SE468080B - Procedure for treating surfaces of workpieces using abrasive grains which are resiliently applied - Google Patents

Procedure for treating surfaces of workpieces using abrasive grains which are resiliently applied

Info

Publication number
SE468080B
SE468080B SE9100187A SE9100187A SE468080B SE 468080 B SE468080 B SE 468080B SE 9100187 A SE9100187 A SE 9100187A SE 9100187 A SE9100187 A SE 9100187A SE 468080 B SE468080 B SE 468080B
Authority
SE
Sweden
Prior art keywords
abrasive grains
workpieces
procedure
boards
sheets
Prior art date
Application number
SE9100187A
Other languages
Swedish (sv)
Other versions
SE9100187L (en
SE9100187D0 (en
Inventor
Morgan Ryden
Original Assignee
Morgan Ryden
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 Morgan Ryden filed Critical Morgan Ryden
Priority to SE9100187A priority Critical patent/SE468080B/en
Publication of SE9100187D0 publication Critical patent/SE9100187D0/en
Publication of SE9100187L publication Critical patent/SE9100187L/en
Publication of SE468080B publication Critical patent/SE468080B/en

Links

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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/28—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding wood
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/30—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding plastics
    • 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
    • B24B9/18—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 wood
    • 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
    • B24B9/20—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 plastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

Workpieces of a non-metallic kind, such as particle boards, fibre boards and masonite boards, are surface- treated using discs, sheets and leaves in which abrasive grain is immovably applied and in which the discs are rotated about an axis perpendicular to the surface which is to be treated. In order to increase the degree of fineness of the treatment, the abrasive grains are arranged resiliently on the said sheet, leaf or disc. <IMAGE>

Description

l0 15 20 25 30 468 080 Vidare bör det roterande underlaget för slipkornen bringas till anliggning mot yta som skall bearbetas med skärkraft liggande mellan 0,59 och l,O4 (N/mm). 10 15 20 25 30 468 080 Furthermore, the rotating base for the abrasive grains should be brought into contact with the surface to be machined with a cutting force of between 0.59 and 1.04 (N / mm).

För att bearbetningen skall bli så jämn som möjligt vid slipning upprättas ett visst förhållande mellan rotations- tal och tryck. Detta kan ske med hjälp av lämplig servo- arrangemang.In order for the machining to be as even as possible during grinding, a certain ratio is established between rotational speed and pressure. This can be done with the help of a suitable servo arrangement.

Medelst föreliggande uppfinning nedbringas antalet slip- ningar och antalet ytbehandling med lack eller färg till ett absolut minimum.By means of the present invention, the number of sandings and the number of surface treatments with varnish or paint are reduced to an absolute minimum.

En stor fördel vinnes med föreliggande uppfinning där- igenom att stoffmängden reduceras pá ett påtagligt sätt.A great advantage is gained with the present invention in that the amount of substance is reduced in a marked manner.

Uppfinningen finner särskild användning vid bearbetning av kanter till skivor av material som nämnts i det före- gående.The invention finds particular use in the machining of edges into sheets of material mentioned above.

Ytterligare kännetecken gällande för föreliggande upp- finning framgår av efterföljande patentkrav. Ett utfö- ringsexempel av uppfinningen visas pá bifogad ritning där Fig l visar en drivanordning för en slipskiva sedd från sidan och där arbetsstyckets (operatets) placering framgår och där Fig 2 visar samma anordning sedd uppifrån.Additional features applicable to the present invention appear from the appended claims. An embodiment of the invention is shown in the accompanying drawing where Fig. 1 shows a drive device for a grinding wheel seen from the side and where the location of the workpiece (operation) is shown and where Fig. 2 shows the same device seen from above.

