US2102092A - Abrading tool - Google Patents

Description

Dec. 14, 1937. v -T. F, QUIGLEY ABRADING TOOL 42 Sheets-,Sheet l Filed Nov. 3', 1927 il il T. F'. QUIGLEY AADING TooL 2 Sheets-.Shet 2 Filed Nov. 5,' 1927 vIA-WENTOR.

. 'Patented Dec. 14, .1937' attacca me 'room Thos F. igley, @Beveland @m0, 98981101', by

mesme asaicnts. to Micromatic Honeilorration, a corporation ci Michigan Application November 3, 2927, Serial 126.230,799

' 9 Claims.

l vThis' invention relates-to honing or abrading devices or tools Aparticularly adapted to' and intended for the honing or finishing of cylinders,

and one of the objects of the invention is toprovide an improved device in which the shoes or abrading members areadjnstable radially to fit cylinders of different diameters,s and longitudinally to grind a hole that is exactly cylindrical and of equal diameter throughout its length.

Afurther object of the invention is to provide improved mearfs for rotating the tool and to start or stop relative rotation between the parts.r

A further object of the invention is to provide improved means for `adjusting the abrading members, by the operation of a pair of adjusting cones contained in a hollow mandrel which car-l ries said members. The driving devices include a planetary gearing the driving member of which is operated by a shank to which the power is applied and the driven member of which is connected to the mandrel. Associated with this is a clamping device which can be operated to start or stop the transmission.

The. device'inclu'des universal joints between the mandrel and the driving device and between the screw which operates the cones and the driving devices, so that the latter can take a position out of alignment with the active parts of the tool. I A further object of this invention is to provide an improved method of taking care of the unequal wear of the abrading surfaces of the shoes, by permitting a slight rocking action of the iiutefb adjusting cones, thereby leveling said abrading surface and grinding a hole that is exactly cylin` drical and of equal diameter throughout its length.

With these and other objects in view one form of the device is hereinafter described and is illustrated in the accompanying drawings in which Fig. 1 is a longitudinal section through the tool; Fig. 2 is a cross section on line 2-2 of Fig. 1; Fig. 3 is a;- cross section on line 3-3 of Fig. 1; Fig.

view ofthe tool. Fig. l11 is an-elevation of the lower, end of the driving spindle shown in section :in Fig. l; Figs. 12 and 13 are externalviews of .the expanding member shown inr Fig. 1 and '55 shows the same contracted and extended irespec 4 is a cross section on line 4-4 of Fig. 3, and Fig.

tively. Fig. 14 is a side elevation of one of the shoes.,

Referring specifically tothe drawings, l is the abrasive material fastened to shoe 2 which is held in place in slots in the mandrel 9 by the end plates il and the screws 5. The shoes 2 have -pins 9 fastened to them and passing through holes in mandrel 3 to contact with the cones or utedJ tapered pieces 1 and 8. Part 8 ts and telescopes into part 1 and the two,pieces are held together bythe screws 9. Springs I9 are fastened to shoes 2 by screw il and to the mandrel 3 by screw l2. ,Mandrel 9 has ears i9 into which are screwed pins i4 which fit into holes in the ring l5. Similar pins in similar lugs ihof th extension tube i1 t at right angles, to the pins it into similar holes in ring lb, thus forming va universal joint. The rod i9 has`4 right and left handed'threads formed on it and is fastened to 'block i9 by pin 29 as best seen in .Figu're 1. `The slotted collar 2i fastened to mandrel 9 by screws 22 and retained in the groove formed on block i9' prevents any end-wise motion of said block i9 which has a lug 29 on which sleeve 2d is loosely pivoted by means of pin 25. Sleeve 24 is bored out slightly greater than the diameter of lug 23 to allow for a slight motion and is fastened to rod 28 by pin 21. section.

