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
  • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
  • B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
  • B24B53/053—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels using a rotary dressing tool
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
  • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
  • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
  • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
  • B24D3/28—Resins or natural or synthetic macromolecular compounds

Definitions

• the invention relates to a method for dressing a grinding wheel according to claim 1.
• the profile of a grinding wheel loses it given shape and gets out of tolerance and / or the grinding surface of the Grinding wheel loses its original grinding properties, so that Grinding criteria such as forces, temperatures and surface quality change the workpiece and exceed the permissible limits.
• the grinding wheel must then be dressed, i.e. the original shape and loop property are restored.
• Dressing tools that contain diamond are used because diamond is the hardest known material with which the other materials are made can be edited.
• Another method is crushing or, more recently, spot crushing.
• the rotating dressing roller is made of steel or hard metal pressed against the diamond grinding wheel.
• One of the two Rolling is driven and takes the other roll with it by friction.
• the relative speed is the same Zero.
• a relative speed occurs in all other profile areas, which in addition to the effect of the contact pressure, the wear on the Crush roller increased.
• the peripheral speed is 1 m / s selected. Due to the contact pressure, the grain breaks out on the diamond disc, which is given the required form.
• Another disadvantage is the big one Wear of the crushing roller in particular the high expenditure of time in this Method.
• Dressing is basically a machining process, whereby the removal takes place essentially by abrasion of the bond.
• the dressing process must also be part of the process chain for grinding be automatable. When grinding with diamond grinding wheels is one Automation of the dressing process, however, because of the rule large dressing wear of the dressing tool is not possible. That applies especially when there are small tolerances and / or complicated profiles must be realized with curved gradients.
• the invention has for its object a method for dressing specify with which a diamond grinding wheel on simple and automatic Way can be trained.
• the diamond grinding wheel to be dressed one with an abrasive coating used in the small Diamond grains are formed with a binder to form agglomerates that in turn bound with a second binding agent to form an abrasive coating become.
• Such diamond grinding wheels are basically e.g. from the DE 196 14 401 become known.
• the invention recognizes that it is advantageous for dressing that if a diamond grinding wheel is also used for this, the diamond grains in a suitable bond in their abrasive coating.
• these diamond grains are significantly larger and less splintery than the diamond grains of the diamond grinding wheel.
• the relatively large dressing diamonds of the dressing tools hit on the agglomerates. From the small, weaker diamonds in the agglomerates that are more fragile than the diamond grains of the tool disc, pieces are knocked out or machined. alternative small diamond grains are separated from the composite in the agglomerates. The dressing process takes place as a result.
• the advantage of the method according to the invention is that diamond grinding wheels can be dressed in their agglomerate arrangement cause a grinding behavior that that of a diamond grinding wheel with much larger diamond grains.
• grinding wheels with agglomerates containing smaller diamond grains in the same way can be used without any special adjustment.
• workpiece disks can be easily removed dressing, and also automatically, so that the dressing process can be significantly simplified.
• the diamond grains of the tool disk have one configuration the invention has an average diameter of about 0.7 mm.
• the middle one The diameter of the diamond grains of the diamond grinding wheel is according to a further embodiment of the invention between 0.02 and 0.07 mm.
• the agglomerates of the workpiece disc contain between 3 and 15 diamond grains, which is preferred according to a further embodiment of the invention are ceramically bound. According to another embodiment of the The agglomerates are preferably invented in turn with synthetic resin bound.
• the agglomerates are preferably porous, which is what Dressing made easier.
• the method according to the invention is preferably carried out on diamond profile grinding wheels applied that require dressing.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=7700043

Family Applications (1)

Country Status (2)

Family Cites Families (7)

• 2001
  • 2001-09-24 DE DE2001146952 patent/DE10146952A1/de not_active Ceased
• 2002
  • 2002-07-24 EP EP02016530A patent/EP1295681A3/fr not_active Withdrawn

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