飞机机电专业英语 扳手 wrench.ppt

LOGO TEXT HERE wrench Two basic turning tools: Turning tool Screw driver wrench 改锥，螺丝刀 扳手 wrenches Most of the threaded fasteners【螺纹紧固件】 on modern aircraft require wrenches to turn them. The assortment【n.种类】 of wrenches available to the aviation maintenance technician is almost endless, but a few basic types are essential【adj. 必不可少的；最基本的】. a. open-end wrench 开口扳 The open end wrench has an opening【n.开口】 with parallel【adj. 平行的】 sides, and is designed to accommodate【v. 容纳；使适应】 specific【adj.特定的】 sizes of nuts【n. 螺帽】 and bolt【n. 螺栓】 heads. The opening is usually off-set【偏移的】 at an angle of about 15 degrees. This allows the wrench to be turned over to fit【v.使适合】 the fastener in spaces where room for the handle【n.把手；手柄】 is limited. 开口通常与把手成15度角，这样设计有助于当把手转动空间受限时允许扳手被拧动以拧紧紧固件。 b. box-end wrench 梅花扳 The box end wrench has an six or twelve point opening which is off-set from the axis【n.轴线】 of the handle by about 15 degrees. 梅花扳有一个六角或十二角的开口，与把手轴线成15度角。 c. combination wrench 组合扳 The combination wrench incorporates【v.包含；合并】 an open end wrench on one end and the same size box end wrench on the other. d. socket wrench 套筒扳 The socket wrench is one of the most versatile【adj.通用的；万能的】 tools in the mechanic’s tool box. It has a six or twelve point opening on one end, and a square【adj.方形的】 opening on the opposite【adj.相反的；对面的】 end to accommodate any of several different handles, including the speed handle【快速摇把】, the breaker bar【加力杆】, the nut driver【螺帽扳手】, and the ratchet handle【棘轮手柄】. socket wrench e. Allen wrench 内六角扳手 The Allen wrench is designed for internal【adj.内部的；内在的】 wrenching bolts or Allen screws f. torque wrench 力矩扳手 The torque【n.力矩；扭矩】 wrench is calibrated【v.标定；校准】 so that a handle of specified length will apply a measured【v.测量】 force or torque to the fastener as it is turned. This force can be measured and indicated【v.指示】 in different ways. Deflecting beam 偏转梁型 Torsion bar 扭力杆型 Toggle type 曲拐型 LOGO TEXT HERE LOGO TEXT HERE LOGO TEXT HERE LOGO T