CN220144846U - Discrete edge end mill with variable chip dividing groove parameters - Google Patents
Discrete edge end mill with variable chip dividing groove parameters Download PDFInfo
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- CN220144846U CN220144846U CN202321493723.0U CN202321493723U CN220144846U CN 220144846 U CN220144846 U CN 220144846U CN 202321493723 U CN202321493723 U CN 202321493723U CN 220144846 U CN220144846 U CN 220144846U
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 43
- 230000000452 restraining effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 7
- 238000003801 milling Methods 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000001228 spectrum Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 6
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a discrete edge end mill with variable chip dividing groove parameters, which consists of a cutter handle and an edge part, wherein the edge part consists of four peripheral edges and four end edges, chip dividing grooves with variable parameters are arranged on the rear cutter surface of the peripheral edges, the intervals among the chip dividing grooves are unequal, and the width of each chip dividing groove presents a structure with narrow front and wide rear. Dividing the peripheral edge into two types according to the arrangement mode of the chip-dividing grooves on the peripheral edge, wherein the chip-dividing grooves on the first type of peripheral edge are arranged from dense to sparse, and the chip-dividing grooves on the second type of peripheral edge are arranged from sparse to dense. According to the utility model, the frequency spectrum characteristics of the end mill during milling can be changed due to different types of two adjacent peripheral edges, vibration in the machining process is restrained, the machining precision of a workpiece can be ensured due to a small number of chip dividing grooves on the peripheral edges, the axial milling force can be reduced due to the chip dividing grooves with the front narrow structure and the rear wide structure, generated chips are shorter, and the heat dissipation performance of the cutter is improved.
Description
Technical Field
The utility model relates to the technical field of milling tools, in particular to a discrete edge end mill with variable chip dividing groove parameters.
Technical Field
The end mill is a processing tool commonly used for a numerical control machine tool, the requirements on the structure of parts are higher and higher in recent years along with the continuous development and change of technologies, such as deep cavity parts required in the fields of aerospace, new energy equipment and the like, and the requirements on the parts are growing.
When the traditional end mill is used for machining deep cavity parts, the axial cutting depth is large, so that the cutting force is large, the end mill is easy to vibrate in the machining process due to suspension elongation during machining, generated chips are not easy to break, curled long chips are easy to generate, overlong chips are difficult to discharge, the machined surface of a workpiece is scratched, and the machining precision of the workpiece is reduced. It is therefore particularly important to design an end mill for machining deep cavity type components.
Disclosure of Invention
The utility model provides a discrete edge end mill with variable chip dividing groove parameters, which aims to solve the problems of overlong chips and large cutting force easily occurring in the existing deep cavity part processing.
The technical scheme provided by the utility model is as follows: the discrete edge end mill with variable chip dividing groove parameters is one integral end mill comprising shank and edge part, the edge part consists of four peripheral edges, chip dividing grooves are set on the back surface of the peripheral edge and with unequal interval between the chip dividing grooves, the chip dividing grooves are alternately arranged in dense and dense mode, and the chip dividing grooves are wide in width and narrow in front and back.
Further, the discrete edge end mill with variable flute parameters has an overall dimension of 105mm, a diameter of 20mm, a core thickness H of 12mm, an edge length of 40mm, and a helix angle of 30 °.
Further, the discrete edge end mill peripheral edge rake angle gamma of the variable chip dividing groove parameter z 10 ° rake face width B 1 Is 2mm, zhou Rendi a relief angle alpha z1 10 DEG, width B of the peripheral edge first flank face az1 Is 1.5mm, zhou Rendi two relief angle alpha z2 15 DEG, circumferenceWidth of second flank of blade B az2 1.5mm, radius R of the flute profile of the blade 1 2.53mm, R 2 7.12mm; first relief angle alpha of end edge d1 10 DEG, width B of the first flank of the end edge ad1 2mm, end edge second relief angle alpha d2 15 deg..
