A grinding tool consisting of bonded abrasive grains. This includes diamond and reinforced wheels.
Adjustable barrier guard
A barrier guard with provisions for adjustment to accommodate various jobs or tooling set-ups.
A type of gravity drop hammer in which the ram is raised for each stroke by an air cylinder. Because the length of stroke can be controlled, ram velocity, and therefore the energy delivered to the work piece, can be varied.
A device that limits the machine to a single stroke if the activating means is held in the operative position.
A rotating shaft used for mounting and transmitting torque to a cutting tool.
Someone the employer has given the authority and responsibility to perform a specific assignment.
A barrier device that allows more access to the hazard area, but still restricts access enough to warn of an approaching hazard.
A barrier such as a guardrail, fence, or other framework designed to prevent employee access and exposure to a hazard.
A barrier that provides a physical restriction from a hazard.
An endless belt of any material, operating over suitable pulleys to move materials placed on the belt.
A device used in shifting belts on and off fixed pulleys on line or countershaft where there are no loose pulleys. Belt poles are sometimes called "belt shippers" or "shipper poles."
A device for mechanically shifting belts from tight to loose idler pulleys or vice versa, or for shifting belts on cones of speed pulleys.
A bench mounted off-hand grinding machine with either one or two wheels mounted on a horizontal spindle.
The application of stress concentrated at specific points to permanently turn, press or force from a straight, level or flat condition to a curved or angular configuration.
A replaceable tool having one or more cutting edges for shearing, notching or coping.
To bypass a portion of the sensing field of a presence-sensing device. The purpose is to allow objects such as tooling, feed stock, and work pieces to pass through the sensing field without sending a stop signal to the controlled machine. There are two blanking modes: Fixed and floating.
A hole drilled in an object, such as an abrasive wheel, that does not go all the way through the object.
A compressible disc or washer, usually of blotting paper, plastic, cardboard, or gasket material, that is used between the wheel and the flanges to evenly distribute flange pressure on the wheel.
A type of gravity drop hammer where wood boards attached to the ram are raised vertically by action of contrarotating rolls, and then released. Energy for forging is obtained by the mass and velocity of the freely falling ram and the attached upper die.
Plate attached to the press bed having holes, T-slots, or other means for attaching the lower die or die shoe.
Mechanism for stopping or preventing motion.
A conveyor in which one or more chains (including those with paddles or bars attached to them) move the conveyor. Specific examples of chain conveyors include drag, rolling, pusher bar, pusher chain and sliding chain conveyors.
A feature that allows a safety light curtain system to be programmed to ignore objects. Also called "fixed blanking."
A machine that cuts material into chips.
A revolving clamp-like device used for holding and driving the work piece.
A mechanism to couple the flywheel to the crankshaft. When engaged, it allows the driving force to be transmitted to the press slide.
See feather board.
Occurring at the same time.
A pulley having two or more steps in a conical shape for driving machinery.
Cone and plug wheels (Types 16, 17, 18, 18R, and 19)
Abrasive wheels manufactured with blind hole threaded bushings. They may be used on all surfaces except the flat mounting surface. Specific characteristics of the different cone and plug wheels are:
• Type 16 cones have a curved side with a nose radius.
• Type 17 cones have straight sides with or without a nose radius.
• Type 18 and 18R plug wheels are cylindrical in shape with either a square or curved grinding end.
• Type 19 cone wheels are a combination of cone and plug shapes.
Sensors, manual input and mode selection elements, interlocking and decision-making circuitry, and output elements of the press-operating devices and mechanisms.
Where the edge or periphery of the work piece is sheared.
Mechanism used to balance or support the weight of the connecting rods, slide, and slide attachments.
Abrasive wheels used to cut material such as masonry, pipe, etc.
Cutting tool or saw blade
A tool used on a metal sawing machine.
The complete movement of the ram from its starting position and return to that same starting position.
A straight-sided groove, perpendicular to the face of the work piece, having a width greater than the thickness of a single saw blade.
A control or attachment that is any of the following:
• Restrains the operator from inadvertently reaching into the hazardous area.
• Prevents normal or hazardous operation if any part of an individual's body is inadvertently within the hazardous area.
• Automatically withdraws the operator's hands, if the operator's hands are inadvertently within the hazardous area during the hazardous portion of the machine cycle.
