With the dawn of the Showa era, SOUL, a company renowned for its craftsmanship, pioneered the domestic production of scroll chucks, supporting Japanese manufacturing throughout the pre-war and post-war periods. In particular, its mass-production design chucks, developed through a technical partnership with Woodworth of the United States, have evolved daily alongside the development of small-scale motorization in Japan.
 
Automobiles are made up of various parts, and the production of these parts requires machinery and equipment that can maintain stable precision under harsh conditions.
 
Design chucks are specialized chucks, so "quality, price, delivery time, and after-sales service" are often the main concerns. However, Teikoku Chuck boasts the No. 1 delivery record in Japan by actively responding to the diversifying and sophisticated needs of users through IT advancements, including 35 years of accumulated know-how in design chucks, a CAD drawing management system that can reproduce the first delivery, and a barcode input production management system that manages the progress of each component with different parts and enables short delivery times.

The UBL-6JAW CENT/COMP is a shaft-specific chuck designed for automated production lines of long shaft workpieces with different diameters at both ends. It allows for all machining processes to be performed on a single NC lathe with a work rest and tail center configuration, whereas conventional systems required three machines. This design saves labor and space.
 
Typically, mass production of shafts requires three separate machines: (1) machining of both end faces and the center hole of the workpiece; (2) machining of the outer circumference with one end held in a competition-type chuck with both centers supported; and (3) machining of the gripped portion from (2) with the other end held in the same configuration.
 
The UBL-6JAW allows for the following processes to be completed on a single NC lathe: (1) The larger diameter side is centered and gripped using 3 jaws based on the end face, supported by a work rest, and after machining the end face and center hole, the outer circumference is machined with support from both centers. (2) The workpiece is then flipped over by a robot. (3) The smaller diameter side is gripped using the center on the chuck side as the reference point, and the entire process is completed in the same manner. At the customer's site, multiple types of shaft workpieces are produced by changing the jaw pieces and stoppers.

Thin-walled cylindrical workpieces deform with even slight force, making them difficult to work with in high precision, even when gripping the rigid end faces with face clamps, let alone the outer circumference.
 
The Multi-Jaw Chuck is a revolutionary chuck designed for thin-walled workpieces, featuring our unique float mechanism and multiple jaws that grip the outer periphery of uneven, thin-walled workpieces with strong and even force, providing rigidity to the workpiece and enabling high circular accuracy under the same processing conditions as for thick-walled workpieces.
 
We offer a high degree of flexibility to meet the diverse processing conditions and requests of our customers, primarily those working on automotive parts, including combinations with centering chucks and multi-jaws with built-in centering mechanisms. Although we produce single, custom-made parts, which can be time-consuming, we can meet short lead times. Our products contribute to improving product quality and productivity by providing high-precision finishing for thin-walled automotive parts such as brake drums and automatic transmission components.