Computer Numeric Control (CNC) machining is a perennially evolving craft with a variety of techniques and technologies. Among these, welding comprises an integral part. Two prime types that have gained popularity are Tungsten Inert Gas (TIG) welding and Metal Inert Gas (MIG) welding. This article seeks to effectively differentiate between TIG welders and MIG, demonstrate the application of chamfer and fillet in CNC machining, as well as focus on sheet metal fabrication.
Understanding TIG Welder Vs MIG
In the world of CNC machining, it’s crucial to comprehend the differences between TIG and MIG welders— choices usually rest upon material type, welding speed required, and positional capabilities of the tool.
1. TIG Welder: This technique uses a non-consumable tungsten electrode which delivers the current to the welding arc, with an inert gas protecting the weld area from atmospheric contamination. It covers a wide range of materials like titanium, nickel alloys, aluminum, etc., often used for intricate precision tasks due to its clean outputs.
2. MIG Welder: A wire feed system places a consumable wire electrode into the weld pool, fused by electric heating. An external shielding gas layer protects the molten weld pool. They work exceptionally well with steel, stainless steel, and aluminum, offering faster productivity because the filler metal is continuously fed.
Chamfer Vs Fillet in CNC Machining
Another aspect we encounter within CNC Machining involves design terms – Chamfer and Fillet.
A ‘Chamfer’ entails creating a beveled edge at the corner of a workpiece, enhancing load-bearing ability while reducing sharp edges. It’s grand at handling stress concentration points, preferred when connecting rod joints or bolts need space accommodating particular washers.
Contrarily, a ‘Fillet’ aims at substituting a sharp inside corner with an arc for increasing strength and reducing stress concentration. Employed in gears, assembled machine parts, bearing seats—it minimizes the effect of force over a broader area.
Annotating Sheet Metal Fabrication
Sheet metal fabrication is another crucial segment of CNC machining—procedure involving bending, cutting, shaping sheet metal into various geometric shapes for diverse applications like vehicle bodies, machinery, appliances, and more.
Several methods contribute to this process:
1. Cutting: applying shear stress creating desirable patterns or pieces.
2. Bending: modulating sheet metal along a straight axis.
3. Drawing: Forming flat sheet metals into 3D shapes.
Overarching both TIG welding (for fine precision work) and MIG welding (for rapid productivity), sheet metal fabrication also implements aesthetically pleasing chamfers and fillet designs for better load-bearing ability and reduced stress concentrations.
In conclusion, choosing between TIG and MIG welders rests on one’s specific requirements and material suitability. Similarly, designers need to balance between Chamfer and Fillet depending upon part functionality. When manipulating sheet metal structures, understanding these factors ensure efficient output in your CNC machining projects.
