Time-consuming fixturing and secondary operations are eliminated as groove quality is improved
A manufacturer of heat exchangers was drilling, reaming, and grooving holes in tube sheets on a vertical CNC mill. The grooving tool in use wouldn't work properly on the CNC machine, due to slight variations in the surface height of the tube sheets. The tube sheets had to be taken to a radial arm drill for grooving. About two hours were required for refixturing.
Another problem emerged as the grooving operation on the radial arm drill left burrs in many of the grooves, requiring a subsequent "dry-reaming" operation for burr removal.
Cogsdill recommended the Tube Sheet Pro® grooving tool with overtravel shank to groove the tube sheets on the CNC mill. The overtravel feature compensates for variations in tube sheet surface height. The customer only fixtures once for drilling, reaming, and grooving. A trial run was conducted in which 128 holes were grooved with the Tube Sheet Pro. All were accurately sized and located and (continued on reverse side) had good finishes. The holes were checked with a gage for burrs; all were burr-free.
The customer reports that the Tube Sheet Pro is now being used on all of their tube sheets. The secondary operations on the radial arm drill have been eliminated for very significant time and cost savings with improved groove quality.
Tool type: TSP-750-1OT Tube Sheet Pro Machine type: Vertical CNC mill Material type: Carbon steel Spindle speed: 400 RPM Feed rate: 5 IPM (.012 IPR) Cycle time: 18 seconds per hole Coolant: Semi-synthetic Size required: 1/8 in. wide x .015 in. deep x 2 grooves ea. hole (1/4 in. spacing) Size achieved: Accurate size, depth, and location Finish required: Smooth, without burrs Finish achieved: Excellent (all holes passed gage test)
Cogsdill Tool Products offers a wide array of standard tooling and a broad range of solutions for burnishing including: Standard Roll-a-Finish tools for IDs and ODs; Special designs for tapers, faces and contours; Single-roll and diamond tools for ODs, large IDs, faces, tapers, contours, and irregular surfaces; CX external burnishing machines for shafts or cylindrical surfaces of any length. Parts are sized, finished, and work-hardened in seconds! Refer to our catalog no. 500, Burnishing Tools and Machines, for more information.
In 1914 Stuart A. Cogsdill set up shop in Detroit as a cutting tool regrinding and repair service. He soon began designing and manufacturing special tools for early automotive pioneers such as Henry Ford and the Dodge brothers. Today Cogsdill Tool still offers its 21st century customers the same commitment that inspired its founder: We will develop and build innovative tooling solutions for your tough manufacturing problems. Cogsdill has two operating units, one in the United
States and one in the United Kingdom:
Fred Ogburn Corporate Communications Manager, USA
(803)438-4000 ext 218 firstname.lastname@example.org
Name: Cogsdill Tool Products, Inc.
Address: P.O. Box 7007-TR
ZIP: 29020 7007