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    4" Rotary TableP/N 3700Sherline Products’ rotary table is 4" (100mm) in diameter and has been designed to be used in conjunction with their vertical mills; however, it can be easily adapted to any equipment where size and configuration would make it useful. It has a worm ratio of 72-...

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    INSIDE SEGMENTCUTTER ALLOWANCE IN DEGREESFOR EACH SIDE = CA°CA° = C ÷ 2 1° CIR.TOTAL DEGREES MOVEMENT = A° - 2CA°table can be very trying because the work has to be clamped into position. When you consider the fact that the part turns, a .001" (.03mm) error in location...

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    Figures 3 and 4 show the relation of cutter and part. Start considering what I refer to as CPR, which is where the center of the cutter is from the center of the rotary table.FIGURE 3—Cutter machining outside of part.FIGURE 4—Cutter machining inside of part.Sherline now offers adjustable “z...

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    will be cut every 90°; therefore, a lot of confusion can be eliminated if you start with your table at 0° (see Figure 8). The center of the spokes will now lay out at 0°, 90°, 180°, and 270°, and the halfway point will be at 45°, 135° etc. Allowance for the cutter was taken care of when ...

  • Page 5

    you are replacing for a shape reference to grind the tip of the cutter. The corners on a bench grinder wheel are used to generate the shape on the tool blank. At first it may seem almost impossible to do this, but it is not. Just keep checking the tool to a gear that can be used for a gauge by ...

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    FOURTHCUT360° x 3 = 37.24137931° 29 35° + 2.2413° = 37.2413°FIGURE 10—Degree calculations and handwheel settings for making the first four cuts on a 29-tooth gear.The reason you should divide and then multiply each time is if you “rounded off” on the firs...

  • Page 7

    Range of Cutters CUTTER # CUTS GEARS FROM 1 135 Teeth to rack 2 55 to 134 3 35 to 54 4 26 to 34 5 21 to 25 6 17 to 20 7 14 to 16 8 12 to 13Gear Cutter ArborsRound gear cutters like the ones described above can be held on Sherline tools using Sherline’s mill cutter arbor...

  • Page 8

    -8-REF # PART # DESCRIPTION 1 10930 3/8" Bearing 2 30560 T-nuts, 10-32 T-nuts 3 31080 Set Screw, 10-32 X 3/8" 4 35580 Hold Down Clamp 5 37090 Chuck Adaptor 6 37100 Rotary Table Base 7 37110 Table 8 37120 Worm Housing 9 37130 Worm Gear 10 37150 Oiler 11 37160 Preload Nut 12 3...

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