Horizontal Boring Machine

Horizontal Boring Machine

Preet Lathe has stepped up in the stream of machinery and looking forward to extend it more. We

have introduced PREET " Horizontal Boring Machine" with utmost feature and depending upon our same

technology to give the same output i.e. Accuracy with High Precision Engineering.

Here is first look of us as Horizontal Boring Machine Manufacturer.

Heavy Duty Lathe

Heavy Duty All Geared Lathe

Heavy Duty All Geared Lathe are famously known as Roll Turning Lathe because of their sizes, Big Bore & mainly Center Height. Heavy Duty Lathe Manufactured by Preet Lathe comes along with Taper Bed which means it gives more stability, least Vibration and Low RPM to cultivate Heavy Jobs.

In this video, machine has All Geared Headstock which gives an ease while changing the speed of the chuck or in other words to control the RPM. It had 18 different speeds, which in returns helps to choose the speed of the choice.

Thread Cutting on Lathe

Thread Cutting

Thread cutting on All Geared Lathe Machine is one of the most important operations performed in a lathe. The process of thread cutting is to produce a helical groove on a cylindrical surface by feeding the tool longitudinally.

Thread Cutting On All Geared Lathe

 1. The job is revolved between center or by a chuck. The longitudinal feed should be
equal to the pitch of the thread to be cut per revolution of the work piece.

2. The carriage should be moved longitudinally obtaining feed through the lead-screw
of the lathe.

3. A definite ratio between the longitudinal feed and rotation of the headstock spindle
should be found out. Suitable gears with required number of teeth should be mounted on the
spindle and the lead screw.

4. A proper thread cutting tool is selected according to the shape of the thread. It is
mounted on the tool post with its cutting edge at the lathe axis and perpendicular to the axis
of the work.

5. The position of the tumbler gears are adjusted according to the type of the thread

6. Suitable spindle speed is selected and it is obtained through back gears.

7. After the process of thread cutting is over, the thread is checked by suitable
gauges.

Taper Turning Attachment

Taper Turning Attachment in Lathe 

The advantage of this method is that long tapers can be machined & is offered by Preet Lathe . As power feed can be employed, the work is completed at a shorter time. 

Preet Lathe manufacturers taper attachment consists of a bracket which is attached to the rear end of the lathe bed. It supports a guide bar pivoted at the center. The bar having graduation in
degrees may be swiveled on either side of the zero graduation and set at the desired angle
to the lathe axis. A guide block is mounted on the guide bar and slides on it. The cross slide
is made free from its screw by removing the binder screw. The rear end of the cross slide
is tightened with the guide block by means of a bolt. When the longitudinal feed is engaged,
the tool mounted on the cross slide will follow the angular path as the guide block will slide
on the guide bar set at an angle of the lathe axis. The depth of cut is provided by the compound
slide which is set parallel to the cross-slide. All Geared Lathe Machine are offered with Taper Turning Attachment.

All Geared Lathe & Semi Geared Lathe

Difference in All Geared Lathe Machine & 

Semi Geared Lathe Machine

There is huge difference between All Geared Lathe & Semi Geared Lathe Machine. Buyer need to see the difference between both the machines, when they are looking to buy it. Below are the difference between them:

All Geared Lathe Machine

Semi Geared Lathe Machine

• Appearance: There is major difference in the appearance . After looking at the Head Stock, we can easily judge the machine whether it is All Geared Lathe or Semi Geared Lathe.
• Spindle Speeds: With the difference in the Head Stock, same applies to the speed of the All Geared Lathe Machine & Semi Geared Lathe. All Geared Lathe comes with 8, 12, 16, 18 or more spindle speeds while Semi Geared comes with 6 spindle speeds. 
• Operation: In Semi-Geared Lathe, the V Belts are required to be slipped from one pulley to another manually while in All Geared Lathe Machine, the belts are not required to be slipped. It is fully operational from Head Stock Front Levers. Machine Video is available at http://www.youtube.com/watch?v=8l6465yRlQ4  
• Head Stock Gears: There is high difference in the making of the head stock as there are number of gears are linked to each other in All Geared Lathe which is not in the Semi geared lathe. All the gears are induction hardened in the Head Stock whereas it may or may not be hardened gears in the Head Stock of Semi Geared Lathe.

These are the few differences in both the machine and at the same time there is a difference in the Lathe Machine Price as well. Due to the major difference in the making of the machine, there lies difference in the price
 as well. A buyer need to have a look at the above mentioned difference before they buy the machine for their industry. So depending upon the requirement, a buyer can chose the machine to buy.

Lathe Centers

Centers

Centers are useful in holding the work in a lathe between centers. The shank of a
center has Morse taper on it and the face is conical in shape. There are two types of centers
namely
(i) Live center
(ii) Dead center

Holding Work Piece Between the Centers

The live center is fitted on the headstock spindle and rotates with the work. The
center fitted on the tail stock spindle is called dead center. It is useful in supporting the other
end of the work. Centers are made of high carbon steel and hardened and then tempered.
So the tip of the centers are wear resistant. Different types of centers are available according
to the shape of the work and the operation to be performed. They are Ordinary center, Tipped center, Revolving center. Lathe Machine Manufacturer Preet Lathe Udyog offers Dead Center/Ordinary Center as standard accessories along with the Lathe Machine and other centers as optional.

Leadscrew

LEADSCREW APPLICATION

The LeadScrew is a long threaded shaft used as master screw. It is brought into operation during thread cutting to move the carriage to a calculated distance.

The LeadScrew is held by two bearings on the face of the bed. A gear is attached to the lead screw and it is called as gear on LeadScrew. A half nut lever is provided in the apron to engage half nuts with the LeadScrew.

LeadScrew & Half Nut

LeadScrew is used to move the carriage towards and away from the headstock during thread cutting. The direction of carriage movement depends upon the direction of rotation of the LeadScrew.When the LeadScrew is kept stationary, the half nuts are engaged with the LeadScrew to keep the carriage locked at the required position. Lathe Machine Manufacturers manufactures Lathe Machines  with LeadScrew which helps the operator during Thread Cutting, which is the main and the only work which can be obtained for LeadScrew. Preet Lathe Manufactures machines either 4 TPI or 2 TPI and if required they customize as well.

LATHE MACHINE MANUFACTURER

MANDREL USAGE FOR 

LATHE MACHINE MANUFACTURER

A previously drilled or bored workpiece is held on a mandrel to be driven in a lathe
and machined. There are centre holes provided on both faces of the mandrel. The live centre
and the dead centre fit into the centre holes. A carrier is attached at the left side of the
mandrel. The mandrel gets the drive either through a catch plate or a driving plate. The
workpiece rotates along with the mandrel. 

There are several types of mandrels and they are:

1. Plain mandrel 

2. Collar mandrel
3. Step mandrel 

4. Cone mandrel
5. Gang mandrel 

6. Expansion mandrel

A good Lathe Machine Manufacturer uses it to check the accuracy from Chuck to the Center, which is done by the usage of the Dial Gauge, it is in Microns. Preet Lathe Udyog makes sure, it is properly checked to attain the best accuracy

Conventional Lathe

LATHE MACHINE BASIC

Bed is mounted on the legs of the lathe which are bolted to the floor. It forms the base
of the machine. It is made of cast iron and its top surface is machined accurately and
precisely. Headstock of the lathe is located at the extreme left of the bed and the tailstock at
the right extreme. Carriage is positioned in between the headstock and tailstock and slides
on the bed guideways.

Lathe Machine Parts

The top of the bed has flat or ‘V’ shaped guideways. The tailstock and the carriage
slides on these guideways. Inverted ‘V’ shaped guideways are useful in better guide and
accurate alignment of saddle and tailstock. The metal burrs resulting from turning operation
automatically fall through. Flat bed guideways can be found in older machine tools. It is
useful in heavy machines handling large workpieces. But then the accuracy is not high. It is the Lathe Machine Manufacturer who should possess this knowledge to help hos client for the right machine.