JP2004330324A - Ring clamping unit and ring cutting-off apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ring clamping unit which does not require an additional apparatus for holding a cut-off ring product and does not require to provide a pit on a floor of a factory even when a blank of the ring has a comparatively large radius. <P>SOLUTION: The ring clamping unit comprises a turntable 37 for mounting and fixing the ring W to be cut off, a plurality of first clamps 47... 47 for pushing the inside peripheral surface of the ring W neighboring the turntable outward, and a plurality of second clamps 49... 49 for pushing the inside peripheral surface of the part R to be cut off of the ring W outward, the part R of the ring W being separate from the turn table. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ring clamp unit and a ring cutting device, and more particularly to a ring clamp unit that presses and clamps a ring from an inner peripheral surface thereof and a ring cutting device that cuts a ring material clamped by the ring clamp unit. .
[0002]
[Prior art]
As prior art of a ring clamp unit and a ring cutting device, there is one shown in FIGS. Hereinafter, these prior arts will be briefly described with reference to the drawings.
[0003]
First, a band saw machine 101 shown in FIG. 6 is provided with a housing 104 pivotally attached to a base 102 by a pivot shaft 103, and the housing 104 has a band saw blade that can circulate in the housing 104. 105 is provided. On the other hand, the ring material W to be cut is fixed to a turntable 107 of the ring material holding device 106 by a clamp 108.
[0004]
In the above configuration, the ring material W is cut by the band saw blade 105 as the housing 104 swings about the pivot shaft 103 and descends. As shown in FIG. 7, the cut ring product R falls on the support bar 109 and is held by the support bar 109 in order to prevent the ring product R from falling on the factory floor.
[0005]
Further, as a device for preventing the cut ring product R from dropping to the factory floor, there is a ring product receiving stand 110 shown in FIG.
[0006]
Further, in the case where the radius of the ring material W is relatively large, a pit 111 is dug and provided on the factory floor as shown in FIG. There is a prior art for installing the holding device 106.
[0007]
[Problems to be solved by the invention]
However, in the case of the above-described ring clamp unit, the clamp 108 clamps the ring material W, but does not clamp the ring product R. Therefore, the support bar 109 shown in FIG. 7 or the ring product receiver shown in FIG. The table 110 was needed. Therefore, since an additional device is required, the cost of the entire device is increased, and an additional space for a layout in a factory is required.
[0008]
On the other hand, when the radius of the ring material W is relatively large, it is necessary to dig the pit 111 on the factory floor as described above, which has led to an increase in factory equipment costs.
[0009]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to eliminate the need for an additional device for holding a cut ring product and to use a relatively large ring material radius. However, it is an object of the present invention to provide a ring clamp unit and a ring cutting device that do not require a pit on a factory floor.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a ring clamp unit, which presses a turntable on which a ring to be cut is placed and fixed and an inner peripheral surface of the ring near the turntable to the outside. A ring clamp unit comprising: a plurality of first clamps; and a plurality of second clamps for pressing an inner peripheral surface of the ring, which is separated from the turntable, of the ring to the outside, wherein the plurality of first clamps are provided. The second clamp clamps a part of the ring to be cut off.
[0011]
According to the first aspect of the present invention, the ring to be cut is pressed outward on the inner peripheral surface of the ring near the turntable by the plurality of first clamps and the plurality of second clamps. Accordingly, the ring is fixed to the turntable by pressing the inner peripheral surface of the ring located at a position separated from the turntable outward.
[0012]
Therefore, even if the ring existing at a position separated from the turntable is cut off from the ring near the turntable, it does not fall to the floor. Therefore, a device for holding the separated ring is not required, and the cost of the device can be reduced.
[0013]
Furthermore, the installation area in a factory can be reduced compactly.
[0014]
In the invention described in claim 2, in addition to the matters specified in claim 1, the plurality of first clamps and the plurality of second clamps are radially mounted on the turntable. It is characterized by being fixedly fixed.
[0015]
According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the cut ring and the separated ring are securely fixed to the turntable.
[0016]
According to the third aspect of the invention, in addition to the matters specified in the second aspect, the first clamps and the second clamps are alternately arranged on the turntable. It is characterized by.
