JP2011083885A - Cooling device for workpiece in grinder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device for improving productivity and accuracy during processing by suppressing heat generation during the processing while valuing safety without impairing working efficiency in grinding processing. <P>SOLUTION: A three-way joint 1 is formed on a pipe for cooling liquid in a grinder. A valve 4 for supplying compressed air and a nozzle 2 are provided on the side which intersects with flow of the cooling liquid flowing straight. An amount of the compressed air, which is adjusted to have a pressure lower than fluid pressure of the cooling liquid by a pressure reducing valve 3, can be adjusted by the valve 4. The cooling liquid and the air are mixed together in a gap leading to a discharge port 6, and are sprayed to a grinding surface of a workpiece 7 and a grinding stone 8 from the discharge port 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a cooling device that minimizes clogging of a grindstone during processing by a grinding machine and suppresses heat generation of a workpiece.

  In a conventional grinding machine cooling device, a method of spraying a coolant on a grindstone and a work piece from a discharge port is performed. For example, it is possible to spray grinding fluid from the discharge port and spray compressed air from a nozzle provided separately, but the direction of the compressed air can be determined even if a dedicated holder is attached, safety and operation There are many problems with sex and it is not done in reality. In the grinding machine processing, it is difficult to provide such a device around the grindstone cover and the spindle in consideration of the safety and operability of the operator.

  Only by spraying the grinding fluid, the grinding wheel was clogged, and chattering and grinding stripes were formed on the finished surface of the workpiece. In order to prevent this, it is necessary to dress the grindstone surface frequently and regenerate the cutting blade on the grindstone surface. The consumption of the grindstone and diamond due to the extra dressing has become a large burden economically and has to be improved.

  For example, during surface grinding, if the amount of grinding fluid is increased and the cutting depth of the grindstone is increased, the workpiece will generate heat, the workpiece plate will be deformed, and the flatness accuracy will be significantly reduced. End up. In grinding with the highest priority on accuracy, heat generated during machining has been a barrier to improving productivity.

  In extremely dangerous grinding operations, the heat generation of the workpiece is suppressed, the accuracy and finish of the workpiece are maintained, and productivity is improved without impairing the safety and operability of the operator. Develop a simple cooling device that has a low economic burden.

  The grinding fluid piping is equipped with a three-way joint, and a valve that can adjust the air volume is arranged from the side that intersects the coolant that goes straight, and compressed air that is lower than the fluid pressure of the coolant is sent to The grinding fluid and air are mixed in the gap leading to the discharge port. The discharged cooling liquid was sprayed vigorously on the surface of the grindstone and the ground surface of the workpiece, thereby preventing clogging instantly and increasing the cooling effect.

  When processing a grinding machine, while maintaining the safety and operability of the operator as before, the compressed air is mixed with the grinding fluid and sprayed onto the grinding surface of the grindstone and work piece to generate heat from the work piece. Suppressed and reduced clogging of the grindstone.

  In particular, in flat plate grinding, the warpage of the plate due to heat generation can be reduced as much as possible to increase the depth of cut, and productivity has been significantly improved.

  When grinding a flat plate with a large area, it is possible to increase the depth of cut in anticipation of the wear amount of the grindstone at both ends when performing continuous traverse processing. It became possible to use it, and the consumption of the grindstone was reduced, which had a very large economic effect.

  Since clogging and crushing of the grindstone were reduced, the number of grindstone dressings that were normally performed was reduced, and the consumption of the grindstone and diamond was reduced, resulting in an economic effect.

  Since clogging and crushing of the grindstone were reduced, there was no chatter or grinding stripes even when the number of dressing operations was reduced, and the finished surface of the workpiece was improved.

These are explanatory drawings at the time of using this apparatus for a surface grinder.

A three-way joint 1 is arranged in the grinding fluid piping of the grinding machine, and a nozzle 2 is provided at the tip of the pressure reducing valve 3 and the valve 4 from the side intersecting with the flow of the grinding fluid that goes straight.
The amount of compressed air is adjusted by the valve 4. The valve 5 is intended to open and close the coolant and compressed air.

  In the gap between the three-way joint 1 and the discharge port 6, a mixture of coolant and compressed air is sprayed from the discharge port 6 onto the grinding surface of the workpiece 7 and the grindstone 8. Further, the pressure sprayed from the discharge port 6 can be adjusted by adjusting the amount of compressed air.

  The pressure of the compressed air to be supplied is adjusted to be lower than the fluid pressure of the cooling liquid by the pressure reducing valve 3, so that the cooling liquid and the air are stably mixed in the gap reaching the discharge port 6.

DESCRIPTION OF SYMBOLS 1 Three-way joint 2 Tip nozzle for compressed air 3 Pressure reducing valve 4 Open / close valve for compressed air 5 Open / close valve for coolant 6 Discharge port 7 Workpiece 8 Grinding stone

Claims (1)

  The coolant pipe of the workpiece attached to the grinding machine is equipped with a three-way joint, and compressed air adjusted to be lower than the fluid pressure of the coolant is sent through the nozzle from the side intersecting with the coolant that goes straight, A cooling device for a grinding machine that mixes coolant and air in the gap leading to the discharge port and sprays it onto the grinding surface of the grinding wheel and workpiece.

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