milling

Machining Machining Manufacturing Processes Manufacturing Processes © 2012 Su-Jin Kim GNU © 2012 Su-Jin Kim GNU Milling • Cutting tool is rotated and traversed along 3 axes of motion to produce from simple rectangular plane, slot, hole and complex contour.

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Milling. Cutting tool is rotated and traversed along 3 axes of motion to produce from simple rectangular plane, slot, hole and complex contour. Milling. Machining center (CNC Milling). C Type. Bridge Type. 5AX M/C. Horizontal M/C. Vertical M/C. - PowerPoint PPT Presentation

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MachiningMachiningManufacturing ProcessesManufacturing Processes

Milling

• Cutting tool is rotated and traversed along 3 axes of motion to produce from simple rectangular plane, slot, hole and complex contour.

MachiningMachiningManufacturing ProcessesManufacturing Processes

Milling

MachiningMachiningManufacturing ProcessesManufacturing Processes

Machining center (CNC Milling)

Horizontal M/C

Bridge TypeC Type

Vertical M/C

5AX M/C

http://www.youtube.com/user/GlacernMachineTools

MachiningMachiningManufacturing ProcessesManufacturing Processes

• Huge 3+2 axis milling has additional rotation BC axis on head.

• Used for automobile door panel and bumper mold.

http://ma.gnu.ac.kr/vod/machining/Huge_machine_tools.AVI

http://ma.gnu.ac.kr/vod/machining/Huge_5axis.AVI

3+2 axis machining (5 면가공기 )

MachiningMachiningManufacturing ProcessesManufacturing Processes

5-axis machining (5 축가공기 )

• Has 2 tinting A C or B C axis on table or head.

Rotary table: http://ma.gnu.ac.kr/vod/Machining/Rotaty_table.MP4

Impeller : http://ma.gnu.ac.kr/vod/Machining/5axis_machining_impeller.MP4

MachiningMachiningManufacturing ProcessesManufacturing Processes

Automatic Tool Changer (ATC)

Changer Arm

Tool

Spindle

MachiningMachiningManufacturing ProcessesManufacturing Processes

Automatic Pallet Changer (APC)

Pallet #1

Pallet #2

MachiningMachiningManufacturing ProcessesManufacturing Processes

Work holding Vise, Clamp ( 치구 )

• Work is fixed by vise or clamp on the table with T-slot

Flex clamp: http://ma.gnu.ac.kr/vod/Machining/Clamp.MP4

http://www.youtube.com/user/GlacernMachineTools#p/u/5/J1VtofzVG24

MachiningMachiningManufacturing ProcessesManufacturing Processes

Tool holder, Tools

Holder + Collet + Solid Endmill Insert Endmill

http://www.youtube.com/watch?v=IPWGV_EGAHw&feature=related

MachiningMachiningManufacturing ProcessesManufacturing Processes

Tool holder, Tools

MachiningMachiningManufacturing ProcessesManufacturing Processes

Milling operations

Face CutterBasic: http://www.youtube.com/watch?v=j0vRYe9uvnI

Face: http://www.youtube.com/watch?v=9OsNUi_o6C4

Endmill: http://www.youtube.com/user/GlacernMachineTools#p/u/1/HfIaISnqHOk

Flat endmill (Slotting)

• Face cutter

• Endmill : Flat, Ball, Rounded

MachiningMachiningManufacturing ProcessesManufacturing Processes

Math for milling

• Cutting speed(mm/min) = 3.14 x Diameter x Spindle

V = π D S

• Feed per tooth = Feed / (Spindle x Number of teeth)

• MMR = Depth x Width x Feed MRR = d w F

SnFft /ft

F (mm/min)

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