CN101992454B - Cutter holding device for hammer drill - Google Patents
Cutter holding device for hammer drill Download PDFInfo
- Publication number
- CN101992454B CN101992454B CN201010254341.3A CN201010254341A CN101992454B CN 101992454 B CN101992454 B CN 101992454B CN 201010254341 A CN201010254341 A CN 201010254341A CN 101992454 B CN101992454 B CN 101992454B
- Authority
- CN
- China
- Prior art keywords
- cutter
- adapter
- holding device
- tool holder
- grafting
- 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.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000004323 axial length Effects 0.000 claims description 6
- 238000004904 shortening Methods 0.000 claims description 4
- 230000006870 function Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000002301 combined effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- B25D17/005—Attachments or adapters placed between tool and hammer
-
- 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
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0038—Locking members of special shape
- B25D2217/0042—Ball-shaped locking members
Abstract
For the cutter holding device of hammer drill, there is tool holder and the impact components of be rotated driving for receiving plug-in type cutter.One grafting adapter is removably inserted in this tool holder, wherein, a part at least axially length of the cutter receptor in grafting adapter is positioned at when inserting inside described tool holder.
Description
Technical field
The present invention is a kind of cutter holding device for hammer drill.
Background technology
By the known a kind of hammer drill of DE102006016804A1, this hammer drill has the hammer pipe of the rotatable arrangement for receiving rotation or plug-in type cutter, and this cutter is loaded by striker on axial end.This is inserted in the plug-in type cutter in hammer pipe by the axial locking of locking ball, and this locking ball is passed through the groove in hammer tube wall and rabbets with the groove on the plug-in type shank of tool.Different types of plug-in type cutter can be received in hammer pipe in principle, for instance screwdriver cutter head, and Hex bores or SDS bores, as long as these plug-in type cutters have same kind of shank part.
Summary of the invention
The task of the present invention exists, and can answer a kind of hammer drill of land used structure in many-side when compact structure as far as possible.
According to the present invention, propose a kind of cutter holding device for hammer drill, there is the tool holder of the be rotated driving for receiving plug-in type cutter and load the impact components of this plug-in type cutter in the axial direction, wherein, one grafting adapter is removably inserted in this tool holder, it is positioned at inside described tool holder when inserting on 1/3rd of cutter receptor in this grafting adapter at least axially length, wherein, in order to avoid contacting with described impact components, the adapter handle of this this grafting adapter is provided with the length of axial shortening.
This task solves according to the feature in techniques described above scheme of the present invention.Following description provides the expanded configuration meeting purpose.
The tool holder of pivotable drive for receiving plug-in type cutter is comprised and for realizing the impact components loading plug-in type cutter in the axial direction of hammer drill function for the cutter holding device of hammer drill according to the present invention.This tool holder is embodied as reception sleeve or hammer pipe, and this plug-in type cutter can be plugged in hammer pipe.For the property of can be inserted into of the extension of hammer drill, a grafting adapter is removably inserted in tool holder, wherein, a part at least axially length of the cutter receptor in grafting adapter is positioned at inside tool holder when inserting.Such as, on 1st/3 of cutter receptor axially length, if desired the major part of axially length extend in tool holder when inserting and particular on the inside of hammer pipe so that this is inserted into the cutter in cutter receptor and also extend in hammer pipe.Extending the application of hammer drill by this way, wherein, the axial length of hammer drill does not have when adapter inserts or at least without increasing significantly yet.
According to the embodiment meeting purpose, the adapter handle of grafting adapter has locking element, and this adapter handle extend in tool holder, the locking element combined effect corresponding in tool holder of these locking elements.In order to avoid contacting with impact components, this adapter handle has the length of axial shortening so that though impact bore run connect time this impact components also not with grafting adapter or receive plug-in type tool contact in grafting adapter.Therefore, even if hammer drill function is switched on, be also only rotate actuation movement so rather than hammer drill function on grafting adapter and the plug-in type cutter that receives wherein.
Because grafting adapter is provided with locking element, so the reliable locking of adapter is feasible in tool holder, these locking elements are implemented corresponding to these locking elements being arranged in tool holder.These locking elements on grafting adapter are equivalent to the locking element of plug-in type cutter, and these plug-in type cutters are directly inserted in tool holder and these cutters particularly relate to SDS system.
