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inch: to impart incremental motion to the slide. NOTE: INCH, as used in press terminology, has no relationship to the common measure of length. The term jog is synonymous with the term inch except in mechanical power press terminology. INCH is accomplished by the following means: (a) normal clutch actuation in the INCH mode; (b) clutch actuation using an INCH control circuit to provide a time interval to each INCH actuation (“timed INCH”); and (c) actuation of a separate drive to produce a slow speed (“slow INCH”). Reference: inch mode; jog mode.

inch mode: an operating mode wherein incremental slide motion is imparted by manual means, by a single individual. NOTE: INCH mode is intended solely for use by die setters or other service personnel. Use of INCH mode for production operations is prohibited by safety regulations and standards. For a mechanical power press, equipped with part revolution clutch, actuation of the INCH control by the die setter (or other service person) engages the clutch to produce an increment of slide travel. The length of the increment of slide travel obtained at each actuation is dependent upon: (a) time of engagement of the INCH control; (b) length of the stroke; (c) speed of the press; and (d) position of the slide within the stroke. Reference: dead inch; jog mode; micro-inch drive.

inclinable press: preferred term is open back inclinable press.

inclined press: any press having the frame built in a fixed inclined position.

inner slide: the slide of a multiple action press to which the punch of a draw die is fastened. NOTE: On a double action press, the inner slide operates within and is guided by the outer slide. It is usually operated directly by a crankshaft or eccentric gear and normally duplicates the action of a single action press. On a triple action press, the inner slide is operated by a toggle or cam mechanism to provide dwell at the bottom of its stroke. Reference: dwell.

integral carriage: a type of moving bolster wherein the top plate serves as a bolster and is not removable. NOTE: In a moving bolster press requiring die cushions, the integral carriage serves the multiple role of a bolster for mounting the die(s) and guiding the pressure pins, as well as a carrying device for supporting the pins during transit and die changing.

interlocked barrier guard: a barrier, or section of a barrier, interlocked with the press control to prevent inadvertent access to a hazard area during normal operation.

iron hand: a press-mounted unloading mechanism for automatically removing a workpiece(s) from the point of operation. NOTE: An iron hand can be either press-driven or press initiated.

jog mode: an operating mode of a full-revolution clutch press wherein an intermittent motion is imparted to the slide by momentary operation of the drive motor, after the clutch is engaged with the flywheel at rest. NOTE: JOG places much more severe conditions on the drive motor and drive components than normal operating conditions. Reference: dead inch; inch.

knee press: preferred term is adjustable bed press.

knockout: a mechanism for releasing the material or workpiece(s) from the upper die. NOTE: Types of knockouts include the following: (a) crossbars through slots in the slide, with actuation by adjustable knockout posts fixed to the press frame; (b) cam knockouts with actuation by bell cranks on the slide; and (c) spring or cylinder actuated knockouts.

knockout mechanism: preferred term is knockout.

knuckle joint press: a single action press in which force is transmitted to the slide by a single toggle (or knuckle joint) mechanism that is closed and opened by means of a crankshaft and connection. NOTE: Used for embossing, coining, sizing, heading, swaging, extruding, and trimming.

left-to-right shaft press: a mechanical power press in which the main shaft and other drive shafts are positioned in a left-to-right orientation.

liftout: a mechanism for releasing the material or workpiece(s) from the lower die. NOTE: Types of liftouts include the following: (a) crossbars below the top of the bed, with actuation by rods connected to the slide; (b) cam knockouts with actuation by bell cranks on the slide; and (c) spring or cylinder actuated knockouts.

link drive: a type of press drive that uses a link motion.

link motion: the slide motion produced when the slide connection(s) is driven by a crankshaft, eccentric shaft, or eccentric gear(s) driven linkage. NOTE: The slide motion produces: (a) fast approach of the slide to the working portion of the stroke; (b) slowdown immediately above the working portion of the stroke; (c) near constant velocity through the working portion of the stroke; and (d) rapid slide return to the top of the stroke.

live pin: the rotating main shaft on an eccentric gear press wherein the shaft is fastened to and rotates with the gear.

load monitor: instrumentation to measure and display forces being applied.

loading: preferred term is feeding.

locking device: preferred term is die cushion lock.

lockout/tagout: the placement of a lock and/or tag on an energy isolating device, such as a disconnect switch or shut-off valve, in accordance with an established safe work procedure. NOTE: A lockout/tagout procedure is used to prevent unexpected start-up or other hazardous press motion.

lower slide: the third slide on a triple action press.

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