A dial torque wrench is typically used as a quality control instrument to verify or monitor torque. What is a dial wrench? A type of wrench that measures the amount of torque applied to a fastener and displays the torque value on a dial. The dial wrench captures the finishing torque applied to a fastener with a memory pointer.
The versatile dial wrench can be used as an assembly tool for fastening applications or as a quality control tool for joint testing, torque auditing or torque verification. These old reliable tools are suitable for use by operators of any skill level. For fastening applications, an operator can clearly monitor the torque applied. Some dial wrench models feature an audio and visual signal system, which provide a clear indication to the operator when the target torque has been reached. For torque auditing applications, a dial wrench is alternative solution to a digital wrench for conducting a quick visual torque verification test.
Torque Auditing After the Assembly Process Torque measurement is paramount for many manufacturers. Simply running a fastener or bolt down until it’s snug and tight and assuming the torque control process is complete, is no longer sufficient. Measuring torque doesn’t stop once the assembly process is complete. As part of the overall quality control process, manufactures should include a “Torque Auditing” program. A method to detect loose fasteners or any signs of joint relaxation. Torque auditing validates the fastening process, the torque tool, the product design and the materials used for the application.
Built for high production environments, FlexPower pulse tools provide durability, power and speed for most industrial assembly applications. To maintain consistent accuracy, the torque output for pulse tools must be verified periodically. You should also validate the actual torque being applied to the fastener by auditing the joint application. The goal for auditing is to verify adequate torque was delivered to the fastener and detect any loose fasteners or joint relaxation.
You need to validate the proper pulse tool is being used for the assembly application. Although a pulse tool has a specified torque range, the type of joint the tool is being utilized on is a key component. A pulse tool is a discontinuous tool and added adapters or extensions create a dampening effect, thus lowering torque values.
Quality and reliability form the foundation upon which new companies build their futures and stake their reputations. As consumers, we are largely unaware of the painstaking pre-production steps and choices that companies make in order to develop products and assure their reliability. One of the most challenging steps that face these fledgling manufacturers is the selection of the tools that they will be depending on to maximize production, guarantee product quality, and assure the productivity and safety of their workers.
Tool selection posed a challenge for a slot machine manufacturer that was developing a new computerized gaming system. The new slot machine contained delicate and sophisticated electronic components. It needed to be built to withstand the rigors of twenty-four hour a day use by enthusiastic gamblers.
Before going into full production, the slot machine manufacturer initiated an extensive prototyping program to establish assembly procedures, and torque specifications using hand torque tools. However, before full production could be started, it had become apparent that more attention was going to have to be given to tool selection with an eye to the issues of productivity, quality and worker comfort.
A screw counter helps manufacturers detect and eliminate costly screw-fastening errors during the assembly process. Using a screw counter is like putting the eyes and ears of a quality control manager where they are needed most – right on the assembly area. The Scout screw counter from Mountz Inc. verifies that all fasteners have been installed and seated properly. The screw counter takes the control of the assembly process out of the operator’s hands.
Designed to detect cross-threading, omissions, unfinished rundowns and cycle completes, the Scout ensures the assembly process is done correctly the first time. The Scout operates jointly with Mountz electric screwdrivers and STC30, STC40, ET-30D, FT30-D and YFC35-D power supplies. With four ports on the side of the Scout, a maximum of four screwdrivers can share one program with the unit. The Scout features the ability to ‘learn’ the characteristics of not only the power tool but also that of the application that it is being used on. This allows the Scout to distinguish between a fastener that was properly seated and one that was either stripped or cross-threaded.
The intent of the screw counting process is to ensure that all fasteners are accounted for during the assembly process. The later an error is detected on the assembly line, the more it costs in rework time and expenses. If a fastening error is committed and detected during the assembly process, the operator can it fix by properly completing the process or prevent the faulty product from being moved down the line.
Selecting the proper electric screwdriver for a fastening application can be a daunting task at times. So many options and features being offered in the torque tool market today. Understanding the technology and educating yourself about the various differences among the electric screwdriver technology is the important element in order to properly evaluate a tool that will best fit your assembly application.
Electric screwdrivers that utilize a separate transformer (power supply) are designed for precision torque control and increasing production. The power supply may look like a simple little box that an electric torque screwdriver plugs into, but in recent years new technologies and innovative features have been added to these power supplies.
Internally, there are two different types of design technologies that are used for a transformer. There is the old technology, a coil designed power supply. The modern technology that is becoming more commonly used in a transformer is SMPS (switched-mode power supply).
Coil Power Supply (Linear Power Supply) is relatively a simple design that is not energy efficient and can provide an unstable voltage output to the electric screwdriver, which can affect the repeatability of the torque tool. The coil designed power supply can also shorten the life cycle of an electric screwdriver and increase the maintenance frequency for a power tool. Another added expense to deal with down the road. Commonly, a power supply that uses the coil technology is large, bulky and heavy because the unit has large mains-frequency transformers and heat-sinked electronic regulation circuitry inside the housing.
A switched-mode power supply (SMPS) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Unlike a linear power supply (Coil Power Supply), the SMPS uses a pass transistor that continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. An environmentally friendly power supply.