Sharpening method for drill tip back knife face of fully screw face drill

A drill tip and flank technology, which is applied in drilling/drilling equipment, components of boring machines/drilling machines, twist drills, etc., can solve the problems of low precision and complex motion relationship, and achieve less sharpening error sources. , Overcome the effect of complex and simple motion relations

Inactive Publication Date: 2007-10-17
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of complicated kinematic relationship and low precision of the traditional drill point flank sharpening method, and to provide a full helical machine tool that not only has simple kinematic relationship, but also is easy to adjust the machine tool and has fewer sharpening error sources. The sharpening method of the flank face of the face drill bit

Method used

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  • Sharpening method for drill tip back knife face of fully screw face drill
  • Sharpening method for drill tip back knife face of fully screw face drill
  • Sharpening method for drill tip back knife face of fully screw face drill

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Embodiment Construction

[0014] The flank face of the full helical drill bit is a continuous helical surface, which is ground by the relative helical feed motion of the grinding wheel and the drill bit. Referring to Fig. 1, the position of the grinding wheel 1 is fixed, and the drill bit 2 performs a helical feed movement with a pitch H around the machine tool spindle 3 to form a full helical flank flank drill tip. f 1 and F 2 It is the helicoid flank, when one flank F 1 After the sharpening is completed, the drill rotates 180° around its own axis relative to the starting position of the sharpening and grinds a symmetrical flank F with the same sharpening parameters 2 .

[0015] See Figure 1, X * Y * Z * , XYZ and X Y Z respectively represent the machine tool coordinate system, drill coordinate system and transition coordinate system when sharpening the flank, where X Y Z is defined by the machine tool coordinate system X * Z * plane around Y * Rotate the axis by an angle Φ, and move the orig...

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Abstract

The present invention relates to a tool sharpening method for the back tool face of drill head tip with a complete helical surface, wherein the back tool face is a continuous helical surface. In the tool sharpening process, the grinding wheel and the drill head execute a corresponding helix feeding movement, and the shaft line of the helical surface of the helix feeding movement intersects with the shaft line of the drill head to form an angle; the relative position of the grinding wheel and the drill head is adjusted according to the toll sharpening parameter of the back tool face; the grinding wheel is fixed, the drill head executes a helix feeding movement relative to the grinding wheel; alternatively, the drill head is fixed, the grinding wheel executes a helix feeding movement around the drill head. After the back tool face at one side is finished, the drill head spins by 180 degree relative to the initial position of the tool sharpening process and around the shaft line of the drill head, and the symmetrical back tool face is sharpened according to the same parameter. The present invention is adapted to the tool sharpening of drill tip of not only the big drill head but also the minitype drill head.

Description

technical field [0001] The invention relates to a method for sharpening the flank of a full-helical drill bit, which is suitable for sharpening the flank of a large drill bit and also suitable for sharpening the flank of a small drill bit. Background technique [0002] The flank of the traditional coaxial helicoid drill tip is actually only part of the helicoid, while the flank near the drill core is a very complicated curved surface. When sharpening, the edge of the grinding wheel is required and three Coordinated movement of coordinates can sharpen a reasonable chisel edge. The dressing and positioning accuracy of the grinding wheel are very high, and its motion relationship is complicated. This method is difficult to realize on a tiny drill bit; two grinding wheels are used for sharpening the flat drill tip. , the drill bit has to move a certain distance between the two grinding wheels, and this motion relationship is often a potential source of error in the geometry of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B3/28
Inventor 周志雄杨军言兰林丞
Owner HUNAN UNIV
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