EP0601349A1 - Marteau de percussion et/ou de forage - Google Patents
Marteau de percussion et/ou de forage Download PDFInfo
- Publication number
- EP0601349A1 EP0601349A1 EP93118197A EP93118197A EP0601349A1 EP 0601349 A1 EP0601349 A1 EP 0601349A1 EP 93118197 A EP93118197 A EP 93118197A EP 93118197 A EP93118197 A EP 93118197A EP 0601349 A1 EP0601349 A1 EP 0601349A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer
- tube
- tool holder
- striker
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
Definitions
- the invention is based on a hammer drill and / or percussion hammer according to the preamble of claim 1.
- hammers are widely used, e.g. Known from DE 41 21 279 A1:
- the guide tube or hammer tube for the striking mechanism there consists of a machined piece of tube which also serves as a tool receiving sleeve.
- additional diameter-reducing inserts are sometimes provided for guiding the striking mechanism parts.
- the tool holder itself is manufactured using complex machining processes such as turning, grinding and broaching.
- the hammer and / or percussion hammer according to the invention and the method for its production with the characterizing features of the independent claims have the advantage that machining of the hammer tube can be omitted or at least reduced to a fraction and any reworking is eliminated. Additional insert parts in the hammer tube are also eliminated. This saves raw materials and the strength of the hammer tube is considerably increased by largely uninterrupted fiber routing. In addition, the measure leads to a significantly improved concentricity of the tools used compared to versions with additional inserts.
- FIG. 1 An embodiment of the invention are shown in the drawing and explained in more detail in the following description.
- the figure shows a longitudinal section through a hammer drill.
- FIG. 1 shows a detail of a rotary hammer 1 with a housing 2 and a motor 3 at the rear.
- the motor 3 drives a striking mechanism 5 via a shaft 4.
- This has a racket 6, which acts via a striker 7 on a tool, not shown, which is accommodated in a tool holder 8 at the front and which is guided in a receiving sleeve 9.
- the racket 6 is driven back and forth by a spring-stiff driver member 11. This is mounted such that it can be tilted about a tilt axis 12 and is coupled to a drive member 13.
- the drive member 13 consists of an articulation sleeve 16, which has a downward extension with an opening 18.
- the centerpiece of the drive is two eccentric parts 20, 21 which can be rotated relative to one another to a limited extent and which abut or engage in one another.
- the inner eccentric part 20 consists of two links 20a, 20b for assembly reasons. These are mutually immovable and fixed during operation, e.g. connected to the shaft 4 by welding or pressing.
- the eccentric part 20 has an eccentric outer ring surface 22 on which an inner ring surface 23 of an outer eccentric part 21 rests.
- the articulation sleeve 16 is supported on a needle bearing 25 on an outer peripheral surface of the eccentric part 21.
- the articulation sleeve 16 is secured by a collar 26 on the eccentric part 21 and a spring-loaded spacer sleeve 27, which urges the entire drive member 13 towards the tool holder 8.
- the exact design and function of the inner eccentric part 20 is described in DE 42 31 986, to which express reference is made here.
- the striking mechanism 5 is guided in a hammer tube 29 which extends into the tool holder 8 and is axially movable to a limited extent and which is rotatably mounted in the housing 2.
- a gear 30 for rotary drive is firmly connected, which meshes with a second gear 31 seated on the shaft 4.
- the toothed wheel 30 On its end face facing the eccentric part 21, the toothed wheel 30 carries an axial bearing 32 which, with the interposition of a disk 33, is in contact with the end face of the eccentric part 21 on the collar.
- the gear parts are sealed by a shaft sealing ring 34 inserted between housing 2 and hammer tube 29.
- the hammer tube 29 has a rear section 35 with a larger diameter and a front section 36 with a narrower diameter which forms the receiving sleeve 9.
- the front section 36 is manufactured by an originally the diameter further section 35 corresponding pipe piece, preferably a precision steel tube, is reduced in diameter without cutting. This is advantageously done by round hammers or kneading.
- an outer shoulder 37 and an inner shoulder 38 are formed between the sections 35, 36.
- a compression spring 39 is supported on the outer shoulder 37 of the hammer tube 29 and acts in a known manner on a locking body 40 in the tool holder 8.
- the inner shoulder 38 serves as a front stop for the die 7; a locking ring 41 serves as the rear stop.
- the receiving sleeve 9 has at least one opening 42 for the locking body 40 and one or more axially extending rotary driving bars 43. These protrude into the free bore of the receiving sleeve 9 and are also formed without cutting out of the wall of the receiving sleeve 9. This is preferably done by kneading in one operation with the diameter reduction described above. A very high dimensional accuracy is achieved even without post-processing by machining processes.
- the eccentric part 21 When the tool 9 is pressed less strongly, the eccentric part 21 can move axially a little to the right relative to the eccentric part 20. It inevitably twists along the curved tracks 37 compared to the inner eccentric part 20, which reduces the total eccentricity. If the tool 9 is completely removed from the workpiece, the outer eccentric part 21 comes into its front end position, as shown in FIG. 2, under pressure from the spring-loaded spacer sleeve 27. Since the total eccentricity of the drive member 13 is now zero, the articulation sleeve 16 remains without a deflection and the lever 14 stands still. The striking mechanism is thus switched off.
- the invention is not limited to the illustrated embodiment. In particular, it can also be used on rotary hammers with a pneumatic hammer mechanism.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924241000 DE4241000A1 (de) | 1992-12-05 | 1992-12-05 | Bohr- und/oder Schlaghammer |
DE4241000 | 1992-12-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0601349A1 true EP0601349A1 (fr) | 1994-06-15 |
Family
ID=6474495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93118197A Withdrawn EP0601349A1 (fr) | 1992-12-05 | 1993-11-10 | Marteau de percussion et/ou de forage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0601349A1 (fr) |
DE (1) | DE4241000A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100225075A1 (en) * | 2007-08-01 | 2010-09-09 | Joachim Hecht | Hand power tool with a tool holder |
CN103221185A (zh) * | 2010-11-29 | 2013-07-24 | 罗伯特·博世有限公司 | 锤击机构 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10323606B4 (de) * | 2003-05-20 | 2005-04-14 | Robert Bosch Gmbh | Elastische Döpperführung |
DE10362025B4 (de) * | 2003-05-20 | 2006-02-09 | Robert Bosch Gmbh | Bohr- oder Schlaghammer |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2029997A1 (de) * | 1970-06-18 | 1971-12-23 | Fa. C.& E. Fein, 7000 Stuttgart | Motorisch angetriebenes Hammer-Handwerkzeug |
DE2313415A1 (de) * | 1973-03-17 | 1974-09-26 | Union Sils Van De Loo & Co | Nabenrohr fuer radnaben sowie verfahren und vorrichtung zur herstellung derselben |
DE2726214A1 (de) * | 1977-06-10 | 1978-12-21 | Hilti Ag | Bohrhammer mit pneumatisch angetriebenem schlagkolben |
FR2511289A1 (fr) * | 1981-08-17 | 1983-02-18 | Hilti Ag | Marteau perforateur a cylindre de guidage du mecanisme de percussion |
WO1986003705A1 (fr) * | 1984-12-21 | 1986-07-03 | Zahnradfabrik Friedrichshafen Ag | Procede de fabrication d'une boite a clapet en une seule piece pour vanne a tiroir rotatif |
WO1990001400A1 (fr) * | 1988-08-02 | 1990-02-22 | Robert Bosch Gmbh | Marteau perforateur ou de demolition |
WO1993000201A1 (fr) * | 1991-06-27 | 1993-01-07 | Robert Bosch Gmbh | Marteau perforateur et/ou frappeur |
-
1992
- 1992-12-05 DE DE19924241000 patent/DE4241000A1/de not_active Withdrawn
-
1993
- 1993-11-10 EP EP93118197A patent/EP0601349A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2029997A1 (de) * | 1970-06-18 | 1971-12-23 | Fa. C.& E. Fein, 7000 Stuttgart | Motorisch angetriebenes Hammer-Handwerkzeug |
DE2313415A1 (de) * | 1973-03-17 | 1974-09-26 | Union Sils Van De Loo & Co | Nabenrohr fuer radnaben sowie verfahren und vorrichtung zur herstellung derselben |
DE2726214A1 (de) * | 1977-06-10 | 1978-12-21 | Hilti Ag | Bohrhammer mit pneumatisch angetriebenem schlagkolben |
FR2511289A1 (fr) * | 1981-08-17 | 1983-02-18 | Hilti Ag | Marteau perforateur a cylindre de guidage du mecanisme de percussion |
WO1986003705A1 (fr) * | 1984-12-21 | 1986-07-03 | Zahnradfabrik Friedrichshafen Ag | Procede de fabrication d'une boite a clapet en une seule piece pour vanne a tiroir rotatif |
WO1990001400A1 (fr) * | 1988-08-02 | 1990-02-22 | Robert Bosch Gmbh | Marteau perforateur ou de demolition |
WO1993000201A1 (fr) * | 1991-06-27 | 1993-01-07 | Robert Bosch Gmbh | Marteau perforateur et/ou frappeur |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100225075A1 (en) * | 2007-08-01 | 2010-09-09 | Joachim Hecht | Hand power tool with a tool holder |
US8276483B2 (en) * | 2007-08-01 | 2012-10-02 | Robert Bosch Gmbh | Hand-held power tool with a tool holder |
CN103221185A (zh) * | 2010-11-29 | 2013-07-24 | 罗伯特·博世有限公司 | 锤击机构 |
Also Published As
Publication number | Publication date |
---|---|
DE4241000A1 (de) | 1994-06-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0590352B1 (fr) | Marteau de frappe et/ou de forage | |
EP1101570B1 (fr) | Appareil de forage et de percussion | |
EP0432169B1 (fr) | Dispositif de transmission de couple sur les machines-outils | |
DE4214266C2 (fr) | ||
DE3405922A1 (de) | Handwerkzeugmaschine, insbesondere bohr- oder schlaghammer | |
DE69200217T2 (de) | Werkzeughalter für Werkzeugmaschinen. | |
EP0268758B1 (fr) | Mandrin à forer | |
DE69400644T2 (de) | Motorisch angetriebenes Werkzeug, insbesondere ein Elektrowerkzeug | |
EP0548008B1 (fr) | Outil pour forage à percussion et ciselage et mandrin pour cet outil | |
EP0762948B1 (fr) | Porte-outil pour perceuse manuelle, notamment pour marteau-foreur | |
DE3132450A1 (de) | Bohrhammer mit fuehrungszylinder fuer das schlagwerk | |
EP0605602A1 (fr) | Dispositif monte sur des outils a main mecaniques. | |
DE19900011A1 (de) | Verfahren und Vorrichtung zum Feinbearbeiten von Getriebezahnrädern | |
EP3456479B1 (fr) | Dispositif d'entraînement pour une machine-outil motorisée | |
DE4328358A1 (de) | Handbohrmaschine, insbesondere Bohrhammer | |
DE3516541A1 (de) | Werkzeughalter | |
EP0601349A1 (fr) | Marteau de percussion et/ou de forage | |
DE19519639B4 (de) | Werkzeugkopf mit axial verstellbarem Spannfutter | |
DE10123494B4 (de) | Innen-Räummaschine | |
EP1414608B1 (fr) | Outil et procede pour la finition de sieges et de guides de soupapes | |
DE9219203U1 (de) | Bohr- und/oder Schlaghammer | |
WO2010028874A1 (fr) | Boulon de couplage, machine-outil et procédé de fabrication d'un boulon de couplage | |
DE4441820A1 (de) | Bohr- und/oder Schlaghammer | |
DE3333856C2 (de) | Werkzeugaufnahme für Mehrnuthammerbohrer für einen elektropneumatischen Bohrhammer | |
DE19958342C2 (de) | Drehend angetriebene Werkzeughalterung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI |
|
17P | Request for examination filed |
Effective date: 19941215 |
|
17Q | First examination report despatched |
Effective date: 19950118 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19950530 |