US3599996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toolholder for a machine tool
Assignee: Individual
•
Filing: 1969-06-25
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Granted: 1971-08-17
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Expires: 1989-06-25
Abstract
Abstract A toolholder for machine tools such as boring mills and the like to enable quick and ready interchange of tool implements therefor while the machine tool is in operation. The holder includes a rotatable spindle adapted to be continuously driven by such machine tool, and it is provided with an axially extending passage open at one end for receipt of a tool implement therein. Retainer structure selectively movable between tool-confining and tool-release positions is controlled by an operator element rotatably mounted upon the spindle and slidably displaceable relative thereto to control the position of the retainer structure. A driver mounted within the spindle passage is forced to rotate with the spindle but is selectively movable relative thereto under the control of the operator between an operative position in which it drivingly engages the tool implement and an inoperative position released therefrom. The operator element thereby controls both the retainer structure and driver, and it can be moved between its open and closed positions to permit removal and replacement of tool implements with the machine tool in operation.
Inventors
- 👤 Donald G Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/18; Y; Y10; Y10S; Y10S279/00; Y10S279/904; Y10T; Y10T279/00; Y10T279/17; Y10T279/17231; Y10T279/17239; Y10T279/17256; Y10T279/17761; Y10T279/17769; Y10T279/17777; Y10T279/17863
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
233 words
A tool-implement holder for a machine tool or the like, comprising a spindle provided with an axially extending passage open at one end for receipt therein of a tool implement and adapted to be rotatably driven by such machine, a tool-implement driver mounted within said passage and being axially displaceable with respect thereto between an operative position of engagement with such tool implement to rotate the same and an inoperative position disengaged therefrom, connector structure constraining said driver against rotation relative to said spindle without significantly inhibiting such relative axial displacements therebetween, retainer structure supported by said spindle for selective movement between retain and release positions respectively confining such tool implement within said passage and affording insertion thereinto and removal of such tool implement therefrom, and an operator element operatively engaged with and controlling the positions of said driver and said retainer structure and being rotatably supported by said spindle and axially movable with respect thereto between closed and open positions respectively corresponding to the operative and inoperative positions of said driver and to retain and release positions of said retainer structure, said operator element upon insertion of a tool implement being movable to first move said retainer structure into retain position prior to moving said driver into operative position and upon removal of a tool implement first moving said driver into inoperative position prior to moving said retainer structure into release position.
Claim 2
Dependent Claim
233 words
A tool-implement holder for a machine tool or the like, comprising a spindle provided with an axially extending passage open at one end for receipt therein of a tool implement and adapted to be rotatably driven by such machine, a tool-implement driver mounted within said passage and being axially displaceable with respect thereto between an operative position of engagement with such tool implement to rotate the same and an inoperative position disengaged therefrom, connector structure constraining said driver against rotation relative to said spindle without significantly inhibiting such relative axial displacements therebetween, retainer structure supported by said spindle for selective movement between retain and release positions respectively confining such tool implement within said passage and affording insertion thereinto and removal of such tool implement therefrom, and an operator element operatively engaged with and controlling the positions of said driver and said retainer structure and being rotatably supported by said spindle and axially movable with respect thereto between closed and open positions respectively corresponding to the operative and inoperative positions of said driver and to retain and release positions of said retainer structure, said operator element upon insertion of a tool implement being movable to first move said retainer structure into retain position prior to moving said driver into operative position and upon removal of a tool implement first moving said driver into inoperative position prior to moving said retainer structure into release position.
Claim 3
Dependent Claim
53 words
The holder of claim 1 in which said operator and retainer structure have cooperative cam surfaces engageable with each other for moving said retainer structure into the retain position thereof upon displacement of said operator into its closed position, and further comprising spring means biasing said retainer structure toward the release position thereof.
Claim 4
Dependent Claim
68 words
The holder of claim 1 in which said operator is coaxially circumjacent said spindle and is provided along its inner surface with an annular channel, and in which said connector structure includes a plurality of radially extending pins projecting into said channel, said spindle being provided with a plurality of axially extending slots respectively passing said pins therethrough to accommodate axial displacements thereof with said operator and driver.
Claim 5
Dependent Claim
21 words
The holder of claim 1 in which said operator engages said retainer structure to effect such control over the position thereof.
Claim 6
Dependent Claim
115 words
The holder of claim 4 in which said operator and retainer structure have cooperative cam surfaces engageable with each other for moving said retainer structure into the retain position thereof upon displacement of said operator into its closed position, further comprising spring means biasing said retainer structure toward the release position thereof, in which said operator is coaxially circumjacent said spindle and is provided along its inner surface with an annular channel, and in which said connector structure includes a plurality of radially extending pins projecting into said channel, said spindle being provided with a plurality of axially extending slots respectively passing said pins therethrough to accommodate axial displacements thereof with said operator and drivEr.
