20results about How to "Improve straightness" patented technology

A kind of copper clad steel grounding wire is used to straightening device, it is related to copper clad steel grounding wire straightening technical field, including mounting plate and the support frame for supporting mounting plate, a group of straightening rollers for extruding grounding wire is rotationally arranged on mounting plate, and once straightening area is formed between two straightening rollers, which can be passed through by grounding wire, first sliding plate capable of sliding along the direction perpendicular to the movement direction of grounding wire is arranged on mounting plate, and another straightening roller is rotationally connected with first sliding plate;Multiple auxiliary rollers are arranged on the side of straightening roller away from the entry of grounding wire, and multiple auxiliary rollers are respectively located at the two sides of grounding wire, so that secondary straightening area is formed between the two sides of auxiliary roller of grounding wire, which can be passed through by grounding wire, multiple second sliding plates capable of sliding along the direction perpendicular to the movement direction of grounding wire are arranged on mounting plate, and second sliding plate is located at the same side with first sliding plate, corresponding second sliding plate is rotationally connected with the side auxiliary roller, and the interval between straightening rollers can be adjusted to adapt to grounding wire of different diameters.

The application discloses a high-frequency pulse compound direct-current precise micro-TIG arc spot welding power supply and a spot welding method, wherein the power supply comprises a first direct-current power supply, a second direct-current power supply, a high-frequency switching circuit and a control system; the second direct-current power supply is connected with the high-frequency switching circuit, and a pulse current output by the switching circuit is superimposed with direct current output by the first direct-current power supply to provide the arc load; and the control system comprises a DSP controller, a driving circuit, a sampling circuit, a fault detection circuit and the like. The power supply can provide high-frequency pulse current for the micro-TIG arc, improve the transient current density of the micro-TIG arc, and greatly reduce the occurrence of defects such as micro-TIG arc anode spot jumping and easy arc breaking, so that the arc current of stable welding can be reduced to 2A, the stability of the micro-TIG arc and the quality of the spot welding joint are obviously improved, and the application range of the micro-TIG arc welding process is expanded. The application can be widely applied to arc welding power supply equipment.

The application provides a cleaving device and a cleaving method, and relates to the technical field of semiconductors. The first platform and the second platform are arranged, and when the first platform and the second platform move to contact each other, the first platform and the second platform can be used for fixing a product to be cleaved. A cutter can be used to draw a test line on the upper surface of the product to be cleaved. A CCD camera can be used to shoot the test line and display a scratch diagram of the test line. An angle adjusting mechanism can adjust the pitch angle and the rotation angle of the cutter according to the scratch diagram, so that the cutter tip contacts the upper surface of the product to be cleaved at an optimal line drawing angle. The optimal line drawing angle can also be referred to as the angle at which the cutter tip is perpendicular to the product to be cleaved. Therefore, a cleaving line with high precision, good flatness and good stability can be drawn on the product to be cleaved. Even if the cutter is worn, the pitch angle and the rotation angle of the cutter can be adjusted, so that the cutter tip contacts the product to be cleaved at the optimal line drawing angle, and the stability of the cleaving effect is good.

The utility model discloses a kind of vehicle body assembly and vehicle, it is related to vehicle technical field, wherein, vehicle body assembly includes: side window sheet metal, for fixing side window glass and setting close to the top of vehicle;Interior roof, with side window sheet metal at the same side of side window glass, the periphery of interior roof close to side window sheet metal is equipped with bending part, bending part is bent towards the direction close to side window sheet metal;Mounting seat, fixed in interior roof;And clamping piece, one end of clamping piece is connected with mounting seat, the other end of clamping piece clamps side window sheet metal, so that interior roof is installed in side window sheet metal by mounting seat and clamping piece.The technical scheme provided by the utility model improves the convenience of interior roof and side window sheet metal assembly, and improves the yield and the aesthetic degree of vehicle.

This utility model discloses a user-friendly guide and unhooking clamp for horizontal directional drilling rigs, comprising a base plate. Lifting components are symmetrically arranged at the front and rear ends of the base plate. A guide block is positioned above each of the lifting components. The guide block has an arc-shaped groove inside, and a roller groove is formed along the outer side of the arc-shaped groove inside the guide block. An auxiliary roller is rotatably mounted inside the roller groove of the guide block. A vertical plate is fixedly mounted on one side of the base plate, and a mounting plate base is fixedly mounted on one side of the vertical plate. A unhooking mechanism is provided on one side of the mounting plate base. This design enables the support and guidance of the drill rod, increasing its practicality and solving the problem of insufficient support and guidance for the drill rod in horizontal directional drilling rigs, resulting in poor usability.

The invention belongs to the technical field of straight seam steel pipe machining, particularly relates to a straight seam steel pipe machining method, a straight seam steel pipe manufactured through the straight seam steel pipe machining method, a welding core and a welding flux, and aims to solve the problem of the forming quality of the two sides of a welding seam of the straight seam steel pipe. The processing method of the straight seam steel pipe is characterized by comprising the following steps: rolling for the first time; welding for the first time; rolling for the second time; and welding for the second time. According to the technical scheme, the problem of straight edges on the two sides of a welding seam can be effectively solved, welding seam angular distortion is reduced, and the roundness and straightness of a steel pipe are improved.

The utility model discloses a kind of straightening device for shaft workpiece machining, it includes base, two support frames, measuring piece and straightening piece, two The support frame, the measuring piece and the straightening piece are located on the base, two The support frame is symmetrically arranged, the measuring piece is located above between two The support frame, the straightening piece is located above between two The support frame, the straightening piece and the measuring piece are horizontally placed. The present application has the effect of improving the working efficiency of straightening shaft workpiece.

The utility model relates to the technical field of laser processing, more specifically, the utility model relates to a kind of honeycomb jacket laser welding equipment, comprising: welding workstation, its first direction's both sides are respectively connected with feeding mechanism and discharging mechanism;Welding mechanism, it has two welding heads, the welding head is located above the welding workstation, and two the welding head can be moved along the second direction perpendicular to the first direction;Pressing mechanism, it is set above the welding workstation, to the plate on the welding workstation is pressed tightly.The utility model provides a kind of honeycomb jacket laser welding equipment that can realize double welding head simultaneous welding, and through the feeding mechanism and discharging mechanism of towed type guarantee the quick feeding and discharging of plate, realize the quick movement of plate, to improve the welding efficiency of honeycomb jacket.

This invention belongs to the field of metallurgical technology, and particularly relates to a 420MPa grade galvanized low-alloy high-strength steel and its production method. The steel composition by mass percentage is as follows: C: 0.06%~0.08%, Si: 0.05%~0.08%, Mn: 0.95%~1.15%, P≤0.025%, S≤0.010%, Al: 0.015%~0.060%, O≤0.0060%, N≤0.0060%, V: 0.01%~0.03%, Ti: 0.01%~0.03%, with the balance being Fe and unavoidable impurities. The advantages are: through V-Ti composite microalloying and controlled hot and cold rolling processes, synergistic effects of fine grain strengthening and precipitation strengthening are achieved. The ferrite grain size is 2~5μm, the (Ti,V)C precipitate size is 20~30nm, the steel plate yield strength is ≥420MPa, and the elongation is maintained above 20%.

This application relates to the field of aerospace manufacturing process equipment technology, specifically to a flexible paperclip winding machine for anodizing aerospace aluminum alloys, and particularly to a specialized tooling with adjustable dimensions for the efficient manufacture of paperclip fixtures. The positioning block is adjustable, allowing for rapid adaptation to the manufacturing needs of paperclip fixtures of different specifications; the guiding system ensures the straightness of the aluminum wire, and mechanical forming guarantees product consistency; manual operation is simple, reducing the skill requirements for operators; it can handle aluminum wire materials of different diameters and is suitable for various aerospace aluminum alloy materials; the winding machine adopts a modular design, allowing for quick replacement of key components, reducing equipment maintenance time and costs.

The utility model discloses a gun drill guiding auxiliary device of promoting pressure injection rod deep hole machining precision belongs to gun drill processing technical field, including auxiliary frame, the auxiliary frame upper surface rotationally connected with the fixed frame, and the auxiliary frame upper surface slidingly connected with the lower guide block, and the lower guide block upper end slidingly connected with the upper guide block, and the upper guide block outside is pasted with the fixed frame inner wall simultaneously, the upper guide block inside is all set up with the lower guide block inside connection groove, and the connection groove surface fixedly connected with the reinforcing rib. The gun drill guiding auxiliary device of promoting pressure injection rod deep hole machining precision, through setting up the auxiliary frame and the fixed frame, effectively avoid the gun drill and appear deviation when initial drilling, from the machining starting stage just has guaranteed the position precision of deep hole machining, restricts the displacement of gun drill in each direction simultaneously, controls position deviation in the extremely small range, effectively reduces the accumulation of position deviation, guarantees the straightness and cylindricity of deep hole machining.

This invention relates to a welding fixture for the bed of a metal cutting machine, comprising a first support base, a second support base, two inner clamping plates, two outer clamping plates, a plurality of first slides matching the first support base, and a plurality of second slides matching the second support base. The first support base includes a body that matches the first slides and a longitudinal beam that matches a shaped hole on the second support base. The body has two positioning arms and set bolts whose ends can extend into the shaped hole to contact and separate from the longitudinal beam. The second support base has a pressure arm unit comprising a slider that can controllably move relative to the second support base and has multiple pressure arms. One end of each clamping plate is fixedly mounted on each first slide, and the other end matches a shaped hole on each second slide. The second slides have set bolts whose ends extend into the shaped hole to contact and separate from the clamping plates. This invention ensures the assembly accuracy between the guide rail and the bed, improves assembly efficiency, and enhances the consistency of assembly quality.

The tunnel construction rapid escape device comprises a pipe body, the pipe wall of the pipe body is a three-layer composite structure, and the pipe wall is sequentially provided with a wear-resistant layer, an intermediate layer and a protective outer layer from inside to outside; the pipe wall is uniformly distributed with a honeycomb hollow structure, and an axially extending track is fixedly arranged on the inner wall of the pipe body; the three-layer composite structure composed of the wear-resistant layer, the intermediate layer and the protective outer layer from inside to outside is combined with the honeycomb hollow design, the overall weight is greatly reduced, the compression resistance, bending resistance and impact resistance are provided, and the rockfall, wear, corrosion and humid environment are effectively resisted; adjacent pipe bodies are connected through flanges through plug-in interfaces and adjacent tracks, modular rapid assembly is realized, the channel is air-tight, water-tight and the track has high straightness, and the construction efficiency is high.

The present application relates to a kind of preparation methods of niobium tube target material, belong to the preparation technical field of tubular target material for magnetron sputtering, the present application uses niobium powder as raw material, designs special cold isostatic pressing tooling, successively after granularity control proportioning and mechanical uniform mixing, cold isostatic pressing structure assembly, powder filling and cold isostatic pressing, cold isostatic pressing compact machining, hot isostatic pressing structure assembly, vacuum hot degassing of sheath, sheath hot isostatic pressing and machining process preparation niobium tube target material, the niobium tube target material prepared by the present application has the characteristics of high density, uniform structure, small radial thickness deviation, good straightness, controllable length-diameter ratio, and integral binding with back tube forming, etc., coating film applicability is wide, test shows that its relative density is ≥99%, oxygen content is ≤2500ppm, structure is uniform, radial thickness deviation is ≤0.3mm, straightness is ≤1mm, length-diameter ratio is controllable in the range of 8:1~20:1.

The utility model discloses a cable mounting rack for building engineering construction belongs to building construction technical field, including bottom plate, be provided with the rest seat between two vertical rods, and the recess that is arranged along the vertical rod height direction is opened in the vertical rod, and the both ends of rest seat all are fixed with the convex board b of recess sliding adaptation, and the bottom of rest seat is provided with adjustment assembly, and the inside of rest seat is opened with U -shaped groove, and the top of U -shaped groove is provided with the pressure limit component that opens and sets up at the top of U -shaped groove, the utility model discloses through directly pressing pressure limit component, and the opening end of U -shaped groove is closed through pressure limit component, thereby through pressure limit component and hold in the cable of U -shaped groove inside clamping limit, and the operation of installing multiple screws is saved to fix, and the height position of rest seat is adjusted through adjustment assembly, thereby the support height of cable is adjusted, to adapt the uneven ground and lay cable, make after paving the cable have good straightness, and convenient installation lay.

This invention discloses an embedded metal-based ceramic membrane and its preparation method. The membrane uses a continuous metal matrix as its main framework. During solid-state sintering, the metal particles undergo plastic deformation at their contact points, forming sintering necks. The ceramic powder is in a discontinuous, discrete state. After being uniformly dispersed by powder adsorption and cold isostatic pressing, it is embedded and locked within the gaps in the metal framework. This product has a metal membrane structure as its main component, offering high filtration accuracy and uniform distribution. The outer surface of the membrane has a continuous, smooth, and clean metal phase that can be directly welded. It exhibits low sintering shrinkage, good dimensional stability, excellent intrinsic hydrophilicity, and superior fluid permeability. The preparation process is simple and controllable.

This utility model discloses a wedge-shaped microwave absorbing material structure, including a wedge and a base. The wedge has a shell-like structure on both sides and a wedge-shaped main body. The lower end of the wedge has mounting feet. The base has weight-reducing holes, and the four corners of the weight-reducing holes are designed with symmetrical conical grooves corresponding to the mounting feet. The wedge and the base are connected by the mounting feet, forming a closed space after the wedge is installed on the base. This utility model features a separate design for the base and the wedge, allowing the base to accommodate wedges of different heights, resulting in low cost and easy replacement. The I-shaped groove design of the base ensures flexible, secure, and non-sagging insertion of the wedge. The flanged base design prevents the shielding body from being exposed during installation. The wedge-shaped microwave absorbing material has the advantages of lightweight structure, good mechanical properties, and no magnetic leakage between the gaps in the absorbing material.

The present application relates to the technical field of silicon core pipe extrusion cooling, in particular to a HDPE silicon core pipe extrusion cooling device, which comprises a rack, a cooling runner for shaping the silicon core pipe is arranged on the rack, and a limiting mechanism for limiting the silicon core pipe is arranged on the cooling runner at equal intervals along the left-right direction, the height of each hard pipe is accurately adjusted by the control assembly, so that the high-temperature soft silicon core pipe passing through the cooling runner is applied with a shaping force by the limiting roller, the force effectively reduces the continuous floating lifting effect of the cooling water on the silicon core pipe, the limiting roller is driven to move radially by the driving assembly, the inner concave arc surfaces of the plurality of limiting rollers are combined to form an enveloping type constraint on the outer wall of the silicon core pipe, effective radial constraint and shaping of the silicon core pipe are realized, the cross-sectional roundness of the silicon core pipe is ensured, the mechanical structure on the pipe wall is maximally reduced, and the cooling uniformity of the silicon core pipe is ensured.