[0017]
According to the third aspect of the present invention, in addition to the effect of the second aspect of the present invention, the interval between the first clamps and the interval between the second clamps does not increase, and the cutting is performed. The removed ring and the separated ring are fixed to the turntable in a stable state.
[0018]
According to a fourth aspect of the present invention, there is provided a ring cutting device, wherein a turntable for mounting and fixing a ring to be cut and an inner peripheral surface of the ring near the turntable of the ring are pressed outward. A ring clamp unit having a plurality of first clamps, and a plurality of second clamps for pressing an inner peripheral surface of the ring separated from the turntable of the ring outward; A cutting machine having a cutting blade for cutting a ring, wherein the plurality of second clamps clamp a part of the ring to be cut off.
[0019]
In the invention described in claim 5, in addition to the matters specified in claim 4, the plurality of first clamps and the plurality of second clamps are radially mounted on the turntable. It is characterized by being fixedly fixed.
[0020]
According to the invention described in claim 6, in addition to the matters specified in the invention described in claim 5, the first clamps and the second clamps are alternately arranged on the turntable. It is characterized by.
[0021]
According to the fourth aspect of the present invention, the same operations and effects as those of the first to third aspects can be obtained.
[0022]
According to a seventh aspect of the present invention, in addition to the specific features of the sixth aspect, the turntable rotates about a vertical axis.
[0023]
According to the seventh aspect of the present invention, in addition to the effect of the sixth aspect of the present invention, even if the radius of the cut ring increases, the radius of the ring extends in the horizontal direction. In other words, since it extends in the horizontal direction with respect to the installation floor of the factory, it is not necessary to dig and provide a pit on the installation floor of the factory, and the installation cost can be reduced.
[0024]
In the invention according to claim 8, in addition to the matters specified in the invention according to claim 7, the ring clamp unit is provided so as to be movable in a horizontal direction, and is provided on a cutting blade of the cutting machine. It is characterized in that it is provided so that it can approach and separate from it.
[0025]
According to the eighth aspect of the present invention, in addition to the action of the seventh aspect of the present invention, the ring clamp unit moves in the horizontal direction, thereby being relatively heavy than the ring clamp unit. Since it is not necessary to move a large cutting machine, the weight and cost of the entire apparatus can be reduced.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0027]
FIG. 1 is a front view of a ring cutting device 1 according to the present invention. The ring cutting device 1 includes a cutting machine 3 and a ring clamp unit 5. The cutting machine 3 may be any of a cutting machine using a circular saw blade, a cutting machine using a reciprocating bow saw blade, and a cutting machine using a band saw blade. In the present embodiment, a band saw machine using a band saw blade is taken as an example. I will explain.
[0028]
The cutting machine 3 includes a column 9 provided vertically on the base 7, a housing 11 that slides while being guided vertically by the column 9, and cylinders 13 and 15 that move the housing 11 in the vertical direction. Contains. A main rotor 17 and a driven rotor 19 are rotatably provided on the housing 11, and a band saw blade 21 is hung over the main rotor 17 and the driven rotor 19. Since the driving rotor 17 is rotationally driven by a motor 23 which is a rotary driving means provided in the housing 11, the band saw blade 21 is hung over the driving rotor 17 and the driven rotor 19. Rotate to circulate.
[0029]
Next, the ring clamp unit 5 will be described in detail with reference to FIGS. The ring clamp unit 5 is a carriage that slides while being guided by guide members 29, 29 on rails 27, 27 that are provided on one appropriate upper surface of the base 7 in parallel with a space therebetween. 25. A motor 31 serving as a rotary drive unit such as a servomotor is fixed to the base 7, and the motor 31 is provided with a screw member 33 such as a ball screw. The screw member 33 is screwed with a nut member 35 fixed to the carriage 25. Thus, by rotating the motor 31, the carriage 25 is moved in a direction approaching / separating from the cutting machine 3, that is, in a direction indicated by a symbol Y in FIG.
[0030]
The carriage 25 is provided with a pivot shaft 36, and a turntable 37 is rotatably provided on the pivot shaft 36. A bracket 39 extending in the horizontal direction is fixed to the carriage 25, and the bracket 39 is provided with a motor 41 for rotating the turntable 37. A roller 43 is fitted on the rotation shaft of the motor 41. Therefore, by rotating the motor 41, the turntable 37 is rotated.
