Collapsible Core Design & Assembly Guide - DME
Collapsible Core Design & Assembly Guide - DME
Collapsible Core Design & Assembly Guide - DME
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
CC 652 P.C. <strong>Core</strong> Dimensions<br />
1.520<br />
MIN<br />
4.800 4.000<br />
STRIPPER INSERT<br />
3°<br />
0.150 COLLAPSE MIN<br />
AT FACE<br />
0.010<br />
0.010<br />
5°MIN DRAFT<br />
PER SIDE<br />
R.020 MIN<br />
(NOTE 1)<br />
.060 FLAT<br />
0.030 FLAT MIN<br />
(NOTE 7)<br />
(CIRCULAR STEP DETAIL)<br />
15°<br />
<strong>DME</strong><br />
<strong>Collapsible</strong> <strong>Core</strong><br />
.045 MIN<br />
.075 MAX<br />
(NOTE 1)<br />
60° C'SINK<br />
BOTH ENDS<br />
FOR GRINDING<br />
Ø3.800<br />
MIN<br />
STK<br />
CENTER PIN<br />
COLLAPSIBLE CORE<br />
0.375<br />
Ø2.450 ±.005<br />
CENTER SCREWS ON MIDDLE<br />
OF LARGE SEGMENT<br />
2.250<br />
2.400<br />
2.400<br />
0.500<br />
NOM<br />
2.380<br />
MAX<br />
R.06<br />
P.C. SLEEVE<br />
www.dme.net<br />
0.030 MIN CLEARANCE REF<br />
0.030 MIN CLEARANCE<br />
0.250 MAX SHUT OFF HEIGHT<br />
DO NOT USE TAPERED SHUT OFF<br />
Ø4.900<br />
NOM<br />
11.250±.004<br />
7.157 NOM<br />
Ø5.265<br />
NOM<br />
Ø4.024 ±.001<br />
0.188 NOM<br />
USE SCREWS TO<br />
ALIGN CORE ON PIN<br />
PARTIAL MOLD<br />
ASSEMBLY DETAIL<br />
1.750 ±.005<br />
(NOTE 4)<br />
0.374 ±.001<br />
Ø4.450 +.000<br />
-.010<br />
1.250<br />
MIN<br />
1.750 ±.005<br />
SET-UP FOR GRINDING<br />
REFER TO GRINDING INFORMATION<br />
(NOTE 4)<br />
P.C. SLEEVE<br />
COLLAPSIBLE CORE<br />
CENTER PIN<br />
Ø2.712 ±.001<br />
Ø3.150 +.000<br />
-.010<br />
45<br />
Ø.937<br />
COOLING HOLE<br />
INDICATE HERE FOR<br />
GRINDING .003 MAX T.I.R.<br />
NOTES:<br />
1. Center pin to project .045 minimum/.075 maximum above front face of <strong>Collapsible</strong> <strong>Core</strong> with .020 R minimum at corners. See suggested partial mold<br />
assembly view.<br />
2. Both ends of center pin to be cut off after grinding<br />
contour on <strong>Collapsible</strong> <strong>Core</strong> before assembly in mold.<br />
3. Minimum suggested I.D. of thread or undercut is 2.890-S to give minimum steel support between depth of undercut and center pin.<br />
4. The 1.750 ±.005 dimension must be held in mold assembly and core grinding.<br />
5. Consult Grinding Instructions.<br />
6. A 1 ⁄16 radius is essential on the inside corners of the stripper insert, especially where shut-off contacts <strong>Collapsible</strong> <strong>Core</strong>.<br />
7. Thread must never be run out of face of core, leaving a knife-edge of material. For complete instructions, refer to <strong>Design</strong> Procedures.<br />
8. Do not use center pin as a pilot into “A” half of mold.
Change language