CN101670453B - Machine tool and method for producing same - Google Patents
Machine tool and method for producing same Download PDFInfo
- Publication number
- CN101670453B CN101670453B CN200910173067.4A CN200910173067A CN101670453B CN 101670453 B CN101670453 B CN 101670453B CN 200910173067 A CN200910173067 A CN 200910173067A CN 101670453 B CN101670453 B CN 101670453B
- Authority
- CN
- China
- Prior art keywords
- piston
- piston unit
- toolroom machine
- aforementioned
- receptacle
- 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.)
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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
- B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
-
- 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
- B25D17/24—Damping the reaction force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
- B25D2211/06—Means for driving the impulse member
- B25D2211/061—Swash-plate actuated impulse-driving mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2222/00—Materials of the tool or the workpiece
- B25D2222/21—Metals
- B25D2222/24—Aluminium
-
- 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
- B25D2250/065—Details regarding assembling of the tool
-
- 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
- B25D2250/391—Use of weights; Weight properties of the tool
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The present invention relates to a machine tool and a method for producing same. The machine tool comprises a driver (20) which comprises at least one axial driver (22) that is used for driving a tool (18). Additionally, the axial driver (22) comprises the following components: a motion transfer unit (30) which comprises a connecting mechanism (28), and piston units (32, 32a, 32b) which comprises containing parts (46, 47, 46a, 47a, 46b, 47b) and piston parts (54, 54a, 54b) with longitudinal axes (52, 52a, 52b). A connection mechanism (28) of the motion transfer unit (30) is connected with the piston units (32, 32a, 32b) at the containing parts (46, 47, 46a, 47a, 46b, 47b) through a connection pin (59). According to the proposal of the invention, the containing parts (46, 47, 46a, 47a, 46b, 47b) is provided with at least one containing part (60a, 60b, 61a, 61b) with a truncated ball shape, and connection parts (62a, 62b, 63a, 63b), wherein the containing part (60a, 60b, 61a, 61b) is connected with the piston parts (54a, 54b) through the connection parts (62a, 62b, 63a, 63b).
Description
Technical field
The present invention relates to the toolroom machine according to the type of independent claims and the manufacture method for toolroom machine.
Background technology
The toolroom machine with drive unit is known, and drive unit comprises at least one axial drive means for driven tool.Now, axial drive means has the movement transmission unit comprising bindiny mechanism.In addition, the piston unit of piston portion comprising receptacle and have longitudinal axis is provided with.In addition, known piston unit, the piston portion of especially known piston unit, has substantially cylindrical configuration, and it extends with cylinder symmetric form centered by longitudinal axis.The bindiny mechanism of movement transmission unit is connected with piston unit by connecting pin in the receptacle of piston unit.
The receptacle of piston unit is generally manufactured by finishing step.Now, in piston-cylinder, receiving opening is offered perpendicular to longitudinal axis.In addition, in one end of piston-cylinder, cutting goes out to cut with scissors nest.In most of the cases, hinge nest is the form of hinge recess, and therefore, piston unit has the receptacle that two almost symmetries are formed.
In toolroom machine, piston unit is generally driven by axial drive means to do basic axial reciprocating motion.In reciprocating turning point, occurred so-called inertia force inertia force in other words because of the inertia mass of piston unit, it may react on toolroom machine with vibration mode.Except except the velocity variations power of turning point, inertia force size also depends primarily on the inertia mass itself causing the reversing of motion.
Summary of the invention
Have and the advantage of the toolroom machine of the present invention of independent claims feature is, when the power of tool drives axial drive means is identical, occur less inertia force in reciprocating turning point.For this reason, the receptacle of piston unit has the basic receiving portion in interception shape and has coupling part.Receiving portion is now connected with piston portion by coupling part.Here, " in interception shape " refers in particular to glomeration, part intercepts ball shape, cylinder is hood-like or similar circular.The interception shape of receiving portion especially causes to form receiving portion with minimum material usage.So, the inertia mass of piston unit of the present invention will advantageously be reduced.
By the measure described in dependent claims, obtain favourable improvement and the improvement of the feature provided in the independent claim.
Obtain a particularly advantageous embodiment of inventive piston unit in the following manner, receiving portion has outer peripheral face substantially spherical in shape.
If receiving portion becomes to have the toroidal of cylindrical outer peripheral face substantially substantially, then another Favourable implementations of inventive piston unit will be obtained.
The bindiny mechanism of inventive piston unit and the movement transmission unit of axial drive means simple and effective acts on that to be connected be so realize, and namely receiving portion has the receiving opening for receiving connecting pin.Especially, when receiving opening is perpendicular to the receiving opening of the longitudinal axis of piston portion, also obtain the embodiment being easy to assemble.Now, receiving opening has axially bored line, and axially bored line, perpendicular to the longitudinal axis of piston portion, preferably intersects with it.Axially bored line and longitudinal axis now preferably determine the primary principal plane of piston unit.
Obtain the particularly preferred movement between the bindiny mechanism and inventive piston unit of movement transmission unit in the following manner, receptacle has hinge nest, and hinge nest extends in a recess plane perpendicular to piston portion longitudinal axis.Recess plane is preferably basically perpendicular to primary principal plane.
In a preferred embodiment of inventive article machine, be provided with two be especially arranged symmetrically with centered by piston portion longitudinal axis and the receiving portion preferably formed specular.Now, each receiving portion is connected with piston portion by a coupling part.Each receiving portion preferably respectively has a receiving opening.Especially, the orientation of axially bored line is now coaxial.
At one very preferably and in favourable embodiment, receptacle has the lateral extension of the longitudinal axis perpendicular to piston portion, lateral extension is less than piston portion diameter.Especially the lateral extension of receptacle will not be more than or equal to piston portion diameter.
If coupling part has narrowing portion, wherein the feature of narrowing portion has perpendicular to piston portion longitudinal axis, the lateral extension being less than the lateral extension perpendicular to piston portion longitudinal axis of receiving portion, then will obtain another Favourable implementations of piston unit.Especially narrowing portion has from the side face of piston portion, the basic surperficial section variation in spill.
In the embodiment of a low cost, the piston portion of piston unit and receptacle one are formed.
Obtain a very simple embodiment of inventive article machine in the following manner, piston unit is made up of metal material, especially aluminium base light metal or magnesium base light metal or corresponding light metal alloy.
In a preferred embodiment of toolroom machine according to the present invention, axial drive means is shock machine, especially air cushion impactor.The form of piston unit now in shock machine piston.
But, also can be formed with the form of saw according to toolroom machine of the present invention, wherein piston unit of the present invention is configured to the tool spindle of the axially reciprocating sawing drive unit.In addition, other embodiment of the toolroom machine of inventive piston unit can be adopted also to be feasible.
Another aspect of the present invention relates to for the manufacture method according to toolroom machine that is of the present invention, that have piston unit, wherein in one step, utilizes ELEMENTARY INTRODUCTION TO NON manufacture to have the piston unit of piston portion and receptacle.Especially, piston unit of the present invention can utilize casting, injection, die casting, powder die-casting or sintering process to manufacture.In particularly preferred embodiments, ELEMENTARY INTRODUCTION TO NON can be so-called MIM technique.
In a low-down embodiment of cost of manufacture method, this step is the unique operation for the manufacture of piston unit.
Accompanying drawing explanation
Embodiments of the invention shown in the drawings and illustrating in detail hereinafter, wherein:
Fig. 1 is that schematic side view is cutd open by the office of percussion drill;
Fig. 2 is according to the perspective view of the piston unit of prior art;
Fig. 3 a is the perspective side elevation view of the first embodiment of inventive piston unit;
Fig. 3 b is the partial enlarged view of the receptacle of piston unit according to Fig. 3 a;
Fig. 3 c is the side view of receptacle shown in Fig. 3 b;
Fig. 3 d is the sectional view of receptacle according to line A-A of Fig. 3 c;
Fig. 3 e is the sectional view of the B-B along the line of Fig. 3 c;
Fig. 4 a is the perspective view of the second embodiment of piston unit;
Fig. 4 b is the side view of piston unit shown in Fig. 4 a.
Detailed description of the invention
As the example of toolroom machine 10a, especially hand tool 10b, Fig. 1 diagrammatically illustrates percussion drill 10.Percussion drill 10 has fuselage 12.Tool holder 16 is provided with in the front end 14 of fuselage 12.Tool holder 16 is for receiving, especially removably receiving instrument 18.
In fuselage 12, be provided with drive unit 20, it comprises axial drive means 22.Now, drive unit 20 is effectively connected with the driving mechanism of instrument 18.Drive unit 20 also has CD-ROM drive motor 24, especially motor 26, and it is only schematically illustrated in FIG.In addition, axial drive means 22 is converted to axially-movable the rotation 100 of CD-ROM drive motor 24,26, axially reciprocating 102 especially substantially vertically.Axially reciprocating 102 is delivered to piston unit 32 by the bindiny mechanism 28 of movement transmission unit 30.
When percussion drill 10, piston unit 32 is formed with the form of the shock machine piston 34 of shock machine 36 especially air cushion impactor 38.Piston unit 32 can be arranged in percussion drill 10 in impact tube 42 with axial motion along tool axis 40.This shock machine 36,38 is fully open, therefore omits the description to its structure and working method at this.
The end 44 of stretching out from impact tube 42 of piston unit 32 is formed with the form of receptacle 46.Receptacle 46 has receiving opening 48.Connecting pin 50 is accommodated in receiving opening 48.Now, be bearing in this receiving opening to the especially rotatable motion of connecting pin 50.The bindiny mechanism 28 of movement transmission unit 30 is accommodated in one of connecting pin 50 in this unshowned bearing bore.In this way, the motion of bindiny mechanism 28, the especially basic gyration caused by axially reciprocating 102 along the axially extended bindiny mechanism 28 of tool axis 40 are delivered to piston unit 32.
Fig. 2 shows the piston unit 32 as known from prior art.Piston unit 32 now becomes cylindrical shape substantially.At this, cylindrical configuration itself is 52 extensions longitudinally.As seen in the view of Fig. 2, piston unit 32 has two receptacles 46,47.Receptacle 46,47 respectively has a receiving opening 48,49, and wherein receiving opening 48,49 is along axially bored line 51 orientation, especially coaxial with axially bored line 51.Axially bored line 51 and longitudinal axis 52 now define primary principal plane 104.
Except receptacle 46,47, piston unit 32 also comprises piston portion 54.In the present example, piston portion 54 becomes cylindrical shape completely and has cylinder diameter Dz.Receptacle 46,47 respectively has outer peripheral face 58, and this outer peripheral face is given prominence to outside piston portion 54 essentially smoothly, does not have the deviation with cylinder diameter Dz.
The longitudinal axis 52 perpendicular to piston unit is provided with and the hinge nest 56 extended perpendicular to axially bored line 51 between receptacle 46 and 47.Hinge nest 56 is now in substantially parallel relationship to a recess plane 106 determined perpendicular to primary principal plane 104 and by the intersection point of axially bored line 51 and longitudinal axis 52 and extends.Recess plane preferably at least extends along axially bored line 51 is symmetrical centered by recess plane 106.In the present example, cut with scissors nest 56 to make with the form of hinge recess.Bindiny mechanism 28 is inserted in hinge nest 56, as shown in Figure 1.
According in the embodiment of Fig. 2, receptacle 46,47, especially outer peripheral face 58 opposing pistons portion 54 in the region perpendicular to hinge nest has the cascaded surface of substantially flat.The occupation of land that this cascaded surface reduces piston unit 32 requires and allows the comparatively short axial spacing to drive unit 20.
Usually, piston unit 32 is made up of cylindrical blank.Receiving opening 48 is now formed with hole form, and cuts with scissors nest 56 and such as made by milling.Fact proved, the receptacle 46 produced like this is not best with regard to the moving-mass of piston unit 32.
Fig. 3 a represents first embodiment of inventive piston unit 32a with perspective side elevation view.Below, in the explanation to the first embodiment, all identical or act on identical feature there is suffix " a ".
Here, the piston portion 54a of piston unit 32a also becomes cylindrical shape substantially.Piston portion 54a is longitudinally 52a extension now.The receptacle 46a of piston unit 32a and 47a has the particularly spherical outer peripheral face 58a of substantially especially single interception shape.Now, single especially outer peripheral face 58a is interception shape substantially, especially spherical, except receiving opening 48a and 49a and hinge nest 56a.
