KR101621492B1

KR101621492B1 - Cnc lathe for working annular material

Info

Publication number: KR101621492B1
Application number: KR1020160025551A
Authority: KR
Inventors: 윤상대
Original assignee: (주)연암테크
Priority date: 2016-03-03
Filing date: 2016-03-03
Publication date: 2016-05-16

Abstract

The present invention is characterized in that a material supply unit, a material loading unit and a material take-out unit of a new structure adapted to the processing characteristics of an annular material are installed inside the cover frame so that even when the door of the cover frame is closed, It can be made freely and automatically, thereby improving the productivity. Accordingly, the present invention relates to a CNC lathe for processing an annular material, which can prevent the door from being broken and damaged, and can ensure durability because the door can be opened and closed frequently.

Description

{CNC LATHE FOR WORKING ANNULAR MATERIAL}

The present invention relates to a CNC lathe for machining an annular workpiece, which is a machine tool capable of automatically cutting an annular metal material and fixing it on a fixed chuck, .

In general, a lathe is a machine tool that rotates various metal materials and carries out cutting with a bite. CNC (Computerized Numerical Control) lathe is a numerical data that selectively instructs machining dimensions, shape, necessary tool, It is a kind of machining center where the control device is connected to the shelf to connect the recorded program directly to the computer in real time to automatically determine the position of the cutting tool or perform automatic cutting.

Such a CNC lathe generally has a work space 11 formed therein as shown in FIGS. 1 and 2, a cover frame 10 provided with a door 12 for opening and closing the work space 11 from the outside, A fixing chuck 20 rotatably installed on one side of the inside of the work space 11 of the cover frame 10 for detachably fixing the workpiece M to be processed, And a tool rest 30 on which one or more tools 31 for working the workpiece M fixed to the fixed chuck 20 are moved while moving inside the work space 11. [

The workpiece M to be processed by the CNC lathe may be various items so that the shape of the stationary chuck 20 or the tool 31 mounted on the tool rest 30 can be variously changed or changed have. However, under a mass production system of a specific item, the CNC lathe may be specified in terms of the size of the cover frame 10, the shape of the fixing chuck 20, and the type of the tool 31 mounted on the tool rest 30, .

For example, in a process of processing an annular material such as a ring gear, a bushing, an inner race of a bearing, or an outer race using a general CNC lathe described above, The fixing chuck 20 is rotated and the tool rest 30 is moved so that the bite of the selected tool 31 finishes machining while cutting out the outer periphery or the inner periphery or the front end face of the annular material M.

This will be described in more detail with reference to FIGS. First, as shown in Figs. 3 and 4, the door 12 of the cover frame 10 is opened, and the worker grasps the annular material M to be machined and fixes it to the fixing chuck 20. Next, the door 12 of the cover frame 10 is closed as shown in Fig. 5, and the operator operates the control unit or processes the annular blank M according to the set program. That is, the annular material M, in which the tool rest 30 moves in the work space 11 and the bite of the selected tool 31 rotates while the stationary chuck 20 with the annular material M fixed is rotated, To be cut into a desired shape. 6 and 7, the door 12 of the cover frame 10 is opened after the completion of the machining, and the processed annular material M, which is fixed to the stationary chuck 20, Is taken out to the outside. By repeating the above process, a large amount of annular material M is repeatedly processed.

As can be seen from the above-described process, in order to repeatedly process the annular material M using the CNC lathe, the cover frame 10 The worker must hold the annular material M by hand and fasten it to the fixing chuck 20 or take it out. In this case, if the worker directly grasps or removes the annular material (M) under the automatic mass production system, the worker must always be attached to the CNC lathes, so that it is difficult to ensure the constant continuity of the work as well as the labor cost.

In order to substitute for the manual operation of the operator, as shown in FIG. 8, a material input / output portion 40 for automatically inputting and extracting the annular material M to the front of the door 12 of the cover frame 10 may be separately provided do. That is, instead of the operator's hand, the gripper provided in the material loading / unloading portion 40 grips the workpiece M supplied through the loading box or the conveyor, and moves the cover frame 10 When the door 12 is opened and closed, the annular material M is introduced into or withdrawn from the work space 11. As a conventional technique for such a material input / output unit 40, there is a " automatic workpiece supply < Desc / Clms Page number 2 > In the similar structure, the material loading / unloading portion 40 may be installed at the upper portion of the cover frame 10, which is similar to the "workpiece supply / unloading device of the Sann-seed lathe" of the registered utility model No. 20-0393854.

The CNC lathe according to the prior art can automatically and precisely rotate the annular material M before and after the processing of the annular material M without intervention of the operator through the material input / The productivity can be improved by reducing the labor cost by inserting and withdrawing the material M and ensuring the continuity of the work.

However, even in the case of the conventional CNC lathe as described above, since the material loading / unloading portion 40 is provided outside the cover frame 10, that is, in front of or above the door 12, And the process of opening and closing the door 12 of the cover frame 10 is inevitably accompanied each time it is taken out. The process of opening and closing the door 12 is also a process step, which not only lowers the productivity but also causes frequent breakdown of the door 12 due to repeated opening and closing of the door 12, .

