Cutting insert tool life

I have to start right here with using the right feeds and speeds. There are a lot of ways to go wrong with Feeds and Speeds, even for experienced machinists:.

But, a good Feeds and Speeds Calculator will tell you how much deflection your cut parameters will generate. A great one will help you optimize your cut parameters within deflection limits. I tell everyone I can to be paranoid about recutting chips. Make sure the coolant is set up to get rid of them. Use mist for those machines as the dribble just covers up the chips sitting in the cut so you can no longer see them.

Some materials have an affinity for what cutters are made of and they will weld chips onto the cutting edge which quickly results in a broken cutter. Aluminum is one such, but there are a lot of others. Look up the material and if it is prone to chip welding, you need lubrication.

You can get it from flood coolant, mist coolant, or some tool coatings. What you can do is machine materials prone to chip welding with lubrication. A slight reduction in surface speed can yield big dividends for tool life.

Surface speed is all about how hot the tool can run and reducing it lowers the heat. Heat softens the cutting edge which means it dulls faster. You can see why reducing heat even a little can really increase tool life substantially. G-Wizard Calculator has the ability on every machine profile to specify a multiplier for the calculated surface speed. What that will do is reduce both the Surface Speed and the chip loads, although it reduces chip load the most.

A lot of cutter wear starts on entry to the cut. You may even chip the edge there, especially in tough work-hardening materials. The solution to this problem is to adopt gentler entries. Avoid plunging the cutter. Instead, use one of these strategies:. We talk about all this and more in our Toolpath Considerations article from our Feeds and Speeds Cookbook. The other reason to check out that toolpath article is that how you exit the cut matters too for tool life.

Are you roughing with the same endmill you will use for finishing? Are you looking for tool recommendations? Find our cutting tools here. Need advice? Ask us a question. Want to learn more about the metal cutting basics? Register for our free e-learning programme. Cosa vuoi fare oggi? Aggiungi a "I miei cataloghi" Vai a "I miei cataloghi". About Sandvik Coromant Ask us a question. Join us. Stay updated. Sign up for our newsletter today. You must be logged in to post a comment. Flank wear, Tool life.

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How to do turning in different materials. Related information How to choose the infeed method Knowledge. How to do turning in different materials Knowledge. How to apply coolant and cutting fluid in turning Knowledge. How to achieve good component quality in turning Knowledge. For best turning tool life: Reduce cutting speed, v c to reduce heat Optimize feed, f n for shortest cutting time Optimize depth of cut, a p to reduce the number of cuts. Cutting speed, v c , has a significant effect on tool life.

Adjust v c for best economy v c. Tool life on Y-axis. Feed, f n , has less effect on tool life than v c. Depth of cut, a p , has a small effect on tool life. Torque wrench To get the best performance out of screw-clamp tool holders, a torque wrench should be used to correctly tighten the insert.