JP3507450B2 - Work cutting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a work such as a shortened end material or a short material, and more particularly to a short material or the like which is positioned with the cutting surface as a positioning reference surface. The present invention relates to a cutting device for cutting a workpiece.

[0002]

2. Description of the Related Art Conventionally, if a long steel material is repeatedly cut into a suitable size by a cutting machine such as a saw machine, short mill ends and short length materials are produced as a residual material. This short material is appropriately stored in a storage location, and if necessary, set again in a cutting machine and cut.

[0003]

When the length of the short material is approximately equal to the diameter of the steel material and is relatively long, it is set in a vise device in a cutting machine such as a saw machine so that its axial center is horizontal and the horizontal direction is set. It is relatively easy to position and clamp the cut surface of the short material so as to be parallel to the vertical cutting plane of the cutting machine. However, when the length of the short material becomes relatively short compared to the diameter, when setting it in the vice device of the cutting machine so that the axis of the short material becomes horizontal, the short material slightly moves around the vertical axis. Since it may rotate, it is troublesome to position the cutting surface of the short material so as to be parallel to the vertical cutting plane of the cutting machine, and in order to set the cutting dimension accurately, There is a problem in that it is difficult to accurately position the cutting position of the short piece with respect to the vertical cutting plane.

Further, even if the short material is accurately positioned and cut, the product and the residual material after cutting will have a thinner disc shape, and the product and the residual material will be separated from the cutting position. There is a problem that it is troublesome to carry it out.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional problems as described above, and supports a lower surface of a work to be cut and is vertically movable relative to a clamp vise. In order to horizontally cut the table, the clamp vise above the support table, which can clamp and fix the work from a horizontal direction intersecting the axis of the work, and the work clamped and fixed to the clamp vise. In a cutting device provided with a cutting tool that is relatively movable in the horizontal direction below the clamp vise and intersects the axis of the work, the cutting surface of the work is
The support base is supported so that it is supported by the support base.
The workpiece is passed horizontally with the cut surface of the workpiece facing down.
The height position of the upper surface of the support table provided in order to carry out the,
It is provided at a height position substantially equal to the upper surface height position of the support base at the origin position in the vertical direction of the support base.

The present invention also relates to the above cutting device.
The work fixing means that can fix the work.
It is a configuration prepared for a pedestal.

According to a third aspect of the present invention, in the work cutting method according to the first or second aspect, the support base is always in contact with the lower surface of the work or is slightly separated from the lower surface of the work when cutting the work. It is a cutting method in the open state.

According to a fourth aspect of the present invention, there is provided a support base for supporting a lower surface of a work to be cut, and a clamp capable of being clamped and fixed above the support base in a direction intersecting the axis of the work. And a cutting tool that is relatively movable in a direction intersecting the axis of the work below the clamp vise for cutting the work clamped and fixed to the clamp vise. is there.

According to a fifth aspect of the present invention, in the cutting device according to the fourth aspect, the clamp vise is provided with an upper clamp vise and a lower clamp vise, and the cutting tool has a shaft of the work between the upper and lower clamp vise. It is configured to move relatively in a direction intersecting with the heart.

According to a sixth aspect of the present invention, in the cutting device according to the fourth or fifth aspect, the support base always supports the lower surface of the work, or a state in which the support is slightly separated from the lower surface of the work when cutting the work. It is a configuration.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 conceptually and schematically shows the overall configuration of a cutting device according to an embodiment of the present invention.

Now, referring to FIG. 1, a gate-shaped support frame 5 for straddling the base frame 3 is integrally attached to an appropriate position of an appropriately box-shaped base frame 3 in the cutting device 1, A cutting head 7 is attached to the front side of the support frame 5.

The cutting head 7 corresponds to, for example, a saw blade housing in a large horizontal band saw, and support plates 9A and 9B are vertically provided on both left and right sides of a wheel support frame 9 provided in the cutting head 7. A drive wheel 11 and a driven wheel 13 which are rotationally driven by a drive motor (not shown) are rotatably mounted on both of the support plates 9A and 9B, similarly to a normal large band saw machine. . Both holes 11,
The axis of 13 is horizontal, and an endless band saw blade 15 is wound around both wheels 11 and 13 as an example of a cutting tool with the tooth tips facing forward. A saw blade guide for guiding and supporting the back side horizontally is provided below the support plates 9A and 9B in the vicinity of a portion of the band saw blade 15 which runs in the left-right direction and cuts a short material (work). 17A, 1
Left and right guide arms 19A, 19 with 7B at the tip
B is mounted horizontally.

Guide rails 21A and 21B, which are long in the front-rear direction, are provided on both left and right sides of the base frame 3, and the slider 2 is mounted on both guide rails 21A and 21B.
T-shaped movable frame 2 supported on both left and right sides by 3
5 is supported so as to be movable back and forth relative to the band saw blade 15. The back-and-forth movement of the movable frame 25 is performed by an appropriate back-and-forth actuating mechanism such as a ball screw mechanism or a rack and pinion mechanism rotated by a servo motor (not shown).

An elevating frame 27, which protrudes to the front side, is supported at the center of the movable frame 25 in the left-right direction so as to be movable up and down. The upper part of the elevating frame 27 on the front side has a work (short length) to be cut. A support base 29 for horizontally supporting the lower surface of the material W, the end material, etc. W is mounted. The elevating frame 27 is vertically moved by an up-and-down operating mechanism such as a ball screw mechanism (not shown) rotationally driven by a servo motor (see FIG. 2) mounted on the movable frame 25. Therefore, the vertical position of the support base 29 can be accurately positioned by appropriately controlling the servo motor 31.

At a position above the elevating frame 27 of the movable frame 25, the work W is intersected with the axis of the work W, that is, in the horizontal direction orthogonal to the vertical axis of the work W. A clamp vise device 33 that can be clamped is attached. The clamp vise device 33 is provided with an upper clamp vise 35 and a lower clamp vise 37 which are vertically separated from each other in this example.

The upper clamp vise 35 is provided with left and right vise jaws 35L and 35R that are movable in directions toward and away from each other and that can hold the work W, and the lower clamp vise 37 is also similar to the left and right vise jaws 37L and 37L.
It is equipped with 37R. The upper and lower clamp vise 35,
Between the left side vise jaws 35L and 37L and between the right side vise jaws 35R and 37R, a gap 39 through which the band saw blade 15 can pass horizontally is formed horizontally in the front-rear direction. Then, the left and right saw blade guides 17
A and 17B are located at positions close to the gap 39 between the upper and lower vise jaws 35L and 37L and 35R and 37R.

Left and right vise jaws 35L, 35R and 37L, 37R in the upper and lower clamp vices 35, 37.
As a configuration for moving the two toward and away from each other, for example, a right-side screw is formed on the right side and a left-side screw is formed on the left side from the center portion in the left-right direction of a rotatable screw rod (not shown) that is long in the left-right direction. Left and right vice jaws 35L,
35R, 37L, and 37R are screwed together, and the screw rod is appropriately rotated by an actuator such as a motor, so that the left and right vice jaws can move toward and away from each other.

Further, the left and right vice jaws 35L, 35R and 37L, 37R of the upper and lower clamp vices 35, 37 are respectively connected to appropriate actuators composed of fluid pressure cylinders such as hydraulic cylinders, and the above actuators are operated. Accordingly, the left and right vise jaws 35L, 35R and 37L, 37R may be moved toward and away from each other.

That is, the upper and lower clamp vise 35, 3
Left and right vise jaws 35L, 35R and 37 in FIG.
Various configurations can be adopted as the configuration for moving the L and 37R in the direction of approaching and separating from each other.
The left and right vice jaws 35L, 35R and 37
One of the L and 37R may be appropriately fixed as a fixed vise jaw at a fixed position, and the other movable vise jaw may be moved toward and away from the fixed vise jaw.