[0031]
On the upper surface side of the turntable 37, a plurality of inverted T-shaped grooves 45 are formed in a direction radiating from the center of the turntable 37.
[0032]
Then, a clamp, which is a main part of the present invention, is fixed to the turntable 37 with a T-shaped bolt fitted into the groove 45. The clamps are divided into two groups for mounting and fixing the ring material W, which is the material to be cut, on the turntable 37. First, the first group includes a plurality of first clamps 47, 47, 47, 47 (four in the present embodiment) that press the ring inner peripheral surface of the ring material W near the turntable outward. is there. The first clamps 47, 47, 47, 47 clamp the ring material W as the remaining material even when the ring product R as a product is cut off by cutting the upper portion of the ring material W. It is something that continues.
[0033]
On the other hand, the other second group of clamps includes a plurality of second clamps 49, 49, 49, 49 (49, 49, 49) that press outward the inner peripheral surface of the ring material W separated from the turntable. 4 in the present embodiment). The second clamps 49, 49, 49, 49 continue to clamp the ring product R side when the ring product R as a product is cut off by cutting the upper part of the ring material W. is there. Therefore, even if the ring material W is cut off by the band saw blade 21 into the remaining material of the ring material W and the ring product R, since the ring product R is fixed to the turntable 37, it is necessary to provide a separate holding means. There is no.
[0034]
The number of the inverted T-shaped grooves 45 is equal to the number of the first clamps 47, 47, 47, 47 and the second clamps 49, 49, 49, 49 (eight in the present embodiment). Although formed at each corresponding position of the turntable 37, three inverted T-shaped grooves 45 are illustrated and the other five inverted T-shaped grooves 45 are illustrated in order to avoid complication of the drawing. The illustration of the groove 45 is omitted.
[0035]
On the other hand, around the carriage 25, a groove member 51 for receiving cutting oil and chips (chips) supplied to a cutting portion when the ring material W is cut by the band saw blade so as to surround the carriage 25. It is provided in. Further, in order to collect the cutting oil and the like, a plurality of pipes 53, 53 are vertically connected to the lower surface of the groove member 51, and lower ends of the plurality of pipes 53, 53 are connected through ducts 55, 55. It is connected to a storage tank built in the carriage 25. Further, a flange 57 is attached to the outer circumference of the turntable 37 so as to surround the turntable 37 over the entire circumference. Accordingly, the cutting oil or the like that has not fallen into the tray formed on the upper surface of the base 7 in order to collect the cutting oil or the like is stored in the storage tank built in the carriage 25 through the groove member 51 described above. Therefore, it is possible to prevent the cutting oil or the like from dropping on the floor on which the device is installed.
[0036]
Next, the configuration of the first clamps 47, 47, 47, 47 and the second clamps 49, 49, 49, 49 will be described with reference to FIGS. As shown in FIG. 5, each clamp 47 includes a slider section 65, a cylinder section 67, and a piston section 69. The piston portion 69 has a configuration in which a piston portion is slidably incorporated in the cylinder portion 67 and a rod portion protrudes from the cylinder portion 67.
[0037]
After sliding the turntable 37 in the radial direction along the inverted T-shaped groove 45, slide the slide part 65 to the turntable 37 with the T-shaped bolt at an appropriate position. Fix it. Then, by supplying pressurized oil from a hydraulic pressure generator to the cylinder portion 67 and projecting the piston portion 69 so as to extend, the distal end surface of the piston portion 69 contacts the inner peripheral surface of the ring material W. Touch and press.
[0038]
Accordingly, two first clamps 47, 47 are arranged on a line passing through the center of the turntable 37 so that the pistons 69 are directed outward from each other. , The distal end surface of the piston portion 69 presses the inner peripheral surface of the ring material W near the turntable 37 outward. The ring material W is fixed to the turntable 37 by the piston portions 69, 69 of these two first clamps 47, 47.
