CA1199862A - Cutting machine of pipe member - Google Patents
Cutting machine of pipe memberInfo
- Publication number
- CA1199862A CA1199862A CA000407595A CA407595A CA1199862A CA 1199862 A CA1199862 A CA 1199862A CA 000407595 A CA000407595 A CA 000407595A CA 407595 A CA407595 A CA 407595A CA 1199862 A CA1199862 A CA 1199862A
- Authority
- CA
- Canada
- Prior art keywords
- machine
- cutting
- pipe member
- cutting devices
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D25/00—Machines or arrangements for shearing stock while the latter is travelling otherwise than in the direction of the cut
- B23D25/02—Flying shearing machines
- B23D25/04—Flying shearing machines in which a cutting unit moves bodily with the work while cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
- Accessories And Tools For Shearing Machines (AREA)
- Shearing Machines (AREA)
Abstract
ABSTRACT OF DISCLOSURE
A cutting machine for a pipe member comprises a plurality of cutting devices which are disposed in series along a transfer line and are movable partially or as a whole in the transfer line, and support rollers which are disposed between the cutting devices and are movable in the transfer line, thereby to cut the pipe member at a plurality of parts simultaneously.
A cutting machine for a pipe member comprises a plurality of cutting devices which are disposed in series along a transfer line and are movable partially or as a whole in the transfer line, and support rollers which are disposed between the cutting devices and are movable in the transfer line, thereby to cut the pipe member at a plurality of parts simultaneously.
Description
This invention relates to a method and apparatus for cutting pipe.
Apparatus is known for cutting lengthy pipe members, in particular there is known a structure composed of cutting devices disposed on a transfer line and comprising roller conveyers. In this apparatus, the cutting operation comprises transferring the member to be cut, stopping the movement in response to a determined length with a stopper, cutting the pipe member by means of the cutting apparatus, and trans-ferring out the cut pipe member. However, this conventionalapparatus is able to cut the member at one portion only.
Therefore, it is necessary to cut the pipe member by a determined length and move it in succession for cutting a plurality of parts of the pipe member. Moreover, an in-efficient working operation is required which requires repeated chucking and releasing of the pipe member for each of the cutting operations.
It is also conventional to arrange in parallel a plurality of cutting devices comprising the transfer line ~. .
and the cutting machines in order to secure a production amount, but in this case it is inevitable that inefficient working results, as mentioned above, in the cutting of lengthy pipe members. Therefore, the productivity is low in the conventional processes, taking into consideration such factors as the scale of the whole facili-ty, and the provisions of the transfer line, The present invention seeks to remove defects involved with the prior art, and to provide an improved cutting machine.
The invention seeks to provide a cutting machine ..~.
8~
which is able to cut the pipe member at a plurality of parts simultaneously.
The invention also seeks to provide a cutting machine able to carry out an efficient cutting operation, and on a comparatively small scale.
The invention further seeks to provide a cutting machine able to cut the pipe member by a desired length at a plurality of parts.
The invention also seeks to provide a cutting machine able to exactly cut the pipe member, irrespective whether the diameter is large or small.
The invention further see~s to provide a cutting machine able to stop the pipe member at determined positions without using a stopper.
Still further the invention seeks to provide a cutting machine able to efficiently transfer the pipe member, cut and transfer it out, and which is suitable for a continuous production facility.
In accordance with the invention there is provided an apparatus which comprises a plurality o~ cutting devices which are disposed in series along a transfer line and are movable partially or as a whole, and support rollers which are disposed between the cutting devices and movable in the transfer line.
In partieular the apparatus includes means for adjusting thepositions of the eutting deviees and the support rollers for cutting a pipe member at the plurality of parts simultaneously.
In accordance with another aspeet of the invention there is provided a method of cutting a pipe member comprises feeding a pipe member along a transferring line, cutting said pipe member at predetermined positions by means of a plurality of cutting devices disposed in series along said transferring line, and supporting said pipe member between said cutting devices.
In a particular embodiment of the method the pipe member is cut simultaneously at a plurality of predetermined positions.
