Patent US4011049A successfully refreshed from Google Patents.
US4011049A
Expired / Lapsed
US
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Method of and device for holding a cutting insert in the pocket of a tool holder
Assignee: Kennametal Inc
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Filing: 1975-09-19
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Granted: 1977-03-08
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Expires: 1995-09-19
Abstract
Abstract A tool holder having an insert receiving pocket, the pocket having bottom wall and side wall means with an improved arrangement for and method of providing quick indexing or complete changing of an indexable insert. The improved arrangement comprises a pin element with a conical head on one end for engagement with a cutting insert and cooperating elements of a press-on, pry-off connection between the end of the pin and the tool holder. The insert and pin element are detachably fastened together as one unit, and when the insert is in the pocket with the pin clamped to the holder, the unit is held securely in position for cutting engagement with a workpiece.
Inventors
- 👤 James F. McCreery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:23
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1662; B23B2205/00; B23B2205/04; B23B2205/16; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2272; Y10T407/2274; Y10T407/23
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
In a holder for supporting a cutting insert wherein the holder has an insert receiving pocket with a bottom wall and side wall means and a pin element which extends downwardly through a hole in the insert and a hole in the holder to hold the insert securely against the side wall means of the pocket, the improvement which comprises: one end of said pin element adapted to engage the insert from above, cooperating elements of a press-on, pry-off connection, one of said cooperating elements comprising a spring clip located on the holder and the other element located near the other end of the pin element, the axis of the hole in the holder being offset toward the side wall means of the pocket from the axis of the hole in the insert when said insert is abutted against the bottom and side walls of said pocket, the pin element adapted to engage the lateral surfaces of the holes in the insert and the holder and hold said insert against at least the side wall means when said cooperating elements of a press-on, pry-off connection on said holder and pin element are engaged.
Claim 2
Dependent Claim
193 words
In a holder for supporting a cutting insert wherein the holder has an insert receiving pocket with a bottom wall and side wall means and a pin element which extends downwardly through a hole in the insert and a hole in the holder to hold the insert securely against the side wall means of the pocket, the improvement which comprises: one end of said pin element adapted to engage the insert from above, cooperating elements of a press-on, pry-off connection, one of said cooperating elements comprising a spring clip located on the holder and the other element located near the other end of the pin element, the axis of the hole in the holder being offset toward the side wall means of the pocket from the axis of the hole in the insert when said insert is abutted against the bottom and side walls of said pocket, the pin element adapted to engage the lateral surfaces of the holes in the insert and the holder and hold said insert against at least the side wall means when said cooperating elements of a press-on, pry-off connection on said holder and pin element are engaged.
Claim 3
Dependent Claim
30 words
The improvement according to claim 1 in which said one end of said pin element adapted to engage the insert from above has a downward facing conically shaped head portion.
Claim 4
Dependent Claim
49 words
The improvement according to claim 2 in which the cooperating elements of a press-on, pry-off connection comprise said spring clip and a recessed portion near said other end of said pin such that a predetermined downward force on said pin element is provided when said cooperating elements are engaged.
Claim 5
Dependent Claim
38 words
The improvement according to claim 3 in which said means on said tool holder comprises a retaining spring clip mounted on the underside of said tool holder near the lower end of said hole in the tool holder.
Claim 6
Dependent Claim
41 words
The improvement according to claim 2 in which the top face of said insert has a central conical recess formed in said hole of said insert and adapted to engage said downward facing conically shaped head portion of said pin element.
Claim 7
Dependent Claim
44 words
The improvement according to claim 5 in which the pin element, when inserted through the insert, and the cooperating elements of a press-on, pry-off connection are engaged, holding said insert against both the bottom and side walls of said pocket in said tool holder.
References Cited (Backward Citations)
US2230916A
Cited
US3137059A
Cited
US3268978A
Cited
US3341923A
Cited
US3546758A
Cited
US3710468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |