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1. 发明授权

US12023743B2 Clamping device for tool holder 有权
公开(公告)号：US12023743B2
公开(公告)日：2024-07-02
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
CPC分类号： B23B31/265 , B23B2260/136 , B23B2260/146
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.

2. 发明公开

US20230405689A1 SELF-LOCKING CLAMPING SYSTEM FOR A HOLLOW SHAFT 审中-公开
公开(公告)号：US20230405689A1
公开(公告)日：2023-12-21
申请号：US18030819
申请日：2021-10-15
申请人： WTO Vermögensverwaltung GmbH
发明人： Markus Schmieder , Karlheinz Jansen
IPC分类号： B23B31/26
CPC分类号： B23B31/265 , B23B2231/20 , B23B2231/04
摘要： A self-locking clamping system for hollow shaft adapters is proposed.

3. 发明授权

US11667002B2 Method of monitoring a tool clamping device 有权
公开(公告)号：US11667002B2
公开(公告)日：2023-06-06
申请号：US17012684
申请日：2020-09-04
申请人： Ott-Jakob Spanntechnik GmbH
发明人： Florian Aschauer , Florian Merz , Wolfgang Bechteler , Josef Greif
IPC分类号： B23Q17/00 , B23Q3/08 , B23Q11/00 , B23Q16/00 , B23B31/26
CPC分类号： B23Q17/005 , B23Q3/082 , B23Q11/0085 , B23Q16/001 , B23B31/265 , B23Q2703/04 , B23Q2717/00 , Y10T409/309464
摘要： A method of monitoring a tool clamping device mounted on a machine spindle, the clamping force of which tool clamping device is generated by a spring assembly which exerts a force in the direction of the clamping position on an actuating element actuating the clamping or the release of a tool or tool holder. In the method, the spring force and the displacement of the actuating element are continuously measured during the release and/or clamping of a tool or tool holder and recorded as functions of the time. These recorded functions are used to identify at least one parameter characteristic for the status of the tool clamping device. Based on the spring force and the displacement over time, a spring characteristic curve is plotted in the form of the spring force as a function of displacement, the analysis of which spring characteristic curve provides information about a number of characteristic parameters.

4. 发明申请

US20220347764A1 CLAMPING DEVICE FOR TOOL HOLDER 有权
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.

5. 发明申请

US20220234120A1 SPINDLE AND CUTTING APPARATUS INCLUDING THE SAME 有权
公开(公告)号：US20220234120A1
公开(公告)日：2022-07-28
申请号：US17580786
申请日：2022-01-21
申请人： DGSHAPE Corporation
发明人： Kazuhito MIYAMOTO , Gota YAMAMOTO
IPC分类号： B23B31/26 , B23B31/20
摘要： A spindle includes a housing, a bearing housed in the housing, a main shaft rotatably supported by the bearing, a collet chuck extending into a through hole of the main shaft to grip a machining tool and movable in an axial direction of the main shaft, a draw bar connected to the collet chuck, an air inlet above the bearing and through which air is introduced into the housing, an air passage defined in the housing such that the air introduced into the housing through the air inlet flows below the bearing, and an air outlet in the housing and below the bearing and through which the air flowing below the bearing is discharged out of the housing.

6. 发明申请

US20210323077A1 CONNECTION DEVICE 有权
公开(公告)号：US20210323077A1
公开(公告)日：2021-10-21
申请号：US17273031
申请日：2019-09-06
申请人： SAUTER FEINMECHANIK GMBH
发明人： Markus KOTZUR , Manfred SCHANZ
IPC分类号： B23B31/26 , B23Q3/155
摘要： A connection device for connecting a tool holder (4) to a drive unit (2), which are provided on adjacently opposite contact surfaces with a serration (124, 56) each, which can be brought into engagement with each other and having a retraction device (90, 118), which reduces an axial distance between the serrations (124, 56) until they are in contact with each other.

