US20080051013A1 - Methods and apparatus for machining a coupling - Google Patents
Methods and apparatus for machining a coupling Download PDFInfo
- Publication number
- US20080051013A1 US20080051013A1 US11/926,944 US92694407A US2008051013A1 US 20080051013 A1 US20080051013 A1 US 20080051013A1 US 92694407 A US92694407 A US 92694407A US 2008051013 A1 US2008051013 A1 US 2008051013A1
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- United States
- Prior art keywords
- coupling member
- coupling
- troughs
- grinding
- coolant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F15/00—Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00
- B23F15/06—Making gear teeth on the front surface of wheels, e.g. for clutches or couplings with toothed faces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0061—Other grinding machines or devices having several tools on a revolving tools box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/062—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels using rotary dressing tools
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T483/00—Tool changing
- Y10T483/17—Tool changing including machine tool or component
- Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
- Y10T483/1736—Tool having specific mounting or work treating feature
- Y10T483/174—Abrading wheel
Definitions
- This invention relates generally to couplings, and more specifically to methods and apparatus for machining a coupling.
- Components manufactured for turbine engines may have tight tolerances and/or rigid specifications that must be satisfied for the components to function properly with other turbine engine systems.
- rotating components within the engine may be coupled with multi-piece couplings that are rotatably mated together. Because the components are mated together, manufacturing the components within the rigid tolerances may be essential to the performance of the component.
- a method for fabricating a coupling including a first annular coupling member and a second annular coupling member comprises coupling the first coupling member to a machine assembly that includes a plurality of grinding wheels coupled to a tool storage member, machining a plurality of troughs in the first coupling member using at least one of the plurality of grinding wheels, such that at least one projection is defined between adjacent troughs, coupling the second coupling member to the machine assembly, and machining a plurality of troughs in the second coupling member using at least one of the plurality of grinding wheels, such that the second coupling member is configured to rotatably couple to the first coupling member.
- a machine assembly for use in machining a coupling.
- the machine tool comprises a machine tool, at least two grinding wheels, and a tool storage member that is coupled to the machine tool.
- the at least two grinding wheels are removably coupled to the tool storage member.
- the machine tool is configured to use at least one of the two grinding wheels to machine a plurality of troughs in at least one generally annular coupling member, wherein at least one projection is defined between adjacent troughs, and such that the coupling member is configured to be rotationally coupled to another coupling member using the projections and troughs.
- a grinding wheel in a further aspect, includes a body, at least one grinding surface extending outwardly from the body, and a cooling system extending through at least one of the body and the at least one grinding surface for supplying coolant to the at least one grinding surface.
- FIG. 1 is a perspective view of an exemplary coupling
- FIG. 2 is a perspective view of a portion of the coupling shown in FIG. 1 ;
- FIG. 3 is a perspective view of an exemplary machining assembly for fabricating a coupling, such as the coupling shown in FIG. 1 ;
- FIG. 4 is a perspective partial cutaway view of a portion of an exemplary grinding wheel for use with a machining assembly, such as the machining assembly shown in FIG. 3 ;
- FIG. 5 is a cross-sectional view of a portion of the grinding wheel shown in FIG. 4 ;
- FIG. 6 is a perspective view of an exemplary scrubber assembly for a grinding wheel, such as the grinding wheel shown in FIG. 4 , and in an operational;
- FIG. 7 is a perspective view of the scrubber assembly shown in FIG. 6 illustrating the scrubber assembly in a retracted position
- FIG. 8 is a cross-sectional view of a portion of the scrubber assembly shown in FIG. 6 and taken along line 8 - 8 ;
- FIG. 9 is a perspective view of an exemplary dressing roll for use with a pallet assembly of a machining assembly, such as the machining assembly shown in FIG. 3 .
- FIG. 1 is a perspective view of an exemplary coupling 10 .
- FIG. 2 is a perspective view of a portion of coupling 10 .
- Coupling 10 includes a first coupling member 12 and a second coupling member 14 .
- Coupling members 12 and 14 each include a substantially cylindrically shaped body 16 and 18 , respectively.
- Bodies 16 and 18 are each annular and extend between a respective first end 20 or 22 and a respective second end 24 or 26 .
- a central axis 27 respectively, extends through bodies 16 and 18 .
- a bore 28 and 30 extends through each respective body 16 and 18 between each respective first end 20 or 22 and each respective second end 24 and 26 . More specifically, bores 28 and 30 are substantially concentric with respect to bodies 16 and 18 , respectively.
- a plurality of teeth 32 extend outwardly from each respective body second end 28 and 30 . More specifically, each tooth 32 extends outwardly from a respective root 36 to a respective tip 38 . More specifically, each tip 38 is truncated and forms a mating surfaces 40 . A plurality of respective troughs 44 and 46 are defined between adjacent teeth 32 .
- members 12 and 14 are rotatably coupled together. More specifically, when coupled together, members 12 and 14 are aligned such that teeth 32 extending from body 16 are aligned with, and received within troughs 46 , and such that teeth 32 extending from body 18 are aligned with, and received within troughs 44 such that rotational movement of body 16 or 18 with respect to the other body 18 or 16 , respectively, is prevented.
- FIG. 3 is a perspective view of an exemplary machining assembly 100 for machining a coupling, such as coupling 10 (shown in FIGS. 1 and 2 ).
- Assembly 100 includes a machine base 102 , a machine tool 104 , and a pallet assembly 106 .
- Machine tool 104 is coupled to base 102 and includes a tool storage carousel 108 moveably coupled thereto in any suitable manner.
- machine tool 104 is a computer numeric control (CNC) machining center.
- Carousel 108 includes a plurality of grinding wheels 110 that are removably coupled thereto in any suitable manner, and may also include any number of other machining tools 112 and/or inspection tools 114 that are also removably coupled thereto in any suitable manner.
- Machine tool 104 also includes an automatic tool changer 116 coupled thereto in any suitable manner, a scrubber assembly 118 movably coupled thereto in any suitable manner, and a chuck 120 .
- Chuck 120 includes a tool, and more specifically in the exemplary embodiment, grinding wheel 110 , coupled thereto.
- Tool changer 116 removes a tool from chuck 116 and replaces the removed tool with another tool selected from carousel 108 .
- Chuck 120 is configured to rotate about an axis of rotation 122 .
- Scrubber assembly 118 is also rotatable about axis of rotation 122 and provides coolant to a tool.
- Pallet assembly 106 includes a pallet base 124 , an automatic pallet changer 126 , and a plurality of pallets 128 .
- Pallets 128 are each removably coupled to base 102 and each includes a fixture base 130 and a fixture tower 132 that extends outwardly from fixture base 130 .
- Each fixture tower 130 includes a plurality of quick-change fixtures 134 coupled thereto in any suitable manner.
- Fixtures 134 are each removably coupled to at least one of coupling members 12 and 14 , and a dressing roll (not shown in FIG. 3 ). Accordingly, each fixture tower 130 can include a plurality of fixtures 134 , wherein each fixture is configured to couple with a different configuration of a coupling member 12 and 14 , or a dressing roll.
- Each pallet 128 is removably coupled to pallet base 124 .
- Pallet changer 126 couples and uncouples each pallet 128 to pallet base 124 .
- Pallet base 124 is positionable along axis 122 , and each pallet 128 is rotatable with respect to pallet base 124 along an axis of rotation 136 when a pallet 128 is coupled to pallet base 124 .
- FIG. 4 is a perspective partial cut-away view of a portion of an exemplary grinding wheel 110 for use with machining assembly 100 (shown in FIG. 3 ).
- FIG. 5 is a cross-sectional view of a portion of grinding wheel 110 and taken along line 5 - 5 .
- grinding wheel 110 is fabricated from aluminum oxide.
- wheel 110 is fabricated from cubic boron nitride (CBN).
- Grinding wheel 110 includes an arbor portion 200 , a grinding wheel body 202 , and a working projection 204 .
- Arbor portion 200 is removably coupled to machine tool chuck 120 (shown in FIG. 3 ) in any suitable manner.
- Grinding wheel working projection 204 extends outwardly from body 202 along an axis of rotation 206 and between a base 208 and a tip 210 .
- Projection 204 is substantially annular and includes an abrasive working surface 212 adjacent tip 210 .
- Surface 212 is configured to machine teeth troughs 44 and 46 , such that teeth 32 are defined between adjacent troughs 44 or 46 .
- surface 212 is a vitrified abrasive surface.
- a coolant passage 214 extends completely through arbor portion 200 and body 202 to a coolant chamber 216 defined within body 202 between a coolant plate 218 and a downstream end 220 of passage 214 .
- coolant passage 214 is substantially cylindrical and is concentrically aligned with respect to axis 206 and projection 204 .
- Coolant passage 214 is coupled in flow communication with a source of coolant (not shown), and delivers cooling fluid to chamber 216 .
- Coolant plate 218 is coupled to a radially inner surface 222 of projection 204 and a radially inner surface 224 of body 202 .
- Coolant plate 218 includes a plurality of openings 226 for channeling coolant to projection 204 , and more specifically towards abrasive surface 212 .
- Coolant openings 226 each include a central axis 228 that extends obliquely towards surface 212 with respect to axis of rotation 206 .
- coolant 230 is channeled from the coolant source through passage 214 to chamber 216 .
- coolant 230 is channeled across an upstream surface 232 of plate 218 and through openings 226 , wherein the cooling fluid is then channeled towards abrasive surface 212 .
- grinding wheel projection 204 is herein described and illustrated in the exemplary manner, it should be understood that the particular geometry and cross-sectional shape of projection 204 , and more specifically abrasive surface 212 , will vary depending on the particular configuration and geometrical shape of coupling 10 .
- the embodiment illustrated is intended as exemplary, and is not intended to limit the geometry and cross-sectional shape of projection 204 including abrasive surface 212 .
- FIG. 6 is a perspective view of an exemplary scrubber assembly 300 for use with grinding wheel 110 (shown in FIG. 4 ), and in an operational position.
- FIG. 7 is a perspective view of scrubber assembly 300 scrubber assembly 300 in a retracted position.
- FIG. 8 is a cross-sectional view of a portion of scrubber assembly 300 taken along line 8 - 8 .
- Assembly 300 supplies cleaning fluid, and includes a base 302 that is coupled to machine tool 104 (shown in FIG. 3 ) in any suitable manner.
- Base 302 is rotatable with respect to machine tool 104 , with respect to machine tool chuck 120 (shown in FIG. 3 ), and about axis 122 (shown in FIG. 3 ).
- Base 302 includes a first fluid duct 304 extending outwardly therefrom generally along axis 122 and having a fluid passageway 306 defined therein.
- First duct 304 extends outwardly along axis 122 to a downstream end 308 of duct 304 .
- Passageway 306 is coupled in flow communication with a source of fluid (not shown).
- a second fluid duct 310 extends outwardly from first duct 304 and is substantially perpendicular to duct 304 and axis 122 .
- duct 304 is formed integrally with duct 310 .
- duct 304 is an independent component fixedly coupled to duct 310 .
- Second duct 310 includes a passageway 312 that is defined therein, and is in flow communication with passageway 306 . Second duct 310 also includes a plurality of nozzles 314 that extend outwardly from duct 310 along axis 122 and towards chuck 120 and wheel 110 .
- Assembly 300 includes an operational position 316 (shown in FIG. 6 ), wherein during operation of machine tool 104 , and more specifically grinding wheel 110 , assembly 300 rotates around grinding wheel 110 such that nozzles 314 direct a coolant 318 delivered from passageways 306 and 312 to wheel 110 , and more specifically abrasive surface 212 (shown in FIG. 4 ).
- Assembly 300 also includes a retracted position 320 (shown in FIG. 7 ), wherein assembly 300 does not deliver fluid for cleaning to wheel 110 . More specifically, retracted position 320 may be used during a wheel 110 , or tool 112 or 114 , change, and also may be used when a conventional tool 112 or 114 is coupled to chuck 120 .
- FIG. 9 is a perspective view of an exemplary dressing roll 400 for use with pallet assembly 106 (shown in FIG. 3 ).
- dressing roll 400 is configured to removably couple to fixtures 134 (shown in FIG. 3 ) in any suitable manner.
- Roll 400 includes a first annular portion 402 , a second annular portion 404 extending outwardly from first portion 402 , a third annular portion 406 extending outwardly from second portion 404 , and a fourth annular portion 408 extending outwardly from third portion 406 .
- Second portion 404 , third portion 406 , and fourth portion 408 are each configured to dress at least one configuration of wheel 110 (shown in FIG. 4 ).
- other dressing rolls 400 may be coupled to assembly 106 to include even more configurations of wheel 110 .
- dressing roll 400 provides a continuous-path dressing system. More specifically, machine tool 104 is configured to generally simultaneously position wheel 110 and dress wheel 110 using roll 400 . In one embodiment, at least one of second portion 404 , third portion 406 , or fourth portion 408 includes diamond plating on an outer surface thereof for dressing wheel 110 .
- an operator loads at least one coupling member 12 and 14 onto fixtures 134 and a particular coupling member configuration is chosen to be machined.
- assembly 100 chooses the appropriate grinding wheel 110 from carousel 108 and couples the chosen wheel 110 to chuck 120 .
- assembly 100 chooses a pallet 128 that contains an appropriate dressing roll 400 for dressing the chosen wheel 110 , the dressing roll 400 is aligned with the chosen wheel 110 , and machine tool 104 dresses the wheel 110 using roll 400 .
- Assembly 100 then chooses a pallet 128 that contains a coupling member 12 or 14 desired to be machined, aligns the chosen coupling 12 or 14 with grinding wheel 110 , and machines the chosen coupling 12 or 14 using the chosen grinding wheel 110 .
- assembly 110 is coupled to at least one processor (not shown) that facilitates executing the above-described method for machining a coupling 12 or 14 .
- the above-described machining assembly is cost-effective, highly reliable, and highly accurate for machining a coupling. More specifically, the assembly allows a plurality of coupling configurations to be machined without manually changing machine tools and machine fixtures, resulting in lower cycle times and possibly a reduced inventory. In addition, the above-described assembly provides improved cooling to a grinding wheel, and further provides a continuous path dressing system. Because of the above, the machining assembly facilitates machining a higher quality coupling having a decreased dimensional variation in a cost-effective and reliable manner.
- machining assemblies Exemplary embodiments of machining assemblies are described above in detail.
- the systems are not limited to the specific embodiments described herein, but rather, components of each assembly may be utilized independently and separately from other components described herein.
- Each machining assembly component can also be used in combination with other machining assembly components.
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Abstract
A method facilitates fabricating a coupling including a first annular coupling member and a second annular coupling member. The method comprises coupling the first coupling member to a machine assembly that includes a plurality of grinding wheels coupled to a tool storage member, machining a plurality of troughs in the first coupling member using at least one of the plurality of grinding wheels, such that at least one projection is defined between adjacent troughs, coupling the second coupling member to the machine assembly, and machining a plurality of troughs in the second coupling member using at least one of the plurality of grinding wheels, such that the second coupling member is configured to rotatably couple to the first coupling member.
Description
- This invention relates generally to couplings, and more specifically to methods and apparatus for machining a coupling.
- Components manufactured for turbine engines may have tight tolerances and/or rigid specifications that must be satisfied for the components to function properly with other turbine engine systems. For example, rotating components within the engine may be coupled with multi-piece couplings that are rotatably mated together. Because the components are mated together, manufacturing the components within the rigid tolerances may be essential to the performance of the component.
- As such, manufacturing such components may be a time-consuming and laborious task. To facilitate streamlining the manufacturing process of such components, at least some known processes used a single-purpose machine that facilitates processing each component in a single-piece flow. However, such processes require frequent process setup changes to accommodate different component configurations based on the demand for each product. Specifically, known single-purpose machines include one fixture and one grinding wheel that must be manually removed and replaced each time a different component configuration is required. In addition, to facilitate reducing process variation, each time grinding wheel and/or fixture is interchanged, manual machine adjustments must typically be made prior to commencing production.
- In one aspect a method for fabricating a coupling including a first annular coupling member and a second annular coupling member is provided. The method comprises coupling the first coupling member to a machine assembly that includes a plurality of grinding wheels coupled to a tool storage member, machining a plurality of troughs in the first coupling member using at least one of the plurality of grinding wheels, such that at least one projection is defined between adjacent troughs, coupling the second coupling member to the machine assembly, and machining a plurality of troughs in the second coupling member using at least one of the plurality of grinding wheels, such that the second coupling member is configured to rotatably couple to the first coupling member.
- In another aspect of the invention, a machine assembly for use in machining a coupling is provided. The machine tool comprises a machine tool, at least two grinding wheels, and a tool storage member that is coupled to the machine tool. The at least two grinding wheels are removably coupled to the tool storage member. The machine tool is configured to use at least one of the two grinding wheels to machine a plurality of troughs in at least one generally annular coupling member, wherein at least one projection is defined between adjacent troughs, and such that the coupling member is configured to be rotationally coupled to another coupling member using the projections and troughs.
- In a further aspect, a grinding wheel is provided. The grinding wheel includes a body, at least one grinding surface extending outwardly from the body, and a cooling system extending through at least one of the body and the at least one grinding surface for supplying coolant to the at least one grinding surface.
