circuit board engraving machine , also known as pcb engraving machine, engraving machine circuit boards , circuit board engraving machine . I.e. direct mechanical carving engraving circuit patterns , making the circuit board of the device.
Circuit board production is electronic product development process is the most critical aspect of the design and production must be tailored according to different products . With respect to the etching process for the production of circuit boards to take in terms of circuit board factories , board engraving machine provides a quick method of system board , making the circuit for the laboratory to produce small quantities of electronic circuits, and development of products provides a great convenience.
Circuit board engraving machine invention dates back to the seventies of last century , in 1975 the German engineer Juergen Seebach successfully invented a mechanical method engraving circuit technology , and applied for a given depth of mechanical milling circuit board world patent .
In 1976, a German company introduced the world’s first rapid prototyping circuit board production system, namely the first circuit board engraving machine in the true sense . Since then, mechanical engraving technology circuit board production in the world gradually began to develop popular.
For nearly half a century, circuit board production industry, from small to large, from lower to higher continuous development , especially in the 1980s and the rise of the development of information appliances industry in the 1990s , which greatly promoted the development of the entire circuit board industry . Circuit board production increasing miniaturization , diversification and development of fine materials . Direction in order to meet the development needs of the market and high-end , board engraving machine also by the mechanical method of copying milling circuit directly to the laser engraving circuit development. Late 1990s , Laser Direct Structuring circuit technology matures, and contributed to the world’s first laser engraving circuit devices. Produced by laser stereotype machine circuit , which repeat accuracy of up to + /-0.08mil. Great to meet the production needs of fine circuit.
Currently , board engraving machine is still the leader in the production of standard its founders . There are a lot of relatively mature domestic mechanical engraving machine circuit board production factory in recent years, making China the rise of manufacturing electronic products to become the world’s largest producer, corresponding , our board engraving machine also has R & D and production considerable development and progress.
Rapid pcb engraving machine advantages:
Fast, direct use of EDA / CAD design data , as easy as drawing
The number is high, strong function, from a single panel to the double-sided , high frequency from the digital board to board
No environmental issues, desktop devices for laboratories, classrooms and other spaces
Simple operation , do not understand the PCB process , any technician can use
Flexible configuration, multi-purpose, suitable for high-end development of real-time production samples , but also for teaching or small batch production
Feature
Rapid PCB engraving machine on the host structure are floating platform structure . Three stepper motor driven XYZ direction by engraving head , moving the platform to achieve positioning and rotation control achieved by milling spindle motor functions of the system are used in high-speed drill frequency spindle motor , XYZ direction wire bars are used to locate the ball , the minimum processing diameter 4mil, minimum processing line from 6mil, resolution of less than 1um, wire side straight neat , precise geometry of the conductive pattern .
Innovative features
Sided engraving : Visual precise positioning , eliminating visual error
Automatic origin orientation : a key setting origin off automatically when the origin , back to square one-button ease
Breakpoint carving : You can set any schedule from the beginning to continue processing
Virtual processing: according to the parameters set , the virtual display actual process
Real-time display : real-time display of current processing point and path for easy observation at any time
Universal drilling : fixed cutter dig any holes , reducing the number of change drill simplify manual operation
Isolation: milling along the road edge channel isolation width can be set
Regional Carving : You can choose to re- carved multi-block area
Physical hole of : carry -hole metallization by copper sink method
Double limit protection : X, Y, Z double limit protection , overrun from the stop, to ensure safe operation
Multi-purpose : can be used panels, label engraving
The study found
1.PCB circuit board engraving machine dowel pins to achieve a replica of the progress of the work will occur engraving machine minor changes and will leave many traces of positioning holes on the stage , the impact of the frequency of use and processing platform.
2.PCB circuit board engraving machine in use a few years later , the precision mechanical parts will be minor changes , carving , drilling accuracy of the overall system will have some impact .
Based on these two important factors , combined with modern new control technology to improve the life of the machine , ensure accuracy , we developed a set based on Windows XP, Windows 7 operating system, visual alignment system software. Industrial uses 3.1 million pixels camera and megapixels industrial camera, connected to a computer via USB2.0 interface , access to relevant information board , according to the circuit board and software information comparing the information obtained in the open, and automatically adjust the control data processing , to compensate for the accuracy errors caused by the above factors .
