A miter saw that includes a base, a worktable arranged on the base and defining a worktable plane, and a cutting head formed with or connected to an operating member operable by a user. The cutting head further includes a circular saw blade operative to rotate around a first axis and a motor operative to drive the circular saw blade. A fence is arranged on the worktable. The cutting head is further connected to a first guiding member configured for guiding chips to be discharged. The fence is formed with a guiding portion. The cutting head is operative to rotate around a second axis parallel to the worktable plane and, when the cutting head rotates around the second axis, the guiding portion is operative to guide the first guiding member to cross the fence.

A cutting machine reduces cost increase associated with production equipment and has design flexibility for different types of batteries. A cutting machine for cutting a workpiece includes a cutting machine body including a cutting blade, a motor that drives the cutting blade, and a motor housing accommodating the motor, and an adapter including a body holder attached to the cutting machine body and a battery holder in which a battery to power the motor is installable.

Two 18V-type rechargeable batteries (31 and 31) are attached in series so as to allow a 36V-type tabletop cutting device (C1) to be utilized. By utilizing the 18V batteries which are highly prevalent for electric tools, it is possible to use the 36V-type tabletop cutting device (C1) as well as to reduce costs for the batteries.

Power tools with sensor arrays and methods of operating power tools are disclosed herein. In addition to the sensor arrays, the power tools include an implement holder, a motor, a workpiece support, and a controller. The implement holder is configured to hold an implement. The motor is configured to receive an electric current and to actuate the implement holder to move the implement. The workpiece support includes a support surface configured to support the workpiece and is configured to maintain an at least substantially fixed orientation relative to the workpiece while the implement performs an operation on the workpiece. The sensor array is configured to detect physical contact between the workpiece support and the workpiece and to generate a sensor output. The controller is programmed to receive the sensor output and to control the operation of the power tool based, at least in part, on the sensor output.

A workpiece limiting device for power tools includes a support arm adapted to contact with a workpiece and limit the workpiece, and a body. The support arm is supported by the body and movable relative to the latter. The workpiece limiting device further includes a quick-release device. The quick-release device allows manual adjustment of the position of the support arm relative to the body and locks this position without using an external tool. Through the workpiece limiting device, the adjustment range of the position of the support arm relative to the power tool can be greatly expanded, and workpieces in different sizes can be processed.

Systems and methods are provided for an electric tool (e.g., a power tool) that includes an output driver for receiving an accessory, and an accessory-type detector. A motor of the electric tool is coupled to the output driver for driving the accessory. The power tool also includes an operation trigger for activating the motor and a motor controller. The motor controller includes an electronic processor that is coupled to the accessory-type detector, the motor, the operation trigger, and a memory. The memory stores instructions that when executed by the electronic processor cause the motor controller to detect a characteristic of the accessory from output of the accessory-type detector. The motor controller determines an operational characteristic for the accessory based on the detected characteristic, and controls operation of the motor to drive the accessory according to the operational characteristic when the operation trigger is activated.

A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a motor for driving a saw blade about a rotational axis, a handle, a trigger coupled to the handle and moveable between a first position in which the motor is deactivated, and a second position in which the motor is activated to drive the saw blade, and a trigger lock pivotably coupled to the trigger for movement therewith to prevent movement of the trigger from the first position to the second position.

A cutting machine can include a cutting machine body that is movably supported above a table and capable of vertical movement, the cutting machine body can be positioned at an upward waiting position and a lower end position. The cutting machine body can include an auxiliary cover positioned around a portion of a blade and including a projection. When in the upward waiting position the auxiliary cover is not able to move upward because of the position of the projection, and in the lower end position the auxiliary cover is able to move upward.

A modular circular saw includes a base, a worktable disposed on the base and a workpiece supporting unit. The workpiece supporting unit has two supporting frames respectively and correspondingly located on two lateral sides of the worktable; each workpiece supporting unit has a supporting shaft and two corresponding extending shafts. Each extending shaft has one end pivotally connected to the base, another end of the extending shaft is pivotally connected to one end of the supporting shaft, correspondingly. When the workpiece supporting unit is in an extended position for receiving a workpiece, the two supporting shafts are substantially co-planar with the worktable, such that the two supporting shafts provides extra support to a workpiece of large size. When the workpiece supporting unit is in a folded position, the two supporting shafts are located above the worktable for minimizing the size of the saw and for allowing the user to grip the saw for easy transportation.