Extension tube I1 has pins 11a screwed into. the upper end of it engaging with bayonet slots 28 in the lower part of shank 29 which permits easy disconnection and removal of the hone. The shank 29 has a taper on` the upper end of it to iit a tapered socket on the machine, and is. recessed on the other end to take. the drive pinion 30, bushings 3l and Sla and retaining collar 33 which is vfastened by screws, 32 to' shank 29.. Pinion 30 meshes with an idler pinion 34 which in turn meshes with the internal gear 35. Idler pinion 34 rotates freely onpinv 36'and the internal gear 35 is fastened to the' sleeve 31 by' screws 38. The outer sleeve 31 has a bronze bushing 33a pressed into it and is; free to rotate on shank 29 and isl prevented from endwise motion by the internal gear 35 fastenedA to one end of it and the nut.39 which is screwed onto and against a shoulder on shank 29. A groovenear the up- Rotl' 26 is square in per `end of sleeve 31 carries the clamping arms 49 and 40a which are capable of being drawn together byV means of the taper seated lever 4l which. rotates around thescrew 42 fastened to arm 40a by nuts 43 and 43a. This lever also carriespin 44 which engages pin 45 in arm 40 and prevents the lever frqmmoving too-far backchine and prevents rotation.

A micrometer adjustment consisting of the sleeve 48', positive stop block 49 and ratchet 50 vis mounted on the shank 29 Ajust below the taper.

The ratchet is secured to shank 29 by taper pin 5I and has a screw thread formed on its outer surface to take the Anut 52 which is secured in 'place by screw 53.

The pawl 54 is fastened to the positive stop block 49 by the screw 55 around which it pivots and is kept in engagement with ratchet 50 by spring 56 which ts over asmall pin 51 on pawl 54 and into a hole in the side of slot 58 milled on the side of stop block 49 to receive the pawl 54.

The positive stop block 49 also carries the pin 59 which projects far enough from. its under surface to engage a similar pin 60 screwed into and projecting from sleeve 31. The sleeve 48 is capable of being turned'thru 360 or one complete turn and carries the screw 6I which projects into the recess 58 and engages pawl 54.

The action of the tool is as follows: 'I'he tool as shown in Fig. 1 rotates as a unit, there being no relative' motion between the parts as long as armsl 40'and 40a are not clampedI tight against sleeve 31.

After the hone is inserted into an engine cylinder it must be expanded a sufiicient amount to abrade the inner surface of said cylinder. This result is obtained by turning sleeve 48, thereby` depressing pawl 54 by means of screw 6I and releasing same from the ratchet 50, and stop block 49 can then be rotated as a unit with the sleeve 48 carrying pin 59 backward or away from pin 60 according to the adjustment desired. As soon as the sleeve stops moving pawl 54 is again forced into engagement with ratchet 50 thereby locking stop block 49 to ratchet 50. If we now clamp sleeve 31 between the arms 46 and 40m,

holding it stationary, and revolve shank 29, the ratchet 59 will revolve with it, carrying the block 49 and pin 59 as a unit. These parts can only rotate till pin 59 strikes against pin 69, the arc of rotation being determined by the amount pin 59 and 60 are separated by movement oi' sleeve 48, and this determines the amount the hone is expanded as hereinafter described. When pin 59 strikes pin 69th`e operator releases sleeve 31 and the tool again rotates as a unit.

When sleeve 31 is held stationary the continued motion 'of part 29 causes idler pinion 34 to rotate on the internal gear 35, driving pinion 30, rod 26, block I9 and screw I8 in or out depending on the rotation. The shoes are thus either expanded or contracted by means oi the pins 6 contacting with the parts 1 and 8 which are iiuted right hand and left hand to permit the shoes to rock slightly.

It will be noticed that when the shell 31 is held by the clamp 40 and 40a the driving .pinion 30 is rotated, turning the squared rod.26 to expand or adjust the cones away from each other until the shoes press against the surface of the cylinder, after which the motionpicks up the tool and rotates the same in the cylinder, the drive then being through the shank 29, and pins I1 and I1a to the extension tube I1 and the head of the tool. The universal joints permitl lateral variation of the axis, the squared rod 26 having a sliding lit in the pinion 30 to permit this.

