结构件常用检验工具使用方法及检验标准(中英文对照).docxVIP

结构件常用检验量具使用方法及检验标准 Usage common inspection tools and Inspection standard of structural parts 游标卡尺( Vernier caliper ) 1.1 简介( Brief introduction ) 游标卡尺是一种常用的量具，具有结构简单、使用方便、精度中等和测量的尺寸范围大等特点，可以用它来测量零件的外径、内径、长度、宽度、厚度、深度和孔距等，应用范围广泛。 Vernier caliper is a common measuring tools, It is Simple structure\ Easy to use\The accuracy Medium, It can measure the outer diameter\ inside diameter\ Width \ Thickness \Depth and Hole pitch of component, Wide range of applications. 1.2 游标卡尺的读数原理和读数方法 (Reading principle and Reading Method of Vernier caliper ) 游标卡尺的读数机构，是由主尺和游标(如图2―2中的6和8)两部分组成。当活动量爪与固定量爪贴合时，游标上的“0”刻线(简称游标零线)对准主尺上的“0”刻线，此时量爪间的距离为“0”，见图1―2。当尺框向右移动时，固定量爪与活动量爪之间的距离，就是零件的测量尺寸，见图1―1。此时零件尺寸的整数部分，可在游标零线左边的主尺刻线上读出来，而零件尺寸的小数部分，可借助游标读数机构来读出。 Vernier caliper readings agency, It is composed of the main scale and vernier two parts . When the active jaw and fixed jaw of bonding, Cursors 0 engraved line aligned with the main scale 0 engraved line， At this point the distance between the jaws is 0, See Figure 1-2。When the foot frame is moved to the right，The distance between the fixed jaw and active jaw，It is a measure of the size of the part，See Figure 1-1。the integer part of the part size，It is can be read out at the cursor zero line to the left of main scale reticle，the fractional part of the part size，It is can be read out at the cursor readout mechanism. 图1-1 游标卡尺的结构型式之一 Figure 1-1 One structure type of the vernier caliper 尺身；2-上量爪；3-尺框；4-紧固螺钉；5-深度尺；6-游标；7-下量爪。 1-Foot body; 2- Upper jaw; 3- Foot frame; 4- Fastening the screws; 5- Depth Gauge; 6- Vernier; 7- Lower jaw 图 1-2 游标卡尺的结构型式之二 Figure 1-2 Two structure type of the vernier caliper 1一尺身；2一上量爪、3一尺框；4一紧固螺钉；5一微动装置；6一主尺；7一微动螺母；8一游标；9—下量爪 1-Foot body; 2- Upper jaw; 3- Foot frame; 4- Fastening the screws; 5-Fine tuning device; 6-Main scale; 7-Fine tuning nut; 8- Vernier; 9- Lower jaw 1.3 游标卡尺的使用方法( Use vernier caliper ) 使用游标卡尺测量零件尺寸时，必须注意下列几点： When using calipers to measure part dimensions, you must pay attention to the follo