Collapsible Core & Collapsible Minicore - Roehr Tool Corporation
Collapsible Core & Collapsible Minicore - Roehr Tool Corporation
Collapsible Core & Collapsible Minicore - Roehr Tool Corporation
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COLLAPSIBLE CORECC 652 P.C. <strong>Core</strong> Dimensions (cont.)CENTER SCREWS ON MIDDLEOF LARGE SEGMENT2.380MAXSET-UP FOR GRINDINGREFER TO GRINDING INFORMATION 1.750 ±.005(NOTE 4)4.8004.000USE SCREWS TOALIGN CORE ON PININDICATE HERE FORGRINDING .003 MAX T.I.R.NOTES:1. Center pin to project .045 minimum/.075 maximum above frontface of <strong>Collapsible</strong> <strong>Core</strong> with .020 R minimum at corners. Seesuggested partial mold assembly view.2. Both ends of center pin to be cut off after grindingcontour on <strong>Collapsible</strong> <strong>Core</strong> before assembly in mold.3. Minimum suggested I.D. of thread or undercut is 2.890-S togive minimum steel support between depth of undercut andcenter pin.5. Consult Grinding Instructions.6. A 1/16 radius is essential on the inside corners of the stripperinsert, especially where shut-off contacts <strong>Collapsible</strong> <strong>Core</strong>.7. Thread must never be run out of face of core, leaving aknife-edge of material. For complete instructions, refer toDesign Procedures.8. Do not use center pin as a pilot into “A” half of mold.4. The 1.750 ±.005 dimension must be held in mold assemblyand core grinding.Questions? Call <strong>Roehr</strong> <strong>Tool</strong> <strong>Corporation</strong> at 978-562-4488 or Toll Free at 877-563-1912.77
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