The positioning data is the point, line and surface used to determine the position of the surface of the treated part during the treatment of the part. Its selection is a very important question in equipment processing technology. It will not only affect the position, size and precision of the position. The room, but also it will also have a significant impact on the layout and quality of processing of the entire process.
It is precisely because of the importance of positioning data in the operating process of the machining center that it must be carefully selected and effectively follow the principles of practical loading and unloading of the parts, of simple dimensional calculations and guaranteed machining precision. Some of the selection skills. Also demand that the operator skillfully master.
1. Try to choose the part design reference as a positioning reference.
The design base refers to the base used in the design drawing. The choice of the design base as a positioning basis not only avoids positioning errors, but also guarantees the precision of part processing, eliminates the need for repeated compilation and improves treatment. efficiency.
Second, when it is impossible to complete the positioning data and design data at the same time, try to overlap.
If the equipment cannot perform processing operations, including positioning data and design data at the same time, you can try to choose a reference point that coincides with both and meet the requirements to finish The treatment of all key parts in one tightening to avoid machining parts. Caused by several non -important dimensional damage.
Third, try choosing a reference point capable of performing several treatment tasks.
When selecting the reference point, fully take into account the positioning method of each room processing surface. Positioning can complement several treatment content as much as possible, improve treatment efficiency and reduce treatment costs.
Fourth, there is a certain geometric relationship between the origin of the coordinate system of the part and the positioning data.
The main consideration when defining the origin of the coordinate system of the part, that is to say “the origin of the programming”, is to facilitate programming and measurement, so that the data of positioning does not need to coincide completely with it. However, in order to complete the high level. Precision treatment requirements, contact details must always be taken into account when determining the positioning data. If the origin can be precisely measured using positioning data.
In the process of treatment of parts, whether it is approximate data at the beginning or a fine data during the process, stability and reliability of positioning data must be ensured at the same time, the simple structure the assembly and convenience of. The loading and unloading of the part must be taken into account, in order to better accomplish the treatment tasks.
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