TPT January 2020

Dual-blade shear cutoff for rectangular tubes HAVEN Manufacturing Corporation is a specialist in tube re-cutting, focused on providing cost-effective machinery and total solutions for precision, high performance, fully integrated, loading, cutting, deburring and end-finishing.

short side, the cut is on the diagonal. Beyond the two to one ratio, in order to get the best quality cut possible, the tube is rotated 45° from the die centreline. This causes the top corner radius to shift to the front or back of the centreline, which also requires the shear blade

Founded more than 50 years ago, Haven’s reputation was established due to the speed and precision of its Dual- Blade Shear cutoff machine. The company has continued to develop its product line with a variety of innovative automated high-speed and high-volume tube cutting and processing machinery and recently overcame a significant challenge from a customer. The Haven dual-blade shear cutoff is known for its flexible ability to cut various tubular shapes: round, square, rectangle and oval. If the clam shell style clamp dies can encapsulate the tube shape, then there is a good chance Haven can cut it. Round tube is the easiest. Square tube is cut on the diagonal, corner to corner. Rectangle shapes are not as straightforward. In general, if the long side of the rectangle is equal to, or less than, two times the

point to be offset to match the new corner radius location. The blade now has a compound included angle. In this case study, a HavenModel #875 Dual-Blade Shear Cutoff is equipped with side shifting on the bundle loader and exit tube guide sort table. With the clamp die and shear blade positioned to the front of centreline, the customer is able to cut 1" x 4" and 1" x 5" rectangle tube, with no deformation and minimal burr. The Haven dual-blade shear cutoff process is a flexible tube cutting method. Haven is a full-service turnkey equipment supplier to a wide variety of tubular applications for

Tube re-cutting from Haven

cut-to-length, finishing and material handling. Haven Manufacturing Corporation www.havencut.com

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JANUARY 2020

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