EP0033562A2 - Corps destinés au traitement de tonnelage - Google Patents

Corps destinés au traitement de tonnelage Download PDF

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Publication number
EP0033562A2
EP0033562A2 EP81200072A EP81200072A EP0033562A2 EP 0033562 A2 EP0033562 A2 EP 0033562A2 EP 81200072 A EP81200072 A EP 81200072A EP 81200072 A EP81200072 A EP 81200072A EP 0033562 A2 EP0033562 A2 EP 0033562A2
Authority
EP
European Patent Office
Prior art keywords
bodies
machining
body according
groove
strand
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Withdrawn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
EP81200072A
Other languages
German (de)
English (en)
Other versions
EP0033562A3 (fr
Inventor
Jörg Dipl.-Ing. Sondermann
Günther Schwane
Dietrich Jänicke
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.)
Paul Rauschert & Co KG GmbH
GEA Group AG
Original Assignee
Paul Rauschert & Co KG GmbH
Metallgesellschaft AG
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 Paul Rauschert & Co KG GmbH, Metallgesellschaft AG filed Critical Paul Rauschert & Co KG GmbH
Publication of EP0033562A2 publication Critical patent/EP0033562A2/fr
Publication of EP0033562A3 publication Critical patent/EP0033562A3/fr
Withdrawn legal-status Critical Current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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls

Definitions

  • the invention relates to machining bodies for the surface treatment of workpieces according to the surface grinding method, consisting of a plastic mass such as ceramic or plastic, which is cast or pressed with or without mixed-in grinding particles to form geometric bodies and is then solidified.
  • Vibratory grinding is a process in which a bed of processing means and workpieces is subjected to a vibration and circulation movement in a work container.
  • the abrasive or even smoothing surface treatment is achieved by friction due to relative movement between the workpieces and the machining bodies.
  • the surface grinding process can be matched to a large number of surface treatment types and any workpieces by selecting appropriate process parameters and size, shape and material properties of suitable machining bodies, unless the size of the latter makes them unsuitable for this process.
  • the surface grinding process is much more economical than the surface treatment of individual workpieces. It has therefore largely become established, particularly in the mass production of small parts. Nevertheless, efforts are being made to further improve the surface grinding process. Part of this effort is directed towards the machining bodies that wear out during operation and therefore have to be constantly supplemented or renewed. If one takes into account that the cost of the machining bodies often accounts for up to 40% of the total cost of a finishing grinding process, it is understandable that considerable efforts are made to develop machining bodies with a higher grinding performance and a longer service life. However, various - restrictive conditions must be observed. The service life cannot be increased arbitrarily, for example, by using machining bodies of substantially greater hardness.
  • the hardness of their material must also be matched to the material of the workpieces and the type of surface treatment.
  • the grinding performance which essentially depends on the surface pressure between the machining body and the workpiece cannot be increased arbitrarily because the machining bodies have to be optimized for the respective machining process with regard to the size, shape and specific weight of their material.
  • the invention has for its object to provide machining bodies with which the surface grinding process can be carried out more economically overall without the advantages gained here being lost again due to a complicated manufacture of the machining bodies.
  • the sought-after machining bodies ' should have a high grinding performance with a good service life at the same time.
  • Machining bodies of the type described at the outset are proposed, which are characterized in that the surface of the geometric bodies has a plurality of groove-shaped or cup-shaped depressions.
  • the processing bodies expediently consist of sections of an extruded strand of material which has groove-shaped depressions parallel to the pressing direction on the surface of the strand. They preferably consist of sections of an extruded strand of material, the cross-section of which essentially corresponds to a simple geometric surface (e.g. circle, triangle, square, etc.), which has indentations distributed inwards on the circumference.
  • the sections have cutting planes running perpendicular to the pressing direction of the material strand. Furthermore, the cutting planes can run at an angle of at least 30 ° to the pressing direction of the strand. Finally, it is possible to arrange the two cutting planes either so that they run parallel to one another or that the front and rear cutting surfaces have an angle of equal size with the pressing direction, to each other, however, are arranged rotated by 180 ° about the press axis.
  • the groove-shaped depressions can be formed with different widths and depths. You expediently have a semicircular or U-shaped cross section.
  • the machining bodies can consist of individually cast or pressed geometric bodies which have groove-like or cup-shaped depressions on all surfaces.
  • the cutting edge length of a machining body of a given size and basic shape can be substantially increased when applying the inventive concept, which is synonymous with a corresponding increase in the grinding performance.
  • the machining bodies according to the invention have approximately the same service life as those of the same basic geometric shape, but without groove-shaped or cup-shaped depressions.
  • the considerable improvement in grinding performance with essentially the same service life is attributed to the fact that the machining bodies according to the invention show a completely different wear behavior.
  • the longer cutting edge length they act much more frequently on the workpieces with higher surface pressure, with the process conditions remaining the same, which results in the higher grinding performance.
  • the groove-shaped or well-shaped depressions act as drainage channels for the material removed from the workpieces on the one hand and due to wear on the machining bodies on the other hand, thereby further improving the grinding performance and reducing the Wear of the machining body is achieved.
  • there is another not inconsiderable advantage which is that, overall, a lower abrasive body mass is required for a certain bulk volume.
  • the material "saved" by the groove-shaped or cup-shaped depressions has practically no effect on the bulk volume of the processing bodies, but on the other hand represents a not inconsiderable saving in the production of the processing bodies.
  • the higher grinding performance of the machining body according to the invention is also due to the fact that the total abrasion of workpieces and machining bodies affects the engagement of the grinding edges on the workpiece significantly less than in machining bodies without groove or cup-shaped depressions in which the abrasion temporarily accumulates and through which it can be removed from the respective grinding point.
  • the machining body 1 shown in FIG. 1 consists of a section of an extruded strand of material with an essentially triangular cross-sectional area, groove-shaped depressions 2 being formed in the strand surface parallel to the pressing direction.
  • the processing body 1 has been cut to length from the extruded material strand by cuts made perpendicular to the pressing direction.
  • FIGS. 2 and 3 show machining bodies 1 with a square or circular cross-sectional area. They also have groove-shaped depressions 2 parallel to the pressing direction and are cut to length from the material strand by cuts perpendicular to the pressing direction.
  • FIG. 3 shows a longer section of a strand of material 3 and the pressing direction is indicated by arrow 4.
  • the cuts 1 to 3 form parallel cutting planes and the resulting machining bodies have a rhombic cross-sectional area in the side view.
  • the cuts S3 to S5 form cutting planes which form the same angle with the pressing direction but which have a bearing rotated by 180 ° about the pressing axis. That way you can. Machining bodies are produced that have a trapezoidal or triangular cross-sectional area in the side view.
  • the machining bodies according to the invention therefore not only have better grinding performance when new, they also retain the higher grinding performance until they have to be separated from the bed of machining bodies in the working container because they have become too small. Overall, the surface treatment of workpieces can therefore be carried out much more economically with the machining bodies according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP81200072A 1980-02-02 1981-01-22 Corps destinés au traitement de tonnelage Withdrawn EP0033562A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803003787 DE3003787A1 (de) 1980-02-02 1980-02-02 Bearbeitungskoerper fuer das gleitschleifverfahren
DE3003787 1980-02-02

