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US2827808A - Positioning table - Google Patents

Positioning table Download PDF

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Publication number
US2827808A
US2827808A US634482A US63448257A US2827808A US 2827808 A US2827808 A US 2827808A US 634482 A US634482 A US 634482A US 63448257 A US63448257 A US 63448257A US 2827808 A US2827808 A US 2827808A
Authority
US
United States
Prior art keywords
pin
plate
support
workpiece
chamber
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
US634482A
Other languages
English (en)
Inventor
Arnold S Charlat
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.)
Howe & Fant Inc
Original Assignee
Howe & Fant Inc
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 to BE562117D priority Critical patent/BE562117A/xx
Application filed by Howe & Fant Inc filed Critical Howe & Fant Inc
Priority to US634482A priority patent/US2827808A/en
Priority to GB33243/57A priority patent/GB819948A/en
Priority to FR1185671D priority patent/FR1185671A/fr
Priority to CH344279D priority patent/CH344279A/fr
Application granted granted Critical
Publication of US2827808A publication Critical patent/US2827808A/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
    • 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
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • 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
    • B23Q35/02—Copying discrete points from the pattern, e.g. for determining the position of holes to be drilled
    • 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
    • Y10T409/30868—Work support
    • 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
    • Y10T409/30868—Work support
    • Y10T409/308792—Indexable
    • 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
    • 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
    • Y10T74/1494—Locking means

