1. PERTINENT GATHERING INFORMATION - M-Division-2020-2021-Even/Repo_12 GitHub Wiki
NEED STATEMENT : CRICKET BALL LAUNCHING MACHINE
1) What kind of information sources are to be searched?
Information collect on topic called ‘Launching Devices ‘ by various platforms those are
Journals, You-tube ,internet ,patents etc .
In cricket a bowling machine is a device which enables a batsman to practice (usually in the nets) and to hone specific skills through repetition of the ball being bowled at a certain length, line and speed. It can also be used when there is no-one available to bowl, or no one of the desired style or standard.
There are a number of different types of bowling machine available to cricket coaches, each quite different in the ways they achieve the required delivery, though most allow the use of remote control, so that a coach can be closer to a batsman when the stroke is played.
Below shared links will provide information about existing ’ LAUNCHING DEVICES’
INTERNET : https://www.researchgate.net/publication/324816491_Development_of_a_Soccer_Ball_Launching_ Device
https://docs.unrealengine.com/en-US/SharingAndReleasing/Deployment/Launching/index.html
YOUTUBE : https://youtu.be/ma2nW3S-XIs https://youtu.be/4V08J3joavk
JOURNELS : GJ Rich - Proceedings of the IEE-Part B: Radio and Electronic …, 1955 – IET
PATENTS : Ball launching device- google patents
2) What are the existing solutions to the problem?
i) TENNIS BALL LAUNCHER
The majority of tennis ball launcher machines on the market operate using counter-rotating wheels. When the machine is turned on an electric fan draws in outside air which is then pushed into the canister. To protect the fan motor from debris the air passes through a slab of foam as well as a screen barrier.
ii) LINE THROWING APPARATUS IN SHIPS
Line throwing apparatus refers to a class of life-saving appliances (LSA) that are found on every vessel. It is used to throw weighted ropes known as lines over long distances. It uses a variety of launching methods and can be used for numerous maritime applications. From hauling supplies, connecting ships, and providing supply lines, to aiding in rescue operations, line throwing apparatus are an essential component of any ship, irrespective of whether it traverses the oceans or stays within domestic waters.
iii) PROJECTILE LAUNCHER
The Projectile Launcher is used to investigate important concepts in two- dimensional kinematics. A steel ball placed in the launch barrel can be projected for different launch velocities and launch angles. ... Upon setting the desired angle and range, the hand pump is then used to pressurize the system.
3) Have you gone through any DIY projects?
- DOITYOURSELF.COM
- DIY Ideas
- DIY.engineering
- Makershare.com
- Forum.adafruit.com
- Forum.ardino.cc
- Instructables.com
- Easy 2 DIY
- Mechatronics.com
- DIY & Crafts.com
- Handyman tips.com
- Instructables.com
- Engineersgarage.com
- DIYnot.com
- Apartmenttherapy.com
4) What all components & sub-components do you feel are needed for your project?
| SI.NO | NAME OF COMPONENTS AND SUB-COMPONETS | IMAGE |
|---|---|---|
| 1 | Motor Mountings |  |
| 2 | PMDC Motor |  |
| 3 | Ball feeders |  |
| 4 | Launching Wheels |  |
| 5 | Synchronous belt wheel |  |
| 6 | Motor speed controller |  |
| 7 | Rubber foot pads |  |
| 8 | Final Assembly |  |
Sources:
Youtube : https://www.youtube.com/watch?v=43UVNi1CgFs&t=6s
Youtube : https://www.youtube.com/watch?v=2pZU_Rwc32E
5) Make sure that the information you collect are recent enough.
