A machine tool chip removal device including a coupling interface to couple with a rotatable spindle of a machine tool to facilitate rotation of the machine tool chip removal device about an axis at a rotational speed. The chip removal device can also include a main fluid channel with an opening to receive pressurized fluid from the machine tool. The chip removal device can further include a first fluid delivery channel and a second fluid delivery channel to direct fluid in different directions. Each fluid delivery channel can be in fluid communication with the main fluid channel. In addition, the chip removal device can include one or more valves associated with the first and second fluid delivery channels to selectively allow fluid passage from the main fluid channel to the fluid delivery channels. The one or more valves can be actuated by varying fluid pressure and/or rotational speed.

A welder guard system is disclosed. According to various embodiments of the concepts and technologies described herein, the welder guard system can include a base and a lid attached to the base. The welder guard system can also include a safety switch system having an actuating device and a sensing device. The actuating device can be attached to the lid of the welder guard system and can provide a wireless signal. The sensing device can cause a welding device to prevent a welding jaw of the welding device from closing in response to activation of a clamping operation of the welding device when the sensing device fails to receive the wireless signal provided by the actuating device.

The present invention relates to an anterior spindle device for use on a machine tool, comprising a clamping interface 12 for clamping the anterior spindle device on a work spindle of the machine tool, an anterior spindle unit 14 with a spindle 14a for driving a drilling tool clamped on the spindle 14a, a drive 15 for exerting a force on the anterior spindle unit 14, and an electromagnetic actuator 16 for exerting a counterbalancing force opposite to the force of the drive 15 on the anterior spindle unit 14.

A suction-extraction adapter for a drilling tool has a housing and a tool connection unit. The housing has a suction-extraction device interface for the detachable connection of a suction-extraction device to the suction-extraction adapter. The tool connection unit enables the axial fixing of the suction-extraction adapter on the drilling tool. The housing also has a locking mechanism. The tool connection unit is configured to be locked on the housing of the suction-extraction adapter via the locking mechanism.

A container assembly for retaining a drill byproduct produced when drilling into a wall, the container assembly includes a container disposed on an internal side of the wall having an internal surface and an external surface. The container assembly also includes a sleeve that is disposed about the external surface of the container, the sleeve includes one or more magnets that couple the sleeve and container to the wall and retain the drill byproduct along the internal surface.

A fastening device for a dust extraction device is configured to detachably connect the dust extraction device to a hand-held power tool. The fastening device includes a first connection unit and a second connection unit. The first connection unit is configured to connect the dust extraction device to the hand-held power tool by form closure. The second connection unit is configured to connect the dust extraction device to the hand-held power tool by force closure.

A dust collecting system includes a power tool and a stationary dust collector. The power tool is configured to perform processing operation on a workpiece by driving a tool accessory. The stationary dust collector is configured to be placed separately from the power tool and to collect dust generated by the processing operation. The power tool includes a first motor and a driving mechanism configured to drive the tool accessory by power of the first motor. The dust collector includes a second motor and a fan configured to be rotationally driven by the second motor to generate air flow for collecting dust. The dust collecting system includes a control device configured to control a rotation speed of the second motor according to a driving state of the power tool.

A power tool includes a housing, a motor positioned substantially within the housing, a drive mechanism supported by the housing and coupled to the motor, a battery pack electrically coupled to the motor, and an isolation system. The isolation system includes an interface member positioned substantially within the housing. The interface member receives a portion of the battery pack to electrically couple the battery pack to the motor. The isolation system also includes a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool.

A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

A rotation device capable of improving safety includes a plurality of screw holes that each extend along the radial direction of a rotation member and each has an opening on a surface of the rotation member; and a stopper for preventing a screw disposed inside the screw hole from protruding to the outside of the opening, without interfering with insertion of a tool, for turning the screw, into the screw hole.