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
Operation requirements of CNC Grinding Machine
1. Operators are allowed to operate only after they have passed the examination and obtained the operation certificate.
2. Operators must familiar with the structure and performance of each part of the machine tool, the various solenoid valves, stroke switches and buttons on the operation panel, the function of indicator lights and the working cycle of the machine tool. What's more, it is also important for operators to abide the traffic safety and shift system.
3. According to the requirements of the Grinder Instructions, the operators must know and memorize the lubrication parts, lubrication methods, types and grades of lubricants in detail, and maintain the oil according to the rules of the Grinder Lubrication Chart.
Before starting the work
1)We should wear protective equipment according to the regulations, check every part of the grinder in detail, report the problems in time and step by step, and do not drive unless the abnormality is ruled out.
2)Check the injection condition of each tank, whether the oil quantity has reached the specified oil level height. Whether the oil tube is installed in place and firm, and whether the initial indication of pressure gauge is in zero position.
3)Adjust the belt to an appropriate status.
4)The grinding wheel shield and the grinding wheel should firmly clamp, position correctly. Besides, the working table guide shield should in close contact.
5)Check the lubricating parts, sliding surfaces and transmission system, and inject lubricating oil. Check the relative position of the diamond tip and grinding wheel of grinding wheel dresser to prevent collision accident.
6)Connect the power supply and start the motor of the oil pump, grinding wheel rack and bedside rack in turn, pay attention to the operating state. If the abnormal condition or abnormal sound is found, the power supply should switch off immediately.
7)Start the grinder and idle for 2 to 3 minutes to check whether the movements of each part are normal. If the mechanism fails, the bearings are overheated, the oil pressure is insufficient, the grinding wheel swings and the table move unsteadily, the power supply should cut off and measures take to deal with it.
8)Check whether the motor of the cooling pump is working properly and the coolant is unblocked.
During the installation process
1)Check the new grinding wheel carefully, if there are cracks or scars, it is strictly forbidden to use. And the new grinding wheel shall carefully balance twice, that is, once before installation, once after being corrected with diamond for the spindle.
2)When installing a new grinding wheel, the special paper cushion of 0.5-2 mm should insert between the grinding wheel and flange. Grinding wheel flange bolts must tighten even with a special wrench, and forbidden to tighten with lengthened pipes, so as to prevent the wheel from cracking.
3)After the new grinding wheel is installed, the protective door is closed and the idle operation is carried out at the working speed for not less than 5 minutes. The operator should avoid the front and confirm the correct installation. Only after the operation is normal, can the grinding wheel work.
4)After the new grinding wheel has correct and position memory has been done, it should test and correct according to the regulations. If there is any abnormity or collision, it should stop urgently and the position memory should restore.
The PCD tool grinding machine is a precision instrument commonly used on the market today because its efficient production is widely used by users. But even the best equipment will have a breakdown. When a tool grinder fails, you must first find out the cause of the failure. The following PCD tool grinding machine manufacturer Demina will give you an analysis of some common faults and causes of failure of the PCD tool grinding machine.
The main cause of common failure of PCD tool grinding machine
1) Overheating of the grinding head spindle
The main cause of this phenomenon is the mixing of impurities in the hydraulic oil. Such as dust, iron and so on. Impurities in the hydraulic oil can block the small oil holes in the bearing bush. Causing some hydraulic chambers to have no hydraulic oil, making the spindle unable to form a symmetrical pressure oil chamber. The main shaft is not in a pure liquid state when it is rotated and generates friction with the bearing bush to generate heat. After disassembling the surface grinder spindle and inspecting each component.
It was found that the spindle roundness was not excessive, but the surface finish was poor. The roundness of the inner hole of the bearing bush is not excessive. The surface of the inner hole is scratched, and the cross-section of the bearing bush is scratched. The capillary oil holes in the bearing bush are blocked. The metal surface sandpaper can be used to polish the surface of the main shaft and the inner end surface of the bearing bush.
2) Poor grinding finish
radial runout of the spindle is out of tolerance, resulting in a large vibration of the grinding wheel during grinding. Which results in a poor surface finish of the ground workpiece.
3) Spindle radial runout tolerance
The main cause of this phenomenon is the collision of the main shaft or the deformation of the force. The roundness of the inner shaft of the support shaft of the main shaft is out of tolerance.
Demina specializes in the production of various types of PCD tool grinding machines. We have advanced technology and talents. The equipment produced is of good performance, reliable quality, and reasonable price. Welcome everyone to come and buy.
