Sleeve
Advancements
Manufacturers are continually pushing the envelope in regards to what can be accomplished with the single pass Process. Improved tool, fixture and machine designs have allowed for increased production rates as well as improved bore precision. The followings are some of the latest advancements that have been made.
Step Bore
As illustrated in the following case history, Step Bore tool can process two concentric diame- ters simultaneously. Our step bore tool will help you to improve concentricity between bores and when followed with blind bore and step bore tools, can achieve superior geometry and surface finish.
Case History: 1
| Material | 2lNiCrMo2 | Hardness | 55-60 HRC | |
| Bore Type | Step Bore | Stock Removal | 0.O40mm | |
| l/P Diameter | ø 15.26 (+0.01) | ø 15.96(+0.01) | Length | l03mm |
| Tool 1 | ø 15.276 | ø 15.978 | Grit | BV |
| Tool 2 | ø 15.286 | ø 15.988 | Grit | BV |
| Tool 3 | ø 15.294 | ø 15.996 | Grit | BV |
| Tool 4 | ø 15.299 | ø 16.001 | Grit | BV |
| Tool 5 | ø 15.302 | ø 16.004 | Grit | BV |
| Tool 6 | ø 15.304 | ø 16.006 | Grit | BS |
| BORE DIMENSIONS | REQUIRED | ACHIEVED | ||
| Size | ø15.3(+0.011) | ø16(+0.011) | ø15.304 | ø16.006 |
| Cylindricity | - | 0.OO5mm | - | O.OO3mm |
| Total Runout | O.OO5mm | - | O.OO2mm | - |
| Surface Finish | O.4 Ra | O.3 Ra | ||
| Machine Type | AB 608 (6-Spindie 8-Station) |
| Coolant | ABHI HONING OIL (AB 15O) |
| Production | 82 Nos / Hour |
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