# US 2012/0109551 A1 · Power consumption display unit for machine tool

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- Number: US 2012/0109551 A1
- Document ID: US20120109551A1
- Status: Published application
- Kind: A1
- Application number: 13/273,412
- Filed: 2011-10-14
- Published: 2012-05-03
- Earliest claimed: 2010-10-27
- Assignees: Jtekt Corporation
- Inventors: Koji HASEGAWA; Hirotaka SUGIURA; Takeshi KOJIMA
- Web page: https://patentgrep.com/patent/US20120109551A1

## CPC

- G05B 19/409: characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters (G05B19/408, G05B19/4093 take precedence)
- G05B 15/02: electric
- G05B 2219/23102: Quality parameter is low energy consumption of machine
- G05B 2219/23179: Warning display if heavy energy consuming programsteps are selected
- G05B 2219/31414: Calculate amount of production energy, waste and toxic release
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

A power consumption display unit for a machine tool includes: machining state determining means for determining, when a main power switch used to supply power to a machine tool is ON, whether the machine tool is in a machining state where a machining program is executed to machine a workpiece or in a non-machining state where the machining program is not executed; power consumption measuring means for measuring a power consumption of the machine tool during a period where the machine tool is determined to be in the non-machining state by the machining state determining means; and display means for displaying the power consumption measured by the power consumption measuring means.

## Claims

### Claim 1

A power consumption display unit for a machine tool that machines a workpiece according to a machining program, comprising:
machining state determining means for determining, when a main power switch used to supply power to the machine tool is ON, whether the machine tool is in a machining state where the machining program is executed to machine the workpiece or in a non-machining state where the machining program is not executed;
power consumption measuring means for measuring a power consumption of the machine tool during a period where the machine tool is determined to be in the non-machining state by the machining state determining means; and
display means for displaying the power consumption measured by the power consumption measuring means.

### Claim 2 (depends on 1)

The power consumption display unit for a machine tool according to claim 1, wherein the machine tool includes:
a first power-consuming element that consumes power in the machining state where the machining program is executed to machine the workpiece;
a second power-consuming element that consumes, when the machine tool is in the non-machining state, in order to keep the machine tool in an operation standby mode where the machining program is ready to be executed upon issuance of a command to execute the machining program; and
a third power-consuming element that consumes, when the machine tool is in the non-machining state, power independently of execution of the machining program,
wherein the machining state determining means determines, when the machine tool is in the non-machining state, whether the machine tool is in the operation standby mode where the first power-consuming element does not consume power and the second power-consuming element consumes power, or in an operation standby OFF mode where the first and second power-consuming elements do not consume power and the third power-consuming element consumes power; and
wherein the power consumption measuring means measures at least one of a power consumption in the operation standby mode and a power consumption in the operation standby OFF mode.

### Claim 3 (depends on 1)

The power consumption display unit for a machine tool according to claim 1, wherein:
the power consumption measuring means measures a power consumption of each of multiple power-consuming components of the machine tool in the non-machining state; and
the display means displays the power consumptions of the respective power-consuming components.

### Claim 4 (depends on 3)

The power consumption display unit for a machine tool according to claim 3, wherein the power-consuming components include at least one of a rotational drive shaft that rotatably supports a workpiece or a tool, a NC drive shaft that causes a relative movement between the workpiece and the tool, and a pump.