JP3896433B2 - Stabilizer for bar feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steadying device for a bar fed by a bar feeder.
[0002]
[Prior art]
In the conventional steady rest, the receiving member that supports the bar from below is fixed at a fixed position of the bar feeder.
[0003]
[Problems to be solved by the invention]
Therefore, depending on the setting of the mounting position and the number of the receiving members, there is a possibility that the vibration state of the bar cannot be appropriately handled.
[0004]
An object of the present invention is to provide a steady rest device with an increased degree of freedom of adjustment.
[0005]
[Means for Solving the Problems]
Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments of the present invention. However, the present invention is not limited to the illustrated form.
[0006]
According to the first aspect of the present invention, there is provided a steady rest (20) having a receiving portion (21, 21) for the rod (7), and the steady rest (20) of the rod (7) by the rod feeder (2). A support means (10) that supports the feed direction in a position-adjustable manner , and the support means includes a rail (10) extending in the feed direction of the bar (7), and the bar ( The above-described object is achieved by the steadying device for the bar feeder in which the rail (10) is provided so as to be adjustable in height with respect to the feed path of 7) . According to the present invention, the steady rest (20) can be installed at a desired position in the feed path of the bar (7). Further, when a plurality of steady rests (20) are attached to one rail (10), their heights can be adjusted collectively.
[0007]
According to a second aspect of the present invention, in the steady rest apparatus according to the first aspect, the steady rest (20) can be attached to and detached from the support means (10). According to the present invention, the number of installation can be adjusted by attaching and detaching the steady rest (20).
[0008]
A third aspect of the present invention, the steadying device according to claim 1, steady rest (20) is characterized in that it is mounted so as to sandwich the rail (10) on the rail (10). According to the present invention, since the rail (10) is only sandwiched by the steady rest (20), the position adjustment and attachment / detachment of the steady rest (20) can be realized with a simple structure.
[0009]
According to a fourth aspect of the present invention, in the steady rest apparatus of the third aspect, the steady rest (20) includes a pair of rotatable rollers (21, 21) for receiving the bar (7) and rollers (21, 21). The mounting plate (22) includes a notch (22a) for guiding the bar (7) between the rollers (21, 21). According to the present invention, the bar (7) is guided to the notch (22a) and accurately guided between the rollers (21, 21).
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 4 is a diagram showing a schematic configuration of a bar feeder 2 in which the steady rest device 1 according to the embodiment of the present invention is incorporated. The bar feeder 2 has a base 3 installed horizontally via legs (not shown), an inclined shelf 4 and a guide pipe 5 arranged on the base 3. The tip of the base 3 (the left end in the figure) faces the cover 6a of the NC lathe 6, and the main shaft 6b of the NC lathe 6 and the guide pipe 5 are arranged coaxially.
[0011]
A plurality of bars 7 are placed on the inclined shelf 4 (see FIG. 1). When the bar 7 is introduced, the single bar 7 held at the lowermost stage of the inclined shelf 4 by the take-out mechanism (not shown) attached to the inclined shelf 4 gets over the stopper 4a to guide the guide pipe 5 and the steadying device 1. It is dropped into the upper part of the intermediate steady rest 20. Then, a feed pipe (not shown) built in the guide pipe 5 advances toward the NC lathe 6 and the bar 7 is pushed out. When the tip of the bar 7 passes through the main shaft 6b of the NC lathe 6 and hits the stopper 6c, the feed pipe stops moving forward and returns to the original position before the start of introduction.
[0012]
The steady rest device 1 includes a plurality of rails 10 as support means, a plurality of intermediate steady rests 20 supported by the rails 10, and a leading end steady rest 30 provided at the tip of the base 3. As shown in FIGS. 1 to 3, a pair of rollers 21, 21 or 31, 31 is provided as a receiving part of the bar 7 on the intermediate steady rest 20 and the tip steady rest 30 by bolts 21 a, 31 a, respectively. 7 is attached so as to be rotatable about an axis parallel to the feed direction. The bar 7 which is dropped from the inclined shelf 4 and sent out by the feed pipe is prevented from shaking by these rollers 21 and 31.
[0013]
As shown in FIGS. 1 and 2, the rail 10 is formed in a strip shape having a rectangular cross section. The end portion of the rail 10 is fixed to a flange 4c provided on the column 4b of the inclined shelf 4 by a plurality of bolts 11, whereby the rail 10 is supported in parallel with the base 3. In addition, the rail 10 at the tip of the base 3 is supported in a cantilevered state by the columns 4b of the single inclined shelf 4, and the other rails 10 are supported by the columns 4b at both ends (see FIG. 4).
[0014]
An adjusting screw 12 is screwed into the flange 4c. By adjusting the protruding amount of the adjusting screw 12 from the flange 4c and tightening the bolt 11, the height of the rail 10 with respect to the base 3 can be changed to center the main shaft 6b and the intermediate steady rest 20. Therefore, it is not necessary to adjust the height of each intermediate steady rest 20 individually.
[0015]
