US1471281A - Polishing machine - Google Patents

Description

E. F. RIES ct. 16, i923.

POLISHING MACHINE Filed Feb. 2l. 1921 5 Sheets-Sheet 1 .r1/ N@ \1 l w 1 1 x Wm. 1 QR( .ww www .l Km. \\.1/M-.w O, \J 1 uw., M ,"1 0 1m x ,/f l\\\\\\\\ 11.1 1 1.1%, 1 f QN n.wsw www.

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E. F. RIES @CL 16, w23.

POLISHING MACHINE Filed Feb. 2l. 1921 3 Sheets-Sheet 2 A www @N NNN Oct, 16, 1923..

E. F. RIES PoLIsHING MACHINE Filed Feb. 2l, 1921 5 Sheets-Sheet 3 .Fetented i5,

ELMER F. RIES, F HABBSON PIECE, CNCNNATI, OHIO, ASSIGNOR T0 MAX SCHMIDT,

TnUs/rnn ron marsans, Lnn, ann sreiaonn v.

RIES, EMIL NEUBACHER, THEODORE 0. ALL 0F CINCINNATI, OHIO.

BUMIL- POLISHING MACHINE .application med :February 21, 1921. serial no. 446,525.

To all Lo/wmA t may concern:

Be it known that l, ELMER F. Ries, a citi zen of the United States, residing on the Harrison Pike, city of Cincinnati, county 'of Hamilton, and State of Ohio, and whose postofiice address is box 25, station L, Cincinnati, Chio, have invented a new and useful Polishing Machine, of which the following is a specification.

My invention relates to that class of polishing machines for polishing tubes and rods of circular cross-section, employing f abrasive wheels or belts running at a high surface speed. The abrasive agency may either consist of grinding wheels of composite structure such as carborundum, or of natural mineral stones, such as. emery or sandstone, or of wheels or belts of fibrous material like felt, leather or layers of heavy duck or muslin and the like, the periphery of which is coated with the abrasive material held in place by an adhesive.

lThe abrasive agency is, hereinafter referred to as an abrasive member andthe object worked upon as the rod.l I have shown my invention applied in connection with a rotary abrasive wheel. It is obvious, however, that an abrasive belt can be employed without in any way departing from the spirit of my invention.

The object of my invention is to provide means for guiding and automatically feeding past the abrasive member the object to be polished, such as rods and tubes of circular cross-section, by the action of the abrasive member itself. The rods worked upon can be of indefinite length, depending upon the length of the feeding mechanism employed.

A further object of my invention is to provide means for adjusting the mechanism of my improved construction to different diameters of rods, to regulate and control the character of finish produced and the amount of material removed by the abrasive member, and to control and regulate the rate of feed of the rods past the abrasive member.

My invent-ion consists in the combination and arrangement of the several parts and mechanism with an abrasive member, as herein set forth and claimed, and as illustrated in the drawings, in which:

Fig. l is a front elevation of my invention.

sie

controllin mechanism in section on a plane correspon ing to the line 5 -5 of Fig. 3;

Fig. 6 is a vertical section illustrating the finish regulating and controlling mechanism taken on a plane corresponding to the line 6-6 'of Fig. 3;

Fig. 7 is a horizontal section' of the finish regulating and controlling mechanism taken on a plane corresponding to the line 7- of'Fig. 5;

Fig. 8 is an inside elevation of the rail showing the mounting of the stationary guide rollers, with the adjustable guide rollerl brackets removed; and

Fig. 9 is a side elevation of the adjustable guide rollers, housing and bracket therefor.

A preferred embodiment of my invention is set forth in which a usual abrasive member here sh'own as a wheel 12 is'mounted between fianges 14: held in place by clamp nut 15, on shaft 13 running in bearings 16 in frame 17. The shaft has pulley 18 secured thereon and is driven 'b y belt 19 which is here-instanced as passing through the hollow of the main frame and driven from below in the usual manner.

TWhen a rod to be polished is held in contact with the surface of the abrasive member, there is a tendency for the same to rotate in a direction opposite to that of the abrasive member. In the mechanism hereinafter described, I take advantage of this fact, in providing a ready path of travel with a minimum of friction and wear, and a maximum of safety. Thus 25 is a feed roller supporting rail, comprising horizontal web 26 and vertical web 27, having thereon main feed rollers 28, the ends 29 of which are j ournalled in bearings 30,. secured to the rail by bolts 31 passing through the horizontal and vertical webs. The rollers 28 4are reduced as shown at 32. directly opposite the fia abrasive member to aid in keeping them clear of deposits of abrased particles of metal and abrasive material, thereby aiding4 -their axis of rotation substantially in line with the axis of rotation of the main feed rollers 28. rlhus should a rod be placed in contact `With the main stationary feed rollers 28, it Will be in substantial contact with vtheauxiliary stationary feed rollers 35.

