Ettevõtte nimi:BEIJING DEMINA PRECISION MACHINERY CO., LTD Tel 0086-10-62965622 0086-13910819265 Meil:[email protected] Aadress: No.1034, Building A, Hongfu Science Park, Beiqijia Town, Changping District, 102209, Beijing, China
The BT-560 tool measuring machine is a sophisticated instrument. It is mainly composed of a bed, a workbench, a headboard, a tailstock, and a transmission. Each part has its own function and is indispensable. Let me introduce the use and adjustment of the various components of the device.
Use and adjustment of tool measuring machine
1. Measuring the use and adjustment of the machine tool
The measuring machine is a box casting. The front of the bed can be used as an oil pool or with a separate hydraulic station. Comes with a separate electrical cabinet.
2. The use and adjustment of the workbench
The measuring machine table is mainly composed of an upper table and a lower table. Loosen the hexagon socket head cap screws on the upper two pressure plates and turn the adjustment handle. The upper table can rotate within the specified range to adjust the taper of the workpiece. After rotating the upper table to the desired angle, tighten the hexagon socket head cap screws of the two platens before grinding. There are two calibration marks on the right pressure plate, one for the taper and one for the scale. When the upper table rotates more than 6 degrees, the wheel frame must rotate at an angle to avoid collision between the tailstock and the wheel carrier.
3. The use and adjustment of the headstock
The measuring machine head frame consists of a bedside frame and a bedside frame. The head frame can be rotated about the axis of the headstock floor. The angle of rotation can be read from the dial.
The headstock dial achieves stepless speed regulation through pulleys and frequency converters.
The pre-tightening force of the V-belt at the end of the head frame motor is regulated by the movable head frame motor. Adjust the pre-tightening force of the V-ribbed belt on the headstock turntable by turning the eccentric sleeve. When turning the eccentric sleeve, loosen the fastening screw first. Then transfer the eccentric sleeve to the appropriate position and tighten the fastening screw.
Adjust the gap between the headstock spindle and the bearing by rotating the calibration sleeve. The calibration sleeve rotates clockwise and the gap increases. On the contrary, the gap decreases. When grinding with a dead angle method. The clearance can reduce to zero and the spindle can lock. When the spindle needs to rotate, there must be a certain gap between the spindle and the bearing. A general radius of 0.005mm is suitable.
4. The uses and adjustment of the measuring machine tailstock
Turn the wrench to retract the tailstock sleeve.
The pedal moves the tailstock sleeve back and forth automatically. When the foot is at the bottom, the sleeves recede; when the feet are relaxed, the sleeves move forward.
The force of the top workpiece can be adjusted by rotating the adjustment grip. When grinding the slender shaft, the force of the top surface workpiece should not be too large to avoid bending the workpiece.
The diamond pen can mount on the tailstock for repairing the grinding wheel of a cylindrical workpiece with a lower roughness requirement.
Advantages OF China BT-560 tool analyzer
(1) The roundness error is small, and the workpiece deformation probability is small when the workpiece is processed.
(2) All the processing can complete in one loading, thereby avoiding errors caused by multiple loadings and reducing labor intensity.
(3) The small footprint allows for more space for operation.
(4) No dust is generated during processing, so the processing accuracy can not affect. And the service life of the machine can extend.
Safety Operation Procedure China BT-560 tool analyzer
(1) Before starting the machine, it is necessary to carry out the corresponding inspection. And the safety device, the baffle, the travel limiter, etc. Can drive only after there is no problem.
(2) When the gear is lubricated, the grinding machine should stop before lubrication.
(3) the electrical system should protect from moisture, damage and keep dry to prevent accidents.
(4) During the operation of the grinding machine, the workpiece cannot be measured. And the various parts of the grinding machine cannot touch to prevent danger. The feed should carry out slowly to prevent damage to the grinding wheel.
Maintenance of BT-560 tool measuring machine
(1) The appearance, motor, and heat dissipation parts of the measuring instrument should be kept clean and tidy, free from dust and dirt.
(2) Perform necessary inspections on the tightening handle, feed handwheel, screws, and nuts. Is it normal and correct?
(3) How tight the screws and belts are, whether they need to tighten or adjust.
(4) The motor and electrical box should clean frequently, and the button switch should inspect regularly. If there is damage, it should replace in time.
Demina is a professional BT-560 tool analyzer manufacturer with advanced technology and good equipment performance. Welcome to come to the test machine.
