CN101045259A - Drilling machine tool - Google Patents
Drilling machine tool Download PDFInfo
- Publication number
- CN101045259A CN101045259A CNA200710089015XA CN200710089015A CN101045259A CN 101045259 A CN101045259 A CN 101045259A CN A200710089015X A CNA200710089015X A CN A200710089015XA CN 200710089015 A CN200710089015 A CN 200710089015A CN 101045259 A CN101045259 A CN 101045259A
- Authority
- CN
- China
- Prior art keywords
- tool holder
- drilling machine
- tool
- drive spindle
- torque
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 230000000295 complement effect Effects 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/38—Chucks with overload clutches
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/165—Overload clutches, torque limiters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
本发明涉及一种钻孔工具机(2)，尤其是锤钻，具有一个壳体(4)和一个由该壳体伸出的驱动主轴(6)和一个可装配到驱动主轴(6)上并且能取下的刀具夹头(8)，后者具有一个可手动操作的锁止－及释放机构(10)，以便将刀具夹头(8)沿着轴向形锁合地装配到驱动主轴(6)上或使之释放，该钻孔工具机还具有一个联接装置(19)，用于实现驱动主轴(6)与刀具夹头(8)之间的旋转联接，该钻孔工具机还具有一个过载离合器(32)，用于限制冲击式出现的反转力矩。本发明提出，该过载离合器(32)在壳体(4)之外设置在刀具夹头(8)中并且在由制造商预先给定但使用者不能改变的旋转力矩被超过时，使旋转联接解除。
The invention relates to a drilling machine tool (2), in particular a hammer drill, with a housing (4) and a drive spindle (6) protruding from the housing and a and a removable tool holder (8) with a manually operable locking-and-release mechanism (10) for positively fitting the tool holder (8) axially to the drive spindle ( 6) or make it released, the drilling machine also has a coupling device (19), used to realize the rotational coupling between the drive spindle (6) and the tool holder (8), the drilling machine also has An overload clutch (32) is used to limit the counter-rotating torque that occurs in an impulsive manner. The invention proposes that the overload clutch ( 32 ) is arranged outside the housing ( 4 ) in the tool holder ( 8 ) and, when a rotational torque predetermined by the manufacturer but cannot be changed by the user is exceeded, causes the rotational coupling lifted.
Description
Technical field
The present invention relates to a kind of drilling machine tool, especially hammer drill, it has a housing and a drive shaft of being stretched out by this housing, and cutter chuck that can be assemblied on this drive shaft and can take off from it, this cutter chuck has the locking that can manually control-and relieving mechanism, so that cutter chuck is assembled on the drive shaft or escapes along axial shape sealedly, this drilling machine tool also has a coupling arrangement, be used to realize that drive shaft connects with rotation between the cutter chuck, this drilling machine tool also has a safety clutch, is used to limit the torque reaction that impact type occurs.The percussion drill of the above-mentioned type is disclosed by the applicant and other suggestion people repeatedly.Such as, the applicant provides be suitable for holing hammer drill UHE, the KHE of operation and impact type boring operation, they also are known as the multipurpose hammer or (seeing up-to-date Metabo Hauptkatalog 2005/2006) hammered in combination into shape.In these hammer drills, in order to limit the torque reaction that impact type occurs, in the transmission mechanism of drilling machine tool, just in the enclosure interior of drilling machine tool, driving path between motor and drive shaft, be provided with a safety clutch.This torque reaction is stuck under the situation in the bar-mat reinforcement when drilling tool or hammer drill cutter are carrying out broken work and occurs.
Background technology
Under the typical situation, this drilling machine tool uses different cutters to carry out work.Under the situation of using hammer bit (generally having SDS-plug-in type end), the torque that is under normal circumstances occurred when using hammer drill is relatively little, and operating personnel apply very little countertorque to these need when work.If hammer bit for example is stuck among the bar-mat reinforcement, the torque reaction that then acts on the operating personnel suddenly raises.So the triggering torque of safety clutch should be relatively low for this applicable cases.But, a lower triggering torque makes with other cutters, such as the work change difficulty that edge bores circular drill bit (Bohrkronen) or spiral bit, and is perhaps simply infeasible.In other words, when using edge circular drill bit of brill or spiral bit to carry out work, needed torque is higher than the situation of using hammer bit work significantly.Under this working condition, operating personnel also intuitively prepare the higher anti-torque of reply.Therefore, under such applicable cases, can use the safety clutch with higher triggering torque, this not only has Practical significance, and can influence operating personnel's safety sharply.
The applicant has set forth following suggestion by undocumented European patent application EP 05010813.3 still: will be used to realize that the coupling arrangement that drive shaft connects with rotation between the cutter chuck is configured to safety clutch simultaneously, and can be triggered the adjusting of torque by a torque adjustment apparatus by operating personnel.But, having exposed like this is not inappreciable danger,, may give the triggering torque that makes mistake that is, and this is proved to be problematic.
Summary of the invention
Target of the present invention is: proceed to improve for drilling machine tool, especially hammer drill or impact drill, make it consider specific security requirement better according to the situation of employed cutter and cutter chuck.
According to the present invention, in the drilling machine tool of the above-mentioned type, the method that reaches this target is: with safety clutch in the outer setting of housing among cutter chuck, and when and torque that user can't make it change given in advance by the producer are exceeded, rotation connects and is disengaged.According to the present invention, safety clutch is by stretching out in the housing (as known drilling machine tool before this), and transfers among the cutter chuck.There is such possibility thus, promptly, under the situation of the different cutter chucks that is respectively applied for special insertion tool, this safety clutch is correspondingly constructed special requirement by manufacturer, makes the user can not provide inappropriate triggering torque more in advance when using the cutter chuck of determining.Thus, improve the reliable rows of operation on the one hand, can create best condition of work at employed different insertion tools on the other hand.In hammer drill, usually provide a kind of so-called hammer chuck for hammer bit or other the cutter class cutter that has SDS-plug-in type end usually by manufacturer.These be specially adapted to have corresponding cutters hammer drill cutter chuck and wherein integrated safety clutch designed like this, make safety clutch at a relatively low triggering torque value---such as 10Nm---when being exceeded, will disconnect with drive shaft between rotation connect.But, be in the safety clutch under this disengaged condition, when promptly safety clutch " skids ", still can transmit an excess torque.
In order to use other insertion tools, for example hammer bit or edge bore circular drill bit, according to the present invention, provide other cutter chuck, they have and are the special predefined triggering torque of these purposes, and this triggering torque can not be by user's change.Other interchangeable chuck, for example be used for other cutters, for example have for example be determined the quick clamp drill clamping head or the gear ring drill chuck that are used at the round shank that does not have to impact or work during the hammering function can be with other triggering torque structure.
Generally, provided the structure of the reliable more and drilling machine tool that is suitable for working in the best condition of a kind of work.
Also can consider to be similar to still undocumented EP 05010813.3 ground in principle and construct described safety clutch, its mode is: when the triggering torque was exceeded, a pressing body direct and the drive shaft mating reaction can move among the off-position.The mode that it is also conceivable that another kind of dominance is: all parts of safety clutch all are configured to the member of cutter chuck, and can take off from drive shaft with this cutter chuck.Under these circumstances, can all use same rotation clutch and drive shaft to carry out clutch all the time for different cutter chucks, and the enforcement of overload clutch and settle can be at the slave end of rotation clutch, between drive shaft and cutter chuck.Proved already: simple especially, therefore favourable rotation clutch is: drive shaft have non-circular, especially polygon-shaped circumferential groove and with cutter chuck on the inner periphery section of shape complementarity constitute shape sealed take rotary device.
Consider the structure of the load that the abrasion of safety clutch is few and as far as possible little, a slip-clutch that radially works is proved to be favourable.Though also can consider the safety clutch that axially works in principle; But when using drilling machine tool, this safety clutch but must additionally bear the load of axially going up effect in this case.A favourable embodiment of the present invention is designed like this, make one of cutter chuck to surround drive shaft and be in slip-clutch that radially outward acts on of a secondary part formation of drive part that rotation connects and cutter chuck with drive shaft, this secondary part is surrounded drive part diametrically in the outside.
In addition; also the rights protection requirement is proposed for a kind of drilling machine tool; it has a set (Sachgesamheit) of being made up of a plurality of different cutter chucks; wherein; described multiple different cutter chuck has a safety clutch that is arranged in the cutter chuck respectively; and in these cutter chucks, by manufacturer given in advance and the user can't change torque be different, safety clutch makes rotation connect when reaching described torque and removes.
