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.
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.
Pulse tools increase productivity and enhance product quality through precision torque control and user comfort. Regular tool calibration ensures repeatable accuracy and adherence to international standards. A pulse tool is a power tool that must be properly calibrated and maintained. Torque testing ensures the pulse tool is operating at peak performance and can highlight any potential tooling problems before they arise perhaps due to tool wear or broken components.
Setting the torque output of a pulse tool requires a torque tester or torque sensor. Here are some quick tips for setting the torque output of a Mountz pulse tool.
The ability to audit joints such as flanges with gaskets is important for critical applications where leakage or rupturing of the connection can have disastrous, costly or environmental implications. Auditing is a preventative quality measure and is a required part of an ISO or other quality management system.
Auditing large bolts is very difficult. Use of a proper auditing tool can make life easy for an auditor.
Torque is an inexact science with a lot of differing variables. Resolving or isolating these variables is the key to improve torque errors and fastening procedure. This is done with data. Auditing provides data to help make improvements to quality.
The Mountz Bolt Auditing System for large bolted applications consists of a HSD torque multiplier with embedded strain gauges to measure torque as well as an angle encoder to measure angle. The multiplier is connected to the TorqueMate® PTT-2000 torque tester designed specifically for torque and angle analysis and data collection. The PTT-2000 Bolt Audit Model is capable of both torque and angle measurement and has the ability to store up to 5000 readings. In addition the system includes PC based Windows software to configure the PTT for torque measurement tests. The stored data can be downloaded to a PC for use with quality control software or for analysis in Excel. A barcode scanner can be used with the system to enhance its function. The system provides two main modes for Auditing; the first is an ” Enhanced First Movement” mode the second is a Torque vs. Angle Audit mode. These modes provide different information depending on the application requirements.