US1648034A - Index plate - Google Patents

Index plate Download PDF

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Publication number
US1648034A
US1648034A US169261A US16926127A US1648034A US 1648034 A US1648034 A US 1648034A US 169261 A US169261 A US 169261A US 16926127 A US16926127 A US 16926127A US 1648034 A US1648034 A US 1648034A
Authority
US
United States
Prior art keywords
plate
pin
stop
index
collar
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
US169261A
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English (en)
Inventor
Ungerer Fritz
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB69627A external-priority patent/GB272794A/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1648034A publication Critical patent/US1648034A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/04—Indexing equipment having intermediate members, e.g. pawls, for locking the relatively movable parts in the indexed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
    • B23F23/08—Index mechanisms
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • Y10T74/1418—Preselected indexed position

Definitions

  • the present invention has reference to im- )rovements in dividing or index plates. or heads and relates more particularlyto 1mproved means for adjusting and locklng the indexing members thereof.
  • the worin wheel mounted on the work shaft or arbor of the index heads in the known art generally will be found provided with forty teef-hand meshes wlth .ag slnglethread worm upon the shaft of which latter is mounted the crank member supportlng theV index pin.
  • the worm wheelg with its,v shaft, obviousl will make one-fortieth of a revolut1on. If, or instance, a wheel of ten teeth 1s to be milled out, the worm must he rotated four times for each tooth. It is immaterial which annular row of graduation holes in the fixed ⁇ index member is used.
  • the :ontact edge of the other stop serving as :ontact edge for the index pin, will tangen'v ially cooperate with that hole of the 28-hole circle which is 24 divisions away from the starting hole.-
  • the lindex pin is moved from the starting edge tov the contact edge of thesecond stop member, and is then moved. twice around and finally inserted into the hole on the near edge of this second stop. The milling operation is now started, during which the stops are adjusted on the plate inthe sense of the crank rotation, until the starting edge again contacts with the locked index pin.
  • the known plate stops are provided with I bushings riding'on the worm shaft, which bushinffs are pressed against one another anl the index plate by means of a spring-controlled friction plate for preventing inadvertent dis lacement of these stops. Since, however, t e stops must be adjusted after each crank movement, their relative fixation merely by friction is insufficient for proper operation. If the operator during the adjusting movementfails to withdraw the index pin completely out of the domain of the stops, the pin is apt to .contact with the latter, which would cause disturbing relative displacement of the stops, which an attentive operator may notice andcorrect by careful re-adjustment. If, however, he 'fails to notice this undesired displacement of the stop or stops, then the work piece will have to be discarded inthe end as waste.
  • Fior. l is a side view of the new arrangement
  • tFig. 2 is a crosssection therethrough
  • Fig. 3 is a top view
  • Fig. 4 a section through 'a modified index pin
  • Figs. 5 views of a modification, of which Fig. 7 is a cross-section
  • Fig. 8 is a fragmentary crossy section through still another modification.
  • theholed index plate 3 is fixed on the hollow boss l of the fixed index head 2.
  • the circumferential face 30 ofthe plate 3 is of convex confirmation for seating the correspondingly concaved enlargements 4 of the collar 5, which latter is of spring character andissprung onto and 6 show front and rear the part 30, being thus safeguarded against lateral slipping-off, but it can readil be rotated on and about the plate 3.
  • the outer circumference of the collar 5 is sunk the dove-tail groove 6 for receiving the flared head 70 of the screw pins 7 of the bracket stops 9 and 10. The latter are secured to the collar 5 by these pins 7 and the thumb nuts 8.
  • the worm shaft 11 which, in well known manner, is rotated by means of the crank member 13 from which extends inwardlynear its one extremity the index pin 12.
  • the crank member 13 In order to adjust this pin to the radii of the several circles of holes, only one of which circles is shown here, there is provided in' the member 13 the slot 14 in'to which extends the squarely contracted end 15 of the shaft 11.
  • the nut 16 serves for locln'ng the member 13, which latter may conveniently be provided with a handle 17, as shown.
  • the index pin 12 can be moved out of the domain of the plateI 3 and the stops 9 and 10, against the pressure of its spring 18, by a pull on its knob 19.
  • the index pin l2 is withdrawn from the hole a, is then swun around to the stop edge 100, and then still urther through three complete revolutions, and finally dropped into the hole b.
  • the stops 9 and 10 are adjusted. For this purpose provision is made to rotate the collar 5 about the plate 3 in clockwise direction without the angular distance between the stops being altered.
  • crank 13 is again relatively shifted, after pin 12 has been retracted, to the contactl edge 100, and then a further three complete revolutions, when the pin is dropped into the hole c (Fig. 6), and so on.
  • I may arrange, according to the modified embodiment shown in Figs. 5, 6 and 7, the stop 9 upon the rear face of the plate 3 and extend the pin 12 so far through the latter that, on adjustment of the stops 9 and l0, the former makes contact with the pin at the rear of the plate 3 (Fig. 7). In this manner, also, the stops 9 and 10 cannot be confused.
  • the invention shows important advantages over prior constructions, as readily apparent.
  • VThe collar 5 can easily be removed from its seat by a short jerk on one of the nuts 8 in lateral direction.
  • the angular stop member distance can be adjusted only after the crank member has been removed, each stop being separately held by hand on the plate. In the present instance the crank member is not removed, so
  • index pin can be used as contact I member for one of the stops.
  • the collar 5 may also be slidably mounted, according to the modification shown in Fig. 8, on a separate member 21, or the like, arranged parallel of the plate 3 in the rear thereof, the stop members being so designed and lockable on the collar 5 that they can be adjusted and operate in the manner above described.
  • Vhat I claim is:
  • a dividing mechanism of the character set forth in combination with a fixed machine head including a plate member presenting at least one circle of axially extending graduation holes and a worm shaft rotatable in said head and extendin through said plate, a crank memberfixe on said shaft for rotation therewith in front of said holed plate, a snap index pin on said crank member for selective cooperation with said plate holes, a collar mounted for frictional circumferential rotation on said holed plate, stop members on said collar for cooperation with said index pin, and means associated with said stop members for allowing their individual adjustment on said collar.
  • a dividing mechanism of the chal'- acter in combination with a fixed machine head including a holed plate and a worm shaft vrotatably extending therethrough, a crank member lockable on-said shaft for throw alteration and for rotation therewith in front of said holed plate, -a snap pin at the operative crank end for selective cooperation with the holes in said plate, and means for temporarily holding said snap pin in retracted position, an elastic collar clampingly mounted on said holed plate for relative circumferential displacement thereon, stop members adjustable on said collar, and means for individually locking said stop members on' said collar, and said locking means also designed for increasing the clamping pressure between collar and supporting plate on contra-directed movementof said stop members.
  • a dividing mechanism of the character set forth in combination with a fixed machine head including a holed plate and a' worm shaft rotatablyV extending therethrough, a crank member on said shaft for rotation therewith in front of said holed plate, a snap pin on said crank member for selective coopera-tion with the holes in said plate, a carrier member mounted'on said holed plate for circumferential displacement thereon, and a rearand a front stop member independently adjustably lockable on said carr1er member and respectively extending radially across the front and rear faces of said plate, the holes of the latter extending clear through for allowing said snap pin to extend therethrough beyond the rear face of the plate for cooperation with the respec* tive rear stop.
  • a crank member lockable on said shaft, an index pin on said crank member, relatively adjustable stop members for alternate cooperation 'with said index pin, a carrier for said stop members, and fixed supporting means in ependent of said holed plate for said carrier, for allowing concentric displacement of the latter relative to said holed plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US169261A 1925-11-24 1927-02-18 Index plate Expired - Lifetime US1648034A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEU9051D DE459119C (de) 1925-11-24 1925-11-24 Einstellvorrichtung fuer Teilscheiben
GB69627A GB272794A (en) 1927-01-10 1927-01-10 Adjusting device for dividing plates

Publications (1)

Publication Number Publication Date
US1648034A true US1648034A (en) 1927-11-08

Family

ID=26000940

Family Applications (1)

Application Number Title Priority Date Filing Date
US169261A Expired - Lifetime US1648034A (en) 1925-11-24 1927-02-18 Index plate

Country Status (3)

Country Link
US (1) US1648034A (enrdf_load_stackoverflow)
BE (1) BE338018A (enrdf_load_stackoverflow)
DE (1) DE459119C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE459119C (de) 1928-04-26
BE338018A (enrdf_load_stackoverflow)

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