Drilling Machine, In Particular Hand-Held Core Drilling Machine
First Claim
1. A drilling machine, comprising:
- a tool spindle for driving a tool;
a drive including a motor for driving said tool spindle, said drive including at least a first transmission stage and a second transmission stage;
a center mount provided on said tool spindle for mounting a pilot drill;
a tool mount provided on said tool spindle for mounting a drill bit, wherein said center mount and said tool mount are arranged substantially concentrically with one another; and
a switching device interacting with said drive, said center mount and said tool mount;
wherein said switching device is configured for operating said drive selectively at least in a center drilling configuration or in a core drilling configuration, wherein, when being in said center drilling configuration, at least said pilot drill can be driven in said first transmission stage, and wherein, when being in said core drilling configuration, at least said drill bit can be driven in said second transmission stage;
whereby said pilot drill can be driven at a first rotational speed range, and said drill bit can be driven at a second rotational speed range different from said first rotational speed range.
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Accused Products
Abstract
The invention discloses a drilling machine, in particular a hand-held core drilling machine, having a drive with a motor that can be coupled to a tool spindle in order to drive the latter, wherein the drive allows at least a first transmission stage and a second transmission stage, having a center mount for mounting a pilot drill and having a tool mount for mounting a drill bit, wherein the drill bit and the pilot drill can be mounted substantially concentrically with one another, wherein the pilot drill, in particular in order to drill a pilot hole, can be driven in a first rotational speed range by means of the first transmission stage and wherein the drill bit, in particular in order to drill a core hole, can be driven in a second rotational speed range by means of the second transmission stage.
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Citations
20 Claims
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1. A drilling machine, comprising:
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a tool spindle for driving a tool; a drive including a motor for driving said tool spindle, said drive including at least a first transmission stage and a second transmission stage; a center mount provided on said tool spindle for mounting a pilot drill; a tool mount provided on said tool spindle for mounting a drill bit, wherein said center mount and said tool mount are arranged substantially concentrically with one another; and a switching device interacting with said drive, said center mount and said tool mount; wherein said switching device is configured for operating said drive selectively at least in a center drilling configuration or in a core drilling configuration, wherein, when being in said center drilling configuration, at least said pilot drill can be driven in said first transmission stage, and wherein, when being in said core drilling configuration, at least said drill bit can be driven in said second transmission stage; whereby said pilot drill can be driven at a first rotational speed range, and said drill bit can be driven at a second rotational speed range different from said first rotational speed range. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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- 4. The drilling machine of claim 4, wherein said gear mechanism has at least a first output and a second output, which outputs can be coupled selectively to said tool spindle in order to be driven in rotation, wherein said first output is assigned to said first transmission stage and wherein said second output is assigned to said second transmission stage.
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16. A drilling machine comprising:
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a tool spindle for driving a tool; a drive including a motor for driving said tool spindle, said drive including at least a first transmission stage and a second transmission stage; a tool comprising a pilot drill and a drill bit; a center mount provided on said tool spindle for mounting said pilot drill; a tool mount provided on said tool spindle for mounting said drill bit substantially concentrically with said pilot drill; wherein said center mount is configured for coupling to said first first transmission stage of said drive; wherein said tool mount is configured for coupling to said second transmission stage of said drive; whereby said pilot drill can be driven at a first rotational speed range, and said drill bit can be driven at a second rotational speed range different from said first rotational speed range; and wherein at least one of said pilot drill and the drill bit is mounted longitudinally movably on said tool spindle.
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17. A drilling machine, comprising:
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a tool spindle for driving a tool; a drive including a motor for driving said tool spindle, said drive including at least a first transmission stage and a second transmission stage; a center mount provided on said tool spindle for mounting a pilot drill; a tool mount provided on said tool spindle for mounting a drill bit; wherein said center mount and said tool mount are arranged substantially concentrically with one another; wherein said center mount is configured for coupling to said first first transmission stage of said drive; wherein said tool mount is configured for coupling to said second transmission stage of said drive; whereby said pilot drill can be driven at a first rotational speed range, and said drill bit can be driven at a second rotational speed range different from said first rotational speed range. - View Dependent Claims (18, 19, 20)
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Specification