US3813969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool holder for boring and turning polygonal shaped surfaces
Assignee: Individual
•
Filing: 1971-05-11
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Granted: 1974-06-04
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Expires: 1991-05-11
Abstract
Abstract A polygonal box tool for use with lathes or other machine tools of the character wherein the work is rotated about its axis. The box or housing is provided with a holder for a cutting tool, movement of the holder transversely of the box being controlled by a cam member journaled in the body portion of the box. The cam is driven by the lathe spindle, and is formed with a groove of contour to generate the desired shape on or in the workpiece. Variation of the size of the polygonal work surface is accomplished by means of an adjustable cam follower pin fitted into the groove of the cam. As the cam revolves, it imparts a reciprocatory motion to the tool holder, with respect to the center of the work.
Inventors
- 👤 H Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:46
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B23Q35/103; Y; Y10; Y10T; Y10T82/00; Y10T82/12; Y10T82/122; Y10T82/13; Y10T82/135
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
247 words
A tool holder for use in forming surfaces of polygonal shape in cross-section on or in a workpiece, a cylindrically shaped housing (6) being driven by a chuck jaw (38), a cutting tool holder (9) supported in the housing, a polygonal shaped cam member (16) rotatably mounted in the housing and having a continuous groove (15) along a surface of said cam, one face of the cam groove being employed for boring and the other face for turning, cam follower means (17) having a pin member (14) in which one end portion is seated in the groove (15), an adjustable cam follower (22) having an adjustable slide pin (21) having an end portion being slidably seated in an elongated slot (23), the opposite end portion of said cam follower pin member (14) being hingedly secured (17,18) to the housing, a transverse slide (20) containing said elongated slot operatively connected to the cam follower means including the transverse slide (20) having said adjustable slide pin (21) supported on the cam follower means (22) and being reciprocated transversely of the tool holder when rotated, the cam follower pin (14) and the adjustable slide pin (21) being maintained in contact with the surface of the cam member and the elongated slot surface of the adjustable slide (20), respectively, said adjustable cam follower means (22) transmitting a proportional part of the amplitude of movement of the cam member (16) to the cutting tool holder to generate a surface of polygonal shape.
Claim 2
Dependent Claim
247 words
A tool holder for use in forming surfaces of polygonal shape in cross-section on or in a workpiece, a cylindrically shaped housing (6) being driven by a chuck jaw (38), a cutting tool holder (9) supported in the housing, a polygonal shaped cam member (16) rotatably mounted in the housing and having a continuous groove (15) along a surface of said cam, one face of the cam groove being employed for boring and the other face for turning, cam follower means (17) having a pin member (14) in which one end portion is seated in the groove (15), an adjustable cam follower (22) having an adjustable slide pin (21) having an end portion being slidably seated in an elongated slot (23), the opposite end portion of said cam follower pin member (14) being hingedly secured (17,18) to the housing, a transverse slide (20) containing said elongated slot operatively connected to the cam follower means including the transverse slide (20) having said adjustable slide pin (21) supported on the cam follower means (22) and being reciprocated transversely of the tool holder when rotated, the cam follower pin (14) and the adjustable slide pin (21) being maintained in contact with the surface of the cam member and the elongated slot surface of the adjustable slide (20), respectively, said adjustable cam follower means (22) transmitting a proportional part of the amplitude of movement of the cam member (16) to the cutting tool holder to generate a surface of polygonal shape.
Claim 3
Dependent Claim
29 words
In a tool holder in accordance with claim 1, wherein the transverse slide is formed with an elongated slot, and the adjustable slide pin is seated in the slot.
Claim 4
Dependent Claim
30 words
In a tool holder in accordance with claim 1, wherein the lathe chuck jaw is in driving engagement with an abutment secured to the external housing of the box unit.
Claim 5
Dependent Claim
59 words
In a tool holder in accordance with claim 1, wherein means are provided for maintaining the cam follower pin in contact with the surface of the cam, comprising a light spring having one end attached to a hanger carried by the transverse slide, the opposite end of the spring being connected to a hanger supported on the slide housing.
Claim 6
Dependent Claim
36 words
In a tool holder according to claim 1, wherein the means for maintaining the cam follower in contact with the surface of the cam, when turning a polygonal shape on a workpiece comprises a compression spring.
Claim 7
Dependent Claim
51 words
In a tool holder according to claim 1, wherein the tool holder housing is formed with an access opening in a band cover fitted over the body portion in telescopic relationship therewith, and adapted to be brought into register with a corresponding opening formed in the body portion of the holder.
Claim 8
Dependent Claim
26 words
In a tool holder according to claim 1, wherein means are provided for determining the size of the polygonal surface to be formed on the workpiece.
Claim 9
Dependent Claim
37 words
In a tool holder according to claim 1, wherein a brake means is provided to produce dragging contact against the surface of the box housing to maintain the drive abutment in engagement with the lathe chuck jaw.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |