AIMCO Global - Torque Measurement - Before, During, and After Assembly

Proper torque measurement is critical in many assembly operations.

AIMCO provides expertise and measurement equipment for all three phases - before, during, and after assembly. Tool testing or capability studies can be easily performed in the tool crib or lab. Fine tuning of torque settings a process verification are achieved on the assembly line with rotary transducers. Use our complete line of electronic wrenches for final residual torque testing. Utilize our years of experience to help design around your specific auditing requirements. From simple dial wrenches to electronic joint analyzers for R&D, AIMCO is with you every step of the way.

BEFORE ASSEMBLY
Using torque measurement equipment before assembly is typically used for tool setup and tool capability studies. For tool setup, the tool crib will want to set the tool close to the torque required by the application. For tool capabilities studies, one can ensure that the tool can provide the necessary torque with required repeatability. The equipment used for this testing would be: Desktop testers with internal transducers Auditor analyzers with either stationary or rotary transducers UFT hydraulic joint simulators for use with rotary transducers
DURING ASSEMBLY
Once the tool is on the line, many manufacturers utilize rotary transducers connected to an Auditor analyzer. This is normally used to finalize the torque setting of the tool and to confirm process capability. Since each application has a different joint rate and tolerances, the performance of the tool on the application may differ from the tool crib results. Using a rotary transducer connected to Auditor analyzer, one can take these differences into account. This type of torque reading is called a dynamic torque reading.
AFTER ASSEMBLY
As a final check, many users wish to verify residual torque. By checking the torque after assembly, you not only verify adequate torque was delivered to the fastener, but may also detect missed or loose fasteners, or joint relaxation. But since the application is already seated and friction during rundown is different than the friction in a static joint, the torque reading will vary from those in the tool crib and from the dynamic values. These differences will need to be accounted for when engineering a residual torque specification. The equipment used for this testing would be: Click wrenches Dial wrenches Electronic wrenches with Auditor analyzers Rotary transducers and Auditor analyzers with hand driver to move fastener
Catalog Data	Tool Crib Data	Dynamic Torque Data	Residual Torque Data
What is the general range of this tool?	Is the tool capable?	Is the process capable?	Is the product correct?
What are the specs as tested at the factory?	What is the repeatability of the tool?	Is the tool set for the joint rate of the application?	Have all the fasteners been fastened?
	Can I set the tool close to what they need on the floor?	Is the air pressure on the line close to that in the crib?	Are any of the fasteners cross-threaded, or yielded?
	Has the tool been repaired properly?	Might the tool require maintenance?	Did the joint experience any relaxation?