NEW THREAD ROLLING MACHINES IN SARIV

The grooving in blind rivets, i.e. the threaded surface in rivet bodies and mandrels, provides the rivets with a higher anchoring capacity on the surfaces to be fixed.
Among Sariv products, this essential characteristic is in both multigrip rivets, grooved rivets and structural rivets.
In particular, Sariv structural blind rivets are becoming an increasingly important part of the volume of items purchased by our customers...

The grooving in blind rivets, i.e. the threaded surface in rivet bodies and mandrels, provides the rivets with a higher anchoring capacity and better mechanical performances.

Among Sariv products, this essential characteristic is in both multigrip rivetsgrooved rivets and structural rivets.

In particular, Sariv structural blind rivets are becoming an increasingly important part of the volume of items purchased by our customers.

Their grooved mandrel plays an active role in the application by remaining locked inside the rivet body: this provides the highest mechanical performances ever among all blind rivets.

Hence the decision to enrich Sariv production line with two new thread rolling machines since the end of 2018, passing from seven to nine.

 

How does a thread rolling machine work?

First step: before processing, the operator sets the technical and mechanical parameters to be respected. The specific parameters related to each article can be memorized, so after the first setting they can be recovered automatically.

Through an introduction system served by a linear motor, the material to be grooved slides in a guide towards “flat dies”, that is to say the metal structures creating the grooving in the component. In particular, one side keeps static and acts as a support surface for the component to be grooved, while the other one runs the groove exerting a pressure on it.

The grooving is therefore the result of a deformation of the material, not of removal of the same.

In our supply chain, the grooving is performed both on semi-finished products such as rivet bodies or mandrels, and on finished rivets.

Our new machines are of two types: one for high production volumes; and one for smaller sizes, which however allows faster setup and therefore faster changes in the type of processing, suitable for smaller production volumes.

With the aim of developing the 4.0 technology implemented in Sariv for a long time, the new rolling machines also communicate with our company network through our MES (Manufacturing Execution System), which guarantees full traceability and constant monitoring in every single production step.

 

See some examples by clicking on the images below:

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