CNC BLOG

1 min read

What is the difference between helical and spiral interpolation?

I was reading your section on thread milling, and parametric programing and noticed that it said there was a difference. Thank you, Hal...

1,056 views0 comments

What are the benefits of constant surface speed?

Mike Lynch

6 min read

What are the benefits of constant surface speed?

We are a small machine shop located in Ohio. I had read an article sometime back in your newsletter on this subject but I cannot remember...

1,445 views0 comments

Mike Lynch

2 min read

Why can't I load all programs from one file?

Hello Mike. We are trying to call up our programs from a PC-DNC in my office to the control out in the shop. We are using a Fanuc 6M...

50 views0 comments

Mike Lynch

4 min read

How can I confirm that the right pallet is in position?

We have (4) Mori Seiki SH-630 Horizontal Machining Centers. They have Fanuc-type controls (model MSC-502) on them. The question I have is...

1,985 views0 comments

Mike Lynch

3 min read

How can I assign more than six program zero points on Fanuc controlled machining centers?

I would like information on creating more than 6 work offsets on the older Seiki (Fanuc compatible) controls. Any ideas how to reuse or...

433 views0 comments

Mike Lynch

4 min read

How do you decide between conversational (shop floor) programming and programming off line?

We are getting a new MAZAK vertical and I am wondering if we should switch from manual G code programming to Mazatrol. Our parts are...

119 views0 comments

Mike Lynch

2 min read

What is the difference between mean, nominal, and target dimensions?

Could you please give me an example of programming a lathe using mean vs. nominal one that would include a couple of different diameters...

12,572 views0 comments

How is G50 used to assign program zero on turning centers?

Mike Lynch

5 min read

How is G50 used to assign program zero on turning centers?

I am a CNC operator who recently took a job teaching entry level CNC. Some of the machines here at the training center are pretty old -...

4,837 views0 comments

Mike Lynch

2 min read

A Custom Macro math question

I can perform a square-root operation such as #100=SQRT[9] which of course sets the #100 to 3. However I can't for the life of me figure...

472 views0 comments

Mike Lynch

3 min read

How does G61 work?

Can you explain the use of G61 for machining centers and turning centers? Thank you, Art. Response: Art, For Fanuc and Fanuc-compatible...

7,069 views0 comments

Mike Lynch

2 min read

What is the difference between the Absolute, Relative, & Machine display screen pages on FANUC CNCs

Can you please explain the differences? Response: These coordinate systems provide three different ways to track the machine's movements....

23,333 views1 comment

Mike Lynch

2 min read

Documenting CNC Programs

by Bernadette Henderson of Specialty Machine Products I have been programing for about 2 years, and before that I had been a manual...

135 views0 comments

Mike Lynch

3 min read

Safe Index Position For CNC Machining Centers

by Steve Wood, Laconia, N.H. I recently encountered your web site and have been reading the material therein. Eventually I encountered...

233 views0 comments

Impact of rapid motion on program execution time

Mike Lynch

2 min read

Impact of rapid motion on program execution time

CNC Programmers have the tendency to ignore the effects of rapid motions on cycle time because of the very fast rate of motion. While...

68 views0 comments

Mike Lynch

3 min read

Which mode is better, inch or metric?

Most companies work exclusively in one mode or the other. If the bulk of their prints are dimensioned in inch (as with most companies in...

45 views0 comments

Mike Lynch

3 min read

Using Custom Macro to streamline tool length measurements

This rather advanced technique assumes your control has parametric programming (example shown in custom macro B). If you have this...

327 views0 comments

Mike Lynch

1 min read

When should you tap?

Tapping tends to be the most error prone and frustrating operation a machining center performs. Depending upon the tap style, the...

26 views0 comments

Mike Lynch

1 min read

A taper thread milling Custom Macro

by Mitchell Callan of Fuller precision Inc. I have written a macro that machines a taper thread with a single point thread milling...

1,786 views0 comments

Mike Lynch

2 min read

A letter engraving custom macro

by Bruce Litton Here is a letter engraving program that will engrave the letters A-Z (any size) for any Fanuc or Fanuc compatible control...

18,045 views0 comments

When is a 5 axis machining center required?

Mike Lynch

2 min read

When is a 5 axis machining center required?

Though I don't want to over-simplify this sophisticated type of equipment, there are only two types of five axis machining applications...

62 views0 comments

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