US1930259A - Machine to pierce and countersink forty holes in alpha wheel rim - Google Patents

Description

Oct. 10, 1933. H. TORMYN ET AL 1,930,259

MACHINE To PIERCE AND COUNTERSINK FORT! HOLES IN A WHEEL RII Filed July 29, 1932 4 Sheets-Sheet 1 1933- H. TDRMYN ET AL 59 MACHINE T0 PIERCE AND COUNTERSINK FORTY HOLES IN A WHEEL RIM Filed July 29, 1932 4 Sheets-Sheet 2 a n4) W going 22 &

s mw zzz Oct. 10, 1933. TQRMYN 5 AL 1,930,259

MACHINE TO PIERCE AND COUNTERSINK FORTY HOLES IN A WHEEL RIM Filed July 29, 1932 4 Sheets-Sheet 3 arm 02mm Oct. 10, 1933. H. TORMYN ET AL 1,930,259

MACHINE '10 PIERCE AND COUNTERSINK FORTY HOLES IN A WHEEL RIM Filed July 29, 1932 4 Sheets-Sheet 4 Patented Oct. 10, 1933 UNITED STATES PATENT OFFICE MACHINE TO PIERCE AND. COUNTERSINK FORTY HOLES IN A WHEEL RIM Application July 29, 1932. Serial No. 625,997

13 Claims. (Cl. 16490) This invention relates to the manufacture of wire wheels and has particular reference to a die for the punching and countersinking of a plurality of holes in the rim. The machine or die of the invention is one of ten and in the sequence of operation follows the machine described and claimed in our copending application, Serial No. 625,996, filed July29, 1932.

The rim is round and has been previously shaped to the desired form before it is received into the die of the invention. The die of the invention comprises the lower die shoe and the top die or shoe. The lower die shoe has mounted thereon a plurality of punch holders and backing plates which are slidable and move in timed relation into engagement with the outside and inside of the rim, respectively. The punch holders have punches which punch openings into the rim and push the punched out piece of metal into passages formed. in the backing members.

The action of the punch holders and backing members is caused by the descent of the top die member on to the lower die member. The top member has a suitable cam which actuates the backing members while the slides are actuated by a lever pivoted to the die shoe and caused to move inwardly after the slide holder is positioned downwardly by the descent of the top die. When the top member is withdrawn the punches and backing members are automatically withdrawn, and suitable hooks on the top die member grasp the rim after it has been punched and raises it from the die shoe. On the drawings: Figure 1 shows a front view of a press with the die attached thereto.

Figure 2 is a side view of the structure of Figure 1.

Figure 3 is an enlarged sectional detailed view 0 through the die when the top member has descended on the lower member and the punches have operated to punch the holes in the rim.

Figure 4 is a sectional view similar to Figure 3 but with the upper shoe in itsuppermost position and showing the rim with the punched holes withdrawn from the die shoe.

Figure 5 is a view taken substantially on the line 5-5 of Figure 4.

Figure 6 is a perspective view of one of the backing members. a

Referring to the drawings, the numeral 2 indicates the machine or press of the invention as a whole. The press comprises the upright frame at the upper portion of which an electric motor 4 is mounted. The motor. has the driving pulley 6 which drives a belt 8 which in turn drives a flywheel 10 rigidly mounted on the axle 12 which extends acros the frame of the machine and at the opposite side has a gear wheel (not shown) mounted thereon which meshes with and drives the large gear 14 rigidly mounted on the shaft 16 having a crank 18 intermediate its ends. The crank 18 has attached thereto the connecting rod 20 which operates the crosshead 22 suitably attached to the top shoe 24 of the die. The lower 05 die shoe is indicated at 26 and a part thereof is resiliently mounted on a pneumatic cushion indicated as a whole at 28. The cushion 28 comprises the air cylinder 31 having a piston connected to a piston rod 30 attached to a plate 32. Suitable rods 33 connect the plate 32 with a plate 34. Suitable pressure pins 36 abut at their lower ends against the plate 34 and at the upper ends against the bottom of the slide holder (Figures 3 and 4). This structure gives a re- 75 silient or pneumatic mounting to the slide holder 80.