Cutter receptor in grafting adapter is preferable to carry out for receiving screwdriver cutter head.The interior cross section of the cutter receptor in grafting adapter is advantageously implemented as polygon, is especially hexagon, in order to set up the positive between plug-in type cutter and the grafting adapter to insert on circumference or rotation direction.
Should manufacture in a straightforward manner by the grafting adapter implemented in the way of front description and be connected with the cutter holding device of hammer drill.Additional plug-in type tool type can be used by this grafting adapter.Tool holder in hammer drill is implemented to be particularly useful for receive SDS drill bit, and the cutter receptor in grafting adapter is then used for receiving screwdriver cutter head.
Locking element on the inner side of the tool holder in hammer drill advantageously has the connecting portion that radial inward raises, and wherein, the corresponding locking element on outside adapter handle is configured to receive the groove of this connecting portion.This is corresponding to the configuration of SDS type exterior feature.
The embodiment of purpose is met according to other, the axial length of adapter handle is so determined, adapter handle is being deviated from the side inserting opening less than the torque portable element in tool holder when inserting, and this torque portable element is such as embodied as longitudinally connected portion.This impact components guarantees by this way: keep a minimum range when inserting between the axial end towards hammer drill and the impact components of adapter handle so that even if can not contact adapter handle or the plug-in type cutter in adapter handle when hammer drill function is connected.
In order to axially retain in tool holder or locking adapter handle, the surface of adapter handle preferably has recess, and this recess is used for receiving locking ball, and this locking ball is placed in hammer drill.This locking ball especially through tool holder wall in groove, this tool holder be configured to hammer pipe, wherein, be achieved in that the axial locking of grafting adapter, namely this locking ball be arranged in adapter handle recess and simultaneously be arranged in hammer pipe wall groove in.
This grafting adapter can have radially projecting flange, this flange restriction grafting adapter insertion depth in tool holder.Meeting destination on the side of tool holder and be provided with a protective cover, it is especially made up of rubber, the prominent flange of grafting adapter abut in protective cover axially external on.
Cutter receptor in grafting adapter extends in the inside of tool holder preferably in the major part of its axial length when adapter inserts, in order to will exceed the less axially beyond being highly kept as of the end face of tool holder.Thus especially at the axial length beyond the shortening obtaining grafting adapter in part of grafting adapter, this can improve precision during tool sharpening when toolroom machine runs.
When inserting, at least most of destination that meets of adapter handle extend in the tool holder of hammer drill.At this, this adapter handle is made up of two sections, and first section adjacent with impact components in them is the supporting body of locking element and second section adjacent with the free end face of tool holder has the cutter receptor with form of grooves.Locking element on adapter handle is preferably not in the part offering cutter receptor wherein of adapter handle.
Accompanying drawing explanation
Other advantage and the embodiment meeting purpose illustrate from other claim, accompanying drawing and draw claim.Accompanying drawing illustrates:
Fig. 1 has the hammer drill forward part of the hammer pipe as the tool holder for receiving plug-in type cutter,
The detailed view of the section of Fig. 2 traverse hammer pipe front section,
Fig. 3 traverse has the sectional drawing of the hammer pipe of the grafting adapter inserted,
Fig. 4 is transverse to the sectional drawing of the longitudinal axis through grafting adapter.
Detailed description of the invention
Figure 1 illustrates the forward part of the hammer drill 1 of electric motor drive, this forward part has cutter holding device 2, this cutter holding device 2 have for receive the plug-in type cutter 4 that only schematically illustrates, be arranged in cutter holding device, the hammer pipe 3 of rotatable driving.This plug-in type cutter 4 is moved upwards up in hammer pipe 3 and there by the axial locking of locking ball 6 in the side of longitudinal axis 5.Can realizing switching on and off hammer function by striker 7, this striker is loaded in the axial direction by hammering 8 into shape, wherein, and the side towards it of the side contact plug-in type cutter 4 of striker 7.
Figure 2 illustrates the front section of the hammer pipe 3 constituting tool holder.The inner side of hammer pipe 3 is configured with the connecting portion 9 that radial inward raises, this connecting portion constitutes the long body extended in the axial direction and has torque and take the function of locking piece, and locking piece locking element combined effect corresponding on the surface of plug-in type cutter is taken in this torque.On circumference or rotation direction, the positive between hammer pipe 3 and the plug-in type cutter inserted is obtained by connecting portion 9.On the side of plug-in type cutter, corresponding locking element is embodied as cannelure.The hammer pipe 3 constructed by this way is for receiving SDS cutter.
