| 摘要 |
PURPOSE:To get rid of any deflection as well as to form it into such a stone surface that is excellent sharpness, by setting the extent of truing frequency for a grindstone, while making a feed pitch of a truer per rotation smaller other than the last time and the feed pitch of the truer per rotation larger at the last one time alone. CONSTITUTION:Traverse frequency (n) (truing frequency) of a truer 22 is set up by an input unit 41, and it is stored in a memory 33. Next, the truer 22 is rotated at high speed, making it go forward in rapid traverse to a grindstone 12, and further infeed is given to the stone, whereby truing takes place with the set traverse frequency n-1. With this, since a truing quantity per reciprocation of a traverse 1 is much enough, deflection of the grindstone is removed. In succession, a revolving speed of the truer 22 is controlled to be low speed, giving infeed to it, the last one time traverse is carried out. With this constitution, since a feed pitch of the truer in the traverse direction per rotation is large enough, such a stone surface that is excellent in sharpness is formed.
|
