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Linear Guide Maintenance Work Jun 26, 2017


Linear guide is the most important part of the CNC cutting machine, it is a straight reciprocating motion for the tool, this tool has a straight line bearings do not have a higher rated load, but also can take a certain Torque, but also in the case of high load to achieve the same high precision linear motion, the device smooth and accurate operation of the function.

CNC cutting machine above the linear guide, linear axis as a CNC cutting machine one of the core components, its function is to guide and support. In order to ensure that CNC cutting machine has a high processing accuracy, requiring its rails, straight lines have a high degree of guidance accuracy and good movement of the smooth.

The most common is the rolling guide rails formed by a combination of a planar guide, Linear Rail a linear rolling guide and a circulating roller and a planar guide. Although the classification of the guide a lot, but the nature of the work are mostly the same, for the carrier to provide a smooth moving surface; the machine tool to deal with the force to reduce the impact of passive processing parts.

Most of the guide rails are linear motion, a few for the arc movement. Linear guide after precision processing process combined with rolling ball, its high-speed movement, the friction coefficient is small, high sensitivity to meet the working parts of the work requirements. Linear Rail Which is how the rolling elements contact with the rail surface, which is the most direct impact on system performance, one of the main factors.

Linear guide to the CNC cutting machine can get rapid feed speed, spindle speed in the same circumstances, the rapid feed is a linear guide characteristics. So how do we need to align the linear guide?

The specific operation is as follows:

1, the two ends of the rails tighten the standard steel wire 1 / 2000mm, and adjust the guide plate on the two adjustment screws, so that both ends of the guide rail and the standard wire distance is a certain value, Linear Rail and the distance as a standard distance.

2, with 20N tension, tensile accuracy of 1 / 2000mm steel tape measure the distance between the main and auxiliary rails should be the distance between the machine, otherwise the application of steel wire to adjust the guide rail, while adjusting the wire to ensure that the standard distance unchanged.

3, with the accuracy of 1 / 10000mm theodolite measurement of the main rail and sub-rail at both ends of the flatness, and with the rails to adjust the height of the bolt, Linear Rail so that both sides of the main and auxiliary rails flatness maintained at 0.5mm or less.

4, with a pressure plate to compress the end of the main and auxiliary rail each one, as the adjustment rail horizontal, vertical level, the main and sub-channel flatness, the main and auxiliary rail spacing of the base, the straightness of the Linear Rail guide wire and rail side of the standard Distance as a benchmark.

5, with the adjustment and the spike one by one to adjust the distance between the two main rails and standard wire distance, transferred to the standard distance.

6, with the bubble level instrument to adjust the horizontal and vertical horizontal guide, from one end of the rail to the other end of the gradual calibration, and then the two rail joints, to ensure that it is in a horizontal state.

7, the main and sub-rail calibration qualified, should be carefully tighten the guide rail between the bolts, and press the plate with the pressure plate, Linear Rail and should be carefully checked the guide rails shall not move and deformation, rail joints at the horizontal and side should be smooth.

And we in the daily maintenance should also pay attention to the CNC cutting machine linear guide for maintenance work to ensure the better operation of the device, the specific method is as follows:

1, pull out the total power of CNC cutting machine, Linear Rail press several times the CNC cutting machine switch, the release of static electricity.

2, remove the CNC cutting machine guide. Wipe the surface of the rails with wipes and the backlog.

3, with your fingers in the linear guide with a finger on the surface coated with a little grease, give priority to ensure that the groove.

4, with a few drops of oil on the linear guide rails above, and then move the linear guide to come back and forth several times to ensure that the rails throughout the body with lubricants.

5, the straight rails loaded up. And then open the CNC cutting machine's total power, press the CNC cutting machine switch.