CA1166433A - Boring bar - Google Patents
Boring barInfo
- Publication number
- CA1166433A CA1166433A CA000383211A CA383211A CA1166433A CA 1166433 A CA1166433 A CA 1166433A CA 000383211 A CA000383211 A CA 000383211A CA 383211 A CA383211 A CA 383211A CA 1166433 A CA1166433 A CA 1166433A
- Authority
- CA
- Canada
- Prior art keywords
- slide member
- cutting tool
- throughbore
- boring bar
- dial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Abstract of the Disclosure A boring bar adapted to accept a standard square cutting tool and in which the radial position of the cutting tool is adjustable The boring bar comprises an elongated body having a generally radially extending throughbore formed through it at one end. A cylindrical slide member is axially slidably positioned within the body throughbore and the slide member has a square bore formed axially through it and which is dimensioned to receive a standard square cutting tool there-in. Set screws threadably engage transverse bores in the slide member to lock the square cutting tool at any desired adjusted position with respect to the slide member. In addition, the inner radial end of the slide member is externally threaded and threadably cooperates with an annular dial. The dial is locked against axial movement with respect to the body so that rotation of the dial axially displaces the slide member with its attached square cutting tool. A novel fine adjustment mechanism for the slide member is also disclosed.
Description
l l66t33 BORING BAR
Bac~qround of the Invention .
I. Field of the Invention The present invention relates generally to boring bars and, more particularly, to a boring bar which accepts a $tandard square cutting tool and in which the radial position of the cutting tool is adjustable.
II De5cri tion of the Prior Art P
Tl-ere are a number of previously known boring bars and these boring bars are used in a plurality of different appli-cations. In general, however, eacl~ boring bar includes an elongated body having one end adapted to be positioned within and held by a tool holder or chuck of a rotary drive machine.
Thus, upon rotation of the machine, the boring bar body is rotatably driven around its axis.
A cutting tool or tool insert in turn is attached to the opposite end of the body of the boring bar. The cutting tool extends genelally radially from the axis of the boring bar body and has a cutting edge which performs the cutting operation on the work during a boring operation. In addition, there have been a number of previousl known boring bars in which the radial position of the tool with respect to the longituainal àxis of the boring bar is adjustable which correspondingly varies the diameter of the hole which is bored. These previously known boring bars, however, all suffer from a number of common dis-advantages.
One disadvalitage of these previously known boring bars is that the cutt ng tool or tool insert must be specially fabricated for the particular boring bar. ~hus J a boring bar constructed by one manufacturer will only accept cutting tools or tool inserts purchased from one, and usually the same, man~-facturer. Moreover, these cutting tools and t~ol inserts are ' ..,~
., ~ .
1 166~33 very expensive and the expense of the cutting tools and inSertS
is further aggrevated since the required tool or insert is available only from a single source.
A still ~urther disadva~tage of these previously kno~n boring bars is that the mechanisms for adjusting the radial position of the cutting tool have not been wholly satisfactory in use'. One problem with these previously known adjustable boring bars is that the cutting tool can be only' accurately adjusted to within a thousandth of an inch, more or less, of thè desired diameter to be bored. In many high preci-sion boring operations, however, a boring accuracy to within a ten thousandth of an inch, more or less, is requirea. In order to'obtain such high precisi~n, special boring bars must be then used. _ -A still'further disadvantage of these previously known boring bars is that the range of diameters which a single ' boring bar can cut is very limited, oftentimes to within a fraction of an inch. Thus, in order to be able to bore holes of different diameters over a relatively wide range, for example, several inches, it has been heretofore necessary for machine shops ana the like to maintain a pluràlity of different boring bars in stock wherein each boring bar is capable of cutting `
.. . , . -a different diameter range. miS solution, however, is undesir-able in view of the high cost of both the`boring bar and their ~' .. . . .
cutting tools or tool inserts.
Summary of the Present Invention ~ he present invention overcomes all of the above mentioned disadvantages of the previously known boring bars by providing an improved boring bar capable of accepting a standard square cutting tool and in which the radial position of the cutting tool with respect to the axis of the boring bar is . .
accurately adjustable over a wide range. ' '-.
