KR20030057848A - Appratus of Center Shutter Between Opposed Two Main Spindles of an Automatic Lathe Such as CNC Lathe - Google Patents

Abstract

PURPOSE: A partition opening apparatus in an automatic lathe with two opposed spindles is provided to work stably and individually by forming the shielding space between both spindles, and to improve working efficiency through synchronous control by opening the moving passage of the spindles. CONSTITUTION: A partition opening device is composed of a main panel(40) fixed in frames(12,14) of the lathe and placed between doors in closing the doors; a partition panel(50) extended from the main panel for shielding spindles and composed of an opening part(52) passing the spindle in the moving passage; a shutter(60) installed in the partition panel to open and close the opening part; and a fluid cylinder(70) connected to the shutter to open and close the shutter. The opening part of the partition panel is opened and closed by turning the shutter with the fluid cylinder.

Description

Apparatus of Center Shutter Between Opposed Two Main Spindles of an Automatic Lathe Such as CNC Lathe}

The present invention relates to a partition opening and closing device which is installed between two main shafts facing each other in an automatic lathe such as an NC lathe or a CNC lathe, and is opened or closed by pneumatic or hydraulic pressure. It is possible to safely carry out cutting work, workpiece removal, retooling, or maintenance, and in particular, to open the part corresponding to the axial movement path of the spindle, so that the synchronization between the two spindles can be applied. An interaxial partition opening and closing device in an opposing twin-axial automatic lathe that enables process-intensive processing of exchanging workpieces.

As is well known, automatic lathes such as NC lathes and CNC lathes perform rotational cutting operations of workpieces while automatically controlling servo mechanisms consisting mainly of spindles and tool posts (mainly turrets) by a control system.

Among these automatic lathes, there are opposing twin-axis lathes with two spindles and tool posts facing each other on the left and right sides. In the case of the opposite twin-axis lathes, it is possible to perform independent machining on each spindle. have. In other words, it is possible to separately perform work on each spindle, such as removing a workpiece from the chuck, retooling the chuck and the tool post, or cleaning the inside. In addition, in the case of such an opposing twin shaft lathe, the synchronous control of two opposing spindles is applied to implement a process-intensive machining in which the workpiece is passed from one spindle to the other spindle.

In the case of the above-described counter biaxial lathe, it is preferable to install a partition in the middle of the lathe in order to smoothly perform the independent work on both main shafts. And it is possible to secure an independent space for the before and after work. For example, if you want to perform the machining process on one spindle and retooling or maintenance on the other spindle, there is a partition in the middle to protect the worker from accident risks and This can prevent the cutting oil, chips, etc. from splashing from side to side.

In the case of the opposing twin-axis lathe as above, it is preferable to install a partition between two opposing spindles, but for example, when performing a process by synchronous control such as passing a workpiece from one spindle to the other spindle, Since the partition is obstructed by the movement of the spindle, the process can not be performed, it should be able to open the partition if necessary.

However, this could not be achieved with a conventionally known partition structure. In more detail, the conventional partitioning device of a conventional twin shaft lathe can be found only as shown in the accompanying drawings, in which the two main shafts are not facing each other and both main shafts are machined. It is an intermediate partition device applied to the twin shaft of the forward-facing form.

1 shows the intermediate partition device as viewed from the right side of the shelf. Thus, the left side of the figure is the front of the shelf and the right side is the back of the shelf. The spindle (S) is facing the front of the shelf, and as shown, in the case of a twin shaft with two spindles conventionally facing the front of the machine, the intermediate partition (1) is framed in the shelf body between the two spindles (S). (2) was placed and connected to the frame (2) with a hinge (3) so that it could be rotated left and right. The lock rod 4 is slidably installed on the upper part of the middle partition 1, and the lock rod 4 is installed on the frame 2 by installing a bracket 5 into which the lock rod 4 can be inserted and removed. Insertion or removal of the bracket (5) to prevent or rotate the rotation of the intermediate partition (1), and by installing a stop bolt (7) on the guide rail (6) in front of the shelf body by installing the intermediate partition ( The groove 1a of 1) can be pressed and fixed.

In the conventional middle partitioning device, when the machining is performed simultaneously on the left and right main shafts, the locking rod 4 of the middle partition 1 is inserted into the bracket 5 so that the middle partition 1 does not rotate. By turning the stop bolts 7 and tightening, the partition 1 can be prevented from being shaken or rotated by vibration generated during machining, and the workpiece is detached or held in the chuck independently while the left and right sides are blocked. It is possible to work, such as maintenance, and when the work space is narrow, the stop bolt (7) and the lock rod (4) were released, and then the middle partition (1) could be rotated to secure a work space.

