Tonnage monitor

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A tonnage monitor is a meter used on a stamping press to measure the force applied by the ram. In a press, the cutting and forming tools in the die will wear down, requiring increasing effort to stamp the part. A tonnage monitor allows the user to observe this degradation and decide when it is time to sharpen and adjust the die. It generally uses strain gauges attached to the frame or tie rods of the press. The gauges provide an electric signal by means of piezoelectric effect as they are stretched during press operation.

The tonnage monitor may provide any of the following additional features:

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Machine press

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A die is a specialized tool used in manufacturing industries to cut or shape material mostly using a press. Like molds, dies are generally customized to the item they are used to create. Products made with dies range from simple paper clips to complex pieces used in advanced technology.

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Sheet metal metal formed by an industrial process into thin, flat pieces

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Punch press machine tool for punching

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Load cell

load cell is a type of transducer, specifically a force transducer. It converts a force such as tension, compression, pressure, or torque into an electrical signal that can be measured and standardized. As the force applied to the load cell increases, the electrical signal changes proportionally. The most common types of load cell used are hydraulic, pneumatic, and strain gauge.

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A marking gauge, also known as a scratch gauge, is used in woodworking and metalworking to mark out lines for cutting or other operations. The purpose of the gauge is to scribe a line parallel to a reference edge or surface. It is used in joinery and sheetmetal operations.

Progressive stamping manufacturing process

Progressive stamping is a metalworking method that can encompass punching, coining, bending and several other ways of modifying metal raw material, combined with an automatic feeding system.

Stamping press

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Stamping (metalworking) metalworking

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Press brake Machine pressing tool for bending sheet and plate material, most commonly sheet metal. It forms predetermined bends by clamping the workpiece between a matching punch and die.

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Notching

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Blanking and piercing

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A drawbar force gauge is a gauge designed to measure forces on a machine tool's drawbar. These types of machines are found in metalworking, woodworking, stone cutting, and carbon fiber fabricating shops. Many modern machines generate well in excess of 50,000 N (12,000 lbf). Measuring and maintaining this force is an important and necessary part of a machine shop preventative maintenance plan.

Roll forming

Roll forming, also spelled roll-forming or rollforming, is a type of rolling involving the continuous bending of a long strip of sheet metal into a desired cross-section. The strip passes through sets of rolls mounted on consecutive stands, each set performing only an incremental part of the bend, until the desired cross-section (profile) is obtained. Roll forming is ideal for producing constant-profile parts with long lengths and in large quantities.

Press tools are commonly used in hydraulic, pneumatic, and mechanical presses to produce the sheet metal components in large volumes. Generally press tools are categorized by the types of operation performed using the tool, such as blanking, piercing, bending, forming, forging, trimming etc. The press tool will also be specified as a blanking tool, piercing tool, bending tool etc.

Transfer stamping

Sheet metal forming in medium-high volume production environments is often completed through the use of a Transfer Press operating a number of dies as a complete system. Each die in the system is responsible for adding more shape to the part until the metal work piece attains its final shape. What makes transfer stamping unique is that a single press operates a number of tools, the movement of the sheet metal work piece from one operation to the next is performed by automation either built into the press or onto the dies. With each closing of the press the entire system of tools will close, each performing its designed work to the sheet metal. Upon opening the built in transfer mechanism moves the workpiece from one operation to the next in the sequence.