With the arrival of the world's fourth industrial revolution, and the continuous development of science and technology and social production, mechanical manufacturing technology has undergone profound changes, the structure of mechanical products is more and more reasonable, and its performance, accuracy and efficiency are increasingly improved, so the production equipment of processing mechanical products has put forward high performance, high precision and high automation requirements. In order to solve the problem that ordinary machine tools can not be produced, to achieve single and small batch production, especially the automatic processing of some complex parts, CNC machining came into being.

Although, at present, China has become a processing country, precision parts processing plants all over the country. According to the data of the General Administration of Customs of China, in January and February 2023, the cumulative export volume of China's machine tools reached 2364123 units (2,364,100 units), from high-end CNC customized precision parts to ordinary standard products can achieve standardized mass production, the application of CNC technology can realize the automatic processing of parts and improve production efficiency. Especially in the automotive manufacturing, aerospace, electronic equipment manufacturing and other fields, the application of CNC technology has great potential. The application of CNC technology can realize the automatic processing of parts and improve production efficiency. Especially in the automotive manufacturing, electronic equipment manufacturing and other fields, the application of CNC technology has great potential.

CNC machining is widely used in the field of automotive parts, involving the engine, transmission, chassis, braking system, steering system and other aspects. However, no matter in any field of precision machining, achieving high precision and high speed is an important competitive means to obtain user orders.

The following are some specific applications of CNC machining in the field of automotive parts: 

Engine parts machining: CNC machining can be used to manufacture various parts of the engine such as cylinder block, crankshaft, connecting rod, valve seat, etc., which require high precision and high strength. 

1.Transmission parts processing: CNC machining can be used to manufacture various parts of the transmission system such as transmission gears, clutches, transmission shafts, etc., which require high precision and high strength. 

2.Brake parts processing: CNC machining can be used to manufacture various parts of the brake system such as brake discs, brake pads, brakes, etc., which require high precision and high quality.

3.Steering parts processing: CNC machining can be used to manufacture various parts of the steering system such as steering gear, steering rod, steering machine, etc., these parts need high precision and high strength.

With the continuous development of CNC machining technology and the expansion of application fields, whether it is automobile body design or automobile internal electronic parts processing, the application range of CNC custom machining technology in the field of automation will be more and more extensive. In the future, CNC machining technology will continue to play an important role in the automotive manufacturing field.

With the continuous development of technology, consumers have different personalized needs, customization requirements continue to improve, consumers need to customize professional spare parts according to their own needs and preferences, if this can be achieved, will greatly increase the customer's goodwill, enterprises can also continue to increase their own visibility. Therefore, CNC custom machining services also play an important role in manufacturing.

The application of CNC custom machining services in the field of automotive automation has also achieved remarkable results. Take our company as an example, we provide one-stop customized CNC production services, with advanced equipment and technical team, has provided high-quality parts processing services for many well-known automobile manufacturers, and won the favor of partners.

In short, the application of CNC custom machining services in the field of automotive automation is gradually changing the pattern of traditional manufacturing. For custom CNC production services, please choose us and we will provide you with the best quality service and the most competitive price. Let us jointly promote the innovation and development of the automobile manufacturing industry!

With the increasingly updated processing technology, CNC machining has also undergone a lot of changes. Many experts pointed out that in the future, CNC will be the mainstream processing mode. In the CNC machining process, the tool is the most important, today, we will understand the CNC tool in detail.

A tool is a tool used for cutting in mechanical manufacturing. Generalized cutting tools include both cutting tools and abrasive tools. The vast majority of knives are used for machines, but there are also hand tools. Since the tools used in mechanical manufacturing are basically used to cut metal materials, the term "tool" is generally understood as a metal cutting tool. The cutting tools used for cutting wood are called woodworking tools.

Tool classification

Cutting tools can be divided into five categories according to the form of the workpiece machined surface.

Cutting tools for processing various outer surfaces, including cutting tools for processing various outer surfaces, including turning tools, planing knives, milling cutters, outer surface broach and file, etc.

Hole processing tools, including drill, reaming drill, boring cutter, milling cutter and internal surface broach, etc.

Thread processing tools, including tap, die, automatic opening thread cutting head, thread turning tool and thread milling cutter.

Gear processing tools, including hob, gear shaper cutter, shaving cutter, bevel gear processing tool, etc.

Cutting tools, including inserted circular saw blade, band saw, bow saw, cutting tool and saw blade milling cutter, etc.

In addition, there are combination tools.

