US2442495A

US2442495A - Beading or flaring machine which varies off-center position of tool

Info

Publication number: US2442495A
Application number: US502984A
Authority: US
Inventors: Henry E Hull; Emmett C Hartley
Original assignee: Parker Appliance Co
Current assignee: Parker Appliance Co
Priority date: 1943-09-18
Filing date: 1943-09-18
Publication date: 1948-06-01
Anticipated expiration: 1965-06-01

Description

BEADING QR FLARING MACHINE WHICH VARIES OFF-CENTER POSITION OF TOOL Filed Sept. 18, 1943 June 1', 1948- H. E. H-ULL ETAL I 4 Sheets-Sheet l June 1, 1948. H. E. HULL El 1. 2,442,495

BEADING OR FLARING MACHINE WHICH VARIES OFF-CENTER POSITION OF TOOL Filed Sept 18, 1945 4 Sheets-Sheet 2 June 1, 1948. HULL E 2,442,495

BEADING OR FLARING MACHINE WHICH VARIES OFF-CENTER POSITION OF TOOL Filed Sept. 18, 1943 4 Sheets-Sheet 3 Ig 4; /5 I June 1, 1948. I; ETAL 2,442,495

BEADING OR FLARING MACHINE WHICH VARIES OFF-CENTER POSITION OF TOOL Filed Sept. 18, 1943 4 Sheets-Sheet 4 Patented June 1, 1948 UNITED STATES PATENT OFFICE BEADING a FLARING MACHINE wnrcn VARIES OFF-CENTER POSITION 0F TOOL Application September 18, 1943, SerialNo. 502,984

18 Claims. 1

This invention is a machine for beading and flaring portions of tubular articles.

One of the objects of the invention is to provide a mechanism of simple construction, which is capable of use for operating a beading tool or a flaring tool, as desired. A further object is to provide a machine of the type described having a tool-carrying block of novel construction so constructed and arranged that it may be quickly and accurately adjusted to off-center position with respect to the work. A further object is to provide a simple means for adjustably varying the extent of said off-center adjustment.

The invention will be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawings:

Figure 1 is a side elevation of the machine constructed in accordance with the invention, parts being shown in section.

Figure 2 is an end View.

Figure 3 is a top plan view, with the driving motor removed.

Figure 4 is a detail sectional View on the line 4-4, Figure 1.

Figure 5 is a detail sectional view on the line 55, Figure 1.

Figure 6 is a detail sectional view illustrating a flaring die and flaring cone in place of the beading die and roller of the preceding figures.

Figure 7 is a side view of a modified form of the invention.

Figure 8 is a longitudinal sectional view of Figure 7.

Figure 9 is an end view of the modification illustrated by Figure '7.

Figure 1G is a cross-section on the line |i!l0, Figure 7.

Referring to the drawings, it designates a housing of any desired construction. Located within the housing is a spindle H, which is rotatively mounted in suitable anti-friction bearings i2, and operativel connected with the shaft 53 of a motor M, through suitable gearing G. The bearings l2 are maintained in separated relation by a sleeve M.

The spindle H is provided with an axial bore 15 of rectangular cross section, and slidingly mounted for axial movement therein are cam blocks it, each having a'plurality of inclined cam faces Ilia. Said cam blocks are of a cross section corresponding to that of the bore is, so that they will rotate with the spin-die, and extend the full width of the bore i5. Slidingi'y mounted between the cam blocks it is the tool-carrier block I1 of rectangular cross section, having cam faces I la complementa-l to the cam faces ita of the cam block. The sides of block i'l engage the sides of the bore [5, so that the block I! will also rotate with the spindle H. The block I! is also provided with a transverse, axially elongated slot l9, having an offset portion l9a to form a transverse opening approximately L-shape in cross section. A pin '20, which is anchored to the spindle, extends through the slot [9. The outer end of the housing is closed by a cover plate 2|.

