CA2307810A1 - Device and method for obtaining aligned channels in spaced apart components - Google Patents
Device and method for obtaining aligned channels in spaced apart components Download PDFInfo
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- CA2307810A1 CA2307810A1 CA 2307810 CA2307810A CA2307810A1 CA 2307810 A1 CA2307810 A1 CA 2307810A1 CA 2307810 CA2307810 CA 2307810 CA 2307810 A CA2307810 A CA 2307810A CA 2307810 A1 CA2307810 A1 CA 2307810A1
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- guiding
- shaft
- sleeve
- channel
- guiding shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/02—Camshafts
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- Mechanical Engineering (AREA)
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Abstract
A method and a device for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components such as bushings part of a brake system and used for rotatably supporting a camshaft. The method includes the steps of using the first initial component channel as a reaming guide for reaming the second initial component channel having the second initial diameter until it becomes the second final component channel and, once the second final component channel has been reamed, using the second final component channel as a reaming guide for reaming the first initial component channel having the first initial diameter into the first final component so that the first and second final component channels are in alignment relative to each other. The device includes a boring head mounted on a coupling shaft. A guiding sleeve defining an inner sleeve channel and a generally frustro-conical sleeve outer surface is also provided. A guiding shaft is is provided so as to be at least partially substantially fittingly and slidably insertable within the sleeve channel with the sleeve channel longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis. The guiding shaft has a releasable coupling mechanism for allowing releasable coupling of the guiding shaft selectively to either one of the coupling shaft first and second longitudinal ends. The guiding sleeve is configured so as to guide the orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about the guiding shaft longitudinal axis.
Description
Patent Application of Claude Drouin for a Device and Method for Obtaining Aligned Channels in Spaced Apart Components 1 o Field of the Invention:
The present invention relates to the general field of alignment and is particularly concerned with a device_and a method for obtaining aligned channels in spaced apart components.
Background of the Invention:
There exists a variety of situations wherein it is desirable to use a shaft rotatably or slidably mounted within at least two spaced apart shaft supporting components. One example of such situations exists in the field of air brake systems for relatively large vehicles wherein a 2o so called "S"-type camshaft rotatably mounted within a pair of corresponding bushings components is used for activating brake pads. The bushing components in such a context are typically mounted on supporting legs attached to the vehicle axle sleeve.
Some of the brake system components including the camshaft and bushing components are subject to relatively important mechanical stress during use and must therefore be periodically serviced and replaced. Heretofore, replacement of these brake components involved replacement of the shaft with a new shaft and of the bushings components with pre-bored bushings. Because of the relatively poor alignment of the bushing components once mounted on their respective supporting legs, in order to allow for eventual slidable insertion of the camshaft within the replaced bushings components and to prevent seizing thereof, it was necessary to use bushing components having relatively large bushing channels extending therethrough.
to These relatively large bushing channels create a large and often non-symmetrical peripheral clearance between the outer surface of the camshaft and the inner surface of the bushing channel. This relatively important clearance, in turn, reduces the contact surface between the components creating a variety of drawbacks including decreased braking performance 1s and durability. It is thus an object of the present invention to provide an improved method and device for obtaining aligned channels in spaced apart components such as spaced apart bushing components used for supporting a camshaft part of a braking system.
Advantages of the present invention include that the proposed method and device allows an 2o intended user to obtain aligned channels that are custom fit for a given situation, for example a given shaft. The proposed method allows the channels to be readily obtain through a set of quick, easy and ergonomical steps without requiring special tooling or manual dexterity.
The present invention relates to the general field of alignment and is particularly concerned with a device_and a method for obtaining aligned channels in spaced apart components.
Background of the Invention:
There exists a variety of situations wherein it is desirable to use a shaft rotatably or slidably mounted within at least two spaced apart shaft supporting components. One example of such situations exists in the field of air brake systems for relatively large vehicles wherein a 2o so called "S"-type camshaft rotatably mounted within a pair of corresponding bushings components is used for activating brake pads. The bushing components in such a context are typically mounted on supporting legs attached to the vehicle axle sleeve.
Some of the brake system components including the camshaft and bushing components are subject to relatively important mechanical stress during use and must therefore be periodically serviced and replaced. Heretofore, replacement of these brake components involved replacement of the shaft with a new shaft and of the bushings components with pre-bored bushings. Because of the relatively poor alignment of the bushing components once mounted on their respective supporting legs, in order to allow for eventual slidable insertion of the camshaft within the replaced bushings components and to prevent seizing thereof, it was necessary to use bushing components having relatively large bushing channels extending therethrough.
to These relatively large bushing channels create a large and often non-symmetrical peripheral clearance between the outer surface of the camshaft and the inner surface of the bushing channel. This relatively important clearance, in turn, reduces the contact surface between the components creating a variety of drawbacks including decreased braking performance 1s and durability. It is thus an object of the present invention to provide an improved method and device for obtaining aligned channels in spaced apart components such as spaced apart bushing components used for supporting a camshaft part of a braking system.
Advantages of the present invention include that the proposed method and device allows an 2o intended user to obtain aligned channels that are custom fit for a given situation, for example a given shaft. The proposed method allows the channels to be readily obtain through a set of quick, easy and ergonomical steps without requiring special tooling or manual dexterity.
Furthermore, the proposed method allows for in situ forming of the channels even in thigh spaces thus reducing the need for costly manipulation and transportation.
The proposed device is specifically design so as to be manufacturable using conventional forms of manufacturing so as to provide a device that will be economical, long lasting and generally trouble free in operation. Special features are provided for ensuring ergonomical use thereof and accuracy during the channel forming process.
When the proposed device and method are used in the field of brake components to overhauling, the obtained aligned and customised channels extending through the bushing components increases the contact surface between the sha8 and bushing channels and reduces the looseness of the shaft and bushing assembly. This, in turn, provides reduce friction and wear, increased seal and braking performance and improved component durability. It is estimated that the proposed method and device may reduce side play t 5 between the shaft and bushing channels from the typical 0.020 inch up to 0.005 inch.
In accordance with the present invention there is provided a method for aligning a first final 2o component channel and a second final component channel respectively extending through spaced apart first and second components, the first and second final component channels having corresponding first and second predetermined final internal diameters, the first and second components being initially provided with corresponding first and second initial component channels extending therethrough, the first and second initial component channels defining corresponding first and second initial internal diameters, the first and second components being initially positioned so that the first and second initial component channels are in a generally aligned relationship relative to each other, the method comprising the steps of: a) selecting the first and second components so that the first initial internal diameter is smaller then the first predetermined final internal diameter and the second initial internal diameter is smaller then the second predetermined final internal diameter; b) using the first initial component channel as a reaming guide for reaming the second initial component channel having the second initial diameter until it 1o becomes the second final component channel having the second final internal diameter;
c) once the second final component channel has been reamed, using the second final component channel as a reaming guide for reaming the first initial component channel having the first initial diameter into the first final component channel having the first final diameter so that the first and second final component channels in alignment relative to each other; whereby using the first initial component channel as a reaming guide for forming the second final component channel and then the newly formed second final component channel as a reaming guide for forming the first final component channel ensures that the first and second final component channels are aligned relative to each other.
There is also provided a method for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components more specifically through the use of a device including a boring head, the boring head being mounted on a coupling shaft defining a pair of opposed coupling shaft first and second longitudinal ends; a guiding sleeve, the guiding sleeve defining an inner sleeve channel and a generally frustro-conical sleeve outer surface, the inner sleeve channel defining a sleeve channel longitudinal axis; a generally elongated guiding shaft defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis, the guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling of the guiding shaft selectively to either one of the coupling shaft first and second longitudinal ends, the guiding shaft being configured and sized so as to be at least partially substantially to fittingly and slidably insertable within the sleeve channel with the sleeve channel longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis; the guiding sleeve being configured so as to guide the orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about the guiding shaft longitudinal axis , wherein the steps of using the first initial component channel as a reaming guide for reaming the second initial component channel until it becomes the second final component channel and using the second final component channel as a reaming guide for reaming the first initial component channel into the first final component channel respectively involve the steps of: a) positioning the guiding sleeve substantially concentrically within the first initial component channel;
2o b) with the guiding shaft first longitudinal end attached to the coupling shaft first longitudinal end, slidingly inserting the guiding shaft through the second initial component channel until the guiding shaft second longitudinal end is at least partially inserted within the sleeve channel; c) driving the boring head attached to the guiding shaft by the coupling shaft through the second initial component channel while the guiding shaft is guided by the guiding sleeve until the boring head produces the second final component channel;
d) with the guiding shaft first longitudinal end attached to the coupling shaft second longitudinal end, slidingly inserting the boring head and the guiding shaft attached thereto through second final component channel until the boring head reaches first initial component channel with the guiding shaft at least partially inserted within the through second final component channel ; e) positioning the guiding sleeve substantially concentrically within the second final component channel by sliding it onto the guiding 1o shaft and at least partially into the second final component channel; f) driving the boring head through the first initial component channel while the guiding shaft is guided by the guiding sleeve until the boring head produces the first final component channel.
The present invention also relates to a device for aligning about an alignment axis a first t 5 final component channel and a second final component channel respectively extending through spaced apart first and second components, the first and second final component channels having corresponding first and second predetermined final internal diameters, the first and second components being initially provided with corresponding first and second initial component channels extending therethrough, the first and second initial 2o component channels defining corresponding first and second initial internal diameters, the first and second components being initially positioned so that the first and second initial component channels are in a generally aligned relationship relative to each other, the device comprising:
a) a boring means for boring the first and second final component channels and b) a guiding means for guiding the boring means along the alignment axis.
Preferably, the boring means includes a boring head defining a generally cylindrical head s base, the head base defining a head base first longitudinal end, a longitudinally opposed head base second longitudinal end and a head base cylindrical wall, the head base cylindrical wall defining a head base channel extending longitudinally therethrough and a head base longitudinal axis; a set of boring blades extends generally radially from the outer surface of the head base cylindrical wall.
to Conveniently, each one of the boring blades defines a tapered blade initiating section positioned adjacent the head base first longitudinal end, each blade initiating section tapering from the blade outer peripheral-cutting edge towards the head base cylindrical wall in a direction leading towards the head base first longitudinal end; each blade initiating t 5 section forming a first angle having a value substantially in the range of 1.5 degrees with the outer surface of the cylindrical wall; each blade initiating section extending over a distance having a value substantially in the range of 1.6 centimetres; each boring blade being longitudinally angled relative to the radius of the cylindrical head base by a second angle having a value substantially in the range of 0.1 degrees. Also, preferably, the boring means 2o includes a releasable coupling means for releasably coupling the boring head to the guiding means and to a torque generating means.
Preferably, the coupling means includes a coupling shaft defining a coupling shaft first longitudinal end, a coupling shaft second longitudinal end and a coupling shaft longitudinal axis; the coupling shaft first and second longitudinal ends being both provided with corresponding coupling shaft first and second threaded segments for allowing releasable threaded coupling to the guiding means at both longitudinal ends of the coupling shaft; the coupling shaft being configured and sized so as to be at least partially substantially fittingly and slidably insertable into the head base channel with the boring head positioned between the coupling shaft first and second threaded segments.
to Conveniently, the coupling means includes a releasable locking means for releasably locking together the boring head and the coupling shaft against relative rotational movement and bi-directional axial translation therebetween so as to ensure that the boring head rotates solidarly with the coupling shaft and also for ensuring that the boring head is only allowed to translate axially relative to the coupling shaft in one predetermined axial direction.
Preferably, the releasable locking means includes at least one locking protrusion protruding substantially outwardly and radially from the outer surface of the coupling shaft and a corresponding locking groove formed in the head base cylindrical wall. The coupling shaft is conveniently provided with a grasp facilitating means for facilitating the grasping of the 2o coupling shaft.
Conveniently, the grasp facilitating means includes an hexagonal grasping protrusion extending outwardly from the outer surface of the coupling shaft; the grasping protrusion s being positioned intermediate the protruding section and the coupling shaft second threaded segment; the grasping protrusion also defining an abutment edge adapted to abuttingly contact the longitudinal edge of the head second longitudinal end so as to serve as an additional locking means for limiting the relative axial translational movement between the boring head and the coupling shaft in a predetermined direction.
Preferably, the guiding means includes a guiding sleeve and a guiding shaft, the guiding sleeve having a generally cylindrical sleeve wall defining a sleeve first longitudinal end, a sleeve second longitudinal end and a sleeve longitudinal axis; the sleeve wall also defining 1o an inner sleeve channel having a substantially disc-shaped cross-sectional configuration and a generally fiwstro-conical sleeve outer surface; the sleeve outer surface tapering conically in a direction leading towards the sleeve first longitudinal end.
Conveniently, the guiding shaft has a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; the guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of the coupling means; the guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing the guiding shaft to be substantially 2o fittingly and slidably inserted within the inner sleeve channel; the guiding shaft being configured and sized so as to be inserted within the inner sleeve channel with the sleeve longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis longitudinal axis; whereby, the guiding sleeve is adapted to guide the general orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation movement between the guiding sleeve and the guiding shaft.
s Preferably, the guiding shaft is provided with a guiding shaft-to-torque generating means releasable coupling means for releasably coupling the coupling shaft and any components attached thereto to a suitable torque generating means. The guiding shaft-to-torque generating means coupling means conveniently includes a generally hexagonal guiding shaft grasping protrusion extending axially and outwardly from the guiding shaft second l o longitudinal end.
Conveniently the guiding means includes a guiding sleeve and a guiding shaft, the guiding sleeve having a generally cylindrical sleeve wall defining a sleeve first longitudinal end, a sleeve second longitudinal end and a sleeve longitudinal axis; the sleeve wall also defining t5 an inner sleeve channel having a substantially disc-shaped cross-sectional configuration and a generally fiustro-conical sleeve outer surface; the sleeve outer surface tapering comically in a direction leading towards the sleeve first longitudinal end; the guiding shaft having a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; the guiding shaft having 2o a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of the coupling means; the guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing the guiding shaft to be substantially fittingly and slidably inserted within the inner to sleeve channel; the guiding shaft being configured and sized so as to be inserted within the inner sleeve channel with the sleeve longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis longitudinal axis; whereby, the guiding sleeve is adapted to guide the general orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation movement between the guiding sleeve and the guiding shaft; the guiding-to-coupling shaft releasable coupling means including an internally threaded recess formed in the guiding shaft first longitudinal end for selective threadable coupling to both the coupling shaft first and second threaded segments.
to Brief Description of the Drawing:
An embodiment of the present invention will now be disclosed, by way of example, in reference to the following drawings in which:
Figure 1: in a perspective view with sections taken-out illustrates a pair of bushing 2o components rotatably supporting a camshaft part of a conventional air brake system, the bushing components are shown in full lines while a section of the air brake system is shown in phantom lines, the bushings part of the air brake system exemplify one possible application of the present invention;
Figure 2: in a perspective view illustrates the camshaft shown in Figure 1 with bushings shown in phantom lines mounted thereon;
Figure 3: in a partial elevational view with sections taken-out illustrates a device in accordance with an embodiment of the present invention for creating aligned first and second final component channels in corresponding first and second components;
Figure 4: in a partial exploded elevational view with sections taken-out illustrates a device in t 0 accordance with an embodiment of the present invention for creating aligned first and second final component channels in corresponding first and second components;
Figure 5: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a first step of a method also part of the present invention, the device is shown as it begins a boring process performed on a first component;
Figure 6: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a second step of a method also part of the present invention, the device is shown as it performs a boring process performed on a first 2o component;
Figure 7: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a third step of a method also part of the present invention, the device is shown as it begins a boring process performed on a second component;
Figure 8: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a fourth step of a method also part of the present invention, the device is shown as it performs a boring process performed on a second component;
Figure 9: in a partial elevational view with sections taken-out illustrates a shaft extending 1o through unaligned channels formed in a pair of unaligned bushing components;
Figure 10: in a partial elevational view with sections taken-out illustrates a shaft extending through aligned channels formed in a pair of unaligned bushing components;
t 5 Figure 11: in a partial elevational view with sections taken-out illustrates a shaft extending through aligned channels formed in a pair of aligned bushing components;
Figure 12: in a transversal cross-sectional view taken along arrows XII-XII of Figure 9 illustrates the spatial relationship between the shaft and one of the bushing components;
Figure 13: in a transversal cross-sectional view taken along arrows XII-XII of Figure 10 illustrates the spatial relationship between the shaft and one of the bushing components;
Figure 14: in a transversal cross-sectional view taken along arrows XN-XIV of Figure 11 illustrates the spatial relationship between the shaft and one of the bushing components.
Detailed description:
Refernng to figures 5 through 8, there is shown, in elevational views with sections taken-off, a device 10 in accordance with an embodiment of the present invention being used for creating aligned first and second final bushing channels 12, 14 in corresponding first and 1 o second bushing components 16, 18. The first and second final bushing channels 12, 14 are shown aligned about a common alignment axis 20 extending longitudinally therethrough.
The device 10 includes a boring means 22 for boring the first and second final bushing channels 12, 14 and a guiding means 24 for guiding said boring means along the alignment axes Referring now more specifically to Figure 4, there is shown in greater details some of the components of then device 10. The boring means 22 includes a boring head 26 defining a generally cylindrical head base 28. The head base 28, in turn, defines a head base first longitudinal end 30, a longitudinally opposed head base second longitudinal end 32, a head 2o base cylindrical wall 34 defining a head base channel 36 extending longitudinally therethrough and a head base longitudinal channel 38.
A set of boring blades 40 extends generally radially from the outer surface of the head base cylindrical wall 34. The boring blades 40 preferably extend from a position located substantially adjacent the head base first longitudinal end 30 to a head base connecting section 42 located adjacent the head base second longitudinal end 32.
s Each one of the boring blades 40 defines a tapered blade initiating section 44 positioned adjacent the head base first longitudinal end 30. Each blade initiating section 44 tapers from the blade outer peripheral cutting edge towards the head base cylindrical wall 34 in a direction leading towards the head base first longitudinal end 30.
to Each blade initiating section 44 preferably forms an angle A having a value substantially in the range of 1.5 degrees with the outer surface of the cylindrical wall 34.
Also, preferably, each blade initiating section 44 preferably extends over a distance D having a value substantially in the range of 1.6 centimetres.
Furthermore, each boring blade 40 is preferably longitudinally angled relative to the radius of the cylindrical head base 28 by an angle B having a value substantially in the range of 0.1 degrees. In cross-section, each boring blade 40 defines a generally parallelepiped-shaped configuration.
The boring means 22 also includes a releasable coupling means 46 for releasably coupling the boring head 26 to the guiding means 24 and to a torque generating means (not shown).
The coupling means 46 preferably includes a coupling shaft 48 defining a coupling shaft first longitudinal end 50, a coupling shaft second longitudinal end 52 and a coupling shaft longitudinal axis 54.
The coupling shaft first and second longitudinal ends 50, 52 are preferably both provided with corresponding coupling shaft first and second threaded segments 62, 64 for allowing releasable threaded coupling to the guiding means 24 at both longitudinal ends of the coupling shaft 48 for reasons which will be hereinafter disclosed.
The coupling shaft 48 is configured and sized so as to be at least partially substantially to fittingly and slidably inserted into said head base channel 36, preferably with the boring head 26 positioned between the coupling shaft first and second threaded segments 62, 64.
The coupling means 46 also preferably includes a releasable locking means for releasably locking together the boring head 26 and the coupling shaft 48 against relative rotational movement and bi-directional axial translation therebetween. In other words, the releasable locking means is provided for ensuring that the boring head 26 rotates solidarly with the coupling shaft 48 and also for ensuring that the boring head 26 is only allowed to translate axially relative to the coupling shaft 48 in one axial direction. Preferably, the releasable locking means is adapted to releasably lock together the boring head 26 and the coupling 2o shaft 48 with the coupling shaft 48 at least partially inserted into the head base channel 36.
The releasable locking means preferably includes at least one and preferably two locking protrusions protruding substantially outwardly and radially from the outer surface of the coupling shaft 48 and a corresponding locking groove 58 formed at the head base connecting section 42 in the head base cylindrical wall 34. In the preferred embodiment, a pair of locking protrusions are formed by a locking pin 56 protruding radially from a locking pin channel 60 extending transversally through the coupling shaft 48.
The coupling shaft 48 is preferably further provided with a grasp facilitating means for facilitating the grasping of the coupling shaft 48. 'The grasp facilitating means typically takes the form of an hexagonal grasping protrusion 66 extending outwardly from the outer surface of the coupling shaft 48 and preferably positioned intermediate the protruding sections of 1o the locking pin 56 and the coupling shaft second threaded segment 64. The grasping protrusion 66 also defines an abutment edge 68 adapted to abuttingly contact the longitudinal edge 70 of the head second longitudinal end 32 so as to optionally serve as an additional locking means for limiting the relative axial translational movement between the boring head 26 and the coupling shaft 48 in a predetermined direction.
The guiding means 24 includes a guiding sleeve 72 and a guiding shaft 74. The guiding sleeve 72 has a generally cylindrical sleeve wall 76 defining a sleeve first longitudinal end 82, a sleeve second longitudinal end 84 and a sleeve longitudinal axis 86. The sleeve wall 76 also defines an inner sleeve channel 78 having a substantially disc-shaped cross-sectional 2o configuration and a preferably generally frustro-conical sleeve outer surface 80.
The outer surface 80 of the guiding sleeve 72 thus preferably tapers conically in a direction leading towards the sleeve first longitudinal end 82. Optionally, the sleeve outer surface 80 i7 fizrther defines a sleeve grasping segment 88 positioned adjacent the sleeve second longitudinal end 84 and having a generally annular configuration.
The guiding shaft 74 has a generally elongated configuration defining a guiding shaft first longitudinal end 90, a guiding shaft second longitudinal end 92 and a guiding shaft longitudinal axis 94. The guiding shaft 74 has a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to either one of the coupling shaft first or second longitudinal ends 50, 52. Preferably, the guiding-to-coupling shaft releasable coupling means includes an internally threaded recess 96 formed in the guiding shaft first longitudinal end 90 for selective threadable coupling to both the coupling shaft first and second threaded segments 62, 64.
The guiding shaft 74 is also provided with a guiding shaft-to-torque generating means releasable coupling means for releasably coupling the coupling shaft and any components attached thereto to a suitable torque generating means (not shown) such as a drill-type power tool. The guiding shaft-to-torque generating means coupling means preferably includes a generally hexagonal guiding shaft grasping protrusion 98 extending axially and outwardly from the guiding shaft second longitudinal end 92.
2o The guiding shaft 74 has a generally cylindrical guiding shaft body 100 defining a guiding shaft outer surface 102 that is configured and sized for allowing the guiding shaft 74 to be substantially fittingly and slidably inserted within the inner sleeve channel 78. The guiding shaft 74 is configured and sized so as to be inserted within the inner sleeve channel 78 with the sleeve longitudinal axis 86 in a generally collinear relationship relative to the guiding shaft longitudinal axis longitudinal axis 94. The guiding sleeve 72 is thus adapted to guide the general orientation of the guiding shaft longitudinal axis 94 while allowing rotation of the guiding shaft 74 about its guiding shaft longitudinal axis longitudinal axis 94 and allowing relative translation movement between the guiding sleeve 72 and the guiding shaft 74.
Referring back to Figures 5 through 8, there is shown that the present invention also relates to a method for creating aligned first and second final component channels 12, 14 extending 1 o respectively through the corresponding spaced apart first and second components 16, 18.
The first and second final component channels 12, 14 being shown aligned about the common alignment axis 20 extending longitudinally therethrough.
The first and second final component channels 12 and 14 have corresponding first and second predetermined final internal diameters 108, 110 that are dependant on the external diameter of the boring head 26 which will be used. The first and second components 16, 18 are initially provided with corresponding first and second initial component channels 104, 106 extending longitudinally therethrough. The first and second initial component channels 104, 106 define corresponding first and second initial internal diameters 112, 114. The first and second components 16, 18 are initially positioned so that the first and second initial component channels 104, 106 are in a generally aligned relationship relative to each other.
The method in accordance with the present invention includes the steps of:
a) first, selecting the first and second components 16, 18 so that the first initial internal diameter 112 is smaller then the first predetermined final internal diameter 108 and the second initial internal diameter 114 is smaller then the second predetermined final s internal diameter 110;
b) then, as shown in Figures 5 and 6, using the first initial component channel 104 as a reaming guide for reaming the second initial component channel 106 having the second initial diameter 114 until it becomes the second final component channel 14 having the second predetermined final internal diameter 110;
to c) as shown in Figures 7 and 8, once the second final component channel 14 has been reamed, using the second final component channel 14 as a reaming guide for reaming the first initial component channel 104 having the first initial diameter 112 into the first final component channel 12 having the first predetermined final diameter 108 so that the first and second final component channels 12 and 14 are in alignment relative to each other.
is The method in accordance with the present invention can be readily performed using the device 10. More specifically, when the device 10, the following steps are involved:
a) as shown in Figure 5, positioning the guiding sleeve substantially concentrically within the first initial component channel 104;
2o b) with the guiding shaft first longitudinal end 90 attached to the coupling shaft first longitudinal end 50, slidingly inserting the guiding shaft 74 through the second initial component channel 106 until the guiding shaft second longitudinal end 92 is at least partially inserted within the sleeve channel 78;
c) as shown in Figure 6, driving the boring head 44 attached to the guiding shaft by the coupling shaft through the second initial component channel while the guiding shaft is guided by the guiding sleeve until the boring head produces the second final component channel;
d) as shown in Figure 7, with the guiding shaft first longitudinal end 90 attached to the coupling shaft second longitudinal end 52, slidingly inserting the boring head 44 and the guiding shaft 74 attached thereto through the newly formed second final component channel 14 towards the first initial component channel 104 until the boring head 44 reaches the first initial component channel 104 with the guiding shaft 74 still at least to partially inserted within the newly formed second final component channel 14;
e) positioning the guiding sleeve 72 substantially concentrically within the second final component channel 14 by sliding it onto the guiding shaft 74 and at least partially into the second final component channel 14;
f) as shown in figure 8, driving the boring head 44 through the first initial component channel 104 while the guiding shaft 74 is guided by the guiding sleeve 76 until the boring head 44 produces the first final component channel 16.
Figures 1 and 2 illustrate one example of a situation wherein it is desirable to create aligned first and second final bushing channels 12, 14 extending respectively through 2o corresponding spaced apart first and second bushing components 16, 18. In Figures 1 and 2, the bushing components 16, 18 are shown being used for rotatably supporting a camshaft 116 having a so-called "S"-type camshaft head 118. This type of arrangement is typically found in air brake systems for heavy vehicles such as trucks such as designated generally by the reference numeral 120. The bushing components 16, 18 are shown fixedly mounted on corresponding bushing supporting legs 122 extending radially from the outer peripheral surface of an axle sleeve 124. The "S"-type camshaft head 118 is typically used for activating the brake pads 126.
