CN217253134U

CN217253134U - Single-edge straight flute slotting cutter

Info

Publication number: CN217253134U
Application number: CN202220987681.5U
Authority: CN
Inventors: 韩兴乾
Original assignee: Shenzhen Jinzhou Precision Technology Corp
Current assignee: Shenzhen Jinzhou Precision Technology Corp
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-23
Anticipated expiration: 2032-04-26

Abstract

The utility model provides a single-edge straight flute slotting cutter, which comprises a cutter bar, wherein the end surface of the cutter bar is provided with a single cutting edge structure, the cutting edge structure is a cutting edge protruding out of the end surface, and the cutting edge structure comprises a main cutting surface positioned at the front end of the cutting edge, a first cutting surface positioned at one side, a second cutting surface positioned at the other side and a front cutter surface positioned between the second cutting surface and the first cutting surface; one end of the second cutting surface is connected with the main cutting surface, and the other end of the second cutting surface is connected with the end surface of the cutter bar; one end of the front cutter face is connected with the main cutting face, and the other end of the front cutter face is connected with a machining guide groove for chip removal; the cutting edge structure has a main cutting edge formed by the intersection of a main cutting surface and a rake surface, a first cutting edge formed by the intersection of a first cutting surface and a rake surface, and a second cutting edge formed by the intersection of a second cutting surface and a rake surface. The utility model provides a single-edge straight flute slotting cutter can process arbitrary specification cylinder platform, simple structure, easily processing, and is with low costs.

Description

Single-edge straight flute slotting cutter

Technical Field

The utility model belongs to the technical field of the slotting cutter, especially, relate to a milling cutter is inserted to single-blade straight flute.

Background

In the prior art, most of the shell grooves of mobile phones and notebook computers are made of aluminum magnesium alloy. When the metal shell is machined, a plurality of cylindrical technological tables and screw hole cylinders need to be manufactured, the specification ranges of the cylindrical technological tables and the screw hole cylinders are wide, and two-edge slotting cutters are mostly adopted for machining at present.

In the prior art, the distance between two edges of the milling cutter for machining the small round table or the small cylinder is the diameter of the small round table or the small cylinder, when the diameter is too small, the distance between the two edges is required to be small enough, namely, the inner diameter of the milling cutter is too small, so that a grinding wheel cannot be machined; the height of the two edges is the height of a small round table or a small cylinder to be machined, the large height is required to be large, and when the height-diameter ratio of the cylindrical table is too large, namely the inner diameter of the milling cutter is too deep, the grinding wheel cannot be machined; therefore, when the double-edge slotting cutter is produced and manufactured, the machining requirement of the double-edge slotting cutter on the cutter is higher, the increasing difficulty in machining is even difficult to realize, the diameter of the circular truncated cone or the cylinder cannot be too small, the height-diameter ratio cannot be too large, and the size range of a product which can be machined is also limited. The above situations all result in that the two-edge slotting cutter meeting specific requirements cannot be machined, and the machining of parts is not referred to.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a milling cutter is inserted to single-blade straight flute, it has covered two swords completely and has inserted milling cutter's process range, arbitrary specification cylinder platform can be processed to single-blade slotting cutter, and simple structure, easily processing, low in manufacturing cost.

The technical scheme of the utility model is that: a single-edge straight flute slotting cutter comprises a cutter bar, wherein a single cutting edge structure is arranged on the end face of the cutter bar and is a cutting edge protruding out of the end face, and the cutting edge structure comprises a main cutting face positioned at the front end of the cutting edge, a first cutting face positioned on one side of the cutting edge, a second cutting face positioned on the other side of the cutting edge and a rake face positioned between the second cutting face and the first cutting face; one end of the second cutting surface is connected with the main cutting surface, and the other end of the second cutting surface is connected with the end surface of the cutter bar; one end of the front cutter face is connected with the main cutting face, and the other end of the front cutter face is connected with a machining guide groove for chip removal; the cutting edge structure has a main cutting edge formed by the intersection of the main cutting surface and the rake surface, a first cutting edge formed by the intersection of the first cutting surface and the rake surface, and a second cutting edge formed by the intersection of the second cutting surface and the rake surface.

