VMC-168C Vertical Machining Center

Mechanical properties

• Aigma's three-axis guideways feature a hardened design, offering heavy-duty cutting capabilities and high rigidity. They absorb most of the cutting reaction forces generated during cutting while maintaining sensitivity comparable to linear guideways. To meet the diverse processing needs of today's customers, we conduct practical processing tests on some difficult-to-machine materials. Our aim is to better meet the needs of customers at all levels, hoping to create a win-win situation for both supply and demand.
• Overall high rigidity structure
  The three-axis track adopts a hardened rail design. The head, body, saddle, base, worktable and column are all made of high-grade Meehanite cast iron and have undergone stress relief treatment, resulting in stable mechanical precision and excellent rigidity.

	Optimal spindle rigidity (VMC-137) The sleeve-type spindle design provides belt-driven spindles at 6,000/8,000/10,000 rpm, and the short nose spindle bearing is effectively supported by the bushing and head casting, which greatly improves the spindle rigidity. Combined with the extremely rigid head, it can absorb most of the vibration and prevent poor machining surface due to tool vibration.
	Excellent triaxial support design (VMC-137) All three axes use C3-grade double-nut preloaded precision ball screws, combined with the pre-tension design of the support seats at both ends, which can eliminate transmission backlash and pre-compensate for errors caused by temperature rise, ensuring positioning accuracy and repeatability.
	Thoughtful chip removal device (VMC-137) The unique triple-helix chip removal design reduces the time and cost of chip handling, lightens the operator's workload outside of production, and effectively removes iron filings generated during processing.
	Belt head (VMC-137) The robust head design, with the optimal golden ratio between the contact surface between the head and the column rail and the distance between the two rails, effectively showcases the machine's rigidity.
	Large-span column design (VMC-137) The four-rail integrated base, combined with the large-span column design, greatly increases the contact area between the column and the base, strengthening the head support design; and the column adopts a honeycomb structure, which can minimize the amount of torsional deformation generated during machine use.
	A high-horsepower spindle suitable for heavy cutting (VMC-168) is available. The sleeve-type spindle design provides a 4,000/6,000 rpm geared spindle, and the short nose spindle bearing is effectively supported by the bushing and head casting, which can greatly improve the spindle rigidity. With the option of a high-horsepower spindle motor, the maximum metal cutting rate can be achieved. With the spindle cooling system, the temperature rise of the bearing can be reduced and the spindle life can be extended.
	Belt head (VMC-168) It offers three different spindle designs, combined with a modular head design, and features belt-driven spindles with speeds of 6,000/8,000/10,000 rpm. The dynamically balanced pulleys and high-tension toothed belts ensure smooth operation even at high speeds.
	X-axis spiral chip conveyor (VMC-168) It facilitates the removal and collection of metal filings, keeping the machine's working area clean.
	Gear head (VMC-168) The two-stage gear design allows the spindle to run smoothly. The transmission gears are made of Japanese chromium-molybdenum alloy steel that has been hardened and precision ground, ensuring quiet and smooth spindle operation. The spindle adopts a floating tool-changing design to extend the life of the spindle bearings.
	Excellent base design (VMC-168) The VMC-158 base features a unique closed box-shaped structure with round holes, which not only prevents excessive deformation during the manufacturing process due to heat treatment, but also provides stability for future customer use.
	PMC Notary Office Laser Measurement and Testing Agma commissioned PMC to conduct 100% inspection of the three-axis travel portion of the machine tool. The inspection standard is VDI 3441 3, which involves six full-stroke inspections in both directions to ensure the accuracy of the machine tool and the impartiality of the inspection.
	Heavy-duty knife full-cut test The rapid tool changer, combined with the precise drive of the cam mechanism, ensures fast and stable tool changing accuracy within 0.01mm, without affecting the clamping accuracy between the spindle and the tool taper. The cam mechanism's tool magazine ensures high-precision rotation, and each machine undergoes a full-load test with heavy-duty tools to ensure smooth operation even when using heavy-duty tools.
	Circular Measurement Inspection A circularity measuring instrument/Renishaw is used to calibrate the roundness and geometric accuracy of the machine tool, thereby ensuring the motion accuracy of the machine tool.
	Shovel work Japanese-style scraping technology, combined with unique *-shaped scraping and Z-shaped oil grooves, creates a uniform oil film on the sliding surface, eliminating floating phenomena during rapid movement and stickiness during the start of cutting feed.
	Volumetric oil distributor It adopts the Japanese SHOWA volumetric oil distributor, combined with aluminum alloy oil pipes, to evenly distribute the oil injection points, so that the oil injection volume at the far and near ends is uniform, preventing uneven lubrication of the sliding surface.

Mechanical Specifications