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1. 发明授权

EP1817126B1 SPANNVORRICHTUNG 有权
公开(公告)号：EP1817126B1
公开(公告)日：2012-06-20
申请号：EP05793507.4
申请日：2005-10-14
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： GREIF, Josef , BECHTELER, Wolfgang
IPC分类号： B23B31/28 , B23B31/26
CPC分类号： B23B31/265 , B23B2260/044 , B23B2260/062 , Y10T408/95 , Y10T409/309464
摘要： The invention relates to a clamping device for clamping a tool (8), or tool holder in a working spindle (4), in particular, of a machine tool, comprising a drawbar (10), arranged to be displaced within the working spindle (4), a clamping set (12), arranged in the working spindle (4) and displaceable between a clamping position and a released position by means of the drawbar (10), a spring arrangement (14) provided for the drawbar (10) to generate the drawing force for the clamping set (12) and a releasing unit (17; 49), by means of which the clamping set (12) may be moved into the released position by the drawbar (10) against the force of the spring arrangement (14). According to the invention, a simplified operation of the clamping device may be achieved, whereby the releasing unit (17; 49) may be operated by an electrical actuator (62, 63, 53, 54).

2. 发明授权

EP1663555B1 SPANNVORRICHTUNG 有权
公开(公告)号：EP1663555B1
公开(公告)日：2007-06-27
申请号：EP04764978.5
申请日：2004-09-09
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： GREIF, Josef , WENK, Wolfgang
IPC分类号： B23B31/26
CPC分类号： B23B31/261 , B23B2231/24 , B23B2260/136 , Y10S279/90 , Y10T408/953 , Y10T409/309464
摘要： The invention relates to a device for clamping a hollow shaft tool (1) or tool holder provided with a conical hollow shaft (3) in a machine spindle (2) provided with a taper bore (4), especially for use in a machine tool. Said device comprises a clamping sleeve (7), axially displaceable inside the machine spindle (2), a tow-rod (8) for displacing the clamping sleeve (7) and being movable between a release position and a clamping position, and a plurality of pincer elements (19) associated with the clamping sleeve (7). Said pincer elements are radially displaced by the displacement of the clamping sleeve (7) and have clamping faces (21, 24) to be placed on a conical inner surface (22) of the conical hollow shaft (3) and an opposite surface (26) on the work spindle (1). The aim of the invention is to provide a clamping device of the aforementioned kind wherein the hollow shaft tool is reliably retained in the machine spindle even when the tow-bar is already released. For this purpose, the clamping sleeve (7) can be axially displaced relative to the tow-bar (8) and is axially biased by a compression spring (14) against the motion of release of the tow-bar (8).

3. 发明公开

EP1663555A1 SPANNVORRICHTUNG 有权
公开(公告)号：EP1663555A1
公开(公告)日：2006-06-07
申请号：EP04764978.5
申请日：2004-09-09
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： GREIF, Josef , WENK, Wolfgang
IPC分类号： B23B31/26
CPC分类号： B23B31/261 , B23B2231/24 , B23B2260/136 , Y10S279/90 , Y10T408/953 , Y10T409/309464
摘要： The invention relates to a device for clamping a hollow shaft tool (1) or tool holder provided with a conical hollow shaft (3) in a machine spindle (2) provided with a taper bore (4), especially for use in a machine tool. Said device comprises a clamping sleeve (7), axially displaceable inside the machine spindle (2), a tow-rod (8) for displacing the clamping sleeve (7) and being movable between a release position and a clamping position, and a plurality of pincer elements (19) associated with the clamping sleeve (7). Said pincer elements are radially displaced by the displacement of the clamping sleeve (7) and have clamping faces (21, 24) to be placed on a conical inner surface (22) of the conical hollow shaft (3) and an opposite surface (26) on the work spindle (1). The aim of the invention is to provide a clamping device of the aforementioned kind wherein the hollow shaft tool is reliably retained in the machine spindle even when the tow-bar is already released. For this purpose, the clamping sleeve (7) can be axially displaced relative to the tow-bar (8) and is axially biased by a compression spring (14) against the motion of release of the tow-bar (8).
摘要翻译：本发明涉及一种用于在设有锥形孔（4）的机器主轴（2）中夹紧具有锥形空心轴（3）的空心轴工具（1）或工具夹具的装置，尤其用于机床。所述装置包括可在机器主轴（2）内轴向移动的夹紧套筒（7），用于移动夹紧套筒（7）并可在释放位置和夹紧位置之间移动的拖杆（8），以及多个的与夹紧套筒（7）相关联的夹钳元件（19）。所述钳形元件通过夹紧套筒（7）的位移而径向地移位，并且具有夹持面（21,24）以放置在锥形中空轴（3）的圆锥形内表面（22）上并且相对的表面（26 ）安装在工作主轴（1）上。本发明的目的是提供一种前述类型的夹紧装置，其中，即使当拖杆已经被释放时，空心轴工具也可靠地保持在机器主轴中。为此，夹紧套筒（7）可以相对于牵引杆（8）轴向移位并且通过压缩弹簧（14）轴向地偏压牵引杆（8）的释放运动。