As the hot summer comes, the temperature in some workshops is also rising. As a result, the precision equipment in the workshops starts to have problems, the machining accuracy becomes unstable, on and off, and some machine tools break down for many times and strike from time to time. Have these situations occurred in your factory?If these problems occur in the factory, we should analyze the root cause and solve the problem from the root. The more sophisticated the equipment is, the more stringent the environmental temperature requirements are, which requires the attention of plant managers.Do a good job in the prevention of CNC equipment1. Of course, for ordinary CNC equipment or not precision machining, many factories are unable to do a constant temperature environment, but the factory must do a good job in the prevention of CNC equipment to ensure the normal operation of CNC equipment.2. The air conditioning of the distribution box can work normally.3. Distribution box door sealed tightly, some units simply put the distribution box open heat, which is very dangerous, the outside dust into the electrical box, a long time will also cause device damage.4. Power supply, drive circuit board and other cooling fans can operate normally, heat dissipation conditions are met.5. Clean the ventilation ditch and heat sink on the high-power circuit board.6. Maintenance personnel should often patrol, find hidden trouble to eliminate in time.
Superhard cutting tools
Superhard cutting tools play an important role in modern machinery manufacturing. Like the automobile, railway vehicle, aircraft, machine tools, ships, such as the rapid development of manufacturing industry, new type of composite material applied continuously, and modern processing of high speed, high efficiency, high precision of processing characteristics of the cutting tool shock resistance put forward higher request, at the same time to promote the development of superhard cutting tool industry, diamond, and cubic boron nitride superhard cutting tools have been widely used. However, the impact resistance of super-hard tools is poor, especially in intermittent cutting, milling, and wide cutting edge processing, the phenomenon of edge breakage is easy to occur.
Parameters of superhard cutting tools
The reasonable determination of blade shape and geometric parameters is very important to give full play to the cutting performance of the tool. In terms of tool strength, the tip strength of various blade shapes is in order from high to low: round, 100° diamond, square, 80° diamond, triangle, 55° diamond, and 35° diamond. After the blade material is selected, the blade shape with the highest strength should be selected. Hard turning blades should also choose the largest tip radius, rough machining with circular and large tip radius blades, finishing the tip radius of about 0.8 microns.
Hardened steel is red and soft ribbons, brittle, easy to break, not bonding, quench steel cutting surface quality is high, generally does not produce chip tumor, but the cutting force is larger, especially the radial cutting force than the main cutting force is larger, the tool should be used negative front Angle (go≥-5°) and a large back Angle (ao=10°~15°). The main deflection Angle depends on the rigidity of the machine tool, generally taking 45°~60° to reduce the workpiece and tool flutter.
CBN, hardness after diamond.CBN is an extremely hard tool material second only to diamond and generally works best when the hardness of the material is greater than 48HRC (CBN wears out quickly when soft materials are processed). Temperature up to 2000℃ is also excellent red hardness. Although more brittle than carbide and less thermal and chemical stable than ceramic, it has higher impact strength and fracture resistance than ceramic tools and can cut hard metal for less rigid machine tools. Furthermore, the appropriate custom CBN tool can withstand the cutting load of high-power roughing, the impact of intermittent cutting, and the heat and wear performance required for fine machining.The proper customization of the specified process includes the rigidity and edge grinding of the machine tools and fixtures large enough to prevent microscopic spalling, and the matrix of the tool is a material grade with high CBN content. A high CBN content material grade is necessary for these specified processes because they have the high thermal conductivity and toughness required for high-speed machining under heavy cutting edge loading as well as for severe discontinuous cutting. These properties allow this grade of tool material to be used for roughing hardened steel and pearlite gray cast iron.Materials with low CBN content are more brittle than those with high CBN content, but they are better for hardened ferrous metal processing. They have lower thermal conductivity and relatively higher compressive strength to withstand the heat generated by high-speed cutting and negative rake Angle. The higher temperature of the cutting area softens the workpiece material and helps break chips, while the negative front Angle strengthens the tool, stabilizes the cutting edge, improves tool life, and allows cutting depth smaller than 0.25mm.Because CBN cutters achieve a surface finish superior to 0.4 m and maintain a coaxiality of ±0.012mm, dry-hardened workpieces are often an attractive alternative to dirty, enhanced cooling grinding. Although CBN is a preferred tool material for hard turning and high-speed milling, the range of applications of ceramics and CBN is so strikingly overlapping that it is necessary to use cost-benefit analysis to determine who gets the best results.
BT-150N tool grinding machine is a four-axis CNC tool grinder, which is composed of four axes. Including the wheel swing axis (X-axis), the wheel inclination Angle (b-axis), the workpiece horizontal rotation axis (c-axis) and the workpiece feed axis (Y-axis).The workpiece feed axis (Y axis) is equipped with a grating ruler for closed-loop position feedback to ensure the grinding accuracy at the micron level.
Application of BT-150N Ultra Hard Tool Grinding Machine
BT-150N Ultra Hard Tool Grinding Machine is suitable for medium - volume production of alloy blades, PCD blades and CBN blades. As long as the alignment is completed, the system will automatically finish grinding under the action of heavy hammer gravity at the press of the switch, realizing the ideal state of "constant pressure grinding, flexible feed".The machine can be switched to manual mode through the control panel to suit the production mode of small and medium batches and various varieties.
Main machine and general configuration
1. variable speed (1000-8000 rpm), spindle motor power: 5.0Kw; And the cooling water system of the equipment has circulating water, which can keep the water of the cooling water system in a clean state at any time;
2. Spindle Declination can be arbitrarily adjusted -5°-25°;
3. Max oscillation length is 30mm, max oscillation frequency is 50times/min;
4. Optical CCD system with 80x zoom and 12 inch monitor;
5. IPC(Industrial Personal Computer) and grinding application software(including video display);
6. One Diamond Grinding Wheel;
7. Height fixture;
8. Wooden case.
For high-precision processing, the temperature problem is absolutely not to be ignored, because the temperature difference is the enemy of precision. To be specific, materials will expand and contract in heat and cold. The steel we use will expand in a straight line to produce a change of 12 m per meter with a temperature change of 1°C. This is true of every machine in every corner of the world.If we don’t care about temperature as an important issue, how can we talk about precision? Most machine combinations are made of steel and cast iron, which can change shape and length depending on room temperature and the heat generated by the machine itself!Factories without experience in precision machining often attribute the instability of precision to the precision of the equipment. And factories with experience in precision machining, they all know that this is the most basic common sense, the environmental temperature and thermal balance of machine tools will attach great importance to. They are well aware that even highly sophisticated machine tools can achieve stable machining accuracy only in a stable temperature environment and a state of thermal balance.For high precision machining of less than 3 m grade, the temperature shall be controlled at a constant 20℃ with fluctuations of less than 0.5℃/ hour, and the air conditioning system shall maintain a constant ±1℃ temperature difference throughout the day. If the precision requirement is not that high, the control can be relatively broad, but the manager must have the concept of temperature influence on precision.
The continuous development of the sharpening machine industry
At present, the technical level of the world's sharpening machine is based on the production-promoting sharpening machine. The development in the next 20 years will still the same. On the basis of further improving precision, efficiency, automation, intelligence, and networking. It will gradually the processing unit and the cutting-edge flexible manufacturing system have been transformed. While the Chinese grinding machine industry has experienced the development process of learning, imitation and independent innovation. Although the technology has developed, it is currently in precision, efficiency, automation, intelligence, and environmental protection. There is still a considerable gap between the other aspects and the advanced level of foreign countries.
At present, there are few enterprises in China that can provide complete sets of services for users. And they lack the ability to provide complete solutions or undertake more complex project general contracting projects. Product development costs are high, research and development are too difficult, and enterprises are not willing to invest. The production capacity of the industrial-technological transformation project is too large. And the trend of large-scale and heavy-duty technology transformation projects is obvious. This makes the development of numerical control systems and key functional components seriously lagging behind, and becomes a factor restricting the sustainable development of the industry. As a result of the main production model, the company can only maintain a cycle of simple reproduction, unable to develop independent technology.
The sharpening machine industry is a technology-intensive, capital-intensive, talent-intensive industry with many product categories. Multiple varieties, small batch sizes, high individualization requirements, high requirements for production experience, and long investment cycle. The organizational structure of the enterprise is also important. The company has more resources but cannot take the lead in transformation. Can not have more achievements in technology leadership, resulting in technical isomorphism in the industry, low-level competition. And the overall economic efficiency of the enterprise is low.
