Browse Prior Art Database

Quill Supports

IP.com Disclosure Number: IPCOM000121399D
Original Publication Date: 1991-Aug-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 1 page(s) / 47K

Publishing Venue

IBM

Related People

Emerick, AJ: AUTHOR [+2]

Abstract

This disclosure describes a method of supporting and thus strengthening the punch in a punch and die set. Fig. 1 shows a typical tool set similar to tooling used in substrate pinning applications. The die (1) and punch (2) form a tool set which more vertically in relationship to each other as shown. To attain full eject of the product from the die the quill (2) must be able to move upward (x). This means (y) dimension must be equal or greater than (x) for this to be possible. In a situation where the eject length (x) is long and the punch diameter is small, problems with buckling (R) result when a force (F) is applied as during eject of part from die. In both Figs. 1 and 2 the base support to the quills is shown as (6), the quill retainer as (4), and the quill foot as (6).

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Quill Supports

      This disclosure describes a method of supporting and thus
strengthening the punch in a punch and die set.  Fig. 1 shows a
typical tool set similar to tooling used in substrate pinning
applications.  The die (1) and punch (2) form a tool set which more
vertically in relationship to each other as shown.  To attain full
eject of the product from the die the quill (2) must be able to move
upward (x). This means (y) dimension must be equal or greater than
(x) for this to be possible.  In a situation where the eject length
(x) is long and the punch diameter is small, problems with buckling
(R) result when a force (F) is applied as during eject of part from
die.  In both Figs. 1 and 2 the base support to the quills is shown
as (6), the quill retainer as (4), and the quill foot as (6).  The
buckling causes quill bending, quill breakage and dimensional
instability (6).

      In the proposed system, a support plate (6) is located along
the quill, thus dividing the unsupported quill length into two or
more portions, each being stronger and thus allowing less buckling
(R1) than the previous case.  The overall length of the quill is
increased by the support thickness (T) to accomplish the same eject
stroke.  (A) and (B) are maintained during the eject stroke by method
such as opposing springs.  Multiple plates dividing the quill into
more portions is possible, offering increased support as necessary.

      Disclosed anonymously.