US3183781A - Apparatus for lapping chains - Google Patents

Apparatus for lapping chains Download PDF

Info

Publication number
US3183781A
US3183781A US322240A US32224063A US3183781A US 3183781 A US3183781 A US 3183781A US 322240 A US322240 A US 322240A US 32224063 A US32224063 A US 32224063A US 3183781 A US3183781 A US 3183781A
Authority
US
United States
Prior art keywords
chain
pair
twin
cylinders
twin cylinders
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
US322240A
Other languages
English (en)
Inventor
Meyrat Lucien
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.)
MEYRAT AND LUISONI
Original Assignee
MEYRAT AND LUISONI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MEYRAT AND LUISONI filed Critical MEYRAT AND LUISONI
Application granted granted Critical
Publication of US3183781A publication Critical patent/US3183781A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • 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
    • B24B27/0092—Grinding attachments for lathes or the like
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/309184—Milling including cutter limited to rotary motion
    • Y10T409/30924—Cutter turning about vertical axis

Definitions

  • the subject of the present invention is an apparatus for working out a polished surface, such as of a chain, with a milling cutter having toothed cutters formed of diamond.
  • chains is understood to embrace any type of chain, including a curb-chain, and more particularly jewelry chains.
  • the lapping of such chains has normally been performed by hand, the operator holding the chain in the tensioned condition, section by section, upon an adequate support element with his left hand, and proceeding to-lap the chain thus tensioned with his right hand.
  • the aim of the present invention is to obviate these disadvantages.
  • the apparatus is characterised by the fact that it comprises at least one pair of twin cylinders rotating freely with respect to one another, a return wheel, a driving device intended to exert a traction upon the chain, and a braking device acting thereon so that it remains tensioned, while the chain passes over one of the twin cylinders, then wraps the return wheel to pass back over the other twin cylinder, so that the two sides or strands located on the twin cylinders shall each have a different face applied against one of them; the mill Works on the two chain strands thus supported, so that the two faces of the chain are worked simultaneously.
  • FIG. 1 is a perspective view of a milling machine equipped with an apparatus for working chains.
  • FIG. 2 is an elevation view of the apparatus drawn to a larger scale.
  • FIGS. 3, 4 and 5 are sections of the apparatus taken along the lines III-III, IVIV, V-V respectively of FIG. 2.
  • FIG. 6 is a plan view of a detail of the apparatus, partly sectioned.
  • FIG. 7 is a section of a detail taken along the line VII-VII of FIG. 2.
  • the apparatus shown comprises a frame 1 intended to be fastened to the table of a milling machine, namely, in the example illustrated, to the vertical table 2 of a vertical spindle milling machine 3.
  • the frame 1 supports, mounted for rotation thereon, a pair of rubber-covered twin cylinders 4 and 5 (FIGS. 2 and 3) which are adapted to rotate freely with respect to one another.
  • Two pairs of twin wheels 6 and 7 are mounted idly on two shafts 8, each supported by a cullis 9 (FIGS. 2 and 6) which moves radially on the frame 1 with respect to the twin cylinders 4 and 5.
  • Said two pairs of twin wheels are diametrically opposite with respect to twin cylinders 4 and 5, and the pressure which they exert on the latter can be regulated by means of screws 10 which are supported against angle pieces 11 fixed to the frame 1, and are screwed each into one of the cullises 9.
  • the frame 1 further supports a return wheel 12 adapted for free rotation (FIGS. 2 and 3), and a pair of twin return wheels 13 and 14 (FIGS. 2 and 7) likewise capable of free rotation.
  • the apparatus illustrated comprises a chain driving device constituted by two rubber-coated rollers 15 and 16 (FIGS. 2, 4 and 5), mounted idly each on an axis 17, 18 respectively.
  • the axis 17 is fixed to the frame 1
  • the axis 18 is adapted for vertical sliding with respect to a bracket 19 which is itself fixed to the frame 1.
  • -A lever 20, articulated to the frame 1 at 21, is adapted to act by means of a link-rod 22 upon the axis 18 to raise the latter so as to space the roller 16 from the roller 15, or to restore it into the working position as shown, in which the two rollers are urged to contact one another, being resiliently urged by helical springs 23 interposed between the axis 18 and the bracket 19.
  • the two rollers 15 and 16 are both driven in rotation in mutually opposite directions by means of a motor, not shown, connected by a belt not shown to a pulley 24 keyed on a shaft 25 of the roller 15.
  • Said shaft 25 further supports a toothed-pinion 26 which, when the rollers are occupying their working positions, meshes with a toothedpinion 27 keyed on a shaft 28 of the roller 16.
  • the apparatus further comprises a chain braking device constituted of two pairs of rollers 29 and 30 urged in mutual contact (FIG. 2).
  • the two rollers 29, 29 are mounted idly directly upon the frame 1, whereas the two rollers 30 are each supported by an axis 31, itself mounted on a bracket 32 secured to the frame 1, similarly to the axis 18 and to the bracket 19 previously described.
  • the rollers 30, 3! are urged resiliently against the rollers 29, 29 by means of springs, not shown, similar to the springs 23.
  • Two levers 33 which are articulated at 34 each to one of the axes 31 and are supported against the top face of the bracket 32, permit the rollers 30, 30 to be spaced from the rollers 29, 29 counter to their restoring springs.
  • the apparatus illustrated operates in the following manner:
  • a chain 35 represented by a chain-dotted line in FIG. 2 is engaged on the two rollers 29, 29 beneath the twin return wheel 13, and upon the twin cylinder 4 between the latter and the twin wheels 6, serving as a pressure wheel, to pass round the return wheel 12.
  • the chain then passes over the twin cylinder 5, between the latter and the twin wheel 7, serving as a pressure wheel, beneath the twin return wheel 14 and between the traction rollers 15 and 16.
  • the levers 20 and 33 are operated so that the rollers 16, 30 respectively urge the chain onto the rollers 15, 29 respectively.
  • the two sides or strands of the chain being thus maintained in contact, each with one of the two twin cylinders 4 and 5, each have a different face applied to one of said cylinders.
  • the chain advances continuously, drawn by the driving rollers 15 and 16.
  • the apparatus should be regulated so that the braking device and the two pairs of wheels 6 and 7 produce a sufficient tension of the chain on the cylinders 4 and 5.
  • the apparatus permits not merely flattening a chain made of round wires by working its two faces, but also permits forming thereon decorative motifs by working with appropriate tools, not to mention working with a plurality of tools simultaneously.
  • the apparatus comprises a plurality of pairs of twin cylinders corresponding to a plurality of work stations.
  • said driving means comprising a pair of rollers urged resiliently against one another and driven in rotation in opposite directions between which the chain passes.
  • said braking device comprising at least one pair of rollers urged resiliently against one another and between which the chain passes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US322240A 1962-11-21 1963-11-07 Apparatus for lapping chains Expired - Lifetime US3183781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1363962A CH379318A (fr) 1962-11-21 1962-11-21 Appareil pour le lapidage de chaînes

