How to prevent thermal deformation of the gantry milling machine? I briefly summarized the following points:
1: Control the temperature rise After a series of measures to reduce the heat source are taken, the thermal deformation will be improved. However, it is usually very difficult or even impossible to completely eliminate the internal and external heat sources of the gantry milling machine. Therefore, the temperature rise must be controlled through good heat dissipation and cooling to reduce the influence of the heat source. The most effective method is to force cooling in the heating part of the gantry milling machine. You can also heat the low temperature part of the gantry milling machine to make the temperature of each point of the gantry milling machine uniform, which can reduce the warping deformation caused by the temperature difference.
2: Reduce the main heat source that produces thermal deformation when the internal heating of the heating gantry milling machine is heated, and the heat source should be separated from the host as much as possible.
3: Improvement of the spindle box For the spindle box of the gantry milling machine, the thermal deformation of the spindle should be made as far as possible to occur in the vertical direction of the cutting tool. This can minimize the influence of the thermal deformation of the spindle on the machining diameter. In terms of structure, the distance between the center of the main shaft and the main shaft to the ground should be reduced as much as possible to reduce the total amount of thermal deformation. At the same time, the temperature rise of the headstock box should be consistent before and after to avoid tilting of the main shaft after deformation.
4: Improve the gantry milling machine mechanism. Under the same heating conditions, the gantry milling machine mechanism also has a great influence on thermal deformation. For example, the single-column mechanism used in the gantry milling machine in the past may be replaced by a double-column mechanism. Due to the left-right symmetry, the main axis of the double-column mechanism after heating produces little deformation in other directions except for the vertical translation, and the vertical axis movement can be easily compensated by a coordinate correction.
The above is the method to prevent thermal deformation of the gantry milling machine. Welcome to consult.