US1640719A

US1640719A - Slotting machine

Info

Publication number: US1640719A
Application number: US686559A
Authority: US
Inventors: Albert W Parkes
Original assignee: NILES BEMENTPOND CO
Current assignee: NILES BEMENTPOND CO; NILES-BEMENTPOND Co
Priority date: 1924-01-16
Filing date: 1924-01-16
Publication date: 1927-08-30
Anticipated expiration: 1944-08-30

Description

Aug. 30,1927.

A; W. PARKES SLOTTIPNG MACHINE 3 Sheets-Sheet 1 Filed Jan. 16, 1924 mvmron A TTORNEY Aug. 30,1927. 4 ,64 ,719

v A. W. PARKES- SLOTIING MACHINE 3 Shee'ts-Sheet 2 Filed Jan. 16, 1924 INVE/ITUR ATTORNEY Patented Augnj 30 1927.

UNITED STATES ALBERT wi rAnKEs, or DUNDAS, ONTARIO,

POND oomrnnm or new YORK, 1v. Y.,

CANADA, ssreNon TO NILESfBEMENT- A CORPORATION on NEW JnRsnY.

' sLo'rrrne MACHINE.

Application filed January 16,1924. Serial No. 686,559.

This invention relates to slotters and like machines having a work support and a re' ciprocat-ing tool slide adapted to operate on work carried by thework support. The WOIlL support ordinarily comprises a movable saddle carrying a slide thereon in turn'supporting a rotary work table and means is provided for intermittently feeding these three members in timed relationto the tool slide 1 Y reciprocation. Other means is provided for continuously traversing the said work supporting members. The primary ob ect of the invention is to provide an improved slotter of this type. Another. object of the invention is to provide interlocking means between the feeding and traversing means for preventing the simultaneous operative engagen'ientthereof with the worksupport- I ing members.

The tool slide can be operated from any convenient source of power and, in the drawings, I have illustrated the same as operated 1 by an electric motor. Another object of the invention is to provide an improved driving connection between this -motor and the tool slide, such connection including change speed gearing and a clutch and improved operating means therefor including an interlocking mechanism permittin the shifting of the gears only when the (ilutch is in the disengaged position.

With the above and other objects inview, my invention consists inthe features of construction and operation set forth in the following specification and illustrated in the accompanying drawings. In suchd-rawings anneXedhereto and forming a part of this specification, embodied in a vertical. crank slotter 'but it will be understood that the invention can be otherwise embodied and that the drawings are not to'be construed as denfiing or limit.

mg the scope'of the invention, the claims appended to this specification "being relied upon for that purpose.

Referring-to the figures of the drawings: Figure 1 is a front elevation of a vertical crank slotter embodying my invention! Fig; 2 is a.- rear end elevation thereof taken from the right-hand side of Fig. 1.

Fig. 31s a fragmentary rear view showing the work support.

Fig. 4 1s an enlarged fragmentary sectional view of the main driving mechanism.

12-12 of Fig. 4.

I have shown my invention Fig. is an end elevation thereof;

Fig. 6 is a fragmentarysectional: view taken on'line 6-6 of Fig. 11.

Fig. 7 is a fragmentary plan view of the feeding. and traversing mechanism. Fig. .8. is a horizontal sectional view through Fig. 7. 1 I Fig. 9 is a front elevation of Figs. 7 and 8. Fig. is a plan view, partially in section, of; the worksupportand its operating mechag nism. g

Fig. '11 is, an enlarged fragmentary front elevation of the gear shifting mechanism.

Fi .12 is a sectional vieW taken on line In the drawings, 1 indicates the bed and 2 the. upright or column of a vertical crank slotter. A tool slide 3 counterbalanced at 4: is guided for vertical reciprocation in the column. The tool slideis reciprocated by cranlrmechanism 5 operated. from a motor 6 through driving mechanism hereinafter described. A work support 7 is mounted. on the bed beneath the tool slide.

