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
BT-150D 4-axis CNC tool grinder ultra-fine grinding is achieved by the ability to trim a large number of equal-grain abrasive micro-blades on the working surface of the grinding wheel. These high-grained micro-blades can remove a small margin from the surface of the workpiece with microscopic defects and micro-dimensional shape errors. So that high grinding precision can obtain. And in addition, due to a large number of contoured micro-edges, the grinding under the premise of appropriate cutting. A large number of extremely fine cutting marks can leave on the machined surface to obtain a very low surface roughness value. Since there is significant friction, slip, polishing and calendering in the non-sparking stage, the surface roughness value can be further reduced. Below BT-150D CNC tool grinder manufacturer Beijing Demina Precision Machinery co., ltd to introduce to you how to achieve tool grinding machine processing superfine grinding?
Overhaul of CNC tool grinder
1. Detection and repair of the guide rail of the grinding machine bed
the V-shaped guide rail of the bed should meet the following accuracy requirements after inspection. No straightness in the vertical plane ≤0.01mm/m. No straightness in the horizontal plane ≤0.01mm/m. Non-perpendicularity ≤ 0.02mm / 250m; contact point requires 12 ~ 14 points / 25mm × 25mm.
After the surface guide rail of the bed is inspected, it should meet the following accuracy requirements. The non-parallelism of the V-shaped guide rail is ≤0.02mm/m. The non-straightness in the vertical plane is ≤0.01mm/m. The contact point requirement is 12～14° /25mm×25mm.
2. The detection and repair of the sliding saddle rail
After the inspection, the V-shaped guide rail of the sliding saddle should meet the following accuracy requirements. The non-straightness in the vertical plane is ≤0.01mm over the entire length. The contact point is required to be 10~12 points/25mm×25mm.
The sliding saddle plane guide should meet the following accuracy requirements after inspection: the non-parallelism of the V-shaped guide rail is ≤0.02mm/m. The contact point is required to be 10～12°/25mm×25mm.
3. Clearance adjustment between the grinding wheel spindle and the bearing bush
BT-150D 4-axis CNC tool grinder paints the shaft of the grinding wheel spindle and turns it against the bearing bush. Scrape the surface of the bearing pad with a scraper to make the contact point reach 12~14 points/25mm×25mm, then install and adjust. The clearance between the grinding wheel spindle and the bearing bush is adjusted to 0.0025~0.005mm, which can avoid the edge of the workpiece during grinding.
4. The balance between the grinding wheel spindle motor and the grinding wheel
The vibration of the grinding wheel spindle motor has a great influence on the grinding surface roughness, so it is necessary to dynamically balance the grinding wheel spindle motor. For the grinding wheel, it needs to be balanced twice. Firstly, after the grinding wheel is finished with a diamond pen, a rough balance is carried out. Then the grinding wheel is finely repaired with the grinding wheel after the oil stone or the finishing car, and then a fine balance is performed.
Beijing Demina Precision Machinery co., ltd specializing in the production of various types of grinding machine equipment. Welcome users who need to come to consult the BT-150D CNC tool grinder price.
Wear Patterns In Continuous Cutting1. Back tool surface wear: the most common form of wear is caused by the friction between the tool and the hard particles in the workpiece material. Serious wear will cause the surface roughness and dimensional accuracy of the processed workpiece to be out of tolerance, so a new CBN blade needs to be replaced.2. Crescent depression wear: occurs on the front of the blade, caused by the chemical reaction between the workpiece material and the cutting tool.Crescent depression wear can lead to deterioration in chip handling, affecting the quality of the finished surface, and excessive crescent depression wear can weaken the cutting edge and may lead to fracture.3. Pressure surface wear: the main reason is that the cutting speed is too fast, the feed is too large, the tool back Angle is too small and the pressure surface wear.4. Boundary wear: the main reason is that the main deflection Angle is too large, the feed is too large, the cutting speed is too low resulting in boundary wear.Damage Form In Intermittent Cutting1.Breaking edgeIt is a small cut in the cutting edge, several small cuts in the blade or a small piece is broken.If the micro – edge of the tool can continue to cut within the allowable wear limits, out – of – tolerance needs to be replaced.2. PeelingShell spalling often occurs on the front cutting surface when milling the end faces of steel and cast iron.In this case, the blade with negative chamfering and passivated edge can be used by increasing cutting speed and reducing feed.3. BrokenPCBN inserts 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 appropriate cutting after a long time, but no tool change in time, because of the cutting tool material fatigue the large fracture.Demina tool grinder can resharp the PCBN blade and remove the PCBN wear. It can make the PCBN blade new. Cutting efficiency remains high.
