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GB568936A - Improvements relating to apparatus for determining angles - Google Patents

Improvements relating to apparatus for determining angles

Info

Publication number
GB568936A
GB568936A GB1355043A GB1355043A GB568936A GB 568936 A GB568936 A GB 568936A GB 1355043 A GB1355043 A GB 1355043A GB 1355043 A GB1355043 A GB 1355043A GB 568936 A GB568936 A GB 568936A
Authority
GB
United Kingdom
Prior art keywords
facets
telescope
plate
division plate
angular
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
Application number
GB1355043A
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 to BE463331D priority Critical patent/BE463331A/xx
Priority to NL123862D priority patent/NL123862C/xx
Application filed by Individual filed Critical Individual
Priority to GB1355043A priority patent/GB568936A/en
Publication of GB568936A publication Critical patent/GB568936A/en
Priority to FR923790D priority patent/FR923790A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/002—Shearing machines or shearing devices cutting by blades which move parallel to themselves for cutting in more than one direction, e.g. angle cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
    • B23D31/02—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines for performing different cutting operations on travelling stock, e.g. slitting and severing simultaneously
    • 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
    • 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/10—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of wood

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Wood Science & Technology (AREA)
  • Optics & Photonics (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)

Abstract

568,936. Division plates for determining angles. WILLIAMS, J. H., STENNING, A. E., and STENNING, R. H. Aug. 19, 1943, Nos. 13550/43 and 11541/44. [Class 97 (iii)] [Also in Groups XXII and XXIII] The angular positions of a work-piece rotatably mounted in a machine tool are determined by a division plate having optically-worked facets on its edge towards which a collimating telescope is directed. The division plate may comprise two or more superposed plates which, after the facets have been formed, may be displaced relatively to stagger the facets and thus divide the angular intervals when viewed in the telescope. In forming the division plate, the successive facets are formed in definite angular relationship, whilst the plate is held in a succession of angular positions determined in accordance with observations made with a collimating telescope of images formed by reflection in the first and subsequent facets. As shown in Fig. 1, the faceted division plate 10 is mounted on the workpiece (or on a mandrel 14 carrying the workpiece) and is rotated into the required angular positions, the exact settings being attained when an index mark 22 in the focal plane of an autocollimating telescope 16 coincides with the reflection of the mark in the aligned facet. In manufacturing the plate, two superposed glass discs are clamped to a turntable 32, Fig. 4, and the facets are formed on their edges by means of a rotating and oscillating polishing tool 36. By the use of four telescopes 38, 40, 42, 44 adjusted in position by trial and error, four facets at 90 degrees apart may first be formed. The angles may now be trisected and intermediate facets formed by the aid of a fifth telescope 48 and two mirrors 50 clamped to the turntable. Further facets may then be similarly formed by the aid of a sixth telescope 52 in conjunction with mirrors. The final subdivision of the angles and formation of the facets may be effected by the use of graduated graticules in the focal planes of the telescopes. By unclamping the two superposed faceted discs formed as described above and by giving them a small relative rotation to stagger the facets, a compound division plate with finer angular subdivisions is formed. The polishing wheel 36 (which forms the facets without the necessity of first grinding the glass) is mounted on an arm, 56, Fig. 6, pivoted about a spindle 58. A motor 62 operating through belts and through a crank pin 74 imparts a rotary and oscillatory movement to the polishing wheel. A manuallyoperated screw mechanism is provided to feed the polishing wheel towards the facet. In a method suited more particularly for producing a plate with an odd number of facets, two telescopes only are used.
GB1355043A 1943-08-19 1943-08-19 Improvements relating to apparatus for determining angles Expired GB568936A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE463331D BE463331A (en) 1943-08-19
NL123862D NL123862C (en) 1943-08-19
GB1355043A GB568936A (en) 1943-08-19 1943-08-19 Improvements relating to apparatus for determining angles
FR923790D FR923790A (en) 1943-08-19 1946-03-13 Optical divider plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1355043A GB568936A (en) 1943-08-19 1943-08-19 Improvements relating to apparatus for determining angles

Publications (1)

Publication Number Publication Date
GB568936A true GB568936A (en) 1945-04-26

Family

ID=10024970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1355043A Expired GB568936A (en) 1943-08-19 1943-08-19 Improvements relating to apparatus for determining angles

Country Status (4)

Country Link
BE (1) BE463331A (en)
FR (1) FR923790A (en)
GB (1) GB568936A (en)
NL (1) NL123862C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775158A (en) * 1952-05-09 1956-12-25 Reginald F Mitchell Optical angle setting and aligning device
US2850948A (en) * 1953-03-23 1958-09-09 Northrop Aircraft Inc Incremental worm sector cutter assembly
US3002279A (en) * 1957-07-02 1961-10-03 Miller Clarence Henry Calibrating mechanism
US3117178A (en) * 1959-11-03 1964-01-07 Starrett L S Co Optical polygons
DE1202993B (en) * 1961-06-20 1965-10-14 Michigan Tool Co Testing and setting device
US3264929A (en) * 1961-06-20 1966-08-09 Michigan Tool Co Checking and locating device
CN115824002A (en) * 2022-12-07 2023-03-21 重庆大学 Measuring method for center position of turntable and dressing wheel of worm grinding wheel gear grinding machine
US12298122B2 (en) * 2019-07-11 2025-05-13 MÖLLER-WEDEL OPTICAL GmbH Device and method for measuring a semifinished prism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698810B1 (en) * 1992-12-03 1995-03-03 Lorraine Laminage Method and device for controlling in a metallurgical installation, the parallelism of shear blades of the edges of a sheet and of sheet-clamping pinch rollers with respect to the axis of a train of rolls on which the sheet runs.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775158A (en) * 1952-05-09 1956-12-25 Reginald F Mitchell Optical angle setting and aligning device
US2850948A (en) * 1953-03-23 1958-09-09 Northrop Aircraft Inc Incremental worm sector cutter assembly
US3002279A (en) * 1957-07-02 1961-10-03 Miller Clarence Henry Calibrating mechanism
US3117178A (en) * 1959-11-03 1964-01-07 Starrett L S Co Optical polygons
DE1202993B (en) * 1961-06-20 1965-10-14 Michigan Tool Co Testing and setting device
US3264929A (en) * 1961-06-20 1966-08-09 Michigan Tool Co Checking and locating device
US12298122B2 (en) * 2019-07-11 2025-05-13 MÖLLER-WEDEL OPTICAL GmbH Device and method for measuring a semifinished prism
CN115824002A (en) * 2022-12-07 2023-03-21 重庆大学 Measuring method for center position of turntable and dressing wheel of worm grinding wheel gear grinding machine

Also Published As

Publication number Publication date
NL123862C (en)
FR923790A (en) 1947-07-17
BE463331A (en)

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