• Maintains the operator or the operator's hands during the hazardous portion of the machine cycle at a safe distance from the hazardous area.
Die or dies
Tooling used in a press for shearing, punching, forming, drawing, or assembling metal or other material.
Die enclosure guard
Guard attached to the die shoe or stripper in a fixed position.
A person who installs or removes dies from the press, and makes the necessary adjustments so the tooling functions properly and safely.
Process of installing or removing dies, and adjusting the dies, other tooling and the safeguarding guards or devices.
Plate or block that a die holder is mounted on. It functions primarily as a base for the complete die assembly and, if used, is bolted or clamped to the bolster plate or the face of the slide.
Actual or design dimension between the mounting surfaces of a die.
A machine that mechanically divides the dough into pieces of predetermined volume or weight.
When material is removed from the cutting surfaces of an abrasive wheel to expose new sharp cutting surfaces.
A single or multiple spindle machine that uses a rotating cylindrical tool such as a drill, a counterboring tool, and similar tools to produce a hole, blind hole, counterbore, countersink, and similar cavities in work pieces. A work support means is provided to feed the tool into the work piece or the work piece into the tool.
Waste product or impurities formed on the surface of molten metal.
Dump bin and blender
That part of the flour handling system where the containers of flour are emptied.
Face of the slide
Surface of the slide to which the punch or upper die is generally attached.
A work-guiding and hold-down device consisting of stock with a series of spring-like fingers along the edge, set and positioned at an angle to the work piece.
Placing material in or removing it from the point of operation.
A device used to locate and guide a work piece relative to the cutting tool.
A guard attached to a fixed surface used to enclose a hazardous area and prevent employees from placing any part of their body into the point of operation.
Fixed barrier guard
A guard attached to the frame, bolster, or other surface to enclose all or part of the point of operation or other hazard area.
A stationary blade having one or more cutting edges.
A feature that allows a safety light curtain system to be programmed to ignore objects. Also called "channel blanking."
A device used to locate, hold, or clamp one or more work pieces in a desired position.
Collars, discs, or plates between or against which wheels are mounted. There are four types of flanges:
• Straight relieved.
• Straight unrelieved.
Floating blanking (floating window)
A feature that allows a safety light curtain system to be programmed to ignore the interruption of one or two beams within the light curtain. This allows the feeding of an object through the defined area at any point along the length of the curtain without causing it to produce a stop signal.
A floor mounted, off-hand grinding machine with one or two wheels mounted on a horizontal spindle. The wheels are normally twenty-four inches or thirty inches in diameter and used for snagging operations.
Metal formed to a desired shape by impact or pressure in hammers, forging machines (upsetters), presses, rolls, and related forming equipment. Forging hammers, counterblow equipment, and high-energy-rate forging machines impart impact to the work piece, while most other types of forging equipment impart squeeze pressure in shaping the stock. Some metals can be forged at room temperature, but the majority of metals are made more plastic for forging with heat. Forged or drop forged parts are much stronger than poured or cast parts from foundries.
A class of forging equipment where the shaping of metal between dies is performed by mechanical or hydraulic pressure and usually is accomplished with a single workstroke of the press for each die station.
Full revolution clutch
Type of clutch that, when engaged, cannot be disengaged until the press has completed a single cycle (stroke).
See miter gage.
An opening or recess in the frame of the machine to permit positioning of material or work pieces.
Gate or movable barrier device
Safeguarding device that encloses the point of operation before press motion can be initiated.
Guard (abrasive wheels)
An enclosure designed to restrain the pieces of an abrasive wheel and furnish protection to the operator if the wheel is broken during operation.
A barrier that does at least one of the following:
• Prevents the hands or other body part from reaching through, over, under, or around the guard into the hazard area.
• Prevents objects or debris from falling onto or being ejected towards an employee.
The pin attached to the upper or lower die shoe. It operates within the bushing on the opposing die shoe to maintain the alignment of the upper and lower dies.
A condition that could cause physical harm to a person.
An area or space that poses an immediate or impending physical hazard.
A machine used for cutting or grinding slabs and other coarse residue from the mill.
A turning machine in which the work piece revolves about a horizontal axis. While the work is revolving, it is being shaped by cutting tools working either parallel to the axis of the work or at an angle to the axis of the work.
A pulley or roller on a shaft that presses against or rests on a drive belt to guide it or take up slack.