Mike Lynch1 minWhich measurement system is initialized at power-up?Actually, the choice between whether the Imperial measurement system or the Metric measurement system is initialized can be done on the S...
Mike Lynch2 minHow does G66 work? G66 is one of the more misunderstood custom macro B commands. Fanuc calls it a modal custom macro call. It looks just like a G65 command....
Mike Lynch3 minWhat are directional vectors? Current model CNC controls make it easy to create circular commands. You simply specify the direction (G02: clockwise or G03: counter clo...
Mike Lynch1 minHow do you switch from OD to ID chucking on a turning center? How would you go about programming I.D. chucking on a Fortune V-turn 26 with Fanuc 18 since there is not a physical switch to change from...
Mike Lynch3 minWhat are the differences between manual, conversational, and CAM system programming? I was wondering if there is any difference between NC programming and conversational. One of my co-workers says NC is more accurate and f...
Mike Lynch1 minCan I change the retract between pecks of a G73 cycle? I would like to know if there is a way to change the value of the rapid clearance of .100 between pecks in the chip-break peck-drilling c...
Mike Lynch1 minWhat 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 L...
Mike Lynch6 minWhat 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...
Mike Lynch2 minWhy 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 cont...
Mike Lynch4 minHow 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...
Mike Lynch3 minHow 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 c...
Mike Lynch4 minHow 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 most...
Mike Lynch2 minWhat 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 w...
Mike Lynch5 minHow 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 - a...
Mike Lynch2 minA Custom Macro math questionI 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 ...
Mike Lynch3 minHow 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 c...
Mike Lynch2 minWhat is the difference between the Absolute, Relative, & Machine display screen pages on FANUC CNCsCan you please explain the differences? Response: These coordinate systems provide three different ways to track the machine's movements....
Mike Lynch3 minWhich 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 ...
Mike Lynch1 minWhen should you tap? Tapping tends to be the most error prone and frustrating operation a machining center performs. Depending upon the tap style, the materia...
Mike Lynch2 minWhen 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 (...