Claim 7
Dependent Claim
45 words
The holder of claim 1 in which said driver is equipped with a high-friction component axially displaceable with respect thereto under the control of said operator so as to engage such tool implement and impart driving torque thereto in the operative position of said driver.
Claim 8
Dependent Claim
47 words
The holder of claim 6 in which said driver is provided with an axially extending recess, in which said high-friction component is a plunger reciprocable within said recess, and in which said operator is connected with said high-friction component so as to effect the aforesaid control thereof.
Claim 9
Dependent Claim
54 words
The holder of claim 7 in which the connection of said operator with said high-friction component effects disengagement thereof with such tool implement prior to displacement of said driver toward the inoperative position thereof and effects engagement of said component with such tool implement subsequent to displacement of said driver into its operative position.
Claim 10
Dependent Claim
91 words
The holder of claim 8 in which said operator is coaxially circumjacent said spindle and is provided along its inner surface with an annular channel, and further comprising a pin connected with said component and extending radially outwardly therefrom into said channel, said driver being provided with an axially extending slot affording limited axial displacement of said component and pin relative thereto, said spindle having an axially extending slot passing said pin therethrough and affording movement thereof with said operator and driver between the operative and inoperative positions of the latter.
Claim 11
Dependent Claim
25 words
The holder of claim 9 and further comprising spring structure connected with said spindle and driver to bias the latter toward the operative position thereof.
Claim 12
Dependent Claim
80 words
The holder of claim 10 in which said operator is provided with a second circumferential channel in the inner surface thereof, and in which said connector structure comprises a plurality of angularly spaced radially extending pins connected with said driver and projecting into said second channel, said spindle being provided with a plurality of additional axially extending slots respectively passing said pins therethrough to accommodate movement of said operator and driver between the operative and inoperative positions of the latter.
Claim 13
Dependent Claim
105 words
The holder of claim 1 and further comprising a tool implement in combination therewith, said tool implement having at the end thereof insertable into said passage an annular configuration and being provided thereat with an outwardly opening circumferential channel adjacent said retainer structure when said tool implement is fully inserted into said passage, said retainer structure being provided with angularly spaced latches that project into said channel to confine said tool implement as aforesaid when said retainer structure is in the retain position thereof, and said driver and tool implement being provided with cooperative components interengageable when said driver is in the operative position thereof.
Claim 14
Dependent Claim
62 words
The holder of claim 12 in which said driver is equipped with a high-friction component axially displaceable with respect thereto under the control of said operator so as to engage said tool implement and impart driving torque thereto in the operative position of said driver, said high-friction component comprising one of the aforesaid cooperative components provided by said driver and tool implement.
Claim 15
Dependent Claim
54 words
The holder of claim 13 in which the connection of said operator with said high-friction component effects disengagement thereof with such tool implement prior to displacement of said driver toward the inoperative position thereof and effects engagement of said component with such tool implement subsequent to displacement of said driver into its operative position.
Claim 16
Dependent Claim
85 words
The holder of claim 14 in which said operator is connected with said driver to effect such control over the position thereof, in which said operator is coaxially circumjacent said spindle and is provided along its inner surface with an annular chanNel, and in which said connector structure includes a plurality of radially extending pins projecting into said channel, said spindle being provided with a plurality of axially extending slots respectively passing said pins therethrough to accommodate axial displacements thereof with said operator and driver.
Claim 17
Dependent Claim
69 words
The holder of claim 15 in which said operator engages said retainer structure to effect such control over the position thereof, in which said operator and retainer structure have cooperative cam surfaces engageable with each other for moving said retainer structure into the retain position thereof upon displacement of said operator into its closed position, and further comprising spring means biasing said retainer structure toward the release position thereof.
Claim 18
Dependent Claim
126 words
The holder of claim 16 in which said driver is provided with an axially extending recess, in which said high-friction component is a plunger reciprocable within said recess, in which said operator is connected with said high-friction component so as to effect the aforesaid control thereof, in which said operator is provided along its inner surface with an annular channel, and further comprising a pin connected with said component and extending radially outwardly therefrom into said channel, said driver being provided with an axially extending slot affording limited axial displacement of said component and pin relative thereto, said spindle having an axially extending slot passing said pin therethrough and affording movement thereof with said operator and driver between the operative and inoperative positions of the latter.
Claim 19
Dependent Claim
25 words
The holder of claim 17 and further comprising spring structure connected with said spindle and driver to bias the latter toward the operative position thereof.
Claim 20
Dependent Claim
31 words
The holder of claim 12 in which said cooperative components comprise meshing teeth respectively provided along the inner driver-facing surface of said tool implement and lower implement-facing surface of said driver.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |