This invention provides a broach for gear
machining and its finishing device, relating to the field of
gear manufacturing technology. The broach and finishing device include a
bed, a drive unit, a CNC
system, a clamping device, a
coolant storage tank, a high-pressure air supply device, a dust extraction device, and two sets of cooling pumps. When the
coolant cooling effect is insufficient, the invention increases the
coolant flow rate through an electrically controlled flow valve to improve the
cooling effect. If necessary, forced cooling can be achieved by simultaneously activating two sets of cooling pumps, significantly enhancing the
cooling effect. The high-pressure air supply device provides high-pressure air to the
compressed air nozzle, which is then sprayed onto the surface of the CBN
grinding wheel through the jet chamber outlet to clean the surface, effectively reducing clogging and the frequency of
grinding wheel dressing. Simultaneously, the dust extraction device, dust extraction
pipe, and dust extraction hood remove dust from inside the
grinding wheel hood, reducing floating dust and preventing dust from adhering to the
grinding wheel surface and entering the grinding area.