Introduction to Fasteners and their Types in CNC Machining--cncmass.com(removing broken tap Brandon)
- source:WEINBERG CNC Machining
Fasteners play a critical role in the field of CNC machining, ensuring that various components are securely held together. From simple screws and bolts to more complex rivets and clips, fasteners provide necessary structural integrity to a wide range of products and systems. In this article, we will explore the different types of fasteners used in CNC machining and discuss their manufacturing processes.
1. Screws and Bolts:
Screws and bolts are perhaps the most common types of fasteners used in CNC machining. They are threaded rods with either sharp or pointed ends, designed to be screwed into pre-tapped holes. The thread pattern and diameter can vary based on application requirements. Typically made from stainless steel, aluminum, or titanium, screws and bolts come in a variety of shapes and sizes, including hex head, socket head, Phillips head, and flathead.
To produce screws and bolts, manufacturers utilize CNC machines such as lathes and mills. Computer-controlled cutting tools shape and form the raw material into the desired size and threading patterns. Further processes like heat treatment and coating may also be employed for improved durability and corrosion resistance.
Nuts are complementary fasteners designed to mate with screws and bolts by providing threaded openings for them. Commonly hexagonal in shape, nuts are manufactured using similar CNC machining techniques as screws and bolts. By manipulating the machine spindle and utilizing precision lathe operations, manufacturers achieve accurate dimensions and ensure compatibility with corresponding screw or bolt sizes.
Rivets are permanent fasteners used when welding or screwing is not feasible due to material type, thickness, or accessibility considerations. During riveting, a solid cylindrical pin is driven through two or more materials, while a separate piece called a rivet head holds it in place. Through deformation caused by hammering or pressing, the pin's end expands, forming a secure connection.
CNC machines also aid in rivet production. They can shape and cut the cylindrical pins precisely according to design specifications, ensuring consistent quality across multiple parts.
4. Clips and Clamps:
Clips and clamps are fasteners that exert pressure or hold objects together without the need for threads or adhesive materials. In CNC machining, these components play vital roles in securing thin sheets, cables, tubes, or even circuit boards within an assembly.
To manufacture clips and clamps, specialized bending and cutting techniques are utilized with the help of CNC machinery. Manufacturers feed raw material into dedicated dies that guide the machine to form the desired shape accurately.
Washers are flat, disk-shaped fasteners placed between a nut or bolt head and the surface it is secured against. They distribute the load, preventing damage caused by friction and protecting the integrity of connected components. Washers come in various sizes and materials like stainless steel, aluminum, or nylon.
CNC machines assist in producing washers by punching out perfectly shaped disks from sheet materials. Automated processes ensure precision in size and thickness as required by specific applications.
In conclusion, fasteners are an integral part of CNC machining, providing secure connections between various components. Whether it is screws, bolts, nuts, rivets, clips, or washers, each type fulfills unique requirements in terms of strength, installation method, and material compatibility. CNC machining enables manufacturers to produce fasteners efficiently, ensuring proper fit, superior quality, and reliable function in a wide range of industries and products. CNC Milling