Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
795
W3: Tool change
16
16.1 Brief Description
Tool change
CNC-controlled machine tools are equipped with tool magazines and automatic tool change
facility for the complete machining of workpieces.
Sequence
The procedure for changing tools comprises three steps:
1. Movement of the tool carrier from the machining position to the tool change position
2. Tool change
3. Movement of the tool carrier from the tool change position to the new machining position.
Requirements
The following is required for tool change:
● short idle times
● Time-saving searches, provision and return of tool during the machining time.
● Simple programming of the tool change cycle
● Automatic flow of the required axis and gripper movements
● Easy fault recovery
16.2 Tool magazines and tool change equipments
Tool magazines and tool changing equipment are selected according to the machine type:
Machine type Tool magazine Tool change equipment
Turning machines Turret
(disk, flat, inclined)
No special tool change equipment.
The tool is changed by turning the
turret
Milling machines Magazines
(chain, disk-type, rotary-plate, cartridge)
Gripper/dual gripper as tool change
equipment.
As the changing operation interrupts the machining, idle times times must be minimized.
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