CNC Gantry Milling Machine Common Fault and Maintenance

CNC gantry milling machine long-term use of the process, inevitably will encounter some degrees of major failure, machine tool gantry milling machine components can be divided into CNC gantry milling machine body, CNC system and servo drive, most of its faults are due to these places.

First, the numerical control system software failure. It can be divided into two kinds of system software failure and application software failure, which are characterized as:

1. System software failure: because of design reasons, show the inherent nature of the failure.

2. Application software failure: because the deliberate output is correct and thus triggered, has a certain degree of chance and randomness.

3. Software failure is a kind of difficult to break out and the maintenance cost is relatively high, so repair should be done from here first.

CNC gantry milling machinein in use.

Second, the hardware failure of the numerical control system: can be divided into permanent failure, inter-pathogenic failure, edge failure three kinds, its characteristics as:

1. Permanent failure: a feature that is presented as a specific and therefore must not be recovered, also known as a soft failure.

2. Interstiturate failure: with a certain randomness, can be transformed into a soft fault.

3. Edge failure: the old components so that the boundary value changes, can gradually turn into a permanent failure.

Third, the machine tool gantry milling machine numerical control system interference fault: can be divided into external interference and internal obstruction two kinds, its characteristics as:

1, external interference: because of the device process, structure, line design, power supply and ground line mishandling or component performance changes triggered, showed as very weak occasional and random.

2, internal interference: often with the work site and the working environment thus show different characteristics, but also weak occasional and random.

Fourth, component failure: can be divided into control part of the fault and drive motor failure, its characteristics as:

1. Control part of the fault: important due to overload or improper cooling caused by the fault.

2. Drive motor failure: because the equipment working environment is relatively small, hydraulic motor water pollution, rust, damage or incineration. This type of fault is one of the commonly used faults of zui, should be noted, and this similar detection system is also due to uncomfortable pollution and rust, is also one of the low failure rate of one of the devices.

Mechanical wear failure: CNC gantry milling machine in the adoption process, because of the relative movement caused by friction, moving surfaces scraping each other, grinding, coupled with chemical erosion, resulting in wear and tear of parts.

CNC milling machines are on the way to milling.

(1) Milling outside induction of the way: the choice of end milling edge edge milling method, the choice of cutting into the road should be cut along the cutting induction of the extension line, when the back, to be along the induction of the extension line back. When milling the outer circle with the arc interpolation method, it also enters in the direction of the tangent, and moves more than one distance along the tangent direction when the cutter is off.

(2) Milling induction of the way: If the induction does not allow extension, when the advance and exit knife in accordance with the direction of the legal line cut and exit, when the milling machine choosearcation method milling, should choose from the arc to the arc of the processing method, to ensure the accuracy of processing.

(3) Milling inner groove when the way to: gantry milling processing process are selected flat-bottomed end milling cutter, milling methods have line cutting and ring cutting and two methods of mixing, the advantages and disadvantages of the two methods are that the line-cutting method will leave residue at the start ingesting and end, surface roughness does not meet the requirements, but the route is short;

(4) Milling surface induced induction of the way: machining method is usually with a spherical knife, the choice of line cutting method for machining, after the control of the cutting tool between the lines to meet the accuracy of the workpiece processing to show. Because the surface chasm is not bound by its surface, the spherical knife begins at the chasm.

Clean and maintain.

1, remove chips, wipe the machine, use the machine and the environment to maintain a clean state.

2, pay attention to check or replace the worn machine rail oil friction plate.

3, check the status of lubricants, coolant, timely addition or replacement.

4, in turn turn to turn off the power and total power supply on the machine operator panel.

5, machine tool should be turned on to zero first (except with special requirements), manual, dot, automatic principles. Machine operation should follow the principle of low speed, medium speed and then high speed, in which the running time of low speed and medium speed shall not be less than 2-3 minutes. Work cannot begin until it is determined that there are no anomalies.

6, is strictly prohibited on the chuck, between the top of the tap, correction and correction of workpieces, must confirm that the workpiece and tool clamping before the next step.