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Mechanical Parts Travelling Along Dual Parallel Shafts

IP.com Disclosure Number: IPCOM000042311D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Petrovick, JM: AUTHOR

Abstract

This article describes reshaping the two holes of a slider guide to minimize binding of any sliding member moving along two parallel shafts. Each hole is reshaped in one direction only. One hole will maintain horizontal reference, while the other maintains vertical reference for the slider. This method allows accurate, low-friction sliding without ball bearings. The problem of binding occurs when guide rods are not properly aligned. Even when guide rods and slider conditions are ideal, binding can occur when slider thickness allows tipping relative to the guide rods and the leading and trailing edges of a slider hole act together to seize the guide rod (Fig. 2). Fig. 1 shows the slider member 10 positioned on the guide rods 16. These guide rods must be substantially parallel to help prevent binding.

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Mechanical Parts Travelling Along Dual Parallel Shafts

This article describes reshaping the two holes of a slider guide to minimize binding of any sliding member moving along two parallel shafts. Each hole is reshaped in one direction only. One hole will maintain horizontal reference, while the other maintains vertical reference for the slider. This method allows accurate, low-friction sliding without ball bearings. The problem of binding occurs when guide rods are not properly aligned. Even when guide rods and slider conditions are ideal, binding can occur when slider thickness allows tipping relative to the guide rods and the leading and trailing edges of a slider hole act together to seize the guide rod (Fig. 2). Fig. 1 shows the slider member 10 positioned on the guide rods 16. These guide rods must be substantially parallel to help prevent binding. The slider holes 12 and 14 in Fig. 3 are reshaped horizontally (hole 12) and vertically (hole 14), respectively. The reshaping inhibits binding. At the same time, hole 12 is unchanged vertically and provides vertical reference for the slider, while hole 14 is unchanged horizontally and provides horizontal reference for the slider. In applications where the two slider member holes cannot economically be reshaped, as in Fig. 3, the two parallel shafts can be shaped, as shown in Fig. 4, for similar low-friction sliding motion.

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