Reaction in Pneumatic Screwdrivers

The reaction in Pneumatic Screwdrivers

In today’s blog the discussion will be about the reaction generated by pneumatic screwdriver while tightening and why does it happen and its effect on application and worker.

Pneumatic Screwdriver is one of the most conventionally used tools in manufacturing industries for assembling various applications on a large scale. Pneumatic the screwdriver does not pulse unit, unlike many pneumatic tools, due to which they generate torque reaction while tightening.

 The operation of the pneumatic screwdriver is very simple it consists of an air motor which runs on the compressed air and clutch mechanism consisting of sun and planetary gears in motions that produce the torque in the spindle.

 The clutch mechanism is the most important part of the screwdriver it limits the amount of torque required for tightening for different applications. A clutch mechanism is usually located between the output shaft of the torque screwdriver and the air motor. The main component of the clutch mechanism is the coil spring which basically controls the whole mechanism. When the torque generated by the tool reaches a certain level, the elastic force of the spring is overcome and the clutch mechanism slips. Thus, the maximum torque that can be applied to a fastener is limited by the setting of the clutch mechanism.

 Torque Screwdrivers are available with several types of the clutch, including “cam-over”, “cushion clutch”, and “auto shutoff”. Most of these clutch types are used in electric screwdrivers, air screwdrivers, impulse screwdrivers, manual torque screwdrivers, and cordless torque screwdrivers.

Pneumatic screwdriver generates reaction while tightening due to the newton third law, when the tightening gets complete the rotating mechanism stops suddenly and the momentum generated while tightening gives the reaction force. The more the tightening torque is, the more will be the reaction force generated.

There is no reaction in pulse tool because it has a pulse unit with oil filled in it which generates torque & when the tightening is completed and the tool gets stopped the reaction gets dissipated by the oil in the pulse unit.

If the reaction generated after tightening is small it can be sustained by bare hands but if the torque gets larger it gets difficult for handling with hands. The reaction generated can also damage critical and small applications. It can also injure the worker who is handling the tool while tightening. Due to these drawbacks, the pneumatic screwdriver having large torque can affect the work efficiency of the manufacturing unit and also the workers.

 To counter these drawbacks reaction arms are used along the tool to dissipate any reaction coming after tightening. They can also be used as a positioning arm to increase work efficiency.

Microntech Engineers Pvt Ltd is a respected brand for assembly solution have branches all over the India. They have pneumatic screwdriver from YOKOTA and electric screwdriver from KILEWS both are respected brands. Microntech also offers torque reaction and positioning arms. To know more about the assembly solution provided by the Microntech you can visit the company’s website www.microntechgroup.com or you can contact your nearest Microntech branch.