JP4754130B2 - Work support liner for angle cutting machine - Google Patents

Description

[0001]
[Industrial application fields]
In the cutting machine capable of cutting an angle such as various saws, the present invention always supports the immediate lower part of the cutting position of the workpiece in conjunction with the horizontal turning angle of the cutting tool (saw blade), thereby achieving stable cutting. The present invention relates to a workpiece support liner that realizes efficient angle cutting work.
[0002]
[Prior art]
FIG. 7 shows an angle-cutting band saw as an example of an angle-cutting machine that can cut a workpiece at an arbitrary angle between 0 ° (right angle) and 60 ° with respect to the longitudinal direction. This angle-cutting band saw machine is disposed on a base 1 having a receiving roller, a feeding vise, a main vise, a swivel support, and the like for placing a workpiece W such as a steel material, and an upper portion of the base 1. It has a saw frame 2 that can be tilted in the vertical direction and pivotable in the horizontal direction. The saw frame 2 is provided with a drive wheel and a driven wheel, and the band saw blade 3 that is stretched endlessly between the drive wheel and the driven wheel is driven and driven endlessly by a drive wheel that is rotated by a motor 4. It is like that.
[0003]
When the workpiece W is angle-cut by this angle-cutting band saw, the saw blade 3 (saw frame 2) is turned to a desired angle for cutting, but the horizontal is fixedly disposed in front of the main vice. The front table 5 is slightly lower than the height of the receiving roller, that is, the lower surface of the work W so as not to interfere with the lowermost saw blade 3 when the saw blade 3 is turned at an angle. That is, there is a slight level difference between the lower surface of the cut-off side end portion of the workpiece W and the front table 5. If the workpiece W is cut with this level difference, the lower surface of the cut-off side end portion of the workpiece W becomes unsupported, and stable cutting cannot be performed.
[0004]
Therefore, as shown in FIGS. 8 to 10, the work support liners 6 and 7 are placed on the upper surface of the front table 5, and the lower end portion of the positioning pin 8 vertically penetrated through a plurality of locations of the liners 6 and 7 is provided. It was fitted in a pin hole provided in the front table 5. The liners 6 and 7 are composed of two steel plates having inclined portions. When the angle is cut, two liners 6 and 7 are arranged in a rectangular shape as shown by the solid line in FIG. One liner 6 is used as shown by a chain line. The workpiece support liners 6 and 7 are manually changed from the normal position (0 ° cut position) to the angle cut position by the operator each time the angle is cut. The front table 5 is usually formed with a plurality of holes for fitting the positioning pins 8 in accordance with several kinds of angle cut angles.
[0005]
[Problems to be solved by the invention]
The work of manually changing the workpiece support liners 6 and 7 each time the workpiece W is turned is very troublesome, and the operator forgets to change the location or is not moved or moved too much (difference to an inappropriate hole in the positioning pin 8). For example, the workpiece support liners 6 and 7 may be cut with a saw blade.
[0006]
Further, since the hole for fitting the positioning pin 8 only supports several kinds of angle cutting, when cutting at an intermediate angle between these angles, it can be supported only at a position slightly away from the cutting position of the workpiece W. There was also a problem that stable cutting was not possible.
[0007]
An object of the present invention is to eliminate the need for the operator to manually change the workpiece support liner every time the workpiece is turned, and to support the immediate lower portion of the workpiece cutting position by always interlocking the workpiece support liner with the turning of the saw blade. Thus, it is to increase the efficiency of the angle cutting operation and to enable stable cutting.