Recent developments and trends in the development of new technologies for CNC tools
First, the current situation and development trend of new products of CNC tool materials
1 Overview:
In recent years, the results of CNC tool material basic research and new products have been applied in high-speed (super high-speed), hard (including heat-resistant, difficult-to-machine), dry, fine (super-fine) CNC machining technology. New materials for tool materials are developed in superhard materials (diamond, surface modified coating materials, TiC based cermets, cubic boron nitride, Al2O3, Si3N4 based ceramics), W, Co coatings and fine particles (super Fine particle) hard alloy substrates and Go-based powder metallurgy high-speed steel and other fields have developed rapidly.
2. Superhard materials field:
Diamond (brazing polycrystalline, single crystal) tools have been rapidly applied to high-speed, high-strength, difficult-to-process colored gold (alloy) and non-ferrous metal-non-metal composite parts of high-speed, high-efficiency, dry (wet) In the mechanical cutting industry. Its profile is described as follows:
Automobile and motorcycle industry: Polycrystalline, artificial single crystal diamond face milling cutter, boring tool, turning tool, reamer, composite (combined) hole machining and other CNC tools are being widely used in high strength, high hardness Si--Al alloy Automatic parts production line;
Bamboo and wood flooring, furniture industry: polycrystalline, CVD thick film deposition diamond (composite) end mills, three-sided edge forming milling cutters, face milling cutters and other tools are widely used in high-hardness composite bamboo flooring, furniture and doors and windows... And other parts automatic production line;
Aviation, aerospace, automotive and electronic information technology industries: Diamond CVD film-coated CNC tools (mainly WCo-based carbide tools) are used in milling, turning, drilling, reaming and boring of high-strength aluminum alloys. (casting, forging), fiber-metal laminate, carbon fiber thermoplastic composite, magnesium alloy, graphite, ceramics, etc., to meet the requirements of high-speed, high-life, dry machining technology. Various manufacturers are continually improving the diamond coating process technology to improve the bonding fastness and density of the diamond film and the tool substrate;
Fine (super fine) machining technology: single crystal natural, synthetic diamond tools used in a variety of precision instrument lenses, mirrors, computer disks, copiers (recorders) drums, etc. fine (super fine, nano-scale) turning Processing
Single crystal diamond cutters are also used in industries such as fine cutting of ophthalmic corneal surgery and fine engraving of printed boards.
Various manufacturers are continuously improving the sharpening technology, sharpening precision and sharpening efficiency of various diamond tools.
â—The surface modification coating materials mainly include: TiN, TiCN, TiALN, ALTiN, Al2O3, CrN, ZrC, MoS2, WS2, etc. The above coating materials are applied by computer controlled PVD, PCVD, CVD coating technology. Counter-milling cutters, reamers, drills, composite (combination) hole machining tools, gear hobs, pinion cutters, shaving cutters, forming pull (push) knives and surface modification coatings for indexable inserts of various machine clamps Treatment (base body is high-speed steel, WCo-based hard alloy, Ti-based cermet), high-speed, high-life cutting, high-strength, high-hardness cast iron (steel), forged steel, stainless steel, titanium alloy, nickel alloy, magnesium alloy Different production requirements for materials such as aluminum alloy, powder metallurgy, bamboo wood, etc. The tool surface modification coating process technology has the characteristics of low cost and quick effect for greatly improving the cutting performance of the numerical control tool. The process technology can flexibly change the coating material according to various cutting processing technical requirements. excellent. Various manufacturers are continuously improving coating technology, improving coating materials and developing nano-scale multi-functional coating materials, aiming at continuously improving coating bonding fastness, wear resistance, impact toughness, etc., and trying to expand the application range.
