2013年8月30日星期五

Automatic sizing study eating knife grinding tools to create an improved

Automatic sizing study eating knife grinding tool to create improved. This tool is based on the processing of automobile cylinder manual feed into the grinding tool. The test proved  cutter wheels . It solved my factory parts abrasive machining a product problem. This product will become the key once, and its diameter of 50 mm grinding length is 500, and the need to Kenko 8-9, taper length 40 mm, not more than 0.04 mm. After the success of this tool to study the production has brought great  diamond grinding , and to ensure the completion of tasks. However, the grinding, the workpiece surface scratches will appear further research to find out later we scratch the main  Cutting wheel  the low number of revolutions, and is hand oiler for kerosene and kerosene and did not play the role of washing and cooling; Whetstone powder with clogging, resulting workpiece scratches. Accordingly, we will increase the number of revolutions, kerosene supplied with a pump, so the ground powder was washed away, while the humidity is also correspondingly reduced grinding. By this method of testing, substantially overcome scratch defects, and to processing requirements.

Flexible grinding tool grinding valves on clover

Clover valve grinding process, we use a flexible grinding tools, and achieved good results. This reed flexible grinding tools in clover, shaft and 'Ning Kong cooperation, overcoming We use a latex tube, with a manual force caused by the uneven due to the shortcomings of  grinding tool  out of Seoul where the line is very well, to ensure the quality and improve the grinding efficiency. Seoul where the line in the final polishing, set in labor 5.5 for slalom and down movement, and further eliminate the shortcomings of  diamond grinding  uneven force, so that good quality research out of the workpiece, ensuring at 190 kg / cm. High pressure tightness tool & cutter  tools on clover valve grinding, we use a flexible grinding tools, and achieved good results. This flexible grinding tools reed valve shaft with the hole in the clover cooperation, to overcome the original instruments due to uneven force caused by manual ills, research out of Seoul where the line is very good, to ensure quality, improve the grinding efficiency .

Research method or a wet method in research, high-precision surface grinding

Regardless of the method or the wet-grind research method, plane precision grinding, grinder with a plate or the processing of the plane are convex, it is difficult to achieve the desired flatness requirements, the following reasons: (1) with flat  cutter wheels  machining plane, will bring the strength of the hand of a regular two parts mill flatness error increases, the plane was polished convex shape. (2) hand  grinding tool  heat transfer caused by the impact of convex result. There are two general ways grind, grind the workpiece in one hand is on grinding tools grinding, two hand-held grinding tool grinding workpieces. Both methods will almost t Cutting wheel  was ground directly to the outer edge of the workpiece, so that this part of the thermal expansion worn away, when the temperature returns to normal, irrigation, knife portion below the middle of the workpiece is ground, so the resulting convex shape.

Polishing machine of great importance to the various industries

Polishing machine of great importance to the various industries, especially the needs of the largest semiconductor polishing, polished products, with wear-resistant, anti-scratch and other characteristics, the characteristics of the communications  cup wheels  in the phone appearance requirements of the most important, the current high-yu precision of the mass production model, the quality can meet the domestic first-tier requirements and provide customized services semiconductor  grinding tool . Gao Yu Precision Company, now mass production equipment, can be polished to a super mirror plane that will scratch the wafer back into the mirror degree, from  diamond grinding  products, see their images reflected, called super mirror . Gao Yu Precision Company Customized production models have a standard flat-screen precision grinding and polishing machine, pneumatic plane precision grinding and polishing machines, double-precision grinding and polishing machines, in order to double-precision grinding and polishing machine, for example, suitable for mass production with high precision operation.

Research into the middle of dense disk or other abrasive emery

Grinding, the workpiece and the research into the middle of dense disk or other abrasive emery after  cutter wheels  by Emery, the workpiece surface rupture, when the grinding disc and the workpiece relative motion, due to the irregular and its abrasive grinding disc and  grinding tool  surface of the rolling surface of the workpiece and grinding broken fragments of fragments created by "push it away", so to repeat, and  Surface grinding  so that the surface became smooth and sophisticated plane. Whether to use the polishing slurry according to the working fluid, can be divided into dry grinding and wet grinding. Wet grinding method of processing capacity, a Yin is rough, wet grinding to get the crepe-like glossy dark. Dry grinding method of processing a small amount, usually finishing mill obtained in the bright mirror.

Vibratory finishing grinding has been widely applied

Vibratory finishing grinding has been widely used in various parts deburring, rounding and finishing. grinding tool  percentage of processing of the workpiece, the grinding block and a liquid medium, into a shaped container, the container at a specific  Cutting wheel  and frequency of vibration, the workpiece and the grinding block it by a certain trajectory. During the movement, since the quality of the workpiece and the grinding block, differences in the shape and location, forcing the module to the workpiece friction, rolling and trace grinding, enabling the workpiece deburring, chamfering, and surface finishing.

