CN101733735A - Hand-held machine tool device - Google Patents
Hand-held machine tool device Download PDFInfo
- Publication number
- CN101733735A CN101733735A CN200910225001A CN200910225001A CN101733735A CN 101733735 A CN101733735 A CN 101733735A CN 200910225001 A CN200910225001 A CN 200910225001A CN 200910225001 A CN200910225001 A CN 200910225001A CN 101733735 A CN101733735 A CN 101733735A
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- China
- Prior art keywords
- hand
- machine tool
- adjusting
- tool device
- held machine
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims description 28
- 238000009527 percussion Methods 0.000 claims description 18
- 230000001133 acceleration Effects 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000003116 impacting effect Effects 0.000 claims description 4
- 201000007094 prostatitis Diseases 0.000 claims 2
- 238000004364 calculation method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000007789 sealing Methods 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
- B25D17/24—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
- B25D2211/068—Crank-actuated impulse-driving mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0084—Mode-changing mechanisms
-
- 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
- B25D2250/195—Regulation means
-
- 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
- B25D2250/221—Sensors
Abstract
The present invention relates to a hand-held machine tool device which is provided with at least one impact device. The present invention proposes a technical solution that the impact device is provided with an adjusting device for adjusting at least one impact characteristic quantity.
Description
Technical field
The present invention relates to a kind of hand-held machine tool device.
Background technology
A kind of hand-held machine tool device that has at least one percussion mechanism has been proposed.
Summary of the invention
The present invention relates to a kind of hand-held machine tool device that has at least one percussion mechanism.
The present invention proposes: percussion mechanism has adjusting device, and this adjusting device is provided for regulating at least one and impacts characteristic quantity." impact characteristic quantity " should especially be interpreted as the operation effect, for example vibration, acceleration, pressure, percussion and/or those skilled in the art think significant other effect, wherein, this adjusting device especially is provided for regulating this impact characteristic quantity by the frequency change of percussion mechanism and/or the rotation speed change of motor.At this, motor can be by air motor or especially advantageously is made of motor." setting " should especially be interpreted as special equipment, design and/or programming.Can almost irrespectively optimize percussion mechanism by the adjusting of at least one being impacted characteristic quantity by structure with the characteristic of workpiece by hand-held machine tool device of the present invention.
Propose in addition: described adjusting device has computing unit, and this computing unit is provided for determining according at least one parameter at least one feedback quantity of impact characteristic quantity at least." computing unit " should especially be interpreted as microcontroller, and this microcontroller has processor, memory cell and has and is stored in the working procedure in this memory cell and/or is stored in the calculation routine in this memory cell and/or regulates routine.In this article, " parameter " should especially be interpreted as value relevant with internal influence and/or external action, that record and/or value curve in running, and it has been described at least one at least in part and has impacted characteristic quantity.Internal influence is the temperature of the parts of hand held power machine and/or lubricated especially.External action is cutter and/or workpiece and/or operator especially.In this article, the information that " feedback quantity " especially is interpreted as calculating about the impact characteristic quantity, it can be used for regulating the impact characteristic quantity.By determining to impact characteristic quantity, this adjusting can be included in various parameters in the adjusting and can design flexibly especially.
Propose in addition: adjusting device has the adjusting routine, and this adjusting routine is provided for regulating at least one about at least one operating point and impacts characteristic quantity." adjusting routine " especially is interpreted as such routine, and this routine is carried out for the necessary calculating of the adjusting in the running and provided the result.Regulating routine advantageously moves on computing unit." operating point " especially is interpreted as a kind of running status, and at least one impact characteristic quantity is in operation and is adjusted on the predetermined value curve in this running status.The operating point preferably has nominal curve and/or the rated value that impacts characteristic quantity.Therefore, can realize efficient especially and/or to operator close friend's hand-held machine tool device.
Propose in addition: this adjusting device has at least one measurement mechanism, makes adjusting device and measurement mechanism advantageously to coordinate mutually.At this, measurement mechanism especially is provided for detecting at least one parameter, determines to impact the feedback quantity of characteristic quantity according to described at least one parameter.
Propose in addition: this measurement mechanism has at least one acceleration transducer, and described acceleration transducer is provided for detecting at least one acceleration parameter of hand held power machine." acceleration parameter " should especially be interpreted as the accelerating curve that records along at least one axis.This axis preferred parallel is in main operative orientation.Acceleration parameter especially forms the special precise parameters about the vibration of hand held power machine.Can realize vibrating especially little, controlled hand held power machine by means of acceleration transducer.
Propose in another kind of design: measurement mechanism has at least one pressure sensor, the pressure parameter when this pressure sensor is provided for having at least in the compression chamber of detection percussion mechanism." pressure parameter " should especially be interpreted as the relative pressure curve that records in compression chamber.Pressure parameter is particularly useful for accurately obtaining especially the effect by the energy of workpiece reflection.In this article, " when having at least " especially is interpreted as: can realize discrete pressure detecting in compression chamber.Preferably, in compression chamber, occur workpiece reflection energy do the time spent at least one time period, carry out the detection of at least one pressure parameter.Can realize special hand held power machine of working efficiently by means of pressure sensor.
Propose in addition: adjusting device has at least two adjusting patterns, and these adjusting patterns are provided for providing respectively at least one operating point." adjusting pattern " should especially be interpreted as the specific method of operation, and the described method of operation is adjusted at least one specific purpose that act as with optimization.This operating point is especially determined by the calculation routine based on the pattern of adjusting.Therefore can realize at the not adjusting of same-action optimization.
Propose in addition: adjusting device is provided for being adjusted to the operating point of optimizing at vibration in one of described adjusting pattern." at vibration optimization " should especially be interpreted as and be in operation at the very little hand held power machine of objective and/or subjective vibration.At this, especially can optimally be adjusted to the very little vibration of energy and/or allow the operator is less to feel uncomfortable vibration.Therefore can allow the operator especially cosily work.
Propose in addition: adjusting device is provided for being adjusted to one at impacting the operating point of optimizing in one of described adjusting pattern." at impact optimizing " should be interpreted as especially that hand held power machine is in operation and realize the operating efficiency of maximum possible.Can realize especially effectively working by means of impacting the operating point of optimizing.
Propose a kind of selection element in addition, this selection element makes the operator cosily to switch between different adjusting patterns to the selection possibility that the operator provides the adjusting pattern.
In addition, the invention still further relates to a kind of hand held power machine that has hand-held machine tool device, wherein, can consider that all those skilled in the art think significant, have the hand held power machine of percussion mechanism, that for example especially can expect is impact drill, hammer drill, percussion drill driver, rotary-percussion driver, impact type driver, jump bit, stamping hammer and/or is used for multifunctional cutter by hand-held machine tool device operation, can provide thus special efficiently and/or hand held power machine that can comfortable use.
Description of drawings
Other advantage is drawn by following description of drawings.Embodiments of the invention shown in the drawings.The big measure feature that comprises combining form in accompanying drawing, specification and the claim.Those skilled in the art can consider these features worthily separately or these features are combined into significant other combinations.
In the accompanying drawing:
Fig. 1 illustrates the hand held power machine that has hand-held machine tool device, pressure sensor and acceleration transducer; And
Fig. 2 illustrates a kind of alternative layout of pressure sensor.
The specific embodiment
Fig. 1 and Fig. 2 have illustrated with schematic diagram respectively and have had by hand-held machine tool device 10a of the present invention the hand held power machine 24a of 10b, a kind of embodiment of 24b.At this, hand held power machine 24a, the housing 32a of 24b, 32b is illustrated with cutting open like this, makes at hand held power machine 24a, the hand-held machine tool device 10a of 24b inside, 10b is as seen.
Fig. 1 shows the hand-held machine tool device 10a that has percussion mechanism 12a.This percussion mechanism 12a has motor 34a, toggle 36a, conversion element 38a, driven plunger 40a, hammer pipe 42a, compression chamber 28a, impactor 44a and striker 46a.Motor 34a can not be connected with toggle 36a with reversing.Toggle 36a is converted into the vibratory linear motion 52a of driven plunger 40a on the main operative orientation 54a of hand held power machine 24a by means of conversion element 38a with the rotatablely moving of axle 50a of motor 34a.Driven plunger 40a is led by hammer pipe 42a.For this reason, hammer pipe 42a surrounds driven plunger 40a circularly.Driven plunger 40a is by means of the pressure of gas, and the pressure by means of the air among the compression chamber 28a drives impactor 44a more precisely.40a looks from driven plunger, and impactor 44a is arranged among the hammer pipe 42a along main operative orientation 54a, and led by hammer pipe 42a.Under the driving of pressure, impactor 44a can move between driven plunger 40a and striker 46a.If impactor 44a meets striker 46a, then impactor 44a is delivered to an impact on the striker 46a.Striker 46a and cutter 56a coupling, this cutter is removably disposed on the cutter holder 48a.In this embodiment, cutter 56a is designed to augers.This cutter also can be that those skilled in the art think significant other cutter 56a.In addition, in this embodiment, motor 34a makes cutter 56a rotate around rotation 60a by means of axle 58a.Rotation 60a is parallel to main operative orientation 54a.In particular for the beater mechanism of jump bit, those skilled in the art think that significant other configuration also is fine.
