An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The battery pack terminals include a positive terminal, a negative terminal, and a sense terminal. The at least three terminals are configured to be interfaced with the power tool terminals. The plurality of battery cells are arranged within and supported by the battery pack housing. Each of the battery cells has a lithium-based chemistry and a respective state of charge, and power is transferable between the battery cells and the power tool. A circuit is configured to monitor the battery cells, detect a charge imbalance among the battery cells, and prevent the battery pack from operating when the charge imbalance is detected.

A multiple tool for a punching device, in particular for a turret punch press has a housing and a tool head interacting with the punching device. A thread cutter magazine including a plurality of thread cutters is connected to the tool head. A selection device is provided to select an active thread cutter which interacts with a workpiece for thread cutting. A thread cutter drive device is provided to drive the active thread cutter. As a result, a multiple tool is obtained which expands the range of applications of a punching device.

A processing system for a workpiece, with a thread formation device (44) for forming a thread in a workpiece, comprising a housing and one or more tool take-ups for a thread forming tool, rotatably and displaceably mounted in or on the housing, a linear drive and a rotational drive for the tool take-up(s) and a take-up device with one or more take-ups (19) for integrating the thread formation device (44), is characterized in that the thread formation device (44) can be integrated into the take-up device by means of a disconnectable plug connection.

The invention discloses a mailbox punching device, comprising a baseplate, two frames which are correspondingly arranged at two ends of the top of the baseplate, and a box arranged between the two frames on the two ends through a lifting device. The inner bottom of the box is provided with a first steering cavity with an opening facing downward, and a second steering cavity extends vertically in the box above the first steering cavity. A first sliding groove is connectedly set on one inner wall of the second steering cavity, and a steering platform, through bearings, is rotatably mounted in the first steering cavity. A first steering shaft, which extends into the second steering cavity, is fixedly arranged on the top of the steering platform, and a first bevel gear is fixedly mounted on the first steering shaft in the second steering cavity.

The invention discloses a mailbox punching device, comprising a baseplate, two frames which are correspondingly arranged at the two ends of the top of the baseplate, and a box arranged between the two frames on the two ends through a lifting device. The inner bottom of the box is provided with a first steering cavity with a an opening facing downward, and a second steering cavity extends vertically is up and down extended in the box above the first steering cavity. A first sliding groove is connectedly set on the one inner wall of a the second steering cavity, and a steering platform, through bearings, is rotatably mounted in the first steering cavity. A first steering shaft which extends into the second steering cavity, is fixedly arranged on the top of the steering platform, and a first cone pulley bevel gear is fixedly mounted on the first steering shaft in the second steering cavity.

An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The battery pack terminals include a positive terminal, a negative terminal, and a sense terminal. The at least three terminals are configured to be interfaced with the power tool terminals. The plurality of battery cells are arranged within and supported by the battery pack housing. Each of the battery cells has a lithium-based chemistry and a respective state of charge, and power is transferable between the battery cells and the power tool. A circuit is configured to monitor the battery cells, detect a charge imbalance among the battery cells, and prevent the battery pack from operating when the charge imbalance is detected.

A device for drilling an acoustic component including a drilling head, and the drilling head has a support unit including at least two autonomous drilling cassettes. Each cassette includes at least one drill bit, a stationary frame with respect to the support unit, and a bit support moveable along the main axis () of the cassette between a retracted position and a deployed position. In particular, each bit support is equipped with a device for sensing the skin of the acoustic component to be drilled allowing to automatically control the drilling depth of the bits of each cassette.

An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The battery pack terminals include a positive terminal, a negative terminal, and a sense terminal. The at least three terminals are configured to be interfaced with the power tool terminals. The plurality of battery cells are arranged within and supported by the battery pack housing. Each of the battery cells has a lithium-based chemistry and a respective state of charge, and power is transferable between the battery cells and the power tool. A circuit is configured to monitor the battery cells, detect a charge imbalance among the battery cells, and prevent the battery pack from operating when the charge imbalance is detected.

An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The battery pack terminals include a positive terminal, a negative terminal, and a sense terminal. The at least three terminals are configured to be interfaced with the power tool terminals. The plurality of battery cells are arranged within and supported by the battery pack housing. Each of the battery cells has a lithium-based chemistry and a respective state of charge, and power is transferable between the battery cells and the power tool. A circuit is configured to monitor the battery cells, detect a charge imbalance among the battery cells, and prevent the battery pack from operating when the charge imbalance is detected.

A variable speed transmission having a plurality of tilting balls and opposing input and output discs is illustrated and described that provides an infinite number of speed combinations over its transmission ratio range. The use of a planetary gear set allows minimum speeds to be in reverse and the unique geometry of the transmission allows all of the power paths to be coaxial, thereby reducing overall size and complexity of the transmission in comparison to transmissions achieving similar transmission ratio ranges.