Dongguan Shilong KYOCERA Co. Ltd. It was registered and established in the industrial and commercial administration bureau of Dongguan city on August 27, 1995. Their Business scope contains design, development, production and sales of camera, lens, flash and parts (sell parts of the machine value more than 40%) camera, digital camera and key-module, inorganic non-metallic materials and products (special ceramics: high performance ceramic tools, high performance composite materials, artificial crystal: high-performance cutting tools), new electronic components (sensitive components: thermal recording head, optoelectronic devices, light-emitting diodes (LEDs) recording head, hybrid integrated circuits: LED drive circuit, TPH color printer head), new flat-panel display devices (LCD), inorganic non-metallic materials and products (special ceramics:High-performance products), kitchen utensils, TFT - LCD flat screen, screen material (backlight source and drives), precision 2400 dbi and above a high-resolution color printer head, printer parts, electrostatic capacitance type touch screen, resistive touch screens, automation machinery equipment and spare parts, ceramic heater and provide related after-sales service.
Method of operation of BT-150D pcd tool grinding machine
1. First, determine the diameter of the milling cutter. If you want to grind the 8MM end mill, use the 8MM collet and lock the cutter to the 50D sleeve.
2. Set the angle, the milling cutter sleeve slightly swing 4 ° (the bottom angle of the milling cutter is between 2 ° ~ 6 °).
3. Start grinding the bottom surface, for example, the milling cutter. Align the milling cutter with the grinding wheel, complete the tool setting step and then grind the bottom angle of the milling cutter. After grinding one edge and then replacing another cutting edge, the grinding is performed in turn.
4. Grind the center of the milling cutter to the escape angle, and swing the sleeve to about 10°. And then grind the center escape angle of each milling cutter.
5. Grind the second clearance angle of the milling cutter in turn.
6. Grind the side edge of the milling cutter, use the top to end the spiral groove of the milling cutter. Align the grinding wheel, and push the sleeve to grind the spiral side edge of the milling cutter.
With the continuous development of tool grinding machine technology, not only are the types of tool grinding machines diversified but also the scope of use is getting wider and wider. Among them, the most significant feature of tool grinding machines is the development and use of numerical control of tool grinding machines. Beijing Demina introduces the NC technology of tool grinding machine.The NC Technology Of PCD Tool GrinderThe numerical control of the tool grinder not only reduces the difficulty of the operation of the machine tool but also there is an innate connection between the technology and the tool grinder. The complexity and diversity of tools can satisfy with the flexibility of software. Therefore, the control unit of a tool grinding machine should give up the commonality of many types of equipment to meet the special requirement of tool grinding.The use of numerical control technology can reduce the complexity of the machine tool structure. And these mechanical parts have a long manufacturing cycle, which greatly shortens the equipment research and development cycle, and can even reduce costs. Secondly, in general, the user group of tool grinding machines is not large, and manufacturers are not enthusiastic about storing spare parts. Simple mechanical structures can also reduce the risk of future equipment operation. Product upgrades resulting from competition require equipment to be “flexible”, and software maintenance and upgrades can just meet its needs.The “NC system” and CAD / CAM software of the BT-150HG PCD tool grinder were not developed for these “non-mainstream” devices. Only can use dedicated and simple control units. The software technology plays a key role in the data processing and control of the tool grinding machine.In the development process of the PCD tool analyzer, the reciprocating swing of the grinding wheel that affects the quality of the tool edge is a priority issue. We abandoned the traditional crankshaft connecting rod swing mechanism and controlled the position, speed, and acceleration of the swing through electronic intelligent components, which greatly improved the accuracy and stability of swing motion. At the same time, it also brings other advantages such as short manufacturing cycle, simple maintenance, and easy operation. As an economical tool grinder, using an industrial monitor instead of a computer as a monitoring method not only reduces costs but also greatly reduces the failure rate caused by the computer, which is more suitable for the user group of small and medium enterprises.