The invention is illustrated in particular and preerred embodiments by reference to the accompanying drawings in which:
Figure 1 is a whole plan view showing one embodiment of an apparatus of the invention, Figure 2 is a side view of a cutting apparatus and support rollers which comprise an apparatus of the invention, Figure 3 is a front view of an apparatus of the invention, Fi~ure 4 which appears after Figure 5, is an explanatory view showing chucks and a clamp mechanism to be used in a cutting apparatus of the invention, and Figure 5 which appears on the same sheet as Figure 3 is an explanatory view showing application of the cutting machine to a facility for continuous~y producing steel pipe.
An explanation will be made of an embodiment of the invention by reference to the attached drawings.
An apparatus of the invention is provided with a plurality of cutting devices which are disposed in series along a transfer line and are movable partially or as a whole, and support rollers which are movable in the line direction between the respective cutting devices.
B~Z
With reference to Figure 1, cutting devices A are designated Al to A6 and are disposed in series along the trans-fer line L, and the reference numeral 1 identifies support rollers which are movably positioned in the line direction between cutting rollers A. The cutting devices Al to A5 are movable in the line direction, and the exit end device A6 is fixed at the transferring exit. Two support rollers la are movably located in front of the entry end cutting device Al.
The above mentioned cutting apparatus and the support rollers are positioned on a bed 2 provided on the txansfer line L. On the bed 2, there are laid guide rails 3, 3 so that the cutting apparatus and the support rollers are movable thereon.
Figures 2 to 4 show the structure of the movable cutting apparatus A and the support rollers 1. The apparatus A is provided with a foot 4 for running on the guide rails 3, 3 on which there are provided cutters 5 and 5, a clamp 6 for a pipe member P to be cut, and a chuck 7.
The cutters 5, 5 are supported by cutter units 8, 8 and the supported cutters 5, 5 separate or approach with res-pect to the direction of the pipe member P under cutting. Guide rails 9 are laid in the width of the foot 4. The cutters 5, 5 move as the cutter units 8, 8 transfer on the guide rails 9. Each of the cutter units 8 is provided with a cutter driving motor 10, and -the driving force of the motor 10 is transmitted to the cutter 5 via a reduction gear (not shown).
On the foot 4, the clamp device 6 is provided adjacent to the cutters 5, 5. That is, a supporter 11 stands on the foot 4 for holding the clamp 6, and clamps 12, 12 are mounted on the supporter 11 and the foot 4, respectively.
50 that they hold the pipe member P at both sides. The clamps 12 comprise the supporter 11, fixing members 13 secured to the support 11 and the foot 4, cylinders 14 secured to the members 13, a roller holder 15 provided on the rod of the cylinder 14, and clamp rollers 16 which are rotatably provided at four positions of the roller holder 15. The clamp rollers 16 of the clamps 12, 12 separate or approach with respect to the direction of the member P under cutting.
A chuck device 7 for the member P is provided adjacent the clamp device 6. The chuck device 7 of this embodiment comprises a scroll chuck. A main body 17 of the chuck device 7 is rotatably prouided to a proper supporter on the foot 4, and is rotated by the driving force of the motor and the gear mechanism. The main body 17 is rotated while it chucks the member P under cutting~
In addition to the above mentioned structure, there are respectively provided transfer rolls 1~ at an exit side of the foot 4 in the transfer line L, and pinch rollers 19 at an entrance side thereof. With respect to the transfer roll 18, cylinders 20, 20 are fixed to the foot 4, and a roller support 21 is fixed on ends of rods of the cylinders.
A roll 18 is equipped on the roller support 21 vla a bearing, and a roller driving motor 22 is furnished thereon. The transfer roller 18 is movable vertically by the cylinders 20, 20. With respect to the pinch roller 19, cylinders 23, - 23 are fixed on the foot 4, and a roller 24 is fixed on ends of rods of the cylinders. A lower roller 25 i5 equipped on the roller support 24 via a bearing. The lower roller 30 25 is movable vertically by the cylinders 23, 23. At the B~
upper part of the lower roller 25, an upper roller 27 is supported to vertically move by means of cylinders 26, 26 secured on the foot 4. With respect to the pinch roller 19, the lower roller 25 is a driving roller driven by the motor 28, and the upper roller 27 is an idle roller to effect breaking of -the transferred member to be cut.
