I. Copy the underlined words and word-combinations, translate them into Ukrainian and learn them.II. Write out the main Henry Maudslay and Joseph Clement’s inventions. 3) What should you know before using a lathe? What are some things you should do? - Wear appropriate safety glasses. - Ensure that lathe has a start/stop button within easy reach of the operator. - Follow job specifications for the speed, feed and depth of cut for materials being turned. Make sure all work runs true and centered. - Centre drill work deeply enough to provide support for the piece while it is turning. - Adjust tool and tool rest so that they are slightly above the centre of the work. - Use a lifting device to handle heavy chucks or work. Refer to Materials Handling for additional information. - Inspect chucks for wear or damage. Flying pieces can be very dangerous. - Remove chuck wrench immediately after adjusting chuck. - Use a barrier guard when operating the lathe in semi-automatic or automatic mode. - Guard all power transmission parts. - Remove all tools, measuring instruments and other objects from saddle or lathe bed before starting machine. - Ensure that the chip and coolant shields are in place. - Shut off the power supply to the motor before mounting or removing accessories. - Stop lathe before taking measurements of any kind. - Use a vacuum, brush or rake to remove cuttings only after the lathe has stopped moving. - Keep working surface clean of scraps, tools and materials. - Keep floor around lathe clean and free of oil and grease. What are some things you should avoid doing? - Do not wear gloves, rings, watches or loose clothing. Confine long hair. - Do not lean on machine. Stand erect; keep your face and eyes away from flying chips. - Do not place hands on work turning in the lathe. - Do not use calipers or gauges on a workpiece while machine is moving. - Do not make heavy cuts on long slender pieces because the work could bend and fly out of the lathe. - Do not leave lathe unattended while it is running.
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