The production principle of a hand riveter revolves around the concept of mechanical force and leverage to join materials together securely. A hand riveter is a handheld tool that is designed specifically for fastening or joining materials using rivets.

The operation of a hand riveter is quite simple yet effective. The tool consists of a body, handles, and a jaw or nosepiece. The production principle lies in the mechanical advantage gained through the long handles, which help generate and apply the necessary force to secure the rivet.

To start the process, a rivet is inserted into the nosepiece or jaws of the riveter. The rivet typically contains a smooth cylindrical shank with a bulged head on one end. Once the rivet is properly positioned, the riveter is placed on the workpiece, with the shank passing through the materials to be joined.

Next, the handles of the riveter are squeezed together, causing the jaws to clamp down on the rivet. This squeezing action compresses the rivet against the materials, creating a secure and permanent fastening. The handles of the hand riveter are designed to provide a mechanical advantage, multiplying the force exerted by the user and enabling the rivet to be properly set.

The squeezing motion also triggers the rivet's mandrel or stem to break off at a predetermined point. The mandrel is a removable pin or rod inside the rivet that joins the two materials together. Breaking the mandrel eliminates any unnecessary protrusions, providing a smoother and neater finish.

It is important to note that hand riveters come in different sizes and styles to accommodate various rivet types and applications. Some may feature an adjustable nosepiece to handle different rivet diameters, while others have extended handles for greater leverage. Additionally, certain hand riveters may require manual operation to retract the jaws and remove the spent mandrel.

In summary, the production principle of a hand riveter relies on mechanical force and leverage. By utilizing the long handles and a squeezing motion, the tool applies sufficient pressure to secure the rivet, joining materials together permanently. This reliable and straightforward method makes hand riveters an essential tool in a wide range of industries, including construction, automotive, aerospace, and manufacturing.