CN104959667A - Milling cutter provided with equidistant arc head on eccentric shape flank surface and grinding method - Google Patents

Abstract

The present invention relates to a milling cutter provided with an equidistant arc head on an eccentric shape flank surface and a grinding method, the cutter can reduce the vibration during the process of processing of different hardness of hardened steels for splicing of a mould, the cutter life and workpiece surface quality can be improved, the flank surface shape can be changed, and the cutter tip strength can be improved. The milling cutter is an overall hard alloy end milling cutter. The milling cutter includes a cutter shank (1) and the arc head (2), the arc head includes a large curvature arc (2-1) and a small curvature arc (2-2). Tooth-spacing angles are 87 degrees, 93 degrees, 87 degrees, and 93 degrees, tooth-spacing vertical angles are equal, helix angle (r) is 38 degrees, helix angle (v) is 40 degrees, and cutter end cutting edge flank surface (10) and circumferential cutting edge (6) are in eccentric shape. Front angle is in the range of 0-3 degrees, first clearance angle is in the range of 8-10 degrees, and second clearance angle is in the range of 15-22 degrees. The center position of the cutter is provided with cooling channels (3), the number of the cooling channels is four, and the four cooling channels respectively are located four cutting edge end tooth chip pockets. The present invention also provides a reference for the grinding of the cutter of the type.

Description

An eccentric flank with unequal arc head milling cutter and its grinding method

technical field

The invention relates to a milling cutter with an eccentric flank and an arc head with unequal distances and a grinding method.

Background technique

For molds with free-form surfaces of small curvature, such as automotive panels, whose structural shapes are complex. The processing of automotive panels mainly uses ball end milling cutters and ring milling cutters. When machining free-form surfaces with small curvature in three-axis, the ball end milling cutter has narrow processing bandwidth, small step distance, low efficiency and low precision. Especially for the hardened steel splicing mold with different hardness, the wear and damage of the tool caused by the vibration caused by the machining and the low surface precision of the workpiece restrict the development of automobile panels. In recent years, in order to improve processing efficiency, non-spherical end milling cutters (ellipsoidal end milling cutters and hyperbolic spherical end milling cutters) have been used to process small-curvature free-form surface molds. Although the processing efficiency has been improved, because the cutter head part is a regular curve (ellipse, hyperbola), which makes it difficult to determine the programming point of the surface machining of the machine tool, which increases the difficulty of programming. In terms of grinding tools, the traditional tool grinding often uses the software and empirical processing methods that come with the machine tool, which reduces the grinding accuracy of the milling cutter, and ultimately reduces the processing accuracy of the mold, shortens the tool life, and reduces the performance of the CNC machining equipment. fully use.

Contents of the invention

The purpose of the present invention is to provide an eccentric flank with unequal arc head milling cutter and grinding method, which can realize the milling of free-form surface with small curvature and reduce the cutting process of hardened steel splicing molds with different hardness. The vibration of the tool can improve the tool life and the surface processing quality of the workpiece. The problem that the cutting edge is easily damaged when the milling cutter cuts into the workpiece is solved. It solves the problems of narrow processing bandwidth, small step distance and low efficiency of the ball end milling cutter. Solve the problem that the programming machining point is difficult to determine when the non-spherical end milling cutter (ellipsoidal end milling cutter and hyperbolic spherical end milling cutter) processes the free-form surface with small curvature. In terms of grinding, using the designed tool edge line and helical line equation, the vector direction of the center of the grinding wheel and the coordinates of the center point of the grinding wheel are determined through coordinate conversion to obtain the grinding point track of the grinding wheel, which solves the problem of grinding wheel grinding. Loss, while improving the manufacturing accuracy of the milling cutter.

Above-mentioned purpose realizes by following technical scheme :

A milling cutter with an eccentric flank and an arc head with unequal distances and a grinding method thereof. The milling cutter is an integral carbide milling cutter, which includes a handle, and the arc head is characterized in that there are two sections of arcs The components are small arcs with a diameter of 2mm and large arcs with a diameter of 10mm. The arcs at both ends are smoothly connected to form an arc head. Under the same step distance, the processing bandwidth is improved, and the residual height of the processing surface is reduced at the same time.

An eccentric flank with unequal arc head milling cutter and its grinding method, characterized in that the unequal tooth pitch and helix angle of the arc head milling cutter are respectively 38° and 40°, and the inter-tooth The angles are 87°, 93°, 87°, 93° respectively, and the corresponding angles between teeth are equal. The tool vibration caused by milling hardened steel molds with different hardness is reduced during the milling process. Such a structure has better vibration damping performance, and at the same time improves the tool life and the surface processing quality of the workpiece.

