GB2382409A - Marking-out device - Google Patents
Marking-out device Download PDFInfo
- Publication number
- GB2382409A GB2382409A GB0128003A GB0128003A GB2382409A GB 2382409 A GB2382409 A GB 2382409A GB 0128003 A GB0128003 A GB 0128003A GB 0128003 A GB0128003 A GB 0128003A GB 2382409 A GB2382409 A GB 2382409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- saddle
- arm
- marking
- axis
- spindle
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/005—Marking-out or setting-out work for pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
A marking-out device comprises a saddle 26 for mounting on a first main pipe member 11, and a second saddle 20 for mounting on a branch pipe member 10 for joining to the main pipe member 11. Saddle 26 carries a spindle 28 movable in a slot in the saddle 26 through a range of angles and which carries a rotatable arm 30 in turn carrying a laser projecter 36 which can be moved along the arm 30, and also tilted relative to the arm 30. The laser 36 is used to mark out an eclipse on a main pipe for cutting out an aperture to receive the branch pipe at a desired angle.
Description
<Desc/Clms Page number 1>
MARKING OUT DEVICE
This invention relates to a marking-out device for enabling markingout of geometrically complex joints, such as joints between pipes involving three-dimensional elliptical arcs, to be carried out quickly and accurately to enable such joints to be cut and prepared accurately.
Joints involving curved surfaces such as pipes and other conduits, especially where branch pipes are joined to main pipes in a range of possible mutual angles involve the preparation of elliptical curves in three dimensions in the end of the branch pipe and also in the wall of the main pipe. In order to accurately cut the curves in the pipes it is necessary to first accurately mark out the required curves on the outer walls of the pipes. Because the curves are three dimensional, it is difficult to achieve this by hand and eye methods.
An object of the invention is to provide a marking-out device which will enable the required curves to be marked out preparatory to cutting on the outer surfaces of both pipes involved in the joint. It is a preferred object of the invention that marking-out device is multi capable for use with all types of complex joints and not restricted to use with joining of pipes.
According to the invention, a marking out device comprises support means for mounting the device upon a first member to which a second member is to be joined and defining a first axis of said first member, means defining a second axis incident to said first axis, further means for
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mounting said means defining said second axis in relation to said second member and holding means carried by said means defining said second axis for holding marking indication means, said marking indication means being displaceable upon said holding means in correspondence with a radius of said second member The marking indication means may be mounted on an arm which extends radially from a spindle which defines an axis which is in turn mounted on a saddle which can be placed for example on a pipe comprising said second member, said spindle being arranged to be capable of being displaced about said saddle so as to extend radially relative to the pipe through a range of angular positions.
The arm upon which the marking indication means is mounted is preferably rotatable about the spindle axis, and may be provided with indexing means to hold the arm in a series of angular positions, so that the marking indication device can be used in each position on the pipe along a locus defined by rotation of the arm and positioning the marking indication means radially on the arm.
The marking indication means may comprise a red light laser which produces a red spotlight on a target such as a work piece to be marked out, so that each of a series of spot positions along a desired locus can be marked in turn by a marking pencil as the arm is rotated from position to position defined by the indexing means. In a variant, the marking indication means may comprise a cutting or ablation laser, which is
<Desc/Clms Page number 3>
capable of scoring a line along the desired locus, and in a further variant the laser may be replaced by a cutting tool which is moved along the locus to effect the desired cut rather than marking the locus for subsequent cutting, particularly but not exclusively in the case of plastics pipes.
The saddle may comprise an arcuate, eg. semi-circular member, having a slot there along which provides a guide for movement of the spindle through a series of positions defined by the slot wherein the spindle always extends radially with the locus of the end of the spindle at appoint at the centre of curvature of the saddle. The saddle may in turn be connected to support means which is adapted to be mounted on the first member which may be either a pipe or a flat part (eg. where a pipe is to be passed through a hole to be cut in a flat panel). The support means may be adapted for seating on a pipe, and comprise an arcuate saddle, which may have a circumferential slot which in which a part connected to the first saddle may be mounted so that the first saddle can be tilted to extend radially with respect to the axis of the second saddle to enable the marking indication device to define a locus of a joint for pipes at a nonperpendicular angle, to produce a cut aperture in the pipe in the form of a suitably elongated ellipse.
The support means or second saddle may also include means for securing the support means to the first member, such as an
<Desc/Clms Page number 4>
electromagnetic clamp, which can be deenergised to release the support means from the first member.
The marking indication means may in addition to being slidable along the arm, be arranged to be rotated about an axis perpendicular to the arm so as to describe an arc in the plane of the arm. This feature can enable the marking indication means to be used to mark a locus parallel to the axis of one pipe, and perpendicular to the axis of the other pipe.
A preferred embodiment of marking out device according to the invention will now be described with reference to the accompanying drawings by way of example. In the drawings :Figure 1 shows a typical perpendicular connection of a branch pipe to a main pipe; Figure 2 shows an inclined connection of a branch pipe to a main pipe ; Figure 3 is an elevation view of a preferred embodiment of the marking out device according to the invention; Figure 4 is a view from above of the device shown in Figure 3 ; and Figure 5 is a detail showing the indexing mechanism used for a marking indication device in eth device.
Figure 1 and 2 illustrate the nature of the problem which the present invention is intended to alleviate.
In Figure 1, a branch pipe 10 is to be joined to a main pipe 1.
Because both of the pipes are three dimensional curved bodies, the curvative of the actual cuts required in the wall of the main pipe 11, and
<Desc/Clms Page number 5>
at the end of the branch pipe 10 are three dimensional curves which are complex to mark out and cut. The cut required in the wall of main pipe
11 to accommodate the branch pipe 10 represents a circle projected on a cylinder which presents as a three dimensional saddle shaped curve, which is not easy to visualise and mark out by hand. The cutting of the end of the branch pipe so as to avoid projections into the passage of the main pipe also requires a complex curve, which is even harder to mark out by hand, as all parts cannot be viewed at once.
Figure 2 illustrates the case of an inclined position between the branch pipe 10 and the main pipe 11. The principles involved are similar to the above, but rendered more complex by the fact that the locus of the desired curves is elliptical, with an elongation, which varies with angle of inclination of the branch pipe to the main pipe. The aperture to be cut from the wall of the main pipe Is an ellipse projected onto a cylinder, whilst the end of the branch pipe is inclined as well as curved. This makes both cuts even more difficult to mark out and execute accurately than the simpler perpendicular joint.
The purpose of the invention is to provide a device, which enables such complex curves to be marked out quickly, simply and accurately, by unskilled workers, and an example of such a device is shown in Figures 3 to 5.
The marking out device according to the invention comprises a support device for mounting the device on a first member such as a main
<Desc/Clms Page number 6>
pipe, comprising a first saddle part 20, which incorporates an electromagnet, which is energisable to clamp the device to the first member, and this is connected to a second saddle part 21 in the form of an arcuate member having a slot 22 therein which guides a guide part 23 having a tightenable nut 24 connected by an arm 25 to a second arcuate, semicircular saddle member 26 which has a slot 27 therein.
A threaded spindle 28 is passed through the slot 27 with tightenable and releasable guide nuts 29 thereon cooperating with the saddle member 26. Spindle 28 can be moved in slot 27 to extend radially of the saddle member 26 throughout the angular range defined by slot 27.
Spindle 28 carries an arm 30 at its upper end, which arm 30 is rotatable about spindle 23 through a complete circle. The arm 30 is carried by a rotary joint 31 on the upper end of the spindle, and this incorporates a ratchet device, which enables the angular position of the arm 30 to be indexed ie. held in each of a series of discrete angular positions through a full circle. The ratchet device comprises a notched lower member 31 mounted on the spindle 28, and a ball member 32 held in a socket in the under surface of an upper part 33.
The arm carries a slidable sleeve 34 thereon, which carries, via a pivot 35 with a horizontal axis, a laser device 36, which acts as a marking indicator means. This projects a red spot onto a member positioned below the saddle 26, and the red spot traverses a path or locus on the member as the arm 30 is rotated about the spindle 28. By means
<Desc/Clms Page number 7>
of the pivot 35, the laser device can also be moved to traverse the red spot along a linear locus aligned with the arm 30.
In use, the support means 20, 21 is placed on a first member such as a main pipe, and the electromagnet clamp energised. The guide part 23 is set in the slot 22 to a position corresponding to the junction angle of a second member such as a branch pipe, and the saddle member 26 is Inclined at an angle corresponding to the junction angle, and is placed over a junction pipe, the spindle 28 being rotated in the threaded nuts 29 until the lower end of the spindle 28 bears on the outer surface of the junction pipe. The spindle 28 is adjusted in radial angular position by movement along the slot 27.
The laser 36 is adjusted on the arm 30 to a distance from the spindle 28 corresponding to the radius of the junction pipe, and is then rotated around the spindle 28 by turning the arm 30 in cooperation with the ratchet 31,32, 33, stopping at each position to enable the laser produced red spot to be marked with a marking pen, first on the main pipe to define the cut out from the main pipe to be made, and then on the ends of the branch pipe to mark them for cutting to the corresponding shape.
Variations may be made to design and construction of the marking out device in accordance with the invention. For example a permanent magnet may be used rather than an electromagnet, or a strap provided for securing the support 20,21 to a member. The laser may be a cutting
<Desc/Clms Page number 8>
laser, which etches a groove in the work piece surface, or a cutting tool may be substituted to make for a single step cutting process.
Claims (14)
- Claims 1. A marking out device comprising a support means for mounting the device upon a first member to which a second member is to be joined, said support means defining a first axis of said first member; means defining a second axis incident to said first axis; further means for mounting said means defining said second axis in relation to said second member; and holding means carried by said means defining said second axis, for holding marking indication means, said marking indication means being displaceable upon said holding means in correspondence with a radius of said second member.
- 2. A device according to claim 1, wherein the marking indication means is mounted on an arm which extends radially from a spindle which defines an axis which is is turn mounted on a saddle which can be placed for example on a pipe comprising said second member, said spindle being arranged to be capable of being displaced about said saddle, so as to extend radially relative to the pipe through a range of angular positions.
- 3. A device according to claim 2, wherein the arm upon which the marking indication means is mounted is rotatable about the spindle axis, and is provided with indexing means to hold the arm in a series of angular positions, so that the marking indication device can be used in each position on the pipe along a locus defined by<Desc/Clms Page number 10>rotation of the arm and positioning of the marking indication means radially on the arm.
- 4. A device according to any preceding claim, wherein the marking indication means comprises a laser.
- 5. A device according to claim 4, wherein the laser is a red laser which produces a red spot light on a target such as a workpiece to be marked out.
- 6. A device according to claim 4, wherein the laser is a cutting or ablation laser, which is arranged to score a line along the desired locus.
- 7. A device according to any one of claims 1 to 3, wherein the marking indication means comprises a cutting tool which is moved along the locus to effect the desired cut.
- 8. A device according to claim 2, wherein the saddle comprises an arcuate member having a slot there-along which provides a guide for movement of the spindle through a series of positions defined by the slot wherein the spindle always extends radially with the locus of the end of the spindle at a point at the centre of curvature of the saddle.
- 9. A device according to claim 8, wherein the saddle is connected to further support means adapted to be mounted on the first member, said first member being either a pipe or a flat part.<Desc/Clms Page number 11>
- 10. A device according to claim 9, wherein said further support means is adapted for seating on a pipe and comprises an arcuate saddle which has a circumferential slot in which a part connected to the first saddle is mounted so that the first saddle can be fitted to extend radially with respect to the axis of the second saddle to enable the marking indication means to define a locus of a joint for pipes at a non-perpendicular angle to produce a cut aperture in the pipe in the form of a suitably elongated ellipse.
