US3763559A - Pipe cutting apparatus - Google Patents
Pipe cutting apparatus Download PDFInfo
- Publication number
- US3763559A US3763559A US00217882A US3763559DA US3763559A US 3763559 A US3763559 A US 3763559A US 00217882 A US00217882 A US 00217882A US 3763559D A US3763559D A US 3763559DA US 3763559 A US3763559 A US 3763559A
- Authority
- US
- United States
- Prior art keywords
- chain
- pipe
- cutting
- side links
- pin
- 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 - Lifetime
Links
Images
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
Definitions
- ABSTRACT An improvement in pipe cutting apparatus of the type having a number of cutting elements mounted for rotation on pins which also pivotally connect together the links of a roller type chain, means for tightening the chain around the pipe during a pipe cutting operation, and means for moving the chain around the pipe.
- the improvement resides in the fact that the chain tightening means is provided with parts which present co-acting guide surfaces adapted to align the ends of the chain length with respect to each other. Further, means are provided for adjusting the distance between the side links of each chain link and for locking the side links in the adjusted position.
- the present invention relates to an arrangement in pipe cutting apparatus of the type comprising anumber of circular cutting elements mounted on a chain of the roller type which is capable of being placed around the pipe to be cut and which has side links pivotally mounted on pins on which the circular cutting elements, flanked by the side links, are mounted for rotation for cutting engagement with the pipe, tensioning means for connecting together the ends of the length of chain utilized in effectinga cutting operation and for tightening the chain around the pipe, and means connected to the tensioning means for causing the chain to move in the peripheral direction of the pipe, said means being particularly of the type capable of imparting a reciprocating movement to the chain and including attachment means secured to the pipe and a detachable linear piston engine capable of being coupled between the attachment means and the tensioning means.
- An object of the present invention is to provide a new and useful arrangement in pipe cutting apparatus of the above described type, whereby such apparatus can be used for their intended purpose with the minimum of adjustment work and whereby the cutting precision of the apparatus can be retained in a relatively simple manner.
- the distance between the side links of each chain link of the cutting chain be made adjustable and that means be provided for maintaining the adjusted distance between the links, and that the tensioning means components be provided with co-acting guide surfaces arranged to bring the ends'of the chain into correct alignment with each other, thereby ensuring that all cutting elements are placed on and cut trated embodiment, are provided with knurled or serrated surfaces 18 arranged to engage the outer surface of the pipe 11, and which are held in position by means of a roller chain 19, one end of the chain being'secured passes through a hole in a projection 22 on the arm 16,
- FIG. 1 illustrates in plan view a pipe cutting appatus positioned on a pipe and including an arrangement according to the invention.
- HO. 2 is a side view of the apparatus shown in FIG. 1.
- FIG. 3 is a fragmentary view in larger scale, illustrating a preferred arrangement for adjusting the distance between the side links of the chain of cutting elements.
- FIG. 4 illustrates, partly diagrammatically, a device for causing the piston in the linear piston engine to move backwards and forwards.
- the numeral 10 indicates a cutting chain placed around a pipe 11 to be cut.
- the reference numeral 12 indicates a tensioning means for tighting the chain around the pipe 11.
- the tensioning means 12 is connected with a drive means, which in the illustrated embodiment comprises an engine 14 and an engine attachment element 15, by means of a pin 13 in a manner such as to enable the drive means to be readily disconnected from the tensioning means.
- the attachment 15 comprises a substantially V- shaped block having arms 16 and 17 which, in the illuswhile screwed onto the spindle 21 on the side of the projection opposite the hook 20 is a nut 23, by means of which the chain 19 can be tightened around the pipe 11, with the projection 22 acting as an abutment surface, and therewith lock the V-block to the pipe.
- the V-block bar ries a pin 24 which extends parallel with the pipe 11 and which, for the purpose of connecting together the attachment 15 and the engine 14, is arranged to be accommodated in a complementary bore disposed in a bracket structure 25 which is securely connected to the engine 14.
- the engine 14 which is in the form of a linear piston engine, preferably a pneumtatic piston-cylinder assembly, comprises a cylinder 26 housing a piston (not shown), the piston rod of which is indicated by the reference numeral 27.
- the piston rod 27 supports at its free end a bifurcate member 28 arranged to be detachably connected to the tensioning means 12 by means of the pin 13, which passes through a hole of complementary configuration and size in the tensioning means and in the legs of the bifurcate member 28.