A handle 40 operating a linkage system 42 operates a suitable clutch (not shown) which causes the small gear on the end of the shaft 9 12 to be engaged with the shaft and to rotate the gear 14. After one operation of the punch a suitable throw-out mechanism will throw the clutch out of engagement with the gear. This mechanism is not shown but is conventional and 35 well known in the art. A suitable brake drum is shown at 44 having brake shoes 46 operated from a suitable linkage 48.

The parts so far described are conventional and are well known in the art of presses.

Referring to Figures 3 and 4 it will be seen that the die shoe comprises the flat lower base 50 having the ears 52 at opposite sides in which there is rigidly mounted the guide rod 54 slidable at its upper endin the bearing 56 mounted in openings 58 in the cars 60 on the top die member 24. At the outer portion of the base 50 there are mounted the mating upper and lower pivot-forming rings 62 and 64 rigidly secured to the base 50 by means of the machine bolts 66. The adjacent faces of the pivot rings 62 and 64 are shaped to circular form as at 68 to receive the pivot heads '70 of links 72, the purpose of which will be later described.

The base has the central annular recess as indicated at 74 the periphery of which coincides with the inner periphery 76 of the lower pivot ring 64. A projection '78 on a slide holder 80, slidable in the recess 74, cooperates with the projection 82 on the lower pivot ring 64 to limit the upward movement of the slide holder 80. The pins 36 constantly urge the slide holder to the position shown in Figure 4. The upper portion of the slide holder 80 is provided near its outer peripheries with forty radial grooves indicated by the dotted line 84 in Figure 3 and the corresponding full line in Figure 4. In each groove there is slidably mounted a punch holder 86 which has a recess 87 at its underside and in which there is received the shank of the link 72, the end of which is mounted on a pivot pin 89 substantially on the central line of the punch holder 86. The end of the link '72 is machined to bear on a corresponding machined surface on the holder 86 so that there will be no load on the pin when the holders 86 are being forced toward the rim. Each punch holder is shaped at its inner portion as at 88 to ccnform'to the shape of the rim and has a punch 90 mounted therein to punch the hole in the rim. Each punch 90 is provided with a head 91, a short distance from its end, the head 91 being for the purpose .of countersinking the openings formed by the punch. ,A suitable set screw 92 holds the punch in position. The punched holes are indicated at 94 and all of these holes are not in alignment or onthe same circle. For this reason the punches 90 in the punch holders will not all be positioned similarly to the punches. Some will be positioned a little higher than the punch shown in Figures 3 and 4 while others will be slightly lower, depending upon the spoke and its inclination. A suitable retaining ring 96 is positioned over the punch holders 86 and has grooves 98 conforming to the grooves 84 properly to guide the punch holders. The retaining ring 96 is secured in place by suitable machine screws 100 (Figure 5).

Adjacent the inner periphery of the slide holder 80 in grooves 104 there are slidably mounted the backing members 106 (shown in perspective in Figure 6) one backing member being provided for each pair of punch holders 86. Each backingmember has two passages 108 therethrough and in the end of each there is mounted a hardened bored wear member 110 to cooperate with the punch 90 to punch out the metal. This is bestshown in Figure 3. The wear member is held in place by means of a set screw 112.

Below each backing -member 106 the slide holder 80 is provided with a recess 114 in which a coil-spring 116 is received. The coil spring bears the one end against the outermost portion of the recess and at-itsiother end against a pin 118 secured in the bottom of the backing member 106. The spring 116 and pin 118'therefore constantly urge the backing member to the position shown in Figure 4 or away from the rim 120. A suitable top securing ring 122 is positioned over the backing members 106.

