JPH0985529A - Cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a material to be cut from flawing of a clamp by bending. SOLUTION: A pair of spring means 21, 22 are disposed opposedly to each other to support a frame 17 on the free end of the guide frame 17 in a neutral position where a material W to be cut abuts against the respective lateral reference surfaces 6a, 10a of a cutting vice 2 and material sending vice 4. A push-pull cylinder 23 to incline a guide frame 17 is disposed so that the lateral reference surface 10a of the material sending vice 4 is biased in a first bias position parted from the material W to be cut and a second bias position of the material W to be cut parted from the lateral reference surface 6a of the cutting-off vice 2 relative to the neutral position by the lateral push-pull of the free end. The spring means 21 or 22 on the bias side and opposite side respectively in the first and second bias positions is set to the non-supporting condition for the guide frame 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for cutting a material to be cut such as a steel rod to a predetermined size.
When holding the material to be cut with the material feeding vise and moving the material feeding vise forward from the backward limit position toward the cutting position to the forward limit position, or while cutting the residual material after cutting, use the material feeding vise while holding the residual material with the cutting vise. Cutting in which the material to be cut is not brought into contact with the lateral reference surface of the feeding vise or the cutting vise when it is opened and moved backward to the retreat limit position, so that the material to be cut is not scratched Regarding the machine.

[0002]

2. Description of the Related Art A conventional cutting machine of this type, for example, a circular saw cutting machine will be described with reference to FIGS. 4 to 10. FIG. 4 is a plan view of the cutting machine and FIG. 5 is a side view thereof. As shown in these drawings, a cutting vise 2 is provided at the cutting position where the circular saw 1 is provided, and the material W to be cut fed on the support roller 3 is provided to the cutting position behind the cutting position. A material feeding vise 4 for conveying a predetermined length is provided so as to be movable back and forth by a predetermined stroke.

As is apparent from FIG. 9, the cutting vise 2 is provided integrally with a base portion 5 on which the material W to be cut is placed, and a lateral reference for supporting the lateral side surface of the material W to be cut. A fixed vise jaw 6 provided with a surface 6a, a movable vise jaw 7 which can be moved laterally relative to the fixed vise jaw 6, and a movable vise jaw 8 which can be moved longitudinally relative to the upper surface of the base portion 5. Consists of. The material feeding vise 4 is the cutting vise 2
The base portion 9 having the same structure as that of FIG.
A fixed vise jaw 10 having a lateral reference surface 10a for supporting the lateral side surface of the material W to be cut, and the fixed vise jaw 1
The movable vice jaw 11 is movable toward and away from 0. This movable vice jaw 11 is a driving cylinder 11S.
Is linked to. As shown in FIGS. 4 and 5, the material feeding vise 4 is attached to a slide base 14 which is slidable along a pair of guide shafts 13 on both sides extending in the feeding direction of the material W to be cut. 14 is operatively connected to a suitable driving means such as a ball screw.

The guide shafts 13 and 13 form a guide frame 17 together with a pair of front and rear horizontal frames 15 and 16 connecting both ends of the guide shafts 13. The guide frame 17 is provided at a lower center of the rear horizontal frame 16. It is pivotally attached to the fixed base 18 via the vertical pivot 16a, and can swing horizontally around the vertical pivot 16a, so that the material feeding vise 4 also swings about the vertical pivot 16a. be able to. As shown in FIG. 4, on the free end side of the guide frame 17, on the left and right sides of the front lateral frame 15, a lateral pushing cylinder 19 is provided.
And the lateral pushing spring 20 are arranged so as to face each other, and the guide frame 17 resists the urging force of the lateral pushing spring 20 by the extension operation of the lateral pushing cylinder 19 so that the vertical pivot 16
The cylinder 19 is tilted in the direction of the arrow shown in FIG.
Is contracted, it is pushed by the spring 20 and tilted in the direction of the arrow shown in FIG.

The cutting operation of the material W to be cut by the cutting machine having the above-mentioned structure will be described. In FIGS. 4 and 5, the cutting vise 2 is closed to grip the material W to be cut, and the material feeding vise 4 is shown.
Shows a state in which it is closed at a position advanced to the cutting position side and grips the material W to be cut, and the circular saw 1 cuts in this state. At this time, in the guide frame 17, the material W to be cut has the lateral reference surfaces 6 a and 10 a of the cutting vise 2 and the material feeding vise 4.
In a neutral position (see FIG. 4). When the cutting is completed, as shown in FIG. 6, the movable vise jaws 11 of the material feeding vise 4 are retracted to remove the material W to be cut while the remaining material portion of the material W is still held by the cutting vise 2. After the opening, it retreats to the retreat limit position shown by the phantom line in the figure.
At the time of this retreat, the guide frame 17 tilts in the direction of the arrow in the figure around the vertical pivot 16a by the extension operation of the lateral pushing cylinder 19, whereby the feeding material vise 4 laterally moves to the outside of the feeding path. A gap A1 is formed between the lateral reference surface 10a of the fixed vise jaw 10 in the material feeding vise 4 and the lateral side surface of the material W to be cut. Therefore, in such a state, when the feeding material vise 4 retreats from the position shown by the solid line to the position shown by the phantom line in the same figure, the lateral reference surface 10a of the feeding material vise 4 does not contact the material W to be cut and the material W to be cut W Is not scratched.

As shown in FIG. 7, the feeding material vise 4 moves backward to the backward limit position and then advances toward the cutting position while holding the material W to be cut by the approaching movement of the movable vice jaw 11. The cutting vise 2 releases the material W to be cut. In this way, when the material feeding vise 4 grasps the material W to be cut and advances a predetermined stroke,
The guide frame 17 has a cylinder 19 in a free state.
It is pushed by the biasing force of the spring 20 on the opposite side, and tilts in the direction of the arrow in FIG. 7 about the vertical pivot 16a as shown in FIG.
Thereby, the material feeding vise 4 pushes the material W to be cut in the same direction, and between the lateral reference surface 6a of the fixed vise jaw 6 and the lateral side surface of the material W to be cut in the cutting vise 2 as shown in FIG. Figure 9
A gap B is formed as shown in FIG. Therefore, when the material feeding vise 4 moves forward from the backward limit position in FIG. 7 to the cutting position in such a state, the lateral side surface of the material W to be cut does not come into contact with the lateral reference surface 6a of the cutting vise 2. The material W to be cut is not damaged by the lateral reference surface 6a.

[0007]

As described above, in the conventional cutting machine, the lateral pushing cylinder 19 and the lateral pushing spring 20 are arranged to face each other on the free end side of the guide frame 17, and the horizontal pushing cylinder 19 and the lateral pushing spring 20 are opposed to each other. The guide frame 17 is tilted around the vertical pivot 16a against the urging force of the lateral pushing spring 20 by extending the lateral pushing cylinder 19 (see FIG. 6), and the lateral pushing cylinder 19 is moved. It is designed to be tilted in the opposite direction (see FIG. 7) by pushing in the free state with the lateral pushing spring 20 (see FIG. 7), and as shown in FIG. After advancing the material feeding vise 4 to the cutting position side in a state where the gap B is formed between the lateral side surface of the cutting material W, when cutting the material W to be cut, the cutting vise 2 is closed (clamping operation). ) And guide flakes through the material to be cut W When the material W to be cut has a small diameter when moving the material 17 to the lateral reference surface 6a side, the tip end side of the material W to be cut is gripped by the material feeding vise 4 as shown by the phantom line in FIG. When the bent portion is bent, the side surface on the tip side of the workpiece W may be damaged by the clamp.

That is, by clamping the cutting vise 2, the material W to be cut clamped by the material feeding vise 4 is cut.
When the guide frame 17 is moved to the side of the horizontal reference plane 6a via the, the free end side of the guide frame 17 is pushed by the lateral pushing spring 20, so that the biasing force of this spring 20 causes the feeding material vise 4 to move. A load resistance is applied to the gripped portion of the material W to be gripped, and the load resistance causes the load resistance of FIG.
There is a problem that the tip side of the material W to be cut is deformed into a curved shape as shown by the phantom line, and the side surface of the tip of the material W to be cut is clamped by the fixed clamp jaws 6.

An object of the present invention is to provide a cutting machine which can solve the above problems.

[0010]

According to a first aspect of the present invention, a horizontal reference surface 6a for supporting a lateral side surface of a material W to be cut is provided at a cutting position.
A cutting vise 2 including a fixed vise jaw 6 provided with a movable vise jaw 7 and a movable vise jaw 7 capable of moving in the distance is provided, and a lateral reference surface 10a supporting a lateral side surface of a material W to be cut is provided behind the cutting position. A feeding material vise 4 composed of a fixed vise jaw 10 and a movable vise jaw 11 having a groove is provided on a guide frame 17 via a slide base 14 so as to be movable back and forth by a predetermined stroke with respect to a cutting position. In the cutting machine capable of horizontally swinging about the vertical pivot 16a at the rear end in the direction, the guide frame 1 is provided on both sides of the free end of the guide frame 17.
A pair of spring means 21 and 22 for supporting the material to be cut 7 in a neutral position where the material W to be cut abuts the lateral reference surfaces 6a and 10a of the cutting vise 2 and the material feeding vise 4 are arranged opposite to each other, and one of the free end portions is provided. Laterally, by pushing and pulling the free end portion in the lateral direction, the guide frame 17 is moved to the neutral position so that the lateral reference surface 10a of the material feeding vise 4 is separated from the material W to be cut and the material to be cut. Pushing and pulling for tilting the guide frame 17 against the biasing force of the spring means 21 or 22 located on the deflection side so that the material W is deflected to the second deflection position away from the lateral reference surface 6a of the cutting vise 2. And a spring means 21, which is disposed on the opposite side to the deflecting side at the first deflecting position and the second deflecting position, respectively.
22 is configured to be in a non-supporting state with respect to the guide frame 17.

According to a second aspect, in the cutting machine according to the first or second aspect, each spring means 21, 22 has a cylindrical casing 21a, 22a, and a coil spring 21b, 22b inserted into the casing. It is composed of contact pieces 21c and 22c which are connected to the coil spring and contact the free end of the guide frame 17.

A third aspect of the present invention is the cutting machine according to the first aspect, wherein the push-pull cylinder 23 is an air cylinder.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a cutting machine according to the present invention will be described below with reference to FIGS. 1 to 3, but FIGS.
The members common to those of the conventional cutting machine shown in 1 are denoted by the same reference numerals, and the description thereof will be simplified or omitted, and the description will focus on the components different from those of the conventional cutting machine.

As shown in FIGS. 1 to 3, the vertical pivot 16a
Guide frame 17 that can swing horizontally around
At the free end of the guide frame 17, the guide frame 17 is cut on the left and right sides of the horizontal frame 15 forming a part of the guide frame 17 by the lateral reference surface 6a of the vise 2 and the lateral reference of the feeding vise 4. A pair of spring means 21 and 22 for supporting the neutral position (see FIG. 1) in contact with the surface 10a are arranged opposite to each other. Further, for pushing and pulling the free end portion of the guide frame 17 to one side of the horizontal frame 15 of the guide frame 17, that is, to the same side as one of the spring means 21 and 22 of the spring means 21 and 22. A cylinder 23 is provided and is interlocked with the horizontal frame 15.

The push / pull cylinder 23 is composed of an air cylinder. By pushing and pulling the free end of the guide frame 17 in the lateral direction, the guide frame 17 is
With respect to the neutral position, the lateral reference surface 10a of the material feeding vise 4 is deflected to a first deflection position in which the lateral reference surface 10a is separated from the material W to be cut and a second deflection position in which the material W to be cut is separated from the reference surface 6a of the cutting vise 2. In addition, the guide frame 17 is tilted about the vertical pivot 16a against the biasing force of the spring means 21 or 22 located on the deflection side.

Each of the spring means 21, 22 has a cylindrical casing 21a, 22a and the casing 21a, 22a.
The coil springs 21b and 22b are inserted therein, and the abutting pieces 21c and 22c that are connected to the coil springs 21b and 22b and abut against the lateral frame 15 of the guide frame 17. And the guide frame 17
However, as shown in FIG. 2, when the lateral reference surface 10a of the material feeding vise 4 is in the first deflection position away from the material W to be cut, the spring means 21 on the deflected side pulls the pushing and pulling cylinder 23. The spring means 22 on the side opposite to the deflected side becomes unsupported with respect to the guide frame 17, and as shown in FIG.
In the second deflection position away from the reference surface 6a of the guide frame 17, the spring means 21 on the opposite side to the deflected side
The spring means 22 on the deflected side is compressed by the pushing action of the push-pull cylinder 23.

The cutting operation of the material W to be cut by the cutting machine having the above-mentioned structure will be described. In FIG. 1, the cutting vise 2 is closed to grip the material W to be cut, and the feeding material vise 4 is cut. It shows a state in which the material W to be cut is gripped by closing at a position advanced to the position side, and the circular saw 1 cuts in this state. At this time, in the guide frame 17, the material W to be cut has the lateral reference surfaces 6 a and 10 a of the cutting vise 2 and the material feeding vise 4.
The guide frame 1
7 is supported at the neutral position by both spring means 21 and 22, and the push-pull cylinder 23 is in a free state and stopped at the neutral position of the cylinder stroke.

After the cutting of the material W to be cut by the circular saw 1, as shown in FIG. 2, the material feeding vise 4 is moved while the remaining material portion of the material W is still held by the cutting vise 2. After the vise jaw 11 retracts to release the material W to be cut, the vise jaw 11 retracts to the retracted limit position shown by the phantom line in FIG.
At the time of this retreat, the guide frame 17 is pulled by the pulling action by the contraction operation of the push-pull cylinder 23.
6a is tilted in the direction of the arrow in the figure, and at the same time, the material feeding vise 4 laterally moves to the outside of the material feeding path,
A gap A1 is formed between the lateral reference surface 10a of the fixed vise jaw 10 and the lateral side surface of the material W to be cut, and the guide frame 17 is deflected from the neutral position to the first deflection position. At this time, the spring means 21 located on the side deflected to the first deflection position is compressed by the pulling action of the cylinder 23, and the spring means 22 on the opposite side is not supported by the guide frame 17. When the feeding material vise 4 is retracted from the position shown by the solid line to the position shown by the phantom line in the first deflection position, the lateral reference surface 10a of the feeding material vise 4 does not contact the material W to be cut and the material W to be cut Is not scratched.

Thus, as shown in FIG. 3, the material feeding vise 4 moves backward to the backward limit position and then advances toward the cutting position while holding the material W to be cut by the approaching movement of the movable vice jaw 11. The cutting vise 2 releases the material W to be cut. In this way, when the material feeding vise 4 grasps the material W to be cut and advances a predetermined stroke,
The guide frame 17 is tilted in the direction of the arrow in FIG. 3 about the vertical pivot 16a by the pushing action by the extension operation of the push-pull cylinder 23, whereby the feeding material vise 4 pushes the material W to be cut in the same direction. Then, the lateral reference plane 6 of the cutting vise 2
A gap B is formed between a and the lateral side surface of the material W to be cut, and the guide frame 17 is in a state of being deflected from the first deflection position to the second deflection position. At this time, the spring means 21 located on the side opposite to the side deflected to the second deflection position is not supported by the guide frame 17, and the spring means 22 on the deflected side is compressed by the pushing action of the cylinder 23. To be done. When the material feeding vise 4 moves forward from the backward limit position to the cutting position at the second deflection position, the lateral side surface of the material W to be cut does not contact the lateral reference surface 6a of the cutting vise 2 and the lateral reference surface 6
Depending on a, the material W to be cut is not scratched.

As described above, in the state where the guide frame 17 is in the second deflection position, after the material feeding vise 4 moves from the backward limit position to the forward limit position, the cutting vise is cut in order to cut the workpiece W. When the guide frame 17 is clamped to move the guide frame 17 from the second deflection position to the neutral position via the material W to be cut, the spring means 2 located on the lateral reference plane 6a side.
1 is not supported with respect to the guide frame 17,
By setting the push-pull cylinder 23 in the free state,
No biasing force of the spring means 21 is generated in the guide frame 17, so that no load resistance is applied to the gripping portion of the material W to be cut held by the material feeding vice 4. Therefore, even if the material W to be cut has a small diameter, the tip side of the material W does not bend from the portion gripped by the material feeding vise 4 unlike the conventional cutting machine, and the material W is No scratches on the clamp.

Further, in this cutting machine, each spring means 21,
22 is a cylindrical casing 21a, 22a, a coil spring 21b inserted in the casing 21a, 22a,
22b and an abutting piece 2 that is connected to the coil springs 21b and 22b and abuts on the free end of the guide frame 17.
Since it is configured by 1c and 22c, the spring action on the guide frame 17 can be properly performed. Further, since the push-pull cylinder 23 is an air cylinder, compared to the case where a hydraulic cylinder is used as the push-pull cylinder 23, complicated piping is not required, and the push-pull operation of the guide frame 17 and the cylinder It is possible to promptly switch to the neutral position.

[0022]

According to the first aspect of the present invention, the guide frame is at the second deflection position, and the material feeding vise holding the material to be cut is moved from the backward limit position to the forward limit position and then the material to be cut is cut. In order to perform the clamping operation of the cutting vise to move the guide frame to the neutral position through the material to be cut, the spring means located on the lateral reference plane side is not supported by the guide frame. Does not generate the urging force of the spring means, and therefore the load resistance is not applied to the gripping portion of the material to be cut gripped by the material feeding vise. Therefore, even if the material to be cut has a small diameter, the tip side of the material to be cut W does not bend from the portion gripped by the material feeding vise as in a conventional cutting machine, and thus the material to be cut has a clamp scratch. There is no risk of sticking.

According to a second aspect of the present invention, each spring means is provided with a cylindrical casing, a coil spring inserted in the casing, and an abutting member which is connected to the coil spring and abuts on a free end portion of the guide frame. By configuring with parts,
The spring action on the guide frame can be properly performed. Further, by using the air cylinder as the push-pull cylinder as in claim 3, compared with the case where the hydraulic cylinder is used, complicated piping is not required, and the push-pull operation of the guide frame and the neutral of the cylinder are performed. It is possible to promptly switch to the position.

[Brief description of drawings]

FIG. 1 is a plan view of a cutting machine according to the present invention, showing a state in which a guide frame is in a neutral position.

FIG. 2 is a plan view similar to FIG. 1, showing a state where the guide frame is in a first deflection position.

FIG. 3 is a plan view similar to FIG. 1, showing a state in which the guide frame is in a second deflection position.

FIG. 4 is a plan view showing a conventional cutting machine.

5 is a side view of the cutting machine shown in FIG. 4. FIG.

FIG. 6 is a plan view similar to FIG.

FIG. 7 is a plan view similar to FIG.

8 is a cross-sectional view taken along line XX of FIG.

9 is a cross-sectional view taken along line YY of FIG.

FIG. 10 is an explanatory view showing a state in which the tip side of the material to be cut is bent.

[Explanation of symbols]

1 Circular Saw 2 Cutting Vise 4 Feed Vise 6 Fixed Vise Jaw 6a Horizontal Reference Plane of Fixed Vise Jaw (Horizontal Reference Plane of Cutting Vise) 7 Movable Vise Jaw (Horizontal Movement) 10 Fixed Vise Jaw 10a Horizontal Reference Plane of Fixed Vise Jaw (Transverse reference plane of material feeding vise) 11 movable vise jaw 13 guide shaft 14 slide base 16a vertical pivot 17 guide frame 21 spring means 22 spring means 23 push-pull cylinder W to be cut material

Claims (3)

[Claims] 1. A cutting vise comprising a fixed vise jaw having a lateral reference surface for supporting a lateral side surface of a material to be cut and a movable vise jaw movable relative to the fixed vise jaw at the cutting position, and the rear of the cutting position. Is a feeding vise consisting of a fixed vise jaw with a horizontal reference surface that supports the lateral side surface of the material to be cut and a movable vise jaw, and it can be moved forward and backward by a predetermined stroke to the cutting position on the guide frame via the slide base. In a cutting machine provided with a guide frame that is horizontally swingable around a vertical axis at the rear end in the material feeding direction, the guide frame is cut on both sides of the free end of the guide frame. A pair of spring means for supporting at a neutral position in contact with the respective lateral reference surfaces of the cutting vise and the material feeding vise are arranged opposite to each other, and the free end portion is laterally pushed and pulled to one side of the free end portion. You By doing so, the guide frame is deflected with respect to the neutral position into a first deflection position in which the lateral reference surface of the material feeding vise is separated from the material to be cut and a second deflection position in which the material to be cut is separated from the lateral reference surface of the cutting vise. Is provided with a push-pull cylinder for tilting the guide frame against the biasing force of the spring means located on the deflecting side, and on the opposite side to the deflecting side at the first deflecting position and the second deflecting position, respectively. A cutting machine characterized in that the positioned spring means is configured to be unsupported with respect to the guide frame. 2. The spring means comprises a tubular casing, a coil spring inserted into the casing, and an abutting piece connected to the coil spring and abutting on a free end of the guide frame. The cutting machine according to claim 1. 3. The cutting machine according to claim 1, wherein the push-pull cylinder is an air cylinder.