在利用钻排孔的方法加工大圆孔时,我们采取了以下简易措施,提高了工效,保证了质量,为下道工序提供了方便。先把欲除去的大圆孔中心钻一个小孔,将其套人钉在木板上的中心钉3上。在靠近大圆孔边缘的适当位置钻2～4个排孔,再钉一个短一些的定位销钉1,然后固定木垫板,用定位销钉控制转动角度。这样,减少了对 In the process of using large holes to drill hole processing, we have taken the following simple measures to improve work efficiency, to ensure the quality of the next process provides a convenient. Drill a small hole in the center of the big hole to be removed and set it on the center nail 3 on the board. Drill 2 to 4 rows of holes at appropriate locations near the edge of the large circular hole, and then staple a shorter one to pin 1. Then fix the wooden backing plate and use the pin to control the rotation angle. This reduces the right