Boring riser holes in a graphite mold
AssigneeAMSTED Industries Incorporated
InventorChristopher Sieradzki
Life of this patent
Estimating the term…
Abstract
A drill press is provided that is specially adapted for drilling openings into a cylindrical block. The cylindrical block is placed on an indexing plate that is circular and capable of rotational movement on the drill press table around the center axis of the cylindrical block and indexing plate. An indexing plate support is used to help precisely rotate the indexing plate. The drill press can drill a plurality of openings through the cylindrical block at the same radial distance from the center axis of the block without need to move the drill spindle.
Claims18
A method of boring a plurality of openings in a block comprising the steps of:
- securing an indexing plate to a base of a drill press such that the indexing plate is rotatably moveable on the drill press base about a preselected axis,
- securing an extended edge of the indexing plate with an indexing plate support,
- placing the block in the indexing plate such that the block rotates with the indexing plate,
- drilling a first opening in the block at a first preselected location,
- rotating the indexing plate with the block and drilling a second opening in the block at a second preselected location, wherein the first and second openings are at the same radial distance from a center point of the block.
A drill press assembly comprising
- a drill press table,
- a base plate secured to the drill press table, an indexing plate rotatably moveable on the base plate about a preselected axis,
- an indexing plate support securing an extended edge of the indexing plate,
- a block placed in the indexing plate such that the block rotates with the indexing plate,
- a drill press arm on a drill head supported thereon, the drill head located at a preselected location on the drill press arm in order to drill a first opening in the block at a first preselected location in the block.
- and, upon rotation of the indexing plate and the block, the drill head being able to drill a second opening in the block at a second preselected location without moving the drill head,
- and wherein the first and second openings in the block are at the same radial distance from the center point of the block.
A method of boring a plurality of openings in a cylindrical block comprising the steps of:
- securing an indexing plate assembly to the base of a drill press such that a circular indexing plate is rotatably removable on the drill press base about a preselected axis,
- securing an extended edge of the indexing plate from rotation with an indexing plate support,
- placing a cylindrical block onto the indexing plate such that the block rotates with the indexing plate,
- drilling a first opening through the cylindrical block at a preselected angle and radial distance from a center axis of the cylindrical block,
- rotating the indexing plate with the cylindrical block through a preselected angular displacement and drilling a second opening through the block at a preselected angular displacement from the first opening and at the same radial distance from the center axis of the cylindrical block as the first opening.
Dependencies are inferred from the claim text.