Blade for bulb slotting cutter
A technology of ball end mills and blades, which is applied in the direction of milling cutters, milling machine equipment, milling machine equipment details, etc., can solve the problem that the dimensional accuracy and surface quality of workpieces are not very ideal, the accuracy of the outer circle of the blade is difficult to guarantee, and the blade structure is difficult to grind Processing and other problems, to achieve the effect of reducing processing difficulty, small vibration, and light cutting
Active Publication Date: 2007-11-28
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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Problems solved by technology
[0002] Conventional ball end mills, such as U.S. Patent US6135677, its cutting performance is mainly achieved by the design of the large tip of the tool tip. European Patent WO2004082877 achieves the fixed blade by milling two positioning grooves on the bottom of the cutter body. The cutting edge of this type of insert is arc-shaped, and the second flank is a single smooth arc surface, which cannot adapt to the changing cutting force, has large vibration, and the structure of the insert makes it difficult to grind and process, and the accuracy of the outer circle of the insert is difficult to guarantee. Therefore, the dimensional accuracy and surface quality of the processed workpiece are not very ideal.
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[0016] As shown in Figures 1, 2, 4-7, the insert of the ball end mill of the present invention mainly includes a top surface 1, a bottom surface 2 and two side surfaces 3, and the top surface 1 intersects with the two side surfaces 3 to form two cutting edges 4 , respectively composed of a straight edge 4a and an arc edge 4b, where the two cutting edges 4 intersect to form tool tips 6A, 6B; the rake face 5 where the cutting edge 4 is located has a first rake angle γ 1 and the second rake angle γ 2 ; The two sides 3 are composed of the first flank 3a and the second flank 3b respectively, the first flank 3a is in contact with the rake face 5 , and the second flank 3b is in contact with the bottom surface 2 . It is characterized in that: the first rake angle γ of the rake face where the arc edge 4b is located 1 From the intersection point of the straight edge 4a and the arc edge 4b to the tool tip 6A, 6B gradually becomes larger, its value is 10°-20°, the second rake angle γ...
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A cutting blade for the vertical rose cutter has two cutting edges consisting of the straight and arc cutting edges formed by the cross between top surface and lateral surface. Two cutting edges are intersected to form two tips. The front surface where the cutting edge exists has the first and the second front angles. Two lateral surfaces are composed of the first and the second back surfaces. Said the first front angle is gradiently increased from the intersection between straight and arc cutting edges to tip. The second back surface consists of a flat surface and an arc surface. Its top surface has several bosses. Its advantages are high power to bear variable cutting force, low vibration and high accuracy.
Description
technical field [0001] The invention relates to an end mill insert, in particular to a ball end mill insert for profiling milling and surface milling. Background technique [0002] Conventional ball end mills, such as U.S. Patent US6135677, its cutting performance is mainly achieved by the design of the large tip of the tool tip. European Patent WO2004082877 achieves the fixed blade by milling two positioning grooves on the bottom of the cutter body. The cutting edge of this type of insert is arc-shaped, and the second flank is a single smooth arc surface, which cannot adapt to the changing cutting force, has large vibration, and the structure of the insert makes it difficult to grind and process, and the accuracy of the outer circle of the insert is difficult to guarantee. Therefore, the dimensional accuracy and surface quality of the processed workpieces are not ideal. Contents of the invention [0003] Aiming at the above-mentioned shortcomings, the present invention p...
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IPC IPC(8): B23C5/02B23C3/02
Inventor 马晓魁陈林姜涛李剑伟
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD