16results about How to "Good size consistency" patented technology

The invention discloses a polyhydroxyalkanoate composition and a preparation method thereof. The polyhydroxyalkanoate composition comprises the following components in parts by mass: 100 parts of polyhydroxyalkanoate; 0.5 to 5 parts of unsaturated D-polylactic acid; 0.5 to 5 parts of poly (L-lactic acid); the preparation method comprises the following steps: S1, carrying out melt blending on the polyhydroxyalkanoate and the unsaturated D-polylactic acid, and enabling the polyhydroxyalkanoate and the unsaturated D-polylactic acid to fully react, so as to obtain an intermediate product; and S2, carrying out melt blending on the intermediate product obtained in the step S1, poly-L-lactic acid and an ester exchange inhibitor to finally obtain the polyhydroxyalkanoate composition with excellent thermal stability, high melt strength and high crystallization speed.

The application provides a method and a die for realizing heading forming of a fastener head structure, and comprises the following steps: adopting the die to perform one-time heading on the fastener head structure to obtain a rough heading head type; and adopting the die to perform two-time heading on the rough heading head type to obtain a fine heading head type.The application has the beneficial effects that: the product size consistency is good; the new forming method is adopted, the product head type is replaced by heading instead of turning, the influences of unstable clamping, tool wear and unstable personnel operation during turning are avoided, the product processing process is stable, and the size consistency is good; the material utilization rate is high; the product head type is replaced by heading instead of turning, the head type size is directly formed by heading, the original turning head type condition is avoided, and the material utilization rate is improved from less than 80% to 100%.

The utility model discloses an automatic wire winding chamfer frock, including base, stamping power component, tool and stop piece, the installation end fixed mounting of stamping power component is in the rear end of base, and the movable end of stamping power component is hinged with the top of tool, and the front end fixed mounting of stop piece is in base, stop piece is provided with first slot body and second slot body, and first slot body vertically penetrates the top and bottom of stop piece, and second slot body horizontally penetrates the front side of stop piece, and the rear end of first slot body and second slot body intercommunication, first slot body and tool sliding connection, and second slot body is used for placing work piece horizontally. Place work piece in the second slot body, then start stamping power component, and stamping power component drives tool to slide down in first slot body, makes tool downwardly press work piece in stop piece, thereby completes the chamfer processing procedure of work piece, solved the problem of traditional manual chamfer processing, and the quality is unstable.

The present application relates to the technical fields of new fuel auxiliary equipment, in particular to a kind of new fuel storage container internal partition plate welding auxiliary device;Technical scheme: a kind of new fuel storage container internal partition plate welding auxiliary device, including electric push cylinder, base frame assembly, connecting plate assembly, traction assembly and support assembly, electric push cylinder is installed on base frame assembly, connecting plate assembly is connected with the push rod end of electric push cylinder, traction assembly includes steel wire rope main body and screw thread tightener;The support plate between the tank body and the partition plate is embedded in the present application, the accurate positioning of the partition plate is realized and the continuous support is provided during welding process, effectively inhibits welding deformation, simultaneously by electric push cylinder pulling support plate synchronous movement, realize micro straightening, significantly improve welding quality and size consistency.

The application discloses a torsional spring end cutting device, relates to the torsional spring production and processing technical field, and solves the problem that the existing cutting mode cannot achieve the problem of flat end cutting of the torsional spring. The device comprises a mounting plate, a fixing seat arranged on the mounting plate, the mounting plate being horizontally movable, at least one limiting unit, the limiting unit comprising two symmetrically arranged limiting blocks, a first positioning block arranged between the two limiting blocks, at least one positioning mechanism, at least one pressing mechanism, at least one cutting machine, and a feeding driving mechanism driving connected with the mounting plate and used for controlling the torsional spring on the limiting unit to approach or move away from the cutting machine. The device can accurately and quickly position the torsional spring in terms of the placing angle and the front and back positions, the end of the cut torsional spring is smooth and free of burrs, the customer demand is met, and the size consistency of each cut torsional spring is good due to the accurate positioning of the spring during cutting.

The utility model relates to the technical field of electric vehicles, in particular to a controller and an electric vehicle. The controller comprises a heat dissipation shell, an aluminum substrate and a power terminal. The heat dissipation shell is provided with a containing cavity and is a stretched aluminum part. The aluminum substrate is arranged in the accommodating cavity; the number of the power terminals is two, the two power terminals are distributed at intervals in the first direction, each power terminal comprises a base and a conductive part, the base is arranged on the aluminum substrate, one end of the conductive part is connected to the aluminum substrate through a first fastener, and the other end of the conductive part is arranged on the base. By adopting the combined structure of the stretching aluminum piece, the aluminum substrate and the power terminal, the cost can be effectively reduced.

The utility model discloses cylindrical mirror drawing equipment, relates to a manufacturing technology of optical glass products, and in particular relates to drawing equipment for continuously producing high-precision cylindrical mirrors. Comprising a rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4), a cutting unit (5), a vertical tower (6), a gas control unit (7), an electrical control unit (8) and a master control operation station (9). A rod feeding unit (1), a heating unit (2), a diameter measuring unit (3), a traction unit (4) and a cutting unit (5) are sequentially arranged on the front face of a vertical tower (6) from top to bottom, a gas control unit (7) and an electrical control unit (8) are arranged on the side face of the vertical tower (6), and a master control operation station (9) is arranged beside the vertical tower (6). By optimizing process parameters of heating, stretching, cooling and the like, efficient and continuous production of the cylindrical mirror is realized, and the cylindrical mirror production device has the characteristics of high production efficiency, low cost and good size consistency.

The utility model discloses a tour guide chair punching template, and belongs to the technical field of auxiliary mounting and positioning equipment for vehicle interiors. The device comprises a first flat plate which is vertically arranged; a plurality of positioning holes for punching are formed in the first flat plate; a second flat plate flush with the first flat plate is arranged on one of the left end side and the right end side of the first flat plate. A positioning clamping plate is arranged at the lower part of the second flat plate; the positioning clamping plate is of an L-shaped plate structure; the two adjacent end faces of the positioning clamping plate are attached to the top face and the side face of the step respectively, and the positioning clamping plate can be clamped at the corner position of the step. According to the utility model, the problems of positioning deviation, low efficiency, damage to the appearance of a tour guide chair and certain potential safety hazards caused by the use of a traditional punching mode when punching is carried out on the step position in the carriage at present are effectively solved.

This invention relates to the field of battery technology, disclosing an electrode post, a battery cell, and a battery pack. The electrode post includes an electrode post base plate and an electrode post body. The electrode post body includes a first segment connected to the electrode post base plate and a second segment connected to the first segment. The sidewalls of both the first and second segments are designed as inclined walls for easy demolding. The angle between the sidewall of the first segment and the electrode post base plate is a first demolding angle, which is 90°–θ1, satisfying: 0.1°≤θ1≤2°. The angle between the sidewall of the second segment and the electrode post base plate is a second demolding angle, which is 90°–θ2, satisfying: 0.1°≤θ2≤2°. This invention optimizes the structural design of the electrode post body by providing demolding angles on the sidewalls of both the first and second segments, allowing the electrode post to be more smoothly ejected from the mold after pressing, thereby significantly improving production efficiency, enhancing product dimensional consistency, and improving the overall performance of the electrode post.

The present application relates to a kind of small dot spacing interactive module, including multiple small dot spacing LED display module, each small dot spacing LED display module includes display component, capacitor component, COT component, display component includes display piece and inductive controller, inductive controller is installed on display piece;Display piece includes LED lamp plate and multiple LED lamp beads arranged in matrix, multiple LED lamp beads are divided into multiple display regions, capacitor component includes multiple inductive capacitor plate and multiple electrical connectors, each inductive capacitor plate is equipped with curve type inductive coil, each curve type inductive coil corresponds inductive capacitor plate and is as a capacitive touch unit, COT component includes multiple insulating pieces and COT membrane plate, the insulating piece is located between the inductive capacitor plate and the LED lamp plate, each electrical connector is connected curve type inductive coil and connects inductive controller, COT membrane plate seals display component surface and the outermost surface of display component to assemble complete small dot spacing LED display module.

The application provides a pipe structure, which comprises a main body part, a side wall part of the main body part is provided with at least one through hole part, a center line of the through hole part does not intersect with a center line of the main body part, the through hole part comprises a through hole, and the through hole part comprises an extension part which is formed by processing the through hole of the side wall part by a hot melt drill; the extension part extends from the side wall part to both sides of the side wall part, so that the processing convenience and the processing efficiency of the through hole part can be relatively improved.

