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镗杆广泛应用于孔加工中，是装配在钻头上的一种部件，用于在已经初步钻好的孔中拉孔，提高孔径精度。它们由实心柄和其中的冷却孔组成。如果…

We are aware of that surface roughness means a lot in manufacturing industry. When the concept is recalled to your mind, there must be some common textures on machined parts, such as bright mirror surface, matte, and dull polish. They…

Tool surface coating technology is a surface modification technology developed in response to market demand. Since its appearance in the 1960s, this technology has been widely used in the metal cutting tool manufacturing industry. Especially after the emergence of high-speed…

Cause of wear on Cutting tool include the following ones: Cutting tool materials Tool material is the fundamental factor to determine the cutting performance of the tool, which has a great influence on the machining efficiency, machining quality, machining cost…

Burr in metal processing is a common problem, such as drilling, turning, milling, plate cutting. One of the hazards of burrs is easy to be hurt. In order to remove burrs, a second operation called deburring is usually required. Three deburring…

If you ask, “What’s the difference between CNC machining and 3D printing?” The most straightforward answer: 3D printing is an augmentation technology, CNC machining is a reduction technology. 1. Material differences The main materials for 3D printing are liquid resin…

Deep-hole drills are often divided into external chip removal (also known as gun drill), internal chip removal (often abbreviated as BTA by the International Association of Deep-hole Drilling), nesting or spraying chip removal. This paper mainly introduces the development and…

The application of machine tool clamping system is conducive to ensuring the accuracy of workpiece processing and stabilizing product quality, improving labor productivity and reducing costs, improving workers’working conditions and ensuring product safety, expanding the scope of machine tool technology, and…

Most machinists are familiar with the four processing methods, but did you know the concrete differences between them? When the correct selection of them is done, A fast and highly accurate operation for your project will advantageously conduce to your productivity and…

After a long period of development in 1860, cutting fluid began to be widely used in vehicle, planer, grinding, gear processing and thread processing. With the development of cutting fluid, vegetable oil, edible oil, water and so on are gradually…

As shown in Figure 1. Usually, the use of abrasives for processing is called grinding machine. The commonly used grinding tools are consolidated grinding tools (such as grinding wheel, oil stone, etc.) and coated grinding tools (such as abrasive belt,…

The proper selection of cutting insert geometry is the up-most important factors during effective cutting. So pay attention, we are going to share you the most straightforward insight about cutting insert geometry, tool signatures based on a mold of the…

Wood drill bits are the main topic of this article. Plus, we will share some useful tips for efficiently drilling out satisfactory holes in wood. Before you put up a cabinet or shelf, we genuinely hope these tooltips herein we…

In mechanic engineering, machining tolerance refers to the amount of unplanned deviation between the nominal dimension and real dimension. All kinds of tolerances are affected by the presence of various reasons such as position error, incorrect relative rotation between workpiece…

Shown as the figure below, corner radius is formed by crossed line major cutting edge and side cutting edge, which is also named as edge radius. In the cutting process, in order to improve the tool tip strength and reduce…