Deflection boring cutter

Abstract

The utility model provides a deflection boring cutter which comprises a fixing portion, a connecting portion and a working portion, the fixing portion is used for being fixed with a machine tool spindle, the connecting portion extends from the fixing portion to the side away from a machine tool, the connecting portion is cylindrical, a flow channel is arranged in the connecting portion, and the working portion is arranged at the end of the connecting portion. The working part comprises a mounting block eccentrically arranged relative to the connecting part, a first tool bit unit and a second tool bit unit, the first tool bit unit and the second tool bit unit are arranged on the front side and the rear side of the bottom of the mounting block, a liquid storage cavity communicating with the flow channel is formed in the mounting block, and a first liquid outlet channel communicating with the liquid storage cavity is formed in the first tool bit unit; and a second liquid outlet channel communicated with the liquid storage cavity is formed in the second tool bit unit. The first tool bit unit and the second tool bit unit are detachably arranged on the front side and the rear side of the working part respectively, so that the problem that symmetrical spigot holes on the inner side are difficult to bore is solved, and the machining efficiency is improved while the dimensional accuracy is guaranteed. Adjustment and replacement can be carried out according to different hole diameter sizes, and the utilization rate and universality of the eccentric boring cutter are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing tools, in particular to a deflection boring tool. Background Art

[0002] In the prior art, when processing Figure 1 Regarding the metal cabin servo mounting hole, the mounting hole has a large inner diameter and a small outer diameter and is symmetrically arranged. During conventional tool processing, it is necessary to extend the boring bar device into the interior of the metal cabin from one end, and adjust the tool diameter in the cavity. It is inconvenient to observe the tool adjustment value, and it is easy to process the size out of tolerance. After the large-diameter inner hole b on one side is processed, the boring tool needs to be turned and realigned, and the same method is used to process the small-diameter inner hole a on the other side. The processing process is relatively complicated, the processing efficiency is low, and the aperture tolerance size and form and position tolerance accuracy are not easy to guarantee. In addition, during the processing of the parts, since the boring tool unit is processed in the inner cavity, the coolant cooling is not in place, the surface quality of the boring hole is relatively poor, the blade is easy to wear, and the chip build-up phenomenon occurs.

[0003] Therefore, it is necessary to provide a kind of deflection boring tool, to overcome the defective that exists in above-mentioned. Utility Model Content

[0004] The purpose of the utility model is to provide a deflection boring tool.

[0005] According to one aspect of the present invention, a deflection boring tool is provided, comprising:

[0006] A fixing portion, the fixing portion being used to be fixed to a main shaft of a machine tool;

[0007] a connecting portion, the connecting portion extending from the fixing portion toward a side away from the machine tool, the connecting portion being cylindrical and having a flow channel therein;

[0008] The working part is arranged at the end of the connecting part, and the working part includes a mounting block eccentrically arranged relative to the connecting part and a first blade unit and a second blade unit arranged on the front and rear sides of the bottom of the mounting block. A liquid storage cavity connected to the flow channel is provided inside the mounting block, a first liquid outlet connected to the liquid storage cavity is provided in the first blade unit, and a second liquid outlet connected to the liquid storage cavity is provided in the second blade unit.

[0009] Preferably, the mounting block includes a main body and an extension portion located below the main body, the extension portion includes a first inclined mounting surface and a second inclined mounting surface arranged opposite to each other, and the first inclined mounting surface and the second inclined mounting surface are arranged to converge from top to bottom.

[0010] Preferably, the first cutter head unit includes a first cutter holder installed in a first inclined mounting surface and a first blade fixed at the end of the first cutter holder. The first liquid outlet is provided inside the first cutter holder. The liquid outlet of the first liquid outlet is located above the first blade, and the first blade can be cooled by spraying liquid.

