A threading machine is a tool used to make the threads present on pipework and other typical materials used in construction activities, gadgets, and the production of different kinds of products. These machines can be set up to engrave threads into various materials, most notably metal and hard plastic.
This article highlights parameters one needs to assess before producing threads for particular products.
The majority of processes call for either rolling or cutting the threads. Although there are compelling reasons for doing so, not all manufacturers designate rolled-against-cut threads when providing part specs.
This article outlines the circumstances in which you prefer one form over the other. The following ideas can lower manufacturing costs while enhancing item quality and durability.
Type of material
Generally, materials that are simple to roll are complicated to cut. Most of the time, this is accurate. The plasticity is what counts.
Reliability
The resistance to wear is increased in rolling threads. Rolled threads are preferable over milled threads in situations involving threaded parts and screws that must function reliably in high-pressure conditions.
Required part strength
Root toughness for rolled components might be up to 25% to 30% higher than root toughness for cut components.
Chip-less operation
A threading machine can also be operated to reduce the number of chips produced. Rolling minimizes noise and makes knurls without burrs. There is less chance of dirt on a rolled thread getting onto the parts and into the workplace.
Quantity/order size
If other factors, such as the choice of material, do not require cutting, tasks with high production numbers may suit themselves to rolling. The rolling machining method has a substantially higher output rate than cutting, making it optimal for many orders.
Required tolerances
Rolling offers numerous benefits over cutting for parts requiring high accuracy and slight variation from one piece to the next, assuring that the final product will be just as accurate and exact as the first. Rolling is more suitable for similar orders and is required in bulk.
Required surface finish
Rolling-over cutting is the preferred method for applications needing screws with excellent surface quality. Because of the rolling operation, rolled threads are polished and work-hardened, giving them a better aesthetic value.
Type of thread
Cutting should be the top priority when designing threads for situations that call for many threads, particularly deep or coarse threads. Most sorts of numerous threads or very deep or unpredictable threads cannot be accommodated by rolling since the angle cannot be sufficiently large.
Type of application
Rolling or cutting depends on the purpose for which the screw or threaded component will be utilized. Rolling is necessary for some sectors that produce nuclear or aviation parts. Cutting is preferred for smaller-scale industries where the accuracy and quality are more relaxed. However, both processes can be used interchangeably depending on the operation.
Conclusion
There is little doubt that the various iterations of the thread machinery have significantly impacted modern life. Threaded components like fasteners, pipework, nuts, and screws are used for everything from furniture to utilities. One must know the processes involved in manufacturing threads for particular goods and tasks.
