Six Axis PCB Error Detection CNC Machine

Project Title

Six Axis PCB Error Detection CNC Machine

Project Area of Specialization Mechatronics EngineeringProject Summary

With the advancement of industries, automated machines are developed to reduce the throughput time and human errors. It is easy to detect errors through small package PCB but when size increases and complexity of board increases then it is not feasible to detect errors manually, also human errors still can’t be neglected.

So, project is basically a prototype of FLYING PROBE TESTER (PCB Error Detection Dual Header CNC Machine)  which will check single side PCB having workspace of 9*9 inches for short and open circuits  at low cost in various industries related to electronics where PCB’s are manufactured in bulk amount.

This machine is basically used for error detection before assembly but after some modifications it can be used for error detection after assembly too as mentioned below in benefits section .                                   

Project Objectives

1)Make dual head CNC structure (Flying Probe Tester).

2. File Processing.

a)Test point file generation.

b)Removing non-declared pins.

c)Data sorting.

d)Unit conversion.

3. Code generation (for shorts and opens).

4. Testing and inspection of PCB (short and open circuit test).

Project Implementation Method

Dual head CNC structure is designed in Cartesian configuration just for two probes in DMM in connectivity mode. Test point is generated from the PCB CAD software which is processed in Microsoft office where non-declared pins are removed, then processed in MATLAB where algorithm is developed for test points of short and open traces are developed. This file is utilized for the machine to go to the specific position, takes data and match it with the reference data. Finally, results will be displayed on the LCD screen.

Benefits of the Project

There are two stages of error detection:

1. Before assembly

2. After assembly.

Our project is working on before assembly error detection, principle and benefits are mentioned below:

1. Human error eliminates.

2. Testing time is reduced.

3. More flexible then ICT bed nail fixture.

4. After some modification, it can be extended to perform after assembly tests such as:

a. Passive Component testing.

b. Active Component testing.

c. Optical testing.

d. Power on voltage testing.

Technical Details of Final Deliverable

1. Single side PCB inspection.
2. Short and open testing.
3. Protection of overlapping of probes
4. Touches per second.
5. Minimum pad size 2mm.
6. Minimum short testing range 4mm.
7. Workspace (9*9 inches)

Final Deliverable of the Project HW/SW integrated systemCore Industry ManufacturingOther Industries Others Core Technology RoboticsOther Technologies OthersSustainable Development Goals Industry, Innovation and InfrastructureRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	65950
AC Wire	Equipment	1	150	150
Power Supply	Equipment	1	1500	1500
Connecting wires	Equipment	30	8	240
Sleeves	Equipment	2	50	100
Spiral Flexible Wrapping	Equipment	2	150	300
Verom Board	Equipment	1	90	90
Buck Converter	Equipment	1	100	100
Arduino mega	Equipment	1	1200	1200
Stepper shields +Drives	Equipment	1	1200	1200
tactile Switches	Equipment	10	10	100
3D Printing	Equipment	300	35	10500
linear rods	Equipment	6	1000	6000
bearings	Equipment	14	300	4200
pvc sheets	Equipment	3	3000	9000
stepper motors	Equipment	6	1300	7800
servo motor	Equipment	2	450	900
belts	Equipment	6	450	2700
labour	Equipment	1	6000	6000
pulleys	Equipment	6	70	420
probes	Equipment	2	1000	2000
Thesis Books Printing	Miscellaneous	4	550	2200
Reports Printing	Miscellaneous	4	125	500
Trasport	Equipment	25	350	8750