[0011] Preferably, the second cutter head unit includes a second cutter holder installed in a second inclined mounting surface and a second blade fixed at the end of the second cutter holder. The second liquid outlet is provided inside the second cutter holder. The liquid outlet of the second liquid outlet is located above the second blade, and the first blade can be sprayed for cooling.

[0012] Preferably, the first tool holder is tilted from top to bottom in a direction from back to front, and the second tool holder is tilted from top to bottom in a direction from front to back.

[0013] Preferably, the first cutter head unit and the second cutter head unit can both be axially telescopically adjusted.

[0014] Preferably, the first blade unit and the second blade unit are both detachably arranged on the extension portion.

[0015] Preferably, a blocking block is provided on the side of the mounting block away from the connecting portion.

[0016] Compared with the prior art, the deflected boring tool provided by the utility model has the following beneficial effects:

[0017] By adopting the above-mentioned technical solution, the utility model has the advantages of simple structure, ingenious design, and low cost. The first and second cutter head units are detachably provided on the front and rear sides of the working portion, respectively. This solves the problem of difficult boring of internally symmetrical stop holes, ensuring dimensional accuracy while improving processing efficiency. The eccentric boring tool can be adjusted and replaced according to different hole sizes, greatly improving the utilization rate and versatility of the eccentric boring tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] Figure 1 This is a cross-sectional view of the metal cabin servo mounting holes;

[0020] Figure 2 A three-dimensional diagram of the eccentric boring tool of the present invention;

[0021] Figure 3 This is a front view of the eccentric boring tool of the utility model;

[0022] Figure 4 This is a left side view of the eccentric boring tool of the present utility model;

[0023] Figure 5for Figure 4 Cross-sectional view of the AA surface.

[0024] Among them, a. small-diameter inner hole, b. large-diameter inner hole, 1. fixing part, 11. groove, 2. connecting part, 21. flow channel, 3. working part, 31. mounting block, 311. main body, 312. extension part, 3121. first inclined mounting surface, 3122. second inclined mounting surface, 32. first cutting head unit, 321. first cutting head holder, 322. first blade, 323. first liquid outlet, 33. second cutting head unit, 331. second cutting head holder, 332. second blade, 333. second liquid outlet, 34. liquid storage chamber, 35. blocking block. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0027] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0028] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0029] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0031] See also Figures 2 to 5 The utility model discloses an eccentric boring tool, which includes a fixing part 1, a connecting part 2 and a working part 3 from back to front. The fixing part 1 is used to be fixed to the main shaft of the machine tool, and includes a groove 11 that matches and positions the main shaft of the machine tool, thereby improving the positioning accuracy of the eccentric boring tool and ensuring the stability of the eccentric boring tool during the boring process. The connecting part 2 extends from the fixing part 1 to the side away from the machine tool. The connecting part 2 is cylindrical and is provided with a flow channel 21 for cooling water circulation. The working part 3 is provided at the end of the connecting part 2, and the working part 3 includes a mounting block 31 eccentrically arranged relative to the connecting part 2 and a first tool head unit 32 and a second tool head unit 33 arranged on the front and rear sides of the bottom of the mounting block 31.

[0032] The mounting block 31 is internally provided with a liquid storage chamber 34 that communicates with the flow channel 21. A blocking block 35 is provided on the side of the mounting block 31 away from the connection portion to seal the liquid storage chamber 34. The mounting block 31 includes a main body 311 and an extension portion 312 located below the main body 311. The extension portion 312 includes a first inclined mounting surface 3121 and a second inclined mounting surface 3122 that are arranged opposite each other. The first inclined mounting surface 3121 and the second inclined mounting surface 3122 are arranged to converge from top to bottom, i.e., the first inclined mounting surface 3121 and the second inclined mounting surface 3122 are arranged in a V-shape.

[0033] The first blade unit 32 includes a first blade holder 321 mounted within a first inclined mounting surface 3121 and a first blade 322 secured to the end of the first blade holder 321. A first liquid outlet 323 is provided within the first blade holder 321, communicating with the liquid storage chamber 34. The liquid outlet of the first liquid outlet 323 is located above the first blade 322, allowing liquid spray cooling of the first blade 322.

[0034] The second tool head unit 33 includes a second tool holder 331 installed in the second inclined mounting surface 3122 and a second blade 332 fixed at the end of the second tool holder 331. A second liquid outlet 333 connected to the liquid storage chamber is provided inside the second tool holder 331. The liquid outlet of the second liquid outlet 333 is located above the second blade 332, and the second blade 332 can be sprayed for cooling. Cooling water can enter the liquid storage chamber 34 through the flow channel 21, and then flow out from the first liquid outlet 323 and the second liquid outlet 333 in the first tool holder 321 and the second tool holder 331 to cool the corresponding blades and rinse the boring surface, thereby solving the problem that deep cavity boring is difficult to cool and improving the service life of the blade and the surface quality of the boring hole.

[0035] The first tool rest 321 is tilted from top to bottom, from back to front, while the second tool rest 331 is tilted from top to bottom, from front to back. This means the first and second tool rests 321 and 331 form an inverted V-shape. Both the first and second tool heads 32 and 33 are detachable from the extension 312 and can be axially telescopically adjusted. This allows for adjustment and replacement based on different machining aperture sizes, significantly improving the eccentric boring tool's utilization and versatility.

[0036] The eccentric boring tool of the utility model can solve the problem of processing a small outer end hole and a large inner stop hole, and can bore and process the inner positive and negative stop holes from one side, thereby ensuring dimensional accuracy and reducing the clamping and alignment time of adjusting the boring tool front and back.

[0037] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A directional boring tool, characterized in that: include: A fixing portion, the fixing portion being used to be fixed to a main shaft of a machine tool; a connecting portion, the connecting portion extending from the fixing portion toward a side away from the machine tool, the connecting portion being cylindrical and having a flow channel therein; The working part is arranged at the end of the connecting part, and the working part includes a mounting block eccentrically arranged relative to the connecting part and a first blade unit and a second blade unit arranged on the front and rear sides of the bottom of the mounting block. A liquid storage cavity connected to the flow channel is provided inside the mounting block, a first liquid outlet connected to the liquid storage cavity is provided in the first blade unit, and a second liquid outlet connected to the liquid storage cavity is provided in the second blade unit.

2. The deflection boring tool according to claim 1, characterized in that The mounting block includes a main body and an extension portion located below the main body. The extension portion includes a first inclined mounting surface and a second inclined mounting surface that are oppositely arranged. The first inclined mounting surface and the second inclined mounting surface are arranged to converge from top to bottom.

3. The deflection boring tool according to claim 2, characterized in that The first cutter head unit includes a first cutter holder installed in a first inclined mounting surface and a first blade fixed at the end of the first cutter holder. The first liquid outlet is provided inside the first cutter holder. The liquid outlet of the first liquid outlet is located above the first blade, and the first blade can be sprayed for cooling.

4. The deflection boring tool according to claim 3, characterized in that The second cutter head unit includes a second cutter holder installed in a second inclined mounting surface and a second blade fixed at the end of the second cutter holder. The second liquid outlet is arranged inside the second cutter holder. The liquid outlet of the second liquid outlet is located above the second blade, which can spray liquid to cool the first blade.

5. The deflection boring tool according to claim 4, characterized in that: The first tool holder is tilted from top to bottom in a direction from back to front, and the second tool holder is tilted from top to bottom in a direction from front to back.

6. The deflection boring tool according to claim 5, characterized in that The first cutter head unit and the second cutter head unit can both be axially telescopically adjusted.

7. The deflection boring tool according to claim 6, characterized in that The first blade unit and the second blade unit are both detachably arranged on the extension portion.

8. The deflection boring tool according to claim 6, characterized in that A blocking block is provided on the side of the installation block away from the connecting portion.

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