Manufacture

Machining of drilling machine spindle The drill spindle is the core component of a drilling machine, driving the drill bit and transmitting torque. Its structural features include a tapered hole (for mounting the drill bit’s tapered shank), a shoulder, threads, and a keyway. Made primarily of 45 steel or 40Cr, it undergoes a quenching and tempering treatment (220-250 HBW) followedMore

Basic tooth profile size parameters of bevel gears The basic bevel gear tooth profile refers to the standard tooth shape found on the developed surface of the back cone at the large end of a bevel gear. It serves as the foundation for bevel gear design and manufacturing. my country’s national standard GB/T 12369-1990 specifies the basic tooth profile parametersMore

Machining of cast iron bevel gear seat Cast iron bevel gear seats are supporting components of bevel gear transmission systems, used to secure the bevel gear shaft and maintain its installation angle. They are typically made of gray cast iron (HT250, HT300) or ductile iron (QT500-7). After aging, they achieve a hardness of 180-230 HBW, providing sufficient rigidity and wearMore

Machining of cast iron grinding head sleeve The cast iron grinding head sleeve is a key component of the grinding machine’s spindle system, used to support the grinding head spindle and ensure its rotational accuracy. It is mostly made of high-phosphorus cast iron (HT300-HT350) or alloy cast iron. After aging treatment, its hardness reaches 180-220 HBW, and it has excellentMore

Machining of cast iron shaft bracket A cast iron symmetrical shaft bracket is a supporting component consisting of two symmetrical halves connected by bolts. It is widely used to secure rotating components such as machine tool spindles and drive shafts. Made primarily of gray cast iron (HT250, HT300), it offers excellent rigidity and shock absorption. This component’s structural features includeMore

Machining of cast iron thin-walled step sleeve Cast iron thin-walled stepped sleeves are cast iron sleeves with multiple steps and a wall thickness to inner diameter ratio of less than 1:20. They are commonly used in machine tool guide rails, pump bodies, valves, and other equipment for guiding, sealing, or supporting functions. Mostly made of gray cast iron (HT200, HT300)More

Winding of convex coil springs A convex coil spring is a non-cylindrical spring whose effective coil diameter gradually increases from both ends to the center, forming a drum-like shape. It features strong load-bearing capacity, uniform stiffness, and excellent cushioning properties. It is widely used in automotive suspensions, mechanical equipment, and shock absorbers. Coiling convex coil springs is more difficult thanMore

Machining of long step sleeve Long-step sleeves are sleeve-like components with a length-to-maximum-diameter ratio greater than 5 and multiple stepped holes or outer diameters. They are widely used in machine tool spindle boxes, reducers, hydraulic valve blocks, and other equipment for support, positioning, and sealing. Their structural characteristics are long axial dimensions, numerous steps, and high coaxiality requirements between theMore

Clamping irregular parts on angle iron Clamping irregular parts on angle iron is a common clamping method in machining. It’s suitable for parts with irregular shapes that can’t be directly clamped using three- or four-jaw chucks, such as brackets, housings, and flanges. The rigid support provided by the angle iron and the tightening action of bolts ensure stability during machining.More

Names and calculations of various parts of a cone A cone is a geometric solid consisting of a conical surface and a base. In mechanical manufacturing, cone fits offer advantages such as high centering accuracy, easy disassembly, and the ability to transmit high torque. They are widely used in tools, molds, instrumentation, and other fields. Understanding the names, definitions, andMore

Machining of tapered workpieces Conical workpieces are a common component type in mechanical manufacturing, widely used in machine tool spindle tapers, tool shanks, valve spools, and other mating parts. They rely on the tight fit of the conical surface to achieve positioning and sealing. Machining conical workpieces is more difficult than turning cylindrical workpieces, requiring guaranteed taper accuracy, dimensional precision,More

Cylindrical worm and worm wheel precision The precision of cylindrical worms and worm wheels is a key indicator for ensuring the stability, load-bearing capacity, and service life of worm transmissions. my country’s national standard GB/T 10089-2018 categorizes this precision into 12 grades, with Grade 1 being the highest and Grade 12 being the lowest. Commonly used precision grades range fromMore

