Stimmen - 4, Durchschnittliche Bewertung: 4.3
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Anleitung Zusammenfassung
Adjust the stylus height until the follower edge is centered on the template or profile. Tighten the setscrew to secure the stylus. Figure 11. Stylus follower edge. G2891 Lathe Copy Attachment -13 SECTION 5: Operations Overview This Copy Attachment will produce any number of duplicate spindles from one master profile or template. The advantages provided by this accessory for your wood lathe are readily apparent, in terms of consistency and labor savings. While the Copy Attachment provides a substantial aid in recreating spindle profiles, keep in mind that it is designed primarily for rough spindle shaping. Its capacity for detail is limited by the cutter and stylus. Final detailed turning will be best accommodated with the use of hand-guided, precision turning chisels. To minimize the need for extensive hand work, we recommend you create profiles with graceful tapers and beads whenever possible. Important Points Because small-diameter master spindles have the potential to bend or bow slightly when the stylus makes contact, we recommend using a template made from 1/4" to 3/8 " plywood or some other stable material. The master spindle profile can be transferred to the template and carefully cut out. The template can then be attached to the mounting brackets located on the front side of the Copy Attachment body. See “Stylus Adjustment” in the Adjustment Section for details on proper template alignment. The following are some other important points to consider when using your Copy Attachment: • To reduce whip and vibration of relatively narrow copy spindles, we recommend operating the longitudinal handwheel with your left hand and backing up the spinning work- piece with your right. DO NOT attempt to grip the workpiece too tightly while it is turning. • If the cut you are producing is too rough, try increasing the rotation speed of your lathe (not to exceed the maximum recommended speed for the size of material you are turning) and take a lighter cut. See your lathe’s instruction manual for recommended speeds. • As with any other surfacing operation, we recommend taking multiple passes, rather than trying to remove too much wood all at once. This is much safer and will also result in improved cutting results. • When making copies, always move the stylus so it follows the template or master profile “downhill”. Trying to move the stylus “uphill” along the template will cause the stylus and cutter to dig into the template and workpiece. See Figure 12 for recommended direction of cuts. • To avoid unnecessary waste of expensive premium materials, we strongly recommend you turn a test piece before attempting duplication on your finish material. Make adjustments as required. • You can save time during duplication by removing the corners from all of the spindles you plan on creating before activating the Copy Attachment. You will need to make the cuts with a lathe chisel on your tool rest, prior to installing the Copy Attachment. -14- G2891 Lathe Copy Attachment Master Spindle or Template StylusMove from high points towards Master Spindle or Template StylusMove from high points towards areas with greater depth of cut Figure 12. Recommended direction of stylus travel. Basic Operation To make a copy of an existing spindle or template: 1. To make identical copies from a master spindle it is necessary to first make certain the cutting tool and the follower stylus are aligned with their respective centerlines. See Figure 13. This can be done most easily by mounting turning squares with identical dimensions on the lathe centers and on the Copy Attachment centers. Move the follower stylus so it just touches the square. Adjust the cutting tool in or out of the holder so it also just touches the square. Remove the turning squares. 2. Mount the workpiece between the lathe centers. 3. Move the carriage with the longitudinal handwheel until the tip of the cutter is precisely located at the point on the workpiece where you want the turning action to begin. See Figure 12. Lathe Centerline Cutting Tool Copy Attachment Centerline Follower Stylus 4. If you are using a template, spread the template- mounting brackets apart to accommodate the template. Note that you will have to drill holes in your template to mount it to the template mounting brackets. Locate the position of the template on the Copy Attachment main body so the profile will line up with the desired location of the profile on the workpiece. If you followed Step 2, the stylus should line up at the starting point of the template. 5. Adjust the crosswheel until the stylus comes in contact with the template in its desired position. 6. If duplicating an existing spindle, mount the spindle between the master spindle carriers. First position and lock the head center so the existing spindle profile will line up with the intended profile area on the copy. Use a 13mm wrench to loosen and tightening the mounting fasteners. Slide the tail center so it is just outside of the master sp...