Hey all.
I'm attempting to thread M64x6 threads on my QT15n T32B using top notch NT4R widia 6025 coating.
Material is 4150 prehard.
I stalled the spindle at both 160sfm and 200sfm .004 DOC. I am a little stumped as to where to go from here. It looked like it was taking a large width chip when the spindle stalled. Would a lower SFM help this because it lowers the feed?
There is the option for constant area threading, but I do not know much about it. I looked at the verification and seemed like it was going to take 100 passes Maybe someone could enlighten me on this.
Side question.
I have another part that gets a 10-24 thread with a .031 max undercut/relief before the shoulder. I thought you need at least the distance of one pitch to ensure a good last thread. I probably misunderstood what that meant. I also couldn't find a top notch that would thread that close to a shoulder. I looked at ER11 size lay down inserts and it only gets .04" away from the shoulder.
I'm still a bit new to threading, so I appreciate the help
Tyler
I'm attempting to thread M64x6 threads on my QT15n T32B using top notch NT4R widia 6025 coating.
Material is 4150 prehard.
I stalled the spindle at both 160sfm and 200sfm .004 DOC. I am a little stumped as to where to go from here. It looked like it was taking a large width chip when the spindle stalled. Would a lower SFM help this because it lowers the feed?
There is the option for constant area threading, but I do not know much about it. I looked at the verification and seemed like it was going to take 100 passes Maybe someone could enlighten me on this.
Side question.
I have another part that gets a 10-24 thread with a .031 max undercut/relief before the shoulder. I thought you need at least the distance of one pitch to ensure a good last thread. I probably misunderstood what that meant. I also couldn't find a top notch that would thread that close to a shoulder. I looked at ER11 size lay down inserts and it only gets .04" away from the shoulder.
I'm still a bit new to threading, so I appreciate the help
Tyler
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