The organic connection between ordinary machine tools and CNC machine tools

The machining process of CNC machine tools for parts is carried out in strict accordance with the parameters and actions specified in the processing procedures. It is a high-efficiency automatic or semi-automatic machine tool, which has the following obvious characteristics compared with ordinary machine tools:

1. It is suitable for the processing of complex special-shaped parts.

CNC machine tools can complete the processing of complex parts that are difficult to complete or cannot be processed by ordinary machine tools, so they are widely used in aerospace, shipbuilding, mold and other processing industries.

2. High processing accuracy.

3. Stable and reliable processing.

Realize computer control, eliminate human error, good processing consistency of parts, stable and reliable quality.

4. High flexibility.

When the processing object changes, it is generally only necessary to change the CNC program, which reflects good adaptability and can greatly save production preparation time. On the basis of CNC machine tools, it can form an automated manufacturing system with higher flexibility - FMS.

5. High productivity.

The CNC machine tool itself has high precision and rigidity, and can choose a favorable processing amount, and the productivity is high, generally 3 5 times that of ordinary machine tools, and the production efficiency can be increased by more than ten times or even dozens of times for the processing of some complex parts.

6. Good working conditions.

The machine tool has a high degree of automation, the labor intensity of the operator is greatly reduced, and the working environment is better.

7. It is conducive to management modernization.

The use of CNC machine tools is conducive to the development of computer control and management production, and creates conditions for the automation of the production process.

8. The investment is large and the use cost is high.

9. The production preparation is complex.

Due to the program control of the whole machining process, the preliminary preparation of CNC machining is more complicated, including process determination, programming, etc.

10. Difficult maintenance.

CNC machine tools are typical mechatronics products, with high technical content and high technical requirements for maintenance personnel.

Second, the scope of application of CNC machine tools.

Due to the above characteristics of CNC machine tools, the parts suitable for CNC machining are:

1. Parts that are produced in small batches and repeatedly repeatedly;

2. Parts with complex geometric shapes;

3. Processing of valuable parts;

4. Parts that need to be inspected;

5. Trial parts.

The above parts are processed by CNC in order to maximize the advantages of CNC machining.

The control box and everything are the same, it's just an extra set of programs.

It's mostly the same, just with a few more features.

First there is ordinary, then there is numerical control.

CNC machine tool processing speed is fast, the processing accuracy is unified, only the stool should be adjusted by the debugger, the operator's skill requirements are not high, and the lack of travel points is required in batches; The machining accuracy of ordinary lathes is not uniform, and the operators need to have high skill requirements for dismantling wax liquid, but the requirements for batch size are not high.

1. It can greatly improve the high productivity of Zheng Xiang. After the workpiece clamping is completed, enter the prepared processing program, the machine tool will automatically complete the machining process, and when the processed parts change, generally only need to change the data program, so the processing time is greatly shortened, so that the productivity can be increased several times more than that of the spectrum machine tool.

2. It has high processing accuracy and product quality is very stable. Due to the automatic processing according to the program, the machining accuracy can also be corrected and compensated by the software, so the higher machining accuracy can be obtained, and almost all the high, precise and cutting-edge products in the enterprises are processed and manufactured by CNC machine tools.

3. The high degree of automation reduces the labor intensity and dilutes the difference between physical labor and mental labor to a large extent. The work of CNC machine tool operators has a high scientific and technological content, and the quality of the operators is higher, and the technical requirements for the maintenance personnel are higher.

The difference between CNC machine tool processing and ordinary machine tool processing is: different processing accuracy, different estimates, and different participation.

First, the processing accuracy is different.

1. CNC machine tool processing: the machining accuracy of CNC machine tool processing is high, and the machining accuracy of parts is guaranteed by the CNC machine's own bed, which eliminates the human error of the operator.

2. Ordinary machine tool processing: the machining accuracy of ordinary machine tool processing is low, and the machining accuracy of parts needs to be artificially determined by the operator, and there are errors.

Second, the estimates are different.

1. CNC machine tool processing: using CNC machine tools to process parts, the processing time of parts can be accurately estimated in advance, and the quality of processed products is stable.