Easy to operate, after the flap , as long as the open process of PCB diagram, choose two holes camera as a capture point , and then move the engraving machine to find the corresponding two holes , the software automatically calculates the adjustment process data . This step provincial play locating pins , and improve the use of a number of processing platforms , and also compensate for the problems caused by mechanical error generated by the machine using a long time .
Special Features:
1 , super Compatibility: compatible with all currently available in the market circuit diagram design software, such as : Protel 99SE/DXP, Altium Designer 09, Cam 350, Eagle, pads, proteus, auto CAD and other lines MILL common Geber format software.
2 , patented product, with independent property rights and product patent number, locate the origin of visual recognition automatically , eliminating visual errors , more accurate positioning ;
1 ) In the sculpture , a sudden power failure , re- acquisition system processing origin .
2 ) Mechanical system error compensation engraving machine for a long time used to ensure accuracy.
3 ) For the production of circuit boards , there is no uniform limit order to adapt to different users making habits.
4 ) can be on the circuit board ready for drilling , cutting edge .
5 ) can be brought by positioning holes play compensation system errors.
6 ) can be checked with SMD components soldered circuit boards, whether welding errors.
7 ) can be checked engraving good circuit boards, circuit if there is short-term .
8 ) . Using visual recognition to achieve power outages continued carving .
The main parameters : Processing panel: single / double sided
The maximum processing speed (m / min): 7.2
Maximum processing board (cm): 32 × 32
The minimum processing diameter (mil): 4
The minimum processing line from (mil): 6
Drilling diameter (mm) :0.4-3 .175
Drilling speed (strokes / min): 120
Positioning system : 310 million pixels camera industry
Spindle speed (r / min) :0-60000 stepless
Linear guide : imported linear guide
Transmission: Imported ball screw
Communication : RS-232/USB
Software compatible format : Protel 99SE/DXP, Altium Designer 09, Cam 350, Eagle, pads proteus, auto CAD , etc.
Security cover : metal safety cover ; Transparent Windows ; pneumatic shoring
How to buy
Pcb board engraving machine, engraving machine products as pcb circuit board manufacturing applications, is thirty years ago by a German invention. In China, for the development and manufacturing of this product , it is only the past two or three years to do. Related companies in product launch, more than all the existing hardware architecture borrowed engraving machine products , combined with related software , making carving knives in the desired path movement , milling carved out unwanted copper , leaving part of the need for the line ( pictured) , the purpose of making a circuit board.
So, when choosing engraving machine , hardware performance and software part of the function part , directly determines the circuit board production is good or bad , in the back, I will combine their experience, the two parts are introduced one by one .
As shown, the general structure of carving machine diagram divided into two categories, the difference is that when the Y -axis motor sport is fixed , bottom carved items to be driven by mobile (AM-3025) or motor moving sculpture, objects remain stationary ( AM-4040)
From the figure we see that the engraving machine consists of four major parts of the bed , three-axis drive system , the spindle motor and motion control system, which directly determines the four parts of the overall performance of the hardware , it represents a circuit capable of processing ultimate indicator plate.
First, the role of the bed , there are two , one is supporting the entire machine , the second is to provide a stable operating environment. Engraving machine at work again quickly , acceleration and deceleration will continue to make the bed under tremendous force , a good opportunity sculpture cast iron or aluminum, with the overall structure in the production of bed to deliberately increase the component to ensure that no force due generate swing and sway , causing cutter relative to the positioning of the base instability. If you find an engraving machine weight is too light , producing shaking at work , then this is the design of ill-considered, corresponding to its accuracy is also being reduced.
Second, three-axis drive system is mainly driven by the spindle motor movement in three directions X, Y, Z , the servo motor and drive systems , while having motion speed, high positioning accuracy , with a closed-loop control , etc., but because of its expensive price, often only on the highest-end machine was able to apply , engraving machines currently on the market is mainly driven by a stepper motor applications . Stepper motor current, torque and other indicators, the average consumer does not necessarily understand , but the circuit board engraving machine used motor current is basically in the range 1-3A , and a diameter of about 5-6 cm , consumers can determine their visual observation or ask the sales staff to understand, because the motor is too small to generate speed drive capability will not go weak phenomenon in a machine screw drive does not appear. More important than the drive motor are different ways , that is how to drive the spindle motor to generate movement. Currently engraving machine industry is the use of the universal application of anti-backlash ball screw with a function to drive, using round or square rails support. Advantage is the high precision screw , torque, can drive loads quickly and accurately arrived at the designated location. Currently used by the drive screw 5mm lead after eight segments can generate a minimum stepping distance in a straight line from 0.003125mm, greatly improving the accuracy of the positioning . We carved a 10mil (0.254mm) wide line, from one side to the other side of the pulse to be generated over 80 to locate , as the step is avoided resulting in much lower ability to localize and identify the problem. There are some early products using the belt ( rubber band ) to drive form, which because of inaccurate positioning , timing belt stretching and aging issues has long been abandoned industry , currently exist only in a small number of low-end products.
Third, currently recognized by the spindle motor adopts frequency speed spindle speed ranging from 20000-100000rpm. The main advantage of this motor is the yaw rate, yaw tip is generally less than 0.005mm, carved out a precise, clear lines. Common engraving machine engraving industry efforts to consider the issue, mostly by larger power spindle motor and supplemented water cooling system when carving board because the load is small, so the power is relatively minor, more emphasis is speed and yaw, etc. factor. Vintage brushless motors because they do not have these advantages, they can not adjust the speed and noise, is no longer used in the mainstream market, only a few occasions as well as the application requires lower.
Fourth, high-performance hardware to improve the production capacity of the representative, but whether you can produce outstanding works will depend on the production level, which is the ability to control the motion control system. Currently on the mainstream market has been widely used to control machine movements DSP chip, its main features First interpolation calculation quickly, the second is to coordinate three axes synchronized motion. So when we slash moment when you can get a standard circle or circle or slash it. There are still some products using SCM control, we can clearly see this machine is made out of jagged edge graphics, this is mainly because the tip is X, Y turns to go, it is not carved directly sideways results.
Mainstream engraving machine index
AM-3025 circuit board engraving machine performance
The maximum size of 300mm * 250mm PCB
The minimum diameter can be made 8 mil
The minimum line spacing can be made 8 mil
Maximum operating speed of 4.2 m / min
24000 rpm spindle speed
1. PCB maximum size indicated is the maximum that can produce the circuit board, which is the size and the rigidity of hardware limitations. General machine design, circuit board area rarely consider on the one hand doing great, another format also makes much of the hardware deformation, so mostly in the 300mm square. Most board carrying platform overall manufacturing cast iron or aluminum, to ensure strength and rigidity.
2 can be made a minimum diameter and thread pitch, is an important indicator representative of machine precision, which reflects the positioning capability and accuracy of the tool tip. Most people have a misunderstanding here, just to see the effect of the minimum diameter, but ignored the minimum line spacing, line spacing was in fact a minimum level of representation of the machine. The minimum diameter is determined by the orientation of the tool tip relative to 200um (8mil) minimum diameter, stepping from the smallest tip can reach 3.125 um very easy to implement. There are even tip deflection, can also do repair on the value of the tool selection. The minimum line spacing can not do to hide, even if only 0.1mm wide tip, not in motion plus yaw control will make the tool through the traces become very wide, very close to the two separated All draw-off line. Read here, you might understand why a lot of people who stress the smallest diameter when selling, but then the line aside from ignoring the reasons, can also be indicators of this, I learned to control at the time of purchase of the product ability and level of assembly.
3. Maximum operating speed, is the X, Y axis movement speed. In fact, the board engraving process, we use the speed is very low, so why emphasize this indicator? On the one hand represents a high-speed motor drive capability, that allows it to move quickly, but also make it a quick stop, it also represents a good track assembly, screw and other parallel relationship, a small damping, will not affect accuracy. Of course, this is a normal screw drive machine in order to reflect, and if the timing belt or wire transmission, that speed would only represent the motor speed quickly, accuracy and other indicators would not make any sense anymore.
4 high speed spindle, driven tools such as fast knife melon general, milling out of the line pretty neat, good effect. However, the high speed is also sacrificed the life of the motor, the same motor speed in the calibration range, doubling the speed of life will decrease by half, so the speed is not as high as possible, but to achieve an ideal value. Brushless motor itself due to the structure, it is difficult to break through the high speed, but also produce much noise, so the engraving machine spindle design ,20000-40000 rpm spindle motor frequency is about the ideal choice. For regular engraving small diameter line from the user, can be considered as the choice of a higher speed 60000rpm.
Core ---- Software section engraving machine
In the software, including the menu area, the display area of several main parts, a control area and a functional area.
Menu area:
1, the File menu (F): including processing the file is opened, store and closed because the circuit board CAD files and general files are not compatible with their own unique storage formats and features, the software is also designed for this file alone design. There are currently on the market part of the ordinary engraving machine manufacturers declared support carving board, I have a simple PCB document issued in the past asked to do a model, the answer is a document open, I can only laugh.
2, the processing menu (M): includes the magazine to add, delete, machine parameters, processing parameter settings adjustments.
3, the View menu (V): look at the display section provided, including the bottom, the top of the hole, line profile, display size and other functions, with the same function display area.
4, the Help menu (H): contains the software version information and help functions.
Display: When we open a file after processing, pressing the top of the bottom, bottom, hole button, look at the bottom line, respectively, document, top and hole information. Turn the mouse wheel to zoom the display section, we need to adjust to the position.
Ribbon: provide the full functionality of circuit board production, including opening the file, locate the hole punching, drilling, try carving, line isolation boundary, the copper engraving, cutting edge and so on.
Control Area: mainly used for processing before tip or drill positioning and processing adjustments, X, Y, Z-axis display coordinates relative to the position of the tool tip change the settings of origin, must be noted that, Y-axis Mobile is the floor moving in the opposite direction, the tip remain intact.
Jog: When jogging, moving the input box on the right coordinates in mm units, press X, Y, Z coordinates corresponding, tip ie moving data input corresponding distance (three-axis coordinates are When we are on the engraving machine operation, the trajectory of the tip relative to the base plate set). The minimum input data is 0.005mm, while inching tip moves faster the state can also be used to quickly adjust the position of the tool.
Manual: In manual mode, press the button to adjust the coordinates, ie, slow-moving tip in the specified direction, hold down the button and move the tool tip that will not stop.
Set origin: When we carved through repeated trial to determine the starting position of the tool tip in the surface of the plate, and press this button, all the coordinates are cleared, the relative position of the origin point is set to the line. Work process, we can always observe the tip where the coordinate position to determine whether there is a problem processing. Meanwhile, after the completion of each function, the tip will automatically return to the home position, fully prepared for the next step in our process.
Pause: to control the processing of pause and stop, after a pause button is pressed, the button will change to continue, press again to continue processing. In the pause and stop state, the button can be controlled tip coordinate movement, working condition can not be controlled. In this software, we can see is the core part of the ribbon, the following several key features of the presentation.
Positioning hole punch: Use the drill along the way documents outline the four corners of each rectangle largest drill a hole positioning for precise positioning of the circuit board top and bottom positions. Meanwhile, the lower left coordinate of the positioning holes is the default location of the origin of our file during processing line. When we finished bottom line flip the board to do the top four positioning holes is to ensure a reliable basis for the positive and negative spaces.
Drilling: Drilling click the button to enter the menu as shown in the drilling. The left column shows the line is present in the document acquisition software pore size of several specifications of the intermediate blade bore size selectable, the selection apertures (e.g., 0.762), select the appropriate drill bit (for example 0. 8), click the Add button in the tool bar has been selected to confirm. Were selected based on the aperturecorresponding tool, and click OK to begin the drilling process, when a specification of hole machining is completed, the software will automatically prompt you to change the specifications of another drill until processing is complete. If you choose the wrong tool or modified, click on the right after the point corresponding aperture delete button, the corresponding aperture will return to the left column, you can re-select.
Isolation: line isolation, engraving tip is to make the outer boundary along the road, making the copper wiring and insulation around separately.
The existence of a smaller line spacing in the line, the use of isolation is the only way to ensure accurate pitch, when the software does not have this feature, can only rely on hollow features described below to swing around milling engraved line is scratched it is inevitable. Also in the production, isolation can also be used as part of the line trimming feature that makes the boundary line smooth and tidy, will play in the high-frequency lines to better effect.
Pierced: Pierced function that is part of the copper circuit board in addition to milling out process. Engraved milling time, the effect and the path we have chosen hollow knife according to the decision, the general said, the larger the radius, the shorter the time; tool diameter is smaller, the longer.
Introduction and buy points
Use the circuit board engraving machine, can quickly create a sample board, shorten development time, save development costs, and a high degree of confidentiality, do not use ferric chloride, so pollution-free, pollution-free; devices are small, does not account for laboratory space, hardware and software installation simple and quick, circuit board drilling, line engraving, cutting shape according to a complete, is the best choice circuit development.
