TWI760274B - Smart machine tool - Google Patents

Abstract

An intelligent machine tool has: a frequency converter for generating a variable frequency AC voltage signal under the limit of a rated working current; a high-speed spindle for making a tool joint to generate a rotational speed according to the variable frequency AC voltage signal ; a tool combined with the tool joint for processing a workpiece according to the rotational speed; a microcontroller for enabling or disabling the frequency converter, and determining the rating according to a size specification of the tool working current, and transmit the information of the rated working current to the frequency converter; and a working area for carrying the workpiece and having a proximity detector; wherein, when the proximity detector detects that it and the tool When the distance is less than a preset value, it transmits an enable signal to the microcontroller to enable the inverter, and when the proximity detector detects that the distance between it and the tool is not less than the preset value, its Send a disable signal to the microcontroller to disable the inverter.

Description

Smart machine tool

The present invention relates to a machine tool, in particular to an intelligent machine tool.

General machine tools have a high-speed spindle and a frequency converter for driving the high-speed spindle. During operation, the operator will first combine a tool on the high-speed spindle, and then start the frequency converter to make the high-speed spindle drive the tool to rotate, thereby processing a workpiece.

However, the general machine tool can only operate under a fixed setting, for example, it can only be operated with a fixed size tool and a fixed rated working current. Therefore, when the working load becomes larger or smaller, the general tool The machine cannot efficiently process a workpiece. In addition, the general machine tool keeps the tool rotating after being started, regardless of whether the tool is machining a workpiece, thereby wasting a lot of unnecessary power.

To solve the above-mentioned problems, a novel machine tool control mechanism is urgently needed in the art.

The main purpose of the present invention is to disclose an intelligent machine tool, which can use a microcontroller to adaptively determine a rated working current of a frequency converter according to information of various sizes of different tools, so that a high-speed spindle can be matched with different The size of the tool and adaptively provide the corresponding working torque.

Another object of the present invention is to disclose an intelligent machine tool, which can use a proximity detector in a work area to detect a tool, so as to enable a frequency converter when the distance between the tool and the tool is less than a preset value , and disable the inverter when its distance from the tool is not less than the preset value, thereby saving unnecessary power consumption.

In order to achieve the aforementioned purpose, an intelligent machine tool is proposed, which has:

a frequency converter for generating a variable frequency AC voltage signal under the limit of a rated operating current;

a high-speed spindle for making a tool joint to generate a rotational speed according to the variable-frequency AC voltage signal;

a tool, which is combined with the tool joint for processing a workpiece according to the rotational speed;

a microcontroller for enabling or disabling the inverter, determining the rated working current according to a size specification of the tool, and transmitting the information of the rated working current to the inverter; and

a work area for carrying the workpiece and having a proximity detector;

Wherein, when the proximity detector detects that the distance between it and the tool is less than a preset value, it transmits an enable signal to the microcontroller to enable the inverter, and when the proximity detector detects When the distance between the tool and the tool is not less than the preset value, it transmits a disable signal to the microcontroller to disable the inverter.

In one embodiment, the intelligent machine tool further has a communication interface to receive the information of the size specification of the tool from an external device.

In one embodiment, the communication interface is a wired communication interface.

In one embodiment, the communication interface is a wireless communication interface.

In one embodiment, the tool is a sharpening tool.

In one embodiment, the tool is a drill.

In one embodiment, the tool is a milling cutter.

In order to enable your examiners to further understand the structure, features and purposes of the present invention, the accompanying drawings and detailed descriptions of preferred specific embodiments are as follows.

The principle of the intelligent machine tool of the present invention is:

(1) Using a microcontroller to adaptively determine a rated working current of a frequency converter according to the information of various sizes and specifications of different tools to provide appropriate working torque; and

(2) Using a proximity detector in a work area to detect a tool, so as to transmit an enable signal to the microcontroller to enable the inverter when the distance between the tool and the tool is less than a preset value, and when the When the distance from the tool is not less than the preset value, a disable signal is sent to the microcontroller to disable the inverter.

According to the above-mentioned principle, the present invention can adaptively determine an upper limit of the working current according to the size specifications of different tools to provide an appropriate working torque, and can turn off the inverter when the operator is not processing the workpiece to greatly reduce the power consumption. Save power consumption of machine tools.

Please refer to FIG. 1 , which shows a block diagram of an embodiment of the intelligent machine tool of the present invention. As shown in FIG. 1 , an intelligent machine tool 100 includes: an inverter 101 , a high-speed spindle 102 , a tool 103 , a microcontroller 104 , a communication interface 105 , a work area 106 and a proximity detector 107 .

The frequency converter 101 is used to generate a variable frequency AC voltage signal V _vf under the limit of a rated working current.

The high-speed spindle 102 is used to generate a rotational speed for a tool joint 102a according to the variable-frequency AC voltage signal V _vf .

The tool 103 is combined with the tool joint 102a to process a workpiece (not shown in the figure) in the work area 106 according to the rotational speed. Additionally, the tool 103 may be a sharpener, drill or milling cutter.

The microcontroller 104 is used for enabling or disabling the inverter 101, and determines the rated working current according to the information D _KFSP of a size specification of the tool 103, and transmits the information D _ROPC of the rated working current to the inverter device 101.

