Precise drilling reamer

Abstract

The utility model relates to the technical field of machining tools, and particularly discloses a precise drilling reamer which comprises a reamer handle and a reamer body. The tool body comprises a tool apron, a tool bar and a tool bit which are integrally formed; the tool apron is detachably installed on the tool handle, a plurality of reaming parts are formed on the peripheral side of the tool bit by forming a plurality of inclined faces, supporting cutting edges used for drilling hole supporting are arranged in the middles of the reaming parts, and a front cutting edge for advancing reaming and a rear cutting edge for retreating reaming are arranged on one side of each reaming part side by side. According to the drilling reamer, forward reaming machining can be conducted by arranging the front cutting edge, backward reaming can be achieved by arranging the rear cutting edge, in this way, the drilling quality is guaranteed, the reamer can be rapidly taken out, and the high use value is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of machining tools, in particular to a precision drilling reamer. BACKGROUND

[0002] The reamer is a rotating tool with one or more cutting teeth to remove a thin layer of metal from the surface of a machined hole, mainly used for hole expansion or hole repair of mechanical workpieces. The common reamer mainly consists of two parts of a tool shank and a tool head. The tool shank is installed on the driving tool shaft, and the hole expansion and hole repair of the workpiece are realized by rotating the tool head. A cutting fluid through hole is formed in the tool shank. During work, the cutting fluid can flow in the tool head. The existing drilling reamer can only process forward when drilling the mechanical parts, cannot process backward, cannot guarantee the drilling quality, and the tool is difficult to quickly take out. In order to solve the above problems, the application discloses a precision drilling reamer. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the defects of the prior art, the application discloses a precision drilling reamer.

[0004] In order to achieve the above purpose, the technical scheme adopted by the application is as follows: a precision drilling reamer, comprising a tool handle and a tool body.

[0005] The tool body comprises an integrally formed tool seat, a tool shank and a tool head. The tool seat is detachably installed on the tool handle. The outer periphery side of the tool head is formed with a plurality of reaming parts by being provided with a plurality of inclined surfaces. The middle part of the reaming part is provided with a support cutting edge for supporting drilling. The one side of the reaming part is provided with a forward cutting edge for forward reaming and a rear cutting edge for backward reaming in parallel.

[0006] Further preferably, an octagonal protrusion is integrally arranged on the tool seat. A circular groove is formed in the bottom of the tool handle. The octagonal protrusion on the tool seat is inserted into the circular groove and adjusted to be screwed into the circular groove on the outer periphery side of the tool handle and abuts against the same. The bottom of the tool seat is annularly arranged and screwed into four second bolts to be fixed with the tool handle.

[0007] Further preferably, four positioning columns are arranged in the positions between the tool seat and the tool handle and the four first bolts. Four third bolts are screwed into the bottom of the tool seat and abut against the four positioning columns respectively.

[0008] Further preferably, at least one cooling hole is formed in the inclined surface and the reaming part.

[0009] Further preferably, the height of the forward cutting edge and the rear cutting edge is 0.02-0.03mm.

[0010] Further preferably, the height of the support cutting edge is 0.005-0.01mm.

[0011] Further preferably, a clearance is formed between the leading edge and the trailing edge.

[0012] Further preferably, six inclined surfaces are formed on the outer periphery of the tool head and six reaming portions are formed.

[0013] The present application achieves the following beneficial effects:

[0014] The drilling reamer disclosed in the present application can perform forward reaming by the leading edge and backward reaming by the trailing edge, thereby ensuring the drilling quality and enabling the tool to be quickly removed, which has high use value.

[0015] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure.

[0017] Fig. 1 is a schematic diagram of the overall structure of the present application;

[0018] Fig. 2 is a schematic diagram of the overall structure of the present application;

[0019] Fig. 3 is a schematic diagram of the overall structure of the present application;

[0020] In the drawings: 10, tool shank; 11, circular groove; 20, tool body; 21, tool seat; 211, octagonal protrusion; 22, tool rod; 23, tool head; 231, inclined surface; 232, reaming portion; 2321, support edge; 2322, leading edge; 2323, trailing edge; 2324, clearance; 233, cooling hole; 30, first bolt; 40, second bolt; 50, positioning column; 60, third bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0022] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] Embodiments

[0024] In order to solve the problem that the existing drilling reamer can only advance machining when drilling mechanical parts, cannot retreat machining, cannot guarantee the drilling quality and the tool is difficult to quickly take out, with reference to Figs. 1-3 The present application discloses a precision drilling reamer, which comprises a handle 10 and a tool body 20.

