Apparatus for rolling around helical surface of round shape

FIELD: mechanical working of metals, namely apparatuses for rolling around round shapes such as helical grooves of shells of rope drums of cargo hoisting machines.

SUBSTANCE: apparatus includes supporting member in the form of disc and indenters arranged along its circle and provided with device for mounting them. Indenters are in the form of balls whose radiuses are equal to radiuses of rolled around profile of helical surface and they are arranged in semi-spherical jackets radially placed on disc. Centers of said indenters in the form of balls are spaced from vertical rotation axis of disc by distance equal to radius of pitch circle of disc and with pitch equal to that of helical line of rolled around helical surface. Radius of pitch circle of disc is determined according to given formula. It is possible to roll around helical surfaces with radius of round shape less than 35 mm.

EFFECT: enlarged manufacturing possibilities of apparatus, lowered roughness of surface.

2 dwg

 

The invention relates to the machining of metals, namely, devices for implementing the circular profile, for example, spiral grooves on the shells of the cable drum lifting machines.

Known methods of influence on the surface layer parts, which are based on the deformation of the rotating indenter (Ermakov, Y.M., Ershov A.A. Trends designs instruments for surface-hardening treatment. M., 1987. 44 S., 22 ill. Technology, equipment, organization and Economics of machine-building production. Ser. Cutting tool: Overview / VNIIEM; issue 1).

Known mnogovendornoy device for envelope break-spiral surfaces (Technology machining and Assembly. Proceedings Of Nitemare Uralmashzavod. VIP "Production of large machines. Edited by Kida. technology. Sciences Vmmirlpscpe. M: mechanical engineering, 1976, p.137-161). This configuration provides the run-helical surface only with a rectilinear profile.

The closest in technical essence to the present invention is a device for running streams drum (Braslavsky VM Technology running large parts of the rollers. M: mechanical engineering, 1975, s-131). The device includes a support element in the form of rotation of a body with spaced on the circumference of indenture and services is a device for attaching them. The design of the device cannot be used for rolling of helical surfaces with the radius of the circular profile of less than 35 mm due to the strength of the support element.

The disadvantages of this device is the inability to simultaneously run multiple spiral surfaces, and narrowed the technological capabilities limited by obtaining the roughness of the rolled surface is not below Ra=0.8 μm and running spiral surfaces with the radius of the circular profile of at least 35 mm

The invention is aimed at expanding the technological capabilities of the device, providing: the achievement of lesser roughness absatively surface; the ability to run spiral surfaces with the radius of the circular profile of less than 35 mm; simultaneous break-all calls multiple spiral surfaces.

This object is achieved in that the device containing the reference element in the form of a body of rotation located on the circumference of indenture and device for attaching them, according to the invention the support element is designed in the form of a disc, and indenture have the shape of a sphere with radius equal to the radius obkatyvaem circular profile helical surface, and placed in the hemispherical recesses radially arranged on the disk, being the m centers of ball indenters are located at a distance from the vertical axis of rotation of the disk, equal to the radius of the starting circle drive with a step equal to the step helix absatively helical surface, and the radius of the starting circle of the disk is determined from the formula

where t is the step helix absatively helical surface, mm;

zu- the number of indenters.

The invention is illustrated by drawings, where figure 1 shows a device for implementing the helical surface of the circular profile;

figure 2 - the same, top view.

The device for implementing the helical surface of the circular profile contains the disk 1, which is uniformly performed radially spaced recesses 2 a hemispherical shape. In the recesses 2 posted by ball indentor 3.

The centers of ball indenters are located at a distance from the vertical axis of rotation of the disk equal to the radius of the starting circle drive r defined by the formulawith the district step T, equal step t helix absatively screw surface. Indenture enshrined in the disk by means of the separator 4 and screws 5. In the disk made a hole 6 for fixing the device on the tool spindle of the machine tool when it is used in the work. The opening 6 may have a different design depending on the shape of the mounting surface of the tool spindle of the tank.

Design installation indenters in the recesses of the disk may have other options, for example, in the cavity between indenture and hemispherical surface of the recess may be located intermediate the supporting elements in the form of balls of smaller diameter than the indenter, or washer made of antifriction material.

