VMC850 CNC Vertical Machining Center

Double column VMC machines are widely used, but the improper operation will cause machine failure or other accidents. Only the correct operands can avoid damage to the machine tool and improve the working efficiency of the machine tool. Generally, the installation, use, maintenance, inspection, control, oil supply, or cleaning of the Double column VMC machine require personnel to operate. These personnel must have received comprehensive training before they can operate, and also need to operate by the operation manual.

The Double column VMC machine tool is marked with caution, warning, and danger words. Different marks have different meanings and different degrees of danger. For example, marking danger on it means that abnormal operation will cause injury to the operator or serious mechanical failure, so the operator must strictly abide by the marks on the machine tool to operate. Limited signs, such as the safety signs on the spindle head unit, remind the operator to close the door before or during operation and not to walk on the edge of the machine tool. If the rapidly rotating workpiece breaks and flies out of the machine tool, it will cause serious personal injury. During operation, it is necessary to prevent electric shock and electrical accidents caused by the high voltage in the main electrical cabinet, control panel, transformer, motor, terminal box, or operation panel and its area. At the same time, it is also important not to touch the switch of the machine tool with wet hands to prevent electric shock.

It needs to be checked once a quarter to prevent the circuit from aging or some machine tool function errors, to prevent possible accidents, and to control the occurrence of accidents from the source. At the same time, a solid workbench should be prepared around the machine tool, and its surface should not be slipped. Only when the inspection is carried out correctly and the operation manual is followed during the operation, can the machine tool operate better and prolong the working life of the machine tool.

The correct operation and use of a Double column VMC machine can prevent abnormal wear and tear, avoid sudden failures, and do a good job in daily maintenance, which can maintain the good technical state of the machining center, delay the deterioration process, and ensure safe operation.

Today, I will introduce the maintenance items from the mechanical parts:

1. Maintenance of tool magazine and tool changing manipulator it is strictly prohibited to install overweight or overlong tools into the tool magazine of the Double column VMC machine to avoid tool dropping or collision between the tool and the workpiece and fixture during tool changing of the manipulator; Frequently check whether the zero return position of the tool magazine is correct, check whether the position of the tool change point of the spindle is in place, and adjust it in time; When the machine is started, the tool magazine and manipulator shall be operated in an idle state, and check whether all parts work normally, especially whether all travel switches and solenoid valves operate normally; Check whether the locking of the tool on the manipulator is reliable, and handle it in time if any abnormality is found.

1. Maintenance of the main drive chain regularly adjusts the tightness of the spindle drive belt of the Double column VMC machine to prevent rotation loss caused by belt slip; Check and maintain the lubrication of the main shaft, supplement the oil quantity in time, and clean the filter regularly; The tool clamping device in the spindle will produce clearance after long-term use, which will affect the clamping of the tool. It is necessary to adjust the displacement of the hydraulic cylinder piston in time.

1. Maintenance of ball screw thread pair regularly check and adjust the axial clearance of ball screw thread pair to ensure the reverse transmission accuracy and axial stiffness; Regularly check whether the connection between the lead screw and the bed is loose; If the lead screw protective device is damaged, it shall be replaced in time to prevent dust or chips from entering.

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