PCB circuit board engraving machine production process
1, GerberFile Go engraving machine driver --- understand PCAM program operation.
2, load a new file --- load GerberFile, DrillFile / automatic calculation path.
3, the attachment --- test the machine process
4, drilling --- By-screen prompts to replace the drilling tool
5, the scanning plane detection --- PC board plane
6, carving lines --- according to instructions on the screen to replace the engraving tool
7, through-hole plating tank plating --- Construction
8, PCB forming --- according to instructions on the screen to replace the molding tool
9 complete
Drilling
Drilling process is through our engraving machine we designed the circuit diagram of all the holes are drilled through the handle. Most in need of attention is drilling deep drilling, detailing the use of drilling engraving machine engraving machine, see the operation manual and video
How to set drilling depth?
Under normal conditions the circuit board drilling is to let the drill drilled circuit board, so when we usually set the drilling depth to the board on the basis of combined thickness of 1mm to ensure that the drill will drill through the circuit board.
For example, you use a board thickness of 1.6mm, then set the drilling depth in the depth micrometer adjustment of put it to 1.6 +1 = 2.6mm.
Cutter engraving machine uses the following four categories:
Burin: The main line isolation, 90 degrees and 60 degrees chisel chisel two kinds, Ke Yi width of your design to choose.
Hollowed knife: mainly used to remove copper, depending on the size of 0.5mm and 1.5mm have two kinds.
Drill: You can drill designed circuit board holes of various sizes.
Forming Tool: You can build your circuit board is designed according to the size and shape cutting down
How to buy a circuit board engraving machine (performance)
When you purchase engraving machine, hardware performance and software part of the function part, directly determines the circuit board production is good or bad. General structure engraving machine can be divided into two categories, except that the y-axis movement when the motor is fixed, bottom driven movement of the articles to be engraved, or motor moving sculpture, objects remain stationary.
Engraving machine includes four large portion of the bed body axis drive system, the spindle motor and a motion control system, which directly determines the four sections of the overall performance of the hardware, but also represents the ultimate indicator boards can be processed.
Four tips PCB engraving machine is good or bad
One. PCB engraving machine software:
PCB engraving machine or bad judgment is not only carving precision problems, there are many software features is also very important, there is no independent software, there are no software function.
For example, a finished carving board and found no carved into the local software functions not, this board would be scrapped, there is software locally carved features, you can be compensated for local engraving completed.
Another example is the process of carving out a sudden accident (such as a power outage, cutting knife), software functionality is not strong can only be scrapped, there are power outages continued carving function can wait for the call to continue carving down.
So have independent software or software features use of PCB engraving machine strength is very important. It is the key to ensuring the success of a board can carve.
Two. Engraving accuracy:
Accuracy is one of the key carving many customers to buy PCB engraving machine for less precision customers, most engraving machine can achieve. For precision engraving machine will depend on the requirements of the transmission mode, the belt drive or screw drive? Repeat positioning accuracy is poor belt drive, screw drive repeat high positioning accuracy.
Three. Spindle motor (influence of sculpture and hole quality)
1. is a DC motor or inverter motor? Professional PCB engraving machine spindle motor must be variable frequency motor.
2. spindle motor speed: speed directly affects the quality of the carving and the hole, the higher the speed, the more the quality of the carving and the hole is guaranteed. Professional PCB engraving machine spindle motor speed in 30000r/min more.
Four. Transmission mode (serial / USB or Parallel Transfer)
Transmission is a professional PCB engraving machine serial / USB, transmission speed, there are software packages.
Parallel transmission engraving machine engraving machine and generally do not have supporting software, draw a good PCB plans to convert into a functional sculpture with too few hours.
About PCBway
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With more than a decade in the field of PCB prototype and fabrication, we are committed to meeting the needs of our customers from different industries in terms of quality, delivery, cost-effectiveness and any other demanding requests. As one of the most experienced PCB manufacturers in China, we pride ourselves to be your best business partners as well as good friends in the every aspect of your PCB needs.
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PCB is one of the most crucial parts of any electrical and electronic devices. The quality of PCB determines the quality of all these devices. The modern technology makes possible the increasing miniaturization of integrated circuits, higher packing density and smaller layout dimension, hence the higher demands on PCB arise. We fully understand the importance of PCB quality for our customers and therefore we visually check every board, and we electrically test them again to ensure our shipped boards exactly comply with your Gerber files.
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