Method of microdeburring a bore

Details Method of microdeburring a bore Method of microdeburring a bore

1994-08-22

1996-06-04

Kisliuk, Bruce M.

Abrading

Machine

Sandblast

451102, B24C 300

Patent

active

055227600

ABSTRACT:
A method of microdeburring a selected portion of bore in a workpiece with a jet of abrasive gas is provided that is particularly applicable to the removal of microburrs at the interface between the timing and metering spill ports in a fuel injector metering barrel and the plunger bore. In the method, the nozzle that emits the abrasive gas is first inserted in and aligned with the bore so that the jet is focused on the microburrs at the interface. The nozzle is then actuated for a time period long enough for the jet to remove the microburrs from the bore, but insufficient for the jet to cause unwanted radiusing of the bore at the interface that could degrade the timing characteristics of the fuel injector. The method also includes the step of interposing a shield within the metering barrel to mask off the finished surface of the barrel from unwanted abrasion. The use of a gaseous, as opposed to a liquid carrier, in combination with the precise alignment of the jet and use of an abrasion shield in the workpiece, results in a precise elimination of unwanted microburrs that is unaccompanied by unwanted widening or radiusing of the ports at their interface with the plunger bore.

REFERENCES:
patent: 3193975 (1961-05-01), Millhiser
patent: 3485074 (1969-12-01), Compton
patent: 3535758 (1970-10-01), Hoet
patent: 3629093 (1971-12-01), Sickels
patent: 3729871 (1973-05-01), Taylor
patent: 3763603 (1973-10-01), Trischuk
patent: 3795175 (1974-03-01), Numao et al.
patent: 4473735 (1984-09-01), Steffen
patent: 4578164 (1986-03-01), Matsui et al.
patent: 4716684 (1988-01-01), Roach
patent: 4771659 (1988-09-01), Schmolke
patent: 4848122 (1989-07-01), Sullivan
patent: 4882879 (1989-11-01), Warner et al.
patent: 4893642 (1990-01-01), Parslow, Jr. et al.
patent: 4899712 (1990-02-01), De Bruyn et al.
patent: 4995949 (1991-02-01), Rhoades
patent: 5054247 (1991-10-01), Rhoades et al.
patent: 5107631 (1992-04-01), Wern
patent: 5112131 (1992-05-01), Pryor
patent: 5161336 (1992-11-01), Ritt et al.
patent: 5185957 (1993-02-01), Mizuguchi et al.
patent: 5218788 (1993-06-01), Ritt et al.
patent: 5218791 (1993-06-01), Parent et al.
patent: 5277528 (1994-01-01), Robinson

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