Lengthened guide bar type high-precision PCD boring cutter

Abstract

The utility model provides a lengthened guide bar type high-precision PCD boring cutter, relates to the technical field of cutters, and solves the technical problem that in the prior art, when a boring cutter is used for machining a cam shaft hole, the efficiency and the precision are not ideal. The lengthened guide bar type high-precision PCD boring cutter comprises a cutter bar body, a guide groove is formed in the cutter bar body in the length direction of the cutter bar body, and a PCD guide bar is arranged in the guide groove. The lengthened guide bar type high-precision PCD boring cutter provided by the utility model is used for improving the machining precision and the machining efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to an extended guide bar type high-precision PCD boring tool. Background Art

[0002] Boring tool processing is usually an ideal processing method for processing high-precision holes on different workpieces. In order to adapt to different processing conditions and improve workpiece processing efficiency, boring tool processing tools also need to be continuously improved. The existing camshaft holes need to be processed for a long length, but the boring tool can only process a short continuous section due to length and strength limitations, which makes the camshaft hole processing efficiency low; the existing boring tools also increase the tool bar length in order to improve efficiency, but due to the high technical requirements for roughness, coaxiality, roundness, etc., the tool bar length increases, and the tool bar is prone to offset when rotating, resulting in a decrease in processing accuracy.

[0003] The applicant has found that the prior art has at least the following technical problems: the efficiency and precision of the boring tool when machining the camshaft hole are not ideal. Utility Model Content

[0004] The purpose of the utility model is to provide a high-precision PCD boring tool with an extended guide bar to solve the technical problem that the efficiency and precision of the boring tool in the prior art are not ideal when machining the camshaft hole. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an extended guide bar type high-precision PCD boring tool, which comprises a tool bar body. A guide groove is arranged on the tool bar body along the length direction of the tool bar body, and a PCD guide bar is arranged in the guide groove.

[0007] As a further improvement of the present invention, at least three groups of guide grooves are provided, and at least three groups of guide grooves are distributed on the shank body in a ring array.

[0008] As a further improvement of the present invention, six groups of the guide grooves and the PCD guide bars are provided.

[0009] As a further improvement of the utility model, a knife seat is provided at the first end of the knife rod body, a first blade installation cavity and a second blade installation cavity are provided on the knife seat, and a first blade installation cavity and a second blade installation cavity are provided on the first blade installation cavity and the second blade installation cavity respectively.

[0010] As a further improvement of the present invention, the first blade installation cavity and the second blade installation cavity are sequentially arranged on the knife seat, and the first blade installation cavity is located on a side close to the first end of the knife rod body.

[0011] As a further improvement of the present invention, the pressure plate is connected to the blade seat through a pressure plate screw to fix the first blade in the first blade installation cavity.

[0012] As a further improvement of the present invention, an adjustment pin is further provided between the first blade and the first blade mounting cavity.

[0013] As a further improvement of the utility model, an adjusting flange is provided at the second end of the tool rod body, the tool rod body is connected to the middle part of the adjusting flange, and the tool handle is fixedly connected to the adjusting flange by an adjusting screw.

[0014] As a further improvement of the present invention, the first blade and the second blade are PCD blades or alloy blades.

[0015] As a further improvement of the utility model, a cooling channel is provided in the tool rod body, and the guide groove, the first blade installation cavity and the second blade installation cavity are all connected to the cooling channel.

[0016] The beneficial effects of the utility model are as follows: the extended guide bar type high-precision PCD boring tool provided by the utility model has a guide groove arranged on the tool bar body along the length direction of the tool bar body, and a PCD guide bar is arranged in the guide groove. The PCD guide bar is used to increase the rigidity, wear resistance and wear resistance of the tool bar body, so that after the length of the tool bar body is increased, the tool bar body can be more stable when rotating, and high-precision technical requirements such as roughness, coaxiality, and roundness can be met, thereby improving the processing accuracy; at the same time, due to the increase in the length of the tool bar body, four or five consecutive camshaft holes can be completed during the camshaft hole processing, which greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] In the figure, 1, tool handle; 2, adjustment flange; 3, tool rod body; 4, tool holder; 31, guide groove; 32, PCD guide strip; 41, first blade installation cavity; 42, second blade installation cavity; 43, first blade; 44, second blade. DETAILED DESCRIPTION

[0020] Please refer to the attached figure below Figure 1 And the text content understands the content of the utility model and the difference between the utility model and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the utility model by means of the accompanying drawings and the enumeration of some optional embodiments of the utility model. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the utility model in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementations, so those skilled in the art should know that: any technical means provided by the utility model can be replaced or any two or more technical means or technical features provided by the utility model can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the utility model. The scope of protection of the utility model should include any alternative technical solutions that can be thought of by those skilled in the art without creative labor and new technical solutions obtained by combining any two or more technical means or technical features provided by the utility model.

[0021] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] The utility model provides a lengthened guide bar type high-precision PCD boring cutter which improves machining accuracy and machining efficiency.

[0024] Combine the following Figure 1 The technical solution provided by the utility model is described in more detail.

[0025] The utility model provides an extended guide bar type high-precision PCD boring tool, comprising a tool handle 1, an adjustment flange 2, a tool bar body 3 and a tool seat 4, wherein the tool bar body 3 is provided with a guide groove 31 along the length direction of the tool bar body 3, and a PCD guide bar 32 is provided in the guide groove 31.

[0026] The utility model provides an extended guide bar type high-precision PCD boring tool, in which a guide groove 31 is provided on a shank body 3 along the length direction of the shank body 3, a PCD guide bar 32 is provided in the guide groove 31, and the PCD guide bar 32 is used to increase the rigidity, wear resistance and wear resistance of the shank body 3, so that after the length of the shank body 3 is increased, the shank body 3 can be more stable when rotating, and high-precision technical requirements such as roughness, coaxiality and roundness can be met, thereby improving the processing accuracy; at the same time, due to the increase in the length of the shank body 3, four or five consecutive camshaft holes can be completed during the processing of the camshaft hole, which greatly improves the processing efficiency.

[0027] Further, six groups of guide grooves 31 are provided, and the six groups of guide grooves 31 are distributed in an annular array on the shank body 3. By arranging the guide grooves 31 in an annular array, the uniformity of the shank body 3 can be ensured, thereby ensuring the strength of the shank body 3.

[0028] Optionally, the guide grooves 31 and the PCD guide bars 32 may also be arranged in two groups, three groups or more than three groups.

[0029] Furthermore, a knife seat 4 is provided at the first end of the knife rod body 3, and a first blade installation cavity 41 and a second blade installation cavity 42 are provided on the knife seat 4, and a first blade 43 and a second blade 44 are provided on the first blade installation cavity 41 and the second blade installation cavity 42 respectively.

[0030] In this further improvement, rough machining is first performed by the second blade 44 and then fine machining is performed by the first blade 43, thereby ensuring the composite machining accuracy requirements of the camshaft hole.

[0031] Specifically, the first blade installation cavity 41 and the second blade installation cavity 42 are sequentially arranged on the blade seat 4, and the first blade installation cavity 41 is located at a side close to the first end of the blade rod body 3. One first blade 43 is provided, and two second blades 44 are provided.

[0032] Optionally, the first blade and the second blade are PCD blades or alloy blades.

[0033] The pressure plate is connected to the blade holder 4 by a pressure plate screw to fix the first blade 43 in the first blade installation cavity 41. An adjustment pin is also provided between the first blade 43 and the first blade installation cavity 41. The second blade 44 is fixed to the second blade installation cavity 42 by a screw.

[0034] The second end of the tool rod body 3 is provided with an adjusting flange 2, the tool rod body 3 is connected to the middle part of the adjusting flange 2, and the tool handle 1 is fixedly connected to the adjusting flange 2 via an adjusting screw.

[0035] Furthermore, a cooling channel is provided in the shank body 3 , and the guide groove 31 , the first blade installation cavity 41 and the second blade installation cavity 42 are all connected to the cooling channel.

[0036] By setting a cooling channel, the guide groove 31, the first blade mounting cavity 41 and the second blade mounting cavity 42 are all connected to the cooling channel, and the coolant can cool the first blade 43, the second blade 44 and the PCD guide bar 32 through the cooling channel, thereby improving the service life of the first blade 43, the second blade 44 and the PCD guide bar 32.

[0037] Specifically, through holes connected to the cooling channel are provided in the guide groove 31 , the first blade installation cavity 41 and the second blade installation cavity 42 .

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A high-precision PCD boring tool with an extended guide bar, characterized in that: It comprises a tool bar body, wherein a guide groove is arranged on the tool bar body along the length direction of the tool bar body, and a PCD guide strip is arranged in the guide groove; At least three groups of guide grooves are provided, and at least three groups of guide grooves are distributed on the knife bar body in an annular array; A knife seat is provided at the first end of the knife rod body, a first blade installation cavity and a second blade installation cavity are provided on the knife seat, and a first blade installation cavity and a second blade installation cavity are provided with a first blade and a second blade respectively; The second end of the tool rod body is provided with an adjusting flange, the tool rod body is connected to the middle part of the adjusting flange, and the tool handle is fixedly connected to the adjusting flange via an adjusting screw.

2. The extended guide bar type high precision PCD boring tool according to claim 1 is characterized in that: The guide grooves and the PCD guide bars are provided in six groups.

3. The extended guide bar type high precision PCD boring tool according to claim 1 is characterized in that: The first blade installation cavity and the second blade installation cavity are sequentially arranged on the blade seat, and the first blade installation cavity is located at a side close to the first end of the blade rod body.

4. The extended guide bar type high precision PCD boring tool according to claim 1 is characterized in that: The pressure plate is connected to the blade seat through a pressure plate screw to fix the first blade in the first blade installation cavity.

5. The extended guide bar type high precision PCD boring tool according to claim 4 is characterized in that: An adjusting pin is also arranged between the first blade and the first blade mounting cavity.

6. The extended guide bar type high precision PCD boring tool according to claim 1, characterized in that: The first blade and the second blade are PCD blades or alloy blades.

7. The extended guide bar type high precision PCD boring tool according to claim 1, characterized in that: A cooling channel is arranged in the arbor body, and the guide groove, the first blade installation cavity and the second blade installation cavity are all connected to the cooling channel.

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