As a further improvement of the present technical solution, a first intersection line is formed by the intersection between the first cutting surface and the main cutting surface, the main cutting surface has a first cutting line, one end of the first cutting line intersects with the main cutting edge, the other end of the first cutting line intersects with the first intersection line, the cutting edge structure is cut along the first cutting line to form a first cutting surface, and one end of the first cutting surface is connected with the end surface of the cutter bar.

As a further improvement of the technical solution, the second cutting surface intersects with the main cutting surface to form a second intersecting line, the main cutting surface has a second cutting line, one end of the second cutting line intersects with the first cutting line, the other end of the second cutting line intersects with the first intersecting line, the cutting edge structure is cut along the second cutting line to form a second cutting surface, and one end of the second cutting surface is connected with the end surface of the cutter bar.

As a further improvement of the present technical solution, an included angle between the first tangent plane and a tangent line outside the cutter bar is a first relief angle, and the first relief angle is 8 ° to 12 °.

As a further improvement of the present technical solution, an included angle between the second tangent plane and a tangent line outside the cutter bar is a second relief angle, and the second relief angle is 22 ° to 28 °.

As a further improvement of the technical scheme, an included angle between the second cutting edge and the axis of the cutter bar is 2-5 degrees.

As a further improvement of the present technical solution, an included angle between the second cutting edge and an axis of the cutter bar is 3 °.

As a further improvement of the present solution, an angle between the main cutting edge and the axis of the tool bar is 75 ° to 80 °.

As a further improvement of the technical scheme, the main cutting edge is provided with a grinding surface which is partially ground along the radial direction.

As a further improvement of the technical scheme, the rear end of the cutting edge is integrally connected with the end surface of the cutter bar; the single-edge straight flute slotting cutter is made of hard alloy materials.

The utility model provides a milling cutter is inserted to single-blade straight flute, it has covered two swords completely and has inserted milling cutter's application range, no matter be the round platform of diameter undersize, highly too big round platform and the big round platform of high footpath ratio, all can by milling cutter processing is inserted to the single-blade, and the milling cutter is machinable is inserted to the single-blade promptly arbitrary specification cylinder platform, the round platform finished product of processing does not receive the restriction of size, and milling cutter is inserted to the single-blade processing is simple high-efficient, low in manufacturing cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a single-edge straight flute slotting cutter according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a single-edge straight flute slotting cutter according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a single-edge straight flute slotting cutter according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a single-edge straight flute slotting cutter according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a single-edge straight flute slotting cutter according to an embodiment of the present invention;

fig. 6 is a partially enlarged schematic view at a in fig. 4.

Reference numbers in the figures:

100-a cutter bar, 10-an end face, 11-a second cutting face, 12-a main cutting face, 13-a first cutting face, 14-a processing guide groove, 15-a first cutting face, 16-a second cutting face, 17-a grinding face and a rake face; 110-second cutting edge, 120-main cutting edge, 130-first cutting edge, 121-first intersection line, 122-second intersection line, 123-first cutting line, 124-second cutting line.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.

In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is based on the orientation or positional relationship shown in the drawings or the conventional placement state or use state, and it is only for convenience of description and simplification of description, but does not indicate or imply that the structures, features, devices or elements referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and various combinations of features/embodiments are not separately described in order to avoid unnecessary repetition in the present disclosure.

As shown in fig. 1 to 6, the embodiment of the present invention provides a milling cutter is inserted to straight flute of single-edge, including cutter arbor 100, the terminal surface 10 of cutter arbor 100 is provided with single cutting edge structure, and the cutting edge structure is the cutting edge that protrudes from terminal surface 10, and the rear end of cutting edge is connected in terminal surface 10 of cutter arbor 100 integratively promptly. The cutting edge structure is a straight flute type cutting edge, the cutting edge structure comprises a main cutting surface 12 positioned at the front end of the cutting edge, a first cutting surface 13 positioned on one side of the cutting edge, a second cutting surface 11 positioned on the other side of the cutting edge, and a rake surface 23 positioned between the second cutting surface 11 and the first cutting surface 13, and the rake surface 23 is also positioned on the side surface of the cutting edge; one end of the second cutting surface 11 is connected with the main cutting surface 12, and the other end of the second cutting surface 11 is connected with the end surface 10 of the cutter bar 100; one end of the rake face 23 is connected with the main cutting face 12, and the other end of the rake face 23 is connected with the machining guide groove 14 for chip removal; specifically, the cutting edge structure protrudes from the end surface 10, and in some embodiments, referring to fig. 1, an outer peripheral side of the cutting edge structure is surrounded by the first cutting surface 13, the second cutting surface 11 and the rake surface 23; the rake surface 23 and the groove surface of the machining guide groove 14 are relief surfaces formed by the tool during the machining and manufacturing process, and in some embodiments, as shown in fig. 1, one surface of the machining guide groove 14 is coplanar with the rake surface 23, and the top of another adjacent surface of the machining guide groove 14 is connected to the end surface 10 and to the side surface of the tool holder 100; in some embodiments, as shown in fig. 3 and 4, the machining guide groove 14 is substantially in an inclined arc surface shape, the machining guide groove 14 is formed by removing the material of the tool holder 100 downward along the rake surface 23 and contacting the end surface 10, the groove surface of the machining guide groove 14 may be divided into two sections, the upper section is a straight section, the front end is connected to the bottom of the rake surface 23 and coplanar with the rake surface 23, the lower section is an arc surface section, the front end is connected to the bottom of the straight section, the tail end penetrates through the outer side surface of the tool holder 100, that is, one end of the machining guide groove 14 extends to the side surface of the tool holder 100, and the other end of the machining guide groove 14 is connected to the rake surface 23. The cutting edge structure includes a main cutting edge 120 formed by the intersection of the main cutting surface 12 and the rake surface 23, a first cutting edge 130 formed by the intersection of the first cutting surface 13 and the rake surface 23, and a second cutting edge 110 formed by the intersection of the second cutting surface 11 and the rake surface 23. More specifically, both ends of the first cutting edge 130 and the second cutting edge 110 extend to both ends of the main cutting edge 120, and are boundaries of the rake surface 23. The milling cutter is inserted to the twolip that is used for processing little round platform or small circle post among the prior art, and the product size range of processing is restricted (round platform or cylindrical diameter can not the undersize, and the high footpath ratio can not be too big), and the utility model provides a milling cutter is inserted to single-edge straight flute, no matter be the round platform of diameter undersize, highly too big round platform and the too big round platform of high footpath ratio, all can by milling cutter processing is inserted to the twolip, has covered the processing scope that milling cutter was inserted to the twolip completely, and the single-edge milling cutter can be processed arbitrary specification cylinder or round platform promptly, and the cylinder of processing, round platform finished product do not receive the restriction of size, and application scope is more extensive, and milling cutter's simple structure is inserted to the singlelip, and the processing technology of cutter itself is simple, and the processing degree of difficulty is greatly reduced, low in manufacturing cost.

In this embodiment, the included angle between the tangent line of the machining guide groove 14 and the axis of the tool holder 100 may be in the range of 30 ° to 50 ° (45 ° in this embodiment), which facilitates the guiding and sliding out of chips when the single-edge straight flute slotting cutter is used for cutting.

Further, as shown in fig. 1, 5 and 6, a first intersection line 121 is formed by the intersection between the first cutting surface 13 and the main cutting surface 12, the main cutting surface 12 has a first cutting line 123, one end of the first cutting line 123 intersects with the main cutting edge 120, the other end of the first cutting line 123 intersects with the first intersection line 121, the cutting edge structure is cut along the first cutting line 123 toward the end surface 10 to form a first cutting surface 15, one end of the first cutting surface 15 is connected with the end surface 10 of the tool holder, the other end of the first cutting surface 15 is connected with the main cutting surface 12, one side of the first cutting surface 15 is connected with the rake surface 23, and the other side of the first cutting surface 15 is connected with the first cutting surface 13. The first cutting surface 15 is parallel to a tangent line n on the outer side of the tool holder 100 (as shown in fig. 5, the radius op of the tool holder is parallel to the main cutting edge 120, the tangent line n is tangent to the outer side of the tool holder at a point p, that is, the tangent line n is perpendicular to the straight line op), and an included angle between the first cutting line 123 and the tangent line n is a first relief angle α 1, which is 8 ° to 12 °. In some embodiments, the cutting edge structure is formed by the first cutting surface 13, the second cutting surface 11, the rake surface 23, and the first cutting surface 15; in specific application, during rough machining, the first clearance angle alpha 1 takes a small value, and during fine machining, the first clearance angle alpha 1 takes a large value; in this embodiment, the first rear angle α 1 is 10 °, and in other embodiments, the angle of the first rear angle α 1 may be selected according to the property and hardness of the processing material.

Further, a second intersection line 122 is formed by the intersection between the second cutting surface 11 and the main cutting surface 12, the main cutting surface 12 has a second cutting line 124, one end of the second cutting line 124 intersects the first cutting line 123, the other end of the second cutting line 124 intersects the first intersection line 121, the cutting edge structure is cut along the second cutting line 124 toward the end surface 10 to form a second cutting surface 16, one end of the second cutting surface 16 is connected to the end surface 10 of the cutter bar, the other end of the second cutting surface 16 is connected to the main cutting surface 12, one side of the second cutting surface 16 is a first cutting surface 15, and the other side of the second cutting surface 16 is the first cutting surface 13. In this case, the cutting edge structure is defined by the first cutting surface 13, the second cutting surface 11, the rake surface 23, the first cutting surface 15, and the second cutting surface 16; in another embodiment, the other end of the second cutting line 124 intersects the second intersecting line 122, as shown in fig. 4 and 6, the other side of the second cutting surface 16 is the second cutting surface 11, and the cutting edge structure is surrounded by the second cutting surface 11, the rake surface 23, the first cutting surface 15, and the second cutting surface 16; an included angle between the second tangent plane 16 and a tangent line outside the cutter bar 100 is a second relief angle α 2, and the second relief angle α 2 is 22 ° to 28 °. In this embodiment, the second clearance angle α 2 is 25 °, and the specific angle of the second clearance angle α 2 may be selected according to the property and hardness of the processing material.

Further, the included angle θ 2 between the second cutting edge 110 and the axis m of the tool bar 100 is 2 ° to 5 °. In this embodiment, the included angle between the second cutting edge 110 and the axis m of the tool bar 100 is 3 °; of course, in other embodiments, the value of θ 2 may be different, so that the second cutting edge 110 is better used for machining the circular truncated cone. The end face of the tool holder 100 is equally divided into four sectors with central angles of 90 degrees, and the cutting edge structure may be located in the region of only one of the central angles.

Further, an included angle θ 1 between the main cutting edge 120 and the axis m of the tool bar 100 is 75 ° to 80 °, in this embodiment, the included angle θ 1 between the main cutting edge 120 and the axis m of the tool bar 100 is 80 °, and the cutting effect is good.

Further, as shown in fig. 4, the main cutting edge 120 has a grinding surface 17 partially ground in a radial direction near the rake surface 23, and the specific width and inclination of the grinding surface 17 are adjustable, so that the cutting performance is good. The width of the grinding surface 17 may be the same as the width of the second cut surface 16.

Further, the single-edge straight flute slotting cutter is made of hard alloy materials, namely the cutter bar 100 and the cutting edge are integrally connected and made of hard alloy materials, so that the structure is simple and reliable, and the cutter is more durable.

The embodiment of the utility model provides a still provide a milling cutter is inserted to single-edge straight flute processing manufacturing step for the milling cutter is inserted to the above-mentioned single-edge straight flute of processing, include: machining the cutter bar 100 with a cutting edge structure at the front end through a grinding machine; specifically, a centerless grinding machine is adopted for processing, fine grinding processing is carried out after grooving coarse grinding processing, the diameter size of the cutter bar 100 is controlled, and the surface roughness of the cutter bar 100 reaches Ra0.2;

grinding the first cutting edge 130 on the side of the rough cutting edge structure; specifically, the outer diameter of the tool bar 100 is controlled while the first cutting edge 130 performs a cutting function by performing rough grinding on the first cutting face 13 and the rake face 23, respectively, and then performing finish grinding on the first cutting face 13 and the rake face 23, respectively.

