EP0131356A1 - Vorrichtung zur Materialabtragung von einem Werkstück - Google Patents

Vorrichtung zur Materialabtragung von einem Werkstück Download PDF

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Publication number
EP0131356A1
EP0131356A1 EP84303236A EP84303236A EP0131356A1 EP 0131356 A1 EP0131356 A1 EP 0131356A1 EP 84303236 A EP84303236 A EP 84303236A EP 84303236 A EP84303236 A EP 84303236A EP 0131356 A1 EP0131356 A1 EP 0131356A1
Authority
EP
European Patent Office
Prior art keywords
band
workpiece
working portion
removing means
teeth
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.)
Withdrawn
Application number
EP84303236A
Other languages
English (en)
French (fr)
Inventor
Graham David Fuller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pandrol Ltd
Original Assignee
Pandrol Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pandrol Ltd filed Critical Pandrol Ltd
Publication of EP0131356A1 publication Critical patent/EP0131356A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E01B31/15—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by planing or filing

Definitions

  • apparatus for removing material from a workpiece comprising an endless band incorporating material-removing means, advancing means for advancing the band lengthwise continuously in the same direction, and urging means extending along a working portion of the band for urging the material-removing means in one direction normal to said working portion of the band, in order to cause the material-removing means to remove material from a workpiece.
  • the endless band, the advancing means and the urging means are supported on a chassis from which extend two spaced-apart projections which are intended to contact the workpiece at two locations at opposite ends of a path to be traversed by the material-removing means, the apparatus being such that material can be removed thereby from the workpiece until the surface of the workpiece follows a desired, for example straight, path from immediately adjacent one of said locations to immediately adjacent the other.
  • the apparatus further comprises guide means extending along said working portion of the band for preventing the material-removing means in said working portion from moving too far in said direction when they do not contact a workpiece.
  • the material-removing means may be abrasive material but in the examples described below it is elongate teeth, which may be similar in cross-section to teeth of a file, parallel to one another but not necessarily straight, with their length direction perpendicular to or inclined by less than 90° to the length direction of the band.
  • the apparatus may be used for removing surplus material from a wide range of workpieces, for example from a welded joint between plates on the side of a ship, and the material may be removed along straight or curved lines.
  • the examples described below are of a portable machine which can be carried along a railway track by two men and used to remove surplus material over a length of about 1 metre of rail including a welded joint between two lengths of rail, in order to ensure a smoother passage of train wheels over the joint.
  • the guide means if present in the apparatus, prevent the material-removing means from undesirably removing material from the rail when the working portion of the band is above the rail and gravity tends to cause it to sag and it is being driven by the advancing means. The sagging is countered by the guide means.
  • the machine illustrated includes an endless band 1 in the form of a chain of devices 2A and 2B which alternate with one another along the chain and are articulated chain elements.
  • Each chain element comprises two planar and parallel side parts 2C held together by a bridging piece 2 D which is integral with the two side parts, the distance between the side parts 2C being less in the case of the chain elements 2A than it is in the case of the chain elements 2B.
  • Each chain element 2A has its opposite extremities extending into the extremities of two adjoining chain elements 2B and pivotally connected thereto by pins 3 each of which extends through the two side parts 2C of two chain elements and extends at both ends beyond the chain elements.
  • a roller 4 which can turn freely with respect to the pin.
  • Each bridging piece is formed with a hole 8 through which freely passes the shank of a screw 10 which is screwed into a hole 9 in a cutting member 6 which is formed with parallel teeth 7.
  • the teeth have a length direction which is perpendicular to the length direction of the band and they are shaped rather like the teeth of a file.
  • Figures 1 and 4 show two alternative forms for the rear face of the cutting member 6, opposite to the face formed with the teeth, the cutting member 6 shown in Figure 4 having a recess in its rear face into which a bridging piece 2D fits.
  • Figure 7 shows a cutting member 6 with a similar recess in its rear face but here the teeth 7 have their length direction inclined by much less than 90°, in fact about 45 0 , to the length direction of the band and the cutting member 6 has the teeth over only a narrow central section, less than 1 cm. wide, of the front face of the cutting member.
  • the band passes around two sprocket wheels 11, at least one of which is driven manually or by a prime mover.
  • the teeth on the sprocket wheels project into the spaces between the side parts 2C of the chain elements and drive the band lengthwise, continuously in the same direction.
  • the band has a working portion lA which always advances in one direction and a return portion 1B which always travels in the opposite direction.
  • Urging means in the form of a bar 14A, depending from a block 14, extend along the working portion lA of the band and urge the chain elements therein, and therefore the cutting members 6 in the working portion 1A of the band, to move in one direction normal to the working portion of the band, i.e. vertically downwardly, considering Figure 1.
  • force is applied to the block 14, for example by a manually operated lever or hydraulically or by applied weights, or the weight of the block itself might suffice.
  • This causes the bar 14A to press on the rollers 4 in the working portion of the band, which in turn causes the teeth 7 to remove surplus material from any workpiece which they encounter.
  • On the under side of the bar there could be a strip which is replaced when worn.
  • the ends of the pins 3 project into grooves 12 in guide rails 13 which extend along the working portion lA of the band.
  • the arrangement may be such that when one of the cutting members 6 is running along a workpiece, in contact with a protrusion on it and removing surplus material from the protrusion, its associated pins 3 are not in contact with the guide rails but the pins associated with other cutting members 6, which are in the working portion 1A of the band but not in contact with the workpiece because the latter has no protrusion here, are in contact with the guide rails on the lower sides of the recesses 12.
  • the ends of all the pins 3 in the working portion lA of the band engage the guide rails, on the lower sides of the recesses 12.
  • the guide rails both when material is being removed from the workpiece and when the machine is lifted from the workpiece, prevent the chain elements from moving too far in the direction in which they are urged by the bar 14A, i.e. vertically downwardly in the illustrated example, so as to cause the working portion of the band 1 to sag excessively.
  • the pins 3 engage the guide rails there could be strips which are replaced when worn.
  • Guide rails could guide the band 1 also in its return portion 1B.
  • the shape of the lower face of the bar 14A and the shape of the guide rails on the lower sides of the recesses 12 determine the shape, for example planar, of the surface produced on the workpiece.
  • the extent to which the lower face of the bar 14A is higher than the lower sides of the recesses 12 is critical and should be such as to enable the inclination of each device 2A and 2B in the working portion of the band, with respect to the direction in which the working portion of the band advances, to change periodically, producing a rippling effect. It appears to be advantageous to make the teeth 7 at the rear end of each cutting member 6 project further from the plane containing the axes of its two pins 3 than do the teeth 7 at the front end. It may also be advantageous to provide teeth on one of the longer vertical sides (considering Figure 3) of each cutting member 6.
  • Figure 8 illustrates an arrangement for tensioning the band.
  • a movable block 20 supports a shaft 21 on which one of the pinions 11 is mounted and this block 20 is urged away from the other pinion 11 by dish springs 22 which act on a plate 23 which is fixed on one end of a rod 24 which passes freely through a fixed member 25 and has its other end fixed to the block 20.
  • the parallel teeth 7 could be formed on the bridging pieces 2D instead of on separate members 6 secured to the bridging pieces. Either way, considering Figure 2, there should be no teeth to the left of the axis of the left-hand roller 4 or to the right of the axis of the right-hand roller 4, whereby as the chain elements run on and off the pinions 11 their consequent tilting does not result in the teeth carried by them cutting undesirably deeply into the workpiece.
  • the teeth are preferably cleared of swarf in the return portion lB of the band and preferably cutting oil is applied to them.
  • FIG 9 shows diagrammatically a chassis 28 on which all the parts shown in Figures 1 to 4 are supported, the chassis having carrying handles 29 at opposite ends and two rotund and possibly hemispherical projections 30 and 31 near opposite ends, as near to each other as possible having regard to the fact that they must not be engaged by the teeth 7.
  • the lower face of the bar 14A is planar and so are the surfaces of the guide rails 13 on the lower sides of the recesses 12.
  • the machine shown in Figures 1 to 4, or, preferably, incorporating the cutting member shown in Figure 7, is lowered by two men, with the band 1 already running, until the projection 30 contacts the surface of one of the lengths of rail.
  • the projection 31 cannot immediately contact the other length of rail because an upward protrusion on the rail at the joint prevents this.
  • the teeth 7 remove surplus material from a limited part of the rail cross-section, until the projection 31 contacts the other length of rail, leaving a planar facet along the line 32, about a metre long and preferably less than 1 cm.
  • the illustrated machine can also be used to remove other high spots on rails but is not intended to be used to re-profile the whole of any length of rail.
  • Figures 5 and 6 show part of a band 1 comprising a series of chain elements 2E each of which is a member formed with a tooth 16 on one side, to engage the teeth of the pinions 11 in order to drive the band, and teeth 7 on the opposite side to cut the workpiece, although these teeth could be on a detachable cutting member as shown in any of Figures 1, 4 and 7.
  • Link members 17 are each pivotally connected by pins 3 to two adjacent chain elements 2E, the ends of the pins 3 projecting beyond the link members to engage guide rails 13 to prevent sagging of the chain.
  • the members 2E are urged towards the workpiece by force applied to a block 14 having two projections 14B depending from it and extending along the entire working portion 1A of the band, these projections engaging the link members 17.
EP84303236A 1983-05-12 1984-05-11 Vorrichtung zur Materialabtragung von einem Werkstück Withdrawn EP0131356A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838313101A GB8313101D0 (en) 1983-05-12 1983-05-12 Machine for abrading rigid material to profile
GB8313101 1983-05-12

Publications (1)

Publication Number Publication Date
EP0131356A1 true EP0131356A1 (de) 1985-01-16

Family

ID=10542613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303236A Withdrawn EP0131356A1 (de) 1983-05-12 1984-05-11 Vorrichtung zur Materialabtragung von einem Werkstück

Country Status (5)

Country Link
EP (1) EP0131356A1 (de)
JP (1) JPS59209717A (de)
AU (1) AU2785384A (de)
GB (1) GB8313101D0 (de)
ZA (1) ZA843464B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013040185A1 (en) * 2011-09-14 2013-03-21 Erico International Corporation Insulated joint slotter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE168741C (de) *
DE600356C (de) * 1932-11-26 1934-07-20 Paul Rueggeberg Feilmaschine fuer geschweisste Schienenstoesse
US2114454A (en) * 1938-04-19 Grinding machine
DD135632A5 (de) * 1977-02-21 1979-05-16 Plasser Bahnbaumasch Franz Fahrbare schienenschleifmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE168741C (de) *
US2114454A (en) * 1938-04-19 Grinding machine
DE600356C (de) * 1932-11-26 1934-07-20 Paul Rueggeberg Feilmaschine fuer geschweisste Schienenstoesse
DD135632A5 (de) * 1977-02-21 1979-05-16 Plasser Bahnbaumasch Franz Fahrbare schienenschleifmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013040185A1 (en) * 2011-09-14 2013-03-21 Erico International Corporation Insulated joint slotter

Also Published As

Publication number Publication date
ZA843464B (en) 1984-12-24
GB8313101D0 (en) 1983-06-15
JPS59209717A (ja) 1984-11-28
AU2785384A (en) 1984-11-15

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE FR GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850917

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FULLER, GRAHAM DAVID