SUMMARY OF THE INVENTION It is an object of the present invention, which is devised to solve the above-mentioned problems, to provide a new structure suitable for processing characteristics of an annular material, so that the supply, loading, unloading, So that it is possible to improve the productivity and to prevent breakdown and damage caused by frequent opening and closing of the door.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

According to an aspect of the present invention, there is provided a CNC lathe for processing an annular material, the CNC lathe having a work space formed therein, a material insertion hole through which an annular material is inserted into an upper portion of the work space, A cover frame provided with a door on a front surface of the work space so as to open and close a space and having a material take-out hole formed in a lower portion of the door, and a cover frame rotatably installed on one side of the inside of the work space of the cover frame, A workpiece table mounted with a tool for processing the annular material fixed to the fixing chuck while moving inside the work space of the cover frame; A material supply unit for guiding the annular material supplied from the material supply hole to be aligned sequentially; A material loading unit installed above the stationary chuck to receive the annular material from the material supply unit and to grip the supplied annular material and fix the annular material to the stationary chuck; And a workpiece take-out unit which is installed on one side of the inside of the door and which takes the annular material from the stationary chuck and takes the annular material out through the workpiece take-out hole of the door toward the front of the door, Wherein one end of the forward rotation is moved from the stationary chuck to the other end of the annular material by the rolling motion, A rotary take-out portion for separating the door from the fixed chuck; And the other end of the annular material extends toward the workpiece take-out hole of the door, and the other end of the annular workpiece extends from the rotation take-out portion of the rotary take- And a fixed take-out portion for rolling out the material through the material take-out hole.

The rotary take-out portion may include a long-shaped take-out guide having a "U" shape with an upper opening on a cross section, a rotary shaft rotating normally and rotatively through a rotary bracket coupled to a side surface of the take- And a rotation drive unit.

The takeout guide may have an opening surface opened on a surface facing the stationary chuck such that the annular material fixed to the stationary chuck is located at the inner end of the stationary chuck, And a protruding surface protruding from the protruding surface is formed.

Further, the takeout guide includes a semicircular balance weight having a rotation axis as a rotation center at a lower portion thereof.

The takeout guide is characterized in that it includes an embossing sheet which is respectively coupled to both inner side surfaces and in which a protruding embossing of fine circular or oval shape is formed.

The rotation driving unit may include a first pinion gear coupled to the rotation shaft through a first one-way clutch bearing, and a second pinion gear coupled to the rotation shaft via a second one-way clutch bearing, A third pinion gear that is gear-connected to an upper portion of the first pinion gear and that is freely rotatable via a third rotating bearing, and a second pinion gear that is gear-connected to an upper portion of the second pinion gear, A fourth pinion gear provided so as to be freely rotatable through a fourth rotary bearing coaxially with the third pinion gear so as not to be interfered with the gear, and a fourth pinion gear which is gear-connected to the third pinion gear, And a second rack gear which is gear-connected to the second pinion gear and is not gear-connected to the fourth pinion gear And a second rack gear which vertically moves up and down.

The rotation driving section is divided into a first lowering state in which the takeout guide is rotated forward when the first rack gear and the second rack gear descend and a second lowering state in which the takeout guide is rotated in a reverse direction, When the first rack gear and the second rack gear are lifted, the take-out guide is maintained in a reverse rotation state.

In addition, the first lowering state is a state in which the first pinion gear is rotated forward while rotating the third pinion gear while the first rack gear is lowered while being connected to the third pinion gear, And the second rack gear is in a state of being lowered in a state in which the second rack gear is not gear connected with the fourth pinion gear, And the take-up guide is rotated in the opposite direction as the second pinion gear is rotated in the reverse direction while the first rack gear is not gear-connected to the first pinion gear And is in a lowered state.

The first one-way clutch bearing transmits rotation force to the rotary shaft during the forward rotation of the first pinion gear, and transmits the rotational force to the first pinion gear, And the second one-way clutch bearing transmits a rotational force to the rotating shaft when the second pinion gear rotates in the reverse rotation direction and does not transmit the rotational force to the rotating shaft during the reverse rotation of the second pinion gear, And the second pinion gear is rotated freely.

And a work loading box fixed to the front of the material taking-out hole of the door and loading the annular material taken out through the material taking-out hole of the door.

The material loading box may include a rectangular box-shaped loading box having one side and an upper side facing each other, facing the material take-out hole of the door, and a loading cover for opening and closing the upper surface of the loading box.

The CNC lathe for processing an annular material according to the present invention is characterized in that a material supply unit, a material loading unit and a material takeout unit of a new structure suitable for processing characteristics of an annular material are provided inside the cover frame, Loading, loading and unloading of the material can be performed freely and automatically, thereby improving productivity. Therefore, it is possible to omit the opening and closing process of the door frequently so that the door can be prevented from being broken and damaged, and durability can be secured.