Publications (2)

Publication Number Publication Date
EP0033562A2 true EP0033562A2 (fr) 1981-08-12
EP0033562A3 EP0033562A3 (fr) 1981-08-26

Family

ID=6093555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200072A Withdrawn EP0033562A3 (fr) 1980-02-02 1981-01-22 Corps destinés au traitement de tonnelage

Country Status (3)

Country Link
EP (1) EP0033562A3 (fr)
JP (1) JPS56119364A (fr)
DE (1) DE3003787A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736547A (en) * 1987-03-27 1988-04-12 The Abbott Ball Company Steel abrading elements for mass finishing of workpieces and methods of making and using same
US4835911A (en) * 1987-03-27 1989-06-06 The Abbott Ball Company Methods of making steel abrading elements for mass finishing of workpieces and for using same
WO2001034345A1 (fr) * 1999-11-10 2001-05-17 Tseng Shao Chien Support abrasif a densite specifique et contour variable
WO2003068451A1 (fr) * 2002-02-12 2003-08-21 Neef Gmbh & Co. Kg Procede pour le post-traitement de flans d'acier special façonnes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858075U (ja) * 1981-10-15 1983-04-19 富士紡績株式会社 パチンコ玉研磨用シ−ト材料
JPS58160753U (ja) * 1982-04-21 1983-10-26 富士紡績株式会社 パチンコ玉研磨材
JPH0379258U (fr) * 1989-12-06 1991-08-13
JPH0396169U (fr) * 1990-01-22 1991-10-01

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1752108A1 (de) * 1967-09-19 1971-10-07 Roto Finish Co Verfahren zur Herstellung von Schleifmaterial enthaitenden Formstuecken

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1752108A1 (de) * 1967-09-19 1971-10-07 Roto Finish Co Verfahren zur Herstellung von Schleifmaterial enthaitenden Formstuecken

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736547A (en) * 1987-03-27 1988-04-12 The Abbott Ball Company Steel abrading elements for mass finishing of workpieces and methods of making and using same
US4835911A (en) * 1987-03-27 1989-06-06 The Abbott Ball Company Methods of making steel abrading elements for mass finishing of workpieces and for using same
WO2001034345A1 (fr) * 1999-11-10 2001-05-17 Tseng Shao Chien Support abrasif a densite specifique et contour variable
WO2003068451A1 (fr) * 2002-02-12 2003-08-21 Neef Gmbh & Co. Kg Procede pour le post-traitement de flans d'acier special façonnes
US7520039B2 (en) 2002-02-12 2009-04-21 Neef Gmbh & Co. Kg Method for the post-treatment of deformed high-grade steel blanks

Also Published As

Publication number Publication date
JPS56119364A (en) 1981-09-18
EP0033562A3 (fr) 1981-08-26
DE3003787A1 (de) 1981-08-13

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RIN1 Information on inventor provided before grant (corrected)

Inventor name: SONDERMANN, JOERG, DIPL.-ING.

Inventor name: JAENICKE, DIETRICH

Inventor name: SCHWANE, GUENTHER