MOUNTING BLOCK

Mounting Block Machining

A mounting block is typically manufactured from aluminium, mild steel, EN8/C45, or another material specified on the drawing. The machining process depends on the block geometry and hole pattern.

Typical manufacturing process

1. Raw material preparation

• Select plate or rectangular bar according to the drawing.
• Cut the material with machining allowance on all side.

2. First setup – CNC/VMC

• Clamp the workpiece securely.
• Face mill the top surface.
• Machine the reference datum surfaces.
• Rough and finish the outside profile.

3. Hole machining

• Spot drill all hole locations.
• Drill through/blind holes.
• Ream holes where close tolerance is required.
• Tap threaded holes according to the drawing.

1. Pocket/slot machining

• Rough mill pockets and slots.
• Finish mill walls and floors.
• Machine counterbores/countersinks if specified.

1. Second setup

• Re-clamp using the finished datum surfaces.
• Machine the remaining faces.
• Bring the overall thickness and critical dimensions to final size.
• Machine holes/features from the opposite side if required.

1. Deburring

• Remove all machining burrs.
• Break sharp edges/chamfer as specified.

1. Surface treatment

• Aluminium: anodizing if required.
• Steel: black oxide, zinc plating, painting, etc., depending on specification.

1. Final inspection

• Overall length, width and thickness.
• Hole diameter and position.
• Thread size and depth.
• Pocket/slot dimensions.
• Flatness, perpendicularity and parallelism.
• Check the component against the mating assembly.

Typical process flow

Raw material → Saw cutting → Face milling → Datum machining → Profile milling → Drilling → Tapping → Pocket/slot milling → Finishing → Deburring → Surface treatment → Inspection