Boring and Contouring Heads

Dramatic Improvements in Quality and Productivity

Subcontract machine shop had to obtain high quality threads in a very deep bore, with a smooth transition to a 30° angle. The large part, made of stainless steel and Inconel, was about four and a half feet in length and could not be rotated.

The part was machined on a horizontal boring mill. The bore in the end of the
part closest to the 1-1/2 inch internal threaded diameter was only 1 inch in diameter.
Consequently, they had to "peck" the threads from the opposite end of the part (a
distance of over 50 inches) with a series of three taps mounted on long extensions. Then they put in the 30° angle with a form tap. Cycle time was 22 hours. The thread quality was acceptable, but they had great difficulty making a smooth blend to the angle.

Cogsdill recommended a ZX200 Boring and Contouring Head. The head is actuated by the programmable inner quill on the horizontal boring mill and fitted with an industry-standard boring bar with a mini V-lock insert. The customer now back-bores the threads from the opposite end of the part (only 2-1/2 inches away from the threaded diameter). Thread quality was dramatically improved, the transition to the angle on the threads was consistently smooth, and cycle time was reduced from 22 to 1-1/2 hours. This very satisfied customer is now applying the ZX head to other machining operations and enjoying substantial time and cost savings.

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:


Public Relations:

Fred Ogburn Corporate Communications Manager, USA

(803)438-4000 ext 218

Company Information:

Name: Cogsdill Tool Products, Inc.

Address: P.O. Box 7007-TR

City: Camden

State: SC

ZIP: 29020 7007

Country: USA

Phone: 803-438-4000

FAX: 803-438-5263

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