KR101490078B1 - Cnc lathe for manufacturing nipple - Google Patents

Abstract

The present invention relates to a computerized numerical control (CNC) lathe which can improve productivity, prevent malfunction and damage of a door by omitting an opening and closing process of the door which was frequent conventionally, and ensure the durability since a conveyor unit, a material grip unit, and material withdrawing unit are installed in the internal side of a cover frame so that a material can be drawn in and out automatically with no restrictions even when the door of the cover frame is closed.

Description

[0001] CNC LATHE FOR MANUFACTURING NIPPLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CNC lathe, which is a machine tool for automatically cutting various metal materials through numerical control and cutting them.

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 a plurality of tools 31 for working the workpiece M fixed to the fixing chuck 20 are mounted while moving inside the work space 11. [

The workpiece M to be processed by the CNC lathe may be a variety of items so that the shape of the fixing chuck 20 or the tool 31 mounted on the tool rest 30 can be variously changed or changed. 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 the process of processing a pipe connecting nipple using a general CNC lathe described above, a pre-shaped nipple-like material is fixed to the fixing chuck 20, the fixing chuck 20 is rotated, The tool rest 30 is moved so that the cutting of the blank M of the selected tool 31 completes the machining.

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 grips the workpiece M to be processed and fixes the workpiece 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 work M in accordance with the set program. That is to say, the tool rest 30 is moved in the work space 11 in a state where the fixed chuck 20 to which the work M is fixed is rotated so that the bite of the selected tool 31 contacts the rotating workpiece M So that the desired shape is cut out. 6 and 7, the door 12 of the cover frame 10 is opened after the completion of the machining, and the workpiece M, which is in a state of being fixed to the fixed chuck 20, Out. By repeating the above process, a large amount of material M is repeatedly processed.

As can be seen from the above-described process, in order to repeatedly process the workpiece M using the CNC lathe, The operator has to open and close the door 12, and secondly, the worker must hold the workpiece M by hand and fasten it to the fixing chuck 20 or take it out. In this case, when the worker directly grasps and removes the 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, a material input / output portion 40 for automatically inputting and extracting the work M to the front of the door 12 of the cover frame 10 may be separately provided as shown in FIG. 8 . 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 of the work space 11 is opened and closed, the work M is put into or taken out of 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 related art can automatically feed and withdraw the material M before and after processing of the material M without intervention of the operator through the material input / ) Can be input and withdrawn, thereby reducing the labor cost and ensuring continuity of work, thereby increasing the productivity.

However, 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, the material M is inserted and processed , The process of opening and closing the door 12 of the cover frame 10 necessarily takes place every time the door 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, .

It is an object of the present invention which is devised to solve the problems as described above and it is an object of the present invention to provide a new structure in which the insertion and withdrawal of a material can be freely performed automatically even in a closed state of a door of a cover frame, And to provide a CNC lathe capable of preventing breakdown and damage according to the present invention.

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.

In order to achieve the above object, a CNC lathe according to the present invention includes a cover frame having a work space formed therein and having a door for opening and closing the work space from the outside, And a tool base mounted with a plurality of tools for machining the material fixed on the fixed chuck while moving inside the work space of the cover frame Wherein the cover frame is formed with a material supply hole passing through the one side of the work space above the fixing chuck, a material draw-out hole formed at a lower portion of the door, one end protruding outside the cover frame And the other end extends through the inside of the cover frame to the material supply hole of the cover frame, A conveyor section that is installed on the tool holder and moves together with the tool holder and grasps the material transferred to the material supply hole through the conveyor section, A cover frame provided on a side of the cover frame, the cover frame having a workpiece grasping portion for fixing the workpiece to the work frame, And a material loading box which is fixed to the front of the material drawing hole of the door and loads the material drawn through the material drawing hole of the door into the inside of the door, .

The material supply opening / closing portion may include a material supply opening / closing cylinder fixedly installed in the inside of the cover frame to reciprocate the material supply opening / closing cylinder, And a material supply opening and closing plate for opening and closing the material supply hole of the cover frame while moving back and forth in accordance with the reciprocating motion of the material supply opening and closing cylinder.

The material gripping unit includes a gripping cylinder fixedly installed on the tool rest and reciprocating thereon, and a gripper gripping or gripping the work while moving back and forth according to the reciprocating motion of the material gripping cylinder.

The material withdrawing portion may include a main rotating shaft rotating normally or constantly at a constant angle, a longitudinal rotating shaft cooperatively rotating through the plurality of gear trains on the main rotating shaft, and a downward movement of the stationary chuck, And a basket that is coupled to the longitudinal rotary shaft and rotates together so that the depressed surface moves in a forward direction from the to-be-seen state to the material withdrawal hole of the door, The basket is moved from the fixed chuck to the inside of the depression of the basket, and when the basket is rotated together with the longitudinal rotating shaft in conjunction with the rotation of the main rotating shaft to cause the basket to pass, Wherein the material accommodated in the inside of the door is moved to the material withdrawal hole of the door by a centrifugal force due to rotation of the basket It is characterized.

The CNC lathe according to the present invention is installed in the inside of the cover frame of the conveyor part, the material grip part, and the material drawing part so that the material can be automatically inserted and withdrawn even when the door of the cover frame is closed, have. 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 according to the present invention,
11 is a main part perspective view showing a state in which the work loading box is disassembled from the door in the embodiment of Figs. 9 and 10,
FIG. 12 is a main part perspective view showing a tool holder and a workpiece holding portion equipped with a plurality of tools in the embodiment of FIG. 10,
Fig. 13 is a principal perspective view showing the conveyor portion and the material supply opening / closing portion in the embodiment of Fig. 10,
FIG. 14 is an actual photograph of the embodiment of FIG. 13 taken from the opposite side,
Fig. 15 is a principal perspective view showing the fixing chuck and the material withdrawing portion in the embodiment of Fig. 10,
FIG. 16 is an actual photograph of the embodiment of FIG. 15,
FIGS. 17 to 28 are perspective views showing a process of manufacturing a CNC lathe according to the present invention.

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

9 to 28, the CNC lathe according to the present invention includes a cover frame 100, a fixing chuck 200, a tool rest 300, a conveyor part 400, a material holding part 500, (600) and a material loading box (700), and may further include a material supply opening / closing unit (800). The material gripping part 500 may include a material holding cylinder 510 and a gripper 520. The material withdrawing part 600 may include a main rotating shaft 610, a longitudinal rotating shaft 620, and a basket 630 And the material supply opening and closing unit 800 may include a material supply opening and closing cylinder 810 and a material supply opening and closing plate 820.

9 and 10, the cover frame 100 of the CNC lathe according to the present invention is an outer appearance of a machine tool, in which a work space 110 is formed, and the work space 110 is opened / A door 120 is provided. 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 workpiece M to be processed. The tool rest 300 is mounted with a plurality of tools 310 for processing the workpiece M fixed to the fixture chuck 200 while moving inside the work space 110 of the cover frame 100 . The tool frame 300, on which the cover frame 100, the fixing chuck 200 and the plurality of tools 310 are mounted, is a general configuration of the CNC lathe and its detailed description is omitted.

However, in order to connect and operate the conveyor unit 400, the material holding unit 500, the material withdrawal unit 600, the material loading unit 700 and the material supply opening / closing unit 800, the cover frame 100 10 and 11, a material supply hole 130 is formed through one side of the interior of the work space 110 above the stationary chuck 200, Out hole 121 is formed. The material supply hole 130 of the cover frame 100 is configured to supply the material M into the work space 110 of the cover frame 100 through the conveyor unit 400 as described later, 121 is also configured to draw the finished workpiece M to the front of the door 120 through the workpiece drawer 600 as will be described later.