1166~33 In brief, the invention provides a boring bar compris-ing: an elongated body having a transverse throughbore at one end, a slide member axially slidably positioned within said throughbore, said slide member having a s~uare bore formed axially through it, said square bore being dimensioned to slidably receive a standard square cutting tool therein, means for securing a standard square cutting tool to said slide member at an adjusted axial position, means for axially adjustable positioning said slide member in said body throughbore, wherein said slide member includes an externally threaded portion at one end and wherein said axial adjustment means further comprises an internally threaded annular dial which threadably engages the slide member threaded portion, and means for locking said dial within said body throughbore against axial movement, and wherein said dial includes an annular groove formed about its outer periphery which registers with a groove in the body thus forming an annular channel therebetween and wherein said locking means further comprises a plurality of ball bearings positioned within said channel.
In order to obtain fine adjustment of the radial position of the cutting tool, a cam is preferably rotatably mounted within the body of the boring bar and has a surface which frictionally engages a flat formed on the slide member.
Rotation of the cam with the resulting frictional engagement between the cam and the slide member causes a slight extension or retraction of the slide member, typically in the range of a few ten thousandth of an inch. The direction of rotation of the cam controls whether the cutting tools is slightly extended or slightly retracted.
ll66~33 Brief Descri tion of the Draw ng __~ P
A better understanding of the present invention will be had upon reference to the following description when read in conjunction with the accompanying drawi`ng, wherein like reference characters refer to like parts througl~out the several views, and in which: -FIG. 1 is a side view illustrating a prèferredembodiment of the boring bar of the present invention;
` FIG~ 2 is a fra~mentary sectional view of a portion thereof; and FIG. 3 is a sectional view taken substantially along line 3-3 in FIG. 2.
Detailed Description of a Preferred Embodiment of the Present Invention With reference first to FIG. 1, a preferred embodi-ment of the boring bar of the present invention is thereshown and includes an elongated body 10 having one end 12 adapted to be received within a tool holder or chuck of a rotary drive mechanism (not shown) which, upon activation, rotatably drives the boring bar about its longitudinal axis. A cutting tool assembly 14 is mounted in a manner to be subsequently described in greater detail in the opposite end 16 of the body 10 of the boring bar. Moxeover, it is the cutting tool assembly 14 and its mounting to the boring bar which forms the novelty of the instant invention while the remainaer of the body 10 of the boring bar may take any conventional form.
With reference now to FIGS. 2 and 3, the cutting tool assembly 14 is thereshown in greater detall and includes a transverse bore 18 which is formed through the end 16 of the boring bar body 10. A generally cylindrical slide member 20 is axially slidably positioned within this bore. The slide member 20 further includes an axial throughbore 22 having a square cross sectional shape as is best shown in FIG. 3.
_4_ ll~6~33 The 5quare throughbore 22 is dimensioned to slidably receive a standard square cutting tool 24 therein. As lS well known in the art, the square cutting tool 24 has a cutting edge 26 and is available in a number of standard sizes and types.
Such cutting tools 24 can be readily obtained at lo~ cost.
Still referring to FIGS. 2 and 3, at least one and preferably two set screws 28 threadahly engage transverse bores 30 in the slide member 20. These transvèrse bores 30 are open;
to the square bore 22 and, upon tightening, lock Llle cutting tool 24 to the slide member 20. Thus, the cutting tool 24 can .
be adjusted to any longitudinal position, and in doin~ so, vary the radial distance between the cutting edge 26 and the axis of the boring bar. When adjusted to the desired position, the tool 24 is locked in place by tightçning the sèt s rews 2B.
This adjustment, while not precision, nevertheless provides a great range of cutting diameters for the boring bar since the standard cutting too~s 24 are readily available in long lengths, for example, more than five inches.
Still referring to FIGS. 2 and 3, the sllde member includes an externally threaded portion 32 at its inner end while the boring bar throughbore 18 includes an elarged portion 34 at its inner end thus forming an annular abutment surface 36. An annular dial 38 is internally threaded at 40 and thread-ably engages the threaded portion 32 on the sliae member 20.
The annular dial 38, in addition, has an outside ~iameter substan-tially the same as the enlarged diameter portion 34 of the throughbore 18 so that the dial member 38 can be positioned within the enlarged diameter portion 34 and against the a~utment surface 36.
The annular dial 3~ further includes an annular V-shapea groove 46 about its outer periphery which registers with a V-shaped groove 48 in the boring bar bo~y 10. A plurality ; . .
.
