achine tools; metal-working not otherwise provided for (B23)

	Boring mill Machine comprises a long-length box-type supporting frame with horizontal guides, at one of the frame ends a vertical post is installed and fitted with vertical guides for vertical travelling of a spindle head with an electric motor and a boring head, the frame is equipped with a lower slide able of moving along the frame guides and an upper slide able of moving in the plane perpendicular to the frame guides, a turning table with a mounting plate for a workpiece positioning, is mounted on the upper slide. The frame is fitted with grooves where thin plates of high alloy steel and nonferrous metal alloys are glued. The guides of the frame and the vertical post are provided with aerostatic supports formed by the guide itself and a plate set above it with a gap and presented in the form of built-up guides having at least three rectangular sections divided by drainage channels on the condition of preventing the leakage of air from one section into another, with the width of at least 30 mm and the length of every rectangular section being maximum 500 mm. Each section is fitted with a hole for supply of air under pressure and by distributing microgrooves on the condition that capillary channels are formed together with the frame surface to prevent rapid increase of air consumption.
	Diagnostic system and method for detection of critical condition when assembling aircraft body Diagnostic system is intended for detection of critical condition and giving positional information to operator which information relates to location of detected critical condition. The diagnostic system is capable to prevent body movement from one position to another when critical condition has been detected and to unlock such movement when error source is eliminated.
	Welding of large-diameter pipes by laser beam Laser beam effects point is tracked from inside by laser transducer. Said laser transducer is used to scan the butt across the weld and at the front of welding zone. Said laser transducer is fitted at the rod inside the pipe. Laser transducer position relative to welding head in horizontal is defined by gyro at said rod or by means of extra laser radiator secured with transducer at said rod, extra radiator beam being directed to fixed TV camera.
	Striker guide Invention relates to a guide for a striker designed for the removal of a bolt from a lining. The guide comprises a bush with a hole made so as to receive at least part of the bolt to be removed, and a magnetic fastening unit. The magnetic fastening unit is coupled with the bush and can selectively generate a magnetic field for detachable fixing of the striker guide to the metal surface.
	Change gear bracket and change gear unit adjustment method Change gear bracket is equipped with an additional shaft which enables to obtain gear transmission with constant axle spacing at the output shaft and the additional shaft. The required pair of gears is selected from the set of gear wheels applied to the bracket and applied to the additional and output shafts. Gear wheels for transmission with varying axle spacing are selected from the remaining set. As a result, the theoretical number of transmission ratios increases considerably, which increases accuracy of adjusting the change gear unit.
	Method to produce brake pad with noise protection Method involves preparation of a frame body with one or more through holes. A damping layer is applied onto the prepared frame body and is covered by a metal plate fitted by folded elements in the form of edges or an edge. The edges or the edge are placed in the holes or the hole of the frame body. Moulding of a brake lining on the frame body is carried out with simultaneous moulding of the edges or the edge of the metal plate into the brake lining.
	Device for feed of powder mix fur plasma surfacing Device comprises chamber, powder feed system composed of two bins secured at chamber top section by powder ducts, two discs with loading channels rigidly secured at DC motor armatures. Angle between disc rotation plane and mirror axis of powder feeder makes 30-45 degrees to allow good fluidity and quality of fed powder mix. Chamber accommodates the union for feed transfer gas and powder mix and transfer gas feed nozzle.
	Container for soldering Invention relates to soldering hardware, particularly, to container for soldering to be used in machine building. Said container consists of case and cover. Parts are configured to allow partial fitting of one part into another one at cover closing to form clearance between said parts. Male part is made from material with higher thermal expansion factor than that of female part. Size of clearance is selected to ensure a tight fit between said male and female parts at soldering when the temperature of soldering material interaction with air gases.
	Method of electric erosion and chemical treatment of parts with dielectric coatings Method involves gradual treatment of a part by tubular electrode tool connected to negative pole of process current source, and additional tubular electrode connected together with the part to positive pole of process current source, where electrode tool is rotated against longitudinal axis along with operational movement. At the first stage, dielectric coating is removed at the necessary part area by feeding conductive work fluid to processing area through additional electrode, and contact the fluid with work end of electrode tool; at the second stage, base material of the part is removed to form a given profile by feeding electrolyte through electrode tool, stopping feed of work fluid through additional electrode at the same time.
	Method of profiled surface turning Proposed method consists in fitting the cutter in holder and locking it therein. Then, cutter turn centre is displaced in path formed by equal-length perpendiculars projected to tangent to processing surface at cutter point. Cutter is arranged in its holder so that said perpendiculars extend through cutter point location at machined surface while their length equal the distance from said point to cutter turn axis.
	Spark-erosion piercing of holes Invention relates spark-erosion processing and can be used for spark-erosion piercing of small-diameter of a wide range of parts, for example, fuel nozzles. In compliance with this invention, ultrasound oscillations are applied to electrode in coordination with operating voltage pulse feed. Note here that operating voltage pulse feed is timed with the phase of approach of electrodes according to the relationship φ=2πƒt+kπ, where ƒ is ultrasound oscillation feed frequency, t is time, s, l<k<1.5. Note here that said electric pulse feed frequency ƒe is varied discretely as electrode penetrates into workpiece. Note also that said frequency of ultrasound oscillations makes 18-88 kHz while amplitude equals 5-30 mcm.
	Electron-beam welding Invention relates to electron-beam welding. Proposed method comprises applying of local magnetic field to parts butt, directing of electron beam to said butt to form penetration channel and electron-beam welding of parts at bottom position with part-through penetration. Applied is magnetic field its direction being perpendicular to butt plane. Electron beam is directed at acute angle to the interface selected to make electron beam enter the penetration channel at 90°±15°, to form beam curvilinear path and to direct electron beam nearby penetration channel bottom at 0÷30°.
	Method of making composite material Alternating layers of base metal and reinforcing metal are packed at the ratio of layers area making 1:(0.5-0.7). Layers are subjected to explosion welding, low-temperature annealing, rolling and final high-temperature annealing. Used reinforcing layer is composed by perforated metal sheets with through channels uniformly distributed over sheet area. Said tapered channels feature opposite-direction taper in adjacent channels. Channels with like taper are staggered in sheet plane.
	Device for abrasive disk grinding Method involves rotation of a grinding disk and translational displacement of a workpiece being treated. The grinding disk is rigidly fixed between two disks from a conducting material which are connected to the negative pole of a power supply source and are set with a gap in respect to the surface of the workpiece connected to the positive pole of the power supply source. An electrolyte is supplied by a connecting pipe to the said gap between the disks and the treated workpiece for the purpose of electrochemical softening of the material on the treated workpiece section with its further removal by the grinding disk.
	Method and device for slab surface processing at production line Invention relates to continuous CSP process from continuous teeming to hot rolling at production line. Slab top and bottom surfaces are subjected to oxidation. Before said oxidation scale is removed from slab surface. 4 mm deep slab (5) layer is subjected to oxidation. Oxidation is executed by oxidising flame of oxidising gas mix fed by oxidising device (21) including sprayer or sprayers to produce solid or liquid oxidation product at slab surface.
	Cutting tool, holder and method of cutting tool assembly Cutting tool (10) has bit (14) and holder (12). Bit (14) has cutting part (16) and stem (18) with cylindrical part and out-of-round part (30). Holder (12) has clamp part furnished with clamp bush (42) and cup (40) arranged therein. Cup has seat (48) for load application element (62). Said cup has large thrust wall connected with smaller thrust wall. Clamp bush (42) has first and second inner parts confined by two points P1 and P2. Point P3 divides second inner part into first and second section. Clamp bush (42) can turn between cutting tool clamping and unclamping positions. At unclamping position, said out-of-round part rests on large thrust wall while cylindrical part rests on smaller thrust wall and load application element resting, in its turn, on first section.
	Rotary tool Rotary cutting tool comprises multiple long elements (23), slide (25) to retain them relative to tool rotary axis, guide plates (57) for said long elements and cutting bi at, at least, one long element. Note here that said guide plate (57) extends from at least one long element.
