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close this bookWorking on Grinding Machines (Belt Grinding Machines) - Course: Mechanical Woodworking Techniques. Instruction Examples for Practical Vocational Training
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View the documentPreliminary Remarks
View the documentInstruction Example 07.1.: Stool Plate
View the documentInstruction Example 07.2.: Stool Plate
View the documentInstruction Example 07.3.: Stool Plate
View the documentInstruction Example 07.4.: Door-Frame

Instruction Example 07.2.: Stool Plate

Smooth and thickness grinding of the wide surfaces by grindig as the prerequisite for sticking with veneer is carried out on a fibre board.

Material

a fibre board

length:

480 mm

width:

480 mm

thickness:

18 mm


Figure

Machines and tools

Normal belt grinding machine, sand belt with a corundum EK 32 or EK 40

Measuring and testing means

Folding rule

Necessary basic knowledge

Working on circular sawing machines

Sequence of operations

Comments

1. Placing and fastening the sand belt with a selected corundum EK 32 or EK 40

Abrasives of precious corundum, abbreviation EK, are applied with the grinding of fibre boards and veneer material. The grain size is selected according to the desired surface smoothness. The fastened belt should be able to be pressed by hand only slightly. Cover the belt rollers and the upper part of the sand belt.

2. Placing the piece of work on the stop of the sliding table and fixing the height of the table.

The piece of work should sit fast with the stop to avoid a slinging off by the draft of the sand belt.

3. Switching-on the machine.


4. Grinding the wide surfaces with the pressure shoe.

Be careful when grinding the edges, the pressure shoe can topple over. Do not lead the pressure shoe to far over the edges otherwise they will be round ground.

5. Switching-off the machine.


6. Checking the grinded wide surfaces

The wide surfaces should be even and slightly rough.

Finishing

Sticking the wide and narrow surfaces with veneer, grinding and chamfering the edges. Application as a stool plate.