In addition, percussion mechanism 12a has adjusting device 14a, and this adjusting device is provided for regulating two and impacts characteristic quantity.Except two sensor 22a, 26a and one select outside the element 30a, and adjusting device 14a is arranged on the circuit board 64a among the handle 66a of the main handle of formation of L-shape housing 32a with a power electronic parts 62a who powers for motor 34a.Adjusting device 14a has computing unit 16a, and this computing unit is configured to microcontroller.This computing unit 16a is in operation and carries out three routines.The first calculation routine 68a is provided for determining according to parameter the feedback quantity of impact characteristic quantity.In this embodiment, the accelerating curve of pressure curve among the compression chamber 28a and housing 32a uses as parameter.The second calculation routine 70a determines an operating point, and use as the command quantity of regulating this operating point.Regulating routine 18a is provided for regulating the impact characteristic quantity that should regulate about described operating point.For this reason, regulate routine 18a and have (for example being used for the PID-adjuster) computational methods and the compensation method that does not describe in detail.
In addition, Fig. 1 shows, and adjusting device 14a has measurement mechanism 20a, and this measurement mechanism is provided for detecting two parameters.On the one hand, measurement mechanism 20a has acceleration transducer 22a for the acceleration parameter that detects hand held power machine 24a.This acceleration transducer 22a is arranged on the circuit board 64a that is coupled with housing 32a.Acceleration parameter comprises about the information of housing 32a vibration with about the information of energy, and the workpiece that is not shown specifically reflects this energy.Measuring vibrations is come in position according near the acceleration transducer 22a the operator who does not illustrate.
For the pressure parameter among the compression chamber 28a that detects percussion mechanism 12a, measurement mechanism 20a has pressure sensor 26a.The distolateral 72a that this pressure sensor 26a is arranged on the main operative orientation 54a of sensing of driven plunger 40a upward and by means of information carrier (being electric conductor 74a in this case) is connected with circuit board 64a.Pressure sensor 26a can detect the pressure curve among the compression chamber 28a enduringly in this position.Pressure parameter comprises information relevant with the energy of workpiece reflection and the information of vibrating about housing 32a.
In addition, adjusting device 14a has two adjusting patterns.Decide on the adjusting pattern, different operating points is used for reconciling.Different operating points is at different effect optimization.One of these adjusting patterns are provided for being adjusted to the operating point of optimizing at vibration.Another kind of mode of operation is provided for being adjusted to the operating point of optimizing at impacting.In order to make the operator can select different adjusting patterns, hand-held machine tool device 10a has the element of selection 30a, and this selection element provides the selection possibility of adjusting pattern for the operator.This selection element 30a is configured to switch and is arranged on the bottom side 76a of housing 32a.
Figure 2 illustrates another kind of embodiment of the present invention.Different with previous embodiment is: the alphabetical a among Fig. 1 in the Reference numeral of embodiment is replaced by alphabetical b in the Reference numeral of embodiment shown in Figure 2.The following description be limited to basically with Fig. 1 in the difference of embodiment, wherein, with regard to the parts, feature and the function that remain unchanged, can be referring to the explanation of the embodiment among Fig. 1.
Fig. 2 shows a kind of hand-held machine tool device 10b, differently with first kind of embodiment in this hand-held machine tool device is: pressure sensor 26b is arranged on the side 78b of hammer pipe 42b.Pressure sensor 26b is communicated with the compression chamber 28b of hammer pipe 42b by means of pressure channel 82b; wherein; pressure channel 82b is arranged in the guiding area of hammer pipe 42b; the impactor 44b of percussion mechanism 12b leads in this guiding area; thereby impactor 44b seals this pressure channel 82b at least one operating point, and therefore protects pressure sensor 26b.At this, pressure channel 82b is such to be provided with away from driven plunger 40b far awayly, makes to protect pressure sensor 26b to avoid the maximum influence of pressure curve by impactor 44b during the maximum of pressure curve.When the maximum of pressure curve appears at spacing 80b minimum between impactor 44b and the driven plunger 40b.At this time point, the hole 82b that passes to pressure sensor 26b among the impactor 44b sealing hammer pipe 42b.As substituting of impactor 44b, driven plunger 40b also can confining pressure passage 82b.
