News Update: Progress on Machining Metal Castings and Forgings

During this week’s production schedule, the machining workshop initiated detailed processing operations for a batch of metal castings and forgings. After completing initial cleaning, deburring, and preliminary dimensional checks, the components have now entered the formal machining phase, which includes rough turning, finish turning, face alignment, hole machining, boring, chamfering, and final inspection.

In the turning stage, operators first use a three-jaw chuck to secure the workpiece, adjusting face runout with a dial indicator to keep the reference surface within the specified tolerance. Rough machining utilizes tools designed for rapid material removal, with cutting parameters set to medium feed and larger cutting depth to ensure efficiency. After rough turning, the parts undergo cooling and stress relief to prevent dimensional drift during subsequent processes.

The hole-machining phase uses a sequence of center drills, twist drills, and boring tools to gradually expand the hole. To ensure concentricity between the inner hole and the outer diameter, the machine’s tool setter records baseline values and rechecks alignment after every tool change. Some deep-hole structures require two boring passes—the first to open the diameter, and the second for precision boring to achieve final dimension and surface finish requirements.

During face machining and chamfering, operators maintain consistent tool-entry angles to avoid irregular cutter marks. Upon finishing these steps, the components move to dimensional re-inspection. Inspectors use calipers, bore gauges, micrometers, and height gauges to record key measurements, entering all data into the production tracking log.

According to the schedule, the batch will proceed to deburring, cleaning, marking, and packaging after passing final inspection, and will be completed before the designated delivery deadline.

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