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FIG. 1 is a perspective view of an exemplary coupling; -
FIG. 2 is a perspective view of a portion of the coupling shown inFIG. 1 ; -
FIG. 3 is a perspective view of an exemplary machining assembly for fabricating a coupling, such as the coupling shown inFIG. 1 ; -
FIG. 4 is a perspective partial cutaway view of a portion of an exemplary grinding wheel for use with a machining assembly, such as the machining assembly shown inFIG. 3 ; -
FIG. 5 is a cross-sectional view of a portion of the grinding wheel shown inFIG. 4 ; -
FIG. 6 is a perspective view of an exemplary scrubber assembly for a grinding wheel, such as the grinding wheel shown inFIG. 4 , and in an operational; -
FIG. 7 is a perspective view of the scrubber assembly shown inFIG. 6 illustrating the scrubber assembly in a retracted position; -
FIG. 8 is a cross-sectional view of a portion of the scrubber assembly shown inFIG. 6 and taken along line 8-8; and -
FIG. 9 is a perspective view of an exemplary dressing roll for use with a pallet assembly of a machining assembly, such as the machining assembly shown inFIG. 3 . -
FIG. 1 is a perspective view of anexemplary coupling 10.FIG. 2 is a perspective view of a portion ofcoupling 10.Coupling 10 includes afirst coupling member 12 and asecond coupling member 14.Coupling members shaped body Bodies first end second end bodies bore 28 and 30 extends through eachrespective body first end second end bores 28 and 30 are substantially concentric with respect tobodies - A plurality of
teeth 32 extend outwardly from each respective bodysecond end 28 and 30. More specifically, eachtooth 32 extends outwardly from arespective root 36 to arespective tip 38. More specifically, eachtip 38 is truncated and forms amating surfaces 40. A plurality ofrespective troughs adjacent teeth 32. - In the exemplary embodiment,
members members teeth 32 extending frombody 16 are aligned with, and received withintroughs 46, and such thatteeth 32 extending frombody 18 are aligned with, and received withintroughs 44 such that rotational movement ofbody other body -
FIG. 3 is a perspective view of anexemplary machining assembly 100 for machining a coupling, such as coupling 10 (shown inFIGS. 1 and 2 ).Assembly 100 includes a machine base 102, amachine tool 104, and apallet assembly 106.Machine tool 104 is coupled to base 102 and includes atool storage carousel 108 moveably coupled thereto in any suitable manner. In one embodiment,machine tool 104 is a computer numeric control (CNC) machining center. Carousel 108 includes a plurality of grindingwheels 110 that are removably coupled thereto in any suitable manner, and may also include any number ofother machining tools 112 and/orinspection tools 114 that are also removably coupled thereto in any suitable manner.Machine tool 104 also includes anautomatic tool changer 116 coupled thereto in any suitable manner, ascrubber assembly 118 movably coupled thereto in any suitable manner, and achuck 120. Chuck 120 includes a tool, and more specifically in the exemplary embodiment, grindingwheel 110, coupled thereto.Tool changer 116 removes a tool fromchuck 116 and replaces the removed tool with another tool selected fromcarousel 108. Chuck 120 is configured to rotate about an axis ofrotation 122.Scrubber assembly 118 is also rotatable about axis ofrotation 122 and provides coolant to a tool. -
Pallet assembly 106 includes a pallet base 124, anautomatic pallet changer 126, and a plurality ofpallets 128.Pallets 128 are each removably coupled to base 102 and each includes afixture base 130 and afixture tower 132 that extends outwardly fromfixture base 130. Eachfixture tower 130 includes a plurality of quick-change fixtures 134 coupled thereto in any suitable manner.Fixtures 134 are each removably coupled to at least one ofcoupling members FIG. 3 ). Accordingly, eachfixture tower 130 can include a plurality offixtures 134, wherein each fixture is configured to couple with a different configuration of acoupling member - Each
pallet 128 is removably coupled to pallet base 124.Pallet changer 126 couples and uncouples eachpallet 128 to pallet base 124. Pallet base 124 is positionable alongaxis 122, and eachpallet 128 is rotatable with respect to pallet base 124 along an axis ofrotation 136 when apallet 128 is coupled to pallet base 124. -
FIG. 4 is a perspective partial cut-away view of a portion of anexemplary grinding wheel 110 for use with machining assembly 100 (shown inFIG. 3 ).FIG. 5 is a cross-sectional view of a portion of grindingwheel 110 and taken along line 5-5. In one embodiment, grindingwheel 110 is fabricated from aluminum oxide. In an alternative embodiment,wheel 110 is fabricated from cubic boron nitride (CBN).Grinding wheel 110 includes anarbor portion 200, agrinding wheel body 202, and a workingprojection 204.Arbor portion 200 is removably coupled to machine tool chuck 120 (shown inFIG. 3 ) in any suitable manner. - Grinding
wheel working projection 204 extends outwardly frombody 202 along an axis ofrotation 206 and between a base 208 and atip 210.Projection 204 is substantially annular and includes anabrasive working surface 212adjacent tip 210.Surface 212 is configured tomachine teeth troughs teeth 32 are defined betweenadjacent troughs surface 212 is a vitrified abrasive surface. - A
