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An Example in Ductile Iron Casting  Axle Housing for Skid-Steer Loader

Designing the Mold and Core for Slot Production

The bolt slots on the original welded design were machined features. One of the primary benefits of a casting is the capability of forming the bolt slots directly and eliminating the machining requirement.

  • The bolt slots are critical features that have to be well aligned to match with the eight bolts on the loader frame.

  • The bolt slots are formed in the casting with cores (an insert made of sand used to form a cavity in the casting) placed in the mold.

The casting engineer has a choice in the core design for producing the bolt slots. His options are --

  • Option A -- Fabricating and positioning a single, small core for each slot -- a total of eight cores in the main mold.

  • Option B - Fabricating a single core plate that has 8 slot features incorporated and positioning that single core plate in the mold

Considering the alignment requirement against the cost of a more complex core, which option would you choose -- A or B!

axle_08.jpg (34567 bytes)


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Last Modified:May, 2000 by STG

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