Abstract: In one aspect, a machine tool having a frame assembly, a first head having a first rotatable workpiece holder, and a second head having a second rotatable workpiece holder. The frame assembly includes a first door movable in a first direction between a first closed position and a first open position and a second door movable in a second direction transverse to the first direction between a second closed position and a second open position. The frame assembly has an access opening sized to permit access to the first and second heads with the first door in the first open position and the second door in the second closed position. The frame assembly has a larger access opening to increase ease of user accessibility to the first and second heads with the first door in the first open position and the second door in the second open position.

Abstract: In one aspect, a swiss-type machine tool is provided that includes a workpiece holding shaft, a workpiece supporting shaft, and a tool holder associated with the workpiece supporting shaft for holding at least one tool. The machine tool includes a drive operable to rotate the workpiece holding shaft and the workpiece supporting shaft around an axis. The workpiece holding shaft has a work holder configured to secure a workpiece to the workpiece holding shaft. The workpiece holding shaft is axially shiftable relative to the workpiece supporting shaft to adjust a position of the workpiece relative to the workpiece supporting shaft. The machine tool further includes a removable workpiece support, such as a guide bushing, configured to be releasably connected to the workpiece supporting shaft and rotate therewith. The workpiece support slidably contacts the workpiece and permits axial movement of the workpiece relative to the workpiece support.

Abstract: In one aspect, a swiss-type machine tool is provided that includes a workpiece holding shaft, a workpiece supporting shaft, and a tool holder associated with the workpiece supporting shaft for holding at least one tool. The machine tool includes a drive operable to rotate the workpiece holding shaft and the workpiece supporting shaft around an axis. The workpiece holding shaft has a work holder configured to secure a workpiece to the workpiece holding shaft. The workpiece holding shaft is axially shiftable relative to the workpiece supporting shaft to adjust a position of the workpiece relative to the workpiece supporting shaft. The machine tool further includes a removable workpiece support, such as a guide bushing, configured to be releasably connected to the workpiece supporting shaft and rotate therewith. The workpiece support slidably contacts the workpiece and permits axial movement of the workpiece relative to the workpiece support.

Abstract: An additive manufacturing machine that includes a wire supply including a wire drive configured to advance a wire at a wire feed rate and a wire heater configured to apply resistive heating to heat the wire. The additive manufacturing machine includes an additive head for emitting a laser beam to weld the wire to a substrate, a sensor configured to detect a weld parameter, and a controller operatively connected to the wire supply, additive head, and sensor. The controller is configured to determine a failure mode of the weld as the laser beam welds the wire to the substrate based at least in part upon the weld parameter. In response to determining the failure mode, the controller is configured to adjust at least one of the wire feed rate, the resistive heating, and a power of the laser beam as the laser beam welds the wire to stabilize the weld.

Abstract: A portable floppy disk auxiliary memory device contains a floppy disk drive device (7) and includes a portable body (1) having an insertion slot (1e) defined in a front face thereof for insertion of a floppy disk (8). An openable and closable door (2) is mounted on the body (1) for covering the front face thereof. If the door (2) is opened while the floppy disk drive device (7) is being operated, an alarm is issued.

Abstract: A low power consumption type tape reader permits miniaturization of reel motors and ensures stopping a tape (3) at a first rewind stop code, even if the response of a brake magnet (11) is somewhat poor. When a rewind command is received, the rotational speed of a capstan motor (12) is switched from a forward low speed to a reverse low speed, and then a feed magnet (14) is actuated to rewind the tape (3). The rotational speed of the capstan motor (12) is gradually increased to a reverse high speed. When a rewind stop code is detected, the speed of the capstan motor (12) is gradually decreased to the reverse low speed, and then the brake magnet (11) is actuated to stop the feed of the tape (3) temporarily. A reversible counter (40) stores the number of rewind stop codes detected during the time interval between the detection of the first rewind stop code and the temporary stopping of the feed of the tape (3).

Abstract: A system for exchanging data between a microprocessor (1) and an auxiliary memory device (10) connected to the microprocessor (1). A plurality of data exchange common RAMs (24, 25) are arranged in the auxiliary memory device (10), and the operating states of the common RAMs (24, 25) are stored in memory means (26, 27), respectively. Data exchange is performed through a common RAM (24, 25) which is not being used in accordance with the storage content of said memory means (26, 27), thereby decreasing the waiting time for data transmission/reception.

Abstract: When a memory cassette having semiconductor memory is attached to or detached from a connector mounted on an adapter, the supply of power to the memory cassette through the adapter is switched on or off and an interface signal between the memory cassette and the adapter is rendered active or inactive in response to connection or disconnection between the memory cassette and the adapter. The stored content of the semiconductor memory can be protected against destruction which would otherwise result from application of a power supply voltage upon connection or disconnection between the memory cassette and the adapter.

Abstract: An apparatus for holding a memory cassette in a cassette adapter wherein the memory cassette cannot be ejected from the adapter, even by pressing an eject button, while data is being written into or read from the memory cassette. Provided are means for generating a signal indicating that a read or write operation is in progress, a locking mechanism for locking a cassette ejecting mechanism to render the latter inoperable, and a drive circuit responsive to the generated signal for actuating the locking mechanism to prevent ejection of the memory cassette until the read or write operation is completed.

Abstract: An apparatus for controlling the writing of data from a processor into a memory having different read and write times, wherein the memory is connected directly to the processor through address and data buses without the use of an input/output port. A timer circuit is connected to the buses and memory and is controlled by the processor to produce a write timing signal which controls the writing of data into the memory. The processor is placed in a holding state, based on the write timing signal, for a period long enough to assure that the data will be written into the memory in its entirety.

Abstract: In a character display in which dot data is read out, by a character address and a row address, from a character generator having stored therein each character in the form of dots and applied to a display unit in synchronism with dot clock pulses to provide a display of the character. There are provided means for frequency dividing the dot clock and character clock pulses and means for controlling the step-by-step advancement of the row address, whereby a character display of a desired size is provided.