Electrochemical machining tool and method for machining a product using the same

A technology of electrochemical machining and tools, applied in electrochemical machining equipment, machining electrodes, electric machining equipment, etc., can solve the problem of machining axial dynamic pressure generating grooves and other problems

Inactive Publication Date: 2007-10-10
MINEBEA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, although the above references generally describe machining radial dynamic pressure generating grooves on the inner circumference

Method used

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  • Electrochemical machining tool and method for machining a product using the same
  • Electrochemical machining tool and method for machining a product using the same
  • Electrochemical machining tool and method for machining a product using the same

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Embodiment Construction

[0033] The present invention will now be described in detail with reference to the accompanying drawings. For some components, their illustration and description are omitted where their presence is not necessary for those skilled in the art to understand the present invention.

[0034] 1A and 1B show two views of an electrochemical machining tool 1 . The protrusion 22 of the insulating guide tool 2 shown in FIG. 1A abuts on the seat cover support tool 3 . As shown in FIG. 1B , the protrusion 22 rests on the workpiece, such as the seat cover 4 .

[0035] As shown in FIG. 1A, FIG. 1B and FIG. 2, the electrochemical machining tool 1 includes an electrode body 11, a machining electrode 12 for forming a radial dynamic pressure generating groove in the seat cover 4, and a machining electrode 12 for forming a radial dynamic pressure generating groove in the seat cover 4. Machining electrodes 13 for axial dynamic pressure generating grooves and deburring processing electrodes 14 for...

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Abstract

An electrochemical machining tool (1) for electrochemical machining includes an electrode body (11). The electrochemical machining tool (1) and associated method can conduct simultaneous electrochemical machining of at least two of a radial dynamic pressure generating groove (43), an axial dynamic pressure generating groove (44) , and a removal of a burr (42) associated with an oil pool (41). Electrochemical machining is performed with groove machining electrodes (12, 13) and deburring electrodes (14). A sleeve (4) machined using the electrochemical machining tool (1) and associated method has the radial dynamic pressure generating groove (43) , the axial dynamic pressure generating groove (44) , and the deburred oil pool (41). The sleeve (4) can be used in a hydrodynamic pressure bearing for use in a spindle motor of a hard disk drive.

Description

[0001] Cross References to Related Applications [0002] This application is based on Japanese Patent Application No. 2004-272505 filed on September 17, 2004 and Japanese Patent Application No. 2005-207881 filed on July 15, 2005, which are incorporated by reference. technical field [0003] The present invention relates to electrochemical machining (ECM), and more particularly to electrochemical machining tools and machining methods for producing high quality products such as bearing housings at low cost using the electrochemical machining tools. Background technique [0004] A conventional electrochemical machining apparatus for deburring, such as described in Unexamined Japanese Patent Application H10-277842, includes electrodes and a pulse current source with a DC power supply and control means for applying pulse currents to the workpiece and the electrodes. The electrodes include processing electrodes for deburring the workpiece and electrodes for detecting the position ...

Claims

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Application Information

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IPC IPC(8): C25D17/12B23H11/00B23H3/00B23H3/04B23H5/02B23H5/10B23H7/26B23H7/32B23H9/02
Inventor 小原陆郎安田知行
Owner MINEBEA CO LTD
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