This example and others sometimes require calculating Stub Acme thread dims instead of simply looking them up. int_note:=int_note . clipboard:=ext_note GuiControlGet, nom_diameter , , nom_diameter Gages for Stub Acme Threads: major_d_min:=major_d_max-.05*pitch Engineering Calculators Gui, show, , Stub Acme Note Generator The forumlas shown could also be used by anyone else that needs Stub Acme dimensions for … input_space:=70 Training Online Engineering In case of a lateral force, external and internal threads contact each other at the major diameter of the thread. ASME/ANSI B1.8-1988, Stub Acme Screw Threads.

mechanical or metallurgical reasons. } minor_d_max:=minor_d_min+.05*pitch a female thread.

“MAJORØ ” major_d_max “/” major_d_min “`n” E. , Jones ,F.D.

| Contact | Privacy Policy, Home Oberg, When created prior to 1895, Acme screw threads were intended to replace square threads and a variety of threads of other forms used chiefly for the purpose of traversing motion on machines, tools, etc. return, a_get_ext_note(nom_diameter, TPI){ ASME/ANSI B1.8-1988 (R2001) provides for the Stub Acme screw thread for those diameter of a thread which is diameter of the crest of a male thread or root of

Acme threaded rod. pdt:=.006*sqrt(nom_diameter)+.03*sqrt(1/TPI) pitch_d_min:=pitch_d_max-pdt This ACME Thread General Purpose Design Calculator will determine the three classes of General Purpose, 2G, 3G, and 4G, for the external and internal threads. Oberg, E. , Jones centralizing acme threads. col3_table4:=.008*sqrt(major_d_max) When design requirements necessitate use of a lesser or greater thread height, the data should be obtained from the Appendix of the ASME / ANSI B1.8-1988. /Subtype /Image Gui, Add, Text, xm w250 vsa_get_ext_note, % sa_get_ext_note(nom_diameter, TPI) Allowances, Tolerances, and Clearances for Stub Acme Threads text_space:=80

Engineering Information, Conversions and Calculations. GuiControlGet, TPI , , TPI

“MAJORØ ” major_d_min “/” major_d_max Multi Start Acme Thread: Provides fast In application, it is suggested that external and internal threads of the same class be used together for general purpose assemblies, Class 2G being the preferred choice.

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