Jméno společnosti:BEIJING DEMINA PRECISION MACHINERY CO., LTD Tel 0086-10-62965622 0086-13910819265 E-mailem:[email protected] Adresa: No.1034, Building A, Hongfu Science Park, Beiqijia Town, Changping District, 102209, Beijing, China
Cubic boron nitride abbreviation: CBN tool’s hardness ranks after diamond. The substance, which has not been found in nature, is a synthetic super-hard material.CBN usually works best when the hardness of the material is higher than 48HRC (CBN wears out quickly when processing soft materials). Although it is more brittle than cemented carbide and has lower thermal conductivity and chemical stability than ceramic tools, it has higher impact strength and fracture resistance than ceramic tools and can also cut hard metals for less rigid machine tools.
Performance characteristics of CBN tool
Suitable custom CBN tool can withstand the cutting load of high power rough machining, intermittent cutting hit and fine machining required to heat and wear properties. Fine turning hardening workpiece is a new technology, the implementation of the process test, can be used and workpiece’s materials, hardness, and size of the same bar material, on the same kind of machines for finishing or rough machining test, the key is to test the choice of cutting tools and cutting parameters and whether the processing system has enough rigidity. At present domestic has adopted the process, the process parameters for nuc = 150 m/min, the f/r = 0.1 mm, alpha p = 0.2 ~ 0.3 mm, realized the turning instead of grinding.
CNC tool grinding machine is used to process end mills, ball end mills, step drills, reamers, PCD tool grinding machines, CBN inserts, etc. It can sharpen the cutting edges and grooves of metal cutting tools and the outer circles, planes and complex shapes of generally small and medium parts. The diameter of the larger grinding workpiece is 250 mm. So what safety regulations should we pay attention to when using CNC tool grinding machines? The following Beijing Demina uses the BT-150N CNC tool grinding machine as an example to introduce some safety regulations of CNC tool grinding machines.Safe Operation And Procedures Of CNC Tool Grinding Machine1. Lubricate all parts of the machine tool before starting the tool grinder, check whether the mechanical transmission is normal and whether the switch button is reliable to ensure that the grinding wheel is intact without damage.2. Pay attention when installing the grinding wheel.(1）Check whether the shape of the grinding wheel is complete before installation. Tap the grinding wheel to hear a crisp sound to ensure that the grinding wheel is intact and not damaged.(2）Place the asbestos pad on the grinding wheel, balance it for the first time after clamping and balance again after the machine is trimmed. The new grinding wheel needs to idle for five minutes.3. The Overspeed running of the grinding wheel is prohibited and must not exceed the warning speed.4. PCD tool grinder machine reasonably selects the grinding amount, and overload grinding is strictly prohibited.5. Check whether the workpiece is sucked or clamped firmly before grinding. When clamping high workpieces and workpieces with a small bottom area, use stoppers or special clamps to prevent failure.6. It is forbidden to stand in front of the grinding wheel when it is turned on to prevent the grinding wheel from flying out or the workpiece flying.7. After the work is finished, the machine tool is cleaned, the power is cut off. The parts are neatly arranged, and the workplace is kept clean.Beijing Demina specializes in the production of various types of CNC tool grinders. Now BT-150N universal tool grinder for sale, users are welcome to come to buy.
When the PCD tool is used for ultra-precision cutting, the surface roughness of tool has a great influence on the workpiece roughness. The surface roughness of the general tool is higher than 1 to 2 grades of cutting the workpiece surface. And the influence of the surface roughness of the PCD tool is larger than that of the front surface. This is a breakthrough from the traditional point of view: the surface roughness of cutting tool must be lower than the surface roughness of 1 to 2 grades to be cut from the workpiece. To grind workpiece of surface roughness Ra0.01μｍ, the blade roughness itself must not be greater than Ra0. 01μｍ. The roughness of the front and rear cutter surface should not be higher than Ra0. 063μｍ.
