26results about How to "Improve cutting performance" patented technology

This invention belongs to the field of grinding disc manufacturing technology, specifically relating to a diamond positioning and implanted grinding disc and its manufacturing method. The grinding disc substrate undergoes a series of processes including degreasing and activation treatments, followed by basic nickel plating to form a base nickel plating layer. Then, using photolithography, a photosensitive dry film pattern with pre-drilled micro-holes is created on the surface of the nickel plating layer. Adhesive is then applied to fill the micro-holes, and diamond abrasive grains are implanted, ensuring the sharp corners remain upwards for initial fixation. Finally, the photosensitive dry film is removed, and a thicker nickel plating reinforcement treatment is performed, ensuring the diamond abrasive grains are firmly encapsulated by the nickel plating layer. This method utilizes photolithography to achieve precise positioning and uniform distribution of the diamond abrasive grains on the substrate surface, and through process control, maintains the abrasive grains in a favorable cutting posture with their sharp corners upwards, significantly enhancing the grain holding strength and effectively preventing loosening, collapse, or detachment. The resulting grinding disc exhibits superior cutting efficiency and stability.

The utility model discloses a kind of split type exploitation diamond composite sheet, belong to diamond composite sheet technical field, including diamond pedestal and diamond surface layer, the upper surface edge position of diamond surface layer is provided with wear-resistant arc-shaped back edge, diamond surface layer's upper surface middle position integrally has several cutting knives, several cutting knives are annular array and are arranged at the surface position of diamond surface layer, the two sides of cutting knife all have cutting bevel;By setting diamond pedestal and gold face layer cooperation assembly plug post and assembly bolt use, diamond pedestal and diamond surface layer split type design, after being inserted into assembly slot by assembly plug post, and using assembly bolt to assemble, diamond composite sheet of split type design can only dismount and replace diamond surface layer when appearing cutter body abrasion in use process, while retaining diamond base layer, it is convenient to dismount and replace, and can avoid the tediousness of dismounting diamond pedestal and affect operation efficiency.

This invention discloses a medium carbon steel for steering screws in new energy vehicles and its production method. The chemical composition of the medium carbon steel, by mass percentage, is as follows: C: 0.45%~0.70%, Si: 0.25%~0.55%, Mn: 0.45%~1.05%, Cr: ≤0.40%, Mo≤0.40%, Ni≤0.40%, P≤0.035%, S: 0.015%~0.035%, O≤0.0012%, with the balance being Fe and unavoidable impurities. The production method includes a complete process: molten iron pretreatment – ​​converter smelting – LF refining – RH furnace vacuum degassing – continuous casting – rolling – quenching and tempering – finishing – sub-critical quenching – low-temperature tempering. By controlling the composition to reduce the addition of expensive alloying elements, and through a composite heat treatment of "quenching and tempering + sub-critical quenching + low-temperature tempering," a hardness gradient of ≥60HRC on the surface and 22~28HRC in the core is achieved, with no decarburized layer on the surface. Simultaneously, strict control of non-metallic inclusions enhances the purity of the steel. This invention's product is compatible with cyclone milling processes, exhibits minimal quenching deformation, and can be straightened, meeting the high precision and long service life requirements of steering screws in new energy vehicles.

The utility model relates to the technical field of machining lathes, and discloses a cam transmission mechanism of a machining lathe, which comprises a screw rod, a pillow seat is sleeved on the screw rod in a threaded manner, a ram is mounted on the pillow seat and arranged on the lathe, a spline shaft is coaxially arranged at the end part of the screw rod, and the end part of the spline shaft is provided with a cam shaft. A rotating shaft is coaxially installed at the end, away from the lead screw, of the spline shaft, a motor is installed at the end of the rotating shaft, the rotating shaft is rotationally sleeved with a support through a bearing, and the support is installed on a lathe. The lead screw and the spline shaft are connected through an overload clutch mechanism. A cam transmission mechanism of a machining lathe solves the problems that in the prior art, when a cutter is abraded, the cutting effect of the cutter is poor, when a ram slides according to the running speed of a hydraulic cylinder, the abraded cutter can seriously affect the cutting speed of the cutter, and then the cutter is prone to being clamped when the ram runs. And both the motor and the hydraulic cylinder are damaged.

