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微钻机是一种用小尺寸钻头进行模拟钻进的钻机，是进行岩石破碎和可钻性研究的必要手段。1984年地矿部频布的《金刚石岩心钻探岩石可钻性分级表》（试行）中将微钻指标列为岩石可钻性分级的指标之一，因此微钻机就成为岩石可钻性分级的主要设备之一。由于微钻要求稳定的钻压和转速，且要求将较短时间内的钻进参数和钻进指标准确无误地记录下来，因此微钻机必须能稳定加压并正确测试各钻进参数和钻进指标。我们在完成岩石可钻性分级研究课题的过程中，研制了较为适用的SDY-1型微钻机，用其钻进了400余块岩样。现将该微钻机简要介绍如下。
Micro-rigs are drills that simulate drilling with small-sized drills and are necessary tools for rock fragmentation and drillability studies. In 1984, the Geological Bureau of Mines and Minerals Distribution Diamond Core Drilling Rock Drillability Hierarchy Table (for Trial Implementation) will be micro-drill index as one of the indicators of the rock drillability classification, micro-drilling rig became rock drillability classification One of the main equipment. Because micro-drills require a steady-state weight-on-bit and speed, and require accurate logging of drilling parameters and drilling metrics over a shorter period of time, the micro-rig must be able to stably pressurize and properly test each drilling parameter and drill index. In the process of grading the feasibility of rock drillability, we developed the more suitable SDY-1 micro-rig, drilling more than 400 rock samples. The micro drilling rig is now briefly described below.