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Tool Body and Insert Selection for Advent Tools
- Select the thread form you desire to thread mill (1.5" - 12UN internal, 1.1" deep).
- Choose the tool body that will cut the thread form you need based on your spindle tooling capacity, length from gage line and/or overall setup rigidity. Assuming all are good, choose tool #15-TA-01-F5. This tool utilizes ATM-410A Class Inserts. See this LINK for details on how our bodies are numbered.
- Check the diameter of tool with inserts. This depends on the thread form of the insert.
- The "Standard" cutter diameter is applicable when the insert is between 10UN - 32UN, and M1,0 - M2,75.
- The "Oversize" cutter diameter are pitches between 4UN - 9UN, and all NPT, and BSPT forms measured at the major diameter.
- Cutter diameters for specialized forms such as ACME, and Stub ACME should be checked with Advent Tool's technical department. (12UN is a "standard" diameter form. The cutter diameter in this case is 1.22").
- Compare the proper diameter of the tool with minor diameter of thread, or drill size. The cutter diameter must not exceed minor diameter of thread, or drill size (1.5" - 12UN minor diameter = 1.41"). Keeping Step 2 in mind, keep an eye on the rigidity of the spindle. Can your spindle take more than one flute in the cut at a given time? Some can and some cannot. This is why a smaller tool might be suitable for the application.
- Find the insert style that fits body chosen. Order the insert by applying form to insert style (insert #ATM-410A12). See the following LINK for details on how our inserts are numbered.
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