10, 13 and 14, one end of the conveyor part 400 protrudes out of the cover frame 100, and the other end of the conveyor part 400 passes through the inside of the cover frame 100, To the material supply hole 130 and the material M placed on the upper portion of the belt 410 while rotating the belt 410 is transferred to the material supply hole 130. The reason why the one end of the conveyor part 400 protrudes to the outside of the cover frame 100 is to seat the material M on the belt 410 of the conveyor part 400, This is because it must be supplied into the work space 110 of the cover frame 100 through the material supply hole 130 through the conveyor part 400. The conveyor unit 400 may include a pair of drive pulleys and a tail pulley that rotate the belt 410 infinitely as a conventional conveyor belt, and a rotary motor and a reduction gear that rotate the drive pulley.

A structure for holding the workpiece M transferred to the workpiece supply hole 130 by the conveyor unit 400 in the work space 110 and fixing the workpiece M to the workpiece chuck 200 for processing is needed, And 12, as shown in FIGS. That is, the material holding unit 500 is installed on the tool rest 300 and moves together with the tool rest 300. The material gripping unit 500 moves the material (not shown) M is held and fixed on the fixed chuck 200. When the workpiece grasping part 500 is installed on the tool rest 300, it is provided at the top of the plurality of tools 310 in the figure, but it is sufficient that it is installed not to interfere with each tool 310, . In the case of the tool rest 300, the inside of the work space 110 of the CNC lathe can be configured to be moved in two or three axes or rotated. Therefore, the workpiece holding unit 500, which is installed on the tool rest 300 and moves together, So that the user can move within the work space 110 as well. The material holding unit 500 can move and hold the material M conveyed to the material supplying hole 130 through the conveyor unit 400 together with the tool rest 300 as it is called, M may be moved together with the tool rest 300 to be fixed to the fixing chuck 200, and then the gripping material M may be gripped and returned.

More specifically, as shown in FIG. 12, the material gripping unit 500 includes a material holding cylinder 510 fixedly installed on the tool rest 300 and reciprocating thereon, And a gripper 520 for grasping or releasing the workpiece M, as shown in FIG. 18 to 23, the tool rest 300 is moved upward so that the gripper 520 of the material gripper 500 faces the material M conveyed to the material supply hole 130, The gripping cylinder 510 is operated to move the gripper 520 forward and the gripper 520 moved forward to grip the workpiece M. [ The workpiece holding cylinder 510 is operated so as to return the gripper 520 gripped by the workpiece M backward and the workpiece M held by the gripper 520 faces the fixing chuck 200 The gripper 520 is moved forward by the operation of the material gripping cylinder 510 to fix the gripped material M to the fixed chuck 200, After the grip releasing operation, the gripping cylinder 510 is operated to return the gripper 520 backward.

When the workpiece M is fixed to the fixture 200 by the workpiece grinder 500 as shown in FIG. 24, as in the process of a general CNC lathe, a selected one of the plurality of tools 310 300 are moved to contact the workpiece M fixed to the fixing chuck 200. At this time, the material M fixed to the fixed chuck 200 also rotates by the rotation of the fixed chuck 200.

The finished workpiece M is still fixed to the fixed chuck 200. The workpiece M that is fixed to the fixed chuck 200 needs to be taken out to the outside, And 16, as shown in FIG. The material withdrawing portion 600 is installed between the door 120 of the cover frame 100 and the fixing chuck 200 at one side of the inside of the work space 110 of the cover frame 100, And passes the material M to the front of the door 120 through the material drawing hole 121 of the door 120. [ In order to supply the work M to the inside of the work space 110 of the cover frame 100 in a state where the door 120 is closed and pull out the work M after the completion of the work, The material draw-out hole 121 is formed through the door 120. The material withdrawing portion 600 is provided to withdraw the workpiece M to the front of the door 120 with the material withdrawing hole 121. The material withdrawing unit 600 is configured to allow the material M fixed to the fixing chuck 200 to be taken out from the fixing chuck 200 and then drawn out to the front of the door 120 through the material drawing- It will be done.

