TW201912296A - Chatter monitoring and suppression device - Google Patents

Abstract

A chatter monitoring and suppression device is suitable for use in a machine tool. The chatter monitoring and suppression device includes a knob adjusting mechanism, a machining information capturing unit and a controller. The knob adjustment mechanism is disposed on a control panel of the machine tool and has a knob adjuster which is in contact with a control knob on the control panel. The machining information capturing unit is configured to capture a machining information from the machine tool. The controller is connected to the knob adjustment mechanism and the machining information capturing unit, and the controller receives the machining information. The controller is configured to determine whether to adjust one of the operating parameters of the tool machine based on the machining information. If so, the controller controls the knob adjustment mechanism to adjust the control knob on the control panel.

Description

Flutter detection and suppression device

The present disclosure relates to a flutter detecting and suppressing device.

Generally speaking, in the cutting process of the machine tool, if the machining conditions are set poorly, the sound produced by the machining will become sharp or low, which means that the tool tip and the machine have autonomous vibration, which is flutter. . When this happens, the machined surface on the machined workpiece will be rough and the risk of tool wear will increase.

In order to avoid the above problems, the current practice requires the operator to monitor the side. When the sound of the processing is abnormal, adjust the spindle speed or change the processing parameters moderately, and it is impossible to remotely monitor and automatically change the processing in the controller. parameter.

The present disclosure relates to a flutter detection and suppression device that can remotely monitor a power tool and improve its processing quality.

One embodiment of the present disclosure includes a flutter detection and suppression device suitable for use in a machine tool controller. The machine tool controller has a control knob that is arranged on a control plane of the machine tool controller. The flutter detecting and suppressing device comprises a knob adjusting mechanism, a processing information capturing unit and a controller. The knob adjustment mechanism is disposed on the control plane and has a knob adjuster, and the knob adjuster is matched with the control knob. The processing information capture unit is configured to capture a processing information of the machine tool. The controller is coupled to the knob adjustment mechanism and the processing information capture unit, and receives processing information. The controller is configured to determine whether to adjust one of the working parameters of the machine tool controller according to the processing information, and if so, the controller control knob adjusts the mechanism to adjust the control knob on the control plane.

In some embodiments of the present disclosure, the knob adjuster includes a stepping motor and a circular sleeve, and the circular sleeve is coupled to the stepping motor and sleeved on the control knob.

In some embodiments of the present disclosure, the processing information includes a processed sound information, and the controller determines whether the processed sound size is higher than an upper threshold or lower than a lower threshold, and if so, the controller controls the adjustment mechanism of the adjustment mechanism. Control knob on the plane.

In some embodiments of the present disclosure, the control knob of the power tool controller can adjust the spindle speed of the machine tool, and the controller adjusts the spindle speed of the machine tool by adjusting the knob adjustment mechanism.

In some embodiments of the present disclosure, the control knob of the power tool controller can adjust the feed rate of the machine tool, and the controller adjusts the feed rate of the machine tool by adjusting the knob adjustment mechanism.

In some embodiments of the present disclosure, the flutter detecting and suppressing device further includes a plane moving mechanism disposed on the control plane. The planar motion mechanism includes a frame, a bracket, and a mover. The frame is arranged on a peripheral area of the control plane of the machine tool controller. The bracket is disposed on the frame, wherein the bracket extends in a first direction and is movable in a second direction. The mover has an electric cylinder disposed on the bracket, wherein the mover is movable in the first direction, the electric cylinder is movable in a third direction, and the third direction is substantially perpendicular to the first direction and the second direction.

In some embodiments of the present disclosure, the flutter detecting and suppressing device, wherein the first direction is substantially perpendicular to the second direction.

In some embodiments of the present disclosure, the flutter detecting and suppressing device, wherein the controller controls the electric cylinder to contact a button of the machine tool controller on the control plane in the third direction.

In some embodiments of the present disclosure, the flutter detecting and suppressing device further includes an image capturing unit, wherein the image capturing unit is coupled to the controller and configured to capture a working screen information of the machine tool controller.

