About Tailstocks and Bench Centers
Tailstocks are used on lathes and other machine tools to support one end of the workpiece through contact with a live or dead center. Benchcenters are table top mounted units used to support a workpiece between two tailstocks during inspection. A tail stock is a cast iron assembly that can slide along and be locked in place, and is used to hold long work in place or to mount a drill chuck for drilling into the end of the work. There are two types of tailstocks: manual and pneumatic. Manual tailstocks require workmen to apply pressure. Pneumatic tailstocks are driven by machines. If tail stocks are used, a dead center (which is non-rotating) may be used to support the workpiece, alternatively, a live center may also be used. Lathes with cylindrical tailstocks that can rotate around a vertical axis are turret lathes. All lathes have a bench centers, which is a horizontal beam.
All tailstocks are morse taper #3. Bench centers are precision ground tapered cylinders with a 60ยบ pointed tip and a morse taper shaft. A tail stock handwheel is a wheel with a handle and is used to move the tail stock ram in and out of the tail stock casting. Tail stock ram is a piston-type shaft that can be moved in and out of the tail stock by turning the tail stock handwheel. It has a tapered internal bore to accept a #2 morse taper shank. A lathe may or may not have a stand (or legs), which sits on the floor and elevates the bench center to a working height. Some lathes are small and sit directly on a workbench or table, and do not have a stand. A bench center is an important lathe component and is available in various sizes according to the work piece requirements. An inspection accessory is necessary for various machine-works to check the efficiency of the work piece. Aligning tailstock includes mounting a small center drill in the tail stock, turning the bar between centers and measuring the diameter of bar, and putting a straight bar between centers. Bench centers are generally used for long work pieces. Tailstocks must be aligned with the spindle within .0005 before beginning drilling operations.
More >>Engineering Web: Tailstocks and Bench Centers
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Suburban Tool, Inc. - PRECISION WORKHOLDING & INSPECTION... Angle Irons? Bench Centers? Parallels? Sine Tools? Squares? Straight Edges? Tri-Blocks V-Blocks? See Suburban Tool, Inc. Information |
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Taft-Peirce Metrology - STANDARD BENCH CENTERS Taft-Peirce Bench Centers offer a fast, accurate method of inspecting work on arbors, mandrels, or directly on centers. See Automation and Metrology, Inc. Information |
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Taft-Peirce Metrology - HEAVY-DUTY BENCH CENTER BED HEAVY-DUTY BENCH CENTER BED NO. 9209 Built to surface plate accuracy, this rugged Bench Center Bed may be equipped with See Automation and Metrology, Inc. Information |
