US2344385A - Grinding wheel tool - Google Patents

Description

n March 14, 1944. G. J. BEAUDET 2,344,335

GRINDI-NG WHEEL TOOL Filed Deo. 14, 1942 2 sheets-sheet 1 #www March 145 1944 G. J. BEAUDl-:T 2,344,385

GRINDING WHEEL TOOL Filed Deo. 14, 1942 2 Sheets-Sheet 2 HTTDRNEVJS.

Patented Mar. 14, 1.944

UNITED STATES ATENT OFFICE GRINDING WHEEL TOOL George J. Beaudet, Milwaukee, Wis., assignor of one-half to Max B. Stein, Chicago, Ill.

12 Claims.

This invention relates to improvements in grinding wheel tools, and more particularly to an adjustable tool for dressing and truing grinding wheels.

Tools have heretofore been provided for the dressing and truing of grinding wheels, but the prior tools were not arranged for gauged application to a Wheel periphery and proper use of the same required undue skill and touch.

With the above in mind it is a primary object of the present invention to provide a grinding wheel tool provided with an adjustable gauge collar which can be positioned against the edge of a grinding wheel table and moved thereagainst in operation, with the gauge collar being adjusted to roughly locate the work end of the tool adjacent the Wheel periphery.

A further object of the invention is to provide a grinding wheel tool having an adjustable gauge collar for roughly locating the work end of the tool adjacent the Wheel, together with a fine adjustment member for precisely locating the work end of the tool for proper cutting contact with the wheel.

A further object of the invention is to provide an adjustable grinding Wheel tool having a removable and` replaceable cutting element carrying sleeve.

A further object of the invention is to provide an adjustable grinding wheel tool having special provision for guided contact with a wheel for radius or irregular dressing operations.

A further object of the invention is to provide a grinding wheel tool which can be easily and accurately handled and manipulated, which is strong and durable, which is inexpensive to manufacture, and which is Well adapted for the purposes described.

With the above and other objects in view the invention consists of the improved grinding Wheel tool, and its parts and combinations as set forth in the claims', and all equivalents thereof.

In the accompanying drawings in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a perspective view of a grinding Wheel showing the improved tool properly adjusted and applied to the wheel for dressing or truing operations; l

Fig. 2 is an enlarged fragmentary plan view 0f the wheel and its associated table with the improved tool applied thereto in proper gauged and adjusted position;

tool taken on line 3 3 of Fig. 2, and on a larger scale;

Fig. 4 is a cross-sectional view taken on line 4-4 of Fig. 3;

Fig. 5 isan enlarged end view of the tool;

Fig. 6 is an enlarged fragmentary plan View of a grinding wheel and its associated table, with the table having an auxiliary guide plate applied thereto gauging and guiding a modified form of tool adapted for radius grinding;

Fig. 7 is a cross-sectional view taken on line -'l of Fig. 6;

Fig. 8 is a plan view similar to Fig. 2 only showingstill another modified form of grinding Wheel tool as applied to a grinding wheel; j

Fig. 9 is an enlarged longitudinal sectional View of the tool ofvFig. 8; and V Fig. 10 is a cross-sectional View taken on line I-Iil of Fig. 9.

Referring now more particularly to the drawings it will appear that a conventional form of motor-operated grinding Wheel is indicated by the numeral Il), there being mounted forwardly of a peripheralportion of the wheel a rigid table Il having an outer transverse straight edge portion l 2. After a grinding wheel of the type illustrated has been in service for a period of time its periphery may require dressing or truing at proper and regular intervals to increase its efliciency and economical use. For that purpose the improved tool, generally designated by the numeral I3, is adapted to be applied to the Wheel, there being special provision for the gauged and adjusted support of the tool in its application to the Wheel.

The improved tool I3 comprises an elongated cylindrical, boredbarrel I4 provided along the major extent of its outer surface with spacedapart ring grooves I5. Axially adjustably mounted on the barrel I4 is a gauge collar I6. Within a slot 29 in said gauge collar there is a locking lever ll pivotally mounted on a pinY I3 and having a knurled or ribbed operating finger I9 eX- tending outwardly of thev slot 20.-' Within the slot and engaging the lever I1 so as to yieldingly oppose movement of the same in one direction is a coiled spring 2|. The gauge collar I6 is located and firmly held in a desired position of axial adjustment o nthe barrel I4 by the manipulation of depressing the finger end of the lever I1 to retract a detent or rib 22 at the opposite inner end of the lever. Thereupon the collar may be freely moved along the barrel into adjacency with a selected ring groove I5. Release of manual pres- Fig. 3 is a longitudinal sectional view of the 55 sure on the lever finger I9 will permit the spring 2| to actuate the lever so as to then snap the lever detent 22 into the selected, registering ring groove, whereby the gauge collar will be locked in the desired longitudinal position on the barrel.

The bore 23 of the barrel I4 is, throughout its major extent, of uniform diameter. At the outer end said bore is slightly enlarged and is internally threaded, as at 24. At the inner end of the barrel said bore 23 extends into an enlarged tapered externally opening -cavity 25. `The stock of the barrel surrounding said cavity is knurled, to facilitate grasping, and is also split, as at 26, to form a slightly yielding outer sleeve.

A tapered tool element sleeve 21 is wedgingly but axially adjustably extended into the barrel cavity 25. Integral with the sleeve and projecting beyond the inner end of the barrel is an enlarged tool head 28 in the central portion of whose tapered face is rigidly mounted a projecting cutting element 29 such as a diamond chip or the like.

Closely regulated projection of the element sleeve 21 and cutting element 29 is accomplished by a screw 39. This screw, extended through the barrel bore 23, has an elongated stem 3| whose extremity abuts a stem 32 integral with the tool element sleeve and projecting into the barrel bore therefrom. The outer end of the screw has a knurled head 33 for manual operation, While the screw stem inwardly thereof has a threaded extent 34 in engagement with the bore internal threads 24.

If the improved tool is to be used for the dressing or truing of a grinding wheel, it is applied thereto in the manner shown in Figs. l and 2, it being understood that the wheel IE) is set into operation so as to revolve ata high rate of speed. It will be obvious that the inner end of the barrel I4 is rested flatly on the table II, and the gauge collar I6 is adjusted on the barrel so that the cutting element 29 is almost in contact with the periphery of the wheel I 0. Then, by turning the head 33 on the screw 30, the tool element sleeve 21 may be projected outwardly the desired distance so that the cutting element 29 will contact the wheel with the desired degree of pressure. During wheel dressing or truing operations the operator may hold the barrel portion of the tool with his hand, and the outer end of the barrel is knurled, as at 35, for convenience in handling the tool. The inner face of the gauge collar I6 should be in abutment with the outer straight edge portion I2 of the table II and the operator, while holding the tool, may move it back and forth along the table edge I2, so that the cutting element 29 will engage the Wheel as it is revolving to dress and true the same.

It will be appreciated that the cutting element 29 may in time be subjected to wear and will require replacement. The improved tool permits this at a minimum of expense. By turning inwardly on the screw 3D the tool element sleeve 21 may be projected entirely free of the split barrel sleeve. It is proposed that replacement cutting elements be furnished in similar sleeves 21 and a new cutting element carrying sleeve may be forcefully inserted into the yielding barrel sleeve to reequip the tool. Certain types of work may require different shaped cutting elements, and such elements may be embodied in replaceable or substitute element carrying sleeves.

A slight modication of the invention is illustrated in Figs. 6 and 7 wherein the tool is especially adapted for radius or special grinding of a wheel. The tool I3, save for the collar thereon and cutting element, is precisely similar to that illustrated and described in connection with the principal form of the invention. In fact the barrel and adjusting screw of the principal form of the invention may be used for the substitute elements of the modification. In lieu of the gauge collar I6 of the principal form of the invention, which may be removed axially from the end of the barrel, a gauge block I6 is slipped over the barrel, said gauge block having a circular opening therein. Threadably mounted through the top portion of the gauge block is a winged head adjusting screw 35. The gauge block I6' is held in roughly adjusted position on the barrel by the screw 35 which is turned inwardly to project it 'into a selected ring groove I5 in the barrel. The split inner end of the barrel has wedgingly inserted therein a cutting element sleeve carrying a projected cutting element 29.

