JP2002079419A - Sizing device for cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sizing device for band saw machines capable of improving sizing efficiency and accuracy in cutting a round steel bar and restraining production costs and transportation costs. SOLUTION: The sizing device is provided with a main vice 11 in close vicinity to the cutting position of the band saw machine, a standard sizing vice 12 capable of moving in the direction to approach and separate from the main vice 11 in a short range, an expansion cylinder 13 for moving the standard sizing vice 12 in the direction to approach and separate from the main vice 11, a long range sizing vice 14 capable of moving in the direction to approach and separate from the main vice 11 in a long range, a feed screw mechanism 15 for moving the long range sizing vice 14 in the direction to approach and separate from the main vice 11, a control section for controlling the holding motion of each vice and sizing motion of the expansion cylinder 13 and the feed screw mechanism 15, an end face detecting device 5 for detecting the rear end position of a round steel bar, and a changing-over section for changing- over the control object by the control section from the side of the expansion cylinder to the side of the feed screw mechanism and vice versa according to the output from the end face detecting device 5. A rear free roller table 14a having a long sizing vice and a feed screw mechanism is connected to a base table detachably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sizing device used for feeding and dimensioning a work to obtain a set cutting length in a cutting machine such as various sawing machines and grindstone cutting machines.

[0002]

2. Description of the Related Art Conventionally, as a sizing device such as a band saw machine, a device as shown in FIGS. 7 and 8 is generally used.
That is, the main vise a2, which is close to the cutting position provided on the base a1 of the band sawing machine a, is supported movably in the approaching / separating direction on the rail a3 laid close to the rear in the material feeding direction. The fixed size vise a4 is transferred to the cylinder a5.
To move forward (approach) and retreat (separate). After retracting the fixed-size vise a4 by a distance corresponding to the cutting length, the workpiece w is moved forward to the front end in a state where the workpiece w is clamped. There is a standard type that performs sizing. Then, a free roller stand a7 is provided behind the sizing device for the case where the work w is long.

In such a sizing device, most of the preset cutting length of the work is relatively short (for example, 4 mm).
00 mm or less).
And the moving distance of the fixed size vise a4 in the front-rear direction are naturally set to be short.

[0004]

By the way, in the case of a work such as a steel pipe, the cutting length exceeds 400 mm and the length is 2 mm.
Thicknesses of up to 000 mm may be required.

In this case, in the conventional standard type sizing device, a desired cutting length is obtained by performing a plurality of sizing operations determined according to the cutting length. Therefore, the cutting length of the work w is 2000 m
When the distance reaches m, the sizing operation for moving the sizing vise a4 back and forth is repeatedly performed five times for convenience.

However, it takes much time to repeat the sizing operation in this manner, and the sizing efficiency becomes very poor.

In addition, when the workpiece is repeatedly fed, the fixed size vise a4 and the main vice a2 alternately take over the work, so that the error is accumulated every time the fixed size vise a4 is set, and the final size is increased. The dimensional accuracy of the work w positioned at the position is also considerably reduced.

Therefore, in order to improve the efficiency and accuracy of the dimensioning of the work w, a band sawing machine which integrally incorporates a long sizing device as shown in FIGS. 9 and 10 has been devised. .

That is, a rail b3 is provided on the lower surface of a free roller base b7 supporting free rollers b8,... Provided at predetermined intervals in the material feeding direction with respect to a main vise b2 on a base b1 of a band sawing machine b. Extend and its rail b3
A fixed size vice feed mechanism b5 such as a feed screw mechanism that feeds a long fixed size vise b4 that is guided by
By moving the long fixed size vise b4 backward by a distance corresponding to a long cutting length (for example, about 2000 mm), the workpiece w is advanced to the front end while being clamped. The work w is fed once to measure the size.

[0010] However, the above-mentioned long sizing device has the following problems.

First, generally, since a work is rarely cut into a long dimension at all times, a long rail b3, a long fixed vise b4, and a long fixed vise feed mechanism b5 which are used only occasionally are provided. In the size device, the machine is large and wasteful.

Further, if a machine equipped with a long sizing device equipped with a long rail b3, a long sizing vise b4 and a long sizing vise feeding mechanism b5 is to be manufactured, the manufacturing cost will be greatly increased. become.

In addition, since the above-mentioned elongate sizing device is integrated with the cutting machine, the whole machine becomes very long in the workpiece feeding direction. For this reason, the transportation cost is greatly increased as compared with a standard type machine in which the length of the rail a3 and the moving distance of the fixed size vise a4 are set short.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to improve the efficiency and accuracy of the dimensioning of a work, and to reduce the manufacturing cost and the transportation cost. It is an object of the present invention to provide a sizing device for a cutting machine.

[0015]

In order to achieve the above object, a solution taken by the invention according to claim 1 is to provide a cutting machine for conveying a workpiece in a longitudinal direction so as to obtain a preset cutting length. As a sizing device, a main vise provided in proximity to the cutting position of the work on the base of the cutting machine, and in the approaching direction and the separating direction between the main vise and a short distance in the vicinity of the longitudinal back of the work. A standard size vise that is movably provided to hold the work, a standard size vise feed mechanism that moves the standard size vise in the approaching / separating direction, and whether the standard size vise is close to the rear of the work in the longitudinal direction of the work. A long measuring vise which is provided movably in the approaching direction and the separating direction with respect to the main vise between the long distances, and holds the workpiece in the approaching / separating direction. Moving the fixed size vise feed mechanism, the standard size vice clamping operation and the standard size vise feeding mechanism, and the long constant size vice clamping operation and the long size vice feeding mechanism. Control means for controlling the sizing operation, and switching means for switching the control object by the control means to the standard sizing vise and the standard sizing vise feeding mechanism side, or to the long sizing vice and the long sizing vice feeding mechanism side. Is provided. And, while the main vice, the standard size vise and the standard size vise feed mechanism are integrally assembled to the cutting machine, the long size vise and the long size vise feed mechanism can be separated from the cutting machine. It is configured to be connected.

In this way, when a plurality of workpieces are cut into a long length (for example, 2000 mm), the workpiece is moved in the feed direction with respect to the main vise provided on the base of the cutting machine and close to the cutting position. On a rail laid on the ground, the long fixed-length vise is retracted by a predetermined distance corresponding to the cutting length by the long fixed-length vice feed mechanism, and then the workpiece is clamped and advanced to the front end. The workpiece is cut to a fixed size, and the work is held by the main vice. Meanwhile, the long measuring vise is retracted by a predetermined distance, and when the cutting of the work is completed, the rear part of the work is clamped in place of the main vise, and the long measuring vise is advanced to the front end. The sizing operation and the cutting process of the long sizing vise feed mechanism are repeated.

On the other hand, when the work is set to a short dimension (for example, 400 m
m or less), the standard sized vise is retracted by the standard sized vise feed mechanism by a distance corresponding to the cutting length from the main vise, and then the workpiece is clamped to the front end. By moving the work forward, the work is sized, and the work is cut and held while being held by the main vice. In the meantime, the standard size vise is retracted by a predetermined distance, and when the work has been cut, the rear part of the work is clamped in place of the main vise, and the standard size vise is advanced to the front end. The sizing operation of the vise feeding mechanism and the cutting process are repeated.

Thus, the cutting length of the workpiece is 400 mm
Is exceeded, the control by the control means is switched to the clamping operation of the long measuring vise and the sizing operation of the long measuring vise feeding mechanism. Since it can be obtained by the feed sizing operation, the sizing efficiency is good, and it is not necessary to change the work many times, the accumulated error is reduced as much as possible,
The dimensional accuracy of the finally positioned work is also improved.

In addition, the manufacturing cost can be significantly reduced as compared with the case where a cutting machine in which a long measuring vise and a long measuring vise feed mechanism are integrally assembled with the cutting machine. It becomes possible.

Further, at the time of transporting the machine, by separating the long sizing vise and the long sizing vise feed mechanism from the cutting machine, the main unit integrally assembled with the cutting machine on a bed such as a truck. The vice, the standard size vise, and the standard size vise feed mechanism can be mounted separately. For this reason, it is possible to greatly reduce the transportation cost as compared with a machine in which the long fixed-size vice and the long fixed-size vice feed mechanism are integrally assembled to the cutting machine.

Further, other components except for the configuration of the long sizing vise and the long sizing vise feed mechanism,
In other words, the configuration requirements on the cutting machine side, such as the main vice, the standard sizing vise, and the standard sizing vise feed mechanism, are the same as the standard type cutting machine with the sizing device. The sizing vise and the long sizing vise feed mechanism may be connected as an accessory, and it is possible to achieve versatility as a sizing device capable of coping with the case where the cutting length of the work exceeds 400 mm. .

In particular, in the invention according to the second aspect, there is provided a detecting means provided in the long fixed-size vice for detecting the position of the rear end face of the work, and receives a detection signal from the detecting means to detect the position of the work. When the end face position is not detected, the long sizing vise and the long sizing vise feed are switched by the switching means so as to control the holding operation of the long sizing vise and the sizing operation of the long sizing vise feeding mechanism. While being switched to the mechanism side, when the position of the rear end face of the work is detected, the standard sizing by the switching means is controlled so as to control the clamping operation of the standard sizing vise and the sizing operation of the standard sizing vise feeding mechanism. The configuration is such that it can be switched to the vice and standard fixed-size vise feed mechanism side.

Accordingly, when the cutting length of the work is set to a long dimension (for example, 400 mm or more), the clamping operation of the long measuring vise and the sizing operation of the long measuring vise feeding mechanism are performed. While the work is fed and positioned, after the position of the rear end face of the work is detected by the detecting means, the standard sized vise is held and the standard sized vise feed mechanism is operated once or a plurality of times. The operation is switched to the standard sizing vise clamping operation and the standard sizing vise feeding mechanism side so that the workpiece is fed and positioned by the sizing operation.

Thus, the control target by the control means is:
The switching can be performed in accordance with a detection signal from a detection unit that detects the position of the rear end surface of the work, so that control can be simplified.

According to the third aspect of the present invention, upon receiving the detection signal from the detecting means, the backward moving distance by the sizing operation of the long sizing vise feeding mechanism is shorter than the preset cutting length. When the position of the rear end face of the work is detected at the position, the switching means controls the nipping operation of the long measuring vise and the sizing operation of the long measuring vise feed mechanism at the detected position. It has been switched to the vice and long size vise feed mechanism side, and when the above size operation is completed, the workpiece feeding distance from the above detection position by the size operation of the long size vise feed mechanism is not enough. Switching means is used to switch between the standard sized vise and the standard sized vise feed mechanism so that the required length of the remaining work can be obtained from the workpiece feeding distance by the sizing operation of the standard sized vise feed mechanism. It is obtained by the.

With this, when the cutting length of the work is set to a long dimension (for example, 400 mm or more), the control target by the control means is switched to the long sizing vise and the long sizing vise feeding mechanism. However, if the position of the rear end face of the work is detected at a position where the retreat distance of the long fixed-length vice feed mechanism is shorter than the preset cutting length, the long fixed-length vice is clamped from the detected position. The workpiece is fed by controlling the sizing operation of the long sizing vise feed mechanism, and then the control target is switched to control the nipping operation of the standard sizing vise and the sizing operation of the standard sizing vise feeding mechanism. The standard sizing vise clamping operation and the standard sizing vise feeder are performed until the required length of the remaining work which is less than the work feeding distance by the sizing operation of the long sizing vise feeding mechanism is obtained. Sizing operation is repeatedly performed.

As described above, the cutting length, which is less than the sizing operation of the long sizing vise feeding mechanism, is obtained in cooperation with the sizing operation of the standard sizing vise feeding mechanism. And the sizing accuracy is improved.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a band sawing machine as a cutting machine according to an embodiment of the present invention.
Is used for sizing and feeding the round bar W in the longitudinal direction so as to cut the round bar W as a long bar-shaped work into a predetermined cutting length in the band saw machine X.

-Description of Band Saw Machine- The band saw machine X is of a type called a horizontal band saw machine, and has a known structure, so that detailed illustration and description are omitted.

In FIG. 1, a band sawing machine X includes a base X1 and
A saw frame X3 which is arranged above the base X1 and stretches the saw blade X2, a fixed side saw guide X4 provided on a right side portion of the saw frame X3, and a left side portion of the saw frame X3. And a moving side saw guide X5.

The base X1 is formed in a substantially rectangular block shape which is long in the left-right direction in FIG. 1, and is adapted to support the round steel W on its upper surface. A columnar main column X11 is erected on the right side of the base X1, and a columnar sub-column X12 is erected on the left side.

The saw frame X3 is provided with a base X1 in FIG.
The main column X11 and the sub-column X12 are supported so as to be vertically movable. A lifting cylinder (not shown) is provided between the base X1 and the saw frame X3, and the saw frame X3 is raised and lowered by expansion and contraction of the lifting cylinder.

The left and right portions of the saw frame X3 are provided with housing portions X31 and X32, respectively. A driven side saw wheel X33 is rotatably supported on the left housing portion X31, while the right side portion is provided on the right side. A drive side saw wheel X34 is rotatably supported on the housing portion X32. A saw blade X2 is wound between the driven side saw wheel X33 and the drive side saw wheel X34. The drive side saw wheel X34 is rotatably connected to an output shaft of a saw drive motor (not shown), and rotates with the driven side saw wheel X33 by the rotation of the saw drive motor. It is made to go around in the sawing direction.

As shown in FIG. 1, the saw frame X3
Is provided with a guide rail X35 extending between the housing portions X31 and X32.
Are arranged in parallel with the saw blade X2.

The fixed side saw guide X4 is provided with a guide rail X35.
And is provided near the round bar W on the left side of the right housing part X32 so as to guide the right side of the saw blade X2.

The moving side saw guide X5 is provided with a guide rail X35.
And is provided near the round bar W on the right side of the left housing part X31 so as to guide the left side of the saw blade X2. The moving side saw guide X5 is supported movably in the extending direction with respect to the guide rail X35, and the position thereof is adjusted on the guide rail X35 according to the width dimension of the round bar W.

-Description of Sizing Apparatus- As shown in FIGS. 2 to 6, the sizing apparatus 1 has a main vise 11 provided close to the rear of the cutting position and a main vise 11 facing the main vise. A standard sized vise 12 is provided near the rear of the round bar W in the transport direction, and is movable in an approaching direction (forward direction) and a separating direction (retreating direction) with respect to the main vise 11.
And a telescopic cylinder 13 as a standard size vice feed mechanism for moving the standard size vise 12 in the approaching / separating direction.
A long section which is provided near the rear of the moving section of the standard sized vise 12 relative to the main vise 11 and is movable in an approaching direction (forward direction) and a separating direction (retreating direction) with respect to the main vise 11. Standard vice 14 and this long standard vice 1
A feed screw mechanism 15 as a long fixed-size vice feed mechanism for moving the reference 4 in the approaching / separating direction;
2 and telescopic cylinder 13, and long fixed size vice 14
A control unit 16 (shown in FIG. 6) as control means for controlling the feed screw mechanism 15 and a setting unit 18 (FIG. 6) for instructing the control unit 16 on the cutting length of the round bar W cut by the band saw machine X. As a switching means for switching the control object by the control unit 16 to the standard sized vise 12 and the telescopic cylinder 13 side or the long sized vise 14 and the feed screw mechanism 15 side in accordance with an instruction from the installation unit 18. (See FIG. 6).

More specifically, the main vise 11 is provided on a base X1 of the band sawing machine X via a vice body 11a.
(The position below the saw blade X2).

The standard sized vise 12 has a pair of left and right rails 12a, 12a (shown in FIGS. 2 and 4) on a rear convex portion X1a integrally protruding rearward at a substantially central portion of the rear surface of the base X1. Body 12b slidably supported via
, And reciprocates in a short distance (specifically, about 400 mm) on the rear convex portion X1a (rail 12a) in the front-rear direction (longitudinal direction of the round bar W) to approach and separate from the main vise 11. It is made to move in the direction.

The telescopic cylinder 13 has a cylinder tube 13a connected to a vice body 11a and a piston rod 13b.
Are connected to the standard sizing vise 12, respectively. The telescopic cylinder 13 moves the standard sized vise 12 in a direction (rearward) away from the main vise 11 at the time of extension, and moves the standard sized vise 12 toward the main vise 11 at the time of contraction. By moving it forward (forward), the sizing operation of the round bar W can be performed within a short distance.

The long fixed size vise 14 is a pair of left and right rails 14 provided on the lower surface of a rear extending free roller base 14a connected to the rear surface of the rear convex part X1a of the base X1.
The vice body 14c is slidably supported via the b and 14b (shown in FIG. 5). The rear free roller base 14a (rail 14b) is a long distance (specifically, 2600) behind the standard fixed size vise 12 (rear convex part X1a).
mm), and the long fixed-size vice 14 is reciprocated in the front-rear direction (longitudinal direction of the round bar W) for a long distance along the rail 14b to move the main vise 11 toward and away from the main vise 11. It has been made like that. The rear free roller base 14a includes a plurality of rollers 14d, which are rotatably supported at predetermined intervals (for example, about 600 mm between axes) in the conveying direction of the round bar W, and the round bar W is positioned at the cutting position. It is configured to be smoothly transported toward the vehicle. And base X
A single roller X1b is also rotatably supported on the rear convex portion X1a of each of the first free roller bases 14a.
The round bar W is delivered from d.

Further, a front free roller base 2 extending forward is provided on the front surface of the base X1. The front free roller table 2 is provided with a plurality of rollers 21 that are rotatably supported at predetermined intervals (for example, about 170 mm between axes) in the conveying direction of the round bar W, and are cut at a cutting position and cut half. The short round bar W that has become a product is smoothly carried out. In this case, the round steel W is attached to the rear free roller base 1.
4a, 4a,..., Rear convex portion X1a of base X1
The rollers are supported by the upper roller X1b and the rollers 21 of the front free roller table 2, and are conveyed on the same horizontal plane.

Then, the main vise 11 and the standard fixed size vise 1
2 and the long fixed-size vice 14 include a fixed jaw 31 fixed to the vice main bodies 11a, 12b, and 14c at a right portion of the round steel W, and a round steel W
Vice bodies 11a, 12b, 14
and a cylinder 33 provided between the vice bodies 11a, 12b, 14c and the movable jaw 32 and extending and contracting to move the movable jaw 32 rightward or leftward, respectively. Have. The main vise 11 is configured to be able to clamp the round bar W near the cutting position, and the standard sized vise 12 is formed of a round bar V over a short distance from the rear to the front on the rear extension X1a. W is configured to be clamped, and the long fixed-size vice 14 is configured to be able to clamp the round bar W over a long distance from the rear to the front along the rail 14b.

The movable jaw 3 of the long fixed-size vice 14
2 is guided and supported in the left and right direction by a pair of vertically symmetrical guide bars 32a, 32a (shown in FIGS. 2 and 5) with respect to the telescopic cylinder 33 so that the movable jaw 32 can move accurately and smoothly. It has been done.

The feed screw mechanism 15 is connected to the rear free roller base 1.
A feed screw shaft 15a spanned between the front and rear ends of 4a;
A forward / reverse rotatable motor 15b is provided at the rear end of the rear free roller base 14a and has an output shaft (not shown) integrally and rotatably connected to the rear end of the feed screw shaft 15a.
The feed screw shaft 15a is screwed with the vice main body 14c of the long fixed size vise 14, and the feed screw mechanism 15 connects the long fixed size vice 14 (the vice main body 14c) to the main vise 11 when the motor 15b rotates in the reverse direction. Direction away from (rear)
While moving within a long distance, the direction in which the long fixed-size vice 14 approaches the main vise 11 during forward rotation (forward).
By moving the round bar W, the round bar W can be transported over a long distance. The positioning of the fixed-size vise 12, 14 for the fixed-size of the round bar W is performed by reading the moving distance from the front end position to the rear.

[0047] As shown in FIG.
2 is provided with an end face detecting device 4 as a detecting means for detecting the rear end face of the round bar W. Further, the long fixed size vise 14 is also provided with an end face detecting device 5 as a detecting means for detecting the rear end face of the round bar W. Each of the end face detection devices 4 and 5 is constituted by a pair of left and right transmission type photoelectric sensors 41, 41, 51 and 51 each comprising a light projecting body and a light receiving body. The end face detection device 4 of the standard sized vise 12 is attached to the front end faces of the fixed jaw 31 and the movable jaw 32, and detects that the rear end face of the round bar W has been passed in the retracting stroke of the standard sized vise 12 by the telescopic cylinder 13. The end of the round bar W is detected by detecting the end of the round bar W.
On the other hand, the end face detecting device 5 of the long sizing vise 14 is attached to the rear end faces of the fixed jaw 31 and the movable jaw 32, and the rear end face of the round bar W in the retreating stroke of the long sizing vise 14 by the feed screw mechanism 15. Is detected, the rear end position of the round steel bar W is known. The transmission type photoelectric sensor 4 of each of the end face detection devices 4 and 5
The rear end face passage data of the round bar W detected by 1, 41, 51, 51 is taken into the control unit 16.

The control unit 16 controls the saw frame X3 of the band sawing machine X.
This controls the raising / lowering operation of the raising / lowering cylinder, the driving operation of the saw driving motor, and the position adjusting operation of the moving side saw guide X5. Further, as shown in FIG.
For the main vise 11, the standard size vise 12, the telescopic cylinder 13, the long size vise 14, and the feed screw mechanism 15,
The control signal is output according to a procedure described later. Specifically, the control unit 16 performs the clamping operation of the main vise 11, the clamping operation of the standard sized vise 12, the sizing operation of the telescopic cylinder 13, the clamping operation of the long sized vice 14, and the operation of the feed screw mechanism 15. Controls sizing operation. In this case, the control unit 1
Numeral 6 is composed mainly of a computer and its peripheral devices, and includes a memory and an arithmetic circuit related to the sizing operation of the standard sizing vise 12 and the long sizing vise 14.

The setting unit 18 instructs the control unit 16 on the cutting length of the round bar W operated by the operation panel (not shown) provided on the base X1 of the band sawing machine X.

The switching section 17 switches and outputs the control signal from the control section 16 to the standard sized vise 12 and the telescopic cylinder 13 or the long sized vise 14 and the feed screw mechanism 15. One of the clamping operation of the dimension vise 12 and the dimensioning operation of the telescopic cylinder 13 or the clamping operation of the long dimensioning vise 14 and the dimensioning operation of the feed screw mechanism 15 are controlled. Then, when detecting that the long measuring vise 14 has passed the rear end face of the round steel W on the way to the rear predetermined position, the long measuring vise 14 retreats from the front end to remove the round steel W. If the distance until the rear end face is detected is shorter than the cutting length instructed by the setting unit 18, the long sizing vise 14 at that time is used.
After the round bar W is pinched and fed to the front end, the remaining required length shorter than the feeding distance by the feed screw mechanism 15 is calculated by the arithmetic circuit of the control unit 16, and the remaining required length is determined by the standard sizing vise. 12 and control of the sizing operation of the telescopic cylinder 13, the standard sizing vise 1
2 and the telescopic cylinder 13 side. After that, the switching state is maintained until the rear end face passing data of the round bar W is received from the end face detecting device 4 for detecting the remaining dimension of the round bar W shortened in the cutting step.

As shown in FIGS. 2 and 3, the main vice 11 and the standard fixed vise 1 are featured in the present invention.
2 and the telescopic cylinder 13 are integrally assembled to a base X1 (rear convex part X1a) of the band sawing machine X to constitute a standard sizing device S. On the other hand, the long sizing vise 14 and a feed screw mechanism After that, the free roller base 14a is provided with a long sizing device L, and is separably connected to a base X1 (rear convex part X1a) of the band sawing machine X by a connecting tool (not shown).

Next, control by the control unit 16 when the round bar W is cut into a long dimension and a short dimension will be described. In this case, the round bar W is formed of the rear free roller base 14a and the rollers 14d and X1b of the rear convex part X1a of the base X1.
It is assumed that it is supported above and its front end face is located at the cutting position on the base X1. The main vice 11, the standard sizing vise 12, and the long sizing vise 14 are in a state where the movable jaw 32 is moved to the left by the contraction of the cylinder 33 and the round bar W is not clamped.
2 and the long fixed-size vice 14 are located at the front end positions (the positions indicated by two-dot chain lines in FIGS. 2 and 3).

First, the round bar W is set to a long dimension (for example, 1800).
mm), the setting section 1
In 8, by setting the cutting length of the round bar W to 1800 mm, the control target is switched to the long fixed size vice 14 and the feed screw mechanism 15 side. As a result, the feed screw shaft 15a extending between the front and rear ends of the rear free roller base 14a is reversely rotated by the motor 15b, and as shown by a solid line in FIGS. The main body 14c) is moved 1800 mm in a direction away from the main vise 11 (backward). This completes the fixed size positioning by the feed screw mechanism 15.

Next, the movable jaw 32 is fixed to the fixed jaw 31 on the vice main body 14c of the long fixed size vice 14.
Is moved to the right by the extension of the cylinder 33 to clamp the round bar W. Then, the feed screw shaft 15a is rotated forward by the motor 15b while the round steel bar W is clamped, and FIG.
As shown by a two-dot chain line in FIG. 3, by moving the long fixed size vise 14 on the rail 14 b in a direction approaching the main vise 11 (forward) and pressing it toward the front end position, the feed screw mechanism 15 is used. Feeding of 1800 mm which matches the cutting length of the round bar W is performed.

Subsequently, the vice main body 11a of the main vise 11
By moving the movable jaw 32 rightward by the extension of the cylinder 33 with respect to the fixed jaw 31 above, the round steel W
The movable jaw 32 is moved to the left by the contraction of the cylinder 33 with respect to the fixed jaw 31 on the vice body 14c of the elongated measuring vise 14 at the same time while the Release of the holding of the round bar W by 14 is released. Then, the saw drive motor is driven to rotate the saw blade X2, and the band saw machine X cuts the round bar W. Meanwhile, the feed screw shaft 15a is connected to the motor 15b.
To move the long fixed-size vise 14 (the vice body 14c) on the rail 14b in the direction away from the main vise 11 (rearward) by 1800 mm to fix the fixed-size position, and to set the feed screw mechanism 15 To prepare for the second round of material feeding operation of round steel W by.

After that, when the cutting process of the round steel W is completed, the vise body 14c of the long vise 14 at a predetermined position is completed.
The movable jaw 32 is moved rightward by the extension of the cylinder 33 with respect to the fixed jaw 31, thereby performing the clamping operation of the round steel W by the long fixed-size vice 14, and the fixed jaw on the vice main body 11 a of the main vise 11. 31
By moving the movable jaw 32 to the left by the contraction of the cylinder 33, the gripping of the round bar W by the main vise 11 is released. Then, similarly to the first time, the feed screw shaft 15a is rotated forward by the motor 15b, and the long fixed size vise 14 is advanced on the rail 14b and pressed against the front end position. Thereby, the material is fed, and the cut piece W ′ of the previously cut round bar W is extruded onto the roller 21 of the front free roller base 2 and carried out.
, And the steps after the round steel W cutting step are repeated.

Then, while the cutting work by the band saw machine X is being performed, the elongate measuring vise 14 retreating has passed through the rear end face of the round bar W on the way to the predetermined rear position. When it is detected by the end face detection device 5 (transmission type photoelectric sensors 51, 51) of the dimension vise 14, the dimensioning is performed at the detection position (midway of a long distance by the dimensioning operation of the feed screw mechanism 15), The rear end of the round bar W is clamped by the long fixed-size vice 14. At this time, the value of the fixed size position of the feed screw mechanism 15 is stored in the memory, and when the feeding to the front end position by the feed screw mechanism 15 is completed, the control object is changed to the long fixed size vice 14 and the feed screw mechanism 15. Standard size vise 12 and telescopic cylinder 13 from the side
Side by the switching unit 17. Then, a feed screw mechanism 1 is used in an arithmetic circuit based on the value stored in the memory.
The remaining required length that is less than the sizing operation of No. 5 is calculated, and the number of sizing operations by the telescopic cylinder 13 is obtained according to the remaining required length. For example, when the remaining dimension is 700 mm, 350mm fixed size operation
Repeat several times. That is, the feed is performed twice.

More specifically, after the telescopic cylinder 13 is extended, the standard fixed-size vise 12 (the vice main body 12b) is moved 350 mm in the direction away from the main vise 11 (rearward) along the rail 12a and then positioned. Then, the movable jaw 32 of the standard sized vise 12 is moved rightward by extension of the cylinder 33 to clamp the round bar W. Next, the movable jaw 32 of the long measuring vise 14 is moved to the left by the contraction of the cylinder 33 to release the clamping of the round steel W by the long measuring vise 14, and at the same time, the round steel W is clamped by the standard measuring vise 12. In this state, the telescopic cylinder 13 is contracted, and the standard sized vise 12 is moved in a direction (forward) approaching the main vise 11 to the front end position (the position indicated by the two-dot chain line in FIGS. 2 and 3). Pressing the telescopic cylinder 1 of round steel W
After performing the first material feeding by 3 and performing the clamping operation by the main vise 11, the clamping by the standard fixed-size vise is released. Then, the standard sized vise 12 is again moved 350
mm, and after performing the clamping operation of the standard fixed-size vise 12, the clamping of the main vise 11 is released.
The second feeding of the round bar W by the telescopic cylinder 13 is completed by moving the standard sized vise 12 forward by the contraction of the telescopic cylinder 13 and pressing it toward the front end position.
To obtain the desired cutting length (1800 mm). Here, the sizing mechanism and the sizing operation by the standard sizing vise 12 and the telescopic cylinder 13 are the well-known standard type band sawing machines with sizing devices themselves.

On the other hand, the round bar W is set to a short dimension (for example, 300 m).
In the case of cutting a plurality of pieces in step m), the control target is switched to the standard fixed-size vice 12 and the telescopic cylinder 13 by instructing the setting section 18 to set the cutting length of the round bar W to 300 mm. Then, the stroke according to the above by the standard sizing vise 12 and the telescopic cylinder 13 is once fed 300 times.
It is repeated as mm fixed size.

Then, it is determined that the standard sized vise 12 retreating during the cutting operation by the band saw machine X has passed the rear end face of the round bar W before reaching the rear predetermined position. 12 end face detection devices 4 (transmission type photoelectric sensor 4
1, 41), the control unit 16 determines that the material is finished based on the data on the passage of the rear end face of the round bar W, and stops the sizing operation by the telescopic cylinder 13.

As described above, the control object of the control unit 16 is set to the long fixed size vise 14 and the feed screw mechanism 15 side or the standard fixed size vice 12 and the telescopic cylinder 13 side according to the cutting length of the round bar W. This means that even if the cutting length of the round bar W is longer than 400 mm, the round bar W can be switched over once without exchanging the round bar W many times except for the final part. The dimensional accuracy is good, the accumulated error is reduced as much as possible, and the dimensional accuracy of the finally positioned round bar W can be improved.

Note that the switching unit 17 is connected to the rear end face of the end face detecting device of the long fixed length vise when the long fixed length vise passes the rear end face of the round bar W before reaching the predetermined rear position. Based on the data, the control may be switched to the standard size vise and the telescopic cylinder side so as to control the holding operation of the standard size vise and the sizing operation of the telescopic cylinder. In this case, switching based on complicated control by the control unit is not required, and the control unit can be simplified.

With the above configuration, compared to a case where a cutting machine in which a long sizing vise and a feed screw mechanism (a long sizing device) are integrally assembled to a band sawing machine is manufactured,
Manufacturing costs can be significantly reduced.

In addition, when transporting the machine, the long sizing device L having the long sizing vise 14 and the feed screw mechanism 15 is separated from the base X1 of the band sawing machine X, so that trucks and the like can be separated. The band sawing machine X including the main vise 11, the standard fixed-size vise 12, the telescopic cylinder 13, and the like integrally mounted on the base X1 can be separately mounted on the carrier. For this reason, the transportation cost can be greatly reduced as compared with a machine in which the long sizing device is integrally assembled to the base of the band sawing machine.

Further, the main vice 1 excluding the long sizing device L
1. The other configuration requirements of the band sawing machine X such as the standard sizing vise 12 and the telescopic cylinder 13 are the band sawing machine with the standard type sizing device itself. The sizing device L may be connected as an accessory, and the versatility as a sizing device capable of coping with the case where the cutting length of the round bar W exceeds 400 mm can be achieved.

In the above embodiment, the case where the round bar W is processed has been described. However, it is needless to say that the work can be applied to a long section steel or a steel pipe.

Further, it goes without saying that the present invention is applicable to various sawing machines and other cutting machines in addition to the band sawing machine.

[0068]

As described above, according to the first aspect of the present invention,
According to the sizing device of the cutting machine in the above, the control object of the control means is set to the standard sizing vise and the standard sizing vise feed mechanism side, or the long sizing vise and the long sizing according to the cutting length of the workpiece. By switching to the vise feed mechanism, there is no need to repeat the sizing operation by the standard sizing vise feed mechanism even if the cutting length of the work is long, and the sizing time can be greatly reduced, effectively increasing the sizing efficiency. be able to. In addition, by obtaining the long cutting length of the work by the single-sizing operation by the long and fixed-size vice feeding mechanism, the sizing error can be reduced as much as possible, and the dimensional accuracy of the work can be improved.

Further, by connecting the long measuring vise and the long measuring vise feed mechanism to the cutting machine in a separable manner,
The manufacturing cost can be greatly reduced as compared with a sizing device in which a long sizing vise and a long sizing vise feed mechanism are integrally assembled to a cutting machine. In addition, when transporting the machine, separate the main vise, the standard size vise and the standard size vise feed mechanism on the cutting machine side, and the long size vise and the long size vise feed mechanism etc. separately on the bed such as truck. Because it can be mounted, transportation costs can be greatly reduced.

Further, for a standard type cutting machine with a sizing device, a long sizing vise and a long sizing vise feed mechanism,
In other words, since a simple configuration can be easily obtained by connecting a long dimensioning device, the versatility as a dimensioning device capable of coping with a long cutting length of a work can also be achieved.

