US1499939A - Shaft-turning tool - Google Patents

Description

v ,499,939 UHY if 19% w. z. LINDERs SHAFT TURNING TOOL Filed Dem-4, 1920 2 Sheem--SheeD 1 Attorney W. Z. LINDERS SHAFT TURNING TOOL l Filed Dec. 2 Sheets-Sheet 2 tzorzey.

Patented July l, i924.

WILLIAM Z. LINDERS, OF ST. LOUIS, MISSOURI, ASSIGNOR TO NOR-THUESTERN MACHINE CORPORATION, OF ST. LOUIS, MISSOURI, A CORPORATION OF\MIS SOURI.

SHAFT-TURNING- TOOL.

Application filed. December 4, 1920. Serial No. 428,246.

T0 all 10h-0m t may concern:

Be it known that I, WILLIAM Z. LrNDERs, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Shaft- Turning Tools, of which the following is a full, clear, and eXact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention has relation to improvements in shaft-turning tools and consists in the novel features of construction more fully set forth in the specification and pointed out in the claims.

The present invention is particularly directed to tools for turning down engine crank shafts in order to make the same true after they have become worn through continued use.

It is well understood that through the loosening of the bearings, crank shafts will get out of true after a certain period, and it is the purpose of the present invention to provide a tool for again truing the crank shafts in a simple and efficient manner.

The object of the present invention is to provide a tool of the character referred to that is simple in construction and one that may be quickly applied.

A further object is to provide a sha-ftturning tool that may be adjusted to operate efficiently on shafts of various diameters within certain limits.

Further and other advantages will be better apparent from a detailed description of the invention in connection with the accompanying drawings, in which,-

Figure 1 is a top plan view of my invention, with parts broken away and parts shown in section.

Figure 2 is a side elevation of the same.

Figure 3 is a vertical cross section on the zigzag line 3-3 of Figure 2.

Figure 4 is a detached enlarged view of one of the bearing blocks for the shaft.

Figure 5 is an end elevation of the block shown in Figure 4.

Figure 6 is a side elevation of the bearing block carrying the cutter blade, parts of said block and blade being broken away.

Figure 7 is an end elevation of the block shown in Figure 6.

Figure 8 is a perspective view of the bearing block that carriesy the cutter blade.

Referring to the drawings more particularly, 1 and 2 represent U-shaped frame members hinged at 3 and provided with a clamping bolt 4 and nut 5 opposite the hinge. The frames 1 and 2 are provided with marginal shoulders 6 and 6, respectively, said shoulders providing between them guideways 7 and 7 wherein oppositely disposed bearing blocks 8 and 8 are adapted to slide. The bearing block 8, shown at the left side of Figure. 2, is provided with two pairs of oppositely disposed ears 9, 9 between each pair of which are mounted rollers 10 for engaging on the periphery of any shaft S which itis desired to turn down. The block 8 is adjustable in the guideways 7 by means of an adjusting screw 11 extending through the yoke of the frame 1, said adjusting screw being provided on its outer end with a knurled head 12 for manipulating the same. When the block 8 has been suitably adjusted, it is adapted to be locked in position by a stud 18 operating through a slot 14 in the frame 1, said stud being threaded into the block 8 and provided on its outer end with a locking washer 15 interposed between the frame 1 and a locking nut 16.

The block 8 which operates in the guideways 7 of the frame 2 is provided with a transverse slot 17 wherein a cutter blade 18 is adjustably disposed. The block 8 is adj ustable in the frame 2 by means of a hollow screw 19, which lscrew traverses the yoke of the frame 2 and hub 20 projecting from said yoke, the inner end of the screw 19 being adapted to bear against the adjacent end of the block V8 and the outer end of the screw 19 being provided with a knurled head 21 for manipulating said screw. A lock nut 22 is provided for locking the shaft 19 when desired.

