Machine tool mechanical transmission system

M1432A universal cylindrical grinder movement is one of the various components by mechanical transmission and hydraulic transmission device combination. In the machine tool, in addition to the vertical reciprocating motion workbench, grinding wheel rack fast in a cutting feed and automatic cycle, the tailstock sleeve top retracted, grinding wheel rack leadscrew nut gap elimination system and manual interlock are realized by the hydraulic transmission with mechanical drive, the movement is achieved by mechanical transmission. As shown in figure 3 - 47 is universal cylindrical grinder M1432A type shown in the mechanical transmission system. Cylindrical grinding wheel of the transmission chain of grinding wheel spindle motion is by the grinding wheel motor ( 1440 r / min, 4千瓦) Through four V with a direct drive, the speed of the grinding wheel spindle to achieve high speed of 1670 r/min. Dial workpiece head frame, Drive the artifacts) The transmission chain of workpiece heads the movement of the dial is by two-speed motor ( 700/1 350 r / min, 0。 55/0. 1千瓦) , driven by the v-belt pulley cone and two stage V belt transmission, the head of dial or chuck drive artifact, circular motion. Within the circle of abrasive grinding wheel spindle by inside the transmission chain in circular grinding wheel motor ( 2840 r / min, 1。 1千瓦) The belt drive directly. Replace the belt wheel can make the inner circle grinding wheel spindle are two kinds of speed ( 10 000 r/min and 15 000 r/min) 。 In circular grinding tool is installed on the bracket, in order to ensure the safety of the work, within the circle of grinding wheel motor start and location of circular grinding tool support and interlock function. Only when the stent turn to working position, motor can start. At this time, the grinding wheel rack fast in a lever on the in situ automatically locked, can't move quickly. Of table manually adjust the machine tools and grinding of ladder shaft drive transmission chain steps, workbench can also be driven by the handwheel A, as shown in figure 3 - 47. In order to avoid the table when longitudinal motion drive wheel A rapid rotation operators, bruised with the interlock oil cylinders. Shaft Ⅵ mutual lock cylinder and hydraulic systems, while the oil pressure on the driven shaft Ⅵ workbench duplex gear moving, make gear z18 and z72 release. Therefore, hydraulic table rotates the handwheel is not A longitudinal motion. When workbench without hydraulic transmission, interlock on the oil cylinder cavity oil pool, inside the cylinder under the action of the spring, 18/72 to make gears meshing transmission, turn the handwheel A, after 15/72 and 32 18/72 gears and gear rack, can realize the workbench manual longitudinal linear movement. Wagen and transverse feed movement of grinding wheel frame transmission chain transverse feed movement, can shake hand wheel to achieve B, as shown in figure 3 - Shown in 47, can also be driven by feeding the piston of hydraulic cylinder, automatic feed implementation cycle. Horizontal manual coarse feed and diligence to feed points, coarse feed, will handle E is pushed forward, turn the handwheel B by the gear pair 50/50 and 44/88, leadscrew grinding wheel rack for transverse coarse feed movement, turn the handwheel B 1 week, grinding wheel rack lateral movement 2 mm, the handwheel on the dial D B is divided into 200, the case of each feeding to 0. 01 mm: fine feed, E to pull the lever to its graphical position, the gear pair meshing transmission 20/80 and 44/88, the grinding wheel rack for transverse feed, turn the handwheel B 1 week, grinding wheel rack lateral movement 0. Per feeding on 5 mm, dial 0. 0025mm。 Cheng is grinding method. Grinding a number of artifacts, in order to simplify the operation and save time, usually in a try after the first to reach the requirements of the workpiece diameter grinding, adjust the position of the stop F on the dial to make it reach needed in traverse grinding for diameter, as it happens and fixed hood and the positioning of the claw touching before bed. Therefore, only when the grinding subsequent workpiece shaking traverse the handwheel (for Or start the hydraulic automatic feed) To touch on the positioning claw, stop F, stop feeding ( Or hydraulic automatic stop feeding) , it can achieve the required grinding diameter, the process is called cheng is grinding. Grinding wheel wear adjustment method. After the grinding wheel wear or dressing, due to stop F control workpiece diameter bigger, at this moment, must adjust grinding wheel rack travel destination location, also is to adjust the dial the position of the stop F D. Adjustment method is: pull out the knob C, make it with the pin on the handwheel B release, turn the knob clockwise C, driven by the gear pair 48/50 gear rotate z12, z12 internal gear with dial D z110 mesh, then make the dial D counterclockwise rotation. Should dial D is the number of turns, according to the grinding wheel diameter to decrease the size of workpiece caused by variation. After the adjustment is in order to push the knob C of pin hole of wheel B on the pin of the knob C and handwheel B into a whole.