What Is a Broaching Machine?

A broaching machine is a machine tool that uses a broach as a tool to process the through-holes, flat surfaces and forming surfaces of a workpiece. Broaching can obtain higher dimensional accuracy and smaller surface roughness, high productivity, and is suitable for mass production in batches. Most broaching machines only have the main motion of straight broaching, but no feed motion.

According to the processing surface, the broaching machine can be divided into inner broaching machine and outer broaching machine. Internal broaching machine (see picture) for

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Broach appearance maintenance

(1) Clean the exterior of machine tools, guide rails, repair burrs, no rust, and no yellow robes. (2) Check for handballs, handles, screws, and nuts. ^[1]

Hydraulic drive of broaching machine

(1) Check if the pressure gauge is sensitive and reliable. (2) Check the oil quality, keep it well, and clean the oil pool. (3) Check whether the pull rod, screw and guide rail are bristled. (4) Adjust the gap between the plugging iron of each part. (5) Clean and inspect the oil pump, bearing and various valve components. ^[1]

Broach cooling system

(1) Cleaning coolant, no iron filings, no debris. (2) The pipeline is unobstructed and clean. (3) Change the cooling oil according to the situation. ^[1]