US20130237135A1 - Disc sander for deburring and/or rounding of metal work pieces - Google Patents

Disc sander for deburring and/or rounding of metal work pieces Download PDF

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Publication number
US20130237135A1
US20130237135A1 US13/475,786 US201213475786A US2013237135A1 US 20130237135 A1 US20130237135 A1 US 20130237135A1 US 201213475786 A US201213475786 A US 201213475786A US 2013237135 A1 US2013237135 A1 US 2013237135A1
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US
United States
Prior art keywords
disc sander
disc
underside
intermediate plate
work piece
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.)
Abandoned
Application number
US13/475,786
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English (en)
Inventor
Friedrich von Schumann
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.)
JAKOB LOWER INH VON SCHUMANN & Co KG GmbH
Original Assignee
JAKOB LOWER INH VON SCHUMANN & Co KG GmbH
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Filing date
Publication date
Application filed by JAKOB LOWER INH VON SCHUMANN & Co KG GmbH filed Critical JAKOB LOWER INH VON SCHUMANN & Co KG GmbH
Assigned to JAKOB LOWER INH. VON SCHUMANN GMBH & CO. KG reassignment JAKOB LOWER INH. VON SCHUMANN GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VON SCHUMANN, FRIEDRICH
Publication of US20130237135A1 publication Critical patent/US20130237135A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades

Definitions

  • the present disclosure relates to a disc sander of a device for deburring and/or rounding of metal work pieces in a through-feed process.
  • a through-feed sanding machine for deburring or rounding of the edges of a metal work piece is known from German Patent DE 10 2008 052 564 A1, which mentions punched parts or laser-cut parts being worked.
  • This through-feed sanding machine features a conveyor belt for continuously conveying the work piece and at least one continuous belt sanding unit.
  • This belt sanding unit is disposed transversely to the conveying direction and extends across the entire width of the conveyor belt.
  • pressing rolls holding the work piece are provided ahead of and after the continuous sanding belt.
  • transversely disposed belt sanding unit does not optimally machine the edges of the work piece, which are oriented transversely to the feed direction.
  • a device for neatening plate-shaped, coated work pieces having at least one disc sander is known from European Patent EP 1 258 315 A2, which mentions the disc sander moving over the work piece transversely to its conveying direction.
  • the disc sander simultaneously rotates around its vertical axis so that a 360° machining of all the edges of the work piece are achieved irrespective of the outline of the work piece.
  • the work pieces must be held by the pressing rolls attached ahead of and after the disc sander, in order to prevent them from shifting.
  • this also means that work pieces smaller than the distance between the two pressing rolls cannot be machined or that work pieces so thin that they are not captured by the pressing rolls cannot be machined.
  • FIG. 1 a shows a schematic view of a device for deburring and rounding in a plan view at a first point in time.
  • FIG. 1 b shows the device according to FIG. 1 a at a second point in time.
  • FIG. 1 c shows the device according to FIG. 1 a at a third point in time.
  • FIG. 2 shows an alternate device for deburring and rounding.
  • FIG. 3 a shows the device according to FIG. 1 a in a front view with an apposed pressing roll.
  • FIG. 3 b shows the device according to FIG. 3 a with a lifted pressing roll.
  • FIG. 4 shows a first embodiment of a disc sander according to the present disclosure for a device according to FIG. 1 a , along line IV in FIG. 3 a.
  • FIG. 5 shows a second embodiment of a disc sander according to the present disclosure.
  • FIG. 6 shows a third embodiment of a disc sander according to the present disclosure.
  • FIG. 7 shows a fourth embodiment of a disc sander according to the present disclosure.
  • Disclosed herein is a disc sander of a device for deburring and/or rounding of metal work pieces in a through-feed process.
  • One object of the present disclosure is to develop a device with which small and thin work pieces can also be machined efficiently.
  • a disc sander such as described and claimed herein is proposed as a technical solution to this object.
  • Advantageous embodiments of this disc sander can be taken from the sub-claims.
  • a disc sander configured according to this technical teaching is advantageous in that due to the sanding means being held in a resilient manner, a certain force is applied to the work piece, which presses the work piece onto its support, thus preventing a shifting. An interaction between the sanding force that is required for sanding and acts on the work piece and the restoring force acting through the spring system onto the work piece thus occurs.
  • the sanding means When a big burr is machined by the disc sander, the sanding means is pressed in by it in a particularly strong manner. This occurs against the spring force, so that in this case, a particularly strong spring return force, which in turn presses the work piece against the support and fixes it there, acts on the sanding means. Since, most of the time, strong transverse forces also occur with particularly big burrs, they can be well compensated for via the sanding means held in a resilient manner, with the result that the work piece is held on its support without shifting. If a comparatively smaller burr is to be debarred, the transverse forces will be less, so that in this case less spring return forces are sufficient in order to hold the work piece.
  • the spring element is formed by a dimensionally stable, elastic layer made of a synthetic or natural material and extends along the entire underside of the disc sander, the spring element resting planarly against the underside of the disc sander. It has thereby proven advantageous to use a dimensionally stable and yet elastic foam rubber, sponge rubber or EPDM rubber or another type of synthetic material.
  • a corresponding spring element is configured on the entire underside of the disc sander, so that a corresponding pressing force always acts on the work piece when the work piece is being machined by the sanding means.
  • a circulating chamfer is configured at the lower edge of the disc sander so that the work piece is first captured by the disc sander in the area of the chamfer. This is advantageous in that the forces coming from the spring-loaded sanding means progressively act on the work piece, so that the work piece is uniformly captured and pressed against the support.
  • a rigid intermediate plate is provided between the spring element and the sanding means.
  • This rigid intermediate plate prevents the resiliently carried sanding means from being pressed in at certain points, the consequence being that all the protruding burrs of the work piece that are to be removed, are reliably removed.
  • Another advantage is that the forces impinged onto the spring element are distributed across a large area and correspondingly exert a restoring force across a large area of the intermediate plate and thus of the sanding means, so that a particularly great sanding force acts on the burr, while only negligible forces act onto the remaining surfaces of the work piece. As a result, a much more thorough and much quicker deburring is thus achieved without machining the remaining surface of the work piece.
  • a circulating chamfer is configured at the lower edge of the intermediate plate, in order to allow for the work piece to be uniformly captured by the disc sander and pressed onto the support.
  • the spring element is configured as a disc sander, a rigid intermediate plate, on the underside of which the sanding means can be mounted, being attached to the disc sander.
  • the spring force is exerted by the disc springs.
  • the disc sander is held by at least one axially acting helix coiled spring.
  • the sanding means is hereby directly attached to the underside of the disc sander, the result being that the sanding means is held by the helix coiled spring in a resilient manner.
  • the entire disc sander can thereby be shifted in a resilient manner orthogonally relative to the work piece.
  • Each of the three embodiments of the disc sander according to the present disclosure shown here whether they are achieved by means of a helix coiled spring, a disc spring or a dimensionally stable, elastic layer made of a synthetic or natural material, has the advantage that a particularly great sanding force is exerted onto the burr of the work piece or on the edge of the work piece to be rounded, because the burr at first shifts the resiliently held sanding means in opposition to the spring force, so that the spring force supports the sanding process.
  • this furthermore has the advantage that the sanding means primarily rests on the burr or on the point of the work piece to be machined but not on the other surfaces.
  • a rapid deburring or machining can hereby be achieved without sanding the remaining work piece. It has also turned out that much lower temperatures hereby occur, so that wear of the sanding means is reduced.
  • FIGS. 1 , 2 and 3 a device for deburring and/or rounding metal work pieces, more specifically punched or laser-cut parts is schematically shown, in which the work pieces are machined in a continuous method.
  • This device comprises a continuously running conveyor belt 10 and a mounting bridge 12 to which four disc sanders 14 are attached.
  • the disc sanders 14 rotate around their vertical axis and feature a planar sanding means, e.g. a sandpaper on their planar underside.
  • the disc sanders 14 can be moved, as suspended to the mounting bridge 12 , transversely to the conveying direction across the entire width of the conveyor belt 10 . Both outer disc sanders 14 thereby end up beyond the conveyor belt 10 .
  • Such a device for deburring and/or rounding of metal work pieces, more specifically of punched and laser-cut parts, in a through-feed process comprises a conveyor belt 10 for continuously conveying the work pieces 16 and at least one, and in some examples four, disc sanders 14 rotating around their respective vertical axes, sanding means being attached on its underside facing the work piece 16 , the at least one disc sander being oscillatably held transversely to the motion direction of the conveyor belt and the disc sander 16 being held so that it is movable up to the right and/or the left of the conveyor belt.
  • This example has the advantage that a uniform wear of the sanding means occurs because the sanding means of each disc sander is used for approximately the same amount of time.
  • Respectively one pressing roll 18 is provided ahead of and after the disc sanders 14 , in the conveying direction of the work piece 16 .
  • the pressing roll 18 presses the work piece 16 onto the conveyor belt so that the transverse forces appearing during deburring or rounding cannot displace the work piece 16 .
  • the height of the pressure rolls 18 is adjustable independently from the at least one disc sander 14 .
  • the sanding pressure of the disc sander 14 as well as the contact pressure of the pressing rolls 18 can thus be adjusted according to the requirements of the work piece.
  • the heights of all the pressing rolls 18 are adjustable together but independently from the at least one disc sander 14 .
  • the height of the pressing rolls 18 can hereby be adjusted according to the thickness of the work piece and at the same time the adjustment can be implemented in a single operation.
  • the height of the disc sanders and thus their sanding pressure on the work piece can be independently adjusted in an appropriate manner.
  • the disc sanders are attached to the mounting bridge by means of a helix coiled spring, so that the disc sander is movable in the direction of its vertical axis by up to 4 mm, preferably by up to 2 mm.
  • the disc sander can hereby be adjusted to the thickness of the respective work piece, and on the other hand the sanding pressure onto the work piece can also be adjusted in the desired manner.
  • the device shown in FIG. 2 differs from the devices shown in FIGS. 1 and 3 in that two disc sanders 14 are shown here.
  • FIG. 4 shows a first embodiment of the disc sander 14 according to the present disclosure, on the underside 20 of which a sanding means 22 is held in a resilient manner.
  • This sanding means 22 extends across the entire surface of the underside 20 and is held there by means of a hook-and-loop connection 24 (e.g., a Velcro connection).
  • This hook-and-loop connection 24 is slightly flexible and resilient, so that the sanding means 22 is held on the disc sander 14 in a resilient manner.
  • a circulating chamfer 26 is configured on the edge of the underside 20 of the disc sander 14 , this chamfer 26 taking up an angle of 22.5° relative to the vertical axis of the disc sander. In other embodiments, this angle can also amount to between 10° and 45°.
  • the work piece 16 can be uniformly captured with this chamfer 26 and uniformly pressed onto the underlying conveyor belt, so that a shifting of the work piece during machining is prevented.
  • FIG. 5 shows another embodiment of the disc sander according to the present disclosure.
  • a spring element 128 is applied across a great area onto the underside 120 of the disc sander 114 , and the spring element is made of foam rubber, sponge rubber, EPDM or another soft synthetic material.
  • a hook-and-loop connection 124 on which the sanding means 122 is held across a great surface, is then also provided on the underside of the spring element 128 .
  • a circulating chamfer 126 is configured on the lower edge of the underside 120 of the disc sander 114 , as was the case in a prior example embodiment.
  • FIG. 6 Another alternative embodiment shown in FIG. 6 , which differs from the embodiment shown in FIG. 5 in that a rigid intermediate plate 130 , which also has a circulating chamfer 132 at its outer edge, is disposed between the spring element 128 and the sanding means 122 .
  • This chamfer 132 on the intermediate plate 130 corresponds to the chamfer 126 of the disc sander 114 .
  • a spring element 228 to which a rigid intermediate plate 230 is attached, formed by six disc springs 234 , is disposed on the underside 220 of the disc sander 214 .
  • a sanding means 222 is also held on this intermediate plate 230 by means of a hook-and-loop connection 224 .
  • a chamfer 232 is also formed on the outer edge of the intermediate plate 230 , in order to be able to easily and uniformly capture the work piece.
  • the sanding means described here is a planar sandpaper, which is held to a great surface of the underside of the disc sander.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US13/475,786 2012-03-07 2012-05-18 Disc sander for deburring and/or rounding of metal work pieces Abandoned US20130237135A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012002267U DE202012002267U1 (de) 2012-03-07 2012-03-07 Tellerschleifer einer Vorrichtung zum Entgraten und/oder Verrunden von metallenen Werkstücken im Durchlaufverfahren
DE202012002267.9 2012-03-07