Cylindrical gear precision grades and their selection The accuracy grade of cylindrical gears is a core indicator of gear transmission quality, encompassing aspects such as accuracy in motion transmission, smooth transmission, uniform load distribution, and backlash. my country’s national standard GB/T 10095.1-2008 categorizes cylindrical gear accuracy into 13 grades: 0, 1, 2, and so on, with Grade 0 being theMore

Product code representation method for non-ferrous metals and their alloys Product codes for nonferrous metals and their alloys are crucial identifiers for identifying their composition, properties, and uses. China’s national standard GB/T 340-2008 standardizes these codes. Through a combination of letters, numbers, and symbols, these codes clearly reflect the material’s category, grade , state, and product form, providing a standardizedMore

Using an eccentric chuck to turn an eccentric workpiece Using an eccentric chuck to turn eccentric workpieces is an efficient and precise machining method suitable for mass-produced parts with one or more eccentric journals, such as eccentric shafts, crankshafts, and cams. By adjusting the eccentricity, an eccentric chuck can quickly clamp eccentric workpieces of varying specifications, eliminating the tedious, multipleMore

Machining special-shaped surfaces with forming turning tools Using a forming tool to turn contoured surfaces is a highly efficient forming process. By grinding the tool’s cutting edge to a shape that perfectly matches the contour of the workpiece’s contoured surface, the desired surface can be produced in a single pass. This method is suitable for mass-produced parts with regular curvedMore

Carbide welding turning tool Carbide welded turning tools are a common tool type in machining. They consist of a carbide insert welded to a conventional carbon steel shank. They combine the high wear resistance of carbide with the toughness of the steel shank and are widely used in turning a variety of materials, including steel, cast iron, and non-ferrous metals.More

Whirling thread milling Thread whirling milling is a highly efficient thread processing method. Multiple carbide cutters mounted on a high-speed rotating cutterhead perform a whirling motion around the workpiece, rapidly forming the thread. Its efficiency is 5-10 times that of conventional turning, making it widely used in the mass production of long threaded parts such as lead screws, screws, andMore

Processing characteristics of slender shafts Slender shafts, a typical difficult-to-machine component in mechanical manufacturing, are characterized by poor rigidity, easy deformation, and difficulty in precision control. These characteristics stem from their large aspect ratio (typically L/d > 20), making mechanical and thermal deformation difficult to control during machining. This requires a different process than that used for conventional shaft parts.More

Common Defects and Their Prevention in Machining Slender Shafts Slender shafts, defined as shaft parts with an aspect ratio greater than 20, are widely used in equipment such as machine tool spindles, hydraulic piston rods, and rollers in textile machinery. Due to their poor rigidity and susceptibility to deformation, defects such as bending, vibration, taper, and bamboo knots often occurMore

Milling straight rack A spur rack is a rack with a tooth line parallel to the axis. It can be considered the expanded form of a spur gear with infinite diameter. It works with spur gears to convert linear motion into rotational motion. It features a simple structure, high transmission efficiency, and ease of manufacturing, making it widely used inMore

Milling bevel rack A helical rack is a rack with a tooth profile that forms a fixed angle with the axis. Used in conjunction with helical gears, it can transmit motion and power between intersecting axes. It features smooth transmission, high load capacity, and high contact ratio. It is widely used in machine tool feed mechanisms, automated production lines, andMore

Milling tooth clutch A sharp tooth clutch is a key component in mechanical transmissions that enables rapid connection and disconnection between shafts. Its structural characteristics are characterized by evenly distributed triangular teeth on the end faces, with a pointed tooth profile and straight tooth flanks. It is commonly used in applications requiring frequent direction changes, such as machine tool spindlesMore

Machining of large tin bronze rectangular lead screw nuts Large rectangular tin-bronze lead screw nuts are key transmission components in heavy-duty machine tools, presses, and other equipment. Typically made of ZCuSn10Pb1 (containing 10% tin and 1% lead), they exhibit excellent wear resistance, friction reduction, and castability, maintaining good lubrication properties under low-speed and heavy-load conditions. These nuts are characterized byMore

Worm turning and measuring methods A worm is a key component for transmitting intersecting axis motion and power. It forms a worm drive mechanism in conjunction with a worm wheel, boasting a high transmission ratio, compact structure, and smooth operation. It is widely used in machine tools, lifting machinery, textile machinery, and other equipment. Worms have a helical tooth profileMore

