RACK BAR AND METHOD FOR MANUFACTURING RACK BAR
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United States of America Patent
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Mar 22, 2016
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Mar 23, 2015
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Abstract
A rack bar includes a shaft member having a toothed section. The toothed section has a plurality of rack teeth, and extends over a portion of an entire length of the shaft member along a longitudinal direction of the shaft member. The shaft member has a grinding-finished outer peripheral surface extending over the entire length of the shaft member including the toothed section. A method for manufacturing the rack bar includes forming the toothed section by plastic working and grinding the outer peripheral surface to improve shape accuracy.
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