Shaped arm and X-ray machine

The utility model discloses a shaped arm and an X-ray machine. The head end and the tail end of the shaped arm are each provided with a sealing plate used for sealing a cavity of the shaped arm. Guide grooves are symmetrically formed in the left side wall and the right side wall of the shaped arm in the arc direction; a notch groove for avoiding the guide groove is formed in the sealing plate; and the notch groove is communicated with the guide groove, so that the guide wheel of the sliding module slides into the guide groove through the notch groove so as to mount the sliding module on the mold arm. 本实用新型公开了一种型臂及X光机，该型臂的首端和末端处均设置有用于封闭型臂的腔体的封板；型臂的左侧壁和右侧壁沿其弧形方向上对称开设有导向槽；封板上开设有避让导向槽的缺口槽；缺口槽与导向槽连通，使得滑转模组的导向轮经缺口槽滑入导向槽中以将滑转模组安装在所述型臂上。