Compared with other types of enterprises, traditional state-owned enterprises have obvious gaps in economic efficiency. Technological innovation, and meeting market needs. The phenomenon of indulging in scale is widespread. However, if they have more resources, they cannot take the lead in transformation and cannot there are more realities in technology leadership. Resulting in technical isomorphism in the industry, low-level competition, and low overall economic efficiency of the enterprise. Therefore, in order to continuously develop the grinding machine industry in China, some enterprises in China must continuously carry out innovative research and development of equipment. Production, and strive to improve the technology of China's knife sharpener industry.
How does the sharpener become sharper?
When the user uses the APE-40 UP-sharpening machine, the operation is performed with a small amount of force. But both hands are raised, and the angle of the sharpening is also increased. And only the edge is sharpened, and the blade surface is not worn. Due to the small operating force of the sharpener, even if this happens occasionally. As long as it is a micro-cut, it does not generally constitute a blade advance advancement. But it also constrains the sharp advancement.
Both hands are lowered, and the angle of practice sharpening is reduced. No matter whether or not the force is applied, the edge and the blade face cannot be worn. And only the inner edge line can ground. In this case, although the edge line is rounded, the edge line is rounded. There is no damage to the cutting edge.
Adhere to the height of the knife sharpener of the CNC sharpening machine. And the strength of the hand according to the blade is increased due to instability, and the blade is suddenly sinking. Due to the elastic deformation, the sinking of the blade causes the tip to lift 2.620. The practice sharpening angle drops to 22.210. The increased force is carried by the blade to the inner edge line. Although this causes the edge line to be rounded and untidy, it is useful to protect the cutting edge.
Adhere to the height of the knife blade, and the instability of the hand of the knife causes the blade to tilt. Due to the elastic deformation, the blade does not only increase the angle of the sharpening. But the blade tip is lifted by 1.323. The angle is reduced to 23.899. The situation is similar to the third case and can also protect the edge.
Prominent point OF APE-40 UP- sharpening machine
APE-40 UP- sharpening machine is high in precision, and the quality of the product is high in precision. The high precision is reflected in the most basic material of the blank casting. It is also important to cooperate with some parts used in the manufacture of grinding machines. Generally, the main shaft is the original spindle of the grinding machine. The vibration and noise are very small. The screw on the bed is also a precision threaded screw or ball screw, which must import after precision grinding. In the country, it is an assembly problem.
The same machine tool parts are assembled. The effects of different designers are different. This requires experience, but a long time of tempering and tacit understanding. Final molding, when the sharpener is produced, the designer must know the precision of the grinding machine. The sharpening machine controls the precision of the wire, especially the small grinding machine, which is within 2μ so that the customer can buy the parts in the past to grind the workpiece below 2μ. The precision is related to the machine tool error, the machine errors The smaller the precision, the higher.
Beijing Demina Precision Machinery CO., LTD A professional grinding machine manufacturer, now . All sold to the user at the factory price to ensure the quality and price of the equipment. Welcome, everyone to come and buy, users who need it can also come to our factory to visit the test machine.
CBN is synthesized under high temperature and high pressure, and its hardness is second only to diamond. Besides, its thermal stability is much higher than diamond, with good chemical stability and no chemical reaction with ferrous metal elements at 1200 ~ 1300℃. Therefore, CBN tools are mainly used in ferrous metal materials, such as cast iron/steel, which are hard to process with high hardness.During the machining process, CBN tools can be divided into continuous cutting and intermittent cutting according to the working conditions. According to different working conditions, the replacement factors of CBN tools are different. For example, the replacement form of continuous cutting tools is worn, and common intermittent cutting Tool replacement forms include hemming, cracks, etc. The following Demina focuses on the replacement form of CBN tool intermittent cutting.1. Crushing bladeThis is a common form of damage when CBN tools cut steel and cast iron intermittently. It is a small cut in the cutting edge, in which several small cuts or pieces break off. The general notch size is equal to or slightly larger than the feed. If the cutting tool of the micro-chipping edge can continue cutting within the allowable wear limit, the out-of-tolerance needs to be replaced.2. SpallingIn the end milling process of steel and cast iron, shell-like spalling is most common on the surface of the rake. When the CBN tool end mills hardened steel (HRC58-65), a large area of shell-like peeling will appear on the surface of the rake, and this kind of wear will occur. The cutting speed can be increased, the feed can be reduced, negative chamfering can be used, and the edge of the blade has been dull.3. BrokenCBN cutting tools for cutting high hardness materials or intermittent cutting workpiece frequent breakage form. This is due to the excessive impact load when the intermittent cutting high hardness of the workpiece. And short time cutting after the occurrence of early damage, although the cutting condition. The appropriates cutting after a long time, but no tool change in time, because of the cutting tool material fatigue occurs a large fracture.4. CracksAfter a long period of intermittent cutting, the CBN tool produces fatigue cracks parallel to the cutting edge due to mechanical shock, and cracks perpendicular or inclined to the cutting edge due to thermal shock. As these cracks spread and coalesce, they cause the blade to crack or break.
