US2748642A - Device for retouching profiled pulleys - Google Patents

Device for retouching profiled pulleys Download PDF

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Publication number
US2748642A
US2748642A US204305A US20430551A US2748642A US 2748642 A US2748642 A US 2748642A US 204305 A US204305 A US 204305A US 20430551 A US20430551 A US 20430551A US 2748642 A US2748642 A US 2748642A
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US
United States
Prior art keywords
sheave
rope
profile
retouching
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US204305A
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English (en)
Inventor
Pirkner Ignaz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
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Publication of US2748642A publication Critical patent/US2748642A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/10—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only
    • B23Q35/101—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool
    • B23Q35/102—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool of one line
    • B23Q35/103—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool of one line which turns continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/36—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
    • B23B5/40—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning spherical surfaces inside or outside
    • 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
    • Y10T82/00—Turning
    • Y10T82/17—Lathe for pulley
    • 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
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2531—Carriage feed
    • Y10T82/2541—Slide rest

Definitions

  • the invention relates to a device for retouching profiled pulleys, and in particular worn-out rope sheaves.
  • the duration of service of hauling and hoisting ropes and cables is greatly influenced by the profile or section of the sheave.
  • the rope wearingly grinds oit the bottom of the profile of the sheave and burrows into same even often to the extent of a few millimeters.
  • the diameter of the rope is correspondingly reduced, and so is the diameter of the worn-out profile of the rope sheave, so that said profile tallies with the reduced diameter of the rope.
  • a hauling or hoisting rope, newly put into commission, will therefore, unless the sheave is altered, be laterally clamped and thus be exposed to a higher wear and tear from the very beginning.
  • the invention has for its object to eliminate these drawbacks, the process for retouching such sheaves substantially consisting in that a tracer, controlled by the profile or section to be retouched, is used for maintaining unaltered the relative position of the carrier of the retouching tool in respect to the profile portion of the rotating sheave which at the same moment is within the range of said tool, whilst the feed motion of the retouching tool goes on in harmony with the profile shape desired i, e. independently of the control motion of the tool carrier.
  • the tracer, controlling the tool carrier acts in the neighbourhood of the working tool on two points of the profile to be retouched, located symmetrically as far as this is possible.
  • the appliance provided by the invention for retouching such profiled discs (sheaves) is substantially characterized by the carriage of the retouching tool being supported e. g. on a cross-slide so as to be movable in all directions in a plane located transversely to the faces to be retouched, and being connected to a tracer guided on the profile to be worked in the neighbourhood of the retouching area, said tracer determining the relative position of the carriage in respect to the profile to be acted upon, whereas the retouching tool itself isindependently of the control motion of the carriagemovably and rockably or turnahly supported by same. Consequently, the tool itself can be controlled by hand in the manner used on ordinary lathes, Whilst the carriage is guided in conformity with the profile to he retouched.
  • the retouching installation is portable and is so designed as to be attachable to any fixture.
  • it may e. g. be fixed to the derrick itself so that the sheaves can be retouched in their operating positions.
  • the device can be employed in workshops, when the sheave can be fixed to the face plate of a lathe or a vertical turning machine or mill.
  • the drawing diagrammatic represents a device of this type with reference to an embodiment given by way of example.
  • Fig. l is a front elevation of the device according to the invention during the retouching of a rope sheave.
  • Fig. 2 is a side elevation.
  • Fig. 3 is a detail.
  • Figure 4 illustrates a device according to Figures 1 and 2 in operating position retouching a rope sheave on a hoisting tower
  • Figure 5 is a fragmentary transverse View partly in cross-section through the arrangement of Figure 4.
  • the device is fixed to any kind of base which in this particular case is constituted by two angle irons 2.
  • the carriage holding the retouching tool 3, is supported by means of the cross-slides 4 and 5 in such a manner as to be movable in all directions of one plane.
  • the carriage is fitted with cross-slides 6 and 7 so that the retouching tool, e. g. the cutter 3, can be displaced by hand according to the rope sheave profile desired.
  • a further possibility of motion consists in the guide 8 of the slide 7 being so attached to the slide 5 as to be rotatory about the axis of the screw 9 which signifies that the tool 3 can always be set to the correct cutting position.
  • the slide 5 which rockably or turnably supports the carriage consisting of the parts 6, 7, 8 is provided with a roller 10 running in the rope sheave profile 11, to be retouched, and thus controlling the slide 5 together with the carriage supported by same according to said profile that the carriage follows the distortions and the eccentricities of the sheave 11.
  • the pressure of the roller 10, together with the slide 5 and the entire carriage, in at least two directions against the profile to be retouched may also be brought about in another way, e. g. by spring loading, by hydraulic or pneumatic pressing-on devices, and the like.
