Abstract: A grinding machine tool for reducing hotness of a casing, includes a casing and a drive assembly. The casing is divided into a head and a body; includes casing parts; includes an air inlet provided on the body and an air outlet provided on a side of the head; and forms a motor cover on the head, and the motor cover does not contact the casing parts to form an airflow passage in the casing. The drive assembly includes a circuit board, a motor placed into the motor cover, and an airflow generating member rotating synchronously with the motor. When the airflow generating member rotates, it generates a first heat dissipation airflow passing through the airflow passage and dissipating heat of the circuit board and the head, and a second heat dissipation airflow dissipating heat on a side of the motor facing the airflow generating member.

Abstract: An electric tool grinding machine with static electricity dissipation, the electric tool grinding machine includes a machine tool body, a motor disposed in the machine tool body, a power supply unit disposed in the machine tool body and connected to the motor, a grinding disc rotating with the motor, and a dust collecting element facing the grinding disc and assembled with the machine tool body. The power supply unit includes a power ground wire. The machine tool body includes a charge conducting element contacting the dust collecting element, and the charge conducting element is electrically connected to the power ground wire by one of the following: direct connection and indirect connection, when an electrostatic charge is generated on the dust collecting element, the charge conducting element conducts the electrostatic charge to the power ground wire.

Abstract: An electric tool grinding machine has an electric motor, a grip body, a cover connected to the body, an eccentric block in the cover and driven by the motor, and an airflow generating member attaching on the block. The body has at least one air hole having a first distance relative to an axis of the motor, the cover doesn't have a through hole, the airflow generating member has a bottom plate and a plurality of fan blades, a second distance is between a top edge of the blade and the body, a third distance is between an outer edge of the blade and the cover, the second distance is at least 50% of a longitudinal length of the blade, the third distance is at least 50% of a radial length of the blade, and an outer diameter of the airflow generating member is greater than the first distance.

Abstract: An electric tool grinding machine includes an electric motor, an airflow generating member, and a casing. The casing includes a hollow shell, a motor housing located in the hollow shell, two partitioning plates located between a side wall of the motor housing and the hollow shell, at least one air outlet facing the airflow generating member, a first air inlet formed on the hollow shell, and at least one second air inlet formed on the hollow shell and spaced apart from the first air inlet. When the airflow generating member is activated, the first air inlet generates a pressure difference in the hollow shell near an air inlet portion of the motor housing to cause air to be drawn into the second air inlet.

Abstract: A grinding machine tool comprises a housing, a driving assembly disposed in the housing, a grinding disc driven by the driving assembly, and having a grinding surface and a non-grinding surface, a switch driving the driving assembly, and a pressing plate disposed on the housing and having a first state in which the switch drives the driving assembly to drive the grinding disc when the pressing plate is operated, and a second state in which the switch stops driving the driving assembly when the pressing plate is not operated. The grinding machine tool has a grinding disc braking structure detached from the non-grinding surface when the pressing plate is in the first state; when the pressing plate is in the second state, the grinding disc braking structure moves toward the non-grinding surface and contacts with the grinding disc to stop the grinding disc from rotating.

Abstract: A sanding disc stabilizing structure of an orbital sander comprises a casing, a sanding power source, a sanding disc, and at least four springs. The sanding power source is assembled on the casing and comprises a drive shaft and a tool holder disposed on the drive shaft and offset from an axis of the drive shaft. The center of the sanding disc driven by the sanding power source to perform an orbital motion is disposed on the tool holder with a locking screw. Two ends of each of the at least four springs are respectively disposed on the casing and the sanding disc. The free length of each of at least four springs is greater than the spacing between an installation part of the casing and an installation part of the sanding disc provided for one of the at least four springs.

Abstract: A power supply structure of an electric grinding tool machine comprises a power management module, a power connecting wire and a battery socket, wherein the power management module is arranged on a main body of the electric grinding tool machine, the power connecting wire is electrically connected with the power management module and extends outside the main body of the electric grinding tool machine, and the battery socket is connected with the power connecting wire and can be randomly changed in position on the basis of the power connecting wire, the battery socket being used for a replaceable battery which is selectively arranged on the battery socket, and the battery socket being provided with a guide chute formed corresponding to a boss on the replaceable battery in shape and at least two conductive terminals arranged in the guide chute.