â—Ti-based cermets (TiCN series) can be indexed turning tools, boring tools, reamers, milling cutters, composite (combination) hole machining CNC tools and integral vertical (ball head) milling cutters, reamer CNC tools are used in high-strength, high-hardness cast iron (steel) alloys, forged steel alloys, hardened steel alloys, heat-resistant alloys, and powder metallurgy parts to meet high-speed, high-efficiency, hard, dry (wet) Fine machining requirements. Various manufacturers are adopting different trace elements and sintering technology to develop new cermet materials, aiming to continuously improve their flexural strength, impact toughness and wear resistance. Japanese cermet tools have accounted for 30% to 40% of the total number of cemented carbide tools. In the world, the application surface of such tools is also rapidly expanding.
â—Cubic boron nitride polycrystalline composite sheet milling cutter (face milling cutter, corn tooth end mill, ball end mill), boring tool, turning tool, reamer, composite (combination) hole machining and other CNC tools (brazing) The machine clamp can be indexed into two structural forms. It is widely used in automatic production lines of high-strength and high-hardness cast iron (steel) alloys, forged steel alloys, hardened steel alloys, powder metallurgy and other parts to meet high speed, high efficiency and hardness. Fine machining technology requirements.
â—Al2O3, Si3N4 base ceramics (whiskers toughened), various machine clamps, indexable turning tools, milling cutters and other CNC tools for high strength, high hardness, wear resistant cast iron (steel), forged steel, high manganese steel , quenching steel, powder metallurgy, engineering plastics, wear-resistant composite materials and other parts production line, to meet the requirements of high-speed, high-efficiency, hard, dry machining technology. At present, various manufacturers have developed new medium- and fine-grain ceramic materials and functionally graded (multi-phase) ceramic materials by adding different trace elements and innovative production techniques to Al2O3 and Si3N4 base ceramic materials, aiming to continuously improve their flexural strength. , impact resistance and toughness.
3, W, Co-based coating and fine particles (ultrafine particles) cemented carbide materials lead city:
W, Co type fine (medium) granular cemented carbide base material is added to various coating elements to meet various coating technology requirements of surface modification coating materials, and is suitable for cutting of indexable inserts by various machining process technologies. Development of the requirements of performance; ultra-fine particle cemented carbide matrix material development and application in two aspects: in the electronics, information technology industry for processing fiber-metal composite laminate material workpiece micro drill, end mill, its substrate The material develops toward high toughness, and the surface is coated with diamond film to increase the hardness and wear resistance of the tool surface; in the mold industry, aircraft, steam turbine, automobile, etc., for cutting high-strength, high-hardness cast iron (steel), Forged steel, aluminum alloy (casting, forging), powder metallurgy material workpiece integral vertical (ball head) milling cutter, special extrusion tool, reamer (Φ30mm < diameter > Φ4mm), drill bit, composite (combination) hole machining tool ...and CNC tools, the base material is developing in the direction of high hardness and high toughness. Generally not coated, used repeatedly for repeated grinding.
4. Leading city containing Co-based powder metallurgy high-speed steel materials:
Powdered metallurgy high-speed steel (including Co-based) materials with improved powdering, hot pressing process and trace element innovation, and various forming broaches (integral, combined), high-speed hob, shaving (inserted) cutter , taps, corrugated edge end mills, forming end mills and rolling (squeezing, rolling) pressing tools, used in a large number of manufacturing industries such as cars, motorcycles, aero engines, steam turbines, etc., processing high-strength, high-hardness cast iron (steel Alloy, alloy structural steel (forged), heat-resistant alloy steel, stainless steel, integral aluminum alloy (hot forging), high Si--Al alloy material workpiece. According to different requirements of cutting technology, the surface is coated with coating materials such as TiN, TiCN, TiALN, CrN, MoS2, ZrC, etc. to meet the requirements of high-speed, high-efficiency and hard precision machining technology.
CNC tool materials are the more active materials technology leader, and the introduction of each new product will make the machining technology leap to a new level. Manufacturers have always attached great importance to the research and development technology of the city.
