Parts requiring precision machining come in a variety of materials such as iron, stainless steel, bronze, graphite, plastics, steel and other metals. Depending on the size of the application scenario and the materials involved, a variety of precision machining tools and techniques will be used. As a result, precision machine tool operators can use any combination of drilling machines, grinders, lathes, milling machines and even industrial robots to get the job done.

Precision machining is a process that produces accurate parts with high tolerances and excellent surface quality by removing material from the workpiece. Precision machining processes can involve turning, milling, drilling, gear cutting, grinding and other processes. Heat treatment is a special process such as carburising, quenching, tempering, etc., which may be employed for special needs during precision machining. Precision machining usually requires computer numerical control or CNC programming, which allows special designs to be converted into precise shapes through multiple dimensions

Features of precision machining

Reduced waste of raw materials, the introduction of advanced precision technology reduces the waste of part materials. Although a certain level of waste is expected in engineering and manufacturing, the application of precision machining will significantly reduce waste. This significantly saves manufacturing costs, protects the environment and maximises the use of expensive materials.

Precision machining improves productivity and precision engineering requires the use of machines with automated assembly capabilities. This means that production times are greatly reduced and large orders can be accepted at a given time. Precision machining maximises the use of advanced precision technology to speed up production. Precision machining provides customers with fast turnaround deliveries and reliable service. When the production cycle is faster, it does not mean that the quality decreases. Specialist precision engineers will maintain quality throughout all machining processes to ensure a finished product of the desired size is produced.

Precision machining allows for the machining of workpieces that require a high degree of accuracy. Precision machining is the ability of machinery and technology to accurately and precisely manufacture parts to exacting specifications. The ability of precision machining refers to the level of accuracy with which a supplier can manufacture parts, objects or assemblies, whether large, complex, tiny and with high accuracy requirements. Maintaining this level of precision across a range of different object sizes and shapes is essential due to the extreme level of precision and accuracy required to manufacture many parts.

What equipment is used for precision machining

There are many pieces of equipment used for precision machining, such as CNC milling machines, CNC machining centres, CNC drilling machines, CNC grinding machines and CNC lathes. The following section will briefly describe some of these CNC milling machines, which vary in size, axis configuration, feed rates, cutting speeds, milling feed direction, and other characteristics. However, in general, CNC milling machines use a rotating spindle to remove unwanted material. They are used to cut hard metals such as steel and titanium, but can also be used for materials such as plastics and aluminium.

CNC mills are designed for repeatability and can be used for everything from prototyping to high-volume production. High-end precision CNC milling machines are often used for precision tolerance work, such as milling fine moulds. While CNC milling can provide a quick turnaround, finishing after milling creates parts with visible tool marks. It can also produce parts with some sharp edges and burrs, so additional processes may be required if edges and burrs are unacceptable for these features. Of course, the deburring tool programmed into the sequence will deburr.

Precision CNC milling centres are available with multiple axes. 3-axis CNC milling machines utilize the X, Y and Z axes for a variety of tasks. With a 4-axis CNC milling machine, the machine can rotate and move the workpiece in both vertical and horizontal axes for more continuous machining.A 5-axis CNC milling machine has three conventional axes and two additional rotary axes that allow the workpiece to rotate as the spindle head moves around the workpiece. This allows machining of all five sides of the workpiece without removing the workpiece and resetting the machine.

The article focuses on the characteristics of precision machining and what equipment is available for it. Browse through the article to learn that precision machining is a process that produces accurate parts with high tolerances and excellent surface quality by removing material from the workpiece. Precision machining involves processes such as turning, milling, drilling, gear cutting, grinding, etc. 01 What is CNC?

CNC is an acronym for Computerised Numerical Control, also known as CNC machine tools and CNC lathes.

C represents the computer, N represents the digital unit, C represents the control, that is to say, the use of computers to control the digital unit so that the machine tool to make the required instructions and processing.

Translation is: computer numerical control, commonly known as "CNC". Automated machine tools are digitally controlled by computers.

The control system is capable of logically processing a programme with control codes or other symbolic instructions, decoding them by the computer, so that the machine tool performs the prescribed actions and processes the blank material into a semi-finished part by means of a tool cutter.

In other words, as long as the computer numerical control of automated machine tools can be called CNC, including CNC car, machining centres, CNC wire cutting, CNC punch presses, CNC laser cutting machines and so on.

Many people mistakenly think that CNC is CNC machining centre, this kind of talk is not quite correct.

According to the data show that in 2021 the global CNC machine tool market size of 572.405 billion yuan, China's CNC machine tool market size of 268.7 billion yuan, an increase of 8.65% year-on-year, the market size in 2022 is about 295.7 billion yuan.

At present, domestic CNC machine tool enterprises compared with foreign leading enterprises still have technology gaps, especially in the field of high-end CNC machine tools. High-end CNC machine tools leading enterprises are mainly concentrated in Germany, Japan and the United States, the industry as a whole is highly competitive.

02 What is CNC machining?

CNC machining, also known as CNC machining, refers to machining with CNC machining tools.

CNC machining has the advantages of stable machining quality, high machining precision, high repeatability, ability to process complex surfaces, and high machining efficiency.

Aircrafts Rockets Cars Chairs Boats

These items that go up to the sky and down to the sea are manufactured with the help of CNC machining technology!

CNC CNC machining parts steps

1, analyse the parts drawing to understand the general situation of the workpiece (geometry, workpiece material, process requirements, etc.)

2, to determine the parts of the CNC machining process (processing content, processing route)

3, the necessary numerical calculations (base point, node coordinates calculation)

4, the preparation of the programme (different machines will vary, comply with the manual)

5, programme verification (enter the programme into the machine, and graphical simulation, to verify the correctness of the programming)

6, machining the workpiece (good process control can be very good to save time and improve the quality of machining)

7, workpiece acceptance and quality error analysis (the workpiece inspection, qualified into the next. Unqualified through the quality analysis to find out the causes of errors and corrective methods).

03 Is the work tired? How is the income?

In CNC workshop, generally one person controls several machines, some skilled workers can even operate 20 machines at the same time, more work and more money. Another important point is that the overtime working hours in CNC workshop are very stable, and the salary will be higher than that of the general production line.

If you are doing large parts products, the relative wage is higher, more than ten thousand is not a problem, if you do small parts, the relative wage is lower, about 6 to 8K.

CNC is not so terrible, although some positions are busy, but there is no lack of some easy positions, and management is not as strict as the assembly line.

04 Is CNC workshop harmful to the body?

CNC workshop smell is usually the smell of machine coolant, no harm to the human body, the work of the factory will also provide the appropriate protective equipment.

The odours are not poisonous but can be quite unpleasant, and in some cases there is oil and noise. However, earplugs and masks are required in most CNC workshops, and the factory will issue these supplies on time, so there is no need to worry.

However, if you have a sensitive body, you may be allergic to the odour or the oil mist, and you should apply for a job change as soon as possible!