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entation problem which was felt during this process to remove the taper was that in the first pass the tool insert has to go in one direction and for the second pass the insert has to move in the opposite direction with the currently used tool holder it was not able to perform this kind of work. Every time the tool holder position has to be changed to perform this action. As changing the tool holder direction for each pass would cost more time and is a much intensive process than earlier so the idea was put on hold. Discussions were held to buy a tool post which can move in both directions to meet the requirement. At the same time new ways to solve the problem was also tried to solve the problem in a fast way.

4.4.3 Solution 2

As the first idea required investment to solve the problem. An improved version of the same plan was executed in a different way in this solution. The problem was restudied and was understood that it was clear that the inserts performance is not the same throughout the pocket length of 7 inches. With the earlier study it was found that the insert can perform well for about 3-4 inches. So in the second modification plan the tool insert is made to work for 3.5 inches i.e. the middle of the pocket and later the tool insert is checked if the insert has worn out then the insert can be changed and the insert can start its action back from the middle of the pocket. By this way we can avoid any extra pass in the pocket turning operation. The simple policy of divide and conquer can be implemented to solve the problem. A lot of time can be saved by making the process work correctly in the first time.

The initial idea of removing the front squaring as well the idea of checking the insert in the middle of the operation was clubbed together and further trials were planned.

4.5 Trial 2

With a lot of experience and understanding from the first trial the second trial was planned carefully. In the second trail the above cutting method was implemented. A scrap part was used for this trial, and a pocket was made in the same position and place as per the production part specifications.

The cutting parameters like depth of cut, speed, feed were also modified based on the results of trial 1. The depth of cut of 15 thousandths per side used in the first trial was performing good in the beginning so it is planned to increase the depth of cut from 15 thousandths per side to 33 thousandths per side before it touches the interrupted cut, and once the tool starts its action in the interrupted cut the depth of cut is maintained the same as 15 thousandths as there were poor results in the first trail in this area. The feed is maintained as 10 thousandths before it touches the interrupted cut and thereafter it is made to run at a reduced feed rate of 8 thousandths.

The cutting speed is maintained the same as in earlier trial as 120 SFM before it touches the interrupted cut, and during the interrupted cut process it is maintained at 100 SFM to improve and make the process under control, and once all the shaping is done in the pocket operation it is planned to run at higher speeds of 140 SFM. This high speed wou本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。