Beginners Guide To CNC Precision Machining
With the continuous expansion of the degree of industrialization, the processing technology of CNC precision machining has gradually matured and refined.
CNC precision machining, as a way of machining, custom CNC machining, can achieve higher precision compared to other methods, and at the same time, its requirements for the machining process are relatively high.
Precision parts have become an integral part of many important industries and are no longer simple milling. In recent years, custom lathe parts are often combined with high-end technology products to realize their value and continuously promote the process of industrialization.
We all know that any product is assembled from many small parts, from small household appliances to aerospace rockets, and every small part plays an indispensable role.
Then this is the purpose of computer-aided design is to produce custom-turned parts. The manufacturer processes the parts according to the requirements of the parts, so as to produce small parts of each part.
In the process of producing these parts, it is necessary to ensure that the precision and thickness of the CNC metal parts meet the corresponding requirements.
In the process of computer-aided manufacturing, every process is very important. The input and output of the tool need to be interlocked, and the size and precision are strictly controlled. Maybe only 1 mm of error will cause the product to be scrapped and lose its value.
In terms of combination, while industrialization continues to grow and develop, the use of CNC precision parts has gradually been combined with high-end technology and other products and has continued to expand. At the same time, the requirements for the processing process are also stricter, and more emphasis is placed on product quality.
What Are The Advantages Of CNC Machining Of Precision Parts?
The biggest advantage of CNC machining is too intelligent, digitized, and automates the cad program. At the same time, compared with traditional processing methods, it can save labor and time costs.
The accuracy and quality of the CNC turning parts can also be guaranteed to the greatest extent.
Today, TDB Tech will talk about the advantages of CNC machining.
- The Machining Process is Automated Instead of Manual
The programmer will reasonably program the g codes into the CNC programming, and the operator will complete the CNC turning process of the workpiece in strict accordance with the program steps.
- Highly Inclusive and Targeted
If you need to modify the specifications of the workpiece during the workpiece processing, you only need to modify it in the program. Convenient and fast, without delaying the processing time.
- Automatic Tool Magazine
During computer-aided manufacturing in the CNC milling machine, the tools to be used are matched in advance, and the equipment can automatically complete the tool change operation during the CNC process.
- High Applicability
CNC machining is suitable for manufacturing workpieces with complex shapes and structures, and the accuracy can reach up to ±0.01mm.
- Wide Range of Applications
CNC lathe processing is suitable for aerospace parts, medical equipment, hardware parts, auto parts, metal prototypes, and other manufacturing fields.
Therefore, many R&D companies will cooperate with powerful CNC turning parts factories, and when the product is designed, the sample processing can be completed as soon as possible. It is beneficial for enterprise designers to further improve the design and speed up the process of new product development and application.
Modern CNC Machines Machining Process Characteristics Of CNC Precision Parts
CNC precision parts manufacturing have different process characteristics in each different manufacturer, which is one of the reasons for the uneven quality of parts in the market. Good process characteristics can make the product itself have many advantages. Therefore, good process characteristics can improve our production efficiency, operate well, and have a long service life of parts.
Next, YIJIN Hardware will share and discuss some process characteristics of CNC machining with you, hoping to help you.
- For example, stamping and drawing dies can be processed into parts with complex shapes and various sizes, ranging from precision parts for prototypes to precision parts for automobiles and aerospace. The strength and stiffness of cold-formed stamping parts are high.
- The stamping die process generally does not produce scraps, consumes less material, and does not require coordinated processing with other equipment, so it is a relatively time-saving and material-saving processing method, which can effectively reduce costs.
- The size and shape of the parts are guaranteed during the processing of the CNC machining center, the surface quality of the parts is high and the stability is good.
- The CNC machining tools have production speed, high efficiency, and convenient operation, which realizes mechanization and automation of precision CNC machining parts production and processing.
This is because modern CNC machines mainly rely on the programming of the numerical control system, which can greatly increase processing hours and reduce the processing cost compared with ordinary machine tools.
Basic Machining Process Of CNC Precision Parts
There must be a set of strict processing procedures and quality control procedures behind it.
- The first is a benchmark.
That is to say, the reference surface is processed first.
- Smoothing treatment.
In the final stages of the process road, the primary surfaces are subjected to finishing treatments such as grinding, honing, fine grinding, rolling, etc.
The formulation of the finishing process route can be roughly divided into two steps: formulating the finishing process specification; In the process of processing, the process route of parts processing should be drawn up first, and then the process scale, equipment, and process configuration used, as well as cutting procedures, working hours quota, etc. should be determined.
For those who can proficiently operate the CNC programming language of precision parts in a CNC lathe, the general processing technology characteristics are also very good. Good process characteristics will naturally add a lot of color to the product. Good process characteristics can make the product perfect or better. Precision parts processing is one of them.
About The Size And Accuracy Required For CNC Precision Parts Processing
For some precision parts with higher requirements, the strength of the processing manufacturer will be tested very much, and not all manufacturers can reach a level of precision.
YIJIN Hardware has nearly 20 years of experience in CNC machining. It has continuously worked hard and innovated on the road to narrowing tolerances, and has reached a tolerance of 0.01 mm in precision. It has a good ability to process all kinds of complex parts with high precision requirements. Start to get a free quote from us.
Detection Method Of CNC Machining Precision Parts
In the process of manufacturing mechanical parts, the phenomenon of failure is also normal, but it should be solved in time.
But sometimes, some faults will not be found, so they will be found later in use, so it is very important for many users to learn how to check the product when making a choice.
If you find a problem after buying it back, and some manufacturers are not responsible, then let’s take a look at the inspection methods for mechanical parts processing.
- Outer Diameter Measurement Method
When measuring the outer diameter, it is necessary to measure two parts every week and make a record. If the diameter of a workpiece is greater than 50mm, the straightness inspection of the workpiece should be carried out.
- Inner Diameter Measurement Method
When measuring the inside diameter of a part, just measure it three times a week and keep a record. For the length of the same diameter greater than 40 mm, the cylindricity should be checked, and two larger position intervals should be obtained within the direction of the length of the same diameter. Calculation of cylindricity error.
- External Thread Measurement Method
The outer diameter is measured by a spiral distance meter or a three-pin distance meter, and the small diameter is measured by a spiral distance meter (general gauge).
- Internal Thread Measurement Method
Inner diameter and outer diameter thread plug gauge (pass gauge) inspection, inner diameter-outer diameter-outer diameter-inner diameter inspection.
- Surface Roughness Inspection
Comparing and judging by the method of sample block comparison.
- Flatness Test
An adjustable support plate is used, the measuring surface of the part is facing upward, the support point is adjusted so that the heights of the three points are equal, and the measured peak and valley value is the flatness error of the plane.
Cost Of CNC Precision Machining
For CNC machining, I believe that everyone knows that there are certain differences in the quotations of different manufacturers for the same CNC machined parts, so today we will analyze how the price of CNC precision parts machining is calculated. We can take it as a reference.
For CNC parts manufactured by computer numerical control, it is first necessary to see how long it takes for the part to be processed. This part of the processing fee can be calculated as the labor hour fee, and the cost per hour can be based on the local market conditions as a reference.
Of course, in CNC machining, it is actually difficult to have a very accurate quotation and calculation process, which also makes different CNC services companies’ quotations for the same product different.
In fact, the difference in price is not unreasonable. Different precision component manufacturers have different advantages.
For the simplest example, if batch production is required, then a large factory must be selected, but if it is just proofing, then a small factory is also a good choice. As for how to choose a CNC machined components manufacturer, it is necessary to judge according to needs and experience.