One of our customers was manufacturing hydraulic valve bodies made of Cast Iron grade 250 using a CNC horizontal milling machine. The valve bodies required recess in (8) positions, and previously the customer used a carbide cutter to interpolate each of the recesses individually. This was extremely time consuming with a cycle time of 20 minutes per bore.
After assessing our customer’s problem, we decided to recommend our Internal Recessing Unit. Here are the statistics of our IRU recessing operation:
- Speed: 300 RPM
- Cutting feed: 0.003”/rev (0.76mm/rev)
- Total cycle time: 15 seconds
- Tool life: 600 bores before regrinding
The IRU recessing system produced all (8) “land face” cuts in 1 pass, maintaining the 0.003” (0.07mm) positional tolerance between the grooves. The time savings was 19 minutes and 45 seconds or an 8,000% time savings. This time savings eliminated the need for our customer to purchase another expensive CNC horizontal milling machine.