The rim fits in the slide holder 80 between the retaining rings 96 and 122 and between the punch holders 86 and backing members 106 and the slide holder is provided with an annular groove 126 immediately below the adjacent faces of the punch holders and backing members to accommodate the edge of the rim 120. In the groove 126 there is secured the positioning ring 128 permanently secured in place by the machine screws 130. The top of the positioning ring 128 receives the tire flange of the rim as shown in Figure 3 and at suitably spaced points the positioning ring has recesses 132. The purpose of these recesses 132 is to allow the piece of metal punched out in the formation of the openings 94 to fall to the bottom of the machine through the passages 134 in the positioning ring, 136 in the slide holder, and 138 in the base 50. If these spaces 132 were not provided and if for any reason any of the punched metal would fall on the positioning ring, they would be retained and would eventually clog up the machine.

The top shoe 24 includes the central spreading cam 140 having the cam surfaces 142 or one surface for each backing member 106. The spreading cam 140 is'secured to the top shoe by means of the ring 144 and the machine bolts 146, the cam and ring having cooperating shoulders as at 148. 7

An upper positioning ring 150 is movably mounted on the top die 24. The lower portion of the positioning ring has a shape 152 at its periphery to conform to the shape of the tire flange at the top of the rim 120. This is best shown in Figure 3. The positioning ring 150 is secured to the top die member 24 by means of the machine bolts 154 the heads and shanks of which pass through enlarged openings in the die while the threaded end is .screwthreaded in the top positioning ring. Secured to the upper side of the upper positioning ring 150 at diametrically oppo- 3100 site points are blocks 156. Each block is secured to the upper positioning ring by means of'machine bolts and has two openings 158- therethrough which correspond with recesses 160 in the underside of the top die member 24 and recesses 162 in the upper side of the upper positioning member. Coil springs 164 are received in the recesses and openings and constantly urge the upper positioning ring away from the top die shoe or to the position shown in Figure 4. Recesses 166 in the underside of the upper die24 allow the blocks 156 to project into the die shoe and do not interfere with the movement of the positioning ring 150.

At the .outer periphery of the upper position- J15 ing ring 150, preferably at diametrically opposite points, there are secured the brackets 168 each having a pair of ears 170 for the reception of a pivot pin 1'72 pivotally to mount the withdrawing hooks 174. The lower portion of the (I20 hooks 174 is shaped as shown at 176 to grasp under the flange of the rim as shown in Figure 4 to withdraw the rim from the die shoe 26 when the upper shoe is raised. The upper end 178 of the withdrawing hooks 174 is recessed as indicated at 180 while cooperating recesses in the .lock 156 serve to hold coil springs 182 which constantly urge the outer ends of the hooks to the right and the lower ends to the left in Figure 4'. The lower portion of I the end 176 of the hook is bevelled as at 184 in order that itmay easily ride over the edge of the rim when the top shoe is descending.

The retaining ring '96 and the slide holder 80 have mating recesses in which the hooks 174 may project when the top die descends on the lower die. These recesses are indicated by the dotted line 186 in Figure 3."

A contact or pressure ring 188 is secured to the underside ofthe top die 24 by means of the machine bolts 190. The purpose of this ring is to strike the upper surfaceof the ring 196 and push the slide holder downward against the pressure on the pins 36 when the top die descends. The ring 188 is grooved on its underside to prevent sticking.

Referring to Figure 5 it will be noted that the retaining ring 122 is secured to'the slide holder 80 by means .of the'machine screws 192. In order that the backing members 106 -(Figure 6) may 150 slide freely in their grooves 104 they are provided .With the ribs 194 and with recesses 196 at the two sides. The ribs 194 slide in suitable grooves and the recesses 196 of the adjacent side faces of the backing members 106 cooperate to form a slot 198 to clear the securing machine screws 192. The retaining ring 122 is also provided with a plurality of notches or recesses 200 at its outer periphery, the purpose of which is to afford easy access to the set screws 112. There are only half as many backing members 106 as there are punch slides 86 for the reason that one backing member has secured therein two hardened members 110 cooperating with two of the punches of the punch slides. By referring to Figure 6 it will be noted that the openings at the end of the passage 108 are in different planes to accommodate the different positions of the punches 90 in the punch slides 86.

