Sander

The utility model relates to the technical field of sander equipment. The utility model relates to sanders, in particular to a sander. The device comprises a shell, a transmission shaft and a workingbottom plate, a driving device is arranged in the shell; the working bottom plate is arranged on the shell; the transmission shaft is rotationally arranged in the shell; the transmission shaft is connected with the output end of the driving device through a molded surface; when the sander is used, the original interference fit between the output end of the driving device and the transmission shaftis changed into the molded surface connection between the output end of the driving device and the transmission shaft, so that the installation and the maintenance between the driving device and thetransmission shaft are more convenient and faster, and the working efficiency is improved. 本实用新型涉及砂光机设备技术领域，尤其是涉及一种砂光机，包括壳体、传动轴、工作底板，所述壳体内设置有驱动装置，所述工作底板设置在壳体，所述传动轴转动设置在壳体内，所述传动轴与驱动装置的输出端之间型面连接，本实用新型砂光机在使用时，通过将原有驱动装置输出端与传动轴之间的过盈