GB1303245A - - Google Patents

Info

Publication number
GB1303245A
GB1303245A GB1303245DA GB1303245A GB 1303245 A GB1303245 A GB 1303245A GB 1303245D A GB1303245D A GB 1303245DA GB 1303245 A GB1303245 A GB 1303245A
Authority
GB
United Kingdom
Prior art keywords
edge
slit
blade
length
machining
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
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 filed Critical
Publication of GB1303245A publication Critical patent/GB1303245A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/02—Trimming or deburring

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

1303245 Electro-machining turbine blades D W DRAYCOTT and C I WILLIAMS (trading as MOUNT ENG. CO) 18 Sept 1970 [28 June 1969 32789/69 Heading C7B The longitudinal edge of a metallic aerofoil blade is radiussed in an electro-machining operation, the edge being located in spaced relative to the working surface of an electrode, from which surface electrolyte flows towards the edge during machining. As shown in Fig.5 a cathode block having a working face 10 has an opening there through from electrolyte inlet 30 converging to a narrow passage 18 terminating in slit 14 in the working face. The slit is co-extensive with the length of the edge of the blade 13 and is shaped so that an imaginary surface medial of the longitudinal walls defining the slit intersects the blade substantially medially there of throughout its length. In a modification shown in Fig.11 a cathode block 32 having a relatively short slit is moved along the length of the blade edge during machining and is maintained in correct relation to the said edge by a follower 36 of insulating material. The electrolyte may be circulated from a tank under gas pressure Fig.1, (not shown).
GB1303245D 1969-06-28 1969-06-28 Expired GB1303245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3278969 1969-06-28

Publications (1)

Publication Number Publication Date
GB1303245A true GB1303245A (en) 1973-01-17

Family

ID=10344014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1303245D Expired GB1303245A (en) 1969-06-28 1969-06-28

Country Status (1)

Country Link
GB (1) GB1303245A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187967A (en) * 1991-09-16 1993-02-23 General Electric Company Laser trimming of forgings
US5628622A (en) * 1994-09-14 1997-05-13 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Composite material turbine engine blade equipped with a seal and its production process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187967A (en) * 1991-09-16 1993-02-23 General Electric Company Laser trimming of forgings
US5628622A (en) * 1994-09-14 1997-05-13 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Composite material turbine engine blade equipped with a seal and its production process

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee