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Title:
BEARING RACE COOLING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/040644
Kind Code:
A1
Abstract:
The invention is related to a race cooling system that lowers the temperature of bearing races to room temperature by cooling them with air in order to periodically measure and control bearing races that have been forged at an approximate temperature of 900°C during the forging production of the bearing race in a hot forging machine. Particularly in the race cooling system of the invention, air cooling of bearing races are carried out in order to periodically measure and control bearing races that have been forged at an approximate temperature of 900°C.

Inventors:
KAHRAMAN MEHMET (TR)
MIZRAK ALI (TR)
AGIRCAN UFUK OZGUR (TR)
DEMIREL DURMUS (TR)
Application Number:
TR2020/050719
Publication Date:
March 04, 2021
Filing Date:
August 18, 2020
Export Citation:
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Assignee:
ORTADOGU RULMAN SANAYI VE TICARET ANONIM SIRKETI (TR)
International Classes:
B21J1/06; B21K1/04; B21K29/00; C21D9/08; C21D9/40; F27D9/00
Domestic Patent References:
WO2017068841A12017-04-27
Foreign References:
DE4208485C11993-02-11
JPS54163706A1979-12-26
FR2120925A51972-08-18
KR20060104747A2006-10-09
Attorney, Agent or Firm:
CANKAYA PATENT MARKA VE DANISMANLIK LIMITED SIRKETI (TR)
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Claims:
CLAIMS

1- The invention is a bearing race cooling apparatus comprising,

- a cooling chamber (1) connected to the cooling chamber feet (8) that is positioned on the cooling chamber feet (8) into which the bearing race is fitted,

- a cooling chamber cover (3) that is attached to one side of the cooling chamber (1) that can open and close in the vertical direction, characterized by comprising

- an inner section cooling rod (2) that is positioned longitudinally at the middle portion of the cooling chamber (1),

- air openings (10) that enable air to be discharged and that are located on the cover (3) of the cooling chamber and the cooling chamber rod (2).

2 A bearing race cooling system according to claim 1 characterized by comprising a compressor air pipe (5) that enables pressurized air to be delivered to the cooling chamber (1) and that is connected from four sides to the cooling chamber (1),

3 A bearing race cooling system according to claim 2 characterized by comprising an air pipe (7) that is connected with the race cooling apparatus table (4).

4 A bearing race cooling system according to claim 3 characterized by comprising an air compressor (6) that generates the pressurized air that is required, and that is connected with the bearing race cooling apparatus table (4) by means of the air pipe (7).

5 A system according to any of the preceding claims, characterized by comprising an air valve (9) that can open and shut off the air that is delivered to the apparatus and that is positioned on the bearing race cooling apparatus table (4).

6- A system according to any of the preceding claims, characterized by comprising bearing race cooling chamber feet (8). 7- A system according to any of the preceding claims, characterized by comprising a race cooling apparatus table (4) sitting on the bearing race cooling chamber feet (8).

Description:
BEARING RACE COOLING SYSTEM

Technical Field

The invention is related to a bearing race cooling system that lowers the temperature of bearing races to room temperature by cooling them with air in order to periodically measure and control bearing races that have been forged at an approximate temperature of 900 °C during the forging production of the bearing race in a hot forging machine.

Prior Art In the prior art, the hot forged bearing race cooling process is carried out by placing the race into a water filled container and due to this reason, as the cooling of the hot forged bearing race is carried out in water, the process takes a longer time. Therefore the measurement controls of the races during hot forging production are time consuming and it is more difficult to determine the bearing races that have been formed problematically.

In the art several developments have been made on race cooling apparatuses.

In the Japanese patent document numbered JPS5619924A of the prior art an apparatus constructed in order to perform an effecting cooling process is mentioned. The hot rolled rod material is placed on a head such that it rotates around an axis. Afterwards the material that is heated is cooled with air around a ring.

In the patent document numbered US4822972A of the prior art, a system that cools a heated cylinder by rotating by means of the bearings attached on a housing, is mentioned. In the patent document numbered WO2018047859A1 of the prior art, a cooling structure of a bearing assembly, for example a cooling structure of a bearing placed inside a main shaft or in the main shaft of the press is mentioned. The acceleration of the bearing depending on heat causes an increase in pre-loading. Due to this reason, the acceleration of speed and sensitivity of the main shaft of the bearing needs to be minimized. As a method of suppressing the increase of temperature of a working shaft, the air that is compressed for cooling the shaft or the bearing, needs to be fed to the shaft or the bearing.

In the patent document numbered W02018181032A1 of the prior art a cooling system for a bearing device that has been placed in the shaft of the machine assembly is mentioned. The temperature increase of the device needs to be kept at a minimum in order to ensure safety of the processing precision of the press in a shaft device. However presses also need to be able to accelerate in order to increase processing efficiency. Therefore as the temperature of the bearing supporting the main shaft shall increase together with the acceleration of speed, the bearings need to be cooled down.

However in the prior art cooling systems cooling is performed by air, but cooling is carried out following the shaping process conducted during continuous rolling. In the race cooling system subject to the invention, air cooling of bearing races are carried out in order to periodically measure and control bearing races that have been forged at an approximate temperature of 900 °C.

Aims of the invention

The aim of this invention is to provide a bearing race cooling system which enables to control and measure the bearing races that have been hot forged during bearing race production, in shorter periods of time by cooling them in shorter periods of time.

Another aim of this invention is to provide a bearing race cooling system that enables to reduce defective bearing race production during the forging process a the abrasions that can be encountered in forging moulds can be determined rapidly.

Detailed Description of the Invention

The bearing race cooling system carried out in order to reach the aim of this invention has been illustrated in the attached figures.

In the drawings:

Figure 1: Perspective view of the bearing race cooling system.

Figure 2: Perspective view of the section in the bearing race cooling system, where the bearing race is cooled. The parts in the figures have each been numbered and the references of each number have been provided below.

1. Cooling chamber

2. Inner section cooling rod

3. Cooling chamber cover 4. Cooling apparatus table

5. Compressor air pipe

6. Compressor

7. Air pipe

8. Cooling chamber feet 9. Air valve

10. Air openings

The bearing race cooling apparatus subject to the invention comprises,

Cooling chamber feet (8), - A cooling chamber (1) connected to the cooling chamber feet (8) that is positioned on the cooling chamber feet (8) into which the bearing race is fitted,

- A cooling chamber cover (3) that is attached to one side of the cooling chamber (1) that can open and close vertically,

- An inner section cooling rod (2) that is positioned longitudinally at the middle portion of the cooling chamber (1),

- Air openings (10) that enable air to be discharged and that are located on the cover (3) of the cooling chamber and the cooling chamber rod (2),

- A compressor air pipe (5) that enables pressurized air to be delivered to the cooling chamber (1) and that is connected from four sides of the cooling chamber (1),

- A race cooling apparatus table (4) sitting on the bearing race cooling chamber feet (8),

- An air valve (9) that can open and shut off the air that is delivered to the bearing race cooling system and that is positioned on the bearing race cooling apparatus table (4),

- An air pipe (7) that is connected with the race cooling apparatus table (4),

- A compressor (6) connected to the compressor air pipe (5) that delivers the pressurized air to the cooling apparatus table (4).

In the developed bearing race cooling system, the pressurized air that is produced to be approximately 6 bars by the compressor (6) is delivered via the compressor air pipe (5) to the race cooling apparatus. The air delivered to the apparatus, is delivered to the system following the opening of the air valve (9) that s located on the cooling apparatus table (4).

The hot bearing race is placed inside the cooling chamber (1) that is fixed to the cooling apparatus table (4) by means of the cooling chamber feet (8) and the cooling chamber cover (3) is closed. Pressurized air is blown via the air openings (10) into the cooling chamber (1) by means of the air pipe (7). Thereby the hot bearing race is peripherally cooled. Moreover the outer section of the bearing race is also cooled by the air that is blown through the air openings (10) that are located on the inner section cooling rod (2).

Air openings (10) have been placed on the cooling chamber cover (3) in order to discharge the hot air created as a result of the blown hot air contacting with the bearing race during the cooling process of the hot bearing race. Thereby the air that is delivered into the cooling chamber (1) is discharged via the air openings (10) that are available on the cooling chamber cover (3).

The hot bearing race cooling process is completed when the race temperature is reduced down to room temperature, then the air valve (5) is closed and the cooling chamber cover (3) is opened and the bearing races are taken out and the necessary measurements are carried out.




 
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