The device for implementing the helical surface of the circular profile is as follows. The assembled device is fixed on the tool spindle and is positioned so that the ball indenter in contact with a corresponding force profile absatively screw surface. The device provides means for forming, based on the principle of diffraction. Run the screw surface is at a constant distance between the axis of the workpiece (not shown) and a vertical axis of rotation of the device, starting at the circumference of the disk rolls without sliding on the initial straight part. In the process of running the part is rotated around its axis, and the device receives the complex motion of a feed consisting of its rotation around its axis and simultaneously rectilinearly-and-forth motion, while the rotation and rectilinear translational movement of the device must be kinematically associated with the rotation of absatively details in the circle on its axis, what can be done with the help of devices by RF patent No. 2253545, IPC WV 5/48. The combination of complex movements of the feeding device for running and rotating the workpiece; the geometric parameters of the profile of the indenter and the parameters of their location in the reference element device - disk - allow running the helical surface of the circular profile.

The proposed device equipped with a support element in the form of a disc with radially located on the recessed hemispherical shape, ball indenture, and formed the basis of its design method of forming, based on the principle of diffraction allow simultaneous processing of all calls multiple spiral surfaces, increase the range in the direction of decreasing radius absitively profiles of screw surfaces and reduce the roughness of the rolled coil surface to Ra=0.2 μm.

The fact of obtaining a less rough surface due to the specific features of the work of ball indenters (Papsi SHOSTAKOVICH Finishing-hardening treatment by surface plastic deformation. M.: Mashinostroenie, 1978, p.7).

The device for implementing the helical surface of the circular profile, containing supporting element in the form of a body of rotation located on the circumference of indenture and trojstvo to fix them, characterized in that the supporting element is designed in the form of a disc, and indenture - in the form of a sphere with radius equal to the radius obkatyvaem profile helical surface, and placed in the hemispherical recesses, radially arranged on the drive, and the centers mentioned indenters in the form of a sphere located at a distance from the vertical axis of rotation of the disk equal to the radius of the starting circle of the disk r, and increments the step helix absatively helical surface t, mm, r=t·zu/2πwhere zu- the number of indenters in the form of a sphere.



 

Same patents:

FIELD: manufacturing processes in machine engineering, namely combination method for diamond -abrasive and finish-strengthening working of blanks of steels and alloys by surface plastic deforming.

SUBSTANCE: method comprises steps of diamond-abrasive working and simultaneous surface plastic deforming of blank by means of combination tool. The last is in the form of mandrel in which diamond-abrasive wheel and deforming members in the form of turns of coiled to ring steel coil cylindrical spring of round cross section wire are mounted along the same axis. Said spring is mounted at tightness on peripheral surface of sectors. Turns of spring are arranged and secured to grooves whose size and shape are reciprocal to those of spring turns. Said sectors are secured to mandrel according to condition of arranging outer surfaces of deforming members in the same tangent plane with working cutting peripheral surface of diamond-abrasive wheel. Adjustment of combination tool is realized by radial motion of sectors.

EFFECT: enlarged manufacturing possibilities, enhanced efficiency of method, improved hardness of worked surface, lowered cost price of strengthening process with use of diamond-abrasive wheel.

5 dwg, 1 ex

FIELD: manufacturing processes in machine engineering, namely combination diamond-abrasive working and finishing-strengthening blanks of steels and alloys by surface plastic deforming.

SUBSTANCE: combination tool includes mandrel on which are mounted along the same axis diamond-abrasive grinding wheel with peripheral working cutting surface and deforming members. The last are in the form of turns of steel cylindrical coil spring of round cross section wire twisted to ring. Sectors are secured to end of mandrel. In peripheral surfaces of said sectors said spring coiled to ring is arranged. Turns of spring are arranged and secured to grooves formed on peripheral surface of sectors. Said sectors are secured to mandrel according to condition of arranging outer surfaces of deforming members in the same tangent plane with peripheral surface of diamond-abrasive wheel and with possibility of their radial motion.

EFFECT: enlarged manufacturing possibilities, enhanced efficiency, improved hardness of worked surface, lowered cost price of tool.

