US1284543A - Gear-planer. - Google Patents

Description

w. F. ZIMMERMANN.

GEAR PLANER.

APPLICATIO! FILED FEB. 3, I917.

Patented Nov. 12, 1918.

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GEAR PLANER.

APPLICATiON FILED FEB. 3, 19:1.

ml MW 5 v; T m 4 H M m 3. N h w I UNITED STATES PATENT OFFICE.

WILLIAM F. ZIMMERMANN, OF NEWARK, NEW JERSEY, ASSIGNOIB. '10 GOULD & EBER- EIABDT, 0F NEWARK, NEW JERSEY, A COBPORATION-OF NEW JERSEY.

GEAR-PLANEB.

Specification of Letters Patent. v Patented Nov. 1918.

Application filed February 3, 1917. Serial No. 146,345.

to apply the principle thereof, so as to distinguish it from other inventions and to enable any person skilled in the 'art to which it appertains or with which it is most nearly connected to make, construct, and use the same.

This invention relates primarily to a gear planing machine and more particularly to a machine adapted to operate upon a plurality of blanks.

This invention contemplates as its primary object, a means for locking or securely holding the work spindles during the cutting operation.

Another object is to provide an adjusting means for said spindle locking mechanism.

Other objects will be apparent from, and are incorporated in the annexed drawings and in the following description, which sets forth in detail, certain contrivances embodying means constituting however, but one of the various mechanical forms in which the principle of the invention may be used.

The novelty of the invention will be readily understood from the drawings, which show a construction for practising the invention in its preferred form, and from the following description thereof, the invention being more specifically pointed out and distinctly claimed in the claims annexed to said description.

In the drawings:

Figure 1 is a fragmentary side elevation of a gear planing machine. I

Fig. 2 is a diagrammatic view of the gearmg.

Fig. 3 is a sectional view atm m, of Figs. 1, 4 and 9.

Fig. '4 is a side elevation of Fig. 3 showing the casing removed to illustrate the interior. v

Fig. 5 is a sectional view at a a, of Fig.3.

Fig. 6 is a sectional view at g 3/1 of Figs.

1, 4 and 9 and illustrates the index driving mechanism.

Fig. 7 is an isometric view of the locking cam.

Fig. 8 is a development of the locking cam.

Fig. 9 is aside elevation of the intermittent indexing mechanism.

Fig. 10 is a front elevation illustrating the plurality of cutting tools.

Referring particularly to Fig. 1, the crank gear 1 is rotatably mounted in the frame 2'. A crank or lever 3 is suitably pivoted to the ram 4, and is hinged at its other end in any Well known manner. An oscillating movement is imparted to the crank 3 from the crank gear 1, in the customary way employed in similar machines. Y

The ram 4 is provided with a tool slide 5 having mounted therein a plurality of cutting tools 6. A plurality of work spindles 7, is mounted in the forward part of the frame 2, to which the bevel gears8 to be cut, are secured. The helicoidal gears 9, intermeshing with each other, are fastened to said work spindles 7, and any of their number may be engaged by the helicoidal gears 10. The helicoidal gears 10 are secured to and rotatable with the index shaft 11, which shaft is connected to the intermittent shaft 12 by suitable change gears 13. The lantern gear 14L is secured to said index shaft 12 and is intermittently operated by a two-lobed cam 15 secured to the bevel gear 16, which gear is connected to and rotated by crank gear 1 through the bevel gears 17, 18 and 19.

Motion can be transmitted to the pulley 20, from any suitable source, to rotate the crank gear 1 through the crank pinion 21, and then through the bevel gears 19, 18, 17 and 16 to the double-lobed cam 15, which is so geared that for each revolution of the crank gear 1, the two-lobed cam 15 will make a half-revolution to engage one of the lobes with one of the pins 22 of the lantern gear to impart a definite predetermined angular motion, to said lantern gear 14, which angular motion is transmitted to the work spindle 7 by means of the change gears 13 and the helicoidal gears 10 and 9. The locking plate 23 is also secured to the bevel gear 16 adjacent to the double-lobed cam 15, and is so arranged that when the double:

lobed cam is disengaged from the lantern gear, the periphery 24 of said plate 23, w ll .be in contact with the projection of the pin rotated during the cutting stroke.

The mechanism just described is so arranged that during therearward stroke or the cutting tools 6, the indexing mechanism is .set in'operation and the spindles 7 are each indexed for one tooth and the indexing mechanism is locked at each forward stroke of the cutting tools." Any suitable feeding mechanism can be applied for the purpose of properly feeding the tools.

The looking or holding mechanism for the work spindles will now be described.

The cam 27 is rotated by the bevel gear 16 through the key 28 and is provided with a groove 33 similar to the development shown in Fig. 8. The lever 29 which is pivoted on the shaft 30 is provided with an arm 31 in which suitable pins or rollers 32 are arranged to engage with and be operated by the cam groove 33. Other arms 3% of the said lever 29 are provided with suitable shoes 35 which are in contact with the peripheral groove 36 in the locking member 37, the latter being suitably keyed to the index shaft 11. A clamp nut 38 is threaded to the shaft 11 and is arranged to adjust the locking member 37 endwise upon said shaft 11. A conical depression 39 is provided in said locking member 37 to coperate with the conically shaped member 40. Two nuts d1 are so arranged that said conically shaped member 40 can be adjusted endwise, and a small screw 42 prevents rotation.