Table 1 Information Collected by various sources
| SL.NO | COMPONENTS OR PARTS USED | MECHANISM/WORKING PRINCIPLE IDENTIFIED | LINKS |
|---|---|---|---|
| 1. | Motor Mountings | Motor Mountings is necessary for proper motor installation and mounting position is essential in obtaining top-quality operation, efficient performance, and maximum reliability | http://www.drivesandautomation.co.uk/useful-information/motor-mounting-codes/ |
| 2. | PMDC Motor | PMDC Motor is a permanent magnet DC motor, the armature is placed inside the magnetic field of a permanent magnet; the armature rotates in the direction of the generated force | https://www.electrical4u.com/permanent-magnet-dc-motor-or-pmdc-motor/ |
| 3. | Ball feeders | Bowl feeders work by aligning small parts and components and feeding them into a production line for further packaging or processing | https://www.eaminc.com/blog/how-vibratory-bowl-feeders-work/ |
| 4. | Launching Wheels | There are two of this part that are identical in size and shape, and these will be used to develop the final compression paper, as well as launching the ball | https://zenodo.org/record/3505408/files/Design%20and%20Fabrication%20of%20Cricket%20Ball%20Launching%20Machine.pdf?download=1 |
| 5 | Synchronous belt wheel | Synchronous belts transmit power via positive engagement between profiled teeth on the belt and pulley. Although this tooth engagement prevents the belt from ratcheting | https://www.linearmotiontips.com/when-do-synchronous-belts-need-flanged-pulleys/ |
| 6 | Motor speed controller | Motor speed controllers are electronic devices that control motor speed. They take a signal for the needed speed and drive a motor to that speed | https://www.globalspec.com/learnmore/motion_controls/motor_controls_drives/motor_speed_controllers |
| 7 | Rubber foot pads | The rubber pads is used for protecting the surface and, used to reduce the chances of slipping and are self-adhesive | https://www.iksonic.com/shop/rubber-pad/foot-pad/rubber-leveler-feet-furniture-adjustable-feet-bolt-oem/ |
| 8 | Final Assembly | A final assembly is the last stage in the manufacturing process, the point where the components of a product are put together | https://www.wise-geek.com/what-is-a-final-assembly.htm |
6) What direct solutions are available for the need statements given for you? List all those solutions with images and brief description with proper citation.
Solution : 1
This is a bowling machine is a device which enables a batsman to practice (usually in the nets) and to hone specific skills through repetition of the ball being bowled at a certain length, line and speed. It can also be used when there is no-one available to bowl, or no one of the desired style or standard. There are a number of different types of bowling machine available to cricket coaches, each quite different in the ways they achieve the required delivery, though most allow the use of remote control, so that a coach can be closer to a batsman when the stroke is played.
Solution : 2
The main mechanism of the machine consists of two heavy wheels, between 30 and 50 cm in diameter, fitted with solid or pneumatic rubber tyres, each driven by its own electric motor. ... A chute delivers the ball between the wheels, protecting the coach's hands.
SOURCE: http://www.bola.co.uk/
Solution : 3
Most of the space in the machine is a hopper that contains the balls. At the bottom of the hopper, near the front, is a rotor with space for six balls. The balls slot into the spaces on the rotor by gravity, which then takes them into the innards of the mechanism. The rotor passes over a trap-door, which the ball opens with its weight, falling into a small chamber.
A pump is used to provide a flow of air into the chamber that the ball drops into. The airflow pushes the ball along the chamber to rubber ring, or gasket, known as a "restrictor". The restrictor has a hole through it that is sightly smaller than the ball, which the ball presses up against. This seals the hole, so air pressure builds up in the chamber. When the pressure is so great that the restrictor can no longer hold it, the ball bursts through, out of the main body of the machine and into an external tube, which guides it upwards and releases it at the height of a bowler's arm.
7) Hints and ideas for launching devices
1) TRAJECTORY BALL LAUNCHER
Since the launcher will launch the ball so that it launches with a parabolic trajectory, the physics behind projectile motion comes into play. ... It is torsion powered with many ropes twisted in a figure-8 formation around one end of the beam, with the projectile in a bucket at the other end to be launched.
2) AURDINO-SIM
The Arduino simulator is a virtual portrayal of the circuits of Arduino in the real world. The Simulator helps beginner and professional designers to learn, program, and create their projects without wasting time on collecting hardware equipments.
3) Torque REQUIRED ROLLER BALL LAUNCHER
The electric motors are spinning at ~7000 RPM (no load),
A wheel (with mass of 0.05 kg and radius of 50 mm) is connected to each motor The tennis ball is dropped down the pipe and ends up in between the two rotating disks The launching angle is 20 degrees
4) ROTARY J0INT
Rotary joint - a freely moving joint in which movement is limited to rotation; "the articulation of the radius and ulna in the arm is a pivot joint" articulatio trochoidea, pivot joint, rotatory joint. articulatio synovialis, diarthrosis, synovial joint - a joint so articulated as to move freely.
8) Calculate cost estimation for the existing solution.
| SL.NO | Name | Cost |
|---|---|---|
| 1 | Motor Mountings | Rs 600 |
| 2 | PMDC Motor | Rs 1200 |
| 3 | Ball feeders | Rs 800 |
| 4 | Launching Wheels | Rs 900 |
| 5 | Screws | Rs 400 |
| 6 | Synchronous belt wheel | Rs 400 |
| 7 | Motor speed controller | Rs 600 |
| 8 | Rubber foot pads | Rs 300 |
| TOTAL | = Rs 5200 |