Shown in as the clearest in Fig. 3 c, each receptacle 46a and 47a is divided into a receiving portion 60a and 61a and coupling part 62a and 63a.In the preferred embodiment of the first embodiment, especially receiving portion 60a and 61a has the especially spherical outer peripheral face 58a of single interception shape.Extend with cutting with scissors nest 56a specular because two receptacle 46a in the first embodiment are relative with the structure of 47a, so only will describe a receptacle 46a below, wherein this description similarly will be overlapped and be used another receptacle 47a.The main feature of receiving portion 60a is the especially spherical outer peripheral face 58a of single interception shape.In the embodiment according to Fig. 3 a, each receiving portion 60a, 61a are provided with planar end surface 65a, a 67a rearward.End face 65a, 67a are conducive to piston unit 32a compact conformation of the present invention to be installed in drive unit 20a.Outer peripheral face 58a has maximum lateral extension 64a, and it is less than the overall diameter 66a of piston portion 54a, is especially less than body diameter Dz.To this, lateral extension 64a refers to the transverse extent diameter in other words perpendicular to longitudinal axis 52a.Main feature as the region of the coupling part 62a between receiving portion 60a and piston portion 54a is narrowing portion 68a.The lateral extension 70a of narrowing portion 68a is now less than the lateral extension 64a of receiving portion 62a.
Fig. 3 d and Fig. 3 e represents two different sections of the end 44a of the piston unit 32a according to the first embodiment.Now, especially Fig. 3 d again show the especially single spherical configuration of single section of spherical configuration of the outer peripheral face 58a of receiving portion 60a.
Fig. 4 a represents second embodiment of piston unit 32b.In the following description, all examples with describing before are identical or act on identical feature and have suffix " b ".
Now, the difference of first embodiment of piston unit 32b and piston unit 32a is especially its receptacle 46a and 47a.Because two receptacle 46a are in a first embodiment relative with the structure of 47a cut with scissors nest 56b be specular extend, so only will describe a receptacle 46b below, wherein this description will similarly be overlapped and will be used another receptacle 47b.
Receiving portion 60b has substantially cylindrical outer peripheral face 58b.In the embodiment according to Fig. 4 a, on each receiving portion 60b and 61b, be provided with planar end surface 65b and 67b rearward.Planar end surface 65b and 67b is conducive to piston unit 32b compact conformation of the present invention to be installed in drive unit 20b.In receiving portion 60b, be also provided with the receiving opening 48b known from the first embodiment.Outer peripheral face 58b basic one-tenth centered by receiving opening 48b cylindrically extends.Especially, it is similar to and is coaxially formed with axially bored line 51b.One, receiving portion 60b is ear substantially thus.
The function of these two embodiments of piston unit 32a and 32b does not have difference with piston unit 32 conventionally substantially, because of omitted herein illustrate and see known prior art.
For making piston unit 32a and 32b of the present invention obtain less inertia mass, piston unit based on light metal as aluminium or magnesium or corresponding light metal alloy are made.
In addition, piston unit 32a and 32b of the first embodiment of inventive piston unit can manufacture when utilizing the turnery processing of cylinder blank very simply.And, piston unit 32a and 32b with piston portion 54a and 54b and receptacle 46a, 47a and 46b, 47b can be manufactured by casting, injection, die casting, powder die-casting or sintering.Especially, so-called MIM technique can advantageously be adopted here.Preferably come according to the technique that just can manufacture piston unit 32a and 32b without the need to other procedure of processing.
Except the embodiment shown in this, other Advantageous embodiments of inventive piston unit 32a and 32b can be obtained by combining feature described herein.
Especially, the present invention is not limited to always two especially receptacle 46a, 47a and 46b of two symmetry formations, piston unit 32a and 32b of 47b.In one of inventive piston unit 32a and 32b very light embodiment, piston unit can only have a receptacle 46a and 46b.Now, receptacle 46a and 46b can be formed as illustrated in the example illustrated, thus the bindiny mechanism 28 of movement transmission unit 30 similarly coaxially acts on longitudinal axis 52a, 52b with example described herein.In addition can specify, connecting pin 50 is connected with 46b or bindiny mechanism 28 with receptacle 46a, is especially fixedly connected with or is integrally formed.Alternatively, also can specify, receptacle 46a and 46b itself is approximate comprises the primary principal plane limited by axially bored line 51 and longitudinal axis 52a and 52b, thus the approximate symmetrical extension centered by longitudinal axis of receptacle 52a and 52b.In the case, receptacle 46a and 46b clamps in bindiny mechanism 28 may be favourable.