The material drawing portion 600 may have various structures. For example, the material drawing portion 500 may include a gripper type according to cylinder operation or a conveyor type by a basket, as well as a basket rotation type described later . In this case, in the case of the cylinder operation, since the cylinder is reciprocated, the time loss is large, and the conveyor type is also slow in conveyance speed. Therefore, after the work M is passed from the fixing chuck 200 after the completion of the processing, 121), the basket rotation type will minimize the process time. 26 to 28, the material take-off unit 600 includes a main rotating shaft 610 rotating in normal and reverse directions at a predetermined angle, and a main rotating shaft 610 rotating in an interlocking manner with the main rotating shaft 610, (631) moves downward from the fixed chuck (200), and the depressed surface (631) moves forward from the to-be-seen state and the to-be-seen state of the fixed chuck (200) And a basket 630 which is coupled to the longitudinal rotary shaft 620 and rotates together so as to have a passing state for looking at the material drawing hole 121 of the door 120.

Although not shown in the drawing, the main rotation axis 610 of the material drawing unit 600 is rotated by receiving a rotational force from the normal rotation motor, and the longitudinal rotation axis 620 rotates about the main rotation axis 610, And a plurality of gear trains are disposed inside the gear box shown in the drawing. Accordingly, when the main rotating shaft 610 rotates, the longitudinal rotating shaft 620 also rotates in the normal and reverse directions. At this time, the basket 630 is coupled to the longitudinal rotary shaft 620 and rotated together. The basket 630 has two states that are rotated in one direction and rotated in the other direction. The basket 630 is divided into a toss state and a path state . That is, since the basket 630 has a basket shape as its name, it has a depressed surface 631 with one side depressed. When the toss state and the path state are specifically defined with respect to the depressed surface 631, the basket 630 ) Moves to the lower side of the fixed chuck 200 so that the depressed surface 631 faces the fixed chuck 200 and the pass state moves forward from the to-be state, 631 are looking at the material drawing hole 121 of the door 120. As shown in FIGS. 26 and 27, when the basket 630 is in a toss state, the material withdrawing unit 600 having such a configuration can move the workpiece M from the fixed chuck 200 to the recessed surface of the basket 630 (631). 28, when the basket 630 rotates together with the longitudinal rotary shaft 620 in conjunction with the rotation of the main rotary shaft 610 to cause the basket 630 to pass through the basket 630, The material M accommodated in the depressed surface 631 of the door 630 is drawn out to the material drawing hole 121 of the door 120 by centrifugal force according to the rotation of the basket 630. When the material withdrawing part 600 is a basket rotating type as described above, the processed material M can be taken out through the material withdrawing hole 121 of the door 120 only by performing two rotation operations in one direction and the other direction, Time can be minimized.

When the material M is drawn out to the front of the door 120 through the material drawing hole 121 of the door 120 by the material drawing unit 600 as described above, If the material M is not received, the material M is damaged or difficult to manage. Therefore, as shown in FIGS. 9 to 11, the material loading box 700 is provided to load the material M drawn out to the front of the door 120 by the material drawing portion 600. That is, the material loading box 700 is fixedly installed in front of the material drawing-out hole 121 of the door 120, and the material M drawn out through the material drawing-out hole 121 of the door 120 is inserted Load. If the material M processed in the material loading box 700 is sufficiently loaded, the material loading boxes 700 may be individually emptied or separately connected to the material loading box 700 so that the material loaded on the material loading box 700 M) may be added and loaded automatically.

When the material supply hole 130 of the cover frame 100 is kept open at all times, the material M transferred by the first conveyor unit 400 is unexpectedly moved to the work space And the second material M may be attached to the material M waiting to be processed through the material supply hole 130 in which chips or other foreign substances generated during processing are opened, As shown in Fig. The material supply opening and closing part for opening and closing the material supply hole 130 so as to be opened or closed only when the material gripper 500 wants to grasp the material M conveyed to the material supply hole 130 by the conveyor part 400 800). That is, the material supply opening and closing part 800 opens and closes the material supply hole 130 of the cover frame 100 as shown in FIGS. 13, 14, 18 and 21. More specifically, the material supply opening and closing part 800 includes a material supply opening and closing cylinder 810 fixedly installed inside and reciprocating within the cover frame 100, And a material supply opening and closing plate 820 for opening and closing the material supply hole 130 of the cover frame 100 while moving back and forth in accordance with the reciprocating motion of the material supply opening and closing cylinder 810.

