34results about How to "Guaranteed wall thickness uniformity" patented technology

The invention relates to a forming method of a hollow component. According to the technical scheme, the forming method of the hollow component comprises the following steps: step one, preparing a die, adding four anti-deformation structures on the die, and mounting a one-way valve on a punch; step two, placing an initial tube blank in a cavity of the die, closing the die and sealing ends; step three, filling a fluid medium inside the tube blank; step four, enabling the anti-deformation structures to move oppositely; and step five, retracting the anti-deformation structures to initial positions, repeating the step four and the step five to form a component in the required shape, relieving internal fluid pressure, opening the die, and taking out a part. The anti-deformation structures are arranged in the die, so that a petal shape is repeatedly and accumulatively used, while the rolling effect of friction is eliminated, forming pressure is reduced, the breakage defect is avoided, and uniformity of the wall thickness is improved.

The invention belongs to the precise investment casting technology and relates to a method for controlling aero-engine hollow guide blade upper edge plate cavity wall thickness. The method is characterized in that the hollow guide blade upper edge plate wax pattern cavity wall thickness is changed to control casting cavity wall thickness, the front edge of the core body (3) of a ceramic core (7) is allowed to tilt towards a non-runner face, and the included angle alpha of the lower surface (11) of the core body (3) and the runner face (10) of a hollow guide blade upper edge plate wax pattern is allowed to range from 0 degree 30 minutes to 1 degree. By the method, hollow guide blade upper edge plate casting wall thickness evenness at hollow parts is guaranteed, design drawing requirements are satisfied, oversize and scrap are avoided, production yield is increased, and production cost is lowered.

The invention relates to the technical field of spinning pressing forming, in particular to a spinning pressing forming method of a deep conical thin-walled rotary part with a flange. The method comprises the following steps of determining the number of times of spinning pressing, and working out the sizes of a circular flat plate blank according to the volume, turning allowance and spinning pressing forming allowance of the blank which is already subjected to the last time of spinning pressing forming and the equal volume principle; determining the process parameters of a spinning wheel and multi-section core dies during each time of spinning pressing according to the wall thickness and half taper angle of the blank during each time of spinning pressing forming, wherein the rotating speeds of the core dies are sequentially reduced from the small-diameter end of the core dies to the large-diameter end of the core dies; carrying out spinning pressing on the corresponding core dies withthe number of times of spinning pressing starting from 1 to n to gradually reduce the wall thickness or half taper angle of the blank until the blank formed after the last time of spinning pressing forming is obtained; and carrying out turning on the blank which is formed after the last time of spinning pressing forming. The spinning pressing forming method of the deep conical thin-walled rotary part with the flange is suitable for alloy materials, and the sectional and different rotating speeds of the core die are designed to ensure the wall thickness forming uniformity of the part.

The invention belongs to the technical field of mechanical processing and manufacturing, and discloses a method for manufacturing a super-long thin-walled aluminum alloy sandwich grid rib double-skin integral tail, comprising: adopting ZL205AA high-strength aluminum alloy to form the integral tail; The integral tail is heat treated; the heat treated integral tail is processed by numerical control. The manufacturing method of the super-long thin-walled aluminum alloy sandwich grid rib double-skin integral empennage provided by the present invention can improve the overall quality of precision molding and manufacturing, reduce the manufacturing cost and shorten the manufacturing cycle.

A universal die for closed special-shaped pneumatic component forming and shape correcting comprises a first upper die body (1), a second upper die body (2), a first lower die body (3), a second lowerdie body (4) and a material supplementing device (5). Forming grooves are machined in the middles of the first upper die body (1), the second upper die body (2), the first lower die body (3) and thesecond lower die body (4). The first upper die body (1) and the second upper die body (2) are spliced on the side face to form an upper die. The first lower die body (3) and the second lower die body(4) are mutually spliced on the side face to form a lower die. After the upper die and the lower die are spliced, the forming grooves of the first upper die body (1), the second upper die body (2), the first lower die body (3) and the second lower die body (4) are consistent with a to-be-machined component in appearance. The material supplementing device (5) is installed at the tail end of the forming groove of the second lower die body (4). According to the universal die, precise hot forming and shape correcting of a special-shaped pneumatic component are guaranteed, the formed special-shapedpneumatic component is stable in quality, the size precision, the profile precision and the surface quality are high, and later local shape correcting can be finished.

