US1259359A - Punching-press. - Google Patents

Description

Patented Mar. 12, 1918.

3 SHEETS-SHEET l.

. M. F. CARR.

PUNCHING PRESS. APPLICATIN FILED Aue.4. 1911..

M. F. CARR.

PuNcH1-G PRess. APPLICATION FILED AUG4| |917- Patented Mar. 12, 1918.

3 SHEETS-SHEET 2.

W/T/VESSES l/VI/ENTUR www v Mmm' ATTORNEYS M. F. CARR.

PUNCHING PRESS. APPLICATION msn AuG.4.-l9u.

1 ,259,359. Patented Mar. 12, 191s.

3 SHEETS-SHEET 3.

O 0 O O O 0 O D 0 O O O Q. O O O O 0 O O O O /4 UUR/VE YS `standard punching can orifice.

'MICHAEL F. CARR, OF BROOKLYN, NEW YORK.

PUNCHING-PRESS.

Specification of Letters Patent.

rammed Mar. ia, raie.

Application filed August 4, 1917. Serial No. 184,429.

'ffl-0 whom t may concern.'

Be -it known that MICHAEL F. Cena, a tizen of the United States, and a resident- A ltliecity of New York, borough of Brooklowing is a full, clear, and exact description.

My invention relates to punching presses designed particularly for punching ship plates.

An object of the invention is to provide a simple, strong and efficient press whereby be done expeditiously.

Another object of the invention is to provide a punching press of the character mentioned in which any departure from the fully described, illustrated standard punching can be easily and quickly accomplished.

With the above and other objects in view, lthe nature of which will more fully appear as the description proceeds, the invention vconsists inthe novel construction, combination and arrangement of parts as herein and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views.

Figure 1 is ing press the work-carrying table of which is shown in section in line 1-1 of Fig. 2;

Fig. 2 is a side elevation of the press, the work-carrying table beingshown in section on line .Q -2, Fig. 1; A

Fig. 3 is a fragmentary section through the press on line -3-3 showing the feed mechanism for the work-carrying table;

Fig. f1 is a fragmentary top view of the work-carrying table, a portion of the work thereonv beingbroken away to show the details of construction of the table;

- Fig. 5 is a longitudinal section through Fig. 4;

through the work-carrying table on line 7-7, Fig. 1,

Fig. 8 is a detail structure of the means a front elevation of a punch-` rying table;

Fig. 9 is a modified structure of a feed mechanism for the work table; and

Fig. 10 is a side elevation of the auxiliary rack section whereby the feed of the workcarrying table is varied so as to varyv the distance between the punched holes in the ship plate. i

Referring to the drawings, the work-carrying table consists of a rectangular frame 11 made of suitable structural iron beams running longitudinally and transversely. The frame 11 is supported on suitable axles 12 which are provided with wheels 13 rolling on a track 14, which track'is disposed in front of a punching-press frame 15. The frame 11 is provided with a rack 16 running longitudinally of the frame in proximity lto the press. Gears 17 and 18 are in mesh with said rack 16, said gears being mounted on shafts 19 and Q0 respectively with which they are constrained to revolve, the shafts bearing on the frame 15 of the press. The fram' 15 also presents a bearing Q1 for the rack to slide in when the workcarrying table is moving on its track 14:.

The shaft 19 is provided with a ratchet 2Q constrained to revolve with the shaft. i pawl 23 engages the ratchet Q2. A spring 21 'maintains the engagement of the pawl with the ratchet. The end of the pawl is adj ustably mounted in a slot '25 of an arm 26, whereby the displacement of the pawl, and in consequence, of the ratchet, may be varied. The arm 26 is constrained to oscillate with an arm Q7 which has also a slot 28 for adjusting therein one end of a drag rod Q9, the other end of the rod forming a hook to be engagedby a pin 30 provided on a plate 31 which is constrained to revolve with the main shaft 32 of the press.

During the rotation of the plate 31 the pin 30 comes into engagement with the drag rod 29 and causes the rotation of the gear 17, thereby imparting a longitudinal movement to the work-carrying table'. The pawl Q3 is connected by a rod 33 to a spring 34, or a dashpot if so desired, which would move the pawl and to their initial position,

therewith the drag rod the spring 24: al

-lowing tne displacement of the pawl on the ratchet. A support 29is provided for the for engagement.

Since the rack 16 is .constant -and the distance between the holes to be punched on the press varies, a one-way rack 35 is detachably secured to the rack 16, or to the work-carrying table if sov desired. The teeth of the rack 35 vary in accordance with the desired distance between the holes to be punched. A pawl 36 is pivotally mounted on the frame of the press and engages the rack 35 under the action of gravity. Although the displacement of the table bythe gear 17 may be adjusted so as to move the table through a tooth of the rack 35, the tendency of the table to roll ahead may come into play and, therefore, the gear 18 is used to roll the table back so as to bring a tooth of the rack 35 against the pawl 36 at the moment when the presser head moves to engagegthe work on the table.

This is obtained by a ratchet wheel v37 constrained to revolve with the shaft 20. A pawl 38 engaging the lratchet 37 is spaced from a slide rod 39 vof a spring 40 which joins the pawl to the rod. The engagement of the pawl 38 with the ratchet is obtained by aspring 41. The slide rod 39 has a shoulder 42 which extends into the tooth of the pin 30. The rod 'carries-a spring 43, one

. end of which abuts against the shoulder and the other against a spring 44 provided for the rod on the frame ofthe press. This spring brings the vshoulder 42 of the rod t`o its initial position after it has been displaced by the pin 30. x It will be noted that thel springs 40 and 43 allow the pawl 38 to table I provide athreaded oscillating rod 46, which is prevented from longitudinaldisplacement in the table by suitable collars 47 provided on said rod. The threaded porltion'of the rod carries anut 48 which has a flat surface and which is adapted to be engaged by the work. This nut 48has a bore,

opening into the flat portion, into which a pin 49 maybe dropped through an aperture in the work and whereby the lwork is secured to the nut 48. The flat surface ofthe nut is preferably on a level with the upper surface of the table. The rod 46 is provlded with a crank 46 for manipulating the same.

To shift the work' on the 'table laterally and angularly, I provide a. pai;l of Vscrws 50 and 5l mounted in the framev 11 of the table and ldisposed transversely of same.- Each of the screws carries a nut 52 each pivotally mounted in a plate 53 disposed below the workin the table. Each of the screws carries aworm wheel "54 each engaged by a able collars 57. A' crank 58 is provided at the end of the shaft for rotating the same,

. therefore, the nut 52 engaged thereby move', transversely ofthe table, and. that end ofthe plate to which it is connected displaced' whereby the screw 50 may be revolved, and,

therewith. j

The other worm is revoluble with a, shaft 59 which passes through the tubular shaft 56, and is also provided with a crank 60 of .a smaller throw than the crank 58 to prejump the tooth of the ratchet 37 when the gear 18 rotates under the displacementv ofthe 'table by the gear 17. The shoulder '42 and the drag rod 29 are so related that the pin 30 engages the shoulder as it leaves thev drag rod 29.

As the pin and 'presser head move'downwardly the spring 40'is compressed. The

'further downward displacement of the pin and, therefore,-of the shoulder 42, causes the rotation ofthe ratchet and, therefore, 'the rotation of the wheel 13: which moves the table backward until' the tooth vof therack 35 andthe pawl v36 are fully engaged. The

. further displacement of the pin will only cause the compression of the springs 40 and 43. The pin-'30 leaves theshoulder 42 as the die, or dies, begins to engage the work 45 projecting from the table into the frame of the press. The moving of Athe table so as to bring the rack 35 and the pawl 36 into vent interference, and by which the screw 5l may be operated and, therefore, the other end of the plate 53 moved. The plate 53 hasa series of elongated slots 61 into which a pin 62 lmay be dropped through an aperture in the work 45.; These pins 62 entrain work 45 with the plate 53 during the dis'- placement of same by the screws 50 and 51. The work is locked to the frame 11 of the tabl? ed n lugs 64 provided on the frame, said 'lugs also carrying an eccentric member. 65

operative engagement is not resisted by the 'ratchet 22 and the pawl 23, for the said ratchet is so 'arranged that the spring 24 will allow it to yield when the gear 17 is rotated in the reverse direction.

whereby the jaws 63 may be jammed against the work on the table. j

When the running of the holes in the work by jaws 63 which are pivotallymountrequires a change, as, for example, wlany butts are joints of plates, and altering of frame spacing such as bulkheads and tur ing frames, it is necessary to change-t e rack. This would require the stopping of the vpress and a change in the feed. To obviate this I provide rack sections 66 which are applicable directly to the rack 35 and for which sections pins 67 are provided on the rack 35, suitable lapertures being prof vided in therack--sections 66 to engage the pin 67. The aperturesin thevrack sections' assenso ing press or the adjustment of the work von retracting mechanism, is

the table. l

In Fig. i 9 a modified foren of the feed mechanism is shown. In the said hgure the drag rod 68 is connected directly to one end of a rst-class lever 69, the` other end of which is slotted to engage a pawl 70. rlhe spring 71 .for restoring the pawl to the initial position is mounted directly on the drag rod 68. The operation of the drag rod, as well as the by across bar 72 which is connected to theprojecting end of a presser head 7 3 of the press.

l. In a punching press, a work-'carrying table comprising a-frame, means for feeding i the frame operable by the movement of the press, a' platejdisposedlongitudinally the frame of the table and to which the work is adapted to be detachably secured, means for moving each end of the plate relative to the frame, and means for moving the work on the table and on the plate.

2. In a punching press, a work-carrying table, means for feeding the table operable by the movement of the oluble in the table, a nut movable on the screw and adapted to be secured to the work on the table whereby the work on the table may be displaced'by the manipulation of said screw, a plate in the table and adapted to be secured to the work on the table, and' means for moving said plate transversely of the movement of the nut on the screw.

3. lnaspilnching press, a table, means for feeding the 'table operable by the movement of the press, means in the table for adjusting the work longitudinally of the table, a plate disposed longitudinally of the table and adapted to be secured to the work on the table, and means for moving each end of 'the plate transversely of the table for adjusting the work thereon.

4. In a punching press, a table, means for feeding the tableby the movement of the press, a screw disposed longitudinally of the table and prevented from axial displacement relative to said table, a nut engaged by said screw and adapted to be secured to the work on the table and whereby the work may be adjusted longitudinally of the table by means of said screw, a plate in said-table disposed longitudinally ofsame, a nut 1n press, a screw revproximity of each end of the table, a screw for/each of the nuts disposed transversely of the table, and means for imparting rotary motion to each of the screws.

` ln a punching press, a table, a ratchet mechanism for advancingthe table and a ratchet mechanism for retracting part of the advancing of the table, said second ratchet mechanism becoming operable after the first ratchet mechanism has been operated and before the press punches the work.

6. In a punching press, a table, rack, a gear meshing with the rack, a ratchet mechanism for revolving the gear operable by the movement of the press, a second gear in mesh with the rack, and a second ratchet mechanism for operating the second gear also operable by the press but after the first mechanism has been operated and before the press punches the work, said second ratchet mechanism being adapted to retract the table and having means permitting the forward movement of the table by the firstk ratchet mechanism.

'7. In a punching press, a table, means for feeding the table forward= means including.

for retract-ing. a part of the forward a spring` and a pawl feed, 'a rack carried by the table,

on the ypress for engaging the rack and whereby the retracting movement of the table is controlled.

8. in a punching press, a table, a rack carried by the table, a pawl on the press engaging the rack, means operable by the press for feeding the table so that the movement of the rack displaces the pawl, and means including a spring adapted to move the tablein an opposite direction to bring a tooth of the rack against the pawl.

9. In a punching press, a table, a rack carried by the table, a pawl on the press for engaging the raclr, a pawl and ratchetmechanism for feeding the table forward, a pawl and ratchet mechanism for retracting the forward movement of the table so as to: bring a tooth of the rack against the pawl, and a compression spring connecting the last-mentioned ratchet mechanism to the operating means of the press.v

l0. in a vpunching press, a table, a rack carried by the table, -a pawl carried bythe press for engaging the rack, a pawl and ratchet mechanism for feeding the table forward, a presserhead, means connecting the presser head to the pawl and ratchet mechanism, y'second ratchet mechanism for reon the. table, a pavvl on the press for 'eltigaging the rack, and rack sections securable to therack so that the teeth of saidy rack sections are above the teeth of the rack, whereby the paivl will engage the teeth of the rack sections in lieu of the teeth of the rack when said rack sections engage with the pawl and whereby the change of table feed is obtained.

,12. In a punching press, a table, means for feeding the table, means in the table for adjusting the work longitudinallyv of the table, a plate disposed longitudinally of the table and having means whereby it may be secured to the Work on the table, said means permitting) a displacement of the plate relative to the work. and means for` moving the platetransversely of the table.

13. In--a punching press, a table, means for feeding the tahle .'a screw revoluble in the table, a nut engaging the screw and hav-` ing rneans whereby it may he secured 'to worlrr on the table, said screw serving 'for the adjustment of the Work longitudinally f of the table, a plate disposed .longitudinally ofthe table and having elongated slots running longitudinally Where-by the plate may be connected to the Work on the table, a pair of screws ruiming transversely of the plate, a nut for each screw pvotally mounted in Weense theplate, ends of the plate, a Worm Wheel for each of ,the screws, a tubular shaft having a Worm a table, a rack pins projecting latera lrack section having apertures for engaging said pins so that the teeth of the rack section are disposed above the teeth of the rack, and a pavvl on the press for gravitationally engaging the rack or the rack section substantially as and for the purpose set forth. f

, 15.111 a punching press, a table, a rack carried by the table, a pawl for engaging said 'nut being in proi'ximity to the the rack, and a lrack section adapted to be i secured to the rack so as to present its teeth above the teeth of the rack, whereby said lteeth of said raclrsection may be engaged by the pawl Without engaging the teeth of the rack.

MICHAEL F. CARR.

Images