guru nanak industries pvt. ltd

8/12/2019 Guru Nanak Industries Pvt. Ltd

1/20

COMPANY PROFILE

GURU NANAK INDUSTRIES PVT. LTD is a well established company since 1980manufacturing machinery for Rice Shelling & Agricultural implements (Harvesters Combine,

Rotavators & Reapers etc.) (Formerly known as GURU NANAK MECHANICAL WORKS).

It is a highly professionally managed company under the able guidance of highly experienced

and dynamic Board of Directors consisting of S. Gurnam Singh and S. Surinder Singh. They

are assisted by team of Professionals i.e. Engineers, Management Graduates, I.T.

Professionals and Chartered Accountants. The Company has satisfactory supplied Machinery

in all over India and abroad. Their Machinery is being branded as best Machinery being

manufactured in North India. Their Machinery has been used by thousands of Rice Millers

well satisfied Customers.

Company mission is to provide quality products at competitive prices to our venerated

customers, thereby enhancing their satisfaction. At GNI, their commitment to values precedes

everything else. Company ensu res the product delivery is in line with the customers

requirements.

Superb Quality.

Timely Delivery.

Enhance productivity and competitiveness in manufacturing.

Upgrade quality and technology standards.

Interact with customers and users.


2/20

The company covers whole India with their Dealer network. Their Dealers are available in

North, West, and Central & South India Region. Combine is sold to Punjab, Haryana, Uttar

Pradesh, Madhya Pradesh, Maharashtra, Chhattisgarh & Andhra Pradesh and other South

Indian States. Self Harvester combine sale in India has put us in commanding position.

Tractor Driven Harvester combine is mainly sale North, South, and Central & West

India.Company exports self harvester combines to Kenya & Nepal. Every year Company

export approx 100 no. of harvester combines to Sri Lanka, Nepal & Kenya.

It is one of the most reputed manufacturers and exporters of superior quality Rice Shelling

Machineries and Harvesters Combines.

Being An ISO 9001: 2008 Certified Company, Company maintain highest quality standards.

All these developments are reflected in our product range.


3/20

PRODUCTS THAT COMPANY MAKE:-

AUTOMATIC RICE MILL PLANT

PADDY CLEANER
http://gnipltd.com/Gni-paddy-cleaner.htmlhttp://gnipltd.com/gni-rice-plant.htmlhttp://gnipltd.com/Gni-paddy-cleaner.htmlhttp://gnipltd.com/gni-rice-plant.html


4/20

PADDY DE HUSKER

PADDY DE HUSKER WITH BLOWER

PADDY SEPERATOR
http://gnipltd.com/gni-paddy-sperator-04.htmlhttp://gnipltd.com/Paddy-Husker-Vibro-with-Blower.htmlhttp://gnipltd.com/Gni-Paddy-De-Husker-04_07.htmlhttp://gnipltd.com/gni-paddy-sperator-04.htmlhttp://gnipltd.com/Paddy-Husker-Vibro-with-Blower.htmlhttp://gnipltd.com/Gni-Paddy-De-Husker-04_07.htmlhttp://gnipltd.com/gni-paddy-sperator-04.htmlhttp://gnipltd.com/Paddy-Husker-Vibro-with-Blower.htmlhttp://gnipltd.com/Gni-Paddy-De-Husker-04_07.html


5/20

PADDY DE STONER

VERTICAL RICE WHITNER

BLOWER
http://gnipltd.com/rice-mill-plant.htmlhttp://gnipltd.com/gni-Vertical-Rice-Whitner.htmlhttp://gnipltd.com/Gni-Paddy-DE-Stoner.htmlhttp://gnipltd.com/rice-mill-plant.htmlhttp://gnipltd.com/gni-Vertical-Rice-Whitner.htmlhttp://gnipltd.com/Gni-Paddy-DE-Stoner.htmlhttp://gnipltd.com/rice-mill-plant.htmlhttp://gnipltd.com/gni-Vertical-Rice-Whitner.htmlhttp://gnipltd.com/Gni-Paddy-DE-Stoner.html


6/20

MACHINES USED IN PLANT FOR VARIOUS OPERATIONS

For high quality products they use state of the art machinery, which includes

CNC TURRET PUNCH PRESS

Punch presses are large machines with either a 'C' type frame, or a 'portal' (bridge) type

frame. The C type has the hydraulic ram at the top foremost part, whereas the portal frame is

much akin to a complete circle with the ram being centered within the frame to stop frame

deflection or distortion.

