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    • 4. 发明授权
    • Apparatus for hardware item inspection
    • 五金件检查装置
    • US3983388A
    • 1976-09-28
    • US619785
    • 1975-10-06
    • George Gugliotta
    • George Gugliotta
    • G01B11/06G01D11/14G01V8/14G01D21/04
    • G01D11/14G01B11/0608G01V8/14
    • The present invention is directed to an apparatus for automatically examining hardware items progressing along a track to detect their characteristics and automatically sort the items in accordance with their characteristics. In accordance with one embodiment of the invention there is provided a nut inspection apparatus for monitoring the height of nuts, the apparatus being adaptable to also determine if threading is present on the inner surface of the nuts. In this embodiment there is provided a ramp for carrying the nuts, the ramp having a slot which defines an inspection position. A laser beam is split into first and second beams and adjustable means are provided for directing the first beam transverse the ramp and over the slot at the inspection position, the means being adjustable to a predetermined position above the ramp. A first photodetector is provided for receiving the first beam in the absence of a nut of prescribed height at the inspection position. Means are provided for directing the second beam toward the inner surface of a nut at the inspection position. A second photodetector is provided for receiving through the slot the light reflected from the inner surface of the nut. Means enabled by the output of the second photodetector are provided as being responsive to the output of the first photodetector for generating a height monitoring occurrence indication. Also, means enabled by the output of the first photodetector are provided for generating a thread indicative occurrence indication when the output of the second photodetector exceeds a predetermined threshold level.
    • 本发明涉及一种用于自动检查沿着轨道前进的硬件项以检测其特性并根据其特性自动分类物品的装置。 根据本发明的一个实施例,提供了一种用于监测螺母的高度的螺母检查装置,该装置也适用于还确定螺母的内表面上是否存在螺纹。 在该实施例中,提供了用于承载螺母的斜坡,斜坡具有限定检查位置的狭槽。 激光束被分裂成第一和第二光束,并且提供可调节装置,用于在检查位置处引导第一光束横向斜坡并且在狭槽上方,该装置可调节到斜坡上方的预定位置。 第一光电检测器用于在检查位置没有规定高度的螺母的情况下接收第一光束。 提供了用于在检查位置将第二梁引导到螺母的内表面的装置。 提供第二光电检测器用于通过狭槽接收从螺母的内表面反射的光。 提供由第二光电检测器的输出启用的装置作为响应于第一光电检测器的输出而产生高度监测发生指示。 另外,由第一光电检测器的输出使能的装置被提供用于当第二光电检测器的输出超过预定阈值电平时产生线程指示出现指示。