The conventional prior art method of overhauling such air brake systems involved replacing the camshaft 116 and its associated bushings 16, 18 with pre-bored bushings.
Since the supporting legs 122 and associated pre-bored bushings could potentially be poorly aligned, it was necessary to provide a relatively large clearance therebetween. This relatively large to clearance, in turn, caused the camshafts 116 to rotate loosely within the associated bushings.
The proposed method and device allow for in situ creation of the final bushing channels 12, 14. In other words, the final bushing channels 12, 14 are preferably formed once the bushing 16, 18 components are mounted on their respective supporting legs.
This reduces t 5 manipulation and transportation. It also ensures accurate alignment. As mentioned previously, the guiding-to-coupling shaft releasable coupling means allows for releasable coupling thereof to either one of the coupling shaft first or second longitudinal ends 50, 52.
This, in turn, allows for ergonomical operation of the device 10 even in crowded environments such as is often the case adjacent vehicle brake systems. Indeed, the guiding-2o to-coupling shaft releasable coupling means allows both bushing channels 12, 14 to be formed by manipulating the tool 10 in a single predominant axial direction.
Figures 9 through 14 illustrates various types of spatial relationship between shafts and bushings corresponding to dififerent alignment situations. Figures 9 and 12 illustrate a situation wherein a shaft 128 e:~ctends through una!i~Tned channels 130 formed in a pair of unaligned bushing components 132. As can be clearly seen in Figure 12, this creates an non-symmetrical clearmce 134 between the shaft 128 and the bushing component 132.
This type of situation could potentially lead to seizing of the sham 128 at its point of contact 136 with the bushing component: 132.
Figures 11 and 14 illus~;rate a situation wherein the bushing components 138 and associated channels 140 are perfi:ctly ali~~ed. The shaft 142 is thus symmetrically spaced by a clearance 144 symmetrically disposed therearound from the bushing component 1~(0. This hypothetical situation is. rarely attained in reality because of various constraints. Fi~;ures 10 and 13 illustrate a situation wherein although, as is often the case in real life situations, the bushing components 1416 are unaligned, their respective bushing channels 148 are aligned having been formed by the herein proposed method and device. As can be seen in Figure 13, even though the bashing components 146 are unaligned there nevertheless exists a symmetrical clearance 150 between the outer surface of the shaft 152 and the inner surface of the bushing channels 148.
2o It should be understood that the present invention including the device 10 and the hereinabove disclosed method is in no way limited to the field of bushing channels part of air brake systems and that both the method and device could be used for creating aligned channels or apertures ire other types of components and in various other contexts without departing from the scope of the present invention. Furthermore, numerous modifications, variations and adaptations could be made to the hereinabove disclosed invention without departing from the scope of the present invention as set forth in the following claims.
The proposed device is specifically design so as to be manufacturable using conventional forms of manufacturing so as to provide a device that will be economical, long lasting and generally trouble free in operation. Special features are provided for ensuring ergonomical use thereof and accuracy during the channel forming process.
When the proposed device and method are used in the field of brake components to overhauling, the obtained aligned and customised channels extending through the bushing components increases the contact surface between the sha8 and bushing channels and reduces the looseness of the shaft and bushing assembly. This, in turn, provides reduce friction and wear, increased seal and braking performance and improved component durability. It is estimated that the proposed method and device may reduce side play t 5 between the shaft and bushing channels from the typical 0.020 inch up to 0.005 inch.
In accordance with the present invention there is provided a method for aligning a first final 2o component channel and a second final component channel respectively extending through spaced apart first and second components, the first and second final component channels having corresponding first and second predetermined final internal diameters, the first and second components being initially provided with corresponding first and second initial component channels extending therethrough, the first and second initial component channels defining corresponding first and second initial internal diameters, the first and second components being initially positioned so that the first and second initial component channels are in a generally aligned relationship relative to each other, the method comprising the steps of: a) selecting the first and second components so that the first initial internal diameter is smaller then the first predetermined final internal diameter and the second initial internal diameter is smaller then the second predetermined final internal diameter; b) using the first initial component channel as a reaming guide for reaming the second initial component channel having the second initial diameter until it 1o becomes the second final component channel having the second final internal diameter;
c) once the second final component channel has been reamed, using the second final component channel as a reaming guide for reaming the first initial component channel having the first initial diameter into the first final component channel having the first final diameter so that the first and second final component channels in alignment relative to each other; whereby using the first initial component channel as a reaming guide for forming the second final component channel and then the newly formed second final component channel as a reaming guide for forming the first final component channel ensures that the first and second final component channels are aligned relative to each other.
There is also provided a method for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components more specifically through the use of a device including a boring head, the boring head being mounted on a coupling shaft defining a pair of opposed coupling shaft first and second longitudinal ends; a guiding sleeve, the guiding sleeve defining an inner sleeve channel and a generally frustro-conical sleeve outer surface, the inner sleeve channel defining a sleeve channel longitudinal axis; a generally elongated guiding shaft defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis, the guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling of the guiding shaft selectively to either one of the coupling shaft first and second longitudinal ends, the guiding shaft being configured and sized so as to be at least partially substantially to fittingly and slidably insertable within the sleeve channel with the sleeve channel longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis; the guiding sleeve being configured so as to guide the orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about the guiding shaft longitudinal axis , wherein the steps of using the first initial component channel as a reaming guide for reaming the second initial component channel until it becomes the second final component channel and using the second final component channel as a reaming guide for reaming the first initial component channel into the first final component channel respectively involve the steps of: a) positioning the guiding sleeve substantially concentrically within the first initial component channel;
2o b) with the guiding shaft first longitudinal end attached to the coupling shaft first longitudinal end, slidingly inserting the guiding shaft through the second initial component channel until the guiding shaft second longitudinal end is at least partially inserted within the sleeve channel; c) driving the boring head attached to the guiding shaft by the coupling shaft through the second initial component channel while the guiding shaft is guided by the guiding sleeve until the boring head produces the second final component channel;
d) with the guiding shaft first longitudinal end attached to the coupling shaft second longitudinal end, slidingly inserting the boring head and the guiding shaft attached thereto through second final component channel until the boring head reaches first initial component channel with the guiding shaft at least partially inserted within the through second final component channel ; e) positioning the guiding sleeve substantially concentrically within the second final component channel by sliding it onto the guiding 1o shaft and at least partially into the second final component channel; f) driving the boring head through the first initial component channel while the guiding shaft is guided by the guiding sleeve until the boring head produces the first final component channel.
The present invention also relates to a device for aligning about an alignment axis a first t 5 final component channel and a second final component channel respectively extending through spaced apart first and second components, the first and second final component channels having corresponding first and second predetermined final internal diameters, the first and second components being initially provided with corresponding first and second initial component channels extending therethrough, the first and second initial 2o component channels defining corresponding first and second initial internal diameters, the first and second components being initially positioned so that the first and second initial component channels are in a generally aligned relationship relative to each other, the device comprising:
a) a boring means for boring the first and second final component channels and b) a guiding means for guiding the boring means along the alignment axis.
Preferably, the boring means includes a boring head defining a generally cylindrical head s base, the head base defining a head base first longitudinal end, a longitudinally opposed head base second longitudinal end and a head base cylindrical wall, the head base cylindrical wall defining a head base channel extending longitudinally therethrough and a head base longitudinal axis; a set of boring blades extends generally radially from the outer surface of the head base cylindrical wall.
to Conveniently, each one of the boring blades defines a tapered blade initiating section positioned adjacent the head base first longitudinal end, each blade initiating section tapering from the blade outer peripheral-cutting edge towards the head base cylindrical wall in a direction leading towards the head base first longitudinal end; each blade initiating t 5 section forming a first angle having a value substantially in the range of 1.5 degrees with the outer surface of the cylindrical wall; each blade initiating section extending over a distance having a value substantially in the range of 1.6 centimetres; each boring blade being longitudinally angled relative to the radius of the cylindrical head base by a second angle having a value substantially in the range of 0.1 degrees. Also, preferably, the boring means 2o includes a releasable coupling means for releasably coupling the boring head to the guiding means and to a torque generating means.
Preferably, the coupling means includes a coupling shaft defining a coupling shaft first longitudinal end, a coupling shaft second longitudinal end and a coupling shaft longitudinal axis; the coupling shaft first and second longitudinal ends being both provided with corresponding coupling shaft first and second threaded segments for allowing releasable threaded coupling to the guiding means at both longitudinal ends of the coupling shaft; the coupling shaft being configured and sized so as to be at least partially substantially fittingly and slidably insertable into the head base channel with the boring head positioned between the coupling shaft first and second threaded segments.
to Conveniently, the coupling means includes a releasable locking means for releasably locking together the boring head and the coupling shaft against relative rotational movement and bi-directional axial translation therebetween so as to ensure that the boring head rotates solidarly with the coupling shaft and also for ensuring that the boring head is only allowed to translate axially relative to the coupling shaft in one predetermined axial direction.