Hereinafter, the operation of the CNC lathe according to the present invention will be described with reference to FIGS. 9 and 17 to 28, and a repeated description of the above description will be omitted.

The door 120 of the cover frame 100 can be opened and closed as shown in FIG. 9, but in the case of the present invention, in the process of supplying, processing, and drawing the material M into the work space 110, The door 120 maintains the closed state without the need to open the door 120. [ The process of FIG. 17 starts when the door 120 is closed.

17, the tool rest 300 is in a waiting state for work. The material withdrawing part 600 is a path state in which the recessed surface 631 of the basket 630 faces the material withdrawing hole 121, The material supply opening / closing plate 820 of the supply opening / closing unit 800 is in a state in which the material supply hole 130 is closed. At this time, the material M to be processed is conveyed to the material supply hole 130 by the operation of the conveyor unit 400.

The tool rest 300 is moved upward so that the gripper 520 of the material gripping part 500 faces the material withdrawal hole 130 as shown in FIG. 18, and at the same time, the material of the material supply opening and closing part 800 The material supply opening / closing plate 820 is operated through the supply opening / closing cylinder 810 to open the material supply hole 130.

The material holding cylinder 510 of the material holding unit 500 is operated to move the gripper 520 forward and the material conveyed to the material supplying hole 130 by the conveyor unit 400 And gripped by the gripper 520 moved forward.

The material holding cylinder 510 of the material holding unit 500 is operated to return the gripper 520 to the back as shown in FIG. 20, and the material M to be processed is grasped in the gripper 520 .

The tool rest 300 moves downward so that the gripper 520 gripped by the workpiece M is facing the fixing chuck 200 as shown in Fig. 21, and at the same time, through the workpiece supply opening / closing cylinder 810 The material supply opening / closing plate 820 is operated to close the material supply hole 130.

22, the workpiece holding cylinder 510 is operated to move the gripper 520 forward, and the workpiece M gripped by the gripper 520 is fixed to the fixing chuck 200. As shown in FIG. At this time, when the workpiece M is fixed to the fixing chuck 200, the gripper 520 grasps the workpiece M, and at the same time, the workpiece M to be processed next by the operation of the conveyor part 400 is moved And then waits after being fed to the supply hole 130.

The material holding cylinder 510 is operated to return the gripper 520 to the back as shown in FIG. 23, and the material M to be processed is fixed to the fixing chuck 200.

24, the fixed chuck 200 is rotated to rotate the workpiece M fixed to the fixed chuck 200. In this state, when the workpiece M is rotated, The tool rest 300 moves so as to contact the work M and process the work M. When the machining of the workpiece M is completed by the selected tool 310, the rotation of the fixed chuck 200 is stopped.

As shown in FIGS. 25 and 26, when the fixed chuck 200 stops rotating after completion of the work M, the longitudinal rotary shaft 620 is rotated in conjunction with the forward rotation of the main rotary shaft 610 of the workpiece take- By rotating, the basket 630 is in a toss state. That is, the basket 630 moves downward of the fixed chuck 200, and the depressed surface 631 is in a state of looking at the fixed chuck 200. [

27, when the workpiece M fixed to the fixed chuck 200 is automatically dropped by the unlocking operation of the fixed chuck 200, the basket 630, which is a toss state located below the fixed chuck 200, (631). That is, when the basket 630 is in the toss state, the workpiece M is delivered from the stationary chuck 200 into the recessed surface 631 of the basket 630.