1 and 2 are perspective views showing a general CNC lathe,
FIGS. 3 to 7 are perspective views illustrating a material processing process of the embodiment of FIGS. 1 and 2,
8 is an actual photograph of a state in which a material loading / unloading unit is installed in front of a door of a conventional CNC lathe,
9 and 10 are perspective views showing an embodiment of a CNC lathe for processing an annular material according to the present invention,
FIG. 11 is a front view of the recessed portion viewed from the inside of the work space on the basis of the embodiment of FIG. 10,
Fig. 12 is a front perspective view showing the inside of the embodiment of Fig. 11,
Figure 13 is a side perspective view of the embodiment of Figure 12,
Fig. 14 is a front perspective view showing the material supply unit in the embodiment of Fig. 12,
Fig. 15 is a front perspective view showing a conveying guide among the material supply units in the embodiment of Fig. 14,
Fig. 16 is a front perspective view showing the alignment guide among the material supply units of the embodiment of Fig. 14,
FIG. 17 is a front perspective view showing a substantial part of the material loading unit in the embodiment of FIG. 12,
Figs. 18 to 22 are front perspective views showing the operation process of the embodiment of Fig. 17,
Figure 23 is a side perspective view of the embodiment of Figure 17,
24-27 are side perspective views illustrating the operation of the embodiment of FIG. 23,
FIG. 28 is a side view showing a process of machining an annular material fixed to a fixing chuck in the embodiment of FIG. 10 with a tool of a tool band,
Fig. 29 is a front view showing the fixed chuck and the workpiece take-out unit in the embodiment of Fig. 10,
30 and 31 are front views showing the operation of the rotary take-out unit in the embodiment of FIG. 29,
32 is a perspective view of the embodiment of Fig. 29,
33 and 34 are perspective views showing the operation of the rotary take-out unit in the embodiment of FIG. 32,
Fig. 35 is a principal perspective view showing a take-out guide of the take-out portion of the embodiment of Fig. 32,
Fig. 36 is a front perspective view showing the recessed portion of the rotary take-out unit among the material takeout units in the embodiment of Fig. 12,
37 is a side perspective view of the embodiment of FIG. 36,
Fig. 38 is a front perspective view showing a take-out guide and a rotation drive portion in the embodiment of Fig. 36,
Fig. 39 is a front view showing the configuration of the rotation driving unit of the embodiment of Fig. 38,
FIG. 40 is a front perspective view showing the first lowering state of the rotary drive unit from the embodiment of FIG. 39,
Fig. 41 is a front view showing the configuration of the rotation driving unit of the embodiment of Fig. 40,
Fig. 42 is a front perspective view showing the second lowering state of the rotary drive unit from the embodiment of Fig. 40,
Fig. 43 is a front view showing the configuration of the rotation driving unit of the embodiment of Fig. 42,
44 to 47 are front views showing a process in which the first rack gear and the second rack gear of the rotary drive unit are lifted from the embodiment of FIG. 42,
48 is a perspective view showing another embodiment of a CNC lathe for processing an annular material according to the present invention,
Fig. 49 is a main part perspective view showing a state in which the work loading box is disassembled from the door in the embodiment of Fig. 48; Fig.

Hereinafter, preferred embodiments of a CNC lathe for processing an annular material according to the present invention will be described in detail with reference to the accompanying drawings.

9 to 49, the CNC lathe according to the present invention includes a cover frame 100, a fixing chuck 200, a tool rest 300, a material supply unit 400, a material loading unit 500, And a material take-out unit 600, and may further include a material loading box 700. [

9 and 10, a cover frame 100 of a CNC lathe CNC lathe according to the present invention is an outer appearance of a machine tool, in which a work space 110 is formed, A door 120 is provided on the front surface of the work space 110 so as to open and close the work space 110 from the outside through the material inlet hole 130 through which the annular material M is inserted, A material take-out hole 121 is formed through the lower portion of the door 120. Various components to be described later are attached to the inside of the work space 110 of the cover frame 100.

The fixing chuck 200 is rotatably installed on one side of the inside of the work space 110 of the cover frame 100, and detachably fixes the annular material M. The tool rest 300 is mounted with a tool 310 for processing the annular material M fixed to the fixing chuck 200 while moving inside the work space 110 of the cover frame 100. The tool frame 300 equipped with the cover frame 100, the fixing chuck 200 and the tool 310 described above is a typical configuration of a CNC lathe, and a detailed description of its detailed configuration and functions will be omitted.

10 and 11, the cover frame 100 may be formed in the shape of a rectangular parallelepiped, as shown in FIGS. 10 and 11, for connection and operation with the material supply unit 400, the material loading unit 500 and the material take- A material injection hole 130 through which the annular material M is inserted is formed in the upper part of the work space 110 and a material extraction hole 121 is formed through the lower part of the door 120. That is, the material injection hole 130 of the cover frame 100 is configured to supply the annular material M to the material loading unit 500 through the material supply unit 400, As described later, the annular material M processed through the material taking-out unit 600 is taken out from the stationary chuck 200 toward the front of the door 120. [

10 to 12 and 14 to 16, the material supply unit 400 is installed in the work space 110 of the cover frame 100 so as to be inclined upward and downward, Thereby guiding the annular material M so that the annular material M is sequentially aligned while rolling. The material supply unit 400 is not provided with a separate power source or power transmission means and is configured such that the annular material M is conveyed and aligned while rolling by its own weight in accordance with the characteristics of the annular material M to be charged, The annular material M is supplied to a material loading unit 500 to be described later.

10 to 13 and 17 to 27, the material loading unit 500 is installed above the stationary chuck 200 to receive the annular material M from the material supply unit 500, And grips the annular material (M) received and fixes it on the fixing chuck (200). Such a material loading unit 500 is provided with a complicated driving means without being provided with a complicated driving means so that the annular material M is received and gripped from the material supply unit 400 by only the upper and lower operation of the single cylinder 520, The annular material M is fixed.

The workpiece takeout unit 600 is disposed between the door 120 of the cover frame 100 and the fixture chuck 200 as shown in Figs. 10 to 12 and 29 to 47 on one side of the inside of the work space 110 And the annular material M is passed from the fixing chuck 200 to roll the annular material M so that the front surface of the door 120 passes through the material extraction hole 121 of the door 120, . The material take-out unit 600 is configured such that the annular material M is taken out while being rolling by its own weight in accordance with the characteristics of the annular material M to be injected first, The annular material M is taken out from the stationary chuck 200 in conjunction with the operation of the cylinder 520 of the material supply unit 500.

