US3175332A

US3175332A - Work table and movable workholder therefor

Info

Publication number: US3175332A
Application number: US275430A
Authority: US
Inventors: Leopold F Glaude
Original assignee: Individual
Current assignee: Individual
Priority date: 1963-04-24
Filing date: 1963-04-24
Publication date: 1965-03-30
Anticipated expiration: 1982-03-30

Description

March 30, 1965 F. GLAUDE 3,175,332

WORK TABLE AND MOVABLE WORKHOLDER THEREFOR Filed April 24, 1963 4 Sheets-Sheet l I II f @12- 5 7 IO fi l ///////4 .i

27 H I? l7 1 I l I "LLHHiH'iiiH1I i INVENTOR. LEOPOLD F. GLAUDE xmom N 4 Sheets-Sheet 2 L. F. GLAUDE March 30, 1965 woax TABLE AND MOVABLE WORKHOLDER THEREFOR Filed April 24, 1963 Qwwa March 30, 1965 1.. F. GLAUDE 3,175,332

WORK TABLE AND MOVABLE WORKHOLDER THEREFOR Filed April 24, 1965 4 Sheets-Sheet 5 \W MHMF INVENTOR. Lao ow E GLAUDE March 30, 1965 L. F. GLAUDE WORK TABLE AND MOVABLE WORKHOLDER THEREFOR 4 Sheets-Sheet 4 Filed April 24, 1963 INVENTOR. LEOPOLD F. GLAUDE BY MQKW United States Patent 3,175,332 WORK TABLE AND MUVABLE WGRKHOLDER THEREFUR Leopold F. Glaude, 2314 N. Kiipatricit, Chicago 39, Ill. Filed Apr. 24, 1963, Ser. No. 275,430 7 (Ilaims. (Cl. 5124G) This invention relates to a machine tool and, more particularly, to a power machine tool which is particuiarly adapted for use in connection with the working of metal or other parts by means of a rotary abrasive grinding disc or wheel, or other device.

An object of the present invention is to provide a new and improved and relatively simple machine tool for use in the working of metal or other parts by means of a rotary abrasive grinding disc or wheel, or other device.

Heretofore in the art of machine tools for the grinding of metal or other objects, it has been customary to provide work-holding means on the machine so designed, constructed and arranged that the means for moving or adjusting the work on and relative to the bed of the machine have been relatively complicated and expensive in construction and difficult to operate without special knowledge and skill.

An object of the present invention is, therefore, to provide a new and improved machine tool embodying means for adjusting the work relative to the bed of the machine, and relative to an abrasive grinding disc or other device, which is relatively simple and inexpensive in construction and simple and easy to operate, without the need for or exercise of any special skill, so that the new machine tool may be easily operated by home work shop operators, and others.

Another object of the invention is to provide in the new machine tool a novel combination of operating means for moving the work-holding table laterally relative to the bed of the machine and a novel means, in combination therewith, additional operating means for moving the work-holding table longitudinally relative to the bed of the machine, and relative to an abrasive grinding disc or other device used in conjunction therewith.

An additional object of the invention is to provide in the new machine tool a novel construction and arrangement for pivotally and adjustably mounting the bed of the machine, the work-holding table, and the operating means for moving the work-holding table relative to the bed of the machine, on the supporting frame of the machine, so that the entire assembly may be adjusted relative to an abrasive grinding disc or other device.

Heretofore in the art of machine tools employing a rotary abrasive grinding disc it has been customary to have the parts so constructed and arranged that the rotary abrasive grinding disc would engage a substantial part of one lateral surface of the work, in the form of a metal or like object, during a grinding, beveling or like operation, and would grind away a substantial por tion thereof, even when it was desired to grind or bevel only an edge portion of the work.

A further object of the present invention is to provide a new and improved machine tool embodying a grinding machine which may be used for grinding, beveling and like operations on metal objects employing a rotary abrasive grinding disc or wheel, and in which the rotary abrasive grinding disc may be adjusted relative to the work-holding means in such a manner that only a limited part of the metal object or work being ground or abraded will be engaged by the rotary abrasive grinding disc or wheel.

Other objects will appear hereinafter.

3,175,332 Patented Mar. 30, 1965 In the drawings:

FIG. 1 is a front elevational view of a machine tool embodying the present invention;

FIG. 2 is a top plan View thereof on line 22 in FIG. 1;

FIG. 3 is an end elevational view as seen from the right-hand end in FIGS. 1 and 2;

FIG. 4 is a view on line 4-4 in FIG. 2, partly in elevation and partly in section;

FIG. 5 is an end elevational view on line 5-5 in FIG. 2;

d6. 6 is an enlarged transverse sectional detail view on line 66 in FIG. 2;

FIG. 7 is an enlarged transverse sectional detail view on line 77 in FIG. 2;

FIG. 8 is an enlarged transverse sectional view, partly in elevation, on line 88 in FIG. 2; and

FIG. 9 is an exploded perspective view of the major parts embodied in the invention.

A preferred embodiment of the present invention is illustrated in the drawings, wherein 'it is generally indicated at 10, and comprises a supporting frame, generally indicated at 43, which may be of any suitable construction. A horizontally extending bed 11 is mounted on the supporting frame 43 and a tool in the form of a power-driven rotary abrasive grinding disc or head 12 is arranged over the machine. A fiat horizontally extending and generally rectangular-shaped work-holding table 13 is movably mounted on the bed 11 for movement relative thereto, in a manner which will be described hereinafter, and this work-holding table 13 has a longitudinally extending channel or groove 14 formed therein for the reception of a work-holding unit (not shown) but which may be of any suitable type for holding a piece of metal work, or other material, on the work-holding table 13, and for movement therewith relative to the abrasive grinding disc head 12 or similar device. The new machine tool includes a novel means for operating or moving the work-holding table 13 longitudinally relative to the bed 11, and this operating means includes a rack member 15 which is attached to one lateral edge of the work-holding table 13, as by screws 17 (FIG. 2). This rack member 13 includes a row of rack teeth 16 on its bottom edge and the rack member 1546 projects longitudinally of the table bed 11, and to one side thereof, as shown in FIGS. 1 and 2 of the drawings.

A shaft 18 extends transversely and horizontally across the table bed 11, at one side thereof, as best shown in' FIG. 2 of the drawings, and this shaft 18 is mounted in suitable bearing members 19 which are carried by the bed 11 of the machine, one of the bearing supporting members 19 being arranged adjacent each end of the shaft 18. A rack guiding unit, comprised of a pair of spaced parallel upright guide members 240 is provided for the rack 15-16, and -a cap plate member 23 extends between these upright plate members 20 and is attached to the upper surfaces thereof, as by screws 24, as best shown in FIG. 7, the rack 15-16 extends between the guide members 20 below the cap plate 23. The shaft 18 extends through aligned openings 58 in the rack guide members 20 (FIGS. 6 and 7) and each of the rack guide members 26 has a generally rectangular-shaped notch or recess formed in its inner surface for the reception of one side arm portion 27 of a generally U-shaped operating member 25 (FIGS. 5 and 9) which is adapted 3 rack gear 22 meshes with the teeth 16 of the rack -16 (FIG. 7).

A hand wheel 21 is mounted on the shaft 18, at the front of the machine, as shown in FIGS. 1 and 2, and the shaft 18 is adapted to be rotated by manipulation of the hand wheel 21 which, in turn, acts through the rack gear 22 to manipulate the rack 15-16 and the workholding table relative to the table bed 11.

Hence, it will be seen that the shaft 18, hand wheel 21, rack gear 22 and rack 15-16 provide an opening means for moving the Work-holding table 13 longitudinally on and relative to the bed 11 of the new machine.