Further, the peripheral edge of the discrete edge end mill with variable chip dividing groove parameters is provided with five chip dividing grooves, the distances among the chip dividing grooves are unequal, the intervals among the central axes of the chip dividing grooves are distributed from dense to sparse, and the distances are as follows from left to right in sequence: k (K) 1 ＝4.2mm，K 2 ＝6.7mm，K 3 ＝8mm，K 4 =8.7 mm; dividing the peripheral edge into two types according to the arrangement mode of the chip-dividing grooves on the peripheral edge, wherein the chip-dividing grooves on the first type of peripheral edge are arranged from dense to sparse, and the chip-dividing groove closest to the end edge is separated from the end edge by a distance W 1 The chip-dividing grooves on the second type of peripheral edge are arranged from sparse to dense, and the distance W between the chip-dividing groove closest to the end edge and the end edge 2 =6mm, and the kinds of adjacent two peripheral edges are different.
Further, the discrete edge end mill with variable chip dividing groove parameters is characterized in that: the width of the chip dividing groove on the peripheral edge is different, and the width C of the front groove 1 =1.2 mm, depth 1mm, backset width C 2 The shape of the chip dividing groove is spline curve, and the spline curve is formed by restraining two side endpoints of the groove width and the groove depth endpoint of the chip dividing groove.
The utility model has the beneficial effects that:
according to the utility model, the chip-dividing grooves on the rear cutter surface of the peripheral edge are arranged in a sparse and dense alternate mode on the adjacent peripheral edge, so that the frequency spectrum characteristic of the end mill during processing is changed, the vibration in the processing process is inhibited, and the processing precision of a workpiece can be ensured by a small number of chip-dividing grooves on the peripheral edge.
The width of the chip dividing groove is designed to be narrow in front and wide in back when the structure of the chip dividing groove is designed, so that a workpiece left by the cutting edge of the chip dividing groove with the narrower front side does not participate in a cutting area and cannot rub or interfere with the chip dividing groove at the back side when the workpiece is machined.
The existence of the chip dividing groove reduces the axial milling force during processing the workpiece, is easy to break chips, avoids the generation of curled long chips, and improves the heat dissipation performance of the cutter.
Drawings
In order to more intuitively illustrate the embodiments of the present utility model and the technical solutions in the technical claims, the following are exemplary illustrations of the technical claims.
FIG. 1 is an overall block diagram of the present utility model;
FIG. 2 is a cross-sectional view of the blade at A-A in FIG. 1;
FIG. 3 is an enlarged view of the end edge of the present utility model;
FIG. 4 is a peripheral edge development view of the present utility model;
fig. 5 is an enlarged partial view of the chip pocket of the present utility model.
Fig. 6 is a diagram of the shape of the chip breaker of the present utility model.
Reference numerals: 1. an end blade; 2. a peripheral edge; 2-1, a first class of peripheral edges; 2-2, second class peripheral edges; 3. a chip dividing groove; 4. a peripheral blade relief surface; 5. a blade section; 6. a knife handle; 7. the two ends of the groove width of the chip dividing groove; 8. the groove depth end point of the chip dividing groove.
The specific embodiment is as follows:
the present utility model will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, an end mill with variable flute parameters comprises a shank 1, an edge portion 2, four peripheral edges 3 and four end edges 7, the overall dimension is 105mm, the diameter is 20mm, the edge length is 40mm, and the helix angle is 30 °.
As shown in FIGS. 2 and 3, the core thickness H is 12mm, and the peripheral edge rake angle gamma is z 10 ° rake face width B 1 Is 2mm, zhou Rendi a relief angle alpha z1 10 DEG, width B of the peripheral edge first flank face az1 Is 1.5mm, zhou Rendi two relief angle alpha z2 15 DEG, the width B of the second flank of the peripheral edge az2 1.5mm, radius R of flute profile of blade 2 1 2.53mm, R 2 7.12mm; first relief angle alpha of end edge d1 10 DEG, width B of the first flank of the end edge ad1 2mm, end edge second relief angle alpha d2 15 deg..