However, there are many problems when the conventional intermediate partition device as described above is intended to be applied as it is to the opposite biaxial lathe in which two main axes face each other.

First, when the two main axes face each other and apply the synchronous control to the left and right main shafts and pass the workpiece from one main shaft to the other main shaft, the middle partition (1) Because of the blocking, the process by synchronous control cannot be performed. If the middle partition (1) can be left open to avoid interference with the moving headstock, in this case the middle partition (1) must be sideways, since the middle partition (1) must be fully flipped sideways so as not to interfere with the process. As a result, there is a need for a free space that can be fully retracted to increase the overall length of the equipment. In addition, if the middle partition (1) is completely flipped to the side, the remaining portion except the movement path of the spindle is also opened, so chips or cutting oil generated from one spindle are splashed or scattered on the other spindle, adversely affecting the process. There is also concern.

Furthermore, since the operator has to open and close the intermediate partition 1 manually every time, the work itself is not only inconvenient, but also there is an unreasonable need to arrange more workers.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the present invention provides an independent work space by shielding both headstocks in an opposing twin shaft lathe having two headstocks and tool posts facing each other. It is an object of the present invention to provide an inter-shaft partition opening and closing device in an opposing twin-axis automatic lathe that enables the part corresponding to the movement path to be opened as needed, thereby enabling the process to be carried out by synchronous control of exchanging workpieces between both spindles. .

1 is a view showing a conventional intermediate partition device

Fig. 2 is a view showing the state in which the interaxial partition opening and closing device according to the present invention is installed on an automatic lathe as a whole.

FIG. 3 is a view of FIG. 2 from the front of the shelf (left side of FIG. 2).

It is a figure which shows the principal part of the interaxial partition opening and closing apparatus which concerns on this invention.

5 is a cross-sectional view taken along the line A-A in FIG.

FIG. 6 is a cross-sectional view taken along the line B-B in FIG. 4. FIG.

7 is a cross-sectional view taken along the line C-C in FIG.

FIG. 8 is a view illustrating a D-D cross section in FIG. 5; FIG.

9 is a view showing the operation relationship of the shaft opening and closing device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10 body 12 upper frame

14: lower frame 20: left spindle

22: left tool bar 30: right spindle

32: right tool bar 40: main panel

50: partition panel 50a, 50b: outer plate

52: opening 60: shutter

62: hinge 64: insert

66a: bush 66b: stop plate

66c: bolt 70: fluid cylinder

72: cylinder tube 74: piston rod

74a: hinge shaft 74b: bush

74c: stop plate 74d: bolt

80: bracket 82: hinge axis

90: cylinder tube protective cover 100: piston rod protective cover

110,112: stopper 120: support

122: support groove 124: bolt

130: inner support panel 132: guider

In order to achieve the above object, an interaxial partition opening and closing device in an opposing twin-axial automatic lathe according to the present invention is an automatic lathe in an opposing twin-axial automatic lathe having two spindle heads and a tool post facing each other. A main panel fixed to the frame of the shelf in the middle of the body and positioned between the two side doors when the two side doors are closed; A partition panel extending from the main panel so as to shield between the main shafts on both sides, and a partition panel having an opening through which the main shaft can pass through a portion corresponding to the movement path of the main shaft; A shutter installed to open and close the opening in the partition panel; And a fluid cylinder connected to the shutter to open and close the shutter. It is characterized by including a.

In addition, in the opposite twin-axis automatic lathe having two spindle heads and tool posts facing each other from both sides, the main body is fixed to the frame of the shelf in the middle of the body of the automatic lathe is located between the two doors when both doors are closed panel; A partition panel formed of two outer plates spaced at regular intervals, the partition panel extending from the main panel to shield between the main shafts on both sides, and having an opening through which the main shaft passes through the outer plate of a portion corresponding to the movement path of the main shaft; A shutter hinged to open and close the opening between the two outer plates forming the partition panel; And a fluid cylinder connected to the shutter to pivotally open and close the shutter. It is another feature to include a.