The cam blocks [6 are connected in suitable manner to an interposed operating block 25, as by screws 26, so that said operating block and the cam members may be moved in unison. The operating block 25 is provided with a reduced portion 21 separated by annular shoulders 23. It is also provided with an axial bore 29, which is internally screw threaded to adjustably receive the threaded stem 3|] of a stop member S. Said stop member extends through said bore to a position adjacent the inner end of the tool block I1, and is held in any adjusted position by a lock nut 3|.

Rotatively mounted in a yoke 32 of the housing i0 is a lever L on which is mounted a supplemental yoke 33, held against rotation by means of a key 34 and a set screw 35. Mounted in the arms of the supplemental yoke 33 are studs 36, which extend toward each other into the space between the shoulders 28 of the operating block 25, and are provided with rollers 31 to engage said flanges. By means of this arrangement, it will be observed that sliding reciprocative movements may be imparted to the cam blocks by rocking the lever 33 in either direction, movement being imparted to the cam blocks by the action of the rollers 31 against the respective shoulders 28.

The bore I 8 of the block I! is internally threaded to receive an adjustable externally threaded adjusting sleeve 40, which is held in adjusted position by means of a lock nut 4|. A spring pressed detent 42 releasably engages a groove in the tube-working-tool spindle 43. Suitable bearings 44 are provided in the sleeve it to permit rotation of the block 11 and said sleeve with respect to the tool T.

Any suitable means may be employed for supporting the tube W in proper position with respeot to the tool. For purposes of illustration, a desirable type of mechanism is shown in the drawings. Referring more particularly to Figures 2 and 3, 50 designates a fixed jaw which is attached to the housing In in suitable manner, such as by means of bolts 5 I. Pivotally mounted dog 60, having a pin 6! complemental to a recess in the adjacent die block section. The dog 60 is mounted on a spring pressed member 62, the spring 63 of which urges it in a direction to maintain the pin 6| in engagement'with its recess. See Figure 6. When it is desired to remove the die from the jaw, themember 62. is

pressed inwardly against the tension of its spring 63, so as to disengage the pin Bl from the die.

Said member 62 is then rotated so that the dog clears the die. Each die is also preferably provided with a recess 66, to receive two rubber slugs 61, which are held in place by a plate 58 attached to the die members by screws 69. Each slug is of sufficient thickness and width to extend a slight distance axially beyond the end of its recess 66 so as to provide a clearance space to permit adjustable compression upon the block by the plate 58, by adjustment of the screws 69. In practice, the clamping jaws are opened by moving the lever 54 to the dotted line position of Figure 2 and are brought into clamping relation with the work W by movement of the lever to the full line position.

The sectional dies are preferably constructed so that the work W is clamped solely by the rubber slugs 6'5. In this manner, the flat surfaces of the dies engage one another to form a perfect die into which the work is expanded during beading or flaring, regardless of slight variations in the outside diameter of the work.

In operation, the lever L is moved to the extreme left dotted-line position-Figure l--which causes the cam blocks l6 and the tool-carrier block I 1 to move to the left to clear the work. While the lever and the tool-carrier block are thus positioned, the work may be disengaged from the clamping jaws. The lever L is then moved to the full-line position, indicated in Figure 1. During this movement the cam blocks l6 and the tool-carrier block I! travel together in an axial direction, because pin 20 in slot I!) will prevent any off-center movement of the block I1. Therefore, the cam surfaces I60. and Ha will interlock to prevent relative sliding movement. Relative axial movement of the tool-carrier block I! to the right, as viewed in Figure 1, is arrested when the pin 20 abuts against the end wall of slot l9 at a position opposite the offset portion [Scsee Figure 1. After the parts are thus positioned the working tool T is adjusted longitudinally by means of sleeve 30 and lock nut 4!, so that the projecting bead portion of the tool is directly opposite the groove 9 of the die. The sleeve 40 has a head C which contacts the inner face of the beading tool shoulder t. The end of the tube or work W is then positioned against the outer face of the heading tool shoulder t and clamped. In this last mentioned manner the end of the tube is properly located with respect to the die. The stop screw 38 is then adjusted to limit the extent of heading movement, and locked by the nut 3|; This adjustment prevents the operator from over-beading or overfiaring the tube, so as to excessively thin the tube wall at and adjacent to the beaded portion thereof.