RESEARCH abrading tool is a tool of the workpiece, is also the carrier of the abrasive

RESEARCH abrading tool is a tool of the workpiece, is also the carrier of the abrasive, hardness should be less than the hardness of the workpiece, has a certain wear resistance, commonly made ​​of gray cast iron. Wet lap metallurgical research  cup wheels  based ferrite; dry  tool & cutter  lap places of uniform and fine pearlitic matrix. Ground threads and small parts of complex shape, the commonly used mild steel lap. Grinding holes and soft metal material, mostly made ​​of brass, copper lap. Should have  centerless grinding  stiffness lap, the working surface to have a high geometric precision. Lap during the grinding process has also been cutting and wear, such as operating properly, its accuracy can be improved, so that the machining accuracy can be higher than the lap of the original accuracy.

2013年8月29日星期四

Grain size, shape and distribution of

Mainly used in precision and high hardness materials and high surface quality requirements of the machining  Diamond blade . With a variety of new materials as well as the emergence and widespread application of scientific and technological development on the part  cutting tools  and higher quality requirements, grinding applications is constantly expanding. Many areas of traditional grinding methods have been eliminated, the number of grinding machine tools reached about 60% of the total. Grain size, shape and  grinding wheel  of these characteristics in grinding plays an important role. However, in the processing of ductile metals, often there will be a sharp wheel clogging and passivation, resulting in wheel can no longer continue to use, to prevent this from happening is necessary to study the blocking mechanism and process of grinding wheel, and then find a solution.

Constantly changing state of grinding wheel face

The grinding process, because the wear of wheel itself, constantly changing state of wheel face. As the grinding time, the grinding wheel cutting capacity decreased, various grinding defects continue to appear, the grinding process can not be continued. At  abrasive grinding , you must trim wheel, grinding back to normal state. Between the two dressing grinding wheel grinding time is called the real life of the wheel. Affecting the life of the grinding wheel grinding the important factorsDiamond blade  for forming grinding particularly important.
Determination wheel life:
Generally worn under the wheel face various phenomena arising through observation and tests carried out wheel wear  Synthetic diamond  arising after grinding are: self-excited vibration generated during grinding, the surface appears regeneration chatter; grinding noise increases; surface grinding burn occurs; grinding force a sharp increase or decrease; precision grinding down; grinding surface roughness increases.

Wheel balancing test is to check the uniformity of the organization to help round

Wheel during use due to the large centrifugal force, if the fly will produce casualties, so in the process of installation and use  grinding wheel  to comply with the safe use of technology. Wheel balancing test is to check the wheels to help organize  Abrasive grinding wheel  and correctness of the means of geometry, is crucial to ensure the quality of the user grinding. Thus, the inspector should concentrate strictly according to the standard checks, whose operation is performed according to the rules.

Reduce vibration and avoid wheel trim marks left on the surface

Dressing the wheel, the effectively reduce vibration and avoid dressing the wheel marks left on the surface, collision and damage dressing tools, is critical. This means that the wheel  polycrystalline diamond  be maintained, which is the structural characteristics of the wheel. Determined. Density unevenness and the quality of the wheel geometry, will affect the inherent balance of a grinding wheel. Therefore, a high-quality grinding wheel selection is very important. If it is a high quality wheel, just proper installation that is able to maintain a good balance wheel. The factory in accordance with the manufacturer's instructions  abrasive grinding , grinding wheel is marked with an up arrow, which indicates that the coarse grinding wheel  Synthetic diamond  after the end position. The user can then noted in arrows, note wheel dressing to reach homeostasis. Coolant filling evenly, and sometimes can also help to maintain a balance wheel.
In order to prevent vibration as much as possible, the operator must make the dressing tool firmly clamped in the clamp seat and leave the minimum amount of overhang, the only way to make the dressing tool strong enough rigidity. If the diamond dressing tool clamping process is not strong, it will inevitably cause vibration, resulting in serious noise, so that parts of the surface to produce tiny ripples, causing parts of the surface strain and dressing tools cause some damage.

Entire wheel surface or constantly filling the coolant to diamond dressing tools

Appropriate use of the cooling fluid, to accelerate the speed and improve trim dressing efficiency. According to experience, the choice of one 3/8 inch diameter cooling fluid, can be  cutting tools  a lot of heat on the dresser, extending the life of the dresser. When the diamond  grinding wheel  dressing tools through when installing a coolant nozzle, fill the wheel surface, or to continue to raise the coolant  Abrasive grinding wheel  tools. When the dressing tool and the wheel contact start trimming, never allow trimming tools from coolant exit. Otherwise it would diamond dressing tools, hot and cold extreme temperature changes, cracks or broken.
Using a filter for precision filtration of the cooling liquid, to avoid dirt or chips in multiple cycles of the coolant. Contaminated coolant to the grinding wheel wear out quickly, increasing the number of wheel dressing. Only in dry grinding, grinding wheel to take a dry dressing fishes. Every day before work, turn off the coolant, let wheel idle for several minutes. This prevents cracking wheel.

In addition to choosing the most appropriate repair depth on the grinding wheel dressing

To reduce repair time, as if there is always a desire to select bigger depth repair except temptation. This is a very wrong idea. Must choose the most appropriate repair except for trimming depth on the wheel. In addition to the depth of the repair options too, will produce high cutting temperature, reducing the life of the trimmer, but also will be useful wheel layer removed. The end result is that both the dresser and wheel damage, counterproductive. The optimum amount of  Diamond blade  repair addition, both the geometry of the wheel recovery, but also just  polycrystalline diamond  blade as a criterion. Use single point dressing tools should be 10-15o tilt axis line direction angular contact wheel diameter. This will enable a single point dressing tool on a regular rotation,  grinding wheel  role. A multi-point contact of the dressing tool without tilt angle. Changed the entire face with a dressing tool and the wheel surface.
Lateral movement speed by dressing tool in shaping the wheel surface speed. It required surface roughness of machined parts and metal removal rates have played a key role. Lateral movement is too slow, it will block grinding, damage parts of the surface roughness and metal removal rates. Slow lateral movement speed can also cause wheel vibration and burn parts of the surface. Even faster speed of lateral movement of a good dressing wheel surface can improve the performance of grinding wheel, to increase the grinding efficiency and lower parts of the surface roughness.

Including shaping and sharpening wheel dressing

Included in the shaping and sharpening wheel dressing before, to ensure spindle bearings in a certain temperature is very important. This prevents damage to the part geometry and wheel dressing tools and non-normal wear and tear. For the dressing with the tools must be handled carefully because it is generally hard, wear-resistant diamond but very brittle material, and due to a minor collision, the force caused by tiny cracks and broken are very sensitive.
Because  Synthetic diamond  is itself a tool, to be kept very sharp. Use a blunt tool to trim the dressing wheel surface, will make wheel blunt. In order to maintain a high quality and sharp diamond dressing tools, at regular intervals, you need 1/8 enclosure  cutting tools  point or dressing tool with a conical tip. According to trim the number of rotations decide, based on  grinding wheel , at least once every rotation. For the chisel head and molding dressing tools, which normally takes before they blunt 180 ° to rotate once. Most of the parts and cylindrical grinding wheel is placed in a horizontal line. The highest point of the cylindrical part and the highest point is called cylindrical grinding wheel parts / wheel contact point diamond dressing tools should be placed as close to the part / wheel contact point wheel dressing. For internal grinder with grinding wheels, diamond dressing tools will be close to the highest point of cylindrical grinding wheel (ie grinding holes Parts / wheel contact point) to be trimmed, which is more important.

How to better wheel dressing

With the grinding process for grinding, become dull, so in the course of the repair to be performed continuously, the wheel again becomes sharp. Here's a how to better dressing the grinding wheel to keep it higher efficiency and quality.
Dressing is one of the superabrasive grains abrasive grinding wheel sharp process. In this process, the need to remove the binding between the agent and the abrasive grinding wheel blunt abrasive grains having strong grinding performance bond  cubic boron nitride  wheel, the formation of a sharp cutting edge. Sharpening wheel surface must also be from the pores to remove tiny materials to prevent acts on the wheel on the grinding force increases, the wheel on the grinding force increases, will cause  abrasive grinding  and cause parts of the surface burns. Without  grinding wheel , even the best wheel it is impossible to obtain a high quality machined parts and size consistency. In fact, when you invest in the quality of the grinding wheel, grinding in order to obtain high performance, well trimmed, it is very important that they can be said plastic wheel part of the preparation, it is no ordinary wheel dressing simultaneously. For the grinding wheel, the two processes is carried out separately, the first grinding wheel shaping. In the use of superabrasive grinding wheel, the shaping is carried out using the shaping tool or wheel, sharpening often use a ceramic binder dressing stick, completed in shaping the grinding wheel dressing process.

Learn tungsten steel grinding wheel

In our understanding of tungsten steel grinding wheel, we must first understand the performance of tungsten steel, we can meet the right choice tungsten steel grinding wheel  polycrystalline diamond  characteristics. As long as the people who work in this industry are aware, tungsten steel in the metal material is an alloy compared to  grinding wheel , such as tungsten alloy and other metal equivalent increase harden, also known as: Hard alloys. Gold is also a difficult run-in. Therefore, according to this characteristic, high hardness abrasive should be selected: diamond grinding wheel effect will be obvious.