In some embodiments of the present disclosure, the flutter detecting and suppressing device, wherein the controller is further configured to convert the working screen information into a spindle rotational speed information, a position information, or a feed rate information via the image recognition processing.

In some embodiments of the disclosure, the flutter detection and suppression device further includes a cloud database, wherein the cloud database and the image capturing unit are connected to the controller, configured to receive and store work screen information, Spindle speed information, position information or feed rate information.

Based on the above, the flutter detecting and suppressing device of the embodiment of the present disclosure can actively adjust the working machine by determining the abnormal condition according to the processing information by using the configuration of the knob adjusting mechanism, the processing information capturing unit, and the controller. The operating parameters of the controller to rule out the occurrence of abnormal conditions. On the other hand, the flutter detection and suppression device can also start and stop the processing procedure remotely by the configuration of the planar motion mechanism, and can respond to different levels of emergency. In addition, the flutter detection and suppression device can also record and store various parameter information when the abnormal condition occurs and various parameter information before and after the adjustment by the configuration of the image capturing unit and the cloud database, so as to be followed by the operator. Modify the reference for the machining program.

Please refer to FIG. 1A to FIG. 2B . FIG. 1A is a front view of the flutter detecting and suppressing device 100 according to an embodiment of the present disclosure. FIG. 1B is a schematic rear view of the flutter detecting and suppressing apparatus 100 according to an embodiment of the present disclosure. 2A is a front elevational view of the flutter detection and suppression device 100 mounted to the machine tool controller 10 in accordance with an embodiment of the present disclosure. FIG. 2B is a schematic rear view of the flutter detecting and suppressing device 100 mounted on the machine tool controller 10 according to an embodiment of the present disclosure.

As shown in FIGS. 1A to 2B, in the present embodiment, the flutter detecting and suppressing device 100 is applied to a machine tool controller 10 (shown in FIGS. 2A and 2B), for example, for example. In this embodiment, the machine tool controller 10 is a computer numerical control (Computer Numerical Control, CNC), but the disclosure is not limited thereto. The machine tool controller 10 has a control plane CP on which at least one button CB, a control knob CK, and a display screen CD (shown in FIG. 2A) are disposed to control various processing conditions for the workpiece. Specifically, in the present embodiment, the flutter detecting and suppressing device 100 includes a knob adjusting mechanism 110 and a plane moving mechanism 120, wherein the knob adjusting mechanism 110 and the plane moving mechanism 120 are disposed on the control plane CP. For example, in the present embodiment, the material of the flutter detecting and suppressing device 100 is, for example, aluminum, and is fabricated by an extrusion material process, which can save the required materials and reduce the weight of the device.

On the other hand, as shown in FIGS. 2A to 2B, in the present embodiment, in order not to damage the structure of the working machine 10, when the flutter detecting and suppressing device 100 is mounted on the machine tool controller 10, The L-shaped mount FX is used. For example, in the embodiment, the flutter detecting and suppressing device 100 can fix the L-shaped holder FX to the back of the control plane CP of the machine tool controller 10 by screws, and consider the tool machine controller 10 One side of the control plane CP is usually provided with a rotary shaft, which is therefore suitable for mounting on the other side of the control plane CP of the machine tool controller 10.

FIG. 3 is a schematic diagram of a knob adjustment mechanism 110 in accordance with an embodiment of the present disclosure. As shown in FIG. 2B and FIG. 3, in the present embodiment, the knob adjusting mechanism 110 is disposed on the control plane CP and has a knob adjuster 111, and the knob adjuster 111 is engaged with the control knob CK. For example, as shown in FIG. 3, in the present embodiment, the knob adjuster 111 includes a stepping motor 111a and a circular sleeve 111b. The circular sleeve 111b is connected to the stepping motor 111a and is sleeved on Control knob CK (shown on Figure 2B). In the present embodiment, the material of the circular sleeve 111b is, for example, plastic. As shown in FIG. 2B and FIG. 3, in the present embodiment, the size of the circular sleeve 111b is the same as the size of the control knob CK of the control plane CP of the machine tool controller 10, so that it can be better combined and controlled. Rotation angle. Further, the arrangement of the stepping motor 111a can also freely control the circular sleeve 111b to adjust the rotation angle of the control knob CK of the machine tool controller 10.

