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Show TH PRINCIPLES‘O SCIENTIFI MANAGEMEN 5 adoption of task management the output, with the same number o He said that h men and machines, could be more than doubled believed that an false, and instea such statement was mere boasting, absolutel of inspiring him with confidence, he was dis He gusted that any one should make such an impudent claim however, readily assented to the proposition that he should selec any one of the machines whose output he considered as representin the average of the shop, and that we should then demonstrate o this machine that through scientific methods its output could b more than doubled " The machine selected by him fairly represented the work of th It has been run for ten or twelve years past by a first-clas shop mechanic who was more than equal in his ability to the averag In a shop of this sort, in whic workmen in the establishment similar machines are made over and over again, the work is necessarily greatly subdivided, so that no one man works upon more tha A carefu a comparatively small number of parts during the year record was therefore made, in the presence of both parties, of th time actually taken in finishing each of the parts which this ma The total time required by him to finish each piece worked upon as well as the exact speeds and feeds which he took, were noted and a record was kept of the time which he took in setting the wor in the machine and removing it. After obtaining in this way statement of what represented a fair average of the work done i the shop, we applied to this one machine the principles of scientifi management By means of four quite elaborate slide-rules, which have been espe cially mad for the purpose of determinin the all-roun capacit of metal-cutting machines, a careful analysis was made of ever element of this machine in its relation to the work in hand It pulling power at its various speeds, its feeding capacity, and it proper speeds were determined by means of the slide-rules, an changes were then made in the countershaft and driving pulleys s as to run it at its proper speed Tools, made of high-speed steel and of the proper shapes, were properly dressed, treated, and ground (It should be understood, however, that in this case the high-spee steel which had heretofore been in general use in the shop was als used in our demonstration. A large special slide-rule was the made, by means of which the exact speeds and feeds were indicate at which each kind of work could be done in the shortest possibl time in this particular lathe the workma After preparin in this wa should work according to the new method so tha one afte |
