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.

Power tool methods and systems are provided for aligning a power tool to implement an angled cut in a workpiece. The power tool includes a first distance sensor and a second distance sensor. The power tool measures a first distance to the workpiece with the first distance sensor and a second distance to the workpiece with the second distance sensor. The power tool calculates an angle between the power tool and the workpiece based on the first and second distances, and indicates the angle via an angle output indicator of the power tool. The power tool may measure an angle between the power tool and the workpiece using a proximate edge and a distal edge of the workpiece, and indicate whether the power tool maintains a correct angle as it traverses a cut through the workpiece from the proximate edge to the distal edge.

The invention relates to a sawing device for forming saw-cuts into a semiconductor product, including: a carrier for holding the semiconductor product, a saw blade, a first position sensor for determining the position of the semiconductor product held by the carrier, a second position sensor for determining the position of the saw blade, and a control unit configured for controlling the relative movement of the saw blade and the carrier, wherein the sawing device further includes a reference for linking the position of the first position sensor to the position of the second position sensor, wherein the control unit is configured to process, with aid of the reference, the positions determined by the reference sensors into a position of the point on the free surface of the semiconductor product relative to the point on the cutting edge of the saw blade, and, based on this positional information, control the relative movement of the saw blade and the carrier. The invention further relates to a method for forming saw-cuts into a semiconductor product.

Embodiments of the innovation relate to a blade angle adjustment assembly, comprising a blade angle adjustment mechanism; a tooth load indicator; and a blade angle controller disposed in electrical communication with the blade angle adjustment mechanism and with the tooth load indicator. The blade angle controller is configured to receive a tooth load indication signal from the tooth load indicator and, the tooth load indication signal, provide a drive signal to the blade angle adjustment mechanism to adjust an angular positon of a bandsaw blade within a cut plane of a workpiece.

A method of mounting a capacitive coupling plate to a power tool assembly including a drop arm assembly, an actuating device configured to transfer a force to the drop arm assembly, and a control system configured to control the actuating device includes connecting a capacitive coupling plate bracket formed from a non-conductive material to a drop arm frame of the drop arm assembly, and mounting the capacitive coupling plate to the capacitive coupling plate bracket.

A level apparatus for chainsaws is provided. The level apparatus can be adhered to pre-existing chainsaws for indicating when a user is keeping the chainsaw level through a cut. The level apparatus may include a transparent vial defined by a curved portion and a planar portion engaging the curved portion at least along its periphery so that a fluid be may encased between the curved and planar portion. The fluid may accommodate a bubble so that when the vial is in a level state the bubble occupies the center of the curved portion, and wherein a non-level state the bubble slides along the curved portion accordingly, thereby indicating to the user that the level apparatus is not level.

A power tool assembly includes a drop arm assembly rotatably supporting an arbor shaft and movable between a first drop arm position and a second drop arm position, an actuating device configured to transfer a force to the drop arm assembly when the drop arm assembly is at the first drop arm assembly position, a control system configured to control the actuating device to transfer the force to the drop arm assembly when an unsafe condition is sensed, a motor operably connected to the arbor shaft through a gear, and a gear housing which houses the gear, the gear housing formed from a non-conductive material.

Embodiments of this disclosure provide a system and method for cutting composite materials. The system includes a material supporting surface, an oscillating saw suspended from a rotatable head on an arm, a two-axis gimbal coupled to the rotatable head for adjusting a cutting angle of the oscillating saw, and a material clamp for clasping the composite material to prevent the composite material from slipping while being cut with the oscillating saw. An automated embodiment of the system further includes a controller for instructing the oscillating saw to cut the composite material by guiding the saw via coordinated movement of the rotatable head, the arm, and the gimbal. A method of cutting a woven composite material includes feeding the material on a support surface, providing an oscillating saw blade on a guiding mechanism, and cutting the material by moving the saw blade in a direction based on the guiding mechanism.

A pressing member is rotatably supported by a fixing screw shaft via a ball bearing. The pressing member is made of synthetic resin and is larger in diameter compared to that of the fixing screw shaft. A connection bar is pressed by the pressing member by fastening the fixing screw shaft, and the position of the connection bar is thereby fixed. Because the pressing member has a large diameter, a dent is not generated on the connection bar. Furthermore, because the pressing member is not rotated in the fixed position, the position of the connection bar is not offset, enhancing the ability of fixing the connection bar with precise adjustment.

The present invention relates to a power tool and a method for controlling a stopping position of a cutting element in the power tool, the power tool including a cutting element, a sensor arranged to detect a position of the cutting element, and a controller operably connected with the sensor and the drive mechanism, for controlling a stopping position of the cutting element based on the detection by the sensor. When changing the cutting element, it is desirable to stop the cutting element at a higher position away from the object being cut, ideally the highest position. By utilizing a sensor to detect a sensed object in the cutting element, this method of control is automatic and reliable, allowing the user to change the cutting element easily and efficiently.