KR20230149567A - Orientation distortion detecting apparatus of turret and method thereof - Google Patents

Abstract

The present invention operates so that the fix part is horizontal to the drive shaft to primarily detect orientation deviation depending on the sensing result of the sensing part and whether the fix part is operating normally before replacing the milling holder, and even when it is judged to be in normal operation as a result of the primary detection, the milling holder When replacing, orientation deviation is additionally detected and an alarm is generated depending on the phase change of the spindle motor and/or overload of the indexing motor, preventing damage or destruction of tools or equipment, reducing maintenance costs and time, and reducing maintenance costs. This relates to a turret orientation distortion detection device and detection method that can improve productivity by reducing processing time and maximize the stability and reliability of the turret.

Description

Orientation distortion detecting apparatus of turret and method thereof}

The present invention relates to a device and method for detecting turret orientation deviation, and more specifically, to a machine tool that can automatically, quickly and accurately detect orientation deviation of the turret of a 3-axis milling spindle to prevent damage or destruction of equipment. This relates to a device and method for detecting turret orientation deviation.

In general, machine tools refer to machines used to process metal/non-metal workpieces into desired shapes and dimensions using appropriate tools using various cutting or non-cutting processing methods.

Various types of machine tools, including turning centers, vertical/horizontal machining centers, door-type machining centers, Swiss turns, electric discharge machines, horizontal NC boring machines, CNC lathes, and complex processing machines, are widely available in various industrial sites to suit the purpose of the work. It is being used.

Among machine tools, a complex machining machine refers to a turning center equipped with a multi-functional automatic tool changer (ATC) and tool magazine that performs various machining types such as turning, drilling, tapping, and milling. When an operator loads or exchanges tools required for processing in a multi-processing machine, he or she manually installs the tools into the tool magazine.

In general, various types of machine tools currently in use are equipped with an operating panel to which numerical control (NC) or computerized numerical control (CNC) technology is applied. This operating panel is equipped with various function switches or buttons and a monitor.

In addition, a machine tool includes a table on which the workpiece material is seated and transported for processing the workpiece, a pallet to prepare the workpiece before processing, a spindle on which the tool or workpiece is combined and rotated, a tailstock to support the workpiece, etc. during processing, and an anti-vibration tool. Equipped with etc.

In general, in machine tools, tables, tool rests, spindles, tailstocks, vibration stoppers, etc. are equipped with transfer units that transfer along a transfer axis to perform various machining.

Additionally, machine tools generally use multiple tools for various processing, and a tool magazine or turret is used as a tool storage location to store and store multiple tools.

These machine tools use multiple tools for various processing, and a tool magazine is used as a tool storage location to store multiple tools.

In addition, machine tools are generally equipped with an automatic tool changer (ATC) for withdrawing or storing a specific tool from a tool magazine according to a command from a numerical control unit in order to improve the productivity of the machine tool.

Additionally, machine tools are generally equipped with an automatic pallet changer (APC) to minimize non-processing time. The automatic pallet changer (APC) automatically exchanges pallets between the workpiece machining area and the workpiece installation area. A workpiece can be mounted on a pallet.

Additionally, machine tools are generally classified into turning centers and machining centers depending on the processing method. Among these, turning centers are equipped with multiple tools and are equipped with a turret tool rest for indexing the tools needed during the machining process.

In modern times, tool stands used in machine tools such as turning centers are required for mass production of components used in automobiles and general equipment. During simple machining, multiple tools are used to cope with continuous operation due to tool life issues, and somewhat complex In the case of parts, the ability to complete multiple machining operations on one machine is required.

Accordingly, turning centers are adopting milling spindles for 3-axis machining for some tapping and simple milling turning to perform hole, tapping, and milling turning operations and to improve productivity and processing efficiency.

That is, as shown in Figure 1, a conventional machine tool turret combines a clutch 3 rotatably installed on the tool rest body 2 and a milling holder 5 to rotate the milling tool 6 to perform machining. Perform.

Although not shown in the drawing, multiple tool holders can be mounted on the turret, and among these, the milling holder is coupled with the clutch through turret indexing to perform milling by rotating the tool mounted on the milling holder in conjunction with the rotation of the clutch. Thus, various machining processes are performed on one machine tool.

In other words, when replacing a milling holder in a 3-axis milling spindle tool rest, orientation matching is required to align the clutch guide and the drive tang of the clutch to combine the clutch and the milling holder without colliding or misconnecting the milling holder.

However, conventional turret tool stands for machine tools, especially 3-axis milling spindle turret tool stands, do not automatically detect this orientation deviation, resulting in damage or breakage of equipment or tools, increasing maintenance costs and time, and increasing customer satisfaction. There was a problem that caused dissatisfaction.

To achieve this, there was a problem of manually checking for orientation deviation every time, which caused inconvenience to workers and decreased productivity as non-processing time increased.

In addition, as shown in Figure 1, in the 3-axis milling spindle tool rest, there is a possibility that orientation may be distorted as the stopper (4) to prevent rotation when changing the milling holder operates up and down in the height direction (Z-axis direction) as shown by the arrow. Even when this increases and orientation deviation occurs, there is a problem in recognizing it as normal and performing processing.

In addition, the conventional orientation deviation detection device and detection method of the machine tool turret does not perform automatically or detects orientation deviation in various states and stages, which reduces accuracy and increases the possibility of safety accidents. There was a problem that the stability and reliability of machine tools decreased.

