SYSTEME D'ALESAGE AVEC REGLAGE DE GRANDE PRECISION

ULTRA-ADJUST BORING AND MILLING SYSTEM

Abrégé anglais

ABSTRACT
A tool having a shank, cartridges on the shank
positioned by a screw having two externally threaded parts
which engage two internally threaded sleeves which in turn
engage threaded openings in the cartridges. One of the
threaded openings being right-hand thread and the other
opening being left-hand thread. Thus, the cartridges can be
moved laterally together or individually by rotating the screw
or any of the sleeves.

Revendications

The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. A boring tool comprising a shank,
said shank having a transversally disposed slot therein,
a first cartridge and a second cartridge slidably supported in said slot,
said first cartridge having a bore with a left-hand thread therein,
said second cartridge having a bore with a right-hand thread therein,
a first sleeve threadably received in said first cartridge and a second
sleeve threadably received in said second cartridge,
a screw having a first left hand threaded part engaging internal thread
on said first sleeve and second part on said screw threadably engaging an internal
thread on the second sleeve,
said screw parts being fixed together whereby the cartridges can be
moved laterally individually toward and away from each other by rotating said screw
or by rotating either said sleeve and a locking screw extending through said shank
engaging said screw for locking said screw in position.
2. The tool recited in Claim 1 wherein each said cartridge has a
cutting insert fixed thereto.
3. The tool recited in claim 1 wherein said laterally extending slot
has a cylindrical part and two flat planar parts disposed generally parallel to the
longitudinal axis of said shank,

each said cartridge has a cylindrical part slidably
received in said cylindrical part of said slot and two flat
planar parts slidably engaging said planar parts of said
cartridges defining said slot.
4. The tool recited in Claim 3 wherein said first
screw part and said second screw part are connected together
by an integral reduced diameter portion and each side of said
reduced diameter portion is connected to said threaded part by
a tapered portion and said locking screw 22 has a frusto-conical
end engaging said reduced size parts.
5. The tool recited in Claim 3 wherein said sleeve
is threadably received in a threaded bore disposed concentric
to said cylindrical part.
-6-

Description

::~15Z306
1 ¦ GENERAL DESCRIPTION OF THE INVENTION
I
2 ¦ A cutting tool is disclosed having a cylindrical
¦ shank with a laterally disposed slot in which two inser~
4 ¦ cartridges are slidably supported. Each said insert cartridge
8 ¦ has an internally threaded bore therein, said internally
¦ threaded bores receive an internally threaded sleeve which is
¦ also externally threaded. The exter`nal threads on the sleeves
¦ engage the internal threads on said cartridges. One of the
~¦ threaded bore in one sleeve is a left~hand thread and the
~¦ other said bore having a right-hand thread. A screw having a
~¦ first part and a second part integrally connected together,
~2¦ the first part threadably engages the internal threads on the
B¦ first sleeve and the second screw part threadably engaging the
14 ¦ internal threads on the second sleeve. Thus, the cartridges
¦ can be moved away from one another by rotating the screw and
¦ the cartridges may be adjusted in or out individually by
q ¦ adjusting the sleeves.
1~ I
9 ¦ OBJECTS OF THE INVE~TION
~0 ¦ It is an object of the invention to provide a
2~ ¦ precision adjustable cutting tool having adjustable inserts
a2 ¦ which can be adjusted toward and away from each other by
28 rotating the screw in a first or a second direction and the
2~ inserts can be individually adjusted toward and away from each
2~ other by rotating individual screws.
26 Another object of the invention is to provide a
27 cuttiny tool support with cutting tools that are individually
2~ adjustable wherein said cutting tool support is simple in
2~ construction, economical to manufacture and simple and
9~ efficient to use.
91 Another object of the invention is to provide an
~2 improved cutting tool.