Effect of PCD tool surface roughness on ultra-precision machining
It is concluded that the surface roughness of the PCD tool can be increased by 2 to 4 grades compared with the traditional view. Which can prolong its service life , save the high cost of repairing and grinding and make its use more widely.This will bring great social and economic benefits.
Because the diamond grinding wheel is relatively expensive, in order to make full use of the efficiency of the grinding wheel and prevent groove marks. According to the size of the PCD cutter, the amplitude of its swing should be paid attention to. By adjusting the swing amplitude and frequency of the swing frame of the grinding wheel of the cutting tool. The coincidence degree between the grinding wheel and the cutter should be greater than or equal to 1.Beijing Demina’s BT-150H tool grinder is a manual type. The grinding wheel oscillation is controlled by the PLC program and move very smoothly. The swing range is between 0 to 30 mm (The max. swing range can be added to 150 mm according to the customer’s requirement.). The grinding wheel is with uniform consumption and timely self-sharpening, to ensure the grinding precision and roughness. So when the machine tool is grinding the PCD tools, the PCD tools can be stable and fine.BT-150H is new grinding equipment professionally developed and designed by Beijing Demina. This equipment is designed for economical manufacturing and grinding of cutting tools in some industries. Such as CVD, PCD, PCBN, cemented carbide, tungsten And other cutting tools. It can grind angle and radius on standard and special turning and milling inserts, boring tools, grooving tools, and many types of special turning tools. Welcome to scan our website for more information.
Beijing Demina Precision Machinery CO., LTD is a professional manufacturer of shaft CNC tool grinding machines. Our models are traditional and 4-axis CNC tool grinding machines and related grinding peripherals. Including wheel dresser and step grinding machine. The BT-150D 4-axis CNC tool grinder is a pre-process equipment for the continuous centerless grinding machine before the tool grinding. It meets the rising demand for 3C industrial knife, aerospace polishing tool, step drill tool and forming punch in recent years. Demina has developed the 4-axis CNC tool grinder with dual-spindle double-grinding wheel structure and designed the two grinding wheels in a one-to-one synchronous grinding mechanism. The workpiece is assisted by a V-shaped support block and a rotating wheel. The grinding method, combined with the DXF import function of the self-developed TP Smart software. Can replace the grinding of the multi-section arc that cannot achieve by the cylindrical grinding machine. Controlled by the intelligent system of the whole machine. The dimensional accuracy of the continuous production of the workpiece can control at 0.003mm, the concentricity is 0.002mm. And the surface roughness Ra can reach 0.05um.
Innovation OF Demina 4-axis CNC tool grinder
The Demina four-axis CNC tool grinding machine is mainly used for the pre-tooling process and the grinding of the forming punch. This equipment is the intermediate equipment before the grinding of the tool after the centerless grinding. The main structure of the four-axis CNC cylindrical grinding machine is equipped with a three-axis robot automatic loading and unloading system to achieve automatic production of the whole machine.
In the grinding spindle part, the double-spindle double grinding wheel is designed to place on the X and U axes. The two grinding wheels are taken in one synchronous mode, the workpiece is moved to design two parallel shafts. And the new material is grounded using the Z-axis. In this way, the regrind portion of the old material is moved by the W axis. During the grinding process, through the assistance of the V-shaped support block and the rotating wheel and the temperature control system of the whole machine. The dimensional accuracy of the continuous production of the workpiece can control at 0.003mm and the concentricity is 0.002mm. The rod material has a total grinding length of 330 mm, a diameter ranging from 0.025 to 16 mm. And a length to diameter ratio of up to 350 times.
The practicality of Demina 4-axis CNC tool grinding machine
01. Four-axis CNC tool grinding machine TP-4 is based on Taiwan Advantech IPC. It adopts touch screen operation and is equipped with a self-developed HMI interface. TP Smart step software, Smart Machine Client and Smart Machine Server system to make TP-4. The four-axis CNC cylindrical grinding machine reaches the production line equipment of Industry 4.0 with intelligent machine networking.