The intermediate steady rest 20 has a mounting plate 22 on which the rollers 21 and 21 are mounted, and a nut plate 23 applied to the lower surface side of the rail 10. By screwing and tightening two bolts 24 attached to the mounting plate 22 into the nut plate 23, the intermediate steady rest 20 is attached to the rail 10 so as to sandwich the rail 10. According to this configuration, the steady rest 20 can be restrained by loosening the bolt 24 and moving the intermediate steady rest 20 to a desired position on the rail 10 and tightening the bolt 24 again at that position. In addition, the number of installation can be increased or decreased by attaching / detaching the intermediate steady rest 20 to / from the rail 10. However, in order to avoid interference between the intermediate steady rest 20 and the feed pipe, it is necessary to dispose the middle steady rest 20 closer to the distal end side of the base 3 than the position when the feed pipe is advanced to the maximum. A cutout 22a is formed in the upper portion of the mounting plate 22 so as to cut into a substantially V shape. The bar 7 dropped from the inclined shelf 4 is guided to the notch 22a and is accurately guided between the rollers 21 and 21.
[0016]
As shown in FIG. 1, an air cylinder 40 is attached to the base 3 so as to be rotatable about a fulcrum pin 41. The piston rod 40a of the air cylinder 40 is rotatably connected to the cover drive arm 42. When the piston rod 40a expands and contracts, the cover drive arm 42 rotates around the fulcrum pin 43, and the safety cover 44 attached to the cover drive arm 42 moves accordingly between the solid line position and the imaginary line position in FIG. To do. At the position of the solid line, the lower surface of the safety cover 44 is positioned in contact with the upper end of the mounting plate 22, whereby the conveying path of the bar 7 is covered with the safety cover 44.
[0017]
As shown in FIG. 3, the tip steady rest 30 is fixed to the bracket 3 a attached to the tip of the base 3 by a bolt 32 and to the attachment plate 33 by a bolt 34. And a second mounting plate 35. The rollers 31, 31 are rotatably mounted on the mounting plate 35.
[0018]
The present invention is not limited to the above-described embodiment, and can be implemented with various modifications. For example, the receiving part of the bar 7 is not limited to a roller, and various means may be used. The steady rest 20 may be attached to the rail 10 by connecting the attachment plate 22 and the nut plate 23 to each other at one end thereof and fastening only the other end with a bolt or the like. The rail 10 may be attached to the upper surface of the base 3. The tip steady rest 30 may be replaced with an intermediate steady rest 20.
[0019]
【The invention's effect】
As described above, according to the present invention, since the steady rest for the bar is provided so that the position can be adjusted, the degree of freedom of adjustment of the steady rest increases, and the position of the steady rest according to the length of the bar and the vibration situation. Is changed to support the bar under optimum conditions, thereby enabling various bars to be smoothly fed out. Further, it is possible to reduce the labor required for adjusting the height of the steady rest with respect to the feed path of the bar. In the invention of claim 2, since the number of the steady rests can be changed as necessary, the degree of freedom of adjustment can be further increased and the steady rest conditions can be optimized. Since the position and the number of steady rests can be adjusted simply by providing a steady rest with a structure sandwiching the structure, the degree of freedom of adjustment of the steady rest apparatus can be increased while suppressing the complexity of the structure. Then, the bar is guided to the notch of the mounting plate and accurately guided between the rollers.
[Brief description of the drawings]
FIG. 1 is a view showing a state in which a steady rest according to an embodiment of the present invention is viewed from a direction orthogonal to a bar.
FIG. 2 is a cross-sectional view taken along the axial direction of the bar for the steady rest device of FIG. 1;
3A and 3B are diagrams showing a tip steady rest provided in the steady rest device of FIG. 1, in which FIG. 3A is a view showing a state seen from a direction orthogonal to the rod, and FIG. 3B is a view along the axial direction of the rod. Sectional drawing.
FIG. 4 is a diagram showing an outline of a bar feeder in which the steady rest device of the present invention is incorporated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stabilizer 2 Bar supply machine 3 Base 4 Inclined shelf 7 Bar 10 Rail 20 Intermediate steady stopper 21 Roller 22 Mounting plate 23 Nut plate 30 Tip steady rest

Claims (4)

A steady rest provided with a receiving portion for the bar material, and a support means for supporting the steady rest in a feed direction of the bar material by a bar material feeder .
The support means comprises a rail extending in the feed direction of the bar;
A bar stopper for a bar feeder, wherein the rail is provided so that the height of the rail can be adjusted with respect to a feed path of the bar by the bar feeder.   The steady rest according to claim 1, wherein the steady rest is detachable from the support means. The steady rest is steady rest according to claim 1, characterized in that it is mounted on the rail so as to sandwich the rail. The steady rest includes a pair of rotatable rollers for receiving a bar, and Including a mounting plate on which a roller is mounted,
2. The steady rest according to claim 1, wherein the mounting plate has a notch for guiding the bar between the rollers.

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