JPS6125489B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double-end cutting machine that simultaneously cuts both ends of a long material such as a bar or a tube with vertical or inclined cutting surfaces.

Conventionally, even though vertical cutting is relatively easy to cut both ends of a long piece of material, when the cutting surface is required to be inclined, it is necessary to cut the long piece of material on a workbench. Inclined at a predetermined angle,
It had to be maintained, requiring skill, labor, and a large work space. In addition, in this case, the cutting machine is placed on a rotary table and the rotary table is rotated to cut the desired sloped surface, but this requires a wider workbench and the equipment is larger, making it difficult to operate. This method is not only complicated, but also has the disadvantage that a stable cut surface cannot be obtained during cutting.

This invention has been made in view of the above points, and provides two cutting machines each with a cutting blade, the cutting blades being made to protrude a required amount above the work table and also being able to be tilted with respect to the cutting machine. This makes it possible to perform easy-to-operate and stable cutting, and by linking the two cutting machines, it is possible to operate both cutting machines with one cutting machine.
A detailed description will be given below with reference to the drawings.

The drawings both show the apparatus of the invention, in which two cutting machines A and B are mounted on two parallel slide shafts 3, 3' fixed to a bearing pedestal 2 on a frame 1, and the slides It is designed to be movable on axes 3 and 3'. Each cutting machine is formed into a box shape with two main body frames 4 and 5, four joint plates 6 connected to these frames, and a work table 7 on the top surface, and each has a motor and a cutting blade inside, as will be described later. be done.

In this case, a slide bearing 8 is fixed to the lower part of one cutting machine A, and is fixed on the slide shafts 3 and 3' with set bolts 9, and a bearing 10 with a slide bearing is fixed to the lower part of the other cutting machine B. and make it easy to move manually. That is, the adjustment table 12 is fixed by the set bolt 11 near the cutting position, the threaded part of the moving shaft 14 is rotated by operating the handle 13, and the cutting machine B is slightly moved through the screw seat 15 fixed to the main body connecting plate 6. After adjusting the cut dimensions to a predetermined position, it is fixed with a set bolt 16.

Therefore, when cutting, the cutting machines A and B are fixed depending on the length of the material D to be cut, and several roller supports C are installed between the cutting machines A and B at appropriate intervals. To be able to support the material D to be cut. As shown in FIG. 9, the roller receiver C is connected to the slide shaft 3,
3', only one side is fitted, and it is fixed with a set bolt 17, and the roller underframe 1
8 is adjusted to the height of the upper surface of the work tables 7 of the cutting machines A and B, and the rollers 19 are mounted so as to be perpendicular to the slide shafts 3 and 3'.

On the other hand, the rotary brackets 20 and 21 are attached to the pins 2 on the upper parts of the main body frames 4 and 5 of the box-shaped cutting machines A and B, and are approximately aligned with the upper surface of the work table 7.
2, the two guide shafts 23 and 24 are fixed to the rotating brackets 20 and 21, and the guide shaft 24
Both ends of the main body frames 4 and 5 are fitted into grooves 25 and 26 to be fixed. In this case, as shown in FIG. 10, an easily movable slide ball bearing 27 is passed through the guide shafts 23 and 24, a moving table 28 is fixed to the upper surface of the bearing 27, and a rotating shaft 29 is attached to this. do.

Further, a motor stand 30 is fixed to the lower surface of the bearing 27, a motor 31 is attached to this, and a V-pulley 3
2 and 33 with a V-belt 34. Rotating shaft 29
At the other end is a cutting blade 35 that rotates integrally with the rotating shaft 29.
are tightened and fixed with the clamping fittings 36, 37 and the nut 38.

This fixation of the cutting blade 35 is done so that the blade part of the cutting blade 35 is
(The third
(See Figure 1 and Figure 11).

The cutting blade 35 is moved by using an air cylinder fixed to the rotary bracket 21.The piston rod tip 40 of the first driving means 39 is fixed to a fixture 41 at one end of the moving table 28, and the cutting blade 35 is moved forward while pushing the air cylinder. Cut it by letting it move, and then move it back in a pulled state. This forward and backward movement can be adjusted by a limit switch 42 and a switch holding plate 43 attached to the guide shaft 24. When cutting the material D to be cut vertically, as shown in FIG.
45 is pulled, the rope 47 attached to the rod tip 46 passes through ring guides 48, 49, 50, and pulls up the rotary brackets 20, 21, making the work table 7 and the moving table 28 parallel, and aligning the main body frames 4, 5. Guide shaft 2 protruding from grooves 25 and 26
This is done by tightening and fixing the screws 51 at both ends of No.4.

Also, when cutting on an inclined surface, use the air cylinders 44, 4.
5 in the pressed state and rotate the brackets 20, 21.
is lowered, the movable table is tilted, and the cutting blade 35 is tilted to form a predetermined angle with respect to the work table 7. At this time, the rotating bracket uses the pin 22 at the top of the main body frames 4, 5 as a fulcrum, and the arc-shaped grooves 25, 2
6, both ends of the guide shaft 24 move. At this time, the pivot points (pins 22) of the rotating brackets 20 and 21 are approximately aligned with the upper surface of the work table 7, and the cutting blade 3 is
Since the blade portion of No. 5 is installed so as to be located on a straight line connecting the above-mentioned pivot points, the intersection position of the table surface and the cutting blade 35 will not shift even if the angle of the cutting blade 35 is changed, and will remain at the same position, that is, the fulcrum point. Naru pin 2
Intersect on the line connecting the centers of 2 (see Figure 11). Therefore, the width of the slit-shaped groove in which the cutting blade 35 moves can be made narrower, which increases the stability during cutting, and also makes it easier to cut workpieces of the same length with only the cutting angles at both ends differing. Obtainable. After adjusting the cutting angle, the screws at both ends of the guide shaft 24 are tightened and fixed. Air three-way sockets 54, 55 on the sides of the operation unit boxes 52, 53
It can be done at As shown in FIG. 3, the cutting blades 35 of the two cutting machines A and B can be made to face each other inward and be inclined to prevent the cutting chips from scattering.

