JPH0966417A - Band saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut a heavy work easily at an arbitrary place. SOLUTION: A band saw is provided with a cutting part for rotating and moving the edge of a band saw, a moving and positioning part 19 for moving and positioning the cutting part to a cutting position along a work W and a work table 13 for placing the heavy work W. Therefore, it can be cut without moving and positioning the heavy work W. The moving and positioning part 19 is provided with a saw edge housing 107, a main column 39 for supporting the saw edge housing 107 vertically slidably and an auxiliary column for holding the saw edge housing 107 vertically slidably and also for restraining the rotation and is installed integrally by a frame 29 by which the main column 39 and the auxiliary column can straddle the work W. Therefore, as the main column 39 and the auxiliary column are connected rididly through a gate type frame 29, the saw edge housing 107 can be lowered straight without swinging at the cutting time.

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 for cutting a heavy work piece.

[0002]

2. Description of the Related Art Since the horizontal band saw machine shown in FIG. 5 is much more general than the conventional one, its outline will be described below.

The band saw machine 101 is mainly composed of a cutting section 103 for cutting the work W and a supporting section 105 for mounting and supporting the work W and fixing the work W at the time of cutting.

The cutting portion 103 has a saw blade housing 107, and inside the saw blade housing 107, a drive wheel 111 which is rotationally driven by a drive motor 109.
And a driven wheel 113 that is rotatable. A band saw blade BS is wound around the drive wheel 111 and the driven wheel 113. The band saw blade BS includes left and right saw blade guides 115 provided on the saw blade housing 107.
By means of 115, the saw blade housing 107 is oriented vertically downward in the cutting area on the lower side.

The saw blade housing 107 is guided and supported by a main column 119 provided upright on a base 117, and is vertically moved by a cylinder 121 provided in the main column 119. Further, the saw blade housing 107 is guided by the auxiliary column 123 installed upright on the base 117 so as not to rotate during cutting.

On the supporting part 105, a work table 125 is provided on which a work W to be cut is placed and is supplied to the cutting part 103.
And a vise mechanism 12 for clamping and fixing the work W at the time of cutting
Have 7. The vise mechanism 127 includes a reference vise 127F fixedly provided at a position serving as a reference of a work position at the time of cutting, and a moving vise 127M provided facing the reference vise 127F so as to be able to approach and separate from each other. Have

An operation panel 12 for operating the band saw machine 101 is provided in front of the saw blade housing 107 (front side in FIG. 5).
9 and steps 131 and 133 for repair are provided.

Therefore, the operator operates the operation panel 129 to lower the saw blade housing 107 by driving the cylinder 121 with respect to the work W clamped and fixed at the cutting position by the vise mechanism 127, and the driving motor 109 is driven. The work W is cut by the band saw blade BS that rotates by driving.

[0009]

However, in such a conventional technique, there is no problem when the weight of the work W is not so large, but when the weight of the work W is large, it corresponds to the above-mentioned supporting portion 105. Is required, and the size of the entire apparatus becomes large, which causes problems in terms of cost and space.

An object of the present invention has been made by paying attention to the above-mentioned conventional techniques, and particularly to provide a band saw machine capable of easily cutting a heavy work.

[0011]

In order to achieve the above object, a band saw machine according to a first aspect of the present invention is a saw blade housing for rotating an endless band saw blade to cut a work, and a saw blade housing. It is characterized in that it is provided with a movement positioning portion for moving and positioning the housing to a cutting position along the work, and a work table on which the work is placed.

Therefore, it is possible to cut the work W at an arbitrary position by moving and positioning the cutting portion by the moving positioning portion without moving and positioning the heavy work W as in the conventional case.

A band saw machine according to a second aspect of the present invention is the first aspect.
The cutting unit has a saw blade housing provided with a band saw blade that can travel, a main column that supports the saw blade housing in a vertically movable manner, and an auxiliary column that prevents rotation of the saw blade housing. The positioning unit has a rail provided in the direction of the work and a moving base that is movable and positionable on the rail and supports the main column, and the auxiliary column uses the frame straddling the work to move the moving base. It is characterized in that it is integrally provided in the.

Therefore, since the main column and the auxiliary column for supporting the saw blade housing so as to be movable up and down and not to rotate are provided on the movable base, the main column and the auxiliary column move together with the movable base.
Positioned. Further, since the main column and the auxiliary column are rigidly connected to each other through the frame, the saw blade housing can be lowered straight during the cutting process without shaking. Thereby, the work can be cut at an accurate position.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, the same parts as the parts described in the section of the related art are given the same reference numerals,
Duplicate description will be omitted.

1 to 3 show an entire band saw machine 1 as a cutting device according to the present invention. In FIG. 2, the band saw machine 1 is provided with an oil pan 3 for collecting cutting fluid. This cutting fluid recovery oil pan 3 is made of concrete in a rectangular shape, and its circumference is raised, and is slightly inclined so that the cutting fluid flows into the cutting fluid bit 5 which is provided one step lower. ing.

At the central portion of the cutting fluid collecting oil pan 3,
A pair of X-axis moving rails 7, 7 and X for moving the saw blade housing 107 in the X-axis direction (horizontal direction in FIG. 2).
A shaft guide 9 is provided. This X-axis moving rail 7,
7 and the cutting oil recovery oil pan 3 below the X-axis guide 9 have an H-shaped steel 1 for reinforcement and centering.
1 is buried.

A V-groove table 13 is provided in the X-axis direction between the X-axis moving rail 7 and the X-axis guide 9. At least the upper portion of the V-groove table 13 is made of a material such as wood that can be cut and is suitable for supporting a heavy object, and a V-shaped or arc-shaped concave portion 13A is formed on the upper surface so that the work W does not move. Has been done. The V-groove table 13 is exchangeably fixed to the cutting fluid recovery oil pan 3, and an H-shaped steel 11 is buried under the V-groove table 13 for reinforcement and centering.

A V-groove table lifter 15 is provided on the cutting fluid collecting oil pan 3 on the right side of the V-groove table 13 in FIG. This V groove table lifter 15
Is a stepped work W as shown by the chain double-dashed line in FIG.
It is provided in order to support the front end portions of the works W having different heights when cutting. This V groove table lifter 1
Although not shown, 5 is provided so as to be vertically movable by a combination of a drive motor and a ball screw / nut or a rack / pinion gear, a cylinder, or the like.

On the X-axis moving rails 7, 7, there is provided a moving base 19 having wheels 17 on the lower side. With reference to FIG. 4 together, this moving pedestal 19 includes, for example, a pinion 2 mounted on a drive motor 21 as a moving mechanism.
3 rotates in the X-axis direction by rotating on the rack 25, and is positioned by the rotary encoder 27 mounted on the drive motor 21.

The rear end of the movable base 19 (right side in FIG. 1)
A gate-shaped frame 29 is provided on the upper surface of, and one of the columns 31 is fixed. The other column 33 is provided on the X-axis guide 9 across the work W, and a narrow guide 35 for preventing the saw blade housing 107 from rotating is provided. A guide roller 37 is provided at the lower end of the narrow guide 35 to support the X-axis guide 9 from above and below so as to be movable in the X-axis direction. Therefore, the narrow guide 35 is vertically restrained by the guide roller 37.

A main column 39 is vertically provided upright in front of the gate-shaped frame 29 on the upper surface of the movable mount 19, and the saw is vertically guided by the main column 39 and the narrow guide 35. A blade housing 107 is provided. This saw blade housing 1
The cylinder 07 moves up and down by the cylinder 41. An operation panel 4 for moving and positioning the movable platform 19 and operating the band saw machine 1 is provided on the front side of the upper surface of the movable platform 19.
3 are provided.

A step 45 for replacing the band saw blade BS is provided at the upper front corner of the cutting fluid collecting oil pan 3.

Next, the cutting operation by the band saw machine 1 described above will be described.

First, a heavy work W having a stepped shape, for example, is placed in the concave portion 13A of the V-groove table 13 by a carrying means such as a crane (not shown). At this time, in the case of a step as shown in FIG. 1, the V-groove table lifter 15 is raised to the lower surface position of the tip of the work W to support the tip of the work W.

Then, the positional relationship between the work W and the band saw blade BS is set, and the drive motor 21 is driven to move / position the movable base 19 to a predetermined position. Position is drive motor 21
The position is detected by the rotary encoder 27 attached to and is fed back to perform accurate positioning.

Positioning of the movable mount 19, that is, the band saw blade B
When the positioning of S is completed, the saw blade housing 107 is lowered by the cylinder 41 while rotating the band saw blade BS to cut the work W.

When it is necessary to replace the band saw blade BS, the movable frame 19 is moved to the position indicated by the chain double-dashed line in FIG. 1 (near the left end in FIG. 1) and the saw blade replacement step is performed. Work with 45.

From the above results, it is possible to cut a heavy work W at an arbitrary position without providing a large work table as in the conventional case. On this occasion,
Since the V-groove table 13 that directly supports the work W is made of a cuttable material such as wood, the work W can be completely cut without damaging the band saw blade BS.

Further, the saw blade housing 107 is not only guided by the main column 39 but also the narrow guide 3
Since it is guided by 5, the saw blade housing 107 can be prevented from rotating in a state where the movement in the X-axis direction is allowed.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. For example, although the vise mechanism for fixing the work W at the time of cutting is not provided in the above-described embodiment, the work W may be fixed by providing the vise mechanism.

Although the drive motor 21 and the rack 25 and the pinion 23 are used for moving / positioning the movable pedestal 19, they may be moved / positioned by other ball screws / nuts or cylinders.

[0033]

As described above, in the band saw machine according to the invention of claim 1, it is possible to cut a work at an arbitrary position without moving and positioning a heavy work as in the conventional case. . Therefore, it is not necessary to provide a large work table, which is advantageous in terms of cost and space.

In the band saw machine according to the second aspect of the present invention, the main column and the auxiliary column are rigidly connected to each other through the portal frame, and the saw blade housing is supported by the main column and the auxiliary column. It can descend straight without shaking during processing. Thereby, the work can be cut at an accurate position.

[Brief description of drawings]

FIG. 1 is a side view showing an entire band saw machine according to the present invention.

FIG. 2 is a plan view seen from a direction II in FIG.

FIG. 3 is a front view seen from the direction III in FIG.

FIG. 4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is a perspective view showing a conventional horizontal band saw machine.

[Explanation of symbols]

 1 Band Saw Machine 13 V Groove Table (Table) 19 Moving Stand (Movement Positioning Section) 35 Narrow Guide (Auxiliary Column) 39 Main Column 103 Cutting Section 107 Saw Blade Housing BS Band Saw Blade W Work

Claims (2)

[Claims] 1. A cutting section for rotating an endless band saw blade to cut a work, a moving positioning section for moving and positioning the cutting section along a work to a cutting position, and a work table on which the work is placed. A band saw machine characterized by comprising: 2. The cutting section has a saw blade housing provided with a band saw blade so that it can travel, and a main column for supporting the saw blade housing in a vertically movable manner and an auxiliary column for preventing rotation of the saw blade housing. Then, the movement positioning unit
It has a rail provided in the work direction and a movable base that is movable and positionable on the rail and supports the main column, and the auxiliary column is integrally formed on the movable base by a frame that straddles the workpiece. The band saw machine according to claim 1, wherein the band saw machine is provided.