963 results about "Bar stock" patented technology

The invention provides an automatic metal bar cutting device, and relates to the technical field of metal bar machining equipment. A vertical frame is fixedly arranged on the top of the cutting table in a vertically upward mode, and a feeding frame used for conveying and straightening bars is fixedly arranged at one end of the vertical frame. A traction seat is fixedly arranged on the vertical frame at the inner end of the feeding frame; a feeding air cylinder is arranged on the back of the vertical frame in the feeding direction. Through the synergistic effect that the fixed wheel and the movable wheel in the feeding frame are matched with the straightening pressing rod, the straightening pressing rod is driven by the feeding air cylinder to extrude the protrusion of the movable wheel sleeve, the height of the movable wheel sleeve is forced to be dynamically adjusted under the action of the first spring, and it is ensured that the bar is always subjected to uniform straightening pressure in the conveying process. The vertical position of the straightening pressing rod can be rapidly adjusted through the adjusting screw rod, the straightening requirements of bars with different diameters are met, bending deformation of the bars is effectively eliminated, and the follow-up cutting precision and the finished product quality are remarkably improved.

The invention relates to the technical field of forge piece forming, in particular to a deep-cavity thin-wall support forge piece, a forging die and a forming method.The deep-cavity thin-wall support forge piece is characterized in that a heated round bar is subjected to roll forging to obtain a preformed blank, and oxide skin of the blank obtained after roll forging is removed; putting the prefabricated blank into a pre-forging cavity of a forming die, and performing pre-forging forming; after pre-forging is finished, the pre-forged piece is transferred into a precision forging cavity of the same forming die to be subjected to precision forging forming, and a bilaterally symmetrical precision forging piece is obtained; putting the bilaterally symmetrical precision forgings into a slicing die frame for trimming, and cutting off flashes; cutting the bilaterally symmetrical precision forgings subjected to cold shaping from the shunting bin through a cutting device, and separating the bilaterally symmetrical precision forgings into two independent single forgings; forming defects are eliminated, and the forging yield is improved to the level of stable mass production; the thickness tolerance of the functional surface of the product is ensured, the spot welding current stability and the welding strength are ensured, the assembly requirement is met, and the dependence on subsequent machining is reduced; the material cost is reduced and the mold life is prolonged.

The invention relates to the technical field of metal powder manufacturing products, in particular to an automatic ring part production line and a process control method.Bar heating furnaces of the production line are arranged on the inner side and the outer side of a guide rail in two rows and multiple sets, a transfer manipulator is arranged on the guide rail, a ring forging press machine is arranged at the front end of the guide rail, and a movable workbench is arranged at the ring forging press machine; the ring rolling machine is arranged in front of the ring forging press machine, the center line of the ring rolling machine and the center line of the ring forging press machine are obliquely arranged, a carrying mechanical arm is arranged between the ring rolling machine and the ring forging press machine, the conveying roller way is arranged in front of the ring rolling machine, and the center line of the conveying roller way and the center line of the ring rolling machine are obliquely arranged. The center line of the conveying roller way is parallel to the center line of the ring forging press, and the swing manipulator is arranged in an included angle formed by the ring rolling machine and the conveying roller way. According to the production line and the control method, the production process is optimized, the production efficiency is improved, and the production cost is reduced.

The invention discloses a weldless integral high-strength feeding drill rod and a preparation method thereof. The drill rod comprises a female connector, an elevator groove, a thick-wall slip clamping section, a drill rod pipe body and a male connector which are integrally formed and have the same inner diameter. The drill rod is manufactured by integrally machining a solid bar or a thick-wall pipe body. The yield strength of the drill rod pipe body, the yield strength of the thick-wall slip clamping section and the yield strength of the elevator groove are 135 ksi-180 ksi, and the yield strength of the male connector and the yield strength of the female connector are 130 ksi-150 ksi; the outer diameter of the thick-wall slip clamping section is larger than that of the drill rod pipe body; the outer diameter of the elevator groove is smaller than that of the clamping section of the thick-wall slip; the outer diameter of the elevator groove is not smaller than that of the drill rod pipe body. The outer diameter of the connector does not need to be obviously increased, meanwhile, enough elevator lifting capacity is guaranteed, and the problem of poor structure performance caused by friction welding seams and welding area heat treatment is avoided. Complicated welding, postweld heat treatment and other procedures are omitted, the possibility that a weld joint serves as a performance weak link is avoided, higher comprehensive tensile mechanical performance is achieved, and the method is suitable for well drilling application of extra-deep wells, ocean deep wells and the like.

The invention discloses a first-opening and second-closing type long bar end upset head forming die, relates to the technical field of steel bar upsetting, and aims to solve the problem that in the prior art, the head shape complexity and the forming quality are difficult to consider at the same time. The die comprises a forming die and a clamping die which are arranged along the axis of a bar and are both of a two-half split structure, and a continuous cavity is formed when the die is closed. The clamping die is not completely closed to effectively clamp a bar during die assembly, the forming die is completely closed to form a through rod forming cavity during die assembly, and an annular boss is arranged on the end face, away from the clamping die, of the forming die. The upset head is arranged on the same axis as the forming die and can move in the axis direction, a head forming cavity is formed in the end, close to the forming die, of the upset head and is composed of a head forming section and a guide section, and the annular boss of the forming die can enter the guide section and slide. The forging die has the advantages of open die forging and closed die forging, upsetting of complex head forms can be achieved, material gathering is effectively restrained, rod materials are prevented from being bent and folded, the forming quality is improved, and operation is convenient.

The utility model discloses a bar clamping mechanism of a numerically controlled lathe, which belongs to the technical field of numerically controlled lathes and comprises a clamping seat, a first through hole is arranged at the center of the clamping seat, a first cavity is arranged on one side inside the clamping seat, and the first cavity is communicated with the first through hole. And a protection fixing assembly and an auxiliary dust removal assembly are arranged in the first cavity. According to the long bar clamping and fixing device, the driving motor drives the rotating shaft, the first lead screw and the second lead screw to rotate, so that the two threaded sleeves respectively drive the flat plate, the arc-shaped block, the spring and the flexible plate to move relatively, the long bar is clamped and fixed in an auxiliary mode through the flexible plate, and the clamping and fixing effect on the long bar is further improved; and meanwhile, the arc-shaped blocks can shield the first through holes, so that sweeps are prevented from entering the numerical control lathe in the long bar machining process, and therefore the use protection performance of the device is effectively improved.

The invention relates to the technical field of metal material plastic forming, and discloses an extrusion feeding device, an extrusion forming system and a control method.The extrusion feeding device comprises a loading module and a feeding driving module, and the loading module is arranged between an extrusion driving device and an extrusion forming device; a plurality of loading parts used for loading bars are distributed on the loading module, the plurality of loading parts extend and penetrate in the first direction, the loading module is provided with a heating assembly, and the heating assembly is used for heating the bars of the plurality of loading parts; the feeding driving module is used for driving the loading module to move in the direction perpendicular to the first direction so as to control the loading module to move out of or move into the working position between the extrusion driving device and the extrusion forming device. According to the invention, the heating assembly and the plurality of loading parts are adopted, bar material supplement and temperature stabilization are completed in the extrusion stroke, the extrusion temperature of the bar material can be accurately controlled, and the controllability of extrusion process conditions is ensured.

The invention discloses a bar cutting device, relates to the technical field of machining equipment, and aims to solve the problems of low bar cutting efficiency and poor size consistency in the prior art. The device comprises a supporting frame, and an equidistant cutting mechanism, an equidistant clamping mechanism and an auxiliary assembly are arranged on the supporting frame; the equidistant cutting mechanism comprises a cutting frame, a cam shaft and a spline shaft are rotationally arranged on the cutting frame, a spacing sliding block is slidably arranged on a guide shaft, a cam shaft spiral groove drives the spacing sliding block to slide equidistantly through a driven protrusion, the spline shaft is sleeved with a spline sleeve, and the spline sleeve is connected with a saw disc. The equidistant clamping mechanism comprises a clamping frame and is linked with a distance separation sliding block through a linkage rod, so that the clamping position corresponds to the cutting position; the auxiliary assembly comprises a material supporting frame, a bar detection assembly, a limiting assembly and a material receiving plate. The device can complete multi-section equal-distance cutting of the bars at a time, is high in cutting efficiency and good in size consistency, and meets the cutting requirements of the bars of different specifications.