~ 1~6~33 of ball ~earings 50, ~r~era~y of two different ~sizes, are then positioned within this channel 48 and lock the dial 38 against axial movement. Preferably, the bearings are positioned within the channel 48 through a hole 49 (FIG. l) in a boring bar body lO and this hole is subsequently closed by a suitable plug.
The slidab1~ adjustment of the cutting tool 24 with respect to the slide member 20 provides a rough adjustment of the radial distance between the axis of the boring bar and the cutting edge 26. Thereafter,~the rotation of th~ dial 38 radially displaces the slide member 20 with its attached cutting tool 24 in dependence upon tlle direction of rotation of the dial 38.
The dial 38 is capable of positioning the cutting edge 26 to the desired position within a thousandth of an inch or so.
Referring still to FIGS. 2 and 3, the present inven-tion further provides a fine adjustment means 60 capable of accurately positioning the cutting edge 26 to within a ten thousandth of an inch or so of its desired position. The fine adjustment means 60 comprises a flat 62 which is formed on one side of the slide member 20. A cam 64 is rotatably mounted within a bore 66 in the boring bar ~ody lO and has a cam surface 68 which faces the flat 62 on the slide member 20. The cam surface 68 is generally elliptical in shape on its side facing the slide member flat 62. Thus, when the minor axis of the cam surface 68 is aligned with the flat 62 as shown in FIG. 3, the cam surface 68 is 51ightly spaced from the flat 62 thus permitting free axial movement of the slide member 20 as the dial 38 is rotated. Conversely, as the cam 64 is turned in either a clockwise or counterclockwise direction, the cam surface 68 frictionally engages the flat 62.
As the cam 64 is rotated in a clockwise direction, as viewed in FIG. 2, the cam surface 68 frictionally engages the flat 62 and slightly compresses the slide member 20 and/or ~166433 dial 38 inwardly thus slightly retracting the cuttin~ edge 26.
Conversely, rotation of the cam 64 in a counterclockwise direction urges the slide member 20 and dial 38 slightly radially outwardly thus increasing tl-e radial position of the cutting edge 28 fron~
the axis of the boring bar. The precise extension or retraction of the cutting edge 26 which can be effected by the càm 64 is dependent upon the âmount of rotation of the cam 64 and the resulting increase of frictional engagement between the cam .
surface 6~ and the slide member flat 62.
Referring now to FIGS. 1 and 3, after the desired position of the cutting tool has been obtained, a set screw 70 in the body of the boring bar is tightened against the slide member 20 and loc~s the cuttin~ tool in its adjusted position.
- ~rom the foregoing, it can be seen that the boring bar of the present invention is greatly advantageous in a number of different respects. Perhaps most importantly, the boring bar of-the present invention uses standard square cutting tools 24 which are reaaily available at low cost. Consequently, the previously known necessity to purchase special cutting tools or cutting inserts for the boring bar is rendered unnecessary.
A still fùrther advantage of the boring bar of the present invention is the wide range of diameters ~hich can be cut by the boring bar. This wide range is due primarily to the ability to axially slide the standard cutting tool 24 to the :- - ' ' .
desired position with respect to the slide member 20 and then `
lock the cutting tool 24 to the slide member 20 by the set screws Such cutting tools 24 are available in relatively long lengths, for example, five inches.
A still further advantage of tlle l~oring bar of the present invention is that tlle radial distance of the cutting edge 26 and the axis of the boring bar can be easily and . ~ .
1~66~33 accurately adjusted, initially by the dial 38 and subsequently, by the cam 64 when high precision cutting is necessary.
Having described our invention, however, many modifications thereto will become apparent to those skilled in the art to which it pertains without deviation from the spirit of the invention as defined by the scope of the appended claims.
We claim : ` .
Bac~qround of the Invention .
I. Field of the Invention The present invention relates generally to boring bars and, more particularly, to a boring bar which accepts a $tandard square cutting tool and in which the radial position of the cutting tool is adjustable.
II De5cri tion of the Prior Art P
Tl-ere are a number of previously known boring bars and these boring bars are used in a plurality of different appli-cations. In general, however, eacl~ boring bar includes an elongated body having one end adapted to be positioned within and held by a tool holder or chuck of a rotary drive machine.
Thus, upon rotation of the machine, the boring bar body is rotatably driven around its axis.
