KR101562473B1 - A system for controlling processing mode of spindle device for a machine tool and the spindle device compring the system - Google Patents

Abstract

The present invention relates to a system for controlling the process mode of a spindle device for a machine tool and a spindle device including the same. According to an embodiment of the present invention, the system for controlling the process mode of a spindle device for a machine tool comprises: a foreign substance detection sensor; a command notifying part; a process mode setting part; a logic part; a pressure detection sensor; a process mode reset part; and a process mode change part. The foreign substance detection sensor detects whether an interference object exists on a movement passage of the spindle. The command notifying part commands the spindle to return to its original position when an interference object is detected by the foreign detection sensor and notifies the operator that an interference object has been detected. The process mode setting part sets a process mode of the spindle. The logic part determines whether a tool mounted on the spindle is suitable for the process mode. The pressure detection sensor calculates the pressure generated when the tool mounted on the spindle is in contact with a processed material in accordance with the process mode. The process mode reset part controls a process front end engineering design (FEED) of the spindle in the process mode based on the pressure value measured through the pressure detection sensor before performing a process. The process mode change part changes the detailed setting of the process mode based on the pressure value measured by the pressure detection sensor while performing the process.

Description

TECHNICAL FIELD The present invention relates to a machining mode control system for a spindle device for a machine tool and a spindle device for a machine tool,

The present invention relates to a machining mode control system for a spindle apparatus for a machine tool and a spindle apparatus for a machine tool including the same.

A conventional spindle device for a machine tool is configured such that a user sets a machining mode and the position and movement of the spindle are determined according to the set mode.

However, in the prior art, there is no special stabilizing device for coping with the occurrence of an unexpected situation such as movement, machining, inter-machining interference of the spindle and breakage of the tool. In particular, if the user does not verify the program in error, the spindle may be damaged as well as the workpiece and the tool. If the tool is continuously machined with the broken tool, the quality of the workpiece may be deteriorated.

The present invention relates to a machining method, a machining method, a machining method, a machining method, a machining method, and a machining method, A control system for a spindle device for a machine tool capable of preventing mechanical breakage during machining and improving the quality of a workpiece, and a spindle device including the control system.

A machining mode control system of a spindle apparatus for a machine tool according to an embodiment of the present invention includes a foreign matter detection sensor installed on a spindle and detecting whether an interference object exists on a movement path of the spindle; An instruction notifying unit for instructing the spindle to return to the origin when the interference object is detected through the foreign object detecting sensor and detecting the interference object; A machining mode setting unit for setting a machining mode of the spindle; A logic unit for determining whether a tool mounted on the spindle is suitable for the machining mode; A pressure detecting sensor for measuring a pressure generated when a tool mounted on the spindle contacts the workpiece in accordance with the machining mode; A machining mode resetter for adjusting a machining feed of the spindle in the machining mode based on a pressure value measured through the pressure detection sensor before machining; And a machining mode changing section for changing a detailed setting of the machining mode based on a pressure value measured through the pressure detecting sensor during machining.

Further, the foreign object detecting sensor may include a laser sensor or a photo sensor.

The machining mode resetting unit may adjust the machining feed of the spindle by 10% of the entire machining feed until the pressure value detected through the pressure detecting sensor reaches a preset reference value.

In addition, when the pressure value measured through the pressure detecting sensor during machining exceeds a preset reference value, the machining mode changing unit repeats the machining operation by dividing the machining operation into a plurality of steps, The detail setting can be changed.

Further, the machining mode changing section may instruct the chip discharge and the additional supply of the cutting oil when the pressure value measured through the pressure detecting sensor during machining exceeds a preset reference value.

A spindle apparatus for a machine tool according to another embodiment of the present invention includes: a spindle on which a tool is mounted; A spindle driver for driving a spindle in accordance with a machining mode; A material fixture to which the workpiece is coupled and fixed; A foreign object detecting sensor installed on the spindle and detecting whether an interference object exists on the movement path of the spindle; An instruction / notification unit for instructing the spindle driving unit to return to the home position when the interference object is detected through the foreign object detection sensor and for detecting the interference object; A machining mode setting unit for setting a machining mode of the spindle; A logic unit for determining whether a tool mounted on the spindle is suitable for the machining mode; A pressure detecting sensor for measuring a pressure generated when a tool mounted on the spindle contacts the workpiece in accordance with the machining mode; A machining mode resetter for adjusting a machining feed of the spindle in the machining mode based on a pressure value measured through the pressure detection sensor before machining; And a machining mode changing section for changing a detailed setting of the machining mode based on a pressure value measured through the pressure detecting sensor during machining.

