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机床油缸、导套沟槽内孔径、外孔径的测量,如压铸机床、锻压机床,阀门、活塞等产品零部件内沟槽尺寸的测量,目前尚无有效的测量工具,主要是利用游标卡尺测量爪的加长或改进,或者是类似卡钳结构的改进。这些测量工具在设计原理和使用方面存在一些难以克服的缺陷,如:①利用游标卡尺测量爪的加长或改进,阿贝原理误差较大,同时主尺和游标的零刻线不重合,存在零位误差和视值误差等。利用类似卡钳结构的改进,两测头移动轨迹是圆弧,两测头的中心线与测量中心线不在同一直线上,存在原理性结构误差,测量精度较差;②采用卡钳结构改进,测量范围小,仅能进行比较测量;③测量前均需千分尺校验零位,使用不方便。为此,我们将容栅传感器应用于沟槽测量,设计了四种不同型式的沟槽测量量具,并在生产中应用。
There are no effective measurement tools for the measurement of the groove size in the parts of machine tool cylinder, forging machine tools, valves, pistons and other parts of the machine tool cylinder, guide bush groove and outside diameter measurement, mainly using the calipers to measure the claws The extension or improvement, or similar caliper structure improvements. These measurement tools in the design principles and use of some insurmountable shortcomings, such as: ① the use of calipers to measure the claw extension or improvement, Abbe principle larger error, while the main ruler and the zero mark line does not coincide, there is zero Error and visual error and so on. The use of similar caliper structure improvements, the two probe moving path is circular arc, the center line of the two probes and the measurement center line is not in the same line, there is the principle of structural errors, poor measurement accuracy; ② using calipers to improve the measurement range Small, can only be compared to measure; ③ micrometer required before the calibration check zero, inconvenient to use. To this end, we applied a grid-sensing sensor to the trench measurement, and designed four different types of trench measurement gauges for use in production.