All Geared Lathe Machine

All Geared Lathe Machine
All Geared Lathe Machine

Friday, 15 November 2019

Lathe Machine Construction


CONSTRUCTION OF LATHE MACHINE


A simple lathe comprises of a bed made of grey cast iron on which headstock, tailstock, carriage and other components of lathe are mounted. The major parts of lathe machine are given as under:

The main parts of the lathe machine are:

1. Bed
2. Headstock
3. Tailstock
4. Carriage
5. Feed mechanism
6. Thread cutting mechanism

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Thursday, 17 October 2019

Lathe Machine

BASIC CONCEPT OF LATHE MACHINE

Lathe is one of the most versatile and widely used machine tools all over the world. It is commonly known as the mother of all other machine tool.
LATHE MACHINE
The main function of a lathe is to remove metal from a job to give it the required shape and size. The job is securely and rigidly held in the chuck or in between centers on the lathe machine and then turn it against a single point cutting tool which will remove metal from the job in the form of chips. Pictured attached shows the working principle of lathe.


WORKING PRINCIPAL OF LATHE MACHINE
An engine lathe is the most basic and simplest form of the lathe. It derives its name from the early lathes, which obtained their power from engines.

Besides the simple turning operation as described above, lathe can be used to carry out other operations also, such as drilling, reaming, boring, taper turning, knurling, screw thread cutting, grinding etc.

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Sunday, 7 July 2019

THREAD CUTTING ON LATHE

THREAD CUTTING MECHANISM ON 

LATHE MACHINE


THREAD CUTTING


Thread of any pitch, shape and size can be cut on a Preet lathe using single point cutting tool. Thread cutting is operation of producing a helical groove on spindle shape such as V, square or power threads on a cylindrical surface. The job is held in between centers or in a chuck and the cutting tool is held on tool post.

The cutting tool must travel a distance equal to the pitch (in mm) as the work piece completes a revolution. The definite relative rotary and linear motion between job and cutting tool is achieved by locking or engaging a carriage motion with lead screw and nut mechanism and fixing a gear ratio between head stock spindle and lead screw. To make or cut threads, the cutting tool is brought to the start of job and a small depth of cut is given to cutting tool using cross slide.

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Sunday, 5 May 2019

Basic Understanding: Taper Turning Attachment

Taper Turning Attachment Method

Preet Lathe Udyog offers Taper Turning Attachment as standalone as well as with the Lathe Machine. This method is commonly employed for generating external tapers only.

TAPER TURNING ATTACHMENT - PREET LATHE UDYOG

In this method, the taper turning attachment is bolted back of the lathe machine. It has guide bar which may be set at any desired angle or taper. As the carriage moves along the bed length aside over bar causes the tool to move in and out according to setting of the bar. The taper setting on the bar is duplicated on the job or work. The merit of this method is that the lathe centers are kept in alignment.

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Sunday, 21 April 2019

Basic Understanding: Lathe Operations Part II

LATHE OPERATIONS PART II

Further moving to our understanding lathe machine series, there are numerous operations that are performed on the machine to provide shape and size. Here now, we will describe the different lathe machine working which are performed by holding the work by a chuck or a face plate:

Lathe Machine Operations


1. Undercutting
2. Parting-off
3. Internal thread cutting
4. Drilling
5. Reaming
6. Boring
7. Counter boring
8. Taper boring
9. Tapping

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Thursday, 28 February 2019

Basic Understanding: Lathe Operations Part I

LATHE OPERATIONS PART I

To continue our Basic Understanding of the Lathe Machines. We move on to the various operations that are performed in a lathe and the job is being supported and driven by anyone of the following methods:


Lathe Operation


1. Job is held and driven by chuck with the other end supported on the tail stock center.

2. Job is held between centers and driven by carriers and catch plates.

3. Job is held on a mandrel, which is supported between centers and driven by carriers and catch plates.

4. Job is held and driven by a chuck or a face plate or an angle plate.

The above methods for holding the job can be classified under two headings namely job held between centers and job held by a chuck or any other fixture.

The operations performed in a lathe can be understood by three major categories and here we will try to understand the first category and other two will follow:

Operations, which can be performed in a lathe either by holding the work piece between centers or by a chuck are:

LATHE MACHINE OPERATIONS:
  • Straight Turning
  • Shoulder Turning
  • Chamfering
  • Eccentric Turning
  • Thread Cutting
  • Facing
  • Forming
  • Filing
  • Polishing
  • Grooving
  • Knurling
  • Spinning
  • Spring Winding
  • Taper Turning

Preet Lathe Udyog ensures to meet the quality tolerances required in the lathe machines that results in cost effectiveness and accuracy.

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Wednesday, 10 October 2018

Basic Understanding: Accuracy of Lathe Machine - MICRONS



Lathe Machine Accuracy-I


Lathe is one of the most versatile and widely used machine tools all over the world. It is commonly known as the mother of all other machine tool. The main function of a lathe is to remove metal from a job to give it the required shape and size. The job is securely and rigidly held in the chuck or in between centers on the lathe machine and then turn it against a single point cutting tool which will remove metal from the job in the form of chips.

Now the most important point to be noticed in the machine is the accuracy of the machine which is observed in Microns(ยต(a unit of length where 1 millimeter is equal to 1000 microns or 0.001mm) and just for the reference a human hair on an average is 50 microns thick i.e. 0.05mm

Below are the examples of lathe machine accuracy test although this accuracy does depends upon the length of center to center distance. This topic requires a number of articles which we will try to cover most of them.


For any inquiry about lathe machine price, please contact us at:
www.preetlathe.com
www.lathemachineprice.com

Wednesday, 19 September 2018

Basic Understanding: Chamfer, Facing & Turning on Lathe Machine

Chamfer, Facing & Turning on Lathe Machine


There are various operations performed on the lathe machine apart than plain turning of the metal piece. These are Chamfer, facing, Turning. Grooving, Forming, Knurling, Drilling, Taper Turning and other operations are performed on the single lathe machine. Few of the operations are discussed here below:

1. Chamfering: Chamfering is the operation of beveling the extreme end of the work piece. The form tool used for taper turning may be used for this purpose. Chamfering is an essential operation after thread cutting so that the nut may pass freely on the threaded work piece.

CHAMFERING
2. Facing: Facing is the operation of machining the ends of a piece of work to produce flat surface square with the axis. The operation involves feeding the tool perpendicular to the axis of rotation of the work.

FACING
3. Turning: Turning in a lathe is to remove excess material from the work piece to produce a cylindrical surface of required shape and size.

TURNING
Preet Lathe Udyog ensures to meet the quality tolerances required in the lathe machines that results in cost effectiveness and accuracy.

Visit us for more details and pricing of lathe machine at:

Saturday, 23 June 2018

Basic Understanding: Lathe Machine Identifications

Basic Understanding: Lathe Machine Identifications


A Lathe Machine is manufactured from grey cast iron which includes Lathe Machine bed itself, Headstock, Tailstock, Slides & other most of the parts. The main reason it is made from grey cast iron because it can absorbs vibration better than steel and convert it in heat. Also, grey cast iron can be machined easily.


Bed: The bed of the lathe machine is the base of the lathe machine where all other parts of the machine are mounted. Preet Lathe Machine bed is made from graded grey cast iron. Machine bed is decided as per length of the turning required, which is called Admit Between Centre or Distance Between Centre.

Head Stock: The outer surface of the head stock is made from cast iron and it comprises of alloy spindle, gears and bearings. There are two types of headstocks that comes along with the machines i.e. Cone Pulley Head Structure & All Geared Head Structure.  Please go through link for more detail on Head Structure:

Tail Stock: It is basically for giving support to the circular jobs being turned on centres. Dead Centre, Live Centre & Rotating Centre are used for these kinds of jobs where Tail Stock Spindle Centre is manufactured with Morse Taper as per job requirement.

Carriage: Carriage is mounted on the guide ways of the lathe machine and it can move in a direction parallel to the spindle axis. It comprises of important parts like apron, cross slide, saddle, compound rest and tool post.

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