15results about How to "Curb bending" patented technology

The invention discloses a power chuck machining device capable of compensating clamping and automatically pushing materials, and particularly relates to the field of chuck machining, the power chuck machining device comprises a chuck base, a plurality of clamping jaws are arranged on the chuck base, and the multiple clamping jaws clamp and fix a thin floating disc by synchronously and radially moving along the surface of the chuck base; a supporting piece is arranged on the chuck base and makes contact with the bottom of the thin floating disc. The supporting piece is arranged to support the thin floating disc, the supporting force of the thin floating disc is effectively increased, the possibility that the thin floating disc deforms due to external force in the turning process is reduced, higher rigidity is provided, vibration and bending of the thin floating disc can be effectively restrained, the stability in the machining process is improved, and the machining precision is ensured; and by arranging the adsorption mechanism, the action of force can be more uniformly distributed, vibration is reduced, the turning quality is improved, a smoother surface is obtained, and the size precision and the surface quality in the turning process are further ensured.

The invention discloses an auxiliary device for welding a large H-shaped supporting beam for a steam generator and a welding method.The device comprises a plurality of sets of supporting units, two wing plates can be supported from the inner side to the outer side, the wing plates are prevented from deforming during welding, a medium-frequency heating rope is fixed to the wing plates through a heating rope fixing piece, and the welding efficiency is improved. In addition, at least two supporting rings are arranged on the outer portion of the supporting unit and used for being matched with a rolling wheel frame to rapidly turn over the large H-shaped supporting beam, and therefore a welding seam can be conveniently welded at a flat welding position.

The invention provides an optical system and electronic equipment. The optical system comprises a lens group, the lens group comprises a first lens group, a second lens group and a third lens group, and the first lens group comprises a first lens, a second lens and a third lens; the second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens; the third lens group comprises a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens; the optical system satisfies the following conditions: 1.85 < FG1 / FG3 < 2.95; f23 / (CT2 + CT3) is more than-10.90 and less than-9.10; f45 / T34 is more than 1.90 and less than 3.60; fG1 is the combined focal length of the first lens group, FG3 is the combined focal length of the third lens group, F23 is the combined focal length of the second lens and the third lens, CT2 is the center thickness of the second lens, CT3 is the center thickness of the third lens, F45 is the combined focal length of the fourth lens and the fifth lens, and T34 is the air interval between the third lens and the fourth lens on the optical axis. The optical system realizes the balance of high performance and miniaturization.

The present application relates to the technical field of machining tools, in particular to a numerical control machining tool for long shaft parts, comprising a tool main body, two sets of clamping assemblies, two sets of connecting assemblies, a driving assembly and two sets of pushing assemblies. At least one set of the connecting assemblies is arranged to slide along the axial direction. An elastic member one is arranged between the connecting assembly and the clamping assembly, and the elastic member one is stretched by moving the connecting assembly to apply an axial tension to the part. The pushing assembly is arranged in the clamping assembly and comprises a pushing member and a driving member one, and is used to abut against the end face of the part. The present application further comprises an auxiliary assembly and a limiting assembly. When the clamping assembly is released to avoid the end machining tool, the limiting assembly locks the position of the pushing member, and cooperates with the auxiliary assembly to assist the fixing of the part in the radial and axial directions. The axial stretching mechanism effectively compensates for the thermal deformation of the long shaft part and suppresses the machining vibration.

The utility model relates to a heat exchange tube transfer device and a heat exchange tube transfer system, the heat exchange tube transfer device and the heat exchange tube transfer system are used for transferring a heat exchange tube among a plurality of stations, the heat exchange tube extends along a first direction, the plurality of stations are arranged along a second direction perpendicular to the first direction, and the transfer device comprises a cross beam extending along the second direction above the plurality of stations; the tube grabbing mechanism is borne by the cross beam in a mode of being capable of moving in the second direction and is configured to grab and release the heat exchange tubes; the two supporting frames are supported at the two ends of the cross beam respectively in the mode that a plurality of stations are arranged between the two supporting frames in a spaced mode, and each supporting frame comprises a stand column, a first supporting frame and a second supporting frame, the transverse supporting arm is fixed to the top end of the stand column and extends from the top end of the stand column to the other supporting frame, and the transverse supporting arm extends in the second direction below the cross beam and supports the cross beam. According to the pipe grabbing mechanism, bending of the cross beam can be restrained under the condition that the size of the cross beam is not increased, then accurate control over the moving position of the pipe grabbing mechanism is facilitated, and transferring operation of the heat exchange pipes can be conducted more smoothly.

