Raising block
In VMC (Vertical Machining Center) terminology, a raising block (also called a riser block or spacer block) is a precision-machined component used to elevate workpieces or tooling or column for machining operations.
Purpose of a Raising Block in VMC
- Workpiece Elevation – Raises low workpieces to proper spindle alignment.
- Tool Extension – Increases reach for shorter tools in deep cavities.
- Fixture Support – Provides height for jigs/vises while maintaining stability.
- Workpiece Height Elevation – Raises column for higher distance from spindle nose to table surface.
Types of Raising Blocks
| Type |
Description |
Material |
| Solid Precision Blocks |
Hardened for maximum rigidity |
Steel, Aluminum |
| Adjustable Risers |
Allow fine height tuning |
Steel with locking mechanism |
| T-Slot Compatible |
Designed to mount in machine T-slots |
Cast Iron, Steel |
Key Considerations
- ✔ Rigidity – Must minimize vibration during cuts.
- ✔ Flatness & Parallelism – Critical for machining accuracy.
- ✔ Material – Steel for heavy-duty, aluminum for lightweight needs.
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| 2025 |
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Update Date: 2025-09-16 10:06:19
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