Republic of Korea Patent Publication No. 10-2007-0069325 Republic of Korea Patent Publication No. 10-2006-0059647 Republic of Korea Patent Publication No. 10-2016-0109000 Republic of Korea Patent Publication No. 10-2012-0086774

The present invention is to solve the above problems, and the purpose of the present invention is to operate the fix part horizontally to the drive shaft to primarily detect orientation deviation depending on the sensing result of the sensing part and whether the fix part is operating normally before replacing the milling holder. Even if the primary detection result determines normal operation, orientation deviation is additionally detected and an alarm is generated depending on the phase change of the spindle motor and/or overload of the indexing motor when replacing the milling holder, preventing damage to tools or equipment. This relates to a turret orientation distortion detection device and detection method that can prevent damage, reduce maintenance costs and time, improve productivity by reducing non-processing time, and maximize the stability and reliability of the turret.

In order to achieve the purpose of the present invention, a device for detecting misorientation of a turret according to the present invention includes a tool rest body; A tool rest that accommodates a plurality of tool holders including a milling holder equipped with a milling tool and is indexable installed on the tool rest body; An indexing motor installed adjacent to the tool rest and indexing the tool rest; A spindle motor installed adjacent to the tool rest; A drive shaft that rotates in conjunction with the spindle motor; A clutch shaft installed on the tool rest body to rotate in conjunction with the drive shaft to rotate the milling tool through engagement with the milling holder; A sensing unit installed adjacent to the drive shaft to sense the correct position of the clutch shaft; and a control unit that automatically detects orientation deviation for coupling the milling holder and the clutch shaft.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the turret orientation deviation detection device is a fix for blocking the rotation of the drive shaft for coupling the milling holder and the clutch shaft before replacing the milling holder. It may further include:

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the control unit of the turret orientation deviation detection device detects orientation deviation according to the sensing result of the sensing unit and whether the fixing unit is operating normally before replacing the milling holder. It is detected primarily, and even if the primary detection result determines normal operation, orientation deviation can be additionally detected depending on whether the phase of the spindle motor changes and/or the indexing motor overload occurs when the milling holder is replaced.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the fixing portion of the turret orientation deviation detection device is disposed adjacent to the drive shaft so as to be parallel to the drive shaft and runs in a horizontal direction with respect to the drive shaft. It can operate to block the rotation of the drive shaft.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the control unit of the turret orientation deviation detection device generates data for automatically detecting orientation deviation for the combination of the milling holder and the clutch shaft. a memory unit for storing; an analysis unit that analyzes whether orientation deviation occurs according to the data stored in the memory unit, the operating states of the sensing unit, the fix unit, the spindle motor, and the indexing motor; and a processing unit that continues exchanging the milling holder or stops exchanging the milling holder and generates an alarm according to the data stored in the memory unit and the analysis result of the analysis unit.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the memory unit of the control unit of the turret orientation deviation detection device includes tool information, tool holder information, clutch shaft position information, fix unit operation information, and orientation. A basic data storage unit that stores data on the deviation reference value, reference peak value, reference load amount, and processing program; an operating data storage unit that stores data sensed from the sensing unit and data on whether the fix unit is operating normally; a collection data storage unit that stores data on the current phase change of the spindle motor and the load amount of the indexing motor; and a real-time data storage unit that stores the analysis results of the analysis unit and the processing results of the processing unit in real time.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the orientation deviation amount reference value, reference peak value, and reference load amount of the turret orientation deviation detection device automatically provide orientation deviation information when orientation deviation occurs. By collecting and classifying new data, new data can be continuously generated through machine learning and automatically stored in the basic data storage.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the analysis unit of the control unit of the turret orientation deviation detection device determines the data stored in the memory unit, the sensing result of the sensing unit, and the normal operation of the fix unit. A confirmation unit that checks whether orientation deviation occurs first before replacing the milling holder; A determination unit that determines whether a phase change of the spindle motor or a load of the indexing motor occurs through data stored in the memory unit when the milling holder is replaced when the orientation deviation does not occur primarily according to the confirmation result of the confirmation unit; and a comparison unit that compares the data stored in the memory unit with the phase change amount of the spindle motor or the load amount of the indexing motor when the phase change of the spindle motor or the load of the indexing motor occurs as a result of the determination of the determination unit. there is.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the processing unit of the control unit of the turret orientation deviation detection device performs milling operation before and after milling holder exchange according to the data stored in the memory unit and the analysis result of the analysis unit. A detection unit that automatically detects whether orientation deviation occurs when replacing a holder; and an alarm unit that generates an alarm when orientation deviation occurs according to the detection result of the detection unit.

In addition, in another preferred embodiment of the turret orientation deviation detection device according to the present invention, the turret orientation deviation detection device is a cam installed on one side of the drive shaft to face the clutch shaft to rotate in conjunction with the drive shaft. It may further include ;.

In order to achieve another object of the present invention, a method for detecting orientation deviation of a turret according to the present invention includes the steps of storing data for automatically detecting orientation deviation for coupling a milling holder and a clutch shaft; A step of operating the fixing unit and sensing the correct position of the clutch shaft before replacing the milling holder; Checking whether a primary misorientation occurs before replacing the milling holder according to pre-stored data, sensing results, and whether the fixing unit is operating normally; If the orientation deviation does not occur primarily according to the confirmation result, determining whether the phase of the spindle motor or the load of the indexing motor occurs through pre-stored data when replacing the milling holder; As a result of the determination, if a phase change of the spindle motor or a load of the indexing motor occurs, comparing previously stored data with the current phase change amount of the spindle motor or load amount of the indexing motor; and a step of automatically detecting whether orientation deviation occurs before and when replacing the milling holder according to the confirmation result, judgment result, and/or comparison result.

In addition, in another preferred embodiment of the method for detecting orientation deviation of the turret according to the present invention, the method for detecting orientation deviation of the turret may further include the step of generating an alarm when orientation deviation occurs according to the detection result after the detection step. there is.