The utility model relates to the technical field of pipe machining, in particular to a heat exchange pipe transfer device and transfer system which are used for transferring a heat exchange pipe among multiple stations, the heat exchange pipe extends in the first direction, the multiple stations are arranged in the second direction perpendicular to the first direction, and the transfer device comprises a cross beam, a first guide rail and a second guide rail; the cross beam is erected above the multiple stations, extends in the second direction and is provided with a first guide rail extending in the first direction; a chain disposed at the cross beam, and at least a portion of the chain configured to move back and forth in a second direction; the pipe grabbing mechanism comprises a first sliding block in sliding connection with the first guide rail, a plurality of clamping jaws arranged at intervals in the first direction and a plurality of air cylinders driving the clamping jaws correspondingly, the clamping jaws are configured to be capable of grabbing and releasing the heat exchange pipes, the air cylinders share the same air source, and the pipe grabbing mechanism is connected to the chain; and the chain is driven by the chain to move back and forth along the second direction.

The semiconductor laser device includes: a semiconductor laser element having a plurality of mesa portions; and an auxiliary seat having a recessed portion in which a plurality of mesa portions are disposed. An electrode corresponding to each of the plurality of mesa portions is electrically connected to the wiring portion via a welding member. The first reference surface of the semiconductor laser element is in surface contact with the second reference surface of the auxiliary seat. A partition wall portion having a second reference surface is provided between the recesses adjacent to each other. When viewed from the Y-axis direction, the distance in the X-axis direction between the side surface of the recessed portion and the side surface of the mesa portion facing the side surface becomes shorter from the top surface of the mesa portion toward the base end portion in the Z-axis direction.

The invention relates to the technical field of cutting fluids, in particular to a superhard brittle nonmetal material diamond wire cutting fluid and a preparation method thereof.The superhard brittle nonmetal material diamond wire cutting fluid at least comprises, by mass, 10-20% of organic amine, 2-5% of organic acid, 20-30% of polyethylene glycol, 0.1-0.5% of quaternary ammonium salt, 0.1-0.5% of benzotriazole, 0.1-0.5% of nonionic surfactant and the balance water. By optimizing a formula system of the cutting fluid, after the provided cutting fluid is used for cutting superhard and brittle materials such as silicon nitride, aluminum oxide and special glass, the surface quality of products is high, the degree of finish is high, and no trace is generated.

This utility model relates to the technical field of ring-pressed thin-walled stainless steel pipes, specifically a ring-pressed connection type thin-walled stainless steel pipe, including a thin-walled stainless steel pipe body. One end of the thin-walled stainless steel pipe body is clamped to a pipe fitting. The outer surface of the pipe fitting is ring-pressed with an annular groove and an annular arc groove. The annular groove is provided with a lower clamp and an upper clamp respectively. Two symmetrically arranged U-shaped seats are fixedly connected to one side of the lower clamp and the upper clamp respectively. Transverse pressure blocks are clamped inside the four U-shaped seats. This utility model uses transverse pressure blocks and positioning blocks, and further supports them with support blocks arrayed on the inner side of the arc plate. This design provides stable external support for the connection of the thin-walled stainless steel pipe. This structure can effectively suppress the bending and deformation of the pipe caused by its own weight, fluid pressure or external vibration, significantly enhance its bending stiffness and overall mechanical stability, and improve its long-term safety and reliability.

The utility model discloses a shore-based movable concrete lining plate modularization collaborative repairing work station which comprises a portal frame body, the portal frame body comprises two supporting frame bodies and a connecting frame body connected between the two supporting frame bodies, and the two supporting frame bodies and the connecting frame body are each of a truss structure. Compared with the prior art, the two supporting frame bodies and the connecting frame body in the ashore equipment are all of a truss structure, and compared with a solid web girder structure, the self weight can be reduced by 30%-50%, and the transportation and hoisting difficulty and the energy consumption of a driving system are reduced; and a multidirectional stress system is formed while the light weight of the structure is guaranteed, bending, shearing and torsional deformation are effectively restrained, the overall structural rigidity of the portal frame body is guaranteed, and the use requirement can be met.

