51results about How to "Dimensional accuracy is easy to guarantee" patented technology

The present invention discloses a laser processing head and a multi-light source, multi-function and multi-axis processing apparatus comprising the same. The laser processing head includes a shell, an optical path system, a locating conical disk-shaped connecting mechanism, a laser range finder, a motor driving mechanism and a dust collection protection cover. The laser processing head has the advantages of a plurality of processing modes, flexibility in laser selection and easiness in replacement. The multi-light source, multi-function and multi-axis processing apparatus includes an apparatus control and operation system platform, a multi-axis linkage numerically-controlled machine tool and the laser processing head; the laser processing head is fixed on a high-precision multi-axis linkage machine tool through a blade handle type positioning cone device; and large-breadth and cross-scale laser fine processing only requires the switching of a laser light source, a laser optical path and the laser processing head, so that at least three kinds of large complex component fine surface processing application can be realized. The multi-light source, multi-function and multi-axis processing apparatus is especially for the aerospace field. The laser processing head and the multi-light source, multi-function and multi-axis processing apparatus comprising the same of the invention have the advantages of low manufacturing cost, wide application range, convenience in mass production and the like.

The invention discloses a rotary type magneto-rheological damper which is characterized in that the damper mainly comprises an outer shell, a front end cap, a back end cap, a front magnet exciting coil, a back magnet exciting coil, a rotor, a bearing, a sealing washer, seal rings and magnetic isolation rings. The front and back end caps are located at the two sides of the rotor and are respectively connected with the outer shell, forming a stator. The bearing and the sealing washer are respectively arranged between the rotor and the front and back end caps. The front and back magnet exciting coils are wound inside the front and back end caps. The magnetic isolation rings are respectively installed between the front and back end caps and the outer shell, and O-shaped seal rings are respectively arranged between the magnetic isolation rings and the outer shell as well as the front and back end caps. A sealed liquid charging hole is formed at the upper part of the outer shell, and magneto-rheological fluid is filled in a hollow cavity between the stator and the rotor. The front and back magnet exciting coils are wound in the same direction, with the tail ends being connected with each other in series and the head ends being loaded with power sources. The two magnet exciting coils form two parallel magnetic pathways which generate two magnetic fields in opposite direction, and the magnetic flux is generated by a single piece of magnet exciting coils.

The invention provides a forming process for special C-shaped channel steel and belongs to the technical field of steel material rolling and forming. The special forming process for C-shaped channel steel comprises the following steps of: conveying and feeding band steel, leveling, micro-pressing, locally heating, forming a dovetail-shaped edge, cooling, gradually rolling and forming, straightening and discharging. The special forming process has the advantages that: when narrow band steel is used for manufacturing the special C-shaped channel steel, the C-shaped channel steel with a dovetail groove edge can be obtained by adopting the processes of locally heating and gradually and continuously rolling and forming, and synchronous motion of a band steel conveying mechanism and a discharging mechanism can be realized. By adoption of the process for manufacturing the special C-shaped channel steel, energy is saved, production efficiency is high, and the produced C-shaped channel steel has high shape and size precision and high bearing capacity.

The invention discloses a high-voltage DC relay and an assembly method thereof. The high-voltage DC relay comprises two fixed contacts and a movable assembly, wherein the movable assembly comprises a movable spring part, a main spring and a push rod assembly, the push rod assembly comprises two independent parts of a push rod part and an U-shaped basket, the push rod part comprises a fixed piece and a push rod which are fixed together by insulation plastic, the two ends of the fixed piece are respectively fixed with the bottom of the side part of the U-shaped basket after the main spring, the movable spring part and the U-shaped basket are sequentially arranged at the top of the push rod part, so that the main spring is elastically tightened between the bottom surface of the movable spring part and the insulation plastic of the push rod part, and a movable spring piece props against the inner side of the top of the U-shaped basket. By dividing the push rod assembly into two independent parts, the high-voltage DC relay has the characteristics of simplicity in structure, convenience in forming and easiness in ensuring size accuracy; meanwhile, the two parts are easy to assemble, and automatic assembly of parts which are mutually matched is easily achieved; and moreover, the bonding resistant ability also can be enhanced.