Claims (18)
1. a toolroom machine, comprise drive unit (20), this drive unit comprises at least one axial drive means (22) for driven tool (18), this axial drive means (22) has the movement transmission unit (30) that comprises bindiny mechanism (28), one comprises receptacle (46, 47, 46a, 47a, 46b, 47b) and there is longitudinal axis (52, 52a, piston portion (54 52b), 54a, piston unit (32 54b), 32a, 32b), the bindiny mechanism (28) of this movement transmission unit (30) is in receptacle (46, 47, 46a, 47a, 46b, 47b) by connecting pin (50) and this piston unit (32, 32a, 32b) be connected, it is characterized in that, receptacle (46, 47, 46a, 47a, 46b, 47b) there is the receiving portion (60a that at least one is interception shape substantially, 60b, 61a, 61b) with coupling part (62a, 62b, 63a, 63b), this receiving portion (60a, 60b, 61a, 61b) by this coupling part (62a, 62b, 63a, 63b) with this piston portion (54a, 54b) be connected, it is characterized in that, this coupling part (62a, 62b, 63a, 63b) there is narrowing portion (68a, 68b), the feature of this narrowing portion has perpendicular to piston unit (32a, longitudinal axis (52a 32b), 52b) lateral extension (the 70a of orientation, 70b), this lateral extension is less than this receiving portion (60a, 60b, 61a, 61b) perpendicular to piston unit (32a, 32b) longitudinal axis (52a, 52b) lateral extension (the 64a of orientation, 64b), wherein, this narrowing portion has from the side face of piston portion, the basic surperficial section variation in spill, wherein, this receiving portion (60a, 60b, 61a, 61b) having basic is spherical outer peripheral face (58a, 58b).
2. according to aforementioned toolroom machine according to claim 1, it is characterized in that, this receiving portion (60a, 60b, 61a, 61b) has receiving opening (48a, 49a, 48b, 49b).
3. according to aforementioned toolroom machine according to claim 1, it is characterized in that, this receptacle (46a, 47a, 46b, 47b) there is hinge nest (56a, 56b), this hinge nest is at a longitudinal axis (52a perpendicular to this piston unit (32a, 32b), extend in recess plane (106a, 106b) 52b).
4. according to aforementioned toolroom machine according to claim 1, it is characterized in that, be provided with two receiving portions (60a, 60b, 61a, 61b), they are respectively by a coupling part (62a, 62b, 63a, 63b) and this piston portion (54a; 54b) be connected.
5. according to aforementioned toolroom machine according to claim 1, it is characterized in that, this receptacle (46a, 47a, 46b, 47b) have perpendicular to piston unit (32a, the lateral extension (64a, 64b) of longitudinal axis (52a, 52b) 32b), this lateral extension is less than the diameter (66a, 66b) of this piston portion.
6. according to aforementioned toolroom machine according to claim 1, it is characterized in that, the piston portion (54a, 54b) of this piston unit (32a, 32b) and this receptacle (46a, 47a, 46b, 47b) one are formed.
7. according to aforementioned toolroom machine according to claim 1, it is characterized in that, this piston unit (32a, 32b) is made up of metal material.
8. according to aforementioned toolroom machine according to claim 1, it is characterized in that, axial drive means (22) is shock machine (36), and piston unit (32a, 32b) is shock machine piston (34).
9. toolroom machine according to claim 2, is characterized in that, this receiving opening is perpendicular to this piston unit (32a, longitudinal axis (52a, 52b) 32b) and for receiving receiving opening (48a, the 49a of connecting pin (50), 48b, 49b).
10. according to aforementioned toolroom machine according to claim 4, it is characterized in that, two receiving portions are symmetrical arranged around the longitudinal axis (52a, 52b) of piston unit (32a, 32b).
11., according to aforementioned toolroom machine according to claim 10, is characterized in that, two receiving portions are specular.
12. according to aforementioned toolroom machine according to claim 5, it is characterized in that, receiving portion (60a, 60b, 61a, 61b) have perpendicular to piston unit (32a, the lateral extension (64a, 64b) of longitudinal axis (52a, 52b) 32b), this lateral extension is less than the diameter (66a, 66b) of this piston portion.
13., according to aforementioned toolroom machine according to claim 7, is characterized in that, this piston unit (32a, 32b) is made up of aluminium base light metal or magnesium base light metal or corresponding light metal alloy.
