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First of all, we have to understand the function of the engraving machine and its performance, because the motor used in the engraving head of the engraving machine generally does not belong to the scope of the warranty, but the motor of the engraving machine works continuously for a long time, so in order to make the engraving machine work for a long time, we should pay more attention to the quality of the engraving head motor.
Secondly, it is the adjustable range of the speed of the engraving head motor, if the adjustable range of speed is small or the speed is not adjustable, it means that the scalability of this machine is limited.
Again, the screw rod and guide rail are also very important in the engraving machine, and a good screw rod and guide rail can improve the accuracy and life of the machine.
Finally, we should pay attention to the function of the engraving machine, because the motor of the engraving machine has the difference between high power and small power, most of the small power engraving machine is only suitable for small processing, and only the high-power engraving machine can carry out fine processing and the production of signs.
In practical applications, there are two categories of laser engraving and mechanical engraving, and there is also a distinction between high power and low power in these two categories. It is recommended that you go to Shandong Shenhua CNC equipment **** to see, they are professional, you can find a lot of useful information there, here I provide a ** to you, is my account number, you play ** to understand it in detail.
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Gears, belts, couplings, screws, ball nuts.
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1.PCB engraving machine about blank circuit board blank circuit board is pasted on the insulating substrate covered with a layer of conductive copper. From the basic principle, the process of making a circuit board is to use the principle of milling to mill off the excess and unnecessary parts of the circuit board.
This process is similar to traditional engraving, the difference is that the traditional engraving process uses manual work, while this machine uses the principle of numerical control to let the machine complete it automatically.
2.Computer sculpted paths.
To complete the production of a circuit board, the first step is to know which parts to keep, which parts to mill, and what route to let the tool move to achieve our purpose. In this system, we use the high-speed computing performance of personal computers to obtain relevant information from the PCB file of Protel, and obtain the route of the movement of the spindle cutter head through the conversion of the algorithm, which is called the computer engraving path.
3.Instruction Transmission.
The control software obtains the circuit board processing information from the PCB file, and automatically converts and decomposes it into a single action command that can be accepted by the circuit board production, and the collection of these action instructions forms the processing path of the machine PCB engraving machine. When receiving a user command, such as the user presses"Engraving"button, the control software will transmit the processing path to the circuit board making machine one by one through the serial communication port. Each time the circuit board making machine completes an action instruction, it reports the instruction completion signal to the computer.
After all the work is done, the control software sends a stop message to the machine, and the machine stops working.
According to the instructions transmitted by the computer, the first processor of the circuit board making machine controls the speed and direction of the three stepper motors according to the principle of motion control, and sends instructions to the computer to complete the instructions.
4.Combined motion control.
In this machine, three independent linear motion guides are installed perpendicular to each other. The Y-axis pulley drives the working platform to move forward and backward. The X-axis block drives the Z-rail and the spindle motor installed on the Z-rail to move left and right.
The Z-axis PCB engraving machine drives the spindle motor to move up and down. Under the coordinated control of the CPU, the three-axis makes the spindle drive the high-speed rotating tool to move in three-dimensional space relative to the workpiece, so as to process the workpiece (circuit board) into a finished product that meets the user's requirements.
For example, when the z-axis is stationary and the tip is slightly lower than the surface of the board, the y-axis is stationary and the x-axis is moving. At this time, the main tool will mill a straight line in the X direction on the ** road plate, and the width is equivalent to the width of the tool tip. The X-axis is stationary, when the Y-axis moves, the main cutter will carve a straight line in the Y direction, when X, Y move at the same time and the speed is the same, the cutter of the engraving machine will carve a 45-degree oblique line on the road plate.
Control x and y are respectively at different movement speeds, can carve straight lines at different angles on the plane, control the movement distance, and carve different shapes on the plane through various combinations.
When the Z-axis is stationary and the tip of the tool is higher than the surface of the circuit board, the tool PCB engraving machine will move to the point that needs to be engraved through the movement of X and Y.
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The CNC engraving machine is mainly composed of four basic parts: engraving machine tool, electric control cabinet, control computer and engraving control software.
The principle and composition of CNC engraving machine: CNC engraving machine (woodworking engraving machine, stone engraving machine, etc.) is composed of three parts: computer, engraving machine controller and engraving machine body.
Its working principle is to carry out pattern design and typesetting through the special engraving software configured in the computer, and the information of design and typesetting is transmitted to the engraving machine controller through the computer, and then the controller converts these information into pulse signals that can drive the stepper motor or servo motor, and controls the engraving machine body on the X, Y, Z three-axis engraving and knife positioning.
At the same time, the controller starts the inverter, drives the engraving head of the spindle motor to rotate at high speed, and the processing material fixed on the host workbench is cut, drilled and milled, and various plane or three-dimensional relief graphics and text designed in the computer can be carved, so as to realize the automatic operation of engraving, and can be matched with different special configuration tools according to different processing materials and process requirements.