C type presses have a bed plate which is used to lock the die bottom bolster. For locking the

die, T bolts are used and so this plate contain 'T - slots into which t- bolts are slid in. These

slots are placed diagonally and with a slot horizontal to the longer side of the plate, is the

general practice. These slots run up to a central hole made in the plate, the hole being large

enough to accommodate another bush with a hole, the hole being used for dropping the

punched part to the bottom of the press. The top of the tool butted against a vertical sliding

ram with a clamping system which accommodates only a particular diameter of a threaded

cylindrical member called the "shank" of the tool. The bottom portion of the tool is locked to

the bottom bed plate and the top portion of the tool is locked to the sliding ram. Top and

bottom portions of the tool are generally guided by suitable pillar and bush assemblies, (one

or two pairs ), which gives safety to the punching elements of the tool.


7/20


8/20

Frame type

Mechanism of delivering power to the ram (mechanical, electro-mechanical or

hydraulic)

Size of working area (e.g., 2500 x 1250 mm)

Single or multiple station

Force rating (for example, 20 tons)

The type of tool shop and its capacity (e.g., store revolving type, capacity 34 tool)

Speed or productivity (typically characterized by the speed of strokes with a step

movement of 25 and 1 mm)

Speed of movement without shock (speed-load displacement)

Maximum weight of work piece

Safety features

Power consumption

The type of software

Punch presses are usually referred to by their tonnage and table size. In a production

environment a 30 ton press is mostly the machine used today. The tonnage needed to cut and

form the material is well known, so sizing tooling for a specific job is a fairly straightforward

task. According to the requirement the tonnage may even go up to 2000 to 2500 ton presses.

Die set

Quick change tool system (left: Die, in the front: Punch, Split punch retainer, back: Tool

body, right: punch guide)

A die set consists of a set of punches and dies which, when pressed together, form a hole in awork piece (and may also deform the work piece in some desired manner). The punches and
http://en.wikipedia.org/wiki/File:Quick_Change_Tool_System.jpg


9/20

dies are removable, with the punch being attached to the ram during the punching process.

The ram moves up and down in a vertically linear motion, forcing the punch through the

material into the die.

CNC-controlled operation

To start a cycle, the CNC controller commands the drives to move the table along the X and

the Y axis to a desired position. Once in position, the control initiates the punching sequence

and pushes the ram from top dead center (TDC) to bottom dead center (BDC) through the

material plane. (The terms BDC and TDC go back to older presses with pneumatic or

hydraulic clutches. On today's machines BDC/TDC do not actually exist but are still used for

the bottom and top of a stroke.)

On its stroke from TDC to BDC, the punch enters the material, pushing it through the die,

obtaining the shape determined by the design of the punch and dies set. The piece of material

(slug) cut from the work piece is ejected through the die and bolsters plate and collected in a

scrap container. The return to TDC signals to the control to begin the next cycle.

The punch press is used for high volume production. Cycle times are often measured

milliseconds. Material yield is measured as a percentage of parts to waste per sheet

processed.

Hydraulic punch press

Hydraulic punch presses, which power the ram with a hydraulic cylinder rather than a

flywheel, and are either valve controlled or valve and feedback controlled. Valve controlled

machines usually allow a one stroke operation allowing the ram to stroke up and down whencommanded. Controlled feedback systems allow the ram to be proportionally controlled to

within fixed points as commanded. This allows greater control over the stroke of the ram, and

increases punching rates as the ram no longer has to complete the traditional full stroke up

and down but can operate within a very short window of stroke.


10/20

CNC MILLING MACHINE :

Milling is the machining process of using rotary cutters to remove material from a work

piece advancing (or feeding ) in a direction at an angle with the axis of the tool. It covers a

wide variety of different operations and machines, on scales from small individual parts to

large, heavy-duty gang milling operations. It is one of the most commonly used processes in

industry and machine shops today for machining parts to precise sizes and shapes.

Process

A profile of revolution ridges

Milling operates on the principle of rotary motion. A milling cutter is spun about an axis

while a work piece is advanced through it in such a way that the blades of the cutter are able

to shave chips of material with each pass. Milling processes are designed such that the cutter

makes many individual cuts on the material in a single run; this may be accomplished byusing a cutter with many teeth, spinning the cutter at high speed, or advancing the material

through the cutter slowly. Most often it is some combination of the three. The speed at which

the piece advances through the cutter is called feed rate , or just feed ; it is most often

measured in length of material per full revolution of the cutter.
http://en.wikipedia.org/wiki/File:Revolutionsandridges.pnghttp://gnipltd.com/images/DMC-63V.jpghttp://en.wikipedia.org/wiki/File:RevolutionridgesONLY.pnghttp://en.wikipedia.org/wiki/File:Revolutionsandridges.pnghttp://gnipltd.com/images/DMC-63V.jpghttp://en.wikipedia.org/wiki/File:RevolutionridgesONLY.pnghttp://en.wikipedia.org/wiki/File:Revolutionsandridges.pnghttp://gnipltd.com/images/DMC-63V.jpghttp://en.wikipedia.org/wiki/File:RevolutionridgesONLY.png


