Drilling tool with drill bit

A technology of drilling tools and drill bits, which is applied in the direction of manufacturing tools, drilling/drilling equipment, parts of boring machines/drilling machines, etc. It can solve the problems of known drilling tools such as difficult operation, complicated manufacturing, and material weakening, and achieve simple The effect of interchangeability

Active Publication Date: 2010-08-11
KOMET GROUP GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Utilization of additional fasteners makes handling of known drilling tools difficult when changing drill crowns
Furthermore, the manufacture o

Method used

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  • Drilling tool with drill bit
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  • Drilling tool with drill bit

Examples

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Example Embodiment

[0025] The drilling tool shown in the drawing is divided into two parts at the separation point 30, and the drilling tool includes a base 32 with a drill shank 14 and a drill crown 34 with a drill tip 10. The drill crown 34 and the base 32 can be connected to each other in a form-locking and force-locking manner at the separation point 30. The base 32 is preferably made of tool steel or high-speed steel, and the drill crown 34 is configured as a molded part made of a cutting material selected from cemented carbide group or ceramics, the molded part is manufactured and sintered into a sintered powder Injection molded parts or powder extrusion molded parts. In principle, the drill crown 34 can also be made of tool steel coated with a wear-resistant layer.

[0026] Figure 1a to Figure 1c The illustrated drilling tool has a drill point 10, a chip removal part 12 connected to the drill point, and a drill shank 14 formed behind the chip removal part 12. The drill tip 10 includes two...

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PUM

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Abstract

The invention relates to a drilling tool with a base (32), having a central axis of rotation (24), and a drill bit (34), detachably connected to the base (32). The drill bit (34) has a coupling part (96), which can be coupled with a coupling receptacle (94) on the face of the base (32) and has at least two convexly curved centring portions (40), which are arranged such that they are distributed over the circumference and engage with an exact fit in complementary concavely curved centring portions (42) of the coupling receptacle (94). The coupling part (96) has a complementary driver stop (46), meshing with a rotary driver (44) of the coupling receptacle (94). It is claimed as novel that the centering portions (40, 42) of the coupling part (96) and/or of the coupling receptacle (94) have clamping surfaces (48, 50), which run onto each other in the manner of a rotary wedge until the driver stop (46) and the rotary driver (44) come up against each other counter to a predetermined direction of rotation.

Description

technical field [0001] The invention relates to a drilling tool comprising a base body and a drill crown detachably connected to the base body, the base body having a central axis of rotation, wherein the drill crown has a joint which can be connected to The joint seat on the end side of the basic body is engaged, and the joint part has at least two outwardly curved centering parts distributed along the periphery, and the outwardly curved centering parts fit into the In the complementary concave curved centering portion of the engagement seat, and the engagement portion has at least one complementary drive stop that engages with the rotational drive portion of the engagement seat. Background technique [0002] A drilling tool of this type is known (EP 0 813 459 B1), wherein the engagement between the base body and the joint is achieved by means of a clamping screw which penetrates a threaded hole in the base body , and use its tapered tip to engage in the eccentric tapered ...

Claims

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Application Information

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IPC IPC(8): B23B51/02B23C5/10
CPCB23B2251/02B23B2222/32B23B51/06B23B2205/02B23B51/02Y10T408/45Y10T408/78Y10T408/895Y10T408/907Y10T408/9098Y10T408/90987
Inventor U·克雷奇曼R·施耐德H·许特M·卢伊克M·厄特勒
Owner KOMET GROUP GMBH
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