JPS60127072A - Gas cutting machine for circular cutting - Google Patents

Abstract

PURPOSE:To provide a titled cutting machine which permits easy positioning and performs exact small circular cutting with a simple construction by connecting the output shaft of a vertical motor and a cylindrical turning shaft via a spur gear, turning a torch and inserting freely vertically slidably a center bar to the turning shaft. CONSTITUTION:A motor 2 is attached to the upper part at the top end of the arm 16 of a base plate 1 which is made fixably to a material to be cut by a magnet in such a way that the output shaft 3 thereof faces a vertical direction. The shaft 3 and a cylindrical turning shaft 4 opened at the top and bottom are connected via spur gears 5, 5 and are rotated horizontally. A torch 8 is attached to said turning shaft 4 via a rotary holder 33, an arm holder 6, a horizontal arm 7 a torch fitting 35, etc. The bottom end of a center bar 9 inserted freely vertically slidably into the shaft 4 is aligned with the circular center to be cut to position the axial center of the shaft 4. The length of the above-mentioned horizontal arm 7 is adjusted by the cooperation of a rack 31 and a handle 32 with a pinion in this state to position the torch 8 and thereafter the torch 8 is turned by the driving of the motor 2 and circular cutting is accomplished by the burner from a nozzle 42.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a scrap cutting machine for cutting small circles.

[Background technology]

BACKGROUND OF THE INVENTION A scrap cutting machine for small-scale cutting in which a blowpipe is manually operated is conventionally known. However, manual scrap cutting machines had problems with workability, and
Japanese Patent No. 6221 provides a device in which a blowpipe is operated by the driving force of a motor. This special public service in 1977
-26221 and No. 3, as shown in Figure 1, a handle (+11) is protruded from the upper part of the base +1+, a rotation axis (12) is provided at the tip of the handle (the rotation axis (12) is provided, 12) Attach the arm holder (6) to the lower end and attach the arm holder J-161.
Attach the horizontal arm (7) so that it can slide in the horizontal direction, attach the blowpipe (8) to the tip of the horizontal arm (7), and further extend the foot θ3) in an arched manner from one end of the base (1). Protruding foot 0
3) is formed by pivotally supporting the base of a center support (15) that is horizontally rotated by operating a lever (14). And this thing K has a lever (1
4), rotate the center rod (15) to center the needle at the tip of the center rod 05) precisely to the center of rotation of the horizontal arm (7), that is, the rotation axis θ2), and then Center the base (1) on the material to be cut by aligning the needle at the tip of the center tip (15) with the center of the cutting line of #i material, then use the Cera I-04) Dedication (16
) is returned to its original position, the horizontal arm (7) is horizontally rotated via the rotation shaft (+21) by the cylinder that drives the C-cutter (2), and a small This machine cuts a circle.In this way, this machine cuts the electricity 11.
The i1JK automatically cuts small circles, but this method has the following problems. In other words, in the above-mentioned Japanese Patent Publication No. 53-26221, the motor (2) is installed horizontally so that the output shaft faces horizontally, and the output shaft of the motor (2) and the rotating shaft (12) ,!
- As an example of the orthogonal relationship, it becomes necessary to use special gears such as bevel gears to transmit the power from the output shaft of the heptad (2) to the rotating shaft (12). ) to smoothly transmit the output from the rotation + IJ axis (+2)K.
- If the positional relationship between the shaft (2) and the rotating shaft (12) is required to be precise, there is a problem that assembly becomes difficult, and the one disclosed in Japanese Patent Publication No. 53-26221 requires cutting. As mentioned above, first rotate the center bar 06) by operating the lever (14) to align the needle at the tip of the center bar (15) with the axis of the rotation axis θ2). It is necessary to perform centering, and if this centering operation is not performed accurately, it may not be possible to cut both sides at the correct position, so this operation requires careful attention and is very troublesome. There is also the problem of manipulation.

[Purpose of the invention]

The present invention has been made in view of the above points, and includes:
The power transmission mechanism between the output shaft and the rotating shaft can be easily assembled using spur gears, and the gas cutting machine for double-sided cutting requires no centering operations for the center rod. The purpose is to provide

[Disclosure of the invention]

However, the double-cutting scrap cutting machine according to the present invention has a base (1
) The motor (2) is mounted on the top of the base (1) so that its output shaft (3) faces vertically, and the cylindrical rotation shaft (4) with an open top and bottom is horizontally rotatable. installed on,
The output shaft (3) and the rotation shaft (4) of the output shaft (2) are supported by a spur gear and the rotation shaft (4) is attached. The rotation shaft (4) is formed into a vertically long cylindrical shape with a hole in the center that is open at the top and bottom. 0-tally bracket 0η
Bear attached to the upper base of 9. ．． The motor mounting base □□□, which also serves as the A-ya box, is attached by pressing down 1), and the T-Yu (2) is attached to the motor mounting base.
2) The upper part of Ql is covered by
:, The e-mount (2) is installed so that its output shaft (3) faces vertically downward, and there is a t-mount mounting base at the top of the output shaft (3) and rotation shaft (4). Spur gear (
5) Attach (5) and connect the output shaft (3) and rotating wheel (4) with the spur gear +5) [5). 4)
is Natsuto. The center rod (9) has a sharp lower end and is formed into a columnar shape that is vertically long.
Push the rotating shaft (4) K through so that the axis of the rotating td + shaft (4) and the axis of the center support (9) match up inside υ, and the upper part of the center support (9) is -It protrudes above the through hole of the evening mounting base. Dedicated to this center (9)
The center shaft (9) is moved by vertical sliding friction force inside the rotating shaft (4).
) is designed so that it can be held at any position above or below. In addition, the upper part of the arm holder (6) is fitted onto the lower end of the rotation shaft (4), and by tightening the stop handle @ (6), the arm holder (6) is attached to the rotation shaft (4). This is so that it can be fixed.

A horizontal arm (7) is inserted and attached to the lower horizontal cylinder part (c) of the arm halter (6) so that it can slide freely in the horizontal direction. It is an S ring. Horizontal arm (7
) is provided with a scale (29) in the longitudinal direction, a pair of stopper rings /) (a)) (30) are provided, and a rack (31) is provided in the longitudinal direction on the lower surface of the horizontal arm (7). 1 of the rack by turning the handle with hinges.
) The movement of the horizontal arm (7) can be adjusted by meshing the pinion with the horizontal arm (7). horizontal arm (
7) Ijifj Kno-Tally Holter bribery)
is installed, D-tally holder 〇 (41K blowpipe fitting G) is installed with bearing (3 [1) and collar 071 so that it can be rotated horizontally. (38) is bearing holder, (39) is washer, i4c .

It's d and j. And the blowpipe is placed at the bottom of the pipe.
If(8) is attached by thumbscrew hx).

021 is Tinder, and 0-ko is Tinder Nat. On the other hand, the receiving piece (
The base end of each leg (45) bent in an inverted shape is attached with a bolt so that it can rotate horizontally, and the adjuster foot (46) is attached with a screw to the lower end of the pair of legs U. . ←
7) is a lock nut. ! (48) is pulp;
It is connected to the blowpipe (8) via the hose (49). 1150) is a distributor that distributes to a plurality of valves 5 + 4 (to), (51 ton handle, (52) ke total valve,
My older sister is Spindle, and (54) is Hashidor. Furthermore, a magnet (55) such as an electromagnet is attached to the lower part of the base (1). (561 is a heat shield plate, expansion η is a cover for base +++,
The connection is an electric operation panel, and (59) is an electric wire.

However, when cutting a material such as a steel plate in a circle, the gas cutting machine for cutting the ellipse formed as described above is busy.
First, turn off the magnet garden, press down on the center button (9),
Place the base f+) with the lower end of the center support (9) aligned with the center between the punch holes and the cut lines made in the material to be cut.
Place the magnet (5) on the material to be cut and set the magnet (5) on the material to be cut.

The center support (9) is then pulled up so as not to interfere with the rotation of the horizontal arm (7). Next, adjust the horizontal movement of the horizontal arm (7) by operating the handle M, and set the protrusion length of the horizontal arm (7) from the arm bolter (6) using the scale (29+) at the radius of the circle to be cut. .

After that, loosen the stop handle and allow the horizontal arm (7) to rotate freely horizontally, and adjust the circumference of the adjuster foot of the leg so that the height of the mouth of the blowpipe (8) is constant at the circumference. Use this to adjust the height of each leg. Fix the adjuster foot circumference with the lock nut 0η. After preparing for work in this way, the blowpipe (8) is ignited, and the rotary shaft (4) is rotated by the seventh gear (2) via the spur gear fil+51. By rotating the horizontal arm (7), a blowpipe (8) attached to the tip of the horizontal arm (7) is used to automatically cut a circle with a predetermined diameter on the material to be cut. Here, the blowpipe (8) is rotatably attached to the D-Tally Holter G+41 at the tip of the horizontal arm (7) with a soft tube Jrx fitting 1361, so the blowpipe (8) can be rotated by the horizontal arm (7). When moving around the circumference by motion, the button rotates once relative to the blowpipe +81 Fi Milotary Volta 04), which prevents twisting of the gas hose 01)).

〔Effect of the invention〕

As described above, in the present invention, since the Tanabata is mounted so that the output shaft faces in the vertical direction, the output shaft and rotation axis of the Tanabata can be set in a parallel positional relationship. The output shaft and rotation shaft can be connected using spur gears, and the positional relationship between the Tanabata output shaft and rotation shaft is required to be accurate, as is the case when using bevel gears. It is easy to assemble without any problems, and since the center rod is inserted into the rotating shaft formed in a cylindrical shape with upper and lower openings and is attached so that it can slide up and down, the axis of the rotating shaft and the center The center rod is installed with its axis aligned with the axis of the rod, and the centering operation is performed to align the center of the center rod with the center of the rotation axis, which is the center of the circumference around which the blowpipe is moved. This is unnecessary and makes the work of cutting the circle easier.

[Brief explanation of drawings]

Figures 1(a) and 1(b) are front and plan views of the conventional example;
The figures are perspective views of one embodiment of the present invention, FIGS. 3(a) and 3(b).
4 is a partially cutaway front view and a plan view of the same as above, and FIG. 4 is a perspective view of a part of the same. (1) is the base, (2) is Tanabata, (3) is the output shaft, (4
)I''i rotation axis, (5) is a spur gear, (6) is an arm halter, (7) is a horizontal arm, (8) is a snowstorm, and (9) is a center shaft. Agent Patent attorney Ishi 1 ) long seven

Claims (1)

[Claims] (1) Attach the Tanabata to the top of the base so that its output shaft faces vertically, and attach the cylindrical rotating shaft with an open top and bottom to the top of the base so that it can rotate freely horizontally. The output shaft and the rotating shaft are connected via a spur gear, an arm holder is attached to the lower part of the rotating shaft, a horizontal arm is attached to the arm holder so that it can be rotated horizontally, and a blowpipe is attached to the tip of the horizontal arm. 25-slice cutting 47!