An eccentric flank with unequal arc-shaped head milling cutter and its grinding method, for processing spliced hard steel spliced molds with different hardness. The rake angle is 0°~10°, the first relief angle range: 8°~10°, the second relief angle range: 15°~20°.

An eccentric flank with unequal arc head milling cutter and its grinding method, characterized in that there is a cooling channel at the center of the tool, the outlet of the cooling channel is located at the cutter head, and the four cooling channels are respectively located at the four Tooth flute at the cutting edge. It is beneficial to take away the chips that generate heat, reduces the heat generated in the process, protects the cutting edge of the cutting tool, and prolongs the life of the tool.

A milling cutter with an eccentric flank and an arc head with unequal distances and its grinding method, the feature is that the flanks of the end edge and peripheral edge of the cutter are eccentric. In this way, the strength of the tool tip prolongs the life of the tool, and solves the problem that the tool is damaged when it cuts into the workpiece.

Combining with Figure 7, an eccentric flank with unequal arc-shaped head milling cutter and its grinding method, the grinding method of its rake face: grinding method of unequal-distance arc-shaped head milling cutter rake face, determine the flat When the grinding wheel grinds the rake face of the arc head cutting edge and the groove spiral cutting edge of the milling cutter, after the installation angle of the grinding wheel is determined according to the helix angle of different cutting edges, the tool coordinate system, the grinding wheel coordinate system and the grinding point coordinate system. The grinding wheel starts from the upper end point of the cutting edge, establish the coordinates of the grinding wheel center point of the grinding starting point in the grinding point coordinate system, the axis vector of the grinding wheel is parallel to the normal vector of the rake face of the top edge where the grinding point is located, and the grinding direction is Tangent direction of the cutting edge. The coordinates of the center point of the grinding wheel for grinding the next point are established by the coordinates of the center point of the grinding wheel at the previous point, the rotation angle of the grinding wheel, the rotation angle of the tool, and the coordinate transformation of the grinding point coordinate system. The axis vector of the grinding wheel is parallel to the rake face where the grinding point is located. normal vector, the grinding direction is the tangent direction of the edge line. When this method moves to the end point of the cutting edge, another cutting edge is ground. The axis vector of the grinding wheel is always parallel to the normal vector of the rake face where the grinding point is located, and the grinding direction is the tangent direction of the cutting edge. When moving to the end point of the cutting edge, the peripheral edge is ground, the axis vector of the grinding wheel is parallel to the normal vector of the rake face of the peripheral edge, and the grinding direction is the tangential direction of the peripheral edge. The coordinates and the wheel axis vector determine the grinding trajectory of the wheel. The smooth connection of the three cutting edges ensures that the grinding wheel grinds to form a smooth helical surface and an accurate rake face.

An eccentric flank with unequal arc-shaped head milling cutter and its grinding method, the grinding method of the flank face: determine the distance between the circular arc head cutting edge and the groove helical cutting edge of the flat grinding wheel grinding milling cutter For the cutter face, after determining the inclination angle μ of the grinding wheel, the inclination angle is the installation angle of the grinding wheel at the first relief angle of the tool. According to the cutting edge equation, the grinding wheel starts from the end point of the cutting edge, and the grinding wheel at the starting point of grinding is established in the coordinate system of the grinding point. The coordinates of the center point, the axis vector of the grinding wheel is parallel to the normal vector of the flank of the top edge, and the grinding direction of the grinding wheel is the tangent direction of the cutting edge. The coordinates of the center point of the grinding wheel for grinding the next point are established by the coordinates of the center point of the grinding wheel at the previous point, the rotation angle of the grinding wheel, the rotation angle of the tool, and the coordinate transformation of the grinding point coordinate system, and the direction is the direction of the tangent vector of the blade curve. When moving to the end point of the cutting edge in this way, the grinding wheel will move along the tangent vector direction of the other cutting edge. When moving to its end point, the grinding wheel will grind along the tangent vector direction of the peripheral edge. The axis vector of the grinding wheel is parallel to The normal vector of the flank of the peripheral edge, the grinding track of the grinding wheel is determined by the coordinates of the center point of the grinding wheel at each point and the axis vector of the grinding wheel. The smooth connection of the three cutting edges ensures that the grinding wheel grinds to form a smooth first flank, and the same method is used to grind the second flank.

