Machining tool for boring hole in cylinder body of piston inflating pump

The utility model provides a machining tool for piston inflating pump cylinder body boring. The machining tool comprises a bottom plate and a pressing assembly. The pressing assembly comprises a driving device and a pressing plate. The driving device and the pressing plate are additionally arranged, and the pressing plate is fixedly installed at the driving end of the driving device; the driving device has a first state and a second state; in the first state, the driving device drives the pressing plate to rotate and descend, so that the pressing plate is propped against the top of the workpiece; in the second state, the driving device drives the pressing plate to rotate and ascend; in the machining process of boring machining, the pressing plate can avoid a clamping area, and machining of a workpiece is facilitated; and meanwhile, compared with manual tightening, the working efficiency is improved through an automatic pressing mode, the problem that indentations are caused by misoperation or uneven force gen