Further, the upper and lower clamp vices 35,
Left and right vice jaws 35L, 35R and 3 at 37
7L and 37R are configured to operate individually for the upper and lower clamp vices 35 and 37. However, the left and right vice jaws 35 of the upper and lower clamp vices 35, 37
The L, 35R and 37L, 37R may be integrally moved. In this case, the left and right vice jaws 35L, 37L of the upper and lower clamp vices 35, 37
And the right vice jaws 35R and 37R are integrally formed, and the upper and lower clamp vices 35 and 3R are integrated.
It suffices to form slits corresponding to the gaps 39 between 7 horizontally in the left and right vise jaws in the front-rear direction.

In order to transfer the work W to and from the support table 29, a support table 41 is horizontally provided at an appropriate height position on the front side of the base frame 3.

In the above structure, the movable frame 25 is located at the reference position in the front-rear direction (the position shown in FIG. 2), and the left and right vise jaws 35L, 35R and 37L of the upper and lower clamp vices 35, 37, 37R
Are held apart from each other in an open state and the servo motor 31 is rotationally controlled to move the elevating frame 27 to the origin position in the vertical direction (for example, the height position of the upper surface of the support table 29 is substantially equal to the upper surface of the support table 41). Position or the position where the upper surface of the support table 29 is slightly lower than the upper surface of the support table 41), the short work W placed on the support table 41 is placed on the support table 41. It is placed on the support 29 (see FIG. 2).

Since the work W is a residual material as a result of cutting the product from the long material in the pre-processing, the cut surface is a flat surface within the allowable range. Therefore, holding the cut surface of the work W on the lower surface,
As shown in FIG.
When earnestly move and placed so as to be supported by the support base 29, the cut surface of the workpiece W is Ru is supported horizontally. Further, since the end surface of the residual material or the end material is usually marked to display the size, material, etc. of the work W, when the work W is placed on the support base 29 as described above, The end face becomes the top face, and the marking can be easily confirmed.

As described above, when the support base 29 is located at the vertical reference position (synonymous with the origin position), the position of the band saw blade 15 as a cutting tool is a predetermined height position and is constant. The height dimension H from the upper surface of the support base 29 at the position to the height position of the band saw blade 15 is always constant. Therefore, when trying to cut a product of size L from the work W, the servo motor 31 is rotationally controlled and the elevating frame 27 is relatively elevated by (HL) size from the reference position and positioned (FIG. 3). At this time, the ascending position of the elevating frame 27 is always detected by an appropriate elevating position detecting sensor (not shown) such as a rotary encoder provided in the servo motor 31 or a vertical linear sensor attached to the movable frame 25. Is.

As described above, the lifting frame 27 and the support base 2
After the 9 is relatively elevated and positioned, the work W is moved by the vice jaws 35L, 35R and 37L, 37R in the upper and lower clamp vices 35, 37 in a direction intersecting the work W axis, that is, the work W axis. Clamp from the horizontal direction orthogonal to. Then, next, in FIG.
In, the movable frame 25 is moved leftward (rearward) relative to the band saw blade 15 to horizontally cut the work W as shown in FIG.

When the work W is horizontally cut as described above, the lower surface of the work W may be supported by the support base 29, or the upper surface of the support base 29 may be slightly separated from the lower surface of the work W. It may be held in a state of being separated from.

When the lower surface of the work W is supported by the support base 29 when the work W is cut, the work W
Is in a state of being supported by the upper and lower clamp vices 35 and 37 and the support base 29, and the weight of the work W is distributed to the upper and lower clamp vices 35 and 37 and the support base 29, so that the work W is stably supported. It can be cut accurately. Further, when the lower product cut and separated from the work W is carried out after the cutting of the work W is completed, it is not necessary to support the product again, and the work can be carried out efficiently.

In the structure in which the lower surface of the work W is supported by the support base 29 when the work W is cut, for example, the support base 29 is provided with an appropriate work fixing means such as a magnet chuck, a scroll chuck, or a vacuum chuck. The product to be cut and separated from the work W may not move at the end of cutting, and in this case, the lower clamp vise 37 may be omitted.

