Make reasonable Machine tool repair Programme is the basis for repairs in preparation. Must repair scenario, the specified repair items and content. According to processing requirements, determine the complete overhaul or repair, partial modification, numerical control refit of specific projects. When fixing one machine should be according to the product characteristics of the workpiece, machine use requires a specific analysis. Precision cannot be considered alone repair the higher the better, function better, but should take into account the comprehensive technical and economic indicators make the repaired machine performance and accuracy to meet the process requirements.

Bed rail repairs, equipment condition, method for repairing machine guide way surface also varied, mainly from the following three types:

(1)Scraping method.

(2)Precision planing scraping method.

(3)Grinding scraping method.

For some wear of more than 0.5mm More than guides, whether by planing or grinding method of repair, hoping each time planing, grinding allowances strictly controlled within the minimum values, so as not to affect the stiffness of the rail.

Need repair but the overall amount of wear is not much of a guide, if the surface has deep grooves, scratches, napping while waiting for the formation of local damage, epoxy resin (Mixed with iron powder or quartz powder )Attaching, or silver electrode, babbit welding rod, Tin-bismuth alloy welding rods, cast iron cold welding electrodes for repair welding and finishing. This also applies to the daily maintenance of the Rails.

When grinding or gouging, and if removed from the foot of the bed to bed down and fixed guideway, because after it is possible to assemble the bed bottom surface contact with the foot or screw fastening Assembly deformation caused by the weak. Need to check if that situation occurs, if it cannot be restored to the guide before Assembly precision, you can scrape the surface and check the oil surface.

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