KR101722867B1 - Bracing device - Google Patents

Abstract

An object of the present invention is to provide an anti-vibration device capable of restricting the vibration of a rod material regardless of the cross-sectional shape of the rod material. The vibration damping device (30) according to the present invention is used in the bar processing machine (10) or the rod feeder (20). The vibration preventing device 30 includes a tubular element 42 disposed coaxially with the axis of rotation 11 of the rod B and supported on the frame 40 so as to be rotatable around the axis of rotation 11, A plurality of rollers 52 movable between a first position 50a spaced from the first position 50a and a second position 50b contacting the bar material B, A contact arm 62 and an inner ring 63 that move to the second position 50b and a drive element 60 that is relatively rotatably coupled to the inner ring 63. [ The driving element 60 moves the inner ring 63 in the direction of the axis of rotation 11 with respect to the tubular element 42.

Description

{BRACING DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an anti-vibration device used in a bar material processing machine or a rod feeder for pushing a rod material by a pusher to feed the rod material to a material processing machine.

A system is known in which a bar material is fed from a bar feeder to a bar material processing machine to machine the bar material. The bar material fed to the bar material processing machine passes through the through hole of the main shaft of the bar material processing machine, and the leading end portion of the bar material is held on the chuck of the main shaft. By rotating the main shaft, the tip end portion of the bar material can be machined in the machining portion (for example, a bite) of the bar processing machine. After the workpiece formed by machining the tip end portion of the rod is cut, the rod is fed toward the machined portion to form and cut the next workpiece.

When the leading end portion of the long bar is processed, the remaining portion of the bar extends through the through hole of the main shaft to the rod feeder. In order to prevent the bar material extending to the bar material feeder from vibrating when the main shaft is rotated, the bar material processing machine and / or the bar material feeder have an anti-vibration device (see, for example, Patent Document 1).

In the vibration preventing device described in Patent Document 1, the vibration of the rod and the bar is regulated by the fitting parts disposed so as to sandwich the rotating rod. The fitting member is, for example, a member having a V-shaped groove or a roller which rotates about an axis parallel to the axis of the rod.

Japanese Patent Application Laid-Open No. 2004-142018

When the section of the rod is circular, the gap between the rod and the fitting part does not change when the rod rotates. However, when the end face of the bar is a polygonal shape such as a square or a hexagon, the interval between the fit-in support members is adjusted by the stopper to the maximum diameter of the end face of the bar, . Therefore, there has been a case where the vibration of the rod material can not be sufficiently controlled.

There is also a demand to regulate the vibration of the plunger connected to the bar.

Therefore, it is a first object of the present invention to provide an anti-vibration device capable of restricting the vibration of a rod regardless of the sectional shape of the rod. It is a second object of the present invention to provide an anti-vibration device capable of restricting vibration of a plunger connected to a rod.

In order to achieve the first object, an anti-vibration device according to the present invention is used for a bar material processing machine or a rod feed machine for feeding a rod material to a rod material processing machine. A tubular element which is disposed and is rotatably rotatable about a rotational axis and which is supported by a machine tool or a rod feeder; a first position spaced from the rod and a second position contacting the rod to hold the rod on the rotational axis; A moving element coupled to the abutment and movably supported on the tubular element to move the abutment from the first position to the second position; Rotatably coupled to move the moving element relative to the cylindrical element to move the contact from the first position to the second position, The key has a driving element, and when the contacting portion is in the second position, the contacting portion, the moving element and the tubular element are rotatable by the rotation of the rod, and the driving element does not rotate.

In the anti-vibration device having such a structure, by moving the moving element supported by the tubular element, the contact portion moves to the second position and contacts the bar material, and holds the bar material on the rotation axis. On the other hand, the driving element for moving the moving element is rotatable relative to the moving element. Thus, the contact portion, the moving element and the tubular element are rotatable together with the bar material while keeping the bar material on the axis of rotation, and the driving elements supported by the bar material processing machine or the bar material feeder do not rotate. That is, the relative movement in the rotating direction between the contact portion and the bar material does not occur. As a result, it is possible to regulate the vibration of the rod material not only when the rod has a circular section, but also when the rod has a polygonal section. Further, since there is no relative rotation between the contact portion and the bar material, it is possible to maintain the bar material with a strong force by the contact portion during rotation. Further, the vibration preventing device may be used for the plunger.

In order to achieve the second object, the vibration preventing device according to the present invention is used for a bar material processing machine or a rod feed machine for feeding a bar material to a bar material processing machine by pushing the bar material by a pusher, A tubular element arranged coaxially with the axis of rotation of the bar and rotatably about an axis of rotation and supported on a bar or a bar feeder; a first position spaced apart from the bar, A moving element coupled to the abutment and movably supported on the tubular element to move the abutment from the first position to the second position; And is rotatably coupled to the moving element in a relatively rotatable manner to move the contacting portion from the first position to the second position, Having a drive element to move relative to the tubular element and is characterized.

In the vibration preventing device according to the present invention, preferably, the contact portion is constituted by a roller, and more preferably, the rotational axis of the roller is in contact with the rod or the bar when the rod and the rod move in the direction of the rotational axis The rollers are arranged to rotate. In this case, it is possible to move the direction of the axis of rotation of the rod material and the bar material while grasping the rotating rod material or the non-rotating plunger, which is advantageous, for example, when the rod material processing machine is a spindle-moving type.

In this anti-vibration device, more preferably, when the chuck of the main shaft of the bar processing machine holds the bar material, the roller is in contact with the bar material or the plunger.

In the vibration preventing device thus constituted, for example, when the chuck of the main shaft releases the bar material, the bar material is conveyed, and the bar material is in contact with the roller when the chuck holds the bar material, The plunger is kept on the axis of rotation without falling down. Accordingly, the vibration of the rod or bar can be effectively regulated.

In the vibration preventing device according to the present invention, more preferably, the driving element has an air cylinder and a regulator for regulating the air pressure supplied to the air cylinder, and with a force according to the pressure regulated by the regulator, Or grip the plunger.

In the anti-vibration device according to the present invention, preferably, the moving element has a pivoting element pivotally supported on the tubular element, more preferably, the moving element slides on the tubular element to pivot the pivoting element The sliding element is slidable in the direction of the axis of rotation with respect to the tubular element. Further, in the form of having a sliding element, preferably, the driving element is coupled to the sliding element via a bearing. Further, in the vibration preventing device according to the present invention, preferably, the contact portion is pressed to the first position by a spring provided between the moving element and the cylindrical element.

With the vibration preventing device according to the present invention, the vibration of the rod can be regulated regardless of the sectional shape of the rod. Further, by the vibration preventing device according to the present invention, the vibration of the plunger connected to the rod can be regulated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a bar processing machine and a bar feeder. Fig.
2 is a front cross-sectional view of the anti-vibration device according to the present invention.
3 is a right side sectional view of the anti-vibration device according to the present invention.
4 is a plan view of an anti-vibration device according to the present invention.
5 is a front sectional view of the anti-vibration device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an anti-vibration device according to the present invention will be described with reference to the drawings.

1 comprises a bar processing machine 10 (for example, an NC lathe) for processing a bar material B and a bar machining machine 10 for machining a bar material B on the upstream side (also referred to as a rear side) of the bar material processing machine 10 And a bar feeder 20 for feeding the bar material B along the feed axis 21 coinciding with the longitudinal axis B1 thereof to the bar processing machine 10. [

The bar tacking machine 10 generally includes a main shaft 12 and a machining portion 13 (for example, a bite) that rotate about the rotational axis 11, and the main shaft 12 has a rotational axis A through hole 14 along the through hole 14 and a chuck 15 for releasably holding the vicinity of the front end portion Bb of the bar material B passed through the through hole 14 ). The main spindle 12 is moved or the main spindle 13 is moved (main spindle fixed type) while rotating the main spindle 12 while rotating the main spindle 12 held on the main spindle 12, It is possible to carry out cutting. When the bar material B is long, the bar material B held by the chuck 15 of the main shaft 12 passes through the through hole 14 and extends into the bar feeder 20 on the upstream side.

The rod feeder 20 is configured such that the rod members B are taken out one by one from a material shelf (not shown) to a guide rail (not shown) arranged along the feed axis 21, And pushes the part Ba onto the plunger 22 to feed the roughened material B along the guide rails (not shown). The structure may be a conventional one, and a detailed description thereof will be omitted.