Tool structure

The structure of various tools is composed of a clamping part and a working part. The clamping part and working part of the overall structure of the tool are done on the tool body; The working part of the tool (the tooth or blade) is mounted on the tool body.

The clamping part of the tool has two kinds of holes and handles. The tool with hole relies on the inner hole set on the spindle or mandrel of the machine tool, and transmits the torsional torque with the help of the axial key or the end key, such as the cylindrical milling cutter and the sleeve face milling cutter.

The tool with the handle is usually rectangular handle, cylindrical handle and conical handle three kinds. Turning tools, planing tools, etc. are generally rectangular handles; The conical handle withstands the axial thrust with the taper and transmits the torque with the help of friction. Cylindrical shank is generally suitable for smaller twist drill, end mill and other tools, cutting with the help of the friction generated when clamping torque transfer. The shank of many tools with handles is made of low alloy steel, and the working part is made of high speed steel welded to each other.

The basic properties that the tool material should have

1. High hardness

The hardness of the tool material must be higher than the hardness of the workpiece material to be machined, which is the basic feature that the tool material should have.

2. Sufficient strength and toughness

The material of the cutting part of the tool must withstand great cutting force and impact force when cutting. The bending strength and impact toughness reflect the ability of tool material to resist brittle fracture and edge breakage.

3. High wear resistance and heat resistance

The wear resistance of tool materials refers to the ability to resist wear. The higher the hardness of the tool material, the better the wear resistance; The higher the high temperature hardness, the better the heat resistance, the tool material at high temperature resistance to plastic deformation, anti-wear ability is also stronger.

4. Good thermal conductivity

Large thermal conductivity means good thermal conductivity, and the heat capacity generated during cutting is easily transmitted out, thereby reducing the temperature of the cutting part and reducing tool wear.

5. Good technology and economy

In order to facilitate manufacturing, the tool material is required to have good machinability, including forging, welding, cutting, heat treatment, grindability and so on. Economy is one of the important indexes to evaluate and promote the application of new tool materials.

6. Resistance to bonding

Prevent the workpiece and the tool material molecules under the action of high temperature and high pressure adsorption bond.

7. Chemical stability

It means that the tool material is not easy to react chemically with the surrounding medium at high temperature.

Tool coating

Aluminum alloy indexable inserts are now coated with hard or composite layers of titanium carbide, titanium nitride, alumina by chemical vapor deposition. The physical vapor deposition method that is being developed can be used not only for aluminum alloy tools, but also for high-speed steel tools such as drills, hobs, taps and milling cutters. As a barrier that prevents chemical diffusion and heat conduction, the hard coating slows down the wear rate of the tool during cutting, and the life of the coated blade is about 1 to 3 times higher than that of the uncoated blade.

Tool selection is carried out in the human-machine interaction state of NC programming. The tool and handle should be correctly selected according to the machining capacity of the machine tool, the performance of the workpiece material, the processing procedure, the cutting amount and other relevant factors.

The general principle of tool selection: easy installation and adjustment, good rigidity, high durability and accuracy. On the premise of meeting the processing requirements, try to choose a shorter tool handle to improve the rigidity of the tool processing. When selecting the tool, the size of the tool should be adapted to the surface size of the workpiece to be machined.

1. End milling cutter is often used to process the peripheral outline of plane parts.

2. When milling the plane, carbide blade milling cutter should be selected.

3. When processing convex and grooves, choose high-speed steel end milling cutter.

4. When processing the blank surface or roughing the hole, you can choose the corn milling cutter with cemented carbide blade.

5. For the processing of some vertical surface and variable bevel contour, ball end milling cutter, ring milling cutter, conical milling cutter and disk milling cutter are often used.

6. In the processing of free-form surface, because the cutting speed of the end of the ball head tool is zero, so in order to ensure the processing accuracy, the cutting line spacing is generally very dense, so the ball head is often used in the finishing of the surface.

7, flat head tool in the surface processing quality and cutting efficiency are better than the ball head knife, therefore, as long as the premise of ensuring but cutting, whether it is rough surface machining or finishing, should be preferred to choose flat head knife.

8. In the machining center, various tools are installed on the tool library, and the tool selection and tool change are carried out at any time according to the procedure. Therefore, the standard tool handle must be used in order to make the standard tool for drilling, boring, expanding, milling and other processes quickly and accurately installed on the machine spindle or tool library. The number of tools should be reduced as far as possible; After a tool is installed, it should complete all the processing parts that it can carry out; Rough finishing tools should be used separately, even if the same size specifications of the tool; Milling before drilling; Surface finishing is carried out first, and then 2D contour finishing is carried out. Where possible, the automatic tool change function of CNC machine tools should be used as much as possible to improve production efficiency.

