Abstract: A process for spot welding with addition of material to join metal sheets which comprises a process of spot welding that uses material deposited on one of the sheets with the welding interface between the areas of sheet to be joined, in order to avoid marks or indentation, with the surface cavities caused by the welding process, so that they are invisible after welding, surface treatment or painting; the process includes making the deposition of the material before welding on one of the sheets with any welding processes or also use of any additive manufacturing processes.

Abstract: Disclosed are a special tooling and method for electron beam welding of a cavity body and a beam tube of a superconducting niobium cavity. The special tooling includes a first clamping device for fixing a flange and a second clamping device for fixing a semi-cavity body, wherein the first clamping device and the second clamping device are fixedly connected. A pressing ring of the first clamping device is disposed around a beam tube of a superconducting niobium cavity and cooperates with a base plate to clamp and fix the flange. The second clamping device includes clamping arms evenly distributed along a circumference of the semi-cavity body, and each clamping arm includes a second pressing plate axially disposed along the beam tube and a pressing block that is disposed on an end portion of the second pressing plate and fixes an edge of the semi-cavity body.

Abstract: Disclosed is a dual heating type ultrasonic bonding apparatus including a stage, a part seating jig disposed on the stage, and an ultrasonic bonding unit disposed to correspond to the part seating jig and that bonds dissimilar parts seated on the part seating jig. The stage includes a first heater that transfers heat to the dissimilar parts through the part seating jig, and the ultrasonic bonding unit includes an ultrasonic horn that applies ultrasonic waves to the dissimilar parts, and a second heater coupled to the ultrasonic horn, and that transfers heat to the dissimilar parts through the ultrasonic horn.

Abstract: A device for friction stirring a workpiece material includes a body, a spindle, a driver, and a biasing element. The spindle is configured to rotate around a rotational axis. The driver is rotationally coupled to the spindle. The biasing element supports the driver and is configured to apply a biasing force in an axial direction, wherein the biasing element axially overlaps the spindle.

Abstract: A method for forming a large metallic component, a friction stir welded component and a friction stir welded blank are provided. The method includes positioning a first metallic plate and a second metallic plate in an abutting arrangement. The first metallic plate and the second metallic plate have corresponding faying surfaces at a point of abutment. A backing plate is attached spanning the point of abutment adjacent the faying surfaces. The first metallic plate is friction stir welded to the second metallic plate to form a friction stir weld along the faying surfaces. The backing plate receives an end of a friction stir welding tool curing the friction stir welding. The backing plate is removed to form a welded blank. The welded blank is formed into a component form. The component is heat treated and aged to form the large metallic component.

Abstract: A method and a system of forming a workpiece assembly including an intermediate element between first and second workpieces. A ring element is included in or on the intermediate element. The ring element is for rotating the intermediate element about the intermediate elements axis. With heating elements positioned between the intermediate element and the first and second ends of the first and second workpieces, portions of the intermediate element and the first and second workpieces are heated to a predetermined hot working temperature, in an inert (non-oxidizing) atmosphere. While the heated portions are at the predetermined hot working temperature, and while the intermediate element is rotated about its axis, one or both of the first and second workpieces are moved axially, to engage the first and second ends with the intermediate element.

Abstract: A method for monitoring a laser welding process for welding workpieces by a welding laser beam is provided. The method includes, during the laser welding process, directing a measuring beam of an optical coherence tomograph onto an interaction area in which the welding laser beam interacts with the workpieces. The measuring beam penetrates the workpieces in the interaction area in a through weld of the workpieces. The measuring beam penetrating the workpieces is incident on a reference element. The method further includes acquiring measured values using the measuring beam, defining a first measured value range corresponding to detection of a material of the workpieces, defining a second measured value range corresponding to detection of the reference element, and determine a ratio of a number of measured values lying in the first measured value range and a number of measured values lying in the second measured value range.

