A vertically mounted four-sided eight-edged indexable shoulder milling cutter

Abstract

The utility model relates to the technical field of milling cutters, and discloses a vertically mounted four-sided eight-edged indexable square shoulder milling cutter, comprising a blade body, wherein the blade body is provided with four cutting surfaces, wherein each cutting surface comprises a main cutting edge, a wiper edge, a main cutting edge rake face, a main cutting edge flank face, a wiper edge rake face, a wiper edge flank face, a bottom mounting surface, and a flank mounting surface; wherein the main cutting edge and the wiper edge are connected by a tool tip curve; wherein the blade body is a rectangular parallelepiped structure; wherein a side-mounted clamping surface is provided on the blade body, and wherein the side-mounted clamping surface is a square; wherein the main cutting edge is formed by the intersection of the main cutting edge rake face and the main cutting edge flank face. The utility model provides a vertically mounted four-sided eight-edged indexable square shoulder milling cutter, which optimizes the structure of the square shoulder milling cutter, increases the cutting edge of the square shoulder milling cutter, and thereby reduces the loss of the milling cutter and tungsten ore resources.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a vertically mounted four-sided eight-edged indexable square shoulder milling cutter. Background Art

[0002] At present, milling cutters are often used in milling machine processing. The milling cutter is driven by the high-speed rotation of the milling machine spindle to cut the object at high speed. Various milling cutters are designed for different processing environments. For example, face milling cutters are suitable for processing larger planes, and end mills are suitable for processing smaller surfaces and grooves. Square shoulder milling cutters can process steps more efficiently. Square shoulder milling cutters are widely used in modern milling machines. Since square shoulder milling cutters are often used in processing environments with large cutting volumes, tool wear is large and the cutting edge utilization rate of the insert is low, which not only accelerates the tool wear rate, but also the consumption rate of tungsten ore resources is too fast. The existing vertical double-sided square shoulder milling cutters commonly used for mechanical processing on the market include 2-edge, 3-edge, 4-edge, 6-edge, etc. Square shoulder milling cutters have fewer cutting edges and the tool wear rate is too fast.

[0003] The prior art patent No. 202020094390.4 discloses a double-sided four-edged indexable square shoulder milling insert, including a insert body, the insert body is a prismatic structure and is bounded by a symmetrically positioned main face, an end edge finishing face and a shear angle side edge face, a transition face extends between the main face, the end edge finishing face and the shear angle side edge face and is connected to each other through the transition face, a mounting through hole is provided at the center of the main face, the connecting edge line between the main face and the end edge finishing face is determined as the end edge finishing edge, and the connecting edge line between the transition face and the shear angle side edge face is determined as the shear angle side edge, wherein a first radial side edge positive rake angle and a second radial side edge positive rake angle are sequentially provided on the transition face and located at the shear angle side edge, the shear angle side edge maintains an inclination angle of 12° with the longitudinal axis of the main face, and the end edge finishing edge maintains an inclination angle of 1° with the transverse axis of the main face. The end concave surface of the patented tool design is too large, which makes the cutting length of the end polishing edge short and has only four edges. The tool has fewer cutting edges involved in each cutting work. Due to the lack of cutting edges, the average cost of single-edge consumption is high, which also increases the loss of tungsten ore resources. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the utility model discloses a vertically mounted four-sided eight-edged indexable square shoulder milling cutter, which optimizes the structure of the square shoulder milling cutter, increases the cutting edges of the milling cutter, and provides a square shoulder milling cutter which can save tungsten ore resources, reduce the consumption rate of the tool, and has high economy.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A vertically mounted four-sided eight-edged indexable square shoulder milling cutter, comprising a blade body, wherein the blade body is provided with four cutting surfaces, wherein each cutting surface comprises a main cutting edge, a wiper edge, a main cutting edge rake face, a main cutting edge flank face, a wiper edge rake face, a wiper edge flank face, a bottom mounting surface and a flank mounting surface, and the main cutting edge, the wiper edge, the main cutting edge rake face, the main cutting edge flank face, the wiper edge rake face, the wiper edge flank face, the bottom mounting surface and the flank mounting surface are all a pair; the blade body is a rectangular parallelepiped structure;

[0007] The main cutting edge is formed by the intersection of the main cutting edge rake face and the main cutting edge flank face; the wiper edge is formed by the intersection of the wiper edge rake face and the wiper edge flank face; the main cutting edge and the wiper edge are connected by a tool tip curve;

[0008] The blade body is provided with a side clamping surface, and the side clamping surface is square.

