Patent ID: 9592556
Date: 2017-03-14
CPC Classifications: B23B,B23Q,Y10T

Claim:
1. A processing machine comprising: a main spindle; a guide bush; and a supporting base at a front section of said processing machine with respect to an axial direction of said main spindle, said supporting base supporting said guide bush in a removable manner; wherein said main spindle is located in a rear position of said guide bush with respect to the axial direction when said guide bush is attached to said supporting base, and said main spindle is located in a position of said guide bush whereat said guide bush had been located in a front position with respect to the axial direction when said guide bush is removed from said supporting base; wherein said supporting base has a fixed seal member contacting an outer circumferential surface of one of said main spindle or a main spindle cover over an entire circumference of said one of said main spindle, said main spindle cover, or said main spindle base when said main spindle is disposed in the front position; wherein said seal member is located outside of an outer circumferential surface of said guide bush when said guide bush is attached to said supporting base; and wherein an inner diameter of said seal member in a relaxed state is smaller than an outer diameter of said one of said main spindle, said main spindle cover, or said main spindle base.