lt is found in practice that the rods before polishing are not always of .perfect circular form, and often consist of rough black rolled Wrought iron and steed bars, or black roll pipe. Accordingly my improved device is used for truing up and'removing the scale. To resiliently urge the rod to be polished against the stationary feed rollers, and

to permit of the adjustment of diderent diameters of rod, and yet permit of a free floating Contact, heads d0. rlhere is one of these adjustable guidin heads preferably located opposite each of the auxiliary stationary feed rollers 35, and also one to either side of the abra-v sive member and opposite to each of the end portion of the main stationary feed rollers Q8. The adjustable'guiding heads comprise adjustable feed rollers al, jonrnalled on shafts 42 secured in holes i3 lof housings le rocking1 on pins 45 in supporting bracket d6. 'llhe brackets are adjustably secured to the rail by bolts passing throughslots 5l in the brackets, and threaded into threaded holes 52 in lugs 53 integrally formed on the rail. tWashers 54 received under the heads of the bolts aid in firmly ciamping the brackets in place. rlhe housings with rollers mounted therein and rocking on pins 45, provide for slight variations in the diameter and inequalities in the rod. Resilient contact bet-Ween the rollers and rod is had as by means of springs 55 received between the upper ends of the housings andthe supporting. brackets d6 and about studs 56, having reduced shanks passingthrough holes 57 in the housing and having their ends riveted over as shown at 58. The studs pass through slots 59 in the brackets and have thumb nuts 6G received overthe outer threaded end 6l for limiting' the movement of 'the adjustable rollers d toward the stationary feed rollers 35 and 28. Adjustable stop screws 62, threaded in threaded hol-es in the brackets', limit the movement of the housing away from the stationary feed rollers by contacting; cross ribs 64e thereof.

For adjusting the stationary rollers housings 38. 'llhe ll provide adjustable guiding,

nemesi to different diameters of rods and to late the amount of materialremoved, tiro feed rail is made to slide to and from the abrasive element, by mounting the same on a laterally swinging bracket 70, having justing screw 71 received in threaded bearing 72 therein. A reduced end 73 on the screw is received in hole 74, in the rail. 'lhe screw is held against endwise movement as by having a shoulder 75 received against the outer surface of the vertical web of the rail and collar 7 6 secured to the reduced end as by pin 7T, bearing against the inner surface of the web. 'llhe hand Wheel 78 secured to the outer end of the screw provides means i for manually operating the saine. rlhe rail 1s guided in its lateral movement by stud shafts 8O secured 1n the rail and sliding in bearings 8l in vert-ical plate 82 of braclut 72. Bolts 84: having Washers 85 received iinder their heads, and passing through Vsl 86 in horizontal support-in web 87 of the bracket and threaded into t readed holes 88 in the rail securely lock the same in position.

Means are provided for feedingn the rods, past the abrasive element. When the several parts of my device are so adjusted as to bring the rods into Contact with the 'fast moving abrasive element, a rotary motion is imparted thereto. rlhere is no tendency for the rods to feed to the right or left. if the axis of the abrasive element is] in axial alignment With the axis of rotation of the rod. lf, however, the rod is brought out of axial alignment, in a vertical plane, the abrasive element will feed the rod in such direction, dependent on whether it. is inclined to the right or left. The greater the d e of inclination the greater will be the rate of feed. rlhe bracket 72 for supporting the rail is so mounted as to permit the adjustment of its inclination. l have herein shown the inclination as being towards the right as by mounting' the bracket, on a pivot bc 90 passing through hole 8l, in depending plate 92, of the adjustable bracket and threaded into threaded hole 93 of stationary bracket Qa'secured to the main frame by bolts 95. 'lhe adjustable bracket 7 2 is clamped in adjusted position by bolt and also by clamp bolt 96 passing through an arc slot 9i" a threaded into hole 98 in pendant 99 of s; i tionary bracket 9d. Tfilashers 100 under the bearing 123, and adjusting r,nut 124 here'- inafter described. Bell cranks 130 having flyballs 131 formed on the outer ends thereof, and received in slots 132 in a flange 133 integrally formed With the gear 120, rock on pins 134. Round contact ends f ofthe bell-cranks engage surface 136 of an endwise'slidable friction sleeve 137 which is caused to rotate with shaft 122 as lby pin138ffixed in the shaft having slidable connection in keyway 139 in the sleeve. A friction plate 14() is formed on the sleeve for contacting discI 141 of friction material such as felt received between the said plateand a plane surface 142 located on the housing l115. For normally urging the fly balls to a collapsed relation I provide spring n 145 in bore 146 of the friction sleeve. The pressure exerted by the spring against the outward movement lf the fly balls is controlled by the adjusting nut 124 as by hay ing a threaded shank 147 formed thereonr and received in a threaded bore 148 of the housing. v

In practice the stationary feed rollers are adjusted to the proper4 distance from the abrasive element by manipulating the hand wheel 78 and clamping the rail in place by esV clamp bolts 84. The adjustable guiding heads are then adjusted and clamped in place by clamp bolts thus bringing the adjustable feed rollers in contact with the circular rod for holding it against the stationary feed rollers. To compensate for such inequalities of the rod as there may be, the stop screvvs-62, are placed in the proper position, the thumb nuts having been previouslyadjusted to regulate the tension on rollers 41 by spring 55.

The rail is now adjusted to the proper inclination consistent with the rate of feed desired, and clamped in radjusted position by pivot bolt and clamp bolt 96. The adjustingl nut 124 is now adjusted to give the proper tension on spring 145, to regulate the speed of rotation of the rod, While Worked upon, through the medium of controlling mechanism connected With the stationary'feed rollers." v

In practice it is usual to feed the rods from the left to the right (see Fig. 3 arrow a). The operatb' stands at the left end of the rail feeding the rods into the s ace 150, formed betalingen . rollers 41, 28 andD 35. The rods are pushed forward into contact' with the abrasivelement moving with high speed in the direction of the arrow b, (see Figs. 4 and 5), which imparts rotary motion thereto. by the pressure of theabrasive on its outer surface. The surface. speed of the the finish. to inequalities. the speed i of the rod is sometimes retarded or increased. The finish ,producedis therefore not uniform. Tl1econt.rolling mechanism regulates the speed of rotation by the centripctal action ofjthe flyballs 131 driven through lthe train of gears 111, 112 and 120, whenl the-'speed increases beyond a de- Sii-ed point. The flyballs act -to add a frictional resistance through the medium of bell cranks 30, and endwise slidablesleeve 137, the friction plate 140 thereon. contacting friction dislc 141. nf'hichfin turn con-` tacts plane surface 142, on'housing' 115. thus retarding the speed of the feed rollers vand the rod. The greater the speed the greater the pressure exerted by the'flyballs against the frictionv plates. The momentary increases and decreasesv in the speed of rotation of the rod are thus effectively guarded against. f v rIhe rail being inclined downwardly to the right and out of axial alignment. with the axis of rotation of the abrasive element, the rod is fed along automatically, every pgrtion of 'its surface being successively presented to be worked upon. The momentum of the rod is sufficient to carry it beyond the rollers after the abrasive element is passed. y Y

It will be noted that it is unnecessary to employ skilled Workmen.Y The position of the operator is such as to provide a maximum of safety. he being stationed at a considerable distance from the abrasive element and further his hands do not touch-the rods While they are being worked upon.

lVhatI claim as new and desire to. secure b vLetters Patent is: l 1. In a polishing machine, a main frame, an abrasive element, operatively" mounted in said frame, an inclinable Work support adjustably secured to said frame, ycomprising a rail, a plurality offguide rollers mounted on said rail, av plurality of guiding heads adjustably mounted on said rail, coacting with said guide rollers, means for adjusting said Work support toward and from said abrasive element, and means for inclining said Work suppo 'Y 2-.n a polishing machine, a main frame,

to bel capable of having motion imparted thereto by the action oi said abrasive eiement on said work means for adjusting said work support toward and from the said abrasive element. means for adjustingr the inclination ot said work-support for controlling the rate ot' 'feed of the work, means tor clamping said work support in adjusted position, a regulating and controlling instrumentality mounted on said work support, and a drivingr connection between said rollers and said regulating and controlling instrumentality Afor regulating thc speed 0i' rotation oi the work carried on said rollers.

In a polishiimr machine, a work support, comprising` a supporting rail, a plurality of main Jfeed rollers, bearings for said feed rollers, secured to said rail, a plurality ot auxiliary feed rollers, bearings for said auxiliary Jfeed rollers secured to said rail, and said main feed rollers and auxiliary feed rollers so arranged as to have their work contacting surfaces in alignment with one another.

et. In a polishing machine, a work support, comprising` a supporting raila plurality of main stationary feed rollers, bearings for said feed rollers and secured to said rail, a plurality of auxiliary stationary feed rollers, bearings for said auxiliary t'eed rollers mounted on said rail, said main 'feed rollers and auxiliary feed rollers so arranged as to be in axial alignment with one another` a plurality of adjustable guidets to which said housings ing heads, comprising adjustable feed rollers, shafts on which said adjustable feed .rollers are journalled, rockable housings in which said shafts are secured, pins on which said housings are adapted to rock toward and from the stationary feed rollers, brackare rockably secured, said brackets adjustably secured to said supporting rail, a spring member between the said housings, and Asaid brackets, adjusting means for adjusting' the said housings toward and trom the stationary feed rollers, and a limitingmeans `for limiting the movement-ot the said brackets. l

5. In a polishing machine/'zi guiding head comprising a plurality of feed rollers, shafts on which said feed rollers are journalled, a rockable housing in which said shafts are secured, a pin on which said housingr has rocking! movement, a bracket in which said pin is secured and 'haring a slot therein, a stud in said rockable housing, adapted' to project through said slot, a spring secured about said stud and between said bracket and said housing, a threaded portion Yformed on the outer end of said stud, a thumb uut reccired over said threaded portion for adjusting said rockable housing toward and from said bracket, and an adjusting screw in said bracket adapted to limit the movement of said housing toward.

said bracket.

ELMER F. Rll.

said housing toward

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