The operation of the locking mechanism will now be described.

The cam 27 is rotated by the gear 16 and oscillates the lever 29 twice during each revolution or once for each indexing movement. This oscillation of the lever 29, is so arranged that it takes place immediately after the lantern gear has come to rest, to move the shaft 11 in the direction of the arrow asshown in Fig. 2. The end motion imparted to the shaft 11 tends to rotate the helicoidal gears 9 in the directions shown by the arrows. It will be noticed that the two center gears have rotary motion 'in an opposite direction thereby forming substantial lock for the work spindles. The locking effeet can be varied by adjusting the clamp nut 38 to alter the relative positions of the work spindles with the locking cam.

The conical member 40 is so adjustedthat when the work spindles are locked, the locking member 37 and conical member 40 are in engagement to prevent any rotary motion to the shaft 11.

masses The locking device as described provides substantially a positive lock which is adjustable to meet thevarying conditions of wear'and freedom between the parts.

This device will lock the work spindles in any angular position, which is not possible with a positive locking device.

The drawings illustrate an even number of work spindles and it will be noticed that both the end helicoidal driving gears 10 are moved endwise to efiect a' locking of the spindles.

Should the construction be such that an odd number of spindles is used, then at least one or an odd number of driving gears must be moved endwise to get the locking efiect.

In either of the foregoing constructions it is possible to move only one driving gear to get the locking eflect but the locking will not be done so quickly, and a greater end movement is necessary than is required when more than one gear is moved.

Having described my invention. I claim as new and desire to secure by Letters Patent:

1. The combination with a plurality of spindles, of means to intermittently rotate said spindles, and means to set up an opposed direction of rotation in said spindles to lock same between the intermittent rotations.

2. The combination with a plurality of spindles, of gears secured to each of said spindles and intermeshing, means to intermittently rotate said gears, and means to roll said ears in opposed directions to lock said spindles between the intermittent rotations.

3. The combination with a plurality of spindles, of driven gears secured to said spindles and 'intermeshing, driving gears meshing with said driven gears, means to intermittently rotate said driving gears, and means to move said driving gears axially to set up an opposed direction of rotation in said spindles to lock same.

4. The combination with a plurality of spindles, of driven gears secured to said spindles and intermeshing, driving gears meshing with said driven gears, a shaft spindles, means to intermittently rotate said shaft, and means to move said shaft axially between the intermittent rotations.

6. The combination with a plurality of spindles, of a shaft connected to said spindles, a second shaft arranged to rotate con tinuously, means operated by said second shaft to intermittently rotate said. first connected to said driving gears, means to mentioned shaft, and other means operated by said second shaft to move said first mentioned shaft axially during the non-rotatlve perlod.

7. The combination with a plurahty of spindles, of a shaft connected to said spindles, a second shaft rotating contin-- uously, means operated by said secondshaft to intermittently rotate said first mentioned shaft, a cam connected to and rotating with said second shaft, a locking member secured to said first mentioned shaft, and a leverconnectin said cam and locking member to periodica y move said first mentioned shaft axially durin the non-rotative period.

9. The com ination with a plurality of spindles, of a shaft connected to said spindles, means to intermittently rotate said shaft, and a cam to periodically move said shaft axially during the non-rotative period.

10. The combination with a plurality of spindles, of a shaft connected to said spindles, means to intermittently rotate said shaft, a boxing member rotativelv secured to said shaft, a cam to periodicall move said locking member and shaft axia l and means to adjust said locking member and cam relatively to each other.

11. The combination with a plurality of spindles, of a shaft connected to said spindles, means to intermittently rotate said shaft, a cam to periodically move said shaft axially, and an abutment to limit the axial movement of said shaft.

12. The combination with a plurality of spindles, of a shaft connected to said spindles, means to intermittently rotate said shaft, a locking member rotatively secured to said shaft, a, stationary member, and means to move said locking member and shaft axially to cooperate with said statiom ary member to prevent rotation of said shaft and to limit the axial motion.

13. The combination with a plurality of spindles, of a shaft connected to said spindles, means to intermittently rotate said s aft, a locking member rotatively secured to said shaft, a stationary member, means to movesaid locking member and shaft axially to cooperate with said" stationary member to prevent rotation of said shaft, and'means to adjust said stationary member relatively tosaid locking member.

14.. The combination with a plurality of spindles, of a shaft connected to said spindles, means to intermittently rotate said s aft, a locking member rotatively secured to salo' shaft, a cam to periodicallv move said locking member and shaft axially, a stationary member to cooperate with said locking member to limit the axial movement and prevent rotation, means to adjust said locking member and cam relatively to each other, and means to adjust said stationary and locking members relatively to each other.

Signed this 2nd day of February, 1917.

WILLIAM F. ZIMMERMANN.

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