306
1 With the above and other objects in view, the
2 present invention consists of the combination and arrangement
8 of parts hereinafter more fully described, illustrated in the
accompanying drawing and more particulary pointed out in the
appended claims, it being understood that changes may be made
~ in the form, size, proportions and minor details of
7 construction without departing from the spirit or sacrificing
8 any of the advantages of the invention.
0 GENERAL DESCRIPTION OF THE DRAWINGS
~1 Fig. 1 is a view of a tool according to the
lX ¦ invention having the upper end removed for better
~8 ¦ understanding.
¦ Fig. 2 is a view similar to Fig. 1 rotated at right
¦ angles to the view shown in Fig. 1.
6 ¦ Fig. 3 is a longitudinal cross-sectional view taken
¦ on Line 3-3 of Fig. 1.
18 Fig. 4 is an exposed view showing the screws and
19 sleeves according to the invention.
21 DETAILED DESCRIPTION OF THE DRAWINGS
~ Now, with more particular reference to the drawing,
23 the tool indicated generally at 10 attached to a cylindrical
2~ shank or body 11 with a diametrically extending slot 16
2$ extending across the shank from one side thereof to the other.
2~ The slot has two parallel sides 30 and 31 which receives the
2~ rectangular part of the cartridges 14 and 150 Each cartridge
2B carries a cutting insert 12 The slot has a cylindrical part
2~ 32, which receives the cylindrical portion 33 of the cartridge
16 and the cylindrical part 32 of the slot at the opposite
end receives the cylindrical part of the cartridge 15~

ll~;Z3U6 l ~'
Each cartrid~e has an internally threaded bore 34
and 35 which threadably receives the threaded sleeve 17 and
8 18, The threaded sleeves are externally threaded and one end
4 having a left hand thread and the other a right hand thread
and internally threaded to receive the first screw part 19 and
~ ¦ the second screw part 20 respectively. The threads on the
q screw 19 are of different hand than the threads on the screw
8 20 so that the screw 19 which is integrally attached to the
9 screw 20 by the intermediate member 21 restrains the screw
~0 parts 19 and 20 to rotate together and when they rotate in one
¦ direction they pull the sleeves 17 and 18 and the cartridges
~2 14 and lS towards one another and when they rotate in th~
lB opposite direction they push the cartridges 14 and 15 away
14 from one another. Each cartridge 14 and 15 can be moved
independent of the other by rotating the sleeves 17 or 18 to
~6 move the cartridge 14 or 15.
The inner end of the screw parts 19 and 20 have
~B rusto-conical ends 26 and 27 respectively. These
19 frusto-conical ends engage the frusto-conical end 23 on the
screw 22,
21 The screws 19 and 20 can be locked in lateral
~2 ¦ position by tightening the screw 22 to bring its
2~ frusto-conical end 23 into engagement with ends 26 and 27 of
2~ the screw parts 19 and 20, When the screw parts 19 and 20 are
) held in position~the cartridges 14 and 15 can be moved
~B independent of each other radially of the shank by loosening
27 screw 22 and then rotating either of sleeves 17 or 18 to
28 ad~ust their position then re~ightening screw 2~ to clamp it~
~9 The cartridyes can also be moved together ~rom side to side by
~0 loosening the screw 22 and rotating the screw parts 19 and 20
8~ one way or the other, thus moving the slee`ves 17 and 18 toward
æ
-3-

l:ls2ao6
1 or away from one another and with them moving the cartridges
¦ 14 and 15 toward or away from one another.
8 ¦ The screw parts 19 and 20 can be, for example, 3/8"
¦ in diameter and have 24 threads per inch. The internal
¦ threads on the sleeves 17 and 18 will, of course, be of the
¦ same diameter and thread size and the same hand as the
~ ! external threads on the screw parts 19 and 20.
8¦ The external threads on sleeves 17 and 18 will be,
9¦ for example, 1/2l' in diameter and have 20 threads per inch,
one of them right hand and the other left hand. The sleeve 17
¦ will have right hand threads and the screw 18 will have left
2¦ hand threads both inside and out and the sleeve 17 have left '.
18¦ hand threads both inside and outside. ,~¦
4¦ The lock screw 22 can have any suitable number of
1~¦ threads. Thus, by rotating the screw parts 19 and 20 through ;
~¦ the intermediate member 21 the cartridges are moved together
¦ one direction or the other depending on which direction they
~81 were rotated. By rotating the sleeves 17 or 18 the cartridges
~¦ will be adjusted toward or away rom one another and
201 independent of each other. ,
21¦ The foregoing specification sets forth the invention
~21 in its preferred, practical forms but the structure shown is
2$1 capable of modification within a range of equivalents without
æ~¦ departing from the invention which is to be understood is
~B broadly novel as is commensurate with the appended claims.
2~1
2~1 .
2~1
~1
~1 ..
a~2 .