The invention relates to the technical field of microbits, in particular to a continuous machining system for microbit bars and a machining method.The continuous machining system comprises a first feeding sliding way, a second feeding sliding way, a first flywheel and a second flywheel, a first discharging bin is arranged on one side of the first flywheel, and the interiors of the first discharging bin and the first flywheel are communicated; a plurality of guide telescopic rods are arranged between the first flywheel and the first discharging bin, a second discharging bin is arranged on one side of the second flywheel, the second flywheel and the second discharging bin are internally communicated, and the second flywheel is rotationally connected with the second discharging bin; the first feeding sliding way is used for conveying tungsten steel bars to the first discharging bin, the second feeding sliding way is used for conveying stainless steel bars to the second discharging bin, and discharging openings are formed in the upper end of the first discharging bin and the upper end of the second discharging bin. A first pushing mechanism is arranged on the inner side of the first discharging bin, a second pushing mechanism is arranged on the inner side of the second discharging bin, and the continuous machining function is conveniently, rapidly and efficiently achieved.

The invention belongs to the field of forging, and particularly relates to a forging method for a non-concentric step type rough mold. Comprising the following steps: 1, determining a rough pattern according to a die forging; 2, a bar is selected according to the rough pattern and processed to be made into a blank; 3, one end face of the bar or the blank is attached to one side of the V-shaped forming die through the V-shaped forming die, the side edge of the bar or the blank is attached to the other side of the V-shaped forming die, and one corner of the bar or the blank is upset; step 4, determining a molding bed according to the rough shape graph; 5, the flat end face of the blank placed on the side, not extruded, of the lower end in the step 3 is placed at the lower end of the forming die, and the blank on the side, extruded by the upper hammer anvil, of the succulent part is placed on the eccentric side of the forming die; and 6, the blank is forged in the forming tire mold, and the blank flows downwards and towards the left side and the right side under the action of the upper hammer anvil to form a rough mold.

The invention relates to the technical field of machine manufacturing, in particular to a multi-specification small bar hot forging auxiliary feeding mechanism which comprises a feeding mechanism, a heating mechanism, a pushing mechanism, a transferring mechanical arm and a forging and pressing mechanism, a tubular heating furnace is used for heating the middle section of a bar, and a first feeding clamping jaw and a second feeding clamping jaw are used for clamping the bottom of the bar. After a four-degree-of-freedom mechanical arm clamps a bar to a hexagonal chuck on one side, the bar continues to be clamped from a material receiving table to be put into a hexagonal chuck of a workbench on the other side, and a previous heated bar is taken out to be put into a storage table; the tubular heating furnace is arranged between the hexagonal chucks of the two workbenches, so that bars can conveniently enter the tubular heating furnace at intervals, and the energy utilization efficiency is improved; the bottom of a bar is clamped, pushed and forged through the first feeding clamping jaw, the second feeding clamping jaw and the rotating unit, the bar of the six-degree-of-freedom mechanical arm is received through a cylindrical groove in the rotating wheel, and connection of the bar between the different clamping jaws is achieved.

The invention discloses a centerless grinding machine bar conveying mechanism in the technical field of centerless grinding machines, and the centerless grinding machine bar conveying mechanism comprises a machining device, a discharging assembly and a fixing frame, the fixing frame is provided with a conveying groove, a guide groove, a storage box and a discharging box, and an adjustable limiting assembly and an intermittent shifting assembly are arranged in the guide groove; a discharging groove, a pushing plate, a pushing shaft and a movable overturning assembly are arranged in the conveying groove, and a discharging assembly is arranged at the discharging groove. Bars are in a single-layer tiled state in the guide groove through the adjusting type limiting assembly, and the adjusting type limiting assembly is matched with the intermittent shifting assembly to sequentially shift and transfer the bars; by arranging the discharging groove and the discharging assembly, unqualified bars are discharged out of the conveying groove in time; the material pushing plate and the material pushing shaft are driven to move by moving the overturning assembly, bars are pushed and conveyed, and the material pushing plate is driven to rotate upwards when returning so as to be staggered with the positions of the bars in the conveying groove, so that feeding of the conveying groove and returning of the material pushing plate can be carried out, and the machining efficiency is improved.