Second, the recent development and trend of new technology and new varieties of CNC tools
1 Overview:
In recent years, the scientific and technological achievements of CNC tools are mainly reflected in the development of more than one cutting function and improved cutting edge cutting performance, adapting to high speed (super high speed), hard (including heat, difficult to process), dry, fine (super fine) Cutting and high efficiency CNC machining cutting technology requirements. With the advancement of part blank manufacturing technology, the geometrical dimensions and cutting allowance of the part blank are more precise. The development of new structure and new varieties of CNC tools is mainly concentrated in the light and medium load cutting range, and the special hole machining, broaching and rolling The five types of tools, such as pressing, rolling and pressing, milling and turning, are more active, and they are equipped with corresponding blade chipbreakers.
2. CNC tool system:
In recent years, the development trend of other types of tool systems developed by various manufacturers has been gradually replaced by the "HSK" tool system. Developed countries in Europe follow the German HSK tool system standard DIN69893-1, and the International Standardization Organizing Committee has established ISO/DIS standards for it. The HSK tool system has the characteristics of high dynamic and static stiffness, good positioning (twisting) accuracy, and high allowable speed (≤150000p.rm). It not only facilitates the management of tools, but also saves tool costs and reduces production costs. It is first applied to machining centers, CNC boring and milling machines, and gradually expanded to various types of lathes (turning centers), grinding machines (grinding centers), CNC special machines and CNC machining automatic lines, covering almost all tool fields.
3, hole processing tools:
In the tool category, the hole machining tool is a big family, and its small reforms are endless. Here, the main new structures and new varieties are briefly described as follows:
â—CNC drill:
Integral drill bit: The cutting edge of the drill tip is improved from symmetrical linear type to symmetrical circular arc type (r=1/2D) to increase the cutting edge and improve the life of the drill tip. The drill core is thickened to increase the rigidity of the drill body. "The type of chisel edge (or spiral center blade) replaces the traditional chisel edge, reduces axial drilling resistance and improves the life of the chisel edge; uses different tip angle stepped tips and negative reciprocating edges to improve chipping, chip breaking and drilling performance. And hole processing precision; inlaid modular hard (super hard) material crown; oil hole cooling and large spiral angle (≤ 40 °) structure. Recently, a monolithic fine-grain ceramic (Si3N4), Ti-based cermet material drill has been developed.
Machine-clamping drill bit: The drill tip adopts a special symmetrical cutting edge with a rectangular shape and a radially self-balancing indexable insert with a drilling force to replace other geometric shapes and a drilling force. Small drilling vibration improves the self-centering performance, life and hole machining accuracy of the drill tip.
â—Composite (combined) hole machining CNC tool:
The new structure and new technology of the drill bit, the reamer, the expansion boring tool and the extrusion tool are combined. The development of the integrated tool for the integral type, the machine clamp type and the special composite (combination) hole processing is very fast. In general: the use of inlaid modular hard (ultra-hard) material cutting edge (including crown) and oil hole cooling, large spiral groove and other structures is its current development trend.
â—CNC reamer:
The large spiral angle (≤45°) cutting edge, bladeless extrusion reaming and oil hole cooling are the overall development direction, and the maximum reaming aperture has reached φ≤400mm.
â—Sickle:
The single-edged fine-tuning precision boring tool is being replaced by a multi-blade expansion (锪) hole cutter, reamer and composite (combination) hole machining special CNC tool. In foreign countries, the use of the tool system internal push-pull rod axial movement or high-speed centrifugal force to balance the slider movement, one-time pass to complete the boring spherical surface (curved surface), inclined surface and reverse machining of the back part of the CNC precision precision boring tool, representative The development direction of the sickle.
â— Tap:
A large spiral angle (≤45°) tap has been developed, and the cutting cone has a soft and hard condition depending on the material of the machined part, and a special blade inclination angle and front angle are designed.
â—Expansion (锪) hole cutter:
Multi-blade, configuration of various CNC tool handles and modular adjustable micro-tool holders is the development direction of the current expansion (锪) hole cutter.
4, CNC milling cutters:
Integral end mill: The edge of the carbide end mill adopts a large helix angle (≤62°) structure. The over center end edge of the end mill end is often curved (or spiral center edge) and negative. Inclination, increasing the length of the cutting edge, improving the smoothness of the cutting, the accuracy of the workpiece table and the tool life. Adapt to the requirements of CNC high-speed, stable three-dimensional space milling technology.
Machine-clamp end mills: side teeth, end teeth and over center edge end teeth of a combination of indexable inserts (often with three-dimensional chipbreaker) Cutting edge), can meet the technical requirements of CNC high-speed, stable three-dimensional space milling.
CNC milling cutters have been fabricated by computer-aided design, cutting simulation and CNC machining technology.
Machine-clamped CNC face milling cutter: the cutter body tends to be made of lightweight high-strength aluminum and magnesium alloy. The cutting edge adopts large rake angle and negative edge inclination. The indexable inserts (various geometric shapes) have three-dimensional chipbreaker. shape.
CNC milling cutters and special composite hole machining tools are applied with high-speed rotary body dynamic balance and safety clamping technology. Some high-speed rotary cutters also use aerodynamic principles, using cyclone cold cutting edges, during dry machining. Reduce the temperature of the cutting edge and increase tool life.
5, turning tools,
The grooving and cutting type turning tools have developed a multi-tool turning tool for collecting end face, outer garden, profiling, grooving, cutting and chamfering. The blade clamping method adopts the embedded elastic cutter body and the cutting force is fixed. The structure is very applicable and novel.
6, broaching tools:
With the support of modern CNC machining technology, we have developed a variety of special outer contour precision forming, combined broach and car-pull combination forming broaching tools, with special CNC machine tools. The batch production efficiency of some parts of the automobile is increased by several tens of times, and the product quality and precision are very stable.
7, other tools:
The production process of small modulus involute external gears and spline shaft parts for automobiles and motorcycles adopts rolling and squeezing chipless processing technology, and develops special tools and special CNC machine tools to batch-produce special workpieces. The efficiency is increased by several times, and the quality and precision are very stable.
Third, the conclusion
The innovative results of broaching, rolling, squeezing tools and composite (combined) hole machining CNC tools often lead to great changes in the concept of machining, and then integrate the innovative materials of tool materials and special CNC machine tools, resulting in a society Benefits and economic benefits are also huge.
1 Overview:
In recent years, the results of CNC tool material basic research and new products have been applied in high-speed (super high-speed), hard (including heat-resistant, difficult-to-machine), dry, fine (super-fine) CNC machining technology. New materials for tool materials are developed in superhard materials (diamond, surface modified coating materials, TiC based cermets, cubic boron nitride, Al2O3, Si3N4 based ceramics), W, Co coatings and fine particles (super Fine particle) hard alloy substrates and Go-based powder metallurgy high-speed steel and other fields have developed rapidly.
2. Superhard materials field:
Diamond (brazing polycrystalline, single crystal) tools have been rapidly applied to high-speed, high-strength, difficult-to-process colored gold (alloy) and non-ferrous metal-non-metal composite parts of high-speed, high-efficiency, dry (wet) In the mechanical cutting industry. Its profile is described as follows:
Automobile and motorcycle industry: Polycrystalline, artificial single crystal diamond face milling cutter, boring tool, turning tool, reamer, composite (combined) hole machining and other CNC tools are being widely used in high strength, high hardness Si--Al alloy Automatic parts production line;
Bamboo and wood flooring, furniture industry: polycrystalline, CVD thick film deposition diamond (composite) end mills, three-sided edge forming milling cutters, face milling cutters and other tools are widely used in high-hardness composite bamboo flooring, furniture and doors and windows... And other parts automatic production line;
Aviation, aerospace, automotive and electronic information technology industries: Diamond CVD film-coated CNC tools (mainly WCo-based carbide tools) are used in milling, turning, drilling, reaming and boring of high-strength aluminum alloys. (casting, forging), fiber-metal laminate, carbon fiber thermoplastic composite, magnesium alloy, graphite, ceramics, etc., to meet the requirements of high-speed, high-life, dry machining technology. Various manufacturers are continually improving the diamond coating process technology to improve the bonding fastness and density of the diamond film and the tool substrate;
Fine (super fine) machining technology: single crystal natural, synthetic diamond tools used in a variety of precision instrument lenses, mirrors, computer disks, copiers (recorders) drums, etc. fine (super fine, nano-scale) turning Processing
Single crystal diamond cutters are also used in industries such as fine cutting of ophthalmic corneal surgery and fine engraving of printed boards.