4. 发明公开

EP1514047A1 DREHDURCHFÜHRUNG 有权
公开(公告)号：EP1514047A1
公开(公告)日：2005-03-16
申请号：EP03757020.7
申请日：2003-06-04
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： JAKOB, Ludwig , GREIF, Josef , BECHTELER, Wolfgang
IPC分类号： F16L27/08
CPC分类号： F16L27/082 , F16L27/0828 , Y10T137/2559 , Y10T409/304032
摘要： The invention relates to a rotary feedthrough, comprising a hollow shaft (4), rotatably mounted in a first housing piece (1), with a first sealing surface (13) and a sealing bush (15) arranged in a second housing piece (2) in a fixed manner coaxial to the hollow shaft (4) with a second sealing surface (14) for contact with the first sealing surface (13). The aim of reduced wear as well as reduced leakage losses on introduction of cooling lubricants and compressed air can be achieved, whereby the second housing piece (2) has a first lateral feed channel (27) which may be connected to a coolant supply line (41) or a compressed air supply line (36), for introduction of the cooling lubricant or compressed air by means of at least one radial opening (24) in the sealing bush (15) and a second supply line (30), pressurised on supply of the cooling lubricant, for the introduction of cooling lubricant to a pressure piston (18) sealing the rear end of the sealing bush (15) to increase the compression pressure on the sealing surfaces (13, 14).

5. 发明公开

EP1453630A1 SPANNVORRICHTUNG 有权
公开(公告)号：EP1453630A1
公开(公告)日：2004-09-08
申请号：EP02787836.2
申请日：2002-11-27
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： JAKOB, Ludwig , GREIF, Josef
IPC分类号： B23B31/26
CPC分类号： B23B31/261 , Y10T279/17153 , Y10T279/29 , Y10T408/95 , Y10T409/309464
摘要： The invention relates to a clamping device for releasibly fixing one first machine part (1) containing a cone-shaped drilled shank (3) to a second machine part (2) containing a female bore (4). Said clamping device comprises an axially movable clamping sleeve (6) inside the second machine part (2) and several clamping claws (11) assigned to the clamping sleeve (6) that are radially movable through axial movement of the clamping sleeve (6) and that have a clamping surface (13) so as to position the clamping claws (11) against a cone-shaped inner surface (14) of the cone-shaped drilled shank (3). In order to create an easily mountable and inexpensive additional fixing mechanism by means of which the first machine part can be secured in a simple and reliable manner even if the clamping elements have been released, a split taper socket (39, 48) with radially resilient clamping segments (43) is disposed in the second machine part (2), enabling frictionally engaged fixing of the first machine part (1).

6. 发明授权

EP1514047B1 DREHDURCHFÜHRUNG 有权
标题翻译：旋转式领导
公开(公告)号：EP1514047B1
公开(公告)日：2006-10-25
申请号：EP03757020.7
申请日：2003-06-04
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： JAKOB, Ludwig , GREIF, Josef , BECHTELER, Wolfgang
IPC分类号： F16L27/08
CPC分类号： F16L27/082 , F16L27/0828 , Y10T137/2559 , Y10T409/304032
摘要： The invention relates to a rotary feedthrough, comprising a hollow shaft (4), rotatably mounted in a first housing piece (1), with a first sealing surface (13) and a sealing bush (15) arranged in a second housing piece (2) in a fixed manner coaxial to the hollow shaft (4) with a second sealing surface (14) for contact with the first sealing surface (13). The aim of reduced wear as well as reduced leakage losses on introduction of cooling lubricants and compressed air can be achieved, whereby the second housing piece (2) has a first lateral feed channel (27) which may be connected to a coolant supply line (41) or a compressed air supply line (36), for introduction of the cooling lubricant or compressed air by means of at least one radial opening (24) in the sealing bush (15) and a second supply line (30), pressurised on supply of the cooling lubricant, for the introduction of cooling lubricant to a pressure piston (18) sealing the rear end of the sealing bush (15) to increase the compression pressure on the sealing surfaces (13, 14).