In addition, in the opposite twin-axis automatic lathe having two spindle heads and tool posts facing each other from both sides, the main body is fixed to the frame of the shelf in the middle of the body of the automatic lathe is located between the two doors when both doors are closed panel; A partition panel formed of two outer plates spaced at regular intervals, the partition panel extending from the main panel to shield between the main shafts on both sides, and having an opening through which the main shaft passes through the outer plate of a portion corresponding to the movement path of the main shaft; A shutter hinged to open and close the opening between the two outer plates forming the partition panel; A fluid cylinder connected to the shutter to pivotally open and close the shutter; An inner support panel extending from the main panel between the two outer panels of the partition panel toward the opening; And a guider configured to insert the shutter along the tip of the opening side of the inner support panel so that the shutter is inserted within the inner support panel. It is another feature to include a.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

First, FIG. 2 and FIG. 3 show the structure of the interaxial partition opening and closing apparatus which concerns on this invention as a whole.

In the opposite twin-axis automatic lathe, the left main shaft 20 and the left tool bar 22 (turret) and the right main bar 30 and the right tool bar 32 are disposed to face each other on both sides of the lathe body 10. The main panel 40 is provided along the outer edge of the shelf at the middle of the two main shafts 20 and 30 so as to weld or rivet the frame to the body 10 side, that is, the upper frame 12 and the lower frame 14. Or it is mounted by a method such as bolting, the partition panel 50 is extended from the main panel 40 to shield between the two headstock 20, 30 to provide independent working space on both sides, such partition The panel 50 has an opening 52 having a size that allows the main shafts 20 and 30 to pass through at a portion corresponding to the movement path of the main shafts 20 and 30, and a shutter on one side of the partition panel 50. 60 is installed to open and close the opening 52, and pneumatic or hydraulic pressure to the shutter (60) By which the working fluid cylinder 70 is connected to operate a shutter (60) thereof by the fluid cylinder 70 is a structure so as to open and close the opening 52. In the example shown, the opening 52 and the shutter 60 are approximately quadrant so that their center of rotation is pivotally connected to the partition panel 50 by a hinge 62, and the fluid cylinder 70 is a shutter. It is connected to the middle portion of 60 to operate the shutter 60 in the opening and closing direction (up and down direction in FIG. 2).

4 and 5 show only the middle partition opening and closing device of the present invention described above in more detail.

4 and 5, the partition panel 50 extending from the main panel 40 is composed of two outer plates 50a and 50b according to the preferred direction of the present invention, and the opening 52 has two outer plates ( It is formed through 50a and 50b). The outer plates 50a and 50b may be integrally extended from the main panel 40, or may be provided by a separate plate and coupled to the main panel 40 by welding or the like. In the present invention, the two outer plates 50a and 50b are kept spaced apart at regular intervals, and the shutter 60 is sandwiched between the outer plates 50a and 50b so as to hinge the outer plates 50a and 50b. 62) to be combined and rotated.

The fluid cylinder 70 is configured by hinged the end of the cylinder tube 72 thereof to the inner upper surface of the main panel 40 to be rotated in the opening and closing direction of the shutter 60 via the bracket 80, The end portion of the piston rod 74 is pivotably connected to the middle of the shutter 60 via the hinge shaft 74a. Meanwhile, a cylinder protective cover 90 is installed outside the fluid cylinder 70, that is, the cylinder tube 72, to prevent foreign matter from entering the fluid cylinder 70, and to the piston rod 74. A protective cover 100 is provided to surround and protect the circumference, and the protective cover 100 is slidably inserted into the cylinder tube 72 and the protective cover 90.

And, as shown in Figure 4, the body 10 of the automatic lathe is provided with stoppers 110 and 112 at portions corresponding to the open position and the closed position of the shutter 60. The stoppers 110 and 112 are preferably made of rubber, plastic, wood, or the like, which are softer than the shutter 60.

In FIG. 5, in particular, the hinge structure of the shutter 60 and the hinge structure of the fluid cylinder 70 are described in detail. First, an insert 64 is coupled to the center of rotation of the shutter 60, and the insert 64 is inserted. The bush 66a inserted from the outside of the outer plates 50a and 50b is rotatably penetrated, and the bolt 66c is attached to the bush 66a via a stop plate 66b at an end of the penetrated bush 66a. ) Consists of a structure that is fastened. Then, the fluid cylinder 70 is rotated in the opening and closing direction of the shutter 60 through the hinge shaft 82 to the bracket 80 mounted on the inner upper surface of the main panel 40, the end of the cylinder tube 72. The piston rod 70 forms a hinge shaft 74a at an end thereof, and the shutter 60 couples a bush 74b through which the hinge shaft 74a is rotatably penetrated. The bolt 74d is fastened to the bush 74b through a stop plate 74c at an end portion of the hinge shaft 74a penetrating the bush 74b.

