KR20200000680A - CNC machine and controlling method thereof - Google Patents

Abstract

A complex CNC machine of the present invention comprises: a left die and a right die capable of being moved forward and backward while being horizontally installed on a body frame alongside each other, and each having a front end jig and a rear end jig provided on an upper surface thereof to mount a workpiece so that a total of four workpieces are mounted thereon; a front rack and a rear rack installed back and forth alongside each other while being erected across upper portions of the left and right dies; a main workbench and a sub-workbench respectively provided on the front rack and the rear rack to be able to move from left to right, and respectively having spindle heads capable of being raised and processing the workpieces; and a processing control unit controlling the front and back positions of the left and right dies and the front and back positions of the main and sub-workbenches so that the four workpieces mounted on the left and right dies are selectively positioned on lower portions of the main and sub-workbenches, performing control so that the four workpieces are sequentially processed by the main and sub-workbenches. According to the present invention, as a continuous complex machining process can be carried out sequentially and simultaneously by one machine to minimize loading/unloading of the workpieces, thereby significantly reducing processing time and minimizing the failure rate, and greatly increasing the overall work productivity through reducing a work area, minimizing maintenance, and reducing labor costs.

Description

Complex CNC machine and its control method {CNC machine and controlling method

The present invention relates to a complex CNC machine and a process control method thereof, and in particular, a multi-CNC machine and its machining which can improve work precision and productivity by shortening the machining time of a multi-process workpiece and simplifying the machining process through multi-axis control. It relates to a control method.

In general, a CNC (Computer Numerical Control) machine is a device for automatically machining a workpiece by input numerical control program.

This CNC machine is precisely controlled to the desired shape by controlling the operation according to the program that the spindle of spindle is combined with machining tools such as drill, reamer, tap, etc. Automatic processing.

By the way, the conventional CNC machine is subjected to the first main process and subsequent sub-processes, that is, the machining is performed sequentially while replacing the machining tool for each process during the machining of the workpiece undergoing a multi-step process, depending on the workpiece The processing operation is carried out by moving the processing machine for each process, the processing time is delayed, there is a problem that the overall work precision and work productivity is deteriorated by the complexity of the machining work.

Meanwhile, in order to overcome this problem, a conventional CNC machine having multiple axes, such as three axes and four axes, has been manufactured. However, the configuration is complicated and the manufacturing is difficult. In particular, it is not an individual control configuration of the spindle. Only simultaneous machining of the same process is possible, but there is a limitation in efficient machining of a workpiece that passes through multiple processes, which makes it difficult to use various applications.

Patent No. 10-0929055: CNC Composite Lathe Patent Registration No. 10-1378668: CNC Machine Tool Apparatus

The present invention is proposed in order to solve the conventional problems, an object of the present invention is configured to be able to sequentially and simultaneously process a workpiece having a multi-step through multi-axis control, a composite that can improve the work precision and work productivity It is to provide a CNC machine and its process control method.

As a problem solving means of the present invention for achieving the above object,

Side by side on the main frame is installed side by side and can be moved back and forth, each upper surface is provided with a leaflet jig and a rear end jig on which the workpiece is mounted, the left die and the right die, a total of four workpieces are mounted, the left die and the right A front rack and a rear rack which are installed to cross the upper part of the die and installed side by side back and forth, respectively, are installed on the front rack and the rear rack so as to be movable left and right, respectively, and a spindle head for processing a workpiece is provided for lifting. By controlling the front and rear positions of the main die and the sub die, the left die and the right die, and the left and right positions of the main die and the sub die, the four workpieces mounted on the left die and the right die are divided into the main die and the sub die. By selectively positioning at the lower part of the air table, four workpieces can be processed sequentially by the main processing unit and the sub processing unit. The composite CNC machine comprising a control unit for the lock control processing is started.

