Large vertical lathes can only be used in heavy machinery manufacturing industry, mining equipment manufacturing industry, steel industry, chemical equipment manufacturing industry, power equipment manufacturing industry, railway rolling stock manufacturing industry and metallurgical machinery manufacturing industry.
The machine tool consists of a frame composed of left and right columns, a top beam, and a workbench base to withstand the load during cutting. The crossbeam moves up and down along the column guide rail, and the crossbeam lifting motor and worm reduction box are placed on the top beam. The beam is clamped on the column by a disc spring through a lever, and the operating button for lifting the beam is on the hanging button station.
The gearbox is fastened to the rear of the workbench base. The main motor is connected to the gearbox by an elastic coupling. The gearbox is driven by a transmission cylinder to exchange gears to achieve sixteen speed changes. The speed change switch is at the hanging button station. superior. The workbench is started and braked directly by the main motor through the gearbox. The workbench only rotates forward, but can be moved forward and backward to facilitate work alignment.
The workbench is inlaid with zinc-aluminum-copper alloy wear-resistant guide rail plates, and pressure oil (2-4kg/cm2) is passed between the guide rails to improve the load-bearing capacity of the guide rails. Two 3182100 type double-row short cylindrical roller bearings are installed on the spindle of the workbench. The inner ring has a tapered hole to adjust the radial clearance to ensure that the spindle can work smoothly with high precision. The operation buttons for starting, braking and jogging of the workbench are on the hanging button station.
The two feed boxes on the left and right of a large vertical lathe are installed at both ends of the beam. The structures of the two feed boxes are the same. At the rear of the feed box, there is a tool holder feed motor and a rapid movement motor. , the working feed is converted into eighteen feed amounts by the conversion gear. The operating handle for changing the feed amount is in front of the feed box. An electromagnetic clutch is installed in the feed box to select the direction of feed or rapid movement of the tool rest. The tool holder movement direction selection switch and feed and fast movement operation buttons are on the hanging button station.