More specifically, the material supply unit 400 includes a conveying guide 410 and an alignment slide 420 as shown in FIGS. 10 to 12 and FIGS. 14 to 16, and includes a counter sensor 430, (440) and a warning unit (450).

The transfer guide 410 is protruded so that the upper end thereof is exposed to the outside of the material injection hole 130 of the cover frame 100 and is inclined to the lower end in a zigzag shape. The alignment slide 420 is vertically inclined so that its upper end is connected to the lower end of the conveying guide 410 and its lower end is connected to the material loading unit 500.

A large amount of the annular material M can not be stacked because the space utilization of the linear sorting slider 420 alone is low and the more the annular material M loaded on the alignment slide 420 is, The conveying guide 410 having a zigzag shape is provided. That is, the conveying guide 410 is inclined upwardly and downwardly in a zigzag shape to increase the space utilization, thereby allowing a larger amount of the annular material M to be stacked, and the load of the annular material M stacked in a zigzag shape It is an advantage that it can be dispersed.

The counter sensor 430 is installed in the transport guide 410 and counts the number of the annular materials M to be fed. In other words, it is possible to control the machining operation to be performed by the number of times measured by the counter sensor 430 in accordance with the determined work amount. In particular, although not shown in the drawing, A hopper or the like may be provided to adjust the amount of work according to the counted number from the counter sensor 430.

The proximity sensor 440 is installed on the alignment slide 420 and detects the presence or absence of the annular material M at the pre-installed position. That is, even though the continuous machining operation should be performed, if the further annular material M can not be transferred from the transport guide 410, the machining operation can be stopped. In order to prevent this, a proximity sensor 440 is provided on the alignment slide 420, and the presence or absence of the annular material M is sensed at a pre-installed position to urge the annular material M, which is an object to be processed, . The warning unit 450 receives a signal from the proximity sensor 440 and detects that the annular material M is not present outside the annular material M in the position where the proximity sensor 440 is installed It informs. For example, when the number of the annular materials M aligned on the alignment slide 420 is 30 and the number of the annular materials M is less than 30, the warning unit 450 ) Emits light or sounds to the outside.

On the other hand, a configuration for gripping the annular material M conveyed and aligned by the material supply unit 400 and fixing the annular material M to the fixing chuck 200 for processing is required, which is shown in Figs. 10 to 13 and 17 to 27 Is performed through the material loading unit 500 as shown in FIG. The material loading unit 500 includes a material holding unit 510, a cylinder 520 and a material pushing unit 530. The material holding unit 510 includes an upper holding unit 511, a lower holding unit 512 A spring 513 and an upper chamber 514. The material pushing part 530 may include a pusher 531, a pushing cam 532, and a lifting groove 533. [

17 to 27, the material holding unit 510 is vertically movable up and down above the fixing chuck 200, and moves up and down from the material supply unit 400 to the annular material M, And grips the annular material (M) while moving downward, and then moves toward the fixing chuck (200). The cylinder 520 moves up and down the material holding unit 510 while the material pushing unit 530 moves up and down the material holding unit 510 when the material holding unit 510 is lowered, Pushes the annular blank M toward the fixing chuck 200 so as to be fixed to the fixing chuck 200.

More specifically, the material holding unit 510 includes an upper holding member 511 connected to the cylinder 520 and holding the upper portion of the annular blank M while lifting up and down, A lower holding member 512 slidably coupled to the lower portion of the lower holding member 512 to grip the lower portion of the annular blank M and a lower holding member 512 interposed between the upper holding member 511 and the lower holding member 512, And a spring 513 that provides a spring force such that the grasping member 512 faces the upper grasping member 511. 17, when the upper holding member 511 is positioned at the uppermost position, the annular blank M is positioned between the upper holding member 511 and the lower holding member 512 So that the lower holding member 512 is spaced apart from the upper holding member 511 by a predetermined distance.

The material pushing unit 530 is provided to fix the annular material M gripped by the material gripping unit 510 having the above-described structure to the fixing chuck 200. That is, the material pushing unit 530 includes a pusher 531 that is inserted through the material gripper 510 so as to push the annular material M held by the material gripper 510 and slidably forward and rearward, The pusher 531 is coupled to the other end of the pusher 531 and moves back the pusher 531 when the material gripper 510 is lifted. When the material gripper 510 is positioned at the lowermost position, The pusher 531 is advanced to push the annular material M toward the fixing chuck 200 so that the annular material M gripped by the gripper 510 is fixed to the fixing chuck 200, And a cam 532.

23-27, for pushing the pushing cam 532 forward and backward in accordance with the up-down movement of the material gripper 510, And the pusher 531 is driven by the other end of the pusher 531 in contact with the lower end of the pushing cam 532 so that the pushing cam 532 can move up and down the material gripper 510 The lifting protrusion 532a provided at the center is moved along the lifting groove 533 so as to be able to move up and down together. At this time, the elevating groove 533 is formed with a vertical line 533a from the upper end to the lower end, and a bending line 533b bent at the lower end in the advancing direction of the pusher 531 is formed.

