The role of the lathe tool holder
The tool holder on the CNC machine tool is an important part for placing the tool. Many tool holders are also directly involved in the cutting work, such as the square tool holder on the horizontal lathe, the turret tool holder on the turret lathe, and the return wheel on the wheeled turret lathe. Tool rests, turret tool rests and balance tool rests for automatic lathes, etc.
These tool holders not only place the tools, but also directly participate in cutting and bear great cutting force, so they often become the weak link in the process system. With the development of automation technology, the tool rest of machine tools has also undergone many changes, especially the automatic tool rest that uses electric (hydraulic) transposition on CNC lathes, and some also use two rotary tool heads.
The machining center further adopts a tool magazine and a tool changing manipulator, which realizes the functions of large-capacity storage tools and automatic tool exchange. The number of tools placed in this tool magazine ranges from dozens to hundreds, and the time for automatic tool exchange is from Tens of seconds are reduced to a few seconds or even tenths of a second.
Tool holder basic requirements
1. Short tool change time to reduce non-processing time.
2. Reduce the interference of the tool changing action on the processing range.
3. The tool has high repeat positioning accuracy.
4. Reliable tool recognition and tool selection, and simple and reliable tool change.
5. The storage capacity of the tool magazine is reasonable.
6. The tool magazine occupies a small area and can cooperate with the host to make the appearance of the machine tool harmonious and beautiful.
7. The tool is easy to load and unload, adjust and maintain, and can be cleaned and maintained.
