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Rotating Magnetic Head Locating Fixture

IP.com Disclosure Number: IPCOM000083443D
Original Publication Date: 1975-May-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Albrecht, DW: AUTHOR [+2]

Abstract

The rotating magnetic head 10 is contoured as shown. The highest point of the head contour occurs at the gap B. As the head 10 is mounted on a rotor 12 and pitched to a specified attitude, it is rotated about the point at gap B. Rotation about point B moves the center of the head contour radius to point G. The point D is, therefore, the point on the head contour at which maximum penetration occurs. To locate the point D and thus precisely adjust the head 2 on its rotor 12, the fixture as shown in Fig. 1 is used.

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Rotating Magnetic Head Locating Fixture

The rotating magnetic head 10 is contoured as shown. The highest point of the head contour occurs at the gap B. As the head 10 is mounted on a rotor 12 and pitched to a specified attitude, it is rotated about the point at gap B. Rotation about point B moves the center of the head contour radius to point G. The point D is, therefore, the point on the head contour at which maximum penetration occurs. To locate the point D and thus precisely adjust the head 2 on its rotor 12, the fixture as shown in Fig. 1 is used.

The head 10 and head mount assembly, not shown, is located on a penetration slide 1 which is in turn coupled to plate 2 by pins 4. Groove 3 permits movement of the slide 1 to set the penetration of the head 10 without significantly changing its rotation. A mechanism, not shown, accurately adjusts the slide 1, and thus head 10 for precise penetration depth into the media to be read by the head 10.

The rotor 12 is placed on the fixture and pin 13 is inserted to insure the angular location of the head mount assembly to the rotor 12. The prism mounted on arm 9 is placed into contact with the head 10.

The prism and arm 9 pivots about pin E which is suitably fastened to a mounting block 11. Interferometry fringes A will be observed as the prism contacts the head 10 at point D, see Fig. 2. The prism includes a secondary cross hair for locating the gap B and a primary cross hair to locate the maximum penetration at high poi...