Page 87 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

16 Maintain V groove using flat second cut file.
17 Check V groove 90 degree angle using protractor head or Vernier bevel protractor.
18 Maintain depth of v groove 25mm.
19 Prepare square slot 10mm breadth and 5mm depth using square file.

20 Check and maintain square slot 10mm breadth, 70 length and 5mm depth.
21 Cut other side slot 70x60x10 mm using hacksaw.
22 Finish and check side slot 70x60x10 mm.
23 Maintain v block size 100x70x70mm as per drawing using second cut file.
24 Check the size using Vernier caliper with accuracy 0.02mm.

25 Remove sharp edge/ burrs of surfaces.
26 Oil and pack with oil paper.
Bill of Metal
Cast Iron Block 105x75x75 mm

Safety precautions
1 Handle lathe machine under guidance of trainer.
2 Hold the job in 4 jaw chuck properly.
3 True ( concentric) the job carefully using marking block.

4 Set proper height of turning tool in the tool post.
5 Check perpendicularity of machined surface.
6 Remove burrs/sharp edge after machining.
7 Grind turning tool carefully.

8 Clean and oiling to the sliding surface of lathe machine after working.
9 Cut the v groove with slant hacksawing carefully.
10 Don’t use file without handle.
11 Handle carefully to precision measuring tools.
12 Check zero error of Vernier caliper before using.

13 Clean all the tools such as marking, cutting and measuring tools after work.

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CITS : CG & M - Fitter - Exercise 25