5 dwg, 1 ex

FIELD: manufacturing processes in machine engineering, possibly hardening parts of steels and alloys by surface plastic deforming.

SUBSTANCE: apparatus includes rotation drive unit, housing and percussion mechanism. Housing is provided with spring-loaded roller supports arranged in its lower part. Percussion mechanism is in the form of carrier with rigidly mounted axles. Radially arranged pins with dividing collars or plates with dividing collars or without them are jointly mounted on said axles by their one ends. Second contact ends of pins are spherical and second contact ends of plates are rounded along their lateral surfaces.

EFFECT: enlarged manufacturing possibilities, simplified design of apparatus, improved quality of treated surfaces.

3 cl, 6 dwg

FIELD: manufacturing processes in machine engineering, namely methods for strengthening and finishing blanks of steels and alloys by surface plastic deforming.

SUBSTANCE: method is realized due to using burnishing device in the form of ring coiled helical cylindrical spring with deforming members in the for of its turns. Said spring is mounted at tightness in regular polygon having number of apexes equal to that of spring turns. Said regular polygon is rigidly mounted in plug. Spring is freely mounted in retainer without possibility of turning around its lengthwise axis. Lengthwise feed motion is imparted to burnishing device. Blank and plug with regular polygon are imparted to rotation at providing additional tightness between spring and blank surface for performing static-pulse action upon blank.

EFFECT: enlarged manufacturing possibilities, enhanced efficiency, increased rigidity of worked surface, lowered cost price of burnishing process.

3 dwg, 1 ex, 1 tbl

Overrunning tool // 2297319

FIELD: mechanical engineering.

SUBSTANCE: overrunning tool comprises housing with disks and deforming members made of turns of steel screw cylindrical spring of round cross-section and interposed between the disks. The spring is rolled into a ring and its turns have varying outer diameter. The spring is provided with a device for control of load of overrunning. The device is made of two washers with central threaded openings secured to the faces of the turns and a screw provided with left and right thread at its ends and screwed in the threaded openings. The spring is mounted for permitting embracing the blank with interference and is pivotally mounted inside the housing by means of extension springs .

EFFECT: expanded functional capabilities.

7 cl, 1 tbl

FIELD: mechanical engineering; production of the rolling devices used for the finishing-strengthening machining of the workpieces made in the form of the shafts.

SUBSTANCE: the invention is pertaining to mechanical engineering, in particular, to the devices used for the finishing-strengthening machining of the workpieces made in the form of the shafts by the surface plastic deformation. The device contains the body with disks, between which there are the mounted deforming components made in the form of the coils of the steel cylindrical spring of the circular section. The spring is coiled into the ring and is floatingly installed between the disks of the body with the possibility to envelop the shaft workpiece with the tension concerning it and is located in the body with the help of the tension springs. The spring has the tool for adjustment of the rolling force, which is made in the form of two washers with the central threaded holes and rigidly fixed at end butts of the coils and the screw with the left-side and the right-side thread on its ends. The screw is screwed in the threaded holes of the indicated washers. The invention allows to expand the technological capabilities of the device, to raise the roughness parameter of the machined surface, to increase its hardness, to increase efficiency, to reduce the prime cost of the device.

EFFECT: the invention ensures expansion of the device technological capabilities, the increased roughness parameter of the machined surface and the surface hardness, the increased efficiency, the reduced prime cost of the device.

6 dwg, 1 tbl

FIELD: mechanical engineering; methods of the multi-component shafts rolling.

SUBSTANCE: the invention is pertaining to the field of mechanical engineering, in particular, to the finishing-strengthening machining of the workpieces in the form of the shafts by the surface plastic straining. The method provides for giving the rotational movement to the workpiece and giving the movement along the working surface to the gear containing the body with the disks, in which the deforming elements are mounted. The deforming elements are made in the form of the coils of the circinate steel screw cylindrical spring of the circular section. The spring is installed so that it could enclose the workpiece and with negative allowance concerning the latter. Perform the spring setting-up for the rolling force with the help of the device used for adjustment of the rolling force. The device for the rolling force adjustment is made in the form of two washers with the central threading holes hardly fixed on the butts of the spring coils and the screw with the left-side and the right-hand threads on its ends, which is screwed into the threading holes of the indicated washers. At that the spring is floatably installed between the disks of the body and allocate in the latter using the extension springs. As the result of it the invention allows to expand the production process capabilities, to increase the parameter of the roughness of the treated surface, to increase its hardness, to increase efficiency and to decrease the cost of the working tools.