Preferably, the releasable locking means includes at least one locking protrusion protruding substantially outwardly and radially from the outer surface of the coupling shaft and a corresponding locking groove formed in the head base cylindrical wall. The coupling shaft is conveniently provided with a grasp facilitating means for facilitating the grasping of the 2o coupling shaft.
Conveniently, the grasp facilitating means includes an hexagonal grasping protrusion extending outwardly from the outer surface of the coupling shaft; the grasping protrusion s being positioned intermediate the protruding section and the coupling shaft second threaded segment; the grasping protrusion also defining an abutment edge adapted to abuttingly contact the longitudinal edge of the head second longitudinal end so as to serve as an additional locking means for limiting the relative axial translational movement between the boring head and the coupling shaft in a predetermined direction.
Preferably, the guiding means includes a guiding sleeve and a guiding shaft, the guiding sleeve having a generally cylindrical sleeve wall defining a sleeve first longitudinal end, a sleeve second longitudinal end and a sleeve longitudinal axis; the sleeve wall also defining 1o an inner sleeve channel having a substantially disc-shaped cross-sectional configuration and a generally fiwstro-conical sleeve outer surface; the sleeve outer surface tapering conically in a direction leading towards the sleeve first longitudinal end.
Conveniently, the guiding shaft has a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; the guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of the coupling means; the guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing the guiding shaft to be substantially 2o fittingly and slidably inserted within the inner sleeve channel; the guiding shaft being configured and sized so as to be inserted within the inner sleeve channel with the sleeve longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis longitudinal axis; whereby, the guiding sleeve is adapted to guide the general orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation movement between the guiding sleeve and the guiding shaft.
s Preferably, the guiding shaft is provided with a guiding shaft-to-torque generating means releasable coupling means for releasably coupling the coupling shaft and any components attached thereto to a suitable torque generating means. The guiding shaft-to-torque generating means coupling means conveniently includes a generally hexagonal guiding shaft grasping protrusion extending axially and outwardly from the guiding shaft second l o longitudinal end.
Conveniently the guiding means includes a guiding sleeve and a guiding shaft, the guiding sleeve having a generally cylindrical sleeve wall defining a sleeve first longitudinal end, a sleeve second longitudinal end and a sleeve longitudinal axis; the sleeve wall also defining t5 an inner sleeve channel having a substantially disc-shaped cross-sectional configuration and a generally fiustro-conical sleeve outer surface; the sleeve outer surface tapering comically in a direction leading towards the sleeve first longitudinal end; the guiding shaft having a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; the guiding shaft having 2o a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of the coupling means; the guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing the guiding shaft to be substantially fittingly and slidably inserted within the inner to sleeve channel; the guiding shaft being configured and sized so as to be inserted within the inner sleeve channel with the sleeve longitudinal axis in a generally collinear relationship relative to the guiding shaft longitudinal axis longitudinal axis; whereby, the guiding sleeve is adapted to guide the general orientation of the guiding shaft longitudinal axis while allowing rotation of the guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation movement between the guiding sleeve and the guiding shaft; the guiding-to-coupling shaft releasable coupling means including an internally threaded recess formed in the guiding shaft first longitudinal end for selective threadable coupling to both the coupling shaft first and second threaded segments.
to Brief Description of the Drawing:
An embodiment of the present invention will now be disclosed, by way of example, in reference to the following drawings in which:
Figure 1: in a perspective view with sections taken-out illustrates a pair of bushing 2o components rotatably supporting a camshaft part of a conventional air brake system, the bushing components are shown in full lines while a section of the air brake system is shown in phantom lines, the bushings part of the air brake system exemplify one possible application of the present invention;
Figure 2: in a perspective view illustrates the camshaft shown in Figure 1 with bushings shown in phantom lines mounted thereon;
Figure 3: in a partial elevational view with sections taken-out illustrates a device in accordance with an embodiment of the present invention for creating aligned first and second final component channels in corresponding first and second components;
Figure 4: in a partial exploded elevational view with sections taken-out illustrates a device in t 0 accordance with an embodiment of the present invention for creating aligned first and second final component channels in corresponding first and second components;
Figure 5: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a first step of a method also part of the present invention, the device is shown as it begins a boring process performed on a first component;
Figure 6: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a second step of a method also part of the present invention, the device is shown as it performs a boring process performed on a first 2o component;
Figure 7: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a third step of a method also part of the present invention, the device is shown as it begins a boring process performed on a second component;
Figure 8: in a partial elevational view with sections taken-out illustrates the device shown in Figures 3 and 4 being used for performing a fourth step of a method also part of the present invention, the device is shown as it performs a boring process performed on a second component;
Figure 9: in a partial elevational view with sections taken-out illustrates a shaft extending 1o through unaligned channels formed in a pair of unaligned bushing components;
Figure 10: in a partial elevational view with sections taken-out illustrates a shaft extending through aligned channels formed in a pair of unaligned bushing components;
t 5 Figure 11: in a partial elevational view with sections taken-out illustrates a shaft extending through aligned channels formed in a pair of aligned bushing components;
Figure 12: in a transversal cross-sectional view taken along arrows XII-XII of Figure 9 illustrates the spatial relationship between the shaft and one of the bushing components;
Figure 13: in a transversal cross-sectional view taken along arrows XII-XII of Figure 10 illustrates the spatial relationship between the shaft and one of the bushing components;
Figure 14: in a transversal cross-sectional view taken along arrows XN-XIV of Figure 11 illustrates the spatial relationship between the shaft and one of the bushing components.
Detailed description:
Refernng to figures 5 through 8, there is shown, in elevational views with sections taken-off, a device 10 in accordance with an embodiment of the present invention being used for creating aligned first and second final bushing channels 12, 14 in corresponding first and 1 o second bushing components 16, 18. The first and second final bushing channels 12, 14 are shown aligned about a common alignment axis 20 extending longitudinally therethrough.
The device 10 includes a boring means 22 for boring the first and second final bushing channels 12, 14 and a guiding means 24 for guiding said boring means along the alignment axes Referring now more specifically to Figure 4, there is shown in greater details some of the components of then device 10. The boring means 22 includes a boring head 26 defining a generally cylindrical head base 28. The head base 28, in turn, defines a head base first longitudinal end 30, a longitudinally opposed head base second longitudinal end 32, a head 2o base cylindrical wall 34 defining a head base channel 36 extending longitudinally therethrough and a head base longitudinal channel 38.
A set of boring blades 40 extends generally radially from the outer surface of the head base cylindrical wall 34. The boring blades 40 preferably extend from a position located substantially adjacent the head base first longitudinal end 30 to a head base connecting section 42 located adjacent the head base second longitudinal end 32.
s Each one of the boring blades 40 defines a tapered blade initiating section 44 positioned adjacent the head base first longitudinal end 30. Each blade initiating section 44 tapers from the blade outer peripheral cutting edge towards the head base cylindrical wall 34 in a direction leading towards the head base first longitudinal end 30.
to Each blade initiating section 44 preferably forms an angle A having a value substantially in the range of 1.5 degrees with the outer surface of the cylindrical wall 34.
Also, preferably, each blade initiating section 44 preferably extends over a distance D having a value substantially in the range of 1.6 centimetres.
Furthermore, each boring blade 40 is preferably longitudinally angled relative to the radius of the cylindrical head base 28 by an angle B having a value substantially in the range of 0.1 degrees. In cross-section, each boring blade 40 defines a generally parallelepiped-shaped configuration.
The boring means 22 also includes a releasable coupling means 46 for releasably coupling the boring head 26 to the guiding means 24 and to a torque generating means (not shown).
The coupling means 46 preferably includes a coupling shaft 48 defining a coupling shaft first longitudinal end 50, a coupling shaft second longitudinal end 52 and a coupling shaft longitudinal axis 54.
The coupling shaft first and second longitudinal ends 50, 52 are preferably both provided with corresponding coupling shaft first and second threaded segments 62, 64 for allowing releasable threaded coupling to the guiding means 24 at both longitudinal ends of the coupling shaft 48 for reasons which will be hereinafter disclosed.
The coupling shaft 48 is configured and sized so as to be at least partially substantially to fittingly and slidably inserted into said head base channel 36, preferably with the boring head 26 positioned between the coupling shaft first and second threaded segments 62, 64.
The coupling means 46 also preferably includes a releasable locking means for releasably locking together the boring head 26 and the coupling shaft 48 against relative rotational movement and bi-directional axial translation therebetween. In other words, the releasable locking means is provided for ensuring that the boring head 26 rotates solidarly with the coupling shaft 48 and also for ensuring that the boring head 26 is only allowed to translate axially relative to the coupling shaft 48 in one axial direction. Preferably, the releasable locking means is adapted to releasably lock together the boring head 26 and the coupling 2o shaft 48 with the coupling shaft 48 at least partially inserted into the head base channel 36.
The releasable locking means preferably includes at least one and preferably two locking protrusions protruding substantially outwardly and radially from the outer surface of the coupling shaft 48 and a corresponding locking groove 58 formed at the head base connecting section 42 in the head base cylindrical wall 34. In the preferred embodiment, a pair of locking protrusions are formed by a locking pin 56 protruding radially from a locking pin channel 60 extending transversally through the coupling shaft 48.
The coupling shaft 48 is preferably further provided with a grasp facilitating means for facilitating the grasping of the coupling shaft 48. 'The grasp facilitating means typically takes the form of an hexagonal grasping protrusion 66 extending outwardly from the outer surface of the coupling shaft 48 and preferably positioned intermediate the protruding sections of 1o the locking pin 56 and the coupling shaft second threaded segment 64. The grasping protrusion 66 also defines an abutment edge 68 adapted to abuttingly contact the longitudinal edge 70 of the head second longitudinal end 32 so as to optionally serve as an additional locking means for limiting the relative axial translational movement between the boring head 26 and the coupling shaft 48 in a predetermined direction.
The guiding means 24 includes a guiding sleeve 72 and a guiding shaft 74. The guiding sleeve 72 has a generally cylindrical sleeve wall 76 defining a sleeve first longitudinal end 82, a sleeve second longitudinal end 84 and a sleeve longitudinal axis 86. The sleeve wall 76 also defines an inner sleeve channel 78 having a substantially disc-shaped cross-sectional 2o configuration and a preferably generally frustro-conical sleeve outer surface 80.
The outer surface 80 of the guiding sleeve 72 thus preferably tapers conically in a direction leading towards the sleeve first longitudinal end 82. Optionally, the sleeve outer surface 80 i7 fizrther defines a sleeve grasping segment 88 positioned adjacent the sleeve second longitudinal end 84 and having a generally annular configuration.
The guiding shaft 74 has a generally elongated configuration defining a guiding shaft first longitudinal end 90, a guiding shaft second longitudinal end 92 and a guiding shaft longitudinal axis 94. The guiding shaft 74 has a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to either one of the coupling shaft first or second longitudinal ends 50, 52. Preferably, the guiding-to-coupling shaft releasable coupling means includes an internally threaded recess 96 formed in the guiding shaft first longitudinal end 90 for selective threadable coupling to both the coupling shaft first and second threaded segments 62, 64.
The guiding shaft 74 is also provided with a guiding shaft-to-torque generating means releasable coupling means for releasably coupling the coupling shaft and any components attached thereto to a suitable torque generating means (not shown) such as a drill-type power tool. The guiding shaft-to-torque generating means coupling means preferably includes a generally hexagonal guiding shaft grasping protrusion 98 extending axially and outwardly from the guiding shaft second longitudinal end 92.
2o The guiding shaft 74 has a generally cylindrical guiding shaft body 100 defining a guiding shaft outer surface 102 that is configured and sized for allowing the guiding shaft 74 to be substantially fittingly and slidably inserted within the inner sleeve channel 78. The guiding shaft 74 is configured and sized so as to be inserted within the inner sleeve channel 78 with the sleeve longitudinal axis 86 in a generally collinear relationship relative to the guiding shaft longitudinal axis longitudinal axis 94. The guiding sleeve 72 is thus adapted to guide the general orientation of the guiding shaft longitudinal axis 94 while allowing rotation of the guiding shaft 74 about its guiding shaft longitudinal axis longitudinal axis 94 and allowing relative translation movement between the guiding sleeve 72 and the guiding shaft 74.
Referring back to Figures 5 through 8, there is shown that the present invention also relates to a method for creating aligned first and second final component channels 12, 14 extending 1 o respectively through the corresponding spaced apart first and second components 16, 18.
The first and second final component channels 12, 14 being shown aligned about the common alignment axis 20 extending longitudinally therethrough.
The first and second final component channels 12 and 14 have corresponding first and second predetermined final internal diameters 108, 110 that are dependant on the external diameter of the boring head 26 which will be used. The first and second components 16, 18 are initially provided with corresponding first and second initial component channels 104, 106 extending longitudinally therethrough. The first and second initial component channels 104, 106 define corresponding first and second initial internal diameters 112, 114. The first and second components 16, 18 are initially positioned so that the first and second initial component channels 104, 106 are in a generally aligned relationship relative to each other.
The method in accordance with the present invention includes the steps of:
a) first, selecting the first and second components 16, 18 so that the first initial internal diameter 112 is smaller then the first predetermined final internal diameter 108 and the second initial internal diameter 114 is smaller then the second predetermined final s internal diameter 110;
b) then, as shown in Figures 5 and 6, using the first initial component channel 104 as a reaming guide for reaming the second initial component channel 106 having the second initial diameter 114 until it becomes the second final component channel 14 having the second predetermined final internal diameter 110;
to c) as shown in Figures 7 and 8, once the second final component channel 14 has been reamed, using the second final component channel 14 as a reaming guide for reaming the first initial component channel 104 having the first initial diameter 112 into the first final component channel 12 having the first predetermined final diameter 108 so that the first and second final component channels 12 and 14 are in alignment relative to each other.
is The method in accordance with the present invention can be readily performed using the device 10. More specifically, when the device 10, the following steps are involved:
a) as shown in Figure 5, positioning the guiding sleeve substantially concentrically within the first initial component channel 104;
2o b) with the guiding shaft first longitudinal end 90 attached to the coupling shaft first longitudinal end 50, slidingly inserting the guiding shaft 74 through the second initial component channel 106 until the guiding shaft second longitudinal end 92 is at least partially inserted within the sleeve channel 78;
c) as shown in Figure 6, driving the boring head 44 attached to the guiding shaft by the coupling shaft through the second initial component channel while the guiding shaft is guided by the guiding sleeve until the boring head produces the second final component channel;
d) as shown in Figure 7, with the guiding shaft first longitudinal end 90 attached to the coupling shaft second longitudinal end 52, slidingly inserting the boring head 44 and the guiding shaft 74 attached thereto through the newly formed second final component channel 14 towards the first initial component channel 104 until the boring head 44 reaches the first initial component channel 104 with the guiding shaft 74 still at least to partially inserted within the newly formed second final component channel 14;
e) positioning the guiding sleeve 72 substantially concentrically within the second final component channel 14 by sliding it onto the guiding shaft 74 and at least partially into the second final component channel 14;
f) as shown in figure 8, driving the boring head 44 through the first initial component channel 104 while the guiding shaft 74 is guided by the guiding sleeve 76 until the boring head 44 produces the first final component channel 16.
Figures 1 and 2 illustrate one example of a situation wherein it is desirable to create aligned first and second final bushing channels 12, 14 extending respectively through 2o corresponding spaced apart first and second bushing components 16, 18. In Figures 1 and 2, the bushing components 16, 18 are shown being used for rotatably supporting a camshaft 116 having a so-called "S"-type camshaft head 118. This type of arrangement is typically found in air brake systems for heavy vehicles such as trucks such as designated generally by the reference numeral 120. The bushing components 16, 18 are shown fixedly mounted on corresponding bushing supporting legs 122 extending radially from the outer peripheral surface of an axle sleeve 124. The "S"-type camshaft head 118 is typically used for activating the brake pads 126.
The conventional prior art method of overhauling such air brake systems involved replacing the camshaft 116 and its associated bushings 16, 18 with pre-bored bushings.
Since the supporting legs 122 and associated pre-bored bushings could potentially be poorly aligned, it was necessary to provide a relatively large clearance therebetween. This relatively large to clearance, in turn, caused the camshafts 116 to rotate loosely within the associated bushings.
The proposed method and device allow for in situ creation of the final bushing channels 12, 14. In other words, the final bushing channels 12, 14 are preferably formed once the bushing 16, 18 components are mounted on their respective supporting legs.
This reduces t 5 manipulation and transportation. It also ensures accurate alignment. As mentioned previously, the guiding-to-coupling shaft releasable coupling means allows for releasable coupling thereof to either one of the coupling shaft first or second longitudinal ends 50, 52.
This, in turn, allows for ergonomical operation of the device 10 even in crowded environments such as is often the case adjacent vehicle brake systems. Indeed, the guiding-2o to-coupling shaft releasable coupling means allows both bushing channels 12, 14 to be formed by manipulating the tool 10 in a single predominant axial direction.
Figures 9 through 14 illustrates various types of spatial relationship between shafts and bushings corresponding to dififerent alignment situations. Figures 9 and 12 illustrate a situation wherein a shaft 128 e:~ctends through una!i~Tned channels 130 formed in a pair of unaligned bushing components 132. As can be clearly seen in Figure 12, this creates an non-symmetrical clearmce 134 between the shaft 128 and the bushing component 132.
This type of situation could potentially lead to seizing of the sham 128 at its point of contact 136 with the bushing component: 132.
Figures 11 and 14 illus~;rate a situation wherein the bushing components 138 and associated channels 140 are perfi:ctly ali~~ed. The shaft 142 is thus symmetrically spaced by a clearance 144 symmetrically disposed therearound from the bushing component 1~(0. This hypothetical situation is. rarely attained in reality because of various constraints. Fi~;ures 10 and 13 illustrate a situation wherein although, as is often the case in real life situations, the bushing components 1416 are unaligned, their respective bushing channels 148 are aligned having been formed by the herein proposed method and device. As can be seen in Figure 13, even though the bashing components 146 are unaligned there nevertheless exists a symmetrical clearance 150 between the outer surface of the shaft 152 and the inner surface of the bushing channels 148.
2o It should be understood that the present invention including the device 10 and the hereinabove disclosed method is in no way limited to the field of bushing channels part of air brake systems and that both the method and device could be used for creating aligned channels or apertures ire other types of components and in various other contexts without departing from the scope of the present invention. Furthermore, numerous modifications, variations and adaptations could be made to the hereinabove disclosed invention without departing from the scope of the present invention as set forth in the following claims.
Claims (18)
1. A method for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components, said first and second final component channels having corresponding first and second predetermined final internal diameters, said first and second components being initially provided with corresponding first and second initial component channels extending therethrough, said first and second initial component channels defining corresponding first and second initial internal diameters, said first and second components being initially positioned so that said first and second initial component channels are in a generally aligned relationship relative to each other, said method comprising the steps of:
a) selecting said first and second components so that said first initial internal diameter is smaller then said first predetermined final internal diameter and said second initial internal diameter is smaller then said second predetermined final internal diameter;
b) using said first initial component channel as a reaming guide for reaming said second initial component channel having said second initial diameter until it becomes said second final component channel having said second final internal diameter;
c) once said second final component channel has been reamed, using said second final component channel as a reaming guide for reaming said first initial component channel having said first initial diameter into said first final component channel having said first final diameter so that said first and second final component channels in alignment relative to each other;
whereby using said first initial component channel as a reaming guide for forming said second final component channel and then said newly formed second final component channel as a reaming guide for forming said first final component channel ensures that said first and second final component channels are aligned relative to each other.
a) selecting said first and second components so that said first initial internal diameter is smaller then said first predetermined final internal diameter and said second initial internal diameter is smaller then said second predetermined final internal diameter;
b) using said first initial component channel as a reaming guide for reaming said second initial component channel having said second initial diameter until it becomes said second final component channel having said second final internal diameter;
c) once said second final component channel has been reamed, using said second final component channel as a reaming guide for reaming said first initial component channel having said first initial diameter into said first final component channel having said first final diameter so that said first and second final component channels in alignment relative to each other;
whereby using said first initial component channel as a reaming guide for forming said second final component channel and then said newly formed second final component channel as a reaming guide for forming said first final component channel ensures that said first and second final component channels are aligned relative to each other.
2. A method for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components as recited in claim 1 through the use of a device including a boring head, said boring head being mounted on a coupling shaft defining a pair of opposed coupling shaft first and second longitudinal ends; a guiding sleeve, said guiding sleeve defining an inner sleeve channel and a generally frustro-conical sleeve outer surface, said inner sleeve channel defining a sleeve channel longitudinal axis; a generally elongated guiding shaft defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis, said guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling of said guiding shaft selectively to either one of said coupling shaft first and second longitudinal ends, said guiding shaft being configured and sized so as to be at least partially substantially fittingly and slidably insertable within said sleeve channel with said sleeve channel longitudinal axis in a generally collinear relationship relative to said guiding shaft longitudinal axis; said guiding sleeve being configured so as to guide the orientation of said guiding shaft longitudinal axis while allowing rotation of said guiding shaft about said guiding shaft longitudinal axis; wherein the step of using said first initial component channel as a reaming guide for reaming said second initial component channel until it becomes said second final component channel involves a) positioning said guiding sleeve substantially concentrically within said first initial component channel;
b) with said guiding shaft first longitudinal end attached to said coupling shaft first longitudinal end, slidingly inserting said guiding shaft through said second initial component channel until said guiding shaft second longitudinal end is at least partially inserted within said sleeve channel;
c) driving said boring head attached to said guiding shaft by said coupling shaft through said second initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said second final component channel.
b) with said guiding shaft first longitudinal end attached to said coupling shaft first longitudinal end, slidingly inserting said guiding shaft through said second initial component channel until said guiding shaft second longitudinal end is at least partially inserted within said sleeve channel;
c) driving said boring head attached to said guiding shaft by said coupling shaft through said second initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said second final component channel.
3. A method for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components as recited in claim 1 through the use of a device including a boring head, said boring head being mounted on a coupling shaft defining a pair of opposed coupling shaft first and second longitudinal ends; a guiding sleeve, said guiding sleeve defining an inner sleeve channel and a generally frustro-conical sleeve outer surface, said inner sleeve channel defining a sleeve channel longitudinal axis; a generally elongated guiding shaft defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis, said guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling of said guiding shaft selectively to either one of said coupling shaft first and second longitudinal ends, said guiding shaft being configured and sized so as to be at least partially substantially fittingly and slidably insertable within said sleeve channel with said sleeve channel longitudinal axis in a generally collinear relationship relative to said guiding shaft longitudinal axis; said guiding sleeve being configured so as to guide the orientation of said guiding shaft longitudinal axis while allowing rotation of said guiding shaft about said guiding shaft longitudinal axis; wherein the step of using said second final component channel as a reaming guide for reaming said first initial component channel into said first final component channel involves the steps of:
a) with said guiding shaft first longitudinal end attached to said coupling shaft second longitudinal end, slidingly inserting said boring head and said guiding shaft attached thereto through second final component channel until said boring head reaches first initial component channel with said guiding shaft at least partially inserted within said through second final component channel ;
b) positioning said guiding sleeve substantially concentrically within said second final component channel by sliding it onto said guiding shaft and at least partially into said second final component channel;
c) driving said boring head through said first initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said first final component channel.
a) with said guiding shaft first longitudinal end attached to said coupling shaft second longitudinal end, slidingly inserting said boring head and said guiding shaft attached thereto through second final component channel until said boring head reaches first initial component channel with said guiding shaft at least partially inserted within said through second final component channel ;
b) positioning said guiding sleeve substantially concentrically within said second final component channel by sliding it onto said guiding shaft and at least partially into said second final component channel;
c) driving said boring head through said first initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said first final component channel.
4. A method for aligning a first final component channel and a second final component channel respectively extending through spaced apart first and second components as recited in claim 1 through the use of a device including a boring head, said boring head being mounted on a coupling shaft defining a pair of opposed coupling shaft first and second longitudinal ends; a guiding sleeve, said guiding sleeve defining an inner sleeve channel and a generally frustro-conical sleeve outer surface, said inner sleeve channel defining a sleeve channel longitudinal axis; a generally elongated guiding shaft defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis, said guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling of said guiding shaft selectively to either one of said coupling shaft first and second longitudinal ends, said guiding shaft being configured and sized so as to be at least partially substantially fittingly and slidably insertable within said sleeve channel with said sleeve channel longitudinal axis in a generally collinear relationship relative to said guiding shaft longitudinal axis; said guiding sleeve being configured so as to guide the orientation of said guiding shaft longitudinal axis while allowing rotation of said guiding shaft about said guiding shaft longitudinal axis , wherein the steps of using said first initial component channel as a reaming guide for reaming said second initial component channel until it becomes said second final component channel and using said second final component channel as a reaming guide for reaming said first initial component channel into said first final component channel respectively involve the steps of:
a) positioning said guiding sleeve substantially concentrically within said first initial component channel;
b) with said guiding shaft first longitudinal end attached to said coupling shaft first longitudinal end, slidingly inserting said guiding shaft through said second initial component channel until said guiding shaft second longitudinal end is at least partially inserted within said sleeve channel;
c) driving said boring head attached to said guiding shaft by said coupling shaft through said second initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said second final component channel;
d) with said guiding shaft first longitudinal end attached to said coupling shaft second longitudinal end, slidingly inserting said boring head and said guiding shaft attached thereto through second final component channel until said boring head reaches first initial component channel with said guiding shaft at least partially inserted within said through second final component channel ;
e) positioning said guiding sleeve substantially concentrically within said second final component channel by sliding it onto said guiding shaft and at least partially into said second final component channel;
f) driving said boring head through said first initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said first final component channel.
a) positioning said guiding sleeve substantially concentrically within said first initial component channel;
b) with said guiding shaft first longitudinal end attached to said coupling shaft first longitudinal end, slidingly inserting said guiding shaft through said second initial component channel until said guiding shaft second longitudinal end is at least partially inserted within said sleeve channel;
c) driving said boring head attached to said guiding shaft by said coupling shaft through said second initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said second final component channel;
d) with said guiding shaft first longitudinal end attached to said coupling shaft second longitudinal end, slidingly inserting said boring head and said guiding shaft attached thereto through second final component channel until said boring head reaches first initial component channel with said guiding shaft at least partially inserted within said through second final component channel ;
e) positioning said guiding sleeve substantially concentrically within said second final component channel by sliding it onto said guiding shaft and at least partially into said second final component channel;
f) driving said boring head through said first initial component channel while said guiding shaft is guided by said guiding sleeve until said boring head produces said first final component channel.
