Manufacturing Technology: Unit II: Turning Machines
semi-automatic and automatic lathes
Turning Machines - Manufacturing Technology
In an ordinary centre lathe, changing and setting of tools consume more time.
SEMI-AUTOMATIC AND AUTOMATIC LATHES In an ordinary centre lathe, changing and setting of tools consume more time. Also, only one tool can be normally used but sometimes, the square tool post with four tools can be used. Hence, the rate of production will be low. Ultimately, the cost of production is also increased. So, the centre lathe is modified into some special lathes to improve the production rate which is called special purpose lathes. The various special purpose lathes are as follows: 1. Semi-automatic lathes and 2. Automatic lathes. In semi-automatic lathes, the required tools are preset. More than one tool can be used at a time to perform the specific task. It reduces the tool-changing time, loading and unloading time and it increases the rate of production. Hence, these semi-automatic and automatic lathes are used in mass production. In semi-automatic lathes, all machining operations are automatically performed. But the loading and unloading the job, bringing the tools in correct positions, coolant on or off and selection of spindle speeds are manually performed.
Manufacturing Technology: Unit II: Turning Machines : Tag: : Turning Machines - Manufacturing Technology - semi-automatic and automatic lathes
Manufacturing Technology: Unit II: Turning Machines
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Manufacturing Technology
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