7. 发明申请

US20210276106A1 LATHE 有权
公开(公告)号：US20210276106A1
公开(公告)日：2021-09-09
申请号：US17329504
申请日：2021-05-25
申请人： STAR MICRONICS CO., LTD.
发明人： Takayuki Ishikawa
IPC分类号： B23B31/26 , B23B31/20
摘要： A chuck operating apparatus includes a claw, a shifter, and a shifter drive unit. The rotatable claw has a first posture to bring the chuck into the opened state and a second posture to bring the chuck into the closed state. The rotatable shifter is brought in a first position to bring the claw into the first posture and in a second position to bring the claw into the second posture. The shifter drive unit has a shifter lever having an insertion part provided with a shifter bearing capable of being brought into contact with a side surface of an outward groove of the shifter. A roller is provided on one of the claw and the shifter in a contact position with the other to roll in a spindle axis direction and a groove is formed on the other to receive the roller when the chuck is in the opened state.

8. 发明授权

US10967473B2 Spindle nose with measuring function 有权
公开(公告)号：US10967473B2
公开(公告)日：2021-04-06
申请号：US16484410
申请日：2018-01-12
申请人： PRO-MICRON GMBH
发明人： Daniel Ruf , Rainer Wunderlich
IPC分类号： B23Q17/00 , B23Q17/09 , B23B31/26
摘要： A spindle nose for a machine tool spindle. The spindle nose has a longitudinal axis and a receiving end at which a conical receiving area opens. The receiving area tapers conically away from the receiving end in the direction of the longitudinal axis for receiving a tool shaft cone. A circumferential wall surrounds the receiving area and forms a circumferential contact edge. The contact edge has flat contact surfaces on which contact surfaces of the tool shaft cone rest when the tool is clamped in the tool spindle. The spindle nose defines blind receiving bores leading perpendicularly to the flat contact surfaces and which end below the flat contact surfaces. The contact edge is divided into at least four segments with the same angle. At least one receiving bore is formed in each of the segments. A sensor is arranged in each receiving bore.

9. 发明授权

US10850332B1 Hollow shank tool holder 有权
公开(公告)号：US10850332B1
公开(公告)日：2020-12-01
申请号：US16438115
申请日：2019-06-11
申请人： Kennametal Inc.
发明人： Alan Bookheimer , Ruy Frota De Souza Filho
IPC分类号： B23B31/26
摘要： Hollow shank tool holders including stress reduction features that result in a more reliable stronger tool holder are disclosed. The tool holders include an elliptical undercut contoured relief surface adjacent to the clamping surface to substantially reduce or eliminate a stress point. The elliptical undercut allows for no changes to be made to the clamping surfaces of the tool holder.

10. 发明授权

US10307836B2 Clamping device 有权
公开(公告)号：US10307836B2
公开(公告)日：2019-06-04
申请号：US15364660
申请日：2016-11-30
申请人： MTH GbR Markus und Thomas Hiestand
发明人： Karl Hiestand
IPC分类号： B23B31/28 , B23B31/26 , B23B31/175
摘要： In a clamping device (1) for machine tools (2) that is equipped with a power-operated chuck (5) and an electric drive motor (11) with a changeover function for triggering clamping movements, a motion converter (31) as well as a force accumulator (51) for maintaining the clamping force, which comprises several spring packs (52) supported on an adjustment element (32) of the motion converter (31), the spring packs (52) are each only arranged on one side of the adjustment element (32). In addition, a pressure piece (53) interacting with the adjustment element (32) is firmly connected to several spacer elements (57), each of which carries a stop disc (61) and passes through the spring packs (52) as well as a spacer (66). The spacer elements (57) and the spacers (66) can be adjusted relative to one another and the spacers (66) interact with spacer pins (71) which are guided through the pressure piece (53) and are supported on the wall (24) of the housing (21) opposite to the spring packs (52).Due to this embodiment, the spring packs (52) are always preloaded and do not have any axial play, and the adjustment movements of the pressure piece can thus be registered and evaluated directly. Rather, the spring packs (52) have a defined preload at all times, with the effect that the operating method is improved compared to embodiments of prior art.

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