CN106513493A - Reshaping method for hot-extrusion through holes of working clip in forging mode - Google Patents

Abstract

The invention discloses a reshaping method for hot-extrusion through holes of a working clip in a forging mode. The reshaping method is characterized by comprising an upper molding board, a lower molding board and a pulling plate, wherein a mould handle is mounted on the upper molding board; a convex mould is mounted on the mould handle; two unloading rods are mounted on the lower molding board; unloading plates are mounted on the unloading rods; springs in the state of compression are arranged on the unloading rods between the unloading plates and the lower molding board in a sleeving mode; convex mould sleeves are mounted on the unloading plates; and a concave mould matched with the convex mould is further mounted on the lower molding board. The convex mould and the convex mould sleeve are centered in a matched mode and enter the concave mould for being re-shaped after being pierced, so that products are prevented from offsetting, height of the products can be fixed after being regulated, and reshaped workpieces are guaranteed to reach process requirements; the reshaped convex mould drives the workpieces to ascend, and the convex mould and the convex mould sleeve are separated to complete unloading after the workpieces reach set positions; and compared with an existing process, the forming method has the beneficial effects of saving consumption of raw materials, reducing machining processes and achieving the purpose of reducing cost by about 20%.

Description

The shaping methods of hammered work intermediate plate hot extrusion through hole

Technical field

The present invention relates to the mould that a kind of forging technology is used, specifically refers to the shaping methods of hammered work intermediate plate hot extrusion through hole.

Background technology

As the development of prestressing technique, intermediate plate anchor proportion in prestress engineering are increasing, consumption is sharply increased, and the maximum when anchor clipper of most important in intermediate plate anchor, consumption.For clamping presstressed reinforcing steel when the deformed bar of prestressed concrete member is determined in anchoring, he is widely used in the construction such as different types of rridges road skyscraper anchor clipper.The traditional handicraft of each prestressing force manufacturer production anchor clipper is to adopt round bar at present, then carries out splitting the operations such as end face, turning hole, drilling, smart car endoporus, processing hole taper, tapping thread, car external taper, cutting, heat treatment and sandblasting.Blasting treatment process after heat treatment is little to the impact of surface of the work and shear action power, causes inefficiency, and the workpiece surface quality after process is poor.

The content of the invention

It is an object of the invention to provide the shaping methods of hammered work intermediate plate hot extrusion through hole, coordinate processing technology, the method for substituting machining manufacture anchor work clip sheet reaches the consumption for reducing raw material, reduces machining processes, the purpose of reduces cost.

The purpose of the present invention is achieved through the following technical solutions：

The shaping methods of hammered work intermediate plate hot extrusion through hole, including the upper die plate being connected on punch press and the lower template immediately below upper die plate, die shank is installed on described upper die plate, punch is installed on die shank, two discharge arms are installed in lower template, stripper is installed on discharge arm, on the discharge arm between stripper and lower template, be set with the spring in compressive state, punch case is installed on stripper, the die matched with punch is also equipped with lower template.During use, the workpiece that mould is forged is put in die, punch press drives upper die plate, upper die plate drives punch to move downward, punch initially passes through the through hole of punch case, then could continue to move downward, forging extruding is carried out to workpiece, after completing extruding, spring in compressive state drives stripper to move upwards, when extreme higher position is reached, punch is continued up, and workpiece departs from punch in the presence of stripper, after workpiece is ejected, workpiece is can be taken off, new workpiece is installed, is processed next time.Relative to current technique, the through hole of anchor work clip sheet is processed into by the way of mould forging, instead of current bore process, the usage amount of raw material is saved, according to the volume of work clip sheet through hole with the relation of the cumulative volume of work clip sheet it is known that compare current technique, the consumption that can be saved material, machining processes are reduced, the purpose of cost 20% or so is reduced.

Die holder is installed in described lower template, die circle stress is set with die holder, die is set with die circle stress, die is connected by taper fit with die circle stress, die circle stress is fixedly connected on die holder by die locking nut, upper table inside die holder face down concave shape cyclization connected in star, be placed with groove perforation pad.Further, die belongs to running stores, it can be the independent original paper of replacing, die is connected with die circle stress by taper fit, die circle stress provides anti-impact force for die, die circle stress is fixedly connected on die holder by die locking nut, so, die not only can be changed when die is damaged, and the model of processing workpiece can be expanded, arrange fluted on the die holder of die bottom, inside grooves are placed with a perforation pad, its effect is that punch can stamp out through hole completely, impact of the punch press to die holder is reduced simultaneously, ensure that the punching press of through hole is completed.

The through hole being provided with the base plate, die holder and perforation pad immediately below punch.

The punch is fixedly connected on die shank by punch locking nut, on the punch locking nut is provided with water pipe head.Further, as the punch in running order time is longer, the heat which is subject to is larger, in order to lower the temperature to punch, water pipe head, water pipe head connection coolant is provided with punch locking nut, the normal working temperature of punch can be kept, it is to avoid the too high problem brought of temperature.

The present invention compared with prior art, has the following advantages and advantages：

The shaping methods of 1 hammered work intermediate plate hot extrusion through hole of the present invention, relative to current technique, the through hole of anchor work clip sheet is processed into by the way of mould forging, current bore process is instead of, the usage amount of raw material has been saved, can be learnt according to the relation of the cumulative volume of the volume and work clip sheet of work clip sheet through hole, compare current technique, the consumption that can be saved material, reduces machining processes, reduces the purpose of cost 20% or so；

The shaping methods of 2 hammered work intermediate plate hot extrusion through holes of the present invention, maximum feature is first bored a hole reshaping into die together with after punch and punch case first coordinate centering, prevent product eccentric, can fix after highly adjusted, it is ensured that after shaping, workpiece reaches technological requirement, after shaping, punch rises with workpiece, to after setting position, punch separates discharging with punch case and completes, workpiece is taken out, while cooling down to mould by automatic cooling system, mould parts realize quick-replaceable；

The shaping methods of 3 hammered work intermediate plate hot extrusion through holes of the present invention, structure is novel, be simple to manufacture, cooling, lubrication, discharging, die change time≤10min automatically, and the service life of punch reaches 10000/.

Description of the drawings

Fig. 1 is schematic structural view of the invention；

Fig. 2 is the Workpiece structure schematic diagram Jing after present invention processing.

Mark and corresponding parts title in accompanying drawing：

301- die shanks, 303- water pipe heads, 305- punch, 306- dies, 307- die circle stresses, 308- die locking nuts, 309- die holders, 313- upper die plates, 314- punch locking nuts, 315- punch cases, 317- perforation pads, 321- lower templates, 323- discharge arms, 324- springs, 325- strippers.

Specific embodiment

With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.

Embodiment

As shown in Figure 1, the shaping methods of hammered work intermediate plate hot extrusion through hole of the present invention, including the upper die plate 313 being connected on punch press, and lower template 321 immediately below upper die plate 313, die shank 301 is installed on upper die plate 313, punch 305 is installed on die shank 301, punch 305 is fixedly connected on die shank 301 by punch locking nut 315, is provided with water pipe head 303 on punch locking nut 315；Two discharge arms 323 are installed in lower template 321, stripper 325 is installed on discharge arm 323, be set with the spring 324 in compressive state on the discharge arm 323 between stripper 325 and lower template 321, punch case 315 is installed on stripper 325；Die holder 309 is installed in lower template 321, die holder 309 is located at immediately below punch 305, die circle stress 307 is set with die holder 309, die 306 is set with die circle stress 307, die 306 is connected by taper fit with die circle stress 307, die circle stress 307 is fixedly connected on die holder 309 by die locking nut 308, upper table inside die holder 309 face down concave shape cyclization connected in star, be placed with perforation pad 317 in groove, base plate 321, die holder 309, and perforation pad 317 on be provided with through hole immediately below punch 305.

The use technique of the shaping methods of hammered work intermediate plate hot extrusion through hole, comprises the following steps：

（A）Blanking：Using sawing machine blanking, the size of blank is φ 25 × 33.5；

（B）Deburring：Using grinder to step（A）Blank deburring, burr on blank, greasy dirt, rust staining and dirt are removed, after blank cleaning is clean, blank are separated according to different heat (batch) numbers；

（C）Heating：By step（B）Clean blank place heating in medium frequency stove heat, heating-up temperature is 1100 ± 20 DEG C；

（D）Blocking：Using 100 tons of punch presses, following steps are completed in 5S：

（D1）Mould is correctly installed, checks whether punch, die align, whether close height correct, and punch case is into after die 20mm according to product height fine adjusting function；

（D2）Recirculated cooling water being opened, the flow of die recirculated cooling water being adjusted according to mold temperature, allow cooling water energy to enter in die, it is 1～5ml/s that cooling water enters the flow of die；