The invention relates to the technical field of machining, and provides a cold heading manufacturing method for a connection bolt of an ignition switch. The method includes the steps that according to the wire diameter and the name needed during machining of the connection bolt, a material of a predetermined length is cut; cold heading is carried out on a semi-product of the connection bolt so that a head portion and a pole portion can be formed, and an arc face, a notch and a bottom end face of the head portion can be formed; the pole portion of the semi-product of the connection bolt is squeezed and threaded so that threads can be formed, and a finished product of the connection bolt is obtained. The invention further provides a connection bolt cold heading die based on the cold heading manufacturing method. Product quality problems are solved and production cost is reduced.

The invention discloses a rapid type pipeline connector. The rapid type pipeline connector comprises a pipeline connector, one or more rapid type connecting ports used for external connecting pipelines are formed in the pipeline connector, the inner wall of each rapid type connecting port is provided with a circle of connecting groove communicating to the end surface of the rapid type connecting port, and a sealing assembly is placed in each connecting groove. Each rapid type connecting port is sleeved with a rapid connecting assembly, and each rapid connecting assembly comprises a rapid connecting inner annular cover, an outer cylinder cover and a receding stopping sleeve, wherein the rapid connecting inner annular cover sleeves the corresponding connecting port and blocks the outside of the sealing assembly, the outer cylinder cover sleeves the corresponding rapid connecting inner annular cover and the corresponding connecting port, and the receding stopping sleeve is mounted in the corresponding outer cylinder cover and located at the outside of the corresponding rapid connecting annular cover. The external connecting pipelines can penetrate through the receding stopping sleeves and the rapid connecting inner annular covers to be inserted into the sealing assemblies in the connecting ports. According to the rapid type pipeline connector, rapid mounting and dismounting operation of the external connecting pipelines can be achieved, modularized connecting of multiple rapid connecting pipe fittings can be further achieved, and use is flexible and convenient.

The invention relates to additive and subtractive compound manufacturing equipment. In the equipment, additive and subtractive processes are finished independently, and a subtractive tool and an additive forming assembly are not switched by using a tool switching device on a machining center, so that the production efficiency is improved greatly. The equipment comprises the machining center, the additive forming assembly and a cooling nozzle. The additive forming assembly comprises a connecting plate, a motor, a rectilinear motion linear module and an energy depositing metal additive forming device. The rectilinear motion linear module is fixed to a spindle box of the machining center and is slidably connected to the connecting plate. The energy depositing metal additive forming device isfixedly mounted on the connecting plate. The motor provides power to the rectilinear motion linear module, so that the connecting plate drives the energy depositing metal additive forming device to move up and down. The cooling nozzle is fixed to the spindle box of the machining center, and an air outlet faces a working table-board of the machining center.

The invention belongs to the technical field of preparation of an aero-engine fixation guider, relates to an aero-engine ceramic matrix composite fixation guider blade structure and a molding method thereof, and is to overcome the structural defects that an existing CMC guider blade prefabricated body is unreasonable in design and poor in blade root strength. A turbine guider blade manufactured in an integrated assembly mode comprises multiple stages of guide blades, parts are integrally assembled in a riveting mode, and an assembly structure adopts a SiC ceramic matrix to achieve welding; aneffective space between an upper edge plate and an outer casing is fully utilized, the blade body and the upper edge plate are installed and positioned through limiting rivets and a limiting table, the SiC ceramic matrix is deposited on the whole product through the CVI technology, and integrated preparation is completed; by means of the structure, the complex SiC / SiC multi-connected high-pressure guide blade has good manufacturability, the edge plate and the blade are easier to manufacture and more reliable to install, and the dimensional precision of a final product is easier to guarantee;and the structure can be fully applied to medium-sized and large-sized engines and five-generation engines.

The invention discloses a drive wheel end face drive finish turning clamp for a bevel gear. The drive wheel end face drive finish turning clamp for the bevel gear comprises a connection rod (1), a cover plate (2), a push plate (3), a drive pin (4), a centre (5), a clamp body (6) and a front cover (7). The clamp body (6) is connected with the front cover (7). The drive pin (4) is matched with a drive pin hole (72) of the front cover (7), and the centre (5) is matched with an inner cavity (73) of the front cover (7). The connection rod (1) is connected with the push plate (3) through the cover plate (2) to form a component which does reciprocating motion in an inner cavity (62) of the clamp body (6) to push the drive pin (4) and the centre (5) to position a workpiece. The drive wheel end face drive finish turning clamp for the bevel gear is simple and reliable, clamping is convenient, finish turning of a whole gear shaft can be finished at one-time clamping, the size precision of the shaft is guaranteed easily, and the efficiency is high.

A technology for machining the elliptical cam on hobbing-relieving-grinding machine-tool by copying method includes such steps as making a copying elliptical cam, installing it onto the mainshaft of said machine-tool, regulating the machine-tool for synchronous rotation between mainshaft and copying elliptical cam, clamping the blank of the elliptical cam to be machined onto said machine-tool, and turning on the machine-tool to machine said blank until it become a finished product.

The invention relates to an assembled ultra-narrow gap MAG / MIG welding insulating spray nozzle which comprises a left insulating strip arranged on the left side of a current contact nozzle at the end of an ultra-narrow gap MAG / MIG welding gun body through a sunk screw, front-rear insulating plates and a right insulating strip, wherein the front-rear insulating plates and the right insulating strip are arranged in the middle and on the right portion of the end of the welding gun body respectively. According to the assembled ultra-narrow gap MAG / MIG welding insulating spray nozzle, the spray nozzle is improved to be of a 4-piece-assembled type from a traditional integral type, cracking, breakage and invalidation caused by large local work temperature difference are greatly lowered, and the service life of the spay nozzle is greatly prolonged; the region, with the highest risen temperature, of the spray nozzle under a long-term working environment is located at the front-rear insulating plates at the current contact nozzle, the allowable free expansion amount of the front-rear insulating plates is given in the design, manufacturing and mounting processes, in work, when the front-rear insulating plates are heated through strong thermal radiation of electric arc and convection current, the insulating spray nozzle extends freely totally without rigid constraint in the thermal expansion state, otherwise the spray nozzle can be shortened freely, so that the service life of the insulating spray nozzle is greatly prolonged.

The invention relates to a channel steel forming method, which belongs to the technical field of rolling, processing and forming of iron and steel materials. The forming process of channel steel is as follows: strip steel feeding → leveling → micro pressure → local heating → dovetail edge forming → cooling → step-by-step cold bending forming → straightening → blanking. The channel steel is prepared by local heating and multi-channel step-by-step roll forming. The dimensional accuracy of the prepared professional channel steel is easy to ensure, and the appearance is free of burrs. The production efficiency of channel steel produced by the method of the invention is high, the process is simple, and the obtained special channel steel has strong bearing capacity, long service life and low production cost.

A method for preparing fine-diameter cast iron section includes such steps as putting a casting mould in a vacuum system, vacuumizing, filling molten iron in the cavity of mould via sprue cup under the action of vacuum, and solidifying in vacuum state. Its advantages are high rate of finished products and precision, and high quality.

The invention provides a multifunctional fan blade hub. The multifunctional fan blade hub comprises a hub body and axial flow blades arranged on the outer circumferential surface of the hub body. The inner wall of the circumference of the hub body is provided with multiple centrifuge blades which are arranged evenly at intervals. The long edge of the axial side of each centrifuge blade is arranged on the inner wall of the circumference of the hub body. According to the multifunctional fan blade hub, the mode that an original hub is directly connected with a motor shaft through a single shaft is changed into the mode that the hub is directly connected with an armature through bosses, so that the connection stability is guaranteed, jumping between the hub and the armature is reduced, and the balancing performance is improved; when the multifunctional fan blade hub is applied to a matching fan, the ambient environment can be cooled, and a motor in the hub body can be effectively cooled through heat dissipation holes or cooling fins, so that the reliability of the fan is improved, and the service life of the fan is prolonged; the multifunctional fan blade hub is not provided with inserts and is integrally formed, so that the size precision of the blades is guaranteed more easily.

