Table of Contents
Task G-16 Sets up precision grinding machines
Task Descriptor
Machinists select, plan and set up precision grinding machines and their accessories to achieve requirements such as tight tolerances and high quality surface finishes.
G-16.01 - Selects precision grinding machine types
Essential Skills: Numeracy, Thinking, Document Use
G-16.01 - Selects precision grinding machine types
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.01.01P |
determine machining requirements |
machining requirements are determined according to workpiece characteristics and operations to be performed |
| G-16.01.02P |
determine grinder required |
grinder required is selected according to workpiece characteristics and operations to be performed |
Range of Variables
- workpiece characteristics include: material, size, shape
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.01.01L |
demonstrate knowledge of grinding machines and accessories, their applications, and procedures for use |
define terminology associated with grinding machines |
| identify types of grinding machines and accessories and describe their applications |
| interpret documentation pertaining to the material to be ground |
| describe grinding operations to be performed |
Range of Variables
- grinding machines and accessories include: surface, cylindrical, centreless, tool and cutter, dressing stone, coolant systems, angle/radius dresser, wheel dressers, conditioning stone
G-16.02 - Plans operation of grinding machines
Essential Skills: Thinking, Document Use, Numeracy
G-16.02 - Plans operation of grinding machines
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| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.02.01P |
identify grinding procedures |
grinding procedures are identified according to workpiece characteristics and operations to be performed |
| G-16.02.02P |
establish order of procedures |
order of procedures is established according to workpiece characteristics and operations to be performed |
| G-16.02.03P |
determine work holding devices |
work holding devices are determined according to workpiece characteristics and operations to be performed |
| G-16.02.04P |
determine type and dimensions of material to be ground |
type and dimensions of material to be ground are determined according to specifications |
| G-16.02.05P |
determine types, size and grades of grinding wheel |
types, size and grades of grinding wheel are determined according to workpiece characteristics and operations to be performed |
| G-16.02.06P |
select honing stones |
honing stones are selected according to specifications |
| G-16.02.07P |
determine workpiece setup procedure for surface grinder |
workpiece setup procedure for surface grinder is determined according to specifications |
| G-16.02.08P |
determine workpiece setup procedure for cylindrical grinder |
workpiece setup procedure for cylindrical grinder is determined according to specifications |
| G-16.02.09P |
determine workpiece setup procedure for tool and cutter grinder |
workpiece setup procedure for tool and cutter grinder is determined according to specifications |
Range of Variables
- grinding procedures include: surface grinding, cylindrical grinding, tool and cutter grinding
- workpiece characteristics include: material, size, shape
- work holding devices include: face plate, fixtures, magnetic chucks, chucks
- specifications include: design, standards, client, industry, manufacturers’, drawings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.02.01L |
demonstrate knowledge of grinding machines, their applications, and procedures for use |
define terminology associated with grinding machines |
| identify types of grinding machines and accessories and describe their applications |
| interpret documentation pertaining to the material to be ground |
| identify types of work holding devices and describe their applications and maintenance |
| identify sequence of grinding operations |
Range of Variables
- work holding devices include: face plate, fixtures, magnetic chucks, chucks
- grinding machines and accessories include: surface, cylindrical, centreless, tool and cutter, dressing stone, coolant systems
G-16.03 - Sets up work holding devices for precision grinding machines
Essential Skills: Thinking, Document Use, Numeracy
G-16.03 - Sets up work holding devices for precision grinding machines
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.03.01P |
position work holding devices |
work holding devices are positioned to accommodate workpiece and operation |
| G-16.03.02P |
align workpiece and work holding devices |
workpiece and work holding devices are aligned according to specifications |
| G-16.03.03P |
secure work holding devices |
work holding devices are secured |
Range of Variables
- work holding devices include: chucks, face plate, fixtures, magnetic chucks, angle plates, precision vises
- specifications include: design, standards, client, industry, manufacturers’, drawings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.03.01L |
demonstrate knowledge of grinding machines, their applications, and procedures for use |
describe the procedures used to set up grinding machines and accessories |
| identify types of work holding devices and describe their applications and maintenance |
| describe the procedures used to align a workpiece and work holding devices |
| identify potential setup problems and describe their causes and solutions |
Range of Variables
- work holding devices include: chucks, face plate, fixtures, magnetic chucks, angle plates, precision vises
- grinding machines and accessories include: surface, cylindrical, centreless, tool and cutter, dressing stone, coolant systems
G-16.04 - Mounts grinding wheel
Essential Skills: Thinking, Document Use, Numeracy
G-16.04 - Mounts grinding wheel
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.04.01P |
inspect and ring test grinding wheel |
grinding wheel is inspected and ring tested for defects |
| G-16.04.02P |
secure wheel on adapters |
