Major Work Activity E – Machines using conventional lathes

Task E-12 Sets up conventional lathes

Task Descriptor

Machinists set up conventional lathes including engine lathes, turret lathes and vertical lathes for operations such as turning, boring and threading. Comprehensive lathe skills are essential for fully qualified machinists.

E-12.01 Selects conventional lathe types

Essential Skills

Thinking, Document Use, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-12.01.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-12.01.02P

determine lathe

lathe is determined according to workpiece characteristics and operations to be performed

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

workpiece characteristics include: material, size, shape

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.01.01L

demonstrate knowledge of conventional lathes, their accessories, attachments and applications

define terminology associated with conventional lathes

 

 

identify types of conventional lathes and describe their operating principles and applications

Range of Variables

types of conventional lathes include: engine, turret, vertical turret, vertical boring mill, multispindle

E-12.02 Plans operation of conventional lathes

Essential Skills

Thinking, Document Use, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-12.02.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-12.02.02P

determine sequence of operations

sequence of operations is determined according to specifications and company policies

E-12.02.03P

select work holding device

work holding device is selected according to workpiece characteristics and operations

E-12.02.04P

select conventional lathe tools and accessories

conventional lathe tools and accessories are selected according to workpiece characteristics and operations

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

work holding devices include: three‑jaw chuck, four‑jaw chuck, faceplate, collet chuck, between centers, magnetic chuck

workpiece characteristics include: material, size, shape

conventional lathe tools and accessories include: steady rest, taper attachment, lathe dog, turning tool, centres, follower rest

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.02.01L

demonstrate knowledge of conventional lathes, their maintenance and procedures for use

identify the components and controls of conventional lathes and describe their purpose and operation

 

 

identify types of work holding devices and describe their applications

 

 

identify types of tool holding devices and describe their applications

E-12.02.02L

demonstrate knowledge of conventional lathe tools and accessories, and their applications

identify conventional lathe tools and accessories and describe their applications

 

 

identify the considerations and requirements for selecting conventional lathe tools and accessories for specific operations

Range of Variables

work holding devices include: three‑jaw chuck, four‑jaw chuck, faceplate, collet chuck, between centers, magnetic chuck

conventional lathe tools and accessories include: steady rest, taper attachment, lathe dog, turning tool, centres, follower rest

E-12.03 Sets up work holding devices for conventional lathes

Essential Skills

Oral Communication, Document Use, Thinking

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Skills

Performance Criteria

Evidence of Attainment

E-12.03.01P

clean and check spindle and work holding device

spindle and work holding device is cleaned and checked for damage and debris

E-12.03.02P

protect bedways

bedways are protected according to company policies

E-12.03.03P

mount work holding device

work holding device is mounted manually or using hoisting and rigging equipment

E-12.03.04P

secure work holding device

work holding device is secured using tools required to set up work holding devices

E-12.03.05P

install and use spindle stops

spindle stops are installed and used when required

Range of Variables

work holding devices include: three‑jaw chuck, four‑jaw chuck, face plate, collet chuck

hoisting and rigging equipment includes: chain block, crane, lifting eye, sling

tools include: wrenches, keys, hook spanners, chuck wrenches

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.03.01L

demonstrate knowledge of work holding devices, their maintenance and procedures for use

identify types of work holding devices and describe their applications

 

 

describe the procedures used to set up work holding devices on lathes

 

 

identify tools required to set up work holding devices on lathes

 

 

identify potential setup problems and describe their causes and solutions

Range of Variables

work holding devices include: three‑jaw chuck, four‑jaw chuck, face plate, collet chuck

tools include: wrenches, keys, hook spanners, chuck wrenches

E-12.04 Sets up tooling for conventional lathes

Essential Skills

Oral Communication, Reading, Thinking

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yes

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Skills

Performance Criteria

Evidence of Attainment

E-12.04.01P

check for clearance

clearance is checked to ensure safe operation

E-12.04.02P

adjust cutting tool angle

cutting tool angle is adjusted according to workpiece characteristics and operations to be performed