In addition to the aforesaid novel means 18-21-22-16 for operating or moving the work-holding table 13 longitudinally relative to and across the bed 11, the present invention provides a second and additional novel operating means, for moving the work-holding table 13 laterally or transversely across and relative to the bed 11 of the machine, and this second operating means will now be described.

To this end, the present invention provides a generally U-shaped operating member 25, as best shown in FIG. 9, and which includes a front wall portion 26, and a pair of parallel side arm portions 27 which are arranged at the opposite ends of the front wall portion 26, the parallel side wall portions 27 being arranged at opposite ends of the work-holding table 13. A raised longitudinally extending guide rib 28 is provided on the front wall portion 26 of the U-shaped operating member 25, for a reason which will be described hereinafter.

A plurality of generally L-shaped guide bracket members 29, shown as being three in number, are attached to the upper surface of the work-holding table 13, adjacent one edge thereof, as shown in FIG. 9, and each of these bracket members 29 has a depending guide arm portion 30 which projects downwardly at one side of, and relative to one longitudinal edge, of the work-holding table 13. The longitudinally extending guide rib 28 is adapted to bear against and to engage an edge portion or wall 70 of the work-holding table 13 (FIG. 9). Thus, when the parts are arranged in position of use, as in FIGS. 1 and 2, the depending guide arms 39 of the bracket members 29 project downwardly over the upstanding longitudinally extending rib 28 which is provided on the front wall of the U-shaped operating member 25.

The table bed 11 has a pair of pivot members 31 mounted therein, at opposite sides thereof, and adjacent one end thereof, for reasons which will be pointed out presently.

The front wall 26 of the U-shaped operating member has a supporting arm 32 projecting laterally therefrom at one side thereof and this arm 32 has an attaching bracket portion 32a which is attached to the front wall portion 26 of the U-shaped operating member 25 (FIG. 9). A threaded bushing 33 is attached to the supporting arm 32, on the bottom surface thereof, by means of a pin 42, and an operating screw 34 projects through this threaded bushing 33 and has a hand wheel 39 mounted thereon at its outer or front end and at the front of the machine.

A supporting bracket 35 is attached to the table bed 11, at the front of the machine, and has a depending arm 38 thereon at its outer end, and this depending arm 38 has an opening therein for the reception of the operating screw 34. Thus, when the parts are arranged in position of use, the operating screw 34 projects through an opening in the depending arm 38 of the bracket 35 and is threaded into the threaded bushing 33.

An upright guide member 41 is attached to one side edge 37 of the bed 11 of the machine, at the front thereof, and this guide member 40 has a guide arm 41 projecting therefrom (FIG. 9).

A U-shaped pivot mounting member 71 is attached to the supporting frame 43 of the machine, at one end thereof, by means of U-shaped attaching brackets 44 and bolts 45, and this U-shaped pivot mounting member 71 has a pair of upstanding end walls 73 at the ends thereof, each of which has an opening 74 therein for the reception of one of the pivot members 31 on the bed 11 of the machine.

An L-shaped bracket 49 is attached to the bed 11 of the machine on the bottom surface thereof, as shown in FIG. 6, and this L-shaped bracket 49 has a depending arm 50 which extends into a U-shaped guide bracket member 51, which is attached, as by screws 52 to the depending flange 50 of the bracket 49. A micrometer adjusting screw 54, having a head 55, is rotatably mounted in a threaded bearing block 53 which is attached to the U-shaped bracket 51 (FIGS. 3 and 6).

The new machine tool 10 is shown as including an abrasive grinding disc head 12 which includes a supporting bracket 58 mounted on an upright supporting post 59 at one end of the machine. A hand lever 61 is mounted on a bracket 60 which is carried by the post 59. The bracket member 58 carries an arbor 67 on which an abrasive grinding disc 68 is mounted under a suitable protective shield 69. The abrasive grinding disc head 12 is adjustably mounted, as by a bolt 62, on the upright supporting post 59, and a clamping nut 63 is mounted on the bolt 62. An arcuate slot 64 is provided in the bracket structure 58 and a headed guide bolt 65 extends through the arcuate slot 64 into the upright supporting post 59.

In the use of the new machine tool the parts may be assembled as shown and when thus arranged a workholding block or clamp (not shown) may be mounted in the channel-shaped groove 14 in the Work-holding table 13 for movement with the work-holding table 13 relative to the bed 11 of the machine and relative to the abrasive grinding disc head 12 and abrasive grinding disc 68. When so arranged the work-holding table 13, and the work thereon, may be moved longitudinally relative to the bed 11 of the machine by manipulating the hand wheel 21, which acts through the shaft 18, the rack gear 22, and the rack 15-16 to slidably move the work-holding table 13 longitudinally relative to the bed 11 of the machine. During this operation the work-holding table 13 is slidably guided upon and relative to the U-shaped operating member 25 by the engagement of the depending arms 31 of the bracket members 29 over the upstanding guide rib- 28 on the U-shaped operating member 25.

In order to move the work-holding table 13, and the work carried thereby, transversely relative to and across the bed 11 of the machine, and below the abrasive grinding disc head 12-68-69, the hand wheel 39 may be manipulated so as to rotate the operating screw 34 in its mountings in the depending arm 38 of the supporting bracket 35, and in and relative to the threaded bushing 33, and this movement of the operating screw 34 acts, through the arm 32 and attached bracket portion 33, to slidably move the U-shaped operating member 25, and the work-holding table 13 transversely across and relative to the bed 11 of the machine, and below the abrasive grinding disc head 12-68-69. During this operation, the upstanding longitudinally extending guide rib 28 on the front wall 26 of the U-shaped operating member 25 engages the front edge portion or wall 71 of the work-holding table 13.

It will be noted that when the work-holding table 13 is thus slidably moved and guided laterally across and relative to the bed 11 of the machine, the guide bracket unit 20-23-24 for the rack 15-16 is moved with the U-shaped operating member 25 by reason of the fact that the guide bracket structure 20-23-24 for the rack 15-16 is carried by one arm 27 of the U-shaped operating member 25 (FIGS. 6 and 7).

Likewise, during this operation the arm 41 of the member 411, which is mounted on the front wall of the bed 11, acts as a guide for the supporting arm 32 which is carried by the U-shaped operating member 25.

It will be noted that the entire assembly of the bed 11 aivassa of the machine, the U-shaped operating member 25, and work-holding table 13, and the parts carried thereby, is pivotally mounted as a unit on the pivot members 31, which are pivotally mounted in the openings 72 in the upright arms 73 of the pivot mounting bracket 71. In order to pivotally adjust the entire assembly of the bed 11 of the machine, the U-shaped operating member 25, and the work-holding table 13, upon and relative to the supporting frame 43, and relative to the abrasive disc head l268-69, the micrometer screw 54-55 may be manipulated against the bottom of the bed 11 of the machine so as to pivot the entire assembly 11-25-13 on the pivot members 31, and relative to the pivot mounting bracket 21-72-7374, so as to manipulate the work-holding table 13 and the work carried thereby in a micrometric adjustment, relative to the abrasive disc head 126869.

The entire abrasive disc head 126869 may be adjusted on the upright supporting post 59 by loosening the nut 63 on the supporting bolt 62, and loosening the clamping bolt 65 in the slot 64, and manipulating the supporting structure 59 so as to vary the angle of inclination of the abrasive disc unit 12-68-69 relative to the work-holding table 11 and the work in the groove 14 thereof.

This adjustment of the abrasive disc unit 12458459 enables the abrasive grinding disc unit 12-68-69 to be moved in a vertical are relative to the work-holding table 13 and this enables a relatively small area or surface of the abrasive disc 68 to be brought into contact with the Work held in the work-holding groove 14 of the workholding table 13 and thus avoids the necessity for engaging a large surface area of one lateral face of the abrasive disc 68 with the work, and thereby avoids abrading away a large portion of one side face of the abrasive disc 63.

