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US3877329A Expired / Lapsed US ⏱️ 0.0 years remaining

Tool support with tool slide vertically displaceable therein, with a tool exchanging device associated with said tool slide

Assignee: Schiess AG
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Filing: 1973-06-20
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Granted: 1975-04-15
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Expires: 1993-06-20
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Abstract

Abstract A tool support with a tool slide vertically movable in the support, in which slide there is rotatably and axially displaceably mounted a spindle bar having its upper end engaged by a rotary drive and by a displacement drive, whereas the lower end of the spindle bar has disengageably connected thereto a tool head which is equipped with exchangeably arranged rotatable tools. The tool head is adapted to be locked to the lower end of the tool slide in certain pivoted positions of the tool head. The tool support according to the invention is characterized primarily in that through the spindle bar in the longitudinal direction thereof, there extends with sliding play, a pipe which is connected to a pressure conduit with a pneumatic or hydraulic pressure medium. This pipe leads into the tool head which is displaceable relative to the pipe end. Depending on the respective pivoted position of the tool head, the said pipe is, through bores, in communication with at least one cylinder bore in which a clamping bolt pulled in by spring force is located. This clamping bolt has a clamping jaw for chucking a turning tool arranged in a recess of the tool head and for releasing the turning tool in response to an axial displacement of the chucking bolt toward the outside against the spring force by a pressure medium passing into the cylinder bore.

Inventors

  • 👤 Fritz Noa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:40
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/26; B23B29/00; B23B29/04; B23B29/12; B23B31/261; B23B31/268; B23Q; B23Q3/00; B23Q3/155; B23Q3/15506; B23Q3/1552; B23Q3/15553; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/37; Y10T483/00; Y10T483/17; Y10T483/1702; Y10T483/1726; Y10T82/00; Y10T82/25; Y10T82/2511; Y10T82/2531; Y10T82/2541

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 205 words
In a machine tool having a frame, spindle support means moveable vertically and transversely in said frame, a spindle in said support means comprising a spindle bar rotatable and axially moveable in said spindle, a tool head detachably connected to said spindle bar at the lower end and having at least one notch for receiving a tool, said tool head being rotatable on the spindle and being adapted to be locked to the spindle in rotated positions, a conduit extending axially through said spindle bar and adapted at the upper end to receive pressure fluid, said conduit at the lower end sealingly engaging a recess formed in the tool head, a clamp member in said notch for clamping a tool therein, cylinder bore means in the tool head, piston means connected to the clamp member and extending into said cylinder bore means, spring means acting on said piston means and urging said clamp member in tool clamping directiOn, and channel means in said tool head operable in at least one rotated position of the tool head on the spindle to communicate said cylinder bores with said recess whereby a supply of pressure fluid to said conduit will move said clamp member in tool releasing direction.
Claim 2
Dependent Claim 205 words
In a machine tool having a frame, spindle support means moveable vertically and transversely in said frame, a spindle in said support means comprising a spindle bar rotatable and axially moveable in said spindle, a tool head detachably connected to said spindle bar at the lower end and having at least one notch for receiving a tool, said tool head being rotatable on the spindle and being adapted to be locked to the spindle in rotated positions, a conduit extending axially through said spindle bar and adapted at the upper end to receive pressure fluid, said conduit at the lower end sealingly engaging a recess formed in the tool head, a clamp member in said notch for clamping a tool therein, cylinder bore means in the tool head, piston means connected to the clamp member and extending into said cylinder bore means, spring means acting on said piston means and urging said clamp member in tool clamping directiOn, and channel means in said tool head operable in at least one rotated position of the tool head on the spindle to communicate said cylinder bores with said recess whereby a supply of pressure fluid to said conduit will move said clamp member in tool releasing direction.
Claim 3
Dependent Claim 68 words
A machine tool according to claim 1 in which said tool head is moved in rotation and in the axial direction by said spindle bar, control switches for controlling the rotation of said tool head and the axial displacement thereof and for controlling the supply of pressure fluid to and the exhausting fluid from said conduit, and cam elements on said spindle bar coating with said control switches.
Claim 4
Dependent Claim 27 words
A machine tool according to claim 2 in which said switches and cam elements coact in response to both rotary and axial movement of said spindle bar.
Claim 5
Dependent Claim 85 words
A machine tool according to claim 1 in which said spindle bar is threaded at the upper end, a nut on the upper end of the spindle bar, a motor for driving said nut in rotation, cooperating elements of abutment means on said nut and spindle bar to limit relative axial movement of said nut and spindle bar, and detent means acting between said spindle bar and spindle for releasably holding said spindle bar in a predetermined rotated position until said abutment means elements abut.
Claim 6
Dependent Claim 37 words
A machine tool according to claim 1 which includes a tool magazine, tools in the magazine, locating pins in the magazine and tool head for engagement with the tools, said tools having holes to receive said pins.

References Cited (Backward Citations)

US3316786A Cited
US3186085A Cited
US3354761A Cited
US3466739A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-04-14 1978-10-14 1979-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-04-14 1982-10-14 1983-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-04-14 1986-10-14 1987-04-15 $7700.00 Window Closed / Lapsed

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