coolant passage 214 extends completely througharbor portion 200 andbody 202 to acoolant chamber 216 defined withinbody 202 between acoolant plate 218 and adownstream end 220 ofpassage 214. In one embodiment,coolant passage 214 is substantially cylindrical and is concentrically aligned with respect toaxis 206 andprojection 204.Coolant passage 214 is coupled in flow communication with a source of coolant (not shown), and delivers cooling fluid tochamber 216.Coolant plate 218 is coupled to a radiallyinner surface 222 ofprojection 204 and a radiallyinner surface 224 ofbody 202.Coolant plate 218 includes a plurality ofopenings 226 for channeling coolant toprojection 204, and more specifically towardsabrasive surface 212.Coolant openings 226 each include acentral axis 228 that extends obliquely towardssurface 212 with respect to axis ofrotation 206. More specifically, during operation, coolant 230 is channeled from the coolant source throughpassage 214 tochamber 216. Withinchamber 216, coolant 230 is channeled across anupstream surface 232 ofplate 218 and throughopenings 226, wherein the cooling fluid is then channeled towardsabrasive surface 212. - Although grinding
wheel projection 204 is herein described and illustrated in the exemplary manner, it should be understood that the particular geometry and cross-sectional shape ofprojection 204, and more specificallyabrasive surface 212, will vary depending on the particular configuration and geometrical shape ofcoupling 10. The embodiment illustrated is intended as exemplary, and is not intended to limit the geometry and cross-sectional shape ofprojection 204 includingabrasive surface 212. -
FIG. 6 is a perspective view of anexemplary scrubber assembly 300 for use with grinding wheel 110 (shown inFIG. 4 ), and in an operational position.FIG. 7 is a perspective view ofscrubber assembly 300scrubber assembly 300 in a retracted position.FIG. 8 is a cross-sectional view of a portion ofscrubber assembly 300 taken along line 8-8.Assembly 300, as described below, supplies cleaning fluid, and includes a base 302 that is coupled to machine tool 104 (shown inFIG. 3 ) in any suitable manner.Base 302 is rotatable with respect tomachine tool 104, with respect to machine tool chuck 120 (shown inFIG. 3 ), and about axis 122 (shown inFIG. 3 ). -
Base 302 includes afirst fluid duct 304 extending outwardly therefrom generally alongaxis 122 and having afluid passageway 306 defined therein.First duct 304 extends outwardly alongaxis 122 to adownstream end 308 ofduct 304.Passageway 306 is coupled in flow communication with a source of fluid (not shown). Asecond fluid duct 310 extends outwardly fromfirst duct 304 and is substantially perpendicular toduct 304 andaxis 122. In one embodiment,duct 304 is formed integrally withduct 310. In an alternative embodiment,duct 304 is an independent component fixedly coupled toduct 310.Second duct 310 includes apassageway 312 that is defined therein, and is in flow communication withpassageway 306.Second duct 310 also includes a plurality ofnozzles 314 that extend outwardly fromduct 310 alongaxis 122 and towardschuck 120 andwheel 110. -
Assembly 300 includes an operational position 316 (shown inFIG. 6 ), wherein during operation ofmachine tool 104, and more specifically grindingwheel 110,assembly 300 rotates around grindingwheel 110 such thatnozzles 314 direct a coolant 318 delivered frompassageways wheel 110, and more specifically abrasive surface 212 (shown inFIG. 4 ).Assembly 300 also includes a retracted position 320 (shown inFIG. 7 ), whereinassembly 300 does not deliver fluid for cleaning towheel 110. More specifically, retractedposition 320 may be used during awheel 110, ortool conventional tool -
FIG. 9 is a perspective view of anexemplary dressing roll 400 for use with pallet assembly 106 (shown inFIG. 3 ). As described above, dressingroll 400 is configured to removably couple to fixtures 134 (shown inFIG. 3 ) in any suitable manner.Roll 400 includes a firstannular portion 402, a secondannular portion 404 extending outwardly fromfirst portion 402, a thirdannular portion 406 extending outwardly fromsecond portion 404, and a fourthannular portion 408 extending outwardly fromthird portion 406.Second portion 404,third portion 406, andfourth portion 408 are each configured to dress at least one configuration of wheel 110 (shown inFIG. 4 ). In addition, other dressing rolls 400 may be coupled toassembly 106 to include even more configurations ofwheel 110. - Furthermore, in combination with
machine tool 104, dressingroll 400 provides a continuous-path dressing system. More specifically,machine tool 104 is configured to generally simultaneously positionwheel 110 anddress wheel 110 usingroll 400. In one embodiment, at least one ofsecond portion 404,third portion 406, orfourth portion 408 includes diamond plating on an outer surface thereof for dressingwheel 110. - In operation, and referring now to