I figurerna finns ett stativ l som är rörligt till och från ett arbetsstycke (operat) 2 och då till och från dess kantyta. På stativet är anordnat en elektrisk motor 7 som med hjälp av en transmission 9 driver en slipskiva 8. Slipskivan 8 är längs sin omkretskant försedd med slipkorn som är så applicerade att kornen är fjädrande till och från i radiell riktning. Slipskivan 8 är lagrad 'ax l0 15 20 25 30 3 468 080 i ett hus som sitter vid stativet l. En ansättningsmotor 5 är anordnad som via ett transmissionshus 6 påverkar en skruvaxel 3. Skruvaxeln 3 samverkar med en mutter 4 fäst vid stativet.In the figures there is a stand 1 which is movable to and from a workpiece (operated) 2 and then to and from its edge surface. An electric motor 7 is arranged on the frame, which by means of a transmission 9 drives a grinding wheel 8. The grinding wheel 8 is provided along its circumferential edge with grinding grains which are applied so that the grains are resilient to and from in the radial direction. The grinding wheel 8 is mounted 'axis 10 15 20 25 30 3 468 080 in a housing which is located at the frame 1. A mounting motor 5 is arranged which via a transmission housing 6 acts on a screw shaft 3. The screw shaft 3 cooperates with a nut 4 attached to the frame.

Den beskrivna anordningen fungerar på följande sätt.The described device works in the following way.

Stativet l med slipskiva 8 och motor 7 ansättes mot kan- ten till det arbetsstycke (operat) 2 som skall bearbetas.The stand 1 with grinding wheel 8 and motor 7 is attached to the edge of the workpiece (operat) 2 to be machined.

Anliggningstrycket regleras med hjälp av motorn 5 som med hjälp av skruven 3 och muttern 4 åstadkommer önskad normalkraft. Motorn 7 gives sedan ett lämpligt varv- tal så att förutbestämd skärkraft uppnås i förening med avsedd skärhastighet. Rotationshastigheten hos motorn 7, dvs dess varvtal, påverkas fortlöpande liksom normal- kraften. Den senare genom anordningen bestående av maskin- elementen 3,4,5 och 6.The contact pressure is regulated by means of the motor 5 which, with the aid of the screw 3 and the nut 4, produces the desired normal force. The motor 7 is then given a suitable speed so that a predetermined cutting force is achieved in conjunction with the intended cutting speed. The rotational speed of the motor 7, ie its speed, is continuously affected as well as the normal force. The latter through the device consisting of machine elements 3,4,5 and 6.

På ritningarna àskádliggöres också en linjärslid 10 som möjliggör rätlinjig förflyttning av stativet, förslagsvis rätvinkligt mot arbetsstycket 2.The drawings also illustrate a linear slide 10 which enables rectilinear movement of the stand, preferably at right angles to the workpiece 2.

Skärhastigheten hos slipskivan 8 avpassas att ligga mellan 27,5 och 32,5 (m/sek). Detta åstadkommes automatiskt genom att en med linjärsliden 10 förbunden kuggstång påverkar ett i stativet lagrat kugghjul. Den på detta sätt åstadkomna roterande rörelsen styr en potentiometer som påverkar en frekvensomvandlare, vilken i sin tur reglerar driunotorns 7 varvtal.The cutting speed of the grinding wheel 8 is adapted to be between 27.5 and 32.5 (m / sec). This is achieved automatically by a gear connected to the linear slide 10 actuating a gear wheel mounted in the frame. The rotational movement produced in this way controls a potentiometer which acts on a frequency converter, which in turn regulates the speed of the driunotor 7.

Skärtrycket hos slipskivan 8 regleras också automatiskt, vilket tillgár på så sätt att driunotorns 7 tomgångsström avläses, varefter slipskivan belastas till dess att avsedd strömstyrka uppnås. Drivmotorns belastningsström avläses.The cutting pressure of the grinding wheel 8 is also regulated automatically, which is done in such a way that the idle current of the drive motor 7 is read, after which the grinding wheel is loaded until the intended current is reached. The load current of the drive motor is read.

