GB699709A - Improved method of finishing previously-formed curved slots and objects having curved slots finished thereby - Google Patents

Improved method of finishing previously-formed curved slots and objects having curved slots finished thereby

Info

Publication number
GB699709A
GB699709A GB17089/51A GB1708951A GB699709A GB 699709 A GB699709 A GB 699709A GB 17089/51 A GB17089/51 A GB 17089/51A GB 1708951 A GB1708951 A GB 1708951A GB 699709 A GB699709 A GB 699709A
Authority
GB
United Kingdom
Prior art keywords
wall
tool
curvature
grinding
walls
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
GB17089/51A
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
Publication of GB699709A publication Critical patent/GB699709A/en
Expired legal-status Critical Current

Links

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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/02—Wheels in one piece

Abstract

699,709. Grinding curved slots. HJELMBLAD, K. W. J. July 18, 1951 [Aug. 17, 1950], No. 17089/51. Class 60. A method of finishing a previously-formed spiral groove 3 in a cam plate for adjusting the jaws of a chuck and the like comprises grinding the concave and convex walls 4, 5 of the groove with the conical working-surfaces 9 of grinding tools 8. During the grinding operations, both the workpiece 1 and the tool 8 are rotated and either the workpiece or the tool is traversed ; the tool may also be reciprocated continuously between the top and the bottom of the slot during operations on the walls, or be arranged to make constant contact over the full depth thereof. In finishing the concave wall 4, the arrangement must be such that, for all points in the length of the wall, the radius of curvature of the line of intersection 12, Fig. 2, of an imagined extension of the surface 9 and a plane 7 passing through the bottom 6 of the slot is less than that of the line of intersection of the plane 7 and the wall 4. The axis 11 of the tool 8 should preferably intersect the plane 7 between the groove and the axis of curvature 15 of the wall 4. An analogous arrangement applies during grinding of the convex wall 5, Fig. 3, with the radius of curvature of the wall being less than that of the projection of the conical surface 9 and the axis 11 intersecting the top-surface of the workpiece at a point 17 outside the range between the groove and the axis of curvature 18 of the wall. The wall 5 may also be ground by a tool similar to that of Fig. 1. The bottom 6 of the groove may be ground by two separate tools, each designed for use adjacent one of the walls, or by a single tool, Fig. 6, incorporating the essential features of the separate tools. The radii of curvature of the lines of intersection of imagined extensions of the conical surfaces 20, 21, bounding the working surface 19 of the tool, and the plane 7 are related to the radii of curvature of the walls 4, 5 in the same way as are the surfaces 9 of the tools for grinding the walls 4, 5 respectively. Slots of other than constant width and having a sloping bottom may be finished.
GB17089/51A 1950-08-17 1951-07-18 Improved method of finishing previously-formed curved slots and objects having curved slots finished thereby Expired GB699709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE699709X 1950-08-17

Publications (1)

Publication Number Publication Date
GB699709A true GB699709A (en) 1953-11-11

Family

ID=20315431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17089/51A Expired GB699709A (en) 1950-08-17 1951-07-18 Improved method of finishing previously-formed curved slots and objects having curved slots finished thereby

Country Status (1)

Country Link
GB (1) GB699709A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324031A1 (en) * 1987-07-09 1989-07-19 United Technologies Corporation Method and apparatus for forming a curved slot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324031A1 (en) * 1987-07-09 1989-07-19 United Technologies Corporation Method and apparatus for forming a curved slot
EP0324031A4 (en) * 1987-07-09 1991-01-23 United Technologies Corporation Method and apparatus for forming a curved slot

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