The method of manufacturing lanero
(57) Abstract:Usage: metal forming, in particular, the processing by cold plastic deformation. The inventive make the two parts of the tube and a shell made of materials with different elasticity limit. Collect the mentioned items by installing pipes in the shell gap. After Assembly, plastic deformation is subjected to a part made from metal with a lower limit of elasticity. 2 Il. The invention relates to a cold metal plastic deformation and can be used, for example, for the manufacture of lanero cylinder rod oil pump.A known method of manufacturing lanero, according to which a thin tube is inserted into the shell gap  Between the outer surface of the pipe and the inner surface of the shell there is a gap.The shortcoming of the above method is the existence of a gap between the pipe and shell, resulting in lower stiffness of the liner, and in some cases, for example, in the manufacture of cylinder oil pumps from lanero, the gap significantly reduces the quality of the subsequent operation of hardening the inner surface is put on the pipe surface and the inner surface of the shell is made conical 
The disadvantage of the method described above is that it is difficult to implement. The difficulty is making the mating surfaces for strictly required to agree odnoosnoi conical inner surface of the shell with a conical outer surface of the pipe.Also known a method of manufacturing lanero, whereby after Assembly of the tube shell with some clearance on mating surfaces, the liner is subjected to avtomatizovani (see page 38)  i.e., plastic deformation of the pipe in order to eliminate the gap between the pipe and shell, and the simultaneous hardening of the pipe.A disadvantage of the known methods of producing laserow is that when the bond of lanero by plastic deformation of one of the parts of the liner (shell and tubes), are not taken into account mechanical properties of metals that are not capable of providing high-quality, backlash-free fastening of the pipe with the shell and, consequently, leads to a low quality product as a whole.For example, in the manufacture of cylinder oil boom pumps from bonded lanero, where the pipe is made of high-alloyed nitriding steels, and the shell of nizkouglerodistuyu the normal course of the nitriding process, resulting in dramatically increasing nitriding time and reduces the quality of nitriding the surface of the cylinder and the pump as a whole.The objective of the invention is to develop a method of making lanero providing high quality gapless connection pipe with the shell and stiffening liner.This technical result is achieved in that in the manufacture of the liner, including the manufacture of the two parts of the pipe and shell and assemble them with each other with a gap, according to the invention the plastic deformation is subjected to a part made from metal with a lower limit of elasticity.The result of solving the problem is that when exposed to a part made from metal with a lower limit of elasticity through it we work on the item with a great elasticity limit.After removal of the load items with a lower limit of elasticity remain residual plastic deformation, and the detail with great elasticity limit will take its original dimensions and bassethorn lie down to the mating surface of the elastic part.In Fig. 1 shows the method of connection of the liner, in which the shell is made of metb connection of the liner, in which the shell is made of metal with a large limit of elasticity, and the tube is made of metal with a lower limit of elasticity. The liner is made as follows.Originally made shell 1. After measuring the inner diameter of the shell 1 is treated on the outer surface of the pipe 2, thereby guarantee the clearance between the mating surfaces. After Assembly of the shell 1 with the pipe 2, the liner is fed to the bonding operation. The fastening is effected by deformation of one of the mating parts of the shell 1 or tube 2. The deformation can be performed using high pressure liquid, gases, by way of forging, rolling, burnishing or other methods.In Fig.1 shows one possible bonding of the liner, in which the shell 1 is made of a metal with a lower limit of elasticity, and the pipe 2 made of metal with a large modulus. In the case of plastic deformation is subjected to the shell 1. For this purpose, metal cutting equipment, for example, horizontal boring machine, swivel the workpiece headstock, along the axis of the machine set obkatkoj tool with deforming rollers 3. The stem of the machine install the mandrel 4, kenise outer diameter of the shell (the size by deforming rollers is determined experimentally, depending on the diameter of the liner, the thickness of the shell 1 and the pipe 2 and the mechanical properties of the metal) rescatame instrument reported rotational movement of the V, and the liner progressive S, perform the plastic deformation of the shell 1 and the elastic deformation of the pipe 2.Due to the different mechanical properties of the metal shell 1 and the pipe 2 in the shell happens to plastic deformation, causing the outer and inner diameters will decrease and the pipe 2 will happen elastic deformation, where after removing the load, the parameters of the tube will return to its original position, thus, there will be backlash-free and high-quality bond liner.In Fig. 2 depicts one possible binding lanero, in which the shell 1 is made of metal with a large limit of elasticity, and the pipe 2 made of metal with a lower limit of elasticity.A liner mounted on the broaching machine with emphasis in fixture 6 one of the ends. The hole in the pipe 2 being the mandrel 7, the output of which screw the mandrel 8. The mandrel outside diameter is made to be larger than the size of the inner diameter of the pipe 2. The magnitude of the tension mandrel 8 in the bore of the pipe 2, as in the previous case, opredelaetsa is rmatio shell 1, leading to a backlash-free and high-quality bonding of the shell 1 with the pipe 2, as in the previous case. The method of manufacturing lanero, including the manufacture of pipes and shell Assembly with each other by setting the tubes in the shell gap and the subsequent plastic deformation of one of the assembled parts, characterized in that the tube and shell are made of metals with different modulus and plastic deformation is subjected to a part made from metal with a lower limit of elasticity.