Skillnaden mellan strömtillförseln vid tomgång och vid belastning utnyttjas. När ärvärdet, som denna strömskill- nad utgör, förändras ombesörjer en givare att motorn 5 träder i funktion för att reglera skärtrycket som är ett börvärde. 10 468 080 4 Nämnda strömskillnad är inte alltid densamma beröende på variationer dels hos den produkt 2 som skall bear- betas, dels på slipskivans struktur. Man får således bestämma skärtrycket för varje produktparti eller vid .q byte av slipskiva.The difference between the power supply at idle and at load is used. When the actual value, which this current difference constitutes, changes, a sensor ensures that the motor 5 comes into operation to regulate the cutting pressure, which is a setpoint. 10 468 080 4 Said current difference is not always the same due to variations partly in the product 2 to be machined and partly in the structure of the grinding wheel. You must thus determine the cutting pressure for each product batch or when changing the grinding wheel.

Anläggningen enligt figurerna i ritningen är försedd med ett för ändamålet utvecklat elektroniskt styrsystem som uppfyller ställda krav på att reglera skärhastighet och skärtryck, men som även övervakar andra funktioner.The system according to the figures in the drawing is equipped with an electronic control system developed for the purpose, which meets the requirements for regulating cutting speed and cutting pressure, but which also monitors other functions.

T ex stoppas arbetsstyckets (operatets) frammatning, när slipskivan 8 blivit förbrukad. Dessförinnan signa- lerar styrsystemet om ett förestående avbrott. Hastig- heten för arbetsstyckets (operatets) 2 frammatning kan vara omkring 10 m/min.For example, the feed of the workpiece (operative) is stopped when the grinding wheel 8 has been consumed. Before that, the control system signals an impending interruption. The speed of the workpiece (operation) 2 feed can be about 10 m / min.

Claims (1)

1. 0 15 PATENTKRAV Förfaringssätt för att bearbeta ytor till ämnen som kan bestå av skivor, av kroppar av olika form och därmed liknande, och som kan vara framställda pà ett sådant sätt, att produkter frán virke ingår såsom sågspån och träfibrer eller att ämnena utgöres av plast, bakelit och därmed liknande, varvid bearbetningen sker med hjälp av ark, blad eller skivor på vars yta slipkorn är fjäd- rande applicerade, k ä n n e t e c k n a t därav, att nämnda ark, skiva och blad bringas att rotera kring en axel vinkelrätt mot dess yta varvid skärhastigheten kommer att ligga mellan 27,5 och 32,5 m/sek och att nämnda ark, skiva eller blad anbringas till anliggning mot yta som skall bearbetas med en förutbestämd skärkraft som före- trädesvis har ett värde liggande mellan 0,59 och 1,04 N/mm.1. 0 15 CLAIMS Procedures for processing surfaces into substances which may consist of boards, of bodies of various shapes and the like, and which may be manufactured in such a way that products from wood are included such as sawdust and wood fibers or that the substances are constituted of plastics, bakelite and the like, the processing being carried out by means of sheets, sheets or discs on the surface of which abrasive grains are resiliently applied, characterized in that said sheet, disc and blade are caused to rotate about an axis perpendicular thereto surface where the cutting speed will be between 27.5 and 32.5 m / sec and that said sheet, disc or blade is applied to abutment against surface to be machined with a predetermined cutting force which preferably has a value ranging between 0.59 and 1.04 N / mm.
SE9100187A 1991-01-22 1991-01-22 Procedure for treating surfaces of workpieces using abrasive grains which are resiliently applied SE468080B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9100187A SE468080B (en) 1991-01-22 1991-01-22 Procedure for treating surfaces of workpieces using abrasive grains which are resiliently applied

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9100187A SE468080B (en) 1991-01-22 1991-01-22 Procedure for treating surfaces of workpieces using abrasive grains which are resiliently applied

Publications (3)

Publication Number Publication Date
SE9100187D0 SE9100187D0 (en) 1991-01-22
SE9100187L SE9100187L (en) 1992-07-23
SE468080B true SE468080B (en) 1992-11-02

Family

ID=20381679

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9100187A SE468080B (en) 1991-01-22 1991-01-22 Procedure for treating surfaces of workpieces using abrasive grains which are resiliently applied

Country Status (1)

Country Link
SE (1) SE468080B (en)

Also Published As

Publication number Publication date
SE9100187L (en) 1992-07-23
SE9100187D0 (en) 1991-01-22

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