Standard MiniMill� Cost Estimates by 6rlEDhL

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									        MiniMill™ Series Milling Machine Cost
                     Estimates




         By: Roger Cortesi                    rcortesi@mit.edu            http://pergatory.mit.edu/rcortesi/

                  Precision Engineering Research Group
             Massachusetts Institute of Technology, Mechanical Engineering Department

                         Room 3-470                                Phone: (617) 253-1953
                         77 Massachusetts Ave.                         Fax: (617) 258-6427
                         Cambridge, MA 02139                       http://pergatory.mit.edu/



Property of Roger Cortesi, MIT Precision Engineering Research Group. DO NOT COPY or TRANSMIT without written permission.
                  Standard MiniMill™ Prototype Component Costs
   Item                                      Company Quantity        Unit Cost   Sub Total             Category Total
   RE40 Motor                                Maxon           1       $ 245.00    $            245.00
   Rotary Encoder                            Maxon           1       $ 109.00    $            109.00
   Motor Amp                                 Maxon           1       $ 277.00    $            277.00    $            631.00
   Ball Screw                                Star Linear     1       $ 451.00    $            451.00
   Floating Pillow Block                     Star Linear     1       $ 82.00     $             82.00
   Fixed Pillow Block                        Star Linear     1       $ 239.00    $            239.00
   Ball Nut                                  Star Linear     1       $ 186.00    $            186.00    $            958.00
   Steel Truck Short (N Class)               Star Linear     4       $ 70.00     $            280.00    $            280.00
   15mm Rail 800 mm Long (N Class)           Star Linear     2       $ 173.00    $            346.00    $            346.00
                                                                                 Axis Total             $          2,215.00

   Machine Motion Total (3 times the Axis Total)                                                        $          6,645.00
   Controller (AeroTech PCI)                                                                            $          2,800.00
   Concrete Structure (Does not Include Mold Cost)                                                      $          2,200.00
   Aluminum Structure                                                                                   $          1,000.00
   Spindle (FPS 40/45)                                                                                  $          5,600.00
   Misc Harware                                                                                         $          1,000.00
   Computer                                                                                             $          1,000.00
   Total Prototype Machine Component Cost                                                           $ 20,245.00
   Estimated Mfg Cost for 100 Units per Year                                                    30% $ 14,171.50

    Upgrading to Highest Accuracy Trucks and Rails Add $1800 (mfg $1300)
    Upgrading to Linear Position Encoder Add $900 (mfg $630)
Property of Roger Cortesi, MIT Precision Engineering Research Group. DO NOT COPY or TRANSMIT without written permission.
                   Modified MiniMill™ Prototype Component Costs
Item                                Company Quatity Unit Cost Sub Total   Category Total
LCK-S-2 Coil                        Annorad        1 $ 670.00 $    670.00
LCK-S-2 Magnet (780mm)              Annorad        1 $ 780.00 $    780.00
Motor Amp                           Annorad        1 $ 400.00 $    400.00
ENC 150 (12" 2mircon)               Acu-Rite       1 $ 434.00 $    434.00 $        2,284.00
50 x 100 mm Flat Pad                New Way        4 $ 307.00 $ 1,228.00
75 x 150 mm Flat Pad                New Way        2 $ 373.00 $    746.00 $        1,974.00
                                                                                  Axis Total $                   4,258.00

Machine Motion Total (3 times the Axis Total)                                                          $           12,774.00
Controller (AeroTech PCI)                                                                              $            2,800.00
Concrete Structure (Does not Include Mold Cost)                                                        $            2,400.00
Aluminum Structure                                                                                     $            1,500.00
Spindle (FPS 40/45)                                                                                    $            5,600.00
Misc Harware                                                                                           $            1,000.00
Computer                                                                                               $            1,000.00
Total Prototype Machine Component Cost                                                           $ 27,074.00
Estimated Mfg Cost for 100 Units per Year                                                    30% $ 18,951.80

 Property of Roger Cortesi, MIT Precision Engineering Research Group. DO NOT COPY or TRANSMIT without written permission.
                                        Cost Comparison

   The motion elements in Modified MiniMill™ cost between 1.5
   and 2 times as much as those in the standard MiniMill™.
   This there is also an increase in the cost of the carriages in the
   Modified MiniMill™ due to more material and machine required
   There the Modified MiniMill™ Also requires the added cost of
   clean and dry air supply.
   Lifetime costing and machine accuracy will decide if the added
   costs of the Modified MiniMill™ are justified.



Property of Roger Cortesi, MIT Precision Engineering Research Group. DO NOT COPY or TRANSMIT without written permission.

								
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