The Part Drawing Given Refer To Attachment Is To Be Machined From A 100mm X 100mm X 25mm Bronze Work Piece A Boxford 1 (98.73 KiB) Viewed 75 times
The Part Drawing Given Refer To Attachment Is To Be Machined From A 100mm X 100mm X 25mm Bronze Work Piece A Boxford 2 (55.2 KiB) Viewed 75 times
The part drawing given (refer to attachment) is to be machined from a 100mm x 100mm x 25mm Bronze work piece. A Boxford vertical three-axes CNC machining center will be used for the process together with the following tools: (i) 10mm dia. CC Flat End Mill (ii) 10mm dia. HSS Flat End Mill (3 flutes) Starting at position 'A' using absolute positioning, and moving in a clockwise direction, perform the necessary operations with rough passes to be made first in a clockwise direction followed by finishing/ cleaning passes. Use tool-offset calculations and canned cycle approach. Calculations to determine the co-ordinates for the chamfer and centre points of the holes must clearly be shown. Use coolant for manufacture of the part. A report (hardcopy) is to be submitted with the following sections: (i) (ii) (iii) (iv) (v) (vi) Process Plan - Outline the operations, tooling, etc. for the completion of the part (5 marks) Calculations (cutting parameters) - Show all relevant calculations and solutions (5 marks) Toolpath Sketches/ Drawing (10 marks) Cutter Location Data Table (co-ordinates; tool-offset calculations, chamfer and centre point calculations) (10 marks) NC Program (including Explanations/Comments at the side of each block/line) (10 marks) Discussion - Analyse the expected differences for the following changes: (5 marks) • 8mm dia. Cemented Carbide flat end mill and 25mm dia. HSS flat end mill (2 flutes) are provided. (2 marks) Coolant is not used. (1 mark) Cutter compensation is used. (1 mark) Canned cycle approach not implemented. (1 mark) Conclusion (5 marks) • (vii)
R 10.00 . 10.00 R 15.00 0 10.00 0 50.00 + 100.00 + + 45° 1 10.00 A 15.00 10.00 20.00 25.00 100.00 Figure 1: Part Drawing All dimensions are in millimetres
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