CN100532024C - Tool clamping device - Google Patents
Tool clamping device Download PDFInfo
- Publication number
- CN100532024C CN100532024C CNB2004100749628A CN200410074962A CN100532024C CN 100532024 C CN100532024 C CN 100532024C CN B2004100749628 A CNB2004100749628 A CN B2004100749628A CN 200410074962 A CN200410074962 A CN 200410074962A CN 100532024 C CN100532024 C CN 100532024C
- Authority
- CN
- China
- Prior art keywords
- jacket wall
- cutter
- holding device
- tool
- cutter holding
- 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
- 230000008676 import Effects 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 208000034189 Sclerosis Diseases 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- B25D17/08—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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/008—Chucks; Expansion mandrels; Adaptations thereof for remote control with arrangements for transmitting torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
- B25B13/065—Spanners; Wrenches with rigid jaws of socket type characterised by the cross-section of the socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2265/00—Details of general geometric configurations
- B23B2265/32—Polygonal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2265/00—Details of general geometric configurations
- B23B2265/32—Polygonal
- B23B2265/326—Hexagonal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The present invention relates to a cutter clamping device which is used for the portable machine tool, especially the hammer drill for transmitting torque, and the tool clamping device comprises a polygonal receiving sleeve (11) which is limited by the sleeve walls (14) that intersect from one another at the edge and a cutter handle (12) that is used for leading in the cutter and has same edge number. In order to realize that when the torque is transmitted the cutter handle (12) exerts surface load to the sleeve wall (14) and thereby increasing the stability of the cutter clamping device, each sleeve wall (14) is arranged with a slope (16) which gradually stretches the receiving sleeve (11) in the area (b) adjacent to the sleeve wall (14) that leads in the rotation direction (15).
Description
Technical field
The present invention relates to be used for the portable dam machine, be particularly useful for a cutter holding device percussive drill, that transmitting torque is used, have a polygon and receive cover, be used to import cutter, the shank of tool of drill bit especially with same edge number, this reception cover constitutes gauge by the jacket wall that intersects each other on described arris.
Background technology
The known tool clamping device (DE 2551125C2) that is used for percussive drill has as a concentric holes that receives cover, inserts the shank of tool of the cutter of a so-called SDS-Plus in this hole.At structure on the shank of tool opposed on first diagonal, two grooves of two-sided sealing are in the axial direction arranged, in these grooves, be inserted with configuration give they, pass jacket wall and extend into the locking ball that receives the cutter holding device in the cover.Also be provided with rotating drive groove opposed, that import in shank of tool end on second diagonal on the shank of tool except that groove, these grooves have two sides of at least roughly radially extending with opening.Work ordinatedly with the corresponding surface that is arranged on strip rotary driver on the cylindrical jacket wall in these flat sides.Therefore, always the shank of tool is axially movably remained in the cutter holding device and by the locking ball with preventing from and fixes, and rotates by the driving that rotary driver is implemented on the cutter holding device rotation direction.
On the cutter holding device of certain type, abandoned (verzichten) each other the rotary driver of opposed configuration diagonally, overlapped and replace it and constitute hexagon or hexagonal reception.Correspondingly, the shank of tool also has hexagon or hexagonal cross section.Need between the jacket wall of the shank of tool and reception cover, be provided with a gap value for the shank of tool being imported cutter holding device.When being in the cutter that acts on mutually with workpiece and rotating when the cutter holding device band, the shank of tool and cutter holding device will relatively rotate.The arris of the shank of tool receives the line contact that sleeve makes progress and contacts with the jacket wall formation of cutter holding device by extending in the case.By vibration, impact and the pressure of portable dam machine, the arris of the shank of tool will dig in the thin hardened surface of jacket wall.This will cause the widening and cutter holding device and bigger the relatively rotating of the shank of tool of gap value between the shank of tool and the jacket wall.Cutter holding device is continued wearing and tearing and will be caused entirely ineffectively after the short time, and at this moment the shank of tool finally can freely rotate in cutter holding device.
Summary of the invention
According to the present invention, proposed a kind ofly to be used for the portable dam machine, to be particularly useful for a cutter holding device percussive drill, that transmitting torque is used, have a polygon and receive cover, be used to import cutter, the shank of tool of drill bit especially with same edge number, this reception cover constitutes gauge by the jacket wall that intersects each other on described arris, wherein: each jacket wall is provided with a slope that makes cumulative ground of described reception cover broadening towards this jacket wall in the subregion adjacent with the jacket wall of in rotational direction going up leading.
The cutting tool according to the present invention clamping device has its advantage, promptly, the shank of tool can not form described straight line load when rotating when being driven by cutter holding device, but form the face load that imposes on jacket wall by driven shank of tool, based on the thrust that is distributed in now on the large tracts of land working life of cutter holding device is greatly improved thus.The lubricating oil film that is provided with between the shank of tool and jacket wall can reduce the face friction in the case.Can abandon overlapping the sclerosis of wall surface in addition, this will cause the decline of manufacturing cost.Can use a kind of material of economy equally.
Advantageously: described reception cover constitutes gauge for the jacket wall that hexagon reaches by six hexagonal angles that incline towards each other.
Description of drawings
To describe the present invention in detail by the embodiment who is described below shown in the accompanying drawing in the following description.Accompanying drawing is:
Fig. 1: the cross-sectional view of the part of a cutter holding device,
Fig. 2: the identical view that wherein is equipped with cutter holding device among Fig. 1 of cutter.
The specific embodiment
The cutter holding device of the portable dam machine of representing with the cross section of part among Fig. 1 is used for the transmission of torque of the rotation drive shaft that will be connected with cutter holding device to the cutter that is received in cutter holding device.For example this portable dam machine is that percussive drill and the cutter that is received in the cutter holding device are drill bit, and this drill bit additionally also can drive axially being impacted ground.
This cutter holding device has a polygonal or polygon reception cover 11, is used to insert a shank of tool 12 (Fig. 2), and this tool bar has with receiving and overlaps 11 identical limit numbers.In the case, the shank of tool 12 accurately is received in the reception cover 11 for inserting required gap value 13 ordinatedly with one at the most.Receive the hexagon that cover 11 is a symmetry in this embodiment, the shank of tool 12 also has hexagon thus.Therefore receiving cover 11 is gauge with six jacket walls 14 that intersect each other into hexagonal angle altogether, and the structure of all these jacket walls is identical.
If cutter holding device is driven on the direction of arrow 15 and rotates, then the shank of tool 12 is driven by cutter holding device receiving 11 1 very little backs that relatively rotate of cover relatively.In order to realize the high stability of cutter holding device, each jacket wall 14 is provided with one and makes the slope 16 that receives cover 11 cumulative ground broadenings towards this jacket wall 14 in a subregion adjacent with the jacket wall 14 of in rotational direction going up leading.The width of the subregion that is provided with this slope 16 of jacket wall 14 is represented with b in Fig. 1.These slopes 16 are used for: when driving the shank of tool 12 on the rotation direction 15 of cutter holding device, the shank of tool 12 since gap value 13 can not with its arris linearity be pressed on the jacket wall 14, but rest on the slope that in rotational direction is arranged in the forward part zone 16 of jacket wall 14 planely.Realized the plane load of jacket wall 14 thus, and compared that this can cause the substance of jacket wall 14 wearing and tearing to reduce, and causes the obvious raising in service life and the raising of cutter holding device stability thus by the straight line load of the angle rib of the shank of tool 12.If also consider between the shank of tool 12 and jacket wall 14, to be provided with lubricating oil film, then can reduce the face friction.As the result of 14 loads of jacket wall of realizing by slope 16, can abandon the required usually surface sclerosis of jacket wall 14, processing cost is reduced.
The present invention is not limited on the described embodiment.For example the limit number that receives the cover 14 and the shank of tool 12 can be selected arbitrarily, can have three, four, five or more limit as receiving the cover 14 and the shank of tool.
Claims (4)
1. be used for the portable dam machine, the cutter holding device that transmitting torque is used, have a polygon and receive cover (11), be used to import a shank of tool (12) of cutter with same edge number, this reception cover constitutes gauge by the jacket wall that intersects each other (14) on arris, it is characterized in that: each jacket wall (14) is provided with a slope (16) that makes cumulative ground of described reception cover (11) broadening towards this jacket wall (14) in the adjacent subregion (b) of the jacket wall (14) of (15) last leading with in rotational direction, wherein, the width b of the described subregion (b) of this jacket wall (14) is constructed to half less than this jacket wall (14) width.
2. according to the cutter holding device of claim 1, it is characterized in that: described reception cover (11) constitutes gauge for the jacket wall (14) that hexagon reaches by six hexagonal angles that incline towards each other.
3. according to the cutter holding device of claim 1, it is characterized in that: described portable dam machine is a percussive drill.
4. according to the cutter holding device of claim 1, it is characterized in that: described cutter is a drill bit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10340164.4 | 2003-09-01 | ||
| DE2003140164 DE10340164A1 (en) | 2003-09-01 | 2003-09-01 | Tool holder for hand tools has multi-angled socket shaft defined by shaft walls which each widen out in one part to increase socket shaft in respect of tool shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590035A CN1590035A (en) | 2005-03-09 |
| CN100532024C true CN100532024C (en) | 2009-08-26 |
Family
ID=34202288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100749628A Expired - Fee Related CN100532024C (en) | 2003-09-01 | 2004-09-01 | Tool clamping device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005074622A (en) |
| CN (1) | CN100532024C (en) |
| DE (1) | DE10340164A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE480353T1 (en) * | 2005-07-21 | 2010-09-15 | Pinto Spa Mario | TOOL CLAMPING DEVICE FOR MACHINE TOOLS |
| DE102006016804A1 (en) * | 2006-04-10 | 2007-10-11 | Robert Bosch Gmbh | Tool holder for a hammer drill |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735028B2 (en) * | 1988-03-04 | 1995-04-19 | 日立工機株式会社 | Rotational impact transmission member of impact tool |
| FR2692187B1 (en) * | 1992-06-16 | 1997-06-20 | Montabert Ets | DEVICE FOR HOLDING THE TOOL OF A HYDRAULIC ROCK BREAKER. |
-
2003
- 2003-09-01 DE DE2003140164 patent/DE10340164A1/en not_active Withdrawn
-
2004
- 2004-08-24 JP JP2004244137A patent/JP2005074622A/en active Pending
- 2004-09-01 CN CNB2004100749628A patent/CN100532024C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1590035A (en) | 2005-03-09 |
| DE10340164A1 (en) | 2005-03-24 |
| JP2005074622A (en) | 2005-03-24 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20130901 |