An important feature of this invention resides in the tapered parts 1 and 8 whichtelescope with each other and are guided by the head of the turning with respect to each other. The tapered ends are uted and it'will be noted that surfaces A and B slant in opposite directions. Now if the abrading material wears faster on one end than on the other the pressure of pins 6 on surfaces A and B" will vary and due to their opposite slants, this pressure will cause the expanding members to rotate or rock slightly, equalizing the pressure and causing the abrading material to grind a. hole that is the same diameter throughout its length. To permit this action, the ends 2a of the shoes 2 are machined to a true radius from the middle of their center line, as shown in Fig. 14, allowing enough clearance so that the shoes can move' in or out and also rock in `or out at respective ends without any end movement so that lthey cannot change position endwise when the tool comes to a sudden stop or reverse. This does not allow the shoes to crawl or move endwise on the tapered members, but holds the set positive, and by reason of the contact of the flutes against the beveled sides of the pins one shoe cannot deiiect from the wall being ground but all the shoes have to move or are held out together. The rocking motion referred to is permitted by the slight turning oi the cones, which is permitted by the lost motion in the train of gearing 30, 34 and 35. The inner ends of the pins 6 have a slight clearance in the flutes, to permit the slight turning movement of the cones, and by such movement, when one set l of pins moves in slightly the other xnoves out 31 backward by hand to the extent permitted by the pin 60, that is..'unti1 it strikes the pin 59,

the shank 29 standing still and the reverse drive being from the internal gear 35 thru idler 34 to pinion 30 and thence to the cones by means of rod 26, the right and lett screws.

It will readily be seen that the arrangement of parts affords an efilcient and ready means of adjusting the amount of the cut and expanding the cutting members to a size to guarantee this amount.

The device is capable of extensive modifications within the scope of the following claims.

I claim:

1. In an abrading tool, -the combination of a hollow mandrel, a set of abrading members adjustable radially therein, pins connected to said members and extending into the mandrel, and cones in the mandrel engaging the inner ends of the pins, the cones being uted where they en- .gage the pins, thereby permitting self-adjustment for equalizing the pressures on the ends oi the abrading members. y

2. In an abrading tool, the combination of a hollow mandrel, a set of radially adjustable abrading members carried thereby, a pair oi cones adjustable in the mandrel and operatively connected .to the said members to adjust the same,

said cones having telescopic mounting upon each means including an oppositely threaded screw on which the cones are mounted.

4. The combination stated in claim 2, the telescopic mounting including means to prevent relatixe rotation oi the cones with respect to each ot er..

5. In an abrading tool having ran abrading head, the combination o f au abrading element radially adjustable in said head, an adjusting j Y 'amaooa 3" cone axially and rotatively' movable in' said? head and having a surface for engaging said element,

' means for effecting axial movement of said cone lin said head to adjust saidelement, said surface being 'so' formed that rotative movement of sa'id cone provides a furtheradjustment of :said

element. Y

and having a surface for engaging 'said element,

15 surface offset laterally from a center linethrough means for eiecting axial movementoi said cone in said headf to adjust said element, said cone being engaged by said element at a point on said the cone and element so that rotative movement said element. l s

o f said bone provides a Iurther adjustmentl of 7. In an abrading ltool having anv abrading head, the combination of an' abrading element radially adjustable in said'head, a pair oi cones points spaced along the body'thereof, means for eil'ecting axial movement oi said stones in said head to adjust said element, said surfaces being so formed that rotative movement of said cones provides anl endwise tilting adjustment of said l radially adjustable in' said head, a pair of cones axially and rotatively movable. in said head and having surfaces=for engaging said element at points spaced along the body thereof, means for `eii'ecting axial movement of said stones in said head to adjust said element, said surfaces of' said conesbeing respectively opposltely ilted so that a rotative movement of said cones provides THOMAS' F. QmGLnY.

' an endwise vtilting adjustment oi' said element. 20

Images