11/20

A diagram of revolution ridges, showing the position of the cutter for each revolution and

how it corresponds with the ridges

As material passes through the cutting area of a milling machine, the blades of the cutter take

swarfs of material at regular intervals. This non-continuous cutting operation means that no

surface cut by a milling machine will ever be completely smooth; at a very close level

(microscopic for very fine feed rates), it will always contain regular ridges. These ridges are

known as revolution marks , because rather than being caused by the individual teeth of the

cutter, they are caused by irregularities present in the cutter and milling machine; these

irregularities amount to the cutter being at effectively different heights above the work piece

at each point in its rotation. The height and occurrence of these ridges can be calculated from

the diameter of the cutter and the feed. These revolution ridges create the roughness

associated with surface finish.


12/20

LATHE MACHINE

A lathe is a machine tool which rotates the work piece on its axis to perform various

operations such as cutting, sanding, knurling, drilling, or deformation, facing, turning, with

tools that are applied to the work piece to create an object which has symmetry about an axis

of rotation.

Lathes are used in woodturning, metalworking, metal spinning, Thermal spraying parts

reclamation, and glass-working. Lathes can be used to shape pottery, the best-known design

being the potter's wheel. Most suitably equipped metalworking lathes can also be used to

produce most solids of revolution, plane surfaces and screw threads or helices. Ornamental

lathes can produce three-dimensional solids of incredible complexity. The material can be

held in place by either one or two centres, at least one of which can be moved horizontally to

accommodate varying material lengths. Other work-holding methods include clamping the

work about the axis of rotation using a chuck or collets, or to a faceplate, using clamps or

dogs.

Examples of objects that can be produced on a lathe include candlestick holders, gun barrels,cue sticks, table legs, bowls, baseball bats, musical instruments, crankshafts, and camshafts.
http://gnipltd.com/images/LOKESH%20TL-0X.jpghttp://gnipltd.com/images/LOKESH%20TL-0X.jpg


13/20


14/20

Plasma is an effective means of cutting thin and thick materials alike. Hand-held torches can

usually cut up to 50 mm thick steel plate, and stronger computer-controlled torches can cut

steel up to 150 mm thick. Since plasma cutters produce a very hot and very localized "cone"

to cut with, they are extremely useful for cutting sheet metal in curved or angled shapes.

Plasma cutting with a tilting head

Plasma cutting grew out of plasma welding in the 1960s, and emerged as a very productive

way to cut sheet metal and plate in the 1980s.It had the advantages over traditional "metal

against metal" cutting of producing no metal chips and giving accurate cuts, and produced a

cleaner edge than oxy-fuel cutting. Early plasma cutters were large, somewhat slow and

expensive and, therefore, tended to be dedicated to repeating cutting patterns in a "mass production" mode.

As with other machine tools, CNC (computer numerical control) technology was applied to

plasma cutting machines in the late 1980's into the 1990s, giving plasma cutting machines

greater flexibility to cut diverse shapes "on demand" based on a set of instructions that were

programmed into the machine's numerical control. These CNC plasma cutting machines

were, however, generally limited to cutting patterns and parts in flat sheets of steel, using

only two axes of motion (referred to as X Y cutting).
https://en.wikipedia.org/wiki/File:Plasma_tilting_head.jpg


15/20

GRINDING MACHINE

A grinding machine, often shortened to grinder, is a machine tool used for grinding, whichis a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on

the wheel's surface cuts small chips from the work piece via shear deformation.

Grinding is used to finish work pieces that must show high surface quality and high accuracy

of shape and dimension. As the accuracy in dimensions in grinding is on the order of

0.000025 mm, in most applications it tends to be a finishing operation and removes

comparatively little metal, about 0.25 to 0.50 mm depth. However, there are some roughing

applications in which grinding removes high volumes of metal quite rapidly. Thus, grinding

is a diverse field.

The grinding machine consists of a bed with a fixture to guide and hold the work piece, and a

power-driven grinding wheel spinning at the required speed. The speed is determined by the

wheels diameter and manufacturers rating. The user can control the grinding head to travel

across a fixed work piece, or the work piece can be moved while the grind head stays in a

fixed position.

Fine control of the grinding head or tables position is possible using a vernier calibrated

hand wheel, or using the features of numeric control.