- the engine 14 is thus arranged to be pivotally connected to the tensioning means 12 and the attachment 15 by .means of the pins 13 and 24 respectively in a manner to enable it to be easily detached therefrom.
- the tensioning means 12 comprises mainly two parts in the form of arms 30, 31 pivotally connected together at one end thereof by means of a pin 29.
- the aforementioned parts of the tensioning means in theillustrated instance the arms 30, 31, have wide coacting' guide surfaces 32, 33, which ensure that the arms when pivoting around the pin 29 constantly move in one and the same plane extending at right angles to the pin.
- the arm 30 is formed with spaced lugs between which the arm 31 extends so that the co-acting guide surfaces 32,33 confront one another.
- the arm 30 is pivotally connected with one end of the cutting chain 10, for example by means of a pin 34 which passes through the end of the arm 30 and the two side links of the last chain link located at said one end of the chain 10.
- the other arm 31 of the tensioning means 12 is capable of being detachably connected at its end remote from the pin 29 with the other end of the cutting chain, or with the length of chain utilized in the actual cutting operation in those instances, when the chain as a whole is too long for the pipe to be cut.
- an externally threaded spindle 35 which is pivotally mounted in the arm 30 and which passes through a bore or a slot in the arm 31 and which carries on one end a nut 36 arranged to cooperate with the side of the arm 31 remote from the arm 30 as an abutment surface and to be tightened during the pipe cutting operation, as the cutting elements 37 cut into the pipe.
- the cutting chain of the present invention is a roller type chain, having side links 38, 39 and pins 40 pivotally connecting the links together and on which pins the circular cutting elements 37, flanked by the side links 38, 39, are mounted for rotation for cutting engagement with the pipev
- the distance between the side links 38, 39 in each chain link of the cutting chain can be adjusted in a manner to maintain a high degree of precision of the cutting chain despite the wear-and-tear experienced thereby.
- This feature together with the guide surfaces 32, 33 arranged on the tensioning means to ensure that the ends of the chain 10, or of the length of chain used, are aligned correctly with respect to each other, makes certain that, when the chain 10 is placed around the pipe 11, all the cutting elements 37 used in each cutting operation lie directly on and are caused to work along one and the same line which extends around the periphery of the pipe and in a plane perpendicular to the axis of the pipe.
- each cutting element there is preferably arranged on either side of each cutting element a support roller 41.
- the support rollers 41 are rotatably mounted on associated pins 40 and are preferably located between the outermost side links 39, as illustrated in FIG. 3.
- each pin 40 is provided at one end thereof with a preferably cylindrical head 42 and at its other end 43 is in threaded engagement with the outmost side link 39 on the opposite side of the chain l0, thereby preventing the pin 40 from rotating relative the side links 38, 39 together with the cutting elements 37, to avoid unnecessary wear-and-tear.
- the head 42 is suitably provided with a slot 44 or the like for receiving a suitable turning tool, such as a screw driver.
- the set position of the side links 38, 39 is locked by means of a locking nut 45 located on the end 43 of the pin 40.
- the locking nut 45 is preferably provided with a cylindrical outer surface such that with respect to its external configuration the nut conforms substantially with the head 42, and is provided on only a limited portion thereof with spanner engaging surfaces or the like for cooperation with a conventional wrench for tightening the locking nut.
- the end of the arm 31 remote from the pin 29 is preferably fork shaped, the limbs 46 of the fork being provided with hooks or recesses 47 conforming to the heads 42 and the lock nuts 45 of the chain pins 40.
- the pressure medium in the illustrated example compressed air, used to drive the engine 14 enters through an inlet 49 which is provided with a bayonet coupling and which leads to a conventional, pressure controlled three-way directional valve 50, from which extend pipes 51 and 52 for conducting compressed air to the cylinder 26 on either side respectively of the piston (not shown) carrying the piston rod 27.
- the directional valve is controlled by two conventional low pressure-controlled diaphragm valves 53, 54, which, when the piston rod 27 reaches its outermost and innermost positions, switches the compressed air passage in the directional valve 50 so that compressed air is supplied to the cylinder 26 thorugh the line 52 or 51 respectively.
- Working air is supplied to the valve 54 through a line 55, via a manually operated start valve 56, while working air is supplied to the valve 53 through lines 57, 58 directly from the inlet 49.
- a line 59 extending from the line 57 is arranged to conduct compressed air to the start valve 56.
