JPS58132413A - Cutter for pipe of special shape - Google Patents

Abstract

PURPOSE:To cut a metallic pipe, the section of which is shaped like an ellipse, oval or the like other than a circle (tentatively called a pipe of special shape), almost without producing powdered metal by utilizing a revolving rotary cutter. CONSTITUTION:A cutting machine A for a pipe of special shape is composed of parallel outside boards 1, 1, rotary side boards 2, 2 arranged between the above outside boards, and a cutting mechanism 3 installed on the above side boards. The cutting mechanism 3 is driven in a rotary motion through driving of a motor 27. The cutting machine A is fitted on a pipe P of special shape by loosening a bolt 9, while the outside boards 1, 1 are fixed so as to conform to a cutting line of the pipe P by clamping the bolt 9b, and the pipe P is cut by means of the rotary cutter 22.

Description

[Detailed description of the invention]

The present invention relates to a suitable irregular-shaped tube cutting machine for use in cutting metal tubes (tentatively referred to as irregular-shaped tubes, T4). Conventionally, a saw-shaped tool has been mainly used to cut the irregularly shaped pipes as described above. However, when using a viscous tool, metal powder is generated when cutting, and this metal powder is scattered inside the pipe.
Ru. For this reason, in the past, it was necessary to clean the inside of the pipe after cutting, and depending on the pipe diameter and shape, such work was difficult, leading to the problem of poor work efficiency. . The present invention has been made in view of the above circumstances (1), and an object of the present invention is to provide an irregularly shaped pipe cutting machine that hardly generates metal powder during cutting work and is capable of achieving the same workability. Tru is also σJ. Embodiments of the present invention will be described below with reference to the drawings. FIGS. 7 to S are diagrams showing an embodiment of a deformed pipe cutting machine according to the present invention. First of all, what about Sei Sakaki? To explain, the irregularly shaped pipe cutting fRAA shown in the embodiment has an outer plate 1.1 arranged in parallel at a predetermined distance apart as shown in FIGS. 1 and 2, and n et U] The rotating side plate 2.2 disposed between the outer plates 1.1ro, the cutting S structure 8 provided on the rotating side plate 2.2, and the rotating side plates 2, 2 to the outer plates l, l. The outer plate 1.1 has a 1 m straight line (for example, 1-139 Divide along the n
@11 First side plate 1a, lb and third and third side plate 1
c, ld.
b, lc, and ld are plates 1i5a, 5b, 5C, and 6duJ extending to the left in FIG. Also,
The first (1) @ plate 1a and the third side plate IC, and the first side plate 1b and the 41st LI/Ja plate 1d, which are opposed to each other, are connected at the holding parts of the respective plates M5a and 6C and 5b and 5d. ? a,
It is connected and fixed by 7b. In addition, on each of the side plates la, Lbs lc, and ld, 5
a, 5b, 6C, 5d and opposite side niha, +n each fixing part 8
a, 8b, 8C, and 8d are provided. To fix these, 8a, 8b, 8c, 8iff are arranged on the same plane, respectively. I heard that

[
For fixing T6 to each other, U'' is also U), and in this case fixing holes 8a and 8b and fixing -8c,! =8d are removably connected by ports 9a and 9b, respectively. Under the above (1)* composition, the outer plate 1.1 has the first and third
The rotation shaft 6 is separated into the side plates 1a, 1c of the

