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View Unit : Making Strip Spring Components using Shearing Machines

Unit
Unit Reference Number
Y/600/5699
Qualification Framework
QCF
Title
Making Strip Spring Components using Shearing Machines
Unit Level
Level 3
Unit Sub Level
None
Guided Learning Hours
91
Unit Credit Value
30
Date of Withdrawal
SSAs
4.1 Engineering
Unit Grading Structure
Pass
Assessment Guidance

This unit must be assessed in a work environment and must be assessed in accordance with the ‘Common Requirements for National Vocational Qualifications (NVQ) in the QCF’ which can be downloaded from Semta’s website: http://www.semta.org.uk/training_providers__awarding/national_occupational_standard/qca_assessment_requirements.aspx

Additional assessment requirements have been published by Semta. These additional assessment requirements are set down in Semta’s Mechanical Manufacturing Engineering Suite 3 unit assessment strategy which can be downloaded from Semta’s website: http://www.semta.org.uk/training_providers__awarding/national_occupational_standard/qca_assessment_requirements.aspx

Learning Outcomes and Assessment Criteria
Learning Outcome - The learner will:Assessment Criterion - The learner can:
1

1a. Make strip spring components using shearing machines

1.1

Work safely at all times, complying with health and safety and other relevant regulations and guidelines

1.2

Carry out all of the following in preparation for the spring making activities:

• obtain and interpret correctly the documentation for the type of spring being made (such as job instructions, spring drawings and quality documentation)

• adhere to procedures or systems in place for risk assessment, COSHH, personal protective equipment and other relevant safety regulations and procedures to realise a safe system of work

• check that the machine and cutting blades are in a safe and usable condition

• set the cutting blades for the thickness of material being cut (where applicable)

• set up back stops where multiple components are required

• carry out the setting-up activities, following good practice/approved procedures

• ensure that correctly adjusted machine guards/safety devices are in place, and that they operate correctly

• leave the machine and work area in a safe and clean condition on completion of the ...

1.3

... setting-up activities

1.4

Confirm that the machine is set up and ready for the machining activities to be carried out

1.5

Cut materials for strip spring components, using one of the following types of shearing machine:

• guillotine

• cropping machine

1.6

Manipulate the machine tool controls safely and correctly in line with operational procedures

1.7

Produce components to the required quality and within the specified dimensional accuracy

1.8

Cut strip spring components from two appropriate materials from the following:

• mild steel

• carbon steel

• stainless steel

• alloy steel

• copper based alloy

• nickel based alloys

• titanium and other special material

2

1b. Make strip spring components using shearing machines (continued)

2.1

Cut materials using both of the following techniques:

• to marking out

• using machine backstop for multiple cutting

2.2

Perform operations that produce straight and accurate cuts, which include two of the following:

• parallel cuts

• square cuts

• cuts at an angle

2.3

Carry out quality sampling checks at suitable intervals

2.4

Produce strip spring components which meet all of the following quality and accuracy standards:

• dimensional accuracy is within the tolerances specified on the drawing/specification

• cut components are free from excessive distortion

• cut edges are neat and free from false tool cuts and shearing slivers and burrs

2.5

Complete all relevant documentation on completion of the strip spring making activities, to include one of the following:

• job cards

• quality control documentation

• company-specific documentation

• computer records

• test documents

2.6

Deal promptly and effectively with problems within their control and report those that cannot be solved

2.7

Shut down the equipment to a safe condition on conclusion of the machining activities

3

2a. Know how to make strip spring components using shearing machines

3.1

Describe the specific safety precautions to be taken when setting up shearing machines (such as general workshop safety, appropriate personal protective equipment, accident procedure; statutory requirements, risk assessment procedures and relevant requirements of HASAWA, COSHH and Work Equipment Regulations)

3.2

Describe the importance of wearing the appropriate protective clothing and equipment (such as leather gloves, eye protection), and of keeping the work area clean and tidy

3.3

Describe the handling precautions and correct methods of moving or lifting sheet or plate materials, and the equipment to be used for this

3.4

Describe the hazards associated with working on shearing machines (such as using moving parts of machinery, shearing blade malfunction, using dangerous or badly maintained tools and equipment, lifting and handling sheet materials), and how to minimise them and reduce any risks

3.5

Describe the checks to be carried out to ensure that the shearing machine is in a safe and fit condition to use

3.6

Describe the safety mechanisms on the machine, and the procedure for checking that they function correctly

3.7

Explain how to start and stop the machine in normal and emergency situations

3.8

Describe the importance of ensuring that the machine is isolated from the power supply before setting up the various operating mechanisms

3.9

Explain how to check that the shearing machine blades are in a safe and serviceable condition, and their care and maintenance procedures

3.10

Explain how to obtain the necessary drawings, specifications and job instructions

3.11

Explain how to extract and use information from engineering drawings and related specifications (to include symbols and conventions to appropriate BS, ISO or BSEN standards) in relation to work undertaken

3.12

Explain how to interpret first and third angle drawings, imperial and metric systems of measurement, workpiece reference points and system of tolerancing

4

2b. Know how to make strip spring components using shearing machines (continued)

4.1

Describe the terminology used in shearing machines and shearing operations in relation to the activities undertaken and types of springs produced

4.2

Explain how to interpret marking out conventions (cutting lines, centre lines, etc)

4.3

Describe the various shearing machine cutting methods and techniques (such as cutting to marking out, using the machine backstops for multiple pieces and setting guides for angled cuts)

4.4

Describe the material handling and preparation methods (such as degreasing, de-burring, straightening)

4.5

Describe the method of setting and adjusting shearing blades for the material thickness

4.6

Describe the tool and equipment care and control procedures, and how to recognise when the cutting blades require changing

4.7

Describe the importance of using tools or equipment only for the purpose intended; the care that is required when using the tools or equipment; the proper way of preserving tools or equipment between operations

4.8

Describe the safety mechanisms and devices that are on the machine, and why they must always be used (such as machine guards, interlocks, safety operating devices)

4.9

Describe the things that can go wrong when shearing materials, and how these can be avoided

4.10

Describe the inspection techniques that can be applied to check that shape and dimensional accuracy are to specification and within acceptable limits

4.11

Describe the importance of completing all relevant documentation on conclusion of the spring making activities

4.12

Describe the extent of their own authority and to whom they should report if they have problems that they cannot resolve

Equivalent Units
There are no equivalences to display.
2.1.3.0L