As shown in FIG. 28, the vertical rotating shaft 620 rotates in conjunction with the reverse rotation of the main rotating shaft 610, so that the basket 630 is in the path state. That is, the basket 630 moves forward from the toss state, and the depressed surface 631 is in a state of facing the material extraction hole 121 of the door 120. At this time, when the basket 630 passes the material M from the fixed chuck 200 in the toss state and moves to the pass state, the material M accommodated in the recessed surface 631 of the basket 630, Out hole 121 of the door 120 by the centrifugal force resulting from the rotation of the door 630. The material M drawn out to the front side of the door 120 enters the material loading box 700 installed in front of the material drawing-out hole 121 and is stacked.

A single material M is supplied, processed and drawn into the work space 110 of the cover frame 100 in a state where the door 120 is closed as described above, In a large amount.

As described above, the CNC lathe according to the present invention is characterized in that the conveyor unit 400, the material grasping unit 500, and the material drawing unit 600 are installed inside the cover frame 100, The input and withdrawal of the material M can be performed automatically and freely, and productivity can be improved. Therefore, it is possible to omit the opening and closing process of the door 120 frequently, so that the door 120 can be prevented from being broken and damaged, and durability can be ensured.

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: Material
100: cover frame 110: working space
120: Door 121: Material drawing hole
130: Material supply hole
200: Fixing chuck
300: Tool stand 310: Tool
400: Conveyor part 410: Belt
500: Material grip section
510: Material holding cylinder 520: Gripper
600: Material withdrawal portion
610: main rotary shaft 620: longitudinal rotary shaft
630: Basket 631: Depressed surface
700: Material loading
800: Material supply opening / closing part
810: material supply opening / closing cylinder 820: material supply opening / closing plate

Claims (4)

A cover frame provided with a work space therein and having a door for opening and closing the work space from the outside; and a cover frame rotatably installed on one side of the inside of the work space of the cover frame, And a tool table mounted with a plurality of tools for machining the workpiece fixed to the fixing chuck while moving inside the work space of the cover frame,
The cover frame
A material supply hole is formed on a side surface of the fixed chuck at one side of the work space, a material drawing hole is formed in a lower portion of the door,
And the other end is extended to the material supply hole of the cover frame through the inside of the cover frame and is conveyed to the material supply hole at an upper portion while the belt is rotating infinitely A conveyor section,
A workpiece gripping part installed on the tool holder and moving together with the tool holder and holding the workpiece transferred to the workpiece supply hole through the conveyor part and fixing the workpiece to the fixing chuck,
A door provided on a side surface of the cover frame between the door and the fixing chuck, and the material is passed from the fixing chuck to draw the material through the material drawing hole of the door to the front of the door A material draw-
A material loading box fixed to the front of the material drawing hole of the door and loading the material drawn through the material drawing hole of the door,
Further comprising a material supply opening portion for opening and closing a material supply hole of the cover frame,
The material supply opening /
A material supply opening / closing cylinder fixedly installed inside the cover frame and reciprocating,
And a material supply opening / closing plate for opening / closing the material supply hole of the cover frame while moving back and forth in accordance with the reciprocating motion of the material supply opening / closing cylinder and having a larger area than the material supply hole of the cover frame. .
delete The method according to claim 1,
The above-
A material holding cylinder fixedly mounted on the tool rest and reciprocating,
And a gripper for grasping or grasping the workpiece while moving back and forth in accordance with the reciprocating motion of the workpiece holding cylinder.
The method according to claim 1,
The material draw-
A main rotating shaft rotating normally and constantly at a predetermined angle,
A longitudinal rotating shaft which rotates relative to the main rotating shaft via a plurality of gear trains,
And a lower surface of the stationary chuck, the stationary chuck being movable in a downward direction so that the depressed surface moves forward from the to-be-seen state and the to-be- A basket coupled and rotated together,
When the basket is in a toss state, the workpiece is delivered from the stationary chuck to the inside of the recess of the basket. When the basket rotates together with the longitudinal rotary shaft in conjunction with the rotation of the main rotary shaft, And the material accommodated in the recessed surface of the basket is drawn out to the material drawing hole of the door by the centrifugal force due to the rotation of the basket.

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