58results about How to "Guaranteed processing size" patented technology

The invention discloses a processing method for annular type engine-case radial narrow groove, and belongs to the field of machinery manufacture. In consideration of the integral rigidity of a part, the method employs a layered progressive helix-track one-time milling mode for realizing small cutting depth and high feeding, fully gives play to the cutting performance of a cutter, improves the processing efficiency, guarantees the processing dimension, and successively solves the problems that numerical-control milling processing of the annular type engine-case radial narrow groove is low in efficiency and not high in quality. Also the method is applicable to processing of narrow grooves with any shapes. Along with application of the technology to annular type engine-case parts, the processing method determined by the technology possesses guidance meaning, and provides good establishment for accelerating research progress of novel aviation engines and reducing research cost. From another point of view, the method creates relatively large value for improving efficiency, reducing cost and improving quality of aviation engines in the future and being applied to large-batch production.

The invention provides a splitting machining method for shells of a horizontal splitting type centrifugal compressor case. The method includes the steps that rough machining is performed on the shellsof the centrifugal compressor case; stress relieving, shot blasting, shaping and paint spraying treatment is performed on the shells of the centrifugal compressor case; the upper and lower shells ofthe centrifugal compressor case are independently subjected to splitting semi-finish machining; and the upper and lower shells of the centrifugal compressor case are independently subjected to splitting finish machining. According to the splitting machining method for the shells of the horizontal splitting type centrifugal compressor case, the problem that load borne by a machining device is limited is solved, and the machining dimension and the geometric tolerance precision of each part of the shells of the case can also be guaranteed.

The invention discloses drilling equipment for machining a circumferential normal hole of pipe fitting. A first lifting module, a drilling unit body and a plurality of drill bits are arranged in an upper base frame, so that primary motion and feed motion can be achieved simultaneously, that is, a plurality of normal holes in the axial direction of the pipe fitting can be machined in the circumferential surface of the pipe fitting at one time, and the number of the normal holes can be controlled through the number of the configured drill bits; moreover, the pipe fitting can be borne and locatedby arranging a lower base frame and a radial positioning element arranged on the top surface of the lower base frame, and the situation that the symmetry degree of the pipe fitting is too poor and large deflection is generated in the machining process is avoided; and in this way, the machining quality and the machining size are guaranteed while the pipe fitting machining efficiency is guaranteed,and the drilling equipment is quite suitable for circumferential drilling of the pipe fitting and is particularly suitable for machining the pipe fitting with large specification and large length-to-diameter ratio.

The invention relates to a machining technique of an anchor chain Kenter shackle, which comprises the following steps: connecting a tooling with a working platform of a numerical control (NC) milling machine, and connecting a molding cutter with the main shaft of the NC milling machine, wherein the fixture is provided with four workpiece mounting positions. The NC milling machine enables the main shaft to rotate to move the working platform, so that the molding cutter machines a workpiece according to the following steps: machining the surfaces A and B of each workpiece; machining the surfaces C and D of each workpiece; machining the surfaces E and F of each workpiece; and machining the surfaces G and H of each workpiece. The four workpieces are clamped and machined within one time, thereby ensuring uniform size of the workpieces; the invention reduces the number of clamping and the number of transportations by the workers, and greatly reduces the labor intensity; the eight machining surfaces of each workpiece are completed on one device, thereby lowering the machining cost of the workpieces and enhancing the machining efficiency; and the invention ensures the machining size and quality of the workpiece, reduces the remilling in the workpiece assembling process, improves the working environment of the workers and ensures the lawful rights of workers for security and health.

A laser machining apparatus for machining the splitting slot on master bearing seat for the cylinder body of engine is composed of a mechanical system and a YAG solid laser cutting system. Said mechanical system consists of cylinder body and its machine frame, and bench and its machine frame. Said bench comprises a numerally controlled X-Y bench, an X-axis bench and a Y-axis bench with a laser cutting head driven by a rotary cylinder to rotate by 180 deg.

The invention discloses a preparation method for a sputtering titanium ring and belongs to the technical field of titanium metal product machining. The method comprises the steps of: selecting a Ti cast ingot, the purity of which is 99.95% above, and manufacturing a titanium batten through forging, rolling, thermal treatment, leveling and machining; removing surface dirt and engraving the surfaces of the titanium batten with laser; then rolling the engraved titanium batten to a titanium ring by using a rolling machine; and cleaning and drying the titanium ring to obtain the sputtering titanium ring. The stress of the rolled Ti batten machined by the high-temperature thermal treatment process is small; by adopting laser engraving, grains of various types can be machined as required, so that the using quality of the product is improved, the product quality is stable and consistent and meanwhile, the work efficiency is improved and the cost is lowered.

The invention discloses an armored cable preheated-type cold rotary forging device and a forging method thereof. The forging device comprises a reducing rotary forging machine which is provided with a clamping and feeding device; a cylindrical temperature controllable heater is arranged between a host machine of the reducing rotary forging machine and the clamping and feeding device. The method for carrying out armored cable preheated-type cold rotary forging by utilizing the armored cable preheated-type cold rotary forging device comprises the following steps of: a) straightening; b) clamping; c) feeding; d) heating; and e) rotary forging. According to the invention, the springback quantity of materials in the rotary forging process can be reduced obviously; and by preheating a work piece continuously in the rotary forging process, the stress strain of a work piece inner region is reduced and the plastic deformation capability of work piece materials is improved. A result shows that when the armored cable rotary forging is carried out by adopting the rotary forging technology, the springback quantity of the materials is reduced by 50% in the rotary forging process, the finishing size of the rotary forging piece is ensured, and the tolerance grade of the rotary forging piece is improved effectively.

The invention relates to the field of support devices for overhead contact systems on railway lines, and aims to provide a manufacture method of a tunnel cantilever base capable of improving anti-fatigue performance. According to the technical solution, the tunnel cantilever base comprises a base, an adjustment base and a rotating shaft. At least one of the base, the adjustment base and the rotating shaft is processed according to the following steps: (S1) shearing blanking and removing rust; (S2) heating a blank part; (S3) performing hot forging; (S4) performing ultrasonic flaw detection; (S5) performing cold pressing and bending of a plate obtained after the processing of the step 4, and folding two sides of the plate to form a groove; (S6) performing normalizing; (S7) sequentially performing rough processing and semifinishing of obtained parts; (S8) carburizing the parts processed according to the step 7, then quenching, and performing low temperature tempering; (S9) performing chromium plating; (S10) performing finishing again and adjusting the size. The cantilever base after being processed according to the manufacture method has good wear resistance and high fatigue resistance.

The invention discloses a numerical-control automatic cam lathe comprising a frame, an engine base, a nose, a spindle, a numerical-control operator, a feed device and a numerical-control cutter rest. The numerical-control cutter rest is provided with an X-axis cutter, a Y-axis cutter and a Z-axis cutter, and the Z-axis cutter is driven by an eccentric cam connecting rod mechanism. The numerical-control automatic cam lathe has the advantages that the eccentric cam connecting rod mechanism controls cutter feed, is combined with numerical control and the like to perform fine operation and guarantee size accuracy in product processing; workpiece clamping is completed through automatic feeding, labor is reduced and labor efficiency is improved; cut workpieces are automatically fixed, multi-directional cutting can be realized, cutting requirements of different shapes are met, the same workpiece can be processed and formed on the lathe at one step without frequent changing devices, full-automatic cutting process is realized, processing size and shape and position tolerance of the workpiece are guaranteed, and production efficiency and product processing speed are effectively improved.

The invention relates to a method for machining an overlong concentric ladder through hole on an ordinary boring machine through a lengthening boring cutter rod. The method comprises the steps that 1, all parts of a workpiece are subjected to rough machining, and the periphery of the workpiece is subjected to finish machining; 2, the workpiece is subjected to alignment and clamping; 3, the lengthening boring cutter rod is composed of a taper shank section and a bare shaft section, the bare shaft section is provided with a plurality of boring cutter grooves in the longitudinal direction, and the shaft end of the bare shaft section is sleeved with a sliding sleeve; 4, a tailstock bracket is installed on the ordinary boring machine; 5, the lengthening boring cutter rod penetrates through the concentric ladder through hole, one end of the taper shank section is connected with a spindle of a machine tool, one end of the bare shaft section is installed on the tailstock bracket through the sliding sleeve, and the sliding sleeve and the tailstock bracket are tightly locked; a boring cutter body is installed, and try cutting is conducted; and 7, after try cutting is qualified, all the parts of the concentric ladder through hole are subjected to finish machining to reach the requirement of a drawing. According to the method for machining the overlong concentric ladder through hole on the ordinary boring machine through the lengthening boring cutter rod, existing machine tool auxiliaries are fully utilized, and the situation that the bore hole machining precision is influenced due to sinking of the lengthening boring cutter rod is avoided; and the effect that the size, the form and position tolerance and the surface roughness of the overlong concentric ladder through hole machined on the ordinary boring machine meet the requirements is ensured, so that the machining cost is reduced, and the production efficiency is improved.

