JP4354063B2 - Pipe processing machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a pipe processing machine for cutting a pipe made of various materials or processing and forming a groove on a cut surface, and in particular, a cutting mechanism that does not generate an uncut portion of the pipe when cutting the pipe, The present invention relates to a pipe processing machine in which when the cutting blade is combined with a cutting blade and a grooved blade, the blade is not replaced when the groove is formed after cutting.
[0002]
[Prior art]
Conventionally, various pipe cutting machines or pipe groove processing machines have been developed (Japanese Patent Publication No. 53-36914).
[0003]
[Problems to be solved by the invention]
The pipe cutting machine (pipe cutting device) described in the above Japanese Patent Publication No. 53-36914 is composed of a stationary workpiece chuck and a bearing housing aligned in the axial direction with the chuck. The guide ring is concentrically mounted inside the bearing housing, and the cutting tool support is eccentrically provided inside the guide ring, and the cutting tool support includes a disc-shaped cutting blade. Supports the drive motor. The cutting tool support is supported between annular disks arranged so as to sandwich the guide ring, and the cutting tool support is located inside the guide ring, at a rest position from the workpiece, It is configured so as to be able to rotate between the cutting positions in contact with each other, and the pipe can be cut by the cutting blade by causing the cutting tool support to go around the workpiece together with the guide ring.
However, the pipe cutting machine has a configuration in which the cutting tool support and the guide ring are sandwiched between the annular disks. Therefore, when replacing the cutting tool or the drive motor, it is necessary to remove the annular disk. In addition, there is a problem that the cutting tool support needs to be eccentric with respect to the guide ring, the support structure becomes complicated, and cost reduction is difficult.
Therefore, the present invention reduces the size of the motor, simplifies the main body structure, facilitates the operation, and further, does not require the cutting blade to be replaced with the cutting blade and cuts the pipe or forms a groove on the pipe. An object of the present invention is to solve the above-mentioned problems by providing a pipe processing machine capable of performing both of these operations.
[0004]
In the present invention, a drive motor having a cutting blade is attached to a rotating body capable of rotating around a pipe via a link mechanism so as to be able to contact and separate toward the rotation center of the rotating body. The link mechanism cuts the cutting blade into the pipe. Therefore, it is possible to reliably cut the pipe by providing a cutting mechanism for adjusting the cutting amount and a cutting amount adjusting mechanism for adjusting the cutting amount of the cutting blade. Further, since the drive motor is supported by the link mechanism, the drive motor can be easily attached and detached, and the cutting blade can be easily replaced. Moreover, by providing the cutting blade and the grooved tool integrally on the rotating shaft of the drive motor, cutting and groove work can be performed without exchanging the cutting blade.
[0005]
For this reason, the technical solution means adopted by the present invention is:
A rotating body that is rotatably attached to the vice body and that can penetrate a pipe as a member to be cut is provided, and the rotating body has a cutting blade that can contact and separate toward the rotation center of the rotating body via a link mechanism. A pipe processing machine to which a drive motor is attached , wherein the link mechanism operates the link mechanism to move the drive motor having the cutting blade toward the center of the rotating body, and a cut amount of the cut mechanism And a lock means for locking the cut amount adjusting mechanism. The link mechanism is swingably attached to the rotating body, and swings on the first joint. A second joint that is freely attached; a rack holder that is swingably attached to the second joint; Constituted by a rack meshing with a pinion constituting the interrupt mechanism, a pipe processing machine, characterized by comprising attaching a drive motor having a cutting blade pivot point of the second joint and the rack holder.
The incision mechanism includes a shaft support member attached to the rotating body, a pinion rotatably provided on the shaft support member and meshing with the rack, and a notch handle for rotating the pinion, The rack is moved relative to the rotating body by operating the cutting handle and rotating the pinion so that the drive motor having the cutting blade can be moved toward and away from the rotating body center by the movement of the rack. It is a pipe processing machine.
The incision amount adjusting mechanism includes an adjuster main body movably provided on the rack, a pinion rotatably provided on the adjuster main body and meshing with the rack, and a incision amount adjustment handle for rotating the pinion. The pinion is rotated by operating the cut amount adjusting handle, and the adjuster body moves on the rack by the rotation of the pinion so that the distance from the shaft support member of the cut mechanism can be adjusted. This is a pipe processing machine characterized by the above.
The shaft support member is provided with a lock unit that fixes the shaft support member and the cut amount adjusting mechanism.
The lock means is a pipe processing machine configured to be movable in a locked state by a lock member pressed by a spring provided in the shaft support member.
Further, the lock means is a pipe processing machine characterized in that the unlocked state can be maintained by engaging with a swing stopper provided swingably on the vice body .
The swing stopper is a pipe processing machine that allows a rotating body to rotate clockwise.
Further, the cutting blade is a pipe processing machine configured by attaching a plurality of grooved blades concentrically with the rotation center thereof.
[0006]
Embodiment
FIG. 1 is a partially cutaway side view of a pipe processing machine according to an embodiment of the present invention, and FIG. 2 is a front view thereof.
1 and 2, reference numeral 1 denotes a tool base for fixing a pipe processing machine for cutting a pipe and performing a groove processing on the pipe. A well-known method for holding and fixing a pipe P as a member to be cut on the tool base 1 is shown. The vice body 2 is fixed by fixing means 3 such as screws. The vise main body 2 includes three tightening handles 4 and V blocks 5 arranged to face both sides of the pipe. The V block 5 is opposed to the other via a screw mechanism (not shown) by rotating the tightening handle 4. The pipe P can be fixed to the vice main body 2 by causing the pipe P to be held close to each other. Note that the vice main body 2 is not a feature of the present invention, and thus detailed description thereof will be omitted.
[0007]
A rotating body 6 having a hole 7 that can penetrate the pipe P is rotatably attached to the vice body 2 through a bearing. A pipe P as a member to be cut fixed to the vice body 2 by the V block 5 and attached through the rotating body 6 is a drive motor 8 attached to the rotating body 6 rotating around the pipe P. It is cut | disconnected by the disk-shaped cutting blade with which it was mounted | worn.
The rotating body 6 includes a link mechanism 10 that functions to move three feeding handles 9 for rotating the rotating body 6 and a drive motor 8 having a cutting blade toward the pipe P (details will be described later). The cutting mechanism 15 that operates the link mechanism 10 to cut the cutting blade attached to the drive motor 8 into the pipe P, the cutting amount adjustment mechanism 35 that adjusts the cutting amount, and the like are attached. Hereinafter, the configuration of the link mechanism 10, the cutting mechanism 15, the cutting amount adjusting mechanism 35, and the like attached to the rotating body 6 will be described in order.
[0008]
In FIG. 2, one end of the first joint 11 is swingably provided on the rotating body 6 by a bolt 6 a serving as a fulcrum A, and the other end of the first joint 11 is supported by a bolt 6 b serving as a fulcrum B. One end of the two joints 12 is swingably attached. As shown in FIG. 4, a pivot shaft 12a is formed on the second joint 12, and a rack holder 13 is rotatably attached to the pivot shaft via a bush 12b (in FIG. 2, the rack holder 13 and The connection state with the second joint 12 is hidden by the drive motor and cannot be seen). As shown in FIG. 4, a rotation shaft 8 </ b> G of a drive motor 8 provided with a cutting blade 50 is attached to a central portion of a pivot shaft 12 a formed on the second joint 12 via a roller bearing 53.
Further, a rack 14 is fixed to the other end of the rack holder 13 at a right angle to the rack holder 13 as shown in FIG. 2, and the rack 14 adjusts the pinion 16 and the cutting amount in the cutting mechanism 15 shown in FIG. The link mechanism 10 is engaged with the pinion 38 in the mechanism 35, and the first joint 11, the second joint 12, the rack holder 13, and the rack 14 constitute the link mechanism 10.
[0009]
A pinion 16 constituting a cutting mechanism 15 (which will be described in detail later) is formed integrally with a gear shaft 17 that is supported by a shaft support member 18 described later. The gear shaft 17 is coupled to a cutting handle 15A (detailed configuration will be described later), and the pinion 16 rotates together with the gear shaft 17 by rotating the cutting handle 15A counterclockwise in FIG. 1 and 2, the rack 14 can be pulled straight upward toward the pipe P in FIGS.