This invention discloses a free-machining high-strength aluminum-lithium alloy, its preparation method, and its applications, belonging to the field of alloy materials technology. The free-machining high-strength aluminum-lithium alloy has the following weight percentages of elements: Li: 3.5–5.5%, Cu: 2.6–3.1%, Zn: 6.8–7.1%, Mg: 2.1–3.0%, Y: 1.5–4.0%, Bi: 0.85–1.05%, In: 0.05–0.08%, Cr: 0.05–0.45%, Ti: 0.02–0.04%, with the balance being Al. This invention involves batching, smelting, refining, online refining, online degassing and filtration, casting, homogenization, extrusion, and two-stage aging treatment to finally obtain a free-machining high-strength aluminum-lithium alloy with a uniform microstructure. This invention has a reasonable component ratio, low manufacturing cost, and the resulting product has excellent strength and hardness, and exhibits excellent surface finish after dry machining.

The utility model relates to an oil exploitation drilling tool. The drilling tool comprises a drill body, three evenly-distributed cones, a PDC cutting structure and a plurality of auxiliary assemblies. The tooth wheel is composed of a tooth column and three layers of tooth palms, and coarse and fine layered crushing is carried out step by step, so that the drilling efficiency is improved. The PDC cutting structure is arranged at the end of the drill body and comprises a triangular prism, a column groove, a main blade, an auxiliary blade and a side blade, large-diameter PDC cutting parts are arranged on the main blade and the auxiliary blade, PDC cutting parts with the diameters gradually reduced are arranged on the side blade, the cutting effect is optimized, and the adaptability of the drilling tool in a hard rock stratum is enhanced. The adaptability of the drilling tool in soft and hard rock stratums is further improved through the small blades and the small-diameter PDC cutting pieces on the rectangular plate, and it is ensured that the drilling tool works stably and efficiently. The overall design effectively reduces the abrasion of the drilling tool, prolongs the service life, improves the drilling efficiency, and reduces the mining cost. The drilling tool is suitable for rock stratums with different hardness and has a wide application prospect in oil exploitation.

The utility model relates to the technical field of milling machining, concretely to line board precision milling cutter of replaceable tool bit, including tool bit and tool bar, the one end center of tool bit is installed with the plug -in rod, the side of plug -in rod is installed with the limiting rod perpendicularly, the upper end center of tool bar is seted up with the spigot, the side of spigot is seted up with the limiting mouth, when the plug -in rod is inserted with spigot and cooperates, limiting rod slides into the inboard of limiting mouth, and the both sides of tool bar are installed with the limiting component. In this line board precision milling cutter of replaceable tool bit, the plug -in rod is seted up in the one end center of tool bit, and the limiting rod is installed perpendicularly in the side, and the spigot and limiting mouth are seted up correspondingly in tool bar, and after the plug -in cooperation of both, limiting component will block limiting rod in limiting mouth. This structure design makes the tool bit replacement process extremely simple, only needs to insert the plug -in rod into the spigot, and promotes limiting rod to slide into limiting mouth, and can complete installation through limiting component fixedly, and when disassembling, reverse operation, and the tool bit replacement time is greatly reduced.

This utility model discloses a shredder and its cutting device. The cutting device includes at least one first cutter and at least one second cutter, both of which are connected to the rotating shaft of a drive mechanism. The first cutter has a first blade body extending along a first direction, and the second cutter has a second blade body extending along the first direction. The first and second blade bodies are staggered circumferentially along the rotating shaft, with the first blade body parallel to the first direction and the second blade body at an angle to the first direction. By setting an angle between the first and second blade bodies, the cutting device of this utility model offers multiple cutting angles, increasing the cutting range and enabling rapid and complete shredding of fruits and vegetables, effectively improving cutting efficiency and achieving better cutting results.

The application discloses a high-sulfur manganese free-cutting steel MnS inclusion modification preparation method and belongs to the technical field of steel metallurgy. The application forms fine and dispersed rare earth manganese sulfur oxides in the steel through a strict smelting process, and the rare earth manganese sulfur oxides serve as the nucleation core of MnS inclusions in the solidification process, so that the MnS is attached to the surface of the nucleation core to generate composite inclusions. The spheroidization of the rare earth inclusions can reduce the length-width ratio of the MnS inclusions, reduce the anisotropy of the steel, realize the modification of the inclusions and further improve the performance. Through LaMn alloy modification treatment, the morphology of the MnS in the high-sulfur manganese medium-carbon free-cutting steel is improved, the MnS is changed from a strip shape or a chain shape into a fine and uniformly distributed spherical shape or a near-spherical shape, stress concentration is effectively reduced, the Mn content in the steel is also improved, the steel is not infinitely intermingled with the matrix, and the mechanical performance and the cutting performance of the steel are significantly improved.

The present application relates to sewage treatment technical field, disclose a kind of membrane aeration biological membrane reactor's operating method and operating device, sewage treatment system.The operating method has at least one control cycle during the continuous operation of reactor, the cycle includes: pre-control step, provide negative pressure pulse to membrane assembly inside, the normal compressive stress directed to membrane silk inside is applied to the biological membrane attached to the outer surface of membrane, so that the microstrain of outer layer structure is generated;Fluidized cutting step, add and fluidize circulating cutting microparticles to reactor, and microparticles are rolled cutting to the surface of biological membrane under the driving of fluid.By the cutting action of cutting microparticle and negative pressure pulse, the outer layer of biological membrane is selectively stripped from invalid biomass.The present application realizes the fine control from inside to outside to biological membrane under the condition of not interrupting sewage treatment process, can long-term maintain biological membrane in thin, high-activity ideal mass transfer state, effectively solve the problem that mass transfer efficiency attenuates with operating time.

The application discloses a cutting temperature control system and control method for machine tool heating cutting, and the control system comprises a temperature detection module, a temperature control module comprising a cooling control submodule and a heating control submodule, a temperature prediction module for predicting the temperature of a cutting area, a temperature control scheme generation module for generating a temperature control scheme in a machine tool heating cutting process according to the result of the temperature prediction module, and a central control module for controlling the temperature control module according to the temperature control scheme generated by the temperature prediction module in the machine tool heating cutting process, so that the temperature of the cutting area is controlled in a preset target control temperature range T b of the cutting area. The temperature control scheme of the application has better synchronism, can avoid the lag of the actual temperature relative to the target temperature in the feedback control scheme, and can guarantee a longer tool service life and better cutting effect.

The invention provides free-cutting corrosion-resistant stainless steel and a preparation method thereof, and the free-cutting corrosion-resistant stainless steel comprises the following chemical components in percentage by weight: less than or equal to 0.12% of C, less than or equal to 1.0% of Si, 0.5%-2.0% of Mn, 13%-18% of Cr, less than or equal to 0.040% of P, less than or equal to 0.040% of S, less than or equal to The alloy comprises the following components in percentage by weight: 0.10%-0.40% of S, 1.5%-5.0% of Ni, 0.5%-3.0% of Mo, 0.001%-0.5% of Nb, 0.001%-0.5% of Ti, 0.0001%-0.02% of B, 0.1%-2.5% of Cu, 0.02%-0.08% of N and the balance of iron and inevitable impurities. The ferrite phase accounts for 10-50%, and the balance is the tempered sorbite phase; manganese sulfide in the free-cutting corrosion-resistant stainless steel is spherically separated out, and the problems that in the prior art, stainless steel is poor in transverse performance, corrosion resistance and cutting performance are solved.

The application discloses a split type shearing ram for blowout preventer, which comprises an upper shearing ram assembly and a lower shearing ram assembly. The upper shearing ram assembly comprises an upper shearing ram body, an upper shearing cutter body and a first clamping plate. The upper shearing cutter body is in concave-convex cooperation with the upper shearing ram body and is connected through a fastening screw. The upper shearing ram body is connected with a first ram shaft through the first clamping plate. The lower shearing ram assembly comprises a lower shearing ram body, a lower shearing cutter body and a second clamping plate. The lower shearing ram body is in concave-convex cooperation and sliding connection with the upper shearing cutter body. The lower shearing cutter body is in concave-convex cooperation with the lower shearing ram body and is connected through a fastening screw. Meanwhile, the cutting edge of the lower shearing cutter body corresponds to the cutting edge of the upper shearing cutter body. The lower shearing ram body is connected with a second ram shaft through the second clamping plate. The first ram shaft and the second ram shaft are located on the same horizontal line. The application has low maintenance cost, good shearing stability, reliable connection, convenient disassembly and assembly and strong shearing capacity.

