86results about How to "Guaranteed bending accuracy" patented technology

The invention discloses a high-precision hydraulic plate bending machine and belongs to the technical field of machine tool manufacturing. The high-precision hydraulic plate bending machine comprises a frame, a slider assembly, a slider travel adjustment mechanism, a synchronous mechanism, and a rear stop mechanism. The middle of each of rear, main and front vertical plates of the frame is provided with a cylinder holding cavity which three compensating cylinders are mounted inside. The lower portion of a slider is connected with an upper die through a clamping component. The upper die is composed of twenty upper die segments. In the slider travel adjustment mechanism, a first worm and a second worm are driven through a transmission shaft so as to drive a first screw and a second screw to adjust up and down; two synchronous forks are fixedly connected to a synchronous shaft of the synchronous mechanism, and the moving ends of the synchronous forks are both connected with the slider through a fork joint bearing. The rear stop mechanism comprises a transmission system component and a slide carriage system component. The high-precision hydraulic plate bending machine has the advantages that precision of the machine bending work pieces is greatly improved and work efficiency of workers is also improved.

A method and apparatus for three-dimensionally bending a metal material are provided. A product intermittently having a bent portion which curves three-dimensionally and a quenched portion is manufactured by a bending method which performs bending downstream of a support means while feeding a metal material which is supported by the support means from an upstream side towards a downstream side. A portion of the metal material is heated by a heating means for the metal material downstream of the support means, a bending moment is imparted to the portion of the metal material which was heated by the heating means to carry out bending by three-dimensionally changing the position of a movable roller die which is disposed downstream of the heating means and has a plurality of rolls which feed the metal material which was heated by the heating means in the axial direction, and the metal material is quenched by spraying a cooling medium at the portion of the metal material which was heated by the heating means by a cooling means disposed between the heating means and the movable roller die. Errors in a product due to bending are suppressed by supporting a portion of the metal material which has exited from the movable roller die.

A product intermittently having a bent portion which curves three-dimensionally and a quenched portion is manufactured by performing bending downstream of a support means while feeding a metal material which is supported by the support means from an upstream side towards a downstream side. A portion of the metal material is heated by a heating means downstream of the support means. A bending moment is imparted to the portion of the metal material heated by the heating means to three-dimensionally change the position of a movable roller die which is disposed downstream of the heating means and has a plurality of rolls which feed the heated metal material in the axial direction, and the metal material is quenched by spraying a cooling medium at the portion of the metal material which was heated by a cooling means disposed between the heating means and the movable roller die.

The invention discloses a high-precision hydraulic plate bending machine and belongs to the technical field of machine tool manufacturing. The high-precision hydraulic plate bending machine comprises a frame, a slider assembly, a slider travel adjustment mechanism, a synchronous mechanism, and a rear stop mechanism. The middle of each of rear, main and front vertical plates of the frame is provided with a cylinder holding cavity which three compensating cylinders are mounted inside. The lower portion of a slider is connected with an upper die through a clamping component. The upper die is composed of twenty upper die segments. In the slider travel adjustment mechanism, a first worm and a second worm are driven through a transmission shaft so as to drive a first screw and a second screw to adjust up and down; two synchronous forks are fixedly connected to a synchronous shaft of the synchronous mechanism, and the moving ends of the synchronous forks are both connected with the slider through a fork joint bearing. The rear stop mechanism comprises a transmission system component and a slide carriage system component. The high-precision hydraulic plate bending machine has the advantages that precision of the machine bending work pieces is greatly improved and work efficiency of workers is also improved.

The invention relates to a steel bar bender and a use method thereof. The steel bar bender comprises a working disc, which is arranged on the upper portion of a machine tool and drivingly matched with a transmission mechanism; the working disc is provided with a central shaft hole and a bent shaft hole; the central shaft hole is provided with a central pile casing wheel, and the outer surface of the central pile casing wheel is provided with a circumferentially arranged first groove; the bent shaft hole is provided with an auxiliary pile guide wheel, and the outer surface of the auxiliary pile guide wheel is provided with a circumferentially arranged second groove. The steel bar bender also comprises a positioning baffle between a positioning plate and the working disc, and the side surface of the positioning baffle, which faces towards the central pile casing wheel when in use, is provided with a third groove. By means of the first groove, the second groove and the third groove, the steel bar bender can avoid sliding of straight steel bars during a bending process and prolong the service life, and meanwhile, can ensure the bending precision and during bending operation, can achieve the effects of avoiding out-of-circularity of the straight steel bars as well as ensuring equal diameter of bent sections of non-bent sections.

The invention discloses a bending mould which comprises an upper mould and a lower mould; the upper mould comprises an upper mould seat, a fixed plate, two groups of transverse main slide blocks, two groups of longitudinal side slide blocks and a drive block; the lower mould comprises a lower mould seat and a rectangular bending frame fixedly arranged on the lower mould seat; the rectangular bending frame is used for placing a to-be-bent workpiece; and an inner cavity of the rectangular bending frame is adaptive to a rectangular body. The upper mould is equipped with the rectangular body with a telescopic size, and the rectangular body is matched with the rectangular frame of the lower mould, so that bending and mould-molding of the four-side bent workpiece can be easily realized, and the formed workpiece is taken out after being de-molded, and therefore, processing efficiency is greatly improved, and bending precision further can be guaranteed.

A bender speed planning method and device are disclosed. The method comprises the following steps: in step a, a theoretical board inspection position speed of an upper mold is calculated; in step b, a second segment limit speed of the upper mold is compared with the theoretical board inspection position speed, a lower one is board inspection position speed of the upper mold; in step c, a dead centre position speed is zero and the board inspection position speed, first segment movement of the upper mold is planned based on a minimal time principle, planning is finished when the planning succeed, otherwise the board inspection position speed is recalculated; in step d, a bending object position speed of the upper mold is zero and the board inspection position speed, and second segment movement of the upper mold is planned based on a minimal movement time principle; the device comprises a calculation module, a comparison module, a first segment planning module and a second segment planning module that are orderly connected. Thus, after speed planning is done, a pressing plate drives the upper mold to move as planned, movement time can be shortened, and bending efficiency can be improved.

The invention provides an automobile coil winding spot welding assembly line. The automobile coil winding spot welding assembly line comprises a terminal bending mechanism, wherein the terminal bending mechanism comprises a bending assembly and a clamping assembly. The bending assembly comprises a first driving device and a roller. The first driving device is connected with the roller, and a positioning groove is formed in the roller. The clamping assembly comprises a first clamping block, a second clamping block and a second driving device, wherein the second driving device drives the first clamping block to move towards the second clamping block. By adopting the structure, a clamping block driving assembly drives the first clamping block to move towards the second clamping block, a PIN positioned in the first clamping block and the second clamping block is clamped, the PIN is prevented from moving in the bending process, bending precision is ensured, and the first driving device drives the roller to enable the clamped PIN to be bent on the first clamping block. The PIN is positioned in the positioning groove of the roller, the positioning groove is used for positioning the bending position of the PIN to ensure bending precision, and full-automatic bending is achieved without manual intervention.

The invention discloses a bending heat exchanger and a bending method of the heat exchanger. The bending heat exchanger comprises a first collecting pipe, a second collecting pipe, a plurality of fins and a plurality of flat pipes. Each flat pipe comprises a first portion, a second portion and a middle portion connected with the first portion and the second portion; and the first portions and the second portions are in contact with the fins respectively. Each middle portion comprises a first twisting portion, a second twisting portion and a straightness portion, wherein the first twisting portion is connected with the corresponding first portion, the second twisting portion is connected with the corresponding second portion, and the straightness portion is connected with the first twisting portion and the second twisting portion. The straightness portions of the flat pipes are sequentially overlapped partly and are sequentially and tightly attached together. Each straightness portion comprises an inner surface and an outer surface, and the inner surfaces and the outer surfaces of the straightness portions are flat on the flat. According to the arrangement, the bending precision can be ensured, and in addition, the flat bending portions can reduce the height of the bending heat exchanger; and under the condition of the same length of the flat pipes, the length of fin segments is increased, and therefore the heat exchange performance of the heat exchanger can be improved.