EFFECT: the invention ensures the expanded production process capabilities, the increased parameter of the roughness of the treated surface and its hardness, the increased efficiency and the decreased cost of the working tools.

6 dwg, 1 tbl

FIELD: mechanical engineering.

SUBSTANCE: device comprises deforming cylindrical spring that is rolled into a ring and is fit on the regular polyhedron with interference. The number of tops of the regular polyhedron is equal to the number of turns of the spring. The regular polyhedron is secured to the mandrel that is made for permitting rotation. The spring is freely mounted in the separator and is locked against rotation with respect to its longitudinal axis.

EFFECT: expanded functional capabilities.

3 dwg, 1 tbl, 1 ex

FIELD: mechanical engineering.

SUBSTANCE: method comprises setting the blank in rotation and setting the tool with the disk in reciprocation along the blank. The disk is provided with deforming members. The deforming members are made of turns of steel screw cylindrical spring made of wire of round cross-section. The ring is fit on the peripheral surface of the disk with interference. The turns of the spring are distributes and secured in the grooves. The shape and sizes of the grooves correspond to these of the spring, and the depth of the grooves is at lest no less than the diameter of the spring wire. The grooves are made on the peripheral surface of the disk at an acute angle to the longitudinal axis of the tool equal to the angle of inclination of the spring turns. The tool is fit with interference with respect to the blank, which provides the turns that are in a contact with the blank to be shaped into ellipses.

EFFECT: expanded functional capabilities.

6 dwg, 1 tbl, 1 ex

FIELD: mechanical engineering; methods of formation of the two-level microreliefs.

SUBSTANCE: the invention is pertaining to the field of mechanical engineering, in particular, to the methods of formation of the two-level microreliefs. The method provides for rotation of the detail, its feeding and formation on its surface of the two-level constant microrelief combined in height by the vibrorolling of the grooves by the ball and the indenter. The grooves rolled by the indenter are placed between the grooves rolled by the ball. The grooves are made sinusoidal by the ball vibrorolling with the ball radius of Rb = l.5...2.0 mm with the effort of Рb = 160...500 N and by the indenter with the radius of Rind = 0.5...0.8 mm and with the effort of Pind =80... 250 N. At that the grooves rolled by the indenter are made with the smaller interval and the smaller height, than the grooves rolled by the ball. The technical result of the invention is the increased microhardness of the surface, the residual stresses of compression are formed in the surface layer, the wear resistance is increased, the treated surface the support length and support area are increased.

EFFECT: the invention ensures formation of the residual stresses of compression in the surface layer, the increased microhardness of the surface, its wear resistance, the support length and support area of the treated surface.

2 cl, 2 dwg, 1 tbl, 1 ex

The invention relates to the processing of metals by pressure and can be used for manufacturing cold rolling spiral augers used in various industries

The invention relates to the field of metal forming and may find application in the manufacture of tubular products with a spiral profile of heat exchangers for various purposes

The invention relates to the field of sheet metal processing by pressure

FIELD: mechanical working of metals, namely apparatuses for rolling around round shapes such as helical grooves of shells of rope drums of cargo hoisting machines.

SUBSTANCE: apparatus includes supporting member in the form of disc and indenters arranged along its circle and provided with device for mounting them. Indenters are in the form of balls whose radiuses are equal to radiuses of rolled around profile of helical surface and they are arranged in semi-spherical jackets radially placed on disc. Centers of said indenters in the form of balls are spaced from vertical rotation axis of disc by distance equal to radius of pitch circle of disc and with pitch equal to that of helical line of rolled around helical surface. Radius of pitch circle of disc is determined according to given formula. It is possible to roll around helical surfaces with radius of round shape less than 35 mm.

EFFECT: enlarged manufacturing possibilities of apparatus, lowered roughness of surface.

2 dwg

FIELD: metallurgy.