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a workpiece support liner for an angle cutting machine according to claim 1 of the present invention is provided with a swivel support on a base on which a work is placed, and the swivel that can swivel horizontally in the swivel support. A saw frame having a band saw blade is movably disposed on an end of a horizontal arm portion that is fitted with a base and extends radially outward from the swivel base, and feeds the work of the swivel base. In a cutting machine for angle cutting in which a front table that is one step lower than the work placement surface is disposed on the material direction side, a plate-like work having an upper surface on the upper surface of the front table that is the same height as the work placement surface A lower support liner is disposed, and one end of the work lower support liner is rotatably attached to a position in the vicinity of the feeding direction of the turning center position of the saw frame in a horizontal direction, and the other end of the work lower support liner is connected to the band saw blade. Extending in the longitudinal direction and said From times table and the horizontal arm portion by connecting to the portion extended to the opposite side to the workpiece prop liner so as to rotate in conjunction with the turning of the saw frame.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to an angle cutting band saw will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the angle-cut band saw machine includes a receiving roller 20 for placing the workpiece W, a feeding vise 21 driven by a cylinder to grip the workpiece from both sides, and a feeding vice 21. A feed cylinder 23 that moves back and forth in the longitudinal direction of the workpiece W, a main vise 24 including a main reference jaw 25 that is driven by the cylinder and grips the workpiece W from both sides at a position immediately before cutting, and a workpiece W at a position immediately after the workpiece is cut. The base 1 is provided with a front reference jaw 19 with a base 18, a main vice 24 including a main reference jaw 25, a turning support 27 on which the front reference jaw 19 is placed, which are supported from one side. A saw frame 2 is further arranged on the upper portion of the base 1 so as to be able to tilt in the vertical direction (can be moved up and down) and turn in the horizontal direction. A drive wheel and a driven wheel are provided in the saw frame 2, and a band saw blade 3 is stretched between the drive wheel and the driven wheel in an endless manner. When the drive wheel is rotated by a motor (not shown), the band saw blade 3 Is driven endlessly.
[0011]
As shown in detail in FIGS. 2 and 3, the saw frame 2 is supported on a swivel base 28 that is fitted on a swivel support 27 centered on a swivel center 26 in FIG. The swivel base 28 has a horizontal arm portion 39 extending radially outward, and the saw frame 2 is mounted on an end portion of the horizontal arm portion 39 so as to be movable up and down by a lifting cylinder 41 about a fulcrum shaft 40. ing.
[0012]
A front table 5 that is one step lower than the workpiece placement surface is disposed on the material feeding direction side of the turning support 27. A workpiece support liner 29 is disposed on the upper surface of the front table 5 so as to be rotatable in the horizontal direction. The upper surface of the workpiece support liner 29 is set at the same height as the workpiece mounting surfaces of the turning support 27 and the receiving roller 20. As shown in FIG. 4, the workpiece support liner 29 has a linear long plate shape, and one end of the workpiece support liner 29 is rotated around a center pin 30 that is vertically installed near the feed center side position of the turning center 26 position of the saw frame 2. It is mounted movably. The other end of the workpiece support liner 29 extends in the longitudinal direction (cutting line direction) of the band saw blade 3 of the saw frame 2 along the upper surface of the front table 5, and the other end of the workpiece support liner 29 extends in the longitudinal direction of the workpiece support liner 29. A U-shaped cutout 31 is formed which extends to the top and is open at the front end side.
[0013]
On the other hand, a protruding bar bracket 32 extending radially outward is attached to the swivel base 28 of the saw frame 2 on the side opposite to the horizontal arm portion 39. A protruding bar 33 is fixed to the front end portion of the protruding bar bracket 32 so as to extend upward in the vertical direction. The upper end portion of the protruding bar 33 is rotatably fitted in the notch 31 of the workpiece support liner 29.
[0014]
The workpiece support liner 29 for an angle cutting machine according to the present invention is configured as described above, and the workpiece W is cut using the workpiece support liner 29 as follows. First, the workpiece W is gripped by the material feeding vise 21, and in this state, the material feeding vise 21 and the workpiece W are integrally fed to the right in FIG. 1 by the material feeding cylinder 23. The workpiece W is protruded by a predetermined length in front of the main vice 24 repeatedly. Then, the main vice 24 is closed and the workpiece W is clamped by the main vice 24 including the main reference jaw 25 as shown in FIG. 3, and in this state, the saw frame 2 is turned to a desired horizontal angle, The motor is driven to circulate the band saw blade 3. Next, the work frame W is cut by lowering the saw frame 2.
