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1. 发明申请

US20220314349A1 Skiving Tool and Method for Skiving Processing a Gear Wheel Blank 有权
公开(公告)号：US20220314349A1
公开(公告)日：2022-10-06
申请号：US17710455
申请日：2022-03-31
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Walter Holderbein , Jörg Reinhardt
IPC分类号： B23F5/16 , B23F21/08
摘要： The invention relates to a skiving tool which is designed as a disposable tool and which includes a first front side, a second front side, a toothing formed on its circumference and having teeth. The front surfaces assigned to the first front side are each delimited by a first cutting edge, as well as a coupling device for coupling the skiving tool to a tool spindle of a skiving machine. In order to enable an extended use in the case of such a skiving tool, the invention provides that the skiving tool has the basic shape of a cylindrical disc, that the front surfaces of the teeth assigned to the second front side are each delimited by a second cutting edge, and that the coupling device for use enables coupling of the skiving tool to the tool spindle such that the cutting edges assigned to its first front side come into engagement with the gear wheel to be processed, and enables coupling of the skiving tool to the tool spindle such that the cutting edges assigned to its second front side come into engagement with the gear wheel to be processed. During use, when the first cutting edges have reached their wear limit, the skiving tool is turned and skiving processing is continued with the same skiving tool until the second cutting edges have also reached their wear limit.

2. 发明授权

US11130183B2 Tool, machine and method for producing roof ridge-shaped chamfers on teeth of an internally and externally toothed gearwheel 有权
公开(公告)号：US11130183B2
公开(公告)日：2021-09-28
申请号：US16491378
申请日：2018-03-08
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Walter Holderbein
IPC分类号： B23F21/12 , B23C5/10 , B23F19/10 , B23F21/00
摘要： The invention provides a tool, a method and a machine with which roof ridge-shaped chamfers can be produced on teeth of an internally and externally toothed gearwheel with minimised changeover times during tool set up. For this purpose, a tool according to the invention comprises a tool carrier having a holding section for attachment in a tool holder and a chamfering tool, which is held on the end section of the tool carrier, said end section being associated with the other end face, and during use describes an impact circle with its cutting edge, the diameter of said circle being determined by the radial distance of the cutting edge of the chamfering tool from the axis of rotation of the tool. According to the invention, at least one further chamfering tool is attached in a middle section of the tool carrier which is offset relative to the end section provided with the chamfering tool towards the holding section of the tool carrier. At the same time, the further chamfering tool is held with its cutting edge at a radial distance from the axis of rotation of the tool, which is greater than the radial distance of the cutting edge of the chamfering tool held on the end section of the tool holder. A method according to the invention and a machine according to the invention are based on the use of tools according to the invention.

3. 发明申请

US20200147705A1 Method for Chipping Production of a Gear Wheel Provided with Double-Helical Teeth 审中-公开
公开(公告)号：US20200147705A1
公开(公告)日：2020-05-14
申请号：US16683777
申请日：2019-11-14
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Walter Holderbein
IPC分类号： B23F5/20 , B23F7/00
摘要： The invention makes available a method for the production of gear wheels, with which it is possible to produce gear wheels having double-helical teeth, in particularly efficient manner. For this purpose, in the case of the method according to the invention for chipping production of a gear wheel, which is provided with double-helical teeth, in which the teeth of the one gear half are configured to run counter to the teeth of the other gear half, in rising manner, wherein the gear halves are arranged offset from one another by an angle amount with reference to the axis of rotation of the gear wheel, a gear wheel blank is made available, on which the teeth provided on the gear wheel are produced by means of hobbing, using a hobbing wheel, which, during hobbing machining of the teeth, in each instance, of one of the gear halves, reaches all the way into the adjacent tooth gaps of the other gear half, in each instance.

4. 发明申请

US20200023445A1 Tool, Machine and Method for Producing Roof Ridge-Shaped Chamfers on Teeth of an Internally and Externally Toothed Gearwheel 审中-公开
公开(公告)号：US20200023445A1
公开(公告)日：2020-01-23
申请号：US16491378
申请日：2018-03-08
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Walter Holderbein
IPC分类号： B23C5/10 , B23F19/10 , B23F21/00
摘要： The invention provides a tool, a method and a machine with which roof ridge-shaped chamfers can be produced on teeth of an internally and externally toothed gearwheel with minimised changeover times during tool set up. For this purpose, a tool according to the invention comprises a tool carrier having a holding section for attachment in a tool holder and a chamfering tool, which is held on the end section of the tool carrier, said end section being associated with the other end face, and during use describes an impact circle with its cutting edge, the diameter of said circle being determined by the radial distance of the cutting edge of the chamfering tool from the axis of rotation of the tool. According to the invention, at least one further chamfering tool is attached in a middle section of the tool carrier which is offset relative to the end section provided with the chamfering tool towards the holding section of the tool carrier. At the same time, the further chamfering tool is held with its cutting edge at a radial distance from the axis of rotation of the tool, which is greater than the radial distance of the cutting edge of the chamfering tool held on the end section of the tool holder. A method according to the invention and a machine according to the invention are based on the use of tools according to the invention.

