Jet HVBS-710S Operating Instructions And Parts Manual

Also see for HVBS-710S: Operating instructions and parts manual

Jet HVBS-710S Operating Instructions And Parts Manual Manual pdf 14 page image

149.4 Miter cuts1. Loosen handle (G, Figure 17).2. Rotate bow to desired angle up to 45-degrees, using scale indicator on front ofbase.3. Tighten handle.Figure 17The angle scale is sufficient for most miteringoperations. If greater precision is needed, verifysetting with a protractor.If handle (G) movement is obstructed, lift up onhandle and rotate it on the pin. Release handle,making sure it seats itself properly on pin.Bow should be returned to90-degree cut angle before lifting intovertical position. See section 7.5.9.5 Setting feed rateThe feed rate of the blade into the workpiece isimportant to band saw performance. Excessivepressure of blade against the workpiece maybreak the blade or stall the saw. In contrast,insufficient pressure rapidly dulls the blade.The hydraulic cylinder resists movement of thebow in the downward direction. It offers noresistance when the bow is raised upward.To increase feed rate, turn dial (A, Figure 18)counterclockwise. To decrease, turn clockwise.To close hydraulic flow, turn lever (B) down,perpendicular to cylinder, as shown in Figure 18.To open hydraulic flow, raise lever (B) parallel tocylinder.Feed rate is adjusted by the operator until thesaw is operating efficiently; usually determinedby observing chip formation. See section 11.4,Evaluating cutting efficiency.Figure 189.6 Counterbalance springThe counterbalance spring helps control theamount of weight the saw bow puts on theworkpiece when the hydraulic control valve isfully open. The hydraulic cylinder will notcompensate for improper counterbalance.If the spring is not set properly, one can expectpoor performance, crooked cuts, tooth stripping,stalling, and/or the blade running off the wheels.Spring tension has been set by themanufacturer, and should not requireadjustment. If future problems arise, indicatingimproper counterbalance, adjust spring asfollows:1. Disconnect machine from power source.2. Turn ON hydraulic cylinder valve and placesaw bow in horizontal position.3. Turn feed rate valve on hydraulic cylindercounterclockwise until it stops.4. Place a weigh scale (such as a spring orhanging scale) beneath blade tensionhandle, and lift saw bow. Scale shouldindicate approximately 5 to 6 kg (11-13 lb).5. If adjustment is needed, loosen one nut andtighten the other (H, Figure 17) on the eyebolt, until scale indicates 5 to 6 kg.9.7 Blade installation/replacementThis band saw is designedfor use with blades that are 3/4" wide by0.032” thick x 93” long. Use of blades withdifferent specification may cause inferiorperformance.A general-use variable-tooth blade is providedwith this band saw.The choice of blade pitch is governed by thethickness of the work to be cut: the thinner theworkpiece, the more teeth advised. A minimumof three teeth should engage the workpiece at all