02. with automatic correction function. Respectively correct the position of the tray of the finished claw and the material claw in the tray area and the folder clamping position of the working area.
03. In mass production, the pre-probe positioning function is used to record the clamping length of each workpiece before grinding. After grinding, the workpiece diameter end measuring system is used. And each workpiece size is recorded as the grinding finished product data management. It can regrind on the machine when the dimensional tolerance is set.
04. The SMC and SMS systems are mainly used for cross-system connection of heterogeneous communication in the tool machine production line. The software program is installed on the IPC and connected to the network. The machine can display the machine utilization rate and integrate the factory equipment on the server-side. Real-time monitoring of the plant area, mobile APP monitoring.
Structure and quality OF Four-axis CNC tool grinding machine
01. The main structural parts of the equipment have been analyzed by CAE. And the appropriate rib distribution is used to optimize the rigidity/weight of the structure. The four axes are pre-compressed precision rail and precision ball screw mechanism, servo motor drove it.
02. Using laser interferometer to compensate for the positioning accuracy of each axis item. Repeating positioning accuracy R≦0.002mm according to ISO230-2 and GB/T 17421.2-2000 standard, positioning accuracy A≦0.004mm
03. Stable quality, in line with ISO 9001. Europe is the main market that meets its CE safety standards.
Market OF Four-axis CNC tool grinding machine
01. At present, Demina four-axis CNC tool grinding machines are exported to countries such as the United States, Mexico, Turkey, and Japan. Currently, they are sold by Demina and sold with local agents. In 2019, it successfully developed South Korea, Malaysia, Thailand, India, Singapore, Southeast Asia, and other countries.
02. Demina four-axis CNC tool grinding machine automation was successfully developed at the end of 2016. In 2017, through the exposure of TIMTOS, 5 units were successfully sold in Beijing to the index tool manufacturer, and in 2018 at the machine tool exhibition in Germany, Russia, and China. , the United States, Germany, Turkey, Japan, Taichung, Thailand, the exhibition entered the export market. And successfully sold to Japan's Mitsubishi Materials Co., Ltd., Poland, Thailand, Turkey, China, and other regions, the successful development of four-axis CNC tool grinding machine. The company is taking a big step forward in precision tool grinding technology.
Economy OF Four-axis CNC tool grinding machine
BT-150D 4-axis CNC tool grinder implements the technology localization policy. And produces its own intelligent CNC precision tool grinding machine that can compete with similar foreign models. Effectively achieving more than 50% of imported imports. The self-developed design and production of the four-axis CNC tool grinding machine have low cost and strong market competitiveness. In addition to Demina, the cylindrical grinding machine for the simultaneous grinding of external cylindrical workpieces in Taiwan has not been successfully developed by the manufacturer. It is an important key indicator technology for the Beijing tool machine industry. It has the autonomy and internationalization of Taiwan's industry. Great significance.
Aesthetics OF Four-axis CNC tool grinding machine
Demina BT-150D 4-axis CNC tool grinder is a complete machine automation device, the operation is divided into two areas. One is the front working area of the machine, and the other is the side loading and unloading system operation area. The four-axis structure of the machine and the operation of the three-axis loading and unloading system are integrated on the HMI operation interface, so the operation box design takes into account the convenience of the user. Designed to rotate 240 degrees. The Demina four-axis CNC tool grinder has the appearance of the above-mentioned arc-shaped appearance and allows the three-layer door and the sheet metal to have a layered sense and a multi-view way to think. When the operator is operating the machine, it is necessary to check the machine grinding time. The operation is based on the design of the window, each on the front and the side, allowing the operator to view it conveniently while using it, and to easily and conveniently maintain the machine.
