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我厂生产的发电设备中,由于品种较多,也有一定批量,在加工中一般的通用量具就跟不上生产发展需要。特别是电机止口尺寸。用游标卡尺不容易保证精度要求,所以我们制作了大量的专用量具——外止口凹卡板。但是由于卡板的规格多,公称尺寸大,精度公差要求严,采用块规组合校验,不仅操作不方便而且容易产生误差。为此我们改制了一种测量比较仪(见图),只要用外经分厘卡作基准量具,就可以准确地校验工作面的尺寸精度和其平面的平行度。
I plant the power generation equipment, due to more varieties, but also a certain batch, in the general processing of the measuring tools can not keep up with the production and development needs. Especially the size of the motor stop. With vernier caliper is not easy to ensure accuracy requirements, so we made a large number of special measuring tools - outside the pockets Concave card. However, due to the specifications of the pallets, nominal size, precision tolerances demanding, the use of block gauge combination of checks, not only inconvenient to operate but also prone to error. To this end, we adapted a measuring comparator (see Figure), as long as the use of points outside the PCT as a reference measuring instrument, you can accurately check the accuracy of the face and the plane of its parallelism.