An eccentric flank with unequal arc-shaped head milling cutter and its grinding method, the unequal-distance grinding method of the arc-shaped end milling cutter: when the grinding wheel grinds the milling cutter at unequal distances, according to when the grinding is completed For one cutting edge, according to the size of the inter-tooth angle, the tool rotates around the Z-axis of the coordinate system corresponding to the corresponding inter-tooth angle to grind the second cutting edge, and the same method is used to grind the third and fourth cutting edges grinding.

An eccentric flank with unequal arc head milling cutter and its grinding method. After the milling cutter is ground, the edge line is detected by the G3 tool detector and the rake angle and relief angle are checked by a universal tool microscope. , Helix angle accuracy detection, which proves that the processing method adopted is accurate and reliable.

The beneficial effect of the present invention with respect to modern technology:

1. An eccentric flank with unequal arc head milling cutter and its grinding method according to the present invention. The cutter adopts unequal distance cutter design, which solves the problems caused by the cutter when processing hardened steel splicing molds with different hardness. vibration, the processing quality is not high, and the tool life is improved at the same time.

2. A milling cutter with an eccentric flank with an unequal distance arc head and a grinding method thereof according to the present invention, the milling head of the arc head includes a ball head with a small curvature of the end edge of the tool, and the radius is 5 mm. Between the small curvature ball head and the tool peripheral edge is a large curvature ball head, the maximum curvature radius is 1mm, and the arcs at both ends are smoothly connected. It solves the problems that the ball-end milling cutter processes small curvature planes, narrow processing bandwidth, small processing line spacing and low processing accuracy.

3. A milling cutter with an eccentric flank with unequal distances and a grinding method according to the present invention. The cutter is made of hard alloy material, and the milling cutter head with a circular arc head includes a small end edge of the cutter. Curvature ball head with a radius of 5 mm, and a large curvature ball head (2-1) with a radius of 1 mm between the small curvature ball head and the peripheral edge of the tool. It solves the problem that it is difficult to determine the programming center point of the non-spherical end milling cutter (ellipsoidal end milling cutter, hyperbolic spherical end milling cutter) during machining.

4. A milling cutter with eccentric flanks with unequal arcs and its grinding method according to the present invention is characterized in that the flanks of the end edge and peripheral edge of the cutter are eccentric. This protects the cutting edge, reduces tool wear and increases tool life.

5. An eccentric flank with unequal arc head milling cutter and its grinding method according to the present invention, which is characterized in that there is a cooling channel at the center of the tool, 4 cooling channels, and the outlet of the cooling channel is at the cutter head , which are respectively located in the tooth chip pockets of the four cutting edges, which are beneficial to take away the generated chips, and at the same time reduce the heat of the cutting edge of the tool, protect the cutting edge of the cutting tool, and prolong the tool life.

To sum up, the tool structure of the present invention can reduce cutting vibration, improve the surface quality of the workpiece, and improve tool life and processing efficiency when processing small curvature free-form surfaces with different hardness hardened steel splicing dies.

An eccentric flank with unequal arc head milling cutter and the grinding method of the present invention establish the grinding track of the grinding wheel through coordinate conversion, and can accurately locate the direction and position of the grinding wheel, ensuring the geometric angle of the tool and the cutting edge In the case of strength, the grinding time is shortened and the grinding accuracy is improved.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a milling cutter with an eccentric flank with unequal distance arc head and its grinding method according to the present invention.

Fig. 2 is an enlarged view of the end cutting edge.

Fig. 3 is a left side view of Fig. 1 .

Fig. 4 is a right side view of Fig. 1 .

Figure 5 is a comparison of tools for machining free-form surfaces with small curvature. The dotted outline is a ball-end milling cutter, and the solid-line outline is an arc-end milling cutter. Δh ₂ is the residual height map of the cutting surface of the arc-end milling cutter, Δh ₁ is the residual height map of the cutting surface of the ball-end milling cutter, d ₁ is the cutting bandwidth of the ball milling cutter, and d ₂ is the cutting bandwidth of the arc-end milling cutter.

FIG. 6 is an enlarged view of the F-F cross section of FIG. 1 .

Fig. 7 is an enlarged view of the K-K section of Fig. 1 .

Fig. 8 is the path diagram of the grinding rake face and spiral groove of the grinding wheel grinding arc head milling cutter, the tool coordinate system O-XYZ, the grinding wheel coordinate system O ₁ -X ₁ Y ₁ Z ₁ , the grinding point coordinate system O ₂ - X ₂ Y ₂ Z ₂ .

