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well. So in this trial a constant speed of 125 SFM is tried throughout the process. In the final stages of the pocket a very high speed of 200 SFM is intended to try in this process.

The lessons learned from the earlier trials proved that by increasing the speed could help in removing the taper very easily rather than reducing the speed. Unlike other trials the feed is reduced, and is maintained the same throughout the process in this trial as 8 thousandths. This is intended to make the process standardize.

As the pocket/part to be worked is a bigger size and the material to be worked is also a tougher grade. The number of insert checks has been increased from 2 to 3 times for each and every pass. This could help us to improve the consistency and could also help us to make the part production more standardized.

4.6.1 Results

The trial 3 results were very impressive as the time taken as per the simulation to complete one pass is about 12 minutes and the actual time taken was about 15 minutes. This trial was a very good proof about the working of the new cutting path method. The part was made as per the program and a lot of repass was avoided by this new cutting method. This method and parameters proved that it could work with tougher grade materials also. The insert check of 3 times in each cycle was helpful to make the inserts work better. After each trial the insert condition was studied and the wear was found normal which showed that the amount of stress given to the insert is minimized than the earlier conventional way.

4.7 Trial 4

This is the final trial in the cycle time reduction and process optimization in the cell for this process. This trial is again a check for consistency in the new process so that all the programs of different part sizes and material types can be changed. Due to the high mix, low volume environment there is variation in cycle times in the pocket turning operation every time.

This trial was planned to get an exact idea of the time saving and the process improvement done in the process. There are two machines in which the pocket turning operation can be done in the cell. So in one of the machines a production part is made and in the other machine the new process is tried for consistency in a scrap part of the same size and material as that of the production part. This could help us to gain confidence among the workers in the new pocket turning process.

The depth of cut is maintained the same as 15 thousandths in the interrupted cut and 33 thousandths before the interrupted cut process, and 4 passes of 10 thousandths depth of cut with a final finish pass. The production part is run at the conventional cutting parameters of 55 thousandths dept of cut per side and without any insert check in the middle of the process. The cutting speed is maintained the same as 120 SFM, but where as in the new process the cutting speed is maintained at 125 SFM and during the final shaping process the speed is maintained at 140 SFM.

This higher speed as discussed above would help to remove the taper and complete the part with th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。