US1622401A

US1622401A - Metal-working machine

Info

Publication number: US1622401A
Application number: US599042A
Authority: US
Inventors: Sifkovitz George
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-11-04
Filing date: 1922-11-04
Publication date: 1927-03-29
Anticipated expiration: 1944-03-29

Description

G. SIFKQVITZ METAL WORKING MACHINE March 29, 1927. l 19622,@01

Original Filed Nov.4. 1922 3 Sheets-Sheet l /N VEN TR 560719645 f/0 m72 G. SFKOVlTZ METAL WORKING MACHINE March 29, 1927. 1,622,401

Original Filed Nov. 4. 1922 5 Sheets-Sheet 2 l 622 401 Nah 29, 1927. G. .SIFKOVITZ 9 y A METAL AWORKING MACHI NE Original Filed Nov. 4, 1922 3 Sheets-Sheet :3

Patented Mar. 29, 1927.

PATENT OFFICE.

GEORGE SFKOVITZ, F DETROT, MICHIGAN.

METAL-WGRKING MACHINE. p

Application filed November 4, 1922, Serial No. 599,942. Renewed October 16, 1926.

My invention relates to a combined pressing, punching, sawing and drilling machine.

The objects of my invention are:

1st: To provide a simple and efi'icient machine in one combined. unit for performing the various operations above indicated for any desired purpose.

2nd: More specilically to provide a machine for punching, sawing apart and drilling holes in a rigid automobile wheel rim to convert theV same into a collapsible wheel rim of the type shown kand described on patent application which was filed on the 16th day of October, 1920, and bears' Serial No. 417,339, which is pending` for broader claims, and Canadian Patent No. 222,974 issued to me.

In the accompanying drawings, Fig. 1, is a side elevation partly in section of the complete machine. Fig. 2 is a rear elevation of the same. Fig. 3 is a plan view of the same. Fig. 4 is a sectional elevation showing the rstripper for the female die. Fig. 5 is a side elevation of the drill; Fig. 6 is afront elevation of the drill; and Fig. 7 is a horizontal cross section through the press ram` on line 7-7 of Fig. 1.

The whole mechanism is mounted on a pedestal or base 1.

l The press or punch unit comprises a frame 2, provided With a finished face 3 upon which are set and secured the male die 4 and its associated parts. The die 4 is secured to a die holder 5 Which rests on the surface 3 and is held in place by the bolts 6.

The die holder 5 is provided with a depending T shaped support 7 having a vertical leg 8 and a horizontal leg 9. The support 7 may be formed integral with the die holder 5 or made as a separate piece and secured in any desired manner.

Four strippers 10 are provided comprising four vertical rods 11 each having an integral collar 12, adjacent to the under face 13 of the die holder 5. The rods 11`pass loosely through holes drilled in the die holder 5 and also in the horizontal leg 9 which two members act as guides for the rods 11.

Each rod 11 is provided with a nut 14 at its lowerl end and a set collar 15 at its upper end. A helical spring 16 is placed around each rod 11, its upper end abutting against the collar 12 and its lower end similarly in contact with the horizontal leg 9.

An opening 17 is formed in the frame 2 to provide space for the stripper parts.

The upper, or female die 13, is ysecured to the press ram 19 which is slidably mounted in vertical guides 20 formed in frame 2.

'.lhe ram 19 is actuated by a screw 21 the lower end of which is a tight fit in a socket formed in the upper end ofram 19.

A worm gear 23 provided with a long hub 24 is journaled in a cap 25, the'latter being secured to the upper portion of frame 2 by four bolts 26.

'the interior of gear 23 and hub 24 is provided with a strong screw thread engaging the screw 21 to operate the ram 19.

A.' pair of threaded collars 27 engage ex-y ternal threads on the lower end of hub 24 and between the upper collar 27 andthe cap a ball thrust bearing 28 is interposed. By this construction a rotary movement of the worm gear 23 imparts vertical motion to the ram 19.

'1`he cap 25 is provided with a pair of bearings 23 in which is journaled the wormV The above described parts are used to imv part a fast motion to ram 19 to bring the die 18 down against the work.

`When this is done the actual punching or` These pins are spaced apart as illustrated` so that as the handle 38 pivots about its connection 38L with the handle part 38b in a counter clockwise direction, the band is drawn tightly about the drum and contin- -ued swinging movement of the handle in the same direction producesrotation of the drum. The swinging of the handle in the reverse direction releases the band.

For the sawing operation I have provided a metal band saw the same being mounted. on an upper pulley 51 and a lower pulley 52.

The pulley 52 is mounted on a pin secured to a bracket 54 which is bolted or otherwise rigidly secured to pedestal 1.

The pulley V51 is mounted on a vertically adjustable pin 55 the same being clamped between upper and lower set screws 56 in a bracket 57 which latter is rigidly secured to trame 2.

At the rear of frame 2 th-ere is mounted a vertically adjustable bracketr which carries a guide roller 50` for the saw 50.

Also at the rear of traine there is formed a pair of bosses or lugs 60 in each of which is secured a guide bar 61 i'or supporting the saw table 62. The table 62 is provided with four lugs 63 at its lower side, the same being bored for a sliding lit on guide bars 61.