FIGS. 1-9 , an operator loads at least onecoupling member fixtures 134 and a particular coupling member configuration is chosen to be machined. Usingautomatic tool changer 116,assembly 100 chooses theappropriate grinding wheel 110 fromcarousel 108 and couples the chosenwheel 110 to chuck 120. In one embodiment, usingautomatic pallet changer 126,assembly 100 chooses apallet 128 that contains anappropriate dressing roll 400 for dressing the chosenwheel 110, thedressing roll 400 is aligned with the chosenwheel 110, andmachine tool 104 dresses thewheel 110 usingroll 400.Assembly 100 then chooses apallet 128 that contains acoupling member coupling grinding wheel 110, and machines the chosencoupling grinding wheel 110. In the exemplary embodiment,assembly 110 is coupled to at least one processor (not shown) that facilitates executing the above-described method for machining acoupling - The above-described machining assembly is cost-effective, highly reliable, and highly accurate for machining a coupling. More specifically, the assembly allows a plurality of coupling configurations to be machined without manually changing machine tools and machine fixtures, resulting in lower cycle times and possibly a reduced inventory. In addition, the above-described assembly provides improved cooling to a grinding wheel, and further provides a continuous path dressing system. Because of the above, the machining assembly facilitates machining a higher quality coupling having a decreased dimensional variation in a cost-effective and reliable manner.
- Exemplary embodiments of machining assemblies are described above in detail. The systems are not limited to the specific embodiments described herein, but rather, components of each assembly may be utilized independently and separately from other components described herein. Each machining assembly component can also be used in combination with other machining assembly components.
- While the invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.
Claims (21)
1. A method for fabricating a coupling including a first annular coupling member and a second annular coupling member, said method comprising:
coupling the first coupling member to a machine assembly that includes a plurality of grinding wheels coupled to a tool storage member;
machining a plurality of troughs in the first coupling member using at least one of the plurality of grinding wheels, such that at least one projection is defined between adjacent troughs;
coupling the second coupling member to the machine assembly; and
machining a plurality of troughs in the second coupling member using at least one of the plurality of grinding wheels, such that the second coupling member is configured to rotatably couple to the first coupling member.
2. A method in accordance with claim 1 wherein machining a plurality of troughs in the first coupling member further comprises supplying coolant to the grinding wheel through a coolant passageway defined in the grinding wheel.
3. A method in accordance with claim 1 wherein machining a plurality of troughs in the first coupling member further comprises:
machining a plurality of troughs in the first coupling member using an abrasive grinding surface extending from at least one of the grinding wheels; and
supplying coolant to the abrasive grinding surface through a coolant passageway defined in the grinding wheel
4. A method in accordance with claim 1 wherein machining a plurality of troughs in the first coupling member further comprises:
machining a plurality of troughs in the first coupling member using an abrasive grinding surface extending from at least one of the grinding wheels; and
supplying coolant to the abrasive grinding surface through a plurality of openings formed in the grinding wheel.
5. A method in accordance with claim 1 further comprising dressing at least one of said plurality of grinding wheels using a dressing assembly coupled to the machine assembly.
6-20. (canceled)
21. A method for fabricating a coupling, said method comprising:
providing a machine assembly that includes a machine base, a machine tool, and a pallet assembly;
coupling a first coupling member to the pallet assembly;
forming a plurality of troughs in the first coupling member using at least one of a plurality of grinding wheels, such that at least one projection is defined between each pair of adjacent troughs;
coupling a second coupling member to the pallet assembly; and
forming a plurality of troughs in the second coupling member using at least one of the plurality of grinding wheels, such that the second coupling member is configured to rotatably couple to the first coupling member.
22. A method in accordance with claim 21 wherein coupling a first coupling member to the pallet assembly comprises removably coupling the first coupling member to one of a plurality of fixtures coupled to the pallet assembly.
23. A method in accordance with claim 21 wherein forming a plurality of troughs in the first coupling member comprises:
forming a plurality of troughs in the first coupling member using an abrasive grinding surface that extends from at least one of the plurality of grinding wheels; and
supplying coolant to the abrasive grinding surface through a coolant chamber defined in the grinding wheel.