In addition, as a problem solving means of the present invention,

The first work mounted on the rear end jig of the left die by the main workbench is first processed, and the left die is moved and controlled rearward, so that the first work piece is located under the sub workbench and is attached to the leaflet of the left die. The second work piece is placed in the lower part of the main workbench, the first work piece is subsequently processed by the sub workbench, and the second work piece is first processed by the main workbench, and the left die is The main workbench is moved to the right while being further moved to the rear, and the second work piece is located under the sub workbench, and the third work piece mounted on the rear end jig of the right die is located under the main workbench; The second workpiece is subsequently processed by the sub-workbench, the third workpiece is firstly processed by the main workbench, and the right die is moved backwards. The V work bench is controlled to move to the right so that the third work piece is located at the bottom of the sub work table and the fourth work piece mounted on the leaflet of the right die is located at the bottom of the main work table. The third work is subsequently processed, the fourth work is first processed by the main workbench, the right die is further moved to the rear, and the main workbench is moved to the left to control the fourth work. The new first workpiece of the left die, which is located at the bottom of the workbench and returned to the original position, is located at the bottom of the main workbench, and the fourth workpiece is subsequently processed by the subworker, Disclosed is a process control method for a composite CNC machine including a first process of a first workpiece.

According to the composite CNC machine and the machining control method according to the present invention,

Independent control of a pair of right and left work dies and main and sub-processing units allows the continuous multi-tasking process to be carried out sequentially and simultaneously on a single machine, greatly reducing machining time by minimizing the loading and unloading of workpieces. Can be minimized, and the overall work productivity can be greatly improved by reducing the work area, minimizing maintenance, and reducing labor costs.

In addition, it is noted that in addition to the effects specifically specified as described above, unique effects that can be easily derived and expected from the characteristic configuration of the present invention can also be included in the effects of the present invention.

1 is a view illustrating a composite CNC machine according to the present invention in a side direction,
Figure 2 illustrates a complex CNC machine according to the invention in the front direction, except for the front rack is a view illustrating only one rear rack,
3 is a flowchart of a machining control method according to a first embodiment of the present invention;
4 to 8 are views illustrating a sequential machining process in the planar direction by the machining control method according to FIG.
9 is a flowchart of a machining control method according to a second embodiment of the present invention;
10 to 14 are views illustrating a sequential machining process in the planar direction by the machining control method according to FIG. 9.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the composite CNC machine and its processing control method according to the present invention.

This embodiment is provided to more completely explain the present invention to those having ordinary skill in the art, the shape, size, spacing of the elements of the elements in the accompanying drawings to highlight more clearly described. It should be noted that this may be reduced or exaggerated.

In addition, in describing an embodiment, when a component is described as being “equipped”, “formed”, “installed”, “coupled”, or “connected” to another component, it is directly related to the other component. It may be provided, formed, installed, coupled, connected, but it will be understood that other components may exist in the middle.

In addition, in the description of the embodiments, if it is determined that the technical features of the present invention may be unnecessarily obscured as a matter already known to those skilled in the art, such as known functions or known configurations, the details of the embodiments will be described in detail. The description will be omitted.

1 to 2 shows a composite CNC machine according to an embodiment of the present invention, as illustrated in the drawings, a composite CNC machine 100 according to an embodiment of the present invention (hereinafter, referred to as “CNC”). Machine ”) is a main frame 10, a left die 20a and a right die 20b, a front rack 30a and a rear rack 30b, a main workbench 40a and a subworkbench. 40b and a process control part.

Referring to each component constituting the present invention in detail, first, the main body frame 10 functions as a main body supporting other components while forming the overall frame of the CNC machine 100 according to the present invention.

In the main body frame 10, a transfer means such as an LM guide has a front and rear direction for front and rear movement of the left die 20a and the right die 20b, and for adjusting the front and rear positions of the front rack 30a and the rear rack 30b. Is installed.

Next, the left die 20a and the right die 20b are portions in which a workpiece to be processed is mounted and fixed.

The left die 20a and the right die 20b are spaced apart from each other in the left and right directions and are installed side by side, and are movable in the front and rear directions along the LM guide 22 provided in the main body frame 10.

In addition, the left die 20a and the right die 20b are not moved together in conjunction with each other, and the back and forth movements are independently controlled by the machining control unit to be described later.

The upper surface of each of the left die 20a and the right die 20b is provided with a jig to which a workpiece is mounted and fixed, respectively, which is provided with a rear end jig 21a provided at the rear side and a leaflet jig 21b provided at the front side. ), A pair is provided.

Accordingly, two workpieces are mounted on the rear end jig 21a and the leaflet jig 21b provided on the left die 20a, and the rear end jig 21a and leaflet jig 21b provided on the right die 20b. Since two workpieces are mounted on the four dies, a total of four workpieces M1, M2, M3, and M4 can be simultaneously mounted on the entire left die 20a and the right die 20b.

Next, the front rack (30a) and the rear rack (30b) are installed side by side in the front and rear direction spaced apart from each other while standing to cross the upper portion of the left die (20a) and the right die (20b).

The front rack (30a) and the rear rack (30b) can be adjusted in the front and rear direction along the LM guide 31 provided in the main body frame 10, and the front and rear position adjustment by the machining control unit, respectively, when processing the workpiece It is controlled independently.

Next, the main workbench 40a and the sub-workbench 40b are parts for processing the work, the main workbench 40a performs the primary processing of the main process on the work piece, and the sub-workbench 40b has one. Subsequent machining of the subprocess is carried out on the workpiece with the finished machining.

The main workbench 40a is installed in the front rack 30a, and is installed to be movable left and right along the LM guide 41, and the sub-workbench 40b is installed in the rear rack 30b. It is installed to move left and right along the LM guide 41, the left and right movement is controlled independently from the front rack (30a) and the rear rack (30b) by the machining control unit during the machining of the workpiece.

The main processing stage 40a and the sub-processing stage 40b are provided with spindle heads 50a and 50b respectively rotating the high speed while the processing tool T is coupled to process the workpiece.

The spindle heads 50a and 50b are installed to be elevated up and down along the LM guide 51 provided perpendicularly to the main workbench 40a and the sub workbench 40b, respectively. Up and down lifting and operation are controlled independently.

Here, in the case of the subsequent processing by the sub-processing table 40b, since the processing of the detailed shape for the workpiece is mainly performed, the replacement of the processing tool T may be required, and thus one side of the sub rack 30b. It is preferable that a tool changer 60 is installed to automatically replace the machining tool with the spindle head 50b of the sub-workbench 40b while a plurality of machining tools are mounted.

Next, the machining control unit (not shown) controls the overall operation of the CNC machine 100 according to the present invention according to the control logic programmed to process the mounted workpiece.

That is, the machining control unit controls the front and rear positions of the left die 20a and the right die 20b, and controls the left and right positions of the main workbench 40a and the sub-workbench 40b, so as to control the left die 20a. And four workpieces M1, M2, M3, and M4 mounted on the right die 20b are selectively positioned below the main processing stage 40a and the sub-processing stage 40b.

In addition, if four workpieces are selectively positioned below the main workbench 40a and the subworkbench 40b through the position control, the position adjustment of the front rack 30a and the rear rack 30b and the spindle head ( By controlling the lifting and driving of 50a and 50b, the primary or subsequent machining of the main workbench 40a and the subworkbench 40b for the four mounted workpieces M1, M2, M3 and M4 is sequentially performed. And it is controlled to be made at the same time.

The process in which the four workpieces M1, M2, M3, and M4 are processed by the control of the machining control unit may be more clearly understood through a detailed description of the machining control method described later.

3 is a flowchart illustrating a machining control method according to a first embodiment of the present invention, and FIGS. 4 to 8 are views illustrating a sequential machining process according to the flowchart in a planar direction.

Referring to FIG. 4, for processing, a workpiece is mounted on the rear end jig 21a and the leaflet 21b of each of the left die 20a and the right die 20b, so that a total of four workpieces M1 and M2 are provided. , M3, M4) are mounted.

Here, in this embodiment, the workpiece mounted on the rear end jig 21a of the left die 20a is the first workpiece M1, and the workpiece mounted on the leaflet 21b of the left die 20a is the second workpiece. (M2), the workpiece mounted on the rear end jig 21a of the right die 20b, the third workpiece M3, and the workpiece mounted on the leaflet 21b of the right die 20b, the fourth workpiece M4. This is defined as.

