What Factors Affect The Accuracy Of Machined Parts

For the machining process, the precision requirements of machined parts ‍ are very high. Generally speaking, the degree of good and bad equipment will also have a direct impact on the accuracy of machined parts, in general, the parts processing machinery belongs to the combination of machinery, this type of machinery on the parts of the high precision requirements, so you need to pay extra attention. Here is a look at those factors will affect the accuracy of machined parts:

1, The inner influence factors (Inner influence)

First of all, the precision of machined parts is the inner factors, refers to the machining process on the parts processed when the geometric error, as well as the operation of the internal impact caused by non-standardized. Machined parts must be combined and installed during the work process, and there is a high degree of integration between each component, if the unit is not installed during the installation, then it will lead to the accuracy of the part is affected. In addition, based on the usual work period, the existence of wear and tear, will also lead to machined parts of the components of the tiny gaps, which will also have an impact on the accuracy.

2, The impact of force factors (Stress effect)

For machined parts, during the work period, the system will usually be deformed by the force of the problem, resulting in changes in the position and shape of the system, and further make the normal and safe operation of the system is affected. The impact of force factors are reflected in two major aspects: on the one hand, the system has a strong actual operating capacity, on the other hand, the various components of the system will be subjected to multiple forces, under the influence of the force, the machining accuracy of the parts will be affected to a certain extent.

3, Thermal effect (Thermal effect)

In the machining process application process, the machined parts accuracy of thermal effect factors are mainly divided into three categories: tool thermal changes, thermal deformation of the workpiece as well as the machine tool itself and the structure of the thermal deformation, machining process on the parts have high precision requirements, thermal effect factors will make the parts accuracy is greatly affected.

The above are several factors that affect the accuracy of machined parts, for these unavoidable factors in the use or installation process, the operator needs to pay attention to the intrinsic influence, try to reduce the impact of the force factors and the impact of thermal deformation, to take effective measures to ensure that the machined parts ‍ precision.

What initiatives are more conducive to obtaining higher precision machined parts

As we all know that both mechanical assembly and automobile and aviation assembly for the quality of parts processing requirements are very high, and master the processing requirements of different structural parts is more conducive to obtaining high-precision parts. Especially those cost-effective, good quality, good machined parts is in the various assembly areas have a high popularity, and now on what initiatives more conducive to obtaining higher precision machined parts for a brief description:

1. In the shaft and hole end machining into chamfering

With the machining process on the structure of the parts more and more demanding, some machined parts is to use their own structural characteristics to obtain higher precision machined parts. For example, the end of the shaft and hole machined into chamfer, which is both to facilitate the removal of parts of the burr, but also to remove the sharp edges of the parts, so that it can be assembled with higher precision.

2. Machining the shoulder into a rounded corner for transition

According to many manufacturers to share feedback that some machined parts in the machining process in order to avoid cracks, it is necessary to reduce the internal stress to avoid excessive stress concentration. This can be done by machining the shoulder into a rounded corner for transition, which is equivalent to a part of the stress is removed through the rounded setting, so that the machined parts have higher precision.

3. Reduce the cutting allowance and reduce the machining area

Machined parts in the rough machining can be reduced by reducing the cutting allowance to improve machining accuracy. Such as the cam, pit and countersunk holes and other machining operations can be reduced by reducing the cutting allowance to improve the accuracy of machined parts, which is equivalent to reducing the machining area and the number of machining area.

According to the survey feedback the vast majority of machined parts are made of uniform dimensions, and some of the durable machined parts enjoy a high reputation in various industries. In addition to improving the machining accuracy of machined parts can be realized by machining the end of the shaft and hole into chamfer, but also by machining the shoulder into a rounded corner of the transition as well as reduce the cutting allowance and reduce the machining area.