A cutting tool or tool insert in turn is attached to the opposite end of the body of the boring bar. The cutting tool extends genelally radially from the axis of the boring bar body and has a cutting edge which performs the cutting operation on the work during a boring operation. In addition, there have been a number of previousl known boring bars in which the radial position of the tool with respect to the longituainal àxis of the boring bar is adjustable which correspondingly varies the diameter of the hole which is bored. These previously known boring bars, however, all suffer from a number of common dis-advantages.
One disadvalitage of these previously known boring bars is that the cutt ng tool or tool insert must be specially fabricated for the particular boring bar. ~hus J a boring bar constructed by one manufacturer will only accept cutting tools or tool inserts purchased from one, and usually the same, man~-facturer. Moreover, these cutting tools and t~ol inserts are ' ..,~
., ~ .
1 166~33 very expensive and the expense of the cutting tools and inSertS
is further aggrevated since the required tool or insert is available only from a single source.
A still ~urther disadva~tage of these previously kno~n boring bars is that the mechanisms for adjusting the radial position of the cutting tool have not been wholly satisfactory in use'. One problem with these previously known adjustable boring bars is that the cutting tool can be only' accurately adjusted to within a thousandth of an inch, more or less, of thè desired diameter to be bored. In many high preci-sion boring operations, however, a boring accuracy to within a ten thousandth of an inch, more or less, is requirea. In order to'obtain such high precisi~n, special boring bars must be then used. _ -A still'further disadvantage of these previously known boring bars is that the range of diameters which a single ' boring bar can cut is very limited, oftentimes to within a fraction of an inch. Thus, in order to be able to bore holes of different diameters over a relatively wide range, for example, several inches, it has been heretofore necessary for machine shops ana the like to maintain a pluràlity of different boring bars in stock wherein each boring bar is capable of cutting `
.. . , . -a different diameter range. miS solution, however, is undesir-able in view of the high cost of both the`boring bar and their ~' .. . . .
cutting tools or tool inserts.
Summary of the Present Invention ~ he present invention overcomes all of the above mentioned disadvantages of the previously known boring bars by providing an improved boring bar capable of accepting a standard square cutting tool and in which the radial position of the cutting tool with respect to the axis of the boring bar is . .
accurately adjustable over a wide range. ' '-.
1166~33 In brief, the invention provides a boring bar compris-ing: an elongated body having a transverse throughbore at one end, a slide member axially slidably positioned within said throughbore, said slide member having a s~uare bore formed axially through it, said square bore being dimensioned to slidably receive a standard square cutting tool therein, means for securing a standard square cutting tool to said slide member at an adjusted axial position, means for axially adjustable positioning said slide member in said body throughbore, wherein said slide member includes an externally threaded portion at one end and wherein said axial adjustment means further comprises an internally threaded annular dial which threadably engages the slide member threaded portion, and means for locking said dial within said body throughbore against axial movement, and wherein said dial includes an annular groove formed about its outer periphery which registers with a groove in the body thus forming an annular channel therebetween and wherein said locking means further comprises a plurality of ball bearings positioned within said channel.
In order to obtain fine adjustment of the radial position of the cutting tool, a cam is preferably rotatably mounted within the body of the boring bar and has a surface which frictionally engages a flat formed on the slide member.
Rotation of the cam with the resulting frictional engagement between the cam and the slide member causes a slight extension or retraction of the slide member, typically in the range of a few ten thousandth of an inch. The direction of rotation of the cam controls whether the cutting tools is slightly extended or slightly retracted.
ll66~33 Brief Descri tion of the Draw ng __~ P
A better understanding of the present invention will be had upon reference to the following description when read in conjunction with the accompanying drawi`ng, wherein like reference characters refer to like parts througl~out the several views, and in which: -FIG. 1 is a side view illustrating a prèferredembodiment of the boring bar of the present invention;
` FIG~ 2 is a fra~mentary sectional view of a portion thereof; and FIG. 3 is a sectional view taken substantially along line 3-3 in FIG. 2.
Detailed Description of a Preferred Embodiment of the Present Invention With reference first to FIG. 1, a preferred embodi-ment of the boring bar of the present invention is thereshown and includes an elongated body 10 having one end 12 adapted to be received within a tool holder or chuck of a rotary drive mechanism (not shown) which, upon activation, rotatably drives the boring bar about its longitudinal axis. A cutting tool assembly 14 is mounted in a manner to be subsequently described in greater detail in the opposite end 16 of the body 10 of the boring bar. Moxeover, it is the cutting tool assembly 14 and its mounting to the boring bar which forms the novelty of the instant invention while the remainaer of the body 10 of the boring bar may take any conventional form.
With reference now to FIGS. 2 and 3, the cutting tool assembly 14 is thereshown in greater detall and includes a transverse bore 18 which is formed through the end 16 of the boring bar body 10. A generally cylindrical slide member 20 is axially slidably positioned within this bore. The slide member 20 further includes an axial throughbore 22 having a square cross sectional shape as is best shown in FIG. 3.
_4_ ll~6~33 The 5quare throughbore 22 is dimensioned to slidably receive a standard square cutting tool 24 therein. As lS well known in the art, the square cutting tool 24 has a cutting edge 26 and is available in a number of standard sizes and types.
Such cutting tools 24 can be readily obtained at lo~ cost.
Still referring to FIGS. 2 and 3, at least one and preferably two set screws 28 threadahly engage transverse bores 30 in the slide member 20. These transvèrse bores 30 are open;
to the square bore 22 and, upon tightening, lock Llle cutting tool 24 to the slide member 20. Thus, the cutting tool 24 can .
be adjusted to any longitudinal position, and in doin~ so, vary the radial distance between the cutting edge 26 and the axis of the boring bar. When adjusted to the desired position, the tool 24 is locked in place by tightçning the sèt s rews 2B.
This adjustment, while not precision, nevertheless provides a great range of cutting diameters for the boring bar since the standard cutting too~s 24 are readily available in long lengths, for example, more than five inches.
Still referring to FIGS. 2 and 3, the sllde member includes an externally threaded portion 32 at its inner end while the boring bar throughbore 18 includes an elarged portion 34 at its inner end thus forming an annular abutment surface 36. An annular dial 38 is internally threaded at 40 and thread-ably engages the threaded portion 32 on the sliae member 20.
The annular dial 38, in addition, has an outside ~iameter substan-tially the same as the enlarged diameter portion 34 of the throughbore 18 so that the dial member 38 can be positioned within the enlarged diameter portion 34 and against the a~utment surface 36.
The annular dial 3~ further includes an annular V-shapea groove 46 about its outer periphery which registers with a V-shaped groove 48 in the boring bar bo~y 10. A plurality ; . .
.
~ 1~6~33 of ball ~earings 50, ~r~era~y of two different ~sizes, are then positioned within this channel 48 and lock the dial 38 against axial movement. Preferably, the bearings are positioned within the channel 48 through a hole 49 (FIG. l) in a boring bar body lO and this hole is subsequently closed by a suitable plug.
The slidab1~ adjustment of the cutting tool 24 with respect to the slide member 20 provides a rough adjustment of the radial distance between the axis of the boring bar and the cutting edge 26. Thereafter,~the rotation of th~ dial 38 radially displaces the slide member 20 with its attached cutting tool 24 in dependence upon tlle direction of rotation of the dial 38.
The dial 38 is capable of positioning the cutting edge 26 to the desired position within a thousandth of an inch or so.
Referring still to FIGS. 2 and 3, the present inven-tion further provides a fine adjustment means 60 capable of accurately positioning the cutting edge 26 to within a ten thousandth of an inch or so of its desired position. The fine adjustment means 60 comprises a flat 62 which is formed on one side of the slide member 20. A cam 64 is rotatably mounted within a bore 66 in the boring bar ~ody lO and has a cam surface 68 which faces the flat 62 on the slide member 20. The cam surface 68 is generally elliptical in shape on its side facing the slide member flat 62. Thus, when the minor axis of the cam surface 68 is aligned with the flat 62 as shown in FIG. 3, the cam surface 68 is 51ightly spaced from the flat 62 thus permitting free axial movement of the slide member 20 as the dial 38 is rotated. Conversely, as the cam 64 is turned in either a clockwise or counterclockwise direction, the cam surface 68 frictionally engages the flat 62.
As the cam 64 is rotated in a clockwise direction, as viewed in FIG. 2, the cam surface 68 frictionally engages the flat 62 and slightly compresses the slide member 20 and/or ~166433 dial 38 inwardly thus slightly retracting the cuttin~ edge 26.
Conversely, rotation of the cam 64 in a counterclockwise direction urges the slide member 20 and dial 38 slightly radially outwardly thus increasing tl-e radial position of the cutting edge 28 fron~
the axis of the boring bar. The precise extension or retraction of the cutting edge 26 which can be effected by the càm 64 is dependent upon the âmount of rotation of the cam 64 and the resulting increase of frictional engagement between the cam .
surface 6~ and the slide member flat 62.
