JPS601944Y2 - Saw blade steady rest device for circular saw machines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a saw blade steady rest device for a circular saw cutting machine.

Conventionally, in circular saw cutting machines, the saw blade, which is a tool, is fixed to a fixed shaft through a center hole and a flange, but it is a thin tool.
It can only cut materials with dimensions that are approximately 30% of the diameter.

On the other hand, if you have to use a tool with a diameter that is about three times the height of the material to be cut, and therefore have to cut into a sloped part of the material, the tool is likely to bend the cut. .

In addition, in the case of cutting pipes, etc., the actual portion of the workpiece material differs greatly between the upper and lower areas and the center area, so the cutting resistance changes greatly and bending is likely to occur.

The present invention focuses on this point and provides a device that prevents cutting and bending by holding the circular saw blade from both sides in the thickness direction at a position close to the material to be cut.

FIG. 1 shows the cutting head portion of a known circular saw machine, where 1 is a general cutting head, 3 is a swing shaft provided on the machine base, and is a circular saw that is continuously rotated by an electric motor 7. The saw blade 9 is driven by the swing drive link 5, swings around the swing shaft 3, and cuts a workpiece fixed by the main vice 11.

FIGS. 2 and 3 show an example of the present invention, in which the circular saw blade 9 is the same as the conventional one, but the main vice 11 is shown in more detail.

That is, the fixed lower vice jaw 15 of this main body vice has a V-shaped groove shape that spreads upward, whereas the movable upper vice jaw 13 that approaches and leaves in the mold direction is vertically moved up and down by left and right connecting rods. A V-shaped protrusion corresponding to the groove of the lower vice jaw is fixed to the bottom of the square piece, and the end of this V-shaped protrusion touches one side of the body of the circular saw blade 9. A steady rest rod 17 serving as a first steady rest member is mounted so that its position can be adjusted and fixed in the front-rear direction (horizontal direction in FIGS. 2 and 3) using fixing bolts 19.

On the other hand, in front of the circular saw blade 9 (on the right side in Figs. 2 and 3), the material to be cut is placed on the left and right (horizontal direction perpendicular to the longitudinal direction of the material to be cut 3, in the upper and lower directions in Fig. 2). A horizontal vise 21 is provided for the center swing part to be clamped from the direction (direction), and further in front of it, on one side wall of the cut piece chute 23,
A steady rest stand 29 is provided which can be vertically adjusted and fixed by means of elongated holes 25° 25 and fixing bolts 27, 27.

A horizontal holding plate 31 beyond the cutting center position is attached by welding to the upper part of the steady rest stand, and the steady rest rod 17 for the main body vise is placed at the cutting center vertical line position of the horizontal holding plate with the circular saw blade 9 in between. A front steady rest rod 33 as a second steady rest member whose end part can freely come into contact with the other side of the body of the circular saw blade 9 facing the front steady rest member is provided so that the position can be adjusted and fixed back and forth with a fixing bolt 35. .

Note that 37 is an imaginary diagram of the material to be cut.

When using the apparatus configured as described above, the height of the front steady rest bar 33 is fixed to match the height of the steady rest bar for the main body vise, depending on the diameter of the material to be cut.

The upper and lower limits of the swing of the circular saw blade are regulated by a mechanism, a part of which is shown in FIG. In the middle between
The circular saw blade stops rising, and the upper vice jaws 13 and the horizontal vise 21 are slightly opened to feed the material. After the material has been fed the required length, all the vises clamp the material to be cut.

A cutting operation is then performed to complete one cycle.

Therefore, the circular saw blade is held between the front and rear steady rest bars during the entire cutting period, and the bar itself is not cut or damaged by the saw blade, and even a thin circular saw blade does not touch the surface of the material to be cut. Even if there is an inclination, the saw blade can be prevented from curving or vibrating, which has a great effect on tool life and cutting accuracy.

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims for utility model registration, so it is possible to prevent the vibration of the circular saw blade and prevent it from cutting and bending. It is something that never happens.

Note that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments by making appropriate changes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a cutting head of a circular saw cutting machine. FIG. 2 is a plan view of the vicinity of the circular saw blade with the device of the present invention attached, and the illustration of the cutting head is omitted. FIG. 3 is a sectional view taken along the line ■--■ in FIG. 2, and the position of the material to be cut is indicated by an imaginary line. Explanation of the symbols representing the main parts of the drawings 9...Circular saw blade, 11...Body vice, 13...
Upper vice jaw, 15...Lower vice jaw, 1
7... Steady rest bar, 29... Steady rest stand, 31... Horizontal holding plate, 33...
・Forward steady rest bar.

Claims (1)

[Scope of utility model registration request] A body vise 11 for clamping and fixing the workpiece 37 is provided in a position close to the circular saw blade 9 that cuts the workpiece 37, and the circular saw is attached to a movable vice jaw provided on the body vice 11. A first steady rest member whose end can freely come into contact is attached and provided on one side of the body of the blade 9, and a first steady rest member is provided on the other side of the body of the circular saw blade 9, facing the first steady rest member. Steady rest stand 2 supporting a second steady rest member whose end part can be freely abutted
A saw blade steady rest device for a circular saw blade, characterized in that the saw blade steady rest device is provided with a vertically adjustable position of the saw blade.