PANNEL DIE FOR SERRATION SHAFT

摘要

PURPOSE: A panel-type dice for a serration shaft is provided to enhance inserted performance by narrow external and frame diameters in connection with a target since a serration is formed so that the difference between the external thickness and the internal thickness is over at least 5/10mm. CONSTITUTION: A panel-type dice for a serration shaft consists of a serration(20) and two panel-type dices(10). A round rod is located between the two dices. The dice is alternately moved. The external part(21) of the serration is thicker than the internal part(22). Using the thickness difference between the external and internal parts of the serration, the external and frame diameters of the serration are formed to form a narrow stepped part.