JPS5969212A - Steel pipe cutting machine equipped with milling cutter revolving around cut pipe - Google Patents

Abstract

PURPOSE:To simplify a mechanism so as to reduce a cost, by synchronously rotating a plural number of milling cutters on their own axes by a single motor through a planetary gear mechanism while simultaneously performing straight cutting off and revolutionary cutting of the milling cutter around a cut pipe by each separately equipped motor. CONSTITUTION:If a worm 3 is rotated by a motor 34, a worm wheel 2 rotates, and a rotary sleeve 1 and a face plate 6 integrally formed with said wheel 2, are rotated, causing a cutter head 9 to perform revolutionary motion around a cut pipe P. While if a motor 8 is rotated, a ring gear 7 rotates to synchronously revolve four milling cutters 10 on their own axes via pinions 16 bevel gears 15, 14 spline shafts 13 bevel gears 12, 11, thus cutting the steel pipe. Further if a motor 33 is driven, a timing gear 22 is turned through a belt 23, and a screw shaft 20 is turned to move a shifter 18. Accordingly, a wedge 28 is pressed inward by a roller wedge 27, and the cutter head 9 is moved inward, thus feeding the cutter 10 to cut the pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steel pipe cutting machine in which a milling cutter rotates on its own axis and revolves around a pipe to be cut. More specifically, in a steel pipe cutting machine that rotates multiple cutters to perform parting cutting on the tube wall of the pipe to be cut, and also performs revolving cutting, the synchronous rotation of the multiple milling cutters is achieved by planetary gears. This is done simultaneously by the operation of a fixed motor via a mechanism. This is an attempt to reduce costs by simplifying a steel pipe cutting machine equipped with a revolving milling cutter.

The applicant previously filed a patent application for an invention entitled "Pipe cutting and beveling device by milling" (Japanese Patent Application Laid-Open No. 51-14
8890). This is shown in FIGS. 9 and 10, and operates as follows. In other words, 6 milling cutters ae...
from each cutter drive motor b through the tooth box and arrow A
Rotate at high speed in the direction shown in Figure 1. At the same time, six milling heads C and cutters a are sent in the direction of arrow B (Fig. 1) (toward the center of the pipe) by driving the drive motor of the cutting feed mechanism to penetrate the wall thickness of the pipe P. Cut until it comes out. Thereafter, the tube can be completely cut by rotating the rotary drum d by 1/3 rotation in the direction of arrow F (FIG. 1) by driving its drive motor e. At the same time, the pipe end is beveled to match the shape of the cutter. The pipe P is non-rotatably clamped by a clamping device (not shown).

In such a structure, 1) the rotary drum d is equipped with a motor, so the rotating body support frame must be highly rigid and sturdy, and 2) the rotary drum d is also equipped with a motor, so it must be used to drive the cutter's rotation. The power supply mechanism to the motors is quite complicated. 3) Since multiple milling cutters are driven to rotate by separate motors, the number of motors increases, and electrical synchronization means are required, making the control system complicated. There were issues such as...

The present invention was made to solve the above problems, and a face plate is integrally attached to one end of a rotating sleeve driven by a worm, and a ring gear driven by a motor can be rotated on one side of the face plate of the mouth. A plurality of cutter heads that can operate in the radial direction are provided on the other side of the face plate, and a milling cutter provided at the inner end of the cutter head is rotated in conjunction with a ring gear. That is.

Examples will be described below with reference to the drawings. Reference numeral 1 denotes a rotating sleeve, and a worm wheel 2 is provided on the circumferential surface of the rotating sleeve.

6 is a worm, which meshes with worm wheel 2. The rotating sleeve 1 is rotatably supported by a bearing 5 provided between the rotating sleeve 1 and the frame 4.

Reference numeral 6 denotes a face plate integrally provided at one end of the rotating sleeve 1. A ring gear 7 is rotatably supported on one side of this face plate. The ring gear 7 is driven only by a motor 8 (for rotating the saw blade) fixedly placed on the frame 4 via a pinion 8a.

A plurality of cutter heads 9 are mounted on the opposite side of the face plate 6 so as to be slidable in the radial direction. Each cutter head 9 has a milling cutter 10 attached to its inner end. The milling cutter 10 is connected to the pinion 8a from the motor 8.
It is rotated along the drive path of → ring gear 7 → vinyl 12th → bevel gear 11. A bevel gear 14 built into the spline shaft 13 is supported by the face plate 6.