- the diaphragm valve 53, 54 detects the drop in pressure in the cylinder 26 at the end of the inward and outward stroke of the piston, via the air lines 60 and 61 respectively, while working air from the valves 53 and 54 is passed to the directional valve 50 via the line 62 and 63. With this arrangement the piston rod 27 will thus continue to move backwards and forwards, provided that compressed air is supplied through the inlet 49 and the operating button 64 of the start valve 56 is in start position, while the piston rod 27 will stop at its inner position, when the operating button 64 is moved to its stop position.
- said parts with the co-acting guide surfaces include two pivotably connected arms each connected to a respective end of the chain, one of said arms including spaced lugs, the other arm being fitted between said lugs, said co-acting guide surfaces being constituted by flat abutment surfaces in facing contact on said lugs and other arm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
- Jigs For Machine Tools (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE642/71A SE343226B (it) | 1971-01-20 | 1971-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3763559A true US3763559A (en) | 1973-10-09 |
Family
ID=20256883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00217882A Expired - Lifetime US3763559A (en) | 1971-01-20 | 1972-01-14 | Pipe cutting apparatus |
Country Status (9)
Country | Link |
---|---|
US (1) | US3763559A (it) |
JP (1) | JPS5322712B1 (it) |
AU (1) | AU455391B2 (it) |
CA (1) | CA940696A (it) |
DE (1) | DE2202122A1 (it) |
FR (1) | FR2122966A5 (it) |
GB (1) | GB1344947A (it) |
IT (1) | IT946659B (it) |
SE (1) | SE343226B (it) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4370995A (en) * | 1981-01-02 | 1983-02-01 | The Pipe Line Development Co. | Method and apparatus for prenotching a pipeline |
US4663844A (en) * | 1985-05-30 | 1987-05-12 | Elkem A/S | Device for cutting an electrode casing |
EP0300764A2 (en) * | 1987-07-21 | 1989-01-25 | Fusion Group Plc | Tool for plastics pipes |
US5086961A (en) * | 1990-10-31 | 1992-02-11 | Kwik Snap Corporation | Pipe severing method and apparatus |
US5533264A (en) * | 1994-07-28 | 1996-07-09 | At&T Corp. | Apparatus for stripping cable |
US6122827A (en) * | 1998-11-30 | 2000-09-26 | Whitaker; Frederick M. | Hydraulic pipe cutter |
US6141876A (en) * | 1998-05-04 | 2000-11-07 | Emerson Electric Co. | Soil pipe cutter |
US20090005907A1 (en) * | 2007-03-07 | 2009-01-01 | Orbital Robotics Ltd. | Manipulator unit |
US7478480B2 (en) | 2007-03-06 | 2009-01-20 | Vincent Loporchio | Tool for snap-cutting brittle pipe |
US20090235680A1 (en) * | 2006-05-10 | 2009-09-24 | Prendas Capricornio, S.L. | Cooling system by contact |
US20100147094A1 (en) * | 2007-03-07 | 2010-06-17 | Orbital Robotics Ltd. | Centerless robotic platform |
US20110056081A1 (en) * | 2009-09-10 | 2011-03-10 | Emerson Electric Co. | Portable direct action brittle pipe/soil pipe cutter |
US20120042759A1 (en) * | 2010-08-18 | 2012-02-23 | Emerson Electric Co. | Soil pipe cutter jaw for press tool and related methods |
US20170021458A1 (en) * | 2014-04-15 | 2017-01-26 | H&T Marsberg Gmbh & Co. Kg | Cutting an end off a thin-walled hollow body |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2810910C2 (de) * | 1978-03-14 | 1984-08-23 | Klingler, Edwin, Schaffhausen | Vorrichtung zum Abschneiden von Rohren |
SE414463B (sv) * | 1979-05-14 | 1980-08-04 | Erik Lennart Axbjer | Anordning vid roravskerningsapparat |
DE19614611C2 (de) * | 1996-04-15 | 2001-01-11 | Spitznas Maschinenfabrik Gmbh | Rohrtrennvorrichtung |