CBN and PCD cutters
Casting in China has existed for thousands of years of history. From the Bronze Age to the industrial revolution. The machinery industry is inseparable from the casting, casting technology represents the level of national mechanical industry. Machinery industry to the plane, high-speed train parts, ship machinery, engineering machinery, power equipment, etc.. The equipment manufacturing industry, small to the basin of boiler bowl gourd ladle in the casting process. Such as when we see the countryside cast aluminum pots, aluminum pots, etc..
Casting workpiece can divide into two categories from the material: one is black metal castings such as gray cast iron, nodular cast iron, alloy cast iron, and cast steel. One is non - ferrous metal casting such as cast copper alloy, cast aluminum alloy. With the development of the mechanical industry, the performance of various casting alloys has been greatly improved. And casting parts machining is more and more used high-speed cutting and dry cutting. High-speed cutting and dry cutting tool development is the most rapid cubic boron nitride tool (CBN tool) and diamond tool (PCD tool). As the "teeth" of the industry, CBN and PCD tools provide the basis for difficult to process materials and batch high-speed cutting of castings.
Application of CBN and PCD tools
The domestic CBN and PCD cutters market has also expanded with the development of tool technology. At present, China's First Automobile Group has more than 100 CBN and PCD cutters. Many wood-based panel companies also use CBN and PCD cutters for wood products processing. The application of CBN and PCD cutters has furthered the research on its design and manufacturing technology. At present, the processing range of CBN and PCD cutters has expanded from traditional metal cutting processing to processing of stone processing, wood processing, metal matrix composites, glass, engineering ceramics, and other materials. From the analysis of CBN and PCD cutters applications in recent years, CBN and PCD cutters are mainly used in the following two aspects:
1. Processing of difficult-to-machine non-ferrous materials: When machining difficult-to-machine non-ferrous materials with ordinary tools. Defects such as easy tool wear and low processing efficiency are often produced, while CBN and PCD cutters can exhibit good processing performance. If use CBN and PCD cutters, the new engine piston material, hyper eutectic silicon aluminum alloy, can effectively process (the research on the processing mechanism of this material has made a breakthrough).
2. Processing of difficult-to-machine non-metallic materials: CBN and PCD cutters are ideal for processing difficult-to-machine non-metallic materials such as stone, hard carbon, carbon fiber reinforced plastic (CFRP), and artificial boards. At present, the application of laminate flooring and other wood-based panels (such as MDF) is becoming more and more widespread. The processing of these materials with CBN and PCD cutters can effectively avoid defects such as the easy wear of the cutter.
PCD Tool And PCBN ToolDiamond PCD tool:PCD tool characterized by long service life, high production efficiency, high surface finish and high machining accuracy.Compared with hard alloy and natural diamond tool processing efficiency and low cost, widely used in automotive, diesel engine, motorcycle, aerospace, home appliances, instruments and precision machinery and other industries.Polycrystalline cubic boron nitride PCBN tool:CBN super hard tools, professional finishing, mainly cutting quenched steel, alloy steel, tool steel, die steel, manganese steel – spring steel, bearing steel, chilled cast iron, high chromium cast iron, gray cast iron, powder metallurgy, Ni base and CO base high temperature alloy rockwell hardness (hrc45-80 °) between a variety of difficult to process high hardness steel.Features Of PCBN ToolFeature 1: good finish good finish of processing surface can reach (ra0.6-ra0.8) between;Feature two: super hard wear – tool hardness high wear resistance;Feature three: high cutting speed – high cutting speed can effectively improve the machining efficiency and reduce the cost.Demina precision company is specialized in PCD & PCBN tool grinding machine. Their BT-150H can grind the PCD & PCBN tools with good finishing. BT-150H is designed can grind angles and radii on standard and special turning and milling inserts, boring tools, grooving tools and many types of special turning tools. Beijing Demina specializes in the development and production of various grinding machine equipment. Interested users are welcome to come and buy.
Market analysis of BT-150HG PCD tool grinder
BT-150HG PCD tool grinder an upgraded product in which many aspects of the device have been optimized. Resulting in a significant expansion of its application range. We will talk about the facts and see why people choose BT-150HG PCD tool grinder and the actual application range.
