HOW TO SELECTION TOOLS CUTTING?

What is the diameter tolerance? (determines rough or finish head)

What is the finish diameter of the bore? (determines connection diameter)

Is the bore a thru-bore, or step bore design? (75° lead = thru bore / 90° lead = step bore)

What is the material to be machined?  (determines to insert code selection)

What is the machine spindle? (determines tool holder selection)

What is the finish depth of the bore? (determines length of shank & extensions)

What end of the spindle projection do you require? (determines length of shank & extensions)

Does the spindle have thru spindle coolant? Flood coolant? DIN “B”?
(if yes, calculate length of shank requirements)

What is the starting diameter of the bore?

What is the depth of cut requirement? Finish diameter – starting diameter / 2 = depth of cut  (determines insert tool nose radius selection)

Misc: Select coolant through spindle based on connection diameter and bore depth requirements (question #7 above)

 

Boring Tips

Speeds & Feeds
For best finish, generally, feed at 25% of nose radius.  Optimal speeds & feeds depend upon a material, machine, tool overhang and setup conditions.

Insert Corner Radius
For heavy roughing use the largest available corner radius unless otherwise specified.  For a finish, boring use the smallest corner radius to minimize lateral deflection, especially on long overhangs.

Boring Depth
Depths of 5x diameter for rough boring and 3x diameter for finish boring using carbide tooling are achievable.  At depths greater than that harmonic chatter and deflection may become a problem, causing you to adjust feeds & speeds.  Changes in the amount of side block extension may require adjustment of feeds & speeds. 

Depth of Cut
The depth of cut is a function of material and tool nose radius.  Generally, the ideal minimum diameter depth of cut is equal to the insert nose radius.  The maximum stock removal rate for rough boring may have to be decreased on very tough materials or extended overhangs and extended slide blocks.

Rough Boring 75° vs 90°
For maximum removal rates when a square shoulder is not required, use a 75° boring head.  The 75° head self-centers in the hole for a more stable cut.  However, if the hole is off-center or off-angle then use the 90° head because it will have less tendency to follow the existing hole.

Boring Bar Overhang 
The maximum boring depth for steel boring bars is 5x bar diameter.  For solid carbide bars 7x bar diameter.  To maximize boring efficiency we recommend the shortest possible overhang be used

 

Key to ordering boring heads by part number

 A 22 75 400

A = finish heads, D = rough heads (see question #1 above)
22 = connection diameter (see question #2 above)
75 = approach angle (see question #3 above)
400 = insert style of CT cartridge (see question #4 above)

Key to ordering toolholders by part number

 CT 330 22 100
CT = type of shank (see question #5 above)

330 = taper size (see question #5 above)
22 = connection diameter (match head connection)
100 = boring depth (BD) (see question #6 above)

Get Free Email Updates!

Signup now and receive an email once I publish new content.

I will never give away, trade or sell your email address. You can unsubscribe at any time.

1,027 thoughts on “HOW TO SELECTION TOOLS CUTTING?

  1. Autos says:

    Hello, you used to write wonderful, but the last several posts have been kinda boring… I miss your tremendous writings. Past several posts are just a bit out of track! come on!

  2. Travel says:

    Thank you, I have recently been looking for information approximately this subject for ages and yours is the best I’ve discovered so far. However, what in regards to the bottom line? Are you certain concerning the supply?

  3. FIFA Mobile 18 Cheats says:

    Thank you for publishing this awesome article. I’m a long time reader but I’ve never been compelled to leave a comment. I subscribed to your blog and shared this on my Twitter. Thanks again for a great post!

  4. Shopping says:

    I have learn several excellent stuff here. Certainly value bookmarking for revisiting. I wonder how a lot attempt you put to make this sort of excellent informative site.

  5. Health says:

    I like the valuable info you provide in your articles. I’ll bookmark your weblog and check again here frequently. I am quite sure I’ll learn plenty of new stuff right here! Best of luck for the next!

  6. Web Design says:

    I am extremely impressed with your writing skills and also with the layout on your blog. Is this a paid theme or did you modify it yourself? Anyway keep up the nice quality writing, it’s rare to see a great blog like this one these days..