E-12.04.03P

adjust cutting tool to machine centre height

cutting tool is adjusted to machine centre height

Range of Variables

cutting tools include: turning tool, boring bar, threading tool, knurling tool, part-off blade

workpiece characteristics include: material, size, shape

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.04.01L

demonstrate knowledge of cutting tools, their maintenance and procedures for use

identify types of cutting tools and describe their applications

 

 

describe the procedures used to set up cutting tools on lathes

 

 

identify potential setup problems and describe their causes and solutions

Range of Variables

cutting tools include: turning tool, boring bar, threading tool, knurling tool, part-off blade

E-12.05 Sets up conventional lathe accessories

Essential Skills

Thinking, Numeracy, Working with Others

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Skills

Performance Criteria

Evidence of Attainment

E-12.05.01P

inspect and clean conventional lathe accessories

conventional lathe accessories are inspected for damage and cleaned to ensure accuracy

E-12.05.02P

adjust, position and secure conventional lathe accessories

conventional lathe accessories are adjusted, positioned and secured

E-12.05.03P

identify problems

problems are identified

E-12.05.04P

implement solutions

problems are eliminated

Range of Variables

conventional lathe accessories include: taper attachments, steady rests, follower rests, centres

problems include: misalignment, run‑out, insufficient clearance, improper adjustments

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.05.01L

demonstrate knowledge of conventional lathe accessories, their maintenance and procedures for use

identify conventional lathe accessories and describe their applications

 

 

describe the procedures used to set up conventional lathe accessories

 

 

describe the procedures used to inspect and clean conventional lathe accessories

 

 

identify potential setup problems and describe their causes and solutions

Range of Variables

conventional lathe accessories include: taper attachments, steady rests, follower rests, centres

problems include: misalignment, run‑out, insufficient clearance, improper adjustments

E-12.06 Sets up workpiece on conventional lathe

Essential Skills

Thinking, Document Use, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-12.06.01P

place workpiece in position

workpiece is placed in position

E-12.06.02P

secure workpiece with work holding device

workpiece is secured with work holding device

E-12.06.03P

check and adjust workpiece

workpiece is checked for run-out and distortion using inspection equipment, and is adjusted accordingly

E-12.06.04P

counterbalance setup

setup is balanced if required

Range of Variables

work holding devices include: three‑jaw chuck, four‑jaw chuck, face plate, collet chuck, centres

inspection equipment includes: dial indicators, micrometers, surface gauges

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.06.01L

demonstrate knowledge of workpiece setup

identify types of work holding devices and describe their applications

 

 

describe the procedures used to set up work holding devices on lathes

 

 

identify types of inspection equipment and describe their use

 

 

describe the procedures used to set up eccentrics on conventional lathes

 

 

describe the procedures used to ensure parts run true

Range of Variables

work holding devices include: three‑jaw chuck, four‑jaw chuck, face plate, collet chuck, centres

inspection equipment includes: dial indicators, micrometers, surface gauges

E-12.07 Selects conventional lathe speeds and feeds

Essential Skills

Numeracy, Thinking, Document Use

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yes

yes

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Skills

Performance Criteria

Evidence of Attainment

E-12.07.01P

identify type of material to be turned

type of material to be turned is identified according to specifications

E-12.07.02P

determine surface speed

surface speed is determined according to reference material

E-12.07.03P

calculate spindle speed

spindle speed is calculated according to cutting speed of material and workpiece diameters

E-12.07.04P

determine feed rate

feed rate is determined according to depth of cut and surface finish

E-12.07.05P

adjust machine controls

machine controls are adjusted according to calculated settings

E-12.07.06P

readjust machine controls

machine controls are readjusted according to cutting performance

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

reference materials include: cutting tool manufacturers’ specifications, charts, Machinery’s Handbook

 

Knowledge

Learning Outcomes

Learning Objectives

E-12.07.01L

demonstrate knowledge of lathe speeds and feeds

describe the considerations to determine speed, feed and depth of cut

E-12.07.02L

demonstrate knowledge of calculations required to adjust machine controls

identify calculations for speed, feed and depth of cut

Task E-13 Operates conventional lathes

Task Descriptor

Machinists operate conventional lathes including engine lathes, turret lathes and vertical lathes for operations such as turning, boring and threading. Comprehensive lathe skills are essential for fully qualified machinists.

E-13.01 Faces surfaces using a conventional lathe

Essential Skills

Document Use, Thinking, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-13.01.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.01.02P

touch off tool on workpiece

tool is touched off on workpiece

E-13.01.03P

cut and measure workpiece

workpiece is cut and measured to establish starting length

E-13.01.04P

rough face workpiece

workpiece is rough faced to remove excess material

E-13.01.05P

measure workpiece throughout the process

workpiece is measured throughout the process to make adjustments

E-13.01.06P

identify problems

problems are identified

E-13.01.07P

implement solutions

problems are eliminated

E-13.01.08P

finish face workpiece

workpiece is finish faced according to specifications

E-13.01.09P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: chatter, tool wear, incorrect tool height setting, chip management

inspection equipment includes: precision square, straight edge, caliper, dial indicator, digital read out

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.01.01L

demonstrate knowledge of facing operations

describe the considerations to determine speed, feed and depth of cut for conventional lathe operations

 

 

identify cutting fluids and coolants used during conventional lathe operations

 

 

describe the procedures used to set speeds and feeds

 

 

identify hazards and describe safe work practices pertaining to conventional lathes

 

 

identify types of facing tools and describe their applications and procedures for use

 

 

describe the procedures used for facing work on a conventional lathe

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: chatter, tool wear, incorrect tool height setting, chip management

E-13.02 Turns external surfaces using a conventional lathe

Essential Skills

Document Use, Thinking, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-13.02.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.02.02P

touch off tool on workpiece

tool is touched off on workpiece

E-13.02.03P

perform starting turn and measure workpiece

starting turn is performed and workpiece is measured

E-13.02.04P

rough turn workpiece

workpiece is rough turned to remove excess material

E-13.02.05P

measure workpiece throughout the process

workpiece is measured throughout the process to make adjustments

E-13.02.06P

identify problems

problems are identified

E-13.02.07P

implement solutions

problems are eliminated

E-13.02.08P

finish turn workpiece

workpiece is finish turned according to specifications

E-13.02.09P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: chatter, tool deflection, taper, run‑out

inspection equipment includes: micrometers, depth micrometers, dial indicators, calipers, gauges, digital read out

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.02.01L

demonstrate knowledge of turning operations

describe the considerations to determine speed, feed and depth of cut for conventional lathe operations

 

 

identify cutting fluids and coolants used during conventional lathe operations

 

 

describe the procedures used to set speeds and feeds

 

 

identify hazards and describe safe work practices pertaining to conventional lathes

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: chatter, tool deflection, taper, run‑out

E-13.03 Drills using a conventional lathe

Essential Skills

Thinking, Document Use, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-13.03.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.03.02P

install centre drill

centre drill is installed

E-13.03.03P

centre drill the workpiece

workpiece is centre drilled

E-13.03.04P

install drill for application

drill for application is installed according to specifications

E-13.03.05P

drill workpiece

workpiece is drilled

E-13.03.06P

measure and check hole

hole is measured and checked according to specifications

E-13.03.07P

identify problems

problems are identified

E-13.03.08P

implement solutions

problems are eliminated

E-13.03.09P

verify feature meets specifications

feature is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: drill wandering, oversized holes, misalignment of tail stock/turret, damage to cutting tool, chip management, incorrect drill geometry

inspection equipment includes: pin gauges, go/no-go gauges, calipers, telescopic gauges, small hole gauges, digital read out

