White Paper: Torque Verification Process of Power Tools

WHITE PAPER EZ-TORQ III TORQUE ANALYZER

Types of assembly power tools For moderate- to high-volume fastening applications assembly power tools are often the tool of choice to meet the pressing production demands. There are various types of quality power tool options to select and some brands and tool types are better than others. It is key to educate yourself and test a power tool to confirm how it performs on your fastening application. The tool you select will have an important impact on the fastening quality of the products being produced. Torque-controlled power assembly tools are

torque reference chart in the manual. Other power tools offer programming software that allows you enter the preset torque value for the fastening application. Either option for setting the torque value for a power tool doesn’t mean that torque value will be transferred 100% of the time to the fastening joint. These must be set using a reference or master torque measuring device. 2 Using a Static / Reaction Torque Analyzer or Torque Sensor There are two types: a Torque analyzer with built-in torque sensor b. A stand alone torque sensor that connects externally to a torque analyzer Both types of equipment fulfill the same torque measurement needs. A torque analyzer or sensor is a finely tuned instrument designed for calibrating and verifying torque tools. There are many brands in the market to select from, and some test equipment is more sophisticated than others. To select the proper torque analyzer or torque sensor, consider the needs of your tool, quality of the measurement equipment, the features of the analyzer or sensor, safety certifications, and, most importantly, ISO 17025 Standards. The torque analyzer or sensor have a rated torque range capacity. The power tool’s torque capacity must fall in between the torque range capacity of the torque analyzer or sensor. Mountz recommends the power tool’s maximum torque capacity fall in between 20% to 80% capacity of the torque analyzer or sensor.

available in different categories: • Pneumatic shut-off clutch tools • Electric shut-off clutch tools • Battery shut-off clutch tools • DC current control tools • DC transducerized control tools • Pneumatic pulse tools • Battery pulse tools

All these type of power tools must be preset to a target torque value, as specified by the assembly process. These types of tools must be verified frequently to ensure that the correct torque is being delivered every time it is operated. How to preset a power tool There are three ways a power tool can be preset to a select torque value: 1 Manually setting a power tool: Some assembly power tools can be set mechanically. The tool has a reference scale that can be adjusted manually, along with a

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