Publications (1)

Publication Number Publication Date
US3183781A true US3183781A (en) 1965-05-18

Family

ID=4394092

Family Applications (1)

Application Number Title Priority Date Filing Date
US322240A Expired - Lifetime US3183781A (en) 1962-11-21 1963-11-07 Apparatus for lapping chains

Country Status (2)

Country Link
US (1) US3183781A (fr)
CH (1) CH379318A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112059890A (zh) * 2020-08-07 2020-12-11 巢湖市国力航标器材有限公司 一种锚链生产用链环滚抛装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110788725A (zh) * 2019-10-10 2020-02-14 黄建强 一种纤维轮研磨抛光机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1277891A (en) * 1918-02-15 1918-09-03 William G Evans Rail-cutting machine.
US2592161A (en) * 1949-08-05 1952-04-08 United States Steel Corp Apparatus for continuously abrading elongated strands

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1277891A (en) * 1918-02-15 1918-09-03 William G Evans Rail-cutting machine.
US2592161A (en) * 1949-08-05 1952-04-08 United States Steel Corp Apparatus for continuously abrading elongated strands

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112059890A (zh) * 2020-08-07 2020-12-11 巢湖市国力航标器材有限公司 一种锚链生产用链环滚抛装置

Also Published As

Publication number Publication date
CH379318A (fr) 1964-06-30

Similar Documents

Publication Publication Date Title
US2671992A (en) Edge grinding machine for glass plates or the like
GB1299392A (en) Belt sanding machine
US2453972A (en) Machine for cutting and polishing nonspherical or conical surfaces by means of abrasive band tools
US2258378A (en) Machine for preparing pneumatic tires for retreading
US1950758A (en) Glass machine
US3299922A (en) Machine and method for producing decorative wood surfaces
US1809488A (en) Double spindle molding machine
US4732184A (en) Lumber saw-sizing machine
US2245341A (en) Buffing machine
US2540132A (en) Machine for rolling and setting leather
US3238830A (en) Device in cutting machines for cutting fabric or the like to bands
US2843977A (en) Machine for grinding double helical gears
US1833470A (en) Panel rip saw mechanism
DE491761C (de) Maschine zum gleichzeitigen Schleifen der oberen und unteren Flaeche von Metallplatten in der Naehe deren Raender
US2072113A (en) Duplex sewing machine
US768975A (en) Polishing-machine.
US2746117A (en) Tentering machines
US2823494A (en) Gear tooth grinder having radially directed belt
US1486288A (en) Woodworking machine
US1957602A (en) Machine for making razor blades
US2267521A (en) Grinding and polishing apparatus
US2322459A (en) Finishing and polishing equipment
US616597A (en) Portable roller-grinder
US1290491A (en) Saw-rolling machine.
US2009518A (en) Boarding machine