US4020545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatic tool changing in a lathe
Assignee: DSO ZMM
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Filing: 1974-02-25
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Granted: 1977-05-03
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Expires: 1994-02-25
Abstract
Abstract Apparatus for automatic tool changing, such apparatus being situated between the lathe rest and the stationary tool magazine of the lathe. The total changing apparatus contains a basic support frame which can move parallel to the axis of the lathe spindle; a transport unit for following cross-traverse on the support frame, a two-seat tool magazine, and a mechanism for straight-lined translation of the tool units. The basic support frame contains a brace structure and a beam. The brace structure extends along a guideway towards the body of the lathe, while the beam acts as a guideway for the transport unit. The two-seat tool magazine includes a slide fixed to the transport unit; it can move along the beam of the support frame together with the transport unit, as well as independently. It also contains two seats for tool units, rigidly fastened to the slide.
Inventors
- 👤 Ivan Assenov Slavinski
- 👤 Todor Dimitrov Angelov
- 👤 Dmitri Dmitrievich Vukolov
- 👤 Eduard Todorov Burgudjiev
- 👤 Mihail Dimitrov Komitovski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:01
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/155; B23Q3/1552; B23Q3/1554; B23Q3/15513; B23Q2003/155404; B23Q2003/155407; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49817; Y10T29/49819; Y10T483/00; Y10T483/10; Y10T483/17; Y10T483/1702; Y10T483/1714
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
259 words
A lathe including device for automatic tool changing said lathe having a spindle with a horizontal axis, the tools of the lathe being fixed in tool holders and together with the tool holders forming tool units, the lathe being supplied with a first tool magazine located stationary relative to said horizontal axis, the lathe having a tool rest on which the changeable tool units are fastened in a one-seat mounting element, and means for fixing a tool unit on said mounting element, the tool changing device comprising a support frame mounted for reciprocation between the tool rest and the first magazine of the lathe parallel to the spindle axis, the support frame having a vertical beam extending transverse to the spindle axis, the improvement wherein the device further comprises a first slide supported for non-rotatable vertical reciprocation on the beam toward and away from the spindle axis, a second slide supported for non-rotatable vertical reciprocation on the beam relative to the reciprocation of the first slide, means for reciprocating the second slide with respect to the first slide, a two-seat magazine for the tool units fixedly mounted on the second slide, and means carried by the first slide for linearly translating tool units along the spindle axis between the first and second magazines and between the second magazine and the fixing means on the tool rest of the lathe, the translating means including means for horizontally introducing the tool units into and horizontally withdrawing the tool units from the fixing means, the first magazine, and the second magazine, respectively.
Claim 2
Dependent Claim
259 words
A lathe including device for automatic tool changing said lathe having a spindle with a horizontal axis, the tools of the lathe being fixed in tool holders and together with the tool holders forming tool units, the lathe being supplied with a first tool magazine located stationary relative to said horizontal axis, the lathe having a tool rest on which the changeable tool units are fastened in a one-seat mounting element, and means for fixing a tool unit on said mounting element, the tool changing device comprising a support frame mounted for reciprocation between the tool rest and the first magazine of the lathe parallel to the spindle axis, the support frame having a vertical beam extending transverse to the spindle axis, the improvement wherein the device further comprises a first slide supported for non-rotatable vertical reciprocation on the beam toward and away from the spindle axis, a second slide supported for non-rotatable vertical reciprocation on the beam relative to the reciprocation of the first slide, means for reciprocating the second slide with respect to the first slide, a two-seat magazine for the tool units fixedly mounted on the second slide, and means carried by the first slide for linearly translating tool units along the spindle axis between the first and second magazines and between the second magazine and the fixing means on the tool rest of the lathe, the translating means including means for horizontally introducing the tool units into and horizontally withdrawing the tool units from the fixing means, the first magazine, and the second magazine, respectively.
Claim 3
Dependent Claim
64 words
The lathe of claim 1, wherein the translating means comprises an arm pivotally mounted at one end on the first slide, and a tool holder engaging finger movably attached to the other end of said arm, the finger and tool holder having mating interlocking formations whereby the arm in its acting through the finger can both push and pull the tool in its translation.
Claim 4
Dependent Claim
65 words
The lathe of claim 2, comprising a power transmission connected between the arm and the finger, said power transmission being so constructed and arranged that, upon the rotation of the arm from one extreme position thereof to the other, the finger is moved in synchronism therewith but rotates in the opposite direction about its axis of rotation from the direction of rotation of the arm.
Claim 5
Dependent Claim
88 words
The lathe of claim 3, comprising power means for oscillating the arm about its axis, and wherein the power transmission between the arm and the finger comprises a stationary sprocket mounted upon the axis of oscillation of the arm, a second sprocket mounted on the central pin of a crank arm journalled on the outer end of the arm, the finger being mounted eccentrically on said crank arm, and a chain tightly entrained over said two sprockets, whereby oscillation of the arm causes synchronized oscillation of the finger.
