60results about How to "Shorten the design and production cycle" patented technology

The invention discloses a stretch-bending forming die and a forming method, including a basic body (5), a cushion layer (4), a connecting bolt (7) and two clamp blocks (6). The end surface of one end of the basic body (5) is an arc working surface (10), with a through-hole (11) which is matched with the connecting bolt (7) in the middle. One clamp block, a plurality of basic bodies and another clamp block are sequentially arranged on the connecting bolt (7) in series and tightly clamped and fixed, thereby integrating a die; by adjusting the position (11) where the connecting bolt passes through a through groove on each basic body, the position of the working surface (10) of each basic body is adjusted; and by fixing the die onto the working table of a stretch bender by a mounting hole (9), the stretch-bending forming is carried out to a workpiece (2) to be formed. In the forming process, by slightly adjusting the position of the basic body (5), the shape of the external surface of the die is changed so as to compensate the rebounding effect on the forming accuracy and adapt to the rebounding control needs of different stretch-bending parts; and the invention is characterized by simple structure, convenient use, high production efficiency and low cost.

The invention relates to a flexible welding jig device for an automotive body. The welding jig device is characterized in that a guide shaft is fixed on a seat of an X-directional adjustable seat component and a locating pin hole is opened on the seat; a slide seat of a Y-directional adjustable slide seat component is sleeved on the guide shaft of the X-directional adjustable seat component and connected with the seat through a lock bolt; a supporting seat of a Z-directional adjustable supporting seat component is sleeved on the guide shaft of the Y-directional adjustable slide seat component and connected with the slide seat through a lock bolt; a graduation fluted disc is arranged in a swing locating mechanism of a swing mounting seat component and meshed with a graduation locating block arranged in the supporting seat, resetting and locking are achieved through a spring and a screw, and a slide shaft is arranged in a clamping slide bushing in the Z-directional adjustable supporting seat component and connected through a locking screw on the side; a rectangular hole system with an interval of 100mm is arranged on a hole system seat board, and a flexible and adjustable support is connected with the seat board in a locating mode through the hole system. The flexible welding jig device has the advantages of being reliable in structural design, convenient to weld, operate and adjust, high in adaptability, and capable of greatly shortening the design and production period of the welding jig of the automotive body and effectively reducing equipment cost for welding technique of the automotive body.

The invention relates to the technical field of automobile manufacturing equipment, in particular to a modular design method and a modular design structure of a welding fixture for trial-manufacture sample vehicles, which solve the problems of incapability of recycling, long design and manufacturing period and high manufacturing cost of sample vehicle trial-manufacture fixture parts of automobiles in the prior art. The welding fixture comprises a base and a fixture unit arranged on the base; structural members with the same functions in the welding fixture for the trial-manufacture sample vehicles are formulated into standard or standard series parts in the process of design and development to form a fixture module series, so that the standard or standard series parts are recycled in the development of the welding fixture for new type trial-manufacture sample vehicles and the welding fixture for small-lot vehicles, and non-standard parts in the fixture are subjected to structural design; and the standard parts and the non-standard parts in the welding fixture for the trial-manufacture sample vehicles are matched to form novel and complete welding fixture equipment for the trial-manufacture sample vehicles. Through the modular design method and the modular design structure, the aims of shortening the design and manufacturing period, recycling general and standard parts and reducing manufacturing cost are fulfilled.

The invention belongs to the field of bearing tests for large structural parts made of metal or non-metal materials, and particularly relates to a method for obtaining the properties of a corresponding metal part with an original size according to the properties of a scaled-down non-metal part which is machined and manufactured by using a 3D printing technique. According to the method, basic parameters of the physical and mechanical properties of the scaled-down non-metal part based on 3D printing are tested, and the load bearing state of the scaled-down non-metal part is calculated by adopting a finite element analysis method, so as to deduce the load bearing state of the metal part with the original size. The method has the characteristic and the beneficial effects that the bearing capability of the corresponding metal part can be quickly deduced at low cost within short time according to the scaled-down non-metal part which is machined and manufactured by using the 3D printing technique, thereby effectively shortening the design and manufacturing cycle of product parts and increasing the design success rate.

The invention discloses a metal shell cast bus and a method for manufacturing the metal shell cast bus. The metal shell cast bus comprises a plurality of standard unit sections and a connecting assembly. Each standard unit section comprises an inner conductor, a metal shell and a middle insulation layer. The connecting assembly comprises an inner connecting assembly body, an outer connecting assembly body and a middle connecting insulation layer. In addition, the invention further discloses the method for manufacturing the metal shell cast bus. According to the technical scheme, assembling of the metal shell cast bus is made to be more convenient, the design and production period is greatly shortened, and the cost is saved. Moreover, the outer connecting assembly body in the connecting assembly serves as a die and can also bear mechanical stress, demolding is not needed during insulation material casting, the metal shell cast bus can be grounded in use, and operation is safer and more reliable.

The invention discloses a method for quickly forecasting cooling time in injection molding of plastics, which is used for forecasting the required cooling time through known parameters of plastics and molds and the like. The concrete implementation scheme of the method comprises the following steps: (1) analyzing primary influence factors of the cooling time; (2) designing a training sample of a neural network; (3) designing and training a BP neural network; (4) establishing a quickly forecasting model of the cooling time; and (5) verifying the superiority of the model through embodiments. The invention can be used for quickly and accurately forecasting the cooling time in injection molding of plastics, and has important functions of shortening the designing and manufacturing cycle of molds and improving the manufacturing accuracy and performance of molds.

The invention provides a method for displaying a clock structure and timing sequence correlation. The method comprises the following steps that an required information file recording a clock structure graph is read, and the clock structure graph encapsulated by an abstraction module is opened. Timing sequence correlation analysis is conducted on the module, and the analysis result is displayed in a graphics window. By means of the method for displaying the clock structure and the timing sequence correlation, the structure of a complicated clock system can be clearly displayed, the timing sequence correlation between synchronization units is effectively analyzed, a clock tree synthesis tool is assisted so as to improve the synthesis quality, accordingly the design and manufacturing period of a chip is shortened, and the design efficiency is improved.

The invention discloses an additive manufacturing protective device and a using method thereof. The device comprises a protective cover, an inner environment regulating unit which is communicated with the inner space of the protective cover, and a dust flue gas treatment unit, wherein the inner space environment regulating unit is used for replacing gas inside the protective cover, so that the environment inside the protective cover is protective atmosphere in a printing process; the dust flue gas treatment unit is used for discharging waste gas generated in the printing process; the protective cover is matched with a working platform for sealing a formed part between the protective cover and the working platform, so that the space of the protective device is reduced, and all spaces of the protective device are effective spaces. The device covers an effective working area, reduces replacement time and amount for working environment air in comparison with a mode that a conventional whole working device is placed in the effective working area, and effectively saves time and reduces operation cost; and the protective device is arranged on the working platform for use, so that movement is convenient.

The invention relates to a method for calculating engagement noises of a spiral bevel gear pair. The calculating method comprises the followings steps: taking a tooth of the spiral bevel gear pair as a spring, and taking a gear body as a mass vibration system; setting a mounting system in a rigid non-vibration state except the environment noises; selecting a reference point according to a given load and noise value, confirming the noise value, the load, the transmission ratio of the spiral bevel gear pair and the pitch circle speed of a driving wheel according to the design requirement of a finished vehicle, and calculating the relative sliding ratio and the superposition degree; calculating the vibration speed coefficient of a spiral bevel gear and the amplitude of vibration of the spiral bevel gear pair, converting a helical angle, calculating the engagement noises of the spiral bevel gear pair, and analyzing the result. The calculating method provided by the invention is simple, the calculation time is short, the error is small, and the accuracy is high; through the calculation and analysis, the structural parameters of the spiral bevel gear pair is optimized, and references are provided for selecting manufacturing process and accuracy reasonably and reducing the engagement noises; and the design efficiency is improved, the design and manufacturing cycle is shortened, and the manufacturing cost is lowered effectively.

