can be calculated by the finite element method of stress magnitude different speeds to simulate the failure process and improve the design.
2013年7月31日星期三
Plane grinding machine
Brief introduction
Grinding machine with abrasive coated or embedded on the surface of the lap for polishing grinder. Mainly used in high-precision surface grinding work, external
cylindrical surface, conical surface, spherical surface and the other thread-surface.
The main purpose
Plane grinding machine is widely used in LED sapphire substrate, an optical glass wafer, quartz, silicon, various pieces, molds, light guide, light fittings and other
materials stick-sided grinding and polishing.
Works
Plane grinding machine for precision grinding and polishing equipment, by grinding, polishing materials placed on a flat grinding disc, grinding disc counterclockwise
rotation correction wheel drive workpiece rotation, gravity, pressure or otherwise put pressure on the workpiece, the workpiece and the grinding disc for Relative
operating friction, to achieve the purpose of polishing. Grinding action of the abrasive particles produced two sources, one from the constantly applied (often
referred to as free abrasive); Another way is to fix the abrasive particles in the grinding disc (often referred to as solid abrasives).
Abrasive grinding disc flatness is the benchmark, was supported by precision workpiece surface guarantee. In the process of grinding, the grinding disc will decrease
the flatness, mainly due to the external lines grinding disc at different speeds, causing inconsistent wear. Grinding disc requiring regular trimming plane. Trimmed in
two ways: one is the use of the reference plane electroplated diamond dressing wheel to shave, because electroplated diamond dressing wheel almost no wear, a higher
flatness.
2 is shaved by the trimming mechanism, the better the flatness can be obtained, this trimming same principle The principle and lathe, grinding disc rotation, a forward
and backward movement of the knife arbor driven by cutting to obtain a polishing plane.
The main types of mill disc mill, shaft grinding machines and a variety of special grinding machine. Grinding Machine Control System PLC as the control core, the text
display is interactive interface control mode. Interactive interface can equipment maintenance, operation, fault and other information dialogue with people; easy and
intuitive user interface, process control, simple operation. Comprehensive security reasons, misuse of non-normal state is invalid. Real-time monitoring, fault, error
alarm, easy maintenance grinding, is the use of coated or embedded in the lap pressure on the abrasive wheels particles and the workpiece through a lap under a certain
pressure relative movement of the processing surface finishing processing (eg cutting processing). Grinding can be used for processing of various metals and non-
metallic materials, the processing of the surface shape of a flat, cylindrical cylinders and conical surface, convex and concave spherical, thread, tooth surface and
the other type surface. Precision up to IT5 ~ 01, the surface roughness up Ra0.63 ~ 0.01 microns, are precision machining.
Six Advantages plane grinding machine
1, two plane grinding machine with variable speed control system, can easily adjust the various components suitable grinding polishing rate. Using electric - gas
proportional pressure control valve closed loop feedback, individually adjustable pressure device. Set slow down function on the plate, effectively prevent crackers,
broken parts.
2, through a time relay and a grinding counter processing requirements can be accurately set and control the grinding time and grinding laps. Adjustable working
pressure mode, to grind or lap time set will automatically shut down when the alarm for semi-automatic operation. By increasing the thickness of the grating form a
closed loop control, to set the thickness will stop automatically for online control of production.
3, double surface grinding machine with speed motor drive, power deceleration system configuration, soft start, soft stop, smooth operation.
4, through the upper and lower lapping plate, a sun gear, the planetary wheel is formed in the processing of the four directions, the polishing speed of movement
coordination, to both upper and lower surfaces of the efficient operation of the grind.
5, the lower plate can lift for easy loading and unloading of the workpiece. Pneumatic sun gear change to the device, precise control of both sides of the workpiece
grinding accuracy and speed.
6, random with a correction wheel, used to correct errors in parallel upper and lower platens
Grinding machine maintenance methods
Motor
1 use of the motor voltage is 380V, to ensure that the use of the normal voltage.
(2) to use the highest frequency of the motor is 50HZ, 50HZ use can not exceed.
3 motor current strength not exceeding 15A, if found not normal to promptly stop check.
4 after starting the motor starter switch, such that the motor does not start an instant reaction, immediately stop inspection, discharge after a fault before normal
use.
5, such that the motor has dry tone or high (exceeding 80 ℃ above), they should immediately stop check on discharge after a fault before normal use.
Gearbox
1 new gearbox when used in operation should be replaced after 300 hours of new oil, using 1500 hours required for each subsequent replacement of oil, in the course of
oil should regularly check the quality, if a little oil should be supplemented, if oil has deteriorated, aging, must be immediately replaced.
2 Gearbox should use a fixed brand, number of lubricants, must not allow the different brands, different numbers or different types of oil phase mixture.
3 in the oil change process, you should first internal gear box oil cleaned (blown clean with air gun oil inside), and then inject new oil.
4 During use, if found above the oil temperature exceeds 80 ℃, should stop to check, such as temperature decreases, replace the oil before it can be used normally.
5 Recommended oil: ISO.HD-460 or HD-320 lubricating oil.
6.2 days must be checked once fuel oil, gearbox oil for less timely additional oil (oil deep in the center of the oil money to the mirror).
7 gearbox filling hole is not blocked, we must play a role in breathing.
8 Gearbox working environment must be ventilated.
9 gearbox generally can not exceed the maximum speed rev / min.
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