1. Point contact - a widely used type of five axis machining.

所謂的點(diǎn)接觸加工是指在加工過程中點(diǎn)接觸形成加工方法，如球面銑刀、球面砂輪磨削。這種類型的加工的主要特點(diǎn)是:球面法向量指向整個(gè)空間,表面法向量的處理有適應(yīng)能力,和線,表面接觸處理相比,其編程簡單,計(jì)算,只要這工具半徑小于曲率半徑的表面可以避免干擾。因此適用于任何表面處理。但由于接觸成型的原因，切削速度接近于零，因此切削條件差，加工精度和效率低。

Point contact machining refers to the processing method of forming contact at the middle point during the process of machining, such as spherical milling cutter and spherical grinding wheel. The main characteristics of this type of machining are: the spherical normal vector points to the whole space, and the surface normal vector processing has adaptability. Compared with the line and surface contact treatment, the programming is simple and the calculation is simple. As long as the tool radius is less than the radius of curvature, interference can be avoided. Therefore, it is applicable to any surface treatment. But because of the contact forming, the cutting speed is close to zero, so the cutting conditions are poor, and the machining accuracy and efficiency are low.

2、表面接觸

2. Surface contact

所謂的表面接觸加工是指表面接觸形成加工方法，如磨面(磨)加工。這類加工的主要特點(diǎn)是:由于切割點(diǎn)具有較高的切削速度，所以循環(huán)進(jìn)料較大，加工效率高，加工精度高。然而，由于模具的成型方法和刀具的形狀，它主要適用于較平加工表面的凸曲線變化。

The so-called surface contact processing refers to the surface contact forming processing method, such as grinding surface (grinding) processing. The main characteristics of this kind of machining are: because the cutting point has a high cutting speed, the feed is recycled, the processing efficiency is high and the machining precision is high. However, due to the forming method and the shape of the tool, it is mainly suitable for the convex curve change of the flat surface.

3、線接觸——五坐標(biāo)加工數(shù)控加工電流和未來的研究。

3. Line contact - the research focus of the current and future of NC machining in five coordinate machining.

所謂的線接觸加工是指加工過程中與線接觸的過程，如圓柱形周銑、錐銑、凸輪軸鉆進(jìn)和帶磨。這種加工的特點(diǎn)是切削速度高，加工精度高。同時(shí)，由于接觸成型，加工效率得到了提高。已發(fā)展到任何曲面接觸加工研究。

The so-called line contact machining refers to the process of contact with the line during the process, such as cylindrical milling, taper milling, camshaft drilling and belt grinding. The characteristics of this kind of machining are high cutting speed and high machining precision. At the same time, the processing efficiency has been improved due to contact forming. It has been developed to any surface contact machining research.

五軸雕刻機(jī)的優(yōu)勢在于工件容易夾緊。加工無特殊夾具，減少夾具成本，避免了大量夾具，提高模具加工精度。使用五軸加工模具可以減少使用的夾具數(shù)量。另外，由于五軸機(jī)床可以在加工過程中節(jié)省很多特殊的工具，所以降低了刀具的成本。五軸數(shù)控機(jī)床可以提高刀具的有效切削刃長度，減少切削力，提高刀具壽命，降低成本。

The advantage of five axis engraving machine is that the workpiece is easy to clamp. There are no special fixtures in the process, which reduces the cost of the fixture, avoids a large number of clamps, and improves the machining accuracy of the die. The number of fixtures used can be reduced by using five axis machining dies. In addition, the cost of the tool is reduced because the five axis machine tool can save a lot of special tools in the process of machining. The five axis CNC machine tool can improve the effective cutting edge length, reduce cutting force, improve the tool life and reduce the cost.

使用五軸機(jī)床加工模具可快速完成模具加工，快速交貨，更好的保證模具加工質(zhì)量，模具加工變得更容易，并使模具修改更容易。在傳統(tǒng)的模具加工中，一般采用立式加工來完成工件的銑削加工。隨著模具制造技術(shù)的不斷發(fā)展，立式加工本身的一些缺點(diǎn)也越來越明顯。現(xiàn)代模具加工一般使用球頭銑刀來處理,球銑刀在模具加工的好處很明顯,但是如果立式加工,然后底部的線路速度為零,所以完成的底部很差,如果用四、五軸加工加工技術(shù)加工模具,可以克服以上的缺點(diǎn)。

The die processing can be completed quickly by using five axis machine tool, and the delivery can be made quickly, so as to ensure the quality of the die processing better. The mold processing becomes easier and the modification of the die is easier. In the traditional die processing, vertical machining center is generally used to finish the milling of workpiece. With the development of mold manufacturing technology, some shortcomings of vertical machining center itself are becoming more and more obvious. Ball end milling cutter is generally used in modern die processing. The advantages of ball milling cutter in die processing are obvious. However, if the vertical machining center and the line speed of the bottom is zero, the bottom is very poor. If the four or five axis processing technology is used to process the mold, the above shortcomings can be overcome.