How universal milling machine process to reduce the error caused by thermal deformation of the system?

1, how universal milling machine process to reduce the error caused by thermal deformation of the system? Why precision machine tools in the processing operation for some time before the air?
A: The process system to reduce errors caused by thermal distortion measures: adequate cooling, reducing the temperature rise; milling machine in the thermal equilibrium state for processing; temperature premise in precision machining.
Precision universal milling thermal effects of deformation on the machining accuracy is more significant. Because the volume and quality of the machine, so the heat from the beginning to its temperature will remain basically unchanged, namely to achieve thermal equilibrium, takes a long time. Universal milling machine in the heating process continued deformation, difficult to control the machining dimensions. Therefore, precision universal milling prior to processing, should be running empty for some time to warm up, thermal equilibrium to be reached, then processing

2, machined surface quality is needed? Surface quality of parts used functions have any effect?
A: The surface quality is the Universal rocker X5036 vertical milling machine parts surface layer state after processing, is a measure of the quality of machining is an important aspect. It includes the surface of the coarse and heavy, surface layer state of the metal microstructure, mechanical function and the size and nature of residual stress.
Surface quality of parts used functional effects can be divided into:
(1) Horizontal milling machine  is the degree of impact on the surface of coarse and heavy degree of influence with the nature of the surface of coarse and heavy, wear resistance, fatigue strength and corrosion resistance.
(2) work hardening work hardening layer can affect the progress of the wear resistance of parts, but will harden over a small surface cracks and spalling, increased wear and tear parts.
(3) surface residual stress X6036A horizontal universal milling machine parts surface in the processing or heat treatment process if the compressive stress, may be appropriate to progress the fatigue strength of parts.

3, coarse and heavy impact on the surface of the main factors which? What methods can be used to reduce the surface of the coarse and heavy degree of value?
A: The impact of surface coarse and heavy degrees of factors much be summed up in the following four points:
(1) Drilling milling machine tool geometry.
(2) cutting.
(3) BUE and scales thorns.
(4) vibration.
Those who can reduce the residual area and height, reduce vibration, reduce or inhibit the active vertical milling machine up edge height and scale methods can reduce the surface prickly coarse and heavy degree of value. From the tool geometry parameters, may be appropriate to reduce the angle and vice nose radius increases may be necessary to grind the wiper from the cutting, and may be appropriate to reduce the feed. Also from the reduced friction between the tool and workpiece, squeeze the start, the tool was sharp grinding, cutting fluid and filling some toughness, good appropriate workpiece materials and heat treatment.