All Geared Lathe Machine

All Geared Lathe Machine
All Geared Lathe Machine

Sunday 19 November 2017

Lathe Machine Carriage

Understanding Lathe Machine Carriage

Carriage is located between the head stock and tail stock on the lathe bed guide ways. It can be moved along the bed either towards or away from the head stock. It has several parts to support, move and control the cutting tool. The parts of the carriage are:


a) Saddle
b) Apron
c) Cross-slide
d) Compound rest
e) Compound slide
f) Tool post

Saddle:

It is an “H” shaped casting. It connects the pair of bed guide ways like a bridge. It fits over the bed and slides along the bed between head stock and tail stock. The saddle or the entire carriage can be moved by providing hand feed or automatic feed.



Cross slide:

Cross-slide is situated on the saddle and slides on the dovetail guide ways at right angles to the bed guide ways. It carries compound rest, compound slide and tool post. Cross slide hand wheel is rotated to move it at right angles to the lathe axis. It can also be power driven. The cross slide hand wheel is graduated on its rim to enable to give known amount of feed as accurate as 0.05mm.



Compound rest:

Compound rest is a part which connects cross slide and compound slide. It is mounted on the cross-slide by tongue and groove joint. It has a circular base on which angular graduations are marked. The compound rest can be swiveled to the required angle while turning tapers. A top slide known as compound slide is attached to the compound rest by dove tail joint. The tool post is situated on the compound slide.



Tool post:

This is located on top of the compound slide. It is used to hold the tools rigidly. Tools are selected according to the type of operation and mounted on the tool post and adjusted to a convenient working position completed in a shorter time because the required tools are preset.


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Sunday 12 November 2017

Lathe Machine Maintenance & Safety

Maintenance & Safety

The primary objective of the maintenance is to ensure the machine tools, instruments, tools and accessories in good working condition. It is also necessary to ensure safety to both the machine tools and the operator. The accuracy and efficiency of the lathe machine or any machine tools and the instruments are also to be maintained properly. By performing maintenance, we can avoid accidents inside the workshop and increase the production capacity.


Here are the few important and critical points to ensure General & Mechanical Safety:

1. Protect your eyes: wear safety glasses.
2. Make sure your work area is free from chips, coolant & air-hoses or anything that can get in your way and cause you slip or fall.
3. Make sure that cutting tools and work holding equipment are tight before running the spindle and slide.
4. All maintenance and repair work should be done with power-off.
5. Check grease under the bearing covers after every fortnight.
6. Fill the Oil Cups daily and at the mid of the shift.
7. It is critical that you make sure that there is oil in the Head Stock & Feed Box.
8. Always oil your machine before and after use. Do not leave metal chips and cutting fluid on the guide-ways.
9. Keep the machine clean and away the tools, gauges from getting damaged.
10. Save the slide ways and unpainted surfaces from rust.


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