PARALLEL PROCESSING FOR ENGINE BLOCKS
 | Makino demonstrates the capability to machine a complete aluminum engine block in 4 operations.This process is completed on the A77 Horizontal Machining Center equipped with an automated material handling system. |
Part Description
4.0 liter V8 aluminum engine block with cast iron cylinder liners.
Process Highlights
- High-speed machining of oil seal tracks utilizing 18,000 rpm spindle
- High-speed bi-metallic milling of head deck and cylinder liners
- Closed-loop boring system using a Romicron boring head and Marposs probing system. This system provides the capability for in-process checks of cylinder bores and automatic adjustments of the boring bar to compensate for tool wear
- Makino’s patent pending Typhoon Tool will be used to machine accessory and cover mounting holes complete with chamfers and counter-bores to various depths
- Finish main bearing journals using a hydrostatically piloted boring bar. The patented hydrostatic design provides the rigidity and damping required to maintain dimensional and locational accuracy through a bore-index-bore process
- Hydrostatically piloted, coolant pressure actuated feedout head for machining the main bearing/crankshaft thrust face
Machine Features
- HSK100A 18,000 rpm spindle
- High pressure through-spindle coolant programmable from the CNC program
- Rapid feedrates up to 1,180 ipm
- Marposs Optical Interface Probing System with closed loop boring capability
| Tool Description | Vendor | Speed (SFM) | Feed (ipm) |
| G7 Drill | Kennametal/Accuromm | 1,350 | 200 |
| Seal track end mill | MC Carbide | 930 | 110 |
| Tapping head | Kennametal/Tapmatic | 100 | 43.5 |
| Head deck mill | Kennametal | 10,000 | 190 |
| Z-axis mill | Kennametal | 2,500 | 71 |
| Closed loop boring bar | Kennametal/Romicron | 1,000 | 21 |
| M10 x 1.5 Typhoon | Kennametal/Makino | 1,250 | 20 |
| Feedout head | Kennametal | 2,100 | 10 |
| Hydrostatic boring bar | Kennametal/Adaptive Technologies | 1,900 | 12.5 |