5. 发明申请

US20180200814A1 Method for Honing Toothed Wheels 审中-公开
公开(公告)号：US20180200814A1
公开(公告)日：2018-07-19
申请号：US15744141
申请日：2016-07-18
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke
IPC分类号： B23F19/05 , B23F5/16
摘要： A method for honing processing a toothed wheel in which the toothed wheel and a honing tool mesh with each other and the rotation axes of the toothed wheel and honing tool intersect at an axial intersection angle. The toothed wheel and honing tool carry out a relative movement which oscillates in an axial direction of the rotation axis of the toothed wheel and are positioned in a direction towards each other at the same time in a radial direction with respect to the rotation axis of the toothed wheel starting from an end position in order to remove material from the toothed wheel. During the oscillating relative movement which is directed in an axial direction of the rotation axis of the toothed wheel, the rotation position of the toothed wheel with respect to the rotation axis thereof is changed in accordance with the positioning in a radial direction.

6. 发明公开

US20240100612A1 Method for Producing Tooth Flank Modifications on Tooth Flanks of a Workpiece Toothing of a Workpiece 审中-公开
公开(公告)号：US20240100612A1
公开(公告)日：2024-03-28
申请号：US18373535
申请日：2023-09-27
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Walter Holderbein , Jörg Reinhardt
IPC分类号： B23F1/06
CPC分类号： B23F1/06
摘要： Described and shown is a method for producing tooth flank modifications, in particular twists, on tooth flanks of at least one workpiece toothing of at least one workpiece, in particular gear wheel. In order that the production of tooth flank modifications on workpiece toothings of workpieces can be carried out more economically, it is provided that the production of the tooth flank modifications is carried out by skiving by means of a skiving tool, that the workpiece is driven in a rotating manner about a workpiece rotation axis and the skiving tool is driven in a rotating manner about a tool rotation axis arranged at an axis cross angle obliquely, in particular skew, to the workpiece rotation axis, in that the skiving tool, in particular rotating about the tool rotation axis , is brought into chipping engagement with the workpiece, in particular rotating about the workpiece rotation axis, in that the skiving tool being in chipping engagement with the workpiece and rotating about the tool rotation axis is moved relative to the workpiece rotating about the workpiece rotation axis along a longitudinal axis at least substantially parallel to the workpiece rotation axis or the tool rotation axis, and in that, in order to produce the tooth flank modifications, the skiving tool moving along the longitudinal axis is moved relative to the workpiece along at least one transverse axis at least substantially perpendicular to the longitudinal axis.

7. 发明申请

US20220241879A1 Tool and Method for Creating Back Tapers at the Teeth of a Toothing of a Gear 有权
公开(公告)号：US20220241879A1
公开(公告)日：2022-08-04
申请号：US17587502
申请日：2022-01-28
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Walter Holderbein , Jörg Reinhardt
IPC分类号： B23F1/06
摘要： The present invention relates to a tool and a method for creating back tapers at an internal or external toothing of a gear. The tool rotates during use about a tool axis of rotation includes a tool shaft extending along the tool axis of rotation, a fastening section for fastening the tool to a tool drive of a machine tool, the fastening section formed at an end of the tool shaft, and at least one cutting blade, which is arranged at a fastening position provided at the circumference of the tool shaft. The tool according to the invention and the method according to the invention enable with simple means the creation of geometrically precisely shaped back tapers at toothings without the need for the use of specially shaped cutting inserts or a change of machine tools proven in practice for the creation of back tapers. This is achieved according to the invention in that the diameter of the tool shaft measured in a plane oriented normal to the tool axis of rotation increases starting from the diameter, which the tool shaft has at the fastening position of the cutting blade, in a direction directed towards the fastening section.

