-
公开(公告)号：US10821589B2
公开(公告)日：2020-11-03
申请号：US16061377
申请日：2016-12-06
摘要： A percussion mechanism contains a guide tube, an exciter piston, a hammer, a pneumatic chamber for coupling the hammer to the motion of the exciter piston, a striker, and a seat for the striker. The hammer has a striking point, defined by a striking surface of the striker when the striker lies against the seat. A check valve has an outlet opening and a closing mechanism for closing the check valve against an air flow from the interior of the guide tube. The outlet opening is arranged in such a way that the outlet opening is closed by the hammer during striking operation and otherwise is open.
-
公开(公告)号：US20130277077A1
公开(公告)日：2013-10-24
申请号：US13865729
申请日：2013-04-18
发明人： Markus Hartmann , Eduard Pfeiffer
CPC分类号： B25D17/245 , B25D9/06 , B25D17/06 , B25D17/24 , B25D2211/068 , B25D2217/0019 , B25D2217/0023 , B25D2250/185 , B25D2250/345
摘要： A hand-held machine tool includes a tool accept for mounting a chiseling tool on an operating axis. A pneumatic hammer mechanism includes a hammer mobile on an operating axis, an exciter, and a pneumatic chamber sealed by an exciter and the hammer, which couples the movement of the exciter to the hammer. The exciter is driven by a motor and moves back and forth between a frontal dead point distant from the tool and a dead point near the tool. A damper device includes a supercharger and a controlled outlet valve. The controlled outlet valve allows air to flow from the supercharger into the pneumatic chamber when the exciter is in the proximity of the dead point distant from the tool.
摘要翻译： 手持式机床包括用于在操作轴上安装凿子工具的工具。 气动锤机构包括在操作轴上移动的锤，激励器和由激励器和锤密封的气动室，其将激励器的运动耦合到锤。 励磁机由电动机驱动，并在远离工具的正面死点和工具附近的死点之间来回移动。 阻尼器装置包括增压器和受控出口阀。 当激励器处于远离工具的死点附近时，受控的出口阀允许空气从增压器流入气动室。
-
公开(公告)号：US11850716B2
公开(公告)日：2023-12-26
申请号：US16626184
申请日：2018-06-19
IPC分类号： B25D17/02
CPC分类号： B25D17/02 , B25D2217/0003 , B25D2217/0057 , B25D2222/72
摘要： A drill bit for chiselling rock includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has a cutting edge, an intake opening, and an intake passage and where the intake passage connects the intake opening to the delivery passage. A first portion of the intake passage which adjoins the intake opening has a first inclination with respect to a drill bit axis, a second portion of the intake passage which adjoins the hollow shank has a second inclination with respect to the drill bit axis, and the second inclination is greater than the first inclination.
-
公开(公告)号：US11691204B2
公开(公告)日：2023-07-04
申请号：US16626257
申请日：2018-06-20
CPC分类号： B23B51/02 , B25D17/02 , B25D17/20 , B28D1/146 , B28D1/26 , E21B10/36 , B23B2222/28 , B23B2226/75 , B23B2251/68 , B25D2217/0003 , B25D2222/51
摘要： A drill bit for chiseling stone includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a cutting edge, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. A cross section of the intake passage increases from the intake opening to the delivery passage.
-
公开(公告)号：US11123855B2
公开(公告)日：2021-09-21
申请号：US16341389
申请日：2017-10-12
发明人： Markus Hartmann , Klaus-Peter Bohn , Bastian Pluemacher , Michael Brunner , Helene Wesseler , Carsten Peters
摘要： A control method for a borehole flushing module (2) for a chiseling tool (5), includes the steps: Providing fine-grain particles in a dispenser (31); ascertaining a material (M) at a location processed by the tool (5) with the aid of a material detector (37); and introducing fine-grain particles at the location of the substrate processed by the tool (5) when the material detector (37) ascertains an iron-containing material (M2).
-
公开(公告)号：US10906166B2
公开(公告)日：2021-02-02
申请号：US16061990
申请日：2016-12-06
发明人： Carsten Peters , Helene Wesseler , Markus Hartmann , Klaus-Peter Bohn , Thilo Hammers , Bastian Pluemacher
摘要： A control method for a bore-chiseling portable power tool for machining a substrate by a drill bit includes superimposing a periodic striking on the drill bit at an impact rate and a rotating of the tool holder at a rotational speed in a rotational direction, identifying a material of the substrate being machined by the drill bit by a sensor, adjusting the rotational speed and/or the rotational direction to a first rotational speed and a first rotational direction when the identified material is an iron-based material, and adjusting the rotational speed and/or the rotational direction to a second rotational speed and a second rotational direction when the identified material is a mineral material. The first rotational speed is less than the second rotational speed and the first rotational direction is counter-clockwise and the second rotational direction is clockwise.