The Precision BT-150HG PCD tool grinder system uses an advanced CNC system that is more powerful, more accurate, and simpler to operate. The various tools are applied to the actual, and the processing speed, idle speed. And the falling speed of the equipment can control so that the quality and processing efficiency of the product is obviously improved.
Moreover, the range of the tool grinder can customize according to the different needs of different customers. Which can see more humanized. Such equipment is particularly prominent in various non-metal molds, and thus industries such as automobiles, yachts, aviation, and wind power have benefited. In addition, the instrument industry has the opportunity to use the PCD tool grinder because it can process 3D surfaces to meet the needs of musical instruments.
The PCD tool analyzer is the most difficult and widely used technology in CNC technology. It integrates computer control, high-performance servo drive and precision machining technology into complex surface precision, automated machining. The five-axis linkage CNC machine tool is key processing equipment urgently needed by the civil industry and military departments such as power generation, ships, aerospace, molds, and high-precision instruments. International tool grinding technology is a symbol of the level of industrialization in a country.
Development of PCD tool grinder
Foreign tool grinder systems have emerged to accommodate the processing of polyhedrons and curved parts. With the new development of the grinding machine compounding technology, on the basis of the tool grinding machine. The turning and milling center capable of milling processing was quickly produced. BT-150HG PCD tool grinder application, its processing efficiency is equivalent to two three-axis machine tools. And even can completely eliminate the investment of some large-scale automated production lines, greatly saving the space and working between different manufacturing units time and cost. The demand of the market has promoted the development of China's BT-150HG PCD tool grinder. At the CIMT99 exhibition, the domestic tool grinding machine was on the stage of the grinding machine market.
Tool grinding machines are used to machine end mills, ball end mills, step drills, reamers, forming cutters, deep hole drills, delta chisels, and bullhead grinders to sharpen the cutting edges and grooves of metal cutting tools. Generally, the outer circle, plane and complex shape of medium and small parts, the maximum grinding workpiece diameter is 250 mm.
Structural Features of BT-150HG PCD tool grinder
1. Special high-strength polymer bed, self-contained, stable structure, good rigidity, strong shock absorption, no special requirements for installation.
2. Finite element design, reasonable design of the five-axis structure, compact space, easy to operate, more effective stroke.
3. The main shaft is processed by high-speed dynamic balance and labyrinth seal. The spindle is water-cooled to effectively control the temperature rise.
4. Large workbench design, standard T-slot countertops, easy to install a variety of auxiliary fixtures. Effectively expand the scope of application, easy to face the processing of a variety of special tools.
5. Equipped with a 3D tool automatic measurement system, can automatically measure within a few seconds, start grinding.
6. Unique and ultra-high precision cutting oil cooling filter device, greatly improve the processing effect. Ensure the long-lasting cleaning of the grinding machine, and the quality of the tool.
The development of PCD tools makes more and more users use this tool for cutting work. The use of PCD tools to process aluminum workpieces has the advantages of long tool life and high metal removal rate. The disadvantages are that the tools are expensive and the processing cost is high. With the improvement of production technology, these shortcomings have been gradually improved, and now the application range of PCD tools is gradually expanding. But the proper use of PCD tools has become an important topic.The Use Method Of PCD ToolsThe correct application of PCD tools is a prerequisite for obtaining satisfactory machining results. Although the specific reasons for tool failure vary, they are usually caused by incorrect use of the object or method of use. When ordering a PCD tool, the user should correctly grasp the range of application of the tool. For example, when using PCD tools to process ferrous metal workpieces, since diamond easily reacts with the carbon elements in steel, it will cause PCD tools to wear quickly. Therefore, the PCBN tools are the correct choice for machining hardened steel.In general, in order to reduce cutting forces and prevent chip formation, PCD tools should use positive cutting angles. However, when processing high-silicon aluminum alloys, the back angle of the PCD cutting tool is preferably slightly smaller than that of the original hard alloy cutting tools to improve the cutting performance of the cutting edge of the PCD cutting tool on the high silicon aluminum alloy. The positive rake angle of a PCD tool should not too large, because the larger the tool rake angle, the lower the cutting edge strength.In other words, the smaller the rake angle of the PCD tool, the stronger the cutting edge. In order to increase the cutting edge strength as much as possible while keeping the tool at a positive cutting angle. When preparing the PCD cutting edge, the diamond tip does not need to process too much. For the PCD milling cutter, the cutting edge can slightly sharpen. In addition, making the cutting edge produce a certain axial inclination also helps to improve the PCD cutting edge cutting performance.