Demina's four-axis CNC tool grinder window is deliberately designed on the same horizontal line, which reduces the operator's visual error. The front three-layer door opening type allows the user to erect the workpiece without any obstacles and has a large space for comfortable activities. Which makes the operator more convenient to operate. Based on the center blue of DeminaLOGO in the color scheme, the machine is designed as a fine gift appearance, from the base to the outer sheet metal 1/3 height. With the right front corner post extending to the top of the machine table, so that the overall texture is improved, also making the machine The recognition of the station is even higher.
BT-150M tool grinder has high precision, good rigidity, and is economical and practical. It is especially suitable for sharpening various small and medium tools. Such as grinding PCD, PCBN, CVD, tungsten, hard alloy and other materials. With the corresponding attachments, various turning tools such as milling inserts, boring tools, grooving tools can be ground.This equipment uses diamond wheels to sharpen all kinds of carbide tools. To grind all types of tools, the machine is equipped with a range of attachments. BT-150M tool grinder is mainly composed of a bed, cross slide, lifting sleeve, grinding head and various accessories. According to different grinding requirements, the equipment has four types of movements: spindle rotation, longitudinal movement, lateral movement, and vertical lifting movement. The longitudinal movement uses rolling steel guides. The lifting sleeve is driven by a rolling screw. The lateral movement is a sliding guide. The grinding head spindle can achieve four speeds for grinding different tools.Performance Characteristics Of BT-150M Tool Grinder1. The working table adopts imported high-precision linear rolling guide, the bed is stable, and the operation is lightweight.2. The tool grinder can be matched with various accessories according to the tool to be ground. It can grind various end mills, end mills, R-type cutters, cylindrical cutters, three-sided edge cutters, single-angle cutters, reamers, Angles and radii of turning tools, R-type turning tools, hobbing tools, drills, taps, high-power cutting tools and other types of tools.3. Semi-auto tool sharpening machine the motor can rotate 360 degrees, equipped with grinding wheels on both sides to increase the control of tool grinding. When grinding tools of different materials, as long as the wheel head is rotated, grinding can be started again, without changing the grinding wheel. Increase safety and reduce wheel exchange and repair time.4. This equipment uses high-strength and toughness FC30 cast iron to maintain mechanical accuracy for a long time.Beijing Demina is a professional BT-150M tool grinder manufacturer. We produce all kinds of tool grinder equipment, and the equipment not only has good performance but also the price is relatively affordable. Interested users are welcome to come to buy.
BT-150M tool grinder and BT-150N tool grinder are both precision grinder instruments and equipment often used today. Both of them help users improve the grinding efficiency of the tool to a certain extent. Moreover, the performance and shape of the two tool grinders are not much different. But there are some differences between careful analysis. Beijing Demina Precision Machinery CO., LTD will introduce the differences between the two.
The Difference Between BT-150M And BT-150N Tool Grinding Machine
Below are the differences between BT150M and BT150N tool grinding machine:
The BT-150M tool grinder is two CNC axes (X-axis and b-axis). The is three CNC axes (X, Y, and B axes) plus a motor controlled wheel Angle adjustment axis (C axis).
The controller of the former is a programmable controller (PLC). Which is not suitable for the multi-axis movement and has poor anti-interference ability between axes. The controller of the latter is a motion controller. Which is suitable for multi-axis coordinated motion with strong anti-interference ability and high motion precision.
The application software of the former is simple. The latter has powerful applications, such as the flexibility to set multiple (up to 15) swing positions.
Both can be easily switched to ordinary manual operation.
Beijing Demina Precision Machinery CO., LTD is a professional manufacturer of BT-150M tool grinder and BT-150N tool grinder. The equipment we produce has good performance and higher grinding efficiency. We are a manufacturer, so the equipment we produce is sold directly at the ex-factory price, not only for domestic sales but also exported to Japan, Korea, India, and other countries. Users in need are welcome to come to buy.