Description of drawings
Other features of the present invention, details and advantage provide in other application documents, and provide in the explanation about the diagram of a preferred embodiment of drilling machine tool of the present invention and back.Shown in the figure be:
The show in schematic partial sections of Fig. 1 drilling machine tool of the present invention, it has a hammer drill cutter chuck;
The dissect cutaway view on plane of Fig. 2 II-II in Fig. 1, and
The schematic side elevation of Fig. 3 drilling machine tool of the present invention, it has a gear ring cutter chuck.
The specific embodiment
Provided the drilling machine tool of using a hammer drill form of reference number 2 signs generally in the accompanying drawing, it has a housing 4 and one by the drive shaft 6 of stretching out in the housing 4 and a cutter chuck 8, and the latter can be assembled to drive shaft 6 and get on and can take off from this drive shaft.For this reason, being provided with one can be manually and the locking and the relieving mechanism 10 of operation by the seat of one's pants, here it comprises two pressing bodies 12 that are configured to ball in the example of being given, they are inserted into the circumferential groove 14 of drive shaft 6 from a side opposite on the end opposite of diameter, so that cutter chuck 8 shapes are fixed on the drive shaft 6 sealedly.For cutter chuck 8 is disassembled from drive shaft 6 vertically, be provided with one towards the adjustable ring 16 of locking direction by springs preload, when the rotation of the described springs preload of opposing ground, this adjustable ring upwards is in the spatial accommodation in the outside for pressing body 12 provides a footpath, when with cutter chuck 8 axially when drive shaft 6 is pulled out, pressing body 12 can be squeezed in this spatial accommodation, thus, the sealed connection of shape of axially going up between the circumferential groove 14 of pressing body 12 and drive shaft 6 is disengaged.
Mention clearly: the structure of above-described safety clutch 32 also can be other modes, the especially driving by axial action-and drive element.In addition, can use axial or radially movable pressing body, they are under the prestrain, wherein, when being exceeded by the predefined triggering torque of manufacturer, these pressing bodies just arrive a position that makes drive shaft connect releasing with the rotation between the cutter chuck.
Among Fig. 1 with for example and the mode of hint property provided the cutter chuck 8 of a hammer chuck form, be used to have the cutter of the plug-in type end of SDS or SDS+, these plug-in type ends just in time be for the hammer drill operating mode determined.In contrast to this, Fig. 3 has schematically provided the cutter chuck of another gear ring one pawl formula drill chuck form, and it is determined with special size and is used for and is suitable for use in the cutter with round shank.Cutter chuck shown in Figure 3 has a safety clutch of realizing in cutter chuck 8 aspect the manufacturer, such as with the type shown in aspect Fig. 1, but compare with the safety clutch 32 of cutter chuck 8 shown in Figure 1, and its overload torque is different.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006015274.3 | 2006-04-01 | ||
| DE200610015274 DE102006015274B4 (en) | 2006-04-01 | 2006-04-01 | drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101045259A true CN101045259A (en) | 2007-10-03 |
Family
ID=38460269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710089015XA Pending CN101045259A (en) | 2006-04-01 | 2007-03-29 | Drilling machine tool |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101045259A (en) |
| DE (1) | DE102006015274B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012119312A1 (en) * | 2011-03-10 | 2012-09-13 | Bosch Power Tools (China) Co., Ltd. | Safety clutch |
| CN111230813A (en) * | 2018-11-29 | 2020-06-05 | 罗伯特·博世有限公司 | Hand-held power tool system and tool attachment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006020925B4 (en) * | 2006-05-05 | 2008-01-31 | Metabowerke Gmbh | Drilling tool device, in particular hammer drill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19717465B4 (en) * | 1997-04-25 | 2005-08-04 | Robert Bosch Gmbh | Power tool |
-
2006
- 2006-04-01 DE DE200610015274 patent/DE102006015274B4/en not_active Expired - Fee Related
-
2007
- 2007-03-29 CN CNA200710089015XA patent/CN101045259A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012119312A1 (en) * | 2011-03-10 | 2012-09-13 | Bosch Power Tools (China) Co., Ltd. | Safety clutch |
| CN111230813A (en) * | 2018-11-29 | 2020-06-05 | 罗伯特·博世有限公司 | Hand-held power tool system and tool attachment |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006015274A1 (en) | 2007-10-04 |
| DE102006015274B4 (en) | 2008-04-24 |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |