Couplings for joining shafts
First Claim
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1. A coupling for use in a pump to coaxially connect a drive shaft to an impeller shaft along a longitudinal axis, the coupling comprising:
- an L-shaped base segment having an annular base portion and a generally semi-cylindrical extended portion, the base portion having an aperture extending therethrough and the extended portion having a first arcuate clamping surface;
a generally semi-cylindrical mating segment having a second arcuate clamping surface, the first and second arcuate clamping surfaces being configured to coaxially align with the aperture of the base portion when clamping about one of the drive or impeller shafts;
a pair of fasteners for securing the mating segment to the base segment; and
a wedging element for securing one of the drive or the impeller shafts to the aperture of the base portion.
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Abstract
A concentric coupling and method for making the same are taught which include a cylindrical block which is concentrically bored and cut into an annular L-shaped segment having an L-shaped notch and a semi-cylindrical mating segment which is received into the notch. The coupling concentrically joins a pair of shafts together.
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Citations
13 Claims
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1. A coupling for use in a pump to coaxially connect a drive shaft to an impeller shaft along a longitudinal axis, the coupling comprising:
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an L-shaped base segment having an annular base portion and a generally semi-cylindrical extended portion, the base portion having an aperture extending therethrough and the extended portion having a first arcuate clamping surface; a generally semi-cylindrical mating segment having a second arcuate clamping surface, the first and second arcuate clamping surfaces being configured to coaxially align with the aperture of the base portion when clamping about one of the drive or impeller shafts; a pair of fasteners for securing the mating segment to the base segment; and a wedging element for securing one of the drive or the impeller shafts to the aperture of the base portion. - View Dependent Claims (2, 3, 4, 5)
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6. The coupling of claim wherein:
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the mating segment and the base segment each have a pair of fastener apertures, the fastener apertures being laterally spaced and extending parallel to one another and perpendicular to the aperture in the base portion, the pair of fasteners extending opposite to one another when retained in the fastener apertures; wherein the coupling is generally dynamically balanced when securing together the drive and impeller shafts so as minimize the introduction of vibrations to a rotating drive system which includes a drive shaft and an impeller shaft which are joined by the coupling. - View Dependent Claims (7, 8, 9, 10, 11, 13)
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12. A method for making a coupling for joining a drive shaft and an impeller shaft of a pump together, the method comprising:
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providing a cylindrical block having a longitudinal axis; boring a concentric hole through the block along the longitudinal axis during a chucking of the block; cutting the block into an L-shaped base segment having an annular base portion with an aperture extending therethrough along the longitudinal axis and a generally semi-cylindrical extended portion having a first arcuate clamping surface and a separate generally semi-cylindrical mating portion having a second arcuate clamping surface, the clamping surfaces being coaxially alignable with the aperture in the base portion and having been formed by the concentric boring of the block; machining a pair of fastener apertures in each of the extended portion and the mating segment, each pair of fastener apertures being laterally spaced and extending parallel to the other pair and extending perpendicular to the aperture of the base portion;
installing threaded fasteners within the fastener apertures to secure the mating segment to the base segment; andsecuring a shaft within the aperture of the base portion; wherein the coupling couples together a pair of coaxially aligned shafts.
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Specification