How do you Improve cutting inserts life on turning?

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)
...
Check the insert seat

1. Oversized pockets due to wear. ...
2. No gaps in the corners between the shim and the bottom of the pocket are allowed.
3. Damaged shims.

1. How does cutting speed affect tool life?
2. Why is cutting speed important in turning process?
3. What is positive and negative inserts?
4. How is tool life calculation?
5. How can I improve my surface finish?
6. Which liquid improves the life of cutting tools?
7. Which of the following cutting parameters influences the tool life most?
8. What is cutting speed for turning?
9. What is the necessary condition for cutting?
10. Can I increase the cutting speed to increase the production rate?
11. How do I select a cutting tool?
12. Which tool material is hardest?

How does cutting speed affect tool life?

Cutting speed effects tool life greatly. Increasing cutting speed increases cutting temperature and results in shortening tool life. Cutting speed varies depending on the type and hardness of the work material. ... Increasing cutting speed by 20% decreases tool life to 1/2.

Why is cutting speed important in turning process?

Cutting speed refers to the speed at which the tool point of the cutter moves with respect to the work measured in feet per minute. ... Feeds and speeds affect the time to finish a cut, tool life, finish of the machined surface, and power required of the machine.

What is positive and negative inserts?

The term positive and negative rake inserts refers to the angle between the cutting edge relative to the machined surface. ... If the cutting edge is equipped wiht a chip braker, positive cutting can be obtained even though the tool's angle is negative.

How is tool life calculation?

The equation for Taylor's basic model is vC * Tm = CT, where vC is cutting speed, T is tool life, and m and CT are constants with CT representing the cutting speed that would result in a tool life of one minute.

How can I improve my surface finish?

The surface finish can often be improved by using a higher cutting speed. The insert geometry (neutral, positive and negative rake angles, as well as positive clearance angles) influences the surface finish. The selection of insert grade has some influence on surface finish.

Which liquid improves the life of cutting tools?

On top of these conventional options, the use of liquid nitrogen as cutting fluid to improve tool life and machining performance has been an on-going research (Shokrani et al., 2012).

Which of the following cutting parameters influences the tool life most?

The variation of tool life with different process parameters has been plotted. Feed rate has the most significant effect on tool life followed by spindle speed and depth of cut. published works on metal cutting has regarded these three parameters as having the greatest influence on tool wear and tool life.

What is cutting speed for turning?

Cutting speed is defined as the speed at which the work moves with respect to the tool (usually measured in feet per minute). Feed rate is defined as the distance the tool travels during one revolution of the part. Cutting speed and feed determines the surface finish, power requirements, and material removal rate.

What is the necessary condition for cutting?

Ideal conditions for cutting are short cutting time, long tool life, and high cutting accuracy. In order to obtain these conditions, selection of efficient cutting conditions and tools, based on work material, hardness, shape and machine capability is necessary.

Can I increase the cutting speed to increase the production rate?

In order to increase the material removal rate (MRR) the cutting speed should be as high as possible, so in order to improve the rate of production one will just increase the cutting speed keeping all the remaining parameters constant.

How do I select a cutting tool?

Things to consider before choosing the cutting tools

The selection of right cutting tools is based on the material to machine, power available on machine, fixture stability, machine dynamics which leads to the right selection of cutting tool material, grades, geometries, depth of cuts and the feeds.

Which tool material is hardest?

Diamond is the hardest cutting tool material.