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2. ### Macro Programming Fundamentals

Hello Bill, Thanks for the example. I wasn't really referring to this site in particular but more in general. And not really to critique but just making sure my understanding is correct. For example regarding turning, perhaps compensation isn't necessary when turning complex curves for example...
3. ### Macro Programming Fundamentals

Examples of Macros for turning Sine curves, hyperbolas or similar shapes that I have come across do not include nose radius compensation in the programs, wouldn’t this result in the wrong shape being cut? Also, macros for profiling radii with a endmill seems to have the calculations down...
4. ### Arc lead in thread milling.

I haven't tried this out yet, but it turns out there were nothing wrong. The machine showed the coordinates for the cutters center, and in order for the cutter to place itself tangent to the radius 8.5° from centerline, it had to move away from X0. And so this point of tangency while at 98.5 for...
5. ### Arc lead in thread milling.

Hello Bill, We misunderstand each other. Your drawing is actually what I wanted to represent in my sketch. The blue line represent the centre of the lead in arc. Anyway, yes, the issue is that I know I'm programming a 98.5° arc, so my code is as intended. But the machine ignores that and...
6. ### Arc lead in thread milling.

I’m sorry for not explaining it well, I’ll try your idea but I’ll try explaining it better. The green circles represents thread minor and major diameter. Purple circle is the arc which is used to enter the cut. Blue line represents this circles center point. The center of this circle is offset...
7. ### Arc lead in thread milling.

Hello Sinha, Here is an example. Thread Pitch = 1.5 Thread M18x1.5 Inner diameter 16.5. X = 9 Y = 0.5 (16.5/2-0.5) I program from the center of the big circle so that I can easily calculate 1.5/4 for Z lead movement, so the Arc Lead in is more than 90•, however it automatically wants to...
8. ### Arc lead in thread milling.

I asked over at the Mazak forum but I didn't get many replies so thought I'd ask here. I programmed an arc lead in 90° into a thread milling cut, climb milling from the bottom of the hole, but the machine chooses to start 90° from the final position of the lead in arc, instead of the programmed...
9. ### Thread milling manual program problem

Yeah. I'll look into those. But I use a manual unit in Mazatrol, perhaps the manual unit works under different rules than EIA too.. I'll try that next time. However it didn't really matter much for the application, I calculated the angle from the radius center in relation to the thread diameter...
10. ### Thread milling manual program problem

I figured it out.. or somewhat. The machine wants to go to the center of the infeed radius, that is -1.16 in Y, however for whatever reason, probably parameter related, it shows the position of the cutters center in relation to this position. And if you calculate the radius - cutter radius and...
11. ### Thread milling manual program problem

So I have programmed a Manual unit for thread milling, we start at the bottom of the hole and climb Mill from there with G91. The thread is M18x1.5. It is done with a 90 degree infeed radius into the material. The tool is a carbide thread mill with diameter 7.5. taking full depth in one pass. I...
12. ### Stellite 6B

I'm aware it's difficult to work with but as to how difficult I don't know. We have never worked with it before so we are not sure if we can cut it with the saw even or if a special cutting blade is necessary? Maybe some standard blade used for stainless steel will be good enough? We are...
13. ### Bore large bosses

This looks very promising. Thanks. Interesting that they mention balancing weight as a main selling point, I brought this up in shop that it should fix some of the problems we are experiencing with our current tools but was told it wasn't even worth trying.
14. ### Bore large bosses

Usually for precision bosses, mainly for trunnion mounts for hydraulic cylinders, we bore them with a boring head with the bar faced inwards. The method is decent but results in out of round bosses and less than desired finish. The bigger diameter the more problematic it is as rigidity gets...
15. ### Thread milling form error

Sorry, I edited my post now. For internal threads that is.
16. ### Thread milling form error

Hi, Apparently thread milling with a tool bigger than approx 70% of a thread will introduce a form error on the thread profile, near the root of it from what I understand. On an internal thread that is. Can someone explain to me why this error occurs and is the error relevant at all in...
17. ### Oscillating C axis when clamped.

It’s certainly worth a try of course, I have never done it before but I will look into it and let you know how it goes. In some ways I hope it isn’t that simple since I’d lose all hope in the tech guys then.. If I haven’t already. Recently they tried to bill the company 10K\$ for ’trying’ to fix...
18. ### Machined radii's strength

Allright, thanks guys.
19. ### Oscillating C axis when clamped.

I follow. Not on the DROOP thing though, I'm completely lost as for what you are talking about there. I did a quick check today.. and I found it difficult to connect the issue to one specific 'mode'. The operator was finished with his workpiece and had taken it out, the machine was in M210...
20. ### Oscillating C axis when clamped.

I would believe I'm talking about M210, the breaks being clamped. Typically when we bore a critical hole, we go to manual mode, and then into C-axis menu and switch softkey 'locked' to 'unlocked', then go over to auto mode and continue the cut from there. This causes the vibrations to...