Claim 6
Dependent Claim
58 words
The lathe of claim 2, comprising means for oscillating the arm including a shaft upon which the arm is mounted and about the axis of which the arm oscillates, a pinion coaxial of the arm and affixed thereto, opposed parallel racks in mesh with opposite sides of said pinion, and hydraulic cylinder means for selectively rotating said pinion.
Claim 7
Dependent Claim
53 words
The lathe of claim 1, comprising guide means affixed to the respective ends of said column, said guide means cooperating with guideways on the body of the lathe, and a double-acting hydraulic cylinder provided with a controlling valve for reciprocating the support frame transverse to the axis of the spindle of the lathe.
Claim 8
Dependent Claim
76 words
The lathe of claim 1, comprising an elongated prismatic key member affixed to the first slide, said key member having a cut-out portion intermediate its length, the key member cooperating with the tool holders for preventing movement of the tool unit in the guideways of the two-seat tool magazine in the extreme positions of said magazine, while permitting movement of the tool units along the guides when the two-seat tool magazine is in its intermediate position.
Claim 9
Independent Claim
421 words
A method for automatic tool changing in a lathe wherein the tools are mounted in tool holders, the lathe having a work holding spindle with a horizontal axis, a tool rest adjacent the spindle for operatively clamping a tool holder, a first tool magazine having a plurality of tool holder compartments located stationary relative to the horizontal axis, a support frame movable between the tool rest and the first magazine parallel to the horizontal axis, first and second slides mounted on the support frame for transverse movement thereon with respect to the horizontal axis, a two-seat second tool magazine mounted on the first slide, and pivotable arm having a tool holder engaging finger mounted on the second slide, the method comprising the step of positioning the support frame adjacent the first tool magazine, positioning the second slide on the support frame to line up one of the seats of the second tool magazine with a compartment of the first magazine, positioning the first slide on the support frame to engage the tool engaging finger with a tool holder in the compartment of the first magazine, pivoting the arm and simultaneously moving the tool engaging finger with respect to the arm in such a manner that the free end of the tool engaging finger performs a substantially rectilinear movement along the horizontal axis, thereby to remove a tool holder from said compartment and inserting it into said seat, positioning the frame adjacent the tool rest, positioning the second slide on the frame to line up the empty seat on the second tool magazine with the tool rest, positioning the first slide on the frame to align the tool engaging finger with a tool holder in the tool rest, positioning the arm and simultaneously moving the tool engaging finger with respect to the arm in such a manner that the free end of the tool engaging finger performs a substantially rectilinear movement aong the horizontal axis, thereby to remove a tool holder from the tool rest into the empty seat of the second tool magazine, positioning the second slide to line up the other seat of the tool magazine with the tool rest, pivoting the arm and simultaneously moving the tool engaging finger with respect to the arm in such a manner that the free end of the tool engaging finger performs a substantially rectilinear movement along the horizontal axis, thereby to insert a tool holder from said other seat into the tool rest, and positioning the frame adjacent the first tool magazine.
Claim 10
Independent Claim
421 words
A method for automatic tool changing in a lathe wherein the tools are mounted in tool holders, the lathe having a work holding spindle with a horizontal axis, a tool rest adjacent the spindle for operatively clamping a tool holder, a first tool magazine having a plurality of tool holder compartments located stationary relative to the horizontal axis, a support frame movable between the tool rest and the first magazine parallel to the horizontal axis, first and second slides mounted on the support frame for transverse movement thereon with respect to the horizontal axis, a two-seat second tool magazine mounted on the first slide, and pivotable arm having a tool holder engaging finger mounted on the second slide, the method comprising the step of positioning the support frame adjacent the first tool magazine, positioning the second slide on the support frame to line up one of the seats of the second tool magazine with a compartment of the first magazine, positioning the first slide on the support frame to engage the tool engaging finger with a tool holder in the compartment of the first magazine, pivoting the arm and simultaneously moving the tool engaging finger with respect to the arm in such a manner that the free end of the tool engaging finger performs a substantially rectilinear movement along the horizontal axis, thereby to remove a tool holder from said compartment and inserting it into said seat, positioning the frame adjacent the tool rest, positioning the second slide on the frame to line up the empty seat on the second tool magazine with the tool rest, positioning the first slide on the frame to align the tool engaging finger with a tool holder in the tool rest, positioning the arm and simultaneously moving the tool engaging finger with respect to the arm in such a manner that the free end of the tool engaging finger performs a substantially rectilinear movement aong the horizontal axis, thereby to remove a tool holder from the tool rest into the empty seat of the second tool magazine, positioning the second slide to line up the other seat of the tool magazine with the tool rest, pivoting the arm and simultaneously moving the tool engaging finger with respect to the arm in such a manner that the free end of the tool engaging finger performs a substantially rectilinear movement along the horizontal axis, thereby to insert a tool holder from said other seat into the tool rest, and positioning the frame adjacent the first tool magazine.
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |