JP2002210613A - Band sawing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exactly detect a cut end surface by preventing an erroneous action of a sensor by removing a whisker of the cut end surface of a product and a material formed when a work is subjected to a cutting processing. SOLUTION: A whisker removing device 20 is provided just below the band sawing machine 4 for cutting a work W. After cutting the work W, whiskers Sh and Th formed on cutting end surfaces Sa and Ta of a product S and a material T are removed by the whisker removing device 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band saw machine, and more particularly to a band saw machine provided with a whisker removing device.

[0002]

[Prior art]

Conventionally, a band saw machine has a vertically movable band saw blade 40 (FIG. 6) as is well known. The placed work W is cut and processed.

[0004] As a result, a predetermined product S is processed, and the material S is pushed out and carried out by advancing the raw material T.

Thereafter, the material T is retracted to the opposite side of the product S and returned to the origin position.

In this case, when the cut end face Ta of the material T is detected by a sensor installed near the origin position,
The material T stops at the origin position.

[0007]

[Problems to be solved by the invention]

However, as described above, when the workpiece W is cut by the band saw blade 40 (FIG. 6), as shown in FIG.
Whiskers Sh and Th are formed on Ta.

Therefore, from the viewpoint of the sensor installed near the origin, the beard Th of the material T may be judged as a cut end face and detected, and the sensor may malfunction.

As a result, the cut end surface Ta of the material T is not accurately detected, and the material T cannot return to the origin.

Further, in the case of the product S, when the product S is moved in a subsequent process, the sensor similarly malfunctions due to the whiskers Sh formed on the cut end surface Sa,
The cut end surface Sa cannot be accurately detected.

Furthermore, for the product S, this mustache Sh
However, there is a case where it becomes an obstacle in a later process, so that the number of steps for removing it is increased, and there are various adverse effects such as poor appearance because the appearance of the product is not adjusted.

An object of the present invention is to remove a beard on a cut end face of a product and a material formed when cutting a workpiece, thereby preventing malfunction of the sensor and accurately detecting the cut end face.

[0014]

According to the present invention, as shown in FIGS. 1 to 5, a beard removing device 20 is provided immediately below a band saw blade 4 for cutting a workpiece W. After the work W is cut, a technical measure called a band saw machine is provided in which the whiskers Sh and Th formed on the cut end surfaces Sa and Ta of the product S and the raw material T are removed by the whiskers removing device 20.

According to the configuration of the present invention, after cutting the work W with the band saw blade 4 (FIG. 4C), for example, the cutting edge 21 of the beard removing device 20 is raised (FIG. 4D). The stubs Sh and Th can be removed by contacting the cut end surfaces Sa and Ta of the material T with the cut end surfaces and sliding the cut end surfaces Sa and Ta in the left-right direction.

Therefore, according to the present invention, even when the material T is retracted from the processing position K (FIG. 4) and returned to the origin position (FIG. 4E), since the whiskers Th are removed, the sensor is removed. Can accurately detect the cut end surface Ta without malfunction, and since the beard Sh is removed from the product S, the sensor in the subsequent process does not malfunction and the product S
Can be accurately detected.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 is an overall view showing an embodiment of the present invention, FIG. 2 is a detailed view of a beard removing device 20 constituting the present invention, and FIG. 3 is a view showing another embodiment of the beard removing device 20 constituting the present invention. FIG. 4 is a diagram for explaining the operation of the present invention, and FIG. 5 is a flowchart for explaining the operation of the present invention.

In each of the above figures, when indicating the direction,
The Z-axis direction is the vertical direction, the Y-axis direction is the horizontal direction, X
The axial direction is the front-back direction.

The band saw shown in FIG. 1 is, for example, a hinge type band saw.

The band saw has a cutting head 1 mounted on a base 14 via a hinge pin 13 so as to be pivotable in a vertical direction. An apparatus 20 is provided.

The cutting head 1 is vertically pivoted by a cylinder 12 connected to the beam member 5, and housings 2 and 3 are provided on both sides of the beam member 5.

A drive wheel 6 and a driven wheel 7 are rotatably mounted in the housings 2 and 3, respectively. An endless flexible band saw blade 4 is wound around the drive wheel 6 and the driven wheel 7. ing.

A portion of the band saw blade 4 corresponding to the cutting region L of the work W is a pair of guides 10 and 11.
Slidably guided by the pair of guides 10, 11
Are supported at the lower ends of the arms 8, 9 and each arm 8, 9
Are supported by the beam member 5 so as to be adjustable in position.