The invention discloses a semi-automatic scale mark reinforcing steel bar bending machine, relates to the technical field of reinforcing bar bending forming devices, and aims at providing the semi-automatic scale mark reinforcing steel bar bending machine with the accurate bending angle. According to the technical scheme, the semi-automatic scale mark reinforcing steel bar bending machine comprises a machine tool. A working disc connected with the machine tool is arranged at the upper portion of the machine tool. A rotating disc is arranged at the center of the working disc and connected with a power mechanism inside the machine tool and rotates around the axis of the rotating disc. A plurality of positioning shaft holes and a plurality of clamping shaft holes are evenly distributed in the rotating disc in the circumferential direction of the rotating disc. Positioning shafts and clamping shafts are correspondingly placed in the positioning shaft holes and the clamping shaft holes respectively. The working disc and the rotating disc are each provided with scale marks. The number of the scale marks on the rotating disc is larger than the number of the scale marks on the working disc. Through the position relation between the zero scale mark on the working disc and the zero scale mark on the rotating disc and through the scale marks, coinciding with the scale marks on the working disc, of the rotating disc, the rotation angle of the rotating disc can be obtained.

The invention provides a processing technology for glass with a super-large arc length. The processing technology comprises the steps of heating and air-blowing molding. In the step of heating, plateglass performs reciprocating movement in a heating section under the transferring of a heating roller table group and is simultaneously heated by upper lower heating wires, wherein the heating temperature of the middle sections of the upper heating wires is higher than the heating temperature of the middle sections of the lower heating wires. In the step of air-blowing molding, the sizes of air openings of upper and lower air grids in a horizontal toughening furnace are adjusted so as to allow the opening size of the air opening of the upper air grid to be gradually increasing from two ends ofthe length direction of a horizontal air grid roller way to the center of the length direction and the opening size of the air opening of the lower air grid to be gradually increasing from center totwo ends; then the horizontal air grid roller way is adjusted to realize alignment with a heating roller way and an unloading roller way; then the horizontal air grid roller way, the upper air grid and the lower air grid are opened; and finally, the heated and softened glass is rapidly transferred into the horizontal air grid roller way, and is allowed to deform under the actions of the upper airgrid and the lower air grid and then to be corrected and molded. The processing technology provided by the invention can produce the glass with an ultra-large arc length of 4,000 to 5,000 mm and guarantees bending precision of the glass.

The invention discloses a connecting-rod-type bending device for bending steel in a steel forming machine. The connecting-rod-type bending device for bending the steel in the steel forming machine comprises a hinged pin shaft, a locating pin, a push rod, a connecting rod, a pin shaft thrust base and a hinged plate. The push rod, the connecting rod, the pin shaft thrust base and the hinged plate are sequentially connected in a hinged mode. The hinged plate is provided with an inner limiting pin which is used for limiting the inner rotation distance of the pin shaft thrust base and an outer limiting pin which is used for limiting the external rotation distance of the pin shaft thrust base. An inner clamping part and an outer clamping part are correspondingly arranged on the pin shaft thrust base. A location pin is arranged on the pin shaft thrust base. When steel is bent, the locating pin is pushed by the pin shaft thrust base to move forward a certain distance and matched with the hinged pin shaft to tightly press the steel, and the inner limiting pin is enabled to reach the inner clamping part. The pin shaft thrust base is stressed to move forward and the hinged plate is driven to swing. At the same time, the locating pin rotates around the hinged pin shaft to bend the steel. The connecting-rod-type bending device for bending the steel in the steel forming machine has the advantages that the distance between the hinged pin shaft and the locating pin can be changed when the steel is bent, and requirements for high working efficiency and high bending accuracy are simultaneously met when the steel is bent.

The invention discloses a semiautomatic steel bar bender, which relates to the technical field of steel bar-bending equipment. The invention aims to provide the semiautomatic steel bar bender which can deal with steel bars with different bending radii. The technical scheme of the invention is as follows: the semiautomatic steel bar bender comprises a machine bed, a working plate which is connected with the machine bed is arranged on the top of the machine bed, a rotary disk is arranged at the center of the working plate, the rotary disk is connected with a power mechanism in the machine bed and can rotate around the axis of the rotary disk, a plurality of positioning shaft holes and clamping shaft holes are evenly distributed along the circumferential direction of the rotary disk on the rotary disk, the positioning shaft holes form a plurality of concentric circles on the rotary disk, positioning shafts and clamping shafts are respectively correspondingly placed in the positioning shaft holes and the clamping shaft holes, backing pin blocks and rollers are arranged on both sides of the working plate, and backing pins are arranged on the backing pin blocks. The invention is applicable to steel bar bender.

The invention discloses a steel bar bending machine and relates to the technical field of steel bar bending molding equipment. The invention aims to provide the steel bar bending machine capable of processing steel bars with different bending radii. According to the technical scheme, the steel bar bending machine comprises a working plate located at the top part of a machine body, positioning shafts and clamping shafts, wherein the working plate comprises a fixed plate and a rotating plate, the rotating plate and a driving device inside the machine body are connected and the rotating plate rotates around the axial line of the rotating plate, a plurality of positioning shaft holes and clamping shaft holes are evenly formed in the rotating plate and along the peripheral direction of the rotating plate, the positioning shaft holes form a plurality of concentric circles on the rotating plate, the positioning shafts and the clamping shafts are respectively and correspondingly placed inside the positioning shaft holes and the clamping shaft holes, a pin stopping hole is formed in the fixed plate, and a pin stopping shaft is arranged inside the pin stopping hole. The positioning shaft holes form the concentric circles on the rotating plate, the steel bars with different bending radii can be processed aiming at the positioning shaft holes of different diameters, and the application range of the steel bar bending machine is enlarged. The steel bar bending machine is suitable for serving as a steel bar bending machine.

The invention discloses flanging and bending equipment for a metal plate shell of a range hood. The flanging and bending equipment comprises an equipment body, a product positioning tool, an upper pressing cutting die assembly, a lower pressing cutting die and a lower overturning cutting die assembly, wherein the product positioning tool, the upper pressing cutting die assembly, the lower pressing cutting die and the lower overturning cutting die assembly are mounted on the surface of the body. An auxiliary feeding assembly and a rear auxiliary feeding assembly of the product positioning tool are used for feeding and fixing. Left and right mounting supports are located on the left side and the right side of a to-be-machined metal plate and used for clamping the metal plate. A bending upper cutting die of the upper pressing cutting die assembly is located at the upper end of the bent edge of the fed to-be-machined metal plate and used for pressing the upper portion of a to-be-bent line. The lower overturning cutting die assembly rotates the to-be-bent edge upwards. According to the flanging and bending equipment for the metal plate shell of the range hood, the bending line position of the metal plate can be accurately adjusted, and the bending precision of metal plates made of different materials is guaranteed.

The invention is suitable for the technical field of metal plate machining, and provides a metal plate bending machining forming device. The metal plate bending machining forming device comprises a fixing base and further comprises a bending mechanism, wherein the bending mechanism is installed on the fixing base, the bending mechanism comprises a bending assembly, an elastic pressing assembly, a driving assembly and an adjusting assembly, the driving assembly drives the bending assembly to bend a metal plate through telescopic movement, the adjusting assembly is used for changing the telescopic stroke of the driving assembly, and the driving assembly adjusts the bending angle of the metal plate by adjusting the telescopic stroke. A metal plate is placed on the bending assembly, the telescopic stroke of the driving assembly is adjusted by controlling the adjusting assembly, then the bending angle of the bending assembly to the metal plate is controlled, and when the driving assembly drives the bending assembly to bend the metal plate after adjustment is completed, the bending assembly drives the elastic pressing assembly to limit the metal plate, so that the metal plate is prevented from sliding in the bending process, and the bending precision is ensured.