The turret orientation deviation detection device and detection method according to the present invention operates so that the fix part is horizontal to the drive shaft, and primarily detects orientation deviation according to the sensing result of the sensing part and whether the fix part is operating normally before replacing the milling holder. Even if the detection result determines normal operation, when replacing the milling holder, orientation deviation is additionally detected and an alarm is generated depending on the phase change of the spindle motor and/or overload of the indexing motor to prevent damage or destruction of tools or equipment. It has the effect of reducing maintenance costs and time.

In addition, the turret orientation deviation detection device and detection method according to the present invention continuously and automatically detects orientation deviation before and during tool exchange in the milling holder, thereby improving the stability and reliability of machine tools and maximizing consumer satisfaction. There is an effect that can be done.

Moreover, the device and detection method for detecting misalignment of the turret according to the present invention are mounted so that the fixing part is horizontal to the driving shaft, so that the sensing part and the fixing part can be checked easily and quickly before replacing the milling holder, thereby promoting miniaturization of the turret. This has the effect of maximizing space utilization, improving worker convenience, and preventing safety accidents.

In addition, the turret orientation deviation detection device and detection method according to the present invention accurately and quickly detects orientation deviation in various stages and generates an alarm, thereby improving productivity by reducing non-processing time and maximizing processing precision. There is a possible effect.

Figure 1 shows a conceptual diagram of the occurrence of orientation distortion when replacing a milling tool of a conventional turret.
Figure 2 shows a perspective view of the turret orientation deviation detection device according to the present invention.
Figure 3 shows a side view of the turret orientation deviation detection device according to the present invention.
FIG. 4 shows a cross-sectional view taken along line AA of FIG. 3.
Figure 5 shows a conceptual diagram showing a state in which the sensing unit and the fixing unit of the turret orientation deviation detection device according to an embodiment of the present invention are operating normally.
Figure 6 shows a configuration diagram of the control unit of the turret orientation deviation detection device according to an embodiment of the present invention.
Figure 7 is a conceptual diagram showing a state in which the sensing unit and the fixing unit of the turret orientation deviation detection device according to an embodiment of the present invention are not operating normally.
Figure 8 shows a conceptual diagram of a state in which orientation deviation occurs due to a phase change of the spindle motor of the turret orientation deviation detection device according to an embodiment of the present invention.
Figures 9 and 10 show a conceptual diagram of a state in which orientation deviation occurs due to overload of the indexing motor of the device for detecting orientation deviation of the turret according to an embodiment of the present invention.
Figure 11 shows a procedure diagram of a method for detecting misorientation of a turret according to an embodiment of the present invention.

Hereinafter, the turret orientation deviation detection device and detection method according to an embodiment of the present invention will be described in detail with reference to the drawings. The embodiments introduced below are provided as examples so that the idea of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. Also, in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. These embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is provided. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of explanation.

The terminology used herein is for describing embodiments and is therefore not intended to limit the invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements. or does not rule out addition.

Figure 2 shows a perspective view of the turret orientation deviation detection device according to the present invention, and Figure 3 shows a side view of the turret orientation deviation detection device according to the present invention. Figure 4 shows a cross-sectional view taken along line A-A of Figure 3, Figure 5 shows a conceptual diagram of the sensing unit and fixing unit of the turret orientation deviation detection device according to an embodiment of the present invention in a normally operated state, and Figure 6 shows the present invention. Shows a configuration diagram of the control unit of a turret orientation deviation detection device according to an embodiment of the present invention. Figure 7 shows a conceptual diagram of a state in which the sensing unit and the fixing unit of the device for detecting orientation deviation of the turret according to an embodiment of the present invention are not operating normally, and Figure 8 shows the detection of orientation deviation of the turret according to an embodiment of the present invention. It shows a conceptual diagram of a state in which orientation deviation occurs due to a phase change in the spindle motor of the device. Figures 9 and 10 show a conceptual diagram of a state in which orientation deviation occurs due to overload of the indexing motor of the device for detecting orientation deviation of the turret according to an embodiment of the present invention. Figure 11 shows a procedure diagram of a method for detecting misorientation of a turret according to an embodiment of the present invention.

The definitions of terms used below are as follows. “Horizontal direction” refers to the horizontal direction in the same member, that is, the 1 to 3 and 7 to 8, and “height direction” refers to the height direction in the same member while being perpendicular to the horizontal and vertical directions, that is, the Z-axis direction in FIGS. 1 to 3 and 8 to 9. means. In addition, upward (upper) refers to the upward direction in the "height direction", that is, the direction toward the top of the Z axis in Figures 1 to 3 and Figures 8 to 9, and downward (lower) refers to the downward direction in the "height direction". , That is, it means the direction pointing downward along the Z axis in FIGS. 1 to 3 and FIGS. 8 to 9. In addition, "inner circumference (inside)" refers to the side relatively close to the center of the same member, that is, the inside in Figures 2 to 10, and "outer circumference (outside)" refers to the side relatively far from the center of the same member, that is, the side in Figure 3. refers to the outside in Figure 9.

Referring to FIGS. 2 to 10, a device for detecting orientation deviation of a turret according to the present invention will be described. As shown in FIGS. 2 to 10, the turret orientation deviation detection device according to an embodiment of the present invention includes a tool post body 100, a tool post 200, an indexing motor 300, a spindle motor 400, It includes a drive shaft 500, a clutch shaft 600, a sensing unit 700, a fix unit 800, a control unit 900, and/or a cam 1000.

The tool post body 100 is installed on a part of the body of the machine tool not shown in the drawing.

