A micrometric u-drill

Abstract

The utility model relates to a kind of fine tuning U drill, including tool holder, the one end of tool holder is cutting end, the cutting end is equipped with outer blade, adjusting screw and inner blade, the outer blade and the inner blade are along the axis of symmetry distribution of tool holder, the end of adjusting screw is with the side wall of outer blade abuts. By adjusting screw to outer blade, outer blade moves along the radial direction of tool holder outward, to increase the diameter of drilling hole, meet the processing demand of different size hole, improve the use range, reduce processing cost, improve drilling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically to a finely adjustable U-drill. Background Technology

[0002] In machining, drilling is a common machining process, and U-drills are widely used as high-efficiency hole-making tools.

[0003] U-drills are roughing tools, with a very high chip removal rate during drilling. However, this also means that U-drills do not offer high machining precision and are only suitable for roughing. Currently, the inserts on U-drills are fixed, allowing them to machine holes of fixed sizes. Different U-drills are required to machine different sizes, resulting in a large variety of U-drills and frequent changes that negatively impact machining efficiency. Utility Model Content

[0004] This utility model addresses the existing technical problems by providing a finely adjustable U-drill.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A micro-adjustable U-drill includes a tool holder, one end of which is a cutting end. The cutting end is equipped with an outer blade, an adjusting screw, and an inner blade. The outer blade and the inner blade are centrally symmetrically distributed along the axis of the tool holder. The end of the adjusting screw abuts against the side wall of the outer blade.

[0006] Based on the above technical solution, the present invention can be further improved as follows:

[0007] Preferably, the end of the adjusting screw is perpendicular to the sidewall of the outer blade.

[0008] Preferably, the outer blade and the inner blade are made of cemented carbide.

[0009] Preferably, the adjustment range of the outer blade is 0.1mm-0.2mm.

[0010] The beneficial effects of this utility model are: by adjusting the screw to apply force to the outer blade, the outer blade moves outward along the radial direction of the tool holder, thereby increasing the drilling diameter, meeting the processing requirements of holes of different sizes, expanding the application range, reducing processing costs, improving drilling efficiency, reducing the specifications of U-drills, and improving processing accuracy by changing the drilling diameter. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the adjustable U-drill of this utility model;

[0012] Figure 2 This utility model Figure 1 Schematic diagram of cross-section at point AA.

[0013] The attached diagram is labeled as follows: 1. Handle; 2. Outer blade; 3. Fixing screw; 4. Adjusting screw; 5. Inner blade. Detailed Implementation

[0014] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. The terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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 orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0015] like Figures 1 to 2 As shown, this utility model discloses a micro-adjustable U-drill, including a tool holder 1. One end of the tool holder 1 is the cutting end, on which an outer blade 2, an adjusting screw 4, and an inner blade 5 are mounted. The outer blade 2 and the inner blade 5 are centrally symmetrically distributed along the axis of the tool holder 1. The outer blade 2 and the inner blade 5 are respectively mounted on the tool holder 1 by fixing screws 3. The fixing screws 3 are hexagonal countersunk screws, which have better anti-loosening and anti-vibration capabilities, ensuring the firmness of the installation of the outer blade 2 and the inner blade 5. The end of the adjusting screw 4 abuts against the side wall of the outer blade 2. By screwing in the adjusting screw 4, the position of the outer blade 2 is adjusted. The adjustment range of the outer blade 2 along the radial direction of the tool holder 1 is 0.1mm-0.2mm, which can ensure both normal drilling and the service life of the outer blade 2.

[0016] In this embodiment, specifically, the end of the adjusting screw 4 is perpendicular to the side wall of the outer blade 2. This ensures that sufficient pressure is applied to the outer blade 2 so that it can move outward normally and avoids tilting of the outer blade 2, which would affect its service life.

[0017] Furthermore, the adjusting screw 4 is a tapered set screw, which is easy to install and reduces space occupation. The tapered design helps to prevent slippage or loosening between parts due to vibration or other external forces, ensuring the tightening effect of the outer blade 2.

[0018] In this embodiment, specifically, the outer blade 2 and the inner blade 5 are made of cemented carbide, ceramic, or cubic boron nitride to ensure normal drilling and improve the service life of the U-drill.

[0019] The adjustment process for this finely adjustable U-drill is as follows:

[0020] First, apply a preload to the outer blade 2 using the fixing screw 3 to install the outer blade 2 onto the handle 1. Then, screw in the adjusting screw 4 to apply force to the outer blade 2, pushing the outer blade 2 outward to adjust its position. The fixing screw 3 will then undergo elastic deformation. Tighten the fixing screw 3 to ensure that the outer blade 2 is firmly fixed onto the handle 1. Finally, fix the inner blade 5 onto the handle 1 using the fixing screw 3.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trimmable U-drill characterized in that, The tool includes a handle (1), one end of which is a cutting end. The cutting end is equipped with an outer blade (2), an adjusting screw (4), and an inner blade (5). The outer blade (2) and the inner blade (5) are centrally symmetrically distributed along the axis of the handle (1). The end of the adjusting screw (4) abuts against the side wall of the outer blade (2) and is perpendicular to the side wall of the outer blade (2). The adjustment range of the outer blade (2) is 0.1mm-0.2mm.

2. The trimmable U-bolt of claim 1, wherein, The outer blade (2) and the inner blade (5) are made of cemented carbide.

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