The invention discloses a damping follow rest for turning a slender axle. The damping follow rest comprises a lower support seat and an upper support seat, wherein the upper support seat is matched with the lower support seat, the upper support seat and the lower support seat form a cylindrical hollow cavity structure, the inside of the hollow cavity is sheathed with a fixing sleeve, the inside of the fixing sleeve is provided with a damping sleeve which is provided with an inner hollow structure, the damping sleeve is in taper fit with the fixing sleeve, one larger-diameter end of the damping sleeve is provided with a spring, the spring is fixedly arranged in the fixing sleeve by an end cap, and the spring acts on the large-diameter end surface of the damping sleeve through a gasket. The damping follow rest has the advantages that the vibration is basically eliminated, so the influence caused by the abrasion of the damping sleeve is eliminated; the abrasion speed of an inner hole of the damping sleeve can be reduced by coolant, so a purpose of reducing the abrasion of the damping sleeve is realized; the use specifications of the support seats are reduced, and the material usage amount and the processing amount of the fixing sleeve are reduced, so a purpose of saving energy is realized; the processing size and the shape tolerance of a workpiece are ensured, and the qualified rate is improved; and the processing cost is effectively reduced, and the production efficiency is improved.

The invention provides a lathe capable of realizing positioned cutting. The lathe comprises a slide plate and a movable assembly which is mounted on the slide plate for bearing a tool rest, wherein the movable assembly comprises a slide base, a limiting mechanism and a limiting assembly; the slide base can be mounted on the slide plate in a sliding mode; a sensor assembly is mounted on the slide base; a fixed block is fixedly arranged on the slide plate; when the slide base moves on the slide plate, the sensor assembly gets away from or gets close to the fixed block; in a process of controlling the slide base to move towards the limiting mechanism by a controller in a lathe, a first detected value of the sensor assembly is obtained, and the first detected value is used for indicating a distance between the fixed block and the sensor assembly; and when the first detected value of the sensor assembly reaches a preset value, the slide base is controlled to switch a moving direction of theslide base, so that the slide base is far away from the limiting mechanism. The problem that operation of regulating the position of a dead corner is complex when a to-be-processed part is replaced or feeding amount is replaced in the related technologies is solved.

The invention discloses a method for machining a turbine rotor with a special-shaped center hole. The method for machining the turbine rotor with the special-shaped center hole comprises the followingsteps that a turbine disk and a turbine shaft are welded; heat treatment is conducted; a center hole is drilled, and the turbine disk outer circle and end face margin are removed; semi-finish turningis conducted on end faces of the turbine end of the turbine disk and the special-shaped center hole; turning is conducted on a technological choke plug; semi-finish turning is conducted on end facesof the air-compressing end the turbine disk and the outer circle and end faces of the turbine shaft and the outer circle; a turbine shaft inner hole is drilled; turning is conducted on a turbine shafttool withdrawal groove, chamfering and a shaft stair inner hole; heat treatment is conducted; the technological choke plug and the turbine disk are welded and fixed; the center hole is turned in thetechnological choke plug, and two end faces of the big outer circle of the turbine disk are turned; the big outer circle of the turbine disk and the outer circle M of the turbine shaft are ground; a turbine shaft threaded hole, a stair inner hole and taper are turned, and tapping is conducted; the big outer circle of the turbine disk and end faces, the outer circle of the turbine shaft and end faces, the small outer circle of the turbine disk and the turbine disk D face are ground; an air-sealing groove is turned; and the technological choke plug is removed.

The invention discloses a forming method for a large concave forging. The forming method for the large concave forging comprises the following steps of A, performing heat preservation on a steel ingot for 6-7 hours at the temperature of 1220-1240 DEG C; B, performing upsetting drawing out for two times: firstly, performing necking, chamfering and secondary upsetting; then, performing stretching, tail cutting and indentation, pressing to form a concave part, and cutting to obtain a semi-finished product; and C, horizontally placing a low anvil on two mandrel supporters, and putting in the heated semi-finished product obtained in the step B. According to the forming method for the large concave forging disclosed by the invention, the concave forging which is complicated in shape is forged by utilizing a small-tonnage hydraulic press and the steel ingot, and therefore, not only is the quality of the forging satisfied but also the condition of traditional equipment is considered; the utilization rate of the steel ingot is improved, and the concave forging of which lugs are very big can be forged. The inherent quality of the forging can be ensured by a reasonable reheating schedule and enough forging ratio, and the forming and machining dimension of the forging is ensured by reasonable metal deformation and tool use.

The invention provides for a clamp for rotation milling machining of a gas compressor blade profile. The clamp for rotation milling machining of the gas compressor blade profile can solve the problems that when a common three-jaw chuck is adopted, blade clamping is not stable, and the machining size is out of tolerance. The clamp for rotation milling machining of the gas compressor blade profile comprises a rotation disk which is fixedly provided with a clamp body; a blade handle portion positioning and clamping assembly is installed on the clamp body and comprises a pressing plate and a positioning base fastened and installed on the clamp body; the positioning base is provided with a V-shaped positioning groove; one outer side end, located on the V-shaped positioning groove, of the positioning base is provided with a supporting block;, and the other outer side end is provided with a locking threaded rod; one end of the pressing plate is movably connected with the supporting block, and the other end of the pressing plate is fastened on the locking threaded rod through a locking nut; an inverted-V-shaped pressing block is arranged at the bottom of the pressing plate; and the inverted-V-shaped pressing block and the V-shaped positioning groove are right opposite to each other in an up-down manner.

The invention relates to a corner bending device for a disc spring. The corner bending device comprises a base, a spring clamping column and a corner bending column, the spring clamping column and the corner bending column are arranged on the upper portion of the base, a notch is formed in the top of the spring clamping column, the starting end of the center portion of a spring to be bent is clamped in the notch of the top of the spring clamping column, the corner bending column is arranged on one side of the spring clamping column, the distance between the corner bending column and the spring clamping column is matched with the distance between the corner bending position of the spring to be bent and the starting end of the center portion of the spring to be bent, the diameter of the corner bending column is matched with the diameter of the arc at the corner bent position of the spring. When the disc spring is processed, corner bending is carried out on the tail portion of the disc spring according to a certain length, a certain angle and a certain bending diameter to meet the manufacturing requirement and manufacturing precision of the disc spring, the processing size of the spring is guaranteed, and production efficiency and the qualified rate are improved.

The invention discloses a reverse reaming countersink inner end face knife. A knife rod is directly fixed on a power head main shaft; and the reaming countersink inner end face knife is installed on acone at the lower end of the knife rod, is provided with keyed joint, and is fixed by a lock handle. The reaming countersink inner end face knife is provided with a location structure for controllingthe depth of the reaming countersink inner end face. A guide part one the knife rod enters into the proper position in the machined small hole, and is provided with the reaming countersink inner endface knife. A reverse feed knife machines a rough machined large hole and an inner end face. The reverse reaming countersink inner end face knife has the following advantages in that the fine machining of the large hole and the inner end face under the small hole of spare parts are completed when machining the small hole, thereby guaranteeing the machining size and position error of the spare parts, reducing one work procedure, and improving machining efficiency.

The invention relates to the technical field of preparation processes of special parts for laser fusion ignition, in particular to a femtosecond laser processing method and system for a polymer spherical crown in double-cone collision ignition. The specific process comprises the following steps of depositing and growing a layer of polymer film on a micro steel ball on a steel mesh substrate; positioning machine vision focus on the surface of a micro steel ball film through a mobile platform; integrally cutting off a spherical crown thin film from the micro steel ball; stripping the cut spherical crown thin film from the micro steel ball through light wiping of a cotton swab; and flatly placing the stripped spherical crown thin film on a glass slide, and modifying and processing the edge of the spherical crown by using femtosecond laser. On the premise that the machining size is guaranteed, high-quality machining of the spherical crown film of a double-cone target is achieved, and the quality of the spherical crown meets the precise matching requirement of the double-cone target. A screening standard is provided for spherical crown processing, a reliable technical route is formed, the high consumption requirement of a spherical crown sample in an ignition test is guaranteed, and development and research of laser controllable nuclear fusion are promoted.