The support roller 1 (or la) is supported on a ~oot 32 via cylinder 32. That is, the cylinders 33, 33 are mounted on the foot 32, and a roller supporter 34 is fixed on ends of rods of the cylinders. The support roller 1 is provided on the roller supporter 34 via a bearing, and a motor 35 is furnished for driving the support roller 1.
The support roller 1 is vertically movable by means of the cylinders 33, 33.
The cutting apparatus A and the support roller 1 are not always limited to the above mentioned structural embodiment. For example, the pipe member P may be stationary while the rotating cutter is whirled as planets around the pipe member, and structure to be required to such process could be mounted on the foot 4. As the cutters there may be employed cutting tools, grinders and the like. Further, on each foot 4 or 32, partial omission, alternation or addition of the above mentioned various mechanisms may be effected.
Especially, in the present invention, a plurality of cutting devices are disposed in the line direction, and in the cutting apparatus, the plurality of cutting devices is not always the same in structure, and there exists the opportunity for partial omission, alternation or addition of the structure for each of the cutting devices. For example, the chuck devices are prepared f~r all the cutting devices, but the rotary driving mechanism thereof need not necessarily be furnished to all the chuck devices. In the present example, the rollers of the transfer line (transfer roller 18 and support roller 1) are driving rollers, but the idle roller may be partially substituted therefor. The pinch rollers 19 may be positioned at optional places of the cutting devices, and the support roller 1 may be replaced with the pinch roller. It is preferable to provide the pinch rollers 19 for each of the cutting devices or the support rollers, but there is no limitation thereto. It is sufficient to provide the pinch roller at one position of the cutting machine or the support roller at least at the entrance of the transfer line.
In order to move the cutting apparatus A and the support roller 1 on the guide rails 3, the beds 2 are provided with racks 29, 29 along the guide rails 3, 3. Under the feet 4 and 32 of the cutting apparatus and the support roller, there are arrangedpinions 31, 31 gearing the racks 29, 29 20 and to be driven by the motors 30 and 36. The pinions 31, 31 transfer the cutting apparatus A and the support roller 1 in the transfer line. For this trans~er system, a cylinder system or the like may be employed.
In the present example, the exit end cutting device A6 is stationary, and has the same structure as those of the other cutting devices, excepting that it is stationary. The reference numeral 37 in Fig. 1 designates roller tables.
The invention is not limited to having the exit end cutting device stationary and the others movable in the line direction. That is, all of the cutting devices may be ~9~ 2 structured as movable, or one or more than two may be structured as stationary.
A further reference will be made to actuation of the cutting machine of the present invention. The cutting machine as mentioned above could cut the plurality of parts of the pipe member simultaneously. Herein an explanation will be made to this regard.
Prior to entrance for transferring of the pipe member, the cutting apparatus A is positioned in accordance with the desired cutting length. For example, if a pipe member of 60m is to be cut at four point, the cutting is under-taken at five parts of the member including cropping off.
Therefore, the apparatus A is moved in the bed 2 such that the five cutting devices are positioned at 15m intervals, and at the same time the support rollers are moved to center points between the cutting devices. Core alignment is provided bet-ween the member P and the cutters 5, 5 by vertically moving the transfer roller 18 (or idle roller ) and the pinch roller 19 (the upper roller 27 and the lower roller 25) by the cylinder.
Under this condition, the member P is transferred by the transfer roller 18. The transferred member P comes to the determined position as breaking by!the pinch roller 19.
Breaking of the pinch roller 19 is to synchronize the speed of the transfer roller 18 and member P so that they do not slip from each other, thereby to position the mémber P as determined only by control of the transfer roller 18, without using a stopper or similar means. However, the present invention may use a stopper as conven-tionally.
The member P transferred in the above manner is . g _ ~31~62 chucked by means of the chuck device 7 as well as vertically clamped by means of the clamps 12, 12 of the clamp device 6.
Centering of the member P is provided by the chuck. Under this condition, the cutters 5, 5 of the apparatus A move towards the member P, and the cutting operation is started.
The cutting is carried out by cutting the thickness of the pipe, and the pipe P is rotated by the chuck device 7 rotating during the cutting operation, and the cutting is completed at the determined angular rotation. The member P is cropped at both ends, and the plurality of parts are cut simultaneously.
The clamps 12, 12 clamp the member P such that each of the clamp rollers 16 rotates on the outer circumference of the member P, and prevent vibration of the member P in the diameter direction, The support roller 1 supports the member P between the cutting devices before and after cutting.
When the cutting is finished, each of the chuck devices 7 and each of the clamp devices 6 are released, and subsequently the transfer rollers 18, the support rollers 1 and the pinch rollers 19 drive respectively to transfer the cut m~mbers and a new member is transferred. Thus, the above process is repeated.
It is possible to apply the cutting machine of the invention to a continuous process for pipe production. Figure 5 illustrates a continuous process line where the cutting machine of the invention is employed. The reference numeral 38 is a constant diameter machine, 39 is a heat treating facility, 40 is a stretching machine, (a) is the cutting machine of the invention, and ~1 is a finishing machine.
According to the cutting machine of the invention, the pipe transferred from the manufacturing process can be cut at the plurality of t~e par~s at the same time, and transferred out in succession. Thus, a highly efficient continuous process may be realized.
:
Apparatus is known for cutting lengthy pipe members, in particular there is known a structure composed of cutting devices disposed on a transfer line and comprising roller conveyers. In this apparatus, the cutting operation comprises transferring the member to be cut, stopping the movement in response to a determined length with a stopper, cutting the pipe member by means of the cutting apparatus, and trans-ferring out the cut pipe member. However, this conventionalapparatus is able to cut the member at one portion only.
Therefore, it is necessary to cut the pipe member by a determined length and move it in succession for cutting a plurality of parts of the pipe member. Moreover, an in-efficient working operation is required which requires repeated chucking and releasing of the pipe member for each of the cutting operations.
It is also conventional to arrange in parallel a plurality of cutting devices comprising the transfer line ~. .
and the cutting machines in order to secure a production amount, but in this case it is inevitable that inefficient working results, as mentioned above, in the cutting of lengthy pipe members. Therefore, the productivity is low in the conventional processes, taking into consideration such factors as the scale of the whole facili-ty, and the provisions of the transfer line, The present invention seeks to remove defects involved with the prior art, and to provide an improved cutting machine.
The invention seeks to provide a cutting machine ..~.
8~
which is able to cut the pipe member at a plurality of parts simultaneously.
The invention also seeks to provide a cutting machine able to carry out an efficient cutting operation, and on a comparatively small scale.
The invention further seeks to provide a cutting machine able to cut the pipe member by a desired length at a plurality of parts.
The invention also seeks to provide a cutting machine able to exactly cut the pipe member, irrespective whether the diameter is large or small.
The invention further see~s to provide a cutting machine able to stop the pipe member at determined positions without using a stopper.
Still further the invention seeks to provide a cutting machine able to efficiently transfer the pipe member, cut and transfer it out, and which is suitable for a continuous production facility.
In accordance with the invention there is provided an apparatus which comprises a plurality o~ cutting devices which are disposed in series along a transfer line and are movable partially or as a whole, and support rollers which are disposed between the cutting devices and movable in the transfer line.
In partieular the apparatus includes means for adjusting thepositions of the eutting deviees and the support rollers for cutting a pipe member at the plurality of parts simultaneously.
In accordance with another aspeet of the invention there is provided a method of cutting a pipe member comprises feeding a pipe member along a transferring line, cutting said pipe member at predetermined positions by means of a plurality of cutting devices disposed in series along said transferring line, and supporting said pipe member between said cutting devices.
In a particular embodiment of the method the pipe member is cut simultaneously at a plurality of predetermined positions.