The tool rest 200 accommodates a plurality of tool holders 210, including a milling holder 220 on which a milling tool 221 is mounted, and is installed to be indexable on the tool rest body 100.

This tool holder 200 is arranged with a plurality of tool holders along the circumferential surface of the tool holder with angles divided based on the indexing axis of the tool holder, and among the tool holders, a milling holder equipped with a milling tool is detachably mounted as needed. do.

The indexing motor 300 is installed adjacent to the tool rest and indexes the tool rest. That is, as shown in FIG. 8, the indexing motor indexes the tool rest by generating power to index (rotate) the tool rest at a predetermined angle based on the indexing axis of the tool rest.

Accordingly, tool exchange of the turret is performed. This indexing motor may be formed as a built-in motor inside the tool rest body, or may be formed as a hydraulic motor or servo motor.

That is, when tool exchange is necessary depending on the type of tool mounted on the tool holder according to the workpiece processing program, the indexing motor operates under control such as NC to index the tool rest at a predetermined indexing angle to perform tool exchange.

The spindle motor 400 is installed adjacent to the tool rest. That is, as described above, the spindle motor 400 generates power to rotate the milling tool mounted on the milling holder to perform hole, tapping, and milling turning operations by employing a milling spindle for 3-axis machining in a turning center. I order it.

The drive shaft 500 rotates in conjunction with the spindle motor. For example, as shown in FIGS. 2 to 3 and 8, one side of the drive shaft 500 is directly connected to the spindle motor or is connected through a belt or chain, and the drive shaft rotates in conjunction with the spindle motor.

The clutch shaft 600 is installed on the tool rest body to rotate in conjunction with the drive shaft to rotate the milling tool through coupling with the milling holder.

That is, as shown in Figures 2 to 8, the clutch shaft is installed on the tool rest body to rotate in conjunction with the drive shaft, and when it is necessary to use the milling tool of the milling holder, the rotational force of the spindle motor is transmitted to the milling tool to perform milling. Combine with the milling holder to rotate the tool.

Specifically, the clutch shaft is disposed inside the tool rest body, and the drive tang 620 formed on the other side of the clutch shaft is complementary to the holder tang 222 of the milling holder.

In addition, one side of the clutch shaft is installed to couple the drive bevel gear 510 and the clutch shaft bevel gear 630 on the other side of the drive shaft.

Accordingly, the drive shaft rotates due to the rotation of the spindle motor, and the rotational force of the drive shaft is transmitted to the bevel gear of the clutch shaft through the drive bevel gear, causing the clutch shaft to rotate, and finally, the holder tang combined with the drive tang rotates to use the milling tool. rotates.

As described above, when changing the milling holder in this 3-axis milling spindle tool rest, the clutch guide and the drive tang of the clutch are aligned in parallel, so that the drive tang of the clutch shaft and the holder tang of the milling holder can be quickly and easily connected without colliding or misconnecting the milling holder. For accurate engagement, the alignment of the drive tang of the clutch shaft and the clutch guide is required.

The sensing unit 700 is installed adjacent to the drive shaft and senses the correct position of the clutch shaft.

The cam 1000 is installed on one side of the drive shaft to face the clutch shaft and rotate in conjunction with the drive shaft. That is, the cam is installed on one side of the drive shaft to rotate in conjunction with the drive shaft, and the dog can be installed in a portion corresponding to the phase of the clutch shaft.

Although not necessarily limited to this, this sensing unit consists of a proximity sensor disposed adjacent to a dog disposed on the other side of the drive shaft or on a cam to be described later coupled to the other side of the drive shaft.

In other words, if the dog rotates by the rotation of the drive shaft or by the rotation of the cam that rotates in conjunction with the drive shaft, and a tool exchange in the milling holder is required depending on the phase of the clutch, the sensing unit checks whether it is in the correct position without orientation deviation. You can check this first.

The fixing unit 800 blocks rotation of the drive shaft for coupling the milling holder and the clutch shaft before replacing the milling holder.

Although not necessarily limited thereto, as shown in FIGS. 2 to 7, the fixing unit according to a preferred embodiment of the present invention includes a housing unit 810 and a cylinder 820 installed to be retractable or withdrawn from the housing unit. .

That is, the fixer according to the present invention is disposed adjacent to the drive shaft so as to be parallel to the drive shaft and operates in a horizontal direction with respect to the drive shaft to block rotation of the drive shaft.

Specifically, in order to block the rotation of the drive shaft, the fixing part protrudes and advances horizontally from the housing part so that the cylinder is adjacent to the drive shaft or cam, so that the cylinder is inserted into the groove of the drive shaft or the groove of the cam and is connected to the drive shaft or cam. Block rotation.

Accordingly, before replacing the milling holder, orientation deviation can be primarily detected by checking whether the clutch shaft is located in the correct position according to the sensing result of the sensing unit and whether the fixing unit is operating normally.

The control unit 900 automatically detects orientation deviation for coupling the milling holder and the clutch shaft.

In other words, the control unit primarily detects orientation deviation according to the sensing result of the sensing unit and whether the fixing unit is operating normally before replacing the milling holder, and even if it is judged to be operating normally as a result of the primary detection, the phase of the spindle motor changes when the milling holder is replaced. And/or orientation deviation is additionally detected depending on whether the indexing motor is overloaded.