8. 发明申请

US20210394291A1 Tool for Producing Back-Tapers on Teeth of a Gearing of a Workpiece in the Form of a Gearwheel 有权
公开(公告)号：US20210394291A1
公开(公告)日：2021-12-23
申请号：US17353985
申请日：2021-06-22
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Jörg Reinhardt
IPC分类号： B23F19/10 , B23F21/12 , B23F23/10
摘要： The invention makes a tool available, which allows highly precise, simultaneous production of two back-tapers on the tooth flanks of the teeth of a workpiece in the form of a gearwheel, independent of their width. For this purpose, the invention provides that the tool includes a tool carrier configured in elongated manner, in the manner of a journal, and oriented coaxial to its central longitudinal axis of the tool, and includes at least two blades, which come into engagement with the tooth to be machined, in each instance, removing chips during use, wherein the blades are held on the tool carrier at a distance from one another in the longitudinal direction of the tool carrier and extend over a partial length of the tool carrier, in each instance, in terms of their width. According to the invention, in this regard the position of at least one of the blades is adjustable in relation to the other blade, so as to balance out deformations of the tool carrier that occur during use. The invention also states a method for simultaneous production of at least two back-tapers on the teeth of a workpiece in the form of a gearwheel, by means of a tool according to the invention.

9. 发明申请

US20150217389A1 Method for Modifying the Flanks of a Gear Wheel Tooth with the Aid of a Tool 有权
标题翻译：用工具助剂修改齿轮齿的侧面的方法
公开(公告)号：US20150217389A1
公开(公告)日：2015-08-06
申请号：US14428539
申请日：2013-09-17
申请人： PRÄWEMA ANTRIEBSTECHNIK GMBH
发明人： Jörg Schieke
IPC分类号： B23F23/12 , B23F19/05
CPC分类号： B23F23/1231 , B23F19/002 , B23F19/057
摘要： The invention relates to a method for modifying the geometry of gear wheel tooth flanks with a tool with a toothing that engages with the gear wheel during a precision machining. A varied profile is produced on the tool over the width of the tool, in that during a dressing procedure a dressing wheel is moved along the tooth flank of the tooth to be dressed. The width of the teeth of the dressing wheel is much smaller than the width of the tool. In order to cover the width of the tool a length must be covered corresponding to a multiple of the width of the teeth of the dressing wheel. After the dressing, the precision machining of the gear wheel is carried out with the tool. Since the dressing wheel is moved with a changing pitch and a changing crossed axes angle relative to the tool, the modification of the tooth flank geometry can be reproduced in the tool. A modification of the crossed axes angle dependent on the helical angle of the tool takes place with equalisation of the helical angle of the tool changing over the width of the teeth of the tool.
摘要翻译：本发明涉及一种用于在精密加工期间用具有与齿轮啮合的齿轮的工具来改变齿轮齿面的几何形状的方法。在工具的宽度上在工具上产生变化的轮廓，因为在修整过程中，修整轮沿着要穿着的牙齿的齿面移动。修整轮的齿宽比工具的宽度小得多。为了覆盖工具的宽度，必须对应于修整轮的齿的宽度的倍数来覆盖长度。修整后，用工具进行齿轮的精密加工。由于修整轮相对于工具以变化的间距移动并且改变交叉轴角度，所以可以在工具中再现齿面几何形状的修改。取决于刀具的螺旋角的交叉轴角的修改是在刀具的螺旋角均匀化在刀具的齿宽度上变化的。

10. 发明公开

US20240042537A1 Method for Producing Back-Tapers on Teeth of a Gearing of a Workpiece in the Form of a Gearwheel 审中-公开
公开(公告)号：US20240042537A1
公开(公告)日：2024-02-08
申请号：US18488455
申请日：2023-10-17
申请人： Präwema Antriebstechnik GmbH
发明人： Jörg Schieke , Jörg Reinhardt
IPC分类号： B23F19/10 , B23F21/12
CPC分类号： B23F19/102 , B23F21/126
摘要： A method for simultaneous production of at least two back-tapers on the teeth of a workpiece in the form of a gearwheel using a tool that includes a tool carrier configured in elongated manner, in the manner of a journal, and oriented coaxial to a central longitudinal axis of the tool, and at least two blades, which come into engagement with the tooth to be machined, removing chips during use, wherein the blades are held on the tool carrier at a distance from one another in the longitudinal direction of the tool carrier and a width of the blades extend over a partial length of the tool carrier. The position of at least one of the blades is adjustable in relation to the other blade, so as to balance out deformations of the tool carrier that occur during use.

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