An Overview of Different Types of Fasteners for CNC Machining--cncmass.com(chamfer the edges Cliff)
- source:CLAREY CNC Machining
CNC (Computer Numerical Control) machining revolutionized the manufacturing industry, providing precision and efficiency in producing various products and components. One crucial aspect of CNC machining is the use of fasteners. Fasteners are essential elements that hold objects together securely and allow for easy maintenance and repairs. In this article, we will explore the different types of fasteners commonly used in CNC machining and their significance.
Screws are widely employed in CNC machining due to their versatility. They consist of a cylindrical shaft with an external thread, allowing them to exert pressure when rotated into a corresponding internally threaded object such as a nut or tapped hole. With numerous variations available, they offer flexibility based on application requirements. Screws can be broadly categorized into machine screws, wood screws, self-tapping screws, and set screws.
Bolts are similar to screws but differ primarily in their usage. Unlike screws, bolts require a separate nut to secure two or more components. Bolts typically have a fully threaded shank and a larger head designed for increased tensioning capabilities. Just like screws, bolts come in various forms like hex bolts, carriage bolts, eye bolts, and shoulder bolts, each catering to specific needs.
Nuts complement bolts by offering a means to hold them tightly and prevent loosening. These small yet vital components must match the specifications of their corresponding bolts to ensure compatibility. Some common types include hex nuts, lock nuts, wing nuts, cap nuts, and flange nuts. Each variety serves different purposes depending on factors like vibration resistance, installation ease, and load-bearing capacity.
Washers act as protective layers between fastener heads, nuts, or other joint surfaces. They distribute pressure evenly, preventing damage and ensuring proper connections. Split washers or spring washers are commonly used to prevent loosening caused by vibrations. Flat washers, on the other hand, act as spacers, provide stability, and increase surface area.
Rivets are permanent fasteners typically used when welding or screwing is not feasible. They consist of a smooth cylindrical shaft with a head at one end that expands or deforms after installation. Rivets create strong joints by joining multiple components together permanently. Common types include solid rivets, blind rivets, and tubular rivets, each serving specific requirements based on strength, accessibility, and appearance.
6. Clips and Clamps:
These fasteners serve temporary or frequent assembly/disassembly purposes while retaining stability. Clips and clamps hold objects together without damaging the material. Spring clips, hose clamps, and retaining rings are some examples commonly used in CNC machining, often enabling easy disengagement during maintenance procedures.
7. Dowel Pins:
Dowel pins assist in precise alignment between two components, ensuring accurate positioning before final tightening using screws or bolts. These cylindrical pins feature chamfered ends that fit within corresponding drilled holes, providing added stability and support. Dowel pins come in various sizes, materials, and configurations to meet specific tolerance requirements.
Fasteners play an integral role in CNC machining processes, enabling secure connections and maintaining structural integrity. Understanding the different types of fasteners available helps manufacturers choose the appropriate solution for their specific applications. By selecting the right type of fastener, engineers can optimize the reliability, functionality, and durability of products produced through CNC machining. CNC Milling