June 14, R. E. DIL-:NER 2,, TURRET INDEXING MECHANISM Fild April 5 Sheets-Sheet 1 F/GJ f Arrow/Ys June 14, R. E. y A. E. DRISSNER ETAL 2,, TOOL TURRET INDEXING MECHANISM Filed Jan. 21, 5 Sheets-Sheet 1 F lG.l. INVENTORS; ALFRED E. Jan. 27, A. BECHLER 2,, TURRET INDEXING MECHANISM FOR AUTOMATIC LATHE Filed Dec. 21, 2 Sheets-Sheet 1 ‘III/Il’IIIIII/IIIIIII 2 Jan.
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The feed and quick traverse movements of the turret carriage 54, and the control mechanism therefor have been fully described in said Patent No. Another object is to provide a more dependable and improved clutch mechanism for operating the rotary indexing shaft for the turret and to eliminate dependence upon the movement of the Mrchanism turret indexijg to carry out the indexing operation. As turret 16 is rotated in aV clockwise direction, cant 76 will be caused to move toward indexing groove I and into the run-in portion I1.
Figure l1 is a side elevation of the’assembly of control dog-wheel and its drive and associated switches of the index control, the outer cover of the assembly housing being removed. A mechanims 36 having external threads 36″machined thereon is threaded into the nut The lathe comprises a bed Lheadstock 2, turret carriage 3 and tool post carriage 4. Drum is fixed on a shaft and when the turret carriage is in indecing turret index position, that is to say, at the extreme right, Fig.
US2833023A – Tool turret indexing mechanism – Google Patents
Each of the tool slides 27 reciproeates in ways A self-centering coil, or rat-trap spring’ has a tang immovably secured to a portion of handleand another tang rigidly secured in the hub member ‘ of turning wheel E hik Row Mcehanism ? The bed I extends for the length of the lathe and is supported on legs 5 with a c’hipand coolant pan 6 extending around the same at a position spaced from the floor.
In some known lathes of this type, a disc secured to the camshaft has cams secured to it which are adjustable along its circumference, the number of these cams being equal to the pins secured to the turret and adapted to be engaged by a moving indexing finger, as well as to the number of notches provided at the circumference of the turret and adapted to be engaged, after each indexing movement of the turret, by a locking finger.
Figure l is a plan view of the turret-slide end of a machine tool or turret lathe, in which my invention is incorporated, Vwith the turret-slide mounted thereon, certain parts being broken awa-y and others indicated by dotted lines tufret more clearly show the construction. V Thus, Y ‘7.
USA – Tool turret indexing mechanism – Google Patents
By providing and properly adjusting one or more index-stopping-dogs on andiabout the dog wheel. Turrt object is toprovide an enclosed and more dependable and compact mechanism for d operating the clamp ring for the turret. This cam 85 then actuatcs the second limit switch Another object of this invention is to provide turrent indexing mechanism oi the character just mentioned.
In the alternate position of the shoe 73, the clutch discs 75 co-operate with clutch facings 77 carried on and driven by a motor shaft 78, in turn driven by an indexing electric motor Rigidly secured to internally; cylindrical ‘ring member is a’ tubular cam’sleevewhich”. The piston 18 would be returned to its right-side starting position well before it had completed its stroke and the indexing of the turret 11 would consequently not be completed.
Rotation of shaft 39 is stopped by the trip mechanism I6, previously described, which effects disengagement of clutch l5 upon completionof the rotation required to effect locking and clamping of the turret l l.
Turrft movements are 60 effected by a piston deviceFigs. Moreover, inner peripheral faces 20c, 25e, and outer peripheral faces 20d, 25d, of. Since the indexing operation is now completed, the locking finger 62 engages another notch 63 by virtue of the force of a spring 65, thereby locking, the turret Another novel feature of the presentY invention re’- sides in the use of a normally closed limit switch A, Fig. June indexxing, R. A stud 33 on each slide 27 is engageable with the draw sleeve 31 so that the particular slide in operation reciprocates with the draw rod In this case the turret is five-sided and carries slides on each of the faces for successive operation of tools carried thereby with a workpiece turned in the spindle of the machine tool.
The worm 3keyed on shaft 28, meshes with mecyanism worm wheel 32 fixed to a hub or sleeve I 34 rotatably carried on shaft 33 Fig.
The invention is not concerned with this part of the construction. The number of pins 13 is equal to that of the tool holders 10 mechaism to that of drivers 14 mounted on a disc 15 fixed to the camshaft 3, said drivers 14 being adjustable along the circumference of disc The rocking motion of lever 58 is transmitted by a connecting rod 61 to arm 47 of the rocking member 45 the arm 48 of which is provided with a locking finger Thus, the indexing movement medhanism have been completed and the feed of the turret slides 27 again initiated.
In a turret indexing and locking mechanism for a machine-tool and in combination. A mechanism for rotatably’indexing an indexible turret carried by a slide of a machine tool and ‘comprising a plurality of cam follower means arranged on the underside of said turret in a circularly spaced series ‘concentric to the indexing axis of the turret, ‘a power driven rotatable Yindexing cam drum carried by said slide and provided with separate cam grooves one of which s van indexing cam groove and another of which is a turret locking and clamping cam turret, saidV cam follower means being adapted to successively engage insaid in-l dexing cam mechanim, interengageable annular “toothed lo?
This conditions the 4-way indexxing 99 to release the low feed clutch SA motorFig.
US2940341A – Turret indexing mechanism – Google Patents
Figure 6 is a plan view of a clamp ring structure shown in Fig. The clutch mechanism may beef any suitable type such as a toothed clutch such as that shown ora ball clutch, or the like. The control mechanism for effecting the multiple index movements required for passing over indexnig index stations will be later described. Means are indexinng to prevent the turret carriage 54 from moving forward, to the left in Figs.