Referring now to FIGS. 1 and 3, after the desired position of the cutting tool has been obtained, a set screw 70 in the body of the boring bar is tightened against the slide member 20 and loc~s the cuttin~ tool in its adjusted position.
- ~rom the foregoing, it can be seen that the boring bar of the present invention is greatly advantageous in a number of different respects. Perhaps most importantly, the boring bar of-the present invention uses standard square cutting tools 24 which are reaaily available at low cost. Consequently, the previously known necessity to purchase special cutting tools or cutting inserts for the boring bar is rendered unnecessary.
A still fùrther advantage of the boring bar of the present invention is the wide range of diameters ~hich can be cut by the boring bar. This wide range is due primarily to the ability to axially slide the standard cutting tool 24 to the :- - ' ' .
desired position with respect to the slide member 20 and then `
lock the cutting tool 24 to the slide member 20 by the set screws Such cutting tools 24 are available in relatively long lengths, for example, five inches.
A still further advantage of tlle l~oring bar of the present invention is that tlle radial distance of the cutting edge 26 and the axis of the boring bar can be easily and . ~ .
1~66~33 accurately adjusted, initially by the dial 38 and subsequently, by the cam 64 when high precision cutting is necessary.
Having described our invention, however, many modifications thereto will become apparent to those skilled in the art to which it pertains without deviation from the spirit of the invention as defined by the scope of the appended claims.
We claim : ` .
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A boring bar comprising:
an elongated body having a transverse throughbore at one end, a slide member axially slidably positioned within said throughbore, said slide member having a square bore formed axially through it, said square bore being dimensioned to slidably receive a standard square cutting tool therein, means for securing a standard square cutting tool to said slide member at an adjusted axial position, means for axially adjustable positioning said slide member in said body throughbore, wherein said slide member includes an externally threaded portion at one end and wherein said axial adjustment means further comprises an internally threaded annular dial which threadably engages the slide member threaded portion, and means for locking said dial within said body throughbore against axial movement, and wherein said dial includes an annular groove formed about its outer periphery which registers with a groove in the body thus forming an annular channel therebetween and wherein said locking means further comprises a plurality of ball bearings positioned within said channel.
an elongated body having a transverse throughbore at one end, a slide member axially slidably positioned within said throughbore, said slide member having a square bore formed axially through it, said square bore being dimensioned to slidably receive a standard square cutting tool therein, means for securing a standard square cutting tool to said slide member at an adjusted axial position, means for axially adjustable positioning said slide member in said body throughbore, wherein said slide member includes an externally threaded portion at one end and wherein said axial adjustment means further comprises an internally threaded annular dial which threadably engages the slide member threaded portion, and means for locking said dial within said body throughbore against axial movement, and wherein said dial includes an annular groove formed about its outer periphery which registers with a groove in the body thus forming an annular channel therebetween and wherein said locking means further comprises a plurality of ball bearings positioned within said channel.
2. The invention as defined in claim 1 wherein said bearings are of two different sizes.
3. The invention as defined in claim 1 wherein said securing means further comprises a pair of threaded members threadably mounted in transverse throughbores in said slide member.
4. The invention as defined in claim 1 and further comprising second means for locking said slide member to said body at an adjusted position.
5. The invention as defined in claim 4 wherein said second locking means comprises a threaded member threadably mounted in a locking bore in said body, said locking bore trans-versely intersecting said body throughbore.
6. The invention as defined in claim 1 and further comprising second means for axially adjusting thee position of the slide member in the body throughbore, said second adjusting means comprising a cam rotatably mounted in said body and having a cam surface which frictionally engages said slide member.
7. The invention as defined in claim 6 wherein said slide member is cylindrical in shape and has a flat formed along one side and wherein said cam surface frictionally engages said flat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20054180A | 1980-10-24 | 1980-10-24 | |
| US200,541 | 1980-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1166433A true CA1166433A (en) | 1984-05-01 |
Family
ID=22742142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000383211A Expired CA1166433A (en) | 1980-10-24 | 1981-08-05 | Boring bar |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1166433A (en) |
-
1981
- 1981-08-05 CA CA000383211A patent/CA1166433A/en not_active Expired
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|---|---|---|---|
| MKEX | Expiry |