As high-mix, low-volume production continues to grow, reducing setup time for NC lathes has become a critical factor in improving overall production efficiency.

In particular, chuck replacement presents several challenges:
▲ Centering adjustment requires significant time
▲ High accuracy depends on skilled operators
▲ The machine must be completely stopped during replacement

In Southeast Asia, it is becoming increasingly difficult to secure skilled workers and transfer technical know-how to the next generation. As a result, manufacturers face a major challenge in establishing setup processes that do not depend on individual expertise. To address these issues, the ultra-fast chuck change system VC System was jointly developed by Kitagawa Corporation and Riken Seiki Co., Ltd.

What is the VC System that enables setup changeovers in as fast as three minutes?

The ultra-fast chuck change VC System is a chuck replacement system designed to significantly reduce setup time and maximize the operational efficiency of NC lathes.

With conventional chuck replacement, runout adjustment (centering) was required after installation. By using the VC System, centering adjustment is no longer necessary. Even operators with limited experience can easily replace the chuck using only a hex wrench. Because a single lathe can quickly switch between different chucks, the system also contributes to process integration and space-saving. It is particularly effective in high-mix, low-volume production environments, helping manufacturers reduce setup time and address labor shortages. Even without highly skilled technicians, the system enables stable and highly repeatable machining accuracy.

Easy chuck replacement with a hex wrench — no troublesome centering required

✔︎ Simple, fast, and high-precision setup changeovers
The system features a two-layer structure consisting of a base unit and a chuck unit. By simply attaching or removing the chuck unit with a hex wrench, the chuck can be replaced quickly and easily.

✔︎ No centering adjustment required
The mounting surfaces between the base unit and the chuck unit are designed with a precision two-surface constraint. As a result, even operators with limited experience can achieve proper centering simply by tightening the bolts

✔︎ Handle a wide range of workpieces with a single lathe
Because different types of chucks can be replaced quickly and easily, multiple machining processes can be consolidated into one machine.

▲ A wide range of attachment options for highly versatile applications

VC System Implementation Case Study | Automotive Parts Manufacturer (Assembly Process)

【Voice from the Shop Floor】

Setup Operator:
“The chuck can be replaced easily and accurately without special tools.
Because centering adjustment is no longer required, the pressure of rushing through setup work has been greatly reduced.”

Machine Operator:
“In the past, we sometimes had to wait more than half a day before the machine could be put back into operation.
After introducing the VC System, operations can resume quickly, and the machines are now running at full capacity.”