The invention is illustrated in particular and preerred embodiments by reference to the accompanying drawings in which:
Figure 1 is a whole plan view showing one embodiment of an apparatus of the invention, Figure 2 is a side view of a cutting apparatus and support rollers which comprise an apparatus of the invention, Figure 3 is a front view of an apparatus of the invention, Fi~ure 4 which appears after Figure 5, is an explanatory view showing chucks and a clamp mechanism to be used in a cutting apparatus of the invention, and Figure 5 which appears on the same sheet as Figure 3 is an explanatory view showing application of the cutting machine to a facility for continuous~y producing steel pipe.
An explanation will be made of an embodiment of the invention by reference to the attached drawings.
An apparatus of the invention is provided with a plurality of cutting devices which are disposed in series along a transfer line and are movable partially or as a whole, and support rollers which are movable in the line direction between the respective cutting devices.
B~Z
With reference to Figure 1, cutting devices A are designated Al to A6 and are disposed in series along the trans-fer line L, and the reference numeral 1 identifies support rollers which are movably positioned in the line direction between cutting rollers A. The cutting devices Al to A5 are movable in the line direction, and the exit end device A6 is fixed at the transferring exit. Two support rollers la are movably located in front of the entry end cutting device Al.
The above mentioned cutting apparatus and the support rollers are positioned on a bed 2 provided on the txansfer line L. On the bed 2, there are laid guide rails 3, 3 so that the cutting apparatus and the support rollers are movable thereon.
Figures 2 to 4 show the structure of the movable cutting apparatus A and the support rollers 1. The apparatus A is provided with a foot 4 for running on the guide rails 3, 3 on which there are provided cutters 5 and 5, a clamp 6 for a pipe member P to be cut, and a chuck 7.
The cutters 5, 5 are supported by cutter units 8, 8 and the supported cutters 5, 5 separate or approach with res-pect to the direction of the pipe member P under cutting. Guide rails 9 are laid in the width of the foot 4. The cutters 5, 5 move as the cutter units 8, 8 transfer on the guide rails 9. Each of the cutter units 8 is provided with a cutter driving motor 10, and -the driving force of the motor 10 is transmitted to the cutter 5 via a reduction gear (not shown).
On the foot 4, the clamp device 6 is provided adjacent to the cutters 5, 5. That is, a supporter 11 stands on the foot 4 for holding the clamp 6, and clamps 12, 12 are mounted on the supporter 11 and the foot 4, respectively.
50 that they hold the pipe member P at both sides. The clamps 12 comprise the supporter 11, fixing members 13 secured to the support 11 and the foot 4, cylinders 14 secured to the members 13, a roller holder 15 provided on the rod of the cylinder 14, and clamp rollers 16 which are rotatably provided at four positions of the roller holder 15. The clamp rollers 16 of the clamps 12, 12 separate or approach with respect to the direction of the member P under cutting.
A chuck device 7 for the member P is provided adjacent the clamp device 6. The chuck device 7 of this embodiment comprises a scroll chuck. A main body 17 of the chuck device 7 is rotatably prouided to a proper supporter on the foot 4, and is rotated by the driving force of the motor and the gear mechanism. The main body 17 is rotated while it chucks the member P under cutting~
In addition to the above mentioned structure, there are respectively provided transfer rolls 1~ at an exit side of the foot 4 in the transfer line L, and pinch rollers 19 at an entrance side thereof. With respect to the transfer roll 18, cylinders 20, 20 are fixed to the foot 4, and a roller support 21 is fixed on ends of rods of the cylinders.
A roll 18 is equipped on the roller support 21 vla a bearing, and a roller driving motor 22 is furnished thereon. The transfer roller 18 is movable vertically by the cylinders 20, 20. With respect to the pinch roller 19, cylinders 23, - 23 are fixed on the foot 4, and a roller 24 is fixed on ends of rods of the cylinders. A lower roller 25 i5 equipped on the roller support 24 via a bearing. The lower roller 30 25 is movable vertically by the cylinders 23, 23. At the B~
upper part of the lower roller 25, an upper roller 27 is supported to vertically move by means of cylinders 26, 26 secured on the foot 4. With respect to the pinch roller 19, the lower roller 25 is a driving roller driven by the motor 28, and the upper roller 27 is an idle roller to effect breaking of -the transferred member to be cut.
