Medical Device Winding Equipment

A: The wire drawing machine usually changes the diameter or shape of the wire from the disk to the disk through the wire drawing die to move the required diameter or shape. The wire must be lubricated when it enters the drawing die, and the drawing die has a dedicated cooling (usually water-cooled jacket cooling).

A: Wire drawing is dividing into 3 different machine types which are: Rod drawing machines. Medium wire drawing machines. Fine wire drawing machines.

A: Wire drawing process pulls a wire through a die to reduce its cross section. It can be carried out in the presence of a back tension that helps in reducing the die pressure and providing dimensional stability. Theoretically maximum possible reduction in one pass is 63%, but a practical limit is 45%.

A: Start machines and set controls to regulate vacuum, air pressure, sizing rings, and temperature, and to synchronize speed of extrusion. Install dies, machine screws, and sizing rings on machines that extrude thermoplastic or metal materials. Reel extruded products into rolls of specified lengths and weights.

A: Bar drawing is the term used for large diameter bar and rod stock, while wire drawing applies to small diameter stock. Wire sizes down to 0.03 mm (0.001 in) are possible in wire drawing. Bar drawing is generally accomplished as a single-draft operation—the stock is pulled through one die opening.

A: Description: Drum winding machines employ a cylindrical drum onto which the yarns are placed; the drum's rotating action helps in evenly placing the yarn on the package. Applications: Mainly used in winding small but equal counts of yarn packages for weft and velter in the weaving and knitting industry.

A: Winders are used heavily in textile manufacturing, especially in preparation to weaving where the yarn is wound onto a bobbin and then used in a shuttle. Ball winders, such as the Scottish Liaghra, are another type of winder that wind the yarn up from skein form into balls.

A: Electrical coil winding machines are used to wind coils for motors, transformers, inductors, and chokes. Coil winding equipment is used in a variety of wire winding, wire welding, and wire bonding applications.

A: On a drum winding machine, the rotary movement to the package, whether it is a cone or a cheese, is provided by the frictional contact between the package and the revolving drum surface. The traversing mechanism is provided by the grooves cut into the drum (Fig. 2.8(a)).

A: According to their different functions in an electrical machine, the windings are grouped for instance as follows: armature windings, • other rotating-field windings (e.g. stator or rotor windings of induction motors) • field (magnetizing) windings, • damper windings • commutating windings, and • compensating windings.