Furthermore, two dovetail grooves 56 are drilled on both sides parallel to the cutting blade 35 on the upper work table 7 of the main body, and the backing plates 57 and 58 are fitted into these and fixed in appropriate positions with mounting bolts 59 and 60. do. Apply the material D to be cut to this, move the air cylinders 61 and 62 on the work table 7, and press the plate 6 at the tip of the rod.
3. Secure with 64. The backing plate 58 is the cutting blade 3
5 is slanted, so add a sloping surface on the inside. Also,
Scales 65 and 66 are provided on the upper surfaces of the backing plates 57 and 58 so that the amount of movement can be easily measured visually.

The operations of the cutting machines A and B are controlled in unit boxes 52 and 53 on the front of the cutting machines, respectively, and the switches 67 on the top are used to start, stop, and move the cutting blade forward and backward. It is also possible to link the above and perform the above operation using a switch on either side. or,
To clamp the material D to be cut and adjust the forward and backward speed of the cutting blade, operate cutting machines A and B individually, and when you want to operate either of cutting machines A or B, use cutting machine A.
It is also possible to operate only one side without interlocking them by using the changeover switch 68 on the front side.

Additionally, a rotating cutting blade 35 is mounted on the work table 7.
For this purpose, a safety cover 69 is installed and a transparent plastic window 70 is provided at the top of the front of the cover to enable observation of the working status during cutting, and also allows the front half to be
It is opened 180 degrees to make it easier to attach and detach the material D to be cut.

Similarly, the internal motor is covered with a cover 71 to prevent danger and to prevent chips from entering. Further, an auxiliary roller 72 is attached to one side cutting machine A or B.

As described above, according to the present invention, it is possible to simultaneously cut both ends vertically or at an inclined angle, the processing dimensions can be easily determined, safe and clean cut surfaces can be processed, and long objects can be continuously processed. It is possible to achieve the following effects.

[Brief explanation of the drawing]

Fig. 1 is a schematic overall plan view showing one embodiment of the present invention, Fig. 2 is a schematic overall front view, see the following figures for details, Fig. 3 is an overall front view, and Fig. 4 is a one-sided cutting machine. Figure 5 is an internal front view when the cutting blade is perpendicular to the work table, Figure 5 is an internal front view when the cutting blade is tilted at a 45° angle to the work table, and Figure 6 is a front view when the cutting blade is tilted at an angle of 45 degrees to the work table.
The figure is a plan view of one side of the cutting machine, Figure 7 is an internal plan view, Figure 8 is an internal side view, Figure 9 is a side view of the intermediate roller receiver, Figure 9 is a front view, and Figure 10 is a cutting blade. and a detailed view of the rotating shaft, and FIG. 11 shows a state diagram in which the inclination angle of the cutting blade is changed. 1...Frame, 3, 3'...Slide shaft, 6...Body joint plate, 8...Slide bearing, 10...Bearing with slide bearing, 12...Adjustment stand, 14...
Moving axis, 16... Set bolt, 18... Roller underframe, 20, 21... Rotating bracket, 23, 2
4... Guide shaft, 27... Bearing with slide ball bearing, 28... Moving table, 30... Motor stand, 32, 33... V pulley, 35... Cutting blade, 38... Upper nut, 40 ... Rod tip, 42 ... Limit switch, 44, 45 ...
Air cylinder, 47... Rope, 51... Screws at both ends, 54, 55... Air three-way screw, 57, 58
...Packing plate, 61, 62...Air cylinder, 6
5, 66...Scale, 68...Switch switch,
70...Cover window, 72...Auxiliary roller, A...Fixed cutting machine, B...Movable cutting machine, C...Roller holder,
D... Material to be cut.

Claims (1)

[Scope of Claims] 1. Two cutting machines that cut a material to be cut by horizontal movement of rotating circular saw cutting blades that protrude a desired amount above the top surface of a work table can adjust the mutual separation distance between the cutting blades. The cutting machine is mounted on a slide shaft so as to be movable in a direction perpendicular to a direction of movement, and the circular saw cutting blade is tiltable in a direction perpendicular to the direction of movement. The tilting and horizontal movement means includes two rotary brackets on both sides of the work table, one end of which is pivotally supported substantially in line with the top surface of the table, and two rotary brackets with both ends fixed to the two rotary brackets. A parallel guide shaft, a movable table movably attached along the guide shaft, and the movable table together with a driving means so that the blade portion is located on a straight line connecting each pivot point of the two rotating brackets. The circular saw cutting blade attached to the blade and any one of the two rotating brackets
and a first driving means installed between the moving table and the moving table to horizontally move the moving table;
a second driving means installed between each of the two rotary brackets and the machine frame constituting the work table for rotating the rotary bracket around its pivot point and tilting the circular saw cutting blade; At least one of the two guide shafts has both ends protruding outward from the rotating bracket and is inserted into an arcuate groove bored in the main body frame constituting the work table, and this insertion end A double-end cutting machine characterized in that the guide shaft is fixed to the main body frame by tightening a nut screwed into the part, and the circular saw cutting blade is tilted and fixed at an appropriate angle together with the rotating bracket.