Copper and its alloys are among the earliest metal materials used in human history. Their excellent electrical and thermal conductivity, ductility, and corrosion resistance have secured them an irreplaceable position in the electronics, electrical engineering, machinery, aerospace, and other fields. Pure copper, also known as red copper, is purple-red in color and typically has a purity exceeding 99.5% . ItMore

Self-aligning ball bearings Self-aligning ball bearings are rolling bearings with double-row balls and a spherical outer ring raceway. Their structural features include a spherical outer ring raceway, and a spherical inner ring and rolling elements that can have a certain angular offset relative to the outer ring (usually allowing an angular deviation of 1°-2.5°). These bearings can automatically compensate forMore

Trapezoidal thread processing method The processing method of trapezoidal threads needs to be selected based on thread accuracy, pitch size and production batch. Its processing difficulty is higher than that of triangular threads, mainly reflected in the deep tooth profile, large cutting force, and easy vibration. Commonly used processing methods include low-speed turning, high-speed turning, milling and grinding. Each methodMore

Basic dimensions of trapezoidal threads Trapezoidal threads, a primary type of transmission thread, are widely used in equipment such as machine tool lead screws, jacks, and presses. Standardization of their basic dimensions is essential for ensuring transmission accuracy and interchangeability. The national standard GB/T 5796.1-2005 specifies the basic thread profile, diameter, pitch, thread height, and tooth width of trapezoidal threads.More

Machining of special-shaped surfaces Special-shaped surfaces refer to complex, non-circular, non-linear surfaces on mechanical parts, such as spheres, ellipsoids, paraboloids, and surfaces of revolution. These surfaces are widely used in molds, instrumentation, hydraulic components, and other fields. Machining these surfaces requires ensuring contour accuracy (≤0.01mm) and surface quality (Ra ≤0.8μm), a challenge in machining. The main difference between turning special-shapedMore

Machining of carbon structural steel curved handles Curved handles made of carbon structural steel (such as Q235 and 45 steel) are widely used in machine tool operations, medical devices, fitness equipment, and other fields. Their structural characteristics are characterized by complex spatial curved profiles (such as arcs, cycloids, and helices), high surface roughness requirements (Ra ≤ 1.6μm), and the needMore

Machining of titanium alloy step sleeve Titanium alloy step sleeves are key components in aerospace, medical devices, and other fields. Their structural characteristics are multiple stepped holes and outer diameters of varying diameters. Their walls are typically thin (1-5mm), requiring high machining precision (dimensional tolerances of IT6-IT7, with geometric tolerances ≤0.01mm). Titanium alloys inherently possess high strength, high toughness, lowMore

Plastic turning tools Plastic turning tools are specialized cutting tools designed for the specific properties of plastic materials. Due to the low hardness (60-120 Shore A), high plasticity, and low thermal conductivity of plastics, turning operations differ significantly from metal machining. These tools require sharp cutting edges, low friction, and excellent chip evacuation to prevent defects such as plastic melting,More

Double row tapered roller bearings Double-row tapered roller bearings are rolling bearings capable of supporting both radial and bidirectional axial loads. Their structural characteristics include two rows of tapered rollers and a shared inner or outer ring. The rollers maintain linear contact with the raceway, resulting in a significantly higher load capacity than ball bearings. They are widely used inMore

Machining of deep hole workpieces Deep-hole workpieces typically have a depth-to-diameter ratio (aspect ratio) greater than 5. They are widely used in machine tool spindles, hydraulic cylinders, gun barrels, and other applications. Deep-hole turning is a challenging process in machining due to its deep hole depth, difficult chip evacuation, poor cooling, and poor rigidity. Deep-hole turning requires not only dimensionalMore

Machining of triangular threads As the most widely used thread type in mechanical connections, triangular threads require precise turning of parameters such as thread angle, pitch, and pitch diameter to ensure reliable connections and interchangeability. Triangular threads can be categorized by thread angle as standard threads (60°), imperial threads (55°), and pipe threads (55°). Standard threads (such as M10×1.5) areMore

