NEED STATEMENT

The support staff in THINKERING LAB are fed up of providing drill bits every now and than,and thus are in need of AUTOMATIC DRILL BIT DISPENSER in the lab.

Fig 1. Drill Bits

MECHANISM : It will consist of both mechanical and electronic parts in it.

Mechanical Parts Required	Electronic Parts Required
* DC Motor	* Sensor
* Power Supplier	* Electromagnets
* Drill Bits	* Card scanner

Mechanism of Automatic Screw Dispenser

There are different models of automatic screw dispensers available, so consider your unique needs when selecting one. As an example, for manufacturing environments that have robotic screwdriver systems in operation, there are screw dispensers specifically designed for those types of tools.

Also, keep in mind that the speed at which the screws are dispensed can be adjusted to suit your work pace. So, once you are comfortable with using the device, you may want to increase the speed in order to complete your work even faster. To be useful in industrial settings, these devices have a pick-up rate of up to two screws per second.

Businesses will always have to face certain challenges in order to be profitable. For a company like a fast-paced assembly line that is always looking for ways to operate more efficiently, quality tools that save time are critical. We can’t slow time down, but by choosing the best tool for the job, we can make the minutes and hours an ally in our race to accomplish more.

Use Of Automatic Screw Dispenser

Before operating a screw dispenser, make sure it is sitting on a level and stable surface, like a workbench. You don’t want to risk it falling over after you start operating it.

Whether you use it for low volume or high volume production, an automation screw dispenser is simple to use. Here are the steps to follow: Pour the screws into the hopper. 1.Fasten the lid. 2.The mechanism will automatically line up the screws inside the dispenser into a rail system. 3.The screws are now ready to be dispensed. 4.Make sure the fastener sits in the bit guide. 5.The bit is magnetized so it quickly engages with the screw head. 6.Remove the fastener. 7.Another screw is immediately dispensed, ready for pick-up.

sl no	components or parts used	mechanism	links
1	PILL DISPENSER * Mdf: 4 mm thickness for the inner case * Mdf: 3 and 6 mm thickness for the outer case Assembly * Bolts and nuts (M2 and M3) * Small ball bearing * Microcontroller:Arduino UNO * Electronic parts- Blank circuit board Small Servo motor 9g Small DC-motor 5V Transistor: BC 237 (NPN bipolar transistor) Diode 1N4001 (Peak Inverse Voltage of 50V) Passive buzzer: Transducteur piezo LCD1602 Resistors:1 x 270 ohm ,1 x 330 ohm,1 x 470 ohm,5 x 10k ohm Infrared emitter,Infrared detector	Our pill dispensing mechanism is as follows: the user puts the pills in the storage compartment in the top of the box. As the bottom plate of that compartment is slanted, the pills will automatically slide down into the first tube, where they stack up. Under this tube is a cylinder with a small hole in where just one pill fits perfectly in. This small hole is located right underneath the tube so that the pills stack up above it, while the first pill lays in the hole of the cylinder. When a pill has to be taken, the cylinder (with a pill in) rotates 120 degrees so that the pill in the cylinder falls down into a second cylinder. This second cylinder is where a sensor is located that detects if a pill has actually fallen down from the cylinder. This serves as feedback system. This tube has one side that sticks out higher than the other one. This is because this side prevents the pill from falling over the second tube, and thus helps guarantee that the pill will drop into the tube and will be detected by the sensor. Underneath this tube is located a small slide such that the dropping pill will slide trough the hole in the front of the inner box.	https://www.instructables.com/The-Automatic-Pill-Dispenser/
2	CD VENDING MACHINE Materials-Coin slide in amount of desired cost/cd,Wood,Machine screws and nuts,CD Case,Gasket Material,Misc pieces of metal,Plexiglass,Tools,Drill,Saws,Screwdrivers	For the grabbing mechanism I used some gasket material that I had laying around. To mount it to the coin slide I used some extra pieces of an erector set that I used to have. I just bent part of it to make an L shaped braked and mounted 2 of them to the coin slide with intention to use both of them but just ended up using one. I took the gasket material and cut a rectangular piece that was plenty tall enough to hit the cd and then some. I took and cut an elongated notch in it that way it could easily be adjusted to grab the cd.	https://www.instructables.com/Cd-Vending-Machine/
3	SUGAR DISPENSER MATERIALS REQUIRED :Arduino Uno,360-degree servo moto, HC-SRO4 Ultrasonic Sensor, Wooden Blocks, Jumper wires,Bread board,Sugar Box,3D print screw conveyor,PVC pipe and T shape PVC,Drilling machine,Screws,Funnel,Powder adaptor charger	Ultrasonic Sensor It emits an ultrasound at 40 000 Hz which travels through the air and if there is an object or obstacle on its path It will bounce back to the module. Considering the travel time and the speed of the sound you can calculate the distance.The HC-SR04 Ultrasonic Module has 4 pins, Ground, VCC, Trig and Echo. The Ground and the VCC pins of the module needs to be connected to the Ground and the 5 volts pins on the Arduino Board respectively and the trig and echo pins to any Digital I/O pin on the Arduino Board.In order to generate the ultrasound you need to set the Trig on a High State for 10 µs. That will send out an 8 cycle sonic burst which will travel at the speed sound and it will be received in the Echo pin. The Echo pin will output the time in microseconds the sound wave travelled.For example, if the object is 10 cm away from the sensor, and the speed of the sound is 340 m/s or 0.034 cm/µs the sound wave will need to travel about 294 u seconds. But what you will get from the Echo pin will be double that number because the sound wave needs to travel forward and bounce backward. So, in order to get the distance in cm we need to multiply the received travel time value from the echo pin by 0.034 and divide it by 2.	https://www.instructables.com/Sugar-Dispenser/

SOLUTUIONS or IDEAS

Sl No.	Electronic components	Mechanical components	Mechanisms	Images
1	Keypad, IR sensors,servo motor,Bread board,	Lazy tong,Acrylic sheets,wooden sticks	Lazy tong expansion and compression is used to automate the rack of bits	Fig 2. Lazy tong
2	Adrino devices,Keypad,IR sensors	Rotating cylinder,Acrylic sheets,A rod,Bits holder pouch	Automation of rotating property

Advantages:-

• Helps reduce time
• Accuracy in bit dispenser and collection
• Effective management
• Saves manpower cost in one time investment

Reference:-

1.https://www.homestratosphere.com/types-of-drill-bits/

2.https://i.ytimg.com/vi/jYDGrdqYAAM/maxresdefault.jpg