A poorly machined hole can compromise an entire precision component. On an engineering drawing, callouts such as Ø8 ↧20, M8 × 1.25-6H ↧15, ⌴Ø15 ↧9, and Ø10H7 may look similar, but they specify different hole features and machining requirements. This guide explains the five essential hole-making operations, their machining principles, and the correct hole machining process order.Drilling vs Tapping...

If you work with inch-based screw threads, you will eventually run into UNS. Most people learn UNC and UNF first because those are the standard coarse and fine unified threads. UNS sits in the same unified thread family but fills a gap for special diameter-and-pitch combinations that do not fit the fixed TPI rules of UNC, UNF, or UNEF. This guide breaks down the UNS thread, including its meaning, ...

The basic steps of CNC lathe processing parts. CNC lathe is the abbreviation of digital program control lathe. It combines the characteristics of a universal lathe with good versatility, a precision lathe with high processing accuracy and a special-purpose ordinary lathe with high processing efficiency. It is the most widely used machine tool with the widest coverage. The automatic numerical contr...

Tapping is a common and useful manufacturing technique for threads of the workpiece, in this article, we’ll introduce what is tapping and its tool, learn about programming of tapping on CNC lathe and how to tap on a lathe, as well as the difference between tapping and threading. Related Read: Drill Tap Sizes ChartWhat is Tapping Process?Tapping in manufacturing is the process of cutting a thr...

Drilling is a process of producing a hole while tapping is a technique used to cut a thread inside a hole, so the drill bit and tapping tool are often used in sequential to fabricate CNC parts with thread holes. When it comes to the selection of drill bit sizes and tap sizes, there are standard drill and tap size chart for reference. What is the Drill and Tap Size Chart and Why to Use Them?Wh...

Threading is an important manufacturing technique for fasteners, there are many types of screw threads fabricated by CNC machining. Here we’ll introduce two typical threads with different pitch: UNF threads and UNC threads, what are the applications and difference between UNF and UNC Thread.What are UNF Threads and UNC Threads?UNF and UNC are two symbols of the Unified Screw Thread Series, which i...

When a CNC lathe has been used for a period time, the contacting parts will start to wear out or damage, the daily maintenance of CNC machines and scheduled maintenance can extend the service life of the machine components and wear cycle of mechanical parts, to prevent the occurrence of unexpected and malignant accidents, ensure the stable and efficient work and production, also fully exerts the a...

Lathe machine is versatile in metalworking and usually used to cut the cylindrical workpiece, for producing specific CNC lathe parts, what are the parts of a lathe machine and their functions? The basic mechanism and functional tools combined to perform various operations. What is a Lathe?Lathe is a kind of machine which mainly uses turning tools to cut the rotating workpiece and remove exces...

Runout is an important term in GD&T for circular parts, what is runout and how total runout tolerance applied? The article also shows how to measure or check lathe runout. What is Runout?Runout (Run-out) is the error of rotating mechanical system, especially the rotation direction of tool or shaft is not completely consistent with the main axis, its often applied to assembled parts with c...

Cylindricity is important in the measurement of cylindrical machined parts, it’s a geometric tolerance that controls all the points on the entire surface of the cylindrical feature. Cylindricity tolerance can be applied to manage the manufacturing cost. Then how to measure cylindricity? Both are categorized as no datum feature and concerns circular elements, what’s the difference between circulari...