JP2000230633A - Oil feeding method for gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably supply oil to meshed gears to lubricate the gears rotating at high speed by providing a circumferential groove on the side surface of a gear, providing a plurality of hole and nozzle port opened from this hole to the tooth bottom of the gear on the bottom of the groove, and blowing oil air from the groove to the tooth bottom through the nozzle port. SOLUTION: Gears 11, 13 mounted on rotating shafts 10, 12 are mutually meshed. A circumferential groove 14 is provided on the side surface of the bear 11, and a plurality of a blind hole 15 and a nozzle port 16 opened from the blind hole 15 to the tooth bottom are provided on the bottom of the groove 14. An oil collar 17 is provided adjacently on the back of the gear 11, and a plurality of a hole 18 for introducing oil air and a nozzle 19 for blowing the oil air toward the side surface A of the external gear 11 through the holes 18 are provided in the inner part. The oil air (arrow C) is blown out from the oil collar 17 toward the side surface A of the gear 11 through the hole 18 and the nozzle 19, and the oil air blown into the groove 14 and guided to the blind hole 15 is blown out to the tooth bottom through the nozzle port 16 in cooperation with the centrifugal force of the gear 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of lubricating at least two gears meshing with each other.

[0002]

2. Description of the Related Art Recently, spindles of machine tools and the like have been required to operate at higher speeds, and gears for power transmission have also been increasing at the same time. And various lubrication methods that require a high lubrication method are expensive. Therefore, a method has been adopted in which inexpensive and easy air and lubricating oil are sprayed onto gears and the like as oil air. A conventional method of lubricating such a gear will be described with reference to FIG. 2. A lubricating oil and air fixed to a housing 3 and the like are introduced into a gear 2 attached to a rotating shaft 1 as shown by arrows a and b, respectively. A nozzle 5 attached to the block 4 extends to a position near the tooth tip of the gear 2 so that air and lubricating oil are blown from the nozzle 5 to the gear 2 as oil air.

[0003]

However, in the high-speed rotation of the gears, the lubrication is hindered by the oil-air lubrication described above due to the wind pressure around the gears generated with the rotation, and the gears cannot be sufficiently lubricated. There was a limit on gender.

An object of the present invention is to provide a method of lubricating a high-speed gear by using oil-air, which eliminates the above-mentioned disadvantage of insufficient lubrication of a conventional high-speed gear with oil-air. Is to do.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a circumferential groove on a side surface of a gear,
One side of at least two gears meshing with each other, provided with a plurality of holes at the bottom of the groove and a plurality of nozzles opening from the holes to the tooth bottoms of the gears, a rotating shaft for rotating the gears, and oil air inside. A plurality of holes to be introduced and oil air blown into the circumferential groove on the side surface of the gear from the same hole are provided adjacent to the gear having a nozzle provided at a position opposed to the circumferential groove of the gear. An oil collar, wherein oil air blown out from a nozzle of the oil collar is guided to a groove and a hole on a side surface of the gear, and then blown out to a tooth bottom of the gear through the nozzle.

According to this method, stable lubrication is performed for the gear rotating at high speed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. A gear 11 attached to the rotating shaft 10 and a gear 13 attached to the rotating shaft 12 mesh with each other, and at least one of the gear 11 and the gear 13 (in this embodiment, the gear 11) is provided. Circumferential grooves 14 on sides
The bottom of the groove 14 has a plurality of blind holes 15.
And a nozzle hole 16 opening from the same hole 15 to the tooth bottom. Behind the gear 11 (upward in the figure) is an oil collar 1
7 are mounted adjacent to each other, and a plurality of holes 18 for introducing oil air therein and an external gear 11 are provided through the holes 18.
The nozzle 19 which blows out toward the side A of is provided.

[0008] Since the configuration is as described above,
The oil air flows through the hole 1 of the oil collar 17 as shown by the arrow c.
8. Next, the oil air blows out from the nozzle 19 toward the side surface A of the gear 11 and is blown into the groove 14, and the oil air guided to the stop hole 15 is combined with the centrifugal force of the gear 11 from the nozzle 16 to the tooth bottom. It is blown out.

[0009]

According to the oil-air lubrication initially set forth, the lubrication is hindered, the gears cannot be lubricated sufficiently, and the disadvantage that the speed is limited is eliminated. Will be

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a method of lubricating a gear according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a conventional method of lubricating a gear.

[Explanation of symbols]

 10, 12 Rotary shaft 11, 13 Gear 14 Circumferential groove 15 Stop hole 16 Nozzle hole 17 Oil collar 18 Hole 19 Nozzle

Claims (1)

[Claims] At least two gears, which are provided with a circumferential groove on a side surface of the gear and provided with a plurality of holes at the bottom of the groove and a plurality of nozzles opening from the holes to the gear roots of the gear, are provided. , A rotary shaft for rotating the gear, a plurality of holes for introducing oil air therein, and a circumferential groove of the gear for blowing oil air into a circumferential groove on the side surface of the gear from the hole. A gear having a nozzle provided at a position facing the oil collar and an oil collar provided adjacent to the gear, and guiding oil air blown out from the nozzle of the oil collar to a groove and a hole on a side surface of the gear, and then through the nozzle, A method of lubricating a gear, wherein the oil is blown out to a tooth bottom.