numerical control machine tool workshop ambient temperature changes, motor heating, mechanical friction, cutting heat and cooling medium friction and other influences, resulting in uneven temperature rise of numerical control machine tool parts. The numerical control machine tool shape accuracy and machining accuracy change.

For example, when the 70 mm 1650 mm screw is machined with normal accuracy on the numerical control machine tool, the cumulative error of the workpiece machined from 7:30 am to 9:00 am is 85 m higher than that of the workpiece machined from 2:00 PM to 3:30 PM. At constant temperature, the error can be reduced to 40m. numerical control machine tool quote

Another example is a thin steel precision double-end grinding machine with double-sided grinding thickness of 0.6 ~ 3.5mm, which can process 200mm×25mm×1.08mm steel parts with dimensional accuracy of mm with a total bending degree of less than 5m. However, after continuous automatic grinding for 1 hour, the size range increased to 12m, and the coolant temperature rose from 17°C at start-up to 45°C. Spindle front bearing increases. Therefore, a 5.5KW refrigerator is added to the coolant tank of the numerical control machine tool, and the effect is very ideal.

It has been proved that the deformation of numerical control machine tool after heating is an important reason that affects the machining accuracy. But the machine is in the environment, the temperature can change at any time and anywhere; numerical control machine tool itself will inevitably consume energy in the management work, and a considerable part of these energies will be converted into heat in various teaching methods, causing the physical development and change of numerical control machine tool components. This change is due to different economic structure design forms, material differences and other reasons vary. numerical control machine tool designers should grasp the formation mechanism of heat and the basic law of temperature data distribution, and take corresponding measures to reduce the influence of thermal deformation on the machining accuracy of small enterprises.

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