To drive the saw 50 I provide a hand crank 64 secured to a shaft 65, the same being mounted in a bearing 66 secured to the frame 2 and a bearing 67 secured to pedestal 1.

The shaft carries a sprocket 68 which drives a chain 69 which in turn drives a sprocket 70 secured to the lower hand wheel or pulley 52.

A .small fly wheel 71 may be bolted to pulley 52 as shown in Fig. 2.

The shaft 65 carries a sprocket 72 which drives a chain 73 passing around a sprocket 7 4 loosely mounted on a pin 75 the latter being lined to frame 2. Y

A small Vgear 7 6 is also loosely mounted on pin 75 and is fastened to the sprocket 74.

The gear 7 6 drives a gear 77 mounted on the table feed screw 73 which is journa-` at one end in a bearing 7 9 termed in frame 2 and at the other end in a bearing 80 depending rom saw table 62.

A small hand wheel 31 is mounted on the upper end ot a vertical screw 82 which operates through a hole tapped in saw table. The screw 32 carries at its lower end a halt nut 63 which engages the feed Iscrew 73.

A flange 84 on table 62 is provided Ytor squaring the work and this flange has a slot 85 to clear the saw.

The work may be clamped on saw table 62 in any desired manner; then by the operation of the hand crank 64 and the connected gearing just described the saw is driven and the work fed to it to make the cut.

Referring again to the pressing action, on account ot the female die being on top with `no outlet, for the punchings, the saine may be satisfactorily ejected by the following mechanism:

A hole 100 is drilled through the die 18 and a pin 101 is loosely itted to move vertically in this hole.

The pin 101 is provided with a keyway or slot 102 with closed ends and a set Iscrew 103 tapped through ram 19 has its point engaging the slot 102 in such a manner that the pin 101 has a free but limited vertical motion.

A guide bracket 104 is bolted to ram 19 and tornis a guide for the ejector bar 105.

A lever 106 is pivoted by a pin 107 to the bracket 104 at one end and has its other end resting on the upper end ot the ejector pin 101. j

On the down or punching strokeV of ram 19 the separated material is forced up into the female die 18 and sticks there. On the up or idle stroke o1 ram 19 the ejector bar 105 is carried up with the ram until its upper end strikes the projecting under surlace olf cap 25. l

The further upward motion o ram 19 produces pressure of the ejector pin 101 on the punching and ejects it. V

For drilling l provide a drill press constructed and mounted as follows:

A lower bracket 125 is provided with a hole 126 which tits the guide bar 61.

An upper bracketv 127 has a flange 128 which is bolted to the upper portion of frame 2.

The

brackets

125 and 127 are connected by a standard 150 which carries the table 129.

A spindle 130 is mounted in

bearings

131 and 132 and driven through

bevel gears

133 and 134, by a hand crank 135, all otusual construction. j

The spindle 130 may be fed vertically by a hand lever 136. i

The table 129 is pivoted vertically by a pin 137 mounted in a swivel bracket 138 which is connected to a clamp bracket 139 which latter is clamped to the standard 150.

The swivel bracket 138' is connected to the clamp bracket 139 by bolts 140 extending through slotted holes 141 in such a manner that the table 129 may be tilted.

While I have shown all the motions in the above described machine as beingoperated by hand it will be obvious that power may be easily applied to any or all of them if desired; and, further, while the machine as shown is designed `and intended 'for light work it may obviously be made as heavy as desired. l

I therefore desire to claim and hold as mine all the patentable subject matter cov-V ered by the following claims:

1. In a machine of the class described, `a support for a piece of work, a stationary' die, a movable rain, guidesv for the rain, a die carried by therain, a screw to raise and lower the ram, a driven shaft coupled with the screw to rotate the same, a drivin-g shaft coupled with the driven shaft to `rotate the driven shaft, a drum mounted on the driven shaft, a pivotally mounted lever having a frictional band encircling the drum to be tightened thereabout to rotate the same as the lever is actuated.

2. In a machine of the class described, a support for a piece of work, a stationary die, a movable ram, guides for the ram, a die carried by the ram, a screw to ralse and lower the ram, a worm gear having a threaded hub engagmg the screw, a bearing for the hub of said gear, a worm shaft to drive the gear, an ejector mounted within the ram extending through the die carried thereby, a lever pivoted to the ram guides having its free end engaging the ejector to be raised by the movement thereof, a plunger carried by the ram to be lifted therewith, said plunger engaging the bearing for the hub to limit its upward movement and engaging the lever to limit its upward movement to hold the ejector downwardly as the ram travels upwardly.

3. In a machine of the class described, a stationary die, a ram, a die carried by the ram, driving means coupled with the ram to rapidly raise and lower the same, auxiliary driving means coupled with the Vram to actuate the same downwardly, comprising a driven shaft coupled with the ram having a drum mounted thereon, and a pivotally supported lever having a friction band engaged about the drum to be tightened thereabout to rotate the same upon actuation of the lever.

In testimony whereof I he-reunto affix my si gnature.

GEORGE SIFKOVITZ.