The utility model provides a bar processing machine tool, and belongs to the technical field of machine tools. The technical problem that an existing bar machining machine tool is single in function is solved. The bar processing machine tool comprises a rack and a material preparation seat, a shaft seat is fixed on the rack, a main shaft is rotationally connected to the shaft seat, the material preparation seat is located at one end of the feeding end of the main shaft, and a movable table capable of freely moving in the X-axis direction and the Y-axis direction is arranged at the position, located at the processing end of the main shaft, of the rack; the main shaft is a hollow pipe, pneumatic chucks are arranged at the two ends of the main shaft, and the centers of the two pneumatic chucks are located on the axis of the main shaft. A feeding table and a discharging gripper are arranged on the material preparation seat, and the feeding table and the discharging gripper can alternately move to the position aligned with the main shaft; a plurality of machining tools are sequentially fixed to the moving table in the Y-axis direction, a bolt feeding machine is further fixed to the moving table, and a bolt feeding machine is arranged on the side, located on the main shaft, of the rack. The automatic feeding and discharging device has the advantages that a plurality of bar machining procedures can be achieved at a time, and feeding and discharging can be achieved automatically.

A CNC automatic feeding mechanism and continuous machining device for a medical product, and a machining method. A CNC automatic feeding mechanism (10) comprises a material container (11), a material distributing apparatus (12), and a material pushing apparatus (13). The material distributing apparatus (12) conveys bars in the material container (11) to the material pushing apparatus (13) one by one, and then an ejector pin (132) pushes the bars to a machining assembly (20), thereby achieving automatic feeding of the bars. A spring (133) is provided in the material pushing apparatus (13), preventing the machining assembly from being damaged due to different lengths of the bars. In a continuous machining device (100), a machining spindle (26) performs a machining operation on the bars, and finished products after completion of machining are collected by a finished product collecting assembly (40). A material pulling assembly (30) pulls out, by a predetermined length, a bar clamped in a second rotating shaft module (25), and the machining assembly (20) continues to perform a machining operation until the machining of the whole bar is completed. In a continuous machining method for a bar, the bar does not need to be cut into blanks, increasing the utilization rate of the bar, avoiding waste of raw materials, achieving continuous machining in a single setup, improving the machining precision and the production efficiency of products, and reducing a manual operation, thus improving the production efficiency and the operation safety.

The utility model discloses a full-automatic extruding and cutting integrated device for petuntse bars. The full-automatic extruding and cutting integrated device comprises a mixing box, the two transmission rotating shafts are rotatably mounted in the mixing box, and two rotating blades are fixedly connected to the outer sides of the transmission rotating shafts and used for pushing and extruding the pug downwards; the extrusion pipe is arranged in the mixing box, an extrusion screw rod is installed in the extrusion pipe, and an extrusion die head is installed at the discharging end of the extrusion pipe; the pug cutting device has the advantages that after cutting is completed, the clamping part can accurately clamp pug, the moving part enables the clamped pug to be stacked towards the cart on one side, manual operation is reduced, and production efficiency and safety are improved; the clamping plates are obliquely arranged, the two single-shaft air cylinders drive the clamping plates on the two sides to move towards the middle, pug can be clamped and fixed from the two sides, it is guaranteed that the pug cannot fall off in the carrying process, and the carrying accuracy is guaranteed.

The invention belongs to the field of hot forging technology forming, and relates to a forging forming method for a thin-wall semi-circular hoop type structural part. According to the invention, the thin-wall semicircular hoop type structural member with guaranteed internal and external quality is forged and produced in a forming mode of bar (or plate)-blank-blank-blank-die forging, wherein the blank is realized in a mode of bending the blank by using a special moulding bed.

The invention discloses a method for processing a pressure-resistant shell of an unmanned underwater vehicle, which relates to the technical field of underwater vehicles, and is technically characterized by comprising the following steps of: firstly, respectively forging a pipe material or a bar material, a cake material and a plate material by adopting titanium alloy, customizing raw materials, machining according to preset parameters, drilling, cleaning, and matching with radiographic inspection to complete processing of a shell, an end socket and a hoop; and the seal head also needs to be marked by laser. And in the assembling stage, an O-shaped sealing ring is arranged at the connecting part of the shell and the end socket for sealing, and a bulkhead of the cabin penetrating piece is fixed and assembled by using a hoop. Then, the vacuum degree change is monitored in a vacuum pressure maintaining mode to conduct air tightness detection, after qualification, a hydrostatic pressure test is adopted, step type pressure increasing is conducted according to preset pressure, the pressure is maintained to the specified time length, whether deformation and leakage occur or not is detected, finally, pressure-resistant shell machining is completed, the structural strength and sealing performance of the pressure-resistant shell are guaranteed, and the underwater use requirement is met.