	Method and device for cutting of edge of thick metal plates Distance between upper knife (2) for cutting of wastes or lower knife (3) for cutting of wastes and plane (4) of edge-cutting knives is set before the edge is cut depending on thickness of the corresponding thick metal plates (10) subject to edge cutting by shifting upper knife (2) for cutting of wastes and/or lower knife (3) for cutting of wastes in the shift direction at least with one component across plane (4) of edge-cutting knives.
	Indirect cooling of rotary cutting tool Invention relates to machine building and can be used for high-speed machining by rotary tools made from titanium and other low heat conductivity materials This system includes at least one zone at tool body for fitting the cutting element in place and indirect cooling channel in tool body for coolant feed. Temperature of said coolant is lower than that of ambient medium on cutting element rear surface. Besides, it has cavity formed at cutting element rear surface to receive cooling fluid from the channel for cutting element cooling. Said cavity has discharge hole connected with discharge hole at cutting element surface to discharge cooling fluid into atmosphere. Cooling fluid flow rate does not exceed 10% of required flow rate of synthetic cooling fluids at machining of the same part by irrigation. Cooling fluid represents a two-phase flow for heat removal from cutting element by heat absorption at evaporation of cooling fluid.
	Cutter and method of its production Invention relates to production of cutters from cemented carbide with superhard tips for destruction of hard and abrasive materials. Cutter (100) comprises insert (110) including superhard tip (112) jointed with support body (114) from cemented carbide with stem (118) and steel holder (120) for said insert (110). Steel holder (120) comprises shaft (122) for connection with tool arbour (not shown) and channel (126) to accommodate stem (118). Said stem fits in said channel through at least 4 cm. Volume of support body (114) from cemented carbide makes at least 10 cm3. Stem surface area adjoins the channel surface inner area making at least 20 cm3 while stem diameter making at least 1.5 cm and not over 4.0 cm. Cutter stem is fitted in steel holder channel with interference fit of 0.002-0.3%.
	Method of assembly with interference Invention relates to machine building. One part is inserted into another one by transfer of force to part from slider. Hydraulic cylinder is used as the slider drive. Driving force is generated by fluid compression inside said cylinder. At insertion, obtained joint is broken intermittently by lengthwise relative displacement of the part. Breaks are performed at fluid compression in working chamber to generate the force exceeding that of cylinder piston resistance. Cylinder allows pre-variation of its initial working volume and maximum fluid pressure.
	Retractable slide for metal cutting machines and its application thereat Retractable slide consists of the shaft with at least one front assembly fitted thereon. Said assembly is composed of rotary bush engaged via bearings with machine stationary structure. Note here that said front assembly can be removed by withdrawing it outward or displacing it inside. This leaves the space for the head rear rotary shaft to be fitted therein. Besides, this invention relates to metal cutting machines equipped with such retractable slide.
	Method to produce internal straight channel in long-length pipe by lathe machine At first a stopper is put into the pipe inside and a unit is installed so that to rest against it, the unit consists of a three-jaw self-aligning chuck fixed by the gaskets whose thickness is specified in advance which are set between the chuck jaws and the inner pipe surface so that its centre of rotation coincides with the centre of rotation of the pipe being bored, as well as of an internal bush with a plug guide hole into which a turning centre tip is inserted while the turning centre is installed in a stem pressed by the tailstock centre. The stem is fitted by a hollow mandrel with its length being less that the stem length which can travel along the stem longitudinally; one mandrel end is fitted by a fixture and is fixed in the machine tool holder, and the other is fitted by a fixture where a lathe tool is fixed. Afterwards boring of the pipe is started considering the optimal value of material removal, then after the tool fixture enters the pipe inside the mandrel is clamped in a turning steady rest and boring is continued until maximal permissible approach of the lathe tool fixture on the mandrel to the three-jaw self-aligning chuck set inside is reached. Then the process is stopped, the unit is demounted, the pipe is turned, the bored pipe side is clamped in the chuck, the stopper is put inside and the three-jaw self-aligning chuck is installed so that to rest against it while its jaws abut against the bored pipe surface without gasket being used, afterwards the bush with the plug guide hole is inserted in the chuck and the turning centre tip is set against it. Boring on the remaining pipe part is continued until connection with the previously bored part is reached.