The support roller 1 (or la) is supported on a ~oot 32 via cylinder 32. That is, the cylinders 33, 33 are mounted on the foot 32, and a roller supporter 34 is fixed on ends of rods of the cylinders. The support roller 1 is provided on the roller supporter 34 via a bearing, and a motor 35 is furnished for driving the support roller 1.
The support roller 1 is vertically movable by means of the cylinders 33, 33.
The cutting apparatus A and the support roller 1 are not always limited to the above mentioned structural embodiment. For example, the pipe member P may be stationary while the rotating cutter is whirled as planets around the pipe member, and structure to be required to such process could be mounted on the foot 4. As the cutters there may be employed cutting tools, grinders and the like. Further, on each foot 4 or 32, partial omission, alternation or addition of the above mentioned various mechanisms may be effected.
Especially, in the present invention, a plurality of cutting devices are disposed in the line direction, and in the cutting apparatus, the plurality of cutting devices is not always the same in structure, and there exists the opportunity for partial omission, alternation or addition of the structure for each of the cutting devices. For example, the chuck devices are prepared f~r all the cutting devices, but the rotary driving mechanism thereof need not necessarily be furnished to all the chuck devices. In the present example, the rollers of the transfer line (transfer roller 18 and support roller 1) are driving rollers, but the idle roller may be partially substituted therefor. The pinch rollers 19 may be positioned at optional places of the cutting devices, and the support roller 1 may be replaced with the pinch roller. It is preferable to provide the pinch rollers 19 for each of the cutting devices or the support rollers, but there is no limitation thereto. It is sufficient to provide the pinch roller at one position of the cutting machine or the support roller at least at the entrance of the transfer line.
In order to move the cutting apparatus A and the support roller 1 on the guide rails 3, the beds 2 are provided with racks 29, 29 along the guide rails 3, 3. Under the feet 4 and 32 of the cutting apparatus and the support roller, there are arrangedpinions 31, 31 gearing the racks 29, 29 20 and to be driven by the motors 30 and 36. The pinions 31, 31 transfer the cutting apparatus A and the support roller 1 in the transfer line. For this trans~er system, a cylinder system or the like may be employed.
In the present example, the exit end cutting device A6 is stationary, and has the same structure as those of the other cutting devices, excepting that it is stationary. The reference numeral 37 in Fig. 1 designates roller tables.
The invention is not limited to having the exit end cutting device stationary and the others movable in the line direction. That is, all of the cutting devices may be ~9~ 2 structured as movable, or one or more than two may be structured as stationary.
A further reference will be made to actuation of the cutting machine of the present invention. The cutting machine as mentioned above could cut the plurality of parts of the pipe member simultaneously. Herein an explanation will be made to this regard.
Prior to entrance for transferring of the pipe member, the cutting apparatus A is positioned in accordance with the desired cutting length. For example, if a pipe member of 60m is to be cut at four point, the cutting is under-taken at five parts of the member including cropping off.
Therefore, the apparatus A is moved in the bed 2 such that the five cutting devices are positioned at 15m intervals, and at the same time the support rollers are moved to center points between the cutting devices. Core alignment is provided bet-ween the member P and the cutters 5, 5 by vertically moving the transfer roller 18 (or idle roller ) and the pinch roller 19 (the upper roller 27 and the lower roller 25) by the cylinder.
Under this condition, the member P is transferred by the transfer roller 18. The transferred member P comes to the determined position as breaking by!the pinch roller 19.
Breaking of the pinch roller 19 is to synchronize the speed of the transfer roller 18 and member P so that they do not slip from each other, thereby to position the mémber P as determined only by control of the transfer roller 18, without using a stopper or similar means. However, the present invention may use a stopper as conven-tionally.
The member P transferred in the above manner is . g _ ~31~62 chucked by means of the chuck device 7 as well as vertically clamped by means of the clamps 12, 12 of the clamp device 6.
