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30 maj 2012 · Cutting a multi-start thread is relatively easy. Some controls have an address function to index the thread for the 2nd and any successive leads of the thread being cut, as indicated by cadcamwiz, but what works on all controls is to shift the start point of the threading tool by a distance equal to the thread lead divided by the number of starts.
Machining a double lead, 11 pitch Acme thread out of a bronze alloy using a Proto Trak SLX CNC lathe.
2 paź 2017 · I can cut double-start threads by using a leadscrew with a pitch of 2mm, triple-start threads with a leadscrew of 3mm, and quad-start threads with a 4mm lead screw.
18 maj 2017 · The cutting tool used to mill the thread must have a relief angle greater than the lead angle of the thread for clearance purposes. All Harvey Tool Single Form Thread Milling Cutters can mill a single, double, and triple start thread without interference.
20 wrz 2014 · Since it's a 2-Start thread, you need to change the lead to 2 x Pitch. When both starts are cut you get the correct pitch between starts. The rule of thumb I use with any kind of ACME or API thread is at least 4 x Lead for the run-in distance
17 sty 2022 · Here's a quick how-to for cutting multi-start threads, including using the threading dial, the compound, and the spindle gear. I also discuss how multi start threads are used in the real...
3 paź 2020 · Joined. Oct 3, 2020. Messages. 80. Jan 11, 2021. #1. Now that I got my threading situation figured out..... I’d like to try my hand at some acme threads. I understand that the tooling is different and that there are standard and metric varieties.
