THREADING MANUFACTURING Threading manufacturing

Threading manufacturing

Threading manufacturing is the process of creating a screw thread. More carvings are produced each year than any other element of the machine. There are many methods of generating topics, including subtractive methods (many kinds of carving and sanding, as detailed below), deform or transformational methods (rolling and forming, molding and casting), additive techniques (such as 3D-printing), or combinations of it.

Methods

There are various methods to get the thread. The choice of method for any application is selected on the basis of the limitations of time, and money, the degree of precision needed (or not at all), what equipment is already available, that the purchase of equipment can be justified on the basis of the result of unit price of the threaded part (which depends on how many units will be ), etc.

In general, certain processes generating the flow, usually fall along certain portions of the spectrum of toolroom production parts mass-produced parts, though there may be considerable overlap. For example, the flow of lapping the following thread-fall only in the extreme toolroom spectrum, while the thread rolling is a large and diverse area of ??practice, which is used for everything from microlathe leadscrews (a bit expensive and very accurate) to cheap deck screws (very affordable and up to a spare).

Topics of metal fasteners generally created on the thread rolling machine. They can also be reduced with lathe, tap or die. Rent a topic more to cut threads, with an increase of 10% to 20% in tensile strength, and possibly more in the fatigue strength and durability.

Thread cutting

Thread cutting, in comparison with the flow forming and rolling, is used when the full depth of flow required, the quantity is small, though not very accurate, tapping the shoulder is required, the thread taper thread or material is fragile.

Taps and dies

Common method of carving is cut with taps and dies. Unlike drills, hand taps are not automatically removing the chips they create. Side of the crane can not reduce their flows in one rotation because it creates long chips, which quickly jam the tap (an effect known as "crowding, possibly breaking it. Thus, the manual carving, the normal use of the key themes is to reduce with 1 / 2 to 2 / 3 turn (180 to 240 degree rotation), then tap back about 1 / 6 of the turnover (60 degrees) until the chips are broken ...