To go back to Pro/Calc page, click here.
- Press PWR to turn unit on and off. The unit will automatically power-off if it has not been used for approximately five minutes. The display also indicates "low battery" and any unusual display will indicate that the battery needs to be replaced. If the replaced battery does not correct the problem, contact your dealer.
- There are four programmed menus that can be accessed by pressing the PAGE button. The menu choices are:
- MATERIAL SELECTION CALCULATIONS
- FEED RATE CALCULATIONS
- TAPPING NATIONAL COARSE
- TAPPING NATIONAL FINE
For Calculations based on MATERIAL SELECTION:
- Press the PAGE button until you see SFM in the top left corner of the display. Then press either of the MATERIAL SELECTION arrows. The 34 programmed materials will be displayed in the bottom left corner in alpha-numerical order. By pressing either arrow, the material selection will change. (Hold down the arrow button
and the material selection will rapidly advance). NOTE: An asterisk (*) after the chosen material designates this material as the HEATED TREATED form.
If you have chosen a heat treated material, see NOTES for Heat Treated Material elsewhere on this page.
- Begin by scrolling to the desired material (or most similar to it) and then press the MACHINE OPERATION button to select the operation you wish to perform.
The eight choices of operations are listed here:
CBORE = Counter Boring . . . . . . . . FCUT = Fly Cut or Face Mill
COFT = Cut off and Forming . . . . . .REAM
DRILL . . . . . . . . . . . . . . . . . . . . . . . . TAP
EMIL = End Milling . . . . . . . . . . . . . . TURN = Lathe
- Once the operation has been selected, move to the TOOL DIAMETER arrows. Press the UP or DOWN arrows and select the diameter of the cutting tool being used.
The recommended RPM will be displayed in the top right corner. NOTE: To calculate the RPM for stationary tool operations, such as Turning, C/O, forming, etc.,
enter the diameter of the PART.
- RPM and surface foot calculations for turning, fly cutting or face milling are based on using CARBIDE cutting tools.
- All other resulting calculations are based on using HIGH SPEED cutting tools except, if you have chosen a heat-treated material, (designated
by an asterisk).
- By pressing the IN/MM button, all information will toggle between inch and metric ratings.
- If face milling with high speed cutting tools, enter the operation as EMIL instead of FCUT.
NOTES FOR *HEAT TREATED MATERIALS:
- The resulting calculations, for the operations of cutoff & forming, end milling, tapping and drilling of heat-treated materials, are based on using HSS/Cobalt tooling.
If you are using carbide tooling for these operations, you can convert the resulting RPM by MULTIPLYING BY 3 for a safe approximate value.
- The resulting calculations, for the operations of turning, fly cutting, face milling, reaming and counter boring of heat-treated materials, are based on using
CarbideTooling. If you are using HSS/Cobalt tooling for these operations, you can convert the resulting RPM by DIVIDING BY 3 for a safe approximate value.
For FEED RATE & CHIP LOAD CALCULATIONS OF REVOLVNG CUTTERS:
- After the above directions for material selection have been made, press the PAGE button until you see FR on the bottom left of the display. This takes you into the
FEED RATE (FR) calculations.
- Select the number of cutting flutes (FL) of the cutter using the MACHINE OPERATION arrows. The recommended CHIP LOAD (CL) per tooth will be displayed in thousandths. You can manually change the CHIP LOAD per tooth by pressing the up or down TOOL DIAMETER arrows. The corresponding inches per minute
FEED RATE (FR) will also be displayed.
NOTE: FEED RATE & CHIP LOAD calculations for stationary operations, such as C/O and FORMING are based on the width of the tool. The proper settings can be found in the published MACHINING DATA HANDBOOK.
For DRILL SIZE CALCULATIONS WHEN TAPPING:
- Press PAGE button until you see either TAP (NC) or TAP (NF). Press the MACHINE OPERATION arrows to find the appropriate tap size. The recommended drill
size given is for a 75% thread. Note that the (NC) and (NF) are in two different menus.
CALCULATIONS FOR MATERIALS NOT LISTED
- PAGE to MATERIAL SELECTION.
- Press TOOL DIAMETER arrows to scroll to the diameter of cutter being used or, if using a stationary tool, scroll to the diameter of the part.
- PAGE to FEED RATE (FR) calculator.
- Press the MACHINE OPERATION arrows to scroll to the proper number of cutting flutes (FL) being used.
- Press the TOOL DIAMETER arrows to scroll to the proper CHIP LOAD (CL) per tooth (in .001).
- Press the MATERIAL SELECTION arrows to scroll to the recommended surface foot rating (SFM). The feed rate in inches per minute and recommended
RPM will be displayed. At this point, you may PAGE to MATERIAL SELECTION and select a new tool diameter and the recommended RPM will be displayed.
Then by PAGING back to the FEED RATE calculator, the new FEED RATE will be displayed.
NOTE: When using this procedure, be sure NOT TO PRESS any button other than the TOOL DIAMETER arrows in the MATERIAL SELECTION section or it will
default back to the programmed information. HINT: If high surface foot ratings are recommended, press the MACHINE OPERATION arrows in the MATERIAL SELECTION section and select TURN (Lathe) operation. Scroll through the MATERIAL SELECTION to search for the closest approximate SFM setting desired.
Then proceed to step 4 above.
Material Directory - Spindle Speed Calculator
WTGS, Inc. * 307 West Fork Dr * Arlington, TX * 817-460-6221 * fax 817-274-9581
e-mail firstname.lastname@example.org * web www.acprodrive.com