机电专业英语U6 Reading.pptx
ReadingMounting the Lathe to a BoardTask 1 As a mechanic, Tom Waters may experience the following situations. Match each situation with its corresponding picture. Discussing with his co-workers about some technical roblems. Demonstrating how to assemble a mini-lathe. Showing an intern student around the workshop. Keeping the tools clean and arranging them in the toolbox.DCBATask 2 The following things are what Tom usually does for installing a machine. Arrange them in the order of time and explain.a. Put on proper clothes and get tools ready.b. Fix the time when he would arrive.c. Receive a phone from the customer requiring him to install a newly-imported lathe.d. Assemble the machine and test it.e. Read the instructions about how the machine should be installed.Answer: 1c 2b 3a 4e 5dTask3 Before reading the passage, try to answer the questions about machine installation.1. How much do you know about a lathe? What is it used for in the machine manufacture?2. Do you know the classifications of a lathe? Discuss with your classmates.ReadingReading Mounting the lathe to a board (see Fig.1) is necessary because of the narrow base. This keeps the machine from tipping. We recommend mounting the lathe on a piece of pre-finished shelf material, which is readily available at most hardware stores. The machine can be secured to the board using screws of a certain specification with washers and nuts. Lengths should be 1-1/2“ for short bed lathes and 1-7/8 for long bed lathes. Rubber feet should be attached at each corner on the bottom of the mounting boards. They are also readily available in hardware stores. This arrangement gives the machines a stable platform for operation yet still allows for easy storage. Reading AReadingReading The rubber feet help minimize the noise and vibration from the motor. Mounting the tool directly to the workbench can cause Vibration of the bench itself, which acts as a “speaker” and actually amplifies the motor noise. Bench mounting also eliminates one of the best features of Sherline machinesthe ability to be easily put away for storage. The mill may be mounted in a similar manner on a 10 x 12 to 12 x 24“ prefinished shelf board with rubber feet using the screws to attach the mill to the board. ReadingReading REMEMBER: DO NOT LIFT YOUR MACHINE BY THE MOTOR! Carry the machine by lifting under the base or by the mounting board. To keep your Sherline tools clean, soft plastic dust covers are available. The lathe cover is P/N 4150 for the Model 4000/4100 and 4500/4530 short bed lathes and P/N 4151 for the Model 4400/4410 long bed lathe. A mill dust cover is available as P/N 5150 for 5000-series mills and P/N 5151 for 2000-series 8-direction mills.Task 4 Read the passage and match the actions on the left with their possible results on the right.mounting a lathe to a boardattaching rubber feetmounting a lathe directly to the workbenchlifting a machine by the motorputting on a dust coverreducing the noiseachieving stabilitykeeping the machine cleancausing the vibration of themachinedamaging the lathe 1. The lathe is designed with a narrow base so that it will be easily transported. 2. The lathe is suggested to be fixed on a piece of board to amplify the noise. 3. The pre-finished shelf material can be easily obtained because they are available in hardware stores. 4. The rubber feet are attached to the bottom of the board in order to keep the machine stable. Task 5 Read the passage again and decide whether the following statements are true (T) or false (F).F TF F 5. Workbench may act as a “speaker” to talk with the workers. 6. The machine can never be lifted by the motor. 7. The machine can be secured to the board by some screws. 8. The mill can be mounted to a board in a similar way of mounting the lathe. 9. The vibration of the workbench may produce great noise in the workshop. 10. The plastic covers are used to keep the machine clean.F TTTTTTask 6 Write out the words in Reading A according to their meanings in the right column. The first letter of each word has been given.s_ to make firm or tight; fastenm_ to fix something in position for usem_ to reduce to the smallest possible amount, extent, size, or degreea_ capable of being gotten; obtainablee_ to completely get rid of something that is unnecessary or unwantedl_ to direct or carry from a lower to a higher position; raisea_ to increase something in size or strengthv_ vibrating movement or sensationecureountinimizevailableliminateiftmplifyibrationTHANK YOU
