5851results about "Screwdrivers" patented technology

A power tool includes a housing, a motor being controlled to run at a speed between 15,000 rpm and 32,000 rpm, an output spindle, a rotary impact assembly configured to transmit rotational motion with intermittent rotational impacts from a cam shaft to the output spindle, a hammer of the rotary impact assembly having an inertia between 400 kg·mm2 and 3,000 kg·mm2, and a single stage compound planetary transmission including a first planet gear meshed with a sun gear and a second planet gear meshed with a ring gear, the compound planet gear being carried by a planet carrier to achieve a gear reduction ratio between 14:1 and 30:1. The power tool is configured to achieve a fastening torque of at least 900 foot-pounds (a) in a time of less than 3.5 seconds, and / or (b) with an input energy of less than 2,500 Joules.

One or more settings of a power tool device can be automatically adjusted based on a location of the power tool device relative to a work object. Work object data that indicate a work object type for the work object can be determined, and work location data can be determined based on the work object data. The work location data indicate work locations on the work object where a power tool device action is to be performed. A position of the power tool device is also determined. An electronic controller can determine a power tool device setting corresponding to the power tool device action to be performed at the work location nearest to the power tool device position. The power tool device setting is transmitted to the power tool device by the electronic controller, where the power tool device setting indicates an operating parameter of the power tool device.

The invention provides a fixed axial force construction device for detecting bolt pre-tightening force in real time, and relates to the technical field of bolt detection and control. Temperature changes of all parts of a bolt can be monitored in real time through a temperature data acquisition module, and a historical temperature change data set is formed; secondly, a warning threshold value is set through a warning threshold value setting module according to the average temperature and historical data of all parts of the bolt, and the stability and reliability of the pretightening force of the bolt at different environment temperatures are ensured; and furthermore, through an index generation module, the environment temperature, the assignment evaluation coefficient and the thermal expansion coefficient are comprehensively considered, a pre-tightening force fine adjustment index is generated, compensation fine adjustment is performed on the bolt pre-tightening force after the torque is applied currently, and dynamic adjustment and accurate control of the pre-tightening force are realized.

A rotary impact tool includes a motor and an impact mechanism. The impact mechanism includes a cam shaft with a first cam groove rotatably driven by the motor, a cam ring received over the cam shaft with a second cam groove on its inner surface and a third cam groove on its outer surface, a hammer received over the cam ring with a fourth cam groove on its inner surface, an anvil with an output shaft and configured to be selectively engaged by the hammer, a spring configured to bias the hammer toward the anvil, a first ball received in the first and second cam grooves to couple the cam ring to the cam shaft, and a second ball received in the third and fourth cam grooves to couple the hammer to the cam ring.

A power tool includes a housing, a motor mounted within the housing and including a stator with an outer diameter and a rotor having a shaft configured to rotate about an axis relative to the stator. The power tool also includes a gear assembly operably coupled to the motor and including a ring gear fixed relative to the housing and planet gears meshed with the ring gear. A drive assembly is operably coupled to the gear assembly to receive torque from the shaft through the gear assembly. The power tool also includes a rear bearing rotatably supporting a rearward portion of the shaft and a forward bearing rotatably supporting a forward portion of the shaft. A distance measured between a front edge of the rear bearing and a rear edge of the forward bearing is less than the outer diameter of the stator.

The present disclosure is of an assembly between the drive head of a ratcheting wrench and a ratcheting wrench handle. A fastener is provided between the drive head and the handle. The drive head is pivotably connected to the handle by the fastener. The fastener is inserted through apertures of the drive head and the handle. The fastener is threaded at one end. An aperture of the handle is correspondingly threaded. The threads of the fastener and / or the handle do not extend the entire length of the aperture. The aperture with the thread may further have an unthreaded counterbore. The unthreaded counterbore mates with or abuts directly against an unthreaded portion of the fastener.

A power tool includes a motor, an output part, a housing, a control circuit board, and a panel. The motor includes a rotor rotatable about a motor rotation axis extending in a front-rear direction. The output part is disposed forward of the motor and is rotated by a rotational force of the rotor. The housing includes: a motor housing part that houses the motor; a grip part that extends downward from the motor housing part; and a battery holding part that is connected to a lower end of the grip part. The control circuit board is housed in the grip part and is configured to control the motor. The panel is disposed at a rear portion of the battery holding part and is manipulated to change a control method of the motor.

A mechanical percussion mechanism for a striking drive of an insertion tool of a handheld power tool includes a rotatably supported intermediate shaft, an impact body, and a rotatably supported output shaft. The intermediate shaft and the impact body each include at least one guide groove for guiding at least one guide body. A guide surface of the guide groove of the intermediate shaft and / or a guide surface of the guide groove of the impact body is configured as a kink-free and / or edge-free surface.

An insertion tool is provided. The tool includes a flexible section comprising a plurality of rigidizable links, an end effector actuator, and an end effector coupled to the flexible section. A flexible is shaft inserted through the flexible section, wherein torque is transferred from the end effector actuator to the distal end via the flexible shaft to cause a rotation of the end effector. A tool may include a tool-less disconnect interface between the end effector and the flexible shaft.

The invention discloses a tooth-shaped structure of a bolt fixing tool. The tooth-shaped structure comprises a drive part, a looping part is concavely arranged inside the drive part; the inner periphery of the looping part is a hollow structure and is approximately a polygonal structure, the intersectional angle between edges of the polygonal structure of the looping part are respectively provided with an escape groove, the escape groove is a recessed arc structure, an opening of the escape groove and an opening of the adjacent escape groove take on a straight edge, the straight edge is a lank line section; a top surface is respectively arranged at the center of the straight edges between two adjacent escape grooves, the top surface is in a planar straight line section structure, the top surface is arranged at the straight edge between the two adjacent escape grooves and is superposed on the straight edge; a first groove and a second groove are respectively recessed between the escape groove and the top surface, the first groove is closer to the escape groove, the second groove is closer to the top surface, the first and the second grooves are arranged in line symmetry with another first and second grooves; based on the intermediate vertical line of the distance between the two side walls of the escape groove with the arc structure, the first and the second grooves are arranged in line symmetry with another first and second grooves by the central vertical line of the distance between the two side walls of the arc structure of the escape grooves. The tooth-shaped structure of a bolt fixation tool can not cause slipping and bruting of the bolt fixing part resulting from the stress concentration of point contact.

A hand-held power tool is configured to receive an input indicative of a clutch setting for an electronic clutch from the tool operator, where the clutch setting is selectable from a drill mode, an automated drive mode and one or more user-defined drive modes. Each of the user-defined drive modes specifies a different value of torque at which to interrupt transmission of torque to the output spindle. In an automated drive mode, the controller interrupt torque to the output spindle in an automated manner when a fastener being driven reaches a desired stopping position. In a selected one of the user-defined drive modes, the controller sets a value of a maximum current threshold in accordance with the selected one of the user-defined drive modes and interrupts torque to the output spindle when current measures exceeding the maximum current threshold.

The present disclosure relates to a steel comprising 0.8 wt % to 0.87 wt % C; 1.5 wt % to 2.3 wt % Si; 0.5 wt % to 1.3 wt % Ni; a grain refining agent, selected from the group consisting of 0.08 wt % to 0.25 wt % V, 0.015 wt % to 0.04 wt % Nb, and a combination thereof; and the balance being Fe and inevitable impurities. The present disclosure further relates to a screwdriver bit made of the steel, and a method for processing the steel.

Fasteners, drivers, punches, fastener systems, and methods of making fasteners, drivers, punches, and fastener systems are disclosed herein. The fasteners, drivers, punches, and fastener systems include, in one example, stabilizing ribs and corresponding recesses.

An impact tool includes: an impact mechanism, where the impact mechanism includes an impact block driven by a drive shaft and a hammer anvil receiving an impact from the impact block, and the hammer anvil is connected to an output shaft; and a controller configured to control an electric motor. The controller is configured to, when the impact tool is in a low-speed mode and it is detected that the impact mechanism applies an impact force to the output shaft, perform the operations periodically: determining that the impact mechanism impacts a preset number of times and controlling the electric motor to shut down for a preset period and then restart.

An electric tool includes a body and a display device. The body has a main body portion and an operating portion. The body has a head portion and a rear portion that are located on a straight axis which is virtual. The operating portion has a connecting portion and a holding portion. Two ends of the connecting portion are respectively connected to the rear portion and the holding portion. The holding portion is located on the straight axis. A distance is provided between the holding portion and the rear portion. The rear portion has a mounting wall facing the holding portion. The display device is disposed on the rear portion and has a display portion exposed outside the mounting wall to show an operational status of the electric tool. Therefore, the holding portion could shield the display portion, reducing the likelihood of damage to the display portion due to collisions.

An impact tool includes a controller configured to control power being delivered to the and operable in one of: (a) a normal mode where the controller allows power to be delivered to the motor so that the impact mechanism transitions from operation in the rotary mode to operation in the impacting mode when an output torque exceeds a normal transition torque; and (b) a control mode where the controller controls power being delivered to the motor so that the impact mechanism transitions from operation in the rotary mode to operation in the impacting mode when an output torque exceeds a control transition torque that is greater than the normal transition torque.

A power tool includes a housing, a motor supported within the housing, the motor including a stator and a rotor, and a PCBA supported within the housing, the PCBA including a sensor configured to detect rotation of the rotor and an indicator assembly. The indicator assembly is configured to indicate an operational parameter of the power tool.

A light unit is less likely to have lower light emission performance upon receiving a shock. An electric work machine includes a motor, a housing including a motor compartment accommodating the motor and a grip protruding downward from the motor compartment, an output unit located frontward from the motor and operable with a rotational force from the motor, a substrate extending above, on a left, and on a right of the output unit, and a plurality of light emitters mounted on a front surface of the substrate at intervals in a circumferential direction of the output unit. A light emitter of the plurality of light emitters nearest an apex of the substrate immediately above the output unit is at a position shifted circumferentially by a predetermined angle from the apex.

A hand tool holder structure includes a first body, a second body, and a third body. The first body is provided with a receiving face, multiple first receiving grooves, a first limit portion, a first pivot portion, a recess, multiple first resting blocks, a snap-fit portion, and a first inclined face. The second body is provided with multiple second receiving grooves, a first receiving chamber, a third pivot portion, a first pivot hole, a second inclined face, a first locking block, a second limit portion, a first locking section, and a second locking section. The third body is provided with multiple third receiving grooves, a second receiving chamber, a fourth pivot portion, a second pivot hole, a third inclined face, a second locking block, a third limit portion, a third locking section, and a fourth locking section.

A power tool including a housing, a brushless direct current (DC) motor, an impact mechanism including a hammer and an anvil, an output drive device, a position sensor, and a controller. The position sensor is adjacent to a relief feature, which may be a recessed relief feature or a raised relief feature, and is configured to generate an output signal indicative of a position of the anvil. The controller is configured to calculate a drive angle based on the determined position of the anvil, and control the brushless DC motor based on the drive angle of the anvil.

A clamping tool is provided comprising a body, containing control circuits and electronic processing circuitry and having, at one end, a handle for gripping by an operator making the clamping, and on the other end, an arm. The arm comprises, at its free end, a seat that can be alternatively pluggable to a plurality of inserts suitable for engaging the tool with a corresponding type and / or dimension of a mechanical member on which the tool is configured to operate to perform a clamping operation. Sensor means are provided on the arm for detecting tightening conditions exerted on the mechanical member. Furthermore, a microprocessor electronic card is provided on the arm for receiving analogic signals from the sensor means, converting the signals into digital format, and handling transfer of the signals in digital format to the electronic processing circuitry.

A reversible, multiple-bit, hand tool for driving threaded fasteners and nuts includes a handle and a reversible tool holder assembly. The reversible tool holder assembly is insertable into the handle in either of two orientations to present two different ends provide multiple different configurations for driving different types of threaded fasteners and nuts. The reversible tool holder assembly includes a reversible adapter barrel, a first tool holder, a second tool holder, a first reversible bit holder, and a second reversible bit holder. Each of the tool holders can be selectively used as a nut driver with the holder assembly inserted in either orientation in the handle or can be removed from the adapter barrel and used separately as a power bit driver or a power nut driver (PND) that is received in any conventional chuck of a powered rotary tool.

The invention relates to the technical field of intelligent calibration, and discloses an intelligent calibration recognition method, device and equipment for an electric screwdriver head of an intelligent electric screwdriver and a storage medium, and the method comprises the steps: carrying out the data collection and feature extraction of the electric screwdriver head, and obtaining a feature data set; writing the equipment identification code and the feature data set into a storage chip of the electric screwdriver; constructing a projection neural network for back propagation training to obtain an intelligent calibration recognition model; when the electric screwdriver head is connected with a host, the equipment identification code and the feature data set in the storage chip are transmitted to the host; inputting the real-time working parameters and the feature data set into an intelligent calibration recognition model for parameter recognition and Kalman filtering calibration to obtain filtered calibration parameters; and judging a deviation value between the filtered calibration parameter and the initial calibration parameter, when the deviation value exceeds a preset threshold value, writing the filtered calibration parameter into the storage chip, and updating the calibration coefficient of the host, thereby solving the problem of inaccurate torsion caused by mixed use of the electric screwdriver heads.

An electric work machine can be compact. An electric work machine includes a motor, a tool holder rotatable with a rotational force generated by the motor, a substrate, a first light emitter including a first light-emitting element on a front surface of the substrate, and a second light emitter including a second light-emitting element on a back surface of the substrate.

A power tool includes a working portion with a motor housing enclosing a motor, a handle portion including a handle housing, a connecting member having a first end coupled to the handle housing and a second end coupled to the motor housing, and a vibration damping structure configured to reduce transmission of vibration from the motor housing to the handle housing.

A power tool includes a housing, a motor being controlled to run at a speed between 15000 rpm and 32000 rpm, an output spindle, a rotary impact assembly configured to transmit rotational motion with intermittent rotational impacts from a cam shaft to the output spindle, a hammer of the rotary impact assembly having an inertia between 400 kg·mm2 and 3000 kg·mm2, and a single stage compound planetary transmission including a first planet gear meshed with a sun gear and a second planet gear meshed with a ring gear, the compound planet gear being carried by a planet carrier to achieve a gear reduction ratio between 14:1 and 30:1. The power tool is configured to achieve a fastening torque of at least 900 foot-pounds (a) in a time of less than 3.5 seconds, and / or (b) with an input energy of less than 2500 Joules.

Systems and methods for providing an adaptive nut removal mode in a power tool. The power tool includes a housing and a motor. The motor includes a rotor and a stator. The stator includes a plurality of stator windings. A power switching circuit is configured to provide a supply of power from a power source to the motor. An electronic controller is configured to control the power tool to remove a fastener from a joint. The electronic controller is configured to monitor a torque of the motor, determine whether the torque of the motor is equal to or less than a threshold torque value, operate, when the torque is greater than the threshold torque value, the motor in an loosening mode while the torque of the motor decreases, and increase, when the torque is equal to or less than the threshold torque value, a speed of the motor.

The invention relates to an intelligent torque feedback and self-adaptive adjustment method and device and computer equipment, and the method comprises the steps: monitoring an actual torque value applied by an electric torque wrench in real time through a torque sensor; a preset target torque value is obtained, and the motor output torque of the electric torque wrench is automatically adjusted according to the target torque value and the actual torque value until the actual torque value reaches the target torque value; when the actual torque value reaches the target torque value, the electric torque wrench is controlled to be shut down, the current working condition is reported, and the working condition comprises the target torque value, the time for reaching the target torque, the number of times of completion and the number of times of failure, so that in the actual large-bolt fastening operation, the large-bolt fastening efficiency is improved. Through intelligent control, accurate torque adjustment, operation data recording and remote management, the purpose of improving operation efficiency and safety is achieved.

Power tools described herein include an electric motor, a driver blade, a trigger switch, a safety switch, and an electronic controller. The electronic controller is connected to the electric motor, the trigger switch, and the safety switch. The electronic controller is configured to initiate a retraction cycle by controlling the electric motor to move the driver blade from a first position to a second position, determine a position of the driver blade during the retraction cycle, initiate, in response to the position of the driver blade exceeding a first threshold, a braking cycle at the electric motor, and abort, in response to detecting a first activation of the trigger switch and a second activation of the safety switch, the braking cycle.

A locking structure for screwdrivers, characterized by the fact that it includes: a main body; a spindle rotatably connected to the main body, the spindle having a tool-holding device at an end opposite the main body and a locking assembly connected to the spindle; an actuating arrangement fitted over the outer periphery of the spindle and slidably connected to the spindle, the actuating arrangement comprising a detachably connected drive bushing and a fixed bushing; the actuating arrangement having a locked state and an unlocked state; wherein, in the locked state, the actuating arrangement is connected to the locking assembly to limit a tool connected to the tool-holding device; and In the unlocked state, the locking assembly removes the limitation of the tool connected to the tool holding device; wherein the locking assembly comprises at least two balls.