（D3）Start, first dry running twice, check whether punch press is normal；

（D4）Blank clamp after heating is properly placed in die, is forged, when slide block returns to after top dead center, taken out forging, be transferred to shaping dies；

（E）Shaping：Using 100 tons of punch presses, complete to step in 5S（D4）The forging for obtaining is followed the steps below：

（E1）Mould is correctly installed, checks whether punch, die align, whether close height correct, and punch case is into after die 14.5mm according to product height fine adjusting function；

（E2）Recirculated cooling water being opened, die circulating cooling water flow being adjusted according to mold temperature, allow cooling water energy to enter in die, it is 1～5ml/s that cooling water enters the flow of die；

（E3）Start, first dry running twice, check whether punch press is normal；

（E4）Blocking good workpiece clamp is properly placed in die, is forged, when slide block returns to after top dead center, taken out forging, be transferred to shaping mould；

（F）Shaping：Using 100 tons of punch presses, to step（E）The forging for obtaining carries out forward extrusion closed-die forging；The step（F）Needs are completed in 5S, specifically include following steps：

（F1）Mould is correctly installed, checks whether punch, die align, whether close height correct, and punch case is into after die 16.5mm according to product height fine adjusting function；

（F2）Recirculated cooling water being opened, the flow of die recirculated cooling water being adjusted according to mold temperature, allow cooling water energy to enter in die, it is 1～5ml/s that cooling water enters the flow of die；

（F3）Start, first dry running twice, check whether punch press is normal；

（F4）Formed workpiece clamp is properly placed in die, is forged, when slide block returns to after top dead center, take out forging；

（G）Cooling：By step（F4）The forging for obtaining is cooled to 600 DEG C in being positioned over lubricating substance groove after, forging is hooked into heap in hopper cold；

（H）Ball blast：With shot-blasting machine by step（G）The workpiece oxide skin for obtaining is removed completely.

Checked finally according to blank drawing, Jing statistics, product percent of pass of the technique in the experimental stage reaches more than 98%, the qualification rate of significantly larger than current machinofacture.

The above, is only presently preferred embodiments of the present invention, not does any pro forma restriction to the present invention, and any simple modification made to above example in every technical spirit according to the present invention, equivalent variations are each fallen within protection scope of the present invention.

Claims (4)

1. shaping methods of hammered work intermediate plate hot extrusion through hole, including the upper die plate being connected on punch press（313）, and be located at upper die plate（313）The lower template of underface（321）, it is characterised in that：In described upper die plate（313）On die shank is installed（301）, in die shank（301）On punch is installed（305）, in lower template（321）On two discharge arms are installed（323）, in discharge arm（323）On stripper is installed（325）, in stripper（325）With lower template（321）Between discharge arm（323）On be set with spring in compressive state（324）, in stripper（325）On punch case is installed（315）, in lower template（321）On be also equipped with and punch（305）The die for matching（306）The workpiece that mould is forged is put in die, punch press drives upper die plate, upper die plate drives punch to move downward, punch initially passes through the through hole of punch case, then could continue to move downward, forging extruding is carried out to workpiece, after completing extruding, spring in compressive state drives stripper to move upwards, when extreme higher position is reached, punch is continued up, and workpiece departs from punch in the presence of stripper, after workpiece is ejected, workpiece is can be taken off, new workpiece is installed, is processed next time.

2. shaping methods of hammered work intermediate plate hot extrusion through hole according to claim 1, it is characterised in that：In described lower template（321）On die holder is installed（309）, in die holder（309）Die circle stress is set with inside（307）, in die circle stress（307）Die is set with inside（306）, die（306）With die circle stress（307）Connected by taper fit, die circle stress（307）By die locking nut（308）It is fixedly connected on die holder（309）On, die holder（309）Internal upper table faces down concave shape cyclization connected in star, is placed with perforation pad in groove（317）.

3. shaping methods of hammered work intermediate plate hot extrusion through hole according to claim 2, it is characterised in that：In the base plate（321）, die holder（309）, and perforation pad（317）On be provided with positioned at punch（305）The through hole of underface.

4. shaping methods of hammered work intermediate plate hot extrusion through hole according to claim 1, it is characterised in that：The punch（305）By punch locking nut（315）It is fixedly connected on die shank（301）On, in the punch locking nut（315）On be provided with water pipe head（303）.