[1m in the center! 1+, and can be integrally connected by screwing bolts 9a, 9b, and T. Further, the center bIN: of the outer plate 1.1 has n holes 10a and lOb for inserting the irregularly shaped tube to be processed. The holes 10a, 1ObU] are shaped so as to approximately match the cross-sectional outline of the target irregularly shaped pipe, and are formed in an elliptical shape in the case of this (/l).Furthermore, the outer plate 1.1 Inner hole 10a, 1Qb (1) Peripheral edge b&l: As shown in FIG. 3, guide member 11
．． 11 is fixed. Each guide member 11.11 corresponds to each outer plate 1.1 similarly to the outer plate 1.1 described above. It is divided into parts along the 1 and 2 parts, with a 1 oa hole in the middle. Holes 12a and 12b are formed to have a shape T that matches that of hole 10b, and the outer shape of the peripheral hole is circular. In addition, each guiding material 11 e l l (/J on the inside,
Shape corresponding to the cross-sectional external shape of the irregularly shaped pipe T to be processed (in this case, an ellipse with the same length for the straight iah) Q) The guide grooves 18a and 18b are shaped so as to surround the holes iga+12bt- . These guide grooves 18a,
18b is a part (/l) into which a guide roller for cutting 4@i 8, which will be described later, is fitted and a transfer path for the guide roller is determined. Installed rotating side plate 2
．． 2 are arranged 27" so as to surround the outer periphery of the guide members 11 and 11, respectively. The stiff rotating side plates 2, 2
are shaped so that their inner edges are circular, and are divided into squares along a straight line 4602 passing through their centers. FIG. 3 shows a state in which the plane that divides the outer plate 1 and the plane that divides the rotating side plate 2 are aligned. The rotating side plates 2, 2 are rotatable as a straight line passing through the centers of the holes 10a and iob of the outer plate. In this case, each rotating side plate 2.2 has circular grooves 14a, 1 on the surface facing the outer plates 1, 1, as shown in FIGS.
4b forms a circular groove 14 as
l 4 bls - each k "outer'tk l , l U
The roller 16, 15°° protruding from inside I is fitted into the roller 16, 15°°. Therefore, the rotary side &2 #2 is in the circular groove 14
a. 14b and rollers 15, 15, . . . so that it is rotatably supported by the outer plate 1.1. In addition, a pair of rotating side plates 2, 2 are fixed at opposing positions with the center point of the U in between, respectively, and the connecting plates 16° 16...
They are connected to each other by. These connecting plates 16.
16... are also capable of two minutes like the rotating side plates 2, 2. Based on the above si+ configuration, the plane that divides the rotating side plates 2, 2, 11L, etc. is aligned with the plane that divides the outer plate 1.1 (T-shape shown in Figure 3). If), the outer plate 1.1 is separated as it rotates about the rotation axis 6f of the outer plate 1.1. Next, (b) the cutter 41 installed on the side plates 2, 2;
To explain the 4111 configuration of 1B, there is a cutter arm 20 movably supported on the rotating side plate 2.2, and a pair of UJ cutter plates supported on the same rotation shaft as this cutter arm 20. 21a, Zlb and the tip of the cutter arm 20*
The rotary cutter 22 provided in a and the cutter side plate Zl
a, a guide roller 2aa provided in the tip hole of 21b,
28b and a cutter feeding mechanism 24. The cutter arm 20 has a circular groove 14 on the rotating side [2,g].
The cutter arm 2 is rotatably attached to the middle part of a rotating shaft 25 whose both ends are fixed near a and 14b.
A rotary cutter 22 is rotatably attached to the inwardly extending end of the cutter 0. Further, the cutter side plates 21a and 21b are arranged so as to sandwich the cutter arm 20 and face each other, and the rotation shaft 85
It is rotatably supported by. N guide rollers 28a are provided in the inwardly extending tip holes of the cutter side plates zta and z1b, respectively. The guide rollers 28a and 28b are fitted into the guide grooves 18a and 18b provided on the inner surface of the outer plate 1.1, respectively. In addition, the cutter arm 20 and cutter side plates 21a, 2
A cutter feeding mechanism 24 is provided at each outwardly extending end of 1b. In other words, the above-mentioned pair of counter sides &21a. 21b are connected to each other by a connecting member 26. A stator 28 of a motor 27 is fixed to this connecting member 26. Furthermore, the connecting lim material 26 has a hollow 80 on the same axis as the rotating shaft 29 of the motor 27.
are fitted. [U] The nut 80 has a screw member 8
1 is screwed on. The screw material a1 is the motor 27
A gear 82 is a gear 82 which is located on the side aT, and is meshed with a spline 8B fixed to the rotating shaft 26. Further, the tip hole of the screw member 81 is adapted to come into contact with the side surface of the cutter arm zO. In the above aS Kensei, the threaded material 81 is the spline 8
8, forward and reverse rotations of the motor 27σJ are transmitted, thereby moving the motor forward and backward in the direction of the rotational axis. In the cutting mechanism 8 constructed as described above, the cutter side plate 21a and Blb are located in the guide groove 18a. 18bci person 2n 7z guide roller BB”z 28
b and cutter side plate BlaeBl.
b and the cutter arm 20 (/J) 1 relative angle is the motor 2
◎In this case, by advancing the screw member 81f toward the cutter arm 80, the cutter arm zO moves i! ,? The rotary cutter 2B is rotated counterclockwise at flV, and the rotary cutter 2B is pushed inward. Next, the configuration of the drive mechanism 4 for rotating the rotating side plates 2, 2t and the outer plate 1.1.