Key points of use APE-40 UP- sharpening machine
APE-40 UP- sharpening machine is high-precision mechanical equipment for metal tools such as turning tools, drill bits, milling cutters, engraving knives. And computer engraving machines, engraving and milling machines, CNC, cutting plotters, engraving machines, marking machines, etc. Grinding.
In general, the APE-40 UP- sharpening machine uses advanced automatic cleaning and automatic slag collection during operation. Imported parts of the electrical appliances and key parts are imported. And the functions of the whole machine have reached the international advanced level. The precision sharpening machine is mainly used for the grinding of high-grade imported knives. Its characteristics are reciprocating with imported linear guides. The grinding wheel speed is imported inverter. And the speed can adjust arbitrarily according to the grinding condition.
Not only that, when the sharpener is not in use, it is necessary to wipe the water stain on the knife holder and put butter or oil on the machine to prevent the machine from rusting. Moreover, the oil filling hole on the machine must fill with oil before going to work every day. In addition, the user must concentrate on the process of sharpening the knife with the sharpener and the process of picking up the blade to prevent personal injury caused by danger.
Since the APE-40 UP- a sharpening machine is a dangerous machine. It is necessary to use the machine in strict accordance with the operating procedures to prevent accidents caused by improper operation. At the same time, the grounding of the sharpening machine should firm and reliable. And the grinding length should easily adjust with the change of product specifications, and the locking is reliable.
Grinding quality requirements for APE-40 UP- sharpening machine
APE-40 UP- sharpening machine is indispensable mechanical equipment for grinding straight-edged blades. Good grinding equipment can not only greatly improve the working efficiency of the working machine. But also make the grinding work simple and convenient. In general, the grinding quality of the sharpening machine requires that the sharpened edges are all in a straight line. Compared with the manual grinding, the strength of the blade is increased, and the service life and processing capacity of the blade are increased. At the same time, the grinding quality requirements of the sharpening machine also include that the straightness of the machined surface after grinding should no more than 0.05mm.
The surfaces roughness Ra of the machined surface after grinding should no more than 1.6ūm. The sharpened knife edge is sharp, without deflection and distortion.The grinding quality requirements of the sharpener are basically these. In addition, for the grinding length of the sharpener, the equipment should able to effectively grind the longest length of the blade specified by the model and flatten the blade. All four corners are ground out.
Purchase points OF Grinding machine
Since the use of the sharpener is so extensive, what points should we pay attention to when choosing?
The sharpening machine has a great effect and is widely used. However, if a company wants to purchase a suitable sharpening machine, this should determine according to actual needs. Do not buy the most expensive ones, only buy the most suitable ones. Regarding the purchase of APE-40 UP- sharpening machine, we need to know the difference between the length of the blade. The accuracy of cutting, and the degree of automation according to the need. The types of the sharpening machine and the planned model.
Then there are seven main points in the purchase of the sharpening machine. Generally speaking, the blade material, length, cutting edge type, cutting material, cutting precision, and the number of blades that need to be ground every day are different. The grades of the sharpeners used, the maximum grinding length and the degree of automation are also different. So the company can purchase different grades of sharpeners according to these aspects.
Demina is a professional manufacturer of sharpening machines, now . Welcome users who need to come to buy.
The company's core competitiveness in technology
The traditional tool grinding skills and software technology are closely integrated to achieve digitization of grinding skills and the popularization of intelligent tool grinders. Control technology of machine tool and application software including grinding process are the soul of CNC tool grinder. Are the tool to rapidly and continuously meet customer's personalized needs. Are the concentrated expression of a company's service experience. Market insight and collective wisdom in products. And are the key to avoid homogeneous competition with other manufacturers.
Demina is devoted to the research and development of the core technology of CNC tool grinder. In which software technology plays a key role in data processing and control of tool grinder. First of all, there is a congenial relationship between software technology and tool grinding. The complexity and diversity of tools can satisfy with the flexibility of software. The requirement of skilled operation technology for grinding can also satisfie with the high intelligence of software. Secondly, the use of software technology can reduce the complexity of the machine tool structure. These mechanical parts have a long manufacturing cycle. The software can greatly shorten the cycle of equipment development, and even reduce costs. Thirdly, the product renewal caused by market competition requires tool manufacturers to provide personalized services. That is the supply of non-standard tools. The maintenance and upgrading of software can meet the changeable needs of customers.
The company's achievements
With many years of efforts of technical developers. In 2011, we successfully developed an intelligent control system FLEX V2.0 for 5-axis tool grinding in China. A total of 9 patents and software copyrights have been obtained, which cover many disciplines. Such as structure design, motion control, geometric operation, video and image processing. And database management, and cover the whole field of tool grinding, tool detection, and tool business management. Besides, we successfully developed the first CNC diamond tool grinder BT-150B in 2012. Which is constantly upgraded and replaced.
PCBN tool is an ideal tool material for the dry cutting process
Due to economic and environmental reasons, dry cutting has become a key research topic in the field of mechanical manufacturing in recent years. Let's first look at the wet cutting process due to the use of cutting fluid problems:
1. Long-term exposure to the air or cutting heat caused by cutting fluid fog volatilization, easy to pollute the environment, harm the health of the operator. Cutting fluid sulfur, chlorine and other additives more harmful, affect the quality of the processing surface.
2. The use of cutting fluid affects the processing cost. According to statistics, cutting fluid accounts for 15% of the production cost, while tool cost only accounts for 3% ~ 4%.
3. Cutting fluid leakage, the overflow will pollute the environment, easy to occur safety, quality accidents.
4. The transmission, recovery, filtration and other devices of cutting fluid and their maintenance costs are relatively high, which increases the production cost.
Advantage of PCBN tool dry cutting process
As a result of the above reasons, dry cutting processing technology in the western industrial developed countries have a considerable application. Compared with wet cutting, our recommended dry cutting process can make full use of the cutting performance of the tool and greatly increase productivity. The mechanism is because the cutting speed is very high, the generated heat is concentrated in the front of the cutting tool so that the material near the cutting area reaches the red hot state, yield strength decreases, and thus achieve the effect of improving the cutting efficiency. The use of dry cutting technology is the premise of higher cutting temperature, the strength of the cutting material has decreased significantly, become free cutting, and the strength of the cutting tool material in the same state to have a better red hardness and thermal stability, but also have better wear resistance and adhesive resistance.
Suitable for dry cutting process of cutting tool material is ceramic, metal, ceramic, coated carbide and materials and so on, but in terms of red hardness and thermal stability. PCBN material is most suitable for the dry cutting process of cutting tool material, and as a result of PCBN cutting tool material has the advantages of more suitable for high speed under the condition of dry cutting. Using PCBN cutting tool cutting grey cast iron of dry cutting and cutting wet contrast can be seen in both cases: PCBN in high speed dry cutting condition, specific humidity higher cutting tool life.
Cubic boron nitride blade introduction
Cubic boron nitride blade is synthesized with cubic boron nitride powder and a small amount of binder under high temperature and high pressure by manual method. Its hardness is second only to diamond but much higher than other materials. Therefore, it is collectively referred to as super hard cutter with a diamond cutter.
Performance of Cubic boron nitride blade
It has a very high hardness, thermal stability, and chemical inertness. Its thermal stability is much higher than that of the diamond, iron series of metal elements have greater chemical stability. So it is often used in the cutting of ferrous metal. Cubic boron nitride blade is a major contribution to metal processing. Leading to revolutionary changes in cutting, cutting technology is the second leap. According to the structure, it is divided into welded composite cubic boron nitride blade and integral polycrystalline cubic boron nitride blade. The former is composed of various turning blades or other boring tools by welding the cubic boron nitride composite layer to the carbide substrate. While the latter is a whole polycrystalline structure blade.
Cubic boron nitride blade is mainly used in gray cast iron, wear-resistant cast iron, various high hardness materials. (such as cold and hot tool steel, high-speed steel, bearing steel, powder metallurgy steel, powder smelting metal, martensite stainless steel, high strength steel, high manganese steel, white cast iron, austenitic iron, etc.).
Application characteristics of welded composite cubic boron nitride blade
Welding composite cubic boron nitride tool is mainly used for finishing. Due to its poor toughness and impact resistance (brittle) is insufficient, can't afford a larger cutting force (related to the tool Angle size). In the intermittent process is easy to collapse a knife, when use turning depth (unilateral machining allowance) best under 0.2 mm is better. And high-speed cutting (can't choose low speed), the village of material has a good wear resistance, heat resistance, but require high grinding.
Application characteristics of integral cubic boron nitride blade
The integral cubic boron nitride sheet can be processed in a continuous way, and when sand inclusion or white mouth casting does not break the edge. In actual production and application, if the welding composite cubic boron nitride cutter breaks the edge. Or needs rough machining or finishing with a knife, the integral cubic boron nitride (PCBN) blade is often used.
PP-60N drill sharpener uses a precision 6-claw chuck for easy setup and accurate and fast grinding. The spindle is equipped with two discs and a flat grinding wheel at the same time. And the center of the cutting edge can thin at one time, which can eliminate the trouble of the grinding wheel replacement time and the grinding wheel recalibration. Double cam-type: Both single and double-edged tools can be ground. Easy to operate. Mechanical specifications Grinding tool types: drills, class drills, chamfering tools, screw taps, end mill tips, round bars, and other tools.
A correct specification of using PP-60N drill sharpener
The bit sharpener is a high-precision grinding machine. It must be standardized during use to prevent accidents. The operation specifications of PP-60N drill sharpener are as follows, I hope everyone can remember.
1. Check whether the grinding wheel is tight and eccentric before using the equipment and whether the wear is serious. If you cannot meet the usage requirements, be sure to adjust before using.
2. Safety measures such as must wear protective glasses when operating the sharpener. It is strictly forbidden to adjust the lock tool holder greatly when the grinding wheel is running. If it needs to adjust, the grinding wheel must stop.
3. In the process of sharpening the knife with a sharpener. Remember that the feed of the tool in the direction of the grinding wheel should not too large, and it is strictly forbidden to operate in a brutal violation.
4. The grinding machine needs different grinding wheels for the grinding of different tool materials. It is strictly forbidden to grind high-speed steel tools on the alloy grinding wheel. The general-purpose grinding wheel is a resin grinding wheel.
5. PP-60N drill sharpener's common accessories must place in a designated position. Can not repair tools, must scrap.
6. After the machine is used, the work light and the grinding machine must turn off. After the operation, the dust generated on the work surface and the surrounding area must clean up in time.
7. When the sharpening machine has been used for a period of time, especially the new machine. The grinding machine must maintain in strict accordance with the maintenance procedures, and fill in the relevant record form. Remember to turn off the power supply during maintenance to avoid accidents.
8. , so now many industries can use the device. And the high performance and high quality of the equipment are also welcomed and used by users.
Demina's PP-60N drill sharpener has made an important contribution to the company's grinding production. But many users do not have a deep understanding of the use and maintenance of the blade. So the blade of the sharpener often wears out. It is important to know that if the blade is worn, it will seriously affect the quality and efficiency of the work, so we must master the use of the sharpener blade.
Precautions OF Use the drill sharpener
BEIJING DEMINA PRECISION MACHINERY CO., LTD. sets a complete set of grinding machine manufacturers to remind users here, the blade of the bit sharpening machine should pay attention to three aspects when using.
The first one is rough grinding. The purpose of rough grinding is to remove the defects of the edge of the sharpening machine and form the initial shape of the knife-edge angle so that a relatively large feed can use.
The second one is fine grinding. Fine grinding is the main step of the sharpening machine. Uniform micro-feeding and full cooling are two key points worthy of using the sharpening machine when grinding with a sharpener. When the surface is silver-gray and there is a tiny burr in the back of the blade, the fine grinding is over.
The third is photo-reinforcing. Generally, the photo-reinforcing refers to the grinding wheel or the tool holder moving a few strokes without using the grinding machine to increase the straightness of the cutting edge and the sharpening machine edge. The purpose of grinding the surface is self-contained.
Parameters OF PP-60N drill sharpener
Worktable left and right stroke: 250mm
Worktable front and rear stroke: 180mm
Grinding wheel head lifting distance: 165mm
Grinding wheel head rotation angle: 360°
The bevel angle behind the drill: 0°～18°
Tip end angle: 40 ° ~ 180 °
Wheel size: 180 x 32 x 31.75mm180 x 19 x 31.75mm
Grinding wheel speed: 3,600 rpm
Motor: 60n: 1/2hp, 220v/380v80n/100: 1hp, 220v/380v
With the development of drill grinder equipment, drill grinders are now used more and more widely. In particular, the Micra-10 small drill grinder manufactured by Demina. This equipment is grinding machine equipment developed and produced by our company's technical staff. This equipment has superior performance and high grinding efficiency and will be used by users once it is promoted. However, there are still some issues to be aware of when using it.
Steps for the usage of small drill grinder
1. First, confirm the material of the drill bit, select the appropriate grinding wheel according to the material of the drill bit, and install it on the equipment.