Reference numeral 17 holds a clamp portion 19 at the rear end of the cylindrical member 24 with several rollers provided on the shifter 18. A threaded rod 20 is screwed into the shifter 18. A gear 21 is integrally attached to the other end of the threaded rod 20, and the gear 21 meshes with a timing gear 22. The timing gear 22 is rotated by a non-slip belt 26, transmits the rotation to the screw salvage 20, and can move the cylindrical member 24 in the axial direction. 25 is a bearing, and the frame 4'
is mounted on top. A roller wedge 27 is provided at the end of the cylindrical member 24 and engages with a wedge portion 28 provided on the cutter head 9. 29 is a cover tube. Note 6
0 is a compression spring interposed between the cutter head 9 and the face plate 6, and 61 is a slide receiver for the shifter 18. 32.52
are a key and a keyway provided between the rotating sleeve 1 and the cylindrical member 19.

With the above configuration, when the worm wheel 6 is rotated by the motor 34, the worm wheel 2 rotates, and the rotary sleeve 1 and face plate 6 that are integrated with the worm wheel 2 rotate, so that the cutter head 9 attached to the worm wheel 2 rotates. It performs a revolution movement with respect to the pipe P. The pipe P to be cut is non-rotatably clamped by a clamping device (not shown).

On the other hand, when the motor 8 is rotated, the ring gear 7 rotates, and the pinion 16 → bevel gears 15, 14 → spline shaft 13 → bevel wheel 1
2 and 11, the force center 10 rotates synchronously and cuts the steel pipe.

Note that when the motor rotor 6 is driven, the timing gear 22 is rotated through the heald 2 rotor, and the shifter 18 is moved by rotating the axle shaft 20. Then, the wedge portion 28 is pushed by the roller wedge 27 provided at the end of the cylindrical member. Then, the cutter head 9 can be moved radially inward against the compression spring 30, so that the cutter 10 is fed into the pipe to be cut.

As explained above, according to the present invention, a plurality of saw blades can be synchronized and rotated by a ring gear, and at the same time, a revolving movement of a cutter can be performed by rotating a rotary sleeve via a worm and a worm wheel. be able to. Therefore, compared to conventional cutting machines, (1) the support frame for the rotating body does not require as much rigidity.

■) Since the rotating body is not equipped with a motor, the power supply mechanism to the rotation drive motor can be simplified.

(2) No matter how many milling cutters there are, they can be driven by one motor, making synchronized operations easier.

It has the following advantages.

FIG. 7 shows another embodiment of the present invention, in which a cutter head support member 9a is inserted between the face plate 6 and the cutter head 9. The cutting feed of the cutter 10 is similarly performed by the roller wedge 27, but the partner that the roller engages with is the cutter head support member 9.
This is the wedge portion 28a of a. Also, if the outside diameter of the pipe to be cut differs in size, manually operate the screw 35 to cut the canter.
The position of the hand 9 relative to the cutter head support member 9a can be easily changed. Numeral 36 is a compression bolt, and 37 is a bevel gear support bracket which is fixed to the face plate 6 with bolts.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a steel pipe cutting machine according to the present invention. Figure 2 is the same plan view (H Yayanagi diagram in Figure 1). FIG. 3 is a side view taken along the arrow In-■ in FIG. FIG. 4 is a sectional view taken along the direction of the rv-■ arrow in FIG. 6. FIG. 5 is a sectional view taken in the direction of the ■ arrow in FIG. FIG. 6 is a view taken along the Vl arrow in FIG. FIG. 7 shows another embodiment of the present invention. FIG. 8 is a sectional view taken along the line 11--■ in FIG. 7. FIG. 9 is a front view of a conventional steel pipe cutting machine. FIG. 10 is a side view of the same. In the figure; 1 rotating sleeve 2 worm wheel 3 worm 4,4 frame 5 shaft
Receptacle 6 Surface Plate 7 Ring gear 8 Motor 9 (for autorotation) Cutter head 10 Milling cutter 9a Cutter head support member 11.12 Bevel gear 13 Spline shaft 14.15 Bevel gear 16 Pinion 17
Roller 1B Shifter 19 7 Ring part 20 Threaded rod 21 Gear
22 Timing gear 2 Non-slip belt 24 Cylindrical member 25 Bearing
27 Roller wedge 28.28 Wedge part 29 Cover tube 30 Compression spring
51 Slide receiver 62 Key Easy
Motor 34 Applicant Sumitomo Heavy Industries, Ltd. Sub-Agent Patent Attorney Isamu Ohashi Figure 3 Figure 4 Figure 51 Figure 6 Figure 8 66- Figure 9 Figure 10 Procedural Amendment (Voluntary) November 7, 1980 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1 Display of the case Relationship to the 1980 Patent Application No. 167580 Case Patent applicant 5l'tf 2-2 Otemachi, Chiyoda-ku, Tokyo No. 1 fz ”S (Name) (210) Sumitomo Heavy Industries Co., Ltd. 4th Director Address Aihara Building 8, 1-9-10 Nishi-Shinbashi, Minato-ku, Tokyo
Contents of the amendment Amendment matters (Japanese Patent Application No. 57-167580) 1. Submit the full text of the amended specification within the scope (no changes to the gist). 2. Drawings Figures 1, 2, 4, and 2. Figures 7 and 8 are corrected as shown in the attached sheet. 3. Correct the table in Figure 9 of the attached sheet. Applicant Sumitomo Heavy Industries Co., Ltd. Sub-Attorney and Patent Attorney Yuaki Ohashi Description 1 Title of the invention Steel pipe cutting machine equipped with a revolving milling cutter 2 Claims One end of a rotating sleeve driven by a worm A face plate is integrally attached to the face plate, a ring gear driven by a motor is rotatably attached to one side of the face plate, and a plurality of cutter heads that are operated simultaneously in the radial direction are provided on the other side of the face plate. A steel pipe cutting machine equipped with a revolution-type milling cutter, characterized in that an interlocking mechanism for transmitting the rotation of the ring gear to the milling cutter is provided inside. 3. Detailed Description of the Invention The present invention relates to a steel pipe cutting machine in which a milling cutter rotates on its own axis and revolves around a pipe to be cut. More specifically, in a steel pipe cutting machine that rotates multiple cutters to precisely cut the wall of the pipe to be cut, and then performs revolving cutting, the synchronous rotation of the multiple milling cutters is achieved by planetary gears. With a single motor stationary through the mechanism, the movement of the motor 0, the investigation angle 1, and the revolution angle 11 are each individually equipped.
It was designed to last as long as possible. This is a simple version of a steel pipe cutting machine equipped with a revolving type 1-long cutter; this is an attempt to reduce costs. The present applicant filed a patent application for an invention entitled ``Pipe cutting method 1 and beveling device'' (Japanese Patent Application Laid-open No. 51-1118890). This (Figure 9 ~ Negative) I
1. It works as usual. That is, three milling cutters a... are cut into each cutter, t g
From the p drive motor) to the gear box, arrow A (0th to 1st)
Method 1iil Rotate the IC at high speed. At the same time, move the cutter a to the three mee IJ pins,
By driving the two-movement motor, arrow B (Figure 9)
16J (toward the center of the pipe), and pierce the wall thickness of the pipe P (
Continue cutting until the After that, the rotary tram d is rotated by 1/3 turn in the direction of arrow F (Fig. 9) by driving its drive motor e (see Fig. 10) tb to completely cut the pipe. You can do what you do. Similarly, the bevel at the end of the tube is machined according to the shape and shape of the cutter. The pipe P is non-rotatably clamped by a clamping device (not shown). In this structure, 1) The rotating drum d is equipped with three motors for feeding multiple motors and three motors for driving the Meelink cutter, so the frame that supports the rotating drum d must be highly rigid and sturdy. things that must be done,
2) Also, since the rotary drum d is equipped with a motor, the power supply mechanism to the motor for driving the milling cutter to rotate and the motor for cutting feed becomes quite complicated; 3) Multiple milling cutters are rotated by separate motors. Since the motor is driven, the number of motors increases, furthermore, an electrical synchronization means is required, and the control system becomes complicated. The present invention has been made to solve the above-mentioned problems, and a face plate is integrally attached to one end of a rotating sleeve driven by a worm, and a ring gear driven by a motor is rotatably attached to one side of the face plate. A plurality of cutter heads capable of operating in the radial direction are provided on the other side of the face plate, and a Meelink cutter provided at the inner end of the cutter head is rotated in conjunction with the ring gear. That is. Examples will be described below with reference to the drawings. The first rotary sleeve has two worm wheels (provided on its circumferential surface. 3 is a worm, which engages with the worm wheel 2. The rotary sleeve 1 is rotated by a bearing 5 provided between it and the frame 4. 6 is a face plate physically provided on one end of the rotating sleeve 1. A ring gear 7 having two stages of teeth is rotatably supported on one side of this face plate. Link gear 7 is connected to frame 4.
It is driven only by a motor 8 (for rotating the saw blade) placed above it via a pinion 8a. A plurality of cutter heads 9 are mounted on the opposite side of the face plate 6 so as to be slidable in the radial direction. Each cutter head 9
A milling cutter 10 is attached to its inner end. The milling cutter 10 is connected from the motor 8 to the pinion 8a → link gear 7 → pinion 16 → bevel gear 15 → bevel gear 14 → spline shaft 13 → bevel gear 12 → bevel gear 11
It is rotated by the drive path of A bevel gear 14 built into the spline shaft 13 is supported by the face plate 6. A flange portion 19 at the rear end of the cylindrical member 24 is held between several rollers 17 provided on the shifter 18 . A threaded rod 20 is screwed into the shifter 18. A gear 21 is integrally attached to the other end of the threaded rod 20, and the gear 21 meshes with a timing gear 22. timing gear 22
The non-slip belt allows the cylindrical member 24 to be moved in the axial direction. A bearing 25 is mounted on the frame 4'. 27 is the cylindrical member 2
A roller wedge provided at the end of the cutter head 9 engages with a wedge portion 28 provided on the cutter head 9. 29 (more like a bar tube; 30 is a compression spring interposed between the cutter head 9 and the face plate 6; 311 is a sliding receiver for the shifter 18; 32, 32.! is a rotating shaft IJ-bubble); 1 and the cylindrical member 24. With the above configuration, when the worm 3 is rotated by the motor 34 (see Fig. 5), the worm wheel 2 rotates, and the worm wheel 2 is integrated with the worm wheel 2. As the rotary snorf 1 and face plate 6 rotate, the cutter head 9 attached thereto rotates to cut the pipe P.
The orbital motion is 1. The pipe P to be cut is non-rotatably clamped by a clamping device (not shown). On the other hand, when the motor 8 (see Fig. 1) is rotated, the ring gear 7 rotates, and the four Mee-Link cutters 10 synchronously rotate through the pinion 16 → bevel gears 15, 14 → spline shaft 13 → bevel gears 12 and 11, and the steel pipe Make the cut. Note that when the motor 33 (see Fig. 2) is driven, the heald 23
The shifter 18 is moved by turning the timing gear 22 through the gear Φ+l+20. Then, the roller wedge 27 provided at the end of the cylindrical member 24
push the wedge portion 28 radially inward; Then, the cutter head 9 can be moved radially inward against the compression spring 30, so that the cutter 10 is fed into the pipe to be cut. As explained above, according to the present invention, it is possible to synchronize and rotate a plurality of milling cutters using a ring gear, and at the same time, by rotating a rotary sleeve via a worm and a worm wheel, the orbital movement of the milling cutters can be controlled. You can make it happen. Therefore, compared to conventional cutting machines, the rigidity of the rotating body support frame is not required. II) Since the rotating body is not equipped with a motor, the power supply mechanism to the rotation drive motor and the cutting feed motor can be simplified. nl) No matter how many milling cutters there are, they can be driven by one motor, making synchronized operation easier. It has the following advantages. FIG. 7 shows another embodiment of the present invention, in which a cutter head support member 9a is inserted between the face plate 6 and the cutter spatula 19. The cutting feed of the milling cutter 10 is similarly performed by the roller wedge 27, but the roller engages with the wedge portion 28a of the cutter head support member 9a. Therefore, when the outer diameter of the pipe to be cut differs in size, manually operate the screw 35 to cut the cutter head support member 9a of the canter head 9.
The position can be easily changed. 3
6 is a compression spring, and 37 is a bevel gear support bracket, which is fixed to the face plate 6 with bolts. 4. Brief Description of the Drawings FIG. 1 is a longitudinal sectional view of a steel pipe cutting machine according to the present invention. Figure 2 is also a plan view (view from the ■ arrow in Figure 1). Figure 3 is the ■-m arrowhead side view 2I of Figure 1! A-22:' ,:y::Q2
--1, 2 F de 2° Fig. 5 is a sectional view taken along the V arrow in Fig. 1. Figure 6 is a view in the direction of the ■ arrow in Figure 1. FIG. 7 shows another embodiment of the present invention. FIG. 8 is a sectional view taken along the line ■-■ in FIG. 7. FIG. 9 is a front view of a conventional steel pipe cutting machine. FIG. 10 is a side view of the same. In the figure: 1 Rotating sleeve 2 Worm wheel 3 Worm 4,4' Frame 5 Bearing
6 face plate 7 ring gear 8 (for rotation) motor 9 cutter head IO milling cutter 98 cutter head support member 11.12 bevel gear 13 spline shaft],
4.15' Bevel gear 16 Pinion 17
Roller 18 Shifter 19 Flange 20 Screw 21 Gear 22
Timing gear 23 Non-slip belt 24 Cylindrical member 25 Bearing 27 Roller wedge 28.28' Wedge portion 29 Cover tube 30
Compression spring 31 Slide receiver 32 Key
33 Motor 34 Screw w#8 Fig. 71- Fig. 9 $10 Fig.

Claims (1)

[Claims] A face plate is integrally attached to one end of a rotating sleeve driven by a worm, a ring gear driven by the motor is rotatably attached to one side of the face plate, and a plurality of ring gears that can be operated in the radial direction are attached to the other side of the face plate. 1. A steel pipe cutting machine equipped with a revolution-type milling cutter, characterized in that a cutter head is provided, and an interlocking mechanism for transmitting the rotation of the ring gear to the milling cutter is provided inside the cutter head.