This invention discloses a method for preparing tin-containing free-cutting steel ingots by vacuum induction smelting. The method involves preheating the alloy raw materials; vacuum melting the preheated alloy raw materials in a specific composition ratio; thoroughly mixing the vacuum-melted steel with graphite, ferrosilicon, ferromanganese, ferrophosphorus, ferromolybdenum, ferrisulfide, and metallic tin under an inert atmosphere to obtain a mixed steel liquid; pouring the mixed steel liquid into a mold and cooling it to room temperature to obtain the tin-containing free-cutting steel ingot. Through this method, the sulfide morphology in the free-cutting steel prepared by this invention is mainly spherical and spindle-shaped, with sulfides having an aspect ratio ≤3 accounting for more than 80%, thus possessing both good strength and machinability.

The utility model provides a forming die for a drill tail with a lug, which comprises two die blocks with the same shape, die cavities arranged on the two die blocks are oppositely arranged, the die cavities are arranged on the upper sides of the die blocks, and a convex part is arranged in the middle of each die cavity from top to bottom and is used for forming a chip groove and a cutting edge. Lug grooves are formed in the two sides of the die cavity respectively, and the die cavity is communicated with the lug grooves. Bidirectional punch forming of the self drilling screw is achieved through the modules designed in a mirror symmetry mode, left-right symmetry is guaranteed, forming deviation is reduced, the protruding parts form the chip grooves and the cutting edges to improve the self drilling cutting performance, the lug grooves are arranged to be used for forming clamping lugs of the self drilling screw, the self drilling screw with the lugs is formed through one-time punch forming of the modules, and production efficiency is improved.

The application provides a high-toughness ferrite-pearlite type non-quenched and tempered steel and a manufacturing method thereof, and the composition of the steel is as follows: C 0.35-0.42%, Si 0.35-0.45%, Mn 1.25-1.65%, P ≤0.010%, S 0.025-0.050%, Cr 0.10-0.30%, Nb 0.02-0.05%, Mo 0.010-0.050%, Ni 0.10-0.25%, Al 0.025-0.045%, V 0.10-0.30%, Cu ≤0.10%, Ti 0.010-0.040%, [N] 120-160ppm, [H] ≤1.0ppm, T.O ≤10ppm; the rest is Fe and inevitable impurity elements; the steel is combined with a controlled rolling and controlled cooling process, the ferrite content is increased, the strength and toughness are improved, the strength and toughness are matched, and the cutting performance is improved.

The utility model discloses a composite spiral blade die lettering knife which comprises a knife handle, a knife head is arranged at one end of the knife handle, three spiral taper planes are arranged on the surface of the head end of the knife head, and a spiral blade with a spiral angle of 3-10 degrees is formed between every two adjacent spiral taper planes, so that cutting force of a cutting edge can be dispersed, impact of the cutting edge is reduced, and the lettering efficiency is improved. The straight blade type reinforcing blade with the length of 0.02-0.05 mm and the included angle of 120-130 degrees is arranged at the position, at the tool nose, of the tool bit, so that the abrasion resistance and the strength of the tool nose can be enhanced, meanwhile, the machining precision can be guaranteed, and the tool bit is reasonable in structural design, high in precision, good in cutting effect, good in rigidity and high in durability, the tool nose is not prone to being damaged in the machining process, and the tool is not prone to being broken. The problem that an existing tool is abnormally broken due to low tool nose strength is solved, and the machining quality and the machining efficiency can be improved.

The application relates to the technical field of cutters, and discloses a ball end mill, which is characterized in that N peripheral cutting edges are arranged, a first edge gap and a second bottom end flank are arranged to form M bottom end cutting edges, and M is less than N, that is, the number of the bottom end cutting edges is less than the number of the peripheral cutting edges; the first edge gap is matched with a chip removal groove arranged on the bottom end cutting part to remove chips, the bottom end cutting part has a larger chip removal space, thereby avoiding chip accumulation and facilitating cutter heat dissipation; the first edge gap can reduce the manufacturing difficulty of the ball end mill; in addition, by limiting M to be less than N, the structural strength of the bottom end cutting part can be improved, the wear speed of the cutting edges is slowed down, the cutting performance of the ball end mill is improved, and the service life of the ball end mill is prolonged.

The invention provides a wafer edge dynamic trimming method and a wafer trimming device. The method comprises the following steps: placing a wafer on a carrying table; the height of the whole circle of the wafer is detected, and the offset L of the circle center of the wafer on the XY plane relative to the circle center of the carrying table is obtained; edge trimming is carried out, a cutter wheel makes contact with the edge angle of the annular step on the edge of the wafer so as to cut the edge angle into an arc-shaped notch, and it is avoided that colloid protruding points are accumulated on the edge of the annular step when the surface of the wafer is glued; the cutter wheel can move in the X direction and the Z direction, and the cutter wheel makes contact with the wafer at one end of the Y-direction diameter of the wafer; the feed amount of the cutter wheel is set by taking the circle center of the carrying table as a reference and is dynamically compensated based on the offset, the Z-direction compensation amount is a difference value between the whole circle height of the wafer and the circle center of the wafer, and the X-direction compensation amount is L * cos (a); the cutter wheel performs additional swing motion in the X direction to homogenize abrasion of the cutter wheel, and the additional swing range is smaller than the width of the cutter wheel. According to the technical scheme, wafer edge trimming is more uniform, and wafer edge breakage is reduced.

The utility model discloses a TCT straight knife in the field of straight knives, which comprises a knife handle and a cutting head integrally formed with the knife handle, the surface of the cutting head extends outwards to form an inclined cutting part, the surface of the cutting head extends outwards to form a chip removal part, the surface of the chip removal part sinks towards the inside of the chip removal part to form a chip removal groove, and the chip removal groove is formed in the surface of the cutting head. A chip removal groove is formed in the cutting head and extends in the inclination direction of the chip removal part, one end of the cutting head extends outwards to form a straight blade rod, the surface of the straight blade rod extends outwards to form inclined tool edge parts, and chip separation grooves are formed between the tool edge parts; according to the TCT straight cutter, the surface of the straight blade rod extends to form the inclined cutter edge parts and the chip separating grooves between the cutter edge parts, the cutting capacity and the chip discharging effect of the cutter are enhanced, the cutting process is smoother, the chip discharging grooves extend in the inclined direction of the chip discharging parts, cuttings generated in the cutting process can be rapidly discharged, and the cutting efficiency is improved. And cutter abrasion and machining surface quality reduction caused by chip accumulation are prevented.

The utility model discloses a combined type material crusher mechanical tooth convenient to install, including tooth head and tooth seat, one side of tooth seat is the welding surface, is used for welding tooth seat on the material crusher, and the other side of tooth seat upper portion is recessed inward, forms the assembly recess for placing tooth head of open top, and the first positioning through -hole of vertical through whole tooth seat is set up in tooth seat below assembly recess, and the second positioning through -hole of vertical through whole tooth head is set up on tooth head, and tooth head is installed in assembly recess, and its first positioning through -hole is communicated with second positioning through -hole, and installs nut to it through long head bolt and passes second positioning through -hole, first positioning through -hole and is fixed, guarantees the stability of whole after installation. The utility model has the advantages of simple structure, convenient installation and removal, greatly improves work efficiency etc.

A thread rolling plate for producing screws with self-locking and high cutting performance comprises a main thread plate and an auxiliary thread plate. A thread rolling part and a chip removal part are arranged on the main thread plate and the auxiliary thread plate. And the thread rolling part comprises a thread rolling groove and a thread rolling edge. The main tooth plate and the auxiliary tooth plate are provided with a collecting part, a shaping part, a first double-tooth groove and a second double-tooth groove. The first double alveolar socket includes a first alveolar socket, and a first plane. The second double alveolar socket includes a second alveolar socket, and a second plane. The first double-tooth grooves are formed in the constriction part and the shaping part. The depth of the first tooth groove is set to be smaller than the depth of the thread rolling groove, auxiliary cutting is formed on the surface of the self-tapping part, and the cutting performance of the screw is improved. The depth of the second tooth groove is the same as that of the tooth rubbing groove, the self-locking part is formed on the thread, the friction force between the screw and wood is increased, and the self-locking performance of the screw is improved.

