Dianamic Header
About Us Services Products Ordering Contact Us
Grinding
Lapping Paste
Quote Request
Information Request
Dianamic Home
 

API Thread Grinding / Profile Grinding Wheels

DIANAMIC® manufactures single layer Diamond and cBN API Thread Grinding Wheels and Profile Grinding Wheels.

API thread grinding wheels are used to manufacture carbide inserts used by the petroleum industry. Profile grinding wheels are used to grind very specific forms used in the manufacture of turbines (jet propulsion and electrical production. Profile wheels are also commonly used in the automotive industries.

Two methods of wheel core manufacture are utilized:
  1. Ground forms on wheel adaptors (up to 10" or 254mm in diameter)
    Maximum width 10" (254mm)
  2. Forms turned on CNC lathes (up to 20" or 508mm in diameter) Maximum width 12" (305mm)

The methods chosen to manufacture an API Thread Grinding or Profile Grinding wheel core is dependant on the tolerances specified by each individual customers stated print requirements.

The following two scenarios are examples of minimum achievable ground part tolerances utilizing 325/400 Mesh (FEPA D46) Diamond or cBN.

  1. On typical API thread grinding or profile grinding wheel cores on which the forms are mounted on a wheel adaptor and ground between centers, in diameters 6" to 10" and coated with 325/400 Mesh (FEPA D46), the minimum achievable ground part tolerances are:
    1. Radii +/-.0005" (0.012mm)
    2. Tooth location +/-.0003" (0.007mm)
    3. Maximum run out in X and Y axis .0005" (0.012mm)

  2. On typical API thread grinding or profile grinding wheel cores which are CNC turned in diameters up to 20" and coated with 325/400 Mesh (FEPA D46), which are clocked or indicated to within .0005" (0.012mm, the minimum achievable ground part tolerances are:
    1. Radii +/-.0007" (0.018mm)
    2. Tooth or form location +/-.0005" (0.012mm)
    3. Maximum run out in X and Y axis .0005" (0.012mm)

    Refer to the DIANAMIC superabrasive particle size reference chart for a complete listing of achievable tolerances by mesh / micron size.

    Minimum Achievable Radii by Mesh Size
    Mesh Female Male
    400/500 .003" .003"
    325/400 .004" .005"
    270/325 .005" .006"
    230/270 .006" .008"
    200/230 .008" .010"
    170/200 .010" .012"
    140/170 .011" .013"
    120/140 .012" .015"
    100/120 .015" .015"
    80/100 .018" .018"
    60/80 .020" .025"
    40/50 .035" .035"

    API Thread Grinding Technical Information

    Wheel Size

    The most common API Thread Grinding Wheel offering the greatest accuracy is either 7" (178mm) or 6" (152mm)

    1. Ground forms up to 10" Diameter x 10" Width
    2. CNC turned forms up to 20" Diameter x 12" Width

    Angular Compensation

    For each design or part number, a 20X and 50X Mylar is created. The mylar is compensated to achieve the ground profile required. We compensate the form according the individual prints specifications for:

    1. Front, Side and Radial clearance
    2. Helix Angle
    3. Top Rake
    4. Tilt
    Compensations with more than one correction are quite common. To achieve the correct profile we will advise if any special fixturing or angular tilting is required. Angular tilting of sharp angles dramatically increase wheel life.

    Profile Limitations

    We are limited by the size of the Diamond or cBN Mesh size specified in respect to profile limitations. The tabulated chart indicates the minimum Female and Male radii achievable in the ground profile.

    Inspection Mylars or Comparator Overlays

    Our engineering department can provide part mylars for inspection in the following powers:

    1. 10X
    2. 20X
    3. 32.5X
    4. 50X
    5. 100X
    The inspection mylars can be of compensated forms or forms checked square. Mylars with the full form at 20X and single tooth at 50X is a very common option. If your optical comparator is 14" or smaller we can offer a mylar with teeth tabulated with exact moves which will fit your screen. Normal cost is $125.00 per drawing.

    Delivery

    Normal delivery is 2-3 weeks from receipt of print. Strip / recoat delivery is 5 - 7 days from receipt of wheel blanks. Strip / remachine / recoat delivery is 7-10 days. Emergency delivery on new is 3-5 days from receipt of order and print at a 50% surcharge.


Today's date: 7/30/2010
© 2001 DIANAMIC® Abrasive Products, Inc. All rights reserved.
2566 Industrial Row Drive -- Troy, Michigan 48084 USA
Telephone +248 280 1185 Facsimile + 248 280 2733
Toll Free in North America 1 888 DIANAMIC