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close this bookBending - Course: Technique of Working Sheet Metals, Pipes and Sections. Instruction Examples for Practical Vocational Training
View the document(introduction...)
View the documentPreliminary Remarks
View the documentInstruction Example 14.1.: Mounting Angle
View the documentInstruction Example 14.2.: Half-round Bracket
View the documentInstruction Example 14.3.: Hasp
View the documentInstruction Example 14.4.: Double Pipe Knee
View the documentInstruction Example 14.5.: Beaker Jacket
View the documentInstruction Example 14.6.: Beaker

Instruction Example 14.1.: Mounting Angle

Practise the folding of thin sheet metals on the vise with and without hammers.


Figure

Material

Sheet steel

(380 MPa) 1

thickness:

1 mm

width:

60 mm

length:

165 mm



Sheet steel

(380 MPa) 2

thickness:

2 mm

width:

20 mm

length:

155 mm

Tools

Steel scriber, centre punch, smooth file 200 mm (flat), light metal hammer, machinist's hammer

Measuring and testing means

Vernier caliper, steel rule, steel square

Auxiliary means

Surface plate, vise, bending plate, intermediate plate 40 × 40

Previous knowledge required

Manual material working: Measuring, testing, scribing, punching, filing, shearing

Sequence of operations

Comments

1. Prepare the working place and make available working material.

Check completeness.

2. Check initial sizes of sheets. If need be, cut to size, deburr and straighten.


3. Scribe bending edges of sheet (1) and sheet (2).

Scribe on internal sides.

4. Clamp sheet (1) in vise and bend with your ball of the thumb and, if need be, use bending plate.

Strike bending edge with light metal hammer.

5. Clamp sheet (2) in vise and fold first bending edge with light metal hammer.

Strike hammer directly against bending edge. Strike against the fixed vise jaw.

6. Reclamp sheet (2) with intermediate plate in vise and fold second bending edge.

If need be, strike bending edges with hammer face of machinist's hammer.

7. Check bending edges.

- Accuracy to size


- Angularity


- Shape

8. Drill the workpiece.

Ask the instructor as for drilling sizes.


Mounting angle