Machine Shop Projects By South Bend Lathe Works

machine shop
PROJECTS
South Bend Lathe Works
reprinted by Lindsay Publications Inc

MACHINE SHOP PROJECTS
Copyright 1954 by South Bend Lathe Works. All rights reserved. Price $2.00
The projects illustrated and described in this book are intended to help students in vocational and industrial schools in learning basic machining skills Project 13, 1" Bolt and Nut, is a typical example. The drawing shows the assembly and details of the bolt and nut and the description outlines the operations in the sequence that the student follows. The procedure is similar to that used in in¬ dustrial plants throughout the country, not only in training apprentices but in regular production work.
The book "How to Run a Lathe" is to be used in conjunction with this ma¬ chine shop project book. It gives necessary detailed instructions for the various operations called for in the project book.
If the instructions are followed carefully it will be but a short time before the student who shows an aptitude for the work is qualified to enter the shop as a learner or helper to a machinist, toolmaker or die maker.

CONTENTS

Project

Description

Page

1. Nall Set . 2

2. Center Punch and Drill Punch. 4

3. Plumb Bob . 6

4. Lathe Mandrel . 8

6. 60° Lathe Centers. No. 3 Morse Taper. 10

8. Drill Pad . 12

9. Crotch Center . 14

11. Cup Center . 16

12. Spur Center . 18

13. 1" Bolt and Nut . 20

14. Pipe Center and Shank . 22

15. Screw Driver . 24

18. "C" Clamp . 26

20. Machinist's Clamp . 28

21. Bell Center Punch . 30

22. Center Punch With Sliding Sleeve Hammer .... 32

23. Clamp Lathe Dog . 34

Project

Description

Page

24. Machinist's Hammer Kit. 36

29. Boring Bar For Lathe. 40

30. Milling Arbor For Lathe . 42

31. Morse Taper Standard Test Plug.44

32. Morse Taper Standard Test Socket. 44

36. Surface Gauge . 46

39. SmaU Bench Vise . 50

41. Mercury Plumb Bob. 54

42. Machinist's Jack Screw . 56

44. lack Screw . 58

46. Cabinetmaker's Vise. 60

47. Adjustable Tap Wrench. 64

48. "T" Handle Tap Wrench. 66

55. 6" Improved Water Motor. 68

58. Arbor Press . 74

62. Hand Power Emery Grinder. 80

70. Vi H.P. Gasoline Engine. 91

Reprinted by Lindsay Publications Inc, Bradley IL 60915 2001 - All rights reserved. ISBN 1-55918-248-2 1234567890

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PROJECT NO. 1
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PROJECT No. 1

NAIL SET

MATERIAL REQUIRED:
Tool steel 3/a" octagon z 4We" long. One required.

OPERATIONS:

1. Select stock as per drawing. 2. Place steel in 4-jaw independent chuck, with end projecting 2
inches. Adjust jaws so stock runs true.* 3. Arrange belt for proper spindle speed.* 4. Set lathe tool for facing.* 5. Face end.* 6. Concave end. Use round nose tool ground to Wo" radius,
setting tool on center. 7. Set compound rest at proper angle to obtain taper of 2 inches
per foot. This is approximately 95 degrees to the right. 8. Set round nose tool on center for taper turning.* 9. Rough turn taper to approximate size*, feeding toward the
headstock with compound rest screw.* 10. Finish turn taper using fine feed.* 11. Set tool on center for chamfering. 12. Chamfer point as per drawing. 13. File tapered section lightly to remove tool marks.* 14. Polish tapered section with emery cloth and oil.* 15. Turn stock end for end in chuck, allowing end to project 1 inch,
and true as before. 16. Face end. 17. Chamfer comers. 18. Transfer to forge. Harden and temper taper end*, for distance
of 1 inch from end, as per drawing. 19. Return to lathe and re-polish.
'See book "How to Run a Lathe."

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PROTECT NO. 2
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PROJECT No. 2

A SET OF PUNCHES

MATERIAL REQUIRED:
Tool steel 3/»" octagon x 4\W long. Two required.

OPERATIONS:

PART No. 1—CENTER PUNCH
1. Select stock as per drawing. 2. Place stock in 4-jaw independent chuck, projecting 2 inches.
Adjust jaws so stock runs true.* 3. Arrange belt for proper spindle speed.* 4. Set compound rest at proper angle to obtain taper of 2Vi inches
per foot. This is approximately 96 degrees to the right. 5. Set tool for taper turning.* 6. Rough turn taper, using round nose tool and feeding toward
headstock with compound rest screw.* 7. Finish turn taper using fine feed for smooth finish.* 8. Set compound rest 120 degrees to the right. Turn angle of point
using same tool. 9. File machined section lightly to remove tool marks.* 10. Polish with fine emery cloth and oil.* 11. Turn stock end for end in chuck, projecting 1 inch, and true
as before. 12. Set lathe tool for facing.* 13. Face end to length as per drawing.* 14. Set tool for chamfering. 15. Chamfer comer. 16. Transfer to forge, harden and temper* for Yt inch from point,
as per drawing. 17. Replace in lathe chuck and re-polish.

