Thoughts on machining this part.

[cunder]

I have an idea of what I would do for this part.

Just would like some other input.

Thanks in advance.

PUNCH.MCX-7

[crazy^millman]

I could throw 20 different things out there.

 

#1 What is the machining center you want to cut it on?

#2 What are the tolerances you need to hold on this part?

#3 Does it get heat treated? Do tolerances apply before or after heat treat?

#4 Does it have a mating part? What is the material this will be punching?

#5 What are the finishing requirements when done?

#6 What are the Datums or mating areas that the shape need to be located to?

 

Material today it really not a big deal to many people stress out about what you are cutting. I have cut so many different materials over the years I quite worrying about knowing the perfect speed and feed for each material. I still do not use Mastercam recommended speeds and feeds. I pick my tool manufacturer and then use their recommend speeds and feed always on the high side of the chart. Low side if for green horns. It breaks a tool slow it down. It is less than a rigid set-up slow it down. Any other time I speed it up and get the job done. Tools are expendable and not many people worry about saving a penny making tools last longer not realizing they are wasting hundreds of dollars in lost productivity. Hook up with a good tool vendor make up proven speeds and feed and save them in tool libraries, Next time that material comes up with that endmill you got a dialed in speed and feed. If I were cutting the same stuff day in and day out I would do like I use to have operation defaults that are dialed in for that machine for that material. Take a little bit of time, but if you are doing it along and along then life is good.

 

On last thing seeing how all the fillet radius are metric I would use Metric tools and not worry about having to keller or surface machine those fillets.

 

HTH and gives you some food for thought.

[cunder]

Part does get heat treated. Tolerances are not to tight. Square base end will locate in a pocket. pointed end punching through a window in a casting. Maybe cutting off a gate.

Part being cut on horizontal. I was planning milling and drilling end, then just 3d arced faces from each side.

[FROZEN]

what material A2???

[cunder]

S7

[FROZEN]

This is some roughing tool paths you still have to finish. the cutter I have luck with is a Kennametal vari mill part#HPHV750S4300CH

PUNCH.Z2G