Problems encountered in processing aluminum and solutions when processing pure aluminum, easy to stick knife analysis and solutions:

1. Aluminum material is soft in texture and easy to stick at high temperature;

2. Aluminum is not resistant to high temperature, easy to open;

3. Related to processing cutting fluid: good oil lubrication performance; Good water-soluble cooling performance; High dry cutting cost;

4. When processing pure aluminum, the end mill dedicated to aluminum processing should be selected: positive front Angle, sharp cutting edge, large chip discharge slot, 45 degrees or 55 degrees helix Angle;

5. The material of the workpiece and the CNC tool has a greater affinity.

6. Rough front tool processing soft materials.

Recommendation: Machine tool conditions are poor to good requirements are low to high, please use high-speed steel, coated polished carbide, PCD polycrystalline diamond and single crystal diamond.

7. Low speed can be avoided by cutting fluid, high speed oil mist lubrication, the effect can be improved, aluminum alloy suitable

Due to the high temperature, high pressure, high speed, and the parts working in the corrosive fluid medium, the application of difficult to process more and more materials, the automation level of cutting processing and the processing accuracy requirements are getting higher and higher. In order to adapt to this situation, the development direction of the tool will be the development and application of new tool materials; Further develop the vapor deposition coating technology of the tool, and deposit higher hardness coating on the matrix of high toughness and high strength, so as to better solve the contradiction between hardness and strength of the tool material; Further development of indexable tool structure; Improve the manufacturing accuracy of the tool, reduce the difference in product quality, and optimize the use of the tool.How to choose CNC aluminum alloy machining tool.

With the advent of the Industry 4.0 era, CNC processing technology is also changing step by step, in addition to the pursuit of quality breakthroughs, many entrepreneurs are also pursuing automated production! Automation is a future trend in manufacturing. However, as we all know, the cost of manufacturing machine iteration is very expensive, under normal circumstances, the same series of machines do not appear the quality of the general process span will not be iterated machine. So we can avoid the heavy way to improve the production capacity and efficiency of CNC machine tools, and then take a look!

With the change of the development process environment, today's CNC machining machine tool technology has been constantly improving, today's we are already different from yesterday's we, the new era has put forward new challenges to us. What do we need to change to meet the challenge? What is needed is for us to continuously improve our perceptions, our capabilities, our methods and our actions.

The process of the internal structure of the product is closely related to the processing cost. The processing technology used by the product directly determines the production cost, and the processing efficiency and production capacity will also be affected by it.

From the perspective of product design, if the manufacturing threshold of processing technology can be fundamentally reduced, on this basis, certain processing costs can be reduced, and the processing CT time of CNC machine tools can be shortened, and the processing quality and processing quality can be improved. Efficiency can be improved. Can greatly improve the CNC machining capacity.

The life management control of the tool by the CNC system is to calculate the number of tool machining, or to determine the processing time. Therefore, when the tool life reaches the expected number of machining times or time of the system, the CNC automatically stops the action. It is assumed that when manual supervision is not in place, or when the tool is not able to stop changing in the expected situation, the CNC machining process will be affected. Therefore, tool life is a key factor affecting CNC production capacity.

Especially when the CNC machining process of a workpiece is too much, the processing amount is cumbersome, and the dimensional accuracy of the processing is relatively strict, the tools to be used will be more. At this time, the CNC tool library automatically changes the tool, and the knife action is more frequent, and the tool wear is larger, so that the manual tool change and machine adjustment are more frequent.

Therefore, tool wear is an important indicator that affects the normal production rhythm and capacity of CNC. Through technical measures to improve the process, improve the overall life of the tool, not only can save the cost of the tool, but more importantly, can reduce the stopping time of the CNC spindle, so as to improve the efficiency of CNC processing, improve the production quality and capacity.

In the process of confirming the product processing technology, it is necessary to fully consider all the functions of CNC CNC machine tools, to shorten the processing route, reduce the number of tool walking and tool changing times, so as to ensure that the processing capacity is improved.

By choosing a reasonable and appropriate cutting amount, give full play to the cutting performance of the tool, optimize the processing parameters of the CNC, ensure the high-speed machining of the spindle, reduce the CT time of parts processing, and ultimately improve the processing efficiency of the product and improve the production quality.

When writing CNC machining process, it is not only necessary to focus on the feasibility of processing, but also to consider whether the process of the processing process will have a negative effect on the processing efficiency. Effectively shorten the processing time of CNC CT and improve production capacity can be achieved by arranging a reasonable processing sequence and reducing the number of tool changes.

