Hello,

I have a model of a part from my son's school, We are trying to create a OD roughing tool path by using the model but we keep getting a error message, We are using Mastercam X7 home learning software, Any body want to take a crack at creating a OD roughing tool path or fix the model so Mastercam can create a tool path?

Joel

Another note, They had Mastercam V9 when I started working there but all the computers broke (really old) most of us in the shop want mastercam design but I think they are leaning toward EZ mill but we are still pushing for Mastercam so right now we have no cadcam system in the shop

I haven't tried any of those suggestions, I am not familiar with those options, Let me explain what I am trying to do and maybe you will have a better idea than mine. I use a Mazak quick turn 250 mill/turn with no Y axis. I machine liquid pumping rings that look like acme threads, The current shop people us a hocus pocus math formula to determine the amount of spindle rotation based on the drawing information. I need to know the amount of spindle rotation exactly to make the pumping ring viens the right thickness per the print.

I thought if I draw up the correct diameter from the print and make a surface from that I could project the cutting path onto the surface and then go to the front view and measure the angle from the start to the end, then I could put that number in mazatrol for the program.

This ring is 10 starts and at a angle of 15 degrees, so 360/10=36 degrees so I have a tool path starting every 36 degrees but I need to figure out how far the spindle needs to rotate. the viens are 1 inch deep so my .25 endmill starts at -.15 in front of the part and travels .15 past the part for a total length in Z of 1.300 inches. but know I need the spindle rotation amount for that length of travel.

Any ideas on a simple way to figure this out?

And no they refuse to use Mastercam on the Mazak I already tried

Joel

Hello,

I am using Mastercam X7 home learning, I created a round surface 1.3 inches wide and at a diameter of 3.71 inches, I then created a line from the top quadrant that is at 15 degrees, I then tried to project the line onto the surface assuming it would go from 0 to 1.3 wrapping around the surface but it doesn't, the line goes to the 90 degree angle and goes back to the front, How can I make the line start at 0 and project onto the surface ending up at the 1.3 depth?

Thank you

Joel

The money is there, I suggested a coolant fed drill and a carbide one, he said he would get one of each and never did. He finally came in with his carbide drill and it work but that was after a week. He said I have 2 back up drills invade that one breaks so I looked at them and they are too short, I hope my current drill lasts 14 more parts.

I have said WTF alot.

I have been searching the internet for information on this but i have had no luck, seems most people change the g90 or g91 but we dont do that. back to searching

I suggested we use a carbide drill when we started this project but we used a cobalt drill, just a standard one, and we waisted a week and several feet of material until they bought the right drill. once we had the right drill it worked perfect from the first part and it still works now. i think the boos was under a lot of pressure and decided to get the right drill???

They have to adjust the machines for taper on the part, We machine alot of Titanium and they dont like us to go to Mastercam to fix programs. They want us to fix it on the machines.

We got a carbide drill and it is working perfect, thank you for all your input

My company likes to mix absolute and incremental Cnc programming, does any one know of a web page or iPhone app that will let me plug in some numbers and get the result? For example we have two lines at 90 deg and I need to put say a .250 radius on the intersection. Or does anyone have a good idea to do this ?

I suggested carbide but it falls on deaf ears. I cant buy the tooling so i am stuck, We are using a cobalt drill 19/64 and it walked off center last night, scrapped a few parts. The whole drill mounting system we have needs to be redone as i cant say anything is straight!

Thank you all for your help.

Joel

Thank you for the replies

We are doing .05 pecks with full retraction to get coolant on the drill

Sorry, it's a n drill .302 dia cobalt

Hello, I am trying to drill 3 inches deep in titanium. The drill keeps walking off center at the end. Maybe .01. Rpm 450,feed .002 per rev, cobalt drill, any ideas on how to get a straight hole?

I have the part machined! Thank you for all your inputs!!!!

Joel

I tried everything I could think of tonight, we just don't have the proper equiptment to machine this part

Thanks for the ideas, they are very set in their ways here. I am going to try again tonight but they want this to run as a production job.

Hello, I am trying to machine a 1 inch dia Ti bar in a Mori Seiki lathe, The issue is I have to use a boring bar to machine the center to .3385 dia, the OD is .3765 dia which leaves .019 a side wall thickness. the length is just over 2 inches. When i machine the part i get a big taper and the od comes out almost .02 oversize, the part is flexing, i have no center, no steady rest to work with just a spindle and a turret. I can up load the Mastercam file to the FTP server if you want as it has the geometry of what the part looks like.

I need help with this ASAp as i work nights and i am on the clock.

Thank you for your input.

Joel

I did get the surfacing done, one section at a time, took a couple of hours. We are going to x6 soon so maybe the surfacing is better?

Can't post or send out pictures of the screen

No solid it's wireframe

I have spent two days trying to figure this out and machines are waiting for programs.

Yea, models come in from the customer, we make the program and it goes on the machine as soon as we are done. Some guys here make a line in the center of a .047 wide groove and make the surface that way. The groove is not flat so I am using ruled surface but picking the geometry is what I am having problems with. So I need a way to simplify picking the geometry so I can create surfaces.