The application discloses a precision grinding method for a cutter assembly, the cutter assembly and application, and the cutter assembly has a precision ground cutter head, cutter square and cutter rod, and the precision grinding method comprises the following steps: welding the cutter head to the end of the cutter square which is processed by grinding to form an integrated cutter; coarsely grinding the cutter by fixing the cutter on a coarse grinding seat, determining the zero point of the cutter head, adjusting the first grinding wheel based on the cutter band parameters and the first grinding parameters and the zero point to coarsely grind the two sides and the end of the cutter head, and obtaining left and right cutter surfaces and a coarsely ground auxiliary surface; finely grinding the cutter by fixing the cutter on a fine grinding seat, determining the cutter reference surface, adjusting the second grinding wheel based on the second grinding parameters and the zero point to finely grind the two sides of the cutter head, and obtaining left and right cutter bands; and adjusting and positioning the finely ground cutter by performing a planar finishing treatment on the finely ground cutter and adjusting the cutter to be fixed on the cutter rod according to a preset rotation radius. The application can stably and efficiently prepare the cutter with high precision, excellent blade geometry and surface quality.

The utility model discloses a mold anti-sticking ring machining cutter which comprises a cutter handle, a cutter head is arranged at one end of the cutter handle, four end teeth and four cutter grooves are arranged at the head end of the cutter head, each end tooth is provided with a front cutter face and a rear cutter face, and each end tooth is provided with two cutter rear corners with the outer circle facing inwards and the circle center facing outwards. Therefore, a main cutting edge with an included angle of 75 degrees is formed between the front tool face and the rear tool face, and the tool nose of each end tooth is provided with an arc with the radius of 0.02 mm. The device can be used for cutting the anti-sticking ring of the die, is high in precision, good in cutting effect, free of sticking to a cutter in the machining process, good in rigidity, high in durability and not prone to cutter breakage, improves the machining efficiency, can replace laser machining in a narrow space, can be used by a common numerical control machine tool, and completely meets the requirement for the surface roughness of the machined anti-sticking ring. The concentricity can be controlled within + / -0.005 mm, the appearance quality of products can be improved, and the total machining cost is greatly reduced.

The utility model discloses a kind of polycrystalline diamond composite cutting teeth and high-efficiency high bearing drill, cutting tooth includes hard alloy base body and polycrystalline diamond layer, hard alloy base body is connected by the arc surface portion of two ends and the straight surface portion between two arc surface portion and is made into capsule-shaped column structure;The end face of polycrystalline diamond layer away from alloy base body is working surface, working surface is plane or is equipped with at least one convex portion;Convex portion includes upper end portion and the transition surface between it and arc surface portion and / or straight surface portion;The layout of cutting tooth is optimized by straight edge design in the application, innovative "capsule-shaped" composite cutting tooth design is introduced, and the failure problem of high bearing drill in restricted space is systematically solved under the tooth distribution bottleneck and hard rock working condition. Cutting tooth of straight edge design can realize higher tooth distribution density, so that drill can effectively distribute load in narrow space, thereby significantly improve the cutting performance of key area, improve overall drilling efficiency.

The invention discloses a cylinder part precision honing in-place finishing device and method. The cylinder part precision honing in-place finishing device comprises a machine tool base, and a cylinder part is installed on the upper surface of the machine tool base through a positioning clamp; the transmission system corresponds to the cylinder part; the multi-oilstone honing head is connected to the output end of the transmission system; the ball screw type linear module is arranged in the vertical direction relative to the machine tool base and is connected with the high-precision displacement control system; the honing dresser is mounted on the ball screw type linear module and is arranged corresponding to the multi-oilstone honing head; a displacement measuring unit is arranged on the ball screw type linear module and used for measuring the spatial position of the honing trimmer. The multi-oilstone honing head in-place coaxial finishing device achieves in-place coaxial finishing of multiple oilstone honing heads, avoids positioning errors caused by disassembly and assembly, has the advantages of being high in reliability, high in finishing precision, good in repeatability, low in dependence on skills of operators and the like, and is suitable for industrial honing finishing of high-precision cylinder parts.