Large Stroke Vertical Machining Center

Pre‑communication and process planning: We confirm with the customer the workpiece drawing, material (cast iron, steel, aluminum alloy), machining accuracy, and batch requirements. Based on the large‑span Z‑axis six‑slider structure, we formulate heavy‑cutting process parameters and output a technical solution that includes spindle selection and the 32T tool magazine option.

Contract signing and site preparation: Both parties sign a formal contract specifying delivery time, payment method, and a 12‑month warranty.

Long‑stroke component manufacturing and assembly: The foundry uses resin sand molding and performs tempering plus vibration aging on the bed, column, and table. The machining shop uses a five‑side gantry mill to finish the guideway mounting surfaces and ballscrew supports in one clamping. Then we assemble: X/Z‑axis 55‑type roller linear guideways (X‑axis dual‑rail six‑slider, Z‑axis six‑slider large‑span), Y‑axis 45‑type roller linear guideway; C3 class precision ballscrews (Φ50×P10) pre‑stretched to eliminate thermal elongation; BT40 long‑nose 150 spindle (speed selected by the customer) with standard oil cooling and ring coolant; and a disc‑type armless 24T tool magazine (optional 32T). Hydraulic system (tool unclamping and balancing), lubrication system, and rear flushing chip removal piping are connected.

Whole machine debugging and in‑house accuracy testing: After power‑on, we perform laser interferometer positioning accuracy compensation (target ≤0.005/300mm) and ballbar circular testing for all three axes. The machine runs no‑load for 48 hours while we monitor spindle temperature rise (≤15°C) and vibration. Using a typical workpiece provided by the customer (such as a large mold or box), we conduct test cutting and measure machining dimensions and surface roughness (Ra ≤1.6 μm).

Customer acceptance and shipment: We invite the customer to our factory or provide a high‑definition video of the test cutting process. After acceptance, the customer pays the remaining balance. The machine is rust‑proofed, reinforced in a wooden case (with vibration‑damping pads at the bottom), and shipped. An engineer travels with the machine to the customer's site, completes fine leveling after foundation grouting solidifies, calibrates spindle perpendicularity, provides one day of operation training, and signs the Installation and Commissioning Acceptance Document. Random documentation includes a paper accuracy inspection report, electronic system manual, and operation manual.