Shock valve holes

Objective

A fast and reliable process ensuring that the tolerances are achieved in the most efficient way. A typical challenge is to meet the demands for a good surface quality.

 

Result

One-shot drill with extra guide pads and C7 PLUS™ coating creating a straight hole with excellent surface quality while maintaining high feed and long tool life. The C3-coated thread milling cutter ensures a reliable threading process.

 

Machining process

 

 Step 1: SC step drill

 

Step 1: Solid carbide step drill

Drawing no. 12861/999989, N = 1794 rpm, Fn = 0.35 mm/rev.

 

 Step 2: Thread milling cutter

 

Step 2: Thread milling cutter

Drawing no. 256910.12x15