Processing characteristics of thermal spray coatings Thermal spray coatings are functional coatings formed by heating the spray material to a molten or semi-molten state using a heat source such as flame, arc, or plasma, and then spraying it onto the workpiece surface at high speed. They exhibit excellent properties such as wear resistance, corrosion resistance, and high temperature resistance, andMore

Precautions for crankshaft turning As a core transmission component in internal combustion engines, compressors, and other equipment, the crankshaft’s turning quality directly impacts the overall machine’s operating accuracy and service life. The crankshaft’s complex structure, comprising multiple components such as the main journal, connecting rod journal, and crank arm, is also eccentric, making it prone to vibration and deformation duringMore

Principles for selecting cutting parameters Cutting parameters refer to the three parameters of cutting speed, feed rate, and depth of cut during the cutting process. They directly affect machining quality, production efficiency, and tool life, and are the core content of cutting process development. The selection of cutting parameters must follow certain principles. While ensuring machining quality, it is necessaryMore

Normal thread tolerances Common thread tolerances refer to the allowable range of variation in various thread parameters and are crucial technical indicators for ensuring the interchangeability and performance of threaded connections. These tolerances include pitch diameter tolerance, top diameter tolerance, pitch tolerance, and thread angle tolerance. Pitch diameter tolerance is the core of common thread tolerances, directly impacting thread fitMore

Common thread measurement method As the most commonly used thread type in mechanical connections, the measurement method for common threads is directly related to the reliability and interchangeability of threaded connections. Common thread measurement primarily involves testing dimensional accuracy, form and position accuracy, and surface quality. Dimensional accuracy is the core, involving key parameters such as pitch diameter, top diameter,More

Machining of eccentric parts An eccentric part refers to a part in which the axis of the outer circle or inner hole of the workpiece is eccentric to the reference axis. It is widely used in machine tools, engines, pumps and other equipment, such as eccentric shafts, eccentric sleeves, crankshafts, etc. The size of its eccentricity directly affects the movementMore

Mechanical Polishing Polishing is a precision machining process that uses mechanical, chemical, or electrochemical methods to remove minute amounts of material from a workpiece’s surface to improve surface finish and reduce surface roughness. It is widely used in mold manufacturing, precision instruments, aerospace, and other fields, achieving precision levels down to nanometers and surface roughnesses as low as Ra0.01μm orMore

Machining of difficult-to-cut materials Difficult-to-cut materials generally refer to materials with high strength, high hardness, high toughness, or high wear resistance, such as high-temperature alloys, titanium alloys, stainless steel, high-strength steel, and composite materials. These materials present problems such as high cutting resistance, high cutting temperatures, rapid tool wear, and poor surface quality during turning, placing extremely high demands onMore

Machining of aluminum and its alloys Aluminum and its alloys are widely used in aerospace, automotive, and electronic equipment due to their low density, high strength, corrosion resistance, and excellent thermal conductivity. Compared to materials like steel and cast iron, turning aluminum and its alloys present unique characteristics and requirements. Aluminum and its alloys have relatively low strength and hardnessMore

Machining of threaded workpieces Threaded workpieces are basic parts widely used in mechanical manufacturing, including bolts, nuts, screws, pipe fittings, etc. Their turning processing needs to ensure the dimensional accuracy, form and position accuracy and surface quality of the threads to meet functional requirements such as connection and transmission. The turning characteristic of threaded workpieces is that there is aMore

Thread turning amount Thread turning parameters are a key factor in determining thread machining quality, efficiency, and tool life. These parameters primarily include cutting speed, feed rate, and depth of cut. These three parameters are interrelated and mutually influential, requiring proper matching based on thread type, workpiece material, tool material, and machining precision requirements. Cutting speed, the linear velocity ofMore

Machining technology of six-turn crankshaft As a core component of multi-cylinder internal combustion engines and compressors, six-turn crankshafts are characterized by complex structures, poor rigidity, and high machining precision. Their machining process involves multiple types of work and complex procedures, requiring strict quality control at every stage to ensure the crankshaft’s performance. The six-turn crankshaft’s structure features six crank throwsMore

Models and basic parameters of indexable inserts Indexable inserts, a core component of modern metalcutting tools, offer advantages such as high efficiency, long life, and excellent interchangeability. They are widely used in turning, milling, drilling, and other machining processes. The indexable insert model is a standardized identifier for its various parameters. The model number provides a quick overview of keyMore

The process of precision screw As a key transmission component in machine tools, instruments, and other equipment, precision screws are manufactured with a process that directly impacts transmission accuracy, rigidity, and service life. Precision screws typically require high dimensional accuracy (e.g., pitch error within 0.01mm/300mm), geometric accuracy (e.g., straightness within 0.02mm/m), and surface quality (surface roughness Ra ≤ 0.8μm). Therefore,More

Reamer toothing A reamer is a tool used for finishing and semi-finishing holes. Its main function is to improve the dimensional accuracy and surface quality of the hole and reduce the surface roughness of the hole. The toothing of the reamer is a key process in the reamer manufacturing process, which directly affects the cutting performance, service life and processingMore

Involute gear hobs An involute gear hob is a tool used to produce involute gear tooth profiles. It operates based on the principle of generating, meshing the hob with the gear being machined to create the desired involute tooth profile on the gear blank. Involute gears are widely used in mechanical transmission systems due to their smooth transmission and highMore

The concepts of machining accuracy, machining error, and surface quality In the field of mechanical manufacturing, machining accuracy is one of the core indicators for measuring part quality. It refers to the degree to which the actual geometric parameters (size, shape, and position) of a machined part conform to the ideal designed geometric parameters. The higher the machining accuracy, theMore

Piston rod processing technology As a core component of actuators such as hydraulic cylinders and pneumatic cylinders, the quality of piston rod machining directly impacts the equipment’s operating accuracy, sealing performance, and service life. Piston rods typically withstand axial and radial loads, as well as frequent reciprocating motion. Therefore, they require high dimensional accuracy, good surface finish, and sufficient strengthMore

Spline centering method Spline connections, as a high-precision mechanical connection method, are widely used in automobiles, machine tools, construction machinery and other fields. The choice of centering method directly affects the accuracy, strength and service life of the connection. Spline centering refers to the use of specific surfaces or elements in the spline fit to ensure the coaxiality of theMore

Machining of alloy steel double-throw crankshaft As a core component of internal combustion engines, compressors and other equipment, the turning quality of alloy steel double-throw crankshafts directly affects the operating accuracy and service life of the entire machine. Due to the high strength, high hardness and good wear resistance of alloy steel materials themselves, problems such as rapid tool wear,More

Principles and characteristics of rolling processing Rolling is a non-cutting plastic working method. Rolling tools (such as rollers and balls) apply pressure to the workpiece surface, causing the surface metal to plastically flow, thereby changing the surface’s microgeometry and mechanical properties. Rolling doesn’t remove material, but instead uses the plastic deformation of the metal to enhance surface quality and improveMore

Common roller outer circle shapes and applications of roller rolling tools Roller-type rolling tools apply pressure to the workpiece surface, causing plastic deformation of the workpiece’s surface metal, thereby improving surface quality and dimensional accuracy. They are widely used in industries such as machinery manufacturing, automotive, and hydraulics. The outer diameter of the roller is a key factor influencing theMore

Installation requirements for hob spindle and hob The installation accuracy of the hob spindle and hob cutter directly impacts gear machining accuracy and surface quality, making it a crucial step in gear hobbing. As the key component connecting the hob cutter to the machine tool spindle, the hob spindle’s accuracy, rigidity, and installation method significantly impact the hob’s rotational accuracy,More

Measurement of fixed chordal tooth thickness Fixed chordal tooth thickness is a crucial parameter for measuring tooth profile accuracy in gear transmissions. It refers to the chord length between two symmetrical points on the gear tooth profile. These two points are located a fixed distance (typically 0.785 times the module) from the tooth addendum. This measurement is closely related toMore

Machining of high temperature wear-resistant alloy cast iron rollers High-temperature wear-resistant alloy cast iron rollers are widely used in high-temperature, heavy-load equipment in the metallurgical, building materials, and mining industries, such as rolling mill conveyor rollers and sintering machine rollers. Their excellent high-temperature wear resistance and oxidation resistance stem from their unique composition design (containing alloying elements such as chromium,More

Processing characteristics of high-strength steel High-strength steel, defined as steel with a yield strength greater than 345 MPa, is widely used in aerospace, marine engineering, high-rise buildings, and other fields. Its excellent mechanical properties (such as high strength, high toughness, and good fatigue strength) are derived from a well-designed alloy composition (such as the addition of elements such as chromium,More

Machining of high chromium and high silicon cast iron High-chromium cast iron and high-silicon cast iron are two types of wear-resistant cast iron with unique properties. They are widely used in metallurgy, mining, chemical engineering, and other fields. High-chromium cast iron contains 12% to 30% chromium, forming a large amount of Cr7C3 carbide, which has extremely high hardness (HRC50-65) andMore

Classification of steel Steel is an iron-carbon alloy (with a carbon content of less than 2.11%) and other alloying elements. Due to its excellent mechanical properties, machinability, and cost-effectiveness, it has become the most widely used metal material in modern industry. Steel can be classified in numerous ways, including by chemical composition, quality grade, application, smelting method, and microstructure. TheseMore

Machining of composite threaded workpieces Composite threaded workpieces, combining the excellent properties of multiple materials, are widely used in high-end fields such as aerospace, automotive manufacturing, and new energy. However, turning composite materials is far more difficult than turning traditional metal materials. Composite materials are composed of a reinforcement phase (such as carbon fiber, glass fiber, and aramid fiber) andMore

Methods for preventing and reducing deformation of thin-walled workpieces Thin-walled workpieces, defined as those with a small ratio of wall thickness to diameter or length, are susceptible to deformation during machining due to their poor rigidity and strength, influenced by factors such as cutting forces, clamping forces, and cutting heat. This can lead to reduced machining accuracy and even scrap.More

Milling of face gear Face gearing refers to a toothed structure machined onto the end face of a component. It is widely used in clutches, gear couplings, cutting tools, and other parts. Its primary function is to achieve axial engagement, transmit torque, or position the part. The milling of face gearing requires guaranteed profile accuracy, tooth profile accuracy, pitch uniformity,More

Cutting angle of tool and its function A tool’s cutting angles are a core component of tool geometry, directly impacting the smoothness of the cutting process, machining quality, tool life, and production efficiency. These angles include rake angle, relief angle, lead angle, secondary angle, and rake angle. Each angle has a specific definition and function, requiring appropriate adjustment under varyingMore

Causes and prevention methods of scrap when turning conical surfaces When turning conical surfaces, due to their unique geometry, various scrap products are prone to occur during machining, such as inaccurate taper, out-of-tolerance dimensions, excessive surface roughness, and uneven generatrix lines. These scrap products not only waste materials and labor, but also affect the assembly performance and performance of theMore

Processing characteristics of hardened steel Hardened steel refers to steel that has undergone a quenching process (usually followed by tempering) to a high hardness. Its hardness is generally above HRC45, and some, such as mold steel, bearing steel, and tool steel, can even reach HRC60-70. Hardened steel offers high strength, high wear resistance, and excellent dimensional stability, making it widelyMore

Machining of pure copper small deep hole nozzle Pure copper small deep-hole nozzles are widely used in precision instruments, hydraulic systems, cooling devices, and other fields due to their excellent thermal conductivity, electrical conductivity, and plasticity. However, turning them, especially for small deep holes, presents many difficulties, such as easy tool wear, difficult chip removal, and difficulty ensuring hole straightnessMore

How to draw gears, racks, worms, worm wheels, and sprockets In mechanical drawing, there are strict specifications for the drawing of gears, racks, worms, worm wheels and sprockets. These specifications not only ensure the versatility and readability of the drawings, but also ensure the accuracy of the parts during the manufacturing and assembly process. As one of the most commonlyMore

Geometric parameters of turning tools for turning slender shafts Machining slender shafts is one of the most challenging aspects of machining. Due to their large aspect ratio (generally greater than 20) and poor rigidity, slender shafts are susceptible to bending, deformation, and vibration under the influence of cutting forces, cutting heat, and clamping forces, affecting machining accuracy and surface quality.More

Machining inner conical surface Machining an internal conical surface is a process that requires high precision in mechanical processing. Its processing quality directly affects the fitting performance and service life of the parts. The characteristic of the internal conical surface is that the aperture gradually changes from one end to the other, forming a certain taper. This structure is oftenMore

Selection of tool geometry for thin-wall turning When turning thin-walled workpieces, due to their thin walls and poor rigidity, deformation easily occurs under the effects of cutting forces, cutting heat, and clamping forces, affecting machining accuracy and surface quality. Therefore, properly selecting tool geometry is crucial to ensuring the machining quality of thin-walled workpieces. Tool geometry includes rake angle, reliefMore

Precautions for turning eccentric workpieces Machining eccentric workpieces is a common process in machining. Because the center of gravity of an eccentric workpiece deviates from the center of rotation, significant centrifugal forces are generated during machining. This not only affects machining accuracy and surface quality, but can also damage the machine tool and cutting tools, and even endanger the operator’sMore

During the metal cutting process, turning tools inevitably wear due to intense friction with the workpiece and chips, as well as high temperatures. This wear not only affects machining accuracy and surface quality, but also reduces production efficiency and increases production costs. There are various forms of turning tool wear, the most common of which are rake face wear, flankMore

Machining of T-shaped bushings As a critical component in mechanical transmission systems, the quality of T-shaped bushings directly impacts the equipment’s assembly precision and operational stability. When turning T-shaped bushings, it’s crucial to first understand the part’s structural characteristics: it typically consists of two parts, a horizontal axis and a vertical axis, forming a “T” shape at their intersection, andMore

Causes and preventive measures for deformation of thin-walled workpieces Thin-walled workpieces are prone to deformation during machining due to their structural characteristics. This not only affects the dimensional and shape accuracy of the part, but can also lead to assembly difficulties and even product rejection. Thorough analysis of the causes of thin-walled workpiece deformation and the implementation of targeted preventativeMore

Surface work hardening and its influencing factors Surface work hardening is a common phenomenon during machining. It refers to the plastic deformation of the surface metal of a workpiece under the influence of external forces such as cutting force and friction, resulting in increased hardness and strength of the surface metal, and decreased plasticity and toughness. The formation of aMore

Machining of stainless steel thin-walled sleeves Thin-walled stainless steel sleeves are widely used in the chemical, food, and medical industries due to their excellent corrosion resistance, strength, and toughness. However, due to their thin walls (typically less than 3mm thick), poor rigidity, and inherently poor thermal conductivity and severe work hardening, they are prone to deformation, difficulty maintaining dimensional accuracy,More

Machining of stainless steel sleeves Stainless steel sleeves are essential components commonly used in machinery manufacturing, widely used in bearing housings, hydraulic systems, pipe connections, and other applications. Compared to ordinary steel, stainless steel sleeves offer high strength, corrosion resistance, and toughness, but they also present challenges such as increased machining difficulty, rapid tool wear, and high cutting temperatures. WhenMore

Common grooving methods and tools Grooving is a common machining process, primarily used to create grooves on workpieces, such as undercuts, seals, and oil grooves, to meet the assembly and use requirements of parts. The quality of grooving directly impacts the fit and service life of parts, making it crucial to master common grooving methods and tool selection techniques. DuringMore

Characteristics and Application of Commonly Used Thread Machining Tools Thread turning tools are key tools for lathe thread machining, and their performance directly affects the thread’s precision, surface quality, and machining efficiency. Commonly used thread turning tools can be divided into high-speed steel thread turning tools, carbide thread turning tools, and ceramic thread turning tools, based on the tool material.More

Common cast iron grades and uses Cast iron, an alloy primarily composed of iron, carbon, and silicon, offers excellent casting, machinability, and vibration damping properties, making it widely used in machinery manufacturing, automotive, metallurgy, and other fields. Depending on the form of carbon and graphite present in the cast iron, common cast iron can be classified as gray cast iron,More

Lathe adjustment Lathe adjustment is crucial for ensuring machining accuracy and productivity, encompassing multiple aspects, including spindle speed adjustment, feed rate adjustment, tool setup adjustment, and tailstock adjustment. Proper lathe adjustment can reduce machining errors, improve part quality, and reduce tool wear and energy consumption. Lathe adjustment should be performed step-by-step according to operating procedures, based on the material, size,More