2. Ordinary machine tool processing: the processing time of the parts cannot be accurately estimated in advance when ordinary machine tools are used to process parts, and the quality of the processed products is unstable.

3. Participation is different.

1. CNC machine tool processing: In the process of CNC machine tool processing, the operator does not participate in the operation, and the computer can be automatically programmed for complex parts, which accelerates the production speed.

2. Ordinary machine tool processing: In the process of ordinary machine tool processing, the operator needs to participate in the operation, and the production speed of complex parts is slow.

Compared with ordinary machine tools, CNC machine tools have the advantages of fast speed and high precision, and are suitable for large batches, high precision requirements, and complex workpiece sizes. After the CNC lathe program is set, the machine tool can automatically feed, change and retract, which saves time and manpower, and improves efficiency.

You can find any CNC book for this.

High efficiency, high precision, high precision.

High flexibility and improve labor intensity.

It is conducive to the modernization of production management.

The processing quality is stable and reliable.

The operation and monitoring of the CNC machine tool are all done in this CNC unit, which is the brain of the CNC machine. Compared with ordinary machine tools, CNC machine tools have the following characteristics:

High machining accuracy and stable processing quality;

It can carry out multi-coordinate linkage and process parts with complex shapes;

When the processed parts are changed, generally only need to change the CNC program, which can save production preparation time;

The machine tool itself has high precision and rigidity, and can choose a favorable processing amount, and the productivity is high (generally 3 5 times that of ordinary machine tools);

The machine tool has a high degree of automation, which can reduce labor intensity;

The quality requirements for operators are higher, and the technical requirements for maintenance personnel are higher.

CNC machine tools are generally composed of the following parts:

The main machine, which is the subject of CNC machine tools, includes mechanical components such as machine body, column, spindle, feed mechanism, etc. He is a mechanical component used to complete various cutting operations.

The numerical control device is the core of the CNC machine tool, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and the corresponding software, which is used to input the digital part program, and complete the storage of input information, the transformation of data, the interpolation operation and the realization of various control functions.

The drive device is the driving component of the actuator of the CNC machine tool, including the spindle drive unit, the feed unit, the spindle motor and the feed motor. He implements the spindle and feed drive by means of an electrical or electro-hydraulic servo system under the control of a numerical control unit. When several feeds are linked, positioning, straight lines, plane curves and spatial curves can be processed.

Auxiliary devices, some necessary supporting parts of the index control machine tool, are used to ensure the operation of the CNC machine tool, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, chip removal devices, exchange tables, CNC turntables and CNC indexing heads, as well as tools and monitoring and testing devices.

Programming and other ancillary equipment can be used to program and store parts outside the machine.

1. The transmission mode of CNC machine tools is different, and the spindle box of ordinary machine tools often adopts gear transmission, and the spindle and the feed system are also gear transmission. The spindle box of CNC machine tools rarely adopts gear transmission, and the mechanical transmission mode is not used between the spindle and the feed system.

2. Due to the different transmission methods, CNC machine tools can use higher speeds. Since there is no gear transmission, the CNC machine runs more smoothly.

3. The transmission mode of the feed system is also different. Ordinary machine tools use trapezoidal thread transmission, the precision is low, and the speed can not be too high. CNC machine tools use ball screws, which have high precision and fast moving speed.

4. There is a big difference in the mode of operation. Ordinary machine tools are manually operated, and each feed is manually calculated and manually controlled. CNC machine tools use CNC programs to control spindle rotation, tool movement, tool change, coolant on and off, and so on.

5. CNC machine tools are more expensive than ordinary machine tools, and CNC machine tools with high precision must be installed in air-conditioned rooms.

CNC machine tools. The main advantages of CNC machines are a significant reduction in lead time, i.e. the time required to set up the machine for preparation, a significant reduction in non-machining time by combining automatic tool change, a reduction in the number of specialized jigs and fixtures required to machine parts, and the elimination or drastic reduction of the time spent on trial cutting to obtain the required dimensions. Due to the flexibility of CNC machines, the machine utilization rate is high.

