How Do CNC Tools Match New Market Needs?
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How Do CNC Tools Match New Market Needs?
As a practitioner in the CNC tools industry, you must know how to help customers reduce costs. If the tool has better durability, reduce the frequency of manual tool changes, if you can use no cutting fluid, dry machining is better, if you can adapt to automatic equipment production, etc., If the tool can meet as many of the above conditions as possible, the production cost of the customer’s product will be significantly reduced, and the customer’s market competitiveness will be stronger.
In recent years, such as communications products (die casting products, ceramic products), powder metallurgy products (including PM, MIM, etc.) under the 5G industry, carbon fiber composite materials, high temperature alloy products, car parts, etc. These types of products are a new challenge for CNC cutting tools. It is difficult for traditional CNC cutting tools to distinguish them efficiently.
First, let’s take a look at the current popular 5G products on the market:
There are many holes to be processed and tapped after die-casting of such products. If the original processing is used to process (drilling-reaming-tapping), it will cost a lot of tool change time, repeated positioning time, etc. .
At present, many CNC machining center machine tool factories have quickly made design changes for such products, such as increasing the tool-to-tool tool change time, increasing the spindle speed, and increasing the Z-axis travel. As for cutting tools, they can also be upgraded and changed. For example, can drilling and reaming be combined into an integrated drilling reamer?
If the Si content of die-casting aluminum is large, should it be changed to PCD type drill reamer? Of course, PCD drill reamers above D6 can be made with PCD sheet welding alloy. For example, if PCD drill reamers with smaller diameter (welded by sheet welding are easy to deform), can you consider using the following types of PCD rods?
I don't think much is used by tool manufacturers on the market. This may be a direction in the future (this is also a new challenge for PCD raw materials, such as rods with alloys in the middle and PCD layers on the periphery. The PCD raw material is a new demand, because the middle needs a tough alloy part, and the periphery needs a more wear-resistant PCD layer, just like why the commonly used U drill is also a middle blade, which has good toughness and a high wear resistance on the outer periphery. Similarly, for the same reason, similar to the CBN bar mentioned below, we cannot be limited to using only sheet as a super-hard tool (this is a new challenge for tool manufacturers and raw material factories).
Next, take a look at the powder metallurgy products (MIM) popular in the market in recent years:
For this new industry and new process type product (MIM), I also checked some relevant information. It is understood that the MIM process is a combination of traditional powder metallurgy technology and injection molding process, using metal powder and related binders to mix into particles, and then Through a series of processes such as sintering after injection molding, although the outer surface hardness of the final product is not very high (generally HRC25~45), the hardness of the particles inside is very high, and even some are as high as HRC60, so this is generally hard As far as alloy tools are concerned, their service life will certainly not be high, which is why many MIM powder metallurgy products use CBN tools for processing.
However, for the machining of MIM holes, this is a new challenge for CBN tools, because everyone knows that CBN toughness is not as high as cemented carbide, so I personally think that the outer layer of the alloy is a CBN rod with a CBN layer. It may be a new direction (especially hole cutters with a diameter of 6 or less, such as CBN sheet candle joint gold is easy to deform), in fact, like this type of foreign PCD tools, CBN tools have been used very commonly,
Finally, let’s take a look at the process and products of turning on the mill and milling on the mill:
Structural face milling cutters similar to the above are now commonly used, especially using aluminum alloy as the cutter body can increase the number of revolutions. Both PCD blades and CBN blades are used for blades, such as the commonly used PCD blades for processing aluminum castings. , Such as the commonly used CBN blades for processing cast iron, this type of products are mostly related to parts such as cylinder blocks and cylinder heads.
Like many hardened steel products and gear products, hard turning is used to replace the previous grinding process. This type of blade is commonly used for CBN turning blades.
In general, super-hard tool materials are still a new starting point in China and a type of product with a higher tool growth point in the future, whether it is for our tool manufacturers or for our super-hard raw material manufacturers. It is an opportunity for continuous improvement. Although we still have a certain gap with European and American knives in terms of cutting tools and super-hard raw materials, our cost performance is indeed much higher than that of European and American markets. This is why many foreign high-quality foreign trade The company still came to focus on the reason for a large amount of domestically estimated tools and raw materials for tools.
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