[0010]
Here, a state in which the cutting blade 50 is cut into the pipe P while the rack 14 is pulled up by the cutting mechanism 15 will be described with reference to FIGS. 1 and 2. When the cutting handle 15A is turned counterclockwise. The pinion 16 rotates and the rack 14 meshing with the pinion 16 moves straight upward in FIG. 2 together with the rack holder 13. As the rack holder 13 is raised, the pivot point between the rack holder 13 and the second joint 12 is also moved upward, and the drive motor 8 having the cutting blade 50 attached to the pivot shaft 12a is also raised. With this movement, the second joint 12 swings at the pivot shaft 12a and the fulcrum B of the second joint 12 and the first joint 11, and the first joint 11 also swings at the fulcrum A. The cutting blade 50 of the drive motor 8 can rise straight toward the center of the pipe P due to the relationship between the first joint 11 and the second joint 12. As a matter of course, the rack 14 also rises straight upward in the drawing.
[0011]
Next, the assembly structure of the vice main body 2, the rack 14, and the pinion 16, the cutting mechanism 15, and the cutting amount adjusting mechanism will be described with reference to FIG.
FIG. 3A is a partially broken rear view of the vice main body 2 and the rack 14, and FIG. 3B is a cross-sectional view of the pinion cutting mechanism 15 and the cutting amount adjusting mechanism 35.
In FIG. 3, a shaft support member 18 is fixed to the rotating body 6, and a hollow gear shaft 17 is rotatably held by bearings 19 and 20 at the center of the shaft support member 18. The pinion 16 is formed on the outer periphery of the gear shaft 17, and the pinion 16 meshes with the rack 14 slidably held by a shaft support member 18. A shaft 21 for fixing the cutting handle 15A is inserted into the hollow of the gear shaft 17 and connected by a pin 15b. A lock pin 22 is inserted coaxially with the shaft 21 so as to be freely inserted and removed. Is urged to the left in the figure by a spring 23 provided between the gear shaft 17 and the gear shaft 17. A one-way clutch 24 is provided between the lock pin 22 and the inner periphery of the gear shaft 17, and this one-way clutch is when the large-diameter portion 22 a formed on the lock pin 22 is engaged with the one-way clutch 24. The gear shaft 17 is allowed to rotate only counterclockwise in FIG.
[0012]
An end portion of the lock pin 22 protrudes from the shaft support member 18, and a clamp 25 is swingably connected to the lock pin 22 by a pin 26. The clamp 25 is connected to the shaft support member 18 by a pin 27. On the other hand, it is provided so as to be swingable. The clamp 25 includes a first locking portion 28 that engages with a slide sheet lower end 42a of a cut amount adjusting mechanism 35 described later, a second locking portion 29 that locks with a swing stopper 31 described later, and the swing stopper 31 and An inclined surface 30 is formed in contact therewith.
[0013]
As shown in FIG. 3A, the swing stopper 31 to be locked to the second locking portion 29 of the clamp 25 is provided on the vice body 2 by a pin 32 so as to be swingable. It is always urged downward in the figure and maintains a position protruding in the horizontal direction from the vice main body 2. When the swing stopper 31 and the second locking portion 29 of the clamp 25 are locked in this protruding state, the clamp 29 is in a vertical state as shown in FIG. 3B, and slides with the first locking portion 28 of the clamp 25. The engagement with the sheet lower end 42 a is released, and the cut adjustment mechanism 35 can move up and down on the rack 14 without being obstructed by the clamp 25. When the clamp 25 swings counterclockwise about the pin 27, the first locking portion 28 of the clamp 25 engages with the slide sheet lower end 42a, and the cut amount adjusting mechanism 35 is integrated with the cut mechanism 15. Become. The mechanism of the clamp 25 constitutes a lock means.
[0014]
In addition to the cutting mechanism 15, the rack 14 is provided with a cutting amount adjusting mechanism 35 slidably. An adjuster body 36 of the cutting amount adjusting mechanism 35 is provided with a shaft 37, and the shaft 37 is provided with a key. A pinion 38 that meshes with the rack 14 and a worm wheel 39 for adjusting the cutting amount are provided, and a worm 41 attached to a cutting amount adjusting handle 40 (see FIG. 2) is provided on the adjuster body 36 of the cutting amount adjusting mechanism 35. The worm 41 and the worm wheel 39 are engaged with each other. Therefore, when the cut amount adjusting handle 40 is rotated, the worm 41 is rotated, the worm wheel 39 engaged with the worm 41 is rotated, the shaft 37 is rotated, and the pinion 38 is rotated, thereby the cut amount adjusting mechanism. 35 moves on the rack 14 so that the gap S (that is, the cut amount) between the bottom surface 18a of the shaft support member 18 and the upper surface 36a of the adjuster main body 36 of the cut amount adjusting mechanism 35 can be adjusted.
[0015]
A slide sheet 42 for positioning is fixed to the adjuster main body 36 with screws 43, and the lock pin 22 is disposed through a long hole 42 a formed in the slide sheet 42. It has a configuration that does not hinder movement. A side plate 44 is fixed between the slide sheet 42 and the shaft support member 18, and the side shaft 44 holds the gear shaft 17 from the shaft support member 18 in a state of being prevented from coming off.
[0016]
The configuration of the drive motor 8 will be described with reference to FIG.
The drive motor 8 is arranged coaxially with the first bevel gear 8C attached to the switch 8A and the output shaft 8B of the drive motor, the second bevel gear 8D meshed with the first bevel gear 8C, and the second bevel gear 8D. A small gear 8E and a large gear 8F that meshes with the small gear 8E are provided, and a cutting blade 50 is fixed to a rotating shaft 8G of the large gear 8F. The large and small gears 8F and 8E are covered by a case 8H, and a pivot shaft 12a is formed on the second joint 12. A rack holder 13 is pivotally coupled to the pivot shaft 12a by a stop ring via a bush 12b. ing. When the switch 8A is turned on, the driving motor 8 is driven to rotate the cutting blade 50 through the gear train, thereby cutting the pipe P.
[0017]
Further, as shown in FIG. 5, the cutting blade 50 is formed with a cutting blade 51 around a disc shape, and the nut is held between the plate 53 and the holder 54 at the tip of the rotating shaft 8 </ b> G of the drive motor 8. It is fixed by 55. Three grooved blades 52 are attached to the holder 54 concentrically with the cutting blade 51 formed around the cutting blade 50 with screws 56, and the grooved blade 52 is formed in the side surface of the cutting blade 50. It is provided in a state protruding from 51a to the opposite side. The grooved blade 52 is for forming a chamfered portion for a groove on the outer peripheral surface of the cut pipe P, and is fixed at an inclination. When the cutting blade 50 is used, the cutting blade 51 causes the pipe to be cut. The chamfering of the pipe P can be performed by the groove cutter 52 attached to the same cutting blade 50 after the P cutting. For this reason, the trouble of replacing the blade edge as in the conventional case can be saved, and the work efficiency can be improved. Note that the inclination angle and the number of attachments of the grooved cutter 52 can be arbitrarily set at the time of design as required. Moreover, although the said plate 53, the holder 54, and the cutting blade 51 are comprised separately, you may assemble | attach three persons integrally beforehand.
[0018]
The operation of the pipe processing machine having the above configuration will be described. First, in FIG. 1 and FIG. 2, the pipe P as a member to be cut is positioned and fixed by the vice body 2 . A rotating body 6 is rotatably disposed around the positioned pipe P. At this time, the second locking portion 29 of the clamp 25 is engaged with the swing stopper 31, and as a result, the first locking portion 28 is parallel to the side surface of the slide seat 42 [FIG. ]]. In this state, when the cut amount adjusting handle 40 in the cut amount adjusting mechanism 35 shown in FIG. 2 is rotated, the worm 41 is rotated in FIG. 3B, and the worm wheel 39 engaged with the worm 41 is further rotated. Then, the shaft 37 rotates via the key, and the pinion 38 rotates, whereby the adjuster body 36 moves on the rack 14 together with the slide seat. Since the slide sheet 42 is formed with a long hole, the movement of the slide sheet is not hindered by the lock pin 22. By this operation, the gap S (that is, the cut amount) between the bottom surface 18a of the shaft support member 18 and the top surface 36a of the adjuster body 36 is adjusted. That is, the gap S determines the cutting depth of the cutting blade 50 into the pipe P. When the cutting depth of the cutting blade 50 into the pipe P is thus determined, the switch 8A of the driving motor 8 is turned on to drive the driving motor 8 and rotate the cutting blade 50.
[0019]
In this state, when the cutting handle 15A is turned counterclockwise in the drawing, the rack 14 is pulled up by the pinion 16 constituting the cutting mechanism 15, and the adjuster body 36 moves upward together with the rack 14 to move the upper surface of the adjuster body 36. 36a contacts the bottom surface 18a of the shaft support member 18 (see FIG. 6). At this time, as the rack 14 is pulled up, the rack holder 13 integral with the rack 14, the rack holder 13, the second joint 12, and the drive motor 8 attached to the pivot shaft are also raised by the gap S. The cutting blade 50 is cut into the member to be cut (pipe P).
[0020]
After this state, when the rotary handle 6 is rotated by operating the feed handle 9 attached to the rotary body 6, the cut amount adjusting mechanism 35 integrated with the rotary body 6 also rotates, and the clamp 25 The second locking portion 29 is separated from the swing stopper 31. As a result, the clamp 25 swings counterclockwise around the pin 27 by the urging force of the spring 23 acting on the lock pin 22, and the first locking portion 28 of the clamp 25 is fixed to the adjuster body 36. The slide sheet is engaged with the lower end portion 42a. By this operation, the cut amount adjusting mechanism 35 and the shaft support member 18 are integrated (the locked state shown in FIG. 7 is obtained). At the same time, the lock pin 22 is moved leftward by the urging force of the spring 23, the large diameter portion 22a of the lock pin 22 is engaged with the one-way clutch 24, and the cutting handle 15A is rotated clockwise (in FIG. 2). ) Lock to prevent rotation.
[0021]
After this state, when the rotating body 6 is rotated once around the pipe P by the feeding handle 9 shown in FIG. 2, the cutting blade 51 cuts the pipe P with a predetermined cutting depth. When the rotating body 6 is further rotated more than once after cutting, the inclined surface 30 of the clamp 25 pushes up the swing stopper 31 against the urging force of the spring 33 as shown in FIG. Get over the stopper 31. When the clamp 25 gets over the swing stopper 31, the swing stopper 31 returns to the horizontal state by the biasing force of the spring 33, and when the rotating body 6 in FIG. 29 and the swing stopper 31 are engaged, and the clamp 25 swings clockwise around the pin 27 to release the engagement between the first locking portion 28 of the clamp 25 and the slide seat lower end portion 42a. The lock pin 22 moves to the right against the spring 23, and the one-way clutch 24 and the large-diameter portion 22a are disengaged. If it will be in this state, it will become possible to move the cutting amount adjustment mechanism 35 on the rack 14 again (it will be in an initial state). During this time, the drive motor 8 rotates 360 degrees or more around the pipe P, so that no uncut portion is generated in the pipe P. Since the one-way clutch is disengaged at this time, the cutting handle 40 can be reversed, the gear shaft 17 forming the pinion 16 is reversed, and the rack 14 can be moved downward. Even if the drive motor 8 is pushed down, the rack 14 can be moved downward.
In the pipe processing machine having the above-described configuration, when the drive motor, the cutting blade or the like fails or is damaged, the cutting blade or the like can be easily replaced by simply removing the drive motor from the link mechanism.
[0022]
The above embodiment is only one of the embodiments of the present invention. If the link mechanism has a function of moving the cutting blade of the drive motor straight toward the center of the pipe, another link mechanism is adopted. It is also possible to do. Of course, the cutting handle mechanism and the cutting amount adjusting mechanism are not limited to the rack and pinion type, and other types can be used. Furthermore, the present invention can be implemented in various other forms without departing from the spirit or main features of the present invention. For this reason, the above-described embodiments are merely examples in all respects and should not be interpreted in a limited manner.
[0023]
【The invention's effect】
As described in detail above, according to the present invention,
Since the drive motor is supported by the link mechanism, the drive motor can be easily attached and detached, and the cutting blade can be easily replaced. Furthermore, by providing the cutting blade and the grooved tool integrally on the rotating shaft of the drive motor, the cutting and the groove work can be performed without exchanging the blade. In addition, excellent effects such as miniaturization of the motor, reduction in size and weight of the main body structure, and ease of operation can be achieved.
[Brief description of the drawings]
FIG. 1 is a partially broken side view of a pipe cutting / groove processing machine according to an embodiment of the present invention.
FIG. 2 is a front view of FIG.
FIG. 3 is an enlarged view of a main part of FIG. 1 and a rear view thereof.
FIG. 4 is a partially cutaway side view of a drive motor having a cutting blade.
FIG. 5 is a front view and a side view of a cutting blade.
FIG. 6 is an explanatory diagram of cutting amount adjustment.
FIG. 7 is an explanatory diagram of the cut amount adjustment.
FIG. 8 is an operation diagram of the swing stopper.
[Explanation of symbols]
1 Tool stand 2 Vise body 3 Screw (fixing means)
4 Tightening handle 5 V block 6 Rotating body 7 Hole 8 Drive motor 9 Feeding handle 10 Link mechanism 11 First joint 12 Second joint 13 Rack holder 14 Rack (rack member)
15 Cutting mechanism 15A Cutting handle 16 Pinion 17 Gear shaft 18 Shaft support members 19, 20 Bearing 21 Shaft 22 Lock pin (lock member)
23 Spring 25 Clamp 26, 27 Pin 28 First locking portion 29 Second locking portion 30 Inclined surface 31 Swing stopper 32 Pin 33 Spring 35 Cutting adjustment mechanism 36 Adjuster body 37 Shaft 38 Pinion 39 Worm wheel 40 Cutting amount adjustment handle 41 Warm 42 Slide sheet 44 Side plate 50 Cutting blade 51 Cutting blade 52 Groove blade P Pipe S Gap

Claims (8)

A rotating body that is rotatably attached to the vice body and that can penetrate a pipe as a member to be cut is provided, and the rotating body has a cutting blade that can contact and separate toward the rotation center of the rotating body via a link mechanism. A pipe processing machine to which a drive motor is attached , wherein the link mechanism operates the link mechanism to move the drive motor having the cutting blade toward the center of the rotating body, and a cut amount of the cut mechanism And a lock means for locking the cut amount adjusting mechanism. The link mechanism is swingably attached to the rotating body, and swings on the first joint. A second joint that is freely attached; a rack holder that is swingably attached to the second joint; Constituted by a rack meshing with a pinion constituting the interrupt mechanism, the pipe processing machine, characterized by comprising attaching a drive motor having a cutting blade pivot point of the second joint and the rack holder. The incision mechanism includes a shaft support member attached to a rotating body, a pinion rotatably provided on the shaft support member and meshing with the rack, and a notch handle for rotating the pinion. The rack is moved relative to the rotating body by operating the handle and rotating the pinion so that the drive motor having the cutting blade can be moved toward and away from the rotating body center by the movement of the rack. The pipe processing machine according to claim 1 . The incision amount adjusting mechanism includes an adjuster body movably provided on the rack, a pinion rotatably provided on the adjuster body and meshing with the rack, and an incision amount adjusting handle for rotating the pinion. The pinion is rotated by operating the cut amount adjustment handle, and the adjuster body moves on the rack by the rotation of the pinion so that the distance from the shaft support member of the cut mechanism can be adjusted. The pipe processing machine according to claim 2 . The pipe processing machine according to claim 2 or 3 , wherein the shaft support member is provided with a lock unit that fixes the shaft support member and the cut amount adjusting mechanism. The said locking means is comprised so that a movement to a locked state is possible by the locking member pressed by the spring provided in the said shaft support member, The Claim 2 characterized by the above-mentioned. Pipe processing machine. 6. The lock unit according to any one of claims 2 to 5 , wherein a lock release state can be maintained by engaging with a swing stopper that is swingably provided on the vice body . Pipe processing machine. The pipe processing machine according to claim 6 , wherein the swing stopper allows clockwise rotation of the rotating body. The pipe cutting machine according to any one of claims 1 to 7 , wherein the cutting blade is configured by attaching a plurality of grooved blades concentrically with a rotation center thereof.

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