Grinding the second cutting edge 110 on the other side of the rough cutting edge structure; specifically, the inner diameter d1 (i.e., the outer diameter for machining the circular truncated cone) is controlled by performing rough grinding and finish grinding on the second cutting surface 11, respectively, while allowing the second cutting edge 110 to perform a cutting function.

The main cutting edge 120 is ground at the end of the roughing of the cutting edge structure. Specifically, the main cutting edge 120 is made to perform a cutting function by performing rough grinding on the main cutting surface 12 and then performing finish grinding, (i.e., for machining the outer diameter of the circular truncated cone). First and second relief angles are machined as needed.

The embodiment of the utility model provides a milling cutter is inserted to single-blade straight flute has covered the range of processing that milling cutter was inserted to two swords completely, no matter be the round platform of diameter undersize, highly too big round platform and the high footpath than too big round platform, all can by milling cutter processing is inserted to the single-blade, and single-blade is inserted milling cutter is workable promptly arbitrary specification cylinder platform, the round platform finished product of processing do not receive the restriction of size, and single-blade is inserted milling cutter simple structure, easily processing, low in manufacturing cost.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. The single-edge straight flute slotting cutter is characterized by comprising a cutter bar, wherein a single cutting edge structure is arranged on the end surface of the cutter bar, the cutting edge structure is a cutting edge protruding out of the end surface, and the cutting edge structure comprises a main cutting surface positioned at the front end of the cutting edge, a first cutting surface positioned on one side of the cutting edge, a second cutting surface positioned on the other side of the cutting edge and a rake surface positioned between the second cutting surface and the first cutting surface; one end of the second cutting surface is connected with the main cutting surface, and the other end of the second cutting surface is connected with the end surface of the cutter bar; one end of the front cutter face is connected with the main cutting face, and the other end of the front cutter face is connected with a machining guide groove for chip removal; the cutting edge structure has a main cutting edge formed by the intersection of the main cutting surface and the rake surface, a first cutting edge formed by the intersection of the first cutting surface and the rake surface, and a second cutting edge formed by the intersection of the second cutting surface and the rake surface.

2. The single-edged straight flute slotting milling cutter according to claim 1 wherein the intersection between the first cutting face and the main cutting face forms a first intersection line, the main cutting face having a first cutting line, one end of the first cutting line intersecting the main cutting edge, the other end of the first cutting line intersecting the first intersection line, cutting the cutting edge structure along the first cutting line forming a first cutting face, one end of the first cutting face being contiguous with the end face of the cutter shank.

3. The single-edged straight slot slotting cutter as defined in claim 2, wherein the intersection between said second cutting face and said main cutting face forms a second intersection line, said main cutting face having a second cutting line, one end of said second cutting line intersecting said first cutting line, the other end of said second cutting line intersecting said first intersection line, cutting said cutting edge structure along said second cutting line to form a second cutting face, one end of said second cutting face being contiguous with the end surface of said shank.

4. The single-edged straight flute slotting cutter as claimed in claim 2, wherein the angle between the first tangent plane and a tangent on the outside of the shank is a first clearance angle, the first clearance angle being 8 ° to 12 °.

5. A single-edge straight flute slotting cutter as claimed in claim 3 wherein the angle between the second cutting face and a tangent to the outside of the shank is a second relief angle, the second relief angle being 22 ° to 28 °.

6. A single-edge straight flute slotting milling cutter as claimed in claim 1 wherein the angle between the second cutting edge and the axis of the cutter bar is between 2 ° and 5 °.

7. A single-edged straight flute slotting cutter as claimed in claim 1, wherein the angle between the second cutting edge and the axis of the tool shank is 3 °.

8. A single-edge straight flute slotting cutter as claimed in claim 1 wherein the angle between the main cutting edge and the axis of the cutter bar is 75 ° to 80 °.

9. A single-edge straight flute slotting cutter as claimed in claim 1 wherein the main cutting edge has a ground face at the radial portion.

10. A single-edge straight flute slotting cutter as claimed in any one of claims 1 to 9 wherein the rear end of the cutting edge is integrally connected to the end face of the cutter bar; the single-edge straight flute slotting cutter is made of hard alloy materials.