CN210848519U - Left-right turning combined T-shaped cutter - Google Patents

Abstract

The utility model belongs to the technical field of the cutter, concretely relates to control and revolve combination T type sword, including the handle of a knife, keep away vacancy and cutting portion, keep away vacancy and set up between handle of a knife and cutting portion, the outside interval of cutting portion is provided with revolves to opposite first sword and the second sword that cuts, and the outside of cutting portion is still spaced to be provided with revolves to opposite first dysmorphism groove and second dysmorphism groove, and first sword that cuts is connected with first dysmorphism groove, and the second sword that cuts is connected with second dysmorphism groove. The utility model discloses solved the problem that produces the burr easily when processing the concave groove effectively, the cutter can realize simultaneously to the work piece about the chip removal of orientation about facing (operation) and can realize carrying on simultaneously, both improved workpiece surface's smooth finish and off-the-shelf quality, also avoided the work piece to produce the phenomenon that the burr turns up, still saved the time of tool changing and tool setting effectively, improved the efficiency of production.

Description

A left-right combined T-knife

technical field

The utility model belongs to the technical field of knives, in particular to a left-right rotation combined T-shaped knife.

Background technique

A T-knife is a machining tool that can be assembled on a milling machine to mill a groove or keyway in a workpiece. However, the applicant found that: the existing T-shaped cutter only has one-way cutting force, when the workpiece is machined to form a groove or a keyway, the upper and lower surfaces cannot be machined at the same time, and the upper and lower surfaces cannot be simultaneously removed, and the workpiece surface is prone to burrs The phenomenon of eversion. Therefore, there is an urgent need to develop a new type of highly integrated machining tool that can effectively improve the surface finish of the workpiece and save the time for tool change and tool setting.

Utility model content

The purpose of this utility model is to: in view of the deficiencies of the prior art, to provide a left-right combined T-shaped cutter, which effectively solves the problem that burrs are easily generated when machining concave grooves, and the cutter can simultaneously process the upper and lower surfaces of the workpiece and can The chip removal in the upper and lower directions is realized at the same time, which not only improves the surface finish of the workpiece and the quality of the finished product, but also avoids the phenomenon of burr and eversion of the workpiece, and effectively saves the time for tool change and tool setting, and improves the production efficiency. .

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A left-right-rotating combined T-shaped knife, comprising a tool handle, a hollow part and a cutting part, the hollow part is arranged between the tool handle and the cutting part, and the outer side of the cutting part is provided with a rotation direction at intervals Opposite first cutting edge and second cutting edge, the outer side of the cutting part is further provided with a first special-shaped groove and a second special-shaped groove with opposite rotation directions, and the first cutting edge is connected with the first special-shaped groove , the second cutting edge is connected with the second special-shaped groove, the first cutting edge and the second cutting edge with opposite directions are used to process the workpiece to form a groove or a keyway to simultaneously process the upper and lower surfaces. The first special-shaped groove and the second special-shaped groove opposite to each other can realize the cooling effect of simultaneous chip removal and internal cooling during processing.

Further, the first special-shaped groove is a left-handed helical groove or a left-handed oblique groove, the second special-shaped groove is a right-handed helical groove or a right-handed inclined groove, and the rotation direction of the first special-shaped groove and the first cutting edge is The same, the second special-shaped groove and the second cutting edge have the same rotation direction, the special-shaped groove and the cutting edge have the same rotation direction, that is, the machining direction and the chip removal direction are opposite, and the machining and chip removal do not affect each other, which is conducive to more stable It can realize the simultaneous top and bottom chip removal when the workpiece is machined to form grooves or keyways.

Further, the helix angles of the left helical groove and the right helical groove are both 1-50°.

Further, the helix angles of the left helical groove and the right helical groove are both 20° to 45°.

Further, the shapes of the left-handed inclined grooves and the right-handed inclined grooves are both "L"-shaped, and the opening angles of the left-handed inclined grooves and the right-handed inclined grooves are both 1 to 45°.

Further, the opening angles of the left-handed oblique groove and the right-handed oblique groove are both 5-30°.

Further, both the first special-shaped groove and the second special-shaped groove have a concave structure, and the width of the second special-shaped groove is larger than the width of the first special-shaped groove.

Further, the number of the first cutting edges and the number of the second cutting edges are both N, and N≧2.

Further, the diameter of the shank is D ₁ , the diameter of the hollow portion is D ₂ , and the diameter of the cutting portion is D ₃ , which satisfy the relation: D ₃ ≥D ₁ >D ₂ .

Further, the diameter of the shank is D ₁ , the diameter of the hollow portion is D ₂ , and the diameter of the cutting portion is D ₃ , which satisfy the relation: D ₁ >D ₃ >D ₂ .

Further, the front end surface of the cutting part is provided with a first end surface cutting edge, the rear end surface of the cutting part is provided with a second end surface cutting edge, the front edge of the first cutting edge and the second cutting edge The front cutting edge of the first cutting edge is connected to the first end face cutting edge, and the rear cutting edge of the first cutting edge and the rear cutting edge of the second cutting edge are both connected to the second end face cutting edge.

Further, the leading edge of the first cutting edge, the leading edge of the second cutting edge and the first end face cutting edge are all arcs, and the radius of the arc is 2 to 20 μm.

Further, the rear edge tip of the first cutting edge, the rear edge tip of the second cutting edge and the edge tip of the second end face cutting edge are all arcs, and the radius of the arc is 2 to 20 μm.

Further, an outer side of the cutting portion is further provided with an axial cutting edge at intervals, and the axial cutting edge is connected with the first cutting edge or the second cutting edge.

The beneficial effects of the present invention are as follows: 1) the outer side of the cutting portion of the present utility model is provided with a first cutting edge and a second cutting edge with opposite directions of rotation at intervals, and the outer side of the cutting portion is also provided with a first cutting edge with opposite directions of rotation at intervals. The combination of the special-shaped groove and the second special-shaped groove, the first cutting edge and the second cutting edge with opposite directions make the T-shaped cutter have up and down bidirectional cutting force, and realize the simultaneous machining of the upper and lower surfaces of the workpiece. The two special-shaped grooves can provide space for chip removal for the T-shaped cutter, which can realize simultaneous chip removal from the top and bottom and the cooling effect of internal cooling during processing, and improve the processing efficiency of the workpiece; 2) In addition, the first cutting edge and the first special-shaped groove The second cutting edge is connected with the second special-shaped groove, which effectively improves the chip removal effect and integration effect of the T-shaped knife, and avoids the phenomenon that multiple different tools need to be coordinated to complete the machining when machining the workpiece. It effectively saves the time for tool change and tool setting; 3) The left and right rotating T-shaped knife avoids the occurrence of burrs on the upper or lower surface of the workpiece when machining the workpiece. The number of use and the times of tool setting improve the processing efficiency and processing accuracy, improve the surface finish of the workpiece and the quality of the finished product, and further reduce the production cost of the product.

Description of drawings

FIG. 1 is a front view of Embodiment 1 of the present utility model.

FIG. 2 is a left side view of Embodiment 1 of the present invention.

FIG. 3 is an enlarged view of part A1 in FIG. 2 .

FIG. 4 is an enlarged view of part A2 in FIG. 2 .

FIG. 5 is a perspective view of Embodiment 1 of the present invention.

6 is a perspective view of Embodiment 2 of the present invention.

Among them: 1-tool handle; 2-vacuum part; 3-cutting part; 31-first cutting edge; 32-second cutting edge; 33-first end-face cutting edge; 34-second end-face cutting edge; 35-shaft To the cutting edge; 41 - the first special-shaped groove; 42 - the second special-shaped groove.

Detailed ways

If certain terms are used in the description and claims to refer to specific components, those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The description and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned in the entire specification and claims, "comprising" is an open-ended term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range, and basically achieve technical effects.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", horizontal" etc. The orientation or positional relationship shown in the figures is only for the convenience of describing the present invention 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 Limitations of the present invention.

In the utility model, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present utility model.

Example 1

As shown in Figures 1 to 5, a left-right rotating combined T-shaped knife includes a handle 1, a hollow part 2 and a cutting part 3, the hollow part 2 is arranged between the handle and the cutting part 3, and the cutting part 3 is The outer side is provided with a first cutting edge 31 and a second cutting edge 32 with opposite rotation directions, and the outer side of the cutting portion 3 is also provided with a first special-shaped groove 41 and a second special-shaped groove 42 with opposite rotation directions at intervals. The first cutting edge 31 Connected with the first special-shaped groove 41 , the second cutting edge 32 is connected with the second special-shaped groove 42 .

Preferably, the first special-shaped groove 41 is a left-handed helical groove, the second special-shaped groove 42 is a right-handed L-shaped inclined groove, the helix angle of the left-handed helical groove is W, W=25°, and the opening angle of the right-handed L-shaped inclined groove is K, K=30°, the first special-shaped groove 41 and the first cutting edge 31 have the same rotation direction, the second special-shaped groove 42 and the second cutting edge 32 have the same rotation direction, the first cutting edge 31 is a left-handed cutting edge, and the first cutting edge 31 is a left-handed cutting edge. The second cutting edge 32 is a right-handed cutting edge, the left-handed helical groove and the right-handed L-shaped inclined groove are both concave structures, and the width of the right-handed L-shaped inclined groove is larger than that of the left-handed helical groove.

T-shaped knife has both left-handed cutting edge and left-handed helical groove, right-handed cutting edge and right-handed L-shaped inclined groove, left-handed cutting edge and left-handed helical groove connection, right-handed cutting edge and right-handed L-shaped inclined groove connection, left-handed cutting edge and right-handed The rotary cutting edges are arranged at intervals on the outer side of the T-shaped knife cutting portion 3, the left-handed helical groove and the right-handed L-shaped oblique groove are arranged at intervals on the outer side of the T-shaped knife cutting portion 3, and there are three left-handed and right-handed cutting edges. There are also three grooves and right-handed L-shaped chutes.

The upper surface of the workpiece is processed by the left-handed cutting edge, and the lower surface of the workpiece is processed by the right-handed cutting edge. When machining the workpiece to form grooves or keyways, it effectively avoids the uniform right-handed oblique groove and cutting edge, or the uniform left-handed spiral groove and cutting edge, which can only produce burrs that turn up or can only produce burrs that turn down. Phenomenon, the left-handed cutting edge and the right-handed cutting edge are processed at the same time, and the left-handed spiral groove and the right-handed L-shaped chute are removed at the same time. The machining and chip removal do not affect each other, which avoids the phenomenon of excessive burrs and improves the surface finish of the workpiece and the finished product. The quality of the tool also reduces the number of tools used and the number of tool setting, saving the time for tool change and tool setting.

Preferably, the diameter of the shank 1 is D ₁ , the diameter of the recessed portion 2 is D ₂ , and the diameter of the cutting portion 3 is D ₃ , which satisfy the relation: D ₃ ≥D ₁ >D ₂ , the diameter of the recessed portion 2 is D 3 . If it is smaller than the diameter of the tool holder 1, the weight of the tool can be appropriately reduced and the flexibility of the tool can be improved.

Wherein, the diameter D ₁ of the tool holder 1 is 8 mm, the diameter of the recessed portion 2 is D ₂ =4 mm, and the diameter of the cutting portion 3 is D ₃ =10 mm. The tool holder 1, the recessed portion 2 and the cutting portion 3 are integrally formed. It is suitable for precision machining of small size workpieces.

Preferably, the front end face of the cutting part 3 is provided with a first end face cutting edge 33 , the rear end face of the cutting part 3 is provided with a second end face cutting edge 34 , the front edge of the first cutting edge 31 and the front end of the second cutting edge 32 The cutting edges are both connected to the first end face cutting edge 33 , and the rear cutting edge of the first cutting edge 31 and the rear cutting edge of the second cutting edge 32 are both connected to the second end face cutting edge 34 .