SUBSTANCE: device includes first selvage motion roller for formation of biflex elements on both straight edges of metal strip, cutting rollers, implemented with ability of cutting of extracted from first selvage motion rollers metallic strip lengthway for two strips along the straight or wave-like lines. Additionally mentioned rollers are able to alternation of angle of horizontal rotation. It is also plate-flanging facility for connection of single curved element with biflex element with curling of cut metal strip in the form of spiral. On both straight edges of metallic strip there are formed biflex elements. Metallic strip is cut lengthwise for two strips by wave-like or straight lines by means of cutting rollers. It is formed single curved element on wave-like edge and it is connected to biflex element with curling of cut metal strip. It is also possible continuous cutting of metal strip by straight and wave-like lines lengthwise. For cutting of strip by straight line cutting rollers are located parallel to metal strip on the section of metal strip input and on the section of metal strip end. Cut metal strip is curled with integration of linear connecting boxes with both ends of curvilinear box. Additionally for cutting of strip by straight and wave-like lines there are alternated angles of horizontal rotation.

EFFECT: there are extended manufacturing capabilities, there are increase accuracy and reliability of connection.

7 cl, 17 dwg

FIELD: mechanical engineering.

SUBSTANCE: device consists of case, of bearing assemblies arranged in case, of disk roller with hub and working profile on periphery designed to rotate in bearing assemblies, and of spring. The spring facilitates contraction of the disk roller to processed side surfaces of screw grooves of screw surfaces. The bearing assemblies are made in form of a sliding thrust bearing. The spring is made as a compression spring and is installed between the side wall of the case and end surface of one of the sliding thrust bearing. The hub of the disk roller is made spherical in form of a working semi-sphere; its centre is located in geometric centre of the disk roller. Working semi-spheres of the hub are conjugated with the sliding thrust bearing and form an adjusted spherical joint. The sliding thrust bearings are designed to travel along axis of the disk roller and to be fixed in the case for adjustment of the said spherical joint. A system of channels in the bearing assemblies lubricates the spherical joint.

EFFECT: raised efficiency and reliability of electro-mechanical processing.

2 dwg

FIELD: mechanical engineering.

SUBSTANCE: facility for fine-strengthening treatment is actuated for line and cross feeds, while treated billet is actuated for rotation. The facility for fine-strengthening treatment consists of a case in form of a disk, of a cam drum rigidly fixed relative to the case and of damping elements. Cams formed with recesses and lugs are made on the end of the case. Deforming elements are secured on ends of leaf springs. With their other ends leaf springs are radially and rigidly attached to the end of the disk, while their middle part contacts the cam drum. The disk with deforming elements is actuated to rotation thereby applying pulse load force to deforming elements. Lengthwise axes of rotation of the billet and disk with deforming elements are set mutually perpendicular.

EFFECT: expanded process functions, control over depth of strengthened layer and micro-relief of surface.

12 dwg, 1 ex

FIELD: mechanical engineering.

SUBSTANCE: device consists of case in from of disk designed to rotate, of deforming elements, of laminar springs and of cam drum. The cam drum is rigidly fixed relative to the case; on its end there are made cams in form of lugs and recesses for contact with a middle part of laminar springs. The deforming elements are secured on one ends of the laminar springs; other ends of springs are radially and rigidly attached to the end of the disk.

EFFECT: expanded process functions, control over depth of strengthened layer and micro-relief of surface.

12 dwg, 1 ex

FIELD: mechanical engineering.

SUBSTANCE: facility consists of case with deforming elements arranged therein, of head and wave guide whereto periodic pulse load is applied by means of head, of nut, of V-shape bent leaf springs and of cylinder screw compression springs. The cylinder screw compression springs are placed between the nut and a free end of the wave guide. The case is made with a central hole for billet positioning. The wave guide is made in form of a bushing. The leaf springs with their end are rigidly secured on surface of the case hole, while on their other end there are arranged the said deforming elements; also cams are attached to their middle section. The cams contact internal surface of the wave guide to facilitate radial travel and straightening ends of leaf springs with the deforming elements under effect of periodic pulse load.

EFFECT: expanded process functions, control over depth of strengthened layer and micro-relief of surface.

6 dwg, 1 ex

Up!