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半径样板

半径样板也称(R规R半径规半径规弧度規),是一种带有一组准确内、外圆弧半径尺寸的薄板,用于检验圆弧半径的实物的量具,圆弧半径在 1 毫米 ~ 25 毫米的成组半径样板有凸形样板和凹形样板,用螺钉铆钉钉在保护板两端。此外还规定半径样板的尺寸分为 1 ~ 6.5 毫米、7 ~ 14.5 毫米和 15 ~ 25 毫米三个组别。样板一般采用 45 钢或同等性能的冷轧带钢材料制作,硬度在170 HV ~ 230 HV 之间。[1]

参考资料

[编辑]
  1. ^ 《JB/T 7980-2010 中华人民共和国机械行业标准 半径样板》
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半径样板
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