A collar system for a dust extractor is provided including: a collar including a drill passage extending through the collar and an extension forming an internal passage that connects at one end with the drill passage, the extension being attachable to a housing of the dust extractor to enable the internal passage to connect to a suction passage of the dust extractor; and a cover mounted adjacent an entrance of the drill passage, the cover being moveable between a first position where it covers the entrance and a second position where is remote from the entrance, wherein the cover comprises at least hole that passes through the cover.

An engraving device includes a material processing platform disposed on a base frame and including suction holes and a pneumatic joint communicating with the suction holes; a gantry bracket disposed across both sides of the base frame; a spindle motor disposed on the gantry bracket; a processing bit operatively connected to the spindle motor; a dust collector disposed on the processing bit; and a driving mechanism operatively connected to the spindle motor and configured to move along the X-axis, Y-axis, and Z-axis.

A suction device for a handheld power tool that is adapted to be driven in oscillation and that is equipped with a gearbox extension housing for mounting of the suction device. The suction device having a body mounted on the gearbox extension housing of the handheld power tool via a mounting section and an air duct formed in the body, the air duct being delimited at one end by an air inlet and at an other end by an air outlet on which a suction apparatus or a dust exhauster is adapted to be detachably mounted. The mounting section of the body is formed essentially as a hollow cylinder and extends between a first plane and a second plane, which are substantially parallel.

A removing apparatus includes a table, multiple chucks, a nozzle and a table cover. The table is horizontally provided and configured to be rotated around a vertical rotation center line. The multiple chucks are disposed at a distance therebetween around the rotation center line of the table. The nozzle is configured to supply a processing liquid to a substrate held by the chuck. The table cover is configured to receive the processing liquid from above the table. The table cover has an inclined member of a conical shape having a decreasing height as the inclined member goes away from the rotation center line of the table while having a constant height in a rotation direction.

A dust collector operable to collect dust and debris generated during operation of a power tool includes a mounting base configured to couple to the power tool. The mounting base defines a longitudinal axis. The dust collector also includes a shroud extending from the mounting base. The shroud includes a first end adjacent the mounting base, a second end operable to contact a workpiece, a sleeve extending between the first end and the second end, and a spring biasing the second end away from the first end. The second end is movable relative to the first end against the spring.

A vacuum cleaner to suction dust generated by a machine tool, wherein the vacuum cleaner is actuatable by an electric device in the shape of the machine tool or an energy storage module for the electric power supply of the machine tool, which has a drive motor to drive a tool holder on which a tool provided to process a workpiece is arranged or is arrangeable, wherein the vacuum cleaner has a vacuum housing with a dirt collection chamber to receive dirt separated from a suction flow and a suction unit to generate the suction flow, wherein a suction inlet is present on the vacuum housing to connect a suction hose to establish a current connection for the suction flow with the machine tool, wherein the vacuum cleaner has an external communication apparatus for a wireless control connection to a wireless communication interface of the electric device and to receive at least one control command to control, the vacuum cleaner via the control connection.

A technique for preventing a coolant from adhering to a discharge inhibited portion is provided. A machine tool capable of machining a workpiece includes: a first discharge unit that discharges the coolant removing a chip of the workpiece; a portion inside the machine tool and to which the coolant should not be discharged; a first drive unit that changes a relative position between the first discharge unit and the portion; and a control unit that controls the machine tool. The control unit performs processing for recognizing a position in the machine tool of a moving object by the first drive unit between the first discharge unit and the portion, and processing for controlling the discharge of the coolant by the first discharge unit such that the coolant is not discharged to the portion based on the position recognized in the recognition processing.

An actuator control device that controls an actuator according to an angle of a rotating portion includes a processor configured to: calculate a target relative angle from a rotation start angle to a target angle; detect a sensor detection angle from a sensor; calculate an angular velocity of the rotating portion based on a change amount of the sensor detection angle in a predetermined calculation cycle; correct the angular velocity to be closer to a normal angular velocity when the angular velocity is greater than or equal to a first threshold or less than or equal to a second threshold; calculate an actual relative angle by integrating the angular velocity and a corrected angular velocity; and feedback-control the actuator according to a deviation between a target relative angle and the actual relative angle.

Embodiments of the present application provide a waste collecting device, which relates to the technical field of lithium cell manufacturing. The waste collecting device includes a frame, a waste buffer box, a negative pressure flow-equalizing box and a waste collecting box. The waste buffer box is arranged in an upper part of the frame and the waste buffer box is provided with a waste pipeline. The negative pressure flow-equalizing box is arranged on the top of the waste buffer box, the negative pressure flow-equalizing box is communicated with the waste buffer box, and the negative pressure flow-equalizing box is provided with a negative pressure pipeline. The waste collecting box is movably arranged in the lower part of the frame and is selectively communicated with the waste buffer box.

A machine tool for machining a workpiece clamped in the working space of the machine tool by means of a tool. The machine tool includes a machine bed, which has a chip collection region having at least one conveying channel open on the working space side for collecting chips that drop during the machining of the workpiece, and a conveying device for leading away chips that have dropped into the chip collection region in the at least one conveying channel. The conveying device has a stationary supporting shaft, which extends in the at least one conveying channel in the longitudinal direction of the conveying channel, wherein a spiral element is rotatably supported on the stationary supporting shaft, and wherein the conveying device also comprises a drive for driving the rotational motion of the spiral element about the stationary supporting shaft.