When the work W is clamped and fixed by the upper and lower clamp vices 35 and 37 at the time of cutting the work W surely and the support of the work W by the support 29 is not always necessary, By lowering the support base 29 slightly, vibrations and the like at the time of cutting the work W are not transmitted to the support base 29, and an adverse effect on the vertical movement mechanism for moving the support base 29 up and down is prevented. It is possible.

As described above, the cutting of the work W is started,
When the product S is cut and separated from the work W, the movable frame 2
5 is returned to the original reference position before the start of cutting (see FIG. 5). The detection of whether or not the product S has been cut and separated from the work W is performed by, for example, detecting the load of the motor that drives the band saw blade 15 and detecting that the load has become almost zero.
Alternatively, an appropriate detection sensor (not shown) such as a limit switch corresponding to the diameter of the work W is pre-positioned in the front-rear direction along the guide rail 21A (or 21B), and the movable frame is detected by this detection sensor. The end of the cutting of the work W can be detected by an appropriate configuration such as detecting the backward movement of 25, and the movable frame 2 can be detected after the end of the cutting is detected.
5 can be automatically returned from the retracted position to the original reference position.

When the movable frame 25 is returned to the original reference position in the front-rear direction as described above, the upper clamp vise 35 slightly moves upward and the lower clamp vise 37 slightly moves downward. It is desirable to adopt a configuration. With this configuration, the movable frame 2
The lower surface of the work W and the upper surface of the product S after cutting do not rub against the band saw blade 15 at the time of return of 5.

As described above, after the movable frame 25 has returned to the reference position in the front-rear direction, the upper and lower clamp vise 3
When the workpieces 5 and 37 release the holding of the work W and the product S, the work W is directly placed on the product S supported by the support 29. Therefore, after considering the cutting margin of the band saw blade 15 and lowering and positioning the raising frame 27 and the support base 29 by a dimension corresponding to the dimension of the product to be cut next, the upper and lower clamp vices 35, 37 are used. Work W
When is again clamped and fixed, the next product can be cut from the work W (see FIG. 6).

Therefore, the work W can be immediately re-cut after the elevating frame 27 is lowered to the vertical reference position and the product S on the support table 29 is carried onto the support table 41. In this case, the support base 29 rises again to support the lower surface of the workpiece W being cut.

In the above description, the work W to the product S
Although it has been described that the upper and lower clamp vices 35 and 37 are opened together to perform the clamping and opening after cutting and separating, the clamping clamp vices 35 and 37 do not release the clamping together but use the lower clamp vice 37. The sandwiching of the product S is released, and the lifting frame 27 is lowered to carry the product S onto the support table 41. Then, the support table 29 is lifted again to support the lower surface of the work W by the support table 29, and thereafter, the clamping of the work W by the upper clamp vice 35 is released, and the position corresponding to the size of the product to be cut next is released from this position. It is also possible to perform the descending stop positioning of the support base 29, and then clamp and fix the work W by the upper and lower clamp vices 35 and 37 to start re-cutting of the work W.

When the work W as the residual material is collected without re-cutting the work W, the product S is carried out onto the support table 41 as described above, and then the support base 29 is lifted again to raise the work W. After supporting the lower surface of the workpiece W
The work W as the remaining material can be carried out onto the support table 41 by releasing the clamping of the workpiece and positioning the support base 29 at the original reference position in the vertical direction.

As already understood, a horizontal support base 2 which moves up and down relative to a band saw blade 15 as a cutting tool.
The work W is placed on the substrate 9 so that the cut surface is the lower surface, and the work W is horizontally cut by the band saw blade 15 in a state where the work W is fixed by a vice clamp. Therefore, the work W is cut and separated. The upper and lower surfaces of the product S are parallel to each other.

That is, even in the case of a short material whose axial dimension is extremely small with respect to the diameter of the work W, the cutting surface of the short material should be positioned parallel to the cutting plane of the cutting tool in the cutting machine. Is easy, and the cutting dimension of the product can be easily positioned.