24. A method in accordance with claim 24 wherein supplying coolant to the abrasive grinding surface comprises channeling coolant across an upstream surface of a coolant plate that includes a plurality of openings that channel the coolant towards the abrasive grinding surface.
25. A method in accordance with claim 21 wherein coupling a first coupling member to the pallet assembly comprises coupling a first coupling member to a dressing roll, wherein the dressing roll is coupled to one of a plurality of fixtures coupled to the pallet assembly.
26. A method in accordance with claim 25 further comprising simultaneously positioning at least one of the plurality of grinding wheels with respect to the first coupling member, and dressing the grinding wheel using the dressing roll.
27. A method in accordance with claim 21 wherein forming a plurality of troughs in the first coupling member comprises:
locating a desired grinding wheel from the plurality of grinding wheels; and
coupling the desired grinding wheel to a chuck.
28. A method in accordance with claim 25 further comprising locating a selected pallet that contains an predetermined dressing roll for dressing a selected grinding wheel of the plurality of grinding wheels.
29. An apparatus for machining a coupling, said apparatus comprising a machine base, a machine tool, and a pallet assembly, said apparatus configured to:
receive a first coupling member onto a selected fixture of a plurality of fixtures, wherein said fixture is coupled to a fixture tower of said pallet assembly;
machine a plurality of troughs in the first coupling member using at least one of a plurality of grinding wheels, such that at least one projection is defined between each pair of adjacent troughs;
receive a second coupling member onto a selected fixture of said plurality of fixtures; and
machine a plurality of troughs in the second coupling member using at least one of said plurality of grinding wheels, such that the second coupling member is formed to rotatably couple to the first coupling member.
30. An apparatus in accordance with claim 29 further comprising an automatic tool changer, wherein said apparatus is further configured to:
use said automatic tool changer to locate a desired grinding wheel from said plurality of grinding wheels; and
couple said desired grinding wheel to a chuck.
31. An apparatus in accordance with claim 29 further comprising an automatic pallet changer, wherein said apparatus is further configured to:
use said automatic pallet changer to locate a first desired pallet comprising a dressing roll that corresponds to a desired grinding wheel of said plurality of grinding wheels;
align said dressing roll with said desired grinding wheel; and
dress said desired grinding wheel using said dressing roll.
32. An apparatus in accordance with claim 31 wherein said apparatus is further configured to:
use said automatic pallet changer to locate a second desired pallet comprising the first coupling member; and
align the first coupling member with said desired grinding wheel.
33. An apparatus in accordance with claim 31 wherein said apparatus is further configured to:
use said automatic pallet changer to locate a third desired pallet comprising the second coupling member; and
align the second coupling member with said desired grinding wheel.
34. An apparatus in accordance with claim 29 wherein each grinding wheel of said plurality of grinding wheels comprises an abrasive surface, a coolant passageway, and a coolant chamber, wherein said apparatus is further configured to supply coolant to said abrasive grinding surface through said coolant chamber.
35. A method in accordance with claim 34 wherein said apparatus is further configured to supply coolant to said abrasive grinding surface by channeling coolant across an upstream surface of a coolant plate that comprises a plurality of openings that channel the coolant towards said abrasive grinding surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/926,944 US20080051013A1 (en) | 2006-04-05 | 2007-10-29 | Methods and apparatus for machining a coupling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/397,999 US7335091B2 (en) | 2002-12-27 | 2006-04-05 | Methods and apparatus for machining a coupling |
US11/926,944 US20080051013A1 (en) | 2006-04-05 | 2007-10-29 | Methods and apparatus for machining a coupling |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/397,999 Division US7335091B2 (en) | 2002-12-27 | 2006-04-05 | Methods and apparatus for machining a coupling |
Publications (1)
Publication Number | Publication Date |
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US20080051013A1 true US20080051013A1 (en) | 2008-02-28 |
Family
ID=39197251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/926,944 Abandoned US20080051013A1 (en) | 2006-04-05 | 2007-10-29 | Methods and apparatus for machining a coupling |
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US (1) | US20080051013A1 (en) |
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USD926833S1 (en) | 2011-03-28 | 2021-08-03 | 1339513 Ontario Ltd. | Multiple spinner carousel for dressing a grinding wheel |
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US20190070701A1 (en) * | 2017-09-07 | 2019-03-07 | Disco Corporation | Cutting blade supplying apparatus and cutting blade case |
US11148243B2 (en) * | 2017-09-07 | 2021-10-19 | Disco Corporation | Cutting blade supplying apparatus and cutting blade case |
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