LM Guide THK - Industrial Technologies
LM Guide THK - Industrial Technologies
LM Guide THK - Industrial Technologies
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Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94Features of Each ModelUltra-heavy Load Type for Machine Tools Model NR/NRS[Comparison of Contact Surface and Internal Stress between Different Contact Structures]As shown in Fig.4, the contact area and the internal stress of a ball greatly vary depending on theshape of contact surface.With the conventional roller guide, the effective length is shorter than the apparent value due to theretention of the rollers. Additionally, the change of stress distribution in the contact section caused bya mounting error significantly affects the differential slip.Distribution of contact stress 1Normal clearance contact areaContact area under a preloadChange in contact surface dueto a mounting errorDistribution of contact stress 2d2 d1d2 d10.51Da 0.52Da 0.55Da1.8d1 d2Change in differentialslip: noned2 d1d1d2Change in differentialslip: none1.2 1.0 1.0d1d2Change in differentialslip: largeFig.4 Comparison of Contact Surface (φ 6.350 ball, φ 6 x 6l roller)d1d2d1d23.6Change in differentialslip: large<strong>LM</strong> <strong>Guide</strong><strong>Industrial</strong> <strong>Technologies</strong>A1-173