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Elastomeric guide-sleeve

A technology of guiding device and punch, applied in the field of impact drill or impact hammer, can solve problems such as poor integrity of components

Inactive Publication Date: 2009-12-02
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor integrity of components set up to meet these functions

Method used

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  • Elastomeric guide-sleeve
  • Elastomeric guide-sleeve
  • Elastomeric guide-sleeve

Examples

Experimental program
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Effect test

Embodiment Construction

[0020] In the attached picture figure 1 The illustrated punch assembly 2 of the impact mechanism of a portable electric impact drill or impact hammer machine (not shown) basically consists of a punch guide 4 and a punch axially movable in the punch guide 4. The punch consists of a head 6 which transmits the impact pulse of the hammer 8 of the impact mechanism driven by the drive motor of the portable impact drill or impact hammer machine to a drill bit or impact tool B inserted in a tool holder 10 of the machine tool .

[0021] Such as Figure 4 As most clearly shown in , the punch 6 made of solid steel consists of two elongated cylindrical end portions 12, 14 with chamfered flat end faces 16 and a and a thickened middle portion 18 disposed between them. The central part 18 has a narrow, preferably but not necessarily cylindrical peripheral surface 20 in its center and is bounded on both sides by an oblique front side 22 and an oblique rear side 24 . The two side faces 22 ...

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Abstract

The invention relates to a percussion drill and / or percussion hammer machine with a drive motor, a percussion mechanism and a tool holder (10) for receiving a tool (B), wherein the percussion mechanism comprises a punch guide (4) The punch (6) that moves axially and acts on the tool, the present invention proposes: the punch guide (4) includes a ring-shaped cross-section made of elastomer material that surrounds the punch (6). The finished part (36).

Description

technical field [0001] The invention relates to an impact drill or percussion hammer machine with a drive motor, an impact mechanism and a tool holder for receiving a tool, wherein the impact mechanism includes a the punch. Background technique [0002] In order to seal the lubricated cavity against the surroundings on electrically driven portable electric percussion drills or percussion hammer machines, the percussion mechanism of the electric device for transmitting the percussion pulse usually includes a so-called punch, which can be pivoted The impact is applied in the direction of drilling and impact to a hammer that is movably supported in the punch guide and on the drive side by a hammer of the impact mechanism, the punch transmits the impact energy to the drive-side end of the tool received in the tool holder . Percussion drills or percussion hammer machines of the type mentioned at the outset are known, for example, from DE 199 33 972 A1 or DE 42 41 000 A1 from th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25D11/04B25D17/08B25D17/11B25D17/06
CPCB25D2250/365B25D2250/131B25D17/06B25D2250/191B25D2222/57
Inventor 阿希姆·迪塞尔贝格屈特·西贝尔
Owner ROBERT BOSCH GMBH
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