Therefore, the turret orientation deviation detection device according to the present invention operates so that the fix part is horizontal to the drive shaft and primarily detects orientation deviation according to the sensing result of the sensing part and whether the fix part is operating normally before replacing the milling holder. As a result, even if operation is judged to be normal, orientation deviation is additionally detected and an alarm is generated depending on the phase change of the spindle motor and/or overload of the indexing motor when replacing the milling holder to prevent and maintain tools or equipment from damage or destruction. It reduces maintenance costs and time, improves the stability and reliability of machine tools, maximizes consumer satisfaction, maximizes space utilization by miniaturizing the turret, improves operator convenience, and prevents safety accidents. By reducing non-processing time, productivity can be improved and processing precision can be maximized.

As shown in FIG. 6, the control unit 900 of the apparatus for detecting orientation deviation of a turret according to an embodiment of the present invention includes a memory unit 910, an analysis unit 920, and a processing unit 930.

The control unit includes NC (numerical control) or CNC (computerized numerical control) and PLC, and various numerical control programs are built in. That is, the control unit is equipped with a spindle motor, indexing motor, fix unit, machining program, drive program, and operation program, and the corresponding program is automatically loaded and operated according to the operation of the control unit. Additionally, the control unit communicates with the indexing motor, spindle motor, sensing unit, fixing unit, and PLC using a predetermined protocol.

In addition, although not shown in the drawings, according to a preferred embodiment of the present invention, the control unit includes a main operation unit, and this main operation unit includes a screen display program and a data input program according to screen display selection, and the screen display program It displays a software switch on the display screen according to the output, recognizes the ON/OFF status of the software switch, and performs the function of issuing input/output commands for machine operation.

In addition, although not necessarily limited to this, the main operating unit is installed on the case or one side of the machine tool and includes various function switches or buttons and a monitor capable of displaying various information.

PLC (Programmable Logic Controller) performs communication with the control unit, indexing motor, spindle motor, sensing unit, and fixing unit according to a prescribed protocol, and performs the function of executing control commands through this communication. In other words, the PLC operates the processing unit, shutter unit, drive unit, etc. according to the numerical control program of the control unit.

In addition, although not shown in the drawing, the control unit of the turret orientation deviation detection device according to the present invention includes a display unit that can improve user or worker convenience by displaying the results of the memory unit, analysis unit, processing unit, and sensing unit in real time. can do. These display units include liquid crystal display (LCD), thin film transistor-liquid crystal display (TFT LCD), organic light-emitting diode (OLED), and flexible display. , a 3D display, or an e-ink display.

In addition, although not necessarily limited to this, the display unit is formed in the form of a touch screen and can be installed on the case or one side of the machine tool to display various function switches or buttons and various information.

The memory unit 910 stores data for automatically detecting orientation deviation for coupling the milling holder and the clutch shaft. This memory unit may be a variety of storage devices such as ROM, RAM, EPROM, flash drive, hard drive, etc., or may be web storage that performs the storage function of the memory unit 310 on the Internet.

The analysis unit 920 analyzes whether orientation deviation occurs according to the data stored in the memory unit, the operating states of the sensing unit, fixing unit, spindle motor, and indexing motor.

The processing unit 930 continues exchanging the milling holder or stops exchanging the milling holder and generates an alarm according to the data stored in the memory unit and the analysis results of the analysis unit.

As shown in FIG. 6, the memory unit 910 of the control unit 900 of the turret orientation deviation detection device according to an embodiment of the present invention includes a basic data storage unit 911, an operation data storage unit 912, and a collection data storage unit 911. It includes a data storage unit 913 and a real-time data storage unit 914.

The basic data storage unit 911 stores tool information, tool holder information, clutch shaft position information, fixing unit operation information, orientation deviation reference value, reference peak value, reference load amount, and data about the processing program.

In addition, the orientation deviation reference value, reference peak value, and reference load amount are automatically stored in the basic data storage by automatically collecting and classifying orientation deviation information and continuously generating new data through machine learning when orientation deviation occurs. You can.

For example, the reference peak value is when the holder tang of the milling holder passes the drive tang of the clutch shaft and the clutch shaft settles into its existing orientation. In this process, the clutch shaft rotates, and the spindle motor rotates along each bevel gear connection part.

In this process, the reference peak values are accumulated as experimental data and stored in the basic data storage, and are continuously updated through machine learning, accurately generated, and automatically stored, thereby improving the accuracy of the experimental data values and improving the accuracy and reliability of control. It can be maximized and the convenience of workers can be promoted.

The operating data storage unit 912 stores data sensed from the sensing unit and data on whether the fixing unit is operating normally.

The collection data storage unit 913 stores data about the current phase of the spindle motor and the load amount of the indexing motor.

The real-time data storage unit 914 stores the analysis results of the analysis unit and the processing results of the processing unit in real time. In addition, the real-time data storage unit also stores the sensing results of the sensing unit and whether the fixing unit is operating normally.

As shown in FIG. 6, the analysis unit 920 of the control unit 900 of the turret orientation deviation detection device according to an embodiment of the present invention includes a confirmation unit 921, a determination unit 922, and a comparison unit 923. ) includes.

The confirmation unit 921 checks whether a primary orientation deviation occurs before replacing the milling holder according to the data stored in the memory unit, the sensing result of the sensing unit, and whether the fixing unit is operating normally.

That is, as shown in Figures 5 and 6, the confirmation unit quickly and accurately determines whether the primary orientation deviation occurs before replacing the milling holder according to the data stored in the basic data storage unit, the sensing result of the sensing unit, and whether the fixing unit is operating normally. Confirm.

That is, as shown in FIG. 5, when the clutch shaft is located in the correct position, a normal signal is generated as a result of the sensing unit, and the fix unit operates normally, operating normally in the horizontal direction in the groove of the cam or the groove of the drive shaft to drive. It can be confirmed that when the rotation of the shaft is blocked, no primary orientation distortion occurs.

However, as shown in Figure 6, if the clutch shaft is not located in the correct position, a normal signal is not generated as a result of the sensing part, and the fixing part also does not operate properly, so that the cam groove or the drive shaft groove is normally horizontally directed. It can be confirmed that the rotation of the drive shaft is not blocked due to the failure to operate, causing a primary misorientation. Accordingly, an alarm can be immediately generated to quickly prevent damage or destruction of the equipment.

Specifically, as shown in Figure 1, in the related art, the fix part operates along the height direction rather than the horizontal direction with respect to the drive shaft, so the sensor does not operate normally or the fix part operates normally when the clutch shaft is not located in the correct position. There may be a possibility that it may be recognized as being damaged, and in fact, despite the fixer operating abnormally in this state, the user recognizes that the clutch shaft is in the correct position and no orientation distortion occurs, and as the milling holder is replaced, the equipment is replaced. There was a problem with it being damaged or broken.

On the other hand, as shown in FIG. 6, the fixing part of the turret orientation deviation detection device according to the present invention is disposed adjacent to the drive shaft so as to be parallel to the drive shaft and operates in a horizontal direction with respect to the drive shaft so that the clutch shaft is positioned at the correct position. Even if the sensing unit malfunctions, the fixing unit does not operate to be inserted into the drive shaft groove or the cam groove, so the primary orientation deviation can be automatically, quickly and accurately detected.

If the orientation deviation does not occur primarily according to the confirmation result of the confirmation unit, the determination unit 922 determines whether the phase change of the spindle motor or the load of the indexing motor occurs through the data stored in the memory unit when the milling holder is replaced.

In other words, even if it is confirmed that the orientation deviation does not occur primarily before the milling holder exchange according to the confirmation result of the confirmation unit, the judgment unit determines the phase change of the spindle motor or the indexing motor through the data stored in the memory unit when the milling holder is exchanged. Additional judgment is made as to whether the load occurs.

If a phase change of the spindle motor or a load of the indexing motor occurs as a result of the decision of the determination unit, the comparison unit 923 compares the data stored in the memory unit with the amount of the phase change of the spindle motor or the load amount of the indexing motor.

In other words, when the phase change of the spindle motor or the load of the indexing motor occurs as a result of the determination of the judgment unit, the comparison unit compares or collects the peak value according to the phase change of the spindle motor stored in the collection data storage and the reference peak value stored in the basic data storage. Compare the load of the indexing motor stored in the data storage with the standard load stored in the basic data storage.

As shown in FIG. 6, the processing unit 930 of the control unit 900 of the apparatus for detecting misorientation of a turret according to an embodiment of the present invention includes a detection unit 931 and an alarm unit 932.

The detection unit 931 automatically detects whether orientation deviation occurs before and when replacing the milling holder according to the data stored in the memory unit and the analysis results of the analysis unit.

That is, as shown in FIG. 8, the detection unit determines that orientation deviation has occurred when the peak value according to the phase change of the spindle motor stored in the collection data storage unit as a result of the comparison of the comparison unit exceeds the reference peak value stored in the basic data storage unit. recognize

In addition, as shown in Figures 9 and 10, when the load amount of the indexing motor stored in the collection data storage unit as a result of the comparison of the comparison unit exceeds the standard load amount stored in the basic data storage unit, it is recognized that orientation deviation has occurred.

The alarm unit 932 generates an alarm when an orientation deviation occurs according to the detection result of the detection unit and stops the operation of the spindle motor and the indexing motor.

Therefore, the turret orientation deviation detection device according to the present invention can accurately and quickly detect orientation deviation in various stages and generate an alarm, thereby improving productivity by reducing non-processing time and maximizing processing precision.

The detection principle of the turret orientation deviation detection device and detection method according to the present invention will be described with reference to FIGS. 2 to 11.

In general, when orientation deviation occurs, first, when slip of the cam or drive shaft occurs based on sensor recognition, second, when slip of the spindle motor pulley or connection part occurs, and third, when internal damage or connection part of the drive shaft occurs. Fourthly, it can occur when the bevel gear connection between the drive shaft and the clutch shaft is damaged or damaged, and fifthly, when the joint between the drive tang of the clutch shaft and the holder tang of the milling holder is damaged or damaged.

As shown in Figures 5 and 7, in the case where five types of orientation deviation occur, the first and second can be detected according to the sensing result of the sensing unit and whether or not the fixing unit is operating normally.

However, as shown in Figure 1, even when the first and second orientation deviations occur, there is a problem in that the fixing unit operates along the height direction and the sensing unit cannot recognize the orientation deviation even when an error occurs.

In contrast, the fixing part of the turret misorientation detection device according to the present invention protrudes and advances horizontally from the housing portion so that the cylinder is adjacent to the drive shaft or cam in order to block the rotation of the drive shaft, so that the cylinder moves into the groove or cam of the drive shaft. It is inserted into the groove and blocks the rotation of the drive shaft or cam.

Accordingly, as shown in FIG. 7, the confirmation unit can primarily detect orientation deviation by checking whether the clutch shaft is located in the correct position according to the sensing result of the sensing unit and whether the fixing unit is operating normally before replacing the milling holder.

In addition, in the conventional turret orientation deviation detection device or detection method or turret, as shown in FIGS. 8 to 10, when the third to fifth orientation deviation occurs, it cannot be accurately and quickly detected, resulting in damage or destruction of the equipment. There were problems in that maintenance costs and time increased, in severe cases, safety accidents occurred, and the stability and reliability of machine tools were significantly reduced.

The turret orientation deviation detection device or detection method according to the present invention detects five types of orientation deviation even when it is confirmed that the sensing part and the fixing part are operating normally as a result of checking the confirmation part before replacing the milling holder. In cases that occur, the third to fifth distortions are additionally checked through the analysis and processing departments when replacing the milling holder.

That is, as shown in FIG. 8, for example, when the drive shaft and gear connection are damaged, the sensing unit and the fixing unit operate normally and the orientation deviation is not initially detected in the confirmation unit, but when the milling holder is replaced, the milling As the holder tang passes the drive tang of the clutch shaft, the clutch shaft rotates due to the collision between the holder tang and the drive tang, and this rotational force is transmitted to the drive shaft and finally to the spindle motor.

The determination unit determines the current phase change of the spindle motor in the collected data storage unit.

Thereafter, the comparison unit compares the spindle motor peak value according to the phase change of the current spindle motor stored in the collection data storage unit with the reference peak value stored in the basic data storage unit.

Afterwards, when the spindle motor peak value according to the phase change of the spindle motor exceeds the reference peak value in the detection unit, the orientation deviation (A) is accurately and quickly detected in the third case as shown in FIG. 8, and a signal is sent to the alarm unit. The alarm unit generates an alarm when replacing the milling holder and blocks the rotation of the spindle motor.

Likewise, the turret orientation deviation detection device or detection method according to the present invention detects five orientations even when it is confirmed that the sensing part and the fixing part are operating normally and no orientation deviation occurs as a result of first checking the confirmation part before replacing the milling holder. In cases where distortion occurs, the third to fifth distortion is additionally checked through the analysis department and processing department when replacing the milling holder.

That is, as shown in FIGS. 9 and 10, for example, when the bevel gear connection of the drive shaft and clutch shaft is damaged, the sensing unit and the fixing unit operate normally and no orientation deviation is initially detected in the confirmation unit. When replacing the milling holder, when the tool table rotates due to the operation of the indexing motor, the drive tang of the clutch shaft and the holder tang of the milling holder collide, and the collision causes an overload in the indexing motor.

Accordingly, the determination unit determines whether the current indexing motor load occurs in the collected data storage unit.

Thereafter, the comparison unit compares the current load of the indexing motor stored in the collection data storage unit with the reference load value of the indexing motor stored in the basic data storage unit.

Afterwards, when the indexing motor load due to an increase in the load of the indexing motor in the detection unit exceeds the standard load of the indexing motor, the orientation deviation is accurately and quickly detected in the fourth case as shown in Figures 9 and 10, and a signal is sent to the alarm unit. Therefore, the alarm unit generates an alarm when replacing the milling holder and blocks the rotation of the indexing motor.

In this way, the turret orientation deviation detection device according to the present invention detects the first and second cases in the judgment section when replacing the milling holder, even when the confirmation section determines that the sensing section and the fixing section are operating normally before replacing the milling holder. In addition, by additionally detecting the occurrence of orientation deviation through the remaining cases, it is possible to prevent damage or destruction of tools or equipment, reduce maintenance costs and time, improve the stability and reliability of machine tools, and maximize consumer satisfaction.

A method for detecting misorientation of a turret according to the present invention will be described with reference to FIG. 11. As shown in Figure 11, the method for detecting orientation deviation of the turret according to the present invention includes a data storage step (S1), a fix unit operation and sensing step (S2), a confirmation step (S3), a judgment step (S4), and a detection step ( S6), and an alarm step (S7). In each step, the detection process, detection principle, configuration, and contents of the turret orientation deviation detection device and detection method are the same as those of the turret orientation deviation detection device in the specification of the present invention, and hereinafter, turret orientation deviation detection will be described with reference to FIG. 11. The unique features of the detection method are explained with emphasis.

Stores data to automatically detect orientation deviation for combination of milling holder and clutch shaft.

After the data storage step (S1), the fixing unit operates and senses the correct position of the clutch shaft before replacing the milling holder.

After the fix part operation and sensing step (S2), whether the primary occurrence of orientation deviation is checked before replacing the milling holder according to the pre-stored data, sensing results, and whether the fix part operates normally. In other words, before exchanging the milling holder, the confirmation unit checks whether or not the primary orientation deviation occurs according to the sensing result of the sensing unit and whether the fixing unit is operating normally. As a result of confirmation, if orientation deviation occurs, an alarm is generated through the alarm unit and exchange of the milling holder is stopped.

After the confirmation step (S3), if the orientation deviation does not occur primarily according to the confirmation result, whether the phase change of the spindle motor or the load of the indexing motor occurs is determined through previously stored data when replacing the milling holder. In other words, if the orientation deviation does not occur primarily according to the confirmation result in the judgment unit, it is additionally determined whether the phase change of the spindle motor or the load of the indexing motor occurs through the previously stored data when the milling holder is replaced.

After the judgment step (S4), if the phase change of the spindle motor or the load of the indexing motor occurs as a result of the judgment, the previously stored data is compared with the current phase change amount of the spindle motor or the load amount of the indexing motor. That is, when the phase change of the spindle motor or the load of the indexing motor occurs as a result of the determination of the determination unit, the comparison unit compares the peak value of the spindle motor and the load amount of the indexing motor.

After the comparison step (S5), it is automatically detected whether orientation deviation occurs before and when replacing the milling holder according to the confirmation result, judgment result, and/or comparison result.

After the detection step (S6), if orientation deviation occurs according to the detection result, an alarm is generated.