Publications (1)

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US (1) US20130237135A1 (de)
DE (1) DE202012002267U1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289992A (zh) * 2014-09-29 2015-01-21 四川氟迪新能源有限公司 橡胶磨边机的磨边装置
CN104551907A (zh) * 2014-02-25 2015-04-29 松泰精技(深圳)有限公司 自动去毛刺机的输送带产品吸附结构
US9272382B2 (en) 2013-10-08 2016-03-01 The Boeing Company Automated sanding system
CN106312726A (zh) * 2015-06-29 2017-01-11 宝山钢铁股份有限公司 用于冷轧精整机组的修边装置
CN107932241A (zh) * 2017-12-22 2018-04-20 苏州苏铸重工有限公司 一种多规格铸件打磨装置
CN107953183A (zh) * 2017-12-22 2018-04-24 苏州苏铸重工有限公司 一种吸尘式铸件浮动打磨机构
CN116604425A (zh) * 2023-07-19 2023-08-18 常州埃森诺精密模具有限公司 一种高强度太阳能光伏支撑连接件生产装置及生产工艺

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012011628U1 (de) 2012-12-05 2013-01-08 Siepe Gmbh & Co. Kg Vorrichtung zum Entgraten von vorzugsweise runden Werkstücken aus Metall, insbesondere Leichtmetallfelgen
DE102017122141A1 (de) 2017-09-25 2019-03-28 Jakob Löwer Inh. von Schumann GmbH & Co. KG Vorrichtung zur Erzeugung eines undefinierten Finishes auf einer Oberfläche eines metallenen Werkstückes im Durchlaufverfahren
CN110153820B (zh) * 2018-01-15 2020-12-22 日照金泰机械制造有限公司 一种高效导轨专用磨床及磨削方法
CN109434601A (zh) * 2018-11-12 2019-03-08 湖州高源金机械有限公司 一种用于金属表面毛刺去除的处理设备及其处理方法
CN114536138A (zh) * 2022-02-10 2022-05-27 番禺珠江钢管（连云港）有限公司 一种基于钢管制造的毛刺打磨装置
CN116900862B (zh) * 2023-09-07 2023-11-14 山东佰鑫达钢品科技有限公司 一种岩棉板边缘修整装置

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DE20108243U1 (de) 2001-05-16 2001-07-26 Ingenieur Buero Gottschild Gmb Vorrichtung zum Versäubern von plattenförmigen, beschichteten Werkstücken
DE102008052564A1 (de) 2008-10-21 2010-04-22 Jakob Löwer Inh. von Schumann GmbH & Co. KG Durchlaufschleifmaschine zur Metallbearbeitung

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US3522681A (en) * 1968-12-18 1970-08-04 Gerald Lampert Rubbing apparatus
US3653857A (en) * 1970-03-20 1972-04-04 Albert Field Abrading implement
US4328645A (en) * 1980-06-04 1982-05-11 The Boeing Company Multiple spindle flexible sanding head
US4534138A (en) * 1983-12-12 1985-08-13 Pangburn William E Nail file having flexible abrasive sheet
US5383309A (en) * 1992-07-09 1995-01-24 Norton Company Abrasive tool
US5390449A (en) * 1993-12-06 1995-02-21 Hilton; Harry Rotary sanding apparatus
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US5962120A (en) * 1995-12-04 1999-10-05 Minnesota Mining & Manufacturing Company Abrasive article back up pad with foam layer
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9272382B2 (en) 2013-10-08 2016-03-01 The Boeing Company Automated sanding system
CN104551907A (zh) * 2014-02-25 2015-04-29 松泰精技(深圳)有限公司 自动去毛刺机的输送带产品吸附结构
CN104289992A (zh) * 2014-09-29 2015-01-21 四川氟迪新能源有限公司 橡胶磨边机的磨边装置
CN106312726A (zh) * 2015-06-29 2017-01-11 宝山钢铁股份有限公司 用于冷轧精整机组的修边装置
CN107932241A (zh) * 2017-12-22 2018-04-20 苏州苏铸重工有限公司 一种多规格铸件打磨装置
CN107953183A (zh) * 2017-12-22 2018-04-24 苏州苏铸重工有限公司 一种吸尘式铸件浮动打磨机构
CN116604425A (zh) * 2023-07-19 2023-08-18 常州埃森诺精密模具有限公司 一种高强度太阳能光伏支撑连接件生产装置及生产工艺

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