[0015]
When the saw frame 2 is swung horizontally, the projecting bar bracket 32 also swivels together with the saw frame 2, and the workpiece support liner 29 connected via the projecting bar bracket 32 and the projecting bar 33 is the same as the saw frame 2. Turn to. Accordingly, the lower surface of the workpiece W is reliably supported by the workpiece support liner 29 that is always adjacent to the vicinity of the feeding side of the band saw blade 3 in a plan view at an arbitrary turning position of the saw frame 2. For this reason, the workpiece W can be stably cut without worrying about the position of the workpiece support liner 29 at all.
[0016]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be applied to, for example, a column-type band saw machine in which the saw frame 2 is guided up and down by a vertical column. Also, it can be similarly applied to angle cutting machines other than the band saw.
[0017]
【The invention's effect】
In the present invention, since the workpiece support liner that rotates in conjunction with the turning of the saw frame is disposed as described above, it is not necessary for the operator to manually change the workpiece support liner every time the angle is cut. Cutting efficiency can be greatly increased. Further, the operator does not forget to replace the work support liner, lack of movement, or move too much, and the work support liner is not cut with a saw blade. In addition, since the immediate lower portion of the cutting position can be always supported by the workpiece support liner at an arbitrary cutting angle, stable cutting can be performed.
[0018]
[Brief description of the drawings]
FIG. 1 is a plan view of an angle cutting cutter equipped with a workpiece support liner according to the present invention.
FIG. 2 is a side view of the same angle cutting machine.
FIG. 3 is a front view of the same angle cutting machine.
FIG. 4 is an enlarged plan view of the main part of the cutting machine for angle cutting same as above.
FIG. 5 is an enlarged front view of the main part of the cutting machine for angle cutting.
FIG. 6 is an enlarged side view of the main part of the above-described cutting machine for angle cutting.
FIG. 7 is a perspective view of a conventional angle cutting machine.
FIG. 8 is a plan view of the periphery of the workpiece support liner of the cutting machine for angle cutting.
FIG. 9 is a front view of the periphery of the workpiece support liner of the cutting machine for angle cutting.
FIG. 10 is a side view of the periphery of the workpiece support liner of the cutting machine for angle cutting.
[Explanation of symbols]
1 Base 2 Saw Frame 3 Band Saw Blade 4 Motor 5 Front Table 6, 7 Liner 8 Pin 18 Base 19 Front Reference Jaw 20 Receiving Roller 21 Feeding Vise 23 Feeding Cylinder 24 Main Vise 25 Main Reference Jaw 26 Turning Center 27 Turning Support Table 28 Swivel table 29 Liner 30 Center pin 31 Notch 32 Projection bar bracket 33 Projection bar 39 Horizontal arm 40 Support shaft 41 Lifting cylinder W Workpiece

Claims (1)

A base on which a work is placed is provided with a swivel support, and a swivel that can be swiveled in a horizontal direction is fitted to the swivel support, and is mounted on an end of a horizontal arm that extends radially outward from the swivel. A cutting machine for angle cutting, in which a saw frame having a band saw blade is disposed so as to be able to move up and down, and a front table that is one step lower than the work placement surface is disposed on the workpiece feeding direction side of the swivel support. In
A plate-like workpiece support liner having an upper surface that is the same height as the workpiece placement surface is disposed on the upper surface of the front table, and one end of the workpiece support liner is positioned near the feeding direction side of the turning center position of the saw frame The other end of the workpiece support liner is extended in the longitudinal direction of the band saw blade and connected to a portion extending from the swivel base to the opposite side of the horizontal arm portion. Thus, the workpiece support liner for an angle cutting machine , wherein the workpiece support liner is rotated in conjunction with the turning of the saw frame .

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