The invention provides a special-shaped ceramic antenna cover machining device and method. The device comprises a head cone supporting ring, an inner molded surface aligning ring, end face pressing plates and a plurality of outer supporting mechanisms. Each outer supporting mechanism comprises an outer support and an adjusting screw rod, and the inner molded surface aligning ring comprises an insertion end and a fixed end. According to the device and method, the machining reference of an antenna cover is determined through a primary alignment tool, it is guaranteed that the position of a clamping space of the antenna cover in all working procedures is free of deviation, the machining reference is unified, and the machining precision is effectively controlled.

The invention discloses an air cylinder clamp. The air cylinder clamp comprises a base, spindle hole semicircular location blocks, clamping units and a cylinder hole slider linkage opening unit. Location end surface matched with to-be-located air cylinder front and rear stop spindle semicircular holes are arranged on the spindle hole semicircular location blocks. The clamping units are arranged on base location bosses on the inner sides of the spindle hole semicircular location blocks and comprise clamping supports, T-shaped screw pairs and clamping pressing blocks. A middle block bearing stop location block is provided with air cylinder bearing block location sides. The cylinder hole slider linkage opening unit comprises a base column and a cylinder hole slider component arranged at the top end of the base column. The air cylinder clamps clamp the air cylinder from the end and the sides, the measurement probe spot measurement function of a machining center spindle is used for finding reference coordinate values of machining of air cylinder process location pin holes, and accordingly, accurate machining of air cylinder process location pin holes is achieved, and the air cylinder hole wall thickness uniformity is guaranteed finally.

A rotor assembly, comprising an impeller and a rotor, the impeller and the rotor are separately injection molded, the injection molding material of the rotor includes a magnetic material, and the injection molding material of the impeller does not include a magnetic material; the impeller includes a first matching part, the The rotor includes a second matching part, the impeller and the rotor are arranged through the first matching part and the second matching part, and are relatively fixed by the fixing device; in this way, the impeller and the rotor can be made of different materials, and the impeller can use common plastic materials, which can Reduced manufacturing material costs for rotor assemblies.

The invention relates to a hot reverse extrusion forming method for a titanium alloy cup-shaped part, and belongs to the technical field of hot reverse extrusion forming technologies. The machining method comprises the steps of placing a heated blank into an extrusion container to be subjected to reverse extrusion one-time forming by utilizing the guide positioning action of a material pressing insert, and the roughing blank making step in the forming process of the cup-shaped part is omitted. The material pressing insert guarantees that lugs of the cup-shaped part are flush through the tension action of a back pressure spring; and meanwhile, because a floating male die is in linkage with the back pressure spring with higher back pressure tension, it is achieved that the cup-shaped part can be demolded smoothly after being formed. With the hot reverse extrusion forming method for the titanium alloy cup-shaped part, the phenomenon that in the traditional reverse extrusion process, because one single unloading spring is overhigh in back pressure, the material of a wall of a cup-shaped part flows inwards sharply to tightly hold a male die, and demolding is difficult to carry out is avoided, and meanwhile the reverse extrusion forming force is reduced, and the requirement on equipment tonnage is lowered; and additionally, because a titanium alloy cup-shaped force piece is formed atone time by adopting reverse extrusion in the preparation process, the step of roughing blank prefabrication in the existing technology is omitted, the production period is shortened, the manufacturing cost is reduced, and the economic benefit is greatly improved.

The invention provides a machining method of an elongated thin-wall aluminum-based composite material pipe with uniform wall thickness. The machining method comprises the following steps that firstly,rough turning is carried out on an outer circle of the aluminum-based composite material pipe; secondly, destressing heat treatment is carried out, then an inner hole is roughly bored by using a special tool, then destressing heat treatment is carried out again, then destressing heat treatment is carried out after the outer circle of the aluminum-based composite material pipe is subjected to semi-finish turning, then a special tool is used for finely boring the inner hole, and finally finish turning is carried out on the outer circle. According to the machining method of the elongated thin-wall aluminum-based composite material pipe with the uniform wall thickness, the large length-diameter ratio thin-wall pipe can be produced, and the wall thickness uniformity, straightness and coaxiality can be guaranteed.

The invention discloses a preparation method of a cup-shaped flexible wheel and a device thereof. A circular slab is tightened at the end of a core die by a tail top. A positive wire of a pulse powersupply is connected with the core die, and a negative wire is directly connected with each rotary wheel of a rotary wheel assembly. The circular slab is first spun and deformed into a cup-shaped workpiece with both inner and outer walls being straight walls by one rotary wheel. Then the cup-shaped workpiece is spun and deformed into two thickened cup-shaped workpieces with different straight wallthickness by another two rotary wheels, and a thicker smooth section is used as a tooth profile reserved section. Finally, the tooth profile reserved section is spun by one toothed rotary wheel to form a circle tooth profile around the outer circumference. At last, a small amount of cutting process is carried out to complete the processing process from the circular slab to the cup-shaped flexiblewheel workpiece. According to the cup - shaped flexible wheel manufacturing process based on plastic forming, streamline formed in the process of deformation can be completely retained, and the service life of parts is prolonged advantageously. The advantage of the method is more obvious for flexible wheels with an extremely small thickness.

The invention discloses a tube expanding method of a quartz tube. The tube expanding method comprises the following steps that firstly a main quartz tube is arranged on a left clamping head and a right clamping head of a tube expanding machine; a blowlamp device on a middle tray device of the tube expanding machine is started, and simultaneously the left clamping head and the right clamping head rotate synchronously to drive the main quartz tube to rotate; in rotation, the local part of the main quartz tube is heated, the heated part of the main quartz tube is in a semi-melted state, and the main quartz tube in the semi-melted state expands outwards under the action of centrifugal force generated by rotation; under the action of a tube-expanding supporting wheel on the middle tray device, sizing is carried out; after being sized, the tube is transferred to a cutting machine to cut off waste materials clamped at the two ends. The tube expanding method disclosed by the invention has the advantages that since a cold water tank is arranged on the middle tray device, the diameter of the quartz tube after being expanded can be fast and accurately maintained; since the special blowlamp device is arranged in tube expansion, the working efficiency of tube expansion and the tube expanding quality are improved, the gas blowing noise is reduced, the gas inflow is reduced, the air contact opportunity is increased, the use efficiency of gas is improved and the energy is saved.

The invention discloses a toilet sewage discharging structure. The toilet sewage discharging structure comprises a tank and a trap which is communicated with the tank; the tank comprises a funnel-shaped tank main body and a water storage connecting pipe which is communicated with the bottom of the tank main body; the trap comprises a water inlet pipe, a trap main body and a second water outlet pipe which are connected in turn. The toilet sewage discharging structure had the advantages of being high in sewage discharging capability and convenient to maintain.

The present invention proposes a manufacturing process for a high-precision welding-free special copper coil, which includes the following steps: step 1, selecting high-purity cathode copper as a raw material to produce a blank tube, and making high-volatile drawing oil for use; step 2, using raw materials The produced blank tube is stretched with high volatile drawing oil, and the elongation coefficient of each stretch is controlled between 1.3-1.5, and after 7-9 passes of stretching, the semi-finished product is obtained; step 3, the stretched semi-finished product is obtained. For annealing, the annealing method adopts low-temperature annealing method; step 4, in the annealing process, inert gas is used for purging, and the purging method is that a vent pipe is connected to the outer port of the semi-finished product, and the inert gas is blown to the inner wall of the semi-finished product through the vent pipe. Sweep to obtain the final product, whereby the present invention has the advantages of being able to carry out the welding-free connection of the copper coil through the improvement of raw materials and technology, and at the same time ensuring the degree of fit.

The invention relates to a processing method of a large-scale thin-wall cabin shell body. The processing method comprises the steps of 1, reserving a criterion boss on the shape of the shell body when casting the shell body, conducting rough machining on the lineation criterion, leveling a front and back end surfaces of the shell body, and conducting rough machining on the front and back end surfaces of the shell body; 2, conducting rough machining on shape and an inner cavity of the shell body according to the processing criterion in the step 1, conducting aging treatment after the rough machining, and detecting form and location tolerance deformation quantities of the shell body before and after the aging treatment; 3, analyzing remaining quantities of various parts of specially shaped end of the shell body according to a deformation rule of the shell body, judging whether there is a need to borrow quantity, finishing semi-finishing on the shape and the inner cavity of the shell body, and conducting aging treatment after the semi-finishing; 4, detecting the form and location tolerance deformation quantities before and after the aging treatment of the shell body in the step 4, further figuring out the deformation rule of the shell body, and finishing finish machining of the shell body; 5, finally detecting all the sizes of the shell body and storing the shell body into a storage after the shell body is qualified. The invention also relates to a clamp used according to the method. The processing method can improve sharply processing efficiency, guarantee the quality of a product, causes a small processing deformation, and can guarantee the homogeneity of shell wall thickness.