CN109079221B (zh) * | 2018-08-22 | 2019-10-11 | 江苏爱索新材料科技有限公司 | 一种手动链式切管器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US930755A (en) * | 1909-06-18 | 1909-08-10 | Dennis Long Miller | Machine for cutting large pipe. |
GB645602A (en) * | 1948-11-11 | 1950-11-01 | C & J Hampton Ltd | Improvements in or relating to pipe cutters |
US2641103A (en) * | 1950-01-24 | 1953-06-09 | Pilot Mfg Company | Detachable link for pipecutting tools |
-
1971
- 1971-01-20 SE SE642/71A patent/SE343226B/xx unknown
-
1972
- 1972-01-13 CA CA132,329A patent/CA940696A/en not_active Expired
- 1972-01-13 GB GB162772A patent/GB1344947A/en not_active Expired
- 1972-01-14 US US00217882A patent/US3763559A/en not_active Expired - Lifetime
- 1972-01-18 DE DE19722202122 patent/DE2202122A1/de not_active Ceased
- 1972-01-18 IT IT19477/72A patent/IT946659B/it active
- 1972-01-18 AU AU38010/72A patent/AU455391B2/en not_active Expired
- 1972-01-19 FR FR7201744A patent/FR2122966A5/fr not_active Expired
- 1972-01-20 JP JP730772A patent/JPS5322712B1/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US930755A (en) * | 1909-06-18 | 1909-08-10 | Dennis Long Miller | Machine for cutting large pipe. |
GB645602A (en) * | 1948-11-11 | 1950-11-01 | C & J Hampton Ltd | Improvements in or relating to pipe cutters |
US2641103A (en) * | 1950-01-24 | 1953-06-09 | Pilot Mfg Company | Detachable link for pipecutting tools |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4370995A (en) * | 1981-01-02 | 1983-02-01 | The Pipe Line Development Co. | Method and apparatus for prenotching a pipeline |
US4663844A (en) * | 1985-05-30 | 1987-05-12 | Elkem A/S | Device for cutting an electrode casing |
AU577194B2 (en) * | 1985-05-30 | 1988-09-15 | Elkem A/S | Removing casing from elongate body |
EP0300764A2 (en) * | 1987-07-21 | 1989-01-25 | Fusion Group Plc | Tool for plastics pipes |
EP0300764A3 (en) * | 1987-07-21 | 1990-12-27 | Fusion Group Plc | Tool for plastics pipes |
US5086961A (en) * | 1990-10-31 | 1992-02-11 | Kwik Snap Corporation | Pipe severing method and apparatus |
US5533264A (en) * | 1994-07-28 | 1996-07-09 | At&T Corp. | Apparatus for stripping cable |
US6141876A (en) * | 1998-05-04 | 2000-11-07 | Emerson Electric Co. | Soil pipe cutter |
US6122827A (en) * | 1998-11-30 | 2000-09-26 | Whitaker; Frederick M. | Hydraulic pipe cutter |
US20090235680A1 (en) * | 2006-05-10 | 2009-09-24 | Prendas Capricornio, S.L. | Cooling system by contact |
US7478480B2 (en) | 2007-03-06 | 2009-01-20 | Vincent Loporchio | Tool for snap-cutting brittle pipe |
US20090005907A1 (en) * | 2007-03-07 | 2009-01-01 | Orbital Robotics Ltd. | Manipulator unit |
US20100147094A1 (en) * | 2007-03-07 | 2010-06-17 | Orbital Robotics Ltd. | Centerless robotic platform |
US20110056081A1 (en) * | 2009-09-10 | 2011-03-10 | Emerson Electric Co. | Portable direct action brittle pipe/soil pipe cutter |
US8225511B2 (en) | 2009-09-10 | 2012-07-24 | Emerson Electric Co. | Portable direct action brittle pipe/soil pipe cutter |
US20120042759A1 (en) * | 2010-08-18 | 2012-02-23 | Emerson Electric Co. | Soil pipe cutter jaw for press tool and related methods |
US20170021458A1 (en) * | 2014-04-15 | 2017-01-26 | H&T Marsberg Gmbh & Co. Kg | Cutting an end off a thin-walled hollow body |
Also Published As
Publication number | Publication date |
---|---|
DE2202122A1 (de) | 1972-07-27 |
FR2122966A5 (it) | 1972-09-01 |
CA940696A (en) | 1974-01-29 |
IT946659B (it) | 1973-05-21 |
JPS5322712B1 (it) | 1978-07-10 |
AU455391B2 (en) | 1974-11-21 |
GB1344947A (en) | 1974-01-23 |
AU3801072A (en) | 1973-07-19 |
SE343226B (it) | 1972-03-06 |
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