Inclined bolt

Arrangement of the inclined bolt and the locking wedge on the fixed half, whereas the slider guidance is on the ejector half of the mold. 

Inclined bolt has to be sufficiently dimensioned to withstand the opening force. 

If the foot inclines from either the outer or inner border, it will always rise upon loosening the base bolt, and correct alignment will be almost impossible. It will be necessary to re-machine all four feet to achieve parallelism between them. 

Figures 7.64 and 7.65 provide a view of the fracture surface of a bolt recovered following a fall of ground from a hardrock mine. This is at magnification x 10. A close-up of dimpled areas is presented in Figure 7.66, at a magnification x 1500. The dimples are shallow and inclined characteristic of ductile fracture. No sign of cleavage or quasicleavage, is observed (absence of river pattern that would be associated with brittle fracture). In the upper right part of the photo dimpled areas are masked by oxidation.

The various types of assemblies discharged from the reactor are stored in racks bolted to the floor at the end of the canal. The racks are designed to facilitate easy insertion and removal by providing unrestricted sidewise accessibility. The short assemblies are stored vertically or inclined at a slight angle to the vertical, while the long rods are stored parallel to the canal floor or at an incline to the, horizontal. The canal purge is utilized. to cool the assemblies.. . ... 

A major factor in the choice of cab construction was the need for adequate protection to driver and secondman from high-speed missiles. Original impact tests were carried out on panels measuring 914 mm square, at Hawker Siddeley, Hatfield. The test requirement was that a 1.8 kg hollow steel cube fired corner on at the panel, at 250 kmh, should be completely arrested. Panels were bolted to a rigid frame and inclined at 40 to the vertical to simulate the slope of the cab front, the projectile being fired horizontally. 

Figure 1.17 shows that the bolt f has a 2 to 3° lower inclination angie g than the wedge angle h. This encourages that the last phase of the movement is done by the wedge surface and the bolt is released in final position. 

Bolt inclination angle should be between 15 to 25°. Chose as small as possible to get a high slider closing force. 

To reach an acceptably short bolt length for the necessary slider stroke (depending on the undercut depth) the bolt inclination angle should be rather bigger than... 

Wedge surface angles should be 2 to 3° higher than the bolt inclination angle. 

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