Beginners Guide to CNC Precision Machining

How is the Price of Precision CNC Machining Parts Calculated?

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.

CNC precision parts manufactured by YIJIN Hardware

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 components 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.

Application and Machining Requirements of Precision CNC Parts

With the continuous expansion of the degree of industrialization, the processing technology of CNC mill parts has gradually matured and refined.

Then CNC turning, as a way of machining turned metal parts, 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.

Precision CNC Machining Parts manufactured by YIJIN Hardware

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.

CNC precision parts manufactured by YIJIN Hardware

YIJIN Hardware has nearly 20 years of experience in CNC machining and provides customers with the most professional and favorable CNC Precision Machining Services.

It has continuously accumulated experience, progress, and innovation in the mass production of precision parts, and has delivered a good result of 0.01 mm in precision.

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 to intelligentize, digitize and automate 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. It is one of the most commonly used processing methods in the manufacturing industry.

Today, YIJIN Hardware will talk about the advantages of CNC machining.

  1. 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.

  2. 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.

  3. Automatic tool magazine.

    During the 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.

  4. High applicability.

    CNC machining is suitable for manufacturing workpieces with complex shapes and structures, and the accuracy can reach up to ±0.01mm.

  5. 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.

CNC precision machining parts manufactured by YIJIN Hardware

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.

  1. 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.
  2. 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.
  3. The size and shape of the parts are guaranteed during the processing of the CNC machining center, and the surface quality of the parts is high and the stability is good.
  4. 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 the processing hours and reduce the processing cost compared with ordinary machine tools.

CNC machining parts manufactured by YIJIN Hardware

Basic Machining Process of CNC Precision Parts

Good products often have very good processing processes, from materials to finished products. There must be a set of strict processing procedures and quality control procedures behind it.

  1. The first is a benchmark.

    That is to say, the reference surface is processed first. During the processing of the part, the surface as the positioning reference should be processed first, so as to provide a precise reference for the processing of the subsequent process as soon as possible.

  2. Distinguish different processing stages.

    High-quality machined surfaces are required to distinguish the processing stages, which can generally be divided into three stages: roughing, semi-finishing and finishing. First of all, it is necessary to ensure the processing quality, facilitate the scientific use of equipment, facilitate the arrangement of heat treatment procedures, and easy to find blank defects.

  3. Face first and then the hole.

    Boxes, racks, rods, and other parts should be machined first and then holes. Therefore, the hole can be processed by plane positioning, the positional accuracy of the plane and the hole is ensured, and the processing of the plane hole is also facilitated.

  4. 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.

CNC Precision Parts manufactured by YIJIN Hardware

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 more perfect or better. Precision parts processing is one of them.

About the Size and Accuracy Required for CNC Precision Parts Processing

Precision, as a major advantage of CNC machining centers, is also the key to the gap between it and other processing methods.

Of course, behind the precision, technology, innovation, management, and operating model are inseparable. In CNC manufacturing, precision is often quantified in the form of tolerances.

The smaller the tolerance, the higher the precision, and the smaller the error of the machined parts.

Of course, in actual processing, the parameters tend to change slightly according to different situations. As far as processing parts are concerned, as long as the accuracy reaches the required tolerance range, the function and quality of the parts can be guaranteed.

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.

CNC Precision Parts manufactured by YIJIN Hardware

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.

For dimensional accuracy, it is controlled by its tolerance. The dimensional tolerance is the allowable variation in the cutting process. Similarly, the tolerance is inversely proportional to the dimensional accuracy. When the tolerance is reduced, the dimensional accuracy will be more precise.

Shape accuracy refers to the degree of conformity between the actual graphics on the surface of the processed parts and the ideal graphics, including the straightness, flatness, and cylindricity of the parts.

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.

The sharing of the size and accuracy required for CNC precision parts processing will come to an end. Welcome to pay attention to the following information, you can learn more about CNC processing knowledge, we will see you tomorrow.

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