Shandong Jingzuan Precision Machinery Co., Ltd. will appear at Qingdao International Machine Tool Show from July 18th to 22nd. Welcome to pay attention! Fine-drilling deep holes Meet you for a beer and

1. Deep hole In the machinery manufacturing industry, cylindrical holes with a hole depth of more than 10 times the hole diameter are generally called deep holes. According to the ratio of hole depth t

Polishing skills and process of easy-to-use drills: ①Basic points: (1) The grinding wheel should rotate smoothly (2) The circumference should be flat (3) Large amount of runout must be trimmed ②Spe

Maintenance of drill bits 1. When drilling steel parts, please ensure sufficient cooling and use metal cutting fluid. 2. Good drill pipe rigidity and rail clearance can improve the accuracy of drilling