[0009] Furthermore, the flank surface of the wiper blade is connected with an arc concave surface, and the arc concave surface is arranged around the blade body.

[0010] Furthermore, the adjacent cutting surfaces are axially symmetrical at 90° along the axis of the blade body, and the opposite cutting surfaces are axially symmetrical at 180° along the axis of the blade body.

[0011] Furthermore, a pair of main cutting edges, a tool tip curve, a connecting edge, and a wiper edge on the same side cutting surface are centrally symmetrical.

[0012] Furthermore, the wiper blades are connected via a connecting blade, and the connecting blade is formed by the intersection of a connecting blade rake surface and a connecting blade flank surface.

[0013] Furthermore, the curvature of the wiper edge is in the range of 660° to 1720°.

[0014] Furthermore, the included angle between the main cutting edge and a vertical line of the bottom mounting surface on the same side is 85°, and the included angle between the wiper edge flank and a vertical line of the bottom mounting surface on the same side is 80°.

[0015] Furthermore, the bottom mounting surface, the rear mounting surface, the main cutting edge flank surface, the wiper edge flank surface and the side mounting clamping surface are all planes.

[0016] Furthermore, a screw hole is provided at the center of the blade body, and the blade body is fixed to the mounting groove of the milling cutter disc or the milling cutter rod through the screw hole.

[0017] Furthermore, the radial installation back angle of the blade body installed on the installation groove is 18.5°, and the axial installation front angle on the installation groove is 91.8072°.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. By designing a four-sided eight-edge square shoulder milling cutter structure, the wiper edge and the main cutting edge have a certain inclination angle and are centrally symmetrical, the main cutting edge and the wiper edge are connected by a tool tip curve, and the first wiper edge and the second wiper edge are connected by a connecting edge. The structure of the blade is reasonably designed, the cutting edge utilization rate of the blade is high, and the cutting edge of the square shoulder milling blade is increased to eight edges to the greatest extent, thereby increasing the cutting edge utilization rate of the blade, so that in each cutting process, the cutting edge of the square shoulder milling cutter participating in cutting is increased, thereby reducing the loss rate of the square shoulder milling cutter and reducing the waste of tungsten ore resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a vertically mounted four-sided eight-edged indexable square shoulder milling cutter;

[0021] Figure 2 A schematic diagram of the A surface on a vertically mounted four-sided eight-edged indexable shoulder milling cutter;

[0022] Figure 3 It is a side view of a vertically mounted four-sided eight-edged indexable square shoulder milling cutter;

[0023] Figure 4 It is a top view of the assembly of a vertically mounted four-sided eight-edged indexable square shoulder milling cutter and a milling cutter disc;

[0024] Figure 5 The figure is a schematic diagram of the assembly of a vertically mounted four-sided eight-edged indexable square shoulder milling cutter and a milling cutter disc.

[0025] In the schematic diagram: 1. Blade body; 2. Main cutting edge; 3. Wiper edge; 4. Connecting edge; 5. Main cutting edge rake face; 6. Main cutting edge flank face; 7. Wiper edge rake face; 8. Wiper edge flank face; 9. Tip curve; 10. Connecting edge rake face; 11. Connecting edge flank face; 12. Bottom mounting surface; 13. Back mounting surface; 14. Side mounting clamping surface; 15. Screw hole; 16. Arc concave surface; 17. Axial mounting front angle; 18. Radial mounting back angle; 19. Cutter head; 20. Identification number; A. Cutting surface. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of the application scheme of the utility model, the utility model is described in detail below through specific implementation methods and in combination with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0028] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, reference terms; "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like are intended to mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0031] Example 1

[0032] like Figure 1-Figure 5As shown, a vertically mounted four-sided eight-blade indexable square shoulder milling cutter comprises a blade body 1, wherein the blade body 1 is provided with four cutting surfaces A, each of the cutting surfaces A is provided with a main cutting edge 2, a wiper edge 3, a main cutting edge rake face 5, a main cutting edge flank face 6, a wiper edge rake face 7, a wiper edge flank face 8, a bottom mounting surface 12 and a rear mounting surface 13, and the main cutting edge 2, the wiper edge 3, the main cutting edge rake face 5, the main cutting edge flank face 6, the wiper edge rake face 7, the wiper edge flank face 8, the bottom mounting surface 12 and the rear mounting surface 13 are all a pair; the blade body 1 is a rectangular parallelepiped structure.

[0033] The main cutting edge 2 is formed by the intersection of the main cutting edge rake face 5 and the main cutting edge flank face 6; the wiper edge 3 is formed by the intersection of the wiper edge rake face 7 and the wiper edge flank face 8; the main cutting edge 2 and the wiper edge 3 are connected by a tool tip curve 9.

[0034] The blade body 1 is provided with a side clamping surface 14, and the side clamping surface 14 is square.

[0035] like Figure 2 As shown, the main cutting edge 2, the tool tip curve 9, the connecting edge 4, and the wiper edge 3 on the same side cutting surface A are centrally symmetrical, that is, there are two main cutting edges 2, tool tip curve 9, connecting edge 4, and wiper edges 3 on the same side cutting surface A, and they are arranged centrally symmetrically.

[0036] In this embodiment, the vertically mounted four-sided eight-edged indexable square shoulder milling cutter achieves the effect of four-sided eight-edged edges through the main cutting edge 2 and the wiper edge 3 and uses the main cutting edge 2 and the wiper edge 3 to complete cutting work with different requirements. The vertically mounted four-sided eight-edged square shoulder milling cutter includes four cutting surfaces A, and also includes the main cutting edge 2, the wiper edge 3, and the tool tip curve 9 arranged on the cutting surface A. The blade body 1 is provided with a total of four groups of main cutting edges 2 and wiper edges 3, and the wiper edges 3 are connected by connecting edges 4, and the connecting edges 4 are formed by the intersection of the connecting edge rake face 10 and the connecting edge flank face 11; wherein, the main cutting edge rake face 5 refers to the rake face of the main cutting edge 2, and the main cutting edge flank face 6 refers to the flank face of the main cutting edge 2, and similarly, the front and rear faces of the remaining blades are also the same.

[0037] The vertically mounted four-sided eight-edged square shoulder milling cutter comprises a plurality of rake faces, a flank face, a mounting face, a side-mounted clamping face 14, and a main cutting edge 2 and a wiper edge 3 arranged at the intersection of the rake face and the flank face. An arc concave surface 16 is connected to the blade body 1 around the blade flank face 8 and located on the wiper edge. That is, the arc concave surface 16 is used to avoid cutting, which is beneficial to reducing cutting interference and also has the effect of heat dissipation, thereby increasing the service life of the vertically mounted four-sided eight-edged indexable square shoulder milling cutter and reducing the loss rate of tungsten ore resources.

[0038] Example 2

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, a vertically mounted four-sided eight-blade indexable square shoulder milling cutter comprises a blade body 1, wherein the blade body 1 is provided with four cutting surfaces A, each of the cutting surfaces A is provided with a main cutting edge 2, a wiper edge 3, a main cutting edge rake face 5, a main cutting edge flank face 6, a wiper edge rake face 7, a wiper edge flank face 8, a bottom mounting surface 12 and a rear mounting surface 13, and the main cutting edge 2, the wiper edge 3, the main cutting edge rake face 5, the main cutting edge flank face 6, the wiper edge rake face 7, the wiper edge flank face 8, the bottom mounting surface 12 and the rear mounting surface 13 are all a pair; the blade body 1 is a rectangular parallelepiped structure.

[0040] The main cutting edge 2 is formed by the intersection of the main cutting edge rake face 5 and the main cutting edge flank face 6; the wiper edge 3 is formed by the intersection of the wiper edge rake face 7 and the wiper edge flank face 8; the main cutting edge 2 and the wiper edge 3 are connected by a tool tip curve 9.

[0041] The blade body 1 is provided with a side clamping surface 14, and the side clamping surface 14 is square.

[0042] like Figure 2 As shown, the main cutting edge 2, the tool tip curve 9, the connecting edge 4, and the wiper edge 3 on the same side cutting surface A are centrally symmetrical, that is, there are two main cutting edges 2, tool tip curve 9, connecting edge 4, and wiper edges 3 on the same side cutting surface A, and they are arranged centrally symmetrically.

[0043] The blade body 1 is surrounded by a circular arc concave surface 16 located on the wiper edge flank 8 for reducing cutting interference; the blade body 1 is provided with four sets of main cutting edges 2 and wiper edges 3, and the wiper edges 3 are connected by connecting edges 4, and the connecting edges 4 are formed by the intersection of the connecting edge rake face 10 and the connecting edge flank face 11. The adjacent cutting faces A are axially symmetrical at 90° along the axis of the blade body 1, and the opposite cutting faces A are axially symmetrical at 180° along the axis of the blade body 1. When one of the cutting faces A of the blade body 1 is severely worn, the remaining cutting faces can continue to be used, thereby improving the utilization rate of the milling cutter and reducing the consumption rate of the milling cutter.

[0044] In this embodiment, the main cutting edge 2 maintains an inclination angle of 85° with the perpendicular line of the bottom mounting surface 12 on the same side, and the two main cutting edges 2 on the cutting surface A on the same side are inclined in opposite directions relative to the same bottom mounting surface 12, but have the same inclination angle with the perpendicular line of the bottom mounting surface 12, so that the cutting amount can be ensured to be the same regardless of the direction from which the blade body 1 contacts the workpiece to be cut, thereby ensuring the cutting accuracy requirements; ensuring that the main cutting edge 2 has a certain inclination relative to the blade body 1, and maintaining the main cutting edge 2 in contact with the workpiece to be cut in a progressive manner through this inclination angle, can reduce cutting resistance and improve cutting efficiency and cutting quality.

[0045] The angle between the wiper edge flank 8 and the vertical line of the bottom mounting surface 12 on the same side is 80°, that is, the angle between the wiper edge 3 and the vertical line of the bottom mounting surface on the same side is 80°. Through this design, it is ensured that the wiper edge flank 8 has a certain inclination relative to the blade body 1. When the wiper edge 3 is used for cutting, the smoothness of the workpiece is improved through a progressive contact method. Since the wiper edges 3 on the cutting surface on the same side of the blade body 1 are centrally symmetrical, the same precision can be guaranteed no matter which side of the blade body 1 the wiper edge 3 contacts the workpiece, and the cutting efficiency can also be improved.

[0046] Example 3

[0047] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a vertically mounted four-sided eight-blade indexable square shoulder milling cutter comprises a blade body 1, wherein the blade body 1 is provided with four cutting surfaces A, each of the cutting surfaces A is provided with a main cutting edge 2, a wiper edge 3, a main cutting edge rake face 5, a main cutting edge flank face 6, a wiper edge rake face 7, a wiper edge flank face 8, a bottom mounting surface 12 and a rear mounting surface 13, and the main cutting edge 2, the wiper edge 3, the main cutting edge rake face 5, the main cutting edge flank face 6, the wiper edge rake face 7, the wiper edge flank face 8, the bottom mounting surface 12 and the rear mounting surface 13 are all a pair; the blade body 1 is a rectangular parallelepiped structure.

[0048] The main cutting edge 2 is formed by the intersection of the main cutting edge rake face 5 and the main cutting edge flank face 6; the wiper edge 3 is formed by the intersection of the wiper edge rake face 7 and the wiper edge flank face 8; the main cutting edge 2 and the wiper edge 3 are connected by a tool tip curve 9.

[0049] The blade body 1 is provided with a side clamping surface 14, and the side clamping surface 14 is square.

[0050] like Figure 2As shown, the main cutting edge 2, the tool tip curve 9, the connecting edge 4, and the wiper edge 3 on the same side cutting surface A are centrally symmetrical, that is, there are two main cutting edges 2, tool tip curve 9, connecting edge 4, and wiper edges 3 on the same side cutting surface A, and they are arranged centrally symmetrically.

[0051] The blade body 1 is surrounded by a circular arc concave surface 16 located on the wiper edge flank 8 for reducing cutting interference; the blade body 1 is provided with four sets of main cutting edges 2 and wiper edges 3, and the wiper edges 3 are connected by connecting edges 4, and the connecting edges 4 are formed by the intersection of the connecting edge rake face 10 and the connecting edge flank face 11. The adjacent cutting faces A are axially symmetrical at 90° along the axis of the blade body 1, and the opposite cutting faces A are axially symmetrical at 180° along the axis of the blade body 1. When one of the cutting faces A of the blade body 1 is severely worn, the remaining cutting faces can continue to be used, thereby improving the utilization rate of the milling cutter and reducing the consumption rate of the milling cutter.

[0052] In this embodiment, the bottom mounting surface 12, the rear mounting surface 13, the main cutting edge flank 6, the wiper edge flank 8 and the side mounting clamping surface 14 are all planes. Figure 4 and Figure 5 As shown, a screw hole 15 is provided at the center of the blade body 1, and the blade body 1 is fixed to the mounting groove of the cutter disc 19 or the cutter rod through the screw hole 15. The blade body 1 is installed on the cutter disc 19, and the radial mounting back angle 18 of the blade body 1 on the mounting groove is 18.5°, and the axial mounting front angle 17 on the mounting groove is 91.8072°. The axial mounting front angle 17 and the radial mounting back angle 18 of this milling cutter on the cutter disc are reasonably designed, which reduces the friction between the back tool face and the workpiece, which can not only improve the cutting efficiency of the tool, but also reduce the cutting heat and force, and extend the service life of the tool.

[0053] The blade body 1 is installed on the cutter disc 19, and has three mounting surfaces acting simultaneously, wherein the two adjacent surfaces at the bottom of the same side cutting surface A serve as the bottom mounting surface 12 and the rear mounting surface 13, and the side clamping surface 14 serves as the mounting side surface to fix and clamp the blade body 1, so that the blade body 1 and the cutter disc 19 can be tightly assembled when they are installed in conjunction. In the specific implementation process, an identification number 20 is engraved on the side clamping surface 14 to improve recognition and facilitate the installation of the blade body 1 on the cutter disc 19 or the tool rod.

[0054] The same or similar numbers in the drawings correspond to the same or similar parts; the positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent. Obviously, the above-described embodiments of the utility model are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A vertically mounted four-sided eight-edged indexable shoulder milling cutter, characterized in that: The blade body comprises four cutting surfaces, each of which is provided with a main cutting edge, a wiper edge, a main cutting edge rake face, a main cutting edge flank face, a wiper edge rake face, a wiper edge flank face, a bottom mounting surface and a back mounting surface, and each of the main cutting edge, the wiper edge, the main cutting edge rake face, the main cutting edge flank face, the wiper edge rake face, the wiper edge flank face, the bottom mounting surface and the back mounting surface is a pair; the blade body is a rectangular parallelepiped structure; The main cutting edge is formed by the intersection of the main cutting edge rake face and the main cutting edge flank face; the wiper edge is formed by the intersection of the wiper edge rake face and the wiper edge flank face; the main cutting edge and the wiper edge are connected by a tool tip curve; The blade body is provided with a side clamping surface, and the side clamping surface is square.

2. A vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 1, characterized in that: The flank surface of the wiper blade is connected with an arc concave surface, and the arc concave surface is arranged around the blade body.

3. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 1, characterized in that: The adjacent cutting surfaces are axially symmetrical at 90° along the axis of the blade body, and the opposite cutting surfaces are axially symmetrical at 180° along the axis of the blade body.

4. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 3, characterized in that: A pair of main cutting edges, a tool tip curve, a connecting edge and a wiper edge on the same side cutting surface are centrally symmetrical.

5. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 4, characterized in that: The wiper blades are connected by a connecting blade, and the connecting blade is formed by the intersection of a connecting blade rake surface and a connecting blade flank surface.

6. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 5, characterized in that: The curvature of the wiper edge is in the range of 660° to 1720°.

7. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 1, characterized in that: The included angle between the main cutting edge and the vertical line of the bottom mounting surface on the same side is 85°, and the included angle between the flank of the wiper edge and the vertical line of the bottom mounting surface on the same side is 80°.

8. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 1, characterized in that: The bottom mounting surface, the rear mounting surface, the main cutting edge flank surface, the wiper edge flank surface and the side clamping surface are all planes.

9. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 1, characterized in that: A screw hole is provided at the center of the blade body, and the blade body is fixed to the installation groove of the cutter disc or the cutter rod through the screw hole.

10. The vertically mounted four-sided eight-edged indexable shoulder milling cutter according to claim 9, characterized in that: The radial installation back angle of the blade body installed on the installation groove is 18.5°, and the axial installation front angle on the installation groove is 91.8072°.

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