Alloy reamer with breaking edge

Abstract

The utility model discloses an alloy reamer with a breaking edge, and relates to the technical field of reamers. The alloy reamer with the breaking edge comprises a reamer handle and a breaking edge, the cutter head is connected with one end of the cutter handle; the multiple cutting edges are arranged in the circumferential direction of the tool bit and extend in the axial direction of the tool bit; the cutting edge cutting edge angle is arranged at one end, far away from one side of the cutter handle, of the cutting edge; and a first cutting edge outer diameter disposed adjacent to the cutting edge cutting edge angle and located on the cutting edge; the multiple cutting edges are provided with second cutting edge outer diameters close to the first cutting edge outer diameter correspondingly, so that the alloy reamer is provided with a breaking edge. The reamer solves the problems that the roughness of holes for special purposes is required to be Ra1.6-Ra3.2, the hole diameter tolerance is H7 precision, the form and location tolerance precision of a conventional reamer can meet the product drawing requirement, but the roughness cannot meet the machining requirement due to the fact that the machined surface is too bright.

Description

Technical Field

[0001] The utility model relates to the technical field of reamer, in particular to an alloy reamer with a breaking blade. Background Art

[0002] Reamers are commonly used tools in machining and are widely used in reaming processes.

[0003] The main performance of existing reamers is to improve the machining accuracy of the processed holes and reduce the surface roughness. However, the roughness of some special purpose holes is required to be between Ra1.6 and Ra3.2, and the hole diameter tolerance is H7. At this time, the shape and position tolerance accuracy of conventional reamers can meet the requirements of product drawings, but the roughness of the machined surface is often too bright and cannot meet the machining requirements. There is no effective solution to the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an alloy reamer with a breaking blade to solve the above-mentioned problems existing in the prior art.

[0005] Technical solution: Alloy reamer with breaking blade, including:

[0006] Handle;

[0007] A knife head connected to one end of the knife handle;

[0008] A plurality of cutting edges are arranged along the circumference of the cutter head and extend along the axial direction of the cutter head;

[0009] A main rake angle of the cutting edge, which is arranged at an end of the cutting edge away from the handle; and

[0010] a first cutting edge outer diameter, disposed adjacent to the cutting edge main rake angle and located on the cutting edge;

[0011] Among them, a second cutting edge outer diameter close to the first cutting edge outer diameter is respectively arranged on a plurality of the cutting edges, so that the alloy reamer has a breaking edge.

[0012] Preferably, a transition portion is provided between the cutting edge and the tool handle and is arranged adjacent to the outer diameter of the second cutting edge.

[0013] Preferably, the outer diameter of the second cutting edge is the outer diameter of the breaking edge.

[0014] Preferably, the outer diameter of the first cutting edge is 0.01-0.015 mm smaller than the outer diameter of the second cutting edge, so as to control the allowance of the processed hole.

[0015] Preferably, a true edge band is provided on the outer diameter of the second cutting edge.

[0016] Preferably, the number of the true cutting edges is three.

[0017] Preferably, the spacing between the true cutting edges is 0.02-0.03 mm.

[0018] Preferably, a first through hole is formed at the center of the knife handle and the knife head.

[0019] Preferably, a second through hole is provided on the cutting edge.

[0020] Preferably, an inclined portion is provided on a side of the transition portion close to the handle.

[0021] Beneficial effect: In the embodiment of the present application, the method of adding a second cutting edge outer diameter is adopted. By respectively arranging a second cutting edge outer diameter close to the first cutting edge outer diameter on a plurality of the cutting edges, the alloy reamer has a breaking edge, thereby achieving the purpose of making the alloy reamer have a breaking edge, thereby achieving the technical effect of being able to meet the general drawing requirements of Ra1.6 to Ra3.2 when the processed product has special requirements for the roughness of the hole, thereby solving the problem that the roughness of some special-purpose holes is required to be between Ra1.6 and Ra3.2, and the aperture tolerance is H7 accuracy. At this time, the conventional reamer shape and position tolerance tolerance accuracy can meet the product drawing requirements, but the roughness of the processed surface is often too bright and cannot meet the processing requirements. Technical problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of an alloy reamer with a breaking blade of the utility model;

[0023] Figure 2 This is a front view of the alloy reamer with a breaking blade of the utility model;

[0024] Figure 3 It is a left view of the alloy reamer with a breaking blade of the utility model;

[0025] Figure 4 It is a schematic detailed view of the A part of the alloy reamer with a breaking blade of the utility model.