FIELD: plastic working of metal.
SUBSTANCE: clamping-tool device 29 in the form of tongs for placing mechanic fixing organs includes first member for placing, limiting and (or) measuring path portion, length or distance at arranging fixing organ; second member for placing, limiting and (or) measuring at least one component of effort created at moving or overcoming path portion in fixing organ or by means of fixing organ.
EFFECT: enhanced quality of assembling process.
9 cl, 9 dwg
FIELD: machine engineering, namely joining of constructional members of articles, for example flexible members and tips.
SUBSTANCE: method comprises steps of changing shape and size at least of one of joined members at using forces of interaction of electromagnetic fields of electric currents to be passed through electric current lead. Shape and size of joined members are changed due to moving movable members of shaping tool by action of forces caused at direct interaction of electromagnetic fields of electric currents. On portions of electric current lead turned to movable members of shaping tool electric current are passed in one direction while moving said portions together with movable members of tool. On portions of electric current lead remote from movable members electric currents are passed in opposite direction and motion of said portions is limited by means of restriction members.
EFFECT: enhanced efficiency of process, lowered energy consumption of used equipment.
FIELD: ventilation and air conditioning.
SUBSTANCE: connection by tight folded seam of two flexible metal pipes, sections of pipelines, segments or elbows of pipes used to transmit flows of gas is provided with double fold in form of flange at end of first pipe enclosed by second double fold made on end of second pipe at least with partial adjoining to shape and provision of enclosing solid metal sealing. Connection is formed by outward flanging universal bending or edging machine provided with forming rolls installed for rotation and feed rolls installed fro displacement in one plane. Said rolls are set into motion by motor and project from machine table. At first stage of operation double in form of flange is made on end of first pipe, and at second stage, step member is formed on end of other connected pipe. Width of step member exceeds size of double bend in form of flange. At third stage member is driven over double bend and projecting part of step member is pressed tightly to double bend with enclosing of bent and provision of sealing. Shifted lower roll of device is made in form of hollow shaft accommodating drive shaft carrying axially secured forming roll. Feed roll is made in form of hollow shaft which accommodates drive shaft carrying upper shifted forming roll. Feed roll and lower are mounted in slides to provide synchronous displacement. Rolls are also installed in slides for displacement in direction of axially secured forming roll and shifted lower roll.
EFFECT: provision of high tightness of connection.
4 cl, 11 dwg
FIELD: plastic metal working, possibly in crimping machines.
SUBSTANCE: crimping die set and coupling are used for holding worked part in crimping machine. Coupling is placed onto worked part with possibility of unclamping and it has fist clamping portion and second clamping portion mutually joined through hinge. Crimping die set may be inserted to crimping machine. Said die set has groove for worked part and recess for coupling on its working surface. Recess for coupling has configuration necessary for holding coupling in it. In order to crimp part in crimping machine, coupling is arranged around part in predetermined position and then it is tightened around part. Coupling and article are inserted into recess for coupling and groove for article respectively in crimping die set. Then die set with coupling and article is placed into crimping machine.
EFFECT: enhanced efficiency and reliability of crimping process.