After the first cutting edge 31 and the second cutting edge 32 process the workpiece to form a groove or a keyway, the first end face cutting edge 33 and the second end face cutting edge 34 can machine the sidewall of the groove or the keyway, and the first end face The end faces of the cutting edge 33 and the second end face cutting edge 34 may also be respectively provided with end face chip grooves.

Preferably, in order to ensure the surface finish to be processed and prevent the chipping of the cutting edge, the cutting edge of each cutting edge of the cutting portion 3 is passivated to form a rounded edge. The cutting edge of the blade 32 , the cutting edge of the first end face cutting edge 33 and the cutting edge of the second end face cutting edge 34 are all arcs, and the radius of the arc is 2-20 μm.

The cutting edge of the first cutting edge 31 includes the cutting edge of the front cutting edge and the trailing cutting edge of the first cutting edge 31, and the cutting edge of the second cutting edge 32 includes the leading cutting edge and the trailing cutting edge of the second cutting edge 32. The cutting edge of the first cutting edge 31 and the cutting edge of the second cutting edge 32 are passivated, which can improve the processing quality of the upper and lower surfaces of the machined surface at the same time.

Preferably, the outer side of the cutting portion 3 is further provided with an axial cutting edge 35, the axial cutting edge 35 is connected with the first cutting edge 31 or the second cutting edge 32, and the axial cutting edge 35 forms a groove or a keyway for machining the workpiece The auxiliary cutting edge of the axial direction cutting edge 35 is arranged on the outer side of the cutting part 3 at intervals.

Example 2

As shown in FIG. 6 , the difference between this embodiment and Embodiment 1 is that the first special-shaped groove 41 is a left-handed inclined groove, the second special-shaped groove 42 is a right-handed inclined groove, and the opening angle of the first special-shaped groove 41 is P ₁ , P ₁ =10°, the opening angle of the second special-shaped groove 42 is P ₂ , P ₂ =15°, the rotation direction of the first special-shaped groove 41 and the first cutting edge 31 are the same, and the second special-shaped groove 42 and the second cutting edge The rotation direction of 32 is the same, the first cutting edge 31 is a left-handed cutting edge, the second cutting edge 32 is a right-handed cutting edge, the left-handed cutting edge and the right-handed cutting edge are both 3, and the left-handed and right-handed inclined grooves are also 3. indivual.

The upper surface of the workpiece is processed by the left-handed cutting edge, and the lower surface of the workpiece is processed by the right-handed cutting edge. When the workpiece is machined to form grooves or keyways, it effectively avoids the uniform right-handed oblique groove and cutting edge, or the uniform left-handed oblique groove and cutting edge, which can only cause burrs to turn up or only produce burrs to turn down. The left-handed and right-handed cutting edges are processed at the same time, and the left-handed chute and the right-handed chute are removed at the same time. The machining and chip removal do not affect each other, which avoids the phenomenon of excessive burrs, improves the surface finish of the workpiece and the quality of the finished product. The number of tools used and the times of tool setting are reduced, and the time for tool change and tool setting is saved.

The rest of the parts are the same as those in Embodiment 1, and will not be repeated here.

Example 3

The difference between this embodiment and the first embodiment is that the first special-shaped groove 41 is a left helical groove, the second special-shaped groove 42 is a right helical groove, the helix angle of the left helical groove is 40°, and the helix angle of the right helical groove is 45° , the rotation direction of the first special-shaped groove 41 and the first cutting edge 31 is the same, the rotation direction of the second special-shaped groove 42 and the second cutting edge 32 is the same, the first cutting edge 31 is a left-handed cutting edge, and the second cutting edge 32 is a right-handed cutting edge. For the turning edge, the left helical groove and the right helical groove are all concave structures, and the width of the right helical groove is larger than that of the left helical groove.

The T-shaped knife has both left-handed cutting edges and left-handed spiral grooves, right-handed cutting edges and right-handed spiral grooves, left-handed cutting edges and left-handed spiral grooves connected, right-handed cutting edges and right-handed spiral grooves connected, and left-handed cutting edges and right-handed cutting edges are arranged at intervals of T On the outer side of the cutter cutting part 3, the left helical groove and the right helical groove are arranged at an interval on the outer side of the T-shaped cutter cutting part 3, the left-handed cutting edge and the right-handed cutting edge are both 4, and the left helical groove and the right helical groove are also 4 indivual.

The upper surface of the workpiece is processed by the left-handed cutting edge, the lower surface of the workpiece is processed by the right-handed cutting edge, the left helical groove realizes the downward chip removal of the workpiece, and the right helical groove realizes the upward chip removal of the workpiece, so that the T-shaped knife is in the workpiece. When machining to form grooves or keyways, it effectively avoids the uniform right-handed spiral groove and cutting edge, or the unified left-handed spiral groove and cutting edge, which can only cause burrs to turn up or only produce burrs to turn down. The cutting edge and the right-handed cutting edge are processed at the same time, and the left helical groove and the right helical groove are processed at the same time. The processing and chip removal do not affect each other, which avoids the phenomenon of excessive burrs, improves the surface finish of the workpiece and the quality of the finished product. The number of tools used and the times of tool setting save the time of tool change and tool setting.

The diameter D ₁ =10 mm of the shank 1, the diameter D ₂ =5 mm of the recessed part 2, and the diameter D ₃ =10 mm of the cutting part 3, the tool shank 1, the recessed part 2 and the cutting part 3 are integrally formed.

The rest of the parts are the same as those in Embodiment 1, and will not be repeated here.

Example 4

The difference between this embodiment and the first embodiment is that the first special-shaped groove 41 is a left-handed L-shaped inclined groove, the second special-shaped groove 42 is a right-handed L-shaped inclined groove, and the opening angle of the left-handed L-shaped inclined groove is 35°, and the right-handed The opening angle of the L-shaped oblique groove is 40°, the first special-shaped groove 41 and the first cutting edge 31 have the same rotation direction, the second special-shaped groove 42 and the second cutting edge 32 have the same rotation direction, and the first cutting edge 31 is left-handed Cutting edge, the second cutting edge 32 is a right-handed cutting edge, the left-handed L-shaped inclined groove and the right-handed L-shaped inclined groove are both concave structures, and the width of the right-handed L-shaped inclined groove is larger than that of the left-handed L-shaped inclined groove.

T-shaped knife has both left-handed cutting edge and left-handed L-shaped inclined groove, right-handed cutting edge and right-handed L-shaped inclined groove, left-handed cutting edge and left-handed L-shaped inclined groove connection, right-handed cutting edge and right-handed L-shaped inclined groove connection, left-handed The cutting edge and the right-handed cutting edge are arranged on the outer side of the T-shaped knife cutting part 3 at intervals, the left-handed L-shaped oblique groove and the right-handed L-shaped oblique groove are arranged on the outer side of the T-shaped knife cutting part 3 at intervals, and the left-handed cutting edge and the right-handed cutting edge are both. There are 2 left-handed L-shaped chutes and 2 right-handed L-shaped chutes.

The upper surface of the workpiece is processed by the left-handed cutting edge, and the lower surface of the workpiece is processed by the right-handed cutting edge. When machining the workpiece to form grooves or keyways, the profile cutter effectively avoids the uniform right-handed oblique groove and cutting edge, or the uniform left-handed oblique groove and cutting edge, which can only produce burrs that turn up or only produce burrs that go down. The phenomenon of turning over, the left-handed cutting edge and the right-handed cutting edge are processed at the same time, the left-handed L-shaped chute and the right-handed L-shaped chute are simultaneously chip removal, machining and chip removal do not affect each other, avoiding the phenomenon of excessive burrs and improving the workpiece surface. It also reduces the number of tools used and the number of tool setting times, and saves the time for tool change and tool setting.

The diameter D ₁ =6mm of the shank 1, the diameter D ₂ =3mm of the hollow part 2, and the diameter D ₃ =7mm of the cutting part 3, the tool shank 1, the hollow part 2 and the cutting part 3 are integrally formed.

The rest of the parts are the same as those in Embodiment 1, and will not be repeated here.

Obviously, the left-right-rotating combined T-shaped cutter of the present application can simultaneously process the upper and lower surfaces of the workpiece and simultaneously perform chip removal in the upper and lower directions, which not only improves the surface finish of the workpiece and the quality of the finished product, but also effectively saves tool changes. and tool setting time, which improves the production efficiency.

Based on the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above-mentioned embodiments. Therefore, the utility model is not limited to the above-mentioned specific embodiments, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the present utility model belongs to the protection scope of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims (10)

1. A left-right combined T-shaped knife, characterized in that: it comprises a handle (1), a hollow part (2) and a cutting part (3), and the hollow part (2) is arranged on the handle (2). 1) and the cutting portion (3), a first cutting edge (31) and a second cutting edge (32) with opposite directions of rotation are provided at intervals on the outer side of the cutting portion (3). 3) The outer side is also provided with a first special-shaped groove (41) and a second special-shaped groove (42) with opposite directions at intervals, and the first cutting edge (31) is connected with the first special-shaped groove (41), so The second cutting edge (32) is connected with the second special-shaped groove (42). 2. The left-right-handed combined T-shaped knife according to claim 1, wherein the first special-shaped groove (41) is a left-handed helical groove or a left-handed oblique groove, and the second special-shaped groove (42) is a right-handed helical groove A groove or a right-handed oblique groove, the first special-shaped groove (41) and the first cutting edge (31) have the same rotation direction, and the second special-shaped groove (42) and the second cutting edge (32) of the same rotation. 3 . The left-right combined T-shaped knife according to claim 2 , wherein the helix angles of the left helical groove and the right helical groove are both 1 to 50°. 4 . 4. The left-handed combined T-shaped knife according to claim 2, wherein the left-handed oblique groove and the right-handed oblique groove have an "L" shape, and the left-handed oblique groove and the The opening angles of the right-handed oblique grooves are all 1 to 45°. 5. The left-right combined T-shaped knife according to claim 2, wherein the first special-shaped groove (41) and the second special-shaped groove (42) are both in concave structures, and the second special-shaped groove (42) has a concave structure. The width of the special-shaped groove (42) is greater than the width of the first special-shaped groove (41). 6. The left-right combined T-shaped knife according to claim 1, characterized in that: the front end face of the cutting portion (3) is provided with a first end face cutting edge (33), and the first cutting edge (31) The front edge of the second cutting edge (32) and the front edge of the second cutting edge (32) are both connected to the first end face cutting edge (33). 7. The left-right combined T-shaped knife according to claim 6, characterized in that: the leading edge of the first cutting edge (31) and the leading edge of the second cutting edge (32) Both the tip and the tip of the first end face cutting edge (33) are circular arcs, and the radius of the circular arc is 2-20 μm. 8. The left-right combined T-shaped knife according to claim 1, characterized in that: the rear end face of the cutting portion (3) is provided with a second end face cutting edge (34), and the first cutting edge (31) The rear edge of the second cutting edge (32) and the rear edge of the second cutting edge (32) are both connected to the second end face cutting edge (34). 9. The left-right combined T-shaped knife according to claim 8, characterized in that: the rear edge tip of the first cutting edge (31) and the rear edge edge of the second cutting edge (32) Both the tip and the tip of the second end face cutting edge (34) are circular arcs, and the radius of the circular arc is 2-20 μm. 10. The left-right combined T-shaped knife according to claim 1, characterized in that: the outer side of the cutting portion (3) is further provided with axial cutting edges (35) at intervals, and the axial cutting edges (35) Connect with the first cutting edge (31) or the second cutting edge (32).

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