Abstract: Various embodiments of the present disclosure provide a strapping device configured carry out a sealing cycle to form a strap joint by welding two overlapping portions of strap together based at least in part on a weld parameter. A weld imager of the strapping device is configured to image the strap joint and generate image data based on the imaged strap joint. A controller of the strapping device is configured to receive the image data; determine, based on the image data, whether a weld-adjustment condition is met; and responsive to determining that the weld-adjustment condition is met, automatically adjust the weld parameter for a later sealing cycle.

Abstract: A method for monitoring a laser machining process for machining workpieces includes: for a plurality of machining steps, detecting a measurement signal for at least one measurement variable during a machining step; in a setting phase, defining a limit value for at least one monitoring parameter based on the measurement signals detected during the setting phase; and in a monitoring phase, determining a monitoring parameter value for each machining step based on the measurement signal, comparing the monitoring parameter value with the limit value to identify a faulty machining step, and determining whether a process change condition is met based on the measurement signal of at least one machining step. After a predefined setting time interval or number of machining steps during the setting phase, switching from the setting to monitoring phase, and switching back from the monitoring to setting phase when the process change condition is met.

Abstract: Disclosed are systems and methods to plan a path to form a part using an additive manufacturing system. The additive manufacturing system may include one or more additive manufacturing tools. The additive manufacturing tools may include arc welding tools and non-arc welding tools. The system may also manufacture the part based on the planned path.

Abstract: A laser machining device uses laser light to machine a workpiece disposed in a light-blocking liquid having light-blocking properties. A nozzle unit for the laser machining device includes an inner nozzle through which the laser light passes, a gas outlet port that blows a gas toward the workpiece in order to remove the light-blocking liquid from between the inner nozzle and the workpiece, and a swirler that causes the gas to swirl.

Abstract: Numerous embodiments are disclosed. In one, a laser-processing apparatus includes a workpiece handling system having an unwind assembly including an unwind spindle operative to support an unwind material roll of a workpiece, and a rewind assembly including a rewind spindle operative to support a rewind material roll of the workpiece and receive the workpiece from the laser-processing apparatus. In another, a laser-processing apparatus includes a workpiece handling system having a web handling assembly attached to an upper structure configured to support an unwind spindle supporting a unwind material roll of a workpiece, wherein the web handling assembly is positioned within a space above the fixture. The laser-processing apparatus further includes a web tensioner assembly configured to apply a biasing force on the tensioning roller to maintain the workpiece in a desired state of tension.

Abstract: A method for adjusting swinging of a galvanometer is provided in implementations of the disclosure. The method includes the following operations. Guide a processing laser to a laser processing surface via a first galvanometer, and establish a first correspondence between a reference coordinate system of the laser processing surface and coordinate-ranges of swinging angles of the first galvanometer. Perform region division on the laser processing surface in the reference coordinate system to obtain P calibrating selected-regions of the laser processing surface. Determine coordinate of a swinging angle of the first galvanometer corresponding to one of target points in Q calibrating selected-regions in the P calibrating selected-regions according to the first correspondence, to obtain coordinates of Q swinging angles of the first galvanometer.

Abstract: Embodiments of the inventive concept provide a substrate treating apparatus and a substrate treating method for not letting an irradiation region of a laser deviate from a target region, even if a shaking angle of a chemical deviates from an allowable range due to a vibration or an airflow. The inventive concept provides a substrate treating apparatus. The substrate treating apparatus includes: a substrate support unit configured to support a substrate having a chemical coated thereon; a laser generation unit configured to irradiate a laser to the substrate; and a light-transmitter positioned along a path at which the laser is irradiated.

Abstract: Various embodiments of a hermetic assembly and a method of forming such assembly are disclosed. The hermetic assembly includes a dielectric substrate having a first major surface and a second major surface, a patterned layer connected to the first major surface of the dielectric substrate by a laser bond, and a ferrule having a body and a flange extending from the body. The flange is welded to a welding portion of the patterned layer that is disposed between the flange and the first major surface of the dielectric substrate such that the ferrule is hermetically sealed to the dielectric substrate.

Abstract: There is provided a blank in which two or more starting materials that overlap each other are joined with each other by laser welding, including the blank has a single layer region, in which only one of the starting materials is present, and a multi-layer region, in which two or more of the starting materials overlap each other, laser welding is continuously applied to the multi-layer region and the single layer region, and one end of a laser weld zone is located at an end portion of the single layer region of the blank, and the one end forms a concave-shaped welding end portion having a concave shape when the blank is viewed from an end face.

Abstract: A method for laser beam joining of at least two joining partners, in which a laser beam device produces a continuous weld seam along an application path with a preferably very long path length. Irregularities in the weld seam due to high process speeds are avoided as follows: in a first process step, at least two weld seam sections spaced apart from one another in the longitudinal direction of the path, are respectively produced with an intermediate weld seam interruption. In a second process step the laser beam device produces in each weld seam interruption a further weld seam section, such that all weld seam sections merge together without interruptions, in particular with formation of the continuous weld seam.

Abstract: A beam block for laser cutting to produce a perforated tubular workpiece includes a tubular head section configured to be accommodated within an inner cavity of a semi-finished product during laser cutting, The tubular head section includes a recess at its first end configured to accept molten workpiece material into an inner surface of the tubular head section. A shaft section is located at a second end of the tubular head section. A plunger is configured to be reciprocated along an inner cavity of the tubular head section inner to the first end of the tubular head section to thereby eject molten workpiece material from the inner surface of the tubular head section. The plunger can be reciprocated periodically during laser cutting to eject molten workpiece material.

Abstract: A laser beam irradiating unit of a laser processing apparatus includes a laser oscillating mechanism. The laser oscillating mechanism includes a group setting unit configured to, on a condition that a pulsed laser beam is applied at shorter time intervals than a length of time that molten debris is generated, set the number of pulsed laser beams to be applied until a time that the molten debris is solidified and set the number of pulsed laser beams as one group. A time interval setting unit is configured to set a time until heat generated by application of the pulsed laser beams of the one group is cooled, which serves as a time interval between the one group and an adjacent group, and set time intervals of the pulsed laser beams constituting the one group. The laser oscillating mechanism sets a repetition frequency with the one group as one unit.

Abstract: Systems and methods for low-manganese welding alloys are disclosed. An example arc welding consumable may comprise: between 0.4 and 1.0 wt % manganese; strengthening agents selected from the group consisting of nickel, cobalt, copper, carbon, molybdenum, chromium, vanadium, silicon, and boron; and grain control agents selected from the group consisting of niobium, tantalum, titanium, zirconium, and boron. The grain control agents may comprise greater than 0.06 wt % and less than 0.6 wt % of the welding consumable. The resulting weld deposit may comprise a tensile strength greater than or equal to 70 ksi, a yield strength greater than or equal to 58 ksi, a ductility (as measured by percent elongation) of at least 22%, and a Charpy V-notch toughness greater than or equal to 20 ft-lbs at ?20° F. The welding consumable may provide a manganese fume generation rate less than 0.01 grams per minute during the arc welding operation.

Abstract: Systems and methods for low-manganese welding alloys are disclosed. An example arc welding consumable may comprise: between 0.4 and 1.0 wt % manganese; strengthening agents selected from the group consisting of nickel, cobalt, copper, carbon, molybdenum, chromium, vanadium, silicon, and boron; and grain control agents selected from the group consisting of niobium, tantalum, titanium, zirconium, and boron. The grain control agents may comprise greater than 0.06 wt % and less than 0.6 wt % of the welding consumable. The resulting weld deposit may comprise a tensile strength greater than or equal to 70 ksi, a yield strength greater than or equal to 58 ksi, a ductility (as measured by percent elongation) of at least 22%, and a Charpy V-notch toughness greater than or equal to 20 ft-lbs at ?20° F. The welding consumable may provide a manganese fume generation rate less than 0.01 grams per minute during the arc welding operation.