The development and strict implementation of production SOP is an indispensable part of CNC machining production process. Manual operation behavior should be reasonably standardized to reduce employees' negative emotions and unnecessary waste of time efficiency. Formulate incentive policies to improve the enthusiasm of technicians, so as to achieve the purpose of improving production capacity and product processing quality.

The inspection work needs to be comprehensive, such as the use of the cylinder, solenoid valve, motor and other electrical parts in the oil environment on the equipment and fixture condition, and the investigation of these parts before the operation can effectively avoid the situation that the production of CNC spindle is forced to stop, so as to improve the utilization rate of the spindle.

Machine iteration is expensive, but there are other methods we can use to do it at a very small cost in exchange for a high yield.

The high-quality management of CNC machining production should be put in the first place, and the above six points can effectively improve the production performance and capacity of the machine tool.

Modern CNC (computer numerical control) machines enable the manufacture of precision parts quickly and efficiently. CNC machines manufacture millions of parts around the world every day. All of these parts vary in size, material and purpose.

CNC machining is often used for metal parts and assemblies with complex designs and tight tolerances. Because of the precision and capability of CNC machining, it is one of the most demanding manufacturing methods.

These industries rely heavily on CNC machined parts: automotive, Aerospace & Defense, medical, construction equipment, Power & Energy, and industrial. In this article, we will share how each industry uses precision machined parts.

Automobile industry

The automotive and transportation industry is one of the largest users of CNC machined parts. Cars, trucks, vans and motorcycles all use precision metal parts. Vehicles require thousands of parts, which require high precision and durability.

CNC machining is ideal for many automotive parts because the parts need to be the same and made of hard metals such as steel and stainless steel. Many engine and transmission parts are CNC machined. Few manufacturing processes can match the precision and repeatability offered by CNC machining.

Electric vehicles play an important role in the development of CNC machining, as they require a large number of precision-machined parts.

Medical industry

Similar to the automotive industry, the medical industry requires parts with extremely tight tolerances. There is no room for error in the manufacture of life-saving equipment.

CNC machining provides the medical industry with precision parts, required materials, and fast manufacturing. CNC machines can use specific materials required by the medical industry, such as stainless steel, titanium and copper parts.

CNC machining is also an ideal choice to support crisis response. In early 2020, many CNC workshops shifted part of their work to manufacturing basic medical equipment such as parts for ventilators. CNC machines have a wide range of functions and can be easily programmed to make new parts.

Industrial equipment industry

CNC machines make parts for other manufacturing operations. The industrial sector includes packaging equipment, electronics and other general industrial equipment. Overall, the industry accounts for about 25% of CNC machined parts.

Industrial equipment often requires high-precision parts that can operate in high-stress environments. The consistency and custom machining capabilities offered by CNC machining are necessary for the industry.

Aerospace and defense industries

The aerospace industry is worth an estimated $300 billion and shows no signs of slowing down. We usually think of aerospace as = airplanes, but there are also thousands of satellites and rockets that require thousands of precision parts.

The aerospace and defense industry relies on CNC machining to manufacture complex precision parts that leave no margin for error. The tight tolerances, rapid prototyping and scalability of CNC machines are ideally suited to meet the needs of this industry.

Construction industry

The construction industry needs reliable, high-strength parts that can operate in harsh environments. CNC machine tools can process large and small metal parts needed for construction equipment.

CNC machining is the best manufacturing method for difficult metal alloys. High-strength steel alloys are commonly used to make parts for cranes, lifting equipment, bulldozers and other construction equipment. Gears, pump equipment, and high-strength fasteners are just a few examples of NC machined parts.

Energy industry

The gas, oil and energy industry is another huge market that relies on many #CNC machined components. Precision valves, bushings and sensor devices all require precision machined parts.

To keep vital energy infrastructure operating at peak efficiency, components need to fit perfectly together.

Parts used in harsh environments require high precision and high corrosion and heat resistance. Salt water and chemicals can destroy many metal parts, so the industry needs metals such as Hastelloy, which often require modern CNC machine tool cutting tools.

In general, CNC machining process plays an irreplaceable role in modern manufacturing industry, and its high precision, high efficiency and flexibility bring great development opportunities and competitive advantages to all walks of life. With the continuous progress of technology and the continuous expansion of applications, CNC machining technology will continue to play an important role in the future manufacturing industry, and make new contributions to the progress and development of human society.#Honscn #cnc