2016年10月8日星期六
The grinding wheel is used to increase the production efficiency
Wide wheel grinding
is also a kind of efficient grinding, is to increase the grinding width
to improve the grinding efficiency: - 'external grinding width is only
50mm, and wide grinding wheel external grinding wheel width up to 300mm.
Surface grinding wheel width up to 40mm, centerless grinding wide wheel
width up to 800-1000mm; in the cylindrical and cylindrical grinding
generally used in the cutting force cutting method, they are used in
addition to the heartless grinding method, but also through Grinding
wide grinding wheel grinding workpiece size accuracy up to 6, the
surface roughness up to 6 Ra0.06um.
2016年9月30日星期五
1. Grinding automotive parts - camshaft and crankshaft
The camshaft of automobile engine has a number of cams. The coarse grinding and fine grinding of the cam after hardening is the key process which affects the cam quality. Usually by the use of simulation-shaped grinding, the workpiece speed limit is limited, the workpiece is easy to produce grinding burns crack, the use of analog-shaped grinding, the cam surface contour curve wheel diameter affected by the size, it is difficult Make sure the cam profile is correct. Production practice shows that when the wheel diameter is large, the grinding out of the cam thin, when the wheel diameter is small, grinding the cam fat, only when the grinding wheel diameter close to or equal to the cam roller diameter (usually φ570mm) The profile error is close to zero, that is, the grinding cam surface contour curve close to the cam cam. In actual production, the wheel diameter used is generally from D600 (or 610) to D500, and the ideal wheel diameter (570) a lot of difference, so the total camshaft in most of the cam curve exceeded. To solve this problem, we rely on the grinding cam on the use of CBN grinding wheel grinding, CBN wheel diameter can be made D575, CBN abrasive layer thickness of 4 ~ 5mm, the grinding wheel diameter is the minimum D565, grinding diameter Although the scope of only 10mm, but the number of grinding parts is equivalent to dozens of ordinary wheel, not only to ensure the correct cam curve, but also does not produce grinding burns.
Such as Liton industrial automation company with CBN wheel grinding camshaft, the cost is reduced by 50%, the cam surface fatigue strength increased by 30%; Dongfeng Motor Company Xiangfan diesel engine plant with ceramic bonding agent CBN grinding wheel coarse grinding chilled cast iron camshaft , The cam grinding margin t = 4 ~ 5mm, υ sand = 60m / s, the workpiece speed n = 100r / min, υf = 0.1mm / s, using high-speed grinding fluid, CBN grinding wheel life is basically equivalent to 20 Corundum abrasive wheel.
The camshaft of automobile engine has a number of cams. The coarse grinding and fine grinding of the cam after hardening is the key process which affects the cam quality. Usually by the use of simulation-shaped grinding, the workpiece speed limit is limited, the workpiece is easy to produce grinding burns crack, the use of analog-shaped grinding, the cam surface contour curve wheel diameter affected by the size, it is difficult Make sure the cam profile is correct. Production practice shows that when the wheel diameter is large, the grinding out of the cam thin, when the wheel diameter is small, grinding the cam fat, only when the grinding wheel diameter close to or equal to the cam roller diameter (usually φ570mm) The profile error is close to zero, that is, the grinding cam surface contour curve close to the cam cam. In actual production, the wheel diameter used is generally from D600 (or 610) to D500, and the ideal wheel diameter (570) a lot of difference, so the total camshaft in most of the cam curve exceeded. To solve this problem, we rely on the grinding cam on the use of CBN grinding wheel grinding, CBN wheel diameter can be made D575, CBN abrasive layer thickness of 4 ~ 5mm, the grinding wheel diameter is the minimum D565, grinding diameter Although the scope of only 10mm, but the number of grinding parts is equivalent to dozens of ordinary wheel, not only to ensure the correct cam curve, but also does not produce grinding burns.
Such as Liton industrial automation company with CBN wheel grinding camshaft, the cost is reduced by 50%, the cam surface fatigue strength increased by 30%; Dongfeng Motor Company Xiangfan diesel engine plant with ceramic bonding agent CBN grinding wheel coarse grinding chilled cast iron camshaft , The cam grinding margin t = 4 ~ 5mm, υ sand = 60m / s, the workpiece speed n = 100r / min, υf = 0.1mm / s, using high-speed grinding fluid, CBN grinding wheel life is basically equivalent to 20 Corundum abrasive wheel.
2016年9月29日星期四
Applications of Diamond Grinding Wheel
Metal and non-metallic hard and brittle material is widely used in ordinary abrasive difficult to process low iron content, it is widely used in optical processing, sapphire, watches lenses, glasses, glass, precision ceramic, ferrite, automobile and motorcycle, beauty , aviation, military, cutting tool industry. Such as cemented carbide, alumina ceramic, optical glass, agate gem, semiconductor materials, stone and the like.
So far only ceramic bond diamond wheel can be trimmed on the machine. When using such a grinding wheel, worn too much and the feed rate is too low. Recently, however, there is a resin bonded grinding wheel groove, both with high material removal rate can be trimmed on the production equipment.
2016年9月28日星期三
Take minor trim
In order to reduce the dressing time, as if there is always want to choose a larger repair depth of the temptation. This is a very wrong idea. You must choose the most appropriate repair depth of the wheel dressing. Choose too much repair depth, will have a high cutting temperature, reducing the life of the dresser, but also useful to remove the wheel layer. The end result is that both the dresser and the grinding wheel are damaged and counterproductive. The best dressing quantity is the rule that can restore the grinding wheel geometry and produce good grinding edge after repairing several times.
Use a single-point dressing tool, should be 10-15o of the axis of the angle of contact with the grinding wheel diameter direction. This will allow the single-point dressing tool to produce a sharpened effect when rotated periodically. The trimming tool with multi-point contact does not need to be tilted at this angle. With the entire end face of the dressing tool being in contact with the surface of the grinding wheel.
The traverse speed is the speed at which the dressing tool passes through the surface of the grinding wheel during dressing. It requires the processing of surface roughness and metal cutting rate are played a key role. Lateral movement too slow will clog the wheel and damage the part's surface roughness and metal-cutting rate. Too slow the traverse speed can also cause the grinding wheel to vibrate and burn the part surface. Even faster horizontal movement speed can repair a good grinding wheel surface to improve the grinding performance of grinding wheel to increase the grinding efficiency and reduce part surface roughness.
In order to reduce the dressing time, as if there is always want to choose a larger repair depth of the temptation. This is a very wrong idea. You must choose the most appropriate repair depth of the wheel dressing. Choose too much repair depth, will have a high cutting temperature, reducing the life of the dresser, but also useful to remove the wheel layer. The end result is that both the dresser and the grinding wheel are damaged and counterproductive. The best dressing quantity is the rule that can restore the grinding wheel geometry and produce good grinding edge after repairing several times.
Use a single-point dressing tool, should be 10-15o of the axis of the angle of contact with the grinding wheel diameter direction. This will allow the single-point dressing tool to produce a sharpened effect when rotated periodically. The trimming tool with multi-point contact does not need to be tilted at this angle. With the entire end face of the dressing tool being in contact with the surface of the grinding wheel.
The traverse speed is the speed at which the dressing tool passes through the surface of the grinding wheel during dressing. It requires the processing of surface roughness and metal cutting rate are played a key role. Lateral movement too slow will clog the wheel and damage the part's surface roughness and metal-cutting rate. Too slow the traverse speed can also cause the grinding wheel to vibrate and burn the part surface. Even faster horizontal movement speed can repair a good grinding wheel surface to improve the grinding performance of grinding wheel to increase the grinding efficiency and reduce part surface roughness.
2016年9月27日星期二
End face of the grinding wheel - Repair
After forming,grinding wheel end there may be some shortcomings, so to repair, due to the different abrasives, repair methods will be different, so we should take a different approach for different abrasive, then, we have to introduce how three different abrasive grinding wheel is carried out to repair:
First, the type of abrasive corundum, and this wheel is usually not needed trimming, by self-sharpening wheel to fall off the sand, ongoing appropriate compensation it. That is up to the new wheel in the beginning, in order to balance a simple tidy up.
First, the type of abrasive corundum, and this wheel is usually not needed trimming, by self-sharpening wheel to fall off the sand, ongoing appropriate compensation it. That is up to the new wheel in the beginning, in order to balance a simple tidy up.
Second, diamond abrasives, such grinding wheel dressing wheel dressing pen can not use, but to rely on a little soft, sticky bigger things to be trimmed, for example, A3. Iron, stone and so on.
Third, CBN abrasives, which can refer to the second wheel dressing wheel dressing mode.
2016年9月23日星期五
14FF1 Duplex Grinding wheel bevel wheel_Diamond Grinding Wheel For Metal_Juchuang Abrasive Co.,Ltd.
14FF1 Duplex Grinding wheel bevel wheel_Diamond Grinding Wheel For Metal_Juchuang Abrasive Co.,Ltd.
M-tel: +86-15136439750
WhatsApp: +86-15136439750
Skype: jcabrasive@outlook.com
E-mail: zzabrasive@gmail.com
Address: Zhengzhou City, Henan province high tech Zone, Dawn Road, No. six
Drill modification Grinding Wheel HD
M-tel: +86-15136439750
WhatsApp: +86-15136439750
Skype: jcabrasive@outlook.com
E-mail: zzabrasive@gmail.com
Address: Zhengzhou City, Henan province high tech Zone, Dawn Road, No. six
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