5) A device for aligning about an alignment axis a first final component channel and a second final component channel respectively extending through spaced apart first and second components, said first and second final component channels having corresponding first and second predetermined final internal diameters, said first and second components being initially provided with corresponding first and second initial component channels extending therethrough, said first and second initial component channels defining corresponding first and second initial internal diameters, said first and second components being initially positioned so that said first and second initial component channels are in a generally aligned relationship relative to each other, said device comprising:
a) a boring means for boring said first and second final component channels and b) a guiding means for guiding said boring means along said alignment axis.
a) a boring means for boring said first and second final component channels and b) a guiding means for guiding said boring means along said alignment axis.
6) A device as recited in Claim 5 wherein said boring means includes a boring head defining a generally cylindrical head base, said head base defining a head base first longitudinal end, a longitudinally opposed head base second longitudinal end and a head base cylindrical wall, said head base cylindrical wall defining a head base channel extending longitudinally therethrough and a head base longitudinal axis; a set of boring blades extends generally radially from the outer surface of said head base cylindrical wall.
7) A device as recited in Claim 6 wherein each one of said boring blades defines a tapered blade initiating section positioned adjacent said head base first longitudinal end, each blade initiating section tapering from the blade outer peripheral cutting edge towards said head base cylindrical wall in a direction leading towards said head base first longitudinal end;
each blade initiating section forming a first angle having a value substantially in said range of 1.5 degrees with said outer surface of said cylindrical wall; each blade initiating section extending over a distance having a value substantially in the range of 1.6 centimetres; each boring blade being longitudinally angled relative to the radius of said cylindrical head base by a second angle having a value substantially in the range of 0.1 degrees.
each blade initiating section forming a first angle having a value substantially in said range of 1.5 degrees with said outer surface of said cylindrical wall; each blade initiating section extending over a distance having a value substantially in the range of 1.6 centimetres; each boring blade being longitudinally angled relative to the radius of said cylindrical head base by a second angle having a value substantially in the range of 0.1 degrees.
8) A device as recited in Claim 6 wherein said boring means includes a releasable coupling means for releasably coupling said boring head to said guiding means and to a torque generating means.
9) A device as recited in Claim 8 wherein said coupling means includes a coupling shaft defining a coupling shaft first longitudinal end, a coupling shaft second longitudinal end and a coupling shaft longitudinal axis; said coupling shaft first and second longitudinal ends being both provided with corresponding coupling shaft first and second threaded segments for allowing releasable threaded coupling to said guiding means at both longitudinal ends of said coupling shaft; said coupling shaft being configured and sized so as to be at least partially substantially fittingly and slidably insertable into said head base channel with said boring head positioned between said coupling shaft first and second threaded segments.
10) A device as recited in Claim 9 wherein said coupling means includes a releasable locking means for releasably locking together said boring head and said coupling shaft against relative rotational movement and bi-directional axial translation therebetween so as to ensure that said boring head rotates solidarly with said coupling shaft and also for ensuring that said boring head is only allowed to translate axially relative to said coupling shaft in one predetermined axial direction.
11) A device as recited in Claim 10 wherein said releasable locking means includes at least one locking protrusion protruding substantially outwardly and radially from said outer surface of said coupling shaft and a corresponding locking groove formed in said head base cylindrical wall.
12) A device as recited in Claim 11 wherein said coupling shaft is provided with a grasp facilitating means for facilitating the grasping of said coupling shaft.
13) A device as recited in Claim 12 wherein said grasp facilitating means includes an hexagonal grasping protrusion extending outwardly from said outer surface of said coupling shaft; said grasping protrusion being positioned intermediate said protruding section and said coupling shaft second threaded segment; said grasping protrusion also defining an abutment edge adapted to abuttingly contact the longitudinal edge of said head second longitudinal end so as to serve as an additional locking means for limiting the relative axial translational movement between said boring head and said coupling shaft in a predetermined direction.
14) A device as recited in Claim 5 wherein said guiding means includes a guiding sleeve and a guiding shaft, said guiding sleeve having a generally cylindrical sleeve wall defining a sleeve first longitudinal end, a sleeve second longitudinal end and a sleeve longitudinal axis; said sleeve wall also defining an inner sleeve channel having a substantially disc-shaped cross-sectional configuration and a generally frustro-conical sleeve outer surface;
said sleeve outer surface tapering conically in a direction leading towards said sleeve first longitudinal end.
said sleeve outer surface tapering conically in a direction leading towards said sleeve first longitudinal end.
15) A device as recited in Claim 14 wherein said guiding shaft has a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; said guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of said coupling means; said guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing said guiding shaft to be substantially fittingly and slidably inserted within said inner sleeve channel; said guiding shaft being configured and sized so as to be inserted within said inner sleeve channel with said sleeve longitudinal axis in a generally collinear relationship relative to said guiding shaft longitudinal axis longitudinal axis; whereby, said guiding sleeve is adapted to guide the general orientation of said guiding shaft longitudinal axis while allowing rotation of said guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation -movement between said guiding sleeve and said guiding shaft.
16) A device as recited in Claim 15 wherein said guiding shaft is provided with a guiding shaft-to-torque generating means releasable coupling means for releasably coupling said coupling shaft and any components attached thereto to a suitable torque generating means.
17) A device as recited in Claim 16 wherein said guiding shaft-to-torque generating means coupling means includes a generally hexagonal guiding shaft grasping protrusion extending axially and outwardly from said guiding shaft second longitudinal end.
18) A device as recited in Claim 9 wherein said guiding means includes a guiding sleeve and a guiding shaft, said guiding sleeve having a generally cylindrical sleeve wall defining a sleeve first longitudinal end, a sleeve second longitudinal end and a sleeve longitudinal axis; said sleeve wall also defining an inner sleeve channel having a substantially disc-shaped cross-sectional configuration and a generally frustro-conical sleeve outer surface;
said sleeve outer surface tapering conically in a direction leading towards said sleeve first longitudinal end; said guiding shaft having a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; said guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of said coupling means; said guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing said guiding shaft to be substantially fittingly and slidably inserted within said inner sleeve channel; said guiding shaft being configured and sized so as to be inserted within said inner sleeve channel with said sleeve longitudinal axis in a generally collinear relationship relative to said guiding shaft longitudinal axis longitudinal axis; whereby, said guiding sleeve is adapted to guide the general orientation of said guiding shaft longitudinal axis while allowing rotation of said guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation movement between said guiding sleeve and said guiding shaft; said guiding-to-coupling shaft releasable coupling means including an internally threaded recess formed in said guiding shaft first longitudinal end for selective threadable coupling to both said coupling shaft first and second threaded segments.
said sleeve outer surface tapering conically in a direction leading towards said sleeve first longitudinal end; said guiding shaft having a generally elongated configuration defining a guiding shaft first longitudinal end, a guiding shaft second longitudinal end and a guiding shaft longitudinal axis; said guiding shaft having a guiding-to-coupling shaft releasable coupling means for allowing releasable coupling thereof to both sides of said coupling means; said guiding shaft having a generally cylindrical guiding shaft body defining a guiding shaft outer surface that is configured and sized for allowing said guiding shaft to be substantially fittingly and slidably inserted within said inner sleeve channel; said guiding shaft being configured and sized so as to be inserted within said inner sleeve channel with said sleeve longitudinal axis in a generally collinear relationship relative to said guiding shaft longitudinal axis longitudinal axis; whereby, said guiding sleeve is adapted to guide the general orientation of said guiding shaft longitudinal axis while allowing rotation of said guiding shaft about its guiding shaft longitudinal axis longitudinal axis and allowing relative translation movement between said guiding sleeve and said guiding shaft; said guiding-to-coupling shaft releasable coupling means including an internally threaded recess formed in said guiding shaft first longitudinal end for selective threadable coupling to both said coupling shaft first and second threaded segments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2307810 CA2307810A1 (en) | 1999-05-20 | 2000-05-16 | Device and method for obtaining aligned channels in spaced apart components |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2275480 CA2275480A1 (en) | 1999-05-20 | 1999-05-20 | Aligned boring method for two support bearings, for brake camshafts of heavy vehicles |
| CA2,275,480 | 1999-05-20 | ||
| CA 2307810 CA2307810A1 (en) | 1999-05-20 | 2000-05-16 | Device and method for obtaining aligned channels in spaced apart components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2307810A1 true CA2307810A1 (en) | 2000-11-20 |
Family
ID=25681012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2307810 Abandoned CA2307810A1 (en) | 1999-05-20 | 2000-05-16 | Device and method for obtaining aligned channels in spaced apart components |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2307810A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673436A (en) * | 2020-06-18 | 2020-09-18 | 苏州工业园区叶饰恒精密机械有限公司 | Automatic assembling equipment for annular isolator shell |
| CN112355952A (en) * | 2020-12-18 | 2021-02-12 | 辉县市恒兴金属制品有限公司 | Peanut pickup machine grass discharging fan impeller assembly fixture |
-
2000
- 2000-05-16 CA CA 2307810 patent/CA2307810A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673436A (en) * | 2020-06-18 | 2020-09-18 | 苏州工业园区叶饰恒精密机械有限公司 | Automatic assembling equipment for annular isolator shell |
| CN112355952A (en) * | 2020-12-18 | 2021-02-12 | 辉县市恒兴金属制品有限公司 | Peanut pickup machine grass discharging fan impeller assembly fixture |
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