In the state where the four workpieces M1, M2, M3, and M4 are mounted as described above, the first workpiece M1 is first processed by the main work bench 40a as illustrated in FIG. 4 (S110). ) Proceeds.

That is, in this step (S110) is driven after the main head (50a) of the main workbench 40a installed in the front rack (30a) is lowered, the main work for the first workpiece (M1) located below the main workbench (40a) Primary processing of the process.

When the first machining of the first workpiece M1 is completed as described above, the step S120 of changing the position by moving the left die 20a backward is performed.

When the left die 20a is controlled to move backward in the step S120, as illustrated in FIG. 5, the first workpiece M1 having completed the primary processing is the sub-processing stand 40b installed in the rear rack 30b. ) And the second workpiece (M2) is located below the main processing stage 40a installed in the front rack (30a).

After the left die 20a is position-controlled as described above, the first workpiece M1 is subsequently processed by the sub-processing stand 40b and the second workpiece M2 is first processed by the main work bench 40a. Step S130 proceeds.

That is, in this step (S130), the processing of the subsequent process for the first workpiece M1 and the processing of the first process for the second workpiece M2 are simultaneously performed.

Then, when the processing in the step (S130) is completed, the step (S140) for changing the position by moving the left die 20a further to the rear and then moving the main processing stage 40a to the right (S140).

According to the movement control in this step S140, as illustrated in FIG. 6, the second workpiece M2 having completed the primary processing is positioned under the sub-processing stand 40b, and the third workpiece M3 is located. It is located below the main processing stage (40a).

After the position control of the left die 20a and the main workbench 40a is performed, the second work piece M2 is subsequently processed by the sub workbench 40b and the third work piece M3 is carried out by the main workbench 40a. This primary processing step (S150) proceeds.

That is, in this step (S150), the processing of the subsequent process for the second work M2 and the processing of the first process for the third work M3 are simultaneously performed.

Here, in the process of the steps (S140, S150), the first workpiece (M1) is completed from the left die 20a, the first workpiece (M1) is completed from the first and subsequent machining process, the first workpiece to be newly processed ( M1) may be mounted on the rear end jig 21a of the left die 20a again.

Subsequently, when the processing in the step S150 is completed, the right die 20b is moved backward and the sub-processing table 40b is moved to the right to change the position (S160).

According to the movement control in the step S160, as illustrated in FIG. 7, the third workpiece M3 having completed the primary processing is positioned under the sub-processing stand 40b, and the fourth workpiece M4 is disposed. It is located below the main processing stage (40a).

After the position control of the right die 20b and the sub workbench 40b, the third work M3 is subsequently processed by the sub workbench 40b and the fourth work M4 by the main workbench 40a. ) Is first processed (S170).

That is, in this step (S170), the processing of the subsequent process for the third work M3 and the processing of the first process for the fourth work M4 are simultaneously performed.

Here, in the process of the present step (S170), the second workpiece M2, which has completed all the processing steps, is also recovered from the left die 20a, and the second workpiece M2 to be newly processed is again left die 20a. After being mounted on the leaflets 21b, the left die 20a is moved forward again to return to its initial home position.

Subsequently, when the processing in step S170 is completed, the right die 20b is moved further to the rear, and the main processing stage 40a is moved to the left to change the position (S180).

According to the movement control in the step S180, as illustrated in FIG. 8, the fourth workpiece M4 having completed the primary processing is positioned below the sub-processing table 40b and newly mounted first workpiece ( M1) is again located below the main processing stage 40a.

After the position control of the right die 20b and the main workbench 40a is carried out, the fourth work piece M4 is subsequently processed by the sub workbench 40b and the new first work piece M4 is made by the main workbench 40a. ) Is first processed (S190).

That is, in this step (S190) the processing of the subsequent process for the fourth workpiece (M4) and the processing of the primary process for the new first workpiece (M1) is in progress at the same time.

Subsequently, the above-described control steps are repeated in the same manner, so that the four processes M1, M2, M3, and M4 are sequentially and simultaneously processed in the first and subsequent processes.

Here, the work of recovering the finished work from the left die 20a and the right die 20b and remounting the new work can be performed manually by an operator, and may also be automated using a robot arm or the like. It is possible.

9 is a flowchart illustrating a machining control method according to a second exemplary embodiment of the present invention, and FIGS. 10 to 14 are diagrams illustrating a sequential machining procedure according to the flowchart.

Referring to FIG. 10, four workpieces are mounted on the rear end jig 21a and the leaflet 21b of each of the left die 20a and the right die 20b for processing. In this embodiment, the workpiece mounted on the rear end jig 21a of the left die 20a is mounted on the first workpiece M1, and the workpiece mounted on the rear end jig 21a of the right die 20b is placed on the second workpiece ( M2), the workpiece mounted on the leaflet 21b of the left die 20a is defined as the third workpiece M3, and the workpiece mounted on the leaflet 21b of the right die 20b is called the fourth workpiece M4. do.

In the state where the four workpieces (M1, M2, M3, M4) is mounted as above, as shown in FIG. 10, the first workpiece M1 is first processed by the main processing stage 40a ( S210) proceeds.

When the first machining of the first workpiece M1 is completed as described above, the step S220 of changing the position is performed by moving the left die 20a to the rear and moving the main workbench 40a to the right.

Then, as illustrated in FIG. 11, the first workpiece M1 having completed the primary processing is positioned below the sub-processing stage 40b and the second workpiece M2 is positioned below the main processing stage 40a. Subsequently, the first work M1 is subsequently processed by the sub-processing stand 40b, and the second work M2 is first processed by the main work bench 40a.

Then, when the processing in the step (S230) is completed, the right die 20b is then moved to the rear, while the main workbench 40a moves to the left, the sub-workbench 40b moves to the right, respectively. The changing step S240 is performed.

Then, as illustrated in FIG. 12, the second workpiece M2 having completed the primary processing is positioned below the sub-processing stage 40b and the third workpiece M3 is positioned below the main processing stage 40a. Accordingly, the second workpiece M2 is subsequently processed by the sub-processing stand 40b, and the third work M3 is first processed by the main processing stand 40a.

Subsequently, when the machining in the step S250 is completed, the left die 20a is further moved backwards, and the sub work bench 40b is moved to the left and the main work bench 40a is moved to the right, respectively. The step of changing (S260) is performed.

Then, as illustrated in FIG. 13, the third workpiece M3 having completed the primary processing is positioned below the sub-processing stage 40b and the fourth workpiece M4 is positioned below the main processing stage 40a. Subsequently, the third workpiece M3 is subsequently processed by the sub-processing stand 40b, and the fourth work M4 is first processed by the main processing stand 40a.

Subsequently, when the processing in the step S270 is completed, the right die 20b is moved further to the rear, and the main processing stand 40a is moved to the left, and the sub-processing stand 40b is moved to the right, respectively. The changing step S280 is performed.

Here, the first workpiece (M1), the second workpiece (M2), the third workpiece (M3) is completed from the left die 20a and the right die (20b) is completed, the new workpiece ( It will be apparent that M1, M2, M3 will be mounted and the left die 20a is moved forward again to return to its original home position.

According to the movement control in the step S280, as illustrated in FIG. 14, the fourth workpiece M4 having completed the primary processing is positioned below the sub-processing table 40b and newly mounted first workpiece ( M1) is again located below the main workbench 40a. Therefore, after the fourth work M4 is subsequently processed by the subworker 40b, the new first work piece (m) is performed by the main workbench 40a. Step S290 in which M4) is first processed is performed.

Subsequently, the above-described control steps are repeated in the same manner, so that the four processes M1, M2, M3, and M4 are sequentially and simultaneously processed in the first and subsequent processes.

As described above, the CNC machine of the present invention can perform a continuous multi-processing process sequentially and simultaneously on a single machine through independent position control of a pair of left and right dies, a main workbench and a sub workbench, thereby greatly reducing the machining time. In addition, it can be seen that the overall productivity of work can be greatly improved by reducing the work area, minimizing maintenance, and reducing labor costs.

Although the preferred embodiments of the present invention have been described in detail above, the technical scope of the present invention is not limited to the contents described in the above-described embodiments and drawings, and may be modified or modified by those skilled in the art. Modified equivalent configuration will be said to be within the scope of the technical idea of the present invention.

Referring to the symbols of the major parts of the accompanying drawings as follows.
10: main frame 20a / b: left die / right die
30a / b: front rack / rear rack 40a / b: main workbench / sub workbench
50a / b: Spindle head 60: Tool changer

Claims (3)

Side by side on the main frame is installed side by side and can be moved back and forth, each upper surface is provided with a leaflet jig and a rear end jig on which the workpiece is mounted, the left and right die on which a total of four workpieces are mounted;
A front rack and a rear rack which are installed to cross the top of the left die and the right die and are installed side by side in front and rear;
A main workbench and a sub-workbench which are respectively installed on the front rack and the rear rack so as to be movable left and right, the main head being capable of elevating a spindle head for processing a work;
By controlling the front and rear positions of the left die and the right die and the left and right positions of the main workbench and the sub workbench, four workpieces mounted on the left die and the right die are selectively positioned under the main workbench and the subworkbench. And a machining control unit for controlling the four workpieces to be sequentially processed by the main processing unit and the sub-processing unit. As a process control method for a composite CNC machine according to claim 1,
Primary processing of the first workpiece mounted on the rear end jig of the left die by the main processing stage;
Moving the left die rearward so that the first work piece is located under the sub-workbench and the second work piece mounted on the leaflet of the left die is located under the main workbench;
The first workpiece is subsequently processed by the sub-workbench, and the second workpiece is firstly processed by the main workbench;
The left die is further moved rearward and the main workbench is controlled to move to the right, so that the second work piece is located under the sub workbench and the third work mounted on the rear end jig of the right die is located at the bottom of the main workbench. Becoming;
The second workpiece is subsequently processed by the sub-workbench, and the third work is primarily processed by the main workbench;
The right die is moved rearward and the sub workbench is controlled to move to the right, so that the third work piece is located at the bottom of the sub workbench and the fourth work piece mounted on the leaflet of the right die is located at the bottom of the main workbench. step;
The third workpiece is subsequently processed by the sub-workbench, and the fourth workpiece is firstly processed by the main workbench;
The right die is further moved rearward and the main workbench is controlled to move to the left, so that the fourth work piece is located at the bottom of the sub workbench and the new first work of the left die is returned to the original position at the bottom of the main workbench. Becoming;
And a fourth process of the fourth workpiece is subsequently processed by the sub-workbench, and a new first workpiece is firstly processed by the main workbench. As a process control method for a composite CNC machine according to claim 1,
Primary processing of the first workpiece mounted on the rear end jig of the left die by the main processing stage;
The left die is moved backwards and the main workbench is controlled to move to the right, so that the first work piece is located under the sub workbench and the second work piece mounted on the rear end jig of the right die is located under the main workbench. ;
The first workpiece is subsequently processed by the sub-workbench, and the second workpiece is firstly processed by the main workbench;
As the right die is moved backwards, the main workbench is moved to the left and the sub workbench is moved to the right, so that the third workpiece mounted on the leaflet of the left die is located at the bottom of the main workbench and the second work is Located at the bottom of the torsion;
The second workpiece is subsequently processed by the sub-workbench, and the third work is primarily processed by the main workbench;
As the left die is further moved to the rear, the sub workbench is moved to the left and the main workbench is moved to the right, so that the third work piece is located at the lower part of the sub workbench, and the fourth work mounted on the leaflet of the right die is main. Located under the workbench;
The third workpiece is subsequently processed by the sub-workbench, and the fourth workpiece is firstly processed by the main workbench;
As the right die is further moved to the rear, the main workbench is moved to the left and the sub workbench is moved to the right, so that the fourth work piece is located below the sub workbench and the new first work of the left die is returned to its original position. Located at the bottom of the main workbench;
And a fourth process of the fourth workpiece is subsequently processed by the sub-workbench, and a new first workpiece is firstly processed by the main workbench.

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