The invention discloses a pipe end forming multi-step stress release method and system, particularly relates to the technical field of metal pipe non-cutting machining, and aims to solve the problems of unbalanced material internal stress release and unstable forming quality and consistency caused by extensive planning of a multi-step forming process in the prior art. Whether a preset forming path meets a stress relaxation condition or not is judged by obtaining a pipe material and geometric parameters, when the condition is met, residual stress field distribution characteristics of each step are obtained through simulation, the difference degree between the steps is calculated, and mode transfer characteristics of stress redistribution are identified according to evolution of the difference degree to evaluate the damage risk level. When the risk level is high, measuring an energy conversion efficiency parameter of the path in the verification stage, and adjusting process parameters of subsequent steps of the path in combination with the risk level and the efficiency parameter to generate and execute an optimized forming path; scientific evaluation and dynamic optimization of the forming process are achieved, orderly and sufficient release of stress is promoted, and the forming precision is improved.

A method for forming a folded edge of a component includes providing a first blank and a second blank. The method further includes applying an adhesive to the top surface of the first blank with an adhesive dispenser. The method further includes positioning a second blank over the first blank, where a lower surface of the second blank is positioned over a top surface of the first blank such that an adhesive is applied between the lower surface of the second blank and the top surface of the first blank. The method further includes folding the first edge of the first blank over the second blank such that a portion of the top surface of the first blank overlies the upper surface of the second blank. A dispensing end portion of the adhesive dispenser defines an opening that is wider in the width direction than in the height direction.

The application provides a manufacturing method of a hemi-aluminum spherical shell, which comprises the following steps: firstly, a hemi-core shaft ball is obtained through super-precision turning, so as to ensure the size precision and roughness of the outer spherical surface; secondly, a special fixture is manufactured through precise turning, milling and super-precision turning; then, the hemi-core shaft ball is assembled on the conical surface of the special fixture through negative pressure adsorption and adhesive fixation; the hemi-aluminum spherical shell is obtained through super-precision turning; and finally, the inner and outer stoppers are processed and assembled to form a complete spherical shell to load specific substances. The manufacturing method of the hemi-aluminum spherical shell can obtain a high-precision hemi-aluminum spherical shell, which has better size precision consistency and higher wall thickness uniformity than the hemi-aluminum spherical shell manufactured by using a traditional mold, and the wall thickness uniformity of the hemi-aluminum spherical shell is better than 3 mu m, so that the yield can be improved and the cost can be reduced.

The utility model discloses a split riveting forming's counter lock knob axle, including knob outer cover, knob inner cover and lock axle, knob outer cover and knob inner cover mutually lock together and form the rotation -proof limit position cooperation, and knob inner cover is equipped with riveting hole, and lock axle is equipped with riveting post, and both pass through cold riveting and fix. Lock axle is by metal sheet material through continuous stamping, cutting, stamping and coiling procedure integral forming, and the outer circumference is equipped with dovetail groove and annular groove, and the end is equipped with the metal cover plate with recess. Knob inner cover is equipped with the boss of stamping and forming on, knob outer cover, knob inner cover are all metal sheet material through stamping, deep -drawing and forming's hollow cylinder structure, and the circumference surface of knob outer cover is equipped with antiskid groove or upper end is equipped with smooth flat operation part. The utility model discloses adopt continuous stamping to replace traditional aluminum die casting, and material utilization is high, and production efficiency is high, and riveting connection firm, transmission stable, is applicable to various handle locks, anti -theft lock, house door lock and so on mechanical lock, and the comprehensive cost and reliability are obviously superior to die casting product.

This invention relates to the field of robotics and prosthetics, specifically to a latex bionic joint capsule for robots and prostheses and its preparation method. The latex bionic joint capsule is an integrally molded elastic capsule made of natural latex through impregnation molding and long-term baking curing. It has an internal hollow encapsulation cavity that matches the outer contour of the structural components on both sides of the metatarsophalangeal joint. Utilizing the elastic deformation capability of natural latex, it forms an interference fit with the structural components on both sides with an interference amount of 1% to 5%, achieving elastic encapsulation and connection. During preparation, a solid aluminum alloy mold with a corresponding outer contour and a size 1.1 times that of the target finished product is used. The latex liquid formula, impregnation parameters, and curing at 70-90℃ for 4-8 hours are controlled. The wall thickness can be adjusted by the number of impregnation cycles. This invention combines good elasticity, fit, and anti-detachment ability. The process is simple, the molding consistency is good, and it can be adapted to flexible joint structures at the front end of the foot of robots and prostheses with different load levels.