With this configuration, the band saw blade 4 always faces vertically downward when the cutting head 1 turns downward and reaches the cutting region L, whereby the work W can be cut. (For example, FIG. 4C).

A processing table 16 on which the work W is to be placed is provided on the base 14 in the cutting processing area L, and the processing table 16 is a front processing table 1.
6A (FIG. 2) and a rear working table 16B.

A gap is formed between the two working tables 16A and 16B, and the band saw blade 4 enters the gap during cutting (FIG. 4C).

On the rear working table 16B (FIG. 4A), the main body vise 15 is provided.
The feed vise 17 is installed behind each.

The main body vise 15 includes a fixed vice jaw 15A (FIG. 1) and a movable vice jaw 15 attached to the fixed vice jaw 15A so as to be able to approach / separate therefrom.
B.

Further, the feed vise 17 is
Similarly to the above, the support roller 18 (FIG. 4) is constituted by a fixed vice jaw (not shown) and a movable vice jaw.
(A)) is attached so as to be able to move forward and backward while holding the work W supported by (A) and (FIG. 4 (A), FIG. 4).
(E)).

With this configuration, when the workpiece W sent by the feeding vise 17 is positioned at the processing position K (FIG. 4A) (FIG. 4B), the workpiece W is moved by the main body vise 15. The band saw blade 4 fixed and lowered in this state
Is cut (FIG. 4C).

Immediately below the band saw blade 4 and below a gap formed between the front processing table 16A and the rear processing table 16B constituting the processing table 16,
A beard removing device 20 is provided.

The details of the beard removing device 20 are shown in FIG.

The beard removing device 20 shown in FIG.
The lower surface of the plate 24 is connected to a piston rod 26 of a cylinder 25.

On the plate 24, a Y-axis guide 27 is provided.
The slider 22 is slidably connected to the Y-axis guide 27.

A cutting edge 21 is attached to the slider 22, and the cutting edge 21 is used for cutting (FIG. 4).
(C)) The mustaches Sh and Th formed on the cut end surfaces Sa and Ta of the product S and the material T are removed (FIG. 4).
(D)).

The slider 22 has a ball screw 23
Are screwed together, one end of the ball screw 23 is connected to a motor M installed on the plate 24, and the other end is connected to the plate 2.
4 and supported by bearings 28 installed on the opposite side of the motor M.

With this configuration, after the cutting process is completed (FIG. 4)
(C), YES in step 103 in FIG. 5, cylinder 2
5 to raise the plate 24, thereby raising the beard removing device 20 (FIG. 4D, step 104 in FIG. 5).

Thus, when the cutting edge 21 comes into contact with the cut end surfaces Sa and Ta of the product S and the material T (YES in step 105 in FIG. 5), the motor M is operated to move the cutting edge 21 in the left and right direction (Y axis). Direction), the cutting edge 21 can be slid along the cut end surfaces Sa and Ta (step 106 in FIG. 5).

If the cutting edge 21 is slid a predetermined number of times (YES in step 107 in FIG. 5), the mustaches Sh and Th on the cut end surfaces Sa and Ta are removed (FIG. 4D). Then, the cylinder 25 is operated again to lower the plate 24, thereby lowering the beard removing device 20 (Step 108 in FIG. 3).

Therefore, when the workpiece W is retracted from the machining position K via the feed vise 17 (FIG. 4).
(E)), from the cut end surface Ta of the material T,
Is removed, the sensor does not malfunction, the cut end surface Ta is accurately detected, and the material T can be returned to the origin position.

Further, since the beard Sh of the product S is also removed, the sensor in the subsequent process of the product S does not malfunction, and the cut end surface Sa of the product S is accurately detected.

FIG. 3 is a view showing another embodiment of the beard removing device 20. The difference from FIG. 2 is that a motor M is used as vertical moving means, and a cylinder 25 is used as horizontal moving means. That is the point.

In FIG. 3, the whisker removing device 20 has a column 30, on which a Z-axis guide 31 is laid in the up-down direction. As shown in FIG. The Y-axis direction portion 33A of the U-shaped sliding member 33 is slidingly connected.

Also, the X-axis direction portion 3 of the sliding member 33
3B, a ball screw 32 is screwed from above and below, and one end of the ball screw 32 is connected to a motor M installed at a lower part of the support 30, and the other end is a bearing installed at an upper part of the support 30. 34 supported.

Further, the sliding member 33 has a plate 2
2, a Y-axis guide 27 is laid on the plate 24 as in the case of FIG.
A slider 22 is slidably coupled to 7, and a cutting edge 21 is attached to the slider 22.

However, unlike the case of FIG. 2, a piston rod 26 of a cylinder 25 installed on a plate 24 is connected to the slider 22.

With this configuration, as in the case of FIG. 2, by operating the motor M and the cylinder 25, the product S, the cut surface Sa of the material T, the beard Sh formed on the Ta,
Th can be removed (FIG. 4D).

In FIGS. 2 and 3, the vertical moving means and the left and right moving means can be constituted by a motor / ball screw mechanism, or both can be constituted by a cylinder 25. 1 to 3, a grindstone may be provided in place of the blade edge 21, and the grindstone may be rotated and slid along the cut end surfaces Sa and Ta to remove the mustaches Sh and Th.

The operation of the present invention having the above configuration will be described below with reference to FIGS.

(1) Operation up to the end of cutting. In step 101 of FIG.
In step 102, cutting is performed.

That is, the NC device (not shown) controls the feed vise 17 (FIG. 4A) to
The work W supported above is clamped, and the work W is transported toward the processing position K.

Then, when the workpiece W reaches the processing position K (FIG. 4B), the NC device moves the feed vise 1
7 is stopped, and the work W is kept held.

At this time, the NC device controls the main body vise 15 to fix the workpiece W stopped at the processing position K.

Thereafter, the NC device controls the cylinder 12 (FIG. 1) of the cutting head 1 to turn the cutting head 1 downward and rotate the driving wheel 6 to thereby form a gap between the driven wheel 7 and the driven wheel 7. The band saw blade 4 wound around is circulated.

As a result, the band saw blade 4 (FIG. 4C)
It descends while circulating, and cuts the work W at the processing position K.

In this state, the NC device determines in step 103 of FIG. 5 whether or not the cutting process has been completed.
If not completed (NO), the process returns to step 102 and repeats the same operation. If completed (YES), the process proceeds to next step 104.

(2) Beard removing operation.

(2) -A The cutting edge 21 has a cut end surface Sa, T
Operation until abuts on a.

In step 104 of FIG. 5, the beard removing device 20 is raised.
It is determined whether or not 1 has come into contact with the cut end surfaces Sa and Ta. If not, (NO), the process returns to step 104 and the same operation is repeated. Proceed to step 106.

That is, when the cutting operation is completed (FIG. 4C), the NC device operates the cylinder 12 again (FIG. 1) to rotate the cutting head 1 upward, and the band saw blade 4
After being retracted upward, for example, the beard removing device 20 of FIG.
The plate 24 is raised by controlling the cylinder 25 of the above.

As a result, the beard removing device 20 is raised,
The NC device determines whether the cutting edge 21 abuts on the cut end surface Sa of the cut product S and the cut end surface Ta of the material T.

In this case, the NC device stores in advance the rising distance of the cylinder 25 until the cutting edge 21 comes into contact with the cutting end surfaces Sa and Ta, and when the cutting edge 21 rises to that distance, the cutting edge 21 cuts. It is determined that the cylinder 25 has come into contact with the end surfaces Sa and Ta, and the cylinder 25 is stopped.

Alternatively, if a predetermined contact sensor is attached to the cutting edge 21, the NC device can use the contact sensor via the contact sensor.
It can be determined that the cutting edge 21 has contacted the cut end surfaces Sa and Ta.

(2) -B Removal of mustaches Sh and Th.

In step 106 of FIG.
Is slid along the cut end surfaces Sa, Ta, and step 10
At 7, it is determined whether or not the slide has been performed a predetermined number of times.
If it does not slide (NO), it returns to step 106 and repeats the same operation. If it slides (YES), in step 108, it removes the beard removing device 20.

That is, in the NC device, the cutting edge 21 is
When it is determined that the abutment has contacted a and Ta (FIG. 4D), the motor M is controlled (FIG. 2) to rotate the ball screw 23 to move the cutting edge 21 on the slider 22 in the Y-axis direction. .

As a result, the cutting edge 21 is cut into the cut end surface Sa,
Since it slides along Ta, the NC device measures the number of times of sliding.

[0068] In this case, the NC device previously has a mustache Sh, T
The number of times the blade edge 21 slides when h is removed is stored.

