Step reamer

Abstract

The utility model discloses a step reamer, and relates to the technical field of cutters. The step reamer comprises a reamer handle, a reamer head and a reamer head, the cutter groove part is connected with one end of the cutter handle; the second step reamer blade is connected with the cutter groove part far away from one end of the cutter handle; the first stepped reamer edge is connected with the second stepped reamer edge which is far away from one end of the cutter groove part; the first stepped reamer edge and the second stepped reamer edge are of a two-stage stepped reamer structure. The composite reamer solves the problems that most of existing composite reamers are made of high-speed steel or hard alloy, and due to limitation of cutter materials and cutter structures, the machining efficiency is low, and the service life is short.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a step reamer. Background Art

[0002] As a precision hole processing tool, the reamer is widely used in the mechanical processing production process. Through the cooperation of different processing equipment and fixtures, any part of the workpiece can be processed to meet the process requirements of the product.

[0003] Existing composite reamers are mostly made of high-speed steel or cemented carbide. Due to the limitations of tool material and tool structure, there are generally problems of low processing efficiency and poor life, and no effective solution has been proposed yet. Utility Model Content

[0004] Purpose of the utility model: to provide a step reamer to at least solve one of the problems existing in the above-mentioned prior art.

[0005] Technical solution: Step reamer, including:

[0006] Handle;

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

[0008] A second stepped reamer blade connected to the knife groove portion away from one end of the knife handle; and

[0009] A first stepped reamer blade connected to the second stepped reamer blade away from one end of the blade groove portion;

[0010] Wherein, the first stepped reamer blade and the second stepped reamer blade adopt a two-stage stepped reamer structure.

[0011] Preferably, a cooling hole is provided through the center of the tool handle.

[0012] Preferably, the knife groove portion is evenly provided with a plurality of knife grooves along its circumference, and the number of the plurality of knife grooves is six.

[0013] Preferably, the diameter of the first step reamer blade is smaller than the diameter of the second step reamer blade.

[0014] Preferably, the first step reamer blade and the second step reamer blade are made of metal ceramics.

[0015] Preferably, the tool handle and the tool groove are made of cemented carbide.

[0016] Preferably, the number of the first step reamer blades and the second step reamer blades is six.

[0017] Preferably, a chip breaker groove is obliquely provided at one end of the second step reamer blade close to the first step reamer blade.

[0018] Preferably, the first stepped reamer blade is connected to the second stepped reamer blade by welding.

[0019] Preferably, a first water diversion hole is formed on the first step reamer blade, and a second water diversion hole is formed on the second step reamer blade.

[0020] Beneficial effect: In the embodiment of the present application, a two-stage stepped reamer structure is adopted. By adopting the two-stage stepped reamer structure for the first stepped reamer blade and the second stepped reamer blade, the purpose of simultaneous processing at two stages is achieved, thereby achieving the technical effect of improving processing efficiency and tool life, thereby solving the technical problem that the existing composite reamers are mostly made of high-speed steel or cemented carbide, and due to the limitations of tool material and tool structure, they generally have low processing efficiency and poor life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the step reamer of the utility model;

[0022] Figure 2 It is a plan view of the step reamer of the utility model;

[0023] Figure 3 is a plan view of another step reamer of the utility model; and

[0024] Figure 4 It is a left view of the step reamer of the utility model.

[0025] The accompanying drawings are marked as follows:

[0026] 10. Tool handle; 101. Cooling hole;

[0027] 20. knife groove portion; 201. knife groove;

[0028] 30. second stepped reamer blade; 301. chip breaker groove; 302. second water diversion hole;

[0029] 40. First step reamer blade; 401. First water diversion hole. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] like Figure 1-4 As shown, the present application relates to a step reamer. The step reamer comprises: a shank 10; the shank 10 refers to the tool handle, which can achieve good clamping and fixing effects, thereby achieving good coordination effects with other components, and further providing a basis and guarantee for subsequent precise cutting.

[0035] The knife groove portion 20 is connected to one end of the knife handle 10, so as to achieve a good connection effect.

[0036] The second stepped reamer blade 30 is connected to the tool groove portion 20 at one end away from the tool handle 10, and can achieve a good cutting effect, thereby achieving the effect of improving work efficiency and quality.

[0037] The first stepped reamer blade 40 is connected to the second stepped reamer blade 30 at one end away from the blade groove portion 20 , which can further achieve a good cutting effect, thereby achieving the effect of improving work efficiency and quality.

[0038] The first stepped reamer blade 40 and the second stepped reamer blade 30 adopt a two-stage stepped reamer structure. By adopting the two-stage stepped reamer structure, blades with different diameters can be used to complete the reaming operation, thereby adapting to workpieces with different diameter requirements, thereby not only improving the processing efficiency and accuracy, but also extending the service life of the tool.

[0039] From the above description, it can be seen that the present application achieves the following technical effects:

[0040] In the embodiment of the present application, a two-stage stepped reamer structure is adopted. By adopting the two-stage stepped reamer structure for the first stepped reamer blade 40 and the second stepped reamer blade 30, the purpose of two-stage simultaneous processing is achieved, thereby achieving the technical effect of improving processing efficiency and tool life, thereby solving the technical problem that the existing composite reamers are mostly made of high-speed steel or cemented carbide, and generally have low processing efficiency and poor life due to the limitations of tool material and tool structure.

[0041] Furthermore, a cooling hole 101 is provided through the center of the tool handle 10. It can be understood that by providing the cooling hole 101 through the center of the tool handle 10, a good circulation effect of the coolant can be achieved, thereby achieving a good cooling effect.

[0042] Furthermore, the knife groove portion 20 is evenly provided with a plurality of knife grooves 201 along its circumference, and the number of the plurality of knife grooves 201 is six. It can be understood that a good guiding and controlling effect can be achieved, and at the same time, a good connection and fixing effect can also be achieved.

[0043] Further, the diameter of the first step reamer blade 40 is smaller than the diameter of the second step reamer blade 30. It can be understood that a good processing effect can be ensured.

[0044] Furthermore, the first step reamer blade 40 and the second step reamer blade 30 are metal ceramics. It is understood that by using metal ceramic materials, the following functions are included but not limited to: high hardness and wear resistance. Metal ceramic materials have high hardness and excellent wear resistance, so that the tool can maintain a long service life during the processing and reduce the replacement frequency; corrosion resistance. Metal ceramic materials have good corrosion resistance and can maintain stable performance when processing some corrosive materials. Precision and surface quality. Due to the high hardness and stability of metal ceramics, the reamer blade using this material can obtain higher processing accuracy and better surface quality.

[0045] Furthermore, the handle 10 and the knife groove 20 are made of hard alloy, which can ensure good structural strength.

[0046] Furthermore, the number of the first stepped reamer blades 40 and the second stepped reamer blades 30 is six. It can be understood that a good processing and forming effect can be ensured.

[0047] Furthermore, a chip breaker groove 301 is obliquely provided at one end of the second step reamer blade 30 close to the first step reamer blade 40. It can be understood that a good chip breaking effect can be achieved, thereby achieving an effect of improving machining accuracy.

[0048] Further, the first stepped reamer blade 40 is connected to the second stepped reamer blade 30 by welding. It can be understood that a good fixed connection effect can be ensured, thereby ensuring a stable connection effect.

[0049] Furthermore, the first stepped reamer blade 40 is provided with a first water distribution hole 401, and the second stepped reamer blade 30 is provided with a second water distribution hole 302. It can be understood that a good directional supply of cooling water can be achieved, thereby achieving an effect of reducing the temperature of the tool during processing, thereby achieving an effect of protecting the blade.

[0050] Specifically, when the tool is in use, the coolant passes through the cooling hole 101 in the center of the tool body, and the first water diversion hole 401 and the second water diversion hole 302 to cool the first step reamer blade 40 and the second step reamer blade 30 respectively, so as to reduce the temperature generated during cutting and extend the tool life.

[0051] The utility model also has the following beneficial effects:

[0052] The present application can solve the problem of low processing efficiency, thereby increasing tool life, while reducing the number of tool changes, shortening the preparation time for tool setting and tool testing, and reducing the scrap rate of processed products.

[0053] Compared with the prior art, the tool of the present application is made of metal ceramics and the body is made of cemented carbide, which shows good rigidity of the tool. In actual processing, it can process step deep holes with a depth of more than 7 times the diameter, and the processing speed can reach more than 150m; due to the large diameter reduction ratio of the tool, when the speed feed is the same, the large-diameter reamer blade is prone to chip entanglement, so a special chip breaker groove 301 is designed on the second step reamer blade 30, which can easily break chips during high-speed processing, thereby significantly improving the processing efficiency.

[0054] 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. Step reamer, characterized in that: include: Handle; A knife groove portion connected to one end of the knife handle; A second stepped reamer blade is connected to the knife groove portion away from one end of the knife handle; and A first stepped reamer blade connected to the second stepped reamer blade away from one end of the blade groove portion; Wherein, the first stepped reamer blade and the second stepped reamer blade adopt a two-stage stepped reamer structure.

2. The step reamer according to claim 1, characterized in that: A cooling hole is provided through the center of the tool handle.

3. The step reamer according to claim 1, characterized in that: The knife groove portion is evenly provided with a plurality of knife grooves along its circumference, and the number of the plurality of knife grooves is six.

4. The step reamer according to claim 1, characterized in that: The diameter of the first step reamer blade is smaller than the diameter of the second step reamer blade.

5. The step reamer according to claim 1, characterized in that: The first step reamer blade and the second step reamer blade are made of metal ceramics.

6. The step reamer according to claim 1, characterized in that: The knife handle and the knife groove are made of hard alloy.

7. The step reamer according to claim 1, characterized in that: The number of the first step reamer blades and the second step reamer blades is six.

8. The step reamer according to claim 1, characterized in that: A chip breaker groove is obliquely arranged at one end of the second step reamer blade close to the first step reamer blade.

9. The step reamer according to claim 1, characterized in that: The first step reamer blade is connected to the second step reamer blade by welding.

10. The step reamer according to claim 1, characterized in that: The first step reamer blade is provided with a first water diversion hole, and the second step reamer blade is provided with a second water diversion hole.

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