6 is a cross-sectional view taken along line BB of FIG. The cross-sectional shape of 100) is shown. Look in parallel with FIG.

The cylinder tube protective cover 90 and the piston rod protective cover 100 maintain a square cross section, and as described above, the piston rod protective cover 100 is slidably inserted into the cylinder tube protective cover 90. . The cylinder tube 72 maintains a circular contour, and has two semicircular support grooves 122 corresponding to the cross-sectional contour of the cylinder tube 72 between the cylinder tube 72 and the protective cover 90. Support 120 is provided. Each support 120 is interposed between the cylinder tube 72 and the protective cover 90 in a state in which its support groove 122 is in close contact with the cylinder tube 72, and bolts from the outside of the protective cover 90 are supported. 124 is fastened and fixed.

7 and 8 are cross-sectional views taken along the line C-C and D-D of FIG. 4, and show the cross-sectional structures of the main panel 40, the partition panel 50, and the shutter 60 described above in more detail. In front of the main panel 40, the left and right doors 200 and 202 of the automatic lathe are opened and closed. When the left and right doors 200 and 202 are closed, the main panel 40 has a structure positioned between the left and right doors 200 and 202. From the main panel 40, a partition panel 50 consisting of two outer plates 50a and 50b is formed to extend, and the two outer plates 50a and 50b are integrally extended from the main panel 40. In addition, it is possible to provide a separate plate to be bonded to the main panel 40 by a method such as welding or riveting.

In addition, the inner support panel 130 extends from the main panel 40 toward the opening portion 52 between the two outer plates 50a and 50b of the partition panel 50. A guider 132 for guiding the shutter 60 to both sides is formed along the tip of the opening 52 side of the 130 so that the shutter 60 is guided between the guiders 132. 4, the front portion of the opening 52 has a structure in which the partition panel 50, that is, the two outer plates 50a and 50b are completely removed, and only one inner support panel 130 remains. The tip of the cross section forms a part of the opening portion 52. In the illustrated example, only the upper portion of the inner support panel 130 has a structure formed between the outer plates 50a and 50b. This is because the bottom of the opening 52 is intended to be composed of one panel. If the two outer plates 50a and 50b are kept in the lower part of the opening 52, chips, cutting oil, etc., generated during cutting, Since foreign matter enters between two sheets 50, a, and 50b, it is very difficult to remove it later, so only one inner support panel 130 is left to prevent such a problem.

It is a figure which shows the operation relationship of the interaxial partition opening and closing apparatus in the opposed twin-shaft automatic lathe of this invention made as mentioned above.

When the opening 52 is open, the shutter 60 is positioned between the two partition panels 50, that is, the two outer plates 50a and 50b, and applies a hydraulic pressure to the fluid cylinder 70 to actuate the piston rod 74. When the shutter is pushed, the shutter 60 is rotated downward in the drawing about its hinge 62 to close the opening 52. In this case, the shutter 60 is guided to rotate stably by the guider 132 of the inner support panel 130, and the fluid cylinder 70 has the cylinder tube 72 of the shutter 60 through the bracket 80. Since the piston rod 74 is also hinged in the middle of the shutter 60 through the hinge shaft 74a, the entire fluid cylinder 70 is rotated as the shutter 60 rotates. The opening and closing operation of the shutter 60 is performed while freely angling. At the point where the shutter 60 is completely closed, the shutter 60 is stopped by touching the stopper 110 provided in the body 10.

Next, when performing a process such as exchanging a workpiece between both spindles, pulling the piston rod 74 of the fluid cylinder 70, the shutter 60 is raised and rotated, the body (10) ) Is stopped by touching the stopper 112 provided in the). Therefore, since the opening 52 of the partition panel 50 is opened, the main shaft bars 20 and 30 can be passed through.

Therefore, when it is desired to provide an independent space on the main axis of both sides facing each other, it is possible to smoothly perform independent processing and before and after processing by closing the shutter 60 to block between both main axes.

In particular, when performing the process by the synchronous control, such as passing the workpiece from one main shaft to the other main shaft, it is possible to smoothly move the main shaft by opening the shutter (60) to open the opening (52). In this case, since the partition panel 50 is kept intact except for the opening 52, only the necessary part passes through and the unnecessary part is shielded, thereby preventing interference such as chip splashing between the two spaces while performing a process by synchronous control. This can be reduced to a minimum.

As described above, the interaxial partition opening and closing device in the opposite twin shaft automatic lathe according to the present invention can provide a shielded space between the two main shafts in the opposite twin shaft with two main shafts and tool posts facing each other. In addition, the parts corresponding to the movement paths of both spindles can be opened as needed, so that the process can be performed by synchronous control that exchanges workpieces between the spindles.

Claims (8)

In an opposing twin-axis automatic lathe with two spindles and tool posts facing each other, A main panel fixed to a frame of a shelf in the middle of the body of the automatic shelf and positioned between both doors when both doors are closed; A partition panel extending from the main panel so as to shield between the main shafts on both sides, and a partition panel having an opening through which the main shaft can pass through a portion corresponding to the movement path of the main shaft; A shutter installed to open and close the opening in the partition panel; And A fluid cylinder connected to the shutter to open and close the shutter; Interaxial partition opening and closing device in the opposite-type biaxial automatic lathe comprising a. In an opposing twin-axis automatic lathe with two spindles and tool posts facing each other, A main panel fixed to a frame of a shelf in the middle of the body of the automatic shelf and positioned between both doors when both doors are closed; A partition panel formed of two outer plates spaced at regular intervals, the partition panel extending from the main panel to shield between the main shafts on both sides, and having an opening for allowing the main shaft to pass through the outer plate of a portion corresponding to the movement path of the main shaft; A shutter hinged to open and close the opening between the two outer plates forming the partition panel; And A fluid cylinder connected to the shutter to pivotally open and close the shutter; Interaxial partition opening and closing device in the opposite-type biaxial automatic lathe comprising a. In an opposing twin-axis automatic lathe with two spindles and tool posts facing each other, A main panel fixed to a frame of a shelf in the middle of the body of the automatic shelf and positioned between both doors when both doors are closed; A partition panel formed of two outer plates spaced at regular intervals, the partition panel extending from the main panel to shield between the main shafts on both sides, and having an opening through which the main shaft passes through the outer plate of a portion corresponding to the movement path of the main shaft; A shutter hinged to open and close the opening between the two outer plates forming the partition panel; A fluid cylinder connected to the shutter to pivotally open and close the shutter; An inner support panel extending from the main panel between the two outer panels of the partition panel toward the opening; And A guider formed so that the shutter is inserted in the inner support panel along the tip of the opening side; Interaxial partition opening and closing device in the opposite-type biaxial automatic lathe comprising a. The method according to any one of claims 1 to 3, The fluid cylinder is rotatably hinged to an inner upper surface of the main panel through the bracket in an opening and closing direction of the shutter, and the end of the piston rod is pivotable in the middle of the shutter through the hinge axis. An inter-axial partition opening and closing device in an opposing twin-axial automatic lathe, characterized in that configured to be connected to. The method according to any one of claims 1 to 3, The fluid cylinder is rotatably hinged to an inner upper surface of the main panel through the bracket in an opening and closing direction of the shutter, and the end of the piston rod is pivotable in the middle of the shutter through the hinge axis. Is composed by connecting The cylinder tube is installed to be integrally operated to protect the protective cover surrounding the circumference thereof, The piston rod is provided with a protective cover to protect the circumference of the inter-axial partition opening and closing device in the opposite type biaxial automatic lathe, characterized in that the axially slidably inserted into the cylinder tube protective cover. The method of claim 5, The fixing of the cylinder tube provides two supports having semicircular support grooves corresponding to the cross-sectional contour of the cylinder tube, and between the cylinder tube and the protective cover in such a state that the support grooves of each support are in close contact with the cylinder tube. An interaxial partition opening and closing device in an opposing twin-axial automatic lathe, characterized in that each support is fastened to a cylinder tube through an intervention. The method according to any one of claims 1 to 3, An inter-axial partition opening and closing device in an opposing twin-axial automatic lathe, characterized in that stoppers are provided at both sides of the body corresponding to the open and closed positions of the shutter. The method of claim 3, The opening and closing device of the interaxial partition in the opposing biaxial automatic lathe, characterized in that the front end and the lower end of the opening portion is composed of only one inner support panel so that the tip of the inner support panel forms part of the opening portion.