13 cl, 6 dwg
FIELD: plastic working of metals, namely processes for forming butt welded seams on tubes at making tube studs of U-shaped tube bundles using effect of localized hot plastic deforming of welded seam and near-seam zones.
SUBSTANCE: method comprises steps of preliminarily working tube ends by expanding them from cylinder to cylinder; assembling tubes with use of mandrel and placing intermediate member of additive material between joined end surfaces of end portions of tubes sized by expansion and end surfaces of step ring. Welded seams are formed by argon-arc welding due to melting material of intermediate member at its both sides adjacent to tube ends. The intermediate member is heated up and it is subjected to hot radial squeezing while concentrating its initial deformation in surface layers according to position of ring steps, welded seams and near-seam zones on mandrel for providing size of their outer diameter equal to initial outer diameter of tubes.
EFFECT: improved quality of welded seams.
FIELD: welding jobs.
SUBSTANCE: invention relates to the methods of preparing the ends of pipes with inner polymer coating for welding, and can be used in repair of pipelines. The proposed method consists in the following. A tip with a rubber seal ring is fitted into the pipe with inner polymer coat, the aforesaid seal ring being place on pre-compressed smaller-diameter tip part, some 150 to 200 mm-long. Then using a mandrel, the aforesaid smaller-diameter part is expanded for the pipes ends sizes and shapes to match.
EFFECT: sealing of welded pipes, simpler procedure.
SUBSTANCE: invention relates to pressure materials processing with usage of energy of electric explosion of metallic conductor in liquid transfer medium and relates, particularly deformation and piercing of pipes of wide range of configuration and geometry in out-of-the-way places. Pipe is installed into opening of tube plate, it is located at the end of pipe pre-assembled structure, consisting of exploding element in the form of ring made of foil, located at the butt of strength cylinder made of dielectric, allowing through co-axial opening, in which it is located rod electrode, connected by electric contact to central part of ring made of foil. It is used the second electrode in the form of clenching metallic bushing, located at cylinder from the condition of providing of fixation on its side surface of peripheral part of ring, connected to rod electrode and bearing on centering insulating chain gears of core insert with installed on it director cone and figure of revolution, implemented of strong material. It is implemented location of figure of revolution and director cone of mentioned structure in area of pipe straining filling of pipe cavity by transfer medium, waterproofing of pipe by flexible plug of one butt and washer of the other, implementation of electric explosion of explosion element. Additionally in used pre-assembled structure of ring surface made of foil are implemented with profile by hyperbolic function, of thickness, increasing partly. Core insert is connected to rod electrode by means of filler, reinforced by metallic conductors, allowing at side surface symmetric longitudinal stringers, external diametre of which is equal to inner diametre of pipe.
EFFECT: there are increased method efficiency and coefficient of efficiency.
6 dwg, 1 ex
SUBSTANCE: invention relates to field of materials pressure processing with usage of electric explosion energy of metallic conductor in liquid transmission medium and relates particularly, deformation and insertion of pipes of wide range of configurations and geometry in out-of-the-way place. Pipe is installed into opening of tube plate, it is located in the end of pipe pre-assembled structure, consisting exploding element in the form of ring made of foil, located at butt of strength cylinder made of dielectric, allowing through co-axial opening, in which rod electrode, connected to electric contact with central part of ring of foil. It is used the second electrode in the form of cogging metallic bushing, located in the cylinder for the condition of providing of fixations at its side surface of peripheral part of ring, connected to rod electrode and supporting on centering insulating chain gears of core insert with installed on it guiding cone and body of revolution, implemented from strength material. There is implemented location solid of revolution and director cone of mentioned structure in area of pipe straining, filling of pipe cavity by transmitting medium, waterproofing of pipe by flexible cork of one butt and ring insertion of other, implementation of electric explosion of exploding element. Herewith in used preframed structure of ring surface from foil are implemented with profile by hyperbolic function, thickness, increasing from peripheral to central part, metallic bushing is implemented with inner clamp at the end, core insert allows length, equal to length of solid of revolution and director cone with centering gear and connected to rod electrode by means of rubber cord, reinforced by metallic strand, diametre of which is equal to inner diametre of ring.
EFFECT: there are increased effectiveness of method and coefficient of efficiency.
6 dwg, 1 ex