Various manufacturers are continuously improving the sharpening technology, sharpening precision and sharpening efficiency of various diamond tools.
â—The surface modification coating materials mainly include: TiN, TiCN, TiALN, ALTiN, Al2O3, CrN, ZrC, MoS2, WS2, etc. The above coating materials are applied by computer controlled PVD, PCVD, CVD coating technology. Counter-milling cutters, reamers, drills, composite (combination) hole machining tools, gear hobs, pinion cutters, shaving cutters, forming pull (push) knives and surface modification coatings for indexable inserts of various machine clamps Treatment (base body is high-speed steel, WCo-based hard alloy, Ti-based cermet), high-speed, high-life cutting, high-strength, high-hardness cast iron (steel), forged steel, stainless steel, titanium alloy, nickel alloy, magnesium alloy Different production requirements for materials such as aluminum alloy, powder metallurgy, bamboo wood, etc. The tool surface modification coating process technology has the characteristics of low cost and quick effect for greatly improving the cutting performance of the numerical control tool. The process technology can flexibly change the coating material according to various cutting processing technical requirements. excellent. Various manufacturers are continuously improving coating technology, improving coating materials and developing nano-scale multi-functional coating materials, aiming at continuously improving coating bonding fastness, wear resistance, impact toughness, etc., and trying to expand the application range.
â—Ti-based cermets (TiCN series) can be indexed turning tools, boring tools, reamers, milling cutters, composite (combination) hole machining CNC tools and integral vertical (ball head) milling cutters, reamer CNC tools are used in high-strength, high-hardness cast iron (steel) alloys, forged steel alloys, hardened steel alloys, heat-resistant alloys, and powder metallurgy parts to meet high-speed, high-efficiency, hard, dry (wet) Fine machining requirements. Various manufacturers are adopting different trace elements and sintering technology to develop new cermet materials, aiming to continuously improve their flexural strength, impact toughness and wear resistance. Japanese cermet tools have accounted for 30% to 40% of the total number of cemented carbide tools. In the world, the application surface of such tools is also rapidly expanding.
â—Cubic boron nitride polycrystalline composite sheet milling cutter (face milling cutter, corn tooth end mill, ball end mill), boring tool, turning tool, reamer, composite (combination) hole machining and other CNC tools (brazing) The machine clamp can be indexed into two structural forms. It is widely used in automatic production lines of high-strength and high-hardness cast iron (steel) alloys, forged steel alloys, hardened steel alloys, powder metallurgy and other parts to meet high speed, high efficiency and hardness. Fine machining technology requirements.
â—Al2O3, Si3N4 base ceramics (whiskers toughened), various machine clamps, indexable turning tools, milling cutters and other CNC tools for high strength, high hardness, wear resistant cast iron (steel), forged steel, high manganese steel , quenching steel, powder metallurgy, engineering plastics, wear-resistant composite materials and other parts production line, to meet the requirements of high-speed, high-efficiency, hard, dry machining technology. At present, various manufacturers have developed new medium- and fine-grain ceramic materials and functionally graded (multi-phase) ceramic materials by adding different trace elements and innovative production techniques to Al2O3 and Si3N4 base ceramic materials, aiming to continuously improve their flexural strength. , impact resistance and toughness.