7. 发明公开

EP1313584A2 BETÄTIGUNGSVORRICHTUNG FÜR EINEN WERKZEUG- ODER WERKSTÜCKSPANNER IN EINER WERKZEUGMASCHINENSPINDEL 有权
标题翻译：控制装置在机床主轴上的刀具或工件CLAMP
公开(公告)号：EP1313584A2
公开(公告)日：2003-05-28
申请号：EP01969647.5
申请日：2001-08-25
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： JAKOB, Ludwig , GREIF, Josef
IPC分类号： B23B1/00
CPC分类号： B23B31/4073 , B23B31/30 , Y10T279/12 , Y10T408/95 , Y10T409/303976 , Y10T409/304032 , Y10T409/309464
摘要： The invention relates to an actuating device for a tool or a workpiece tensioning jack in a machine tool spindle, comprising a pressure piston (10) which is arranged inside a housing (5, 6) for actuating the tool or workpiece tensioning jack (2). In order to provide a compact, space-saving actuating device enabling leakage fluid to be drained off in a simple manner, several interspaced continuous bores (16) are arranged concentrically around a centre axis (15) in a side wall (17) of the housing (5,6), pressure plungers(14) which are axially displaceable with the aid of the pressure piston are disposed therein and the housing contains at least one leakage channel (22) with a section (25) extending between the pressure plungers (14) in a radially outer direction.

8. 发明授权

EP1855829B1 Spannsystem 有权
公开(公告)号：EP1855829B1
公开(公告)日：2009-06-24
申请号：EP06703825.7
申请日：2006-01-21
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： MOHR, Peter , GREIF, Josef
IPC分类号： B23B31/26
CPC分类号： B23B31/265 , B23B31/02 , B23B2231/52 , Y10T279/17564 , Y10T279/17632 , Y10T279/17752 , Y10T409/309296 , Y10T409/309464 , Y10T409/30952
摘要： The invention relates to a clamping device for removably mounting a tool (3) or a tool fixture in a receiving part (1). Said clamping device comprises several pincers elements (33) which are concentrically arranged around a central axis (32) within the receiving part (1) and are impinged upon by a tension spring (39) so as to be moved into a clamping position in order to brace the tool (3) or the tool fixture. In order to be able to automatically replace a tool without using much force and energy, an axially movable closing element (17) is assigned to the pincers elements (33). Said closing element (17) impinges the pincers elements (33) in a forward position that is advanced in the direction of the pincers elements (33) for mounting purposes in the clamping position thereof, which is swiveled inward by means of the tension spring (39), while being movable into a retracted position with the aid of a detaching device (12, 16, 45, 46, 47) in order to release the pincers elements (3).

9. 发明授权

EP1313584B1 BETÄTIGUNGSVORRICHTUNG FÜR EINEN WERKZEUG- ODER WERKSTÜCKSPANNER IN EINER WERKZEUGMASCHINENSPINDEL 有权
标题翻译：控制装置在机床主轴上的刀具或工件CLAMP
公开(公告)号：EP1313584B1
公开(公告)日：2004-11-17
申请号：EP01969647.5
申请日：2001-08-25
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： JAKOB, Ludwig , GREIF, Josef
IPC分类号： B23B31/30
CPC分类号： B23B31/4073 , B23B31/30 , Y10T279/12 , Y10T408/95 , Y10T409/303976 , Y10T409/304032 , Y10T409/309464
摘要： The invention relates to an actuating device for a tool or a workpiece tensioning jack in a machine tool spindle, comprising a pressure piston (10) which is arranged inside a housing (5, 6) for actuating the tool or workpiece tensioning jack (2). In order to provide a compact, space-saving actuating device enabling leakage fluid to be drained off in a simple manner, several interspaced continuous bores (16) are arranged concentrically around a centre axis (15) in a side wall (17) of the housing (5,6), pressure plungers(14) which are axially displaceable with the aid of the pressure piston are disposed therein and the housing contains at least one leakage channel (22) with a section (25) extending between the pressure plungers (14) in a radially outer direction.

10. 发明公开

EP1855829A2 SPANNVORRICHTUNG 有权
标题翻译：夹紧系统
公开(公告)号：EP1855829A2
公开(公告)日：2007-11-21
申请号：EP06703825.7
申请日：2006-01-21
申请人： OTT-JAKOB GmbH & Co. Spanntechnik KG
发明人： MOHR, Peter , GREIF, Josef
IPC分类号： B23B31/26
CPC分类号： B23B31/265 , B23B31/02 , B23B2231/52 , Y10T279/17564 , Y10T279/17632 , Y10T279/17752 , Y10T409/309296 , Y10T409/309464 , Y10T409/30952
摘要： The invention relates to a clamping device for removably mounting a tool (3) or a tool fixture in a receiving part (1). Said clamping device comprises several pincers elements (33) which are concentrically arranged around a central axis (32) within the receiving part (1) and are impinged upon by a tension spring (39) so as to be moved into a clamping position in order to brace the tool (3) or the tool fixture. In order to be able to automatically replace a tool without using much force and energy, an axially movable closing element (17) is assigned to the pincers elements (33). Said closing element (17) impinges the pincers elements (33) in a forward position that is advanced in the direction of the pincers elements (33) for mounting purposes in the clamping position thereof, which is swiveled inward by means of the tension spring (39), while being movable into a retracted position with the aid of a detaching device (12, 16, 45, 46, 47) in order to release the pincers elements (3).

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