As shown in fig. 4, the peripheral edge 2 of the discrete edge end mill with variable chip dividing groove parameters is provided with five chip dividing grooves 3, the distances among the chip dividing grooves 3 are unequal, the intervals among the central axes of the chip dividing grooves 3 are distributed from dense to sparse, and the distances are as follows from left to right in sequence:
K 1 ＝4.2mm，K 2 ＝6.7mm，K 3 ＝8mm，K 4 =8.7mm. The peripheral edges 2 are divided into two types, the chip-dividing grooves 3 on the first type of peripheral edges 2-1 are arranged densely to sparsely, and the distance W between the chip-dividing groove 3 closest to the end edge 1 and the end edge 1 1 The chip-separating grooves 3 on the second peripheral edge 2-2 are arranged from sparse to dense, and the distance W between the chip-separating groove 3 closest to the end edge 1 and the end edge 1 is 7.7mm 2 =6mm, the two adjacent peripheral edges 2 being different in kind.
As shown in FIG. 5, the chip breaker 3 is narrow in front and wide in rear, and the front groove width C 1 =1.2 mm, depth 1mm, backset width C 2 =1.5 mm, depth 1.3mm. The shape of the chip dividing groove 3 is spline curve, and the spline curve is formed by constraint of groove width two side end points 7 and groove depth end points 8 of the chip dividing groove 3.
The present utility model is not limited by the specific embodiments, and modifications can be made to the embodiments without creative contribution by those skilled in the art after reading the present specification, but are protected by patent laws within the scope of claims of the present utility model.
Claims (3)
1. A variable flute parameter discrete edge end mill characterized by: including handle of a knife (6) and cutting part (5), cutting part (5) are by four week cutting edges (2) and four end cutting edges (1) are constituteed, are equipped with chip separating groove (3) on week cutting edge back knife face (4), and the distance between chip separating groove (3) is inequality, and chip separating groove (3) present the alternate arrangement mode of density on adjacent week cutting edge (2), and the width of chip separating groove (3) presents the structure of front and back width.
2. A variable flute parametric discrete edge end mill as claimed in claim 1, wherein: five chip-separating grooves (3) are formed in the peripheral edge (2), the distances among the chip-separating grooves (3) are unequal, the distance among central axes of the chip-separating grooves (3) is distributed densely to sparsely, and the distances are sequentially from left to right:K 1 ＝4.2mm，K 2 ＝6.7mm，K 3 ＝8mm，K 4 =8.7 mm; dividing the peripheral edge (2) into two types according to the arrangement mode of the chip-dividing grooves (3) on the peripheral edge (2), arranging the chip-dividing grooves (3) on the first peripheral edge (2-1) from dense to sparse, and enabling the chip-dividing groove (3) closest to the end edge (1) to be separated from the end edge (1) by the distance W 1 =7.7 mm, the chip-separating grooves (3) on the second peripheral edge (2-2) are arranged from sparse to dense, the distance W between the chip-separating groove (3) closest to the end edge (1) and the end edge (1) 2 =6mm, and the kinds of adjacent two peripheral edges (2) are different.
3. A variable flute parametric discrete edge end mill as claimed in claim 1, wherein: the chip dividing grooves (3) on the peripheral edge (2) have different widths, and the front groove has a width C 1 =1.2 mm, depth 1mm, backset width C 2 =1.5 mm, depth 1.3mm; the shape of the chip dividing groove (3) is spline curve, and the spline curve is formed by restraining groove width two side end points (7) and groove depth end points (8) of the chip dividing groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321493723.0U CN220144846U (en) | 2023-06-12 | 2023-06-12 | Discrete edge end mill with variable chip dividing groove parameters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321493723.0U CN220144846U (en) | 2023-06-12 | 2023-06-12 | Discrete edge end mill with variable chip dividing groove parameters |
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| Publication Number | Publication Date |
|---|---|
| CN220144846U true CN220144846U (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321493723.0U Active CN220144846U (en) | 2023-06-12 | 2023-06-12 | Discrete edge end mill with variable chip dividing groove parameters |
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| Country | Link |
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| CN (1) | CN220144846U (en) |
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2023
- 2023-06-12 CN CN202321493723.0U patent/CN220144846U/en active Active
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