[Explanation] In this embodiment, the drive mechanism 4 includes rotating side plates Z, g
&: Comprising a fixed rotation motor 40, a drive gear 41 driven by the motor 40, and a gear 42 formed on the outer periphery of the guide member 11.11 fixed to the outer plate 1.1. It's #Naruki. The above rotation motor 40
The stator 4B of is fixed to a housing block 44 which is fixed during rotation t&2.2. Further, a worm gear 46 is provided in the tip hole of the rotating shaft 46 of the motor 40 . This worm gear 46 is engaged with a gear 47 coaxially coupled to the drive gear 41. The driving gear 4 interlocks with this gear 47.
1 is engaged with the gear 42 of the guide sawn material 11. Based on the above II, the drive mechanism number transmits the power of the rotation motor 40 to the drive gear 41 via the worm gear 46, and the drive gear 41 transmits the power of the rotation motor 40 to the guide member 11.
By meshing with the gear 42 of 11 and rotating T, the rotating side plate 2
, 2rt rotation T relative to the outer plate 1.1. In addition, power is supplied to the motor z7 and (b) diversion motor 40 provided on the rotating side plates 2 and B that rotate T with respect to the outer plate 1.1, for example, between the outer plate 1.1 and the rotating side plates g and z. This is accomplished by a slip ring (not shown) provided between the Next, the method for using the above-mentioned irregularly shaped pipe cutting machine A will be explained. First, in order to attach the irregular-shaped pipe to be processed by the irregular-shaped pipe cutting machine Art, the outer plate 1. Bolts 9a and 9br that connect T
Loosen t, open the outer plate 1.1rt around the rotation axis 6,
The part of the irregularly shaped pipe P that should be cut T is inserted from the fixing parts 8a to 8d side. ζσ] The state is shown in Figure 3.T0 and the tip of the rotary cutter 2o

[Close it to the outer plate 1.1 in a state that matches the cutting line of the irregularly shaped pipe P) Tighten and install 9a and 9bit. In addition, if the cut point of the irregularly shaped pipe P is close to the end thereof, cut the irregularly shaped pipe Pt with the end thereof loosened to the minimum necessary. At-Move to the specified location, Pol) 9M. It can also be installed by tightening 9bi. Next, the motor 27 and rotation motor 4 of the cutting machine JIB
Perform the cutting operation by rotating the machine 07 times. At this time, as the rotating side plates B and B rotate around the irregularly shaped tube P, the tip of the rotating cutter 22 is inserted into the guide grooves 28a and 28b.
Rolling T along the cutting line following the outer circumferential surface σ of the irregularly shaped pipe P
Ru. Simultaneously with the above rotation, the rotary cutter 22 advances as the motor 27 rotates, and the T6 threaded material 81 gradually moves inward of the irregularly shaped pipe P. Cut in gradually. The amount of movement of the rotary cutter z2 is set in advance to, for example, /I11 per rotation of the rotary side plates 2, 2. After cutting is completed over the entire circumference, each motor g7, 4
Stop 0. At this time, the stopping position of the rotating side plates 2, 2 is @
It is desirable that the T state be as shown in FIG. 3. Next, the cutting machine A is removed from the irregularly shaped pipe P to complete the work. According to the above-mentioned irregular-shaped pipe cutting machine A, since the rotary cutter 22 that rolls along the outer peripheral surface of the irregular-shaped pipe P performs T9J cutting, almost no metal powder is generated during the cutting operation.
In addition, in the above embodiment, the outer plate 1.1 and the rotating side plates 2, 2 of the irregularly shaped pipe cutting mechanism are separable, and these can be rotated around the rotation axis 6, so that long irregularly shaped pipes can be cut. [When cutting T or passing the cutting machine A on both sides of the part to be cut [Even when there are obstructing equipment etc. attached, the cutting machine A can be easily attached to the desired cutting point and cut. can. In the above embodiment, the rotating side plate 2. As the drive mechanism number for B1 rotation drive, motor 4° is connected to the rotating side plate z.
, 2 We have shown an example in which the motor is fixed to @, but 1 is limited to this example. The motor is fixed to the outer plates l and λ, and a gear [formed structure] may also be used along the inner or outer circumferential edge of the rotating side plate 21g. can. As explained above, the uninvented irregular-shaped pipe cutting machine is
A rotating side plate is provided inside the facing outer plates, a cutter arm and a canter side plate having the same rotation axis are attached to the rotating side plate, and a rotating cutter is provided at the inner end of the cutter arm. A guide roller 7Ir is provided on the inner side of the cutter side plate, and this guide roller is fitted into a guide groove provided on the outer plate and having a shape corresponding to the cross-sectional outline of the irregularly shaped pipe to be processed, and is connected to the cutter arm. The rotary cutter is rotated inward while regulating the relative angle with the cutter side plate, and as the rotary cutter rolls along the outer periphery of the irregularly shaped pipe to be processed, the circumferential wall of the irregularly shaped pipe is rotated inwardly. Because of this design, the rotating cutter can cut smoothly while the irregularly shaped pipe is securely held by the outer plate.Also, since the rotating cutter cuts by pushing through the pipe wall, it is easy to cut. This has the advantage that almost no metal powder is generated. In addition, this has the advantage that it is possible to improve the work efficiency σ in cleaning the inside of the pipe after cutting.

[Brief explanation of the drawing]

Figures 1 to 3 all show an embodiment of the invention, in which Figure 1 is a plan view, Figure 2 is a front view, and Figure 3 is a view of the trajectory of the @- figure. The sectional view and reference figure are I in Figure 3.
A cross-sectional view taken along the line V-0-4, No. S, and a state of being divided into two. A: Irregular tube cutting machine, l: Outer plate, 2
...Rotating side plate, death...Cut AI monument, 4.
... Drive mechanism, 6 ... Rotation shaft, g a
, 9 b =---&ruto, 1oa, iob...
... Hole, ll... Guide member, 12a, 12b
...hole, l 8 a, l a b・-・-
, guide grooves, 14a, 14b...circular grooves, 15
... Yu roller, 20 ... Cutter arm%
ela, 21b...Cutter side plate, La2...
...Rotating cutter, 28a, ZBb...Guide roller, 24...Cutter feeding mechanism, 26.
...Rotation axis of cutter arm and cutter side plate, 80
...Nut, 81 ...Screw member, 82
...Gear, 88...Spline, 40
・・・・・・Rotation motor, 41... River/driving gear,
42...Gear on the guide member side. Dispatch Tokyo Seismki Co., Ltd.

Claims (1)

[Claims] Arranged facing each other at a predetermined distance 2! n1 An outer plate in which a hole is drilled in the central part, which approximately matches the cross-sectional outline of the irregularly shaped tube to be processed, and through which the irregularly shaped tube can be inserted, and between these outer plates, the same outer plate A rotating side plate is rotatably supported around the center axis of the hole, and a rotating side plate is attached to the rotating side plate and rolls along the outer circumferential surface of the deformed tube to be processed.
A cutting mechanism equipped with a rotating cutter, and a driving aim for rotationally driving the rotating side plate.