Machine Building

Jalebi Maker By Fab Lab Vigyan Ashram

For this machine building week, we did manufacture and tested Jalebi Making machine. We did all the required fabrication along with electronics work to ensure design outcome of this jalebi making machine.

About Jalebi Dish

Jalebi (Hindi: जलेबी), is a popular sweet snack in south and west Asia, Africa, and Mauritius. It goes by many names, including jilapi, zelepi, jilebi, jilipi, zulbia, jerry, mushabak, z’labia, or zalabia.

The south Asian variety is made by deep-frying maida flour (plain or all-purpose flour) batter in pretzel or circular shapes, which are soaked in sugar syrup. Jalebi is eaten with curd or rabri (in North India) along with optional other flavors such as kewra (scented water).

Traditional Mathod For Jalebi

Traditionally jalebi making sone by depositing raw mixture of jalebi through small circular hole of a cloth and the design and shape of jalebi to be produced depends on the operator’s skills.

Motivation To Automate Jalebi Making Process

We decided to automate the Jalebi manufacturing process by considering three major reasons.

1) Skilled operator plays a major role to cook the best jalebi as the thickness of jalebi, applied pressure while deposition and the motion of hand should be proper and accurate.

2) Due to its manual work, making jalebi in different shapes or designs is a difficult task.

3) Vigyan ashram has to feed 100+ students daily, so this machine will surely help our kitchen department to mass produce jalebi.

Objective of Group Assignement

Mechnaical Design

- Design a machine that includes mechanism + actuation + automation + application

- Build the mechanical parts and operate it manually

- Document the group project and your individual contribution

Machine Design

- Actuate and automate your machine

- Document the group project and your individual contribution

Hero Shots

Final Video

Mechanism Selection

We had a strong brain storming on design selection, what kind of mechnism should we use for our machine in order to get desired output.

And after going through different mechism we had came to this mechanism, which is similar like working of 3D Printer

Roles and Responsibility

As we are total 2 students from Fab Lab Vigyan Ashram, so we mutually did all the work starting from 3D Modelling, Fabrication, assembly, and electronics work.

Mechnical Design

3D Modelling

Componenet used

Mechanical Components

1) Aluminium Extrusion channels

Extruded aluminum channels are also used in framing, creating reveals and for protecting faces or edges of millwork. Our extruded aluminum channels enhance any surface they are applied to and are easy to maintain, clean, and polish. They are the perfect addition to any design project.

2) Extrusion v Slots joint

The L shape hidden corner bracket is used for setting up a right angle connection of the two aluminum profiles, inserting the two ends of the L bracket into the groove of the profile, and tightening the set screw to fix the two profiles. Built-in connection with beautiful and simple features. Widely used for building industrial aluminum frame structures, 3D printers, CNC routers, laser engravers, and robotics projects.

3) Bearing Wheels

This spindle bearing has a special structure with large load capacity, high smoothness, high reliability and good performance. The pulleys with gear have a special antiback function. This gear pulley is suitable for the ordinary printers, very useful and practical. Suitable for most printers on the market, with a wide range of applications and usually used in advertising copiers, printing machines and other industries.

4) V Slot Gantry Plate

5) Aluminium Pulley

This is GT2 Aluminium Pulley 40 Teeth 5mm Bore 6mm Width. It consists of 40 teeth and 5mm inner bore. The Pulley works great with a GT2 6mm wide timing belt. Two set screws can be used to attach it firmly to any 5mm diameter shaft. This aluminium pulley constructed with high quality aluminium material makes it lustrous and light weighted displaying its high quality strength and durability.

6) Timing Belt

Highest quality precision 10M GT2 Width 6mm Black Open Timing Belt For 3D Printer. Made from NEOPRENE Synthetic Rubber reinforced with fiberglass cords for superior strength. Neoprene an oil-resistant substitute for natural rubber, was invented by DuPont scientists on April 17, 1930.

7)M5 Bolts

Electronics

Arduino Uno

The Arduino Uno is an open-source microcontroller board based on the Microchip ATmega328P microcontroller and developed by Arduino.cc and initially released in 2010. The board is equipped with sets of digital and analog input/output pins that may be interfaced to various expansion boards and other circuits.

CNC Shield

The CNC Shield V3.0 allows you to build a engraving machine, 3D printer, mini CNC and other similar devices using your Arduino. It is designed as a shield and can plug on top of an Arduino requiring no external connections and wiring. There are 4 slots on the board for plugging in stepper motor drive module which can drive 1 stepper motor each. Controlling each step stepper motor requires only two IO pins on the Arduino. Just insert this Arduino CNC Shield V3.0 onto an Arduino UNO, and install the GRBL firmware, you can then quickly build a DIY CNC engraving machine.

Motor Driver

A4988 Module is a Smaller and Cheapest breakout board for Allegro's A4988 Stepper Motor Driver. It has many advantages including adjustable current limiting, over temperature and over current protection. It has five different stepping resolution and has a wide operating voltage range from 8 volt to 35 volts and can deliver current upto 1 Amp per phase.

Nema 17 Stepper Motor

The stepper motors move in precisely repeatable steps, hence they are the motors of choice for the machines requiring precise position control. The NEMA17 4.8 kg-cm Stepper Motor can provide 4.8 kg-cm of torque at 2.5A current per phase.The motors position can be commanded to move or hold at one position with the help of Stepper Motor Drivers. The NEMA17 4.8 kg-cm Stepper Motor provides excellent response to starting, stopping and reversing pulses from stepper motor driver.

Fabrication

3D Printed Parts

Laser Cutting Parts

Assembly Process

1) Chassis fitting

Used Aluminium extrusion channels to make the basic chassis structure of the machine, We had these channels in Fab’s inventory, we did some machining work in order to get required sizes of aluminium channels.

2) Gantry Plate mounting

For Smooth motion of the X & Y axis we used a gantry pate with roller wheels mounted on it. This allows us to achieve smooth and linear flow motion along x & y axis.

3) Motor fitting

We used 2 stepper motors for Y-axis motion as the axis has to carry a high amount of load. We connect those stepper motors through corner joint clips. and for the x-axis motor mounting, we added an acrylic plate extension.