	Pcd diamond Invention relates to PCD diamond to be used in production of water-jet ejectors, engraving cutters for intaglio, scribers, diamond cutters and scribing rollers. PCD diamond is produced by conversion and sintering of carbon material of graphite-like laminar structure at superhigh pressure of up to 12-25 GPa and 1800-2600°C without addition of sintering additive of catalyst. Note here that sintered diamond grains that make this PCD diamond feature size over 50 nm and less than 2500 nm and purity of 99% or higher. Diamond features grain diameter D90 making (grain mean size plus grain mean size × 0.9) or less and hardness of 100 GPa or higher.
	Flat nozzle of burner for argon-arc welding Flat nozzle includes a rectangular and all-metal nozzle tube with a wide front edge and with narrow lateral edges, on which longitudinal water-cooled channels are located. Supply and discharge holes of longitudinal water-cooled channels together with their supply and discharge connection pipes are located on the front wide edge of the nozzle tube. Cover plates are made in the form of solid rectangular plates and arranged on lateral edges of the nozzle.
	Method of accelerated determination of optimum cutting speed This method is characterised by that for tool-part pair at different cutting speeds v defined are tangential cutting forces Pz, fluctuation of tangential cutting forces P ˜ z , fluctuation of cutting speeds υ ˜ and variable thermal EMF ε ˜ . Note here that criterion of optimum cutting speed is composed by fluctuation power N ˜ = P ˜ z υ ˜ or coefficient of fluctuation power application K N = N ˜ N ¯ = P ˜ z υ ˜ P z υ or analogue of entropy production in heat processes at contact S ˜ = P ˜ z υ ˜ ε ˜ . Note also that optimum cutting speed corresponding to minimum wearing of the tool is defined by maximum fluctuation power obtained at the curve of variation in fluctuation power complex, or by break point of fluctuation power use coefficient obtained on the curve of fluctuation power complex use factor variation. Or by minimum parameter of analogue of entropy production in heat processes at contact obtained on the curve of variation in the complex of analogue of entropy production from heat processes at contact.
	Method of magnetic pulse machining Invention relates to machine building and cab be used for stabilisation of part geometry by equalising residual strains in its surface plies. Proposed process comprises processing of the part by current pulses fed by inductor with two-circuit generator with inductance and capacitive storage. Note here that prior to processing, space between inductor and part located in generator secondary circuit is filled with ferromagnetic rheological fluid. Note also that capacitive storage charge time in generator primary circuit is set equal to rheological fluid solidification time. Mind that time interval between pulses is limited by fluid stay in solidified state.
	Method of electrochemical treatment Invention relates to electrochemical treatment of metal parts. Proposed method comprises electrochemical processing of metal part at feed of fluid jet with porous current conducting pellets. Said pellets are pre-saturated with electrochemical reaction gaseous products, reaction proceeding at displacement of said pellets in fluid at pressure in cathode channel. Anode coated with cellular dielectric is arranged inside said cathode. Note here that saturation time interval of porous current conducting pellets is adjusted by channel inlet fluid pressure.
	Hard alloy body Invention relates to powder metallurgy, particularly, to production of hard alloy body from hard alloy containing tungsten carbide grains and metallic binder comprising cobalt with definite concentration of tungsten dissolved therein. Hard alloy body has bordering surface area and inner area. Note here that mean fraction of binder in inner area is larger than that in surface area. Note here that carbon concentration in the binder is larger in surface area than that in inner area. Note that hard alloy body does not contain eta-phase and free carbon. Concentration of tungsten dissolved in binder in surface area is smaller than that in inner area and defined as (16.1-σt)/0.275, where σt is quotient of had alloy body magnetic moment division by mass fraction of binder in this area. Hard alloy body is produced by forming of unsintered blank containing the tungsten carbide grains distributed in cobalt-containing binder, preliminary sintering at 1000-1280°C for 1-3 hours, thermal treatment in carburising medium and liquid-phase sintering at 1320-1400°C.
	Making of weld at welding or surfacing of parts from difficult-to-weld metals and alloys Invention can be used for welding or surfacing of parts from difficult-to-weld metals and alloys. Weld sections are sequentially made by step-by-step reciprocation of electrode or welding head. Length of the weld first section makes 40-60% of welding step. Electrode or welding head is turned to weld first section welding start to weld second section in length equal to said step. Note here that said first part is made at rerun over weld previous section while second section is made at article surface to produce a transition part. Then, electrode or welding head is returned for spacing equal to the weld previous section second part length. Next section is produced in length equal to welding step by rerun over second part of weld previous section and over article surface. Welding or surfacing is reiterated required number of times unless weld of preset length is produced. Last section of the weld of residual length is made by rerun over previous section second part.
	Method to weld pipelines without preliminary heating of joints Method involves connection of two and more cylindrical metal pipes, pipe sections, pipe strings by welded ring joint using arc welding along the whole pipe perimeter. Each welded joint pass is performed by parallel overlapping of two string beads. The second string bead covers the first one completely and is an annealing pass.
	Stencil for hole drilling Stencil comprises a layer of crystallised water-soluble polymer composition from 0.02 to 0.3 mm thick which is applied onto at least one surface of backing up metal foil. Average size of the crystal grain of the water-soluble polymer composition amounts to 5-70 mcm, and standard grain size deviation does not exceed 25 mcm. Surface roughness Sm in the point of drill bit tip entering the water-soluble polymer composition layer amounts to maximum 8 mcm. The layer is formed by applying of hot melt of the water-soluble polymer composition directly onto the backing up metal foil or by applying of solution containing the water-soluble polymer composition with the following drying and further cooling under the temperature reducing from (120-160)°C to (25-40)°C during 60 sec at cooling rate of at least 1.5°C/sec.
	Cutting plate and cutting tool Cutting plate with a through hole having a side surface is designed for the installation and fixation in a cutting tool socket, is limited by the identical upper and lower surfaces in the form of a polygon or a circle and by a side surface set between them. The cutting plate has a rotation symmetry axis passing through the centres of symmetry of the upper and lower surfaces and coinciding with the through hole axis. The side surface of the through hole is fitted by recesses each of which is confined by cylindrical surface and at least one conical surface or convex surface of rotation; at each recess the axes of the cylindrical surface and of at least one conical surface or convex surface of rotation coincide and are set parallel to the through hole axis. A cutting tool comprises a case with at least one socket where the cutting plate is installed and fixed with the help of a fastening screw fitted by a head. The socket is fitted by a lower backup wall and three side backup walls meant for setting inside the through hole of the cutting plate; one of the side walls is intended for the interaction with the fastening screw head, the second one - with the conical surface or convex surface of rotation of one of the said cutting plate's recesses, and the third one - with the cylindrical surface of the other recess.
	Device to fix workpiece Device comprises a base part to fix a workpiece having the surface for the workpiece fixation as well as a rotational base part having the surface for the adjustment of an inclination angle which is inclined in respect to the axis of the rotational base part. The base part meant for the workpiece fixation is fitted by the surface for the inclination angle adjustment being opposite to the workpiece fixation surface, inclined in respect to the latter and contacting with the surface for the inclination angle adjustment of the rotational base part. The device comprises also a joint unit used to connect the workpiece fixation base part and the rotational base part around a vertical annular projection with the possibility of adjustable rotation, the said projection is provided on the surface of contact interaction of the workpiece fixation base part or the rotational base part to hold the opposite side at turning.
	Device to fix workpiece Invention provides for high reliability and rigidity of the whole device along with accurate adjustment of inclination angles and of turning of the workpiece fixed on the device. The device comprises a base part to fix a workpiece having the surface for the workpiece fixation as well as a rotational base part having the surface for the adjustment of an inclination angle which is inclined in respect to the axis of the rotational base part. The base part meant for the workpiece fixation is fitted by the surface for the inclination angle adjustment being opposite to the workpiece fixation surface, inclined in respect to the latter and contacting with the surface for the inclination angle adjustment of the rotational base part. The device comprises also a joint unit used to connect the workpiece fixation base part and the rotational base part with the possibility of adjustable rotation.
