A drill guide device comprising a speed detection device for measuring speed of a drill bit used by the device for drilling an object surface during a hand drilling operation; a force detection device for measuring force applied by the drill bit on the object during the hand drilling operation; an alignment detection device for detecting alignment of the drill bit with respect to the object surface during the hand drilling operation; a user interface connected to the speed detection device, the force detection device and the alignment detection device adapted to communicate to a user information related to the speed, the force and the alignment of the drill bit during the hand drilling operation. The drill guide device is preferably used for training technicians on hand drilling the object surface using a required range of force, speed and alignment, particularly muscle memory training of technicians on these required parameters.

Apparatus, methods, and other embodiments associated with a key duplication machine are described. In one embodiment, an assembly for duplicating a master key includes an optical imaging device, a logic, a clamping assembly, and a cutting member. The optical imaging device is capable of capturing an optical image of at least a portion of the master key. The logic is capable of determining a key pattern of the master key from the optical image of the master key. The clamping assembly is capable of clamping a key blank and the cutting member is capable of cutting a key pattern into said key blank.

An automated cross slide system having a cross slide with a back plate, a front plate and a saddle. The back plate can have a pair of end caps, a pair of linear guides, a first ball screw, a first gear box, a first servo motor, a first drive, and a first manual feed knob and the front plate can have a pair of end caps, a pair of linear guides, a second ball screw, a second gear box, a second servo motor, a second drive, and a second manual feed knob. The system can have a power supply, a communications hub with a processor and data storage connected to a network. The system can have a library of specification profiles and a human machine interface for accessing the library and controlling the first and second drives to cut a target piece in accordance with a selected specification profile.

Various embodiments of power tool and method of operating same are described. The power tool may include a first position sensor, a second position sensor, a third position sensor, and a controller. The first, second, and third position sensors may each generate a signal indicative of a distance between the respective position sensor and a workpiece. The controller may determine one or more angles of the power tool with respect to the workpiece based on the first, second, and third signal and present an indication as to whether the one or more angles are within a predetermined range. The controller may further obtain a depth measurement based on the first signal, the second signal, and the third signal and generate, based on the obtained depth measurement, one or more control signals that control operation of the power tool.

A magnetic drill is provided with an alternate power source. The drill is comprises of: an electric motor for driving a tool; a controller configured to receive an AC input signal and operable to control a drive signal to the electric motor; an electromagnet arranged in a base of the drill housing and operable, in response to a DC voltage, to magnetically couple the base to a surface proximate to the base; an AC/DC converter configured to receive the AC input signal and operates, independent from the controller and in the presence of the AC input signal, to output a DC voltage to the electromagnet; and an alternate power source circuit that monitors the DC voltage output by the converter and, in the absence thereof, provides an alternate DC voltage to the electromagnet.

A method and apparatus for center height alignment of a boring bar is disclosed. The apparatus includes a seat member with a bottom and a back, and a digital angle gauge mounted to the seat member. The method includes the steps of: assembling an apparatus comprising a seat member and a digital angle gauge; calibrating the apparatus such that a Display of the digital angle gauge reads zero degrees; and aligning the center height of the boring bar by rotating the boring bar such that the Display of the digital angle gauge reads zero degrees when the apparatus is mounted onto the boring bar.

A portable drilling machine wherein when a shorting failure occurs in a circuit part connected to a driving motor, this state is reliably detected and a false start of the motor is reliably prevented. A diving motor control circuit in the portable drilling machine includes a main control section; a triac and a relay which are connected to power supply terminals in series with the driving motor; peripheral circuits (a triac control circuit, a relay control circuit, a triac inspection and determination section, a bypass resistor, etc.) which are related to the triac and relay; and a current measurement section for measuring current flowing in the driving motor.

A closed-loop machining system that includes a rotating spindle assembly having a body, a tool holder connected to the body, an ultrasonic machining module connected to the tool holder, and a power supply for powering the module; a processor for controlling the operation of the closed-loop machining system; a safety and compatibility bridge linking the ultrasonic machining module to the processor, wherein the safety and compatibility bridge further includes an electrical connection between the ultrasonic machining module and the processor; and at least one microprocessor located in or associated with the ultrasonic machining module for enabling and processing communication between the ultrasonic machining module and the processor.

A magnetic drill is provided with an alternate power source. The drill is comprises of: an electric motor for driving a tool; a controller configured to receive an AC input signal and operable to control a drive signal to the electric motor; an electromagnet arranged in a base of the drill housing and operable, in response to a DC voltage, to magnetically couple the base to a surface proximate to the base; an AC/DC converter configured to receive the AC input signal and operates, independent from the controller and in the presence of the AC input signal, to output a DC voltage to the electromagnet; and an alternate power source circuit that monitors the DC voltage output by the converter and, in the absence thereof, provides an alternate DC voltage to the electromagnet.

A method to control a power tool includes the following steps: ascertaining a first rotational speed of the transmission in a first gear; ascertaining a first rotational speed of the motor when the transmission has been put into a first gear; ascertaining the selection of a first gear on the basis of the ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; selecting the no-load state; ascertaining the selected no-load state on the basis of the ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; adapting the rotational speed of the motor to a second gear on the basis of a ratio of the rotational speed of the transmission and the rotational speed of the motor on the basis of a look-up table; and selecting a second gear.