In this way, the method for detecting orientation deviation of the turret according to the present invention operates so that the fix part is horizontal to the drive shaft, and primarily detects orientation deviation according to the sensing result of the sensing part and whether the fix part is operating normally before replacing the milling holder. As a result, even if operation is judged to be normal, orientation deviation is additionally detected depending on the phase change of the spindle motor and/or overload of the indexing motor when replacing the milling holder, and an alarm is generated at each stage to prevent damage or destruction of tools or equipment. prevention and reduce maintenance costs and time. The stability and reliability of machine tools can be improved, productivity can be improved by reducing non-processing time, and processing precision can be maximized.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those skilled in the art will understand the present invention as described in the patent claims to be described later. It will be understood that the present invention can be modified and changed in various ways without departing from the spirit and technical scope. Therefore, the technical scope of the present invention should not be limited to what is described in the detailed description of the specification, but should be defined by the scope of the patent claims.

100: Tool rest body
200: Tool stand
300: Indexing motor
400: Spindle motor
500: Drive shaft
600: Clutch shaft
700: Sensing unit
800: fix part
900: Control unit
1000: Cam

Claims (12)

Tool rest body;
A tool rest that accommodates a plurality of tool holders including a milling holder equipped with a milling tool and is indexable installed on the tool rest body;
An indexing motor installed adjacent to the tool rest and indexing the tool rest;
A spindle motor installed adjacent to the tool rest;
A drive shaft that rotates in conjunction with the spindle motor;
A clutch shaft installed on the tool rest body to rotate in conjunction with the drive shaft to rotate the milling tool through engagement with the milling holder;
A sensing unit installed adjacent to the drive shaft to sense the correct position of the clutch shaft; and
A control unit that automatically detects orientation deviation for coupling the milling holder and the clutch shaft. A device for detecting orientation deviation of a turret, comprising a.
According to paragraph 1,
A fixing unit that blocks rotation of the drive shaft for coupling the milling holder and the clutch shaft before replacing the milling holder. A device for detecting misorientation of a turret, comprising:
According to paragraph 2,
The control unit primarily detects orientation deviation according to the sensing result of the sensing unit and whether the fixing unit is operating normally before replacing the milling holder, and even if it is determined to be in normal operation as a result of the primary detection, the spindle motor A device for detecting orientation deviation of a turret, characterized in that it additionally detects orientation deviation according to a phase change and/or whether an overload of the indexing motor occurs.
According to paragraph 2,
The fixing unit is disposed adjacent to the drive shaft so as to be parallel to the drive shaft and operates in a horizontal direction with respect to the drive shaft to block rotation of the drive shaft.
According to paragraph 3,
The control unit,
a memory unit that stores data for automatically detecting orientation deviation for coupling the milling holder and the clutch shaft;
an analysis unit that analyzes whether orientation deviation occurs according to the data stored in the memory unit, the operating states of the sensing unit, the fix unit, the spindle motor, and the indexing motor; and
A processing unit that continues to exchange the milling holder or stops replacing the milling holder and generates an alarm according to the data stored in the memory unit and the analysis result of the analysis unit.
According to clause 5,
The memory unit,
A basic data storage unit that stores data on tool information, tool holder information, clutch shaft position information, fixing unit operation information, orientation deviation reference value, reference peak value, reference load amount, and machining program;
an operating data storage unit that stores data sensed from the sensing unit and data on whether the fix unit is operating normally;
a collection data storage unit that stores data on the current phase change of the spindle motor and the load amount of the indexing motor; and
A real-time data storage unit that stores the analysis results of the analysis unit and the processing results of the processing unit in real time. A turret orientation deviation detection device comprising a.
According to clause 6,
The orientation deviation reference value, reference peak value, and reference load amount are automatically stored in the basic data storage by automatically collecting and classifying orientation deviation information and continuously generating new data through machine learning when orientation deviation occurs. A device for detecting turret orientation deviation.
According to clause 5,
The analysis unit,
a confirmation unit that checks whether a primary orientation deviation occurs before replacing the milling holder according to the data stored in the memory unit, the sensing result of the sensing unit, and whether the fix unit is operating normally;
A determination unit that determines whether a phase change of the spindle motor or a load of the indexing motor occurs through data stored in the memory unit when the milling holder is replaced when the orientation deviation does not occur primarily according to the confirmation result of the confirmation unit; and
A comparison unit that compares the data stored in the memory unit with the phase change amount of the spindle motor or the load amount of the indexing motor when the phase change of the spindle motor or the load of the indexing motor occurs as a result of the determination of the determination unit. A device for detecting turret orientation deviation.
According to clause 5,
The processing unit,
a detection unit that automatically detects whether orientation deviation occurs before and when replacing the milling holder according to the data stored in the memory unit and the analysis results of the analysis unit; and
An alarm unit that generates an alarm when an orientation deviation occurs according to a detection result of the detection unit.
According to paragraph 2,
A cam installed on one side of the drive shaft to face the clutch shaft so as to rotate in conjunction with the drive shaft.
Saving data for automatically detecting orientation deviation for combination of a milling holder and a clutch shaft;
A step of operating the fixing unit and sensing the correct position of the clutch shaft before replacing the milling holder;
Checking whether a primary misorientation occurs before replacing the milling holder according to pre-stored data, sensing results, and whether the fixing unit is operating normally;
If the orientation deviation does not occur primarily according to the confirmation result, determining whether the phase of the spindle motor or the load of the indexing motor occurs through pre-stored data when replacing the milling holder;
As a result of the determination, if a phase change of the spindle motor or a load of the indexing motor occurs, comparing previously stored data with the current phase change amount of the spindle motor or load amount of the indexing motor; and
A method for detecting orientation deviation of a turret, comprising automatically detecting whether orientation deviation occurs before and when replacing the milling holder according to the confirmation result, judgment result, and/or comparison result.
According to clause 11,
After the detection step,
A method for detecting orientation deviation of a turret, further comprising: generating an alarm when orientation deviation occurs according to a detection result.

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