Fig. 9 is the path diagram of the grinding flank of grinding wheel grinding circular arc head milling cutter, tool coordinate system O-XYZ, grinding wheel coordinate system O ₃ -X ₃ Y ₃ Z ₃ , grinding point coordinate system O ₄ -X ₄ Y ₄ z ₄ .

Detailed ways

Embodiment 1: In combination with Figures 1, 2, and 4, a milling cutter with an eccentric flank with unequal distances and a grinding method thereof, the cutter is an integral structure, and the cutter material is hard alloy. The milling cutter includes a shank (1) and an arc head (2), the diameter of the shank is 8mm, the arc head includes a small curvature arc (2-2), the arc radius is 5mm, and a large curvature arc (2- 1), the arc radius is 1mm. The arcs at both ends are smoothly connected to form the arc head of the milling cutter. Effect: Under the same pitch, the cutting bandwidth is increased (d ₂ >d ₁ ), the processing efficiency is improved, and the processing quality is improved (Δh ₂ <Δh ₁ ).

Specific embodiment two: Combining Figures 1 and 3, an eccentric flank with unequal arc head milling cutter and grinding method, the angle between (A-A) is 87°, and the angle between (B-B) The angle is 93°, the helix angle (r) is 38°, and the helix angle (v) is 40°. Effect: It avoids the impact of different hardness of hardened steel splicing molds on the machining stability during the cutting process, reduces the tool vibration during the cutting process, and improves the tool life and the surface quality of the processed workpiece.

Specific implementation mode three: Combining Figures 6 and 7, an eccentric flank with an unequal arc head milling cutter and its grinding method, the flank of the end edge (6) and the flank of the peripheral edge (10) are Eccentric shape. Effect: It can protect the cutting edge, reduce tool wear and prolong tool life.

Embodiment 4: In combination with Figure 6, an eccentric flank with unequal arc head milling cutter and its grinding method, the range of rake angle m1 of the end edge (2): 0°~3°, the end edge (2) ) range of relief angle n1: 8°~10°, range of end edge (2) relief angle n2: 15°~22°.

Specific embodiment five: in conjunction with Fig. 7 a kind of eccentric flank cutter with unequal distance arc head milling cutter and grinding method, the rake angle p of peripheral edge (8) is 0 ° ~ 10 °, after peripheral edge (8) The range of angle q1: 8°~10°, the range of peripheral edge (12) relief angle q2: 15°~22°.

Specific embodiment six: In combination with Figure 4, an eccentric flank with unequal arc head milling cutter and grinding method, the center of the tool has a cooling channel, respectively (3-1), (3-2), (3-3), (3-4). The cooling passages are four cooling passages, and the outlets are located at the arc head part, which are respectively located in the tooth chip pockets (7) of the four cutting edge ends. Effect: Take away the generated chips, reduce the heat of the cutting edge of the tool at the same time, protect the cutting edge of the cutting tool, and prolong the life of the tool.

Embodiment 7: In combination with Fig. 8, an eccentric flank milling cutter with unequal distance arc head and its grinding method, the grinding method of its rake face: grinding the rake face of unequal distance arc head milling cutter When determining the rake face of the cutting edge (2-1) and (2-2) of the arc head of the milling cutter with the flat grinding wheel, after determining the installation angle α of the grinding wheel according to the helix angle of the different cutting edges, the tool coordinates System O-XYZ, grinding wheel coordinate system O _1- X ₁ Y ₁ Z ₁ , grinding point coordinate system O ₂ -X ₂ Y ₂ Z ₂ . The grinding wheel starts from the upper end point of the cutting edge (2-2), and the center point of the grinding wheel to establish the starting point of grinding is in the coordinate system O ₂ -X ₂ Y ₂ Z _2. The axis vector of the grinding wheel is parallel to the top edge where the grinding point is located. The normal vector T ₃ of the rake face (13), and the grinding direction is T ₁ . The coordinates of the center point of the grinding wheel at the next grinding point are established by the coordinate transformation of the center point of the grinding wheel at the previous point, the angle of rotation ω1 of the grinding wheel, the angle ω2 of the tool rotation, and the coordinate system of the grinding point O ₂ -X ₂ Y ₂ Z _2. The axis of the grinding wheel The vector is parallel to the normal vector T ₃ of the rake face where the grinding point is located, and the grinding direction is the tangent direction T ₁ of the edge line. When moving to the end point of the cutting edge (2-2) in this way, the axis vector of the grinding wheel is always parallel to the normal vector T ₃ of the rake face where the grinding point is located, and the grinding direction is T ₂ . When moving to the end point of the cutting edge (2-1), the axis vector of the grinding wheel is parallel to the normal vector T ₄ of the rake face (14) of the peripheral edge (8), and the grinding direction is the tangential direction T of the peripheral edge (8), The grinding trajectory of the grinding wheel is determined by the coordinates of the center point of the grinding wheel at each point and the axis vector of the grinding wheel. The smooth connection of the three cutting edges ensures that the grinding wheel grinds to form a smooth helical surface and an accurate rake face.

