GB528902A - Improvements in grinding or abrading machines - Google Patents

Improvements in grinding or abrading machines

Info

Publication number
GB528902A
GB528902A GB747939A GB747939A GB528902A GB 528902 A GB528902 A GB 528902A GB 747939 A GB747939 A GB 747939A GB 747939 A GB747939 A GB 747939A GB 528902 A GB528902 A GB 528902A
Authority
GB
United Kingdom
Prior art keywords
grinding
wheel
parting
tool
spindles
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
GB747939A
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.)
Coventry Gauge and Tool Co Ltd
Original Assignee
Coventry Gauge and Tool Co Ltd
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 Coventry Gauge and Tool Co Ltd filed Critical Coventry Gauge and Tool Co Ltd
Priority to GB747939A priority Critical patent/GB528902A/en
Publication of GB528902A publication Critical patent/GB528902A/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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/025—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work involving indexable work supporting means carrying several work pieces to be operated on in succession

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

528,902. Grinding screw-threads. COVENTRY GAUGE & TOOL CO., Ltd., and HARLEY, S. J. March 8, 1939, Nos. 7479 and 7480. [Class 60] [Also in Group XXII] Screw threads are ground either by the plunge cut method or by generation in a machine that employs a number of grinding- wheels acting on bar stock fed step by step through one or a number of rotary work spindles. Bar stock a is fed step by step by means associated with a hollow spindle band is ground by a wheel c on a slide d and the finished part is dressed by a wheel f. The first wheel may grind to diameter and the second wheel may form-grind, or one wheel may rough grind and the other finish grind the thread. In these cases a separate parting- tool is employed. In the machine shown in Fig. 2 four spindles are mounted in a turret. One grinding-operation takes place at a, a stock feed at a<SP>1</SP>, a second grinding operation at a<SP>2</SP>, and parting off at a<SP>3</SP>. The turret may carry eight spindles two being acted on simultaneously at each grinding station by a common wheel, stock being fed in two spindles simultaneously and the parting-tool being duplicated. A separate grinding-operation may be carried out on each spindle a, Fig. 4, the upper wheels c being carried by slides 1<SP>1</SP> superposed on the slides I for the lower wheels. A parting-tool, not shown, may sever the article on the completion of the four grinding operations, or one of the wheels may be used for severing after three operations. When only two grinding operations are required an additional parting- tool is provided and the articles are completed during each revolution of the turret. In a further modification four spindles carried by slides arranged as the wheel slides in Fig. 4 carry work acted on simultaneously by a single centrally arranged wheel. The wheels may be spaced apart on the same axis to produce the same or different diameters and forms. Additional tools may be incorporated to perform other operations before, during, or after the grinding operations.
GB747939A 1939-03-08 1939-03-08 Improvements in grinding or abrading machines Expired GB528902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB747939A GB528902A (en) 1939-03-08 1939-03-08 Improvements in grinding or abrading machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB747939A GB528902A (en) 1939-03-08 1939-03-08 Improvements in grinding or abrading machines

Publications (1)

Publication Number Publication Date
GB528902A true GB528902A (en) 1940-11-11

Family

ID=9833899

Family Applications (1)

Application Number Title Priority Date Filing Date
GB747939A Expired GB528902A (en) 1939-03-08 1939-03-08 Improvements in grinding or abrading machines

Country Status (1)

Country Link
GB (1) GB528902A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335310A1 (en) * 1975-12-16 1977-07-15 Olin Energy Systems Ltd Grinder with rotary multi workpiece head - has feed rate transition to contact grinding wheel slowly
EP0503491A1 (en) * 1991-03-08 1992-09-16 Taghi Dr.-Ing. Tawakoli Machine tool for machining by cutting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2335310A1 (en) * 1975-12-16 1977-07-15 Olin Energy Systems Ltd Grinder with rotary multi workpiece head - has feed rate transition to contact grinding wheel slowly
EP0503491A1 (en) * 1991-03-08 1992-09-16 Taghi Dr.-Ing. Tawakoli Machine tool for machining by cutting

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