BT-150HG cutter grinding machine the researches on new structures and new grinding methods have played a key role in the development of tool grinding machines. At the same time, the development of machine tool components has also played an important role in the development of machine tools. For example, the application of electric spindles. Due to the compact structure of the electric spindle and the real frequency conversion speed regulation. Some electric spindles are equipped with a constant temperature cooling water jacket to cool the spindle motor and the bearing. And the ceramic bearing is lubricated by the high-pressure oil mist, so it has been widely used.
The tool grinding machine machining center can realize high-precision and high-surface-quality workpiece processing to meet the special requirements of automotive. Aerospace and mold industries, thin-walled workpieces and high-light precision special processing requirements. Achieve high-speed machining, not only to provide a suitable high-speed tool grinder. At the same time, there must be a matching tool holder tool to be effective.
Features and uses of a five-axis tool grinder
is a grinding machine for tool making and tool sharpening. It has tool grinders, bit grinders, broaching machines, tool curve grinders, etc. It is used in tools and machinery manufacturers.
The structural design of the CBN tool grinder workbench usually meets the following requirements:
1. Tool grinding often requires roughing of all cutting faces in one setup. And the table should suitable for multi-blade machining.
2. The tool is mainly composed of various complex curved surfaces. So the structure of the worktable should meet the requirements of multi-axis linkage machining. And ensure that each motion axis does not produce motion interference within the working range.
3. The worktable should able to withstand the huge grinding force generated during rough grinding. And also ensure high precision during finishing. Therefore, the machine tool needs to have good rigidity, good stability, high motion precision, and small heat denaturation.
4. BT-150HG CBN tool grinder can grind tool.
Three ways of machining center OF BT-150HG cutter grinding machine
BT-150HG CBN tool grinder's main shaft gravity downward, the radial force of the bearing high-speed air running is equal, the rotation characteristics are very good. So the speed can increase, the general high speed can reach above 1,2000r/min, the practical maximum speed. It has reached 4,000 rpm. The spindle system is equipped with a circulating cooling device. The circulating cooling oil takes away the heat generated by the high-speed rotation, is cooled to a suitable temperature by the refrigerator. And then flows back to the spindle system. The linear axes of X, Y and Z can also feedback by linear encoders, and the bidirectional positioning accuracy is within the micron level. Since the rapid traverse reaches 40 to 60 m/min or more, the ball screws of the X, Y, and Z axes mostly adopt central cooling. Like the spindle system, the circulating oil passing through the cooling flows through the center of the ball screw, taking away heat.
PCD is hard, very hard. This makes the indexable blade with welded PCD tips extremely resistant to wear. Therefore, it is often used to process carbon fiber reinforced plastics (CFRP).PCD is very hard, and the complex process of grinding and welding an indexable blade with A PCD tip to the final contour is reflected in the following two aspects: First, the grinding process takes a long time, because diamonds are processed with diamonds.Second, processing costs are very high for the same reason. A few years ago, a completely new method of processing appeared on the market, using ultra-high frequency pulsed picosecond laser to process the workpiece to its final shape. With this laser treatment, the material is removed, leaving behind no thermal damage. Undeniably, it is very promising to process the high-precision blade in this way. But its processing process is very slow and complex, still inferior to the traditional grinding processing, especially for the cemented carbide processing.PCD tooltips are welded to the carbide substrate and processed, which is completely dependent on the customer’s own processing technology. If the PCD blank has been etched to facilitate the separation of independent PCD tooltips blank. The machining allowance is approximately 200 m as the surface is structurally modified to meet the etching depth requirements. The more work the laser machine does to replace the grinding machine, the less time and abrasive the grinding machine needs to process the carbide substrate and PCD tooltip to the final size.