External structure of CNC cutting machine and transmission mode of CNC cutting machine

CNC cutting machine are widely used in the industry. In terms of working principle, CNC cutting machines have a higher degree of automation than hand-held cutting and copying cutting, and the processing production efficiency is also improved a lot. So what are the structures of the CNC cutting machine? I believe that those who use the CNC cutting machine are wondering. Next, I will introduce to you the external structure of the CNC cutting machine, as well as the transmission mode and characteristics of the CNC cutting machine.

1. External structure of CNC cutting machine

1. The external structure of the CNC cutting machine generally includes the frame, the frame and the cutting torch, the longitudinal drive gearbox, the lateral drive gearbox, the cutting torch lifting device, the cutting torch clamping mechanism, etc., but the installation is very important.

2. The frame includes beams, main end beams, auxiliary end beams, longitudinal gearboxes, etc. The large frame is an integral part and can only be hoisted as a whole. When hoisting, it is necessary to ensure the safety and reliability of the hoisting. Therefore, before hoisting, check whether the lifting tools such as the hoisting beam are in good condition, and avoid the bending and torsional deformation of the large frame during hoisting.

3. One side of the roller for side guide is fixed, and the other side is completely adjustable. In order to make the large frame of the CNC cutting machine fall on the guide rail easily, first loosen the disc spring to maximize the distance between the fixed roller and the fixed roller.

4. Open the outer casing of the longitudinal gearbox, release the screws and springs used to compress the gearbox, swing the gearbox to a certain angle, and then use a solid block such as a wooden block to prevent it from rotating, so that it can be installed during installation. Effectively avoid the collision between the gear and the rail rack.

5. When the large frame is lifted by the hoisting tool, the surface of the roller should be scrubbed with cleaning agent. After scrubbing, it should be slowly lowered and placed on the longitudinal guide rail. Instructed by a special person in the middle, when approaching the guide rail, it should be moved slightly, and the side with the side guide roller should be dropped first. Do not damage the rail surface.

6. After the big frame is installed, check the contact between the front and rear guide wheels of the main end beam and the guide rails, and press the disc spring to make the lateral guide wheels of the main end beam have good contact with the guide rails to ensure that the frame is in good condition. guide.

Second, the transmission mode and characteristics of CNC cutting machine

1. The most commonly used transmission modes of CNC cutting machines are: belt drive, gear drive and ball screw drive. Each of the three types of transmission has its application and characteristics.

The belt drive is the continuous rotation of the belt through the continuous movement, which transmits the force from one transmission wheel to the other. The belt drive has the characteristics of small shrinkage, anti-deformation, fast speed, small negative gravity, many occlusal surfaces of internal teeth, and wide transmission width.

But belt drives also have a disadvantage. Because belts are generally made of rubber, long-term use will cause aging problems, and its transmission performance will also decrease. The CNC cutting machine uses a belt drive, which should be checked regularly. Once it is aging, it should be replaced immediately, otherwise the cutting accuracy will be reduced.

2. Rack drive is a transmission method that uses gear teeth to mesh with each other to transmit power to drive equipment to run. Rack drive, like belt drive, has the characteristics of shrinkage resistance and deformation resistance. Moreover, with different racks, the width of the transmission sticker can be wider and the occlusal surface of the internal teeth can be more.

In the process of long-term processing and use, its control transmission accuracy is more stable than that of belt transmission, and it is also suitable for rapid cutting and processing, and has a long service life. Therefore, rack transmission is mostly used in industrial-grade CNC cutting machines.

3. The function of ball screw drive is to convert rotary motion into linear motion, or convert linear motion into rotary motion. It is composed of screw, nut and ball. It has the characteristics of high precision, reversibility and high efficiency, and the ball screw is extended from the ball screw.

It converts the sliding action of the bearing into a rolling action, and the frictional resistance becomes smaller, so it is widely used in various industrial equipment and precision instruments.

4. Ball screw drive is a transmission method with the highest precision in mechanical transmission. It is now mainly used in high-precision CNC machine such as CNC laser cutting machines and CNC machine tools. But it is rarely applied to CNC plasma cutting,

Because the precision required for plasma cutting is not as high as that of laser cutting or CNC machine tools, the use of ball screw transmission is of little significance, and when CNC machine tools and laser cutting, in order to achieve high precision, corresponding drive motors and reducers are generally equipped. .