[0025] The tool body 20 comprises an integrally formed tool seat 21, a tool rod 22 and a tool head 23; the tool seat 21 is detachably mounted on the handle 10, the outer peripheral side of the tool head 23 is formed with a plurality of reaming parts 232 by opening a plurality of inclined surfaces 231, the middle part of the reaming part 232 is provided with a supporting cutting edge 2321 for supporting drilling, the height of the supporting cutting edge 2321 is 0.005-0.01mm, optionally, the height of the supporting cutting edge 2321 of the present application is 0.005mm, 0.006mm, 0.007mm, 0.008mm, 0.009mm, 0.01mm, one side of the reaming part 232 is provided with a forward cutting edge 2322 for forward reaming and a rear cutting edge 2323 for backward reaming in parallel, the height of the forward cutting edge 2322 and the rear cutting edge 2323 is 0.02-0.03mm, optionally, the height of the forward cutting edge 2322 and the rear cutting edge 2323 is 0.02mm, 0.021mm, 0.022mm, 0.023mm, 0.024mm, 0.025mm, 0.026mm, 0.027mm, 0.028m, 0.029mm, 0.03mm, and a clearance 2324 is opened between the forward cutting edge 2322 and the rear cutting edge 2323.

[0026] Based on the above structure, the forward cutting edge 2322 can be used for forward reaming machining, the rear cutting edge 2323 can be used for backward reaming, and the supporting cutting edge 2321 can support during forward drilling reaming or backward drilling reaming of the tool head 23, so as to guarantee the drilling quality and enable the tool to be quickly taken out, which has high use value.

[0027] In order to realize the precise assembly of the tool body 20 and the tool handle 10, the octagonal protrusion 211 is integrally arranged on the tool seat 21, the bottom of the tool handle 10 is provided with the circular groove 11, the octagonal protrusion 211 on the tool seat 21 is inserted into the circular groove 11 and is adjusted to abut against the four first bolts 30 screwed into the circular groove 11 on the outer circumferential side of the tool handle 10, the bottom of the tool seat 21 is arranged in a ring array and is screwed with the four second bolts 40 to be fixed with the tool handle 10, and in the specific installation process, the position of the octagonal protrusion 211 in the circular groove 11 can be limited by the four first bolts 30, so that the precise adjustment of the tool seat 21 can be realized, and in addition, the four positioning columns 50 are arranged in a staggered manner between the tool seat 21 and the tool handle 10 and the four first bolts 30, the bottom of the tool seat 21 is screwed with the four third bolts 60 to abut against the four positioning columns 50, respectively, so that the support of the tool seat 21 and the tool handle 10 can be formed.

[0028] In order to realize the cooling of the tool head 23 during the drilling and reaming, the cooling hole 233 is arranged on the inclined surface 231 and the reaming part 232, and the cooling hole 233 is arranged on the inclined surface 231 and the reaming part 232.

[0029] Specifically, the six inclined surfaces 231 are arranged on the outer periphery of the tool head 23 and the six reaming parts 232 are formed, and the six reaming parts 232 will operate synchronously during the drilling and reaming of the mechanical parts.

[0030] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A precision drill reamer, characterized by, The utility model relates to a cutting tool, including handle (10) and cutter body (20). The cutter body (20) includes integrally formed cutter seat (21), cutter rod (22) and cutter head (23), the cutter seat (21) is detachably installed on the handle (10), the outer periphery side of the cutter head (23) is formed with a plurality of reaming parts (232) by opening a plurality of inclined surfaces (231), the middle part of the reaming part (232) is provided with a support cutting edge (2321) for hole support, and the one side of the reaming part (232) is provided with a forward cutting edge (2322) for forward reaming and a backward cutting edge (2323) for backward reaming side by side.

2. A precision reamer according to claim 1, wherein The cutter seat (21) is integrally provided with an octagonal protrusion (211), the bottom of the handle (10) is provided with a circular groove (11), the octagonal protrusion (211) on the cutter seat (21) is inserted into the circular groove (11) and is adjusted to be screwed into four first bolts (30) in the circular groove (11) and abuts against, and the bottom of the cutter seat (21) is screwedly provided with four second bolts (40) in annular array and is fixed with the handle (10).

3. The precision hole reamer according to claim 1, wherein The cutter seat (21) and the handle (10) are provided with four positioning columns (50) in the position of the four first bolts (30), and the bottom of the cutter seat (21) is screwedly provided with four third bolts (60) and the four positioning columns (50) are respectively abutted against.

4. The precision hole reamer of claim 1 wherein, The inclined surface (231) and the reaming part (232) are provided with at least a cooling hole (233).

5. The precision hole reamer of claim 1 wherein, The height of the forward cutting edge (2322) and the backward cutting edge (2323) is 0.02-0.03mm.

6. The precision hole reamer of claim 1 wherein, The height of the support cutting edge (2321) is 0.005-0.01mm.

7. The precision hole reamer of claim 1 wherein, The forward cutting edge (2322) and the backward cutting edge (2323) are provided with a clearance (2324).

8. The precision hole reamer of claim 1 wherein, The outer periphery of the cutter head (23) is provided with six inclined surfaces (231) and six reaming parts (232).

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