The bar processing system 1 has an anti-vibration device 30 for restricting the vibration of the bar material B rotated by the main shaft 12. The vibration damping device 30 is disposed, for example, on the upstream side of the main shaft 12 and in the vicinity thereof. The vibration damping device 30 may be supported by the rod processing machine 10 or the rod feeder 20.

2 and 3, the vibration damping device 30 includes a frame 40 fixed to the machine 10 or the feeder 20, a rotary shaft 11 of the rod B, And a tubular element 42 disposed coaxially and supported on the frame 40 so as to be rotatable about the axis of rotation 11. The tubular element 42 is supported on the frame 40 through a bearing 43. The tubular element 42 has an inner diameter larger than the diameter of the bar material B.

The vibration damping device (30) further includes a plurality of contact portions (50). Each contact portion 50 has a first position 50a spaced from the bar material B and a second position 50b contacting the bar material B to hold the bar material B on the axis of rotation 11 . In the present embodiment, the abutting portion 50 is constituted by rollers 52, and three rollers 52 are provided at regular intervals in the circumferential direction of the bar material B. The rotation axis 53 of the roller 52 is arranged so that the roller 52 with which the bar material is in contact when the bar material B moves in the direction A of the rotation axis 11 is rotated.

The anti-vibration device 30 further includes a moving element 60 coupled to the contact portion 50 (roller 52). The moving element 60 is movably supported on the tubular element 42 to move the roller 52 from the first position 50a to the second position 50b. The moving element 60 includes a contact arm 62 which is a pivoting element pivotally supported on the tubular element 42 and a contact arm 62 which is pivotally supported on the tubular element 42 to pivot the contact arm 62. In this embodiment, And an inner ring 63 which is a sliding element supported slidably.

The contact arm 62 is pivotable about an axis 44 provided in the tubular element 42 and passes through a hole 45 formed in the tubular element 42. The shaft 44 extends perpendicularly to the rotational axis 11. The contact arm 62 has a first end 64 provided with a roller 52 rotatably and a second end 65 opposite thereto. The roller 52 is preferably urged to the first position 50a by a spring 66 provided between the contact arm 62 and the tubular element 42. [

The inner ring 63 is slidable in the direction A of the rotational axis 11 with respect to the tubular element 42 and does not move in the peripheral direction. Also, the inner ring 63 is coupled to the second end 64 of the contact arm 62.

The vibration damping device (30) further includes a driving element (70) supported by the frame (40). The driving element 70 includes an air cylinder 72 provided on the frame 40, a slide cam 73 provided on the rod 72a of the air cylinder, a bearing 74 on the inner ring 63, (Not shown). By the bearing 74, the driving element 70 is coupled to the inner ring 63 so as to be rotatable relative to each other. The driving element 70 may further include a regulator 72b for adjusting the air pressure supplied to the air cylinder 72. [

The outer ring 75 has a pin 76 extending in the radially outward direction and the frame 40 has a groove 77 formed to extend in the direction of the axis of rotation 11. [ The pin 76 fits into the groove 77 and is also slidable along the groove 77. The slide cam 73 has an inclined surface 73a located between the outer ring 75 and the frame 40 and engageable with the pin 76. [ The inclined surface 73a is arranged so as to press the pin 76 from the upstream side to the downstream side when the rod 72a of the air cylinder 72 is elongated. As described above, since the air cylinder 72, the slide cam 73, and the outer ring 75 move the contact portion 50 from the first position 50a to the second position 50b, the inner ring 63 To slide against the tubular element 42, thereby pivoting the contact arm 62 against the tubular element 42.

Next, the operation of the anti-vibration device according to the present invention will be described.

As shown in Fig. 5, when the bar stock B is fed from the bar stocker to the bar stocker, the roller 52 is in the first position 50a. 2, the roller 52 is moved to the second position 50b, and the rod B is moved to the rotational axis 11 (see Fig. 2) by grasping the rod B with the chuck 15 of the main shaft 12, ).

Specifically, by operating the air cylinder 72, the rod 72a is extended and the slide cam 73 is moved. The pin 76 provided on the outer ring 75 is pressed toward the downstream side by the inclined surface 73 of the slide cam 73. [ The outer ring 75 is coupled to the inner ring 63 through the bearing 74 so that the inner ring 63 moves in the downstream direction along the tubular element 42. Thereby, the second end 65 of the three contact arms 62 engaged with the inner ring 63 is pressed toward the downstream side, and the contact arm 62 is pivoted against the spring 66. As a result, the three rollers 52 are moved from the first position 50a to the second position 50b, and they are brought into contact with the rod material B, thereby holding the rod material B on the rotational axis line 11 . The roller 52 grasps the bar material B with a force corresponding to the pressure regulated by the regulator 72b.

When the spindle 12 is rotated with the roller 52 in the second position 50b, the rod B is rotated, whereby the roller 52, the contact arm 62, the inner ring 63, Is rotatable together with the rod (B). On the contrary, the outer ring 75, the slide cam 73, the air cylinder 72, and the frame 40 do not rotate.

When the roller 72 is moved from the second position 50b to the first position 50a by operating the air cylinder 72 and the rod 72a is pulled in, To the second position 50b from the first position 50a to the second position 50b. The contact arm 62 pivots by the force of the spring 66 and moves the roller 52 to the second position 50b while moving the outer ring 75 and the inner ring 63 toward the upstream side, To the first position 50a.

The rod B is rotated while being firmly held by the roller 52 according to the magnitude of the force generated by the air cylinder 72 so that the vibration of the rod B is restricted. As a result, the machining accuracy of the bar material B is enhanced. There is no relative movement in the rotating direction between the bar material B and the roller 52 so that the roughening of the bar material B can be performed not only in the case where the cross section of the bar material B is circular but also in the case of a polygonal shape, . Further, since there is no relative rotation between the bar material B and the roller 52, it is not necessary to provide a stopper provided in the conventional anti-vibration device. During rotation, the bar material B is pressed against the roller 52 with a strong force It is possible to keep.

Since the rotation axis 53 of the roller 52 is arranged so that the roller 52 rotates when the bar material B moves in the direction A of the rotation axis 11, The vibration of the rod material B can be prevented from being generated without causing resistance between the rod material B and the roller 52 even while the risk material rod B is rotating and moving in the direction A of the rotational axis 11 Can be regulated.

The bar material B is fed from the bar feeder 20 to the bar tumbler 10 in a state where the roller 52 is moved to the second position 50b, The bar material B may be held on the rotary shaft 11 by grasping the bar material B with the chuck 15 of the rotary shaft 12. For example, if the length of the bar material B is long, if the front end portion Bb of the bar material B is gripped by the chuck 15 at first, the bar material B becomes oblique with respect to the rotational axis 11 And may be gripped by the chuck 15 in some cases. When the rod material B is gripped by the chuck 15 while the roller 52 is moved to the second position 50b, . As a result, it is possible to effectively regulate the vibration of the bar material (B).

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the invention described in the claims, Of course.

In the embodiment of the vibration preventing device according to the present invention, when the abutting portion 50 and the tubular element 42 rotate together with the bar stock B while the abutting portion 50 is in contact with the bar stock B, The shape of the element 60 and the driving element 70 is arbitrary. The shape of the moving element and the driving element can be arbitrarily designed according to the following modification.

For example, in the above embodiment, a portion of the moving element 60 is a contact arm 62 pivotally supported on the tubular element 42, but may be moved or radially moved relative to the tubular element 42 Or may be an element that is slidably supported. Further, in the above embodiment, the contact arm 62 may be pivotable about an axis 44 extending perpendicularly to the axis of rotation 11, but may be pivotable about an axis extending in a different direction . For example, the contact arm 62 may be pivotable about an axis extending in the direction of the axis of rotation 11.

A part of the moving element 60 is an inner ring 63 supported by the tubular element 42 so as to be slidable in the axial direction 11, Or may be an element movable in the rotational direction.

In the above embodiment, the moving element 60 has two elements (the contact arm 62 and the inner ring 63), but may be composed of one element or three or more elements .

In the above embodiment, the driving element 70 is configured such that the bearing 74 is coupled to the rushing element 60, but the driving element 70 and the moving element 60 are relatively rotatable and slidable .

In the above embodiment, the contact portion 50 is the roller 52, but it may be an element that slides in contact with the bar material B. The element may be integrally formed with the moving element 60 or may be separately formed. In the above embodiment, the roller 52 is arranged so as to rotate along the bar material B moving in the direction A of the rotation axis 11 (first arrangement), but the rotation axis 53 and the axis of rotation 11 of the bar material B are parallel to each other (second arrangement). The second arrangement of the rollers 52 is such that when the force to rotate the moving element 60 and the tubular element 42 is relatively small (for example, when the outer diameter of the bar material B is small ]. It is also contemplated to provide a contact arm 62 having a first arrangement of rollers 52 and a contact arm 62 having a second arrangement of rollers 52 so that the contact arm 62 is in contact with the tubular element 42, And the contact arm 62 can be exchanged. In the above embodiment, three contact portions 50 are provided, but two contact portions may be provided or four or more contact portions may be provided.

In the above embodiment, the vibration damping device 30 is supported by the rod feeder 10, but may also be supported by the rod processing machine 20.

The vibration damping device 30 not only restricts the vibration of the rotating rod material B but also prevents vibration of the rod material B connected to the rear end of the rod material B and pushing the rod material B toward the rod- The vibration of the plunger 22 may be regulated. The air pressure acting on the cylinder 52 may be changed by the regulator 72b to adjust the pressure for gripping the rod material B and the pressure for gripping the rod 22. [

10: Sawing machine
11:
20: Rod feeder
22: Pusher
30: Anti-vibration device
42: cylindrical element
50:
50a: First position
50b: second position
52: Roller
60: Moving element
62: contact arm (pivot element)
63: Inner ring (sliding element)
66: spring
70: driving element
72: Air cylinder
72b: regulator
73: Slide cam
74: Bearings
75: outer ring
76: pin
77: Home
A: Direction of rotation axis
B: Sewing

Claims (11)

A vibration damping device for a bar material used for a bar material processing machine or a bar material feed machine for feeding a bar material to a bar material processing machine,
A tubular element disposed coaxially with the axis of rotation of the bar material and rotatably about the axis of rotation and supported by a bar material processing machine or a bar material feeder,
A plurality of contact portions movable between a first position spaced from the bar and a second position contacting the bar to hold the bar material on the axis of rotation,
A moving element coupled to the contact portion and movably supported on the tubular element to move the contact portion from a first position to a second position;
A drive element supported on the bobbin mill or the bar feeder and relatively rotatably coupled to the moving element for moving the moving element relative to the tubular element to move the contact from the first position to the second position, Have,
Wherein when the contact portion is in the second position, the contact portion, the moving element and the tubular element are rotatable by rotation of the rod, and the drive element does not rotate. A vibration damping device for a platen, used for a rod processing machine or a rod feeder for pushing a rod to a rod processing machine by pushing the rod with a plunger,
A tubular element disposed coaxially with the axis of rotation of the bar material and rotatably about the axis of rotation and supported by a bar material processing machine or a bar material feeder,
A plurality of contacts movable between a first position spaced from the platen and a second position contacting the platen to hold the plunger on the axis of rotation,
A moving element coupled to the contact portion and movably supported on the tubular element to move the contact portion from a first position to a second position;
A drive element supported on the bobbin mill or the bar feeder and relatively rotatably coupled to the moving element for moving the moving element relative to the tubular element to move the contact from the first position to the second position, And the vibration preventing device. The vibration damping device according to claim 1 or 2, wherein the contact portion is constituted by a roller. 4. The apparatus according to claim 3, characterized in that the rotation axis of the roller is arranged to rotate the bar material or the roller in contact with the bar when the bar moves in the direction of the rotation axis. 5. The apparatus according to claim 4, wherein when the chuck of the main shaft of the machine is grasped, the roller is in contact with the rod or the abutment. 3. The air conditioner according to claim 1 or 2, wherein the driving element has an air cylinder and a regulator for adjusting an air pressure supplied to the air cylinder, And the grip of the plunger is gripped. 3. An anti-vibration device according to claim 1 or 2, characterized in that the moving element has a pivoting element pivotally supported on the tubular element. 8. A device according to claim 7, characterized in that the moving element has a sliding element slidably supported on the tubular element to pivot the pivot element. 9. A device according to claim 8, characterized in that the sliding element is slidable in the direction of the axis of rotation with respect to the tubular element. 9. A device according to claim 8, characterized in that the drive element is coupled to the sliding element via a bearing. 3. An anti-vibration device according to claim 1 or 2, characterized in that the contact portion is urged to the first position by a spring provided between the moving element and the tubular element.

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