This equipment is of great value for the production of prototypes and small batches of parts. Therefore, CNC machines can produce 1, 10 or 10000 parts precisely. If required, the CNC machine can run 24 hours a day, all year round.

Ordinary machine tools. Ordinary machine tools are cheaper as a whole, and they are more cost-effective in terms of production costs. The main advantage of ordinary machine tools is experience, and experienced operators who have been trained by ordinary machine tools will be better than novices using CNC in terms of processing efficiency.

If the operator is not familiar with the operation of the setup, he can first practice slowly with ordinary machine tool processing, which does not need to think too much about the system and is easy to operate. Of course, being familiar with the ordinary machine tool Hail Oak will be of great help to you in operating CNC machines, and CNC machines will also bring you higher efficiency, versatility and profits.

It takes a lot of skill to make multiple parts that are exactly the same with a common machine. In some cases, a slight change is acceptable and can even be part of the charm of handmade parts. But for other uses, exact copies are required, and creating copies manually with a common machine tool can be difficult and time-consuming.

This problem can be solved by using a CNC machine tool next to the source width. For the exact same part, the machine follows exactly the same instructions and respects the same cutting path every time.

What are the different requirements for mechanical systems for CNC machine tools with different precisions?

Hello, CNC machine tools with different precision have very different requirements for mechanical systems, and they are mainly manifested in the following aspects: 1Structural rigidity of the machine tool:

High-precision CNC machine tools need a more solid and stable machine tool structure, which can ensure that the machine tool is not easy to deform, so as to improve the accuracy and stability of processing. 2.Rail and slider quality:

High-precision CNC machine tools require more precise, wear-resistant guide rails and slides to ensure smooth movement, high precision, and longer life. 3.Spindle system:

The spindle system of high-precision CNC machine tools needs to have high rigidity and stability to meet the accuracy requirements of high-speed operation. 4.Control system:

High-precision CNC machine tools need to be equipped with a more sensitive and reliable control system to ensure control accuracy and response speed. In short, CNC machine tools with different accuracy levels have different requirements for mechanical systems, and it is necessary to choose a suitable machine tool configuration according to the actual use needs. At the same time, in order to ensure the normal and efficient operation of the machine tool, it is necessary to pay attention to the regular maintenance and maintenance of the machine tool to prolong the service life of the machine tool.

Summary. CNC machine tools with different precisions, the requirements for mechanical systems have different compositions, and the CNC machine tool servo system includes a feed servo system and a spindle servo system. The servo system of CNC machine tool is the connection link between the CNC system and the mechanical transmission parts of the machine tool, and is an important part of the CNC machine tool.

The servo system is an automatic control system with the position of the moving parts of the machine tool as the control quantity, which accurately transforms the displacement (including linear displacement and angular displacement) of the moving parts of the machine tool according to the position instructions generated by the interpolation operation of the numerical control system, which directly reflects the performance of the machine tool coordinate axis tracking motion instructions and positioning. The servo system in general refers to the feed servo system.

What are the different requirements for mechanical systems for CNC machine tools with different precisions?

CNC machine tools with different precisions, the requirements for mechanical systems have different compositions, and the CNC machine tool servo system includes a feed servo system and a spindle servo system. The servo system of CNC chaotic hall machine tool is the connection link between the CNC system and the mechanical transmission parts of the machine tool, and is an important part of the CNC machine tool. The servo system is an automatic control system with the position of the moving parts of the machine tool as the control quantity, which is accurately transformed into the displacement of the moving parts of the machine tool (including linear displacement and angular displacement) according to the position instructions of the interpolation operation of the numerical control system, which directly reflects the coarse energy of the machine tool coordinate axis tracking motion instruction and positioning.

The servo system in general refers to the feed servo system.

The characteristics of high speed, high efficiency and safety and reliability are in the update of manufacturing technology and equipment, and CNC machine tools are rapidly gaining popularity in enterprises. CNC machine tool is equipped with a program control system, the basic structure of the machine tool is the same as that of ordinary machine tools, the difference is that the gear speed change is simplified due to the use of speed regulating motor to judge hail, CNC vertical lathe removes the tool holder slide plate, and increases the anti-backlash mechanism.