121results about How to "Reduce punching force" patented technology

The invention provides a hot stamping and warm blanking composite forming technology and mould for ultrahigh-strength steel. By means of the composite mould, blanking is composited in a hot stamping process, and trimming and punching are performed on sheet metal at a temperature higher than a martensite formation temperature. The hot stamping and warm blanking composite forming technology comprises the following processes of putting the sheet metal of the ultrahigh-strength steel heated to achieve complete austenitizing into the composite mould, performing stamping forming and then performing cooling and quenching; heating sheet metal needing blanking locally, keeping a warm state, performing warm blanking after completion of forming, and performing cooling further in a pressure maintaining mode. The hot stamping and warm blanking composite forming technology and mould for ultrahigh-strength steel effectively solves the problems of poor quality, low precision, high cost and long period of holes trimmed and punched in the later period of the ultrahigh-strength steel and has great practical significance in production practice.

The invention relates to a micro-blanking forming device and a forming method, in particular to a high-frequency auxiliary micro-blanking forming device and a method for a foil plate. The device and the method aim at solving the problems in the existing high-precision blanking forming of the foil plate that an interval between a female die and a male die is small, a blanking force is significantly increased by a size effect, and the dies are badly worn and have short service lives. The device comprises a female die fixing plate, a lower bolster and a lower die plate that are sequentially connected from the top down, wherein an upper die plate and a male die fixing plate are sequentially arranged above the female die fixing plate; a female die is embedded into the middle part of the upper surface of the female die fixing plate; a vibration component and a punch are sequentially mounted in the male die fixing plate from the top down in an inserting manner; a middle line of the punch is coincided with that of the female die; the vibration component is connected with a high-frequency power source; a guide sleeve is mounted on the upper surface of the female die fixing plate in an inserting manner; the upper end of a guide column is mounted in the male die fixing plate in an inserting manner; and the lower end of the guide column is mounted in the guide sleeve in an inserting manner. The device and the method are used for blanking forming of the foil plate.

The invention relates to a phase change material (PCM) cast-in-place reinforced concrete large-size sandwiched floor and a construction method thereof. Concealed beams are arranged in the sandwiched floor at intervals; the sandwiched floor consists of a core die, upper steel bars, lower steel bars and outer-packed concrete; and the core die is a solid polystyrene block, the upper steel bars are bound on the top of the core die, the lower steel bars are bound on the bottom surface of the die core, and the steel bars and the core die are wrapped into a whole through the outer-packed concrete. An inner die floats upwards in the pouring process, and the lower steel bars and the upper steel bars are bound with the keel of a bottom template through anti-floating steel wires. The sandwiched floor has the advantages of light dead weight, good anti-seismic and sound insulation effects, no limit on embedded pipelines in the construction process and the like. The sandwiched floor can be widely applied to multi-layer and high-layer buildings with larger spans and loads and thicker floors.

The invention discloses punching equipment capable of preventing elements from being easily damaged. The punching equipment structurally comprises a handle, a debugging wheel, a fixing block, a protection shell, a bolt, a machining head, a base, a power supply connection port, a panel, a displayer, a button, a debugging button, an indicating lamp and a damping device; the debugging button is arranged on the left side of the panel, the debugging button is arranged on the left side of the displayer, and the base is welded to the damping device; the damping device comprises a first connecting block, a central spring, an inner spring, a second connecting block, a first spring, a gear strip, a gear and a second spring. The punching equipment capable of preventing the elements from being easilydamaged is structurally provided with the damping device, and the central spring and the inner spring are arranged at the middle section of the first connecting block and the middle section of the second connecting block, so that the working pressure of the equipment is reduced; the first spring is installed on the gear strip, the second spring is extruded when the gear and the gear strip move downwards, remaining impact force is reduced, and the elements in the base are protected.

The invention relates to a combined type precision sheet metal stamping and riveting mould, belonging to the field of pressed deformation connection and mould in mechanical engineering. The combined type precision sheet metal stamping and riveting mould comprises a guide device which comprises a postposed guide pillar and a guide sleeve, a precise upper mould and a precision lower mould to realize the precise stamping and riveting process so as to improve the loading and unloading efficiency of the sheet metal in the mould. The combined type precision sheet metal stamping and riveting mould can overcome the quality defects that riveting joints are asymmetric, riveting gaps appear in the riveting process, and that the riveting joints are easy to pull off and realizes a single-gate shearing-free stamping and riveting process; riveting joints with high strength, high rigidity, rotational symmetry and even stress can be formed; and the self-locking ability of the riveting joints is improved. The height increase of the riveting joint at the concave mould is small and the riveting joint at the concave mould is more attractive. The stamping force required by the convex mould is relatively small, so the combined type precision sheet metal stamping and riveting mould is suitable for a general punch press. The combined type precision sheet metal stamping and riveting mould is simple in structure and convenient to operate, saves installing and debugging man-hour, improves the labor productivity and thereby increases the economic benefit.

[Problem] To propose a method for manufacturing steel pipe by implementing a bending process on sheet material, and a press mold used in said method. [Solution] Provided is a method for manufacturing steel pipe that forms a molding (S1), which has a U-shaped cross-section, from a sheet material having an end bent part, forms an open pipe (S2) by applying bending force to the molding, and then butt joins the end surfaces of a gap part of the open pipe (S2) so as to form steel pipe, wherein: at the stage of carrying out the bending process, a lightly worked part to which a much smaller curvature than the other areas is imparted, or an unprocessed part (P), which is not bent, is provided on at least part of the sheet material; and at the stage of pressing down on the molding and forming the open pipe (S2), bending force is applied to sites separated at least W/4 (where W is the width dimension of the sheet material) in the direction of width end parts from the middle of the lightly worked part or unprocessed part (P) without restricting the lightly worked part or the unprocessed part (B). Thus, it is possible to efficiently form steel pipe with a high degree of roundness with comparatively little bending force.

The invention discloses an automatic grinding device for a die punch arc. The automatic grinding device comprises a screw lifting pair, a radius adjusting disc, a swing rod, a drive motor, a drive rod a, a drive rod b, a grinding head motor installing plate, an installing plate freedom degree limiting mechanism, a grinding head motor and a bowl-shaped grinding wheel. The drive motor drives the swing rod to drive the radius adjusting disc to swing, and therefore the installing plate and the grinding head motor on the installing plate are driven to do same-radius arc track swinging. The device is low in cost, reasonable in structure, convenient to use, practical and suitable for grinding the punch die blanking force reduction arc.

The invention discloses a metal plate pressure tank bending die which comprises an upper die plate, a lower die plate, a guide post device, a male die, a female die component and projecting strips. The upper die plate is connected with the lower die plate through the guide post device, the male die is arranged below the upper die plate, the female die component is arranged on the lower die plate and comprises two female die blocks, a bottom plate and positioning blocks, the bottom plate is arranged between the two female die blocks, the height of each female die block is larger than that of the bottom plate, the positioning blocks are arranged on the female die blocks, the projecting strips are arranged on the lower surface of the male die close to two ends of the female die blocks, and connecting angles of the inner slide faces and the upper surfaces of the female die blocks are circular angles. The metal plate pressure tank bending die is fine in punching effect, high in punching efficiency and suitable for batch punching and does not easily rebound, and punching quality is improved.

The invention discloses a stamping device for new energy automobile brake disc production and an application method of the stamping device, and relates to the technical field of new energy automobiles. The stamping device aims to solve the problem that existing stamping equipment cannot repair an element needing to be stamped after stamping is solved. The stamping device specifically comprises a supporting bottom plate, a third supporting plate is in bolted connection to the outer wall of one end of the top of the supporting bottom plate, and first supporting plates are in bolted connection tothe outer walls of the two sides of one end of the third supporting plate. According to the stamping device for new energy automobile brake disc production and the application method of the stampingdevice, first electric guide rails and a protective plate are arranged at one ends of the first supporting plates, the protective plate can be driven by first electric sliding blocks to move up and down, then the stamping position of the bottom of the device is protected by the protective plate, a stamping part is prevented from bursting out accidentally, or outside workers or parts are preventedfrom stretching into the stamping position, and the use safety of the device is improved.

The invention discloses a metal plate stamping die which comprises an upper die plate, a lower die plate, guide column devices, a male die and a female die assembly. The upper die plate is connected with the lower die plate by the guide column devices; the male die is arranged on the lower side of the upper die plate; the female die assembly is arranged on the lower die plate; the female die assembly comprises two female die blocks, a bottom plate and positioning blocks; the bottom plate is arranged between the two female die blocks; each female die block is higher than the bottom plate; each positioning block is arranged on the corresponding female die block; joint corners of two side surfaces and the lower surface of the male die are rounded corners; joint corners of the inner side surfaces and the upper surfaces of the female die blocks are rounded corners. The metal plate stamping die has the advantages that good stamping effects can be realized, the stamping quality can be improved, and the metal plate stamping die is high in stamping efficiency and suitable for stamping metal plates on a large scale.

