US2009222A - Abrading element - Google Patents

Description

July 23, 1935. K. w. CONNOR ABRADING ELEMENT Filed NV. l1, 1951 u l 1 db//l//ll/ INVENTOR h/re I4( 602727021 l WIr-romlays.

Patented July 23, 1935 UNITED STATES 2,009,222 ABBADING ELEIWENT Kirke W.

of Michigan l Connor, Detroit,

Micromatic Hone Corporation,

Mich., assignmto a. corporation Application November' 11, 1931, serial No. 514,380

3 Claims.

My invention relates to abrasive elements and particularly to an abrasive element of the composite type constructed in such manner as to be resilient and containing a lubricant.

While my abrasive element will be herein described in relation to its use as an element for a honing tool, it is to be understood that in its broad aspects the abrasive element may be utilized on any dressing machine and especially on machines where rapid grinding, accompanied by high polish, is desired.

The main objects of my invention are; to provide an abrasive element oi the composite type which is made up from an abrasive material, a filling material, a lubricant and a bond to form a unit abrasive element; to provide an abrasive element which is resilient and compressible an amount proportional to the cut to be made, the degree of which reduces directly with the compression. To provide a lubricant as a contiguous part of the element to eect its lubrication in the presence oi heavy cutting and to effect a high polish as the degreeo cut reduces; to provide a lubricant which is preferably a solid such that may be bonded along with the abrasive and ller material, or which may form part of the binder or which may be a fluid and absorbed by the nller or other material, all oi which go to'make up my composite abrasive element.

Other objects and features ci novelty oi my invention will be either specifically pointed out or will become apparent when referring, for a better understanding o my invention, to the following description in conjunction with the accompanying drawing, wherein:

vFigure l. is a perspective view, in section, oi an abrasive element embodying features oi my invention,

Fig. 2 is a view' similar to that or Fig. i, showing a modied form which invention may assume, and

Fig. 3 is a view similar to Figs. i and 2, showing a further modied form which my invention may assume.

Referring to Fig. i, the abrasive element 5 is retained in a metal supporting element e through the medium oi an adhesive material ll which binds the element to the metal in a well known manner. The abrasive element b is constructed oi-a composition of materials, comprising a b or ller material which is preferably resilient and may be oi cork particles, macerated duck or like materials which may have a certain degree oil porosity im' absorbing and retaining a lubricant such as oil. The cork is bonded with an abrmive terial which may be carborundum or like well known abradant. The bonding material may be any well known adhesive such as glue, a phenol compound known in the trade as bakelite, a shellac or other suitable substance which preferably has 5 a certain degree of resiliency. In the place of providing a lubricant such as mineral oil which is absorbed by the ller or other material, the lubricant may be a solid, such as graphite or parafii or the like, or a combination thereof with the lo bonding material to form a lubricating binding compound which retains the abrasive'material bonded to the ller material.

The composite abrasive element thus formed is resilient and embodies desirable features not 15 present in abrasive elements of the solid type heretofore employed. For example, when the element is employed in a honing tool, the tool may be considerably simplified by having the advancing bias, heretofore provided therein, elimg@ inated and the setting of the tool to provide the proper degree of cut will ensue by adjusting the tool to compress the abrasive element a predetermined amount. After the element has been adjusted in this manner, the initial operation of g5 the elements under compression will effect a rapid cutting of the cylinder Wall and as the cutting proceeds the compression of the abrasive element is reduced with a like reduction in the degree of cut effected by the element. As the compres- 3o sion of the honing element decreases the amount of cut in the presence of the lubricant is materially decreased effecting a high polish to the surface. This desirable feature of the flexible abrasive element obtains when the element is 35 employed for grinding surfaces other than the surfaces of cylinder bores.

In Fig. 2, li have illustrated a modified form of abrasive elements which comprises a resilient body member il of channel shape having a cene@ trai groove 'l2 in which an abrasive material i3 is disposed. The abrasive material may be bonded with a lubricant, the lubricant may be absorbed by the resilient body member il or the particles lubricant. resilient and the benefits derived therefrom, as pointed out in regard to the abrasive element illustrated in Fig. l, obtains for the structure illustrated in Fig. 2.

A further modified form of the abrasive element is illustrated in Fig. 3 wherein the lubricant i6, the abrasive material i5 and the resilient iiller or body members it are provided in individual strips and assembled together to eiect a 55 composite element having the resilient features pointed out with regards to the form of the invention illustrated in Figs. 1 and 2.

It is to be understood that other methods and means of assembling the abrasive, the lubricating and the illler materials to form a resilient abrasive element may be utilized such, for example, as providing pads of felt or like material in the form illustrated in Fig. 3 in which a mineral oil or like lubricant may be retained. In a similar manner, the material Il in Fig. 2 may be the abrading material and the felt pad may be the element I3 disposed therein. Oil may be applied to the pad which will be absorbed and retained for eiecting the desired lubrication and a wet type of honing in a dry manner. In any instance, the broad aspect of my invention pertains to the resilient and lubricating features of the composite abrasive element which is submitted to be new in the art.

While I have described and illustrated several embodiments of my invention, it will be apparent to those skilled in the art that various changes, omissions, additions and substitutions may be made therein without departing from the spirit and scope of my invention, as set forth in the accompanying claims.

I claim as my invention:

1. A composite abrading stick including, in combination, a length of abrading material in the nature of a solid stick, and a length of material which will absorb a liquid, one of said lengths being slotted to receive the other.

2. A composite abrading stick including, in combination, a. length of abrading material in the nature of a solid stick, and a length of a material containing a lubricant, one of said lengths being slotted to receive the other.

3. A composite abrading stick including, in combination, a. length of abrading material in the nature of a solid stick, and a length of lubrieating material, one of said lengths being slotted 20 to receive the other.

KIRKE W. CONNOR.

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