Among the many milling machines, the X6132 is a typical model. Its drive system is mainly the main sports drive chain, feed motor drive chain and table fast moving transmission chain. The main movement of the milling machine is the end of the motor chain and the spindle, the task is through the main variable speed drive system to the motor movement to the spindle, so that access to different speed to meet the processing needs. Feed the drive chain and the table fast moving transmission chain drive, so that the machine to get X, Y and Z to the three directions of the work feed or rapid adjustment to move to meet the different processing needs. The picture shows the X6132 universal horizontal lift milling machine drive system, the figure number is the number of gear teeth.
1. The main movement of the milling machine
The rotary motion of the spindle is the main movement of the milling machine. The main end of the main drive chain is the main motor (shaft I), which is finally transmitted to the endpiece axis V (spindle) via the II-IV axis. By changing the main motor forward and reverse to change the direction of rotation of the spindle, the spindle braking by the multi-chip electromagnetic brake M to control.
2. milling machine feed movement
X6132 milling machine table can feed and move rapidly in three directions perpendicular to each other. The feed movement transmission chain head end for feeding motor, when the movement by the axial feed motion transmission chain to the VI axis X, the movement through the electromagnetic clutch M3 (YV4), M4 (YV5) and the end tooth clutch M5 different joint feed motion table to obtain the vertical, horizontal and vertical direction of the three. In the transmission line expression, there is a back mechanism, and the single slip gear of the z= 49 on the axle X has three different meshing positions (three positions of a, B and C in the figure). When the Z =49 single slip gear at position a, IX axis motion through the gear shaft to X; when in position B, IX axis movement of the gear shaft to X; when in position C, IX axis movement of the gear shaft to the curved back to X.
It can be seen that when the single slip gear Z =49 in the rolling gear mechanism is in three different meshing positions, three larger reduction ratios can be obtained.
From the above analysis, a rotating shaft VII, the two groups of triple sliding gear group, the IX level 9 axis speed different; axis IX 9 speeds, the curved transmission mechanism three z=40 gear on the output, each with 9 speeds when the Z function, =49 single slip gear meshing work for different positions, can make the z=49 gear shaft on X class 27 speed theory. But because of a group of two axis VII VIII triple sliding gear transmission group x3 =9 obtained 3 kinds of transmission ratio, three are repeated, therefore, the Z =49 X on the gear shaft only 21 actual speed. When connected to the electromagnetic clutch shaft M1, X can obtain 21 different speed, the electromagnetic clutch M3 (YV4), M4 (YV5) and the end tooth clutch M5 different joint, 21 different feed table to obtain the vertical and horizontal and vertical direction of the three, the feed movement direction the change of direction of rotation by the feed motor to achieve.
3. Workbench moves quickly
The rapid movement of the table is used to adjust the position of the table in the vertical, horizontal or vertical direction, respectively. The fast moving power source of the machine tool is still provided by the feed motor, but the movement between the shafts VI and X is driven by two sets of gears, directly to the shaft X via the clutch M2, X fast rotation. With the clutch M3, M4, M5, turn on the vertical, horizontal or vertical direction of the rapid adjustment movement. Quickly adjust the direction of movement through the motor to change the direction of rotation to achieve. The vertical and lateral rapid traverse speed is 2300 mm / min and the vertical speed is 770 mm / min. The direction of rapid movement is determined by the direction of rotation of the feed motor.