17 and 23, the upper holding member 511 of the material holding unit 510 is separated from the lower holding member 512 by a predetermined distance from the material holding unit 510 The annular material M is supplied between the upper gripping member 511 and the lower gripping member 512. At this time, the pusher 531 of the material pushing unit 530 is in the backward state. 18 and 24, when the workpiece holding portion 510 is lowered by the operation of the cylinder 520, the upper holding member 511 and the lower holding member 512 are brought close to each other by the spring 513, The material M is gripped up and down. At this time, the pushing cam 532 of the material pushing portion 530 moves on the vertical line 533a of the lift groove 533, so that the pusher 531 is still in the backward state. The pushing cam 532 of the material pushing part 530 is moved to the bending line 533b of the lifting groove 533 as shown in Figures 19 and 25 when the material gripping part 510 descends to the fixing chuck 200. [ The annular material M gripped by the material gripper 510 is fixed to the fixed chuck 200 as the pusher 531 advances. Thereafter, as shown in FIGS. 20 and 26, the material holding unit 510 and the material pushing unit 530 are operated to return by the upward movement of the cylinder 520, and as shown in FIGS. 21 and 22, The upper holding member 511 is separated from the lower holding member 512 by a predetermined distance by the upper and lower separation members 514 and the next annular material N is fed from the material supply unit 400 Is supplied.

The annular material M to be processed is fed and aligned from the material supply unit 400 to be supplied to the material loading unit 500 and the annular material M is fixed by the material loading unit 500, (Not shown). 28, the annular blank M fixed to the stationary chuck 200 is machined by the tool 310 in accordance with the movement of the tool rest 300, and is fed to the workpiece take-out unit 600 Out hole 121 of the door 120 from the fixing chuck 200. [0064]

10 to 12, the workpiece take-out unit 600 is installed on one side of the inside of the work space 110 between the door 120 of the cover frame 100 and the fixture chuck 200 , The annular material M is passed from the fixing chuck 200 to roll the annular material M and taken out to the front of the door 120 through the material extraction hole 121 of the door 120 do. More specifically, as shown in FIGS. 29 to 35, the workpiece take-out unit 600 includes a rotation take-out unit 610 and a fixed take-out unit 620.

The rotary take-off part 610 is installed to be rotatable in the forward and reverse directions at a predetermined angle close to the fixed chuck 200, and one end of the forward rotation is passed from the fixing chuck 200 to the annular material M, Moves the material (M) by the rolling motion, and separates the one end from the fixed chuck (200) during the reverse rotation. In the present invention, forward rotation refers to rotation in the counterclockwise direction in the drawing, and reverse rotation refers to rotation in the clockwise direction in the drawing.

The rotation take-out unit 610 is for making one end close to or spaced from the stationary chuck 200 while rotating forward and backward. This is because the annular material M must not be interfered when the annular material M is fixed to the stationary chuck 200 by the above-described material loading unit 500 and the annular material M should not be interfered with the tool 310 during processing Because. However, if the rotation take-out part 610 is connected from the stationary chuck 200 to the workpiece take-out hole 121 of the door 120, the rotation take-out part 610 becomes too long as compared with the height or the length of the work space 110 The annular material M is delivered from the fixed chuck 200 by reducing the rotation interval of the rotary take-out part 610 and the workpiece take-out hole 121 of the door 120 is transferred to the fixed takeout part 620 .

Therefore, the fixed take-out part 620 is fixed to the door 120 of the cover frame 100 in an inclined manner, and one end of the fixed take-out part 620 is connected to the other end of the turn- And the other end is extended toward the workpiece take-out hole 121 of the door 120 so that the annular material M delivered from the rotation take-out part 610 is moved in a rolling motion And is taken out through the material take-out hole 121.

As shown in FIGS. 29 to 35, the rotary take-out unit 610 includes a long-shaped take-out guide 611 having a "U" A rotating shaft 612 rotating in normal and reverse directions via a rotating bracket 612a coupled to a side surface thereof and a rotation driving unit 613 rotating the rotating shaft 612 in normal and reverse directions.

The extraction guide 611 is formed with an opening surface 611a opened on a surface facing the fixing chuck 200 so that the annular material M fixed to the fixing chuck is positioned at the inner side of the fixing chuck, A protruding surface 611b protruding upward can be formed on a surface facing the opening surface 611a. The reason why the opening surface 611a is formed in the extraction guide 611 is to minimize the dropping height of the annular material M fixed to the fixing chuck 200. The protruding surface 611b is formed by the extraction guide 611, To prevent the annular material (M) coming into the inside of the annular material (M) from coming off. The takeout guide 611 may include a semicircular balance weight 611c at the lower portion thereof with the rotation axis 612 as a rotation center, Or to minimize the load applied to the rotary shaft 612 by adjusting the center of gravity.

The takeout guide 611 may include an embossing sheet 611d which is coupled to both inner side surfaces of the take-out guide 611 as shown in Fig. 35, and which has a protruding embossing of fine circular or oval shape. When the coolant injected to prevent deterioration during processing of the annular material M comes into contact with both inner side surfaces of the takeout guide 611, it may contact the annular material M and interfere with rolling motion. In this case, as the contact area with the annular material (M) becomes larger, the surface tension becomes larger and it is easier to prevent rolling motion of the annular material (M), so that the contact area should be minimized. Therefore, the contact area is minimized by the point contact method not by the surface contact with the annular material M by the embossing sheet 611d, thereby preventing the rolling motion of the annular material M from being disturbed.

The rotation drive unit 613 is provided to rotate the rotation shaft 612 of the takeout guide 611 in the forward and reverse directions. The rotation drive unit 613 is not shown in the drawing, The rotation axis 612 of the guide 611 may be rotated in the forward and reverse directions. However, in the present invention, the annular material M can be taken out from the fixed chuck 200 in conjunction with the operation of the cylinder 520 of the material supply unit 500, and the up-and- ) To be rotated.

36 to 47, the rotation driving unit 613 includes a first pinion gear 613a coupled to the rotation shaft 612 via a first one-way clutch bearing 613a ' A second pinion gear 613b coupled to the rotating shaft 612 via a second one-way clutch bearing 613b 'so as not to interfere with the first pinion gear 613a, A third pinion gear 613c which is gear-connected and freely rotatable via a third rotational bearing 613c '; a third pinion gear 613c which is gear-connected to the upper portion of the second pinion gear 613b, And a fourth pinion gear 613d provided so as to be freely rotatable via a fourth rotational bearing 613d 'coaxially with the third pinion gear 613c so as not to interfere with the third pinion gear 613c. The rotation driving unit 613 includes a first rack gear 613e gear-connected to the third pinion gear 613c and vertically moving up and down so as not to be connected to the first pinion gear 613a, And a second rack gear 613f geared up and down together with the first rack gear 613e so as not to be connected to the fourth pinion gear 613d by a gear connection with the pinion gear 613b.

36 to 39, the rotary drive unit 613 is a first pinion gear 613a and a second pinion gear 613b as the rotary gears for directly driving the rotary shaft 612, The gear 613a is connected to the upper and lower gears of the third pinion gear 613c and the second pinion gear 613b is connected to the upper and lower gears of the fourth pinion gear 613d. At this time, the first rack gear 613e is configured to vertically move up and down along one side of the first pinion gear 613a and the third pinion gear 613c, while the third pinion gear 613c is gear- And is not gear-connected to the first pinion gear 613a. For example, as shown in FIG. 39, the third pinion gear 613c may have a larger diameter than the first pinion gear 613a because of a larger number of gear teeth. Alternatively, the first rack gear 613e May be driven away from the first pinion gear 613a. The second rack gear 613f is also vertically moved up and down along one side of the second pinion gear 613b and the fourth pinion gear 613d while the second pinion gear 613b is gear- And is not gear-connected to the fourth pinion gear 613d. The second pinion gear 613b may have a larger diameter than the fourth pinion gear 613d because the number of teeth of the second pinion gear 613b is larger than that of the fourth pinion gear 613d as shown in Figure 39. Also, 613f may be driven away from the fourth pinion gear 613d.

At this time, the first pinion gear 613a and the second pinion gear 613b are rotatably supported on the rotary shaft 612 through a first one-way clutch bearing 613a 'and a second one-way clutch bearing 613b' And the third pinion gear 613c and the fourth pinion gear 613d are rotatably supported on fixed coaxial axes via a third rotation bearing 613c 'and a fourth rotation bearing 613d' . The one-way clutch bearing is a one-way clutch bearing that rotates together with a rotating shaft for either one of forward rotation and reverse rotation but does not transmit rotation to the shaft in the other direction, Axis connecting member. Accordingly, the rotation of the rotary shaft 612 is determined depending on which direction the free-rotating one direction of each of the first and second one-way clutch bearings 613a 'and 613b' is fixed, It can be brought close to or away from the fixed chuck 200 by the forward and reverse rotation.

According to the present invention, the material take-out unit 600 is driven in conjunction with the lifting and lowering of the cylinder 520 of the material loading unit 500, and control is performed so that the annular material M can be taken out when the cylinder 520 is lowered. I want to. The first rack gear 613e and the second rack gear 613f of the rotation driving unit 613 are connected to the cylinder 520 of the material loading unit 500 to move up and down the cylinder 520 Then, it goes up and down together. 40 to 43, when the first rack gear 613e and the second rack gear 613f descend, the rotation driving unit 613 rotates the first guide 611 forward When the first rack gear 613e and the second rack gear 613f are lifted up as shown in FIGS. 44 to 47, when the first rack gear 613e and the second rack gear 613f are lifted The takeout guide 611 maintains the reverse rotation state.

40 and 41, the first rack gear 613e descends while being coupled with the third pinion gear 613c while the third pinion gear 613c is lowered while the first rack gear 613e is gear- And the second rack gear 613f rotates in the forward direction while the first pinion gear 613a rotates in the normal direction so that the rotation shaft 612 rotates in a forward direction and the take- And is in a state in which it is not gear-connected to the pinion gear 613f. 42 and 43, the second rack gear 613f is gear-engaged with the second pinion gear 613b and descends to rotate the second pinion gear 613b in the reverse direction The rotation shaft 612 is rotated in the reverse direction to rotate the takeout guide 611 in a reverse direction and the first rack gear 613e is lowered in a state that the first rack gear 613e is not gear- State.

In order to maintain the forward and reverse rotations of the take-out guide 611 when the first rack gear 613e and the second rack gear 613f are lifted up to the first falling state and the second falling state, 1 and the second one-way clutch bearings 613a ', 613b'. 40 and 41, the first one-way clutch bearing 613a 'transmits rotational force to the rotary shaft 612 during the forward rotation of the first pinion gear 613a, 46 and 47, the first pinion gear 613a freely rotates so as not to transmit a rotational force to the rotating shaft 612 when the first pinion gear 613a rotates reversely. 42 and 43, the second one-way clutch bearing 613b 'transmits rotational force to the rotation shaft 612 when the second pinion gear 613b rotates in the reverse direction, and FIGS. 40 and 41 , 44 and 45, the second pinion gear 613b freely rotates the second pinion gear 613b so as not to transmit a rotational force to the rotation shaft 612 during forward rotation.