The hollow screw 19 is traversed by a second screw 23, the inner end of the screw 23 being adapted to traverse an opening 24 in the end of the block 8', whereby the inner end of said screw 23 may be brought into abutting relation with the adjacent end of the cutter blade 18. The outer end of the screw 23 is also provided with a knurled coiled spring 25 1s positioned between the knurled head 21 and the lrnurled head 211 and exerts pressure against the head 24 whereby said head and screw 23 are held against accidental displacement.

After the cutter blade 18 has been adjusted in the block 8, the same may be locked in its adjusted position by a stud 2G which traverses a slot 27 in the frame 2 and likewise traverses a slot 28 in the cutter blade, one end of which stud is screwed into the lower part of the block 8 while the opposite end is enveloped by a sleeve 29 over which is passed a lock nut 30 by virtue of which sleeve 29 is caused to bear down on the upper surface of the block 8, thereby binding the cutter blade 18 in the slot 17.

ln order that the blade 18 may engage the shaft S squarely, the cutter blade 18 is provided with an angular adjustment which, in the present instance, taires the form of a cylindrical member 31 operat ing through an opening through one side of the block. 8, said cylindrical member having' a reduce-d tlneaded extremity 33 which is adapted to screw int-o a threaded opening 3l in the sideof the block 8 opposite theopening 32. About midway of its extremities the cylindrical member 31 is provided with an annular recess 35, said recess being positioned withiny a central longitudinally disposed slot 36 in the block 8', said slot 36 communicating with the slot 1T. The blade 18 is provided near its forward end with a stud 37 having ahead 38 projecting into the .slot 36, and said head being of the same diameter as the width of the slot 36, thereby bearing against the sides of the slot. The cutter 18 is further provided near its rear end with a pin 391 said pin 39 projecting upwardljlv and into the recess 35 of the member 31. However, the pin 39 is of a diameter smaller than the width of the slot 36 so that upon screwing the member 30 into or out of the block 8, said pin 39 will be laterally moved within the slot 36, thereby oscillating the blade 18 in the slot 17 about the head 38 as a pivot. Since the slots 17 and 36 extend practically through the block 8, l provide a pair of stiffening pins 40 through the block 8 and traversing the slot 36. rlhe block 8 is provided on its inner end with oppositely disposed pairs of ears 41 between each pair of which are mounted rollers 42, similar to the rollers 10. y.

ln turning` down shaft for the purpose 'of truing the same, members 1 and 2 are uncoupled opposite the hinge 3` whereupon they may be placed over a shaft S and the bearing block 8 is then adjusted in the frame 1 so that the rollers 10 will bear on the periphery of the shaft. The block 8 is now locked in its position. by means of the lock nut 1G .vhereupon the block 8 may be brought into adjusted position,

Before adjusting the block 8, it is neces sary to see that the cutter blade 18 is suf-- iciently withdrawn in the slot 17 to permit of the rollers 42- engaging` the shaft S. Such being the case, the block 8 is advanced by means of the adjusting screw 19 and when the rollers 42 have engaged the shaft, the lock nut is utilized to hold block 8 in such adjusted position.

rllhe critter' is now adjusted by advancing the screw 23 by means of knurled head 2l and the cutter having been advanced so as to engage the shaft S, said cutter is locked in position by turning down on the locking nut 30. The Itool is now rotated on the shaft a suliicient distance in order to determine whether the blad-e 18 is taking off a square cut. lf such is the case, the blade 18 is properly adjusted, but if :if taper cut is being removed from the shaft, we known that our cutter is not square to the shaft and it becomes necessary to square the cutter blade by turning cylindrical member 32 a certain distance in order to swing the cutter blade to a position square with the shaft.

In order to determine the amount cylindrical member 30 has to be turned, l may provide on the base of said cylindrical member a micrometer adjustment and scale, such as shown in Figure 2.

Having squared the blade 18 and" having clamped the blade firmly in the block 8, I may now proceed with the cutting operation, and as successive cuts are removed from the shaft, the block 8 is gradually advanced in order to maintain the rollers )f2 in contact with the shaft, thereby insuring that the same will be turned down true.

From the above description, it will be apparent that l have provided a shaftturning tool that is not only simple in its operation, but is likewise simple in its adjustments and that said adjustments when once made are f1Xed and not liable to slip and cause an error to creep into the work.

Having described my invention, I claim:

1. A shaft-turning tool provided with' a frame consisting of hingedr separable members, means pivotally arranged on one of said members for locking said members together, a pair of bearing blocks slidably mounted in said frame, means for clamping one of said bearing blocks in the frame, a cutter positioned in the other bearing block, means for clamping the cutter therein, and means for feeding` said cutter block.

2. A shaft-turning tool provided with a frame having bearing bloelrs mounted therein, means for adjusting said blocks to the shaft, one of said blocks being provided with a cutter, and means for adjusting the cutter longitudinally and angularly in said block.

3. A shaft-turning tool provided with a pair of oppositely disposed Jframe members, said frame members having bearing blocks mounted therein, means for adjusting one of said vblocks to the shaft and clamping theJ same in adjusted position, means for adjusting the other block toward the shaft and temporarily locking the same, a cutter blade mounted in said last-mentioned block, means for clamping said cutter blade in the block, and means for feeding said block carrying the cutter blade.

4. A shaft-turning tool comprising a separable support, a pair of opposed bearing blocks mounted therein, each block having lugs projecting towards the opposite block, antifriction means mounted in said lugs, and adapted to engage the Work, cutting tool mounted in one of said blocks and means for adjusting said tool angularly relative to the shaft.

5. A shaft-turning tool provided With oppositely disposed frame members, bearing blocks in said frame members, the adjacent ends of said bearing blocks being provided with a pair of rollers in spaced apart relation, means for looking one of said bearing blocks in the frame, a cutter blade mounted in the other of said blocks2 means for locking the cutter blade therein, and means Jfor advancing the cutter block 1n the frame.

G. A shaft-turning tool provided With a pair of oppositely disposed bearing blocks, one of said bearing blocks being transversely slotted to receive a cutter bzlade and longitudinally slotted to receive a stud projecting from the cutter blade, and means for angularly adjusting the cutter blade about said stud as a pivot.

7. A shaft-turning 'tool provided with a pair of oppositely disposed frame members rovided with guideWays, bearing blocks slidably mounted in said guideWays, said bearing blocks being provided on adjacent ends with rollers in spaced apart relation, means for locking one of said bearing blocks in the frame, means for temporarily locking the opposite bearing block in the frame, a cutter blade adjustably mounted in said last mentioned bearing block, means for locking said cutter blade therein, andV means for advancing said block in the frame.

8. A turning tool comprising a support, a pair of oppositely disposed blocks mounted therein, means for moving said blocks in said support, a cutting tool pivotally arranged in one of said blocks, means for moving said tool longitudinally in its block, and means for operating said tool about its pivot whereby the cutting edge of said tool may be adjusted angularly relative t0 the aXis of the Work.

9. A turning tool comprising a support, a pair of oppositely disposed blocks mounted therein, means for moving said blocks in said support, a cutting tool pivotally arranged in one of said blocks, means Jfor moving said tool longitudinally in its block, means for operating said tool about its pivot whereby the cutting edge of said tool may be adjusted angularly relative to the aXis of the Work, and means forv locking the cutter in its block.

10. A turning tool comprising a support, a pair of oppositely disposed blocks mounted in said support, a cutting tool pivotally arranged in one of said blocks, means for adjusting said cutter block in said support, a member adjustably seated inthe cutter block, and means on said cutting tool in engagement With said adjustable member whereby said cutting tool may be operated about its pivot and adjusted relative to the Work.

In testimony whereof I hereunto affix my signature this 1st day of December, 1920.

WILLIAM Z. LINDERS.

Images