Marubeni Citizen-Cincom Introduces the K16 CNC Automatic Swiss Type Lathe

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Marubeni Citizen-Cincom, Inc. is proud to introduce the new K16 CNC Automatic Swiss-Type Lathe, the newest generation machine designed and built by CITIZEN. The highly precise K-series machines have been engineered with speed and productivity in mind. The tool layout concept allows the K-series machines to use the virtual X/Y axis movement, providing greatly reduced thermal growth displacement.

The K16 provides a dramatically increased productivity compared to that of conventional lathes. This is attributable to a number of factors that were engineered into this highly precise machine.

The K series was also developed to enhance machine performance offering a quick and smooth part process.

Two independent tool posts can move at the same time and in the same direction to reduce non-cutting idle time. For example, the machine does not need to wait for a tool post to return to a waiting position for the other tool post to start the next process.

In any thread cutting operation, one axis can be programmed to start its travel while the other axis is still completing its task. This overlapping axis function alone reduces idle time by 40% to 50% with minimum vibration.

Spindle indexing can now be achieved from a high speed rotation and stop directly at the desired degreed position instantly, thus greatly reducing cycle time. With this direct spindle indexing function there is no need to wait for the spindle to decelerate then stop at zero point before indexing.

The new Fanuc FS31i control on the K-series provides faster mathematical processing thus reducing the interpolation period half as that of the conventional machine. Processing improvements on the control ladder is three times faster as that of conventional lathes. The Fanuc control system is also built into the machine. This provides a streamlined and compact appearance.

The Citizen K-series CINCOMs have a rapid feed rate of 32meters per min. RPM Acceleration and Deceleration of the main spindle is 1 _ times faster than that of a conventional lathe.

The tool layout concept allows the K-series machines to use the virtual X/Y axis movement similar to that of the Citizen B-series. This configuration has proven to be responsible for greatly reducing thermal growth displacement. Slides and heads now have higher rigidity enabling heavier cuts to be performed at longer lengths of time.

The CINCOM K-16 type VII can perform secondary machining operations with a standard X and Z axis on the back spindle, allowing simultaneous machining capability. The K-series also has a centralized ball screw lubrication system and air seals on the back spindle.

Marubeni Citizen-Cincom was founded in 1984 to market and service Citizen’s CINCOM (CItizen Numerically COntrolled Machines) family of Swiss-type turning centers. This venture represents the amalgamation of two of Japan’s largest and most highly regarded companies, Marubeni Corp. and Citizen Watch Company.

Since its inception, MCC has successfully made CINCOM machines the most widely accepted Swiss-type turning centers in the world. These machines are used extensively to manufacture an array of products, including medical instruments, electronics, fiber optics, automobiles, business machines, aerospace, defense, firearms, tools, valves, fasteners, and many others.

In the US, MCC is headquartered in Allendale, NJ, and maintains sales-service offices in both California and Illinois. These three offices are responsible for supporting a nationwide network of 26 distributors located throughout the United States.

For more information on the K16 as well as the full line of Citizen Machines and for the Distributor closest to you, please log on

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Bill Papp
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