US1352790A - Machine for grinding concave spherical surfaces - Google Patents

Machine for grinding concave spherical surfaces Download PDF

Info

Publication number
US1352790A
US1352790A US329178A US32917819A US1352790A US 1352790 A US1352790 A US 1352790A US 329178 A US329178 A US 329178A US 32917819 A US32917819 A US 32917819A US 1352790 A US1352790 A US 1352790A
Authority
US
United States
Prior art keywords
grinding
machine
shaft
spherical surfaces
concave spherical
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
US329178A
Inventor
Danielsson Axel
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
Application filed by Individual filed Critical Individual
Priority to US329178A priority Critical patent/US1352790A/en
Application granted granted Critical
Publication of US1352790A publication Critical patent/US1352790A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B24B11/00—Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture

Definitions

  • MACHINE FOB GRINDING CONCAVE SPHERICAL SURFACES.
  • the present invention relates to a proceeding for grinding concave spherical surfaces as well as to a device for carrying out this proceeding.
  • the object of the invention is a proceeding by means of which cavities are made. exactly spherical.
  • the invention has also for its object to provide simple means for carrying out the proceeding.
  • Figure 1 a plan view of a grinding machine for carrying out the proceeding; in Fig. 2 a side elevation of the same machine and in Fig. 3 a. section on the line AA in Fig. 2.
  • FIG. 19 indicates a sleeve-shaped work-piece, fixed to a shaft 9 by means of a holder 21 on a face plate 20, which shaft also is provided with a wheel 7 operating a toothed bar 27 on the under sideof the-table can be slid in a guide 8.
  • Thegear-wheel4 on the shaft 9 meshes with the shaft 2 by means of a gearwheel 41 on said last mentioned shaft.
  • the shaft 2 is journaled in two bearings 61 and provided with. a belt-pulley 3 driven by a belt 32..
  • the frame 1 is provided with a bracket 22, carrying a table 24., which is by means of a screwed spindle 26 provided with a hand-wheel 25 slidable in a guide 23 and positioned at an oblique angle to the guide 8.
  • a shaft 16, provided with a belt-pulley 18 is journaled in bearings 15 on the table 24, said shaft being driven by means of a Specification of Letters Patent. Patented Sept, 14 1920, Application filed October 7, 1919. Serial No. 329,178.
  • the center-line of the shaft 16 intersects the extended centerline of the shaft 9 in the center of the spherical surface to be ground.
  • the shaft 16 carries the grinding-Wheel 28 within range of the work-piece'l9.
  • the diameter of the grinding wheel as clearly shown in the fi ure must be made not larger than the d1- ameter of the a ertures of the work-piece, the boundary of w ich'apertures are preformed bythe spherical surface of which the cavity of the work-piece forms a portion.
  • the planes of these apertures form tangential planes to the smaller circle, shown in the tersect each other in the center of the spheri'-' cal surface of the cavity of the work-piece, an exactly spherical surface is imparted within the workiece 19.
  • the grinding is mainly effected albng the surface of a zone of a sphere, forming the intersection between the operative surface of the grindingwheel and the spherical surface within the work-piece.
  • it is fed backward axially on its shaft of rotation by means of the hand-wheel 25, so that the grinding-wheel from the position a, successively takes in the positions a and a and finally a as shown with dot and dash lines in the drawing.
  • a machine for grinding concave spherical surfaces comprising in combination arotatable shaft, a grinding-tool on one end thereof, another rotatable shaft, a holder on the last mentioned shaft for supporting a ring-shaped Work-piece so as toleave a free space between the Work-piece and the oppos: ing end surface of the holder, and means for journaling said shafts so that their center lines intersect each other in ithe center of the spherical surface to be ground, substantially as and for the purpose set forth.

Description

A. DANIELSSON.
MACHINE FOR GRINDING CONCAVE SPHERICAL SURFACES.v APPLICATION man OCT. 1. 1919..
1;:3523790. PatentedSept. 14, 1920.
2 SHEETS-SHEET I- )Z A Z Inventor A .DmteI/ssozp,
Amrzwy 'A. DANIELSSON. MACHINE FOR GRINDING CONCAVE SPHERICAL SURFACES. APPLICATION FILED OCT-7.1919.
1,352,790, PatentedSept. 14,1920.
2 SHEETS-SHEET 2- V UNITED STATES PATENT OFFICE.
AXEL DANIELSSON, OF GOTTENBORG, SWEDEN.
MACHINE FOB. GRINDING CONCAVE SPHERICAL SURFACES.
To all whom it may concern:
Be it known that I, AxEL DANIELssoN, a subject of the Kin of Sweden, residing at Gottenborg. Kingr om of Sweden, have in vented certain new and useful Improvements in Machines for Grinding Concaved Spherical Surfaces, of which the following is a specification.
The present invention relates to a proceeding for grinding concave spherical surfaces as well as to a device for carrying out this proceeding.
The object of the invention is a proceeding by means of which cavities are made. exactly spherical. The invention has also for its object to provide simple means for carrying out the proceeding.
To this and other ends the invention consists in certain improvements, which hereinafter will be fully described and ascertained in the annexed drawing.
In the accompanying drawing there is shown in Figure 1 a plan view of a grinding machine for carrying out the proceeding; in Fig. 2 a side elevation of the same machine and in Fig. 3 a. section on the line AA in Fig. 2.
Referring now to the drawing' 19 indicates a sleeve-shaped work-piece, fixed to a shaft 9 by means of a holder 21 on a face plate 20, which shaft also is provided with a wheel 7 operating a toothed bar 27 on the under sideof the-table can be slid in a guide 8. Thegear-wheel4 on the shaft 9 meshes with the shaft 2 by means of a gearwheel 41 on said last mentioned shaft. The shaft 2 is journaled in two bearings 61 and provided with. a belt-pulley 3 driven by a belt 32.. The frame 1 is provided with a bracket 22, carrying a table 24., which is by means of a screwed spindle 26 provided with a hand-wheel 25 slidable in a guide 23 and positioned at an oblique angle to the guide 8. A shaft 16, provided with a belt-pulley 18 is journaled in bearings 15 on the table 24, said shaft being driven by means of a Specification of Letters Patent. Patented Sept, 14 1920, Application filed October 7, 1919. Serial No. 329,178. I
,belt 81 on the pulley 18. The center-line of the shaft 16 intersects the extended centerline of the shaft 9 in the center of the spherical surface to be ground. The shaft 16 carries the grinding-Wheel 28 within range of the work-piece'l9.
In order to make it'possible for the grindlng wheel to be introduced into the sleeveshaped work-piece 19, the diameter of the grinding wheel as clearly shown in the fi ure must be made not larger than the d1- ameter of the a ertures of the work-piece, the boundary of w ich'apertures are preformed bythe spherical surface of which the cavity of the work-piece forms a portion. The planes of these apertures form tangential planes to the smaller circle, shown in the tersect each other in the center of the spheri'-' cal surface of the cavity of the work-piece, an exactly spherical surface is imparted within the workiece 19. The grinding is mainly effected albng the surface of a zone of a sphere, forming the intersection between the operative surface of the grindingwheel and the spherical surface within the work-piece. In the same degree as the grinding-wheel is worn, it is fed backward axially on its shaft of rotation by means of the hand-wheel 25, so that the grinding-wheel from the position a, successively takes in the positions a and a and finally a as shown with dot and dash lines in the drawing. During the whole time an exactly spherical surface will be performed, since theabove-mentioned mutual positions of the shafts, tool and work-piece continually are I present. When the limit and cannot be used further for the same size of work-piece, but must be re-' placed by another grinding-wheel. Thus it grinding-wheel has been diminished to the sue a,, it has reached its is necessary that the grinding wheel during ascertained the nature of my said invention, and in What manner the same is to be performed, I declare that What I claim is A machine for grinding concave spherical surfaces comprising in combination arotatable shaft, a grinding-tool on one end thereof, another rotatable shaft, a holder on the last mentioned shaft for supporting a ring-shaped Work-piece so as toleave a free space between the Work-piece and the oppos: ing end surface of the holder, and means for journaling said shafts so that their center lines intersect each other in ithe center of the spherical surface to be ground, substantially as and for the purpose set forth.
In testimony whereof I have afiixed my signature. AXEL DANIELSSON.
US329178A 1919-10-07 1919-10-07 Machine for grinding concave spherical surfaces Expired - Lifetime US1352790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US329178A US1352790A (en) 1919-10-07 1919-10-07 Machine for grinding concave spherical surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US329178A US1352790A (en) 1919-10-07 1919-10-07 Machine for grinding concave spherical surfaces

Publications (1)

Publication Number Publication Date
US1352790A true US1352790A (en) 1920-09-14

Family

ID=23284215

Family Applications (1)

Application Number Title Priority Date Filing Date
US329178A Expired - Lifetime US1352790A (en) 1919-10-07 1919-10-07 Machine for grinding concave spherical surfaces

Country Status (1)

Country Link
US (1) US1352790A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460472A (en) * 1943-10-13 1949-02-01 Ex Cell O Corp Process for improving the surface of form ground races
US2592071A (en) * 1949-02-25 1952-04-08 Gen Motors Corp Abrading machine
US3075320A (en) * 1958-12-01 1963-01-29 Philbrick Strickland Laminates Machine tool
US3115169A (en) * 1962-05-14 1963-12-24 Rodriguez Jose Stem splitter and grader for cherries
US3187470A (en) * 1962-11-28 1965-06-08 Professional Instr Co Center hole lapping apparatus
US3212405A (en) * 1963-07-24 1965-10-19 Helen Sue Smith Method for cutting internal spherical surfaces
US3262229A (en) * 1964-01-17 1966-07-26 Henry R Mckelvie Apparatus for and method of forming lubricant retaining grooves in textile spinning and twisting rings
US5086592A (en) * 1987-10-02 1992-02-11 Buderus Schleiftechnik Gmbh Grinding tool and method of using same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460472A (en) * 1943-10-13 1949-02-01 Ex Cell O Corp Process for improving the surface of form ground races
US2592071A (en) * 1949-02-25 1952-04-08 Gen Motors Corp Abrading machine
US3075320A (en) * 1958-12-01 1963-01-29 Philbrick Strickland Laminates Machine tool
US3115169A (en) * 1962-05-14 1963-12-24 Rodriguez Jose Stem splitter and grader for cherries
US3187470A (en) * 1962-11-28 1965-06-08 Professional Instr Co Center hole lapping apparatus
US3212405A (en) * 1963-07-24 1965-10-19 Helen Sue Smith Method for cutting internal spherical surfaces
US3262229A (en) * 1964-01-17 1966-07-26 Henry R Mckelvie Apparatus for and method of forming lubricant retaining grooves in textile spinning and twisting rings
US5086592A (en) * 1987-10-02 1992-02-11 Buderus Schleiftechnik Gmbh Grinding tool and method of using same

Similar Documents

Publication Publication Date Title
US1352790A (en) Machine for grinding concave spherical surfaces
US1832190A (en) Cutting machine
US2415062A (en) Cam grinding apparatus
US1830971A (en) Method of and apparatus for grinding gears
US1394704A (en) Pulley-grinding machine
US2252096A (en) Method and apparatus for finishing ball raceways or the like
US2350234A (en) Grinding machine
US1531281A (en) Machine for grinding the ends of arbors for the balance wheels of clocks or similar articles
US1870328A (en) Lapping machine
US1182362A (en) Grinding-machine.
US2220768A (en) Cylindrical grinding machine
US1995676A (en) Lens surfacing machine
US2303531A (en) Sanding and polishing tool
JP3964150B2 (en) Double-head surface grinding method and apparatus
US1722386A (en) Centerless grinding machine
US2736994A (en) Method of and apparatus for grinding gears
US3299582A (en) Crankshaft-simulating dresser
KR20050028659A (en) Ball grinding apparatus
US4292765A (en) Machine for abrading outside diameters and the method of making same
US1991712A (en) Grinding machine
GB635775A (en) Improvements in or relating to grinding, milling or the like machines
US2401486A (en) Beveling machine
US2823494A (en) Gear tooth grinder having radially directed belt
US1689928A (en) Method of and means for forming or working spherical surfaces, concave or convex
US2199053A (en) Means for dressing grinding wheels