Definitions

  • FIG. 4 A POSITIONING TABLE Filed Jan. 16, 1957 5 sheets-sheet s FIG. 4
  • fIFhis-invention relatestotablesforpositioning awoif'k- V ⁇ piece beneath-and ⁇ inz diiferent relationsf-to the Lstool' fa machine," l'such-'as -the drill fofl a-dr'illing 'machine-for the cutter of a millingwmachinallso'?thatoperations Vcan'fbe performed onthe workpiece Vat'desiifedlocations.
  • the invention isconcerned?with1'a-novel; positioning table forlthe; purpose stated,'-which includesa workpiece support having af free?
  • irefereiee may be made to the.iaccompanyingfdrawings, ⁇ in "which Fig. .1l-'is :aplan view oli-one form'of-'the'neW-table; bFigJfSZffis vaffr'agr'nentary end'elevationalV view"'f ⁇ the 'l ase;A l Fig. I3 fisial've'rtical sectional view fon' theif linef of Fig.1;
  • Pig. 4f is ia fragmentary Vvertical sectional ⁇ view Von" the linefS-S-of'Fig. 1, but o n-a largerscale thanthat ofFig'. .3;
  • Fig ..5 vis a view'lsimilar to Fig-4 jbut showingf'the workpiece support in a direntrelation ⁇ "to thdoeking lmea'ns.
  • Eachextension carries a 'block 13 ⁇ having ⁇ aY tongue-and groove' con- 'ne'ction -14 withthe extensionland lsecured'the'retoV by bo1ts"'1 ⁇ 5.
  • Ea'chlbloc'k has lan openingfor 'receivingthe 'end Eof-a ⁇ rod fland'each rod extends between and-is supported in blocks 13"onaligned extensions 11, A12at opposite ends of base 10. The two rods lie parallel above thelitop of' the Abase and are'unsupported between their ends.
  • a ⁇ 'carriage generallydesgnated 17 s mounted for movementalong the guide rods 16 and comprises a'cast- '-ing having apair oparallel passages V18 each"contain ⁇ ing a pair of ball bearing assemblies 19, ⁇ throu'gh' which one of the rods extends.
  • vThe carriagel has a centrall slot 20lyingmidwayebetween the rods 16 and'parallel thereto-andl thefslot isfdein'edy by a 1ip-20a ⁇ rising ⁇ above 'the -leveliof theitop'of thecarriage and having-af'fiat"top
  • The-lcarriage is providedfwith pairs of spaced extensions 2L 22 vfrom it's opposite'en'ds lyingat right anglesto-ithe axis of slot'i20.
  • /A'-workpiece Lsupport ⁇ 'generally designated 26 is mounted for movement onthe ⁇ guide rods 25 and com- 'prises- .af-casting having faat* topr and aligned'pairs of openings below ⁇ theV top and containingY-ballbearing assemblies 27.
  • - ⁇ Aguidev rod extends through each'pairof vbearing 'assemblies andthe ⁇ carriage extends 4down ⁇ be Y'tweeneth'e''roclsZS vand carries-'on -its Vlower end a location A1*:1tef28 provided with aplurality'of 'openings 29 extend- 'ing through vtlieiplate--and"of tapering form at their lower 'endsland ofl cylindricalf'format their upper.
  • the openings 29 in the location plate v28 receive means for locking fthe fplate 'and VVsupport Iin different positions "rlative to'the tool -and ⁇ such means include -apin 132 Vexte'ndingfthroughaLbushing "33- in an openingV throughs the top'of acap 34, ⁇ which-rests uponithetopk ofefa central lboss 35extend'i'ng upward from the base land -isf se'- cured iin'place' by Screws 36.
  • the cap Y34" is hollow and provides cylinder 34a containing a piston''37 havinga peripheral groove containing'a rubber Oiring l3Sengaging'thefinner wall f "the 'cylinder and acting F'as affpistonsri'ng
  • The' piston hasa Acentral opening, 'throughfwhich the lowerl end of' pin 32 extendsp and be'arsaga'inst the underside offza Washer 39 seated against ashoul'der on the pin.
  • Thepin '32 has a 'lengthwise' ⁇ bore withfa ⁇ chamber-"43 atits upper end containinga ⁇ ball 44, lwhich lismovable intoiand partly outA the chamber and is held inllplaceby the Ainturne'd outer ⁇ edge :of the pin lsurrounding "the chamber.-
  • the bore through the pin leads tofa'chamber V45, which opens through the Vlower'end of the 'pin and w 'contains a valve disc 46 heldin place against the lower end of the pinV by'a nut-'47 threaded on ⁇ the1pini32 vformed 1with-a chamber ⁇ 48 open through the lower end of the'lnut.
  • a rod 51 extends vthrough the bore through" the pin 32 andinto thechambers'43'and ⁇ 45 and *the'vlength of the rod "isf such that, v'whenthe ba11'49lis seatd'on the 'valve disc 46 and the lowerend of the rod rests "upon the' top of the ball, the upper end of theV rod forces the ball44 'to'project out of chamber43.
  • a location plate528 kvis rst prepared by vforming a numberofopenings v29 corresponding in number and relative position'p'to the locations, where operations areto be performed on a workpiece in a holder resting y,on the ,support 26 and oriented by means of pins 30 and 31.
  • V'l ⁇ he1plate is mounted on the underside of the support 26 and ori- ⁇ entedby pins 33 andV 31 and, when the'plateis in place,
  • the support 26 When an'operation is to be performed on the workpiece, the support 26 is moved with the ball 44 rolling over the surface of plate 28, until the desired opening on the plate lies above the pin 32. As soon as this occurs, the pin is moved ⁇ upwardly into the opening and the ball 44 is free to move outwardly from its chamber 43, so that the rod 51 is moved up by the spring 52 and the ball 49 is seatedY on the disc 46 by the spring 50.
  • the closing of the passage through the disc 46 cuts off the supply of air Vto theV cylinder 34a above the piston, whereupon the air pressure below the piston causes the piston to rise and the pin 32 is seated inthe opening in the plate 28 by the full air pressure and positively locksV the support in proper relation toY the tool.
  • the guide rods i6 on the base and the guide rods 25 on the carriage are supported only at their ends and, when pressure is applied in a drilling operation to the workpiece in a holder on the support 26, the rods would bend downward, if nothing were done to prevent. Any substantial distortion of the rods under pressure during drilling would result in errors in the work but, in the construction described, the cap 34 lies directly beneath the tool and the top of the cap is spaced by only a few thousandths of an inch from the under surface of the plate 28. Accordingly, only a slight distortion of the rods Vunder drilling pressure applied to the workpiece causes the capto be engaged bythe plate 28 andthe cap and the b,ossr.3 5 on.
  • theplate may be made of relatively soft steel. This simplifies the operations involved in the for-Y mation of the plate and substantially reduces the cost.
  • a table for positioning aV workpiece beneath the tool of a machine which comprises a base, a pair of parallel guides mounted on the base, a carriage mounted on the guides on the base for movement lengthwise of the guides, the,V carriage having anopening.
  • the table of chain 5 in which the pin is provided with a passage leading from below the piston to the space in the cylinder above the piston, a valve at the lower end .of the passage controls ow through the passage and is biased toward closed position, and means for opening the valve extend through the pin and are operable at the upper end of the pin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Jigs For Machine Tools (AREA)
US634482A 1957-01-16 1957-01-16 Positioning table Expired - Lifetime US2827808A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE562117D BE562117A (de) 1957-01-16
US634482A US2827808A (en) 1957-01-16 1957-01-16 Positioning table
GB33243/57A GB819948A (en) 1957-01-16 1957-10-24 Improvements in work-tables for machine tools
FR1185671D FR1185671A (fr) 1957-01-16 1957-10-31 Table de mise en place d'une pièce à usiner sur une machine-outil
CH344279D CH344279A (fr) 1957-01-16 1957-11-14 Table pour déterminer la position d'une pièce en travail sous l'outil d'une machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US634482A US2827808A (en) 1957-01-16 1957-01-16 Positioning table

