287 results about "Broaching" patented technology

The invention relates to the technical field of metal material deformation heat treatment processes and discloses a process method for improving the comprehensive mechanical property of a 2219 aluminum alloy ring piece so that coarse residual crystalline phases of the large-size 2219 aluminum alloy ring piece can be fully crushed and crystalline grains can be refined and equiaxed, thus, the strength and the plasticity of the 2219 aluminum alloy ring piece are improved at the same time, and the anisotropy is decreased. The process method comprises the steps of multi-directional forging, punching, mandrel supporter broaching, piecewise rolling and heat treatment. In the multi-directional forging step, the heating temperature of a blank is 500 DEG C-520 DEG C, and the final forging temperature is higher than or equal to 380 DEG C. Piecewise rolling comprises the steps that in the first stage, the ring blank is heated to 420 DEG C-460 DEG C and subjected to hot rolling on a ring rolling machine, and the hot rolling deformation quantity is 30%-40%; and in the second stage, the ring piece subjected to hot rolling is air-cooled to 240 DEG C-280 DEG C and is continuously subjected to medium and low temperature rolling on the ring rolling machine, and the deformation quantity is 15%-25%.

The invention discloses a manufacture technique of tap shells for polar drill rigs. The manufacture technique incudes: (1) for forging, performing forging via upsetting, punching, broaching and forming to guarantee a forging fiber flow line under the conditions that heating temperature is 1270-1310 DEG C, initial forging temperature is 1100-1250 DEG C and terminal temperature is not lower than 850 DEG C, performing annealing after forging under the condition that the heating temperature is 880+/-20 DEG C, and performing furnace cooling to enable tapping temperature not higher than 300 DEG C; (2) for heat treatment, normalizing at temperature of 880-900 DEG C prior to air cooling, quenching at temperature of 840-860 DEG C prior to oil cooling or cooling with a PAG quenching medium, tempering at temperature of 580+/-40 DEG C prior to air cooling, performing subcritical quenching at temperature of 790+/-10 DEG C prior to oil cooling or cooling with the PAG quenching medium, and tempering at temperature of 520-600 DEG C prior to air cooling; (3) for non-destructive inspection, finishing prior to machining a product according to size, and performing ultrasonic inspection and magnetic particle inspection, wherein the qualified level conforms to API Specification 8C standards. Compared with the prior art, the manufacture technique has the advantages that the tap shells manufactured with the technique have high strength to guarantee enough safety factor, adapt to polar regions (at the temperature of minus 60 DEG C) and meet the requirement on enough low temperature impact toughness so as to resist to the low-temperature environment of the polar regions.

The invention discloses a special-shaped hole machining method and a special-shaped hole and relates to the technical field of laser machining. According to the method, femtosecond or picosecond or nanosecond pulse laser is adopted, and a mode completely based on scanning galvanometer filling machining is provided. The method comprises the steps that firstly, a through hole smaller than the hole diameter requirement is machined so that gasification objects and fusion objects formed in the machining process can be discharged and re-coagulation objects are prevented from depositing; then, roughmachining of a special-shaped hole diffusion section is conducted; then, the laser focusing position is adjusted, broaching is conducted on the basis of a dust discharge through hole, and a cylindrical through hole meeting the hole diameter requirement is machined; and finally, the focus position is precisely adjusted, and the diffusion section is machined layer by layer. By means of the special-shaped hole machining method and the special-shaped hole, heat-induced defects such as recasting layers, microcracks, coating collapse and the like generated in the process that in the prior art, a special-shaped hole is machined, and in particular, the special-shaped hole is machined in a workpiece with the surface coated with a thermal barrier coating are avoided; and in addition, the shape and dimension precision of the special-shaped hole are improved.

The invention provides a gear ring support machining technique. The machining technique comprises the following steps of (1) blank detection, (2) rough turning, (3), tempering and shot blasting, (4) semi-extractive turning, (5) quenching, (6) gear broaching, (7) large end face and groove turning, (8) hole drilling and notch milling, (9) hobbing, (10) orifice chamfering, and (11) cleaning and packaging. The machining technique of an inner gear ring is simple in procedure, the hardness of an obtained gear ring support is high and can reach 700-850 HV, the effective hardness depth can reach 0.50 mm, the precision is high, and the abrasion resistance is good.

The invention relates to an extruding molding method of an austenitic stainless steel seamless pipe for a hydrogenation cracking furnace. The method comprises the following steps of I, preparing a pipe blank, wherein the specification of the pipe blank is phi250mm to 450mm, and a central through hole is phi40mm to 100mm; II, preheating the pipe blank, wherein the temperature of the furnace when the pipe blank enters a furnace mouth is 750 DEG C plus or minus 10 DEG C, the target temperature of an annular furnace is 1000 DEG C plus or minus 10 DEG C, a heat homogenizing time lasts for 25min to 30min, the surface temperature of the pipe blank when the pipe blank is discharged from the furnace is 1000 DEG C plus or minus 10 DEG C; III, primarily heating in an induction manner, wherein the target induction temperature is 1150 DEG C plus or minus 10 DEG C, and the total time of the heating and heat preserving lasts for 3min to 5min; IV, broaching, namely, placing the pipe blank after being lubricated by glass powder into a broaching machine, and completing the broaching by utilizing a broaching cone; V, secondarily heating in the induction manner, wherein the pipe blank enters a second induction furnace, the target temperature is 1200 DEG C plus or minus 10 DEG C, and heat homogenizing time lasts for 1min to 2min; VI, extruding, namely, preheating an extrusion tube to be more than 300 DEG C, placing the pipe blank into an extruder after being lubricated by the glass powder, and performing water cooling on the pipe blank after the extrusion is completed. By adopting the extruding molding method of the stainless steel pipe, the thermoplasticity is good in molding, and a crack hard to occur in the heating machining process.

The invention provides formed reinforced complex phase steel, and belongs to the field of cold-rolled ultrahigh-strength steel production and manufacturing. The formed reinforced complex phase steel is prepared from the chemical components including, by mass, 0.17%-0.21% of C, 0.2%-0.7% of Si, 1.8%-2.5% of Mn, less than or equal to 0.01% of P, less than or equal to 0.005% of S, 0.4%-0.8% of Al, 0.1%-0.39% of Cr, 0.02%-0.04% of Nb, at least one of 0.01%-0.04% of Ti and 0.03%-0.1% of Cu, and the balance Fe. The tensile strength of the complex phase steel is higher than 980 MPa, and meanwhile, the complex phase steel has good broaching performance and forming performance and is particularly applicable to automobile parts which have flanging and broaching design and need certain forming capacity. The invention further provides a preparation method of the formed reinforced complex phase steel.

The invention relates to an axial force controllable surgical bone drill with a stepped bit. The axial force controllable surgical bone drill with the stepped bit is high in control precision and capable of effectively preventing injury to brain tissues, and comprises a drill body and the bit, a direct-current motor is arranged in a casing of the drill body and is connected with an intelligent integrated control system and a direct-current power supply, an output shaft of the direct-current motor is connected with a gear transmission device which is connected with a drill chuck through a transmission shaft, and the bit is mounted on the drill chuck. A thrust bearing is arranged at the joint of the drill chuck and the transmission shaft and clings to a deformation element, the deformation element is closely attached onto the casing and is positioned by an elastic element, a resistance strain gauge is adhered to the inner surface of the deformation element and is further connected with the intelligent integrated control system, and a sealing device is arranged between the drill chuck and the casing. A first portion of the bit is a guide portion, a twist drill serves as a bit body, a second portion of the bit is a transition portion, a third portion is a broaching portion, and diamond grains are arranged on spiral surfaces of the transition portion and the broaching portion.

The present invention discloses a method for machining valve hole by simultaneously adopting reaming and extruding processes. Said method process includes broaching-semifinishing boring-reaming and extruding hole; selecting cutting parameters (cutting speed Vc=5.9m/min, feeding rate f=0.084mm/r and cutting depth ap=0.1mm) and extrusion quantity (0.01-0.02mm). the broaching process adopts broaching cutter, semi-finishing boring process adopts boring cutter with two edges and reaming-extruding process adopts reaming-extruding cutter.

The invention discloses a radius highly synchronous and precise broaching processing method for double bearing bushes and an automation device on the basis of the method. The processing method comprises processes of automatic loading and feeding, clamping and positioning and broaching processing of the bearing bushes; before the clamping and positioning process, a floating preset positioning process of the double bearing bushes is added; and in the clamping and positioning process, a full floating structure clamping seat and two elastic-expansion three-point positioning pressure heads are adopted. According to the automation device, the technical difficult problem of simultaneously clamping and positioning the double bearing bushes is solved; the processing efficiency is improved; and the automation device has high precision degree and good safety performance.