2. Confirm the diameter of and select the collet configured by the equipment according to the diameter of the drill bit. Generally, the collet is ER20 or ER25 or ER40. Each manufacturer uses different standards and equipment sizes.
3. Select the accessories and then clamp, adjust the grinding amount, turn on the Demina drill grinder, run the equipment, and observe the operation of the equipment.
4. The equipment is operating normally, and the grinding machine is started. First, the grinding of the corners is performed, and the corners of the corners are ground. The size of the horizontal blade can generally be adjusted through the screw above the grinding point of the static point of the equipment. This adjustment must also be adjusted according to the diameter of the drill.
Precautions for small drill grinder
1. Pay attention to the selection of the appropriate grinding wheel for the small drill grinder.
2. Some high-speed rigid drills may be sharpened on one side due to their poor symmetry. Fine-milled drills are better.
BEIJING DEMINA PRECISION MACHINERY CO., LTD held a new product presentation of the 2019 agent conference and horizontal machining center BT-200 tool grinder at the Beijing plant on March 14th. This also announced that the device was officially launched to the market.
BT-200 tool grinder is the first horizontal machining center made by DEMINA brand in China. It is also a new grinding machine developed by DEMINA PRECISION MACHINERY CO., LTD.
After achieving the stable mass production of the mass production vertical processing unit BT-200. The equipment brought together the advantages of the team of purchasing, manufacturing, and quality to launch the first localized horizontal machining center. The equipment achieves 100% localized procurement rate of components. And also follows the DEMINA brand's pursuit of high quality and is committed to bringing more cost-effective products to customers in China and abroad.
This model is equipped with 500mmx500mm pallets and has a wide application market. It is especially suitable for multi-variety and small-volume flexible processing of aluminum alloy workpieces. Can apply to automotive, rail transit, engineering machinery, energy, aerospace, home appliances, tools and machinery parts processing and other industries.
Main features of BT-200 tool grinder
1. High rigidity
The high-rigid main structure and the three-point support base ensure long-term stability of machining accuracy.
The XYZ shaft is made of high-rigidity roller bearing guides for precision and durability.
2. High speed
The 15,000 rpm high rigidity electric spindle is a guarantee of higher processing efficiency.
Three-axis rapid feed with a feed rate of 60m/min.
3. High precision
The XYZ axis is equipped with a grating scale and a high-precision rotary indexing table.
As a professional , DEMINA produces all the equipment independently developed by our technicians, and all the equipment are factory direct sales, no middlemen earn the difference. Users who need it are welcome to come and buy.
DEMINA successfully developed the 2-axis horizontal machining center BT-150H tool grinder. Which was launched on March 14. This model not only carries a flexible rotary spindle for a wider range of machining. But also a high-rigidity spindle and a robust bed structure for powerful cutting capabilities. It can contribute to the manufacturing and production of aerospace, energy, agricultural machinery, construction machinery, auto parts, and other fields.
At present, our entire society is undergoing rapid changes, and the trend of reducing the labor force and EV*1 has brought new problems to the manufacturing industry. DEMINA has developed a that customers can safely use for the needs of the aerospace industry and the energy industry. Agricultural machinery construction machinery and other industries. Committed to giving customers a wider range of processing freedom and superior cutting performance experience.
Features of 2-axis PCD&PCBN tool grinding machine
1. A wider processing range
By mounting a flexible rotary spindle, it is possible to carry larger workpieces on the pallet. The spindle rotation range is 230° (-210° to +20°). And the superior spindle approachability ensures a large processing range and increases the possibility of process intensive.
2. Stronger cutting performance
DEMINA's unique high-rigidity 15000 min-1 spindle enables high-efficiency machining. And the optional 8000 min-1 high-torque spindle makes heavy-duty machining of difficult-to-cut materials possible. At the same time, the equipment adopts a rear column method that can simultaneously satisfy high speed and high rigidity. And can effectively suppress the structure of the Y-axis column such as the left-right symmetrical type of thermal deformation and heat conduction unevenness. And constructs an extremely sturdy Platform. Support for powerful cutting.
3. Higher production performance
In the long-term development of general-purpose equipment specifications and the high reliability and maintenance of mass-produced equipment. JTEG has accumulated a wealth of experience to effectively support the equipment's utilization rate. In addition, the pallet of the equipment is common to the pallets of the existing 2-axis machine. And the 5-axis machine and the 4-axis machine can be easily combined to form a flexible production line.