Embodiment 8: In combination with Fig. 9, an eccentric flank with unequal arc head milling cutter and its grinding method, the grinding method of its eccentric flank: determine the circular arc of the flat grinding wheel for grinding the milling cutter When the flanks (6) and (10) of the head cutting edge (2-1) and (2-2), after determining the inclination angle μ of the grinding wheel, the inclination angle is the first clearance angle (n1) of the tool and the installation angle of the grinding wheel β, tool coordinate system O-XYZ, grinding wheel coordinate system O _3- X ₃ Y ₃ Z ₃ , grinding point coordinate system O ₄ -X ₄ Y ₄ Z ₄ . According to the cutting edge equation, the grinding wheel starts from the upper end point of the cutting edge (2-2), establish the coordinates of the center point of the grinding wheel at the grinding point coordinate system O ₄ -X ₄ Y ₄ Z ₄ , and the axis vector of the grinding wheel is parallel On the normal vector T ₅ of the flank (11) of the top edge, the grinding direction of the grinding wheel is T ₁ . The coordinates of the center point of the grinding wheel for grinding the next point are established by the coordinates of the center point of the previous point of grinding wheel, the angle of rotation ω3 of the grinding wheel, the angle ω4 of tool rotation, and the coordinate conversion of the grinding point coordinate system O ₄ -X ₄ Y ₄ Z ₄ , and the direction is The tangent vector T of the blade curve is in the ₁ direction. When moving to the end point of the cutting edge (2-2), the grinding wheel will move along the direction of the tangent vector T ₂ of the cutting edge (2-1), and when moving to the end point of the cutting edge (2-1), the grinding wheel will move along the Grinding along the tangent vector T of the peripheral edge (8), the axis vector of the grinding wheel is parallel to the normal vector T ₆ of the flank (6) of the peripheral edge (8), and the coordinates of the center point of the grinding wheel at each point and The grinding wheel axis vector determines the grinding trajectory of the grinding wheel. The smooth connection of the three cutting edges ensures that the grinding wheel is ground to form a smooth first flank (6), (10), and the same method is used to grind the second flank (5), (9).

Embodiment 9: Combining Embodiment 7 and Embodiment 8, an eccentric flank with unequal distance arc head milling cutter and its grinding method, the unequal distance grinding method of its arc head milling cutter: grinding wheel grinding When the milling cutter is not equidistant, when one cutting edge (2-3) is ground, the tool rotates the angle (A-A) around the Z axis of the coordinate system to grind the second cutting edge (2-4). Grinding the third and fourth cutting edges using the same method.

Embodiment 10: In combination with an eccentric flank with unequal arc head milling cutter and its grinding method, after the milling cutter is ground, the edge line detection and universal tool microscope are carried out by the G3 knife detector The rake angle, back angle, and helix angle accuracy test are carried out to prove that the processing method adopted is accurate and reliable.

Claims (10)

1. knife face band Unequal distance circular arc head milling cutter and method for grinding after an eccentric shape, described milling cutter is monoblock type carbide alloy milling cutter, it comprises handle of a knife (1), cutter head (2) is characterized in that being made up of two sections of circular arcs is small arc-shaped (2-1), orthodrome (2-2) respectively, article 4, cutting edge, there is cooling passage described center cutter position, and described cooling passage outlet is positioned at cutter ends.

2. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of one according to claim 1, its feature: described circular arc head milling cutter head comprises the small curve bulb of cutter ends, deep camber bulb between described small curve bulb and cutter, the cutter head of two tangent these milling cutters of composition of curvature circular arc.

3. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of one according to claim 1, its feature: described unequal blade spacing, helical angle is respectively 38 °, 40 °, and angle between teeth is respectively 87 °, 93 °, 87 °, 93 °, and between cog vertical angles are equal.

4. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of the one according to claim 1,2,3, its feature: described knife end rake angle is 0 ° ~ 3 °, rake angle is 0 ° ~ 10 °, angular region after first: 8 ° ~ 10 °, angular region after second: 15 ° ~ 20 °.

5. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of one according to claim 1, its feature: there is cooling duct center cutter position, described cooling duct outlet is positioned at tool bit part, and 4 cooling ducts lay respectively at 4 cutting edge end tooth chip pockets.

6. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of one according to claim 1, its feature: knife end sword, all blades divide rear knife face to be eccentric shape.

7. according to right 3, knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of one described in 4, the method for grinding of its rake face: Unequal distance circular arc head milling cutter rake face method for grinding, when determining the rake face of flat wheel grinding milling cutter circular arc head cutting edge and groove spiral cutting sword, after established angle according to the size determination emery wheel of different cutting edge helical angle, tool coordinate system, emery wheel coordinate system and grinding points coordinate system, emery wheel is from cutting edge upper extreme point, set up the coordinate of emery wheel central point at grinding points coordinate system of grinding starting point, the axis vector parallel of emery wheel is in the law vector of the top sword rake face at grinding points place, grinding direction be under the tangential direction grinding of cutting edge any emery wheel center point coordinate by upper emery wheel center point coordinate, the Coordinate Conversion of the emery wheel anglec of rotation and the cutter anglec of rotation and grinding points coordinate system is set up, the axis vector parallel of emery wheel is in the law vector of the rake face at grinding points place, grinding direction is the tangential direction of this section of sword line, when such method moves to the end points of cutting edge, carry out another cutting edge grinding, the axis vector of emery wheel is parallel to the law vector motion of the rake face at grinding points place all the time, grinding direction is the tangential direction of this cutting edge, when moving to the end points of this cutting edge, carry out all sharpenings to cut, grinding wheel spindle line vector is parallel to the rake face law vector of Zhou Ren, grinding direction is the tangential direction of Zhou Ren, by the coordinate of the abrasive grinding wheel central point of each point and the grinding track of grinding wheel spindle line vector determination emery wheel, being smoothly connected of three sections of cutting edges guarantees that wheel grinding forms fairing helicoid and accurate rake face.

8. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of the one according to right 4, thereafter the method for grinding of knife face: when determining knife face after the eccentric shape of straight-type wheel grinding milling cutter circular arc head cutting edge and Zhou Ren, determine the inclination angle of emery wheel, angle of inclination is the established angle of the first relief angle emery wheel of cutter, according to cutting edge equation emery wheel from cutting edge end points, set up the coordinate of emery wheel at the central point of grinding points coordinate system of grinding starting point, the law vector of axis vector parallel knife face after the sword of top of emery wheel, wheel grinding direction is the tangential direction of cutting edge, under grinding, the emery wheel center point coordinate of any passes through the coordinate of the central point of upper emery wheel, the Coordinate Conversion of the emery wheel anglec of rotation and the cutter anglec of rotation and grinding points coordinate system is set up, direction is the tangent vector direction of edge curve, when moving to the end points of cutting edge like this, emery wheel can move along the tangent vector direction of another cutting edge, when moving to its end points, emery wheel is by the tangent line direction vector grinding along Zhou Ren, the normal vector of axis vector parallel knife face after Zhou Ren of emery wheel, by the coordinate of the abrasive grinding wheel central point of each point and the grinding track of grinding wheel spindle line vector determination emery wheel, being smoothly connected of three sections of cutting edges guarantees that wheel grinding forms fairing major first flank, same method carries out the grinding of knife face after second.

9. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of the one according to right 3,7, the Unequal distance method for grinding of its circular arc head milling cutter: during wheel grinding milling cutter Unequal distance, according to when the complete cutting edge of grinding, according to the size of angle between teeth, cutter carries out the grinding of Article 2 cutting edge around the corresponding angle between teeth angle of coordinate system Z axis corresponding rotation, and same method carries out the grinding of Article 3, Article 4 cutting edge.

10. knife face band Unequal distance circular arc head milling cutter and method for grinding after the eccentric shape of the one according to right 3,4, carry out the detection of sword line by G3 cutter inspection instrument after described milling cutter grinding completes and universal tool-measuring microscope carries out anterior angle, relief angle, helical angle accuracy detection, confirm adopt processing method precisely reliable.