The invention relates to a tunnel boring machine. The tunnel boring machine is suitable for excavating tunnels with the diameter being 6.8-7.9 m. The tunnel boring machine comprises a main driving mechanism for driving a cutterhead, a transmission mechanism, the cutterhead and a shield, wherein the main driving mechanism comprises a plurality of driving power source assemblies; the transmission mechanism is driven by the multiple driving power source assemblies; the cutterhead is connected with the transmission mechanism; the shield surrounds the main driving mechanism in the circumferential direction; and the dimension of a shell of the shield can be changed so that the shell of the shield can adapt to the diameter of a tunnel to be excavated. When the diameter of the tunnel to be excavated is 6.8-7.9 m, only part of structures of the tunnel boring machine need to be changed, overall modification is not needed, in this way, universality of main parts and components can be achieved, the design and manufacturing cycle is greatly shortened, and production cost is greatly reduced.

The invention relates to the field of external accessories of aviation and aerospace equipment, and discloses a method for quickly designing an elbow structure in an aero-engine external pipeline system, for completing the lightweight design of the elbow structure in the external pipeline system, reducing the vibration fault of the elbow structure and improving the vibration resistance of the elbow structure. According to the method, in the initial design stage of the elbow structure in an external pipeline system of aviation and aerospace equipment, the vibration condition of the elbow structure is estimated through the elbow structure rapid design method, and the technical variable parameters of the elbow structure are optimized according to the estimation result, and rapid design of theelbow structure is completed. Due to the method, the design cost can be reduced, and the development period is shortened, and the installation and arrangement success rate of the elbow structure in an external pipeline system is increased.

The invention provides a design and verification method of a winding coil of a magnetic suspension linear motor which can effectively solve the problem of long design and manufacturing cycle and highcost of the magnetic suspension linear motor caused by the existing design verification method. The method includes obtaining theoretical design values of a primary stator core and the winding coil according to the design speed of a maglev train and the design principle of the linear motor, comparing whether the linear distance b of the thickness a of the oblique portion of the isosceles trianglestructure at the end of the winding coil occupied on the length direction of the stator core is more than the sum of the stator slot width d1 of the stator core and the stator tooth portion width d2;determining whether the projection distance of the oblique portion of the isosceles triangle structure at the end of the winding coil in the width direction of the stator core is out of limit; whetherthe height h is out of limit after the whole isosceles triangle structure at the end of the winding coil is bent upward.

The invention relates to the technical field of automotive part processing, in particular to a copying fixing tooling for automotive parts. The copying fixing tooling for the automotive parts comprises a plurality of needle bars and a fixing tooling body; the needle bars are arranged on the fixing tooling body; the height of the end part of each needle bar is adjusted by lengthening and shortening the corresponding needle bar; end parts of the needle bars form profiles matched with automotive bodies or interior and exterior decoration parts. Compared with the prior art, the copying fixing tooling disclosed by the invention has the characteristics that the telescoping needle bars are adopted to be matched with the profiles of the automotive bodies or interior and exterior decoration part products for different automotive types, the profiles are fixed through a support positioning mechanism, and the needle bars are adjusted in height and are fixed by a height adjustment and fixing device; the same copying fixing tooling disclosed by the invention can be repeatedly used by same-type products for different automotive types, therefore the design and manufacturing cycle of the tooling is shortened, the cost is reduced, the development cycle and the development cost of the automotive bodies or the interior and exterior decoration parts are respectively shortened and reduced, and the efficiency is improved; the copying fixing tooling disclosed by the invention can be applied to development of various automotive bodies or the interior and exterior decoration part products.

The invention discloses a CubeSat framework based on 3D printing, which comprises a side frame and a connecting screw rod, and further comprises fixing tables and a solar cell panel, four fixing tables are connected in the side frame, the surfaces of the fixing tables are connected with the connecting screw rod, the outer surface of the connecting screw rod is sleeved with a circuit board. A large circular hole and a small circular hole are formed in the outer surface of the side frame, and a power switch is arranged on the inner side wall of the side frame. According to the CubeSat framework based on 3D printing, the selective laser melting metal 3D printing technology is adopted, the structural strength of the CubeSat framework reaches up to 500 MPa, the weight of the CubeSat framework is half of that of a traditional method, the design and manufacturing period is shortened, and on the basis that an original CubeSat framework loads different functional loads, the strict requirement of a spacecraft for the load quality can be better met.