The invention belongs to the technical field of bolt cutting machining, and particularly relates to cutting equipment for bolt production, which comprises a base, a conveying roller way is arranged on one side of the upper end face of the base, a bar conveying assembly is mounted in an inner cavity of the conveying roller way and used for conveying bars according to the length of produced bolts, and a recycling through groove is formed in one side of the upper end face of the base and used for recycling the bars according to the length of the produced bolts. The problems that an existing cutting mode is basically a point-to-point vertical or transverse moving cutting mode, the cutting resistance is large, the cutting efficiency is low during cutting, a cutting blade is prone to overload damage, and the cutting efficiency is high are solved. And in addition, a notch of the bolt blank needs to be polished by independently using polishing equipment subsequently, so that the production efficiency of the bolt is greatly influenced.

The invention provides a forming method of a novel low-cost titanium alloy material bottomed cylindrical rotary body part, which is a plastic forming method. Comprising the following steps that (1) a novel low-cost titanium alloy bar blank is subjected to die forging to form a preformed blank; (2) preheating the core mold before spinning; (3) the prefabricated blank is heated to the spinning temperature in a heating furnace or directly on a core mold to be subjected to spinning forming, and a lubricating agent is evenly smeared before spinning; (4) carrying out spinning forming on a spinning machine; (5) discharging and cooling after spinning forming; and (6) after spinning, a preformed part needs to be machined. According to the hot spinning forming method for the engine shell type part, the hot spinning forming process is adopted for replacing a bar machining process, the material utilization rate is increased, the manufacturing cost is reduced, the material performance is secondarily strengthened through the hot spinning process, the performance requirement for light weight of an engine shell is met, and the product quality is improved. And the produced economic benefits and social benefits are huge.

The invention relates to a full-automatic bar cutting production line and a working method thereof. A full-automatic bar cutting production line comprises a feeding device, the discharging end of the feeding device is connected with the feeding end of a conveying device through a transfer device, the discharging end of the conveying device is connected with the feeding end of a shearing device, and the discharging end of the shearing device is connected with the feeding end of a receiving device; the feeding device is used for storing workpieces and conveying the workpieces to the transfer device, the workpieces are sorted through the transfer device so that the workpieces can be conveyed to the conveying device one by one, the workpieces are continuously conveyed into the shearing device through the conveying device, the workpieces are sheared through the shearing device, and therefore products of the target length are obtained. And the product is discharged through the material receiving device. Full-automatic and high-precision cutting of metal bars can be achieved, so that workpieces can be cut in place at a time, the production efficiency is effectively improved, the cutting quality is improved, and the product consistency is guaranteed.

The utility model relates to the technical field of lathes, in particular to a high-precision deep hole machining lathe, and aims to solve the technical problems that when a lathe is used for machining deep holes, a supporting frame needs to be adopted for supporting, a bar is supported by manually rotating the supporting frame composed of a plurality of screws, and precision is low. The upper ends of the supporting legs are connected with a hollow disc, the hollow disc and the centering clamp are concentrically arranged, a plurality of rotating shafts are evenly and rotatably connected to the upper circumference of the hollow disc, the rotating shafts can be driven and locked through a driving device, the rotating shafts are connected with connecting rods, the tail ends of the connecting rods are rotatably connected with rolling wheels, and the distances from the circle center of each rolling wheel to the circle center of the hollow disc are equal. A bar is placed between the centering clamps and the rolling wheels in the hollow disc, the driving device drives the connecting rods evenly distributed on the circumference to rotate synchronously, the connecting rods drive the rolling wheels to rotate to clamp and center the bar, at the moment, the centering clamp located at one end is controlled to clamp the bar, and the automatic centering precision of the multiple connecting rods is very high.

The invention discloses a forging and heat treatment process for a single-row tapered roller bearing ring. Raw materials are sequentially subjected to cutting, forging, annealing, turning and heat treatment, and then the single-row tapered roller bearing ring is obtained. The hot-rolled polished bar is used as the raw material, so that the surface smoothness of the bar is ensured, no crack occurs during forging, and the yield of the material is improved; a secondary heating process is adopted after forging, it is guaranteed that the forge piece is in a reasonable temperature interval during rolling expansion, the phenomenon of rolling expansion cracks does not occur, and the product quality of the forge piece is guaranteed; the ash cooling process is adopted to replace slow cooling along with a furnace in an electric furnace, the process method is simple, practical and low in cost, and electric energy is saved on the premise that the quality of the forge piece is guaranteed; three-time preheating is adopted. The vacuum heating and heat conduction mode is radiation heating, and a repeated preheating mode is adopted, so that the ferrule in the furnace can be uniformly heated, the heating temperature is slowly increased, thermal stress in the ferrule can be reduced, and the quality of the quenched ferrule is ensured.

The utility model discloses a rear through stroke adjusting mechanism of a cold header, which comprises a die and an ejector rod, the ejector rod is aligned with an inner cavity of the die to do reciprocating linear guide telescopic motion, the rear through stroke adjusting mechanism further comprises a transmission swing arm, a driving swing arm and a reset mechanism, the driving swing arm is driven by an eccentric connecting rod and swings back and forth at a certain angle, and a guide push plate is mounted on the driving swing arm. The stress end of the transmission swing arm is provided with a supporting rod capable of being telescopically adjusted, the supporting rod is provided with a roller, the roller makes contact with the guide push plate, the impact end of the transmission swing arm is provided with an ejector pin, the end of the ejector pin makes contact with the tail end of the ejector rod, and the reset mechanism drives the transmission swing arm to reset so that the ejector pin can be away from the ejector rod. In this way, the ejection stroke of the rear through pipe can be adjusted, and therefore the forming requirements of bars of different specifications are met.

The invention relates to the technical field of pipe preparation, and particularly provides a small-caliber high-precision thin-wall GH738 pipe preparation method which comprises the following steps: step 1, obtaining a GH738 bar blank; secondly, the bar is machined into a GH738 pipe blank; 3, a semi-finished product GH738 pipe is obtained; 4, after the semi-finished GH738 pipe is cleaned, a finished product vacuum heat treatment procedure is conducted, and the structure and performance of the pipe are adjusted; step 5, rounding and straightening pretreatment; and 6, the small-size high-precision thin-wall GH738 pipe is obtained. The outer diameter is 5-8 mm, the outer diameter tolerance is-0.01--0.03 mm, the wall thickness is 0.5-1.0 mm, the wall thickness tolerance is + / -0.05 mm, and the straightness is smaller than 0.3 mm / m. The method has the advantages that the prepared small-size high-precision thin-wall GH738 pipe is higher in size precision, better in straightness, lower in surface residual stress and higher in eddy current flaw detection qualification rate, and the pipe yield is remarkably increased. And the preparation process is simple, has strong repeatability, is suitable for industrial large-scale production, and has wide popularization value and remarkable economic benefits.

The invention discloses a hard alloy high-strength nut shape machining device, and belongs to the technical field of high-strength fastener machining equipment. According to the longitudinal chamfering assembly, a first driving motor is used for driving chamfering hobs to rotate, three sets of chamfering hobs which are arranged at equal intervals can keep the hard alloy bar blank still, and the rotating chamfering hobs are used for conducting chamfering machining on the six edges of the hexagonal hard alloy bar. The annular chamfering assembly drives a rotating base to rotate through a second driving motor and is matched with an electric push cylinder to drive a lower sliding rack to move, and an annular chamfer is cut under the condition that a bar blank is fixed through a chamfering cutter installed on the lower sliding rack. Due to the arrangement of the clamping device and the clamping device, the shape of the bar blank can be machined under the condition that the bar blank does not rotate, and the bar blank does not need to rotate, so that the bar blank can be selected to be longer, the clamping frequency of the bar blank can be reduced in the machining process, and safety accidents caused by rotation of the bar blank are avoided.