The invention provides a tool for bending an electrostatic ring lead of a transformer, belonging to technical field of transformer manufacture and comprising a contact roller, a support, a rotation disc, and a hold-down mechanism used for regulating the radial clearance between the contact roller and the rotation disc, wherein the rotation disc and the hold-down mechanism are respectively arrangedon the support, the contact roller is connected to the hold-down mechanism; the outside circumferential surface of the rotation disc is provided with a circumferential slot; the width of the circumferential slot adapts to the thickness of the electrostatic ring lead of the transformer; the contact roller is arranged outside the outside circumferential surface of the rotation disc; and the axial line of the contact roller is parallel to the axial line of the rotation disc. The invention changes manual manufacture into tool manufacture, thereby creating a brand-new method for producing an electrostatic ring, improving work efficiency reducing the technical content of operation, and being is easy to learn and operate; the appearance of a bent forming copper bus is smooth and attractive, andthe dimension precision is easy to guarantee; the appearance of the bent forming copper bus has no scratches or sharp angles, and the electric property is higher. The tool has small volume and can beflexibly moved.

The invention relates to a manufacturing method for stamping and welding forming of a sheet of a clutch spline hub assembly. The manufacturing method is characterized in that the clutch spline hub assembly is structurally regarded as two parts of a spline hub and a piston oil cylinder body, firstly, the spline hub and the piston oil cylinder body are manufactured separately; then the spline hub and the piston oil cylinder body are welded into a semi-finished product of the spline hub assembly; and finally a finished product is obtained through finishing. The manufacturing processes of the spline hub comprise board blanking, spline groove stamping, oil hole stamping, clamp spring groove forming, spline hub winded welding and spline hub cutting and parting in sequence. The manufacturing processes of the piston oil cylinder body comprise board blanking, piston oil cylinder body stamping forming, central via hole stamping, rivet hole stamping and edge cutting in sequence. The manufacturing method has the characteristics that the spline hubs are manufactured through group processing in two-by-two mode by utilizing boards, then cutting is conducted to form two independent spline hub blanks, next one spline hub blank and the piston oil cylinder body are welded and formed, and finishing is conducted to obtain the spline hub assembly product. The manufacturing method has the advantages of high machining efficiency, material saving, easily-controlled size precision and low cost.

The invention discloses a machining method for deep hole of marine engine connecting rod. The method comprises the following steps: Firstly, a tool is installed for positioning the connecting rod on the work table of the machine tool, and a total of four main axes is arranged on the machine tool, each of which is provided with a gun drill. Secondly, the connecting rod to be processed is fixed to the tooling. Thirdly, the table is fast moved to the first station, so that the first spindle and the second spindle on the gun drill slowly into the tooling of the guide sleeve hole, while processing two lower bolts of connecting rod through the hole. Fourthly, the table is fast moved to the second station, so that the third spindle and the fourth spindle on the gun drill slowly into the tooling guide sleeve hole, while processing two head bolts of connecting rod through the hole. Fifthly, when processing is completed, the table is moved back to the reference point. The invention can complete all the processing, and the clamping operation is simple, and the processing efficiency is high, and the invention also can reduce the processing cost twice, and the dimensional accuracy, the shape and position tolerance are easy to be guaranteed.

The invention provides a channel steel forming process and belongs to the technical field of steel and iron material rolling and forming. The channel steel forming process comprises the steps of strip steel conveying and feeding, leveling, micro-pressing, local heating, dovetail edge forming, cooling, step-by-step rolling, straightening and discharging. The channel steel forming process has the advantages that channel steel with dovetail groove edges can be obtained and synchronous movement of a strip steel conveying and discharging mechanism can be achieved by adopting the processes of local heating and step-by-step continuous roll forming when ribbon steel is utilized to manufacture channel steel. By the adoption of the channel steel forming process for channel steel manufacture, energy sources are saved, the production efficiency is high, and the produced channel steel is high in shape and size accuracy and good in bearing capacity.

A case panel machining method mainly comprises the technological steps of wire-electrode cutting electric machining blanking and numerical control milling. A universal multi-process and multi-work-type machining technology is changed, a wire-electrode cutting electric machining mode is adopted for blanking, and a plane, a cavity and a rectangular annular flange are milled in a numerical control mode in the length direction for machining, so that the deformation problem in the machining process can be effectively solved, the dimensional precision is easy to guarantee, the quality is stable and consistent, the surface quality is good, the planeness is smaller than 0.1 mm, a heat treatment destressing procedure is not needed, the production process is compact, concentrated and short, the machining cost is low, the production period is short, and safety and reliability are achieved.

The invention provides an annular airbag display for a dust collector. The display comprises a shell, a movable indicating body arranged in the shell and a cover connected to the shell, wherein the shell is a round shell of which one end is open while the other end is closed; the center of the closed end is provided with a round convex column projecting inwards; the upper part of the shell is provided with a boss inserted into a display window; the lower part of the shell close to the closed end is provided with an air outlet; the four sides of the indicating body are depressed inwards to form a concave part of which the middle is provided with projecting positioning column; an annular airbag arranged on the round convex column of the shell is also provided; the other end of the annular airbag is inserted into the positioning column of the indicating body; and the middle of the cover is provided with an air inlet, which closes the shell by a disk part and is connected to the shell. The annular airbag is used as a resetting element of the indicating body, and gas with set pressure is filled in the airbag in advance, so the annular airbag display is opened under specific pressure. The size accuracy of the airbag is easy to be ensured and the processing technique is simple, so the indicating body acts correctly and the acting failure rate of the indicating body is lowered.

The invention discloses a multifunctional micro metering hole electric spark machining clamp. The multifunctional micro metering hole electric spark machining clamp comprises a base, a clamping blockI and a clamping block II, wherein the center of the base is provided with a variable diameter hole, and the diameter of an upper hole is smaller than the diameter of a lower hole in the variable diameter hole; a positioning shaft I is arranged at the bottom of the clamping block I, the diameter of the positioning shaft I is matched with the diameter of the upper hole, an eccentric sliding valve mounting groove is formed in the upper part of the clamping block I, and a to-be-machined sliding valve is arranged in the sliding valve mounting groove; a positioning shaft II is arranged at the bottom of the clamping block II, the diameter of the positioning shaft II is matched with the diameter of the upper hole, an eccentric valve block mounting groove is formed in the upper part of the clamping block I, and a to-be-machined valve block is arranged in the valve block mounting groove; when the clamp is used for machining the sliding valve, the clamping block I is arranged on the base, and the sliding valve is arranged into the clamping block I; and when the valve block is machined, the clamping block II is arranged on the base, and the valve block is arranged in the clamping block II. The multifunctional micro metering hole electric spark machining clamp has the advantages that the clamp assembly is simple in structure, clamping of an operator is fast, the manufacturability is high,the machining freedom degree of a part is reasonably limited, and the size precision of the pat is guaranteed easily.

The invention provides a groove steel forming process and belongs to the technical field of steel and iron material rolling forming. The groove steel forming process comprises the steps of band steelconveying feeding, leveling, micro-pressing, local heating, dovetail edge forming, cooling, step-by-step rolling forming, straightening and discharging. The groove steel forming process has the advantages that when narrow band steel is utilized to manufacture groove steel, groove steel with a dovetail groove edge can be obtained through the process of local heating and step-by-step continuous rolling forming, and synchronous motion of band steel conveying and a discharging mechanism can be achieved. By adopting the groove steel forming process to manufacture the groove steel, energy sources are saved, the production efficiency is high, and the produced groove steel is high in shape and size precision and high in bearing capacity.