In this state, the NC unit operates, for example, the motor M
By inputting a feedback signal from the encoder (FIG. 2) and measuring the number of rotations of the motor M, the Y
The number of movements in the axial direction, in other words, the number of slidings of the cutting edge 21 with respect to the cut end surfaces Sa and Ta can be measured.

When the number of slides of the cutting edge 21 becomes equal to the number of slides stored in advance, the NC device stops the motor M, controls the cylinder 25 again, and controls the plate 2.
By lowering 4, the beard removing device 20 is lowered.

(3) Unloading of the product S and return-to-origin operation of the work W.

After lowering the beard removing device 20, the NC device controls the main body vise 15 to release the material T portion of the work W, and controls the feed vise 17 to lower the material T portion as described above. Is pushed forward (to the left in FIG. 4 (E)), thereby pushing out the product S on the front processing table 16A and transporting it to, for example, an external transport device (not shown).

Thereafter, the NC device again sends the feed vise 17
The workpiece W is retracted from the processing position K by moving the material T sandwiched between the workpieces W in the opposite direction (right side in FIG. 4E).

In this case, as described above (FIG. 4)
(D)), the material T is cut by the cutting edge 21 of the beard removing device 20.
Since the beard Th has already been removed from the cut end surface Ta, the sensor near the origin position does not malfunction, and therefore,
The cut end surface Ta of the material T is accurately detected, and the material T can be returned to the origin position (FIG. 4E).

Further, since the beard Sh of the product S is also removed, even if the unloaded product S enters the post-process (FIG. 4E), the sensor in the post-process does not malfunction, and the cut-off of the sensor does not occur. The end surface Sa is accurately detected.

In the present embodiment, the case where the whisker 20 is provided on the hinge type band saw (FIG. 1) has been described in detail. However, the present invention is not limited to this. The present invention is also applied to a post-type band sawing machine in which the cutting head 1 moves up and down along a guide bost standing upright, and is not limited to FIG.
Of course, even when 0 is used, the same operation and effect can be obtained.

[0077]

As described above, according to the present invention, after the work is cut by the band saw blade, the cutting edge of the beard removing device is raised to abut the cut end surface of the product and the material, and the left and right are cut along the cut end surface. By sliding in the direction, the whiskers can be removed, so by removing the whiskers on the cut end face of the product and material formed when cutting the workpiece,
This has the effect of preventing the sensor from malfunctioning and accurately detecting the cut end face.

[0078]

[Brief description of the drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is a detailed view of a beard removing apparatus 20 constituting the present invention.

FIG. 3 is a view showing another embodiment of the beard removing apparatus 20 constituting the present invention.

FIG. 4 is a diagram illustrating the operation of the present invention.

FIG. 5 is a flowchart for explaining the operation of the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 Reference Signs List 1 cutting head 2, 3 housing 4 band saw blade 5 beam member 6 drive wheel 7 driven wheel 8, 9 arm 10, 11 band saw blade vertical twist guide 12 cutting head swivel cylinder 13 hinge pin 14 base 15 body vice 16 working table 17 feed Vise 18 Support roller 20 Beard remover 21 Blade tip 22 Slider 23, 32 Ball screw 24 Plate 25 Beard remover ascending cylinder 26 Piston rod 27 Y-axis guide 28, 34 Bearing 30 Support 31 Z-axis guide 33 Sliding member S Product T Material Sa, Ta Cut surface Sh, Th Mustache W Work

Claims (4)

[Claims] A band saw is provided immediately below a band saw blade for cutting a work, and after the work is cut, a beard formed on a cut end surface of a product and a material is removed by the above-mentioned hair remover. Board. 2. The beard removing device has a cutting edge, and the cutting edge is movably mounted in a vertical direction and a horizontal direction. After cutting a work, the cutting edge is raised to abut on a cut end surface of a product and a material. 2. The band saw machine according to claim 1, wherein said whiskers are removed by sliding in a left-right direction along said cut end face. 3. The cutting edge is slidably coupled on the plate, the cutting edge is moved on the plate in the left-right direction by predetermined left-right moving means, and the plate is moved in the vertical direction by predetermined vertical moving means. 2. The band saw according to 2. 4. The predetermined vertical moving means and the horizontal moving means are each constituted by a motor / ball screw mechanism or a cylinder, or one of the predetermined vertical moving means and the horizontal moving means. But the motor
The band saw machine according to claim 3, wherein the band saw machine is constituted by a ball screw mechanism or a cylinder, and the other is constituted by a cylinder or a motor / ball screw mechanism.