A gear 8 on the crank shaft 9 is driven from the. motor pinion 10 through the following mechanism: The motor pinion 10 "meshes with a gear 11 loose on a bearing 12 for a shaft 13. A clutch 14: splined to the shaft 13 is adapted to engage the gear with the shaft. The portion lt of the clutch can be shifted by means of a yoke 15 on a shaft 16. Movement of the clutch and yoke in one direction is adapted to engage the clutch and movement thereof in the opposite direction is adapted to apply a friction brakeat 17..

.Two shafts 1 8 and 19 are mounted in the gear box parallel with the shaft 13. pair of

gears

20 and 21 splined to the shaft 13 are adapted to mesh respectively with gears 22 and'23 on the shaft. 18. of gears 29'; and 25'splined to the shaft 13 are adapted to be meshed respectively with gears 26. and 27 on the shaft 18. A pairof gears 28 and 29 splined to the shaft 19 are adapted to be meshed respectively with gears 30 and I 19 is in mesh with the gear 8 on the'crank shaft. Eight driving speeds can be obtained by shifting the gearing just described.

:The gears Maud 25 can be shifted by means of a handle 33. on a shaft 34 carrying a yoke 35. engaging. the said gears. The gears 28. and 29 can be. shifted by means of A second pair a handle 36 on a shaft 37 carrying a yoke 88 engaging such gears. The gears and 21 can be shifted by means of a handle 89 on a shaft 40, a rod ll operatively connecting an arm 1-2 on the shaft with a yoke 42 en such gears. A latch 48 is provided on each handle for holding the gears in their shifted positions. Each of shafts 34;, 37 and 40 carries a disklike member lt provided with three notches a, 7) and 0. Three notches of each disk are adapted to be engaged by lateral projections on three arms radiating from a member l6 mounted on a shaft 47. isoperativcly connected by means of a rod 49 to an arm 50 on the clutch shif ing shaft 16. A red 51 operatively connects the arm d8 to an operating handle 52 on the column adjacent the operators usual position the machine. The arrangement of the parts is such that when the clutch is in the driving position (to the left, Fig. a), the projections -15 are engaged in certain of the notches a, Z) and 0. Therefore, the gears cannot be shifted until the clutch is disengaged,

such clutch disengaging action rotating the shaft l7 clockwise (Fig. 11) and withdrawing the projections l5 from the notches.

The work support comprises a saddle 53 slidable longitudinally on ways 5% of the bet 1, a slide 55 transversely slidable on ways 56 of the saddle, and a work table 57 rotat ably mounted on the slide. The saddle and slide are moved respectively by means of

screws

58 and 59. The table is rotated from a shaft 60 havinga worm 61 splined thereto and'meshing with a wo "n1 wheel 62on the work table. The. screw shaft 59 and shaft 60 extend rearwa-rdly parallel with the ways 56 on the saddle into a gear box 68 mounted on the saddle. The forward ends of

shafts

59 and 60 are squared at 59 and 6O respectively whereby the same can be rotated by hand for fine adjustments. Shaft 59 may also be rotated from the squared ends of a shaft 59" connected to shaft 59 through spiral gears 59 Gears 6% and 65, driven from a gear 66 on a shaft 67, are loosely mounted respectively on

shafts

59 and 60 within the gear box. Clutches 68 and 69 splined to

shafts

59 and 60 are adapted to operatively connect either gear with its shaft. A yoke 7 O engaging the clutches at its ends and pivoted at 71 is adapted to be operated by a clutch rod 72 pivoted to one end of the yoke at 7 3 and extending to the front of the machine whereby either

shaft

59 or 60 may be thrown into operation to move the slide and rotate the table respectively. The shaft 67 carries a bevel gear 7% at its inner end which meshes with a like gear splined to a shaft 76. Shaft 67 and gears 74 and 75 are rotatably supported on the saddle and move therewith along the shaft 76. This mechanism is described and An arm 4C8 on the shaft 47- claimed in patent to V7. J. Hagman No. 1,528,150 granted March 3, 1925.

The feeding of the work supporting elethrough a lever 79 mounted on one end of the shaft and engaging the cam. A second lever 80 on the forward end of shaft 77 is operatively connected by a link 81 to a disc 82. Thedisc 82 is loosely mounted on a shaft 88 directly adjacent a gear 8a also loose thereon. A double pawl 85 pivoted to the disc isadapted to engage the gear 84: and intermittently drive the same in either direction as will be understood. The pawl can be shifted on its pivot to either driving position by means of a handle 86. The shaft 83 is operatively connected to the shaft 7 6 through bevel gears 87 and 88 secured to such shafts respectively. A shaft 89 parallel with the shaft 83 is operatively connected to the saddle screw .58 by a pair of bevel gears 90. A. gear 91 splined to the shaft 89 is adapted by means of a rod 92 and a clutch yoke 92 to be shifted into and out of mesh with a gear 93 keyed to the shaft 83. A clutch 9e splined to the shaft 83 is adapted to operatively connect the gear 8% to such shaft. A spring 95 normally engages this clutch and the same is adapted to be disengaged in the manner hereinafter described, by means of arod 96 having a clutch yoke 96 engaging the clutch.

The operation of the feed mechanism is as follows: To feed the saddle 53, the gear 91 is placed in mesh with the gear 93, the clutch 9 f beingnormally engaged with the gear 84 by means of spring 95. If the slide 55 and table 57 are not to be fed, the clutches 68 and 69 are placed in the neutral position as shown in Fig. 10. The oscillation of the disc 82 will thereupon be transmitted to the screw 58 to intermittently feed the saddle. When it is desired to feed the slide 55 or to rotate the table 57, the gear 91 is disengaged from the-gear 93. The oscillations of the disc 82 are transmitted through the shaft 76 and the other mechanism described to the gears G l and 65 on the screw shaft 59 and table operating shaft 60. The clutch yoke 70 may be operated from the'ro'd 72 to engage either clutch 68 or 69 wit-h its gear and thereby drive either the screw shaft 59 or shaft 60 as desired. The slide is thereby fed along its ways and the table rotated from these shafts as will be understood.

Means is provided in connection withthe mechanism just described for continuously operating the saddle, slide and table shafts to effecttraversing movement of the saddle, slide and table.

98 on the motor shaft meshes with a gear 99 I have illustrated a motor 9! for performing this function. A pinion till alinement with the shaft 76. A bevelgear 101 loose on the shaft 100 is in mesh with the bevel gear 87 and a clutch 102 splined to the shaft 100 between bevel gears 88 and 101 is adapted to operatively connect the shaft 100 to either of such gears. The clutch 102 is engaged by. a. clutch shifting yoke 103 on a vertical I "an be shifted by meansof a rod 105 engag ing an arm 106 on the shaft and extending to the front of the machine.

It will be noted that both the feeding and traversing of the'work supporting members are accomplished through the same driving elements.

vides an interlock preventing the simultaneous engagement of the feeding and traversing means with such elements. The

rear end of the clutch shifting rod 96 is connected to a lever 10? pivoted at 108. The intermediate portion of this lever carries a roller109 engaging the end of an arm 110 secured to the vertical clutch shifting shaft 104. ,When the clutch 102 is in the neutral position, the roller 1'09 engages in notch 111 in the arm 110 and the feed clutch 9a is engaged with the gear 8t. l/Iovement of the rod 105 to engage the clutch 102 with either of bevel gears 88 and 101 cannot take place without forcing the roller 109 from the notch 111 and thereby disengaging the eed clutch 9 1. It will therefore'be seen that the feed clutch 94 and the traversing clutch 102 cannot be in driving en a ement simultaneously. The feed clutch 94: is normally held in engagement by the spring 95 and the engagement of the traversing clutch 102 automatically disengages the feed clutch against the action of the spring.

lVhat I claim is: v I 1. In a slotter, the combination of a base, a work support and a tool slide on the base, power operated means for reciprocating the tool slide, mechanism for intermittently feeding the work support synchronously with the said reciprocation, arclutch for disengaging the feeding means, power operated means including a pair of bevel gears and a clutch therebetween for continuously traversing the work support in either direction, and interlocking means preventing the simultaneous engagement of the clutches.

