The parts which go to make up the finished machines come from the shop and after inspection are ready to be put together. Men who work at a bench in the assembling room or on the erecting floor fasten these parts together.
Assembling Work
Examples of heavy work are found in the assembling of locomotives, stationary and marine engines, mining and pumping machinery, printing presses, rolling mills, and sugar machinery; of medium work in the assembling of gas and gasoline engines, farm machinery, automobiles, and trucks; of light work in the assembling of sewing machines, shoe machinery, cream separators, and typewriters.
Machinists who assemble medium and light machinery receive the parts from the stock room after they have been inspected for accuracy and finish, and bolt them together. Frequently mechanical means are used to carry the parts to the assembler, who bolts them in place on the frame of the machine. This is common in automobile factories.
From the assembling room the machines go to be tested or to be painted and prepared for shipment.
In contract work in job shops the routine described is not usually followed, and the work is performed by all-around men who take the place of the assemblers.
Erecting Work
Machinists who work as erectors usually fit the parts together, bolt them solidly, then test the machine for alignment. Shafting is fitted to bearings and sliding surfaces brought into contact by scraping with steel scrapers. Oil grooves are cut in bearing surfaces and all accessory parts fitted. Then in most cases the machine is taken down for shipment, and after reaching its destination is erected again on permanent foundations. Traveling machinists are frequently sent out from the shop to do this work in the field.
Tools
Assemblers and erectors use a variety of wrenches, hammers, and other tools. They are often provided with cranes and hoists for all heavy lifting. In the field they may have to devise special means of moving heavy machinery.