可供即時監控預壓力之滾珠螺桿BALL SCREW CAPABLE OF REAL-TIME SURVEILLANCE AND CONTROL OF PRELOAD

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/750,183

專利證號

US 9,145,958 B2

專利獲證名稱

可供即時監控預壓力之滾珠螺桿BALL SCREW CAPABLE OF REAL-TIME SURVEILLANCE AND CONTROL OF PRELOAD

專利所屬機關 (申請機關)

國立中正大學

獲證日期

2015/09/29

技術說明

本發明之主要目的在於提供一種可供即時監控預壓力之滾珠螺桿，其可藉由力量感測器設置位置特殊性，來提高量測預壓力的準確度，且不易受到外界干擾而影響準確度，進而可供使用者即時的監控預壓力的狀況。 為了達成前述目的，依據本發明所提供之一種可供即時監控預壓力之滾珠螺桿，包含有：一螺桿，具有一外螺紋；二螺帽，各該螺帽具有一內螺紋以及一循環通路，該循環通路兩端分別具有一入口以及一出口；該二螺帽係套設於該螺桿，且該二螺帽之內螺紋與該螺桿之外螺紋之間形成一螺旋路徑，該螺旋路徑與該循環通路相通；該二螺帽分別具有一鍵槽位於該二螺帽之相對端之環面上，且該二鍵槽彼此相對；一連結鍵，設於該二螺帽的鍵槽內且跨置於該二螺帽；一力量感測器，設於該二螺帽之相對面之間而受該二螺帽之相對面所擠壓；以及複數滾珠，位於該螺旋路徑或該二螺帽之循環通路內，在運動時滾動。 The primary objective of the present invention is to provide a ball screw which is capable of sensing a preload for monitoring the preload in real time. The secondary objective of the present invention is to provide a ball screw which is not subject to any environmental factor, because it senses a preload directly, to have more accurate sensing result relatively. The foregoing objectives of the present invention are attained by the ball screw formed of a nut, a screw, and a plurality of balls. The nut includes an internal thread surrounding an imaginary central axis of the ball screw. The screw includes an external thread surrounding the imaginary central axis. The balls are mounted between the internal and external threads in a way that the balls roll therebetween.

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