TEMPERATURE CONTROL APPARATUS OF WORKING MACHINE

• US 20100319903A1
• Filed: 06/23/2010
• Published: 12/23/2010
• Est. Priority Date: 06/23/2009
• Status: Active Grant

• Current Assignee: DMG Mori Seiki Co., Ltd. (Dmg Mori Co., Ltd.)
• Original Assignee: MORI Seiki Company Limited
• Inventors: Sugimoto, Yoshiaki, Hoshi, Takashi, Yoshioka, Kiyoshi, Yamada, Soichiro
• Granted Patent: US 9,004,991 B2
• Time in Patent Office: Days
• US Class Current: 165/287
• CPC Class Codes: B23Q 11/148 by controlling the air temperature
• CPC Class Codes: G05D 23/1931 to control the temperature of one space
• CPC Class Codes: G05D 23/2039 using mechanical means

Abstract

Provided is a temperature control apparatus of a working machine that is inexpensive, energy-saving and capable of eliminating the temperature difference between a temperature in a room in which the working machine is installed and a temperature of a working area.

Whether an average value T5 is higher or lower than both a target temperature T1 in the working area and an air temperature T2 in the room is checked and, if the result is YES, the routine proceeds to step S8 for driving a cylinder 175 to open a cover 173 and open a opening for working 172. Then, internal air in a working area A is replaced with external air surrounding a numerically controlled lathe 1 and the temperature in the working area approaches the air temperature T2 in the room. If the result is NO, the cylinder 175 is driven to close the cover 173 and close the opening for working 172. Then, replacement of the internal air in the working area A with the external air surrounding the numerically controlled lathe 1 is ended and the operation of the temperature control apparatus is ended.

Claims

1. A temperature control apparatus of a working machine including ventilating means for replacing internal air in the working area with external air surrounding the working machine between the working area inside the working machine and the exterior of the working machine, comprising:

a working area temperature sensor that detects a temperature of the working area;

an external air temperature sensor that detects an external temperature surrounding the working machine;

a ventilating means drive unit that drives the ventilating means; and

a ventilating means control unit that compares the temperature in the working area, which is detected with the processing area temperature sensor, the external temperature surrounding the working machine, which is detected with the external air temperature sensor, and a pre-set target temperature in the working area and, in accordance with a result of the comparison, outputs a signal for driving or stopping the ventilating means to the ventilating means drive unit when the working machine is not being operated.

2. The temperature control apparatus of a working machine according to claim 1,

wherein the ventilating means control unit outputs a signal for driving the ventilating means to the ventilating means drive unit when the temperature in the working area becomes higher than both the external temperature surrounding the working machine and the target temperature in the working area.

3. The temperature control apparatus of a working machine according to claim 1,

wherein the ventilating means control unit outputs a signal for driving the ventilating means to the ventilating means drive unit when the temperature in the working area becomes lower than both the external temperature surrounding the working machine and the target temperature in the working area.

4. The temperature control apparatus of a working machine according to claim 1,

wherein the ventilating means control unit outputs a signal for stopping the ventilating means to the ventilating means drive unit when the temperature in the working area becomes equal to the external temperature surrounding the working machine.

5. The temperature control apparatus of a working machine according to claim 1,

wherein the ventilating means control unit outputs a signal for stopping the ventilating means to the ventilating means drive unit when the temperature in the working area becomes a value between the external temperature surrounding the processing machine and the target temperature.

6. The temperature control apparatus of a working machine according to claim 1,

wherein the temperature in the working area that is detected with the working area temperature sensor is an air temperature in the working area.

7. The temperature control apparatus of a working machine according to claim 1,

wherein the temperature in the working area that is detected with the working area temperature sensor is a main structure temperature of the working machine.

8. The temperature control apparatus of a working machine according to claim 1,

wherein the external temperature surrounding the working machine that is detected with the external air temperature sensor is an air temperature in the room in which the working machine is installed.

9. The temperature control apparatus of a working machine according to claim 1,

wherein air replacement performed by the ventilating means is performed by the opening and closing of a cover that covers at least a part of the working area.

10. The temperature control apparatus of a working machine according to claim 1,

wherein the ventilating means is a fan provided in the working machine.

11. The temperature control apparatus of a working machine according to claim 1,

wherein the ventilating means control unit outputs the signal only during a specific time period of a day.