Being provided with groove 10 in the wall of hammer pipe 3, this locking ball 6 (Fig. 1) extend in groove 10.
Figure 3 illustrates the hammer pipe 3 of the grafting adapter 11 with insertion.This grafting adapter 11 is made up of adapter handle 12 and the flange 13 radially widened, and this adapter handle extend in this hammer pipe 3.On the axial end with flange 13, being provided with a groove in adapter handle 12, this groove constitutes the cutter receptor 14 for receiving plug-in type cutter 15.This plug-in type cutter 15 especially screwdriver cutter head.This cutter receptor 14 has cross section in (learning) hexagon as Fig. 4, and external cross section is implemented circularly.
This adapter handle 12 has locking element deviating from flange 13 side, locking element with inside hammer pipe 3 on connecting portion 9 corresponding.Locking element on the surface of adapter handle 12 is the groove extended on axis longitudinal direction.
Additionally, offer a recess 16 in the surface of adapter handle 12, corresponding with the groove 10 in the wall of hammer pipe 3 and for the grafting adapter that is axially locked in this hammer pipe the locking ball 6 of this recess stretches in this recess.This recess 16 be positioned at outside cutter receptor 14 in the axial direction as the locking element corresponding with connecting portion 9 is the same adapter handle, axially rear, deviate from the section of flange 13.Therefore, the wall of cutter receptor 14 does not have locking element and recess.
In the region of axial end, being provided with protective cover 17 on hammer pipe 3, this protective cover is preferably implemented as rubber cover.When inserting, the flange 13 of grafting adapter 11 adjoins with protective cover 17, and this protective cover is the insertion depth of restriction adapter handle 12 on hammer pipe 3 therefore.Meet destination about the size of adapter handle 12 and the axial length of protective cover 17 so mutually coordinated so that adapter handle 12, the axial end 12a that deviates from flange 13 when inserting less than the locking element 9 on the inwall of hammer pipe 3.Learning as Fig. 3, at the axial end 12a exceeding adapter handle 12 towards the relatively away minor segment of the locking element 9 being embodied as connecting portion on the side of hammer drill.The impact components of hammer drill guarantees by this way, even if can not arrive axial end 12a or the end face of plug-in type cutter inserted when hammer drill function is connected.
The degree of depth that is axially inserted into of grafting adapter 11 is also otherwise limited in principle, for instance by the protuberance on other components of hammer pipe 3 or hammer drill and projection.
Claims (13)
1. for the cutter holding device of hammer drill, there is the tool holder (3) of the be rotated driving for receiving plug-in type cutter (15) and load the impact components (7) of this plug-in type cutter (15) in the axial direction, it is characterized in that, one grafting adapter (11) is removably inserted in this tool holder (3), described tool holder (3) it is positioned on 1/3rd of cutter receptor (14) at least axially length in this grafting adapter (11) internal when inserting, wherein, in order to avoid contacting with described impact components (7), the adapter handle (12) of this grafting adapter (11) is provided with the length of axial shortening.
2. cutter holding device according to claim 1, it is characterised in that described adapter handle (12) has locking element, and these locking elements are corresponding with the locking element in described tool holder.
3. cutter holding device according to claim 2, it is characterized in that, described tool holder (3) has the connecting portion (9) that the radial inward as locking element raises on inner side, and described adapter handle (12) has the corresponding groove for receiving this connecting portion (9).
4. the cutter holding device according to Claims 2 or 3, it is characterized in that, the axial length of described adapter handle (12) is so determined so that described adapter handle (12) when inserting less than the described locking element (9) in described tool holder (3).
5. the cutter holding device according to one of claims 1 to 3, it is characterised in that be provided with the recess (16) for receiving locking ball (6) in described adapter handle (12).
6. the cutter holding device according to one of claims 1 to 3, it is characterised in that described grafting adapter (11) has radially projecting flange (13).
7. cutter holding device according to claim 6; it is characterized in that; when inserting, the radially projecting flange (13) of described grafting adapter (11) abuts on the protective cover (17) on the end face of described tool holder (3).
8. the cutter holding device according to one of claims 1 to 3, it is characterised in that the cutter receptor (14) in described adapter handle (12) has non-circular interior cross section.
9. the cutter holding device according to Claims 2 or 3, it is characterized in that, the described locking element on described grafting adapter (11) be arranged on described adapter handle (12), be connected in the part on described cutter receptor (14) in the axial direction.
10. cutter holding device according to claim 8, it is characterised in that the cutter receptor (14) in described adapter handle (12) has the non-circular interior cross section of polygonal shape.
11. cutter holding device according to claim 10, it is characterised in that described non-circular interior cross section is hexagon.
12. grafting adapter, it is for the cutter holding device according to one of claim 1 to 11, this grafting adapter has cutter receptor (14), it is characterized in that, this cutter receptor (14) is so arranged in this grafting adapter (11), make when this grafting adapter is removably inserted in this tool holder (3), 1/3rd of this cutter receptor (14) at least axially length are positioned at described tool holder (3) internal.
13. hammer drill, it has the cutter holding device according to one of claim 1 to 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910028546 DE102009028546A1 (en) | 2009-08-14 | 2009-08-14 | Tool holding device for a hammer drill |
| DE102009028546.6 | 2009-08-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101992454A CN101992454A (en) | 2011-03-30 |
| CN101992454B true CN101992454B (en) | 2016-07-06 |
Family
ID=43086414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010254341.3A Expired - Fee Related CN101992454B (en) | 2009-08-14 | 2010-08-13 | Cutter holding device for hammer drill |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2283976A3 (en) |
| CN (1) | CN101992454B (en) |
| DE (1) | DE102009028546A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2602063A1 (en) * | 2011-12-10 | 2013-06-12 | Santo Pizzuto | Distancing disc for an impact drilling machine with SDS-max system |
| CN102922492A (en) * | 2012-10-08 | 2013-02-13 | 方大控股有限公司 | Rotatable chisel jacket assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818157A (en) * | 1986-12-31 | 1989-04-04 | James E. Scapillato | Quick-change adapter and tools for use with the adapter |
| CN1978148A (en) * | 2005-12-09 | 2007-06-13 | 松下电工株式会社 | Power impact tool adapter |
| CN101010163A (en) * | 2004-09-03 | 2007-08-01 | 罗伯特·博世有限公司 | Tool fitting, adapter and system with a tool fitting and an adapter |
| EP2087957A1 (en) * | 2008-02-05 | 2009-08-12 | Robert Bosch GmbH | Rotary tool system with centering member |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2640767A1 (en) * | 1976-09-10 | 1978-03-16 | Bosch Gmbh Robert | TOOL HOLDER ON A HANDHELD MACHINE |
| DE10044387A1 (en) * | 2000-09-08 | 2002-04-04 | Bosch Gmbh Robert | Tool holder for a hand machine tool |
| US6929266B2 (en) * | 2002-06-18 | 2005-08-16 | Black & Decker Inc. | Bit holder |
| DE102004030430A1 (en) * | 2004-06-24 | 2006-01-12 | Hilti Ag | Tool e.g. spiral drill, for drilling e.g. wood, has insert end including cylindrical bearing surface and two slots, and spherical segment is provided tangentially between slots, where slots run axially and lie opposite to each other |
| DE102006016804A1 (en) | 2006-04-10 | 2007-10-11 | Robert Bosch Gmbh | Tool holder for a hammer drill |
-
2009
- 2009-08-14 DE DE200910028546 patent/DE102009028546A1/en not_active Withdrawn
-
2010
- 2010-06-24 EP EP10167126A patent/EP2283976A3/en not_active Withdrawn
- 2010-08-13 CN CN201010254341.3A patent/CN101992454B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818157A (en) * | 1986-12-31 | 1989-04-04 | James E. Scapillato | Quick-change adapter and tools for use with the adapter |
| CN101010163A (en) * | 2004-09-03 | 2007-08-01 | 罗伯特·博世有限公司 | Tool fitting, adapter and system with a tool fitting and an adapter |
| CN1978148A (en) * | 2005-12-09 | 2007-06-13 | 松下电工株式会社 | Power impact tool adapter |
| EP2087957A1 (en) * | 2008-02-05 | 2009-08-12 | Robert Bosch GmbH | Rotary tool system with centering member |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2283976A2 (en) | 2011-02-16 |
| DE102009028546A1 (en) | 2011-02-17 |
| CN101992454A (en) | 2011-03-30 |
| EP2283976A3 (en) | 2012-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20180813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |