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Drilling tool with drill bit

A technology for 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, material weakening, and complicated manufacturing, and achieve simple The effect of interchangeability

Active Publication Date: 2012-09-12
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 of the individual components is also relatively complex and causes material weakening in the area of ​​the separation point (demarcation point)

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The drilling tool shown in the figures is divided into two parts at a separation point 30 and comprises a base body 32 with a shank 14 and a drill crown 34 with a drill tip 10 . The drill crown 34 and the base body 32 can be connected to one another in a form-fitting and force-fitting manner at the separation point 30 . The base body 32 is preferably made of tool steel or high-speed steel, while the drill crown 34 is constructed as a shaped part made of a cutting material selected from the group of cemented carbides or ceramics, which is produced and sintered as a sintered powder Injection molded parts or powder extrusion molded parts. In principle, the drill crown 34 can also be produced from tool steel coated with a wear-resistant layer.

[0028] Figure 1a to Figure 1c The shown drilling tool has a drill tip 10 , a chip evacuation section 12 connected to the drill tip and a drill shank 14 formed behind the chip evacuation section 12 . The drill point 10 comprises ...

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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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Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/02B23C5/10
CPCB23B2251/02B23B2222/32B23B51/06B23B2205/02B23B51/02Y10T408/90987Y10T408/45Y10T408/9098Y10T408/78Y10T408/907Y10T408/895
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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