济南手板加工精度高，能够准确地控制产品质量，再加上生产效率高，是现在很多大型的手板厂常用的手板加工方法。但手板的加工精度还是会存在差异，这其中的原因可以从以下几个方面来分析。

Jinan hand board processing has high precision, can accurately control product quality, and high production efficiency. It is now a common hand board processing method used by many large hand board factories. However, there will still be differences in the processing accuracy of the prototype, and the reasons can be analyzed from the following aspects.

1、尺寸精度

1. Dimensional accuracy

指加工后零件的实际尺寸与零件尺寸的公差带的相符合程度。尺寸精度是用尺寸公差来控制的。尺寸公差是切削加工中零件尺寸允许的变动量。在基本尺寸相同的情况下，尺寸公差越小，则尺寸精度越高。

It refers to the conformity between the actual size of the part after machining and the tolerance zone center of the part size. Dimensional accuracy is controlled by dimensional tolerance. The dimensional tolerance is the allowable variation of the part size in machining. When the basic dimensions are the same, the smaller the dimensional tolerance, the higher the dimensional accuracy.

2、形状精度

2. Shape accuracy

指加工后的零件表面的实际几何形状与理想的几何形状的相符合程度。评定形状精度的项目有直线度、平面度、圆度、圆柱度、线轮廓等6项。形状精度是用形状公差来控制的，各项形状公差，除圆度、圆柱度分13个精度等级外，其余均分12个精度等级。1级高，12级低。

It refers to the degree to which the actual geometric shape of the machined part surface conforms to the ideal geometric shape. The evaluation items of shape accuracy include straightness, flatness, roundness, cylindricity, line profile, etc. The shape accuracy is controlled by the shape tolerance. Except for the 13 accuracy levels of roundness and cylindricity, all the shape tolerances are equally divided into 12 accuracy levels. Level 1 high, level 12 low.

3、位置精度

3. Position accuracy

指加工后零件有关表面之间的实际位置精度差别。评定位置精度的项目有平行度、垂直度、倾斜度、同轴度、对称度、位置度、圆跳动和全跳动等八项。位置精度是用位置公差来控制的，各项目的位置公差亦分为12个精度等级。

It refers to the actual position accuracy difference between the relevant surfaces of the parts after machining. The items for evaluating the position accuracy include parallelism, perpendicularity, inclination, coaxiality, symmetry, position, circular runout and total runout. The position accuracy is controlled by the position tolerance, and the position tolerance of each project is also divided into 12 accuracy levels.

4、刀具：加工机所用的刀一般是钨钢刀，这种刀一般使用几次之后，刀会有磨损，这样在刀的方面也存在误差。

4. Cutter: The cutter used by the machining machine is generally tungsten steel cutter. After using this cutter for several times, the cutter will be worn, so there are errors in the cutter.

5、人工对刀：如果有对刀仪，在对刀方面就不会有问题。但很多小型手板厂，为了节约成本，在选择机器的时就会选择没有对刀仪，只能人工对刀，所以人员方面又有公差。为了保证手板模型的精度，在手板加工设备上面安装对刀仪，不仅能够精准对刀，而且大大提高了工作效率。

5. Manual tool setting: If there is a tool setting instrument, there will be no problem in tool setting. However, in order to save costs, many small handicraft factories will choose to have no tool setting instrument when selecting machines, and only set tools manually, so there is a tolerance in terms of personnel. In order to ensure the accuracy of the prototype, the tool setting instrument is installed on the prototype processing equipment, which can not only accurately set the tool, but also greatly improve the working efficiency.

以上便是影响手板加工精度的5个方面，各个方面的影响会导致后手板模型的精度产生差异，所以要从每个方面的加工精度下手，制作能实现佳效果的手板模型。更多相关内容就来我们网站http://m.metferro.com进行咨询了解吧！

These are the five aspects that affect the processing accuracy of the hand board. The effects of all aspects will lead to differences in the accuracy of the back hand board model. Therefore, we should start from the processing accuracy of each aspect to make a hand board model that can achieve good results. More relevant content will come to our website http://m.metferro.com Consult and understand!