For radius or special wheel grinding it may be desirable to cut grooves in the periphery of the wheel I0 or to provide shoulders or edges on the wheel periphery. To accomplish this properly and uniformly the tool must be guided in .its application to the grinding wheel. An auxiliary guide or pattern plate 31 is secured transversely to the free end portion of the wheel table II by clamps or other suitable means. This auxiliary plate 31 has its outer edge formed with grooves or serrations 38 in a desired pattern or arrangement. The gauge block I6 has a lower horizontal edge which rests on the top face of the auxiliary plate 31 when the block I3 is in its secured adjusted position on the barrel I4. Depending from the block I5 is a pin 39 which is adapted to follow the grooves or serlations 38 when the tool is manually moved back and forth across the surface of the auxiliary plate 31. This will therefore cause the cutting element 29', which has been nely adjusted through the screw 30 for proper cutting contact with the wheel I0, to move in the pattern of the grooves 38 so as to cut the desired congurations in the wheel periphery.

Still another form of grinding wheel tool is illustrated in Figs. 8 to 10, inclusive. There, the bored barrel I4' is provided along the major extent of its outer surface with screw threads I5. An apertured gauge block 40, whose aperture is provided with internal screw threads to mate with the barrel screw threads I5 is adjustably threaded onto the bored barrel I4. Threadably mounted through the top portion of the gauge block is a winged set screw 36. The gauge block 4t may be threaded 'onto the barrel to locate it in any desired roughly adjusted position, and by turning the set screw 36 inwardly to impinge against the barrel the gauge block may be secured in its adjusted position.

It will be noted that the gauge block 40 has an enlarged base or bottom portion which abuts the straight edge portion I 2 of the grinding wheel table l I when the tool is being used. The gauge block is so proportioned and weighted that the same will normally assume the position of Fig. 10 on the barrel so that when the tool is laid on a flat surface the base of the gauge block will prevent the tool from rolling.

In other respects the tool of Figs. 8 to 10, inclusive, is the same as that shown and described in connection with the principal form of the invention. The barrel ist contains an axial bore 23' which is slightly enlarged and internally threaded as at 24' to receive the threaded portion of the adjusting screw 30'. A tapered tool elementsleeve 21' is wedgingly but axially adjustably extended into the tapered cavity or fsocket 25 in the inner end of thebarrel. Mounted in the head end of the sleeve 27' is a projecting cutting element 29'. l

From the foregoing description it will be seen that the improved grinding wheel tool is of simple and novel construction, is susceptible of very delicate adjustments, is provided with adjustable gauge means for proper locationand guiding movement of the tool, and permits very accurate and precise wheel dressing, truing, or cutting operations Without undue skill on the part of the operator.

What is claimed as the invention is:

l. A tool, comprising a barrel, a cutting element axially movably carried by one end of the barrel, cutting element adjusting means carried by the barrel and engaging the cutting element to move the same in one direction and projecting from the other end of the barrel, and a gauge and guide member axially adjustably mounted on the barrel independently of the cutting element adjusting means.

2. A tool, comprising a barrel, a cutting element minutely axially adjustably carried by one end of the barrel and projecting therefrom, cutting element adjusting means carried by the barrel and engaging the cutting element to project the same, said adjusting means projecting from the opposite end of the barrel, and a gauge and guide member coarsely axially adjustably mounted on the barrel and independent of the cutting element adjusting means.

3. A tool, comprising an elongated, bored barrel, a portion of the barrel bore having screw threads, the inner end of the barrel being formed with a socket in communication with the barrel bore, a cutting element carrier projecting from the inner end of the barrel and having a shank frictionally engaging said socket, a threaded adjusting rod extending into the barrel bore from the outer end of the barrel and engaging the barrel bore threads and also contacting the cutting element carrier shank to adjustably project the same relative to its socket, and a gauge and guide member axially adjustably mounted on the barrel.

4. A tool, comprising an elongated, bored barrel, a portion of the barrel bore having screw threads, the inner end of the barrel being formed with a yielding socket in communication with the barrel bore, a cutting element carrier projecting from the inner end of the barrel and having a shank frictionally engaging said socket, a threaded adjusting rod extending into the barrel bore from the outer end of the barrel and engaging the barrel bore threads and also contacting the cutting element carrier shank to adjustably project the same relative to its socket, and an independent gauge and guide member axially adjustably mounted on the barrel.

5. A tool, comprising a barrel, a replaceable and interchangeable cutting element carrier removably and axially adjustably carried by one end of the barrel, carrier projecting means mounted in the barrel and engaging the carrier..

and a gauge and guide member axially adjustably and removably mounted on the barrel.

6. A grinding Wheel tool, comprising a manually engageable barrel having a work end, a cutting element adjustably carried by and projecting from the work end of the barrel, a gauge and guide collar independently adjustably secured about a selected portion of the barrel and engageable with a supportV surface to roughly position the work end of the barrel relative to a grinding wheel and movable along the support surface in guided relation thereto during operation of the tool, and a fine adjustment member operatively carried by the barrel and engaging the cutting element to accurately, selectively project the same relative to the grinding Wheel.

7. A tool comprising a cylindrical barrel having spaced, ring grooves formed therein, acutting element carrier removably and axially adjustably carried by one end of the barrel, carrier projecting means adjustably mounted in the barrel and engaging the carrier, a gauge and guide member axially movably mounted on the barrel, and a latch associated with the gauge and guide member and projectable into a selected ring groove to adjustably secure the gauge and guide member on a desired portion of the barrel.

8. A tool, comprising a cylindrical barrel having spaced, ring grooves formed therein, a cutting element carrier removably and `axially adjustably carried by one end of the barrel, carrier projecting means adjustably mounted in the barrel and engaging the carrier, a gauge and guide member axially movably mounted on the barrel, a manually operable latch movably mounted in the gauge and guide member and having a portion projectable into a selected ring groove to adjustably secure the gauge and guide member on a desired portion of the barrel, and spring means engaging the latch and resiliently urging it toward its projecting position.

9. A grinding wheel tool, comprising an elongated, bored barrel, a portion of the barrel bore having screw threads, the inner end of the barrel being formed with a yielding socket in communication with the barrel bore, a cutting element carrier projecting from the inner end of the barrel and having a shank tfrictionally engaging said socket, a, threaded adjusting rod extending into the barrel bore from the outer end of the barrel and engaging the barrel bore threads and also contacting the cutting element carrier shank to adjustably project the same relative to its socket, the exterior of the barrel being formed with spaced ring grooves therein, a gauge and guide collar axially adjustably and removably mounted on the barrel, a manually operable latch pivotally mounted in the gauge and guide collar and having a portion projectable into a selected ring groove to secure the gauge and guide colla-r on a desired portion of the barrel, and spring means engaging the latch and resiliently urging it towards its projecting portion.

10. A tool for use on a grinding device having a rigid, forwardly extending supporting table, comprising an auxiliary gauge and pattern plate adapted to be mounted fast on a surface portion of the table, an outer edge of the plate being of irregular contour for tool guiding purposes, a wheel cutting tool resting on the plate and including an elongated barrel and a Work end, a projecting cutting element adjustably carried by the work end of the barrel, a collar adjustably mounted on the barrel and contactable with said plate to properly locate the work end of the barrel relative to the-wheel, a fastener f for releasably holding the collar on a selected portion of the barrel, and a guide pin projecting from the collar and entering the irregular contour portion of the plate to guide the tool in a patterned movement as the tool is manually reciprocated across said plate.

11. A tool, comprising a cylindrical barrel havend portion, a, cutting element carrier removably and axially adjustably carried by the inner end of the barrel, a tapped gauge and guide block threadably mounted on the threaded portion of the barrel and axially adjustable thereon, said block being removable over the reduced outer end portion of the barreLand a set screw adjustably carried by the block and engageable with the barrel to rigidly secure the block in an ad- 10 justed position on the barrel.

GEORGE J. BEAUDET.

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