Wt4603 unit8 week11

WT4603 Wood Processing Safety & PracticeAutumn 2011Lecture Unit 8 (Week 11)

The Lathe & Exam Revision Lecturer: Mr. Joseph Lyster joseph.lyster@ul.ie Notes prepared by: Mr. Joseph Lyster Notes available on www.slideshare.net/WT4603

Department of Manufacturing & Operations Engineering

WT4603

Wood Turning Lathe• Purpose• Types of lathe

Stand alone Bench mounted Tools

• Anatomy• Operational Procedures• Mechanics• Health & Safety• Type of work• Tools• Example of primary work

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Wood Turning Lathe

www.irishwoodturnersguild.com

• The art or process of shaping wood into forms on a lathe.

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Stand Alone Lathe

Bench Mounted Lathe

Primary Wood Turning Tools

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Wood Lathe Anatomy• Start/Stop Control• Headstock• Tailstock• Bed• Tool Rest• Tailstock Hand Wheel• Tailstock Spindle• Spindle Lock• Faceplate• Variable Speed Control• Locking Lever

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• Wear safety goggles or face shield to protect yourself from flying chips.• Wear hearing protection that is suitable for the level and frequency of the noise you are exposed to in the

woodworking area.• Wear a dusk mask when dust is generated (e.g., during sanding operations).• Work in well-lighted area.• Before the lathe is turned on, ensure that all clamps and fittings are secure and that the work piece is free to turn. • Use stock free of defects. • Hold tools firmly with both hands and against the tool rest. • Hold the stock securely on the faceplate or between the centres. • Use only furnished or approved tools. • Use sharp, well-maintained chisels and gouges. • Select a speed that is appropriate for the job. Operate the lathe at a low speed and use a moderate cut depth to

prevent splinters from flying out during roughing operations. The actual speed of the lathe depends on type of wood, a diameter of stock, nature of work being done and type of tool used.

• Adjust tool rests so that they are parallel and as close as possible to the stock. They should also be set high enough so that tools will cut into the wood slightly above the centre of the work being turned.

• Remove the tool rest when sanding or polishing. • Use appropriate tools to hold the sand paper or emery paper whenever possible. Examples include a 'nut cracker'

or the paper fixed to a piece of flat wood. If you must use your hands always hold the paper in a way that will allow the paper to catch, pull or entangle around the stock.

• To make a faceplate turning, the one hand steadies the tip of the chisel, which holds the edge against the tool rest while the other hand guides the tool. Keep the tip of the chisel held higher than the handle.

Operational Procedures

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• Ø x RPM = Lathe Speed

• Normally this is outlined on the machine information panel along with belt adjustment settings

Lathe Speed

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Hazards Risk Control Measures

1 Entanglement Lab coats, securing of long hair and loose garments/Jewellery

2 Violent Ejection Secure work piece properly, lock tailstock to bed

3 Piece Spinning RPM/Material size

4 Electric Shock Ensure electrical casing intact for all components

5 Cuts Swarf ejection, hand jewellery

6 Inadvertent Starting Flush start, stop cap control system, isolator

7 Pinch Point Mechanical belt adjustment

8 Moving Tool Rest Lock/clamp handle

Wood Turning Lathe

Risk Assessment

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1. ENTANGLEMENTSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

Highly Unlikely Trivial Tolerable Tolerable Moderate Moderate

Quiet Unlikely Tolerable Tolerable Moderate Moderate Substantial

Likely Tolerable Moderate Moderate Substantial Substantial

Quite Likely Moderate Moderate Substantial Substantial Intolerable

Highly Likely Moderate Substantial Substantial Intolerable Intolerable

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2. VIOLENT EJECTIONSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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3. PIECE SPINNINGSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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4. ELECTRIC SHOCKSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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5. CUTSSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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6. INADVERTENT STARTING

SEVERITYSlightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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7. PINCH POINTSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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8. MOVING TOOL RESTSEVERITY

Slightly Harmful

Moderately Harmful

Quite Harmful

Very Harmful

Extremely Harmful

LIKELIHOO

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RISK ASSESSMENT

Location: SR2-047 Date: 24-09-2010 Assessment Carried out by: Mr. Joe Lyster

Assessment of: WOOD TURNING LATHE CE Marking (Machines): Yes No □□̷�

of 1 Assessment Review Date: 12-11-2010

HAZARD RISK MAGNITUDE PERSONS AT RISK EXISTING CONTROLS REQUIRED CONTROLS PERSONS RESPONSIBLE TARGET DATE

1. Entanglement Intolerable User of Machine Securing Clothes/HairLab coats, securing of

long hair and loose garments/Jewellery

Teacher/Students 12-11-2010

2. Violent Ejection Substantial All in Class Headstock/Tail stock – material preparation

Secure work piece properly, lock

tailstock to bedTeacher/Students 12-11-2010

3. Piece Spinning Substantial All in Vicinity Clamping/Speed Set up RPM/Material size Teacher/Students 12-11-2010

4. Electric Shock Hazards Moderate User of Machine Inspection of

EquipmentElectrical casing intact

for all componentsTeacher/Students 12-11-2010

5. Cuts Substantial User of Machine Training/PPESwarf ejection, hand

jewellery, tool handing, User PPE i.e.

face shieldTeacher/Students 12-11-2010

6. Inadvertent Starting Moderate All in Vicinity Lockable Isolator

SwitchFlush start, stop cap

control system, isolator

Teacher/Students 12-11-2010

7. Pinch Point Substantial User of Machine TrainingMechanical belt

adjustment, chuck removal, tool

handlingTeacher/Students 12-11-2010

8. Moving Tool Rest Substantial User of Machine Bed lock handle Bed lock handle Teacher/Students 12-11-2010

WT4603

http://www.youtube.com/watch?v=k6SRVTBZIxU

http://www.woodturningonline.com/Turning/Turning_projects.html

http://www.woodturnersresource.com/

http://www.dailymotion.com/video/xbs54h_woodturning-projects-spinning-tops_school

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