The invention discloses a rear anti-collision device for an automobile comprising a plastic cushioning backing plate, a connecting plate and a cushioning plate, wherein the connecting plate is fixedly connected to the rear of the automobile by fastening screws; the outer surface of the connecting plate is fixedly provided with the plastic cushioning backing plate; the cushioning plate is in an elastic connection with fixing plates by buffer spring seats; the fixing plates are fastened and connected with the plastic cushioning backing plate by the fastening screws; an anti-collision airbag body is fixed on the inner end of the plastic cushioning backing plate; and a protective airbag is fixedly arranged in the interior of the anti-collision airbag body. When the automobile is parked at night, fluorescent rings of the rear anti-collision device achieve the aim of giving warnings to passing vehicles and pedestrians. When a collision occurs, the plastic cushioning backing plate is in contact with the rear of the automobile in a large area. Under the action of the plastic cushioning backing plate, the impact pressure is effectively reduced to ensure that the automobile is not deformed. When the impact force is too large, the anti-collision airbag body will be triggered to eject the protective airbag and reduce the impact force between the two automobiles so as to ensure the safety of automobiles and drivers. In addition, the rear anti-collision device has a simple structure.

The invention discloses a scraper blade blanking die which comprises an upper die part and a lower die part that are connected through a guide sleeve and a guide pillar, wherein in the upper die part, an upper module is arranged on an upper template through an upper fixing plate and an upper backing plate, a die handle is arranged on the upper template, and mutually-vertical beveling cutters are arranged on the upper module; and in the lower die part, a lower module is arranged on a lower die base through a lower backing plate and a lower die fixing plate, and a pressing plate is arranged on the lower die fixing plate. According to the scraper blade blanking die provided by the invention, under the condition of ensuring that the processing size of a scraper blade accords with the design requirement, the labor production efficiency is greatly increased, the production cost consumption is saved, and the production period is shortened. A beveling blade is adopted in the upper module, the punching gap of the upper die part and the lower die part can be reduced, and the blanking surfaces of parts are smoother. The blanking force can be reduced, the vibration during the blanking of a thick plate is reduced so that the blanking process is more stable, and the quality of the scraper blade and the safety of the production are ensured.

The invention discloses a solid lubricating film for aluminum alloy sheet stamping forming and a preparation method thereof. The solid lubricating film is prepared from a lubricating property imparting agent A, an elastic organic coating material B as a lubricating imparting agent binder, and a wetting dispersant C used for improving the lubricating property imparting agent A, wherein the weight parts of the lubricating property imparting agent A, the elastic organic coating material B, and the wetting dispersant C are respectively 5 to 20 parts, 80 to 95 parts, and 0.2 to 2 parts. In addition, according to the preparation method of the solid lubricating film disclosed by the invention, a solid lubricating film component and a diluent are mechanically mixed according to a specific ratio toobtain a precursor fluid; the precursor fluid is sprayed or brushed on the surface of a material to be lubricated, and the solid lubricating film is formed at a specific temperature in a specific time. The lubricating film has excellent lubricity and easy removal; when stamping forming is performed, the lubricating film provides lubrication and protects the surfaces of a sheet and a mold, and theformed part has excellent surface quality.

The invention discloses a dissimilar metal rivet welding connecting device, and belongs to the field of mechanical manufacturing. The dissimilar metal rivet welding connecting device comprises an impact electrode arranged from top to bottom, a guide mechanism, a spring pressure block mechanism, and a guide plate; the guide mechanism has a hollow structure; the impact electrode is connected with a power supply positive pole; the impact electrode is arranged in the guide mechanism and can slide along the guide mechanism from top to bottom; the spring pressure block mechanism is mounted below an inner hole of the guide mechanism and used for supporting a rivet; the guide plate is connected with a power supply negative pole; and the surfaces of an impact guide rod, the guide mechanism and the spring pressure block mechanism are coated with insulating layer. By the dissimilar metal rivet welding connecting device, stamping force of a notch rivet penetrating through a material and the deformation of a joint can be effectively reduce, the rivet welding contact area between the rivet and dissimilar metal can be increased, the rivet welding stability of the dissimilar metal can be improved, cracks of the rivet can be avoided, mechanical properties of the material can be ensured, and the stability of the connection is enhanced. The invention also discloses a notch rivet and a rivet welding control method which are used for the dissimilar metal rivet welding connecting device.