When the annular material M is taken out to the front of the door 120 through the material extraction hole 121 of the door 120 by the material extraction unit 600 as described above, And if the annular material M is not received, the annular material M is damaged or tarnished. 48 to 49 so that the annular material M drawn out to the front of the door 120 by the material take-out unit 600 can be stacked thereon.

The material loading box 700 is fixed to the front of the material taking-out hole 121 of the door 120 as shown in FIG. 48, The annular material (M) is loaded inside. More specifically, as shown in FIG. 49, the material loading box 700 includes a rectangular box-shaped loading box 710 having one side face and one side face facing the workpiece take-out hole 121 of the door 120, And a loading cover 720 for opening and closing the upper surface of the loading box 710. When the processed annular material M is sufficiently loaded in the material rack 700, the material rack 700 may be individually emptied or separately connected to the material rack 700 so that the material loaded on the material rack 700 (M) may be added or removed.

Hereinafter, the operation of the CNC lathe for CNC machining according to the present invention will be described with reference to FIGS. 14 to 47, and a repeated description of the above will be omitted.

14 to 16, the annular material M is fed into the feeding guide 410 of the material feeding unit 400 through the material feeding hole 130 and fed to the aligning slide 420 And stored. In this case, the input amount of the annular material M is sensed by the counter sensor 430, and whether or not the annular material M is loaded in an appropriate amount is detected by the proximity sensor 440, Is determined.

At this time, it is assumed that the annular material M processed by the tool 310 of the tool rest 300 is fixed to the fixing chuck 200. The annular material M fixed to the stationary chuck 200 is taken out to the outside through the workpiece take-out hole 121 of the door 120 by the workpiece takeout unit 600, The annular material M is to be fixed to the fixing chuck 200 again for processing. The process of taking out the processed annular material (M) and loading the annular material (M) to be processed into the stationary chuck (200) will be described.

The annular material M is supplied from the material supply unit 400 to the material grip unit 510 of the material loading unit 500 as shown in FIGS. 17 and 23, (531) is in the backward state. At this time, as shown in Figs. 29, 32, 38 and 39, the take-out guide 611 of the material take-out unit 600 is in a reverse-rotated state.

18, when the material holding unit 510 is lowered by the operation of the cylinder 520, the material holding unit 510 moves downward while grasping the annular material M supplied to the material holding unit 510. At this time, when the rotary take-out unit 610 of the material take-out unit 600 becomes the first fall state as shown in Figs. 40 and 41, as shown in Figs. 30 and 33, the take- The one opening surface 611a of the fixed chuck 611 moves toward the front of the fixed chuck 200. At the same time, as shown in FIGS. 31 and 34, the annular material M fixed to the stationary chuck 200 is released from the stationary chuck 200 so that the internal length direction of the takeout guide 611 of the rotary take- And is taken out to the workpiece takeout hole 121 of the door 120 along the fixed takeout part 620 while rolling.

42 and 43, when the rotary take-out unit 610 of the material take-out unit 600 becomes the second lowering state, the take-out guide 611 of the take-out unit 610 rotates in the reverse direction, Is spaced from the front of the fixing chuck 200. [ 19 and 25, when the material loading unit 500 is positioned at the lowermost position and the annular material M to be machined held by the material holding unit 510 pushes the pusher 531 of the material pushing unit 530, As shown in FIG.

As shown in FIGS. 20, 26, 27 and 44 to 47, when the material holding unit 510 of the material loading unit 500 is lifted along with the upward movement of the cylinder 520 and the pusher 531 of the material pushing unit 530 is lifted, The first rack gear 613e and the second rack gear 613f of the workpiece take-out unit 600 are also raised, but the take-out guide 611 is maintained in the reverse direction. At the same time, as shown in Fig. 28, the annular material M fixed to the fixation chuck 200 is processed by the tool 310 in accordance with the movement of the tool rest 300. Fig.

21 and 22, when the material loading unit 500 is positioned at the uppermost position, the annular material M is supplied again from the material supply unit 400 and the annular material M is supplied to the material holding unit 510, The material M is placed, and at the same time, the annular material M fixed to the stationary chuck 200 is in a state in which processing is completed.

The annular material M is injected, transferred, aligned, loaded, and taken out into the work space 110 of the cover frame 100 in which the door 120 is closed through the above-described process, The material M is continuously processed in a large amount.

As described above, according to the CNC lathe for processing an annular material according to the present invention, a material supply unit, a material loading unit, and a material takeout unit of a new structure suitable for processing characteristics of an annular material are installed inside the cover frame, The insertion, loading and unloading of the annular material can be performed freely and automatically, so that the productivity can be improved. Therefore, it is possible to omit the opening and closing process of the door frequently so that the door can be prevented from being broken and damaged, and durability can be secured.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

M: Annular material
100: cover frame 110: working space
120: Door 121: Material take-out hole
130: Material input hole
200: Fixing chuck
300: Tool stand 310: Tool
400: Material supply unit 410: Transport guide
420: alignment slide 430: counter sensor
440: Proximity sensor 450: Warning part
500: Material loading unit
510: Material grip section
511: upper grip member 512: lower grip member
513: spring 514:
520: Cylinder
530: Material pushing part 531: Pusher
532: pushing cam 532a: projection
533: lifting groove
533a: Vertical line 533b: Bending line
600: Material take-out unit
610:
611: Take-out Guide
611a: opening face 611b: protruding face
611c: Balance weight 611d: embossing sheet
612: rotating shaft 612a: rotating bracket
613:
613a: first pinion gear 613a ': first one-way clutch bearing
613b: second pinion gear 613b ': second one-way clutch bearing
613c: third pinion gear 613c ': third rotating bearing
613d: fourth pinion gear 613d ': fourth rotation bearing
613e: first rack gear 613f: second rack gear
620: Fixed-
700: Material loading
710: Loading box 720: Loading cover

Claims

Wherein a work space is formed in the work space, a material injection hole through which the annular material is inserted is formed through the upper portion of the work space, a door is provided on the front surface of the work space to open and close the work space from the outside, A fixing chuck rotatably installed on one side of the inside of the work space of the cover frame and detachably fixing the annular material; A tool bar on which a tool for processing the annular material fixed to the fixing chuck is mounted; a guiding member which is vertically inclined in the working space of the cover frame and guides the annular work material, And a fixing device which is provided above the fixing chuck and receives the annular material from the material supply unit A material loading unit for gripping the supplied annular material and fixing the annular material to the fixed chuck; and a fixing unit provided on one side of the inner side of the work space between the door of the cover frame and the fixing chuck, And a workpiece takeout unit for passing the annular workpiece through the workpiece take-out hole of the door to the front of the door,
The workpiece take-
Wherein one end of the forward rotation is moved from the stationary chuck to the other end of the annular material by the rolling motion, And the other end of the annular material is communicated with the other end of the rotary take-out portion of the rotary take-out portion of the rotary take-out portion, and the other end is connected to the door And a fixed take-out portion extending toward the material take-out hole of the stationary take-out portion and rolling out the annular material passed from the take-out portion and taking it out through the material take-out hole,
The rotation take-
And a rotary drive unit for rotating the rotary shaft in normal and reverse directions through a rotary bracket coupled to a side surface of the takeout guide,
The rotation drive unit includes:
A first pinion gear coupled to the rotating shaft via a first one-way clutch bearing, a second pinion gear coupled to the rotating shaft through a second one-way clutch bearing so as not to interfere with the first pinion gear, A third pinion gear which is gear-connected to an upper portion of the pinion gear and is freely rotatable via a third rotating bearing, and a third pinion gear which is gear- connected to an upper portion of the second pinion gear, A fourth pinion gear mounted coaxially with the third pinion gear via a fourth rotary bearing so as to be freely rotatable and a second pinion gear which is connected to the third pinion gear and is vertically movable up and down A first rack gear and a second rack gear connected to the second pinion gear and vertically moving up and down together with the first rack gear so as not to be connected to the fourth pinion gear, &Lt; / RTI >
The rotation drive unit includes:
The first rack gear and the second rack gear are divided into a first lowering state in which the take-out guide is rotated forward when the first rack gear and a second rack gear are lowered and a second lowering state in which the take-
And when the first rack gear and the second rack gear are lifted, the take-out guide is held in a reverse rotation state.

delete

The method according to claim 1,
The take-
An opening surface opened on a surface facing the fixing chuck is formed at one end of the forward movement so that the annular material fixed to the fixing chuck is positioned inside and a protruding surface protruding upward is formed on a surface facing the opening surface And a CNC lathe for processing an annular material.

The method according to claim 1,
The take-
And a balance weight having a semicircular shape with the rotation axis as a rotation center is provided at a lower portion of the CNC lathe.

The method according to claim 1,
The take-
And an embossing sheet joined to both inner sides of the embossing sheet and having an embossed convex shape of fine circular or oval shape.

delete

The method according to claim 1,
The first falling state is a state in which,
The first pinion gear is rotated in the reverse direction while the first rack gear is gear-linked to the third pinion gear, while the third pinion gear is rotated in the reverse direction to rotate the first pinion gear in a forward direction, And the second rack gear is in a state of being lowered in a state where it is not gear-connected to the fourth pinion gear,
The second falling state is a state in which,
The second rack gear is gear-connected to the second pinion gear, and while the second pinion gear is rotated in the reverse direction, the rotation shaft is reversely rotated to rotate the take-out guide in a reverse direction, Wherein the CNC lathe is in a state in which the pinion gear and the pinion gear are not connected to each other.

9. The method of claim 8,
Wherein the first one-way clutch bearing comprises:
Wherein the first pinion gear transmits rotational force to the rotating shaft during forward rotation and freely rotates the first pinion gear so as not to transmit rotational force to the rotating shaft when the first pinion gear rotates in reverse,
Wherein the second one-way clutch bearing comprises:
And the second pinion gear rotates freely so that the second pinion gear transmits rotational force to the rotational shaft when the second pinion gear rotates in reverse and does not transmit rotational force to the rotational shaft when the second pinion gear rotates in the reverse direction. CNC lathe for material processing.

The method according to claim 1,
Further comprising a work loading box fixed to the front of the material taking-out hole of the door, for loading the annular work material taken out through the work taking-out hole of the door into the inside of the door.

11. The method of claim 10,
The material loader,
A rectangular box-shaped loading box having a side surface and an upper surface facing each other,
And a loading cover for opening and closing an upper surface of the loading box.