-SQA-SCOTTISH QUALIFICATIONS AUTHORITY HIGHER NATIONAL UNIT SPECIFICATION GENERAL INFORMATION MACHINE WOODWORKING: CNC MACHINING (ROUTING)

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1 -SQA-SCOTTISH QUALIFICATIONS AUTHORITY HIGHER NATIONAL UNIT SPECIFICATION GENERAL INFORMATION -Unit number- D2VV 04 -Unit title- -Superclass category- MACHINE WOODWORKING: CNC MACHINING (ROUTING) WK -Date of publication- 1 AUGUST 2000 (month and year) -Originating centre for unit- SQA DESCRIPTION- GENERAL COMPETENCE FOR UNIT: On completion of this unit the candidate will be competent in operating a CNC machine to safely produce a component. OUTCOMES: 1. prepare for machining; 2. load and prove the part program; 3. set the machine for production; 4. machine the component. CREDIT VALUE: 1 HN Credit. ACCESS STATEMENT: Access to this unit is at the discretion of the centre. However, it would be helpful if the candidate had successfully completed a SVQ level 2 plus the mandatory workplace assessed units in SVQ level 3 Woodmachining. The unit forms part of the Advanced Certificate in Machine Woodworking and is aimed at candidates following a career in machine woodworking and receiving complementary industrial experience

2 Additional copies of this unit can be obtained from: The Committee and Administration Unit, SQA, Hanover House, 24 Douglas Street, Glasgow G2 7NQ, (Tel: ). At the time of publication the cost is 1.50 per unit (minimum order 5.00). 2

3 HIGHER NATIONAL UNIT SPECIFICATION STATEMENT OF STANDARDS Unit number: D2VV 04 Unit title: MACHINE WOODWORKING: CNC MACHINING (ROUTING) Acceptable performance in this Unit will be the satisfactory achievement of the standards set out in this part of the specification. All sections of the statement of standards are mandatory and cannot be altered without reference to SQA. OUTCOME 1. PREPARE FOR MACHINING PERFORMANCE CRITERIA (a) (b) (c) (d) Identify tooling and tool number correctly. Fabricate a suitable fixture accurately. Select suitable holding and location devices. Apply holding and location devices appropriately. RANGE STATEMENT Tooling and equipment: standard and special cutters; drills; saws; base boards; grid plates; clamps; vices; turnbuttons; cams; screws; spikes; pins; vacuum holding; location devices; single and pendulum operation; manual and automatic tool changes. EVIDENCE REQUIREMENTS Evidence of actual performance is needed to show the candidate can prepare for machining by complying with tooling specification, fabricating a fixture incorporating required features, applying functional devices of substantial construction, applying correct location and securing fixing. All working practices must be in line with current and relevant health and safety legislation and regulations. All performance criteria must be met and all items in the range statement covered. 3

4 OUTCOME 2. LOAD AND PROVE THE PART PROGRAM PERFORMANCE CRITERIA (a) (b) (c) (d) The program is transferred to the control unit successfully. A dry run is initiated and errors eliminated. A test run is given without tools and program validity checked. Program is modified in accordance with findings of test run. RANGE STATEMENT Operations: use of personal computer; program transfer; load; save; direct input; modify; insert; file protection; manual operation; automatic operation; dry run; test run; error messages. EVIDENCE REQUIREMENTS Evidence of actual performance is needed to show the candidate can transmit the program to the control unit, run the program in memory, complete a test run, make essential modifications to the program/set up. All working practices must be in line with current and relevant health and safety legislation and regulations. All performance criteria must be met and all items in the range statement covered. OUTCOME 3. SET THE MACHINE FOR PRODUCTION PERFORMANCE CRITERIA (a) (b) (c) (d) (e) Tools are inserted in correct order in the tool magazine and length offsets established. The fixture and guards are applied correctly. Inputs tools and fixture offset data to the control unit correctly. Applies a component to the fixture and makes necessary adjustments. Work methods and activities are correct in terms of: (i) (ii) sequencing operations; satisfying correct safety regulations. 4

5 RANGE STATEMENT Tooling and equipment: single tools; stacked tools; tool blocks; saws; drills; location pieces; hoods; brushes; guards; interlocks; chucks; collets; automatic tool changer; rubber seals; vacuum pump. Operation: manual; automatic; direct input. EVIDENCE REQUIREMENTS Evidence of actual performance is needed to show the candidate can set the machine for 2-dimensional and multi-station work. All working practices must be in line with current and relevant health and safety legislation and regulations. All performance criteria must be met and all items in the range statement covered. OUTCOME 4. MACHINE THE COMPONENT PERFORMANCE CRITERIA (a) (b) (c) (d) A trial run is initiated safely. Modifications are made correctly. A production run is completed successfully. Work methods and activities are correct in terms of: (i) (ii) (iii) sequencing work; minimising wastage of materials; satisfying current safety regulations; RANGE STATEMENT Tooling and equipment: tool store; single tools; stacked tools; tool blocks; saws; drills; location pieces; hoods; brushes; guards; interlocks; chucks; collets; automatic tool changer; rubber seals; vacuum pump. Operation: manual; automatic; direct input. 5

6 EVIDENCE REQUIREMENTS Evidence of actual performance is needed to show the candidate can produce a dimensionally accurate component, produce a defect free surface finish, comply with program instructions with particular regard to safe operation. All working practices must be in line with current and relevant health and safety legislation and regulations. All performance criteria must be met and all items in the range statement covered. MERIT STATEMENT: To gain a pass in this unit, a candidate must meet the standards set out in the outcomes, performance criteria, range statements and evidence requirements. A pass with merit may be awarded to a candidate who substantially exceeds the minimum requirements of the unit for practical competence in outcomes 1, 2, 3 and 4 and who consistently demonstrates at least 5 from: (a) (b) (c) (d) (e) (f) (g) clarity and depth of descriptive responses; logical sequencing of work; optimum use of time and resources; high organisational ability; high motivation; high analytical skills; high awareness of, and compliance with, safety requirements. ASSESSMENT In order to achieve this unit, candidates are required to present sufficient evidence that they have met all the performance criteria for each outcome within the range specified. Details of these requirements are given for each outcome. The assessment instruments used should follow the general guidance offered by the Scottish Qualifications Authority (SQA) assessment model and an integrative approach to assessment is encouraged. (See references at the end of support notes). Accurate records should be made of the assessment instruments used showing how evidence is generated for each outcome and giving marking schemes and/or checklists, etc. Records of candidates achievements should be kept. These records will be available for external verification. SPECIAL NEEDS Proposals to modify outcomes, range statements or agreed assessment arrangements should be discussed in the first place with the external verifier. 6

7 Copyright SQA 1999 Please note that this publication may be reproduced in whole or in part for educational purposes provided that: (i) (ii) no profit is derived from the reproduction; if reproduced in part, the source is acknowledged. 7

8 HIGHER NATIONAL UNIT SPECIFICATION SUPPORT NOTES Unit number: D2VV 04 Unit title: MACHINE WOODWORKING: CNC MACHINING (ROUTING) SUPPORT NOTES: This part of the unit specification is offered as guidance. None of the sections of the support notes is mandatory. NOTIONAL DESIGN LENGTH: SQA allocates a notional design length to a unit on the basis of time estimated for achievement of the stated standards by a candidate whose starting point is as described in the access statement. The notional design length for this unit is 40 hours. The use of notional design length for programme design and timetabling is advisory only. PURPOSE This unit is designed to enable the candidate to develop the skills and knowledge required in order to be able to complete a practical project involving setting up and using a C.N.C. router to machine an appropriate component. It is suitable for operatives working in machine woodworking crafts. This unit will help you to acquire the skills and knowledge to prepare and load the part program as well as setting up and using the machine to produce the component. On completion of the unit you will be able to operate a C.N.C. machine in order to produce a component using procedures relevant to current safety legislation. CONTENT/CONTEXT The candidate successfully completing this unit will require basic knowledge of machine woodworking processes. The unit deals with the setting up and operation of a CNC routing machine. The unit is offered to candidates involved in machine woodworking or related trades and is complemented by other CNC units. The following may be helpful with regard to specific outcomes: Outcome 4 The following safety requirements apply: HSW Act (Health and Safety at Work etc Act); COSHH (Control of Substances Hazardous to Health) Regulations; PUWER (Provision and Use of Work Equipment Regulations; HSC Approved Code of Practice and Guidance on the Safe Use of Woodworking Machinery (ISBN ). 8

9 APPROACHES TO GENERATING EVIDENCE The candidate should be provided with a brief, comprising of a piece part drawing and specification together with, tooling list, fixture details and a part program. Demonstrations, instructions and information sheets together with guidance should be given at every stage, but the brief must be completed on the students initiative in order to achieve an accurate assessment of ability. ASSESSMENT PROCEDURES Since the unit comprises almost entirely of practical work, an assignment would be a suitable means of assessment. Where possible work progressed from unit... CNC Part Programming should be utilised, where this is not appropriate agreed exemplars could be used. Assignment The assignment should include sufficient information for the assessment of all outcomes and performance criteria to pass and merit standard. A pass with merit should be commensurate with the inclusion of complex component features such as external and internal profiling, multi-station work or work of similar complexity. EXEMPLARS PROGRESSION This unit forms part of the programme for the Advanced Certificate in Machine Woodworking. Candidates successfully completing the Advanced Certificate will be able to progress to the HNC in Construction Practice. Each unit is a separate part of the framework of units for the award and units are not necessarily taken in a prescribed order, although there is a logical sequence to the acquisition of the skills and knowledge concerned. To gain the award the candidate must successfully complete all of the following mandatory units: Machine Woodworking: Shaping Machines Machine Woodworking: Sawing Machine Woodworking: Planing, Moulding and Sanding Machine Woodworking: Computer Aided Manufacture (CAM) Machine Woodworking: Jointing Techniques plus any two of the following optional units: Machine Woodworking: Profile Grinding Machine Woodworking: Setting Out Machine Woodworking: CNC Machining (Routing) Machine Woodworking: CNC Part Programming (Routing) RECOGNITION REFERENCES 9

10 1. Guide to unit writing, SQA, 1993 (Code: A018). 2. Guide to assessment, SQA, 1993 (Code: B005). 3. Guide to certification, SQA, 1996 (Code: F025). 4. Notes for unit writers, SQA, 1995 (Code: A041). For details of other SQA publications, please contact staff in the Sales and Despatch section (Tel: ) who can supply you with a copy of the publication list (Code: X037). Copyright SQA 1999 Please note that this publication may be reproduced in whole or in part for educational purposes provided that: (i) (ii) no profit is derived from the reproduction; if reproduced in part, the source is acknowledged. 10