripheral surface of the housing for moving the wedge inwards when the sleeve is moved.

公开(公告)号：US20240278334A1

公开(公告)日：2024-08-22

申请号：US18572907

申请日：2022-03-30

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/26 ,  B23B31/30

CPC分类号： B23B31/261 ,  B23B31/302 ,  B23B2260/146

摘要： A clamping device for releasably holding a tool holder shank includes a spindle rotatably mounted inside a housing, a drawbar axially moveable in a bore in the housing between an advanced releasing position and a retracted locking position, engagement members moveable under the effect of the drawbar into locking engagement with the tool holder shank, an actuating member slidably mounted to the spindle, a motion transferring mechanism for transferring an axial movement of the actuating member into a movement of the drawbar, and a cylinder housing and an associated piston member for moving the actuating member in relation to the spindle. The cylinder housing is arranged in the housing in an axially floating manner. The actuating member is rotatable in relation to the cylinder housing and the piston member together with the spindle.

公开(公告)号：US20230271261A1

公开(公告)日：2023-08-31

申请号：US18008998

申请日：2021-06-07

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/30

CPC分类号： B23B31/302

摘要： A clamping device for releasably holding a tool holder shank includes a spindle rotatably mounted inside a housing, a drawbar axially moveable in a bore in the housing, engagement members moveable under the effect of the drawbar into locking engagement with the tool holder shank, an actuating member slidably mounted to the spindle, a motion transferring mechanism for transferring an axial movement of the actuating member into a movement of the drawbar, and a hydraulic actuator with a piston unit for moving the actuating member. A valve assembly with two parallel and oppositely directed check valves provides a residual hydraulic pressure in a hydraulic chamber of the hydraulic actuator that will affect an automatic return movement of the piston unit after a movement of the drawbar to a retracted locking position.

公开(公告)号：US20220250165A1

公开(公告)日：2022-08-11

申请号：US17617966

申请日：2020-06-09

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK ,  Jonas WASTERLUND

IPC分类号： B23B29/04 ,  B23B31/26

摘要： A clamping device is arranged for releasably holding a tool holder shank. The clamping device includes a housing, a drawbar mounted reciprocally movable inside a bore in the housing, and an actuator. An aperture extends along an actuator axis and is delimited by an aperture housing surface and a drawbar groove. A first locking pressure applying surface on the actuator acts upon a first locking pressure receiving surface in the drawbar groove to effectuate a displacement of the drawbar when the actuator is moved along the actuator axis in a first direction, resulting in clamping of the tool holder shank.

公开(公告)号：US20240293873A1

公开(公告)日：2024-09-05

申请号：US18572881

申请日：2022-03-30

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/26 ,  B23B31/30

CPC分类号： B23B31/261 ,  B23B31/302 ,  B23B2231/12 ,  B23B2260/146

摘要： A clamping device is arranged for releasably holding a tool holder shank. The clamping device includes a housing, a drawbar axially moveable in a bore in the housing in a first axial direction between an advanced releasing position and a retracted locking position, engagement members moveable under the effect of the drawbar into locking engagement with the tool holder shank, a sleeve-shaped actuating member surrounding a part of the drawbar and axially moveable in relation to it, a piston received in the bore and fixed to the actuating member, and a wedge arranged on the outside of the drawbar and configured to move the drawbar rearwards in the bore when pressed inwards towards a longitudinal center axis of the drawbar by movement of the piston and the actuating member in the first axial direction.

公开(公告)号：US20220388075A1

公开(公告)日：2022-12-08

申请号：US17786215

申请日：2020-12-09

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/26

摘要： A clamping device for releasably holding a tool holder shank includes a housing, a drawbar axially moveable in a bore in the housing between an advanced releasing position and a retracted locking position, engagement members moveable under the effect of the drawbar into locking engagement with the tool holder shank, and a sleeve arranged around a wall of the housing and axially moveable in relation to it. A first wedge is received in a first aperture in the wall and configured to move the drawbar rearwards in the bore when pressed radially inwards in the aperture by movement of the sleeve in a first axial direction. A second wedge is received in a second aperture in the wall and configured to move the drawbar forwards in the bore when pressed radially inwards in the aperture by movement of said sleeve in an opposite axial direction.

公开(公告)号：US20210046558A1

公开(公告)日：2021-02-18

申请号：US17049481

申请日：2019-04-16

申请人： AB SANDVIK COROMANT

发明人： Gunnar MATLIK

IPC分类号： B23B31/26

摘要： A clamping device for releasably holding a tool holder shank includes a housing and a drawbar mounted reciprocally inside a bore of the housing and which in a forward end includes an engagement means, which is arranged to engage an engagement formation located at the end of the tool holder shank and in a rear portion is formed with a drawbar aperture. The clamping device further includes a clamping mechanism extending through the drawbar aperture, which is to impart an axial displacement of the drawbar to and fro in the direction of the longitudinal axis of the housing. The clamping mechanism includes a first and a second actuator and an actuator bolt interconnecting the actuators, extending through the drawbar aperture and arranged such that a rotation of the actuator bolt causes the actuators to move synchronously towards or apart from one another, imparting an axial movement of the drawbar.