CNC engraving machines include woodworking engraving machines, stone engraving machines, advertising engraving machines, glass engraving machines, laser engraving machines, plasma engraving machines, and laser cutting machines.
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Engraving machine experts on the gear transmission mode of woodworking engraving machine introduction: in order to meet the needs of customers, improve quality and processing efficiency, at present, Jufeng CNC woodworking engraving machine all use rack transmission, so what is gear transmission? The following Jinan Jufeng carving machine experts will give you a brief introduction:
A gear is a mechanical part that relies on continuously meshing teeth to transmit motion and power. 1.Experts of Jufeng engraving machine believe that the gear transmission is a transmission mode that transmits movement and power through a pair of gears mounted on the driving shaft and the driven shaft respectively, and the meshing of the two gear teeth is used to transmit movement and power.
2.Jufeng engraving machine experts believe that there are many classification methods for gears and gear transmission, and there are different classification standards, which can be classified according to the tooth profile curve of the gear, the shape of the gear, the relative position between the two gear shafts and the external structure of the gear transmission. 3.
Experts of Jufeng engraving machine believe that according to the tooth profile curve of the gear, it can be divided into involute gear, arc gear and cycloid gear. 4.Jufeng engraving machine experts believe that according to its shape, it can be divided into cylindrical gears, bevel gears, non-circular gears, racks and worm worm gears.
5.Experts of Jufeng engraving machine believe that according to the shape of its tooth line, it can be divided into spur gears, helical gears, and curved (such as hypoid) gears of herringbone gears. 6.
Jufeng engraving machine experts believe that according to the working conditions of the gear special device, it can be divided into three categories: closed, open and semi-open. 7.In addition, the experts of the Jufeng engraving machine believe that the gears can be further classified according to the relative position of the two gear axes.
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The main accessories and functions of the engraving machine help you understand the main standards of the engraving machine, as well as the structure of the engraving machine.
There are two kinds of engraving machine body, seamless welding type and cast iron bed, because there are many drawbacks of cast iron bed at present, it has not been widely used; At present, the bed structure mainly includes table mobile type, gantry mobile type, Italian model structure, and only Payson brand stone engraving machine adopts this structure. A good engraving machine structure can be the stable operation of the engraving machine, crack Xiang to improve the processing accuracy, so that the machine use effect is more superior, will be less stone engraving tool loss, to obtain a higher running speed.
The drive system comprises a driver and a drive motor, provides the driving force of the motion system of the engraving machine, and is a relatively important accessory in the engraving machine, and there are mainly two kinds of servo drive system and stepper drive system at present. The stepper drive system is used by each manufacturer, including the collocation is different, so the quality is also uneven, the servo system is mainly used in some foreign brands, and the domestic servo system is not particularly mature.
The control card is not big or small, and the mainstream market is using Weihong control system (three-axis), the new generation of control system and ingots control system (multi-axis), but there are also many cracked versions of the control system, the stability is slightly worse, and the genuine version is very different. Some manufacturers have also launched their own control systems, and the stability is also uneven.
At present, the commonly used inverters in China are Fuling, Best, Rituo inverter, Delta inverter and so on.
The transmission system is mainly composed of screw rod or rack and compass or square rail, the screw rod is currently mainly used for the Z-axis, that is, the shaft that controls the upper and lower heads, and some low-quality machines are also using the silk jujube rod on the XY axis, due to the slow transmission of the screw rod, the power is small (commonly used) stone engraving machine and woodworking engraving machine have been rarely used, and some high-precision screw rods are expensive, so the amount is very small now. Racks are divided into standard racks and non-standard racks, as well as many process parameters, and ordinary standard racks can meet market demand in terms of accuracy and speed.
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The engraving machine spindle is a kind of electric spindle that can be processed at high speed, which is widely used in some small and medium-sized engraving machine equipment, mainly used for high-speed engraving, drilling and milling, punching, etc., involving a wide range of industries.
Engraving machine spindle is a relatively accurate name in this industry, because of the difference in place, so may be disturbed by the name is not the same, some places are referred to as high-speed spindle, some places are referred to as engraving machine spindle, some places are called wide bridge engraving electromechanical spindle and so on are actually the same.
Computer control: It is to install the control card on the PCI slot of the computer motherboard, and install the software driver on the computer to control the walking of the XYZ axis of the engraving machine, as well as the rotation of the spindle motor, you can preview the processing effect, you can see the processing track at any time, and if the program loading error can be corrected in time. >>>More
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If it is caused by a loss of step, it does not matter if it is not affected during the carving. Generally speaking, it has nothing to do with your spindle speed, if the frequency of jitter is high, you need to do some inspection and maintenance, generally cleaning the machine, the maintenance of the guide rail, checking the line, fixing screws, etc. - Luoyang Guan Lin. >>>More
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