	Method of female thread making Invention relates to metal forming and cutting. Proposed process is implemented with the help of tap provided with thread cutting elements with exposed contour and chip removal sections. Tap thread ID at taper lead section is smaller than thread cutting ID by twice the depth of defect surface layer formed at cut thread turn top. Chip removal sections are equipped with cutter bits arranged at the last turn of taper lead and first gaging turn to cut flat profile of cut thread. This tap has lengthwise central bore and crosswise bores for forced feed of lubricant-coolant to cutter face surface cutting zone. Tape drive incorporates overrunning coupling with splines inclined to lengthwise axis. Said coupling is fitted in the bush splined bore. It can slide on guide keys arranged in drive case to increase spring rpm by pulse lengthwise force and compression spring.
	Control over electric power supply of welding transformer for single-phase ac welding machines Invention relates to welding. Proposed method comprises generation of voltage for welding transformer rated to industrial frequency by cyclic alternate commutation of linear voltages with the help of two three-phase controlled rectifiers with opposite-parallel connection. Note here that every linear voltage of three-phase supply circuit is connected to welding transformer for definite number of supply circuit half-periods. Note also that connection of every next linear voltage is effected before the half-period end of previous linear voltage of the same polarity, these connections being reiterated cyclically. Besides, to rule out magnetic saturation of welding transformer core at every half-period of commutation of two linear voltages the voltage is adjusted so that its integral magnitude per a period equals zero.
	Method and device for stop valve sealing surface Processing of sealing surface at stop valve connection pipe end comprises the steps that follow. Valve top part and body built-in elements are remove from stop vale body to clear the body bore. Clamp counter-support is placed via body bore (14) into connection pipe or the other connection pipe and secured to its inner wall. Machining tool with support is fitted into the body and placed on said counter-support. Said tool process the sealing surface. This tool is withdrawn from counter-support and the body via its bore. Aforesaid clamp is detached from connection pipe and withdrawn via body bore. Valve top part and built-in elements are places at the body. Proposed device comprises clamp with counter-support, fastener (47) to interact with connection pipe inner wall, machining tool with support to be mounted at counter-support.
	Thread cutting and expansion collet Invention relates to thread cutting at lathes in hollow thin-wall cylinders, for example, rocket engine body. Preliminary boring of inner surface is performed by rough and finish passes followed by thread cutting in rocket engine body. After rough boring, rocker engine body sizes are thermally stabilised at normal temperature for at least 24 hours. Then, said body is clamped at lathe chuck with turn through 120 degrees to perform finish boring and thread cutting. Prior to clamping said body in said chuck, an expansion collet is fitted inside said body. Said expansion collet is composed by split bowl with cone there inside and lugs bent off outward. Said lugs form surface conical section conjugated with cone surface at back of said lug. They have contact sites made at the ends to form opposite force in rocket body compression zone. Note here that a through hole is made at cone centre to receive the screw to be screwed in bank threaded bore made at bowl leg. Bowl leg base has circular skew for connection with rocket engine body bottom.
	Lathe for train wheels Machine includes tool designed to interact with a wheel; compound rest machining slide system for cutting tool positioning along at least two axes, associated computer control to manage compound rest machining slide system. The compound rest machining slide system is managed so that a wheel could be machined along its contour according to desired pattern.
	Horizontal milling machine In a horizontal milling machine with a box-type frame where a vertical pole with guides for vertical travelling of a knee is installed, the main spindle of the machine is protruded from the pole, and a ram-type arm bracket is equipped by a swivel head with a spindle having an independent drive with an attachment head with its own spindle being attached to the swivel head, the latter is provided with two pivot axis: a horizontal one being the axis of the ram-type arm bracket and a vertical pivot axis of the arm bracket perpendicular to it; the attachment head can rotate around its axis. Milling tools are fixed directly in the spindles or mandrels, and holding of a mandrel inserted in the main spindle is provided by outer supports. A workpiece travels along by the guides of a stationary table, across - by the table slides moving in the guides placed in the horizontal plane on the knee, and vertical travelling of the workpiece is performed by the vertical movement of the knee which is presented as a box with large overhanging length in respect to the vertical pole guides mating it with the pole, a transmission gear box is built-in in the knee, and a main spindle speed gear box - in the pole; the knee comprises a multishaft feed gear box, distributing-reversing mechanisms with electromagnetic clutches and a gear with a drive screw.
	Tool clamping universal system for machining centre Proposed system relates to NC machining centres comprises the main drum supporting tool head seats with pads for attachment, location and rearrangement of tool heads in every seat. Tool heads can be selected from the set of heads for turning, honing, boring, drilling and high-speed cutting with the help of multiple tools. Or every head can allow the combination of said jobs and accommodate several tools. Said main drum can perform stepwise displacement to locate said tool head seat with secured head to working position. Thereafter, said seat performs stepwise displacement to locate the selected tool to machining position.
	High-precision inner surface grinding device Invention relates to machine building and can be used for grinding inner cylindrical and conical bores of precision parts at circular grinders and at repair and small-lot production. Proposed device comprises supports for location surface of revolving processed part, attachment clip with bolts and dog to transmit rotation to said part from the machine tool cage. Besides, it comprises springs secured at clap bolts and machine tool front head to press the part to machine tool stationary centre.
	Tool holder and tool arbour Invention relates to tool holder (1), collet (15) with locking nut (19) and arbour (27). In compliance with this invention, collet (15) and arbour are locked and positioned in tool holder (1) at different functional surfaces. Nevertheless, one lock-up means is used, that is, thread of tool holder (1).
	Cutting tool with bidirectional adjustment mechanism Invention relates to machine building and may be used for cutting metals. Cutter comprises body, at least one bit to be plugged in its seat and fastened by screw, through adjusting bore in said body to receive the adjusting screw, slider fitted in the seat and having top and bottom surfaces to interact with said bit and adjusting screw head. Said slider comprises top and bottom surfaces and peripheral lateral surface including front V-like recess, lateral surfaces and curved rear surface. Slider front surface has at least two different support sections arranged at opposite sides of said V-like recess. Turning of said adjusting screw in opposite directions makes an axial two-way adjustment of the bit at tightened fastening screw.
	Composite shaped disc cutter Composite shaped disc cutter comprises steel body with locating bore and cutting blades with carbide inserts. Said cutting blades have different-shape grooves for plug-in carbide inserts to fit therein shaped to said grooves. Note here that said inserts are multifaceted elements that can cut metric tread and turn the grooves with angle of 80 degrees and quenched threaded rolls and make grooves at pulleys.
	Current feed nozzle for automatic welding to narrow cut Invention relates to welding equipment, particularly to current feed nozzle for welding to narrow cut at welding of 300-500 mm thick vessels operated at pressure, etc. Current feed nozzle comprises flat casing with welding wire feed channels and those for pendulum tip cylindrical rod and flexible lead-in. Said tip is articulated with said casing and consists of fixed pendulum contact plate and movable contact plate. Symmetric rectangular slots with semi-cylinder grooves are made at lateral surfaces of the casing and pendulum fixed contact plate mating surface. Flexible lead-in consists of several twisted conducting wires fitted in said semi-cylinder grooves and locked by pressure plates having appropriate semi-cylinder grooves tightened by threaded elements.
	Buildup of cylindrical article radial bore inner surface and device to this end Invention relates to surfacing by hidden-arc build-up of antirust coatings on inner surfaces on radial bores made in vessels operated under high pressure. This method comprises preset order of rolls application on inner surface of said bores made in cylindrical article. Device welding head can rotate during surfacing about axis of the bore in spiral or circular trajectory. Said head is equipped with cassette revolving therewith which comprises electrode head and flux-adding and supporting device.
	Non-consumable electrode for arc welding This non-consumable electrode consists of cylindrical body and working section. Radial slot is made at α<90° to the axis terminating at electrode end surface in diametral plane of working section in generatrix.
	Steel part inductive hard-facing Prior to inductive hard-facing of the charge, the part is subjected to preliminary hardening to the depth of 0.3-0.6 mm. Used charge consists of the mix of 20-30% of boron carbide and 70-80% of flux. Said mix in depth of 0.8-1.4 mm is applied on the part. Said charge is fused by high-frequency current and cured at, at least, 1240°C for 50-70 s.

Another patent 2513755.