JNYO Boring and Milling Power Heads Support Boring, Milling, Drilling, and More

JNYO boring and milling power heads are key functional components in modern machine tools. They integrate main-motion and feed systems to support boring, milling, drilling, and other processes. Their design combines mechanical transmission, servo control, and precision manufacturing, making them suitable for batch machining of complex components.

System Configuration

1. Main-motion system: A three-phase asynchronous motor supplies power, which is transmitted to the spindle through a synchronous toothed belt and splined shaft. Some models use pulley changes to adjust speed for different materials and processes.
2. Feed system: A servo motor and reducer drive linear movement through high-precision guideways. Ram travel can reach several hundred millimeters to support deep-hole machining. Balancing cylinders at both ends of the slide block receive oil from the hydraulic station to offset gravity and stabilize ram movement.
3. Indexing and positioning: During multi-station machining, a dedicated mechanism drives the worktable or spindle for accurate angle or displacement changes. High-resolution encoders and closed-loop control support repeat-positioning accuracy at the micrometer level.
4. Combined-process integration: On a turn-mill machine, a servo-driven power head can be installed on a driven tool turret and work with a C-axis head and sub-spindle to complete drilling, tapping, and end-face slotting. The modular design gives one machine multiple process capabilities.

Operating Precautions

1. Before operation: Check that the oil pump supplies oil normally. If the sight glass shows no oil, stop and inspect immediately. Remove chips and foreign matter from the worktable and surrounding area, and clamp the workpiece securely to prevent movement or ejection.
2. Speed changes: Never change speed while the spindle is rotating continuously. Rotate the tool disc or spindle manually or with the electrical drive as specified before changing speed; sudden speed changes can damage gears and bearings.
3. Feed and clamping: Release the milling-head clamping handle before feeding, then clamp it again after the feed is complete. This helps prevent tool breakage or spindle deformation.
4. Feed travel and reversing: Do not drive the table into either end position during rapid or automatic feed, as this may damage the lead screw. Place the reversing handle in neutral before changing direction; never reverse directly.
5. Routine maintenance: Clean dust, oil, and chips from the power head, especially the heat-sink fins. Replace oil and grease according to the manual, lubricate all points properly, and check seals for leakage.