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How to reduce the thermal deformation of milling machine

 

In order to reduce the thermal deformation in the milling planer structure usually adopt the following measures.

Reason: under the influence of internal and external heat source, gantry milling machine parts will be different degree of thermal deformation, make the relative motion relationship between the workpiece and tool was broken, for milling planer, because all the processing process is calculated command control, the influence of thermal deformation is more serious.

1: the control of temperature rise

After took a series of measures to reduce the heat source, thermal deformation situation will improve. But to compley eliminate milling planer, both inside and outside heat source is often very difficult, even impossible. So must be good to control the temperature of cooling and cooling, in order to reduce the influence of heat source. Which department is in longmen milling machine is a effective method of forced cooling heating parts, also can be in longmen milling machine parts in low temperature by heating method, makes the milling planer each point temperature uniformity, so that we can reduce the buckling deformation caused by temperature difference.

2: reduce fever

Milling planer internal heat produced when the main heat source of hot deformation, should as far as possible to the heat source is separated from the host.

3: the spindle box of improvement

For gantry milling machine spindle box, should try to make the spindle thermal deformation occurred on the cutter cuts the vertical direction. This can make the spindle thermal deformation reduced to minimal impact on machining diameter. In structure should also minimize the spindle center and the main shaft to the distance of the ground, in order to reduce the amount of the thermal deformation, at the same time should be made before and after the temperature rise of headstock is consistent, to avoid the main shaft deformation after the tilt.

4: improve the milling planer mechanism

Under the same heating condition, milling planer mechanism has a great influence on the thermal deformation is also. Such as milling planer used single mast mechanism may be replaced by double column body. Due to the left and right sides is symmetrical, dual axis line of the mast mechanism after heated in addition to produce the vertical translation, other direction deformation is small, and vertical axis movement can easily use a coordinate correction to compensate.