Great CNC Related Articles: Reference • Standards

  • Diagram and Nomenclature Glossary of a Twist Drill

    Posted July 15, 2011 By admin

      DRILL – A rotary end cutting tool having one or more cutting lips and having one or more helical or straight flutes for the passage of chips and the admission of a cutting fluid. AXIS – The imaginary straight line which forms the longitudinal center line of the drill. BACK TAPER – A slight…continue reading

  • Parallel Port or DB25 Pinout

    Posted By admin

      DB-25 parallel connector pinout Pin # Function (standard mode) Direction 1 Strobe OUT 2 Data Bit 0 OUT 3 Data Bit 1 OUT 4 Data Bit 2 OUT 5 Data Bit 3 OUT 6 Data Bit 4 OUT 7 Data Bit 5 OUT 8 Data Bit 6 OUT 9 Data Bit 7 OUT 10…continue reading

  • Morse Taper Dimensions

    Posted By admin

      Morse Taper dimensions (mm) Morse Taper number Taper A B (max) C (max) D (max) E (max) F G H J K 0 19.212:1 9.045 56.5 59.5 10.5 6 4 1 3 3.9 1° 29′ 27″ 1 20.047:1 12.065 62 65.5 13.5 8.7 5 1.2 3.5 5.2 1° 25′ 43″ 2 20.020:1 17.780 75…continue reading

  • Geometric Dimensioning Reference Chart

    Posted July 6, 2011 By admin

    Type of tolerance Geometric characteristics Symbol Can be applied to a feature? Can be applied to a feature of size? Can affect virtual condition? Datum reference used? Can usemodifier? Can usemodifier? Can be affected by a bonus tolerance? Can be affected by a shift tolerance? Form Straightness Yes Yes Yes (note 1) No Yes (note…continue reading

  • RS232 Serial Port or DB9

    Posted June 25, 2011 By admin

    RS-232 Pinout RS-232 (EIA-232-A) Function DB-25 pin # DB-9 pin # Shield 1 Transmit Data (TD) from DTE to DCE 2 3 Receive Data (RD) from DCE to DTE 3 2 Request to Send (RTS) 4 7 Clear to Send (CTS) 5 8 DCE Ready (DSR) 6 6 Signal Ground (SG) 7 5 Received Line…continue reading

  • Nema Motor Frame Drawings and Dimensions

    Posted June 24, 2011 By admin

    Nema 34 Dimensional Drawing (Typical) Nema 23 Dimensional Drawing (Typical) Nema 17 Dimensional Drawing (Typical) Nema 14 Dimensional Drawing (Typical) Nema 11 Dimensional Drawing (Typical) Nema 8 Dimensional Drawing (Typical)