Further, the foreign object detecting sensor may include a laser sensor or a photo sensor.

The machining mode resetting unit may adjust the machining feed of the spindle by 10% of the entire machining feed until the pressure value detected through the pressure detecting sensor reaches a preset reference value.

In addition, when the pressure value measured through the pressure detecting sensor during machining exceeds a preset reference value, the machining mode changing unit repeats the machining operation by dividing the machining operation into a plurality of steps, The detail setting can be changed.

The apparatus further includes a chip discharge and a coolant supply unit for performing a chip discharge and a coolant supply, wherein the machining mode changing unit is configured such that, when a pressure value measured through the pressure detection sensor during machining exceeds a preset reference value, And an additional supply of chip discharge and coolant to the coolant supply.

According to the present invention, it is possible to precisely determine the suitability of the tool and the machining mode, eliminate the factors that may interfere with the machining, determine the pressure applied to the workpiece from the spindle before and after machining, It is possible to provide a control system for a spindle apparatus for a machine tool capable of preventing mechanical breakage during machining and improving the quality of a workpiece, and a spindle apparatus including the same.

1 is a block diagram showing a configuration of a spindle apparatus including a control system according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating an operation of the spindle apparatus of FIG. 1;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

In the following drawings, thickness and size of each layer are exaggerated for convenience and clarity of description, and the same reference numerals denote the same elements in the drawings. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a,""an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

1 is a block diagram showing a configuration of a spindle apparatus including a control system according to an embodiment of the present invention.

Referring to FIG. 1, a spindle apparatus 1000 for a machine tool according to an embodiment of the present invention includes a machining unit 100 and a control unit 200. The machining unit 100 includes a spindle 110, a spindle driving unit 120, a work fixing unit 130, a chip discharge unit, and a coolant supply unit 140. The system control unit 200 includes a foreign object detection sensor 210, an instruction / notification unit 220, a processing mode setting unit 230, a logic unit 240, a pressure detection sensor 250, a processing mode resetting unit 260, And a machining mode changing unit 270.

The spindle 110 is one of components of a machine tool such as a lathe or a drilling machine. The shaft serves as a rotating shaft or a main shaft for mounting the workpiece or the cutting tool. Since such a spindle 110 is well known to those skilled in the art, further explanation is omitted here.

The spindle driver 120 transfers the spindle 110 from the origin to a machining position, provides power to the spindle 110, and drives the spindle 110 according to a set machining mode. The origin means a position at which the tool can be changed. The spindle driving unit 120 may transfer the spindle 110 to the machining position for pressure detection through the pressure detecting sensor 250. After the pressure is detected, ) Can be returned to the origin again. Since the spindle driver 120 is well known to those skilled in the art, further description is omitted here.

The work fixing part 130 is a part to which a workpiece is coupled and fixed. Since such a material fixing unit 130 is well known to those skilled in the art, further explanation is omitted here.

The chip discharge and cutting oil supply unit 140 discharges chips discharged from the work through the machining operation of the spindle 110, and supplies cutting oil for cooling and lubricating the tool during cutting. The chip discharging and cutting oil supply unit 140 may operate according to a preset machining mode, but may perform an additional operation according to a separate instruction of the machining mode changing unit 270.

The foreign object detecting sensor 210 is installed on the spindle 110 to detect whether an interference object exists on the movement path of the spindle 110. The foreign substance detection sensor 210 may include a laser sensor or a photosensor.

When an interference object is detected through the foreign object detecting sensor 210, the indicating / notifying unit 220 instructs the spindle driving unit 120 to return to the origin for returning the spindle 110 to the origin, An alarm operation is performed to notify that an object has been detected. For this purpose, the instruction / notification unit 220 may further include a separate lamp or a beep generator to inform the user whether the interference object is detected.

The machining mode setting unit 230 is configured to set the machining mode of the spindle 110. For example, the machining mode setting unit 230 may set a feed amount of the spindle 110, a machining feed, and the like.

The logic unit 240 determines whether the tool mounted on the spindle 110 is suitable for the machining mode set through the machining mode setting unit 230. [ For example, in the machining mode setting unit 230, a machining mode for cutting operation is set. When the drill mounted on the spindle 110 is mounted, It is determined that they do not coincide with each other and the user can be notified. The determination as to whether or not the tool and the machining mode are matched in the machining mode setting unit 230 can be implemented by various methods. For example, it is possible to determine whether the machining mode is possible by reading a unique code recorded in the tool and machining mode can do.

The pressure detecting sensor 250 can measure the pressure generated when the tool mounted on the spindle 110 contacts the workpiece according to the set machining mode. The pressure detection sensor 250 can measure the pressure before and during the processing.

The machining mode resetting unit 260 may be configured to reset the machining mode of the spindle 110 (see FIG. 2) in the machining mode set through the machining mode setting unit 230 based on the pressure value measured through the pressure detecting sensor 250, ) To adjust the machining feed rate. For example, the machining mode resetting unit 260 may reset the machining feed of the spindle 110 to 10% of the entire machining feed until the pressure value detected through the pressure detecting sensor 250 reaches a preset reference value. Can be adjusted in such a way as to increase or decrease each value.

The machining mode changing section 270 can change the detailed setting of the machining mode based on the pressure value measured through the pressure detecting sensor 250 during the machining operation. More specifically, when the pressure value measured through the pressure detecting sensor 250 during machining exceeds a preset reference value, the machining mode changing unit 270 repeatedly performs the machining operation in a plurality of steps The detail setting of the machining mode can be changed so that the reverse operation is further advanced for each step. For example, the detail setting is changed so that the backward 1 mm operation is repeatedly performed in several steps after the forward 3 mm operation for each of the plurality of steps, so that the compensation for the pressure value exceeding the above value is performed.

In addition, when the pressure value measured through the pressure detection sensor 250 during machining exceeds a predetermined reference value, the machining mode changing unit 270 may instruct the chip discharge and the additional supply of the cutting oil.

FIG. 2 is a flowchart illustrating an operation of the spindle apparatus of FIG. 1; Hereinafter, the operation of the spindle device 1000 shown in FIG. 1 will be described with reference to FIG.

First, a tool is mounted on the spindle 110, and a workpiece to be machined is fixed to the workpiece fixing portion 130.

Thereafter, the mode for each work material is inputted and set through the machining mode setting unit 230.

Then, the spindle 110 is fed to the workpiece in accordance with the machining mode set using the spindle driver 120. Here, the rapid movement means movement along the conveyance path of the set machining mode without the spindle 110 being driven. During the rapid movement, the foreign object detecting sensor 210 detects whether or not an interference object is present on the conveyance path, and notifies the indication / notification unit 220 when an interference object is detected. At this time, the instruction / notification unit 220 instructs the spindle driving unit 120 to return to the home position so that the spindle 110 immediately returns to the origin, and notifies the user that an interference object is detected on the transportation path. If an interference object is not detected, the logic unit 240 determines whether the tool mounted on the spindle 110 is suitable for performing the machining mode set through the machining mode setting unit 230, It informs.

Thereafter, the spindle 110 is transferred to the workpiece through the spindle driver 130 before machining, and the tool is brought into contact with the workpiece. The pressure value generated at this time is measured through the pressure sensor 250. If the detected pressure value is different from the predetermined reference value, the processing mode resetting unit 260 resets the processing mode until the pressure value detected through the pressure detecting sensor 250 reaches a reference value. For example, the machining mode resetting unit 260 may adjust the pressure value by adjusting the machining feed of the spindle 110 by 10% with respect to the entire machining feed and re-checking the machining mode in the same manner as described above.

The process of detecting the pressure value through the pressure detecting sensor 250 may be periodically performed during the machining operation. If it is determined that the detected pressure value exceeds the reference value, the machining mode changing unit 270 repeats the machining operation by dividing the machining operation into a plurality of steps, . For example, by dividing one machining operation into a plurality of steps and adding a backward movement to each of the steps at a predetermined distance, it is possible to reduce machining errors due to excess pressure.

During this process, the machining mode changing unit 270 instructs the chip discharge and the coolant supply unit 140 to perform additional operations each time a plurality of steps are completed, thereby enabling chip discharge and additional supply of cutting oil.

When the machining operation is performed according to the machining mode that has been reset and changed in this manner, the spindle 110 is returned to the origin by the spindle driving unit 130, and the machining operation is completed.

It is to be understood that the present invention is not limited to the above-described embodiment, and various modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

1000: Spindle device for machine tools
100:
110: spindle
120: spindle driving part
130:
140: chip discharge and coolant supply part
200:
210: Foreign object detection sensor
220: Instruction /
230: machining mode setting section
240: logic section
250: Pressure detection sensor
260: Processing mode resetting unit
270: machining mode changing section

Claims (10)

A foreign object detecting sensor installed on the spindle for detecting presence or absence of an interference object on the movement path of the spindle;
An instruction notifying unit for instructing the spindle to return to the origin when the interference object is detected through the foreign object detecting sensor and detecting the interference object;
A machining mode setting unit for setting a machining mode of the spindle;
A logic unit for determining whether a tool mounted on the spindle is suitable for the machining mode according to whether a unique code assigned to a tool mounted on the spindle matches an intrinsic code assigned to the machining mode;
A pressure detecting sensor for measuring a pressure generated when a tool mounted on the spindle contacts the workpiece in accordance with the machining mode;
A machining mode resetter for adjusting a machining feed of the spindle in the machining mode based on a pressure value measured through the pressure detection sensor before machining; And
And a machining mode changing unit for changing a detailed setting of the machining mode based on a pressure value measured through the pressure detecting sensor during machining. The method according to claim 1,
Wherein the foreign object detecting sensor includes a laser sensor or a photo sensor. The method according to claim 1,
Wherein the machining mode resetting unit adjusts the machining feed of the spindle by 10% of the entire machining feed until the pressure value detected through the pressure detecting sensor reaches a predetermined reference value. Mode control system. The method according to claim 1,
Wherein the machining mode changing unit repeatedly performs the machining operation by dividing the machining operation into a plurality of steps when the pressure value measured through the pressure detecting sensor during machining exceeds a predetermined reference value, And changing the setting of the machining mode of the spindle device. 5. The method of claim 4,
Wherein said machining mode changing section instructs to supply chip discharge and cutting oil when the pressure value measured through said pressure detecting sensor during machining exceeds a predetermined reference value. Control system. A spindle on which the tool is mounted;
A spindle driver for driving a spindle in accordance with a machining mode;
A material fixture to which the workpiece is coupled and fixed;
A foreign object detecting sensor installed on the spindle and detecting whether an interference object exists on the movement path of the spindle;
An instruction / notification unit for instructing the spindle driving unit to return to the home position when the interference object is detected through the foreign object detection sensor and for detecting the interference object;
A machining mode setting unit for setting a machining mode of the spindle;
A logic unit for determining whether a tool mounted on the spindle is suitable for the machining mode according to whether a unique code assigned to a tool mounted on the spindle matches an intrinsic code assigned to the machining mode;
A pressure detecting sensor for measuring a pressure generated when a tool mounted on the spindle contacts the workpiece in accordance with the machining mode;
A machining mode resetter for adjusting a machining feed of the spindle in the machining mode based on a pressure value measured through the pressure detection sensor before machining; And
And a machining mode changing unit for changing a detailed setting of the machining mode based on a pressure value measured through the pressure detecting sensor during machining. The method according to claim 6,
Wherein the foreign object detecting sensor includes a laser sensor or a photo sensor. The method according to claim 6,
Wherein the machining mode resetting unit adjusts the machining feed of the spindle by 10% of the entire machining feed until the pressure value detected through the pressure detecting sensor reaches a preset reference value. The method according to claim 6,
Wherein the machining mode changing unit repeatedly performs the machining operation by dividing the machining operation into a plurality of steps when the pressure value measured through the pressure detecting sensor during machining exceeds a predetermined reference value, And changing the setting of the spindle device. 10. The method of claim 9,
Further comprising a chip discharge and a coolant supply unit for performing chip discharge and coolant supply,
Wherein the machining mode changing section instructs chip discharge and supply of cutting fluid and cutting fluid to the cutting fluid supply section when the pressure value measured through the pressure detection sensor during machining exceeds a preset reference value. Spindle device.

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