The work area 106 is used to carry the workpiece and has a proximity detector 107 .

In operation, the proximity detector 107 transmits a proximity signal S _APPRCH to the microcontroller 104 , wherein when the proximity detector 107 detects that its distance from the tool 103 is less than a predetermined value, it enables The proximity signal S _APPRCH is in an active state, so that an enable signal EN output by the microcontroller 104 is in an active state to enable the inverter 101; and when the proximity detector 107 detects that the distance between it and the tool 103 is not less than the At the default value, it makes the proximity signal S _APPRCH in an inactive state so that the enable signal EN output by the microcontroller 104 is in an inactive state to disable the inverter 101 .

The communication interface 105 is used for receiving the information D _KFS of the dimension specification of the tool 103 from an external device. In possible embodiments, the communication interface 105 may be a wired communication interface or a wireless communication interface to communicate directly with an external server, or via a local network with an external server, or via an Internet Communicate with an external server.

In addition, please refer to FIG. 2 , which is a schematic diagram illustrating a start-up operation of the intelligent power tool of FIG. 1 . As shown in FIG. 2 , when the proximity detector 107 detects that the distance between the proximity detector 107 and the tool 103 is smaller than the preset value, it drives the microcontroller 104 to enable the inverter 101 to enable the tool joint of the high-speed spindle 102 102a generates a rotational speed to drive the tool 103 to rotate, so as to perform a machining procedure on a workpiece 110 . In addition, it may be that the tool 103 moves toward the tool 103 or the tool 103 moves toward the working area 106 during the process of the tool 103 approaching the proximity detector 107 .

In addition, please refer to FIG. 3 , which shows a schematic diagram of a stop operation of the intelligent power tool of FIG. 1 . As shown in FIG. 3 , when the proximity detector 107 detects that the distance between the proximity detector 107 and the tool 103 is not less than the preset value, it drives the microcontroller 104 to disable the inverter 101 so that the tool of the high-speed spindle 102 is combined Part 102a stops rotating to save power. Additionally, during the process of moving the tool 103 away from the proximity detector 107 , it may move the work area 106 away from the tool 103 or the tool 103 may move away from the work area 106 .

By the design disclosed above, the present invention has the following advantages:

1. The intelligent machine tool of the present invention can use a microcontroller to adaptively determine a rated working current of a frequency converter according to the information of the size specifications of different tools, so that a high-speed spindle can be matched with tools of different sizes and adaptability provide the corresponding working torque.

2. The intelligent machine tool of the present invention can use a proximity detector in a work area to detect a tool, so as to enable a frequency converter when the distance between the tool and the tool is less than a preset value, and when the distance between the tool and the tool is less than a preset value The inverter is disabled when the tool distance is not less than the preset value, thereby saving unnecessary power consumption.

What is disclosed in this case is a preferred embodiment, and any partial changes or modifications that originate from the technical ideas of this case and are easily inferred by those who are familiar with the art are within the scope of the patent right of this case.

To sum up, regardless of the purpose, means and effect of this case, it shows that it is completely different from the conventional technology, and its first invention is suitable for practical use, and it does meet the patent requirements of the invention. Society is to pray for the best.

100: Intelligent machine tool 101: Inverter 102: High-speed spindle 102a: Tool joint 103: Knives 104: Microcontroller 105: Communication interface 106: Workspace 107: Proximity detector 110: Workpiece

FIG. 1 is a block diagram illustrating an embodiment of the intelligent machine tool of the present invention. FIG. 2 is a schematic diagram illustrating a start-up operation of the intelligent power tool of FIG. 1 . FIG. 3 is a schematic diagram illustrating a stop operation of the intelligent machine tool of FIG. 1 .

100: Intelligent machine tool

101: Inverter

102: High-speed spindle

102a: Tool joint

103: Knives

104: Microcontroller

105: Communication interface

106: Workspace

107: Proximity detector

Claims (7)

An intelligent machine tool, which has: a frequency converter for generating a variable frequency AC voltage signal under the limit of a rated operating current; a high-speed spindle for making a tool joint to generate a rotational speed according to the variable-frequency AC voltage signal; a tool, which is combined with the tool joint for processing a workpiece according to the rotational speed; a microcontroller for enabling or disabling the inverter, determining the rated working current according to a size specification of the tool, and transmitting the information of the rated working current to the inverter; and a work area for carrying the workpiece and having a proximity detector; Wherein, when the proximity detector detects that the distance between it and the tool is less than a preset value, it transmits an enabling signal to the microcontroller to enable the inverter, and when the proximity detector detects When the distance between the tool and the tool is not less than the preset value, it transmits a disable signal to the microcontroller to disable the inverter. The intelligent machine tool as described in item 1 of the claimed scope further has a communication interface to receive the information of the size specification of the tool from an external device. The intelligent machine tool as described in claim 2, wherein the communication interface is a wired communication interface. The intelligent machine tool as described in claim 2, wherein the communication interface is a wireless communication interface. The intelligent machine tool as described in item 1 of the patent application scope, wherein the tool is a sharpening tool. The intelligent machine tool as described in item 1 of the scope of the application, wherein the cutter is a drill. The intelligent machine tool as described in item 1 of the scope of the application, wherein the cutter is a milling cutter.

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