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	Types of Finishing What is a Barrel Finishing? Barrel Finishing Machines Abrasive Media Compounds Q&A Examples of work pieces applicable to barrel finishing		Top Page > Barrel Finishing > Introduction to Barrel Finishing > Barrel Finishing Machines Main Functions and Features Category Type Aggressiveness in stock removal Loading amount Features     General-purpose Machine Centrifugal Barrel 30 to 40 40% to 60% A hexagonal or octagonal shaped barrel revolves giving a centrifugal force to the contents which enhances finishing performance significantly. However, as this may also cause part-on-part impingement inside barrels and sometimes damages to work pieces so preventative measures may be necessary. For Details Click Here Click here to see a motion picture. (MPG/3,700KB) General-purpose Machine Centrifugal Disc 10 to 15 40% to 50% A rotating disc is situated at the bottom of a stationary tub. As the disc rotates it generates a cyclone eddy flow. Finishing aggressiveness of this machine is classified between Centrifugal Barrel Finishing Machine and Vibratory Barrel Finishing Machines. It is easy to operate and easily automated. For Details Click Here Click here to see a motion picture. (MPG/6,090KB) General-purpose Machine Vibratory barrel 1.5 to 2 80% to 100% A vibratory motor and a bowl are mounted on springs. The motor shaft is mounted with eccentric weights on both the top and bottom. Flow is generated and adjusted by the frequency of motor rpm. The flow speed is slow but the friction force created is large due to the acceleration generated by vibrations. High capacity and efficiency is achieved thus a superior choice for mass production. For Details Click Here Click here to see a motion picture. (MPG/3,650KB) General-purpose Machine Rotary Barrel 1 40% to 60% An octagonal shaped barrel rotates at a relatively low speed generating a sliding layer. Finishing aggressiveness is rather low but operation efficiency is high which contributes to lower labor costs. Though it is quite simple in structure, it is the original type of barrel finishing machines and is widely used. For Details Click Here Click here to see a motion picture. (MPG/3,200KB) Specialized Machine Gyro Finishers, Brushing Machines one or several work pieces are fixed to finish     * Charging ratio: The ratio of the contents volume to the barrel capacity To view the motion pictures, either Windows Media Player or Quick Time is needed. Click the icon to download. (A separate window will open.) Windows Media Player Quick Time   Finishing Machine Selection Criteria • Finishing time • Production volume • Raw Materials of work pieces (hardness) • Dimension and shape of work pieces • Difference of the surface status before and after finishing Motion Structure and Pattern Chart of Major Finishing Machines Centrifugal Barrel     Rotary Barrel     As for the Centrifugal Barrel, a main shaft and the barrel shafts are mounted on the same pulley. As the pulley rotates a planetary motion is generated. This revolution generates the centrifugal force and a strong pressure in the barrel. As for the Rotary Barrel, the contents are churned upwards toward the top and slides downwards due to the gravitational force. * The motion of the contents in a rotary barrel and a centrifugal barrel are the same. Centrifugal Disc Finishing As the disc rotates a centrifugal force is generated and the accelerated contents rise upwards along the sidewall of the stationary tub. Then at the top dead center, the contents lose the upward acceleration and flow downwards like an eddy flow due to the gravitational force.   Vibratory Barrel A vibratory motor, mounted with eccentric weights, generates 3D vibratory movement as it rotates on its axis. This generates a vibrating spiral movement of the contents.     * Reproduction prohibited To Introduction to Barrel Finishing

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