Jig for Winston cone baffle machining

Patent metadata

Field	Value
Publication number	US-9364933-B2
Application number	US-201113993615-A
Country	US
Kind code	B2
Filing date	Nov 14, 2011
Priority date	Dec 28, 2010
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

The present invention relates to a jig for processing the inner surface of an aluminum alloy Winston cone baffle having the thickness of a sheet through an ultra-precision machining, the jig having a shape identically corresponding to the outer shape of a Winston cone baffle having a can body shape made up of compound parabolic, and divided into an upper plate jig and a lower plate jig in formation, wherein the upper plate jig is divided in two, a left side jig and a right side jig, which are formed to correspond in shape and size so as to enable isolation or coupling to/from each other, and the inner surface of the Winston cone baffle attached inside the upper plate jig is made to enable ultra-precision machining at the cutting speed of 220 m/min-300 m/min, which enables the inner surface of the Winston cone baffle to process a slickenside having approximately 4 nm of surface roughness, and in particular, ultra-precision machining at surface roughness of Ra=2.32 nm in a processing condition of cutting speed at 260 m/min, cutting depth at 4 micrometer, and feeding speed at 1 mm/min, thereby enabling formation of a Winston cone baffle through low-cost ultra-precision machining.

First claim

What is claimed is:

1. A cutting jig for a Winston cone reflector, the cutting jig comprising:
an upper jig comprising a left jig and a right jig that are detachably coupled to each other by bolts and nuts, and are symmetrical in shape and size, the left jig and the right jig having a plurality of through holes circumferentially formed in an upper circumference thereof at a predetermined uniform interval and a plurality of through holes vertically formed in a central portion thereof at a predetermined uniform interval, respectively, the plurality of through holes for controlling a balance weight of the cutting jig; and
a lower jig disposed under the upper jig, the Winston cone reflector having a thickness of a thin plate and made of an aluminum alloy,
wherein the cutting jig receives and fixes the Winston cone reflector in a device for cutting an inner surface of the Winston cone reflector having a thickness of a thin plate and formed of an aluminum alloy.

2. The cutting jig of claim 1 , wherein the lower jig is a circular plate structure on which the upper jig is seated, and comprises:
a circular protrusion plate with an outer diameter contacting an inner diameter of the upper jig, the circular protrusion plate protruding at an central part of the lower jig; and
a plurality of positioning pins disposed at a region near the outer diameter of the circular protrusion plate at a predetermined interval to determine a location of the Winston cone reflector mounted on the circular protrusion plate for a cutting process, and
a plurality of bolt holes formed at a region near the outer diameter of the lower jig at a predetermined interval for coupling the lower jig to the upper jig.

3. The cutting jig of claim 2 , wherein:
the left jig and the right jig of the upper jig are coupled to each other by a plurality of bolts;
the upper jig is coupled to the lower jig by bolts with the left jig and the right jig coupled to each other;
four bolts are disposed on an upper part of the upper jig at a predetermined uniform interval and two bolts are disposed on a lower part of the upper jig at a smaller interval to prevent the bolts from being unfastened during the cutting process and a high speed rotation of the jig by a machine tool; and
the bolts for coupling the upper jig and the lower jig are made of a stainless steel to withstand a maximum tension of 100 N.

4. The cutting jig of claim 3 , wherein:
the upper jig has a plurality of adhesive filling grooves to reduce a weight of the jig while supporting the Winston cone reflector which is mounted for processing of an inner surface thereof;
the plurality of adhesive filling grooves is vertically disposed from the upper part to the lower part of both left and right jigs in two rows at a predetermined interval; and
the plurality of adhesive filling grooves is filled with an adhesive to fix a middle part of a cylindrical body of the Winston cone reflector to the jig, thus allowing the cylindrical body and the jig to be integrally rotated without delivering a rotational vibration of the machine tool to the cylindrical body and without deforming the cylindrical body by a cutting force.

Assignees

• Yang Sun Choel
• Chang Ki Soo
• Kim Geon Hee
• Kim Myeong Sang
• Lee Sang Yong
• Korea Basic Science Inst

Inventors

• Yang Sun Choel
• Chang Ki Soo
• Kim Geon Hee
• Kim Myeong Sang
• Lee Sang Yong

Classifications

• B23B2215/64

  Thin walled components · CPC title

• B23B31/021

  Faceplates · CPC title

• B23Q3/062

  adapted for holding workpieces having a special form or being made from a special material · CPC title

• Y10T83/7487

  Means to clamp work · CPC title

• B23B2240/21

  Glued connections · CPC title