US1319732A - Machine for setting turbine-blades - Google Patents

Description

G. V. SULLIVAN.

MACHINE FOR SETTING TURBINE BLADES.

APPLICATION FILED oc.4. ma. J

1,319,732'.- Patented 0t.2s,191s.

2 SHEETSSHEET l.

'ORNEX' G, V. SULLIVAN. MACHINE FOR SETTING TURBINE BLADES. APPLICATION FILED DEC.4. 1912.

1,319,732. Y Patented 001;.2s,1919.

2 SHEETS-SHEET 2.

01mm v .Axunuum r). WASHINGTON, and.

, 1 I lw f GILES VALIN SULLIVAN,

sAN EEANcIsco, cALIEoENIA, ASSIGNOR To BETHLE- HEM SHIPBUILDING CORPORATION, LTD, or BETHLEHEM, PENNSYLVANIA, A

CORPORATION OF DELAWARE.

tmg'TurbineBlades, of which theffollowinglis a specification.

y invention consistsof'a novel machine for setting turbine blades with respect to a turbine disk.

' It further consists of a novel construction of a machine for setting turbine blades on a turbine disk, whicl can be adapted to varione diameters of disks, wherein I provide novel means for rotatably supporting the turbine disk, in conjunctionwith means for rotating said disk and its adjuncts in a desired direction during the setting of the blades, means being provided for reversing the direction ofrotation of the disk so as to set the blades on an opposite portion thereof, whereby time and labor are reduced to a minimum and the blades are all evenly and accurately set and assembled in a much more expeditious and effective manner than is i possible where the blades have been inserted and calked in place by hand. 7

To the above ends, my invention consists of a novel construction and arrangement of gearing with respectjto an electric or other prime motor, whereby the shaft or head carrying the turbine disk or on which said disk is centered can be revolved in either dimeat and oigaaziatiea of rection or reversed at will, thereby permitting a limited rotary movement of the turbine disk and the turbine blade thereon until the latter contacts with a suitable abutment or jaw tool which arrests the move ment of said blade and effects the setting of the blades in a rapid and efiective manner.

For the purpose of illustrating my invention, I have shown in the accompanying drawings one form thereof which is at present preferredjby me, since the same will be found in practice togive satisfactory and reliable results, although itis to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is iijotflimited to, the precise arrange.

Specification of Letters Patent. Application filed December 4, 1918 Serial No.

these instrumeifi MACHINE FOR SETTING URBINE-BLADES.

Patented Oct. 28, 1919. 265,282. C

talities as herein shown and described, ex-

cept as required by the scopeof the appended claims. Figure 1 represents a frontele'vation of a machine for setting turbine blades embodying my invention, showing also an end elevation of a turbine disk and blades thereon.

Fig. 2 represents an end View or right hand elevation of Fig. 1.

Fig.3 representsa section on line 3-3 of Fig. 2 through theouter periphery of the turbine disk, showing a plan view of a portion of a turbine blade. i

Fig. 4 represents a perspective detail of the j aw tool, to0l post and their adjuncts.

Fig. Srepresentsa perspective view showing the manner of initially inserting a turbine blade in position.

corresponding parts.

Referring to the drawings,

1 designates the housing or frame-work of my novel machinefor setting turbine blades, which in the. present instance is shown as being built up out of the head of a Gisholt lathe changed to suit the conditions and requirements hereinafter referred to.

2 designates the shaft of the lathe head 8, which is provided with a chuck 4, which may be of any suitable or conventional type, as willbe understood from Fig. 2, said shaft Qbeing mounted in suitable bearings on said frame-work or housing.

5 designates an electric or other prime motor, which is reversible, whereby the shaft 6, which is mounted in suitable bearings, may be rotated at will in either direction, said shaft carrying the worm 7, which is in mesh with the worm gear 8, which I have shown as being fitted on or attached to one of the stepped cones 9, it being understood that said worm gear 8, cone9 and shaft 2 r0- tate in unison, 1O designating the smaller member of the cone surface of the lathe e011:

"2, so as as aerate raises therewith,"

said pinion 11 meshing with the gear 12, which is mounted on the shaft 18, which revolves in suitable bearings 14.

15' designates a pinion mounted on the shaft 13 and in mesh with the gear 16, which is mounted on the shaft 2. 17 designates a standard having on its upper portion 18 a slotted jaw tool or abutment 19, whose construction will be understood-from the perspective view in Fig. 4, said jaw tool 19 being clamped in position by any suitable means, as will be understood from said figure, and being capable of being moved towardor away from the turbine, disk, so as to accommodate disks of varying diameters.

20 designates the turbine disk to be bladed, which comprises a suitable web or body portion having a peripheral head or rim 21, whose contour in cross-section will be best understood from Figs. 3 and 5, said head or rinr being shown as a polygonal enlargement extending peripherally around the turbinedisk body, and having as at the points '22 in its circumference, radial cut away portions in the periphery of the head 21, which are cut down, flush with each side: of said web or body portion, as best seen in Fig. 5.

23 designates the turbine blade, which may be of the usual form and character, each being provided with a base portion 24:, as seen in Figs. 3 and 5, and each of said 1 base portions having a slot therein formed by the walls 25 and 26, which conform to the contour of the peripheral rim or head 21, the rear wall of said slot being open, as

indicated at 27.

The method of setting the turbine blades on a turbine disk is as follows:

The turbine disk having been suitably centered in the jaws 28 of the chuck 4, seen in Fig. 2, the turbine blades are slipped on the turbine disk through the slots 22 seen in: Figs. 2 and 5, which slots at the time of the introduction of a blade 23 may be located for instance either above the abutmentor jaw tool 19 as .atabout the point A--A above the jaw tool or below said jaw tool, as at about the point B-B. A light tap of a hammer starts the blade on the rim 21 of the disk, then the motor 5 is i started, and by the revolution of the disk 20, the blade is brought into contactwith the jaw tool on the tool post. When the parts are in the position seen in Fig. 2, assuming that a turbine blade has been placed 1n position in the slot 22, when it was above the jaw tool 19, it willbe understood, assuming the rotation of the turbine blade to be in the direction of the arrow a, that the blade 23 has come to rest against the top of the abutment 19 and that the rotation of the turbine blade will continue until said turbine blade 23 seen immediately above thejaw tool 19is contiguous to. the Wall 29 of the turbine blade 23 seen at the right of Fig. 2. The motor is stopped at this point and its direction of rotation isnow reversed, whereupon the turbine blade 23 seen at the lower left-hand portion of Fig. 2, having been placed in the position seen, will abut against the bottom ofthe jaw tool 19 and the rotation of the turbine disk 20 in a direction opposite to the arrow at, will bring the Wall 30 of said turbine blade 23 seen at the left of Fig. 2 below the jaw tool against the wall 31 of the turbine blade 23 seen at the right ofFig. 2.

The operation is thus repeated,the direction of the rotation of the motor being alternately reversed until the .disk has been completely bladed.

It will be seen from the-foregoing that after the application of the first blade and the securing of it in place upon the rim of the turbine disk, the operation ofapplying additional blades is continuous, until the total which the disk will carry has been applied. The entire operation is one of the application of blades and the alternate reversal of the turbine disk, the reversal becoming gradually less in circumferential eX- It will be understood that the contour of the slot 19 in the j aw tool 19 can be varied, if desired, and said jaw tool can be moved toward or away from the chuck 4 by loosening the bolts 28 and the clamping plate 29,

thereby permitting the shifting of said jaw tool, or, if desired, the tool post 17 and its adjuncts can be shifted to accommodate turbine disks of different diameters.

By my novel machine for setting turbine 4 blades, it will be apparent that a blade is set during each partial rotation of the turbine disk in either direction, so .that time and labor are economized and all the turbine blades are evenly set withgrespect to the turbine disk, so that no subsequent rectifying of the blades is necessary, which rectifying is necessary where the turbinev blades have been inserted and calked'by hand.

It will be understood that all theturbine blades as 23, 23, 2?)",23 and 23 are identical, and that I have used thedifferent designations therefor, forthe purpose of clearly explaining the operations referred to.

While I have shown but one type of turbine disk having a rim of the configuration and contourof the slot in the 'coacting turbine blades seen'in Figs. .3 and 5, it will be effect evident that the broad principle of my invention is equally applicable to turbine disks having rims of different contour and turbine blades differently slotted from the construction shown.

It will now be apparent that I have de vised a novel and useful construction of a machine for setting turbine blades which embodies the features of advantage enumerated as desirable in the statement of the in- 1. In a machine for setting turbine blades on a turbine disk, means to rotate said disk, and means to engage a turbine blade assembled on said disk and to effect the setting of such blade in proper position on said disk during the rotation of the latter.

2. In a machine for setting turbine blades on a turbine disk, means to rotate said disk, and an abutment adapted to engage a turbine blade assembled on said disk and to the setting of such blade in proper position on said disk during the rotation of thelatter,in combination with means for reversing the direction of rotation of said disk.

3. In a machine for setting turbine blades on a turbine disk, a support for a turbine disk, means for rotating said'support and disk in either direction, and a slotted abutment adapted to engage a turbine blade and arrest its movement during the limited continued rotation of said support and disk.

4. In a machine for setting turbine blades on a turbine disk, a

disk, means for rotating said support and disk in either direction, and a slotted abutment adapted to engage a turbine blade and arrest its movement during the limited continued rotation of said support and disk, in

Copies of this patent may be obtained for five cents each, by addressing the support for a turbine combination with means for adjusting the position of said abutment with respect to said turbine disk support.

5. In a machine for setting turbine blades on a turbine disk, means for supportingand rotating a turbine disk, means for reversing the direction of rotation of said disk, and means for arresting the movement of a turbine blade with respect to said disk during the rotation of the latter in either direction.

6. In a machine for setting turbine blades on a turbine disk, a motor, a motor shaft, a worm on said motor shaft, a shaft located above said motor shaft, a worm carried thereby, a pinion on said latter shaft, a gear in mesh with said pinion, an upper shaft on which said gear is mounted, bearings for said upper shaft, a pinion on said latter shaft, a gear on the shaft carrying said worm, a chuck for a turbine disk on said worm shaft, and an abutment adapted to be adjusted with respect to said chuck for arresting the movement of a turbine blade with respect to said disk.

7. In a machine for setting turbine blades on a turbine disk, a motor, a motor shaft, a

thereby, a pinion on said latter shaft, a gear in mesh with said pinion, an upper shaft on which said gear is mounted, bearings for said upper shaft, a pinion on said latter shaft, a gear on the shaft carrying said worm, a chuck for a turbine disk on said worm shaft, and an abutment adapted to be adjusted with respect to said chuck for arresting the movement of a turbine blade with respect to saiddisk, said motor being capable of rotation in either direction.

8. In a machine for setting turbine blades, means for centering a turbine disk, means for rotating said disk in opposite directions, and an abutment or jaw tool having a projecting member located in proximity to the rim of said turbine disk and adapted to arrest the movement of the turbine blade with respect to said turbine disk.

GILES VALINTINE SULLIVAN.

Witnesses:

MAURICE AsHER, F. C. KOBELY.

Washington, D. G.

Images