16/20

Grinding machines remove material from the work piece by abrasion, which can generate

substantial amounts of heat. To cool the work piece so that it does not overheat and go

outside its tolerance, grinding machines incorporate a coolant. The coolant also benefits the

machinist as the heat generated may cause burns. In high-precision grinding machines (most

cylindrical and surface grinders), the final grinding stages are usually set up so that they

remove about 200 nm per pass - this generates so little heat that even with no coolant, the

temperature rise is negligible.

WHITENING & POLISHING OF RICE

White rice is produced from brown rice by removing the bran layer and the germ. The bran

layer is removed from the kernel by applying friction to the grain surface either by rubbing

the grains against an abrasive surface or against each other. The amount of bran removed is

normally between 8-10% of the total paddy weight but this will vary according to the variety

and degree of whiteness required.

The process used to whiten brown rice can be classified as either abrasive or friction .


17/20

OLDER PROCESSES

ABRASIVE WHITENING

In this process the grain is whitened by the abrasive action of the rice kernel passing between

a moving abrasive surface and stationary screen. The hard rough surface is usually stone or

a carborundum type material. The abrasive process peels off the bran layers from the brown

rice and applies less pressure on the grain than a friction process and is therefore better suited

for long grain varieties. Abrasive polishers can be either vertical or horizontal in design. The

vertical cone whitener is very common in many Asian countries.

Abrasive laboratory whitener Older vertical cone whitener

FRICTION WHITENING

In the friction whitener the grain kernels are forced against each other and a metal screen by asteel-ribbed cylinder rotating inside a metal-plated cylinder. The frictional forces created

between individual rice grains and between the grains and the metal screen surface remove

the bran layer from the grain. Friction polishers are always horizontal in design and apply

more pressure on the grain than an abrasive whitener.


18/20

COMBINEING WHITNER & POLISHER

The whitening process applies pressure to the

grain, which generates heat and causes cracking

and breakage of some kernels. To reduce the

number of broken grains and the grain temperature

during the whitening process, rice is normally passed through two to four whitening and

polishing machines connected in series. Rice

temperatures should not exceed 43-44C during

any process. The arrangement of machines to

process the rice during rice whitening is dependent

on the physical characteristics rice grains. Proper

sequencing of the machines will help reduce the

amount of broken kernels during whitening and

polishing. The normal arrangement of whitening

and polishing long and short grain rice is as

follows. Short grain: Abrasive - Friction - Friction

Polishing Long grain: Abrasive - Abrasive -

Polishing

For mills that produce premium or export quality

rice, a mist polisher is employed to brush off
http://www.knowledgebank.irri.org/rkb/rice-milling/commercial-rice-milling-systems/mist-polisher.htmlhttp://www.knowledgebank.irri.org/rkb/rice-milling/commercial-rice-milling-systems/mist-polisher.html


19/20

remaining bran dust and to create a characteristic

gloss on the milled rice.

REMOVAL OF BRAN:- In both the abrasive and friction whitener, provisions are madefor a jet stream of air through the cylinder and portholes to cool the grain, and blow off fine

bran. This minimizes breakage and improves efficiency of subsequent steps in the milling

process.

ADJUSTING PRESSURE IN WHITENERS

Adjustment of the pressure in whiteners and polishers is crucial in meeting the objectives of

milling. A certain pressure is required to peel off the bran: if the pressure is too low, only

energy is converted into heat but no bran is removed. Conversely, too much pressure results

in generation of broken rice. Pressure adjustment is often based on a judgment call of the

operator. Many advanced models however contain an ampere meter (that shows the electric

load on the motor drive) that indicates the pressure inside the mill. In friction-type whiteners,

pressure is regulated by changing the flow rate of grain through the mill. Flow Rate is

adjusted by a weight that puts pressure against the output valve.

MAINTENANCE

Abrasive stones should be resurfaced regularly to maintain high quality milled rice output.

Excessive use of jet air stream can result in a decrease of moisture of milled rice and result in

higher grain breakage.


20/20

NEW PROCESS FOR RICE WHITENING

VERTICAL RICE WHITENER

This is the modified Rice whitener made with the simple mechanism and it is easy to

operate. It has multiple applications. The Vertical Rice Whitener produces white rice to

perfection .It is designed to fulfil the the highest needs in gentle whitening. It is the best tool

to obtain best surface treatment at highest whole grain yield .The machine can be operated

and maintained with minimum effort.Due to optimized sanitation concept ,cleaning time is

almost eliminated .This machine is versatile enough to be adapted to various ather products

such as wheat ,barley & peas.
http://gnipltd.com/gni-Vertical-Rice-Whitner.html

guru nanak industries pvt. ltd

Documents