Assuming that it is desired to form a bead or flare in a tubular member W, as illustrated in Figure 1, the extent of the beading or flaring is controlled by the distance between the adjacent portions of the stop member 30 and the tool block H. The motor M is then started, and the operator starts to move the lever L to the extreme right, as viewed in Figure 1. This last mentioned movement of the lever produces a relative movement of the cam blocks with respect to the tool block, because the offset portion lSa of the lot l9 provides clearance for radial movement of the tool block l1, thereby causing the cam surfaces i6a and I'Ia to react in such manner as to push the block I! downwardly off-center, so that the ofiset portion l9a moves over said pin. When the stop 38 engages the block I 1, no further axial movement of the tool-carrier block can occur, because relative movements of the blocks is and H are prevented. The motor causes the toolcarrier to rotate with the spindle and cam blocks, and the tool is rotatably mounted in the toolcarrier block, so that as the tool shifts off-center, the bead in the tube is progressively formed by a rolling action of the tool within the tubular member W. This rolling action produces a bead superior to that made if the tool were rigidly mounted in the tool-carrier-block and formed the bead by a sliding frictional action. The extent of beading, as above stated, is limited by the engagement of the end of the stop 30 with the tool block I I.

At the completion of the beading operation, the lever L is rocked to the left to the extreme dotted line position, as viewed in Figure 1, so as to recenter the tool and withdraw the same from within the work W, permitting removal of the completed beaded tube. After removal of the latter, the lever L is again rocked to the solid line position to condition the machine for positioning and clamping the next tube and the described operation repeated. If it is desired to flare the end of the tube, the tube-end is properly located with respect to the die by engaging said tube end with a conical surfaced tool T, as shown in Figure 6, while the lever L is in solid line position. Thereafter, the operations are identical with those previously described.

Referring more particularly to Figures '7 to 10, both inclusive, the spindle H is shown as constructed of two halves Ila and Nb, these halves being secured together by means of bolts llc. Instead of forming the L-slot IS in the tool-carrier block IT, as previously described, the lower half llb of the spindle H is provided with oppositely disposed recesses 11. A block b is located in each of the recesses a, being held in position by screws 0, so as to form diametrically opposite L-shape slots d. The complemental pin Zfia is mounted in the tool-carrier block H, with its end portions projected into the said slots d. The operation of these parts, however, is the same as that described in connection with the previously discussed figures of the drawings.

The advantages of the invention will be readily understood by those skilled in the art to which it belongs. For instance, it will be observed that off-center adjustment of the tool-carrier-block may be quickly and accurately effected. Another advantage is that the angular cross-section of the spindle bore, and the complemental cross sections of the cam and the tool-carrier-block effectively insures rotation of said cam and the block with the spindle, while also maintaining them in alignment during relative sliding adjustments thereof. An important. advantage. is that an exceedingly simple complementalv cam arrangement is provided, by which the extent. of cit-center movement of the toolecarrier-block may be readily effected.

Having thus explained. the nature of the inven-. tion and described an operative manner" of constructing and using the same, although without attempting, to set. forth all: of. the forms in which it may be made, or all of the forms of its use; what is claimed is:

1. In a beading and flaring, machine of. the character described, a spindle member;- having. an axial bore, means for. rotativel'y' supporting the same, cam means axially slidable in said'borezand rotatable with the spindle member; a tool-carrier block axially disposed within said cam: means and rotatable therewith, said tool carrier block being axially slidable and capable of ofi-center: move-- ments within said cam means", means for imparting limited axial sliding movements to said cam means with respect to said tool-carrier block, and means operated. by said relative sliding movements for moving the tool-carrier block to and from an ofii-center position.