-
公开(公告)号：US09597788B2
公开(公告)日：2017-03-21
申请号：US13766087
申请日：2013-02-13
CPC分类号： B25D16/006 , B25D2216/0015 , B25D2216/0023 , B25D2216/0038 , B25D2216/0069 , B25D2250/255 , B25D2250/371 , B25F5/001
摘要： A handheld power tool has a switchable gear component actuatable by a selector switch. The gear component moves from a first operating position into a second operating position. The selector switch has a first switching position associated with the first operating position and a second switching position associated with the second operating position, and movable so that intermediate positions are assumed. A traveling coupling between the selector switch and the gear component has a spring exerting force onto the gear component in the first direction. A locking bolt is coupled to the selector switch in a positively driven manner. In the intermediate positions, the locking bolt is moved into a blocking bolt position blocking movement of the gear component out of the first operating position into the second operating position. When the selector switch is in the second switching position, the locking bolt is in a releasing bolt position.
-
公开(公告)号：US20130284473A1
公开(公告)日：2013-10-31
申请号：US13865747
申请日：2013-04-18
发明人： Markus Hartmann , Eduard Pfeiffer
IPC分类号： B25D17/24
CPC分类号： B25D17/245 , B25D11/125 , B25D2211/068 , B25D2250/195 , B25D2250/221
摘要： A hand-held machine tool includes a tool accept for mounting a chiseling tool on an operating axis. A pneumatic hammer mechanism includes an exciter, driven back and forth by a motor about a stroke between a dead point distant from the tool and a dead point near the tool, a hammer moved back and forth on the operating axis between a reversal point distant from the tool and a point of impact, and a pneumatic chamber sealed by the exciter and the hammer, which couples the movement of the hammer to the movement of the exciter. A damping device increases the pressure in the pneumatic chamber when the exciter during its motion in the direction to the dead point distant from the tool has approached to less than half the stroke to the dead point distant from the tool.
摘要翻译： 手持式机床包括用于在操作轴上安装凿子工具的工具。 气动锤机构包括一个激励器，由马达围绕在远离工具的死点与工具附近的死点之间的行程来回驱动，锤在操作轴上来回移动， 工具和冲击点，以及由激励器和锤子密封的气动室，其将锤的运动耦合到激励器的运动。 当激励器在其远离工具的死点的方向运动时，减震装置增加了气动室中的压力，其距离工具远离死点的行程的不到一半。
-
公开(公告)号：US20210001463A1
公开(公告)日：2021-01-07
申请号：US17026744
申请日：2020-09-21
发明人： Frank Kohlschmied , Markus Hartmann
摘要： A handheld power tool 1 has a tool socket 2 to hold a tool along a working axis 11. A motor-driven, pneumatic striking mechanism 6 has an exciter 17 which is driven by a motor 5, a striker 14 that is coupled to the exciter 17 via a pneumatic chamber 19, and an intermediate striker 22 arranged on the working axis 11 in the striking direction 12 behind the striker 14. A ventilation opening 30 connects a cavity 29 situated between the striker 14 and the intermediate striker 22 to the environment. A valve 38 that closes the ventilation opening 30 is opened when actuated by the intermediate striker 22 when the intermediate striker 22 is moved into its working position counter to the striking direction 12.
-
公开(公告)号：US10391621B2
公开(公告)日：2019-08-27
申请号：US15105199
申请日：2014-12-09
摘要： The handheld power tool has a tool receptacle for accommodating a tool on a working axis (11) and an electric motor (5). A pneumatic percussion mechanism (6) has an exciter, which is moved back-and-forth by the motor (5) periodically in parallel to the working axis (11), a striker (14), which is movable on the working axis (11) and is coupled via a pneumatic spring (18) to the exciter, and an anvil (19), which is situated movably on the working axis (11) and is situated downstream from the striker (14) in the percussion direction (12). The anvil (19) has a cylindrical anvil section (22) having a diameter and multiple channels (30) extending over the entire length (31) of the anvil section (22). A cross-sectional area of the anvil section (22) is at most 5% less than a circular area defined by the diameter.
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.014 秒)
