WO2010016185A1 - ねじ締付装置およびトルクセンサー - Google Patents
ねじ締付装置およびトルクセンサー Download PDFInfo
- Publication number
- WO2010016185A1 WO2010016185A1 PCT/JP2009/003046 JP2009003046W WO2010016185A1 WO 2010016185 A1 WO2010016185 A1 WO 2010016185A1 JP 2009003046 W JP2009003046 W JP 2009003046W WO 2010016185 A1 WO2010016185 A1 WO 2010016185A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- torque sensor
- clutch
- retainer
- torque
- Prior art date
Links
Images
Classifications
-
- 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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- 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
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- 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
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/141—Mechanical overload release couplings
Definitions
- the present invention relates to a screw tightening device using a motor as a driving source and a torque sensor capable of accurately and easily measuring a driving-side tightening force.
- Conventional screw tightening devices include an angle type and a pistol type.
- a reduction gear is connected to the output side of the motor drive, a clutch is connected to the output side of the reduction gear, and a tool is connected to the output side of the clutch.
- the thing which provided the socket is known (for example, refer patent document 1). After tightening the screws, a torque wrench is used to reach the required tightening torque.
- a strain gauge is interposed between the screw and the object to be tightened on a bridge, etc., but this is not realistic on the production line of a vehicle body. For this reason, a torque sensor is built in the nut runner or electric driver, the tightening torque value is monitored in real time, and the brake is applied and stopped when the target tightening force is reached.
- the structure of the torque sensor includes a magnetostriction method and an encoder method that detect changes in magnetic properties induced by strain.
- the magnetostrictive system is provided with strain gauges (usually four) attached to the outer periphery of a drive shaft or a member that rotates integrally with the drive shaft, and a detection circuit (e.g. Easton bridge circuit) is formed, and the resistance value of the strain gauge changes due to the torsional torque generated on the drive shaft, and the torque value is detected by taking out this change as a voltage value.
- strain gauges usually four
- a detection circuit e.g. Easton bridge circuit
- the encoder method is a method of detecting the angle of twist from the phase difference between the outputs of a pair of rotary encoders provided at both ends of the torsion bar, as disclosed in Patent Document 3.
- the type in which a strain gauge is attached to the rotating shaft disclosed in Patent Document 2 has a structure in which the rotating ring and the brush are in contact with each other, which affects the measurement accuracy due to noise, problems with durability due to brush wear, and rotation. Due to the structure in which a strain gauge is attached to the shaft, non-contact coils (four pieces) must be used for voltage input / output, resulting in an increase in weight.
- Patent Document 3 detects the torsion angle of the torsion bar, so that usually a part of the shaft is narrowed to increase the distortion. For this reason, the stress limit is easily exceeded and the reliability is poor.
- the present invention has been made in view of such problems of the prior art, and the object of the present invention is to reduce the size of the clutch as well as to reduce the weight and weight of the entire device and to improve the operability. It intends to provide a screw tightening device and a torque sensor.
- a first invention according to claim 1 is a screw tightening device using a motor as a drive source, wherein a clutch is connected to the output side of the motor, and a reduction gear is connected to the output side of the clutch.
- a tool socket is provided on the output side of the reduction gear.
- electric power is intermittently supplied to the motor to intermittently rotate the motor.
- the fact that the tightening torque has reached a desired value depends on the driving time of the motor and / or the operating state of the displacement switch provided in the clutch. To decide.
- the displacement switch is operated by a switch lever that detects the movement of the retainer of the clutch and a spring damper that buffers the operation of the switch lever. Is.
- a torque sensor is arranged such that a cam mechanism that transmits a driving force from a motor to a rotating shaft, and the rotating shaft are not contacted with the rotating shaft and do not rotate.
- a gauge base that is compressible in the axial direction, a compression amount detection element attached to the gauge base, and a controller that is connected to the detection element and turns on and off the motor by a measurement voltage corresponding to the compression amount.
- the gauge base As a means for arranging the gauge base around the rotating shaft so as not to rotate without contacting the rotating shaft, for example, it is conceivable that the gauge base is floatingly supported outside the rotating shaft via a thrust bearing.
- the gauge base is a cylinder made of a metal such as aluminum or an elastic body such as resin.
- the amount of compression in the axial direction can be controlled by adjusting the thickness. That is, it is possible to prepare gauge bases having different thicknesses according to the target detected torque value and replace them as necessary.
- the cam mechanism may have a structure including a retainer plate that is connected to a drive shaft of a motor, a retainer that is connected to the rotating shaft, and a steel ball that connects the retainer plate and the retainer so as to be able to contact and separate. It is done.
- a strain gauge or a piezoelectric element is appropriate.
- a strain gauge it is attached outside the gauge base, and in the case of a piezoelectric element, it is arranged between two gauge bases divided in the axial direction.
- the clutch since the clutch is provided not on the output side of the speed reducer but on the input side of the speed reducer, the clutch can be reduced in size, so that the apparatus main body held by the operator can be reduced in size and weight. Can be planned. Further, the screw tightening operation is facilitated even in a narrow place due to the reduction in size and weight of the apparatus main body held by the operator.
- torque can be increased by intermittently supplying electric power to the motor to intermittently rotate the motor. Also. Since the motor is rotated intermittently, the reaction force is reduced and the burden on the operator can be reduced.
- the required tightening torque can be achieved.
- the required tightening torque can be achieved with higher accuracy.
- the compression amount detecting element such as a strain gauge is attached to the gauge base which is separated from the drive shaft and does not rotate, the voltage input / output coil necessary for the conventional torque sensor is not required, and Since the rotating ring and the brush can be omitted, the number of parts can be reduced and the weight can be reduced.
- FIG. 4 is an explanatory view of a retainer plate, (a) is a plan view of the retainer plate, (b) is a developed sectional view showing a relationship (clutch inactive state) of the retainer plate, the steel ball, and the retainer, (c) is the retainer plate and steel Cross-sectional development view showing the relationship between the ball and the retainer (clutch operating state)
- FIG. 4 is an explanatory view of a retainer plate
- (a) is a plan view of the retainer plate
- (b) is a developed sectional view showing a relationship (clutch inactive state) of the retainer plate, the steel ball, and the retainer
- FIG. 3B is a sectional view of the torque sensor according to the present invention, taken along line BB in FIG. (A) is a side view of the retainer plate, (b) is a view in the direction of arrow A in (a).
- Cross section of the torque sensor in the compressed state Sectional view of the torque sensor of another embodiment
- FIG. 1 is a schematic side view of a screw tightening device according to the first invention
- FIG. 2 is a schematic top view
- FIG. 3 is an explanatory diagram of a clutch
- FIG. 4 is an explanatory diagram of a retainer plate
- FIG. FIG. 1 is a schematic side view of a screw tightening device according to the first invention
- FIG. 2 is a schematic top view
- FIG. 3 is an explanatory diagram of a clutch
- FIG. 4 is an explanatory diagram of a retainer plate
- a screw tightening device includes a pistol-type device main body 1, a controller (not shown) that controls a direct current (DC) motor 3 constituting the device main body 1, and It consists of a lithium ion battery (not shown) as a power source and a cable 2 for connecting the apparatus main body 1 and the controller.
- the controller and the battery can be attached to a belt wound around the operator's waist or can be incorporated into the apparatus main body 1.
- the apparatus main body 1 includes a DC motor 3 as a driving source, a mechanical clutch 5 that transmits the torque of the DC motor 3 to the speed reducer 4, and a planetary gear that reduces the rotational speed of the clutch 5.
- the DC motor 3 may be brushless or with a brush.
- the clutch 5 is provided with a displacement switch 8 for detecting the operation state of the clutch 5.
- the DC motor 3 is intermittently supplied with pulsed power (current) by the controller, and intermittent control is performed to rotate intermittently.
- intermittent control By such intermittent control, an impact effect can be produced and torque can be increased by utilizing the backlash of the gear part and joint part of the speed reducer 4.
- the cycle of intermittent time (on / off time) is shortened (for example, 0.1 msec) and the rotation and stop are repeated before the tightening reaction force is transmitted to the operator's arm, the reaction force can be reduced. I can plan.
- the clutch 5 includes a clutch rod 11 to which the output shaft of the DC motor 3 is connected, a substantially disc-shaped retainer plate 12, three spherical steel balls 13, a substantially disc-shaped retainer 14, and a coil shape.
- a cam (inclined portion 18a, flat portion 18b, and inclined portion 18c) 18 is equally divided into three in the circumferential direction in the vicinity of the edge portion. .
- the inclination angle ⁇ of the inclined portions 18a and 18c is preferably 10 ° to 30 °.
- a recess 14a for accommodating the steel ball 13 in a state in which approximately half of the steel ball 13 protrudes is formed at a portion facing the cam 18 formed on the retainer plate 12.
- the steel ball 13 is sandwiched between a cam 18 formed on the retainer plate 12 and a groove 14 a formed on the retainer 14.
- the steel ball 13 is positioned between the inclined portion 18 a and the inclined portion 18 c before the tightening torque exceeds the elastic force of the spring 15.
- the force is exceeded, as shown in FIG. 4 (c)
- it rides on the flat portion 18b of the cam 18.
- the steel ball 13 is repeatedly passed over the flat portion 18b of the cam 18, thereby blocking the rotation of the retainer plate 12 by the DC motor 3 from being transmitted to the speed reducer 4. Then, the rotation of the tool socket 6 stops.
- the displacement switch 8 is an on / off switch that detects the movement of the retainer 14 that varies depending on the position of the steel ball 13, as shown in FIG.
- the displacement switch 8 is attached to a base member 21 fixed to the frame body 20 of the clutch 5.
- the movement of the retainer 14 is a switch in which one end 22a is clamped by the edge portion 14b of the retainer 14, the center portion 22b is slidably inserted into the base member 21, and the other end 22c is in contact with the displacement switch 8. This is transmitted to the displacement switch 8 by a lever 22 and a spring damper 23 that is mounted between the other end 22 c of the switch lever 22 and the base member 21.
- Reference numeral 8a denotes a push button that protrudes when the displacement switch 8 is in the OFF state.
- the screw tightening device configured as described above will be described.
- the operator holds the holding part 7 of the apparatus main body 1 with one hand and attaches the screw to the tool socket 6.
- the tip of the screw mounted on the tool socket 6 is positioned in the screw hole to be tightened, and a switch (not shown) provided on the grip portion 7 is pushed with a finger.
- the DC motor 3 starts to be driven, and the torque and rotation speed generated by the DC motor 3 are transmitted to the screw mounted on the tool socket 6 via the clutch 5 and the speed reducer 4.
- FIG. 6 is a diagram showing an example of the computer setting screen of the intermittent control controller.
- S1 represents the rotation speed
- A1 to A3 represent current (torque)
- T1 to T11 represent waveform time.
- a window for setting the rotational speed S1 currents (torques) A1 to A3 and waveform times T1 to T11 is provided in the lower part of the screen, and buttons are provided on the right side of each window. By clicking this button, the setting conditions can be increased or decreased.
- a graph in the upper half of the screen shows the above setting conditions over time.
- the motor control command is stored in the input controller from the computer, and the motor is rotated while being controlled.
- the apparatus main body 1 becomes smaller and lighter than the conventional one.
- the size and weight of the apparatus main body 1 when a tightening torque of 30 N ⁇ m is required are as follows.
- the length (L) ⁇ width (W) ⁇ height (H) shown in FIG. 1 and FIG. 2 is changed from the conventional 500 mm ⁇ 70 mm ⁇ 104 mm to 260 mm ⁇ 50 mm ⁇ 150 mm. About 50% decrease from the size.
- the weight of the apparatus main body 1 has been reduced from 2.4 kg to 1.5 kg, which is approximately 40% less than the conventional weight.
- the size of the clutch 5 is such that the diameter D shown in FIG. 3A is 33 mm from the conventional 116 mm, which is approximately 80% less than the conventional size, and the weight of the clutch 5 is also changed from 1200 g to 200 g. About 70% less than the conventional weight.
- the fact that the tightening torque has reached a desired value is determined by the operation state (change from the on state to the off state) of the displacement switch 8 provided in the clutch 5, but the DC motor 3
- the driving time and the operation state of the displacement switch 8 can be used as the determination conditions. It can also be determined only by the driving time of the DC motor 3.
- FIG. 7 is a view showing a tightening tool to which the torque sensor according to the present invention is applied.
- FIG. 8 is a cross-sectional view of the torque sensor according to the present invention, taken along line BB in FIG. (A) is a side view of a retainer plate, (b) is a view in the direction of arrow A in (a), and
- FIG. 10 is a sectional view of a torque sensor in a compressed state.
- a motor 22, a torque sensor 30 according to the present invention, and a speed reducer 23 are provided in the case 21 of the tightening tool.
- a head portion 24 is detachably attached to the speed reducer 23, and the head portion 24 is fitted to a bolt 25.
- the fastening object 26 is tightened.
- an operation lever 27 is provided in the grip portion of the case 21, and a battery 28 is connected to an end portion of the grip portion.
- the torque sensor 30 includes a rotation shaft 31, and a cam mechanism 32 that transmits a driving force from the motor 22 to the rotation shaft 31 via a bearing is disposed in a groove portion 31 a formed on the outer surface of the rotation shaft 31.
- the cam mechanism 32 includes a retainer plate 33 that is coupled to the drive shaft of the motor 22, a retainer 34 that is coupled to the rotary shaft 31, and a steel ball 35 that is detachably coupled between the retainer plate 33 and the retainer 34. Consists of
- a through hole 22a through which the bolt 29 is inserted is formed in the flange portion of the motor 22, and a bolt mounting hole 33a into which the bolt 29 is screwed is formed in the retainer plate 33, and the motor 22 and the retainer plate 33 are formed by the bolt 29. And are combined.
- a cam groove 36 is formed on the lower surface of the retainer plate 33, and a steel ball 35 held by the retainer 34 is engaged with the cam groove 36. In this state, the driving force of the motor 22 rotates. It is transmitted to the shaft 31.
- the gauge base 37 is disposed in the middle of the rotary shaft 31 so as not to rotate in contact with the rotary shaft.
- the gauge base 37 has a cylindrical shape with flange portions at the upper and lower ends, and is made of aluminum, resin (synthetic rubber), or the like.
- gauge base 37 is not limited to those shown in the drawings, and any material may be used as long as the axial dimension changes when a force is applied in the axial direction.
- the flanges at the upper and lower ends of the gauge base 37 are supported between the retainer 34 and the holder plate 40 inserted into the lower part of the rotary shaft 31 via thrust bearings 38 and 39, respectively. As a result, the gauge base 37 is floatingly supported outside the rotating shaft 31.
- the holder plate 40 is secured by an adjustment nut 41.
- the adjustment nut 41 and the holder plate 40 are removed.
- a hole in which the rod of the speed reducer 23 is splined is formed in the axial direction at the end of the rotating shaft 31 to which the adjusting nut 41 is screwed.
- a strain gauge 42 as a detection element is attached to the outer periphery of the gauge base 37.
- the number of strain gauges 42 is arbitrary, but usually 3 to 4 are attached.
- a control unit 43 is connected to the strain gauge 42.
- the control unit 43 converts the measured value of the strain gauge 42 into torque, determines that the predetermined torque value has been reached, and turns off the motor 22.
- FIG. 11 is a cross-sectional view of a torque sensor of another embodiment.
- the gauge base 37 is divided into upper and lower halves 37a and 37b, and a detection element is provided between these halves 37a and 37b.
- the piezoelectric element 44 is sandwiched.
- the material of the gauge base 17 itself may not be elastic.
- the clutch since the clutch is provided not on the output side of the speed reduction mechanism but on the input side of the speed reduction mechanism, the clutch can be reduced in size, so that the size and weight can be reduced, the operability is improved, and even in a narrow place. It is possible to provide a screw fastening device that facilitates screw fastening work.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
Claims (10)
- モータを駆動源とするねじ締付装置であって、モータの出力側にクラッチを接続し、このクラッチの出力側に減速機を接続し、この減速機の出力側にツールソケットを設けたことを特徴とするねじ締付装置。
- 前記モータに電力を間欠的に供給し、前記モータを断続的に回転させる請求項1記載のねじ締付装置。
- 締付トルクが所望値に達したことをモータの駆動時間及び/又は前記クラッチに設けた変位スイッチの動作状態により決定する請求項1又は2記載のねじ締付装置。
- 前記変位スイッチは、前記クラッチのリテーナの動きを検知するスイッチレバーと、このスイッチレバーの動作を緩衝するスプリングダンパにより作動する請求項3記載のねじ締付装置。
- 回転軸に加えられるトルクを測定するトルクセンサーにおいて、このトルクセンサーは前記回転軸にモータからの駆動力を伝達するカム機構と、前記回転軸の周囲に回転軸とは非接触で回転しないように配置され且つ軸方向に圧縮可能なゲージベースと、このゲージベースに取り付けられる圧縮量検出素子と、この検出素子と接続され圧縮量に応じた測定電圧によって前記モータを制御する制御部とを備えることを特徴とするトルクセンサー。
- 請求項5に記載のトルクセンサーにおいて、前記ゲージベースはスラストベアリングを介して回転軸の外側にフローティング支持されていることを特徴とするトルクセンサー。
- 請求項5に記載のトルクセンサーにおいて、前記ゲージベースはアルミニウムなどの金属または弾性体からなる筒体としたことを特徴とするトルクセンサー。
- 請求項5に記載のトルクセンサーにおいて、前記カム機構はモータの駆動軸と連結するリテーナプレートと、前記回転軸と連結するリテーナと、前記リテーナプレートとリテーナとの間を接離可能に連結するスチールボールとから構成されることを特徴とするトルクセンサー。
- 請求項5に記載のトルクセンサーにおいて、前記検出素子は前記ゲージベースの外側に取り付けられる歪ゲージであることを特徴とするトルクセンサー。
- 請求項5に記載のトルクセンサーにおいて、前記検出素子は軸方向に2分割されたゲージベースの間に設けられる圧電素子であることを特徴とするトルクセンサー。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801365664A CN102159363A (zh) | 2008-08-08 | 2009-07-01 | 螺钉紧固装置及转矩传感器 |
US13/058,101 US20110132630A1 (en) | 2008-08-08 | 2009-07-01 | Screw fastening device and torque sensor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008204963A JP4493708B2 (ja) | 2008-03-25 | 2008-08-08 | トルクセンサー |
JP2008-204963 | 2008-08-08 | ||
JP2008-204946 | 2008-08-08 | ||
JP2008204946A JP4454674B2 (ja) | 2007-08-09 | 2008-08-08 | ねじ締付装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010016185A1 true WO2010016185A1 (ja) | 2010-02-11 |
Family
ID=41664457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/003046 WO2010016185A1 (ja) | 2008-08-08 | 2009-07-01 | ねじ締付装置およびトルクセンサー |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN102159363A (ja) |
WO (1) | WO2010016185A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102636304A (zh) * | 2012-04-26 | 2012-08-15 | 哈尔滨电机厂有限责任公司 | 标准化高精度的模型导水瓣轴扭矩测量结构 |
CN103009325A (zh) * | 2012-11-22 | 2013-04-03 | 浙江明磊工具实业有限公司 | 一种电动螺丝刀 |
TWI493165B (zh) * | 2013-05-23 | 2015-07-21 | Locking axial force testing device | |
JP6412041B2 (ja) * | 2016-03-24 | 2018-10-24 | トヨタ自動車株式会社 | ねじ締付方法及びねじ締付装置 |
TWI767588B (zh) * | 2021-02-26 | 2022-06-11 | 碩豐工業股份有限公司 | 離合型動力傳輸裝置及其扭力檢測模組 |
JP7217304B2 (ja) * | 2021-03-04 | 2023-02-02 | 本田技研工業株式会社 | 締付工具制御システム |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS642129U (ja) * | 1987-06-22 | 1989-01-09 | ||
JPH0487782A (ja) * | 1990-07-27 | 1992-03-19 | Hitachi Koki Co Ltd | クラッチ式締付工具 |
JPH0526267U (ja) * | 1991-09-18 | 1993-04-06 | 三菱自動車工業株式会社 | トルクプリセツト型締結工具 |
JPH05223665A (ja) * | 1992-02-18 | 1993-08-31 | Fujitsu Ltd | モータのトルク検出部 |
JPH07237146A (ja) * | 1994-02-28 | 1995-09-12 | Zuien Ra | 電動工具の過負荷動力開放装置 |
-
2009
- 2009-07-01 WO PCT/JP2009/003046 patent/WO2010016185A1/ja active Application Filing
- 2009-07-01 CN CN2009801365664A patent/CN102159363A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS642129U (ja) * | 1987-06-22 | 1989-01-09 | ||
JPH0487782A (ja) * | 1990-07-27 | 1992-03-19 | Hitachi Koki Co Ltd | クラッチ式締付工具 |
JPH0526267U (ja) * | 1991-09-18 | 1993-04-06 | 三菱自動車工業株式会社 | トルクプリセツト型締結工具 |
JPH05223665A (ja) * | 1992-02-18 | 1993-08-31 | Fujitsu Ltd | モータのトルク検出部 |
JPH07237146A (ja) * | 1994-02-28 | 1995-09-12 | Zuien Ra | 電動工具の過負荷動力開放装置 |
Also Published As
Publication number | Publication date |
---|---|
CN102159363A (zh) | 2011-08-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20110132630A1 (en) | Screw fastening device and torque sensor | |
WO2010016185A1 (ja) | ねじ締付装置およびトルクセンサー | |
EP2607020B1 (en) | Rotary impact tool | |
EP2607028B1 (en) | Power tool | |
JPS6234782A (ja) | ねじ締付け可能な結合物を締付けまたは緩めるための方法および装置 | |
US11618138B2 (en) | Release mechanism for a torque tool | |
JP6135925B2 (ja) | インパクト回転工具及びインパクト回転工具用先端アタッチメント | |
JP6617959B2 (ja) | 定トルク電動ドライバーのねじ締めトルク検出方法および装置 | |
US8418569B2 (en) | Variable torque-rate test joint | |
JP2019519388A (ja) | 反力が制御された電気パルス工具 | |
JP5390226B2 (ja) | ねじ締め装置 | |
JP6528232B2 (ja) | 電動回転工具のねじ締め状態検出装置及びそのトルク調整方法並びにその使用によるねじ締め制御方法 | |
US20220176526A1 (en) | Torque screwdriver arrangement and method for operating such a torque screwdriver arrangement | |
JP4454674B2 (ja) | ねじ締付装置 | |
JP2012125887A (ja) | トルク検定装置 | |
JP2022524541A (ja) | ボルト引張工具 | |
JP2003166887A (ja) | トルク検出装置 | |
JP4493708B2 (ja) | トルクセンサー | |
JP2009085847A5 (ja) | ||
JP4138913B2 (ja) | 電動回転工具およびねじ具の締付けトルク管理システム | |
JP2004276158A (ja) | チャックの駆動装置及び駆動方法 | |
US20090173194A1 (en) | Impact wrench structure | |
JP3774806B2 (ja) | 電動チャック装置 | |
JP2000193562A (ja) | 負荷装置 | |
JP6418083B2 (ja) | 締付機 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980136566.4 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09804672 Country of ref document: EP Kind code of ref document: A1 |
|
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 13058101 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09804672 Country of ref document: EP Kind code of ref document: A1 |