Suitable grease plugs 202 are provided for the purpose of lubricating the moving parts.

The operation of the device is as follows: Assuming that the parts are in the position shown in Figure 4 and that the rim 120 is in the spaces between the punch holders 86 and backing members 106 and has its edge resting on the .lower positioning member 128, the operator will move the handle 40 to cause the press to operate. This will cause the top member 24 to descend, the hooks 1'74 riding over the edge of the rim 120 because of the beveled edge 184 and projecting into the recesses 186 so that the hook portions 176 engage the edge of the rim. The descent of the top die will cause: (1) the cam faces 142 to strike on the inclined edges 204 on the inwardmost end of the backing members 100 and cause them to move the position 'of Figure 4 to the position shown in Figure 3; (2) bring the positioning ring 150 on the rim and depress it against the tension of the springs 164; (3) bring in contact the upper contact or pressure ring 188 with the retaining ring 96; (4) the slide holder 80 to be moved downward (against the pressure on the pins 36) to cause the link 72 to swing on its pivot 68, 70 in the pivot rings 62 and 64 to force the punch holder 86 inwardly toward the rim or from the position of Figure 4 to the position of Figure 8; (5) the hooks 174 to ride over the rim edge and have the hook end 176 catch under the rim edge. The inward movement of the punch holders will force the punches 90 into the middle of the rim and punch out a slug from the rim to form the openings 94. When the top shoe 24 rises, the pressure pins 36 will force the slide holder upward which will cause the link 72 to pull the punch holders 86 from the position of Figure 3 to that of Figure 4. The ascent of the earn 140 will cause the cam surfaces 142 to leave the surfaces 204 on the backs of the backing members which will allow the coil springs 116 to push the pins 118 to the left (when considering the illustration in Figure 3) to slide the backing members 106 from the position of Figure 3 to that of Figure 4. The ascent of the die member 24 will also pull the rim therewith due to the engagement of the hooks 1'74 with the rim, as shown at the middle portion of Figure 4. The punched rim may now be removed by pulling it toward the front of the machine or pushing it toward the rear of the machine. After the removal of the punched rim and unpunched rim is placed in the machine and the operation recommenced.

We claim:

1. In a machine of the class described for punching holes in a wheelrim, a reciprocable top die, a'lower die shoe adapted to receive the rim and on which the upper shoe is reciprocable, a slide holder mounted in said die shoe, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said punch slides, meansactuated by the movement of the top die on the die shoe to cause the punch slides and backing elements to move toward the rim to cause the punches to punch spoke openings in. the rim around the entire periphery thereof. 2. In a machine of the class described for punching holes in a wheel rim, a lower die shoe adapted to receive the rim, atop die movable to- Ward and away from the die shoe, means on the die shoe to cause the punching of the plurality of holesin the rim when the top die is moved relative to'ihe die shoe, and means on the top die to withdraw 'the rim from the lower die shoe when the top die is raised.

3. In a machine for punching a plurality of holes in a wheel rim, a die shoe adapted to receive the rim, a top'shoe movable to and from the die shoe, a resiliently mounted slide holder slidable in said die shoe, a plurality of punch slides slidably mounted in said holder to move toward the rim, punches in said slides, means on the die shoe inside the rim to back the rim against the punches, and means actuated by the movement of said top shoe toward the die shoe to cause said punch slides to move toward the rim to punch spoke openings therein.

4. In a machine for punching a plurality of holes in a wheel rim, a die shoe adapted to receive the rim, a top shoe movable to and from the die shoe, a resiliently mounted slide holder slidable in said die shoe, a plurality of punch slides slidably mounted in said'holder to move toward the rim, a plurality of slidable backing members on the die shoe inside the rim to back the rim against the punches, and means actuated by the movement of said top shoe toward the die shoe to cause saidpunch slides and backing members to move toward the rim to punch spoke openings therein.

5. In a machine for punching a plurality of holes in a wheel rim, a die shoe adapted to receive the rim, a top shoe movable toward and away from the die shoe, a plurality of punch slides slidably mounted in the die shoe, punches in said slides, a plurality of backing members on the die shoe adapted to back the rim when the punches are acting, and means actuated by the movement of the top shoe toward the die shoe to cause the punch slides and backing means to contact the rim to punch spoke openings in the rim.

6. In a machine for punching a plurality of holes in a wheel rim, a die shoe adapted to receive the rim, a top shoe movable to and from said die shoe, a plurality of punch slides mounted in the die shoe for slidable movement to and from the rim, a plurality of backing members mounted in said die shoe and movable to and from the inner periphery of the rim, a cam on said top shoe to actuate said backing members to move them toward the rim, and means on said die shoe to move the punch slides inwardly, the movement of said punch slides and backing members taking place when the top shoe is moved on the die shoe.

'7. In a machine for punching a plurality of holes in a wheel rim, a pair of die members one of which is movable toward and away from the other, means actuated by the movement of said movable die simultaneously to punch a plurality of spoke openings in the rim, and means on the top die to withdraw the rim from the lower die shoe when the top die is raised. I

8. In a machine of the class described for punching holes in a wheel rim, a reciprocable top die, a lower die shoe relative to which the top die is reciprocable, a reciprocable slide holder on the die shoe adapted to receive the rim, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said slides, the reciprocation of said top die causing the reciprocation of said slide holder, means actuated by the movement of the top die to cause the backing elements to move toward the wheel rim, and means actuated by the movement of the slide holder to cause the punches to move toward the rim to punch the spoke openings.

9. In a machine of the class described for punch-' ing holes in a wheel rim, a reciprocable top die, a lower die shoe relative to which the top die is reciprocable, a reciprocable slide holder on the die shoe adapted to receive the rim, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said slides, the

reciprocation of said top die causing the reciproof the slide holder to cause the punches to move toward the rim to punch the spoke openings.

10. In a machine of the class described for punching holes in a wheel rim, a reciprocable top die, a lower dieshoe relative to which the top die is reciprocable, a reciprocable slide holder on the die shoe adapted to receive the rim, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said slides, the reciprocation of said top die causing the reciprocation of said slide holder, a cam on the top die actuated by the movement of the top die to cause the backing elements to move toward the wheel rim, and means actuated by the movement of the slide holder to cause the punches to 7 move toward the rim to punch the spoke openings.

11. In a. machine of the class described'for punching holes in a wheel rim, a reciprocable top die, a lower die shoe relative to which the top die is reciprocable, a reciprocable slide holder on the die shoe adapted to receive the rim, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said slides, the reciprocation of said top die causing the reciprocation of said slide holder, a cam on the top die actuated by the movement of the top die to cause the backing elements to move toward the wheel rim, and a plurality of pivoted arms actuated by the movement of the slide holder to cause the punches to move toward the rim to punch the spoke openings.

12. In a machine of the class described for punching holes in a wheel rim, a reciprocable top die, a lower die shoe relative to which the top die is reciprocable, a reciprocable slide holder on the die shoe adapted to receive the rim, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said slides, the reciprocation of said top die causing the reciprocation of said slide holder, means actuated by the movement of the top die to cause the backing elements to move toward the wheel rim, means actuated by the movement of the slide holder to cause the punches to move toward the rim to punch the spoke openings, and means on the top die to catch and remove the rim from the die shoe when the top die is raised.

13. In a. machine of the class described for punching holes in a wheel rim, a reciprocable top die, a lower die shoe relative to which the top die is reciprocable, a reciprocable slide holder on the die shoe adapted to receive the rim, a plurality of punch slides and a plurality of backing elements slidable in said holder, punches in said slides, the reciprocation of said top die causing the reciprocation of said slide holder, means on the top die to position and firmly to hold the rim when the top die is moved onto the lower die shoe, means actuated by the movement of the top die to cause the backing elements to move toward the wheel rim, and means actuated by the movement of the slide holder to cause the punches to move toward the rim to punch the spoke openings.

HERMAN TORMYN. FRANK F. WIETHOFF.

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