PART No. 2—DRIFT PUNCH
1. Select stock as per drawing. 2. Place stock in 4-jaw independent chuck, projecting 2 inches.
Adjust jaws so stock runs true.* 3. Arrange belt for proper spindle speed.* 4. Set lathe tool for facing.* 5. Face end.* 6. Set lathe tool for turning.* 7. Rough turn punch end.* 8. Finish turn punch end using round nose tool ground to form
fillet at shoulder. 9. File machined section lightly to remove tool marks.* 10. Polish with fine emery cloth and oil.* 11. Turn stock end for end in chuck, projecting 1 inch, and true
as before. 12. Set lathe tool for facing. 13. Face end to length as per drawing. 14. Set tool for chamfering. 15. Chamfer comers. 16. Transfer to forge. Harden and temper* for l3/«" back from
punch end. 17. Return to lathe chuck and re-polish.
’See book "How lo Run a Lathe."

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PROJECT NO. 3
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PLUMB BOB

PROJECT No. 3

MATERIAL REQUIRED: Cold drawn steel %" hex. x 4lA" long. One required.

OPERATIONS:

1. Select stock as per drawing.
2. Lay out and center punch the Vin" hole near the end of stock as per drawing. In locating this hole allow for W to be faced off at end of stock.
3. Transfer work to drill press. Drill hole through center of diam¬ eter as per drawing. (See footnote A.)
4. Transfer work to lathe. Place stock in a 3-jaw universal chuck with drilled end extending 1V4". Adjust so stock runs true.*
5. Arrange belt for proper spindle speed.*
6. Set lathe tool for facing.*
7. Face end.*
8. Center end of stock with sharp pointed tool held in tool post.
9. Center drill end as per drawing, with center drill held in drill chuck in tailstock spindle. Use center drill with %2" pilot drill. (See footnote B.)
10. Drill %■/' hole in end of stock to intersect Vm" hole through diameter as per drawing.
11. Remove drill chuck from tailstock spindle and insert hardened center in its place.*
12. Adjust tailstock so it will support end of work.*
13. Set lathe tool for turning, using a round nose tool ground to form fillet at end of cut as per drawing.*
14. Rough turn large diameter section.*
15. Rough turn small diameter section.
16. Finish turn large diameter section.* 17. Finish turn small diameter section. 18. Round comer at end with file. 19. Polish machined surface with emery cloth.* 20. Turn stock end for end in chuck with IW extending. True as
before.. 21. Set compound rest at an angle of 108° (reading from headstock
side) with handle toward tailstock. 22. Set lathe tool for taper turning.* 23. Rough turn point. 24. Finish turn point. 25. File tapered section* lightly to remove tool marks. Polish with
fine emery cloth.*
NOTE A: Drilling can be done in the lathe using drill pad in tailstock spindle, and drill held in drill chuck in headstock spindle.* NOTE B: Be sure that the center drill starts true so the center hole will be true to the axis of headstock spindle.
'See book "How to Run a Lathe."

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# ■ Sou How To Run A L at ho I

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PROJECT No. 4

PROJECT No. 4

LATHE MANDREL

MATERIAL REQUIRED: Machine steel ll/a" dia. x 7Vis" long. One required.

OPERATIONS:
1. Select stock as per drawing.
2. Lay off and center drill ends.*
3. Place stock on centers in lathe.* Drive with common lathe dog.* (See footnote A.)
4. Arrange belt for proper spindle speed.*
5. Set lathe tool for facing.*
6. Face end.*
7. Turn stock end for end on centers.
8. Face end to length as per drawing.
9. Set sharp pointed tool to undercut end around center hole.
10. Undercut end around center hole as per draw¬ ing to prevent marring center hole.
11. Turn stock end for end on centers.
12. Undercut end around hole on second end.
13. Check depth of center holes to drawing and re-center if necessary.
14. Place stock back on centers in lathe, using regular hardened tailstock center* in place of relieved center, and driving as before.
15. Set lathe tool for turning.*
16. Rough turn small diameter section on one end as per drawing.* Use round nose tool.*
17. Turn stock end for end on centers.
18. Rough turn small diameter section on second end.
19. Rough turn center section as per drawing, plus V62 inch on diameter for finishing.
20. Finish turn* small diameter section one end using round nose tool to form fillet* at shoulder.

21. Turn stock end for end on centers.
22. Finish turn small diameter section on second end.
23. Round end with forming tool as per drawing.
24. Turn stock end for end on centers. Place lathe dog so set screw is on line with set screw mark on other end of arbor.
25. Round second end.
26. Transfer to bench and file flat surfaces on small diameter sections as per drawing. File surfaces on proper location to remove set screw marks made by the dog.
27. Stamp size of arbor on small diameter section at one end of mandrel. (See footnote B.)
28. Transfer to forge and caseharden and tem¬ per* as per drawing. (See footnote C.)
29. Place mandrel on centers in lathe.
30. Set tailstock over to obtain taper of .006" per foot, which is approximately .0023" in length of center section of the mandrel.*
31. Take light trial cut over center section of mandrel.
32. Take measurements at both ends of center section with a micrometer caliper to test accuracy of taper.
33. If taper is not correct adjust setting to correct error. Take second trial cut and test as be¬ fore. Repeat until taper is correct.
34. Finish turn (or grind) center section as per drawing. If finish turned, allow .003" for filing.
35. File lightly to remove tool marks and obtain correct size.*
36. Polish with fine emery cloth and oil.*

NOTE A: A relieved center would simplify the facing operation.*
NOTE B: When finish grinding or turning mandrel see that size stamp is at large end of

same.
NOTE C: If center section of mandrel is to be finished by grinding, harden all over. If to be turned, harden ends only for 1" back.*

'See book "How to Run a Lathe.'

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