Thus, as shown in FIG. 2B and FIG. 3, in the present embodiment, the knob adjustment mechanism 110 can adjust the spindle rotation speed or the feed rate of the machine tool controller 10 by adjusting the control knob CK on the control plane CP. For example, in this embodiment, the control knob CK1 of the machine tool controller 10 can adjust the spindle speed of the machine tool controller 10, so the knob adjustment mechanism 110 can adjust the tool by adjusting the control knob CK1 on the control plane CP. The spindle speed of the machine controller 10. Similarly, the control knob CK2 of the machine tool controller 10 can adjust the feed rate of the machine tool controller 10, so the knob adjustment mechanism 110 can also adjust the machine tool controller 10 by adjusting the control knob CK2 on the control plane CP. Feed rate.

4 is a partial schematic view of a planar motion mechanism 120 in accordance with an embodiment of the present disclosure. As shown in FIGS. 2A and 4, in the present embodiment, the planar motion mechanism 120 includes a frame 121, a bracket 122, and a mover 123. The frame 121 is arranged on a peripheral region of the control plane CP of the machine tool controller 10. The bracket 122 is disposed on the frame 121, wherein the bracket 122 extends along a first direction D1 and is movable along a second direction D2. In the present embodiment, the first direction D1 is substantially perpendicular to the second direction D2. For example, in the embodiment, the first direction D1 is the X-axis direction of the control plane CP, and the second direction D2 is the Y-axis direction of the control plane CP, but the disclosure is not limited thereto.

Specifically, as shown in FIG. 4, in the embodiment, the mover 123 has an electric cylinder 123a disposed on the bracket 122, wherein the mover 123 is movable along the first direction D1, and the electric cylinder 123a can be along the The third direction D3 moves, and the third direction D3 is substantially perpendicular to the first direction D1 and the second direction D2. For example, in the embodiment, the third direction D3 is the Z-axis direction of the control plane CP, but the disclosure is not limited thereto.

Thus, the electric cylinder 123a on the mover 123 can be moved by the mover 123 on the control plane CP of the machine tool controller 10. For example, in the present embodiment, the mover 123 can use, for example, a stepper motor (not shown) to simplify control and drive with, for example, a belt and a linear guide (not shown). Further, since the electric cylinder 123a is movable in the third direction D3 on the control plane CP perpendicular to the machine tool controller 10, the relevant button CB for executing the machining program such as the touch start key or the stop key can be touched.

FIG. 5 is a system architecture diagram of a flutter detecting and suppressing apparatus 100 in accordance with an embodiment of the present disclosure. Referring to FIG. 5, in the embodiment, the flutter detecting and suppressing device 100 further includes a processing information capturing unit 130 and a controller 140, wherein the controller 140 and the knob adjusting mechanism 110, the plane moving mechanism 120, and The processing information capturing unit 130 is connected. For example, in the embodiment, the processing information capturing unit 130 is, for example, a sound capturing unit, a microphone, or a vibration capturing unit, and has processing information for capturing processed sound information and processing vibration information. The function. In this embodiment, the controller 140 can be an embedded system and has functions of panel control, vibration detection, screen monitoring, and data storage.

For example, as shown in FIG. 5, in the embodiment, the operator can give an instruction at the remote end, and control the electric cylinder 123a to contact the machine tool controller 10 in the control plane CP in the third direction D3 through the controller 140. The upper button CB, for example, a cycle start button on the control panel of the machine tool controller 10 to operate the machine tool controller 10, the operator can also remotely activate the flutter detection and suppression device 100, and at the same time The monitoring is automatically started, and the plane motion mechanism 120 is moved to the position of the stop button of the control panel after pressing the start button, so that the operator can select whether to stop processing during the monitoring process. For example, when an abnormal situation with a high degree of urgency occurs, the operator can urgently stop the machining program. In the case of an abnormal situation with a low degree of urgency, the operator can perform the processing again after the abnormal condition is eliminated.

