Mandrel for processing a workpiece with an internal spline
OwnerXu X. Huainventor
Life of this patent
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Abstract
A mandrel for use in processing a workpiece having an internal spline. The mandrel includes an expandable collet having an upper expandable spline-shaped portion and a lower portion with a groove adapted to receive two half-keys. Inside the expandable collet are a series of sleeves and steel balls. A bolt having a conical head and a nut hold the mandrel together. As the nut is tightened, the sleeves and balls cause the upper spline-shaped portion of the collet to expand to hold a workpiece having an internal spline. At the same time, the half-keys are forced apart in the key-way of an indexing rotary table to accurately position the mandrel on the table.
Claims10
A mandrel for processing a workpiece with an internal spline comprising two half-keys separated by a bolt, said two half-keys being positioned in a groove formed on the lower portion of an expandable spline-shaped collet, said expandable spline-shaped collet further comprising an expanding sleeve.
A mandrel for processing a workpiece having an internal spline, said mandrel comprising:
- an expandable collet having an upper portion and a lower portion;
- an expanding sleeve within said expandable collet;
- two half-keys positioned in a groove formed on said lower portion of said expandable collet;
- and
- a bolt having a conical head within said expandable collet, said bolt being adapted to separate said two half-keys and expand said expanding sleeve.
Dependencies are inferred from the claim text.