2. In a beading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting the same, cam means axially slidable within said;

bore and rotatable with the spindle member, a tool-carrier block axially disposed within said cam means and rotatable therewith, said tool carrier block being axially sli'dable and. capable of oiT-center movements within said cam means, means for imparting sliding movements to the cam means and tool-carrier block together, means for interrupting said movement of the tool-carrier block during continued movement of the cam means, and means operated by the relative sliding movement of the cam means and carrier block for moving the latter to and from an olfcenter position,

3. In a beading. and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting the same, cam blocks slidingly mounted within said bore and rotatable with the spindle member, a tool-carrier block axially disposed between said cam blocks and rotatable therewith, said tool carrier block being axially slidabl'e' and capable of ofi-center movements between said cam blocks means for imparting limited sliding movements of the cam blocks with respect to said tool-carrier block, and means operated by said relative sliding movements for moving the tool-carrier block to and from an oil-center position.

4. In a. beading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively. supporting the same, cam blocks slidingly mounted within said bore and rotatable with the-spindle member, a

offecenter position during said relative movement of'thecam blocks.

5. Int. beading. and flaring machine of the character described, a spindlememb'er'having' an axial bore, means'for 'rotatively supporting the same, cam; means axially slidable in said bore and rotatable; with the spindle member, aptoole carrier block. axially disposed within said cam means. and rotatable therewith, said tool carrier bIock' being axially slidable and: capable of' off-- centenmcvement within said cam means, means for: imparting: sliding. movements to said cam meanswith respect: to said tool-carrier block, means operated. by; said relative sliding movements for moving the tool-carrier bloclr to and from an off-center. position, and means operable by movementof said came means for limiting the extent of said off-center, movement.

6. In a beading: and flaring machine, of the character describeda; spindle member having an axial bore, means for rotatively supporting said spindle, cam blocks slidinglymo-unted within said bore and rotatable with the spindle member, a tool-carrier block axially: disposed between said cam blocks; and rotatable therewith, said toolcarrier block: being axially slidable and capable of oil-center movements between said: cam blocks means for imparting sliding movement of the cam blocks with-respect to said tool-carrier block, said cam blocks and said tool-carrier block hav ing interengaged complemental cam surfaces for moving the tool-carrier block to and from an offcenter position during". said relative movement of the cam. blocks, and means operated by sliding movement of said cam blocks. for limiting the extent of saidofi-centermovement.

7. In a" beading and flaring machine of the character described, a spindle member having an axial bore of angular cross section, means for rotatively supporting: said spindle, cam members sliding-1y mounted in said: bore and having a cross section complemental'to the cross section of said bore;.a tool-carrier block axially disposed between said cam members. and rotatable therewith, said tool carrier member having a cross section complemental to the. cross section of the cam members and being axially slidable and capable of off-center movements between said cam members, means for imparting sliding movement to the; cam members relative to said tool-carrier block, and means operated by said relative sliding movements for moving the tool-carrier block to and from an off-centerpos'itl'on.

8. In a beading and flaring machine of the character described, a spindle member having an axial bore of angular cross section, means for rotatively supporting said spindle, cam members slidingly mounted in said bore and having a cross section complemental to the cross section thereof, a tool-carrier block axially disposed between. said cam members and rotatable therewith, said tool carrier block having a cross section complemental to the cross section of the cam members and being axially slidable and capable of oil-center movements between said cam members,.means for imparting sliding movement to the cam members with respect to the toolcarrier block, means operated by relative sliding movements for moving: the tool-carrier block to and from an oft-center position, and an adjustable'stop: movable with said cam members for limiting the extent of said off-center movement.

9. In a beading and flaring machine of the character described, a spindle member having an axial bore of rectangular cross section, means for rdtativel'y supporting said spindle, axially slidable cam blocks located within said bore and having a cross section complementalto the lat-- ter, a tool carrier block axially disposed between and rotatable with said camblocks, said toolcarrier member having a cross section complemental to the cross section of the cam blocks and being axially slidable and capable of oil"- center movements between said cam blocks, means for imparting sliding axial movements to said cam blocks and also to said tool-carrier block, and means for interrupting the sliding movement of said tool-carrier block during continued movement of the cam blocks, said cam blocks and said tool-carrier block having complemental cam surfacesfor movingsaid toolcarrier block to and from oil-center positions during said relative movement.

10. In a beading and flaring machine of the character described, a spindle member having an axial bore of rectangular cross section, means for rotatively supporting said spindle member, cam members slidingly mounted Within said bore and also of angular cross section, a tool-carrier block axially disposed between the cam members and rotatable therewith, said tool carrier block being of angular cross section and axially slidable and capable of oil-center movements between said cam members, means for imparting simultaneous sliding movements to the cam members and the tool-carrier block, and means for interrupting movement of the tool-carrier block during continued movement of the cam members, said toolcarrier block and said cam members having in-' terengaging surfaces so positioned as to move the tool-carrier block off-center during 'relative movement of the cam members with respect to the tool-carrier block.

11. In a heading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting said spindle member, an axially slidable tool-carrier block slidingly located within said bore, axially slidable cam members also located within the bore and slidable with respect to said tool-carrier block, said cam members and saidtool-carrier block having complemental cam surfaces for imparting oil-centenmovem'ent to the tool-carrier block during the relative sliding movement of the cam members, means for imparting axial sliding movements to said cam members, means for temporarily connecting the cam members and the tool-carrier block so that they" will travel together during such movement of the cam members, and means for arresting said travel of the tool-carrier block after a predetermined distance of such travel, said tool-carrier block being then free for oiI-center movement.

12, In a beading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting said spindle member, an axially slidable toolcarrier block located within said bore and having a longitudinal slot therein provided with an offset portion at one end, axially slidable cam members located within said bore and slidable with respect to the tool-carrier block, said cam members and said tool-carrier block having com plemental cam surfaces for imparting off-center movement to the tool-carrier block during sliding movement of the cam members with respect thereto, and a pin carried by said spindle member and extended through said slot, so as to arrest sliding movement of the tool-carrier block after a limited distance of such travel, said toolcarrier block being free for oil-center movement while said pin is in register with the ofi'set portion of said slot.

13. In a beading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting said spindle member, an axially slidable tool-barrier block located within said bore and having a longitudinal slot therein provided with an oifset portion at one end, axially slidable cam members located within said bore and slidable with respect to the tool-carrier block, said cam members and said tool-carrier block having complemental cam surfaces for imparting off-center movement to the tool-carrier block during sliding movement of the cam members with respect thereto, a pin carried by said spindle member and extended through said slot, so as to arrest sliding movement of the tool-carrier block after a limited distance of such travel, said toolcarrier block being free for ofi-center movement while said pin is in register with the offset portion of said slot, and means for limiting extent of said off-center movement.

14. In a beading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting said spindle member, an axially slidable tool-carrier block located within said bore and having a longitudinal slot therein provided with an offset portion at one end, axially slidable cam members located within said bore and slidable with respect to the tool-carrier block, said cam members and said tool-carrier block having complemental cam surfaces for imparting oil-center movement to the tool-carrier block during sliding movement of the cam members with respect thereto, a pin carried by said spindle member and-extended through said slot, so as to arrest sliding movement oi. the tool-carrier block after a limited distance of such travel, said tool-carrier block being free for oilcenter movement while said pin is in register with the ofiset portion of said slot, and an adjustable stop member movable with the cam members for limiting the extent of said off-center movement.

15. In a beading and flaring machine of the character described, a spindle member having an axial bore, means for rotatively supporting said spindle member, an axially slidable tool-carrier block located within said bore and having a longitudinal slot therein provided with an offset portion at one end, an operating block slidingly mounted within said bore, cam blocks connected with said operating block, said cam blocks and operating block being relatively slidable with respect to said tool-carrier block, said cam blocks and said tool-carrier block having complemental cam surfaces for imparting off-center movement to the tool-carrier block during said relative sliding movement, a pin carried by said spindle member and extended through said slot, so as to arrest sliding movement of the tool-carrier block after a limited distance of such travel, said tool-carrier block being free for oiT-center movement while said pin is in register with the offset portion of said slot, and a stop member adjustably mounted within said operating block and positioned to engage the inner end of the tool-carrier block, so as to limit the extent of said cit-center movement.

16. In a, beading and flaring machine of the character described, a spindle member having an axial bore, said spindle having longitudinal slots therein each provided with an offset at one end,

an axially slidable tool-carrier block located with in said bore, axially slidable cam-members also located within said bore and slidable with respect to the tool-carrier block, said cam members and said tool-carrier block having complemental camsurfaces for imparting oil-center movements to the tool-carrier block during sliding movement of the cam members with respect thereto, and a pin mounted in the tool-carrier block and extended through said recesses, so as to arrest sliding movement of the tool-carrier block after a limited distance of such travel, said tool-carrier block being free for ofi-center movement while said pin is in register with the ofiset portion of said slot.

17. In a beading and flaring machine of the character described, a, spindle member formed of complemental sections and having an axial bore, one of said sections having oppositely disposed openings therein, blocks secured within said openlugs to form longitudinal slots each provided with an oflset at one end, an axially slidable tool-carrier block located within said bore, axially slidable cam-members also located within sai bore and slidable with respect to the tool-carrier block, said cam members and said tool-carrier block having complemental cam-surfaces for imparting oif-center movements to the tool-carrier block during sliding movement of the cam members with respect thereto, and a pin mounted in the tool-carrier block and extended through said recesses, so as to arrest sliding movement of the tool-carrier block after a limited distance of such travel, said tool-carrier block being free for oil"- center movement while said pin is in register with the offset portion of said slot.

18. In a beading and flaring machine of the character described, a spindle member formed of two complemental sections of semicircular crosssection, the lower member being provided with oppositely disposed recesses, blocks removably secured within said recesses, and cooperating with the latter to provide longitudinal slots each having an offset at one end, means for securing said sections together, so as to provide a, longitudinal bore, an axially slidable tool-carrier block located within said bore, axially slidable cam-members also located within said bore and slidable with respect to the tool-carrier block, said cam members and said tool-carrier block having complemental cam-surfaces for imparting off-center movements to the tool-carrier block during sliding movement of the cam members with respect thereto, and a pin mounted in the tool-carrier block and extended through said recesses, so as to arrest sliding movement of the tool-carrier block after a limited distance of such travel, said toolcarrier block being free for ofi-center movement while said pin is in register with the ofiset portion of said slot.

HENRY E. HULL.

EMMETT C. HARTLEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 301,130 Kollberg July 1, 1884 319,559 Cashin June 9, 1885 872,346 Harter Dec. 3, 1907 1,051,086 Clark Jan. 21, 1913 1,610,195 Belles Dec. 7, 1926 1,657,311 Malone Jan. 24, 1928 1,888,260 Clark Nov. 22, 1932 1,895,281 Currie Jan. 24, 1933 2,043,442 McNeil June 9, 1936 2,105,747 Martin et al Jan. 18, 1938 2,108,151 Teetor Feb. 15, 1938 2,280,078 Pettey Apr. 21, 1942 2,285,295 Martindell June 2, 1942 FOREIGN PATENTS Number Country Date 851,759 France Oct. 9, 1939