Publications (1)

Publication Number Publication Date
US2827808A true US2827808A (en) 1958-03-25

Family

ID=24543978

Family Applications (1)

Application Number Title Priority Date Filing Date
US634482A Expired - Lifetime US2827808A (en) 1957-01-16 1957-01-16 Positioning table

Country Status (5)

Country Link
US (1) US2827808A (de)
BE (1) BE562117A (de)
CH (1) CH344279A (de)
FR (1) FR1185671A (de)
GB (1) GB819948A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990753A (en) * 1957-04-04 1961-07-04 Spohn Karl Method of and apparatus for making plate-and cylinder cams
US3053123A (en) * 1959-09-16 1962-09-11 Rosenthal Leon Riveting machines
US3064505A (en) * 1961-08-04 1962-11-20 Pierce Wrapping Machine Co Positioning table
US3541890A (en) * 1967-08-23 1970-11-24 Schiess Ag Device for arresting the turning table or the like of machine tools
JPS5218275A (en) * 1975-08-01 1977-02-10 Akebono Brake Ind Co Ltd Work table for boring machine
FR2595062A1 (fr) * 1986-03-03 1987-09-04 Renault Automation Table de souplesse, notamment pour robot?

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT360814B (de) * 1977-04-26 1981-02-10 Monforts Fa A Drehmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2383655A (en) * 1941-01-11 1945-08-28 Kearney & Trecker Products Cor Jig boring machine
CH253762A (de) * 1942-12-31 1948-03-31 Kahlhofer Heinz Vorrichtung zur Erzeugung einer Mehrzahl von Bohrungen an Werkstücken.
US2674139A (en) * 1952-01-25 1954-04-06 Acorn Tool & Mfg Inc Spacing table
US2742801A (en) * 1952-10-28 1956-04-24 Librascope Inc Boring machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2383655A (en) * 1941-01-11 1945-08-28 Kearney & Trecker Products Cor Jig boring machine
CH253762A (de) * 1942-12-31 1948-03-31 Kahlhofer Heinz Vorrichtung zur Erzeugung einer Mehrzahl von Bohrungen an Werkstücken.
US2674139A (en) * 1952-01-25 1954-04-06 Acorn Tool & Mfg Inc Spacing table
US2742801A (en) * 1952-10-28 1956-04-24 Librascope Inc Boring machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990753A (en) * 1957-04-04 1961-07-04 Spohn Karl Method of and apparatus for making plate-and cylinder cams
US3053123A (en) * 1959-09-16 1962-09-11 Rosenthal Leon Riveting machines
US3064505A (en) * 1961-08-04 1962-11-20 Pierce Wrapping Machine Co Positioning table
US3541890A (en) * 1967-08-23 1970-11-24 Schiess Ag Device for arresting the turning table or the like of machine tools
JPS5218275A (en) * 1975-08-01 1977-02-10 Akebono Brake Ind Co Ltd Work table for boring machine
FR2595062A1 (fr) * 1986-03-03 1987-09-04 Renault Automation Table de souplesse, notamment pour robot?

Also Published As

Publication number Publication date
BE562117A (de)
CH344279A (fr) 1960-01-31
GB819948A (en) 1959-09-09
FR1185671A (fr) 1959-08-04

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