14., according to aforementioned toolroom machine according to claim 8, is characterized in that, axial drive means is air cushion impactor (38).
15. 1 kinds manufacture according in any one of the preceding claims wherein, comprise piston unit (32a, the manufacture method of toolroom machine 32b), it is characterized in that, one step by step in, ELEMENTARY INTRODUCTION TO NON manufacture technics is utilized to have piston portion (54a, 54b) with receptacle (46a, 47a, 46b, piston unit (32a 47b), 32b), wherein, described narrowing portion is made to have from the side face of piston portion, the basic surperficial section variation in spill, wherein, this receiving portion (60a, 60b, 61a, 61b) having basic is spherical outer peripheral face (58a, 58b).
16. manufacture methods according to claim 15, is characterized in that, ELEMENTARY INTRODUCTION TO NON technique is casting, injection, die casting or sintering process.
17. manufacture methods according to claim 16, is characterized in that, ELEMENTARY INTRODUCTION TO NON technique is powder die-casting technique.
18. according to claim 15 to the manufacture method one of 17 described, and it is characterized in that, this is unique processing step of the manufacture for piston unit (32a, 32b) step by step.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008041889.7 | 2008-09-09 | ||
| DE102008041889A DE102008041889A1 (en) | 2008-09-09 | 2008-09-09 | Machine tool and manufacturing method for a machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101670453A CN101670453A (en) | 2010-03-17 |
| CN101670453B true CN101670453B (en) | 2015-03-11 |
Family
ID=41009945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910173067.4A Active CN101670453B (en) | 2008-09-09 | 2009-09-08 | Machine tool and method for producing same |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2161108B1 (en) |
| CN (1) | CN101670453B (en) |
| AT (1) | ATE509738T1 (en) |
| DE (1) | DE102008041889A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111127C2 (en) * | 1990-04-05 | 1997-05-22 | Makita Corp | Impact tool that can be used without impact |
| US5816341A (en) * | 1995-11-27 | 1998-10-06 | Black & Decker Inc. | Hammer mechanism |
| EP1413401B1 (en) * | 2002-10-23 | 2006-01-04 | Black & Decker Inc. | Piston and trunnion assembly in a power hammer and method of their assembly |
| DE102007010181A1 (en) * | 2007-03-02 | 2008-09-04 | Robert Bosch Gmbh | Hand tool comprises a striking unit with a hammer piston having a contact point and an active base surface forming an axial distance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2038986B (en) * | 1978-12-13 | 1983-05-05 | Black & Decker Inc | Converting rotary motion to reciprocatory motion |
| DE19726272A1 (en) * | 1997-06-20 | 1999-01-07 | Wacker Werke Kg | Single-sided air spring striking mechanism with idle condition |
| DE19828423C2 (en) * | 1998-06-25 | 2000-05-18 | Wacker Werke Kg | Driving piston for an air spring hammer mechanism |
| DE102009027560A1 (en) * | 2009-07-09 | 2011-01-13 | Robert Bosch Gmbh | Hammer drill and / or chisel device |
-
2008
- 2008-09-09 DE DE102008041889A patent/DE102008041889A1/en not_active Withdrawn
-
2009
- 2009-07-09 EP EP09164985A patent/EP2161108B1/en active Active
- 2009-07-09 AT AT09164985T patent/ATE509738T1/en active
- 2009-09-08 CN CN200910173067.4A patent/CN101670453B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111127C2 (en) * | 1990-04-05 | 1997-05-22 | Makita Corp | Impact tool that can be used without impact |
| US5816341A (en) * | 1995-11-27 | 1998-10-06 | Black & Decker Inc. | Hammer mechanism |
| EP1413401B1 (en) * | 2002-10-23 | 2006-01-04 | Black & Decker Inc. | Piston and trunnion assembly in a power hammer and method of their assembly |
| DE102007010181A1 (en) * | 2007-03-02 | 2008-09-04 | Robert Bosch Gmbh | Hand tool comprises a striking unit with a hammer piston having a contact point and an active base surface forming an axial distance |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2161108B1 (en) | 2011-05-18 |
| CN101670453A (en) | 2010-03-17 |
| ATE509738T1 (en) | 2011-06-15 |
| DE102008041889A1 (en) | 2010-03-11 |
| EP2161108A1 (en) | 2010-03-10 |
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