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Two 12" hubs used on a Lathe that will be used for the production of printing machines. These are produced by C&R for REMCO and are shown here before and after machining.
Shown below is the machine used to machine these 12' Hubs that are subsequently welded to the spindle.
This is an Okuma LU25M Live Tooling Lathe. The term Live Tooling Lathe denotes that the tool stations are available to hold turning as well as milling tools and can be automatically changed to perform many different turning and milling operations on a part. In this case, 6 operations are performed on the hub, including drilling of outer patterns of holes and all other surfaces. Upper turret holds 12 tools, either turning (rotating the part against the stationary tool) or milling (rotating a tool against the stationary part), that can be completed on this machine. The lower turret behind the door can hold additional 10 tools.
The program used to control the machining is stored on the DNC network and input through the RS232 port seen on the lower right side of the machine's computer. The complete program can be generated on the machine's computer debugged, used, and then stored on the DNC network.
Shown here are partially machined tubes and hubs for the Printing Industry Lathe Spindle. The tubes are machined on a manual Colchester Lathe. This manual lathe is used because of the small number of cuts and simplicity of setup along with the low volume.
Continuing the completion of the Lathe Spindle, the hub and tube are joined by a robotic welder. This process takes about 8 minutes. The spindle and hub are machined so as to press fit together and then positioned for robotic welding.
A spindle being machined in the Lathe, note the tool on the right is making all outside diameter features. The outside diameter machining is performed on an Okuma LB 25 and takes about 30 minutes per part, approximately 30 lbs. of material is removed as chips. The bearing journals (the surface on which bearings rest) near each end of the spindle must meet part specifications that have a total range of .0003 (i.e., 3 ten thousandths of an inch, +/- .00015 of an inch).
Here we see the Lathe Spindle being
machined by Okuma LU25M Lathe. The right end of the Lathe Spindle is
accurately centered and supported by a computer operated steady rest,
centered to an accuracy of .0001 of an inch. The upper tool turret will
perform all face and inside feature machining. The inside features need
to run true to the outside features within .0002 of an inch.
Another view of the Okuma LU25M Lathe and Lathe Spindle. Here the 80 pound, 40 inch long Lathe Spindles are shown being loaded on custom carts used for transporting parts between machines. After this operation, the parts are completed and ready for loading on a pallet for shipment via C&R truck from Shawnee, KS to Grandview, MO, a distance of about 30 miles.
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