wheel is secured on adapters using blotters and flanges |
| G-16.04.03P |
balance grinding wheel |
grinding wheel is balanced using wheel balancing equipment |
| G-16.04.04P |
install balanced wheel assembly on machine |
balanced wheel assembly is installed on machine according to specifications |
| G-16.04.05P |
true and dress mounted grinding wheel |
mounted grinding wheel is trued and dressed using dressing tools |
| G-16.04.06P |
assess further balancing requirements and adjust, if required |
further balancing requirements are assessed and required adjustments are made |
Range of Variables
- defects include: cracks, stains, gouges
- wheel balancing equipment includes: mandrels, weights
- specifications include: design, standards, client, industry, manufacturers' drawings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.04.01L |
demonstrate knowledge of grinding machines, their applications, and procedures for use |
describe the procedures used to set up and mount wheels on grinding machines |
| identify types of wheel dressers and describe their applications |
| describe the procedures used to true and dress grinding wheels |
| describe procedures used to balance grinding wheels |
| describe the procedures used to inspect, maintain and store grinding wheels |
G-16.05 - Sets up grinding accessories
Essential Skills: Thinking, Document Use, Numeracy
G-16.05 - Sets up grinding accessories
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.05.01P |
select accessories |
accessories are selected according to specifications, workpiece characteristics and operations to be performed |
| G-16.05.02P |
inspect accessories |
accessories are inspected for damage and defects |
| G-16.05.03P |
clean and check accessories and mounting surface |
accessories and mounting surface are cleaned and checked to ensure accuracy |
| G-16.05.04P |
position, fasten and adjust accessories |
accessories are positioned, fastened and adjusted to accommodate workpiece, machine and specifications |
Range of Variables
- accessories include: angle plate, collets, steady rest, chucks, drive dogs, mandrels
- specifications include: design, standards, client, industry, manufacturers' drawings
- workpiece characteristics include: material, size, shape
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.05.01L |
demonstrate knowledge of grinding accessories, their applications, and procedures for use |
identify types of accessories used for grinding operations and describe their applications |
| describe the procedures used to set up grinding machines and accessories |
| describe the procedures used to inspect and maintain grinding machine accessories |
Range of Variables
- accessories include: angle plate, collets, steady rest, chucks, drive dogs, mandrels
- grinding machines and accessories include: surface, cylindrical, centreless, tool and cutter, dressing stone, coolant systems
G-16.06 - Sets up workpiece on precision grinding machines
Essential Skills: Thinking, Document Use, Numeracy
G-16.06 - Sets up workpiece on precision grinding machines
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.06.01P |
prepare workpiece and mounting surfaces |
workpiece and mounting surfaces are prepared by eliminating burrs and debris |
| G-16.06.02P |
secure workpiece on surface grinder |
workpiece is secured on surface grinder using surface grinder accessories |
| G-16.06.03P |
secure workpiece on cylindrical grinder |
workpiece is secured on cylindrical grinder using cylindrical grinder accessories |
| G-16.06.04P |
secure workpiece on tool and cutter grinder |
workpiece is secured on tool and cutter grinder using tool and cutter grinder accessories |
| G-16.06.05P |
check alignment of workpiece before grinding |
alignment of workpiece is checked before grinding using inspection equipment to ensure accuracy |
| G-16.06.06P |
shim workpiece, if required |
workpiece is shimmed to eliminate stressing of the material, if required |
Range of Variables
- surface grinder accessories include: magnetic chuck, vise, fixture
- cylindrical grinder accessories include: magnetic chuck, chucks, centres with drive dogs
- tool and cutter grinder accessories include: centres, universal vise, collets
- inspection equipment includes: dial indicator, taper gauge, gauge blocks, precision squares
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.06.01L |
demonstrate knowledge of grinding machines, their applications, and procedures for use |
describe the procedures used to set up workpieces on grinders using accessories |
| describe the procedures used to check alignment of workpieces |
G-16.07 - Selects precision grinding machine speeds and feeds
Essential Skills: Thinking, Document Use, Numeracy
G-16.07 - Selects precision grinding machine speeds and feeds
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-16.07.01P |
identify type of material |
type of material is identified according to specifications |
| G-16.07.02P |
determine and calculate precision grinding machine speeds |
precision grinding machine speeds are determined and calculated according to factors |
| G-16.07.03P |
adjust feed control |
feed control is adjusted to required rate |
| G-16.07.04P |
readjust machine controls |
machine controls are readjusted according to cutting performance |
Range of Variables
- specifications include: design, standards, client, industry, manufacturers' drawings
- factors include: wheel size, part diameter, material
- feed control includes: hydraulic, servo-drive controls
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-16.07.01L |
demonstrate knowledge of precision grinding machines, their applications, and procedures for use |
describe the factors used to determine feed and depth of cut for grinding operations |
| describe the calculations used to determine speed |
Range of Variables
- factors include: wheel size, part diameter, material
Task G-17 Operates precision grinding machines
Task Descriptor
Machinists operate precision grinding machines to achieve tight tolerances and high quality surface finishes.