2. In a slotter, the combination of a base,- a work support anda tool slide on the base, power operated means for reciprocating the tool slide, mechanism for intermittently feeding the work support synchronously with the said reciprocation, a clutch for disengaging the feeding means, a spring normally operative to engage the clutch, power operated means including a clutch for continuously traversing the work support in either direction, means for shifting the last named clutch, and means automatically opershaft 104. The clutch The following mechanism proative to disengage the feeding clutch when engaging the traversing clutch.

3. In a slotter,'the combination of a base, a work supportand a tool slide on the base,

power operated means'for reciprocating the tool slide, a shaft in the base, mechanism including a ratchet gear on the shaft for intermittently feeding the work support synchronously with the said reciprocation, a clutch for disengaging the ratchet gear from the shaft, a'bevel gear on the shaft, a relatively right angular shaft, a pair of bevel gears loose thereon and in mesh with the said bevel engagement of the clutches.

4:. In a slotter, the combination of a base, a saddle longitudinally slidable thereon, a slide transversely slidable on the saddle, a

work table rotatable on'the slide, a tool support on the base, power operated means for reciprocating the tool support, mechanism for intermittently and selectively feeding the saddle, slide and table synchronously with the said reciprocation, power operatedmeans for continuously and selectively traversing the saddle, slide and table, and interlocking means preventing the simultaneous engagement of the feeding and traversing means.

5. In a slotter, the combination of a base, a saddle longitudinally slidable thereon, a slide transversely slidable on the saddle, a Work table rotatable on the slide, a tool support on the base, power operated means for reciprocating the tool support, a shaft in the base, mechanism for intermittently rotating theshaft synchronously with the said reciprocation for feeding, a shaft parallel with the first named shaft and operatively connected to the saddle to move the same, means providing an operative connection between the two shafts, a shaft at right angles tov the first named shaft and operatively connected thereto, means providing an operative connection between the third named shaft and the slide and table for moving the same, means for continuously rotating the -first named shaft for selectively traversing the saddle, slide and table, and interlocking means preventing the simultaneous engage ment of the feeding and traversing means 6. In a slotter, the combination of a base,

a work support and a tool slide on the base, 1

power operated means for reciprocating the tool slide, a feed shaft operatively connected to the work support, mechanism for inter-- mittently rotating the feed shaft to move the work support synchronously with the said reciprocation, a bevel gear on the feed shaft, a shaft at right an les to the feed shaft, a pair of bevel gears loose thereon and in mesh with the first named bevel gear, a motor operatively connected to the second base, a tool slide on the column over tire named shaft, a clutch splined to such shaft between the pair of bevel gears thereon, and means for engaging the clutch with either of said bevel gears, whereby said work support can be continuously traversed in opposite directions.

7. In a siotter, the combination of a base, a work support thereon, a column on the base, a tool slide on the column over the work support, a power element, an operative connection including changespeed gearing and a clutch between the power element and the slide for reciprocating the latter,

means for shifting the change speed gean ing, moa s for shifting the clutch, and interlocking mechanism between the said means for permitting shitting of the only when the clutch is disengaged.

8. In a slotter, the combination or a base, a work support thereon, a column on the the work support, a power element, an opera-- connection including change speed gearing and a clutch between the power element and the slide for reciprocating the latter, the said change speed gearing includ ing three oai-rs of sliding" gears, three shit ers for respectively sliding the said three pairs of gears, means for shifting the clutch,

and interlocking mechanism between the three shirters and the saldmeans for per mitting shifting of the gears only when the clutch is disengaged.

9. In a slotter, the combination of a work support thereon, a column on the.

base, a tool slide on the column over the work support, a motor mounted on the machine, an operative connection between motor and the slide for reciprocating latter, means for intermittently feeding work support from the motor, a motor for continuously traversing the work support, and means preventing the simultaneous operation oi both motors on the work support.

10. in a slotter, the combination of a base, a work support thereon, a column on the base, a toolslide on the columnover the work support, means for intermittently feedthe ing the work support, change speed gearsignature.

"LLBEBT W. PARKES.

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