By the way, the embodiment of the present invention is not limited to the above-described embodiment, and appropriate changes can be made. That is, as shown in FIG. 8, the gap 39 between the upper and lower clamp vices 35 and 37 and the band saw blade 15 are arranged so as to face each other, and the movable frame 25 moves relatively closer to the band saw blade 15. By doing so, the work W clamped and fixed by the upper and lower clamp vices 35 and 37 can be horizontally cut.

Further, as shown in FIG. 9, the cutting tool side of the band saw blade 15 moves up and down relatively, and at the P position on the back side of the band saw blade 15, the work W and the product S with respect to the support base 29.
After moving the movable frame 25 to the Q position on the tooth tip side of the band saw blade 15, the band saw blade 15 is relatively lowered to the cutting height position, and the movable frame is moved relative to the band saw blade 15. It is also possible to horizontally cut the work W by moving 25 from the Q position closer.

Further, instead of the structure in which the support base 29 moves up and down, a clamp vise device and a band saw blade (cutting tool) 15 are used.
Can be vertically moved relative to each other, and the band saw blade 15 can be moved relative to the work W clamped by the clamp vise device to horizontally cut the work W. Is. Further, although it has been described that the support base 29 moves up and down relatively in the vertical direction, the up and down direction may be an inclined direction.

[0042]

As can be understood from the above description, the cutting surface of the work is placed and positioned on a horizontal support table which can be moved up and down relative to the cutting tool, and Since the work is horizontally cut by the cutting tool, it is easy to position the cutting surface of the work W in parallel with the cutting plane of the cutting tool, and the support base is moved up and down relatively. Since the work is positioned with respect to the cutting tool by the above, the work can be cut and positioned easily, and the work can be cut into a dimension with high accuracy.

Therefore, the dimension of the work in the axial direction is extremely shorter than the diameter thereof, and even in the case of a disc-shaped short material, positioning for cutting and cutting after positioning are easy. As such, it can solve the conventional problems.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view conceptually and schematically showing a cutting device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a cutting step of horizontally cutting a work by the cutting device according to the embodiment.

FIG. 3 is an explanatory diagram of a cutting step of horizontally cutting a work by the cutting device according to the embodiment.

FIG. 4 is an explanatory diagram of a cutting step of horizontally cutting a work by the cutting device according to the embodiment.

FIG. 5 is an explanatory diagram of a cutting step of horizontally cutting a work by the cutting device according to the embodiment.

FIG. 6 is an explanatory diagram of a cutting step of horizontally cutting a work by the cutting device according to the embodiment.

FIG. 7 is an explanatory diagram of a cutting step of horizontally cutting a work by the cutting device according to the embodiment.

FIG. 8 is an operation explanatory view showing the second example of the embodiment.

FIG. 9 is an operation explanatory view showing the third example of the embodiment.

[Explanation of symbols]

1 cutting device 3 base frame 5 Support frame 7 cutting head 11 drive wheels 13 Driven wheel 15 Band saw blade (cutting tool) 17 A, B saw blade guide 23 Slider 25 movable frames 27 Lifting frame 29 Support 33 Clamp vise device 35 Upper Clamp Vise 37 Lower Clamp Vise 39 Gap 41 support table

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Claims (2)

(57) [Claims] 1. A support base (29) which supports a lower surface of a work (W) to be cut and is vertically movable relative to a clamp vise (35) , and the support base (29) above the support base (29). a work said clamping device (35) from the horizontal direction of the universal clamping the (W) intersects the axis of the workpiece (W), the workpiece which is clamped in the clamping device (35) to (W) A cutting device provided with a cutting tool (15) which is relatively movable in a horizontal direction and intersects with an axis of the work (W) below the clamp vise (35) for cutting horizontally .
The cut surface of the work (W) is supported by the support table (29).
The workpiece (W) against the support table (29) .
Workpiece (W) is delivered horizontally with the cutting surface facing down
To the height position of the upper surface of the support table (41) which is provided for performing, substantially equal height to the height position of the top surface of the support base (29) in the vertical direction of the home position of the support base (29) A cutting device, which is provided. 2. The cutting device according to claim 1, wherein a work fixing means for fixing the work is provided on the support base.