New boring bars for fine boring, mechanic, knife
JANUARY 4, 1971 - The employees of the national company NARADI in Hulin have developed a new type of boring bars for fine boring with direct dimension adjustment. The tools are designed for horizontal boring machines in order to increase their performance, accuracy and quality of bored holes, The adjustment is possible with an accuracy of 0.005 mm and can be used to drill holes from 22 mm to 120 mm in diameter. Installation of the knife units in boring bars. (CTK Photo/Frantisek Nesvadba)
Picture No
14002014
Media ID
45429701
Size
6623px x 6678px
(18.7MB)
Credit
© CTK Photobank / Mary Evans
Source
Frantisek Nesvadba - CTK
Date
1971
