Page 145 - UniorTools-Eng

A special procedure for the

manufacture of shears

Jaws

1. Cutting: Cutting material is the "rst operation in the technological procedure of
wrench manufacturing. Optimum design of a cut provides optimal use of material.
2. Forging: Forging technology at Unior ensures excellent strength characteristics

of wrenches. Notably, it maintains appropriate "ber orientation in a forged part,
leaving it uninterrupted and the same as in a rolled blank. That characteristic of
forged parts is vital for achieving the characteristics of products exposed to heavy
and dynamic loads.

3. Trimming: Super&uous material around a forged part is removed using a special-
purpose trimming tool; material is trimmed to the desired shape, always making the
weight of trimmings as low as possible.
4. CNC machining: A jaw is treated in a single clamping device on a CNC machine,
thus ensuring manufacture within the necessary tolerance margins of size and
positioning.
5. Heat treatment (quenching and tempering): The heat treatment with
hardening and tempering is intended to improve the structure of the steel, to
provide greater hardness and toughness of the product and other properties
required to overcome the strain that work with such products requires.

Joints

6. Forging part: The forging part is made by drop forging - cutting, forging,
trimming and calibrating.

7. CNC working: The entire working of the jaw is done using CNC machines.
Clamping devices on the machines provide the accuracy required for the quality
operation of the cutters.

Handle-joint assembly

8. Mounting the handle onto the joint and pressing: The handle is
"rmly mounted onto the joint. The handle is then pressed onto the joint, which

ensures that the mounted handle does not come loose under even the greatest
strain.
9. Bending the handle: The handle is bent to the required functional angle with a
special bending device, which provides the user with ergonomic applicability.
10. Coating: A protective colour is applied using powder coating technology,
which gives the product a professional appearance and also serves as surface
protection.

11. Mounting the sleeve: A PVC sleeve is mounted on the handle that gives a
user a good and ergonomic grip.

12. Manufacturing screws and nuts: Is done using CNC machines, which,
besides quality material and heat treatment, ensures the optimum bonds between
the individual elements of the cutter.

13. Assembly: The trained, skilled and meticulous workers performing the "nal
assembly put together the individual parts, examine the main characteristics and
turn the Unior cutter into a high quality product.

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