Patent US4576068A successfully refreshed from Google Patents.
US4576068A
Expired / Lapsed
US
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Cam-controlled boring bar
Assignee: ENERGY United States, Department of
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Filing: 1984-02-03
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Granted: 1986-03-18
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Expires: 2004-02-03
Abstract
Abstract A cam-controlled boring bar system (100) includes a first housing (152) which is rotatable about its longitudinal axis (154), and a second housing in the form of a cam-controlled slide (158) which is also rotatable about the axis (154) as well as being translatable therealong. A tool-holder (180) is mounted within the slide (158) for holding a single point cutting tool. Slide (158) has a rectangular configuration and is disposed within a rectangularly configured portion of the first housing (152). Arcuate cam slots (192) are defined within a side plate (172) of the housing (152), while cam followers (194) are mounted upon the cam slide (158) for cooperative engagement with the cam slots (192). In this manner, as the housing (152) and slide (158) rotate, and as the slide (158) also translates, a through-bore (14) having an hourglass configuration will be formed within a workpiece (16) which may be, for example, a nuclear reactor steam generator tube support plate.
Inventors
- 👤 Raymond H. Glatthorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:33
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/105; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03432; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T408/8598; Y10T82/00; Y10T82/12; Y10T82/125; Y10T82/13; Y10T82/135
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
152 words
Boring apparatus for generating a bore within a workpiece, comprising: a first housing including means for attachment of said first housing to a first means for rotating said first housing about a predetermined axis; a second housing, disposed within said first housing and having a cutting tool mounted thereon, including means for attachment of said second housing to a second means for rotating said second housing about, and translating said second housing in an axial direction; means defined between said first and second housings supporting said second housing for axial and transverse movement; and means defined between said first and second housings controlling the transverse movement of said second housing and said cutting tool relative to said predetermined axis and said first housing in response to said axial movement of said second housing so as to generate a bore within said workpiece having a predetermined configuration as determined by said controlling means.
Claim 2
Dependent Claim
152 words
Boring apparatus for generating a bore within a workpiece, comprising: a first housing including means for attachment of said first housing to a first means for rotating said first housing about a predetermined axis; a second housing, disposed within said first housing and having a cutting tool mounted thereon, including means for attachment of said second housing to a second means for rotating said second housing about, and translating said second housing in an axial direction; means defined between said first and second housings supporting said second housing for axial and transverse movement; and means defined between said first and second housings controlling the transverse movement of said second housing and said cutting tool relative to said predetermined axis and said first housing in response to said axial movement of said second housing so as to generate a bore within said workpiece having a predetermined configuration as determined by said controlling means.
Claim 3
Dependent Claim
30 words
Boring apparatus as set forth in claim 1, wherein: said first means to which said first housing is to be attached is a face mill spindle of a boring mill.
Claim 4
Dependent Claim
29 words
Boring apparatus as set forth in claim 1, wherein: said second means to which said second housing is to be attached is a quill spindle of a boring mill.
Claim 5
Dependent Claim
49 words
Boring apparatus as set forth in claim 1, wherein said controlling means comprises: at least one cam slot defined within said first housing; and at least one cam follower mounted within said second housing for operative engagement with said at least one cam slot defined within said first housing.
Claim 6
Dependent Claim
78 words
Boring apparatus as set forth in claim 4, wherein: said at least one cam slot has an arcuate configuration, whereby as said second housing and said cutting tool mounted thereon rotate, and axially move so as to generate said bore within said workpiece, said at least one arcuately configured cam slot will cause said at least one cam follower and said second housing-cutting tool assembly to undergo transverse radial movements so as to generate an hourglass configured bore.
Claim 7
Dependent Claim
32 words
Boring apparatus as set forth in claim 4, wherein: said first housing has two axially spaced cam slots defined therein; and said second housing has two axially spaced cam followers mounted therein.
Claim 8
Dependent Claim
26 words
Boring apparatus as set forth in claim 4, wherein: said first housing has a substantially rectangular configuration; and said second housing has a substantially rectangular configuration.
Claim 9
Dependent Claim
64 words
Boring apparatus as set forth in claim 7, wherein: at least one side of said rectangularly configured first housing is defined by means of a removable plate; and said at least one cam slot is defined within said at least one removable plate, whereby different bore configurations can be generated by means of different cam slot plates having differently configured cam slots defined therein.
Claim 10
Dependent Claim
23 words
Boring apparatus as set forth in claim 1, further comprising: means for adjusting the disposition of said cutting tool within said second housing.
Claim 11
Dependent Claim
47 words
Boring apparatus as set forth in claim 9, wherein said adjustable means comprises: a tool holder mounted upon said second housing for holding said cutting tool therewithin; and a pair of diametrically opposed jack screws mounted within said second housing and operatively engaged with said tool holder.
Claim 12
Dependent Claim
59 words
Boring apparatus as set forth in claim 3, wherein said means for attachment of said second housing to said quill spindle comprises: a milling machine taper adaptor; elongated slot means defined within said milling machine taper adaptor; and transversely extending pins mounted upon said second housing and operatively engaged with said elongated slots of said milling machine taper adaptor.
Claim 13
Dependent Claim
20 words
Boring apparatus as set forth in claim 1, wherein: both of said first and second housings have substantially rectangular configurations.
Claim 14
Dependent Claim
39 words
Boring apparatus as set forth in claim 12, further comprising: gap means defined between said first and second housings for permitting said second housing to move transversely relative to said first housing under the influence of said controlling means.
Claim 15
Dependent Claim
167 words
Boring apparatus for generating a bore within a workpiece, comprising: a first housing including means for attachment of said first housing to a first means for rotating said first housing about a predetermined axis; a second housing, disposed within said first housing and having a cutting tool mounted thereon, including means for attachment of said second housing to a second means for rotating said second housing about said predetermined axis, and for translating said second housing in an axial direction relative to said first housing; means defined between said first and second housings supporting said second housing for axial and transverse movement; and means defined between said first and second housings for controlling the transverse movement of said second housing and said cutting tool relative to said predetermined axis and said first housing in response to said axial movement of said second housing relative to said first housing so as to generate a bore within said workpiece having a predetermined configuration as determined by said controlling means.
Claim 16
Dependent Claim
167 words
Boring apparatus for generating a bore within a workpiece, comprising: a first housing including means for attachment of said first housing to a first means for rotating said first housing about a predetermined axis; a second housing, disposed within said first housing and having a cutting tool mounted thereon, including means for attachment of said second housing to a second means for rotating said second housing about said predetermined axis, and for translating said second housing in an axial direction relative to said first housing; means defined between said first and second housings supporting said second housing for axial and transverse movement; and means defined between said first and second housings for controlling the transverse movement of said second housing and said cutting tool relative to said predetermined axis and said first housing in response to said axial movement of said second housing relative to said first housing so as to generate a bore within said workpiece having a predetermined configuration as determined by said controlling means.
Claim 17
Dependent Claim
49 words
Boring apparatus as set forth in claim 14, wherein said controlling means comprises: at least one cam slot defined within said first housing; and at least one cam follower mounted within said second housing for operative engagement with said at least one cam slot defined within said first housing.
Claim 18
Dependent Claim
117 words
Boring apparatus as set forth in claim 15, wherein: said at least one cam slot has an arcuate configuration, whereby as said second housing and said cutting tool mounted thereon rotate and axially move so as to generate said bore within said workpiece, said at least one arcuately configured cam slot will cause said at least one cam follower and said second housing-cutting tool assembly to undergo transverse radial movements so as to generate said bore within said workpiece wherein the internal annular sidewall of said bore is continuously arcuate from one surface of said workpiece to another surface of said workpiece as defined by means of a predetermined radius externally disposed with respect to said bore.
Claim 19
Dependent Claim
166 words
Boring apparatus for generating a bore within a workpiece, comprising: a first housing including means for attachment of said first housing to a first means for rotating said first housing about a predetermined axis; a second housing, disposed within said first housing and having a cutting tool mounted thereon, including means for attachment of said second housing to a second means for rotating said second housing, and translating said second housing in an axial direction, means defined between said first and second housings supporting said second housing for axial and transverse movement; and relatively transversely moveable means defined between said first and second housings for causing corresponding transverse movement of said second housing and said cutting tool relative to said predetermined axis and said first housing in response to said axial movement of said second housing so as to generate a bore within said workpiece having a predetermined configuration as determined by said means causing said corresponding movement of said second housing and said cutting tool.
Claim 20
Dependent Claim
166 words
Boring apparatus for generating a bore within a workpiece, comprising: a first housing including means for attachment of said first housing to a first means for rotating said first housing about a predetermined axis; a second housing, disposed within said first housing and having a cutting tool mounted thereon, including means for attachment of said second housing to a second means for rotating said second housing, and translating said second housing in an axial direction, means defined between said first and second housings supporting said second housing for axial and transverse movement; and relatively transversely moveable means defined between said first and second housings for causing corresponding transverse movement of said second housing and said cutting tool relative to said predetermined axis and said first housing in response to said axial movement of said second housing so as to generate a bore within said workpiece having a predetermined configuration as determined by said means causing said corresponding movement of said second housing and said cutting tool.
Claim 21
Dependent Claim
61 words
Boring apparatus as set forth in claim 17, wherein said means for causing said corresponding movement of said second housing and said cutting tool comprises: at least one cam slot defined within said first housing; and at least one cam follower mounted within said second housing for operative engagement with said at least one cam slot defined within said first housing.
Claim 22
Dependent Claim
28 words
Boring apparatus as set forth in claim 18, wherein: said at least one cam slot is arcuate in its configuration whereby said generated bore has an hourglass configuration.
Claim 23
Dependent Claim
26 words
Boring apparatus as set forth in claim 19, wherein: the length of said cam slot defines the length of said hourglass portion of said generated bore.
References Cited (Backward Citations)
US2382571A
Cited
US2804786A
Cited
US3228265A
Cited
US3813969A
Cited
US3854839A
Cited
SU611733A1
Cited
US4354305A
Cited
US4357846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |