How do we achieve high efficiency and quality in CNC precision parts processing?

CNC precision parts processing, also known as CNC precision parts processing, refers to machining performed using CNC machining tools. Because CNC machining is controlled by computers after programming, CNC machining has the advantages of stable machining quality, high machining accuracy, high repeatability, the ability to process complex surfaces, and high machining efficiency. In the actual processing process, human factors and operational experience will greatly affect the final processing quality. Next, let me explain how we achieve high efficiency and quality in CNC precision machining?

1、 Dividing CNC machining processes

1） The centralized tool sorting method uses the same tool to CNC machine all the parts that can be completed on the part.

2）By using the sorting method of processing parts, the processing parts can be divided into several parts according to their structural characteristics.

3）The rough and fine CNC machining sequencing method requires the separation of processes for both rough and fine machining.

2、 Principles to follow in the arrangement of CNC machining sequence

1） The CNC machining of the previous process should not affect the positioning and clamping of the next process.

2） First, proceed with the internal cavity machining process, and then proceed with the external machining process.

3）It is best to connect CNC machining processes with the same positioning, clamping method, or the same tool

4）For multiple processes carried out in the same installation, the process with minimal damage to the rigidity of the workpiece should be arranged first.

3、 The aspects to be noted in determining the clamping method of workpieces

1））Strive for consistency in design, process, and programming calculations.

2）Try to achieve CNC machining of all the surfaces to be machined after a single positioning.

3） Avoid using manual adjustment plans that occupy the machine.

4） The fixture should be open and its positioning and clamping mechanism should not affect the tool path in CNC machining (such as collision). When encountering such situations, it can be clamped using pliers or adding bottom plate screws.

4、 Determine the tool alignment point and determine the relationship between the workpiece coordinate system and the programming coordinate system

Note that the tool alignment point must be a reference position or a precision machined part. During machining, the workpiece coordinate system and programming coordinate system are consistent.

5、 Monitoring and adjusting during CNC machining process

In the automatic machining process, the operator should monitor the cutting process to prevent abnormal cutting from causing quality problems and other accidents of the workpiece.

6、 Reasonable selection of machining tools

1）Non regrinding hard alloy end mills or end mills should be selected for flat milling

2） End mills and end mills with carbide inserts are mainly used for machining protrusions, grooves, and box surfaces.

• Ball cutters and round cutters (also known as round nose cutters) are commonly used for machining curved surfaces and variable angle contour shapes. And ball cutters are mostly used for semi precision machining and precision machining. Round cutters with hard alloy inserts are often used for rough cutting.

7、 Establishment of processing program sheet

1）The processing program sheet is a set of regulations that operators need to follow and execute, which is a specific description of the processing program.

2）In the machining program sheet, it should include: drawing and programming file names, workpiece names, clamping sketches, program names, tools used in each program, maximum cutting depth, machining properties (such as rough machining or precision machining), theoretical machining time, etc.

8、 Preparation before CNC programming

Before programming, it is necessary to understand: 1. Workpiece clamping method; 2. Size of workpiece blanks 3. Material of workpiece 4. Tools in stock

It is through the layer by layer quality control of CNC precision parts processing in the production process, and the professional allocation and application of our production equipment that we make our precision parts efficient and of high quality, which has won the satisfaction and appreciation of our customers.