Centering of the member P is provided by the chuck. Under this condition, the cutters 5, 5 of the apparatus A move towards the member P, and the cutting operation is started.
The cutting is carried out by cutting the thickness of the pipe, and the pipe P is rotated by the chuck device 7 rotating during the cutting operation, and the cutting is completed at the determined angular rotation. The member P is cropped at both ends, and the plurality of parts are cut simultaneously.
The clamps 12, 12 clamp the member P such that each of the clamp rollers 16 rotates on the outer circumference of the member P, and prevent vibration of the member P in the diameter direction, The support roller 1 supports the member P between the cutting devices before and after cutting.
When the cutting is finished, each of the chuck devices 7 and each of the clamp devices 6 are released, and subsequently the transfer rollers 18, the support rollers 1 and the pinch rollers 19 drive respectively to transfer the cut m~mbers and a new member is transferred. Thus, the above process is repeated.
It is possible to apply the cutting machine of the invention to a continuous process for pipe production. Figure 5 illustrates a continuous process line where the cutting machine of the invention is employed. The reference numeral 38 is a constant diameter machine, 39 is a heat treating facility, 40 is a stretching machine, (a) is the cutting machine of the invention, and ~1 is a finishing machine.
According to the cutting machine of the invention, the pipe transferred from the manufacturing process can be cut at the plurality of t~e par~s at the same time, and transferred out in succession. Thus, a highly efficient continuous process may be realized.
:
Claims (22)
1. A pipe cutting machine which comprises a pipe transfer line, a plurality of cutting devices disposed in series along the transfer line, some or all of said cutting devices being movable lengthways of the transfer line, and pipe support or pinch rollers disposed between said cutting devices.
2. A machine as claimed in claim 1, wherein one of the cutting devices is stationary, and one or a plurality of cutting devices are movable lengthways of the line.
3. A machine as claimed in claim 2, wherein the last cutting device positioned at an exit of the transfer line is stationary.
4. A machine as claimed in claim 3, wherein the cutting devices comprise means for rotating a pipe member, and a cutter is contacted with the rotating pipe member to carry out cutting.
5, A machine as claimed in any of claims 1 to 3, wherein the cutting devices fix the pipe member and a cutter is rotated around the circumference of the pipe member to carry out cutting.
6. A machine as claimed in claim 1, wherein the cutting devices and the support or pinch rollers are positioned on guide rails disposed along the transfer line, and are moved by driving means.
7. A machine as claimed in claim 6, wherein the driving means comprise a rack, pinions engaging the rack, and a motor, the rack being provided along the guide rails, and the pinions being provided for each of the cutting devices and the support or pinch rollers.
8. A machine as claimed in claim 6, wherein the driving means is a cylinder adapted to move the cutting device and the support roller, and each of the cutting devices and each of the support rollers are moved by actuation of the cylinder rod.
9. A machine as claimed in claim 4, wherein the cutting device has a pair of cutters which are movable toward the pipe member to be cut by means of a moving means.
10. A machine as claimed in claim 9, wherein the pair of cutters are held by individual cutter units which are movable on the guide rails disposed on a carriage and in the direction transverse the transfer line.
11. A machine as claimed in claim 1, wherein each of the cutting devices has a clamp means for the pipe member.
12. A machine as claimed in claim 11, wherein the clamp means comprises a pair of cylinders whose rods extend toward the pipe member, and clamp rolls which are provided at the rods of the cylinders.
13. A machine as claimed in claim 1, wherein each of the cutting devices has a chuck means for the pipe member.
14. A machine as claimed in claim 13, wherein some or all of the plurality of chuck means are provided with rotation driving mechanisms for rotating the pipe member when it is chucked.
15. A machine as claimed in claim 1, wherein a stopper and/or pinch roller are provided as braking means for the pipe member.
16. A machine as claimed in claim 15, wherein the pinch roller has an upper roller and a lower roller which are vertically movable.
17. A machine as claimed in claim 15, wherein a pinch roller is provided on a carriage for support of the cutting device, or a pinch roller is used as support roller.
18. A machine as claimed in claim 15, wherein a pinch roller is provided on the cutting device and/or the carriage of the support roller.
19. A machine as claimed in claim 15, wherein some or all of the support rollers are pinch rollers.
20. A machine as claimed in claim 1, wherein transfer rollers are provided for some or all of the cutting devices, and part or all of the transfer rollers and the support rollers are driving rollers.
21. A method of cutting a pipe member comprising feeding a pipe member along a transferring line, cutting said pipe member at predetermined positions by means of a plurality of cutting devices disposed in series along said transferring line, and supporting said pipe member between said cutting devices.
22. A method according to claim 21, wherein said pipe member is cut simultaneously at a plurality of predetermined positions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56113020A JPS5815615A (en) | 1981-07-21 | 1981-07-21 | Cutting machine of tubular body |
| JP113,020 | 1981-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1199862A true CA1199862A (en) | 1986-01-28 |
Family
ID=14601423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000407595A Expired CA1199862A (en) | 1981-07-21 | 1982-07-20 | Cutting machine of pipe member |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5815615A (en) |
| CA (1) | CA1199862A (en) |
| DE (1) | DE3227093A1 (en) |
| FR (1) | FR2510010A1 (en) |
| GB (1) | GB2103986B (en) |
| IT (1) | IT1198393B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026797A (en) * | 2019-04-25 | 2019-07-19 | 张家港市文锋机械有限公司 | The fixture of pipe fitting |
| CN111283504B (en) * | 2020-03-19 | 2024-09-27 | 天津正天实业有限公司 | Steel pipe groove machining device and use method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE616863C (en) * | ||||
| DE380090C (en) * | 1921-09-20 | 1923-09-01 | Andreas Schneider | Pipe cutting machine with knife disc |
| GB388618A (en) * | 1932-05-25 | 1933-03-02 | Walter Hengstenberg | Improvements in and relating to shearing and cutting machines |
| GB501120A (en) * | 1937-08-28 | 1939-02-21 | Schloemann Ag | Improvements in and relating to shearing installations for dividing up rolled bars |
| DE837035C (en) * | 1946-05-04 | 1952-04-17 | Fischer Ag Georg | Pipe cutting machine |
| US2966819A (en) * | 1957-01-15 | 1961-01-03 | Beaver Pipe Tools Inc | Pipe working tool |
| DE1477659A1 (en) * | 1965-01-07 | 1969-06-04 | Pittler Ag Maschf | Sawing machine for cutting up bar material into elongated workpiece blanks |
| US3222962A (en) * | 1965-03-19 | 1965-12-14 | Line Corp K | Multiple disc cutter apparatus |
| DE2420270A1 (en) * | 1974-04-26 | 1975-11-06 | Lutz Kg Maschf Eugen | Positioning device in sawing installation - comprises longitudinal machine frame scale working in conjunction with handwheel fine scale |
| JPS52111079A (en) * | 1976-03-15 | 1977-09-17 | Sumitomo Metal Ind Ltd | Billet revolving-cutting apparatus |
-
1981
- 1981-07-21 JP JP56113020A patent/JPS5815615A/en active Pending
-
1982
- 1982-07-20 GB GB08220906A patent/GB2103986B/en not_active Expired
- 1982-07-20 DE DE19823227093 patent/DE3227093A1/en not_active Ceased
- 1982-07-20 CA CA000407595A patent/CA1199862A/en not_active Expired
- 1982-07-21 IT IT22505/82A patent/IT1198393B/en active
- 1982-07-21 FR FR8212739A patent/FR2510010A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2103986B (en) | 1986-05-08 |
| IT8222505A1 (en) | 1984-01-21 |
| JPS5815615A (en) | 1983-01-29 |
| IT8222505A0 (en) | 1982-07-21 |
| DE3227093A1 (en) | 1983-02-10 |
| GB2103986A (en) | 1983-03-02 |
| IT1198393B (en) | 1988-12-21 |
| FR2510010A1 (en) | 1983-01-28 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |