41results about How to "Dimensionally stable processing" patented technology

The invention relates to a thin-wall aluminum alloy material tube-shell part cutting processing heat treatment process which comprises the following steps: carrying out quenching and aging solution treatment by adopting a blank; improving the cutting property of a material; relieving stress by adopting aging heat treatment after rough machining; carrying out semi-finishing, and then carrying out the aging heat treatment to further relieve machining stress so as to ensure the stress inside a machined part is completely released; after turning is completed, carrying out low-temperature heat treatment for stabilizing machining size for the last time. Practices indicate that the heat treatment process method can be used for achieving the purposes of eliminating the machining deformation of the part and stabilizing the machining size and ensuring that the size accuracy and form and location tolerance of the part meet the technical requirements.

The invention discloses a cold heading sleeve processing process, which comprises the following concrete steps: (1) screening and inspecting blank materials, carrying out corresponding incoming inspection on the blanks according to the specification of a product, and selecting the blank materials with right size, wherein the blanks are round bar materials with the diameter of 39mm and the weight of 390g; (2) selecting and using a multistage cold former for direct cold heading form, and processing to obtain required product size through four times of cold heading; (3) turning excircle chamfering R1 of the blanks, and inspecting if the product is qualified or not after chamfering; (4) rough machining an inside groove reserved by the blanks, finishing machining the inside groove, and carrying out product inspection on the blanks after finishing machining the inside groove; (5) electroplating the blanks; and (6) packaging and storing the finished products after electroplating. For each product, the blank usage amount is saved by 231.9g, so that the cost is reduced by 37.29 percent, the processing difficulty is reduced, the consumption is reduced, the processing cost is saved, and meanwhile, the production efficiency is improved.

The invention discloses a processing method for an inner-ring-free cylindrical roller bearing alloy steel solid retainer, and relates to the technological field of bearings. The problems that after anexisting bearing retainer processing process, the working accuracy of a pocket hole of the bearing retainer and the surface roughness of the pocket hole do not reach the standard, and rolling surfacecan generate cracks in the lock opening rolling process are solved. The processing method comprises the following processes of lathe forming, hardening and tempering, rough grinding of the outer diameter, fine lathing of the two end faces, fine lathing of the inner diameter, even grinding of the two end faces, final grinding of the outer diameter, final grinding of the inner diameter, turning ofinner steps, marking, drilling, milling of square holes, pulling of the square holes, deburring, cleaning, stress relief annealing, glazing, lock opening rolling, dynamic balancing, magnetic powder inspection, silver plating, final inspection and packaging. According to the processing method, stress relief annealing is carried out before lock opening rolling is carried out, and the cracks generated by machining stress superposition and a surface cold hardening layer on the rolling surface are avoided. The processing method is suitable for processing the inner-ring-free cylindrical roller bearing alloy steel solid retainer.

The invention provides a double-faced milling mechanism, which belongs to the machinery technical field. The double-faced milling mechanism comprises a milling machine clamp, a first milling machine and a second milling machine arranged at two sides of the milling machine clamp, the milling machine clamp comprises a clamp assembly used for clamping a valve blank and an adjusting assembly arranged outside the clamp assembly and used for clamping valve blanks, the clamp assembly comprises a left side plate, a cover plate, a right side plate, and a bottom plated which are capable of encircling a frame form structure, at least an intermediate baffle plate which is vertically arranged is provided between the left side plate and the right side plate, two ends of each intermediate baffle plate are respectively connected to the cover plate and the bottom plate, the left side plate, the cover plate, the right side plate, the bottom plate and the intermediate baffle plate are capable of encircling at least two clamp chambers used for placing the valve blank; a first milling cutter used for milling the right side of the valve blank is vertically arranged on the first milling machine, a second milling cutter used for milling the back side of the valve blank is vertically arranged on the second milling machine. The double-faced milling mechanism has the advantages of reasonable design, high work efficiency and wide versatility.

An annular deep and narrow groove turning tool comprises a rough turning tool body and a finish turning tool body. The rough turning tool body and the finish turning tool body both comprise a tool handle, a tool bit arc, a tool bit front angle, a tool bit rear angle, a tool bit auxiliary rear angle, a tool bit auxiliary deflection angle, a front chamfer and a rear chamber, wherein the tool handles are arranged on the left sides of the turning tool bodies, the tool bit arcs are arranged on the forefronts of the turning tool bodies, the tool bit front angles are located at the most pointed ends of the arcs, the tool bit rear angles are located at the rear ends of the tool bit front angles, the tool bit auxiliary rear angles are located at the upper ends of the tool bit arcs, the tool bit auxiliary deflection angles are located below the tool bit rear angles, the front chambers are arranged at the lower ends of the tool bit arcs, the rear chamfers are arranged at the rear ends of the front chamfers, the tool bit arcs, the tool bit front angles, the tool bit rear angles, the tool bit auxiliary rear angles, the tool bit auxiliary deflection angles, the front chambers and the rear chambers form tool bit assemblies, and then the tool bit assemblies and the tool handles are welded and combined into a whole. By means of the annular deep and narrow groove turning tool, it can be guaranteed that the machining size is stable, the surface roughness is effectively improved, and the annular deep and narrow groove turning tool is simple in structure, low in machining cost and low in price.

The invention discloses a clamp for machining inside diameters and outer diameters of fixed ball races. The clamp can simultaneously machine the inside diameters and the outer diameters of a pluralityof fixed ball races; and the processed fixed ball races have good concentricity, high processing work efficiency and stable processing size. An underpan, connecting blocks and a briquette of the clamp are all circular; the connecting blocks and the underpan are concentric; the inside diameters of the connecting blocks are smaller than the inside diameter of the underpan; a part of connecting blocks are connected with the pan surface of the underpan; the other part of connecting blocks are respectively provided with two or more screw holes and two or more positioning pin mounting holes; the briquette is provided with two or more bolt connecting holes and two or more positioning pin connecting holes; one end of each positioning pin is tightly matched and connected with a corresponding positioning pin mounting hole; and the other end of each positioning pin is arranged in the corresponding positioning pin connecting hole; and each connecting bolt penetrates through a corresponding bolt connecting hole and is in threaded connection with a corresponding thread hole.

The invention discloses a five-axis machine tool with a tool magazine arranged in a stand column. The five-axis machine tool comprises a tool body. Two parallel stand column guide rail pairs are arranged on the middle portion of the tool body. The stand column is connected to the stand column guide rail pairs in a sliding manner. The stand column moves forwards and backwards on the stand column guide rail pairs through gear and rack pairs. Clamping mechanisms are arranged on the two sides of the tool body. Carriage guide rail pairs are arranged above the stand column. A carriage is connected to the carriage guide rail pairs in a sliding manner and is connected with a slide base through a linear guide rail pair. A five-axis head is arranged at the bottom of the slide base. A tool bit is detachably connected to the five-axis head. According to the five-axis machine tool with the tool magazine arranged in the stand column, the two clamping mechanisms are arranged on the two sides of the machine tool, the replacing and cleaning work of feeding and discharging can be conducted on a workpiece on the other side while a workpiece on one side is machined, and the machining efficiency is improved.

The invention relates to a hydraulic system for a thread roller. The hydraulic system mainly comprises a pressure meter, a pressure meter switch, a two-position four-way reversing valve, an oil return pipeline oil filter, a precision oil economizing valve, a pilot overflow valve, a vane pump, an oil suction port filter, an idle running adjustable mechanism, a piston and a spring. By means of the two-position four-way reversing valve of the hydraulic system, all hydraulic oil in an oil cylinder flows back to enable the piston to smoothly return to a rear stop point under the condition that 1DT loses power, and the control of the position limit switch over a 2DT is eliminated at the same time. The rear stop point adjustable mechanism is additionally arranged at the rear end of the oil cylinder, so that the position of the rear stop point where the piston returns is adjustable, and the idle running distance is reduced. The idle running adjustable mechanism is composed of a large nut, a small nut, a flat key, a handle and a screw. The handle is fixedly connected with the screw through the small nut and the flat key, and the large end of the screw is sleeved with the large nut. The hydraulic system for the thread roller is improved on the basis of an existing hydraulic system for the thread roller, the machining size is stable after the improvement, and the working efficiency is also greatly improved.