Claims (11)
1. hand-held machine tool device, (12a 12b), is characterized in that, (12a, (14a, 14b), this adjusting device is provided for regulating at least one and impacts characteristic quantity described percussion mechanism 12b) to have adjusting device to have at least one percussion mechanism.
2. hand-held machine tool device as claimed in claim 1, it is characterized in that (14a 14b) has computing unit (16a to described adjusting device, 16b), this computing unit is provided for determining according at least one parameter at least one feedback quantity of described impact characteristic quantity at least.
3. hand-held machine tool device as claimed in claim 1 or 2 at least is characterized in that, (14a, (18a, 18b), this adjusting routine is provided for regulating described at least impact characteristic quantity about at least one operating point described adjusting device 14b) to have the adjusting routine.
4. as the described hand-held machine tool device of one of prostatitis claim, it is characterized in that, described adjusting device (14a, 14b) have at least one measurement mechanism (20a, 20b).
5. hand-held machine tool device as claimed in claim 4 is characterized in that, described measurement mechanism (20a, 20b) has at least one acceleration transducer (22a, 22b), described acceleration transducer is provided for detecting hand held power machine (24a, at least one acceleration parameter 24b).
6. hand-held machine tool device as claimed in claim 4 at least, it is characterized in that, described measurement mechanism (20a, 20b) has at least one pressure sensor (26a, 26b), described pressure sensor detects described percussion mechanism (12a, compression chamber 12b) (28a, 28b) pressure parameter in when being provided for having at least.
7. as the described hand-held machine tool device of one of prostatitis claim, it is characterized in that (14a 14b) has at least two kinds of adjusting patterns to described adjusting device, and described adjusting pattern is provided for providing respectively at least one operating point.
8. hand-held machine tool device as claimed in claim 7 is characterized in that, (14a 14b) is provided for being adjusted to the operating point of optimizing at vibration to described adjusting device in one of described adjusting pattern.
9. hand-held machine tool device as claimed in claim 7 at least is characterized in that, (14a 14b) is provided for being adjusted to the operating point of optimizing at impacting to described adjusting device in one of described adjusting pattern.
10. hand-held machine tool device as claimed in claim 7 at least is characterized in that, (30a, 30b), described selection element provides the selection possibility of adjusting pattern for the operator to be provided with the selection element.
11. one kind has as the described hand-held machine tool device of one of claim 1 to 10 (10a, hand held power machine 10b).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008044044.2 | 2008-11-25 | ||
| DE102008044044A DE102008044044A1 (en) | 2008-11-25 | 2008-11-25 | Hand machine tool device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101733735A true CN101733735A (en) | 2010-06-16 |
| CN101733735B CN101733735B (en) | 2014-12-03 |
Family
ID=41278131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910225001.5A Active CN101733735B (en) | 2008-11-25 | 2009-11-24 | Hand-held machine tool device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2189249B1 (en) |
| CN (1) | CN101733735B (en) |
| DE (1) | DE102008044044A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573183A (en) * | 2012-08-06 | 2014-02-12 | 周飞 | Modified pneumatic percussion drill |
| CN105983951A (en) * | 2015-03-23 | 2016-10-05 | 罗伯特·博世有限公司 | Power tool, in particular portable power tool, having a motorized drive unit and having at least one sensor device |
| CN106457546A (en) * | 2014-04-17 | 2017-02-22 | 罗伯特·博世有限公司 | Method for operating a hand-held power tool, hand-held power tool |
| CN107000183A (en) * | 2014-12-03 | 2017-08-01 | 喜利得股份公司 | Control method for Hand-held tool equipment |
| CN108543979A (en) * | 2018-04-20 | 2018-09-18 | 郑牡兰 | A kind of advanced mold design and manufacturing technology equipment |
| CN108547471A (en) * | 2018-04-20 | 2018-09-18 | 王云龙 | A kind of safety fire fighting component |
| CN108637322A (en) * | 2018-04-20 | 2018-10-12 | 李晓梅 | A kind of numerically controlled processing equipment |
| CN110774236A (en) * | 2019-11-20 | 2020-02-11 | 三门宣教机械设备有限公司 | Pneumatic impact tool with adjustable pressure |
| US11105358B2 (en) | 2016-08-30 | 2021-08-31 | Hilti Aktiengesellschaft | Distance sensor at anchor tip |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012206451B4 (en) * | 2012-04-19 | 2020-12-10 | Hilti Aktiengesellschaft | Hand machine tool |
| US20150202758A1 (en) * | 2012-05-25 | 2015-07-23 | Rainer Nitsche | Percussion Unit |
| DE102012208870A1 (en) * | 2012-05-25 | 2013-11-28 | Robert Bosch Gmbh | Percussion unit |
| DE102013208902B4 (en) | 2013-05-14 | 2023-12-14 | Robert Bosch Gmbh | Hand tool device |
| DE102013212635A1 (en) * | 2013-06-28 | 2014-12-31 | Robert Bosch Gmbh | Hand machine tool device |
| DE102014212253A1 (en) * | 2014-06-26 | 2015-12-31 | Robert Bosch Gmbh | Percussion device |
| EP3028820A1 (en) * | 2014-12-03 | 2016-06-08 | HILTI Aktiengesellschaft | Hand-held machine tool and control method therefor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2832169A1 (en) * | 1978-07-21 | 1980-01-31 | Hilti Ag | MOTORIZED DRILLING HAMMER |
| US6508315B1 (en) * | 2001-06-07 | 2003-01-21 | Steven James Lindsay | Small impact power tool |
| US6691798B1 (en) * | 2002-06-19 | 2004-02-17 | Steven James Lindsay | Variable hand pressure activated power tool |
| DE10309012B3 (en) * | 2003-03-01 | 2004-08-12 | Hilti Ag | Control method for hand-held electric hammer drill using microcontroller for repetitive opening and closing of clutch between electric motor and tool chuck |
| DE10316844A1 (en) * | 2003-04-11 | 2004-11-04 | Hilti Ag | Control of an electric hand machine tool |
| GB2411375B (en) * | 2004-02-26 | 2008-04-09 | South West Highways Ltd | Vibration reduction system |
| DE102007000488A1 (en) * | 2007-09-12 | 2009-03-19 | Hilti Aktiengesellschaft | Hand tool with air spring impact mechanism, linear motor and control method |
| GB0804967D0 (en) * | 2008-03-18 | 2008-04-16 | Black & Decker Inc | Powered hammer with a vibration dampening mechanism |
-
2008
- 2008-11-25 DE DE102008044044A patent/DE102008044044A1/en not_active Withdrawn
-
2009
- 2009-09-25 EP EP09171301.6A patent/EP2189249B1/en active Active
- 2009-11-24 CN CN200910225001.5A patent/CN101733735B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573183A (en) * | 2012-08-06 | 2014-02-12 | 周飞 | Modified pneumatic percussion drill |
| CN106457546A (en) * | 2014-04-17 | 2017-02-22 | 罗伯特·博世有限公司 | Method for operating a hand-held power tool, hand-held power tool |
| CN106457546B (en) * | 2014-04-17 | 2021-03-12 | 罗伯特·博世有限公司 | Method for operating a hand-held power tool, hand-held power tool |
| US10493611B2 (en) | 2014-12-03 | 2019-12-03 | Hilti Aktiengesellschaft | Control method for a hand-held power tool |
| CN107000183A (en) * | 2014-12-03 | 2017-08-01 | 喜利得股份公司 | Control method for Hand-held tool equipment |
| CN107000183B (en) * | 2014-12-03 | 2019-08-27 | 喜利得股份公司 | Control method for Hand-held tool equipment |
| CN105983951A (en) * | 2015-03-23 | 2016-10-05 | 罗伯特·博世有限公司 | Power tool, in particular portable power tool, having a motorized drive unit and having at least one sensor device |
| US11105358B2 (en) | 2016-08-30 | 2021-08-31 | Hilti Aktiengesellschaft | Distance sensor at anchor tip |
| CN108637322A (en) * | 2018-04-20 | 2018-10-12 | 李晓梅 | A kind of numerically controlled processing equipment |
| CN108547471A (en) * | 2018-04-20 | 2018-09-18 | 王云龙 | A kind of safety fire fighting component |
| CN108543979A (en) * | 2018-04-20 | 2018-09-18 | 郑牡兰 | A kind of advanced mold design and manufacturing technology equipment |
| CN110774236A (en) * | 2019-11-20 | 2020-02-11 | 三门宣教机械设备有限公司 | Pneumatic impact tool with adjustable pressure |
| CN110774236B (en) * | 2019-11-20 | 2021-07-27 | 山东奥德燃气设备制造有限公司 | Pneumatic impact tool with adjustable pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101733735B (en) | 2014-12-03 |
| EP2189249A1 (en) | 2010-05-26 |
| DE102008044044A1 (en) | 2010-05-27 |
| EP2189249B1 (en) | 2018-01-17 |
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