Due to the rapid growth of technology the usage & utilization of CNC machine in industries are increased. The fabrication of low cost CNC machine is used to reduce cost and complexity of machine. This paper deals with the design of automatic mini CNC machine for PCB drawing and drilling. The Ide
PCB DEGNING CNC MACHINE
Due to the rapid growth of technology the usage & utilization of CNC machine in industries are increased. The fabrication of low cost CNC machine is used to reduce cost and complexity of machine. This paper deals with the design of automatic mini CNC machine for PCB drawing and drilling. The Idea behind our project is to design and drill PCB based on low cost CNC system the lower cost is achieved by incorporating features of PC with ATMEGA 328 controller in an arduino. We have use an G code for whole system operation G code is nothing but a language in which people tell computerized machine tools
A CNC machine is a machine that utilizes Computer Numerical Control over machine tools like lathes, routers, grinders or mills. Computer Numerical Control is different from typical PCs in the type of software used to control the machine, which is specially customized and programmed with G-Code — a specific CNC machine language that allows precise control of features like speed, location, coordination and feed rate.
Specialized software drives the computerized machining. The software has customized G-code, the language that enables precise control of coordination, feed rate, location and speed, among other factors. The G-code-infused software sits within a computer that looks like a sophisticated desktop.
One programmer at the computer console can command machine work that would be the equivalent of multiple operators on lathes, grinders, routers, mills and shapers. The computerized, automated machining method can achieve reaches, holds and other actions human operators and conventional machines typically don’t do efficiently.
Manufacturing finds CNC machining particularly useful because the industry needs large amounts of metal and plastic parts, often in complex shapes. A variety of CNC machines offer the advantage of having multiple axes that can adjust to difficult angles and help manage hard-to-cut materials.
Basic machines have a cutting implement along X- and Y- axes that can each work independently, yet simultaneously. Advanced machines may have up to five axes that perform similarly and have the capacity to turn and flip the part. For example, the Z-axis moves up and down.
CNC machines can automate the jobs that require several cuts. A router or spindle turns the cutting implement, which usually resembles a drill bit. A true drill bit cuts only at the tip, while nearly all of a router bit cuts the material.
Precision Components: The digital template and autonomous machining of CNC practically eliminate human error
Reliable Endurance: CNC machines work around-the-clock daily, weekends and holidays. They only stop for needed maintenance or repair.
High Production and Scalability: Once the design parameters and specification have been entered into a CNC machine.
More Capability: When used in tandem with advanced design software, CNC machines create outputs that cannot be replicated by manual machines.
Less Labor: CNC machining requires fewer personnel to execute the production tasks. One skilled operator can run several of the autonomous CNC machines, and one programmer can get them loaded with the needed designs.
Uniform Product: When you choose the advantages of CNC machines over conventional machines, your CNC outputs match exactly.
the whole project will documented by progress report which were elaborated every six months.
The content was:
Executive Sumary
World-wide "state of the art" update
Exploitation of results
Work progress overview
Clarifications Information dissemination activities
Contractual matters
| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Rail support | Equipment | 12 | 300 | 3600 |
| NEMA17 bracket | Equipment | 4 | 500 | 2000 |
| Lead screw w/nut 400mm | Equipment | 3 | 900 | 2700 |
| Lead screw w/nut 150mm | Equipment | 1 | 600 | 600 |
| Linear rail | Equipment | 6 | 1500 | 9000 |
| Shaft coupling | Equipment | 4 | 400 | 1600 |
| Anti-backlash lead nut | Equipment | 4 | 1000 | 4000 |
| Linear bearing | Equipment | 12 | 600 | 7200 |
| Pillow block | Equipment | 8 | 350 | 2800 |
| Spindle | Equipment | 1 | 10000 | 10000 |
| Spindle clamp | Equipment | 1 | 2000 | 2000 |
| NEMA17 stepper 34mm | Equipment | 3 | 2000 | 6000 |
| NEMA17 stepper 48mm | Equipment | 1 | 2500 | 2500 |
| Aluminium plate | Equipment | 1 | 11000 | 11000 |
| Aluminium angle | Equipment | 1 | 5000 | 5000 |
| PCB ink | Miscellaneous | 3 | 3000 | 9000 |
| Total in (Rs) | 79000 |
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