 | Setting-up and Operating of Regular Engine Lathes - Course: Techniques for Machining of Material. Instruction Examples for Practical Vocational Training |
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Instruction example 1.2.: Selection of the working means
Demonstrated by the example of the manufacture of a pump shaft on a regular engine lathe.
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Required previous knowledge
Read the drawing, kinds and application of the clamping and auxiliary means.
Explanations of the workshop sketch
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Surface quality: finished |
M24 x 1.5 |
M = metric thread | |
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24 = nominal diameter | |
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1.5 = pitch | |
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Ø 40 h7: 40 |
= nominal diameter |
A4 x 0.3 |
A = recess at the diameter |
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h |
= standard shaft |
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4 = width of the recess in mm |
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7 |
= quality | |
0.3 = depth of the recess below final size |
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Sequence of operations |
Remarks |
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1. Setting the driving plate |
Length of the pin of the driving plate max. 24 mm, because the Ø 52, Ø 42 and Ø 24 are made at one setting. |
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2. Selecting and clamping a firm centre |
After having placed the centre, it has to be checked as to true running and, if necessary, to be corrected. |
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3. Placing the lathe carrier at disposal |
Select the lathe carrier corresponding to the diameter of the reception. |
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4. Right curved side cutting turning tool (3 mm width) |
Making available various shims for placing the tool at centre. |
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5. Thread groove parting-off tool |
To be selected according to the data of the drawing. |
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6. Right-curved roughing lathe tool |
Visual inspection of the cutting edges. |
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7. Setting the tailstock |
Pay attention to correct clamping. |
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8. Selecting the live centre |
Select the machine taper corresponding to the quill of the tailstock, check the true running of the centre. |
Selection of the working means
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