  • the turning tool 3 may also be replaced by a grinding wheel.
  • the invention provides for the use of a tracer wheel 10 doubly contacting the rope sheave profile according to the embodiment shown in Fig. 3 the spreading angle of which, as referring to the rounding of the profile, will advantageously vary between 60 and 120. This prevents a distortion of the controlmotion by the profile bottom which, as a rule, is worn out irregularly.
  • retouching is preferably begun with a tool having two cutting faces symmetrical to the axes by means of which simultaneously the two contacting faces for the tracer can be worked.
  • said chips are blown off by means of a jet of compressed air, or the wheel is screened e. g. by a metal sheet.
  • FIG 4 illustrates the mechanism disclosed in Figure 2 in operating position and retouching a rope sheave or pulley on the hoisting tower of a mine shaft.
  • the rope sheave consists, and as shown in Figure 5, of a hub 16 from which extend riveted arms 18 connected to and supporting the rim of peripheral portion 17, the profile of which is to be retouched.
  • This rope sheave has, for example, a diameter of six or more millimeters.
  • the rim part 17 in most cases is only approximately 1 in. thick. With sheaves of this character the peripheral rim 17 is frequently deformed laterally or radially by as much as 1 in. or more so that reworking or overhauling the sheave on a lathe is no longer possible.
  • the drawing illustrates an arrangement which renders it possible to reprofile or rework the sheave while it is in its operating position on the hoisting tower.
  • the device constituting an improvement in accordance with this invention, and denoted by the arrow A, is fastened to the support frame 21 by securing the angle irons 2 thereto.
  • the rope sheave is turned slowly by the rope in the direction of the arrow B and the speed of turning is in accordance with the admissible cutting speed. It has been demonstrated that in this manner within eight hours a rope sheave may be overhauled by two men Without removing the rope and without an interruption of operation taking place. If, however, the sheave must be removed for the purpose of overhauling, it requires a larger number of men to reprofile the same and a considerable interruption of operation of the mine shaft.
  • the weight 24 maintains slide 5 in position against the cutting pressure of tool 3.
  • the feeler or tracing roller 10 is continuously held in contact with the profile 11, Figure 5, and slide 5 is so controlled that it follows all motions of profile 11 which result from a radial or lateral deformation and this slide is always held in unchanged posi tion relative to the respective profile section that is adjacent the operating tool 3.
  • the tool 3 can be manually controlled according to the desired form of profile 11.
  • This device renders it possible to retouch at any time worn-out, heavily distorted or non'circular sheaves for ropes, and the like, either in a workshop or on the spot, and in particular directly on the derrick and even with the rope remaining on the sheave, whereby it is advisable to make use of the lowest rope speed.
  • the sheave to be retouched may also be operated by a driving pulley fixed to the shaft or to the sheave itself.
  • Means for re-machining the rope groove of profiled pulleys comprising a base disposable adjacent a rotatable pulley the rope groove of which is to be remachined, crossed slides supported on said base, a tracer means carried by one of the slides and including angularly related contact surfaces contactable with the pulley groove at symmetrically related regions on opposite sides of the apex of the groove, means for moving the slides toward and maintaining the tracer means in contact with the pulley groove including separate means applying force to the tracer means in at least two directions so that the tracer means follows the contour of the pulley groove regardless of radial or lateral deformations, a tool means, tool carrying saddle means mounted on said crossed slides for any movement in a plane parallel to the plane of movement of the tracer means, said tool means being directed toward the periphery of the pulley and separate means for moving the tool respectively toward and transversely of the rope groove, independent of the movement of said crossed slides.
  • Means for refinishing the rope groove of sheaves, particularly sheaves that are deformed laterally and radially comprising a base adapted to be disposed adjacent the profiled periphery of a sheave to be refinished, crossed slides mounted on the base, and including upper and lower slides with relation to a sheave rotatable about a horizontal axis, both slides being simultaneously movable toward the sheave profile and the upper slide being movable transversely thereof, a tool carrying saddle supported by the slides and in turn including upper and lower crossed slides and a base, means rockably mounting the second mentioned base on said first mentioned upper slide, means for feeding one of the slides of said second mentioned upper and lower slides toward the periphery of the sheave, independent means for feeding the other of said slides transversely of the sheave, a tool carried by said last mentioned upper slide, and directed toward the periphery of the sheave, a tracer means connected to the first mentioned upper slide and extending toward the sheave, means for simultaneously moving said first mentioned group
  • Means for refinishing the rope groove of sheaves as defined in and by claim 3 in which the means for simultaneously moving the first mentioned group of slides toward the sheave periphery and the means for applying lateral force to the upper slide of said group comprise weight loaded cables.
  • Means for refinishing the rope groove of sheaves defined in and by claim 5 in which the tool is profiled and contacts the sheave periphery between the regions contacted by the contacting surfaces of the roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US204305A 1950-01-07 1951-01-04 Device for retouching profiled pulleys Expired - Lifetime US2748642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT678606X 1950-01-07

