LM Guide THK - Industrial Technologies

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Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94Determining the AccuracyAccuracy StandardsAccuracy of the LM Guide is specified in terms of running parallelism, dimensional tolerance forheight and width, and height and width difference between a pair when 2 or more LM blocks are usedon one rail or when 2 or more rails are mounted on the same plane.For details, see Accuracy Standard for Each Modelon A1-94 to A1-103.[Running of Parallelism]It refers to the tolerance for parallelism between the LM block and the LM rail reference surface whenthe LM block travels the whole length of the LM rail with the LM rail secured on the reference referencesurface using bolts.Fig.16 Running of Parallelism[Difference in Height M]Indicates a difference between the minimum and maximum values of height (M) of each of the LMblocks used on the same plane in combination.[Difference in Width W2]Indicates a difference between the minimum and maximum values of the width (W2) between each ofthe LM blocks, mounted on one LM rail in combination, and the LM rail.Note1) When 2 or more rails are used on the same plane in parallel, only the width (W2) tolerance and the difference on themaster rail apply. The master LM rail is imprinted with "KB" (except for normal grade products) following the serial number.Serial numberIndustrial TechnologiesMaster side symbolFig.17 Master LM RailNote2) Accuracy measurements each represent the average value of the central point or the central area of the LM block.Note3) The LM rail is smoothly curved so that the required accuracy is easily achieved by pressing the rail to the reference surfaceof the machine.If it is mounted on a less rigid base such as an aluminum base, the curve of the rail will affect the accuracy of themachine. Therefore, it is necessary to define straightness of the rail in advance.A1-92
Индастриал Технолоджис www.industrial‐technologies.com.ua +38 044 498 21 94Point of SelectionDetermining the AccuracyGuidelines for Accuracy Grades by Machine TypeTable14 shows guidelines for selecting an accuracy grade of the LM Guide according to the machinetype.Machine toolIndustrialrobotSemiconductormanufacturingequipmentOther equipmentTable14 Guideline for Accuracy Grades by Machine TypeType of machineAccuracy gradesCt7 Ct5 Normal H P SP UPMachining center • •Lathe • •Milling machine • •Boring machine • •Jig borer • •Grinding machine • •Electric discharge machine • • •Punching press • •Laser beam machine • • •Woodworking machine • • • • •NC drilling machine • •Tapping center • •Palette changer•ATC • • •Wire cutting machine • •Dressing machine • •Cartesian coordinate • • •Cylindrical coordinate • •Wire bonding machine • •Prober • •Electronic component inserter • •Printed circuit board drillingmachine• • •Injection molding machine • •3D measuring instrument • •Office equipment • • • •Conveyance system • • • •XY table • • •Coating machine • • • •Welding machine • • • •Medical equipment • •Digitizer • • •Inspection equipment • • •Ct7 : Grade Ct7Normal : Normal gradeH : High accuracy gradeP : Precision gradeSP : Super precision gradeUP : Ultra precision gradeCt5 : Grade Ct5LM GuideIndustrial TechnologiesA1-93
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LM Guide THK - Industrial Technologies

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