What's the difference between high efficiency centerless cylindrical grinding and common cylindrical grinding of four axis engraving machine? Centerless cylindrical grinding has no headstock and tailstock, but supports the workpiece by supporting plate and guide wheel, and grinds with grinding wheel. Centerless grinding method is composed of grinding wheel, adjusting wheel and workpiece support. The grinding wheel is actually responsible for grinding. The adjusting wheel controls the rotation of the workpiece and makes the workpiece feed speed. The workpiece support supports the workpiece during grinding. The productivity of centerless cylindrical grinder is high. It is used in mass production and easy to realize automation

普通外圓磨削

General cylindrical grinding

四軸保麗龍雕刻機的普通外圓磨削利用工件兩端的孔，把工件支承在磨床的頭架及尾座間，磨削時工件在主軸帶動下作旋轉運動，砂輪作橫向進給。

The common cylindrical grinding of 4-axis styrofoam engraving machine uses the center holes at both ends of the workpiece to support the workpiece between the center of the head frame and tailstock of the grinder. During grinding, the workpiece rotates under the drive of the spindle, and the grinding wheel feeds transversely.

無心外圓磨削

Centerless cylindrical grinding

無心外圓磨它沒有頭架和尾架，而是由托板和導輪支持工件，用砂輪進行磨削。無心研削法它是由磨削砂輪，調整輪和工件支架三個機構構成，其中磨削砂輪實際擔任磨削的工作，調整輪控制工件的旋轉，并使工件發生進刀速度，工件支架在磨削時支撐工件。無心外圓磨床生產率較高。多用于大量生產，易于實現自動化。

Centerless cylindrical grinding has no head frame and tail frame, but supports the workpiece by supporting plate and guide wheel, and grinds with grinding wheel. Centerless grinding method is composed of grinding wheel, adjusting wheel and workpiece support. The grinding wheel is actually responsible for grinding. The adjusting wheel controls the rotation of the workpiece and makes the workpiece feed speed. The workpiece support supports the workpiece during grinding. The productivity of centerless cylindrical grinder is high. It is used in mass production and easy to realize automation.

無心外圓磨削較普通外圓磨削的特點

Characteristics of centerless cylindrical grinding compared with common cylindrical grinding

連續加工，無需退刀，裝夾工件等時間短，生產率高。

Continuous processing, no tool withdrawal, short clamping time and high productivity.

四軸雕刻機的無心外圓磨床工件靠外圓在定位機構上定位，磨削量是工件直徑上的余量，故砂輪的磨損、進給機構的補償和切入機構的重復定位精度誤差對零件直徑尺寸精度的影響，只有普通外圓磨床的一半，不需打孔，且易于事先上、下料自動化。

The workpiece of centerless cylindrical grinder of four axis engraving machine is located on the positioning mechanism by the outer circle, and the grinding amount is the allowance on the diameter of the workpiece. Therefore, the influence of grinding wheel wear, feed mechanism compensation and repeated positioning accuracy error of cutting mechanism on the diameter and dimension accuracy of parts is only half of that of ordinary cylindrical grinder, and there is no need to drill the central hole, and it is easy to load and unload materials in advance.

四軸雕刻機的磨削表面易產生奇數次棱圓度，如較大時往往會造成測量尺寸小于實體尺寸的錯覺，而影響裝配質量和工作性能。 機床調整較復雜、費時，每更換不同直徑的工件就需沖調整托架高度，與距離及有關的工藝參數。故調整技術難度較大，不適宜小批及單件生產

The grinding surface of four-axis engraving machine is easy to produce odd degree of edge roundness. If it is large, it often causes the illusion that the measured size is less than the maximum solid size, which affects the assembly quality and working performance. The adjustment of the machine tool is complex and time-consuming. It is necessary to adjust the height of the bracket, the distance and the related process parameters when changing the workpieces with different diameters. Therefore, it is difficult to adjust the technology, which is not suitable for small batch and single piece production