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US 4,784,542 AGranted
Tool-mounting assembly having an exchangeable tool head
AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorsHans Tack, Kurt Mayer
Life of this patent
Estimating the term…
Abstract
A tool-mounting assembly includes a tool head having a receiving bore and a basic tool holder having a receiving pin that is shaped for insertion into the bore. The bore has a groove with a sloping surface and the receiving pin includes movably mounted clamping elements having lugs. The assembly also includes a clamping device in the form of a screw with left-handed threads that engage one clamping element and right-handed threads that engage the other, so that the clamping elements can be moved away from each other to force the lugs into the groove and thereby clamp the tool head to the basic tool holder. In another embodiment an axially movable push rod is used as the clamping device to force the clamping elements away from each other.
Claims27
A tool-mounting assembly, comprising:
- a tool head having a receiving bore with an opening and bore axis which extends through said opening, said bore having a groove with a slide face which extends at an acute angle to said bore axis, said tool head additionally having a frontal face surrounding said opening and extending perpendicularly to said bore axis;
- and
- a basic tool holder having a base with a frontal face, having a receiving pin configured for insertion into said receiving bore, said receiving pin extending outward from said frontal face of said base and having a pin axis which coincides with said bore axis when said receiving pin is inserted into said receiving bore, and having externally actuated clamping device means for selectively clamping said frontal face of said tool head to said frontal face of said base when said receiving pin is inserted into said receiving bore, wherein said receiving pin includes a plurality of chucking elements having outside portions that are mounted on said base for radial movement with respect to said pin axis, each chucking element additionally having an inside portion with a slide face which is configured to enter said receiving bore and engage said slide face of said groove, said outside portions of said chucking elements being disposed on one side of said frontal face of said base and said inside portions of said chucking elements being disposed on the other side of said frontal face of said base, and wherein said clamping device means includes means for selectively forcing said chucking elements away form said pin axis to press said slide faces of said chucking elements against said slide face of said groove.
A tool-mounting assembly, comprising:
- a tool head having a receiving bore with an opening and a bore axis which extends through said opening, said bore having a groove with a slide face which extends at an acute angle to said bore axis, said tool head additionally having at least one frontal face surrounding said opening and extending perpendicularly to said bore axis;
- and
- a basic tool holder having a receiving pin configured for insertion into said receiving bore, said receiving pin having a pin axis which coincides with said bore axis when said receiving pin is inserted into said receiving bore, having at least one frontal face disposed around said receiving pin, and having externally actuated clamping device means for selectively clamping said at least one frontal face of said tool head to said at least one frontal face of said basic tool holder when said receiving pin is inserted into said received bore,
- wherein said receiving pin includes a plurality of chucking elements that are mounted for movement that is generally radial with respect to said pin axis, each chucking element having a chuck jaw with a slide face which is configured to engage said slide face of said groove,
- wherein said clamping device means includes means for selectively forcing said chucking elements away from said pin axis to press said slide faces of said clamping elements against said slide face of said groove,
- wherein said chucking elements have additional slide faces that are disposed adjacent said pin axis and that are oriented obliquely with respect to said pin axis,
- wherein said clamping device means comprises a movably mounted push rod having a wedge-shaped clamping faces which are positioned to engage said additional slide faces and force said chucking elements radially apart when said rod is pushed, and
- wherein said receiving pin has a plurality of recesses, each recess being disposed adjacent a respective chucking element, and further comprises means for urging said chucking elements toward said pin axis when said push rod is withdrawn from said additional slide faces and said tool head is removed from said receiving pin, said means for urging including a plurality of securing pins, each pin being movably mounted in a respective chucking element and having an end which is positioned to fall into the respective recess when the respective chucking element moves toward said pin axis.
5 more elements
A tool-mounting assembly, comprising:
- a tool head having a receiving bore with an opening and a bore axis which extends through said opening, said bore having a groove with a slide face which extends at an acute angle to said bore axis, said tool head additionally having at least one frontal face surrounding said opening and extending perpendicularly to said bore axis;
- and
- a basic tool holder having a receiving pin configured for insertion into said receiving bore, said receiving pin having a pin axis which coincides with said bore axis when said receiving pin is inserted into said receiving bore, having at least one frontal face disposed around said receiving pin, and having externally actuated clamping device means for selectively clamping said at least one frontal face of said tool head to said at least one frontal face of said basic tool holder when said receiving pin is inserted into said receiving bore,
- wherein said receiving pin includes a plurality of chucking elements that are mounted for movement that is generally radial with respect to said pin axis, each chucking element having a chuck jaw with a slide face which is configured to engage said slide face of said groove,
- wherein said clamping device means includes means for selectively forcing said chucking elements away from said pin axis to press said slide faces of said clamping elements against said slide face of said groove, and
- wherein said chucking elements are disposed asymmetrically with respect to a cross-sectional axis extending perpendicularly to said pin axis.
3 more elements
Dependencies are inferred from the claim text.