The present invention provides a belt member for an electrophotographic device, which, for long-term storage, suppresses the occurrence of wrinkles and bends, suppresses the sliding noise of a cleaning blade, and has a good appearance and good adhesion between a surface layer and a base layer. The belt member (10) for an electrophotographic device has a surface layer (14) on the outer peripheral surface of a cylindrical base layer (12), and the surface layer (14) is configured as a cured body of a resin composition containing 100 parts by mass of a fluororesin having a hydroxyl group, with respect to 100 parts by mass of the fluororesin having a hydroxyl group. The present invention relates to an adhesive composition comprising: 10-30 parts by mass of an isocyanate curing agent having isocyanate groups at both ends and having a molecular weight of 600-4000 g / mol, or 5-18 parts by mass of an isocyanate curing agent having an isocyanate group at a single end; from 5 parts by mass to 10 parts by mass (inclusive) of a fluorine-based surfactant; and 1.0-5 parts by mass (inclusive) of a silane coupling agent having an amino group or an isocyanate group.

This utility model discloses a wear-resistant and antistatic PP sheet, relating to the field of PP sheet technology. It includes a substrate with structural grooves on its inner wall, a metal-carbon composite inner layer mounted on its outer wall, a wear-resistant composite surface layer mounted on the outer wall of the metal-carbon composite inner layer, and a wear-resistant frame mounted on the outer wall of the wear-resistant composite surface layer. The side walls of the wear-resistant frame have weight-reducing grooves. This utility model utilizes the substrate, structural grooves, and metal-carbon composite inner layer. The structural grooves are formed by an array of equilateral triangles with equal spacing. Triangles are the most geometrically stable structure, and their rigid connections between sides and corners effectively resist deformation, suppressing overall substrate bending and improving compressive stiffness. Simultaneously, the metal-carbon composite inner layer, composed of copper powder, graphene, carbon black, and other materials, forms a conductive network that conducts internal static electricity, achieving an antistatic effect.

Provided is a separator for a lithium secondary battery, the separator including: a porous polymer substrate; and a first binder layer formed on at least one surface of the porous polymer substrate and including a particulate type polyvinylidene fluoride (PVDF)-based binder polymer, wherein the first binder layer i) includes a caprolactone-based dispersant, or ii) has a surface roughness (Sa) of 0.12 µm to 0.22 µm.

The invention relates to an electrode member. The electrode member includes a base material including a resin base material and a conductive layer formed on the resin base material, and an active material layer formed on the conductive layer, and the resin base material has a recessed portion recessed inward in a thickness direction parallel to a lamination direction at a position overlapping the active material layer in the lamination direction of the base material and the active material layer.

This invention relates to the field of pressure sensor packaging technology and discloses a micro differential pressure sensor packaging structure, including a PCB board. A MEMS chip is bonded to the inside of a mounting slot using conductive adhesive. Gold wires are mounted at one end of both the ASIC chip and the MEMS chip, with the other end of the gold wires mounted on the upper surface of the PCB board. Gold wires are also installed between the ASIC chip and the MEMS chip. A cover is mounted on the upper surface of the PCB board. A limiting structure is provided at the upper end of the substrate, and the MEMS chip is positioned in the middle of the limiting structure. This invention utilizes the fact that the thermal expansion coefficient of the substrate is between that of the MEMS chip and the PCB board, forming a gradient transition. This reduces interfacial stress caused by material expansion differences during temperature changes. The highly thermally conductive ceramic can quickly disperse the working heat of the MEMS chip, reducing the temperature gradient and avoiding piezoresistive bridge imbalance caused by local thermal deformation, thus preventing zero-point drift of the MEMS chip. Simultaneously, the high hardness and Young's modulus of the ceramic suppress the transmission of energy from PCB board bending or vibration, protecting the MEMS chip from external mechanical impacts.