PCD material has very high hardness and excellent wear resistance, making it an ideal tool material. But PCD tool grinding processing difficulty is very large, the efficiency is low. The grinding wheel of the PCD tool refers to a grinding PCD tool with a diamond wheel on special PCD tool grinding machine.Usually, in the process of cutting tool production, the cost of cutting is high, to minimize the amount of removal is the goal of the pursuit. The minimum machining allowance depends on the damage depth of PCD caused by the cutting method and heating process. It consists of three parts: one is the cutting way to the surface damage depth. Secondly, the damage depth of the internal tissue caused by the cutting method. The third is the influence of heating mode.Demina’s BT-150N 3-axis CNC PCD & PCBN tool grinding machine is developed by our company’s technical team by introducing advanced foreign production technology. The device is made of three shafts, and each shaft part plays an important role when the device is performing grinding work. In addition, the equipment not only has good performance but also is suitable for mass production of hard alloy inserts, which can perform large-scale grinding work. In addition, the grinding efficiency is very high and is consistently recognized by customers. Now our CNC PCD & PCBN tool grinding machines are on sale, welcome interested customers to come and buy.
Grinding technology for CBN grinding wheel
1) perfect the trace transverse vibration reduction measures to reduce the amount of feed processing equipment related factors in the process of vibration of the measuring axle, motor and belt pulley their amplitude, after the correction of dynamic balance of these parts for assembly, eventually establish and improve the vibration of the countermeasures, will be near the point of grinding wheel in the front of the level of vibration control in setting.
2) high-precision finishing technology
During the shape modification of the cutting edge of CBN grinding wheel, the rotary diamond dresser is used to obtain the sharp cutting edge of the grinding wheel, and the size of the cutting edge is adjusted to make it even, so as to optimize the shape modification state.
3) the surface texture optimization algorithm tries to reduce the relative vibration between the grinding wheel and the workpiece when grinding the rotating workpiece, but it cannot completely eliminate it.For the forced vibration caused by disturbance and the self-excited vibration caused by the change of cutting performance, the non-uniformity of the grinding surface can be reduced by using the algorithm.
4) development of low grinding force grinding wheel in order to ensure that the final grinding surface is homogenized under a small feed, a CBN grinding wheel is developed to reduce the grinding force.In order to ensure the cutting performance of the grinding wheel, the emphasis is placed on the type of abrasive particles, the shape of abrasive particles, the reduction of adhesive content and the improvement of adhesive.
Bejing Demina is manufacturing BT-150H pcbn tool grinding machine can grind many turning inserts with CBN grinding wheel. The efficiency is higher. The grinding effect is fine. Welcome many cuatomers to buy our products.
Problems In CBN Grinding MachineAlthough the use of CBN grinding machines is becoming more and more widespread, there are still some problems in the development of tool grinding machines. It is because I don’t know enough about the characteristics and development rules of the CBN grinding application. In terms of how to develop correctly, I act blindly. Many methods do not conform to its characteristics and laws, and subjectivity does not conform to the objective. Prominent manifestation is that there is a great contradiction between the social needs, technological level, and personnel quality and the development of the CBN grinding application itself.In the direction of guidance and in actual work, the one-sided emphasis on the advanced and superiority of the 2-axis CBN grinding machine grinding application. While despising the completeness of various technical means necessary for CBN application. In some practical promotion applications, when conditions are not available in all aspects. It is impractical to promote the application of CBN grinding. Resulting in the use of CBN grinding wheels to achieve the expected results, reducing the enthusiasm and interest of the manufacturers for using CBN tool grinding machines. As a result, the development of CBN grinding applications is not satisfactory. The weakness of basic applied research has become an important factor restricting the development of CBN grinding applications.Development Countermeasures Of CBN Grinding TechnologyIn work, everything is based on the actual situation, and effective and focused development of CBN grinding application policy is adopted. At this stage, our company’s CNC camshafts have fully selected CBN grinding technology. Demina produce the carbide tool insert grinding machine equipment is not only advanced in technology but also has very good grinding results. Users in need are welcome to visit and purchase.