2-908-8 Shinmarukohigashi Kawasaki-shi Nakahara-ku Kanagawa-ken 211-0004
JAPAN
Phone: +81-44-433-7171 Fax: +81-44-411-0201
PRECAUTIONS FOR USING DIAMOND AND cBN WHEELS
PRECAUTIONS FOR USING DIAMOND AND cBN WHEELS
Precautions for using diamond and cBN tools are the following. Please check.
MACHINE CONDITION
● A grinder should be rigid, and have a degree of high precision.
● Generally speaking, grinder chips are in μm units, and finished surfaces have a high dimensional accuracy, as well as extremely small irregularities.
● Therefore, if your grinder has the spindle center runout, vibration, or rattling, you can not get a good grinding result.
● Check and adjust your grinder before processing, if your machine has rattling, and so on.
GRINDING SPEED
● Grinding speed is indicated by the wheel’s peripheral velocity. The wheel’s peripheral velocity is indicated by the following numerical formula. PERIPHERAL VELOCITY﹦DIAMETER LENGTH (D) X π(3.14) X NUMBER OF AXIS ROTATIONS/sec.
● An unnecessary high-velocity of periphery generates early clogging and glazing, and it
causes a kind of vibration which adversely affects the finished surface.
● A less-than-necessary peripheral velocity will also result in shortening the lifespan of the wheels, so good grinding efficiency won’t be expected.
GRINDING DEPTH
● Excessive grinding depth shortens the lifespan of wheels to a high degree, and causes burn marks.
● Too shallow a depth also leads to clogging or glazing, which significantly reduces grinding efficiency. Spark out is recommended to be done in as minimal time as possible.
● To use the grinder, it is recommended that you follow a general grinding depth (outlined below.)
COOLANT
● Coolant is used for the purpose of lowering the grinding temperature, improving grinding performance, and making finished surfaces better.
● The properties that coolant requires are excellency of cooling performance and infiltration, not to affect the processing surface, good cleaning performance and liquidity, not to deteriorate for a long period of time, not to hurt skin, not to have stench, and so on.
● Grinding efficiency does not go down in an emulsion-type coolant mixed with soapy water. It is important to devise a way to pour water adequately on the grinding point. As for the cBN grinding stone, use of sulfur chloride grinding oil is best.。
RETURN TO ABOUT DIAMOND TOOLS
MACHINE CONDITION
● A grinder should be rigid, and have a degree of high precision.
● Generally speaking, grinder chips are in μm units, and finished surfaces have a high dimensional accuracy, as well as extremely small irregularities.
● Therefore, if your grinder has the spindle center runout, vibration, or rattling, you can not get a good grinding result.
● Check and adjust your grinder before processing, if your machine has rattling, and so on.
GRINDING SPEED
● Grinding speed is indicated by the wheel’s peripheral velocity. The wheel’s peripheral velocity is indicated by the following numerical formula. PERIPHERAL VELOCITY﹦DIAMETER LENGTH (D) X π(3.14) X NUMBER OF AXIS ROTATIONS/sec.
● An unnecessary high-velocity of periphery generates early clogging and glazing, and it
causes a kind of vibration which adversely affects the finished surface.
● A less-than-necessary peripheral velocity will also result in shortening the lifespan of the wheels, so good grinding efficiency won’t be expected.
GRINDING DEPTH
● Excessive grinding depth shortens the lifespan of wheels to a high degree, and causes burn marks.
● Too shallow a depth also leads to clogging or glazing, which significantly reduces grinding efficiency. Spark out is recommended to be done in as minimal time as possible.
● To use the grinder, it is recommended that you follow a general grinding depth (outlined below.)
| DISPLAYED GRAIN SIZE | ～１００ | １００ ～１４０ |
１４０ ～１７０ |
１７０ ～２４０ |
２４０ ～３２０ |
３２０～ |
| GRINDING DEPTH WITHIN （ｍｍ） |
０.０３ |
０.０２５ |
０.０２ |
０.０１５ |
０.０１０ |
０.００５ |
COOLANT
● Coolant is used for the purpose of lowering the grinding temperature, improving grinding performance, and making finished surfaces better.
● The properties that coolant requires are excellency of cooling performance and infiltration, not to affect the processing surface, good cleaning performance and liquidity, not to deteriorate for a long period of time, not to hurt skin, not to have stench, and so on.
● Grinding efficiency does not go down in an emulsion-type coolant mixed with soapy water. It is important to devise a way to pour water adequately on the grinding point. As for the cBN grinding stone, use of sulfur chloride grinding oil is best.。
RETURN TO ABOUT DIAMOND TOOLS
バナースペース
Oriental Diamond Tool Lab.Ltd.
2-908-8 Shinmarukohigashi Kawasaki-shi Nakahara-ku Kanagawa-ken 211-0004 JAPAN
Phone +81-44-433-7171
FAX +81-44-411-0201