CN203281964U - Efficient processing end-milling cutter - Google Patents

Abstract

The utility model relates to an efficient processing end-milling cutter for solving the technical problem that a conventional end-milling cutter can not realize reasonable matching of enough large chip removal space and enough high strength. A technical solution employed by the utility model is that the end-milling cutter comprises a knife handle and a cutting part with a chip removal slot and a spiral blade. A contour line of the chip removal slot comprises a line segment DE, a first circular curve EF and a second circular curve FM which are connected successively; and the chip removal slot forms a smooth curve by virtue of the line segment DE, the first circular curve EF and the second circular curve FM. The technical effects lie in that the end-milling cutter not only has enough strength but also has enough large chip removal space. Since the cut chips are treated reasonably, the cutting width and feeding speed of the end-milling cutter are increased greatly; the slot milling processing efficiency is increased by 3-4 times; side milling processing efficiency is increased by over 50%; the cutting process is more stable; and the surface smoothness and size precision of the workpiece are increased.

Description

A high-efficiency machining end mill

technical field

The utility model belongs to the technical field of cutting tools, and relates to an end mill, in particular to an efficient processing end mill used in general machining industry, automobile mould, aerospace, medical equipment and military industry.

Background technique

High-precision and high-efficiency are the development direction of modern cutting. The structural characteristics of ordinary end mills are that they cannot fully achieve a reasonable match between large enough chip removal space and high enough strength. The feeding speed is relatively small, and the cutting efficiency of high-power machine tools cannot be fully utilized, and the four-slot end mill cannot be used for slot processing, and its applicable range is small.

Contents of the invention

The purpose of this utility model is to solve the technical problem that ordinary end mills cannot fully realize the reasonable matching of large enough chip removal space and high enough strength. In order to solve this problem, we have designed a high-efficiency processing end mill. The setting fully guarantees a reasonable match between a large enough chip removal space and high enough strength, which greatly improves the cutting capacity, rotational speed and feed speed of the end mill during the cutting process, making the end mill suitable for large depth of cut, High-feed milling can achieve a high material removal rate, which can make full use of the cutting efficiency of high-power machine tools and improve work efficiency.

The specific technical solution adopted by the utility model for realizing the purpose of the invention is: a high-efficiency processing end mill, including a tool handle, a cutting part with a chip flute and a spiral peripheral edge, the key is: the chip flute The contour line comprises successively connected line segments DE, a first circular curve EF and a second circular curve FM, by means of which the chip flute forms a smooth curve.

The beneficial effect of the utility model is that: the contour line of the chip flute is a smooth curve formed by sequentially connecting the line segment DE, the first arc curve EF and the second arc curve FM, and the radius of the first arc curve EF is smaller than that of the second arc curve The radius of the two-arc curve FM, this structural setting not only ensures that the end mill has sufficient strength, but also enables the end mill to have a large enough space for chip removal, so that the end mill can eat a knife during the cutting process, The rotation speed and feed speed have been greatly improved, which can fully utilize the cutting efficiency of high-power machine tools and improve work efficiency. The difference between the indexing angles of adjacent spiral peripheral blades is 4°~15°. Due to the different indexing between adjacent spiral peripheral blades, the generation of resonance can be effectively prevented, and the disappearance of resonance can effectively reduce the The vibration of the machine tool improves the product finish and dimensional accuracy, and prolongs the service life of the end mill. This kind of end mill has strong adaptability, and it can not only perform slot milling, but also side milling, and can perform both rough machining and finishing machining. Due to the most reasonable treatment of chips, the cutting width and feed speed of the end mill are greatly improved, the efficiency of slot milling can be increased by 3 to 4 times, and the efficiency of side milling can be increased by more than 50%, and the cutting process is more stable , so that the surface finish and dimensional accuracy of the workpiece can be improved.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view along the direction A-B in Fig. 1 .

FIG. 3 is a partially enlarged view of C in FIG. 2 .

In the attached drawings, 1 represents the tool holder, 2 represents the flute, 3 represents the helical peripheral edge, α represents the helix angle, β1 represents the first indexing angle, β2 represents the second indexing angle, and γ represents the included angle.

Detailed ways

A high-efficiency machining end mill, including a tool holder 1, a cutting part with a chip flute 2 and a helical peripheral edge 3, the key is: the outline of the chip flute 2 includes line segments DE, first Circular curve EF and second circular curve FM, chip flute 2 forms a smooth curve by means of line segment DE, first circular curve EF and second circular curve FM.

The radius of the first arc curve EF is smaller than the radius of the second arc curve FM.

The helix angle α of the flutes 2 is 40°-50°.

The indexing angles of the adjacent helical peripheral edges 3 are complementary first indexing angle β1 and second indexing angle β2, between the first indexing angle β1 and the second indexing angle β2 The difference is 4°～15°.

The center point of the cutting part is O, and the angle γ between the line segment DE and the line segment DO is 0°～10°

When the utility model is actually used: the contour line of the chip removal groove 2 is a smooth curve formed by the line segment DE, the first arc curve EF and the second arc curve FM. This structure setting not only ensures that the end mill has Sufficient strength enables the end mill to have a large enough space for chip removal, so that the end mill can be applied to milling with large depth of cut and high feed, achieving a high material removal rate. The indexing angles of adjacent helical peripheral cutting edges 3 are different, which can prevent the occurrence of resonance, thereby effectively reducing the vibration of the machine tool, improving the product finish and dimensional accuracy, and prolonging the service life of the end mill.

Claims (5)

1. highly-efficient processing slotting cutter, comprise handle of a knife (1), with the cutting tip of chip area (2) and spiral Zhou Ren (3), it is characterized in that: the outline line of described chip area (2) comprises line segment DE, the first circular curve EF and the second circular curve FM that connects successively, and chip area (2) forms smooth curve by line segment DE, the first circular curve EF and the second circular curve FM.

2. a kind of highly-efficient processing slotting cutter according to claim 1, it is characterized in that: the radius of described the first circular curve EF is less than the radius of the second circular curve FM.

3. a kind of highly-efficient processing slotting cutter according to claim 1, it is characterized in that: the helical angle (α) of described chip area (2) is 40 °～50 °.

4. a kind of highly-efficient processing slotting cutter according to claim 1, it is characterized in that: the calibration angle of described adjacent spiral Zhou Ren (3) is complementary the first calibration angle (β 1) and the second calibration angle (β 2), and the difference between the first calibration angle (β 1) and the second calibration angle (β 2) is 4 °～15 °.

5. a kind of highly-efficient processing slotting cutter according to claim 1, it is characterized in that: the central point of described cutting tip is O, the angle (γ) between line segment DE and line segment DO is 0 °～10 °.

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