装配量具.ppt

装配量具 * 装配量具 MEASURING TOOLS 刻度尺Graduated ruler 直尺 Straight edge 游标卡尺 Vernier callipers Vernier calipers set to 21,8 mm 设为21.8 mm的游标卡尺 1 =fixed measuring jaw 固定量爪 2=slidable measuring jaw 活动量爪 for the measurement of external 3 =clamping screw 夹紧螺钉 dimensions 用于测量外部尺寸 4 =vernier 游标 5 =ruler with main graduation 主刻度尺 6 =fixed measuring jaw 固定量爪 7 =slidable measuring jaw 活动量爪 for the measurement of internal 8 =depth measuring pin 测深杆 dimensions 用于测量内部尺寸 Vernier calipers and the various parts 游标卡尺及各个部件 使用 Use 在进行测量时,我们必须注意:游标卡尺要放置在所测长度的方向上. During the measurement, we must take care that the vernier calipers are placed in the direction of the length to be measured. ? 通过前后移动游标卡尺“凭感觉”来检查。 Check this by moving the vernier calipers “with feeling” back and forth. 此外,我们还必须注意在工件上倒圆和去毛刺. Besides this, one must be aware that roundings-off and burrs can be present on the workpiece, left by the machining. ? 测量时要注意测量面不要沿着工件滑动. 下图显示了应如何进行. 读数时,眼睛必须在指示的上方,此外,测量的用力必须始终要小和大小不变. When measuring, take care that the measuring faces do not slide along the workpiece. The figure below shows how to proceed. When reading, the eye must be above the indication and the measuring force must moreover always be constant and small. 保养和定期检查 Maintenance and regular inspection 游标卡尺必须要保持明亮. 定期在清洁后涂上薄薄的一层防酸油可预防氧化.,也有助于移动时能平滑. Vernier calipers must be bright and stay that way. Regular smearing after cleaning with a thin layer of acid-free oil prevents oxidation. This moreover helps the smooth moving of the slide. ? 游标卡尺若用于高品质生产过程中,则必须 每年进行校验.. If the vernier calipers are used in high quality production processes, they must be calibrated once every year. 游标卡尺的种类 Kinds of vernier callipers 通用游标卡尺;universal vernier calipers; 深度游标卡尺depth vernier calipers; 高度游标卡尺.height vernier calipers. 千分尺Micrometer gauges 测量范围Measuring range 在做外部和深度测量时,千分尺的移动量销所移动的距离不要超过25 mm,这与螺纹规定的精度有关. 根据所要测的工件长度, 在许多情况下,总必须用到另