JP5549846B2 - Cooling device for workpiece in grinding machine - Google Patents

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 apparatus, a method of spraying a cooling liquid on a grindstone and a work piece from a discharge port is performed. For example, it is possible to spray coolant 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. 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 main shaft of the grinding machine in consideration of the safety and operability of the operator.

The spraying of the coolant alone caused clogging of the grindstone, resulting in chatter and grinding stripes 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 the diamond due to the extra dressing has become a large burden on the economy and needs to be improved.

For example, during surface grinding, if the amount of coolant is increased and the cutting depth of the grindstone is increased, the workpiece will generate heat, the workpiece plate will deform, 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 productivity improvement.

  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 present invention is provided with a three-way joint in the coolant pipe, a valve capable of adjusting the air amount from the side intersecting with the straight coolant, and a compressed air adjusted to be lower than the fluid pressure of the coolant at the tip. The portion is fed through a tip nozzle for compressed air installed in the coolant flow path, and the coolant and compressed air are mixed in a gap between the three-way joint and the discharge port. Mixed coolant and compressed air discharged from the discharge port, momentum is well jetted put on the grinding surface of the surface and the workpiece in the grinding wheel, instantly prevent clogging, it is and those to enhance the cooling effect.

During machining of the grinding machine, while maintaining the safety and operability of the operator as before, the compressed air is mixed with the coolant 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.

The piping of the grinding machine of the coolant, arranged three-way joint 1, from the side of crossing the flow of the cooling liquid straight, ahead of the pressure reducing valve 3 and the compressed air on-off valve 4, includes a compressed air tip nozzle 2 The tip of the compressed air tip nozzle 2 is installed in the coolant flow path of the pipe. A coolant opening / closing valve 5 is provided between the three-way joint 1 of the pipe and the discharge port 6.
The amount of compressed air can be adjusted by the pressure reducing valve 3 and the open / close valve 4 for compressed air . The coolant opening / closing valve 5 can adjust the discharge amount of coolant mixed with 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, by adjusting the amount of compressed air from the compressed air tip nozzle 2 by the pressure reducing valve 3 and the compressed air opening / closing valve 4, the pressure sprayed from the discharge port 6 can be adjusted .

The pressure of the compressed air supplied is Ri by the pressure reducing valve 3, by adjusting lower than the fluid pressure of the cooling liquid, the stable Mixing Schemes in gap compressed air and the cooling liquid reaches the discharge opening 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 the tip of the compressed air adjusted to be lower than the fluid pressure of the coolant is introduced into the coolant channel from the side intersecting with the coolant that goes straight. A cooling device for a grinding machine, which is fed through an installed nozzle for compressed air, mixes the coolant and compressed air in the gap between the three-way joint and the discharge port, and sprays it onto the grinding surface of the grindstone and workpiece.

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