It is important to note that the selection of the positioning reference during the machining process of a CNC machining center, as well as the arrangement of the processing sequence between surfaces of the parts, during the machining process of a CNC machining center, have a significant impact on whether or not the parts’ dimensional accuracy and mutual position accuracy can be assured. Selection of the positioning reference during the machining process on a CNC machining center has a significant impact on the quality of the finished parts that are manufactured.
The use of a fixture to install a workpiece can be justified in the same way;
however, the choice of the positioning reference will have an impact on how complex the workpiece structural design of the fixture must be in this case. A fixture that is capable of withstanding high cutting forces while also meeting precise positioning requirements is required in order to achieve this goal.
The selection of a positioning reference is therefore an important technological decision. There are a variety of options available, which is fortunate. How do we go about selecting a reference point for positioning, then, becomes the question. You should know what you’re getting yourself into by now, so here’s a quick rundown:
1. The reference that is chosen should allow for accurate positioning of the workpiece, convenient loading and unloading of the workpiece, the ability to complete the positioning and clamping of the workpiece in a short amount of time, and a simple fixture structure. 2. It is the second time that both the selection of reference dimensions by the CNC machining center and the calculation of each size of each processing part are straightforward. This results in a reduction in the number of calculation links and, as a result, a reduction in the number of calculation errors in the size chain and the number of processing parts in the size chain.
Make certain that various processing operations are completed with the greatest possible precision. When determining the specific positioning reference of the parts, it is recommended that you follow the following principles:
It is necessary that there is some geometric relationship between the origin of the workpiece coordinate system, also known as the programming zero point, and the positioning reference of the part in order for them to work together in order for them to work together. This relationship does not have to be the same in every case. It is primarily motivated by a desire to simplify the process of programming and measuring the workpiece in this case that the origin of the workpiece coordinate system is chosen. For parts that require high levels of dimensional accuracy, the accuracy with which the positioning reference can measure the origin of the CNC machining center (more details go throung CNClathing.com) coordinates is critical when determining the positioning reference for the part to be machined. This is especially true when it comes to parts that require extremely high levels of dimensional precision.
CNC machining center
You should select the positioning reference on the CNC machining center after the processing reference and the processing of each station have been completed on the CNC machining center in order to achieve the best results on the CNC machining center. Selecting the positioning reference only after the processing reference and the processing for each station on the CNC machining center has been completed is recommended if you want to ensure that the CNC machining center can complete as much of the processing content as possible. So it’s important to consider the positioning method that will allow the user to finish processing each surface in the shortest amount of time possible. Consider the box positioning method with one side and two cuts. This method, which is preferred because it allows the tool to process other surfaces while still maintaining its structural integrity, is advantageous.
It will be beneficial if a concerted effort is made to use the design reference on the part as a positional reference during the manufacturing process. The type of rough reference that should be used to process each surface of the fine reference when roughing must be determined in order to ensure that the accuracy relationship between surfaces processed by each station can be maintained with relative ease.
CNC machining center.
Difficult alignment problems in CNC machining center parts are defined as situations where the positioning reference and design reference are difficult to align. A thorough examination of the assembly drawings should be carried out in order to determine what design function the design reference of the part performs, and this is known as a difficult alignment problem. By utilizing the dimensional chain, it is possible to specify the geometric tolerance range between the positioning reference and the design reference, which aids in maintaining processing accuracy throughout the manufacturing process.
It is possible that on the CNC machining center, it will not be possible to complete both the position processing and the design reference at the same time; however, you should make every effort to align the positioning reference and the design reference as closely as possible. Please keep in mind that, following the use of this reference, all of the critical precision areas can be processed in a single clamping operation following the use of this reference.