[0039]
On the other hand, each clamp 49 also includes a slider portion 59, a cylinder portion 61, and a piston portion 63. The piston portion 63 has a configuration in which a piston portion is slidably built in the cylinder portion 61 and a rod portion protrudes from the cylinder portion 61. In particular, in order to press the inner peripheral surface of the ring material W upwardly away from the turntable 37 (the inner peripheral surface of the ring R to be cut off), the cylinder portion 61 is moved upward. It has a configuration in a stretched state.
[0040]
After sliding the turntable 37 in the radial direction along the inverted T-shaped groove 45, slide the slider 59 to the turntable 37 with the T-shaped bolt at an appropriate position. Fix it. Then, by supplying pressure oil from a hydraulic pressure generator to the cylinder portion 61 and projecting the piston portion 63 so as to extend, the distal end surface of the piston portion 63 contacts the inner peripheral surface of the ring material W. Touch and press.
[0041]
Accordingly, the two second clamps 49, 49 are shifted at an angle of 45 or 90 degrees with respect to the two first clamps 47, 47 about the center of the turntable 37 as an axis, and The pistons 63 are arranged on a line passing through the center so that the pistons 63 face each other. Then, by supplying the pressure oil from the hydraulic pressure generator to each of the cylinder portions 61, the distal end surface of the piston portion 63 presses the inner peripheral surface of the ring material W separated from the turntable 37 outward. I do. The ring material W is fixed to the turntable 37 by the piston portions 63, 63 of these two second clamps 49, 49. Due to this fixation, even if the upper part of the ring material W is cut off by a cutting process into a ring product R as a product, the ring product R side is continuously clamped. , It is not necessary to provide a separate holding means.
[0042]
Next, the operation of the embodiment of the present invention will be described.
[0043]
First, the ring material W to be cut is placed on the upper surface of the turntable 37, and the center of the ring material W is aligned with the approximate center of the turntable 37. Next, the first clamps 47, 47 and the second clamps 49, 49 are slid on the turntable 37 along the inverted T-shaped groove 45 to contact the inner peripheral surface of the ring material W. Move. Then, the ring material W is fixed to the upper surface of the turntable 37 by supplying pressure oil from the hydraulic pressure generator to the first clamps 47, 47 and the second clamps 49, 49.
[0044]
After confirming that the ring material W is fixed to the upper surface of the turntable 37, the housing 11 of the cutting machine 3 is lowered by driving the cylinders 13 and 15. Note that the housing 11 is provided so that the main rotor 17 and the subordinate rotor 19 can be lowered to the positions indicated by reference numerals 17A (the main rotor) and 19A (the subordinate rotor). The vertical position of the housing 11 is adjusted so that the position matches the vertical position of the ring material W to be cut. Then, the motor 23 is driven to rotate, and the band saw blade 21 is rotated counterclockwise in FIG. Accordingly, the cutting direction of the band saw blade 21 is the direction indicated by the reference symbol P in FIG.
[0045]
While maintaining the state in which the band saw blade 21 is rotated, the motor 31 is driven to rotate, and the carriage 25 is moved rightward in FIG. 2 so that the carriage 25 approaches the band saw blade 21. Then, the ring material W is cut by the band saw blade 21 by further moving the carriage 25 to the right in FIG. During this cutting, the turntable 37 is rotated in the Q direction as shown in FIG. That is, the turntable 37 and the ring material W are rotated in the Q direction in a direction opposite to the P direction, which is the cutting direction of the band saw blade 21. As described above, by rotating the ring material W in the Q direction, the amount of movement of the carriage 25 in the Y-axis direction can be reduced, and the size of the entire apparatus can be reduced. Furthermore, the rotation of the ring material W in the Q direction can improve the surface roughness of the cut surface of the ring material W and the ring product R.
[0046]
As described above, the present invention has been described by taking the above-described embodiment as an example. However, the present invention is not limited to the embodiment, and the improvement and modification of the configuration and the replacement of members and the like are based on the present invention. It is easily possible.
[0047]
【The invention's effect】
According to the invention as set forth in claim 1, the ring to be cut is pressed outward on the inner peripheral surface of the ring near the turntable by the plurality of first clamps, and by the plurality of second clamps. The ring is fixed to the turntable by pressing the inner peripheral surface of the ring located at a position separated from the turntable outward.
[0048]
Therefore, even if the ring existing at a position separated from the turntable is cut off from the ring near the turntable, it does not fall to the floor. Therefore, a device for holding the separated ring is not required, and the cost of the device can be reduced.
[0049]
Furthermore, the installation area in a factory can be reduced compactly.
[0050]
According to the invention described in claim 2, since the plurality of first clamps and the plurality of second clamps are radially placed and fixed on the turntable, the cut ring and the The separated ring is securely fixed to the turntable.
[0051]
According to the third aspect of the present invention, since the first clamps and the second clamps are alternately arranged on the turntable, an interval between the first clamps and a second clamp are provided. The ring to be cut and the separated ring are fixed to the turntable in a stable state without increasing the distance between the rings.
[0052]
According to the inventions set forth in claims 4 to 6, the same effects as those of the above-described claims 1 to 3 are obtained.
[0053]
According to the invention described in claim 7, since the turntable rotates about a vertical axis, even if the radius of the cut ring increases, the radius of the ring extends in the horizontal direction. In other words, since it extends in the horizontal direction with respect to the installation floor of the factory, it is not necessary to dig and provide a pit on the installation floor of the factory, and the installation cost can be reduced.
[0054]
According to the invention described in claim 8, the ring clamp unit is provided so as to be movable in the horizontal direction, and is provided so as to be able to approach and separate from the cutting blade of the cutting machine. By moving the ring clamp unit in the horizontal direction, it is not necessary to move a cutting machine having a relatively large weight than the ring clamp unit, so that the weight of the entire apparatus and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view of a ring cutting device provided with a ring clamp unit according to an embodiment of the present invention.
FIG. 2 is a side view of a ring cutting device provided with a ring clamp unit according to the embodiment of the present invention.
FIG. 3 is a plan view of a ring cutting device including a ring clamp unit according to the embodiment of the present invention.
FIG. 4 is an enlarged sectional view of a part of the ring clamp unit according to the embodiment of the present invention.
FIG. 5 is an enlarged sectional view of a part of the ring clamp unit according to the embodiment of the present invention.
FIG. 6 is a front view of a ring cutting machine according to the related art.
FIG. 7 is a side view of a ring cutting machine according to the related art.
FIG. 8 is a front view of a ring cutting machine according to the related art.
FIG. 9 is a side view of a ring cutting machine according to the related art.
[Explanation of symbols]
1 Ring Cutting Device 3 Cutting Machine 5 Ring Clamp Unit 37 Turntable 47 First Clamp 49 Second Clamp W Ring (Ring Material)
R ring (Ring product)

Claims (8)

A turntable for mounting and fixing the ring to be cut,
A plurality of first clamps for pressing the ring inner peripheral surface of the ring near the turntable outward;
A plurality of second clamps that press the ring inner peripheral surface of the ring separated from the turntable to the outside,
The ring clamp unit, wherein the plurality of second clamps clamp a cut-off portion of the ring. The ring clamp unit according to claim 1, wherein the plurality of first clamps and the plurality of second clamps are radially mounted and fixed on the turntable. The ring clamp unit according to claim 2, wherein the first clamps and the second clamps are alternately arranged on the turntable. A turntable for mounting and fixing the ring to be cut, a plurality of first clamps for pressing the inner peripheral surface of the ring near the turntable outward, and a plurality of first clamps separated from the turntable of the ring; A ring cutting device comprising: a ring clamp unit having a plurality of second clamps for pressing an inner peripheral surface of a ring outward; and a cutting machine having a cutting blade which moves in a horizontal direction to cut the ring. And
The ring cutting device, wherein the plurality of second clamps clamp a part of the ring to be cut off. The ring cutting device according to claim 4, wherein the plurality of first clamps and the plurality of second clamps are radially mounted and fixed on the turntable. The ring cutting device according to claim 5, wherein the first clamps and the second clamps are alternately arranged on the turntable. The ring cutting device according to claim 6, wherein the turntable rotates about a vertical axis. The ring cutting device according to claim 7, wherein the ring clamp unit is provided so as to be movable in a horizontal direction, and is provided so as to be able to approach and separate from a cutting blade of the cutting machine. .

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