Publications (1)

Publication Number Publication Date
US2748642A true US2748642A (en) 1956-06-05

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Application Number Title Priority Date Filing Date
US204305A Expired - Lifetime US2748642A (en) 1950-01-07 1951-01-04 Device for retouching profiled pulleys

Country Status (4)

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US (1) US2748642A (is")
BE (1) BE500466A (is")
DE (1) DE900642C (is")
GB (1) GB678606A (is")

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977669A (en) * 1958-03-06 1961-04-04 Bendix Corp Apparatus for roll-burnishing aircraft wheels and the like
US3107563A (en) * 1960-06-08 1963-10-22 Us Rubber Co Apparatus for cutting belt-bands
FR2585857A1 (fr) * 1985-08-03 1987-02-06 Duesterloh Gmbh Procede et dispositif pour surveiller et pour rectifier la fourrure de cable des gorges du tambour d'entrainement d'une machine de transport par cable.
FR2588792A1 (fr) * 1985-10-18 1987-04-24 Innovation Usinage Site I Plus Procede et dispositif d'usinage ou de controle sur site pour pieces rotatives

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734639A (en) * 1902-10-29 1903-07-28 Paul Wallenstein Machine for turning down spindles for wagon-axles.
US998656A (en) * 1910-02-04 1911-07-25 Thomas Tattershall Attachment for lathes.
US1239486A (en) * 1917-02-08 1917-09-11 Frank T Highams Cutter.
US1644006A (en) * 1927-02-07 1927-10-04 George C Beck Piston-groove cleaner and deepener
US1668512A (en) * 1925-12-21 1928-05-01 Miller Albert Walter Device for dressing locomotive wheels
US2000300A (en) * 1932-04-11 1935-05-07 Horace F Scruby Tire grooving machine
US2000129A (en) * 1934-04-14 1935-05-07 Richard A Dunnam Grooving machine
US2039719A (en) * 1934-03-20 1936-05-05 Theodore S Kline Cylinder block reamer
US2213002A (en) * 1940-03-01 1940-08-27 Frank L Hall Wheel machining apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE559024C (de) * 1932-09-14 Demag Akt Ges Antriebsvorrichtung fuer in ihrer Gebrauchslage verbleibende Seilscheiben beim Nachbearbeiten der Seilrille unter Verwendung eines Reibtriebes
DE616887C (is") * 1932-11-02
DE618831C (de) * 1933-09-26 1935-09-17 Bleichert Transportanlagen G M Vorrichtung zum Nacharbeiten mehrrilliger, ungleichmaessig abgenutzter Seilscheiben

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734639A (en) * 1902-10-29 1903-07-28 Paul Wallenstein Machine for turning down spindles for wagon-axles.
US998656A (en) * 1910-02-04 1911-07-25 Thomas Tattershall Attachment for lathes.
US1239486A (en) * 1917-02-08 1917-09-11 Frank T Highams Cutter.
US1668512A (en) * 1925-12-21 1928-05-01 Miller Albert Walter Device for dressing locomotive wheels
US1644006A (en) * 1927-02-07 1927-10-04 George C Beck Piston-groove cleaner and deepener
US2000300A (en) * 1932-04-11 1935-05-07 Horace F Scruby Tire grooving machine
US2039719A (en) * 1934-03-20 1936-05-05 Theodore S Kline Cylinder block reamer
US2000129A (en) * 1934-04-14 1935-05-07 Richard A Dunnam Grooving machine
US2213002A (en) * 1940-03-01 1940-08-27 Frank L Hall Wheel machining apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977669A (en) * 1958-03-06 1961-04-04 Bendix Corp Apparatus for roll-burnishing aircraft wheels and the like
US3107563A (en) * 1960-06-08 1963-10-22 Us Rubber Co Apparatus for cutting belt-bands
FR2585857A1 (fr) * 1985-08-03 1987-02-06 Duesterloh Gmbh Procede et dispositif pour surveiller et pour rectifier la fourrure de cable des gorges du tambour d'entrainement d'une machine de transport par cable.
FR2588792A1 (fr) * 1985-10-18 1987-04-24 Innovation Usinage Site I Plus Procede et dispositif d'usinage ou de controle sur site pour pieces rotatives
EP0224419A1 (fr) * 1985-10-18 1987-06-03 INNOVATION POUR L'USINAGE SUR SITE -I PLUS (société à responsabilité limitée) Procédé et dispositif d'usinage ou de contrôle sur site pour pièces rotatives

Also Published As

Publication number Publication date
BE500466A (is")
GB678606A (en) 1952-09-03
DE900642C (de) 1953-12-28

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