The invention relate to a processing technology for a plate hub of a driven plate assembly. The plate hub comprises a plate hub sheet and a plate hub core, wherein the plate hub sheet is formed by processing steel plates through material shearing, punching, leveling and thermal treatment; the plate hub core is formed by processing blank plate hub core materials through surface turning, groove lathing, gear punching and thermal refining; then the plate hub cores form an integral body through assembling and riveting treatment; after inner hole turning, shot blasting, spline broaching and rust prevention treatment, the whole processing procedure of the plate hub is completed, and the finished product plate hub is produced. A mould component adopted in the processing technology comprises a lower mould template, an upper mould and an upper mould template, wherein a lower mould universal female seat is mounted on the lower mould template; and a work lower mould is mounted in the lower mould universal female seat. For the processing technology, the machining allowance is small, the material utilization ratio is high, the verticality of the plate hub is guaranteed, the production efficiency is improved, and the performance requirement on deflection of the driven plate assembly is met, so that the torsion property is more stable. Due to the adoption of the universal female seat, the mode that specific work components are replaced is adopted, so that the use requirements of different products on the mould are met, the mould replacement time is prolonged, the number of moulds is reduced, and the manufacturing and managing costs of the mould are reduced.

The invention discloses a self-tangency broaching anchor bolt comprising a sleeve, wherein the lower end of the sleeve is provided with an expansion structure, the upper end of the sleeve is provided with a clamp groove which is embedded with an installing tool, the expansion structure comprises a plurality of expansion pieces, the lower end of the expansion structure is provided with a milling structure, the milling structure comprises a plurality of cutter teeth which are peripherally and evenly distributed around the axis of the sleeve, one sides, which face to a sleeve rotating direction, of the cutter teeth are provided with cutting edges, the cutting edges are slantwise arranged opposite to the end face of the sleeve, and the bottom ends of the cutting edges are convex towards the sleeve rotating direction; and the cutter teeth are directly machined by the lower end of the expansion structure, a hard material wear layer is arranged on the working faces of the cutter teeth or the cutting edges are provided with hard alloy blocks, or the cutter teeth are wholly formed by the hard alloy and are fixed at the lower end of the expansion structure. The self-tangency broaching anchor bolt uses the milling principle of a milling cutter, so that the cutting edges are matched with the hard alloy or hard material wear layer, therefore, the transverse and lengthways milling performance can be greatly improved when the anchor bolt is expanded.

The invention discloses a gear broaching key positioning fixture. By the adoption of the gear broaching key positioning fixture, the precision of a key groove can be guaranteed, and the angle between the key groove and teeth can reach the standard. According to the technical scheme, the left end of a fixture body (1) of the gear broaching key positioning fixture is connected with a horizontal broaching machine, and a mandrel at the right end of the fixture body (1) is matched with an inner hole of a gear (4); a guiding body (2) is connected and clamped to the fixture body (1) through screws (7) and positioning pins (8), grooves are formed in the middle of the fixture body (1) and in the middle of the guiding body (2), and a broaching tool (5) reciprocates along the grooves to machine the gear; a positioner (3) is installed on the fixture body (1), the position where the positioner (3) is fixed is adjusted according to the angle of a gear which is machined firstly until the angle between the key groove (6) and a marking tooth (9) is within the range of +/-10 minutes, and then the positoiner (3) is tightened. The gear broaching key positioning fixture has the advantages that the manufacturing cost is low, and using is easy and convenient; readjustment is not needed after adjustment is conducted once, and the stability is high; the gear can be assembled and disassembled conveniently, rapidly and efficiently, and the average time for assembling or disassembling a part is only five seconds.

The invention discloses an automatic forging system and method for annular gear blanks. The system comprises a sawing machine, a medium-frequency induction heating furnace (2), a robot (3), an annularpiece multi-station blank manufacturing servo hydraulic machine (4), a numerical control ring rolling machine (6) and a screw press (7) which are connected in sequence. The annular piece multi-station blank manufacturing servo hydraulic machine (4) is provided with a first station, a second station and a third station, wherein the first station is used for conducting upsetting treatment on a bar,the second station is used for conducting blind hole extrusion treatment on the bar subjected to upsetting treatment, and the third station is used for conducting punching on the blank subjected to blind hole extrusion treatment; and a gear blank can be obtained after ring rolling, broaching and die forging are conducted. With the system and method adopted, a large number of unqualified productsare avoided, and meanwhile, harm of high temperature to human bodies during traditional manual detection is avoided; full-automatic control over discharging, heating, multi-station blank manufacturing, broaching, pre-forging, finish forging and size detection is achieved; and unmanned and intelligent gear forging production is achieved.

The invention relates to a method for forming a L80-13Cr martensitic stainless steel seamless steel tube. The process comprises the steps that 1, a 13Cr continuous casting billet is adopted; 2, the continuous casting billet is annealed; 3, the outer circle of the continuous casting billet is subjected to unilateral machining, and an outer surface oxide skin and a center loose layer are removed; 4,the treated continuous casting billet is uniformly heated to 1100 DEG C-1150 DEG C, and hot broaching is conducted; 5, hot extrusion is conducted on the continuous casting billet obtained after hot broaching; and 6, the hot-extruded steel tube is subjected to heat treatment to obtain the finished stainless steel seamless steel tube. According to the method, the continuous casting billet and hot extrusion forming process is combined, the problem that an existing production process is long in process flow and low in yield is solved, riser losses are reduced, the forging process is omitted, theyield of the martensitic stainless steel seamless steel tube can be increased, and the production cost is reduced.

The invention relates to an external broaching device, in particular to an injection-molded flange gasket groove-spinning external-broaching device. The invention aims to provide the injection-moldedflange gasket groove-spinning external-broaching device with safety, less effort and high production output. The invention provides the technical implementation plan that the injection-molded flange gasket groove-spinning external-broaching device comprises a lower bracket, support rods I, an upper bracket, support rods II, an installation plate I, an intermittent mechanism and the like, wherein the four support rods I are fixedly connected to the lower bracket; the upper bracket is fixedly connected to the support rods I; the four support rods II are fixedly connected to the upper bracket; and the installation plate I is fixedly connected to the support rods II. According to the injection-molded flange gasket groove-spinning external-broaching device provided by the invention, through a clamping mechanism, the production output is improved; and through the intermittent mechanism, a rotary table and a groove-spinning mechanism, the effect on intermittently and automatically groove-spinning external-broaching the flange gasket can be achieved.

The invention discloses a mortise broaching process simulation analysis method based on thermal force flow multi-field coupling. The method comprises the steps of creating a broaching thermal force model according to the sizes of a cutter and a workpiece, material related parameters, cutting related parameters and heat conduction characteristics, and making analog simulation; establishing a broaching heat flow model according to the cooling related parameters of the cutter, the workpiece and the cooling liquid, and performing analog simulation; and coupling the simulation results of the broaching thermal force model and the broaching thermal flow model to obtain a broaching thermal force flow multi-field coupling model, and simulating the cooling effect of the cooling liquid on the workpiece, the cutter and the cuttings in the broaching process. The thermal force and thermal flow simulation analysis model in the broaching process is established, a data transmission platform among the models is established, coupling simulation analysis among three fields of broaching thermal force flow is achieved, the flow speed, temperature and impact pressure of cooling liquid are fully considered, and simulation precision is greatly improved.

The invention provides electrolysis-broaching combined machining tool electrodes and belongs to the technical field of special machining. According to the electrolysis-broaching combined machining tool electrodes, the structure is novel; through addition of insulating partition plates, an insulating pad and an insulating sleeve and implementation of insulation on electrolyte flow channel walls inside a cutter body, insulation of broach blades and porous metal electrodes is achieved, and the electrochemical machining process and the mechanical broaching machining process are guaranteed not to interfere with each other; and a porous metal material is adopted as the electrochemical machining electrode material, the problem that when external liquid spraying is conducted and a cutter cuts intoa workpiece, liquid feeding in the electrochemical machining process is insufficient is avoided, and the problem that corrosion of the workpiece surface material is not uniform when internal liquid spraying is conducted is also avoided. The broach blades and the porous material electrodes are designed to be in a split disassembling and assembling type; and when parts with different outlines and shapes are machined, the broach blades and the porous material electrodes can be replaced rapidly, and the advantages of high applicability and low comprehensive cost are realized.