It will thus be seen from the foregoing description, considered in conjunction with the accompanying drawings, that the present invention provides a new and improved machine tool having the desirable advantages and characteristics, and accompanying its intended objects, including those hereinbefore pointed out and others which are inherent in the invention.

1 claim:

1. A work table structure for movably supporting work holding means in a predetermined relation relative to a rotary metal working tool, said work table structure comprising, in combination,

(1) a supporting frame structure including support means for supporting a rotary metal working tool and allowing a tilting motion of the arbor thereof, and for supporting a table bed;

(2) a lower bed member supported on said supporting frame structure, said table bed including two rotatable hand wheels mounted parallel to each other on the front end portion of said lower bed member;

(3) a three sided, open, intermediate frame unit including a guide rail member at the front thereof, said frame unit being reciprocably movable in a first direction in response to rotation of one of said hand wheels, and mounted above said bed member; and

(4) an upper table member, including work holding means thereon, said table member being disposed above said intermediate frame unit, resting on said guide rail member of said intermediate frame unit, reciprocable in a second direction perpendicular to said first direction, and including means thereon for allowing reciprocation in response to rotation of the the other of said hand wheels.

2. A table structure as defined in claim 1 in which said supporting frame structure includes means thereon for allowing said lower bed member and the units supported thereon to be inclined as a unit.

3. A table structure as defined in claim 1 in which one of said adjusting hand wheels includes a pinion gear and a shaft therefor attached thereto and mounted immovably relative to said hand wheel and wherein said means 6 for reciprocating said upper table member includes a rack element engageable with said pinion gear.

4. A table structure as defined in claim 1 which also includes means for reciprocably moving said pinion gear along said shaft upon movement of said upper table member, whereby said rack element and said pinion gear remain in operative engagement throughout the reciprocating cycle of said upper table member.

5. A work table and workholder therefor, comprising a supporting frame, a bed carried by the suporting frame, a workholding table carried by the said bed above and generally parallel thereto, operating means for moving the said work-holding table longitudinally relative to and across the said bed, and additional operating means for moving the said Work-holding table transversely across and relative to the said bed, the said means for moving the said work-holding table longitudinally relative to and across the said bed including a rack member carried by the said work-holding table at one side thereof, means carried by the said bed for moving the said rack member and the said work-holding table longitudinally relative to the said bed, the said means for moving the said workholding table transversely across and relative to the said bed including an operating member slidably mounted on the said bed and engageable with the said work-holding table for slidably moving the said work-holding table across and relative to the said bed, and means carried by the said bed for slidably moving the said operating member across and relative to the said bed, the said operating member being generally U-shaped in form and including a front wall portion adapted to engage a front edge portion of the said work-holding table, the said generally U-shaped operating member including :a pair of arm portions adapted to engage the end edges of the said workholding table, the said front Wall portion of the said U-shaped operating member having an upstanding longitudinally extending rib therein, and the said work-holding table having guide means thereon cooperating with the said upstanding longitudinally extending rib on the said front wall of the said U-shaped operating member for guiding the said work-holding table during slidable movement thereof longitudinally across and relative to the said bed.

6. A work table and workholder therefor, comprising a supporting frame, a bed carried by the supporting frame, a Work-holding table carried by the said bed above and generally parallel thereto, operating means for moving the said workholding table longitudinally relative to and across the said bed, and additional operating means for moving the said work-holding table transversely across and relative to the said bed, the said means for moving the said work-holding table longitudinally relative to and across the said bed including a rack member carried by the said work-holding table at one side thereof, means carried by the said bed for moving the said rack member and the said work-holding table longitudially relative to the said bed, the said means for moving the said work-holding table transversely across and relative to the said bed including an operating member slidably mounted on the said bed and engageable with the said work-holding table for slidably moving the said work-holding table across and relative to the said bed, and means carried by the said bed for slidably mov ing the said operating member across and relative to the said bed, and the said U-shaped operating member including guide bracket means carried by one arm of the said U-shaped operating member for guiding the same rack member during movement thereof.

7. A work table and workholder therefor, comprising a supporting frame, a bed carried by the supporting frame, a work-holding table carried by the said bed above and generally parallel thereto, operating means for moving the said work-holding table longitudinally relative to and across the said bed, and additional operating means for moving the said work-holding table transversely across and relative to the said bed, the said means for moving the said work-holding table longitudinally relative to and across the said bed including a rack member carried by the said work-holding table at one side thereof, means carried by the said bed for moving the said rack member and the said work-holding table longitudinally relative to the said bed, the said means for moving the said workholding table transversely across and relative to the said bedincluding an operating member slidably mounted on the said bed and engageable with the said work-holding table for slidably moving the said Work-holding table across and relative to the said bed, and means carried by the said bed for slidably moving the said operating member across and relative to the said bed, pivot mounting means for pivotally mounting the said bed at one end J. SPENCER OVERHOLSER, Examiner.

thereof for pivotal movement relative to the said supporting frame, and manually operable micrometer means for pivotally moving the said bed, the said Work-holding table, and the said operating means on the said pivot mounting means as a unit.

5 References Cited by the Exaer UNITED STATES PATENTS 351,214 10/86 Slade.

2,141,751 12/38 Hertlein 90-58 2,448,200 8/48 Walter 90-58 X 10 2,539,506 1/51 Bura.

2,862,410 12/58 Meyer.

2,933,022 4/60 Stark 9058 LESTER M. SWINGLE, Primary Examiner.

Claims

6. A WORK TABLE AND WORKHOLDER THEREFOR, COMPRISING A SUPPORTING FRAME, A BED CARRIER BY THE SUPPORTING FRAME, A WORK-HOLDING TABLE CARRIED BY THE SAID BED ABOVE AND GENERALLY PARALLEL THERETO, OPERATING MEANS FOR MOVING THE SAID WORK-HOLDING TABLE LONGITUDINALLY RELATIVE TO AND ACROSS THE BED, AND ADDITIONAL OPERATING MEANS FOR MOVING THE SAID WORK-HOLDING TABLE TRANSVERSELY ACROSS AND RELATIVE TO THE SAID BED, THE SAID MEANS FOR MOVING THE SAID WORK-HOLDING TABLE LONGITUDINALLY RELATIVE TO AND ACROSS THE SAID BED INCLUDING A RACK MEMBER CARRIED BY THE SAID WORK-HOLDING TABLE AT ONE SIDE THEREOF, MEANS CARRIED BY THE SAID BED FOR MOVING THE SAID RACK MEMBER AND THE SAID WORK-HOLDING TABLE LONGITUDINALLY RELATIVE TO THE SAID BED, THE SAID MEANS FOR MOVING THE SAID WORK-HOLDING TABLE TRANSVERSELY ACROSS AND RELATIVE TO THE SAID BED INCLUDING AN OPERATING MEMBER SLIDABLY MOUNTED ON THE SAID BED AND ENGAGEABLE WITH THE SAID WORK-HOLDING TABLE FOR SLIDABLY MOVING THE SAID WORK-HOLDING TABLE ACROSS AND RELATIVE TO THE SAID BED, AND MEANS CARRIED BY THE SAID BED FOR SLIDABLY MOVING THE SAID OPERATING MEMBER ACROSS AND RELATIVE TO THE SAID BED, AND THE SAID U-SHAPED OPERATING MEMBER INCLUDING GUIDE BRACKET MEANS CARRIED BY ONE ARM OF THE SAID U-SHAPED OPERATING MEMBER FOR GUIDING THE SAME RACK MEMBER DURING MOVEMENT THEREOF.