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close this bookOperations with Shaping Machines - Course: Mechanical Woodworking Techniques. Instruction Examples for Practical Vocational Training
View the document(introduction...)
View the documentPreliminary Remarks
View the documentInstruction Example 4.1.: Workpiece with Fold
View the documentInstruction Example 4.2.: Workpiece with Groove
View the documentInstruction Example 4.3.: Workpiece with Tenon
View the documentInstruction Example 4.4.: Workpiece with Quarter Chamfer
View the documentInstruction Example 4.5.: Workpiece with Quarter Round Chamfer

Instruction Example 4.2.: Workpiece with Groove

Practise the accurate and sound setting up of a shaping machine and become acquainted with the work technique “slot milling” on solid wood pieces.


Figure

Material

Solid wood, levelled and milled to a thickness of 20 mm, small faces rectangularly abutted

Dimensions:

Minimum length 350 mm
Minimum width 80 mm

Machines and tools

Shaping machine, slot mill with 6 mm working width

Measuring and testing means

Folding role

Aids and labour safety knowledge

Steel strip deflector

Necessary preliminary knowledge

Assembly and function of the shaping machine, basic labour safety provisions when using the shaping machine, knowledge and expertise when setting up a shaping machine, knowledge of chucking processes when handling solid wood, reading drawings, measuring and testing.

Sequence of operations

Comments

1. Position work material and tools.
Place the reference faces firmly along the work-piece.

Check for completeness and proper condition.

2. Chuck the tool firmly to the lower part of the cutter arbor, subsequently remove the locating pin from the spindle.

Rotational direction of the tool must be directed against feed motion of the workpiece (counter rotation), otherwise high risk of accidents!

3. Set the measure (7 mm) of the slot cheek between machine table and lower tool edge.

Untighten the milling support, set the measure, then again arrest the milling support.

4. Set the slot depth.

Workpiece is positioned paralled to the stop faces by a fully turned out cutting edge of the tool and the required measure is set on the guide rule. Next arrest the guide rule and align the stop faces to the tool diameter.

5. Tighten the steel strip.

The steel strip deflector is so positioned that there is no manual contact with the tool, however the work process - milling - is not impeded.

6. Check the machine in respect of labour safety stipulations.

Ensure work-table cleanliness. Once again check tool, stop and steel strip deflector for sound positioning and spindle as regards true running.

7. Switch on the exhaust and the main machine switch, preselect the spindle speed (4500 min-1) and switch on the machine.

Ensure correct rotational direction of the spindle, incorrect rotational movement can cause serious accidents!

8. Milling a groove.

Position the workpiece with the broad reference face on the machine table and the narrow reference face to the guide rule and slowly and evenly bring the tool into place.

9. Switch on machine, main switch and exhaust facility.

10. Dimensional control and checking of the groove quality.

Watch out for chipped edges. These may be caused by blunt tools or a too rapid rate of feed!

Possible addition

A slot can also be milled into the opposite narrow face.


Figure