  7. Legal says:

    I’ve read several good stuff here. Certainly worth bookmarking for revisiting. I surprise how so much attempt you set to make one of these fantastic informative web site.

  8. Education says:

    My brother recommended I might like this blog. He was entirely right. This post actually made my day. You can not imagine just how much time I had spent for this information! Thanks!

  9. Home Improvement says:

    What i don’t realize is if truth be told how you are no longer really a lot more smartly-preferred than you might be right now. You are very intelligent. You recognize therefore considerably on the subject of this matter, produced me for my part believe it from a lot of various angles. Its like men and women are not interested except it is one thing to do with Woman gaga! Your own stuffs outstanding. At all times maintain it up!

  10. Fashion says:

    great issues altogether, you just received a new reader. What could you recommend about your submit that you simply made a few days in the past? Any certain?

  11. Business News says:

    It¡¦s truly a nice and useful piece of information. I am satisfied that you shared this helpful info with us. Please keep us up to date like this. Thank you for sharing.

  12. projektowanie stron gorzow says:

    Hello, Neat post. There’s a problem along with your web site in internet explorer, would check this… IE still is the market leader and a good part of folks will leave out your wonderful writing because of this problem.

  13. Cum Tits says:

    Thank you for publishing this awesome article. I’m a long time reader but I’ve never been compelled to leave a comment. I subscribed to your blog and shared this on my Twitter. Thanks again for a great post!

  14. i thought about this says:

    I just want to mention I am new to blogging and site-building and actually liked you’re blog site. Likely I’m planning to bookmark your site . You amazingly come with impressive articles. Regards for sharing your web-site.

  15. agen bola terbaik says:

    Hands down, Apple’s app shop wins as a result of a mile. It’s a enormous decision of all forms of purposes vs a as an alternative sad conclusion of a handful for Zune. Microsoft consists of courses, primarily within just the realm of game titles, yet I am not of course I would need to have in direction of guess on the upcoming if this feature is sizeable to yourself. The iPod is a much improved selection inside of that situation.

  16. agen bola terbaik says:

    Fingers down, Apple’s application retailer wins by way of a mile. It is really a massive conclusion of all varieties of programs vs a in its place disappointed preference of a handful for Zune. Microsoft includes Strategies, especially inside of the realm of video games, nevertheless I’m not absolutely sure I’d need to have to guess on the long run if this characteristic is sizeable to on your own. The iPod is a a great deal improved choice within just that situation.

  17. agen bola terbesar says:

    This is getting a bit far more subjective, still I a lot want the Zune Current market. The interface is colorful, is made up of added flair, and some great characteristics like ‘Mixview’ that permit oneself instantly watch identical albums, music, or other end users equivalent in the direction of what you are listening to. Clicking upon a single of all those will centre upon that product, and a further fixed of “neighbors” will appear into watch, letting your self to navigate in excess of investigating through identical artists, new music, or users. Talking of end users, the Zune “Social” is on top of that suitable enjoyment, allowing for by yourself find many others with shared tastes and turning into pals with them. On your own then can pay attention to a playlist generated dependent upon an amalgamation of what all your close friends are listening toward, which is as well remarkable. These concerned with privateness will be relieved toward understand oneself can avoid the community against seeing your individual listening habits if yourself hence make a decision.

  18. Home says:

    I do consider all of the ideas you have introduced to your post. They are very convincing and will certainly work. Nonetheless, the posts are too quick for starters. Could you please lengthen them a little from next time? Thanks for the post.

  19. http://www.businessinboston.tk says:

    I and my pals appeared to be checking out the best things found on the website and immediately I got an awful feeling I had not expressed respect to the site owner for those tips. All the guys ended up so very interested to study all of them and already have seriously been taking advantage of them. Thank you for really being so accommodating and also for making a decision on some really good information most people are really wanting to understand about. Our own honest regret for not expressing gratitude to you earlier.

  20. businessinboston.ga says:

    I wanted to post a brief remark to thank you for those remarkable recommendations you are showing at this website. My extensive internet search has at the end been rewarded with incredibly good insight to go over with my visitors. I ‘d repeat that we visitors are undeniably endowed to be in a notable place with so many awesome professionals with beneficial ideas. I feel extremely privileged to have used your entire site and look forward to really more amazing minutes reading here. Thanks again for everything.