G-17.01 - Grinds flat surfaces using a surface grinder
Essential Skills: Thinking, Document Use, Numeracy
G-17.01 - Grinds flat surfaces using a surface grinder
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-17.01.01P |
touch off grinding wheel on workpiece surface |
grinding wheel is touched off on workpiece surface to establish a reference point |
| G-17.01.02P |
measure workpiece |
workpiece is measured using inspection equipment to determine amount of excess material |
| G-17.01.03P |
remove excess material |
excess material is removed according to specifications |
| G-17.01.04P |
identify problems |
problems are identified |
| G-17.01.05P |
implement solutions |
problems are eliminated |
| G-17.01.06P |
verify flat surface meets specifications |
flat surface is verified to meet specifications using inspection equipment |
Range of Variables
- inspection equipment includes: micrometers, gauge blocks, dial indicators, profilometers, surface finish comparators, depth micrometers
- specifications include: design, standards, client, industry, manufacturers' drawings
- problems include: incorrect speeds and feeds, incorrect depth of cut, wheel glazing or loading, incorrect consistency of coolant
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-17.01.01L |
demonstrate knowledge of surface grinders, their setup, maintenance and procedures for use |
describe the procedures used to adjust and maintain surface grinding machines |
| describe the procedures used to perform surface grinding operations |
| identify potential problems and describe their causes and solutions |
| G-17.01.02L |
demonstrate knowledge of safety practices and procedures related to surface grinding |
identify hazards and describe safe work practices pertaining to surface grinding |
Range of Variables
- problems include: incorrect speeds and feeds, incorrect depth of cut, wheel glazing or loading, incorrect consistency of coolant
G-17.02 - Grinds profiles
Essential Skills: Thinking, Document Use, Numeracy
G-17.02 - Grinds profiles
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-17.02.01P |
dress grinding wheel |
grinding wheel is dressed to desired profile using tools |
| G-17.02.02P |
touch off grinding wheel on workpiece surface |
grinding wheel is touched off on workpiece surface to establish a reference point |
| G-17.02.03P |
measure workpiece |
workpiece is measured to determine amount of excess material using inspection equipment |
| G-17.02.04P |
rough out workpiece profile |
workpiece profile is roughed out to remove excess material leaving a finish grinding allowance |
| G-17.02.05P |
re-dress wheel |
wheel is re-dressed to desired profile using tools |
| G-17.02.06P |
finish grind |
grind is finished according to specifications |
| G-17.02.07P |
verify profile meets specifications |
profile is verified according to specifications using inspection equipment |
Range of Variables
- tools include: radius dressing attachment, dressing stick (stone), diamond dressing tool
- inspection equipment includes: depth micrometers, contour and profile gauge, dial indicators, surface finish comparators
- specifications include: design, standards, client, industry, manufacturers' drawings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-17.02.01L |
demonstrate knowledge of grinders, their setup, maintenance and procedures for use |
describe the procedures used to calculate the amount of excess material |
| describe the procedures used to grind profiles |
| identify techniques used to troubleshoot profile grinding operations and describe their associated procedures |
| G-17.02.02L |
demonstrate knowledge of grinding wheels, their applications, maintenance and procedures for use |
identify types of grinding wheels and describe their characteristics and applications |
| identify types of wheel dressers and describe their applications |
| describe the procedures used to true and dress grinding wheels |
| identify the considerations and requirements for selecting a grinding wheel for profile grinding |
Range of Variables
- considerations and requirements for selecting a grinding wheel include: operations, abrasive, grain, grade, structure, bond
G-17.03 - Grinds internal and external cylindrical and tapered surfaces
Essential Skills: Thinking, Document Use, Numeracy
G-17.03 - Grinds internal and external cylindrical and tapered surfaces
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-17.03.01P |
dress grinding wheel |
grinding wheel is dressed using tools |
| G-17.03.02P |
adjust table |
table is adjusted according to required orientation |
| G-17.03.03P |
touch off grinding wheel on workpiece surface |
grinding wheel is touched off on workpiece surface to establish a reference point |
| G-17.03.04P |
measure workpiece |
workpiece is measured to determine amount of excess material using inspection equipment |
| G-17.03.05P |
rough out workpiece |
workpiece is roughed out to remove excess material leaving a finish grinding allowance |
| G-17.03.06P |
re-dress wheel |
wheel is re-dressed using tools |
| G-17.03.07P |
finish grind |
grind is finished according to specifications |
| G-17.03.08P |
re-measure workpiece |
workpiece is re-measured to confirm specifications are met using inspection equipment |
Range of Variables
- tools include: dressing stick (stone), diamond dressing tool
- orientation includes: taper, parallelism
- inspection equipment includes: micrometers, sine bars, dial indicators, bore gauges, surface finish comparators, taper gauges, Prussian blue
