Lapping machine

a lapping machine and machine body technology, applied in the field of lapping machines, can solve the problems of reducing production efficiency and the inability of machines to accommodate marginally larger carriers, and achieve the effects of reducing the footprint of the lapping machine, and reducing the number of operating cycles

Inactive Publication Date: 2008-08-07
P R HOFFMAN MACHINE PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is a lapping machine that can accommodate different sized carriers and work pieces. It includes upper and lower lapping wheels and a sprocket with a common centered rotational axis. The machine has a rotational drive source for at least one of the upper and lower lapping wheels, and at least two independently locatable gears or sprockets for carrying a carrier between the upper and lower lapping wheels. The carrier travels at least partially radially exterior of both lower and upper lapping wheels during operation of the machine. The machine can reduce the number of operating cycles required to produce a predetermined amount of surface area of work pieces and accommodate customized carrier sizes for more efficient manufacturing operations."

Problems solved by technology

Such known machines suffer from the drawback that to accommodate a larger size carrier, the machine must be significantly enlarged, taking up a similarly increased amount of space in a manufacturing facility, thereby reducing production efficiencies.
Further, in the event larger carriers, even only incrementally larger carriers, can be used for applications previously unknown, these machines lack the flexibility to accommodate the marginally larger carrier, unless further sizable investment in a larger lapping wheel is made.

Method used

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Examples

Experimental program
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Embodiment Construction

[0021]Referring to FIGS. 2-4, a lapping machine 100 (FIG. 2) according to the present invention includes an upper portion 104 that is supported above a lower portion 102 by support columns 106. As shown, an annular base 108 extends outwardly from lower portion 102 toward upper portion 104 and encloses a lower lapping wheel 128 (FIG. 2) and a center sprocket 122 (FIG. 2). An upper lapping wheel 116 extends toward lower lapping wheel 128, upper lapping wheel 116 being rotatably carried by shaft 118 about an axis 120 and selectively raised and lowered with respect to lower lapping wheel 128. In one embodiment, center sprocket 122, upper lapping wheel 116 and lower lapping wheel 128 are centered with respect to axis 120. Controller 110 controls the operations of lapping machine 100 and includes a display device 112 and input device 114. Drive devices (not shown) contained within upper portion 104 and lower portion 102 urge upper lapping wheel 116, lower lapping wheel 128 and center spro...

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Abstract

A lapping machine includes upper and lower lapping wheels and a sprocket having a common centered rotational axis. A rotational drive source for at least one of the upper and lower lapping wheels provides rotational movement about the axis. At least two independently locatable gears or sprockets disposed radially exterior of the upper and lower lapping wheels rotatably carry a carrier between the upper and lower lapping wheels, in which a material carried within an opening formed in the carrier travels at least partially radially exterior of both lower and upper lapping wheels during operation of the machine.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to lapping machines and, more particularly, to lapping machines capable of accommodating differently sized carriers.BACKGROUND OF THE INVENTION[0002]Lapping machines, such as lapping machine 10 shown in FIG. 1, typically include at least a ring sprocket 16 having a lower lapping wheel 128 and a center sprocket 12. The ring sprocket 16 has a radius 18 and center sprocket 12 has a radius 14. During operation of lapping machine 10, center sprocket 12 rotates about a center axis 24. Teeth of a carrier 20 mesh with the teeth of ring sprocket 16 and the teeth of center sprocket 12 so that carrier 20 is urged into simultaneous rotational movement about its center axis 26 and planetary movement between radius 14 and radius 18. Carrier 20 includes one or more openings 22 for carrying a work piece 28, such as a disk that is exposed to lower lapping wheel 128 during operation. The diameter 30 of carrier 20 is a fixed distance,...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B24B37/04B24B7/00
CPCB24B47/12B24B37/08
InventorGODSHALL, MARK A.
OwnerP R HOFFMAN MACHINE PRODS