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1. 发明授权

US4155172A Arrow straightness gauge 失效
标题翻译：箭直线度计
公开(公告)号：US4155172A
公开(公告)日：1979-05-22
申请号：US837713
申请日：1977-09-29
申请人： James D. Bartol
发明人： James D. Bartol
IPC分类号： G01B3/34 , G01B5/20
CPC分类号： G01B5/20 , G01B3/34
摘要： The arrow straightness gauge of this invention has an elongated body of a preselected length. A circular cross-sectional passageway traverses the entire length of the elongated body and provides openings at both ends of the elongated body. The aforementioned arrow shaft has a preselected diameter and a preselected length. The circular cross-sectional passageway is provided with an internal diameter greater than the arrow shaft diameter, such that when the arrow shaft is inserted axial through the circular cross-sectional passage there is established a diametral clearance between the arrow shaft to be tested and the internal diameter of the circular cross-sectional passageway. The circular cross-sectional passageway has a diameter equal to the arrow shaft diameter to be tested plus a measurement in the range of between 0.003 and 0.023 times the arrow shaft diameter to be tested. The elongated body of the arrow shaft straightness gauge has a length no less than 0.1 the arrow shaft length the straightness of which is to be tested. The elongated body of the gauge is fashioned of the same material composition as the arrow shaft to be tested.
摘要翻译：本发明的箭头直线度计具有预选长度的细长体。圆形横截面通道穿过细长主体的整个长度并在细长主体的两端提供开口。上述箭头轴具有预选直径和预选长度。圆形横截面通道具有大于箭头轴直径的内径，使得当箭头轴通过圆形横截面通道轴向插入时，在待测试的箭头轴和圆形横截面通道的内径。圆形横截面通道的直径等于待测试的箭头轴直径，加上在要测试的箭头轴直径的0.003和0.023倍之间的范围内的测量。箭头轴平直度计的细长体长度不小于0.1，其直线度要测试的箭头轴长度。仪表的细长主体由与要测试的箭头轴相同的材料组成形成。

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