The invention discloses a steel pipe concrete column ring beam joint and a steel bar binding construction method thereof. The steel pipe concrete column ring beam joint comprises a steel pipe, a studand ring beam main reinforcements, the ring beam main reinforcements are mounted on the outer side of the steel pipe, hoop reinforcements are fixedly bound on the ring beam main reinforcements and include first hoop reinforcements and second hoop reinforcements which are bound between the ring beam main reinforcements in a staggered manner, namely, the first hoop reinforcements and the second hoopreinforcements are bound on the peripheries of the ring beam main reinforcements, the second hoop reinforcements are arranged on two sides of each first hoop reinforcement, first hoop reinforcementsare arranged on two sides of each second hoop reinforcement, inner sides of the mounted first hoop reinforcements contact with the outer wall of the steel pipe, and the outer sides of the second hoopreinforcements and the first hoop reinforcements are bound on the outermost ring beam main reinforcement. According to the steel pipe concrete column ring beam joint and the steel bar binding construction method thereof, compared with the prior art, overall reinforcing steel bar binding processes are optimized, overall binding difficulty is reduced, and the joint is economical, durable, high in practicability and wide in application range and has excellent popularization and application values.

The invention relates to the technical field of processing of a thin-walled cylinder-shaped part, in particular to a clamping tool of the thin-walled cylinder-shaped part with a horn mouth and a processing method. The clamping tool and the processing method aim to solve the technical problem that the machining dimension and the accuracy of an existing thin-walled cylinder-shaped part with a horn mouth cannot be ensured. The clamping tool comprises at least three support strips uniformly distributed in the circumferential direction of the horn mouth, the two ends of each support strip abut against a machine tool clamping jaw and the outer wall of the horn mouth correspondingly, one end of each support strip is provided with a groove for containing the end of the machine tool clamping jaw, and the other end of each support strip is provided with an arc-shaped concave part for fitting the outer wall of the horn mouth; and two wires which are located at the two ends of each support stripeand used for hooping the support strips are further included, and each support strip is provided with two fixing grooves which are formed in the two ends and used for embedded winding of the wires. The processing method comprises the three steps that an inner hole of a cylindrical section is processed, an inner hole of the horn mouth is processed through the above clamping tool, and the outer circle is processed.

The invention relates to a method for solidifying a protective clip in a carbon / silicon carbide brake disc. The method comprises the following steps: based on the preparation of a carbon / silicon carbide protective clip, preparing a precasting body on a special fixture in a carbon cloth lamination winding mode; densifying the precasting body by adopting CVD (Chemical Vapor Deposition); when the density is increased to (1.60+ / -1) g / cm<3>, taking out the precasting body to be machined and taking out the fixture; connecting the obtained precasting body to a brake disc blank to be treated in a ceramic-casting mode by using a carbon rivet; carrying out a ceramic-casting treatment on the precasting body and the brake disc together so as to integrate the carbon / silicon carbide protective clip with the carbon ceramic brake disc; and carrying out machining treatment and anti-oxidation coating treatment, thereby forming the carbon / silicon carbide brake disc with the carbon / silicon carbide protective clip. According to the invention, the riveting difficulty caused by the deformation of the brake disc treated in the ceramic-casting mode is overcome; the carbon / silicon carbide protective clip cannot be damaged easily and has the characteristics of small density and abrasion resistance; and the load-carrying surface of the brake disc is enlarged by increasing the contact area of the carbon / silicon carbide protective clip, so that the damage on the brake disc due to the load-carrying unevenness of the brake disc is reduced. In addition, the protective clip provided by the invention also has the characteristics of reliability in connection, high temperature resistance, abrasion resistance, good toughness and convenience in assembling.

The invention discloses a three-pin-shaft fork sawing machine machining positioning clamp which comprises a base and a clamp body arranged on the base. A front-back adjusting device capable of makingthe clamp body move front and back along the base is arranged between the base and the clamp body. A bottom plate is arranged at the lower portion of the clamp body, and positioning grooves which arein multiple stations and are used for fixing three-pin-shaft forks are formed in the lower portion of the interior of the clamp body side by side. Blank inner cavity positioning devices used for positioning inner cavities of the three-pin-shaft forks are correspondingly arranged at the positions, in the front-back direction of the clamp body, above the positioning grooves, wherein the number of the blank inner cavity positioning devices is the same with that of the positioning grooves. Vertical adjusting device capable of making the blank inner cavity positioning devices move vertically are arranged at the rear portions of the blank inner cavity positioning devices. Pressing devices are arranged above the blank inner cavity positioning devices, and the pressing devices include pressing aircylinders and pressing plates arranged at the power output ends of the pressing air cylinders. By means of the three-pin-shaft fork sawing machine machining positioning clamp, the structure is simple, positioning is stable and reasonable, the machining efficiency is high, the coverage of the machining specifications and sizes is wide, the measuring size is ensured, and scraping caused by inaccurate positioning of parts is effectively avoided.

The invention discloses a mask, a manufacturing method of an array substrate, and a display panel. The mask comprises: a first exposure region corresponding to the channel region, a second exposure region which is positioned on one side of the first exposure region and is about to form a source electrode, a third exposure region which is positioned on the other side opposite to the first exposure region and is about to form a drain electrode, a fourth exposure area which is located on the partial edge of the second exposure area and is not overlapped with the first exposure area, wherein the first exposure area and the fourth exposure area are both semi-transparent areas. According to the technical scheme, in the exposure and development process of the mask, part of light resistance can be left in the areas corresponding to the first exposure area and the fourth exposure area, and a channel area to be formed and an area to be formed with a source electrode are protected, so that the processing size of the source electrode is guaranteed, and the stability of stray capacitance formed by the source electrode and the grid electrode is improved.

The handle part machining tool comprises a bottom plate, a positioning plate and a part clamp, a first positioning face is arranged on the upper surface of one side of the bottom plate, the positioning plate is arranged on the bottom plate, the positioning plate and the first positioning face are arranged in a spaced mode, and a second positioning face is arranged on the upper surface of the positioning plate; the part clamp is arranged on the side, away from the first positioning face, of the bottom plate and used for being connected with the tail end of the handle part blank. The machining tool is ingenious and novel in structural design, the first positioning face is arranged to carry out veneering supporting on the side plate, needing threaded hole machining, of the handle opening, the second positioning face is arranged to carry out veneering supporting on the side plate, needing through hole machining, of the handle opening, and the problem that the side plate deforms and collapses due to the fact that the side plate of the handle opening is directly punched can be effectively solved. The invention further provides a processing system and a processing method of the handle part, the processing size of the handle part blank can be ensured on the premise of ensuring reliable tool positioning, meanwhile, the processing efficiency is improved, and the production cost is reduced.

A battery necking machine comprises a rack, a rotation shaft and a driving assembly, wherein the rotation shaft is arranged on the rack, a press rod lifting cam, a press rod rotation wheel, a rotation disc, a top rod rotation wheel and a top rod lifting lower cam are sleeved on the rotation shaft, a top rod lifting guide surface is arranged between the rotation shaft and the top rod lifting lower cam, the press rod lifting cam, the top rod lifting guide surface and the top rod lifting lower cam are fixed with the rack, the press rod rotation wheel, the rotation disc and the top rod rotation wheel are fixed with the rotation shaft and rotate with the rotation shaft, the press rod assembly is circumferentially arranged on the press rod rotation wheel, rotates in the same direction of the press rod rotation wheel and upwards and downwards moves relative to the press rod rotation wheel, a top rod assembly is circumferentially arranged on the top rod rotation wheel, rotates in the same direction of the press rod rotation wheel and upwards and downwards moves relative to the top rod rotation wheel, station holes are formed in the rotation disc and are arranged between the press rod assembly and the top rod assembly, the press rod lifting cam is connected with the press rod assembly so as to guide the press rod assembly to upwards and downwards move, and the top rod assembly is guided to upwards and downwards move between the top rod lifting guide surface and the top rod lifting low cam. The top rod assembly is used for positioning a lower end of a battery, the press rod assembly is used for stamping a shoulder part of the battery so as to reduce shoulder height, and the burst pressure of the battery is increased.