The invention relates to friction stir deposition additive manufacturing equipment and a continuous feeding device and method thereof. The device comprises a stock bin, a first feeding cylinder, a second feeding cylinder, a push rod, a first feeding cylinder driving motor, a second feeding cylinder driving motor and a controller. A plurality of metal bars are stored in the stock bin, a bar outlet is formed in the bottom of the stock bin, and a vertical pushing arm is arranged on the top of the stock bin; the first feeding cylinder is initially located under the stock bin. The push rod is arranged right above the second feeding cylinder; the first feeding barrel driving motor and the second feeding barrel driving motor drive the first feeding barrel and the second feeding barrel to rotate around the axes of the first feeding barrel and the second feeding barrel correspondingly. The controller is used for controlling the metal bars in the stock bin to fall down; controlling the position interchange of the first feeding cylinder and the second feeding cylinder; the rotating speed and the phase of the first feeding cylinder or the second feeding cylinder are adjusted to be equal to the rotating speed and the phase of the rotating main shaft; and the first feeding barrel or the second feeding barrel is controlled to release the metal bar.

The invention relates to the technical field of forging, in particular to a step-by-step vertical forging forming method for a GH4169 alloy low-pressure turbine shaft part. A forge piece is designed according to the shape of the turbine shaft; the forge piece comprises a rod part and a head part which are coaxially arranged, the rod part and the head part 2 are connected through a transition area, and the diameter of the head part is larger than that of the rod part. Initial bar specifications are determined according to the rod part and the head part, and blanking is conducted; drawing out and forming the rod part; locally heating the head; and vertically upsetting the head. According to the method, the step-by-step forming process of drawing out the rod part through one time of heating and upsetting the head part through two times of heating is adopted, so that the heating number is effectively controlled, the repeated heating times are reduced, the production efficiency is improved, the consistency of overall deformation of the forge piece can be kept, and the problems of coarse grains and uneven structures caused by multiple times of heating are solved.

The utility model discloses a bar cutting positioning mechanism and aims to overcome the defect that accuracy of cutting length is affected due to the fact that the position of a bar is prone to deviation in the cutting process. The bar positioning device comprises a positioning baffle and a pressing block, the positioning baffle is connected with a transverse moving seat arranged in a transverse moving mode, the pressing block is arranged in a lifting moving mode, the transverse moving seat moves to drive the positioning baffle to move transversely, the end of a bar abuts against the positioning baffle, and the pressing block is pressed on the outer wall of the bar to position the bar. According to the bar cutting and positioning mechanism, the cutting length can be determined and the bar can be positioned before the bar is cut, the bar is not prone to deviation in the bar cutting process, and the accuracy of the cutting length of the bar is guaranteed.

The invention discloses a multi-shaft turn-milling composite numerical control machine tool, relates to the field of numerical control machine tools, and solves the problem that an existing turn-milling composite numerical control machine tool cannot machine two end faces of a bar at a time. The multi-shaft turn-milling composite numerical control machine tool comprises a box body and a base installed at the top of the box body, a machine tool shell is installed at the top of the base, and a turn-milling piece is installed on the inner side of the machine tool shell; two chucks are arranged at the top of the base, and three clamping jaws are mounted on the outer sides of the chucks; the position adjusting mechanism is used for carrying out end position changing on the bar between the two chucks, the position adjusting mechanism is installed at the top of the base, and the position adjusting mechanism comprises a rotary disc rotationally installed at the top of the base; through the position adjusting mechanism, the positions of the two chucks are replaced after the turn-milling piece machines the bar at one end, replacement of the end of the bar can be achieved, the two ends of the bar can be conveniently and rapidly machined, error accumulation caused by reinstallation is avoided, and therefore the bar machining accuracy is guaranteed.

The utility model relates to the technical field of copper bar machining, in particular to an adjustable copper bar cutting device which comprises a base, two sliding rails are symmetrically and fixedly installed at the top end of the base, sliding blocks are installed in the sliding rails in a sliding mode, limiting mechanisms are arranged at the top ends of the sliding blocks, connecting plates are fixedly installed on the sides, close to each other, of the sliding blocks, and the connecting plates are connected with the sliding rails. A rack is fixedly mounted on one side of the top end of the base. The copper bar cutting device has the beneficial effects that a stepping motor is matched with a driving wheel, a synchronous belt and a driven wheel to drive a threaded rod to rotate synchronously, then a sliding block can be driven to move in a sliding rail until a copper bar in a limiting mechanism moves to the lower portion of a cutting piece, a transverse moving mechanism can drive the cut copper bar to reset, automatic feeding and discharging are achieved, the automation degree is high, and the cutting efficiency is high. Copper bars can be fully automatically fed and cut, the manual operation time is greatly shortened, the working intensity is reduced, meanwhile, workers are prevented from getting close to a cutting piece, and the safety is improved.