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.03.01L

demonstrate knowledge of drilling operations using a conventional lathe

describe the procedures used for centre drilling and drilling on a conventional lathe

 

 

describe the procedures used for installing drills

 

 

identify hazards and describe safe work practices pertaining to conventional lathes

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: drill wandering, oversized holes, misalignment of tail stock/turret, damage to cutting tool, chip management, incorrect drill geometry

E-13.04 Bores holes using a conventional lathe

Essential Skills

Document Use, Thinking, Numeracy

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yes

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Skills

Performance Criteria

Evidence of Attainment

E-13.04.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.04.02P

touch off tool on workpiece

tool is touched off on workpiece

E-13.04.03P

cut and measure workpiece

workpiece is cut and measured to establish starting diameter

E-13.04.04P

rough bore workpiece

workpiece is rough bored to remove excess material

E-13.04.05P

measure workpiece throughout the process

workpiece is measured throughout the process to make adjustments

E-13.04.06P

identify problems

problems are identified

E-13.04.07P

implement solutions

problems are eliminated

E-13.04.08P

finish bore workpiece

workpiece is finish bored according to specifications

E-13.04.09P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: insufficient chip and tool clearance, chatter, tool deflection, taper, run‑out

inspection equipment includes: inside micrometers, depth micrometers, dial indicators, bore gauges, calipers, telescoping gauges, digital read out

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.04.01L

demonstrate knowledge of boring operations

describe the considerations to determine speed, feed and depth of cut for conventional lathe operations

 

 

identify cutting fluids and coolants used

 

 

describe the procedures used to set speeds and feeds

 

 

identify hazards and describe safe work practices pertaining to conventional lathes

 

 

identify types of boring tools and describe their applications and procedures for use

 

 

describe the procedures used for boring work on a conventional lathe

 

 

describe the procedures used for counterboring and chamfering work on a conventional lathe

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: insufficient chip and tool clearance, chatter, tool deflection, taper, run‑out

E-13.05 Reams holes using a conventional lathe

Essential Skills

Thinking, Document Use, Numeracy

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Skills

Performance Criteria

Evidence of Attainment

E-13.05.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.05.02P

install reamer in tail stock/turret

reamer is installed in tail stock/turret

E-13.05.03P

feed reamer into workpiece

reamer is fed into workpiece to create a finished hole

E-13.05.04P

identify problems

problems are identified

E-13.05.05P

implement solutions

problems are eliminated

E-13.05.06P

verify feature meets specifications

feature is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: chatter, oversized holes, misalignment of tail stock/turret, damage to cutting tool, bell-mouth

inspection equipment includes: go/no-go gauges, bore gauges, telescopic gauges

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.05.01L

demonstrate knowledge of reaming operations

describe the procedures used for reaming work on a conventional lathe

 

 

describe the procedures used for installing reamers

 

 

describe speed and feed for conventional lathe operations

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: chatter, oversized holes, misalignment of tail stock/turret, damage to cutting tool, bell-mouth

E-13.06 Turns tapers using a conventional lathe

Essential Skills

Document Use, Thinking, Numeracy

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yes

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Skills

Performance Criteria

Evidence of Attainment

E-13.06.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.06.02P

set compound rest, taper attachment or tailstock offset

compound rest, taper attachment or tailstock offset are set to achieve required angle

E-13.06.03P

check angle for accuracy

angle is checked for accuracy using inspection equipment

E-13.06.04P

touch off tool on workpiece

tool on workpiece is touched off to establish primary reference point

E-13.06.05P

rough turn or bore workpiece

workpiece is rough turned or bored to remove excess material

E-13.06.06P

measure workpiece throughout the process

workpiece is measured throughout the process to make adjustments using inspection equipment

E-13.06.07P

identify problems

problems are identified

E-13.06.08P

implement solutions

problems are eliminated

E-13.06.09P

finish turn or bore workpiece

workpiece is finish turned or bored according to specifications

E-13.06.10P

verify workpiece meets specifications

workpiece is verified that it meets specifications by using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

inspection equipment includes: taper gauges, dial indicators, micrometers, protractors, parallels and pins, sine bars, digital read out

problems include: insufficient chip and tool clearance, chatter, tool deflection, incorrect taper, run‑out

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.06.01L

demonstrate knowledge of tapers, their applications and machining operations

identify types of tapers and describe their applications

 

 

identify types of taper attachments and describe their applications and procedures for use

 

 

identify calculations required for tapers

 

 

identify methods used to check tapers and describe their associated procedures

 

 

identify methods used to turn tapers and describe their associated procedures

 

 

define terminology associated with taper turning

 

 

identify hazards and describe safe work practices pertaining to taper turning

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: insufficient chip and tool clearance, chatter, tool deflection, incorrect taper, run‑out

types of tapers include: Morse taper, taper pin, pipe thread taper, machine taper, Jacobs taper

taper attachments include: plain, telescopic

methods used to check tapers include: plug gauge, parallels and pins, ring gauge, sine bar, layout lines, dial indicator, Prussian Blue, digital read out

methods used to turn tapers include: taper attachment, tailstock offset, compound rest, form tool

E-13.07 Knurls using a conventional lathe

Essential Skills

Continuous Learning, Thinking, Oral Communication

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Skills

Performance Criteria

Evidence of Attainment

E-13.07.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.07.02P

select knurling tool

knurling tool is selected according to specifications

E-13.07.03P

engage tool to workpiece

tool is engaged to workpiece by hand feeding cross-slide

E-13.07.04P

feed tool along required length of knurl

tool is fed along required length of knurl

E-13.07.05P

visually inspect workpiece throughout the process

workpiece is visually inspected throughout the process

E-13.07.06P

identify problems

problems are identified

E-13.07.07P

implement solutions

problems are eliminated

E-13.07.08P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: galling, flaking, incorrect form, workpiece deflection, insufficient lubrication, double cutting

inspection equipment includes: sample piece, calipers, microscope

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.07.01L

demonstrate knowledge of knurling operations

describe the considerations to determine speed and feed for knurling operations

 

 

identify cutting fluids and coolants used during conventional lathe operations

 

 

identify hazards and describe safe work practices pertaining to knurling

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: galling, flaking, incorrect form, workpiece deflection, insufficient lubrication, double cutting

E-13.08 Cuts grooves using a conventional lathe

Essential Skills

Numeracy, Document Use, Thinking

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Skills

Performance Criteria

Evidence of Attainment

E-13.08.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.08.02P

confirm the centre height and alignment of tool

centre height and alignment of tool is confirmed

E-13.08.03P

touch off tool on workpiece

tool is touched off on workpiece to establish reference point

E-13.08.04P

establish tool location from reference point

tool location from reference point is established

E-13.08.05P

feed tool into workpiece

tool is fed into workpiece

E-13.08.06P

measure and check groove throughout the process

groove is measured and checked throughout the process to make adjustments according to specifications

E-13.08.07P

identify problems

problems are identified

E-13.08.08P

implement solutions

problems are eliminated

E-13.08.09P

finish grooving operation

grooving operation is finished according to specifications

E-13.08.10P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: chattering, galling, tool wandering, tool wear, chip management

inspection equipment includes: gauge blocks, groove micrometers, calipers, radius gauges

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.08.01L

demonstrate knowledge of grooving operations

describe the considerations to determine speed and feed for conventional lathe operations

 

 

identify cutting fluids and coolants used during conventional lathe operations

 

describe the procedures used to set speeds and feeds

 

identify hazards and describe safe work practices pertaining to conventional lathes

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: chattering, galling, tool wandering, tool wear, chip management

E-13.09 Cuts threads using a conventional lathe

Essential Skills

Thinking, Document Use, Numeracy

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BC

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yes

yes

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yes

yes

yes

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NV

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NV

 

Skills

Performance Criteria

Evidence of Attainment

E-13.09.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.09.02P

set quick-change gear box

quick-change gear box is set to required thread pitch

E-13.09.03P

calculate and set-up required gear train

gear train is calculated and set to required thread pitch

E-13.09.04P

confirm the centre height and alignment of tool

centre height and alignment of tool is confirmed

E-13.09.05P

touch off tool on workpiece

tool is touched off on workpiece to establish starting diameter

E-13.09.06P

machine test pass

test pass is machined to verify thread pitch

E-13.09.07P

measure thread pitch

thread pitch is measured using inspection equipment

E-13.09.08P

machine workpiece

workpiece is machined according to specifications

E-13.09.09P

deburr threaded workpiece

threaded workpiece is deburred to remove sharp edges

E-13.09.10P

identify problems

problems are identified

E-13.09.11P

implement solutions

problems are eliminated

E-13.09.12P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

inspection equipment includes: thread wires, thread micrometers, thread gauges, sample pieces, outside micrometers, calipers, pitch gauges, centre gauge

problems include: chatter, tool deflection, taper, tool misalignment

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.09.01L

demonstrate knowledge of threading operations

identify methods used to cut threads and describe their associated procedures

 

 

describe the considerations to determine speed and feed

 

 

identify cutting fluids and coolants used

 

 

describe the procedures used to set speeds and feeds

 

 

identify methods used to cut multiple start threads and describe their associated procedures

 

 

describe the procedures used to deburr a workpiece

 

 

identify potential problems and describe their causes and solutions

 

 

describe the procedures used to check and measure threads using inspection equipment

 

 

identify types of threads, and describe their purpose, characteristics and applications

Range of Variables

inspection equipment includes: thread wires, thread micrometers, thread gauges, sample pieces, outside micrometers, calipers, pitch gauges, centre gauge

problems include: chatter, tool deflection, taper, tool misalignment

methods used to cut threads include: slotted drive or faceplate, indexing of the spindle gear, use of thread chasing dial, compound rest method

E-13.10 Parts off workpiece using a conventional lathe

Essential Skills

Numeracy, Document Use, Thinking

NL

NS

PE

NB

QC

ON

MB

SK

AB

BC

NT

YT

NU

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

NV

NV

NV

 

Skills

Performance Criteria

Evidence of Attainment

E-13.10.01P

determine operations to be performed

operations to be performed are determined according to specifications

E-13.10.02P

confirm the centre height and alignment of tool

centre height and alignment of tool is confirmed

E-13.10.03P

touch off tool on workpiece

tool is touched off on workpiece to establish reference point

E-13.10.04P

establish tool location from reference point

tool location from reference point is established

E-13.10.05P

feed tool into workpiece and retrieve part

tool is fed into workpiece and part is retrieved

E-13.10.06P

identify problems

problems are identified

E-13.10.07P

implement solutions

problems are eliminated

E-13.10.08P

verify workpiece meets specifications

workpiece is verified that it meets specifications using inspection equipment

Range of Variables

specifications include: design, standards, client, industry, manufacturers’, drawings

problems include: chattering, galling, tool wandering, chip management, tool misalignment, incorrect tool height

inspection equipment includes: micrometers, straight edges, calipers, precision square

 

Knowledge

Learning Outcomes

Learning Objectives

E-13.10.01L

demonstrate knowledge of parting off operations

describe the considerations to determine speed and feed for conventional lathe operations

 

 

identify cutting fluids and coolants used during conventional lathe operations

 

 

describe the procedures used to set speeds and feeds

 

 

identify hazards and describe safe work practices pertaining to conventional lathes

 

 

identify potential problems and describe their causes and solutions

Range of Variables

problems include: chattering, galling, tool wandering, chip management, tool misalignment, incorrect tool height

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