- specifications include: design, standards, client, industry, manufacturers' drawings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-17.03.01L |
demonstrate knowledge of cylindrical grinders, their setup, maintenance and procedures for use |
describe the procedures used to align workpieces |
| describe the procedures used to perform calculations to determine amount of excess material |
| describe the procedures used to perform cylindrical grinding operations |
| describe the procedures used to calculate feed and depth of cut |
| identify techniques used to troubleshoot cylindrical grinding operations and describe their associated procedures |
| describe the procedures used to inspect and maintain cylindrical grinding machines |
| G-17.03.02L |
demonstrate knowledge of safety practices and procedures related to cylindrical grinding |
identify hazards and describe safe work practices pertaining to cylindrical grinding |
| G-17.03.03L |
demonstrate knowledge of cylindrical grinding wheels, their applications, maintenance and procedures for use |
identify types of cylindrical grinding wheels and describe their characteristics and applications |
| identify types of wheel dressers and describe their applications |
| describe the procedures used to true and dress grinding wheels |
| identify the considerations and requirements for selecting a grinding wheel for cylindrical grinding |
| describe the procedures used to mount and balance cylindrical grinding wheels |
| describe the procedures used to inspect, maintain and store cylindrical grinding wheels |
Range of Variables
- considerations and requirements for selecting a grinding wheel include: operations, abrasive, grain, grade, structure, bond
G-17.04 - Grinds tools and cutters
Essential Skills: Thinking, Document Use, Numeracy
G-17.04 - Grinds tools and cutters
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-17.04.01P |
dress grinding wheel |
grinding wheel is dressed using tools |
| G-17.04.02P |
mount cutting tools |
cutting tools are mounted according to operations |
| G-17.04.03P |
set cutting tool rest |
cutting tool rest is set to establish required relief angle and clearance according to specifications |
| G-17.04.04P |
touch off grinding wheel on workpiece surface |
grinding wheel is touched off on workpiece surface to establish a reference point |
| G-17.04.05P |
grind cutting edge of tools |
cutting edge of tools are ground to establish required tool geometry |
Range of Variables
- tools include: dressing stick (stone), diamond dressing tool
- cutting tools include: end mills, reamers, form relief cutters
- specifications include: design, standards, client, industry, manufacturers' drawings
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-17.04.01L |
demonstrate knowledge of tool and cutter grinders, their setup, maintenance and procedures for use |
describe the procedures used to set up tool and cutter grinders and accessories |
| identify types of cutting tools and describe their applications |
| describe the procedures used to align cutting tools |
| G-17.04.02L |
demonstrate knowledge of tool and cutter grinding wheels, their applications, maintenance and procedures for use |
identify types of tool and cutter grinding wheels and describe their characteristics and applications |
| identify types of wheel dressers and describe their applications |
| describe the procedures used to true and dress grinding wheels |
| identify the considerations and requirements for selecting a grinding wheel for tool and cutter grinding |
| describe the procedures used to mount and balance tool and cutter grinding wheels |
| describe the procedures used to inspect, maintain and store tool and cutter grinding wheels |
Range of Variables
- cutting tools include: end mills, reamers, form relief cutters
- considerations and requirements for selecting a grinding wheel include: operations, abrasive, grain, grade, structure, bond
G-17.05 - Finishes holes using a honing machine
Essential Skills: Thinking, Document Use, Numeracy
G-17.05 - Finishes holes using a honing machine
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-17.05.01P |
identify type of material to be honed |
type of material to be honed is identified according to specifications |
| G-17.05.02P |
monitor stone pressure |
stone pressure is monitored to eliminate distortion and optimize material removal |
| G-17.05.03P |
match stroke to rpm |
stroke is matched to rpm to achieve finish according to specifications |
| G-17.05.04P |
identify problems |
problems are identified |
| G-17.05.05P |
implement solutions |
problems are eliminated |
| G-17.05.06P |
check dimension of holes |
dimension of holes is checked according to specifications using inspection equipment |
Range of Variables
- material includes: steel, cast iron, bronze
- specifications include: design, standards, client, industry, manufacturers' drawings
- problems include: bell mouth, lack of cylindricity, chatter, lack of lubrication, glazing
- inspection equipment includes: bore gauges, inside micrometers, telescopic gauge
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-17.05.01L |
demonstrates knowledge of honing machines, their setup, maintenance and procedures for use |
identify types of honing machines, their setup and maintenance |
| identify types of tooling required for honing |
| identify honing techniques and describe their associated procedures |
| identify potential problems and describe their causes and solutions |
Range of Variables
- problems include: bell mouth, lack of cylindricity, chatter, lack of lubrication, glazing
- honing machines include: horizontal, vertical, CNC