- 11. A device according to claim 10 wherein the support means or second saddle also includes means for securing the support means to the first member.
- 12. A device according to claim 11 wherein said securing means comprises an electromagnetic clamp which can be deenergised to release the support means from the first member.
- 13. A device according to claim 10 wherein the marking indication means, in addition to being slidable along the arm, is arranged to rotate along an axis perpendicular to the arm so as to describe an arc in the plane of the arm.
- 14. A marking out device substantially as herein before described, with reference to and as illustrated in the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0128003A GB2382409B (en) | 2001-11-22 | 2001-11-22 | Marking out or cutting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0128003A GB2382409B (en) | 2001-11-22 | 2001-11-22 | Marking out or cutting device |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0128003D0 GB0128003D0 (en) | 2002-01-16 |
GB2382409A true GB2382409A (en) | 2003-05-28 |
GB2382409B GB2382409B (en) | 2005-07-06 |
Family
ID=9926251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0128003A Expired - Fee Related GB2382409B (en) | 2001-11-22 | 2001-11-22 | Marking out or cutting device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2382409B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103817679A (en) * | 2014-03-19 | 2014-05-28 | 四川西林石油物资装备有限公司 | Petroleum pipeline lifting marking device convenient to move |
CN105773055A (en) * | 2016-05-23 | 2016-07-20 | 中国冶集团有限公司 | Pipeline axis setting-out device and setting-out method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111896365B (en) * | 2020-07-08 | 2022-01-11 | 天津大学 | Test method integrating derusting, measuring and calibrating in submarine pipeline test |
CN112025667B (en) * | 2020-09-08 | 2023-05-12 | 江南造船(集团)有限责任公司 | Auxiliary scribing tool and scribing method for outer plate |
CN116972725B (en) * | 2023-09-22 | 2024-01-16 | 河南工学院 | Large-sized workpiece horizontal side bending detection device and detection method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4265430A (en) * | 1976-11-24 | 1981-05-05 | Eriksson Bengt O | Device for marking and/or cutting pipes |
FR2575689A1 (en) * | 1985-01-09 | 1986-07-11 | Martin Serge | Instrument for tracing the intersection of two pipes |
SU1727987A1 (en) * | 1990-02-21 | 1992-04-23 | Vokhmyanin Vladislav G | Device for marking conjugated pipes |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3238623A (en) * | 1964-08-05 | 1966-03-08 | Calvin W Lee | Pipe joint marking tool |
US3835541A (en) * | 1973-05-21 | 1974-09-17 | L Whitworth | Ellipsoid marker and template tracer |
US4367593A (en) * | 1981-09-14 | 1983-01-11 | Whitworth Loraine T | Pattern drafting tool |
US5860220A (en) * | 1996-07-19 | 1999-01-19 | Gerd; John A. | Apparatus and method for marking cut lines on pipe to form a variety of pipe fittings and bends |
-
2001
- 2001-11-22 GB GB0128003A patent/GB2382409B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4265430A (en) * | 1976-11-24 | 1981-05-05 | Eriksson Bengt O | Device for marking and/or cutting pipes |
FR2575689A1 (en) * | 1985-01-09 | 1986-07-11 | Martin Serge | Instrument for tracing the intersection of two pipes |
SU1727987A1 (en) * | 1990-02-21 | 1992-04-23 | Vokhmyanin Vladislav G | Device for marking conjugated pipes |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103817679A (en) * | 2014-03-19 | 2014-05-28 | 四川西林石油物资装备有限公司 | Petroleum pipeline lifting marking device convenient to move |
CN105773055A (en) * | 2016-05-23 | 2016-07-20 | 中国冶集团有限公司 | Pipeline axis setting-out device and setting-out method |
CN105773055B (en) * | 2016-05-23 | 2017-12-01 | 中国一冶集团有限公司 | Conduit axis actinobacillus device and line-putting method |
Also Published As
Publication number | Publication date |
---|---|
GB0128003D0 (en) | 2002-01-16 |
GB2382409B (en) | 2005-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20071122 |