Special long rod for Zhejiang mechanical equipment, flange extension screw, extension screw for Jiaxing moto

  1
The metal material for manufacturing screws will generally use the wire rod that has been made into screw prize in advance, because the wire rod will deform and become thicker after forging, so we should choose the wire rod with slightly thinner screw shaft according to the demand when making screws
2
The wire diode screw wire transported to the appropriate length position is straightened through the machine and then transported to the cold heading machine equipment
The wire diode screw wire transported to the appropriate length position is straightened through the machine and then transported to the cold heading machine equipment,
3
First, the first punch moves to prepare the wire for forming, and then the second punch moves to forge the wire again and form the finished product
In the cold heading process, the number of fixed molds (dies) and stamping (flattening) molds (punches) is different
Some complex screws may require multiple punches to form, which requires multi station equipment to form screws

4
After the movement of the punch, the head of the screw has been completed, but the part of the screw shaft has no thread
The forming method of the screw thread tooth is thread rolling
Thread rolling refers to the use of two relatively rotating thread rolling dies (rolling plates) engraved with thread teeth to squeeze the cylinder blank formed by multi station or head machining in the middle

5
After starting and rubbing teeth, the whole screw has been produced
Of course, in order to make the appearance of the screw brighter and better performance, the surface treatment process is generally done
Such as cleaning and passivation of stainless steel screws, electroplating on the surface of carbon steel screws, etc
Make screws and fasteners of various colors