3, W, Co-based coating and fine particles (ultrafine particles) cemented carbide materials lead city:
W, Co type fine (medium) granular cemented carbide base material is added to various coating elements to meet various coating technology requirements of surface modification coating materials, and is suitable for cutting of indexable inserts by various machining process technologies. Development of the requirements of performance; ultra-fine particle cemented carbide matrix material development and application in two aspects: in the electronics, information technology industry for processing fiber-metal composite laminate material workpiece micro drill, end mill, its substrate The material develops toward high toughness, and the surface is coated with diamond film to increase the hardness and wear resistance of the tool surface; in the mold industry, aircraft, steam turbine, automobile, etc., for cutting high-strength, high-hardness cast iron (steel), Forged steel, aluminum alloy (casting, forging), powder metallurgy material workpiece integral vertical (ball head) milling cutter, special extrusion tool, reamer (Φ30mm < diameter > Φ4mm), drill bit, composite (combination) hole machining tool ...and CNC tools, the base material is developing in the direction of high hardness and high toughness. Generally not coated, used repeatedly for repeated grinding.
4. Leading city containing Co-based powder metallurgy high-speed steel materials:
Powdered metallurgy high-speed steel (including Co-based) materials with improved powdering, hot pressing process and trace element innovation, and various forming broaches (integral, combined), high-speed hob, shaving (inserted) cutter , taps, corrugated edge end mills, forming end mills and rolling (squeezing, rolling) pressing tools, used in a large number of manufacturing industries such as cars, motorcycles, aero engines, steam turbines, etc., processing high-strength, high-hardness cast iron (steel Alloy, alloy structural steel (forged), heat-resistant alloy steel, stainless steel, integral aluminum alloy (hot forging), high Si--Al alloy material workpiece. According to different requirements of cutting technology, the surface is coated with coating materials such as TiN, TiCN, TiALN, CrN, MoS2, ZrC, etc. to meet the requirements of high-speed, high-efficiency and hard precision machining technology.
CNC tool materials are the more active materials technology leader, and the introduction of each new product will make the machining technology leap to a new level. Manufacturers have always attached great importance to the research and development technology of the city.
Second, the recent development and trend of new technology and new varieties of CNC tools
1 Overview:
In recent years, the scientific and technological achievements of CNC tools are mainly reflected in the development of more than one cutting function and improved cutting edge cutting performance, adapting to high speed (super high speed), hard (including heat, difficult to process), dry, fine (super fine) Cutting and high efficiency CNC machining cutting technology requirements. With the advancement of part blank manufacturing technology, the geometrical dimensions and cutting allowance of the part blank are more precise. The development of new structure and new varieties of CNC tools is mainly concentrated in the light and medium load cutting range, and the special hole machining, broaching and rolling The five types of tools, such as pressing, rolling and pressing, milling and turning, are more active, and they are equipped with corresponding blade chipbreakers.
2. CNC tool system:
In recent years, the development trend of other types of tool systems developed by various manufacturers has been gradually replaced by the "HSK" tool system. Developed countries in Europe follow the German HSK tool system standard DIN69893-1, and the International Standardization Organizing Committee has established ISO/DIS standards for it. The HSK tool system has the characteristics of high dynamic and static stiffness, good positioning (twisting) accuracy, and high allowable speed (≤150000p.rm). It not only facilitates the management of tools, but also saves tool costs and reduces production costs. It is first applied to machining centers, CNC boring and milling machines, and gradually expanded to various types of lathes (turning centers), grinding machines (grinding centers), CNC special machines and CNC machining automatic lines, covering almost all tool fields.
3, hole processing tools:
In the tool category, the hole machining tool is a big family, and its small reforms are endless. Here, the main new structures and new varieties are briefly described as follows:
â—CNC drill:
Integral drill bit: The cutting edge of the drill tip is improved from symmetrical linear type to symmetrical circular arc type (r=1/2D) to increase the cutting edge and improve the life of the drill tip. The drill core is thickened to increase the rigidity of the drill body. "The type of chisel edge (or spiral center blade) replaces the traditional chisel edge, reduces axial drilling resistance and improves the life of the chisel edge; uses different tip angle stepped tips and negative reciprocating edges to improve chipping, chip breaking and drilling performance. And hole processing precision; inlaid modular hard (super hard) material crown; oil hole cooling and large spiral angle (≤ 40 °) structure. Recently, a monolithic fine-grain ceramic (Si3N4), Ti-based cermet material drill has been developed.