The invention belongs to the technical field of plastic materials, and concretely relates to a post-treatment method for an MC nylon material. The temperature of a movable oven and the starting temperature of a slow cooling device are all designed in a range of 150-190 DEG C, and the temperature range is close to the maximum temperature of polymerization of MC nylon and the temperature required for crystallization, so an MC nylon blank material has a certain temperature condition to continuously complete the crystallization process; the crystallization process of the MC nylon blank material isa slow process from heat absorption to heat release, and a corresponding slow cooling condition must be set to crystallize the MC nylon blank material completely and make crystals regularized, and slow cooling is carried out for several hours to 100 DEG C or less to meet the condition, so the obtained MC nylon composite material has stable high mechanical strength and good toughness; and the lowly cooled MC nylon composite material can be aged for several days to ensure the stability of the finish size, so the processing precision of the product is ensured, and the production efficiency is guaranteed.

The invention discloses a notching machine comprising a base and a motor, wherein the motor is connected with the base through a connecting plate; a saw blade shaft is driven by a belt on the motor; the front end of the saw blade shaft is fixed through a front bearing and a supporting seat, and the rear end is fixed by a rear bearing and a bearing seat; a saw blade is arranged on the top end of the saw blade shaft and fixed by a lock nut; a workpiece connecting shaft is matched and connected with a guide sleeve through a workpiece main shaft; the guide sleeve is fixed on the base through the connecting plate; the workpiece main shaft is fixedly connected with a mandril dividing mechanism and a lever feeding mechanism; and the mandril dividing mechanism and the lever feeding mechanism are directly connected and fixed with the base through bolts. The notching machine can realize the circumferential dividing notching, the feeding in a cutting direction and the regulation of the notch depth and has fast cutting and stable machining dimension.

The invention relates to a spiral steering clamp for a numerical control machine tool. The spiral steering clamp comprises a fixing plate and steering shafts. A positioning block is arranged at the position, close to the circle center, of the upper end face of the fixing plate. Multiple fixing blocks are evenly arranged at the positions, around the circle center, of the lower end face of the fixing plate. Cylindrical holes allowing the steering shafts to pass are formed in the middle portions of the fixing blocks. A pulling plate is arranged below the fixing plate in parallel. A pulling rod is vertically connected to the center of the lower end face of the pulling plate. The steering shafts vertically penetrate the pulling plate, the fixing blocks and the fixing plate from bottom to top. A pressing plate is installed at the upper ends, penetrating the fixing plate, of the steering shafts. Hexagon nuts are fixedly installed at the lower ends of the steering shafts. The portions, between the hexagon nuts and the lower end face of the pulling plate, of the steering shafts are sleeved with springs. Spiral rails are arranged on the side walls of the steering shafts. A guiding screw is horizontally installed on the side wall of one end of each fixing block. One ends of the guiding screws are embedded into the spiral rails and slide along the spiral rails along with movement of the steering shafts in the cylindrical holes. The spiral steering clamp has the beneficial effects that no displacement or tool vibration or deformation is generated in the machining process, and positioning is accurate.

The invention discloses an automatic control switch valve and a process method thereof. The automatic control switch valve is characterized in that a switch valve element is installed in a valve hole of a switch valve body; a first steel ball is installed on the left side of the switch valve body; a second steel ball is installed on the right side of the switch valve body; a straight through valve hole is formed in the switch valve body; a small-angle sealing cone face is designed on the right side of the switch valve body; a large-angle sealing cone face is designed on the left side of the switch valve body; a damping hole is designed in the switch valve body; the switch valve body is provided with a first O-shaped ring groove and a second O-shaped ring groove which are located in the two sides of the damping hole; and the switch valve element is designed into a sliding valve element with the large middle and the two small ends. The automatic control switch valve can be arranged in a sequence valve, a priority valve and a liquid charging valve in a plug-in mounting manner, and has the beneficial effects of being simple in structure, easy to machine and manufacture, stable in machining size, reliable in action, small in hydraulic impacting of a system and the like.