On the other hand, as shown in FIG. 5, in the embodiment, the processing information capturing unit 130 is configured to capture a processing information of the machine tool controller 10, wherein the processing information includes a processing sound information or a processing vibration. News. For example, in the embodiment, the processing information capture unit 130 can be placed near the main axis of the machine tool controller 10, and the existing data capture function can be used to capture the processing information and process the information. Take sound waves or electric waves that change with time. Then, using the fast Fourier transform function, the continuous waveform measured in the time domain is cut into a plurality of discrete data, and the data is converted into the frequency domain by numerical integration, so that the processed sound information is obtained or Processing information for processing vibration information.

In this embodiment, the controller 140 receives the processing information. The controller 140 is configured to determine whether to adjust an operating parameter of the machine tool controller 10 according to the processing information. If so, the controller 140 controls the knob adjusting mechanism to adjust the control knob CK on the control plane CP. Specifically, in the present embodiment, the reference of the processing information judged by the controller 140 is based on the processed sound information contained therein. For example, the controller 140 determines whether the processed sound size is above an upper threshold or below a lower threshold. If so, it indicates that an abnormal condition has occurred, such as a flutter phenomenon or abnormal noise. At this time, the controller 140 controls the knob adjustment mechanism to adjust the control knob CK on the control plane CP. In this way, the controller 140 can adjust the spindle rotation speed of the power tool controller 10 or the feed rate of the machine tool controller 10 by the control knob adjustment mechanism to suppress the chattering phenomenon or improve the machining condition.

Referring to FIG. 1A to FIG. 2B and FIG. 5 again, in the embodiment, the flutter detecting and suppressing device 100 further includes an image capturing unit 150, wherein the image capturing unit 150 is connected to the controller 140. The configuration is configured to capture a work screen information of the machine tool controller 10. For example, as shown in FIG. 2A, the image capturing unit 150 can be located above the plane motion mechanism 120, so that the image capturing unit 150 can stably capture the screen of the display screen CD of the power tool controller 10 to obtain Clear work screen information.

Specifically, in this embodiment, the controller 140 can be configured to convert the work screen information into a spindle speed information, a position information, or a feed rate information via the image recognition processing. In addition, the controller 140 may also organize the above information into a log file, wherein the log file includes various parameter information when the abnormal condition occurs and various parameter information before and after the adjustment, as a reference for the operator to subsequently modify the processing program.

In addition, the above information may be stored in a database of machine parameter automation or in a cloud database 160 of the flutter detection and suppression device 100. Specifically, as shown in FIG. 5, the cloud database 160 and the image capturing unit 150 are connected to the controller 140, and configured to receive and store the above-mentioned work screen information, spindle rotation speed information, position information, or feed rate information. So that the operator can use this information to adjust the parameters or the data of the next processing to modify the relevant processing program. In this way, the roughness of the surface of the workpiece can be effectively improved and the tool life can be extended.

In summary, the flutter detecting and suppressing device of the embodiment of the present disclosure can actively adjust the abnormality condition according to the processing information by using the configuration of the knob adjusting mechanism, the processing information capturing unit, and the controller. The working parameters of the machine tool controller can eliminate the occurrence of abnormal conditions, and can effectively improve the surface roughness of the workpiece and prolong the tool life. On the other hand, the flutter detection and suppression device can also start and stop the processing procedure remotely by the configuration of the planar motion mechanism, and can respond to different levels of emergency. In addition, the flutter detection and suppression device can also record and store various parameter information when the abnormal condition occurs and various parameter information before and after the adjustment by the configuration of the image capturing unit and the cloud database, so as to be followed by the operator. Modify the reference for the machining program.

10‧‧‧Tool machine controller

100‧‧‧ flutter detection and suppression device

110‧‧‧ knob adjustment mechanism

111‧‧‧ knob adjuster

111a‧‧‧stepper motor

111b‧‧‧round sleeve

120‧‧‧ Planar sports agency

121‧‧‧Frame

122‧‧‧ bracket

123‧‧‧Mobile

123a‧‧‧Electric cylinder

130‧‧‧Processing Information Capture Unit

140‧‧‧ Controller

150‧‧‧Image capture unit

160‧‧‧Cloud database

CP‧‧‧ control plane

CB‧‧‧ button

CK, CK1, CK2‧‧‧ control knob

CD‧‧‧ display screen

D1‧‧‧ first direction

D2‧‧‧ second direction

D3‧‧‧ third direction

FX‧‧‧ fixing frame

Read the following detailed description and the corresponding drawings to understand the various aspects of the disclosure. It should be noted that, in accordance with standard practice in the industry, the various features are not drawn to scale. In fact, the size of multiple features can be arbitrarily increased or decreased to facilitate clarity of discussion. FIG. 1A is a front elevational view of a flutter detecting and suppressing apparatus according to an embodiment of the present disclosure. FIG. 1B is a schematic rear view of a flutter detecting and suppressing apparatus according to an embodiment of the present disclosure. 2A is a front elevational view of the flutter detection and suppression device mounted to the machine tool controller in accordance with an embodiment of the present disclosure. FIG. 2B is a schematic diagram showing the back of the flutter detecting and suppressing device mounted on the machine tool controller according to an embodiment of the present disclosure. FIG. 3 is a schematic diagram of a knob adjustment mechanism according to an embodiment of the present disclosure. Figure 4 is a partial schematic view of a planar motion mechanism in accordance with an embodiment of the present disclosure. FIG. 5 is a system architecture diagram of a flutter detecting and suppressing apparatus according to an embodiment of the present disclosure.

Claims (10)

A flutter detecting and suppressing device is provided for a machine tool controller. The machine tool controller has a control knob disposed on a control plane of the machine tool controller, and the flutter detecting and suppressing device comprises: a knob adjusting mechanism is disposed on the control plane, and has a knob adjuster, the knob adjuster is matched with the control knob; a processing information capturing unit configured to capture a processing information of the machine tool; and a a controller, connected to the knob adjusting mechanism and the processing information capturing unit, and receiving the processing information, wherein the controller is configured to determine whether to adjust an operating parameter of the machine tool controller according to the processing information, and if so, the controlling The knob controls the knob adjustment mechanism to adjust the control knob on the control plane. The flutter detecting and suppressing device according to claim 1, wherein the knob adjuster comprises: a stepping motor; and a circular sleeve connected to the stepping motor and fitted to the control knob on. The flutter detecting and suppressing device according to claim 1, wherein the processing information includes a processing sound information, and the controller determines whether the processing sound size is higher than an upper threshold or lower than a lower threshold. If so, the controller controls the knob adjustment mechanism to adjust the control knob on the control plane. The flutter detecting and suppressing device of claim 3, wherein the control knob of the machine tool controller adjusts a spindle speed of the machine tool, and the controller adjusts the knob by controlling the knob adjusting mechanism. The spindle speed of the machine tool. The flutter detecting and suppressing device of claim 3, wherein the control knob of the machine tool controller adjusts a feed rate of the machine tool, and the controller adjusts the mechanism by controlling the knob The feed rate of the machine tool. The flutter detecting and suppressing device according to claim 1, further comprising a plane moving mechanism disposed on the control plane, wherein the plane moving mechanism comprises: a frame disposed on the machine tool controller a peripheral portion of the control plane; a bracket disposed on the frame, wherein the bracket extends in a first direction and movable in a second direction; and a mover having an electric cylinder disposed thereon a bracket, wherein the mover is movable in the first direction, the electric cylinder is movable in a third direction, and the third direction is substantially perpendicular to the first direction and the second direction. The flutter detecting and suppressing device of claim 6, wherein the first direction is substantially perpendicular to the second direction. The flutter detecting and suppressing device of claim 6, wherein the controller controls the electric cylinder to contact a button of the machine tool controller on the control plane in the third direction. The flutter detecting and suppressing device of claim 1, further comprising an image capturing unit, wherein the image capturing unit is connected to the controller and configured to capture a work of the machine tool controller Picture information. The flutter detection and suppression device of claim 9, wherein the controller is further configured to convert the work screen information into a spindle speed information, a position information or a feed rate information via image recognition processing. .