Abstract: A grinding machine tool with random eccentric orbital motion speed detection, the grinding machine tool comprises a body and a grinding disc, the body comprises a driving shaft and a tool holder connecting the grinding disc and having an eccentric distance relative to the driving shaft, and the grinding disc performs grinding in a random eccentric orbital motion when the driving shaft rotates. The grinding disc comprises at least one detected member on a side of the grinding disc facing the body for detecting a speed of the random eccentric orbital motion, and the at least one detected member defines a detection area with a range greater than or equal to twice the eccentric distance. Thereby, an accurate speed of the grinding disc performing the random eccentric orbital motion is obtained, so that the grinding operation of precision grinding which is gradually performed by automation is more precisely controlled.

Abstract: A grinding package fitted on robotic arm includes a main body, a pneumatic motor, a bridging part and a grinding tool. The main body is formed with a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall within the first space, an intake channel, an exhaust channel, openings of the first space and the second space respectively located on each of two parallel sides of the main body, the connecting wall having a ventilation hole. The pneumatic motor includes a motor body within the first space, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole. The bridging part is combined with the main body and the robotic arm, the bridging part closing off the first space, the grinding tool facing the second space and being joined to the transmission shaft.

Abstract: An exhaust motor of vacuum device comprises an electric motor comprising a motor casing and a drive shaft, and an air bucket connected to the electric motor. The air bucket defines an air inlet side and an air outlet side, at least one rotating fan driven by the drive shaft to generate a high-pressure airflow flowing from the air inlet side to the air outlet side is provided in the air bucket. The air bucket is provided with a diversion end plate forming a plurality of diversion passages, each of the diversion passages comprises an inlet and an outlet, and the inlet is located on an original output path of the high-pressure airflow. The diversion passages divert the high-pressure airflow to flow toward the motor casing, and turn the high-pressure airflow into a heat-dissipating airflow capable of exchanging heat with the motor casing.

Abstract: A working trolley with built-in dust suction system includes a dust suction system and a trolley. Through directly assembling the dust suction system with the trolley, useless structures in the dust suction system is eliminated, so that the dust suction system can be assembled with the trolley with a more simplified structure. Through directly assembling the dust suction system with the trolley, the trolley breaks the old and stereotyped way of using, and the trolley is no longer just a carrying tool of a vacuum cleaner, thereby greatly increasing the effectiveness of usage of the trolley. On the other hand, the present invention enables a dust storage bucket of the dust suction system to have a feature of being independently dismountable, so that an operator does not need to dismount other components when replacing the dust storage bucket, thereby facilitating operation for the operator.

Abstract: A dust suction system comprises a cyclonic dust filter component, a dust collection bucket and a load bearing frame. The dust collection bucket comprises an assembly rib, the load bearing frame comprises a frame and a support plate disposed on the frame, and the support plate comprises a through hole disposed corresponding to a dust exhausting port, and at least two assembly jaws located at two opposite sides of the through hole. Each of the assembly jaws comprises a connecting section, an extending section connecting the connecting section, and a limiting section connecting the extending section. The limiting section comprises a limiting protrusion disposed towards a direction of the through hole. When the two assembly jaws are not forced, movement of the assembly rib is restricted by the limiting section, so that the dust collection bucket is fixed on the frame.

Abstract: A cyclonic dust filter device comprises a trunk, at least one first retaining wall, and at least one second retaining wall. The trunk comprises a channel, an air inlet end and an air outlet end disposed at two ends of the channel, and a dust filter hole communicating with the channel. The first and second retaining walls are respectively disposed correspondingly to the dust filter hole. When a dust-containing airflow to-be-filtered enters the channel from the air inlet end, the dust-containing airflow forms a centrifugal airflow that contains the dust and is thrown out of the channel at a position of the dust filter hole. The first and second retaining walls are respectively disposed on a traveling path of the centrifugal airflow, so that the centrifugal airflow sequentially strikes the first and second retaining walls to change the traveling direction and then discharges dust free clean air.

Abstract: A grinding package fitted on robotic arm includes a main body, a pneumatic motor, a bridging part and a grinding tool. The main body is formed with a first space, a second space, a communicating hole communicating the first space to the second space, a connecting wall within the first space, an intake channel, an exhaust channel, openings of the first space and the second space respectively located on each of two parallel sides of the main body, the connecting wall having a ventilation hole. The pneumatic motor includes a motor body within the first space, and a transmission shaft connected to the motor body while extended from the second space through the communicating hole. The bridging part is combined with the main body and the robotic arm, the bridging part closing off the first space, the grinding tool facing the second space and being joined to the transmission shaft.

Abstract: A multi-cyclonic dust filter device comprises a dust collection chamber for collecting dust, a cyclonic chamber providing a gas to-be-filtered out dust to enter and forming a first cyclone to enter into the dust collection chamber, and a deflector component disposed between the dust collection chamber and the cyclonic chamber; the deflector component comprises a first deflector tube for receiving the gas to-be-filtered out dust refluxed from the dust collection chamber and forming a second cyclone, and a second deflector tube disposed in a same axial direction as the first deflector tube and separately disposed by an airflow convergence interval, the first deflector tube is provided with at least one dust filter hole for discharging the dust in the second cyclone, and the second deflector tube combines the first cyclone and the second cyclone through the airflow convergence interval to form a third cyclone for discharging.

Abstract: A grinding machine for grinding non-horizontal grinding surfaces comprises a deformation device which is disposed between a grinding power source and a grinding pad driven by the grinding power source. The deformation device includes a set of an offset unit and the deformation members disposed near one end of the grinding pad, wherein the offset units, the first deformation member and the second deformation member define deformation angles. Therefore, one end of the grinding pad is correspondingly fitted to various non-horizontal grinding surfaces independently through the variable angles of the deformation angle, especially for continuous irregular non-horizontal grinding surfaces. Thus, the present invention has excellent grinding effectiveness.

Abstract: A dust collecting device using multi-cyclone dust filtration includes a dust collecting chamber, cyclone chamber and airflow guiding component. The dust collecting chamber communicates with the cyclone chamber having an intake port for a gas to be filtered, an annular side wall connected to intake port and guiding gas to be filtered to form a first cyclone, an engaging port communicated with dust collecting chamber and allowing first cyclone to enter dust collecting chamber, and an exhaust port. The airflow guiding component within cyclone chamber is provided with a return flow tube receiving the returned gas to be filtered and forming a second cyclone, an airflow guiding bonnet separated from return flow tube, and a dust filtration channel between airflow guiding bonnet and return flow tube. The second cyclone flows toward the exhaust port, and enables dust therein to enter cyclone chamber again, as passing by dust filtration channel.

Abstract: A grinding machine includes a grinding machine body and a grinding disc connected to the grinding machine body. The grinding machine body is provided with a pressure cavity at a position facing the grinding disc and a gas intake pipe corresponding to the pressure cavity. A pressure release gap in communication with the pressure cavity is formed between the grinding machine body and the grinding disc. The gas intake pipe induces a high-pressure gas into the pressure cavity, which receives an effect of the high-pressure gas to become a positive-pressure environment. The high-pressure gas is continually released via the pressure release gap to prohibit external dust from entering the pressure cavity. Thus, the grinding machine is capable of preventing dust from accumulating in the pressure cavity as well as effectively preventing moisture from entering the pressure cavity when the grinding machine is applied for wet grinding.

Abstract: A blade fastening device is provided with a hollow clamping member including an axial channel for disposing a portion of a blade therein, and at least one slit formed on a peripheral surface so that the hollow clamping member is configured to be flexibly compressible; and a cylindrical extension formed with a first end of the hollow clamping member. The blade fastening device is capable of preventing cutting fluid from leaking, guiding cutting fluid to a cutting site, and fastening a blade so that a deflection of the blade is made impossible.

Abstract: A power-driving motor for power-driving bike is provided, of which the length is obviously larger than its width. A rotor of the power-driving motor is provided at the outside of the stator so as to make the distance from the rotor to the motor spindle increase; namely, a torque increases and then an arm increases, thereby, making the motor spindle supply a higher output torque to the connected driving unit when the rotor rotates. The motor, based on the length of a conventional power-driving motor, may supply a higher output torque to solve the defect of a conventional motor implemented with an inner rotor of which the output torque is insufficient.