Stiffness and Strength Analysis of Diamond Drill Bit

Diamond drill bit is the ideal cutting tool of nonferrous difficult-to-machine materials.

The electrode consumption of diamond electrode is small, compared with copper electrode. And it has many advantages, such as quick processing speed, good machining performance, high precision, small thermal deformation, light weight, easy surface treatment, high temperature resistant and high processing temperature. What’s more, its electrode can be bonded.

The structural parameters of drill bit (such as the thickness of the core, spiral angle, etc.), determines the stiffness and strength of diamond drill bit, which will significantly affect the durability of drill bit, lifting capacity and the cutting performance. A lot of scientific tests based on the processing properties of diamond materials shows that PARA cutting tool has optimized the geometric angles of related cutting tools, so that the cutting performance of tools is greatly improved as a whole.

In the design and selection of diamond drill bit, we need to reasonably determine these parameters, which are of great significance to improve the structure, the cutting performance and drilling efficiency of diamond drill bit.

The geometric angles of diamond coated cutting tools and common coated cutting tools have essential distinction. Therefore, when designing diamond coated cutting tools, its geometrical angles can be appropriately enlarged because of the particularity of graphite processing, and the cutting groove can also be bigger, which won't reduce abrasion resistance of the cutting tool edge. Cubic boron nitride (CBN), polycrystalline diamond (PCD), polycrystalline cubic boron nitride (PCBN), diamond saw and drill bit products are the representatives.