US3770610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for mechanically and electrochemically machining the surface of metallic workpieces
Assignee: Maschinenfabrik Gehring GmbH and Co KG
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Filing: 1971-11-02
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Granted: 1973-11-06
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Expires: 1991-11-02
Abstract
Abstract A tool for mechanically and electrochemically machining the surfaces of metallic workpieces in which a cylindrical body has distributed thereabout in alternating relation mechanical tool elements and electrochemical tool elements. The tool elements are radially moveable on the body and respective actuators are provided therefor with a slip clutch between the actuators so that when the electrochemical tool elements stop on the workpiece surface, the mechanical elements can continue radially outward feed movement.
Inventors
- 👤 W Strauss
- 👤 C Gehring
- 👤 E Scholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:41
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/06
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
143 words
Apparatus for mechanical and electrochemical machining surfaces of metallic workpieces, a tool body, first tool means provided with the tool body for mechanically machining a workpiece, second tool means provided with the tool body for electrochemically machining a workpiece, each of said first and second tool means having work surfaces, separate feed means adjustable by differing amounts and journalled by the body in location transverse to the work surfaces of said first and second tool means respectively, said second tool means being secured in a particular adjusted position by said feed means pertaining thereto to assure against movement in feeding direction and also against movement contra to feeding direction, clutch means positively effective for coupling said separate feed means together, and an actuator means of said feed means for said second tool means being connected on output side thereof with said clutch means.
Claim 2
Dependent Claim
143 words
Apparatus for mechanical and electrochemical machining surfaces of metallic workpieces, a tool body, first tool means provided with the tool body for mechanically machining a workpiece, second tool means provided with the tool body for electrochemically machining a workpiece, each of said first and second tool means having work surfaces, separate feed means adjustable by differing amounts and journalled by the body in location transverse to the work surfaces of said first and second tool means respectively, said second tool means being secured in a particular adjusted position by said feed means pertaining thereto to assure against movement in feeding direction and also against movement contra to feeding direction, clutch means positively effective for coupling said separate feed means together, and an actuator means of said feed means for said second tool means being connected on output side thereof with said clutch means.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1 in which work surface of said first tool means compared with work surface of said second tOol means provides greater axially extending magnitude.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 1 in which said clutch means includes adjustable coupling resistance provision.
Claim 5
Dependent Claim
50 words
Apparatus according to claim 1 in which said first and second tool means have counter surfaces, and actuating bar means provided with adjusting surfaces engaged by said counter surfaces and provided to be adjustable axially of the tool body, said actuating bar means being coupled together by said clutch means.
Claim 6
Dependent Claim
52 words
Apparatus according to claim 1 in which first adjusting surface means alternately in axial direction of the tool body being provided for said first tool means for mechanical machining and second adjusting surface means alternately in axial direction of the tool body being provided for said second tool means for electrochemically machining.
Claim 7
Dependent Claim
25 words
Apparatus according to claim 5 in which one adjusting surface means is provided more for said first tool means than for said second tool means.
Claim 8
Dependent Claim
19 words
Apparatus according to claim 1 in which annular spring means at least engages all movable tool means in common.
Claim 9
Dependent Claim
26 words
Apparatus according to claim 1 in which said feed means are located essentially entirely within the tool body and adjusting bars thereof directly adjoining each other.
Claim 10
Dependent Claim
18 words
Apparatus according to claim 8 in which said adjusting bars are located coaxially telescopic in said feed means.
Claim 11
Dependent Claim
45 words
Apparatus according to claim 8 in which internally located adjusting bars of said feed means for said second tool means and a sleeve formed control means thereof are connected together by at least one pin guided in an axial slit of an outer adjusting bar.
Claim 12
Dependent Claim
14 words
Apparatus according to claim 1 in which said feed means are essentially identically embodied.
Claim 13
Dependent Claim
45 words
Apparatus according to claim 1 in which said clutch means includes a coupling sleeve positively connected with an adjusting bar of said feed means of said first tool means at least in feeding-in direction of movement, and a force-locking member supported on said coupling sleeve.
Claim 14
Dependent Claim
36 words
Apparatus according to claim 12 in which said force-locking member comprises a friction sleeve arranged in said coupling sleeve and surrounding the adjusting bar of said feed means of said second tool means in force-locking connection.
Claim 15
Dependent Claim
20 words
Apparatus according to claim 12 in which a clamping spindle is provided for said force-locking member of said clutch means.
Claim 16
Dependent Claim
40 words
Apparatus according to claim 14 in which said clamping spindle comprises an externally actuated spindle sleeve surrounding an adjusting bar of said feed means of said second tool means, and guide means between said coupling sleeve and said spindle sleeve.
Claim 17
Dependent Claim
57 words
Apparatus according to claim 12 in which said force-locking member comprises at least one clamping body supported by cone means located inside said coupling sleeve and connected with an adjusting bar of said feed means for said second tool means, said clamping body and said cone means being resiliently biased against each other into a coupling position.
Claim 18
Dependent Claim
27 words
Apparatus according to claim 1 in which an adjusting bar of said feed means of said second tool means is resiliently biased against feed-in direction of movement.
Claim 19
Dependent Claim
29 words
Apparatus according to claim 1 in which said clutch means is provided remote from clamping location of said tool body in axial direction adjacent to work surfaces pertaining thereto.
Claim 20
Dependent Claim
33 words
Apparatus according to claim 1 in which an adjusting bar of said feed means of said second tool means protrudes beyond an end of said tool body remote from the clamping end thereof.
Claim 21
Dependent Claim
50 words
Apparatus according to claim 19 in which said second tool means comprises at least one spacer member projecting over a pertaining work surface and including electrically insulating material to engage against the work surface, there being several spacer members distributed peripherally of said tool body on said second tool means.
Claim 22
Dependent Claim
17 words
Apparatus according to claim 20 in which said several spacer members are adhesively secured in recess-formIng means.
Claim 23
Dependent Claim
22 words
Apparatus according to claim 20 in which at least one spacer member is provided in axial direction adjoining electrochemically effective work surface.
Claim 24
Dependent Claim
38 words
Apparatus according to claim 22 in which the electrochemically effective work surface extends only less than half axial distance of mechanically effective work surface and being located approximately symmetrical to middle of axial extension of mechanical work surface.
Claim 25
Dependent Claim
83 words
Apparatus according to claim 22 in which in axial direction of the tool body adjacent to the electrolytically effective work surface there is provided at least one spacer member having a guiding surface preferably located in the continuation of a guiding surface of the spacer member which is provided in the region of the electrolytically effective work surface, and a guiding element formed by a strip having a guiding surface which equals in width preferably the width of the mechanically effective work surface.
Claim 26
Dependent Claim
28 words
Apparatus according to claim 24 in which the guiding element in particular consists of electrically non-conductive material connected directly to a pertaining sliding member, preferably in a recess.
Claim 27
Dependent Claim
57 words
Apparatus according to claim 24 in which in the axial direction on both sides of the electrolytically effective work surface there are provided spacer members, which preferably by means of their ends which face away from the electrolytically effective work surface extend in axial direction as far as the pertaining ends of the mechanically effective work surface.
Claim 28
Dependent Claim
37 words
Apparatus according to claim 24 in which the spacer member is located symmetrically with regard to the central plane which passes through the axis of the tool and pertains to the respective pertaining electrochemically effective tool means.
Claim 29
Dependent Claim
109 words
Apparatus according to claim 27 in which the tool body with the exception of the areas of the work surfaces and as the case may be of the sliding surfaces is substantially completely covered by an electrical insulation connected thereto, which insulation is preferably formed by insulating sleeves in the direction of the tool axis, being adjacent on both sides to the work surfaces, said insulating sleeves being located between the guiding surfaces and the mechanically effective work surfaces, and an insulating cap at that end of the tool body which faces away from the clamping end of the tool means, the parts of the insulation being detachably connected.
Claim 30
Dependent Claim
50 words
Apparatus according to claim 28 in which an actuating bar of the feed means and optionally a clamping element of the clutch means freely protrude beyond that end of the tool means which faces away from the clamping end and preferably is guided by a bore in said insulating cap.
Claim 31
Dependent Claim
26 words
Apparatus according to claim 28 in which said insulating sleeves extend over two annular springs which are adjacent to the axial ends of the work surfaces.
Claim 32
Dependent Claim
53 words
Apparatus according to claim 24 in which said second tool means for current supply is connected directly with at least one highly flexible electric counductor connected to a sliding member of the pertaining electrochemically effective tool means, said sliding member consisting of electrically well-conductive material connected particularly to the electrically conductive tool body.
Claim 33
Dependent Claim
62 words
Apparatus according to claim 31 in which a pertaining end of the electric conductor is substantially parallel to the tool axis and is inserted into a bore provided at the end of the electrochemically effective tool means and extends outside the tool means, especially in an axial groove of the tool body, the axial groove being covered by the pertaining insulating sleeve.
Claim 34
Dependent Claim
36 words
Apparatus according to claim 32 in which a clamping end of the tool body has an electric contact surface formed by a clamping cone and adjacent to the contact surface there is provided a trapezoidal thread.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |