SCIENCE AND TECHNOLOGY ENGLIAH FOR MECHANICAL ENGINEERING Automatic Dimension maintenance This method automatically ensures thereamer绞刀 attainment of the required machining accuracy without the need of trial cutting, broaches fiLTJ and measuring and correction of the cutting tool position tap丝锥,螺丝攻 There are different ways to automaticall obtain the required machining accuracy 1. Use of fixed dimension cutting tools. The required machining accuracy is obtained by using cutting tools with fixed shape and dimensions. such as reamers. broaches and tapsSCIENCE AND TECHNOLOGY ENGLISH FOR MECHANICAL ENGINEERING Automatic Dimension Maintenance This method automatically ensures the attainment of the required machining accuracy without the need of trial cutting, and measuring and correction of the cutting tool position. There are different ways to automatically obtain the required machining accuracy. l. Use of fixed dimension cutting tools. The required machining accuracy is obtained by using cutting tools with fixed shape and dimensions, such as reamers, broaches and taps. reamer 绞刀 tap 丝锥，螺丝攻 broaches 拉刀