Abstract: A TIG welded joint in a high-Mn content steel material that can be formed with reduced occurrence of hot cracking during the welding process and has high strength and excellent cryogenic impact toughness. In the TIG welded joint, the high-Mn content steel material has a chemical composition including, by mass %, C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 18.0 to 30.0%, P: 0.030% or less, S: 0.0070% or less, Al: 0.010 to 0.070%, Cr: 2.5 to 7.0%, N: 0.0050 to 0.0500%, and O: 0.0050% or less, the balance being Fe and incidental impurities, and a weld metal has a chemical composition including C: 0.10 to 0.80%, Si: 0.05 to 1.00%, Mn: 15.0 to 30.0%, P: 0.030% or less, S: 0.030% or less, Al: 0.100% or less, Cr: 6.0 to 14.0%, and N: 0.100% or less, the balance being Fe and incidental impurities.

Abstract: Provided is a non-electroconductive flux capable of enhancing productivity and impact resistance of a connected structure to be obtained and suppressing occurrence of solder flash. The non-electroconductive flux according to the present invention contains an epoxy compound, an acid anhydride curing agent, and an organophosphorus compound.

Abstract: A method of mounting a connection element structure on a target is introduced and includes providing a lifting-laying tool to lift the connection element structure; moving the connection element structure to a default height above a mounting position of the target with the lifting-laying tool; and releasing or loosening the connection element structure from the lifting-laying tool to lay the connection element structure at the mounting position of the target. Therefore, the method can mount the connection element structure on the target, enhancing the efficiency of subsequent processes.

Abstract: A welding clamp for use in battery manufacturing is described. The welding clamp includes a plurality of clamping portions used to fit and clamp a case of a battery cell, the clamping portion includes a body portion and a connecting portion, and the connecting portion is detachably connected to the body portion; and a wear-resistant layer is connected to a surface of the connecting portion facing the case. In the process of welding the case and the end cover of the battery cell, through fitting and clamping the case by the clamping portion of the welding clamp, the clamping portion can play a position-limit role to the wall of the case to relieve the deformation of the case during the welding process, thereby improving the welding quality of the case and the end cover and thus improving the production quality of the battery cell.

Abstract: A material positioner can utilize characteristics of the material being welded to locate the material to be welded. In some embodiments, the material positioner has a voice coil actuator (VCA) for material positioning. In some embodiments, the VCA is sent a signal based on the characteristics of the material being welded and/or the type of weld being completed. In at least some embodiments, a single welder can be used over a wide range of materials. In some embodiments, end-uses that require components to be in generally mating engagement for further processing can benefit from a material positioner.

Abstract: Systems and methods in which worn railroad rails and wheels are repaired. For rail repair, a mobile additive manufacturing unit (i.e., 3D printer) operates along the rail and dispenses molten metal on the previously prepared portion of the rail. Reinforcing composite materials in powder form or pieces of composite materials may be added to the molten metal to enhance mechanical properties. For wheel repair, a fixed additive manufacturing unit is used in the same or similar manner as the mobile additive manufacturing unit for the rails albeit the wheel is rotated relative to the additive manufacturing unit. The repaired surface of the rails and wheels have dimension accuracies and surface finishes that are substantially the same as the original rails and wheels with the same or better mechanical strength and hardness as the original after resurfacing with grinding or milling tools.

Abstract: An overlay welding method includes irradiating a surface of a metal member with a laser beam while supplying a weld metal powder, and performing overlay welding on the surface of the metal member, and repeatedly performing a weld bead formation step of melting and solidifying the weld metal powder with the laser beam to form a plurality of weld beads on the surface of the metal member. Each of the plurality of weld beads has one portion in a width direction overlapping each other. In the overlay welding method, in a case of forming an adjacent weld bead, which is a weld bead adjacent to a previously formed weld bead, an energy density of the laser beam is adjusted to be higher at a portion of the adjacent weld bead overlapping the previously formed weld bead than at a portion not overlapping the previously formed weld bead.

Abstract: A method of making a heat exchanger includes arranging a plurality of tubes in a formation; welding the plurality of tubes to a header by welding each tube of the plurality of tubes to a respective header slot of a plurality of header slots in the header; coupling a cover to a liquid-side surface of the header to cover an end of each tube of the plurality of tubes; applying flux to an air-side surface of the header and to the plurality of tubes; removing the cover from the header; and brazing each tube of the plurality of tubes to the respective header slot of the plurality of header slots.

Abstract: Aspects of the present disclosure deal with a tool for removing shaft components from a shaft. In one embodiment, the tool is a shaft component separator with an inflatable bladder configured to wrap circumferentially around a shaft. In one embodiment, the bladder is slotted to form a C-shaped profile so that a user can position the bladder perpendicularly around the shaft, adjacent a removable shaft component. Extending from the bladder is an inflation stem, which enables the user to move the ring between a deflated state and an inflated state via the introduction and/or removal of a fluid. Typically, the user positions the bladder between a fixed component and the removable shaft component, such that the fixed component and removable shaft component form a sandwich arrangement with respect to the bladder. Expansion of the bladder, via fluidic pressure, applies increasing axial force to the removable shaft component until the removable shaft component breaks free from the shaft.

Abstract: Method for producing a dentist tool formed by an overlay to be used by a dentist in removing tooth structure, said method comprising the steps of: acquiring three-dimensional data relating to a shape of a tooth and at least a part of a neighbouring tooth; processing said three-dimensional data with a computer so as to determine an overlay fitting said tooth and fitting at least said part of said neighbouring tooth; further processing said three-dimensional data with said computer so as to determine a predetermined part of tooth structure to be removed from said tooth so as to prepare said tooth for further treatment; determining at least two guiding edges of which a first and a second guiding edge are spaced apart from each other by a distance d of at least 0.

Abstract: A tool head assembly for crimping, the assembly including an internal cam that spins freely on a stationary shaft in one direction and locks onto the shaft in the other direction. That cam rotates against the moving slide forcing to move away from the stationary shaft opening a gap between rollers. A controller is programmed to have the drive rotate in one direction for a set time period, then reverse the rotation to begin the crimp process. The start rotation of the drive rotates the cam and opens the roller gap. The forward rotation allows the cam to swing, closing the gap and rotating the rollers around a seal. The tool eliminates the air cylinder and related pneumatic hoses and valve making the head smaller and allows a controller to communicate with any OEM production system to verify the tool has been used and was used correctly.

Abstract: An application device for joining adhesive-tape sections that includes: a holder assembly having a plurality of holding devices that are movable relative to one another, each holding device configured to hold an adhesive-tape section such that a first main joining surface, a first end joining surface, and a second end joining surface of the adhesive-tape section are exposed; and a plurality of actuators. Further, each of the holding devices is configured for movement between first and second joining configurations. In the first joining configuration, each holding device holds an adhesive-tape section and each of the adhesive-tape sections are spaced apart from one another. In the second joining configuration, each holding device holds an adhesive-tape section wherein the first end joining surface of the adhesive-tape section bears against the second end joining surface of another adhesive-tape section, thus defining a continuous and closed adhesive adhesive-tape web.

Abstract: Disclosed is a selective field-assisted machining system. The system includes a micron-level high-speed identification module, an in-situ laser assisted module, an ultrasonic vibration module, an energy field loading high-speed control module, and a diamond tool. The micron-level high-speed identification module is used to quickly identify the type of a material substrate of a workpiece to be processed, process the identification information into a corresponding control signal, and send same to the energy field loading high-speed control module to implement selective processing of the workpiece to be processed, i.e. to process brittle particles using in-situ laser assisted machining and to process a soft metal substrate using ultrasonic vibration processing. In the present invention, ultra-precision cutting of brittle particles and a soft metal substrate can be completed at the same time in a single processing process.

Abstract: A connecting mechanism includes a first section and a second section engageable with the first section. The second section includes a locking assembly configured to engage a stud with a roller bearing in the first section. That is, the locking assembly is actuatable between a locked state configured to lock the first section to the second section when the first and second sections are engaged and an unlocked state configured to allow the second section to engage with or disengage from the first section. The locking assembly includes a linkage arm engaging a handle and a wedge having a tapered section. The handle is actuatable between a locked position configured to place the locking assembly in the locked state by advancing the tapered section of the wedge and an unlocked position configured to place the locking assembly in the unlocked state by retracting the tapered section of the wedge.

Abstract: The invention relates to an interchangeable milling adapter (20) for a work table (60), which comprises a receptacle (21) for a milling machine (70) and an angular adjustment (22). At the same time, an angular position (WP1, WP2) of the receptacle (21) in relation to the work table can be adjusted using the angular adjustment (22). Furthermore, a work table, a milling unit and their use for adjusting a milling machine are described.

Abstract: Provided is a control device for a machine tool capable of stably achieving an effect of suppressing regenerative self-excited chatter vibration. This control device for a machine tool includes a fluctuation command calculation unit configured to calculate a fluctuation command based on a speed command for a main spindle motor of the machine tool and a fluctuation condition for causing a rotation speed of the main spindle motor to periodically fluctuate, and a speed control unit configured to control the rotation speed of the main spindle motor based on the speed command and the fluctuation command. The fluctuation command calculation unit is configured to calculate the fluctuation command by calculating a frequency of the rotation speed that periodically fluctuates of the main spindle motor based on the rotation speed of the main spindle motor based on the speed command and a frequency rate that is the fluctuation condition.

Abstract: The present invention is to provide a control device for a machine tool that performs oscillating cutting and that enables loads on a machine tool to be versatilely reduced without depending on the configuration of the machine tool.

Abstract: This machine tool is provided with: a sensor (30-1, 30-2, 30-3, 30-4) which is disposed in the vicinity of an opening for loading a workpiece and which measures the motion of an object approaching the opening; a storage unit (18) storing a rule for classifying non-processing time into setup time and non-setup time on the basis of the motion of the object relative to the sensor; a determination unit (14) which, when a processing program is not being executed, determines whether the current state of the machine tool corresponds to setup time or non-setup time on the basis of the motion of the object and the rule stored in the storage unit; and an output unit (20) which produces an output indicating whether the current state of the machine tool corresponds to setup time or non-setup time.

Abstract: Disclosed is a roller taper grinding method for a planetary roller screw mechanism. The method includes steps as follows: step 1: determining basic parameters and a bearing capacity of a planetary roller screw mechanism to be machined; step 2: establishing deformation and force balance equations of the planetary roller screw mechanism according to the basic parameters and the bearing capacity of the planetary roller screw mechanism determined in step 1; step 3: iteratively computing an optimal grinding taper angle of roller grinding according to the deformation and force balance equations established in step 2; step 4: determining process parameters of roller grinding; and step 5: grinding a roller taper of the planetary roller screw mechanism by a machine tool according to the process parameters determined in step 4.

Abstract: An elastic emission machining apparatus includes a machining element having a non-spherical shape that is configured to spin about an axis of rotation, a tank, and a driving system. The tank has a chamber positioned to receive the machining element and a slurry comprising a mixture of a liquid and chemically reactive fine particles. The driving system is coupled to and configured to engage the machining element to spin about the axis of rotation adjacent to a surface of the workpiece to accelerate the chemically reactive fine particles through a gap between the machining element and the surface of the workpiece.

Abstract: A method and a system for planarizing a membrane is disclosed. In one aspect, the method includes providing a resilient membrane and planarizing the surface of the membrane with a conditioning tool. The planarized membrane may be used in chemical mechanical planarization of a wafer. The method further includes finishing the surface of a wafer with the planarized membrane.

Abstract: This polishing pad has a polishing layer that comprises a polyurethane resin foam derived from an isocyanate-terminated prepolymer and a curing agent, wherein: the distance between hard segments in the polishing layer as measured by small-angle X-ray scattering is 9.5 nm or less; or the ratio (NC80/CC80) of the content proportion by weight (NC80) of an amorphous phase in the polishing layer as measured by pulse NMR at 80° C. to the content proportion by weight (CC80) of a crystalline phase in the polishing layer as measured by pulse NMR at 80° C. is 2.6-3.1, and the ratio (NC40/CC40) of the content proportion by weight (NC40) of an amorphous phase in the polishing layer as measured by pulse NMR at 40° C. to the content proportion by weight (CC40) of a crystalline phase in the polishing layer as measured by pulse NMR at 40° C. is 0.5-0.9.

Abstract: Provided is a polishing pad having a high following performance even when a surface to be polished is a curved face. A polishing pad (1) in an embodiment of the present invention includes a polishing layer (2) having a polishing face (21) and a support layer (3) that is formed from a material softer than the polishing layer (2) and is fixed to a face (22) opposite to the polishing face (21) of the polishing layer (2). The support layer (3) has a hardness of not less than 30 and less than 70 in terms of F hardness.

Abstract: The present disclosure provides a chemical mechanical polishing device including a retaining ring and a wafer carrier and a polishing method. The retaining ring is configured on a polishing pad and includes an inner sidewall defining an opening and an outer sidewall opposite to the inner sidewall. The wafer carrier is configured on the polishing pad and is capable of placing a wafer disposed thereon into the opening and facing the polishing pad. The retaining ring has a notch at the corner adjacent to the wafer and the polishing pad.

Abstract: This application describes a magnetic valve for controlling the flow of media in wheel-blast style abrasive blasting cabinets. The valve features a novel air aspiration system comprising of aspiration inlets, chamber, and outlets, in a configuration which guarantees passage of air from ambient into the peening system regardless of installation. This system acts as a passive aspiration source to counteract the negative pressures imposed by the wheel-blast blades in the valve's off-state. This arrangement eliminates the need for other means of aspiration to be installed in the peening system by the end user.

Abstract: A clamping unit includes a clamping mechanism that takes a clamping state when a pressure in a pressure-acting chamber defined in a case is equal to or less than a predetermined threshold value, and takes an unclamping state when the pressure in the pressure-acting chamber is larger than the predetermined threshold value. The case of the clamping unit has a first outer side surface and a second outer side surface that are provided with a first opening portion and a second opening portion, respectively, which are in communication with each other through a supply and discharge port via the pressure-acting chamber.

Abstract: Pliers include two plier members connected through a pivot that allows the upper handle to move a lower jaw and a lower handle to move an upper jaw about the pivot. The upper jaw and lower jaw together define a head of the pliers. The pliers include one or more striking surfaces located at the head.

Abstract: A multi-functional screwdriver structure contains a body, a grip, a receiving chamber, a cap, an accommodation sleeve, multiple sockets, a shank, and a movable connector formed on a front end of the shank and connected with an orifice of a first screwdriver bit by using a screw bolt. The first screwdriver bit includes a square socket joint extending from a front end thereof, and the first screwdriver bit includes a hexagonal hole defined on a front end of the square socket joint. A bit holder is connected on a front end of the grip and is configured to receive the shank in a center of the bit holder, and the bit holder includes multiple apertures defined around the center thereof and configured to accommodate multiple second screwdriver bits.

Abstract: Systems and methods for using high-impact fasteners to couple components of a solar power system together to prevent these components from any movement or slippage relative to each other. A strap may be secured over a top surface of the high-impact fasteners and around the components to prevent a disengagement of the high-impact fastener from the components and a separation of the components.