[0026] The figures are marked as follows: 10, tool handle; 20, tool head; 30, cutting edge; 40, cutting edge main angle; 50, first cutting edge outer diameter; 60, second cutting edge outer diameter; 601, true cutting edge band; 70, transition portion; 80, first through hole; 90, second through hole; 100, inclined portion. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; 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 it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] like Figure 1-3 As shown, the present application relates to an alloy reamer with a breaking blade. The alloy reamer with a breaking blade comprises: a shank 10; the shank 10 refers to the handle of the alloy reamer, which can achieve a good clamping and fixing effect with other parts, thereby ensuring that the alloy reamer is in a stable state, thereby achieving a precise cutting effect. Preferably, the shape of the shank 10 is cylindrical, which can achieve the effect of easy clamping and processing, and at the same time, can ensure the stability of the center of gravity during rotation.

[0032] The cutter head 20 is connected to one end of the handle 10; the cutter head 20 refers to the head of the alloy reamer, which can facilitate the processing of the required cutting edge, thereby achieving a good cutting effect. Preferably, the cutter head 20 and the handle 10 are integrally formed. The effect of improving the structural strength can be achieved, thereby achieving the effect of improving the service life.

[0033] A plurality of cutting edges 30 are arranged along the circumference of the cutter head 20 and are extended along the axial direction of the cutter head 20. By evenly arranging a plurality of cutting edges 30 on the outer surface of the cutter head 20, a good cutting effect can be achieved, thereby achieving a desired cutting aperture.

[0034] The main rake angle 40 of the cutting edge is set at one end of the cutting edge away from the handle 10, which can ensure good contact and cutting effect between the cutting end face of the alloy reamer and the cut product.

[0035] The first cutting edge outer diameter 50 is arranged adjacent to the cutting edge main rake angle 40 and is located on the cutting edge 30; it can achieve the effect of precise aperture shaping and cutting size, thereby achieving the effect of improving cutting accuracy.

[0036] Among them, a second cutting edge outer diameter 60 close to the first cutting edge outer diameter 50 is respectively provided on a plurality of the cutting edges 30, so that the alloy reamer has a breaking edge. By respectively providing a second cutting edge outer diameter 60 on a plurality of cutting edges, and the second cutting edge outer diameter 60 is close to one side of the first cutting edge outer diameter 50, the alloy reamer can have a breaking edge, so that the desired surface roughness can be machined on the surface of the formed hole.

[0037] From the above description, it can be seen that the present application achieves the following technical effects:

[0038] In the embodiment of the present application, a second cutting edge outer diameter 60 is added. By respectively arranging a second cutting edge outer diameter 60 close to the first cutting edge outer diameter 50 on a plurality of the cutting edges 30, the alloy reamer has a breaking edge, thereby achieving the purpose of making the alloy reamer have a breaking edge, thereby achieving the technical effect of being able to meet the general drawing requirements of Ra1.6 to Ra3.2 when the processed product has special requirements for the roughness of the hole, thereby solving the problem that the roughness of some special-purpose holes is required to be between Ra1.6 and Ra3.2, and the aperture tolerance is H7 accuracy. At this time, the conventional reamer shape and position tolerance tolerance accuracy can meet the product drawing requirements, but the roughness of the processed surface is often too bright and cannot meet the processing requirements. Technical problem.

[0039] Furthermore, a transition portion 70 is provided between the cutting edge 30 and the tool handle 10 and is arranged adjacent to the second cutting edge outer diameter 60. It can be understood that by providing the transition portion 70 between the cutting edge 30 and the tool handle 10, the effect of facilitating cutting processing can be achieved.

[0040] Further, the second cutting edge outer diameter 60 is a breaking edge outer diameter. It can be understood that a good breaking effect can be achieved, thereby achieving the required surface roughness.

[0041] Further, the first cutting edge outer diameter 50 is 0.01-0.015 mm smaller than the second cutting edge outer diameter 60, which is used to control the margin of the processed hole. It can be understood that the effect of facilitating the second cutting edge outer diameter 60 to perform cutting can be achieved. It should be noted that by setting it to 0.01-0.015 mm, the small margin facilitates the roughness requirement of the hole controlled by the destroying blade, and the forming size of the destroying blade is not conducive to large margin cutting, and the small margin can prevent the destroying blade from breaking.

[0042] like Figure 4 As shown, a true edge band 601 is provided on the outer diameter 60 of the second cutting edge. It can be understood that a good surface roughness processing effect of the formed hole can be achieved. At the same time, the accuracy requirement of the hole can be effectively controlled by retaining the true edge band 601 of the breaking edge.

[0043] Furthermore, the number of the true lands 601 is three. It can be understood that a good surface processing effect can be ensured while ensuring processing efficiency.

[0044] Furthermore, the spacing between the true lands 601 is 0.02-0.03 mm. It can be understood that a good surface processing effect can be achieved.

[0045] Furthermore, a first through hole 80 is provided at the center of the tool handle 10 and the tool head 20. It can be understood that a good cutting fluid supply and circulation effect can be achieved.

[0046] Furthermore, a second through hole 90 is provided on the cutting edge 30. It can be understood that it is possible to facilitate the flow of cutting fluid to the cutting edge 30, thereby achieving a cooling effect during tool processing.

[0047] Furthermore, the transition portion 70 is provided with an inclined portion 100 on one side close to the handle 10. It can be understood that by providing the inclined portion 100, a good chip removal effect can be achieved.

[0048] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. Alloy reamer with breaking blade, characterized in that: include: Handle; A knife head connected to one end of the knife handle; A plurality of cutting edges are arranged along the circumference of the cutter head and extend along the axial direction of the cutter head; A main rake angle of the cutting edge, which is arranged at an end of the cutting edge away from the handle; and a first cutting edge outer diameter, disposed adjacent to the cutting edge main rake angle and located on the cutting edge; Among them, a second cutting edge outer diameter close to the first cutting edge outer diameter is respectively arranged on a plurality of the cutting edges, so that the alloy reamer has a breaking edge.

2. The alloy reamer with a breaking blade according to claim 1, characterized in that: A transition portion is provided between the cutting edge and the tool handle and is arranged adjacent to the outer diameter of the second cutting edge.

3. The alloy reamer with a breaking blade according to claim 1, characterized in that: The outer diameter of the second cutting edge is the outer diameter of the breaking edge.

4. The alloy reamer with a breaking blade according to claim 1, characterized in that: The outer diameter of the first cutting edge is 0.01-0.015 mm smaller than the outer diameter of the second cutting edge, which is used to control the allowance of the processed hole.

5. The alloy reamer with a breaking blade according to claim 1, characterized in that: A true margin is arranged on the outer diameter of the second cutting edge.

6. The alloy reamer with a breaking blade according to claim 5, characterized in that: The number of the true blade bands is three.

7. The alloy reamer with a breaking blade according to claim 5, characterized in that: The spacing of the true edge bands is 0.02-0.03 mm.

8. The alloy reamer with a breaking blade according to claim 1, characterized in that: A first through hole is formed at the center of the knife handle and the knife head.

9. The alloy reamer with a breaking blade according to claim 1, characterized in that: A second through hole is formed on the cutting edge.

10. The alloy reamer with a breaking blade according to claim 2, characterized in that: The transition portion is provided with an inclined portion on one side close to the knife handle.

Images