According to the sizing device for a cutting machine according to the second aspect of the present invention, the control object is controlled by the standard sizing vise and the standard sizing vise feeding mechanism in accordance with the detection signal for detecting the rear end face of the work. Side, or by switching to the long fixed-size vise and long fixed-size vice feed mechanism side, switching based on complicated control by the control means becomes unnecessary,
The control means can be simplified.

According to the sizing device for a cutting machine according to the third aspect of the present invention, when the rear end face of the work is detected by the long sizing vise at a position where the moving distance backward from the cutting length is shorter. After the material has been sent from the machine, the cutting operation is switched to the standard size vise and the standard size vise feed mechanism, so that the cutting length less than the length operation of the long size vise feed mechanism can be set by the standard size vise feed mechanism. It can be obtained rationally in cooperation with dimensional operation.

[Brief description of the drawings]

FIG. 1 shows a band saw according to an embodiment of the present invention in FIG.
It is the front view seen from the front near A line.

FIG. 2 is a plan view of the sizing device for the band sawing machine as viewed from above.

FIG. 3 is a side view of the sizing device for the band sawing machine as viewed from the right side.

FIG. 4 is a front view of the standard sizing device integrated with the band sawing machine as viewed from the front near line BB in FIG. 3;

FIG. 5 is a front view of the long sizing device attached to the band sawing machine as viewed from the front near line CC of FIG. 3;

FIG. 6 is a block diagram showing a flow of control by a control unit.

FIG. 7 is a plan view of a band sawing machine sizing device according to a conventional example viewed from above.

FIG. 8 is a side view of the sizing device of the band sawing machine as viewed from the right side.

FIG. 9 is a plan view of a band sawing machine according to another conventional example as viewed from above.

FIG. 10 is a side view of the band sawing machine as viewed from the right side.

[Explanation of symbols]

Reference Signs List 1 sizing device 11 main vice 12 standard sizing vise 13 telescopic cylinder (standard sizing vise feeding mechanism) 14 long sizing vise 15 feed screw mechanism (long sizing vice feeding mechanism) 16 control unit (control means) 17 Switching unit (switching means) 5 End face detection device (detection means) W Round steel (work) X Band saw machine (cutting machine) X1 Base

Claims (3)

[Claims] 1. A sizing device for a cutting machine for transporting a workpiece in a longitudinal direction so as to obtain a preset cutting length, comprising: a main unit provided in proximity to a cutting position of the workpiece on a base of the cutting machine. A vise, a standard sized vise movably in the approaching / separating direction between the main vise in a short distance in the longitudinal direction of the work or a short distance in the longitudinal direction of the work, and holding the work, and a standard sizing vise in the approaching / separating direction A standard vise feed mechanism for moving the workpiece in a longitudinal direction of the work in the longitudinal direction of the work with respect to the standard size vise. A long size vise, a long size vise feed mechanism for moving the long size vise in the approaching / separating direction, a clamping operation of the standard size vise, and a standard size vise feeder Control means for controlling the sizing operation of the structure, the clamping operation of the long sizing vise and the sizing operation of the long sizing vise feed mechanism, and the control object by the control means is the standard sizing vise and the standard sizing. Switching means for switching to the vise feed mechanism side, or to the long size vise and the long size vise feed mechanism side, and the main vice, the standard size vise and the standard size vice feed mechanism are provided to the cutting machine. The sizing device for a cutting machine, wherein the long sizing vise and the long sizing vise feed mechanism are detachably connected to the cutting machine while being integrally assembled. 2. A sizing device for a cutting machine according to claim 1, further comprising a detecting means provided on the long sizing vise for detecting a position of a rear end face of the work, and a switching means comprising the detecting means. , And when the position of the rear end face of the work is not detected, the long sizing vise is controlled so that the long sizing vise holding operation and the sizing operation of the long sizing vise feed mechanism are controlled. While switching to the long-size vice feed mechanism side, when the position of the rear end face of the work is detected, the standard-size vise pinch operation and the standard-size vise feed mechanism are controlled so that they can be controlled. A sizing device for a cutting machine, wherein the sizing device is switched to a sizing vise and a standard sizing vise feeding mechanism. 3. The sizing device for a cutting machine according to claim 2, wherein the switching means receives a detection signal from the detection means, and sets the length of the fixed-size vice feeding mechanism longer than a preset cutting length. When the position of the rear end face of the work is detected at a position where the backward movement distance due to the sizing operation is short, the clamping operation of the long sizing vise and the sizing operation of the long sizing vise feed mechanism are controlled at the detected position. Is switched to the long sizing vise and the long sizing vise feed mechanism side, and when the sizing operation is completed, the work by the sizing operation of the long sizing vise feeding mechanism from the detection position is performed. Switch to the standard size vice and the standard size vise feed mechanism side so that the required length of the remaining work that was shorter than the material feeding distance can be obtained by the material feeding distance by the standard size vise feed mechanism Reko And wherein, the measuring device of the cutting machine.