Machine-clamping drill bit: The drill tip adopts a special symmetrical cutting edge with a rectangular shape and a radially self-balancing indexable insert with a drilling force to replace other geometric shapes and a drilling force. Small drilling vibration improves the self-centering performance, life and hole machining accuracy of the drill tip.
â—Composite (combined) hole machining CNC tool:
The new structure and new technology of the drill bit, the reamer, the expansion boring tool and the extrusion tool are combined. The development of the integrated tool for the integral type, the machine clamp type and the special composite (combination) hole processing is very fast. In general: the use of inlaid modular hard (ultra-hard) material cutting edge (including crown) and oil hole cooling, large spiral groove and other structures is its current development trend.
â—CNC reamer:
The large spiral angle (≤45°) cutting edge, bladeless extrusion reaming and oil hole cooling are the overall development direction, and the maximum reaming aperture has reached φ≤400mm.
â—Sickle:
The single-edged fine-tuning precision boring tool is being replaced by a multi-blade expansion (锪) hole cutter, reamer and composite (combination) hole machining special CNC tool. In foreign countries, the use of the tool system internal push-pull rod axial movement or high-speed centrifugal force to balance the slider movement, one-time pass to complete the boring spherical surface (curved surface), inclined surface and reverse machining of the back part of the CNC precision precision boring tool, representative The development direction of the sickle.
â— Tap:
A large spiral angle (≤45°) tap has been developed, and the cutting cone has a soft and hard condition depending on the material of the machined part, and a special blade inclination angle and front angle are designed.
â—Expansion (锪) hole cutter:
Multi-blade, configuration of various CNC tool handles and modular adjustable micro-tool holders is the development direction of the current expansion (锪) hole cutter.
4, CNC milling cutters:
Integral end mill: The edge of the carbide end mill adopts a large helix angle (≤62°) structure. The over center end edge of the end mill end is often curved (or spiral center edge) and negative. Inclination, increasing the length of the cutting edge, improving the smoothness of the cutting, the accuracy of the workpiece table and the tool life. Adapt to the requirements of CNC high-speed, stable three-dimensional space milling technology.
Machine-clamp end mills: side teeth, end teeth and over center edge end teeth of a combination of indexable inserts (often with three-dimensional chipbreaker) Cutting edge), can meet the technical requirements of CNC high-speed, stable three-dimensional space milling.
CNC milling cutters have been fabricated by computer-aided design, cutting simulation and CNC machining technology.
Machine-clamped CNC face milling cutter: the cutter body tends to be made of lightweight high-strength aluminum and magnesium alloy. The cutting edge adopts large rake angle and negative edge inclination. The indexable inserts (various geometric shapes) have three-dimensional chipbreaker. shape.
CNC milling cutters and special composite hole machining tools are applied with high-speed rotary body dynamic balance and safety clamping technology. Some high-speed rotary cutters also use aerodynamic principles, using cyclone cold cutting edges, during dry machining. Reduce the temperature of the cutting edge and increase tool life.
5, turning tools,
The grooving and cutting type turning tools have developed a multi-tool turning tool for collecting end face, outer garden, profiling, grooving, cutting and chamfering. The blade clamping method adopts the embedded elastic cutter body and the cutting force is fixed. The structure is very applicable and novel.
6, broaching tools:
With the support of modern CNC machining technology, we have developed a variety of special outer contour precision forming, combined broach and car-pull combination forming broaching tools, with special CNC machine tools. The batch production efficiency of some parts of the automobile is increased by several tens of times, and the product quality and precision are very stable.
7, other tools:
The production process of small modulus involute external gears and spline shaft parts for automobiles and motorcycles adopts rolling and squeezing chipless processing technology, and develops special tools and special CNC machine tools to batch-produce special workpieces. The efficiency is increased by several times, and the quality and precision are very stable.
Third, the conclusion
The innovative results of broaching, rolling, squeezing tools and composite (combined) hole machining CNC tools often lead to great changes in the concept of machining, and then integrate the innovative materials of tool materials and special CNC machine tools, resulting in a society Benefits and economic benefits are also huge.
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