The invention relates to the technical field of deep hole machine tools, in particular to a numerical control large-diameter deep hole semi-fine boring head device. The semi-fine boring head device comprises a boring head body, a cutter body, a supporting strip compensation structure and a cutter body compensation structure, wherein the supporting strip compensation structure comprises a fixed piston, a driving part and a moving body, the fixed piston is fixed to the boring head body, the driving part can move in the axial direction of the boring head body, a supporting strip is installed on the moving body, and the moving body is movably supported on the boring head body; the driving part and the moving body are provided with conical surfaces which are matched with each other; and the cutter body compensation structure comprises a driving mechanism and a taper mandrel, a conical surface is arranged at one end of the taper mandrel, the cutter body can abut against the conical surface, and the taper mandrel axially moves to push the cutter body to move in the radial direction of the boring head body. According to the embodiment , the supporting strip and the cutter body can compensate the abrasion loss in the radial size, the consistency of front and back machining sizes of a workpiece is ensured, consumables for replacing the supporting strips are omitted, the machining size is stable, and deep hole machining of the inner hole size of phi 800-phi 1900 mm is smoothly carried out.

The invention relates to a machining clamp for an aluminum alloy control arm. The machining clamp comprises an underframe (1), a rotary table (2), a pneumatic clamping jaw (3) for locking the rotary table (2), four rotary clamping air cylinders (4), four supporting columns (5), a positioning column (6) and a pair of limiting tables (7). The rotary table (2) is installed on the underframe (1) through a rotary shaft. The pneumatic clamping jaw (3) is detachably installed on the underframe (1), and the rotary table (2) is locked through movement of the pneumatic clamping jaw (3). Pressing blocksare arranged on the rotary clamping air cylinders (4), the four rotary clamping air cylinders (4) and the four supporting columns (5) are all fixedly installed on the rotary table (2), and the pressing blocks of the four rotary clamping air cylinders (4) correspond to the four supporting columns (5) in position. The machining clamp for an aluminum alloy control arm has the advantages that: the tool is light and fast to rotate, and one time rotation does not exceed 15 seconds; the machining size is stable, fully meet the drawing precision requirement, and customers are satisfactory; 16 minutesare needed for machining one workpiece, the production efficiency is high, and the project target is achieved.

The invention discloses a heat treatment method of a thin-wall damage tolerance type TC4-DT titanium alloy part. The method comprises the following steps: 1) before machining, carrying out primary annealing heat treatment on the thin-wall damage tolerance type TC4-DT titanium alloy part, and then machining the thin-wall damage tolerance type TC4-DT titanium alloy part to enable the thin-wall damage tolerance type TC4-DT titanium alloy part to be in a semi-finish machining state; 2) putting the thin-wall damage tolerance type TC4-DT titanium alloy part in the the semi-finish machining state into a vacuum welding furnace for 1-2h for primary vacuum electron beam welding; 3) then putting the part into a semi-finish machining heat treatment tool, putting the tool into an annealing furnace forvacuum heat treatment, and carrying out primary vacuum heat treatment; 4) taking out the part, machining the part to enable the part to be in a finish machining state, and then putting the part into afinish machining heat treatment tool; 5) carrying out secondary vacuum heat treatment through the annealing furance for vacuum heat treatment. According to the method, the problem of stress deformation of the thin-wall damage tolerance type TC4-DT titanium alloy part during cutting machining is effectively solved, the machining size is stabilized, and it is guaranteed that the dimensional tolerance and the geometric tolerance of the part meet the technical requirements.