How to use the rivets correctly in CNC tool
The numerical control tool of the rivets is a very important part, if not when to use, it will be disqualified. Toppling over again, it is conceivable that how such small parts play a bigger role. In order to make everyone better operating, today, to talk about how to correctly use rivets, to prevent unnecessary loss.
Selection and maintenance of tension rivets
Modern machine tools have become faster, more powerful, and "smarter," producing complex parts with less input.
However, no matter how advanced the processing technology. And how well the equipment is maintained, eventually in the movement of mechanical parts. There will always be some traces of use. The pull rivets that this text states, it is to point to boring and milling kind of CNC machine tool main shaft and the pull tight element between tool handle. It can wear out and damage for a long time, but because it is very small. It can replace, also cheaper, so it is in the importance of processing not easy to cause people's attention. In order to make the machine tool can normal operation and timely maintenance. It should be a rivet and machine tool tensioning mechanism and standard handle and rivet matching knowledge. In addition, the operator of the machine tool, maintenance personnel should also have a pull rivet selection, maintenance, damage determination of common sense. At the same time, I also recommend you use SFX brand pull rivet, strict inspection, reliable quality, maintenance, and worry.
Selection of pull-rivets
Face various pull rivet, how to find the model specification that one needs?
It is best to choose according to your machine tool specifications to pull rivets. Most machine tool manufacturers will provide rivet drawing in the machine tool manual. It can also directly on the machine tool with the pull rivet measurement later determined.
Most pull rivets have 7 ~ 10 sizes and need to provide to the supplier when ordering. However, special attention should be paid to three main parts: the angle of the stud head, the distance from the datum level to this angle and the type of thread. All three dimensions are easy to measure.
Maintenance of tacks
Although pull rivets belong to consumables, easy to buy, they still need appropriate stock. In the reserve should avoid each other bump, scratch, and scratch, otherwise, it will affect the service life of pull rivets. For the tension rivet with the "O" seal ring, it should replace regularly the "O" ring. After pulling rivets are removed, they should thoroughly clean (not by spraying or other particle cleaning methods). A torque wrench should use to install the tacks. The appropriate torque can extend the service life of the tacks, and also ensure the consistency of the torque to ensure the safety of the machining process. Magnetic particle testing should carry out for tacks used in roughing processes so that cracks under the surface can be detected in a timely manner. In addition, a maintenance record shall be established, which shall include: who tested the puller, the content, and the result of the test, the time of completion, etc.
Manufacturers are using the ceramic bond diamond grinding wheel for grinding diamond tools.The ceramic bond diamond grinding wheel has the common characteristics of the diamond and ceramic bonds. Compared with ordinary corundum and silicon carbide grinding tools, it has a strong grinding force, lower grinding temperature and less wear. Can adapt to a variety of coolant action. The products grinded with the ceramic bond diamond wheel grinding tool not only have good shape, but also have high precision in grinding the parts. Abrasives have better self-sharpening, longer dressing intervals and easier dressing. Therefore, in some developed countries, ceramic bonded diamond grinding wheels are increasingly used, and the scope of use of this equipment is also becoming wider and wider.When using ceramic bonded diamond wheels for grinding, reasonable process parameters must be selected. Ceramic bonded diamond wheels grind single-crystal diamond, its grinding efficiency is higher than that of metal bonded wheels. The wear rate is very small, and the processing cost is low. When grinding PCD tools, the resin binder is soft and easily deformed during grinding, so PCD tools cannot be effectively ground. Due to the strong binding ability of the metal binder and the abrasive particles, the self-sharpening of the grinding tool is poor and the grinding efficiency is low. Moreover, metal bonded abrasive wheels can cause the most severe damage to the edges of PCD tools. Therefore, it is important for the grinding wheel to select the appropriate grinding parameters according to the product to be ground.Demian’s tool grinding machines have advanced technology and excellent equipment performance. They can be used to grind PCD tools and diamond tools with ceramic bonded diamond wheels. Users are welcome to come to buy.