US2003060133A1PendingUtilityA1

Method and device for grinding fluted tools

36
Priority: Dec 23, 1999Filed: Dec 20, 2000Published: Mar 27, 2003
Est. expiryDec 23, 2019(expired)· nominal 20-yr term from priority
Inventors:Erwin Junker
B24B 3/247B24B 19/04
36
PatentIndex Score
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Cited by
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References
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Claims

Abstract

The invention relates to a method and device for grinding fluted tools ( 10 ) that have an essentially circular envelope curve, in particular, for grinding spiral fluted tools. The device provided with a steady for guiding the tool to be ground comprises a guideway ( 8 ) with at least two inner lateral faces. The lateral faces each extend in planes in a manner that is essentially parallel to the longitudinal axis of the tool to be ground and they form an angle for accommodating the tool to be ground, whereby the tool to be ground rests each time with at least two circumferential points (a 11, a 12 ) of its essentially circular envelope curve at least on two of the inner lateral faces of the guideway. In order to carry out the inventive method, a tool to be ground is appropriately clamped and pressed into the guideway by means of at least one grinding wheel ( 41 ) while the flutes are ground.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A device for grinding fluted tools with an essentially circular envelope curve, in particular spiral fluted tools, by means of grinding wheels, characterized in that a steady for guiding the tool to be ground includes a guideway ( 8 ) with at least two inner lateral faces which each extend in planes in a manner that is essentially parallel to the longitudinal axis of the tool ( 10 ) to be ground and which form an angle for accommodating the tool to be ground, said tool to be ground with at least two circumferential points (A 11 , A 12 ) of the essentially circular envelope curve each resting on at least two of said inner lateral faces of said guideway ( 8 ).  
     
     
         2 . The device of  claim 1  characterized in that a clamping lever ( 83 ) can be swivelled into the closed position for pressing the tool ( 10 ) to be ground into contact in the direction of the guideway ( 8 ).  
     
     
         3 . The device of claims  1  or  2  characterized in that the position of the steady and/or of the guideway ( 8 ) may be adjusted as a function of the diameter of the tool ( 10 ) to be ground with respect to the position of the longitudinal axis of the tool ( 10 ) to be ground.  
     
     
         4 . The device of claims  1  or  3  characterized in that said angle may be varied as a function of the diameter of the tool ( 10 ) to be ground.  
     
     
         5 . The device of one of  claims 1  to  4  characterized in that said device is designed for grinding tools ( 10 ) made of super-speed steel.  
     
     
         6 . The device of one of  claims 1  to  5  characterized in that said device is designed for grinding tools ( 10 ) made of hard metal.  
     
     
         7 . The device of one of  claims 1  to  6  characterized in that said guideway ( 8 ) is made of super-speed steel.  
     
     
         8 . The device of one of  claims 2  to  7  characterized in that said clamping lever ( 83 ) is made of super-speed steel.  
     
     
         9 . The device of one of  claims 1  to  8  characterized in that said guideway ( 8 ) includes at least one hard metal surface.  
     
     
         10 . The device of one of  claims 2  to  9  characterized in that said clamping lever ( 83 ) includes at least one hard metal surface.  
     
     
         11 . The device of one of  claims 1  to  8  characterized in that said guideway ( 8 ) includes at least one surface made of polycrystalline diamond (PCD).  
     
     
         12 . The device of one of  claims 2  to  8  or of  claim 11  characterized in that said clamping lever ( 83 ) includes at least one surface made of polycrystalline diamond (PCD).  
     
     
         13 . The device of one of  claims 5  to  12  characterized in that said grinding wheels are conundrum grinding wheels.  
     
     
         14 . The device of one of  claims 5  to  12  characterized in that said grinding wheels are CBN grinding wheels.  
     
     
         15 . The device of one of  claims 6  to  12  characterized in that said grinding wheels are diamond grinding wheels.  
     
     
         16 . A method for grinding fluted tools with an essentially circular envelope curve, in particular spiral fluted tools, which are clamped such that a steady including a guideway that has at least two inner lateral faces which each extend in planes in a manner that is essentially parallel to the longitudinal axis of the tool to be ground and which form an angle for accommodating the tool to be ground, guides the tool to be ground via two circumferential points at least which rest on at least two of said inner lateral faces of said guideway, and the tool to be ground is pressed into contact with and into the guideway by means of at least one grinding wheel while the flutes are ground.  
     
     
         17 . The method of  claim 16  wherein, for grinding the back, the tool to be ground is pressed into contact with and into the guideway by means of at least one grinding wheel.  
     
     
         18 . The method of one of claims  16  or  17 , wherein, for grinding the front cutting edges, the tool to be ground is additionally pressed into contact with and into the guideway by means of a clamping lever.  
     
     
         19 . The method of  claim 18  characterized in that front cutting edges, flutes and backs are ground in one chucking.

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