End mill for machining flange channel

Abstract

The utility model discloses an end mill for processing a flange channel, which belongs to the technical field of cutter design, the end mill is symmetrically provided with four cutting edges, the angle range of the front angle of each cutting edge is 6-8 degrees, two rear angles are continuously arranged on the side edge of each cutting edge, and the two rear angles are respectively a first rear angle and a second rear angle. The angle range of the first rear angle is 8-10 degrees, the angle range of the second rear angle is 18-23 degrees, a tool nose protection angle is arranged at a tool nose of the cutting edge, the core diameter range of the cutting edge is 5-7 cm, and the angle range of the helical angle of the cutting edge is 37-39 degrees. Compared with a standard end mill, according to the structure, the four edges are subjected to equal grinding, the front angles are increased so as to facilitate chip removal, the core diameter of the cutter is increased, the torque resistance of the cutter is improved, the side edges are changed into two rear angles from an original single rear angle so as to improve the stability of the cutter, and the service life of the cutter is prolonged. In addition, rough machining and finish machining of the end mill can be completed at a time, and the cutter does not need to be replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool design, and in particular relates to an end milling cutter for machining a flange channel. Background Art

[0002] In the machinery manufacturing industry, some multi-channel flanges are processed using old CNC machine tools. Due to the years of use of the machine tools themselves, the machine tool accuracy has decreased. Replacing the equipment will greatly increase the company's costs. In order to reduce the improvement cost and meet the parts requirements, it is necessary to further improve the tool to make up for the shortcomings of the equipment.

[0003] At present, when customers use existing tools to process φ10mm multi-channel flanges, the machine tool spindle has a spindle runout of 0.02mm, causing serious damage to the tool. How to design a new end mill to solve the technical difficulties of flange channel processing has long troubled technicians in this field. Utility Model Content

[0004] In view of the above technical problems, the utility model provides an end mill for machining flange channels, which is not only highly efficient but also has a longer tool life, and can solve the problem of machining flange channels.

[0005] The utility model solves the above problems through the following technical means:

[0006] A vertical milling cutter for processing flange channels, characterized in that four blades are symmetrically arranged, wherein: the front angle of the blade ranges from 6° to 8°; two back angles are continuously arranged on the side edge of the blade, namely a first back angle and a second back angle, the first back angle ranges from 8° to 10°, and the second back angle ranges from 18° to 23°; a tip protection angle is arranged at the tip of the blade; the core diameter of the blade ranges from 5cm to 7cm; and the helix angle of the blade ranges from 37° to 39°.

[0007] Preferably, the front angle is 7°; the first back angle is 8°, the second back angle is 20°; the tip protection angle is 45°; the core diameter of the blade is 6 cm; and the helix angle of the blade is 38°.

[0008] Preferably, the width of the first rear angle is 0.5 mm.

[0009] Preferably, the width of the second rear angle is 1 mm.

[0010] Preferably, the inner angle of the blade tip is 2°.

[0011] The end milling cutter for machining flange channels of the utility model has the following beneficial effects:

[0012] The end mill has four blades symmetrically arranged, wherein: the front angle of the blade ranges from 6° to 8°, two back angles are continuously arranged on the side edge of the blade, namely the first back angle and the second back angle, the first back angle ranges from 8° to 10°, the second back angle ranges from 18° to 23°, a tip protection angle is arranged at the tip of the blade, the core diameter range of the blade is from 5cm to 7cm, and the helix angle of the blade ranges from 37° to 39°. Compared with the standard end mill, this structure grinds the four blades equally, increases the front angle to facilitate chip removal, and improves the core diameter of the tool to thicken, increase the torque resistance of the tool, and change the side edge from the original single back angle to two back angles to improve the stability and service life of the tool. In addition, the roughing and finishing of the end mill can be completed at one time without changing the tool. During actual processing, the machine tool spindle runout can be controlled within 0.001mm, meeting the processing requirements of a rotation speed of 2000r / min and a feed speed of 800mm / min. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the side blade structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] Among them, 1-front angle, 2-side edge, 3-tip protection angle, 4-core diameter, 5-helix angle, 6-first back angle, 7-second back angle, 8-tip inner angle. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] The present invention will be described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown, Figure 3 for Figure 2 CC cross-section diagram, Figure 4 for Figure 2 EE cross-sectional view. In the figure, the end mill for machining flange channels has four blades symmetrically arranged, and the front angle 1 of the blade ranges from 6° to 8°; two back angles are continuously arranged on the side edge 2 of the blade, namely the first back angle 6 and the second back angle 7, the first back angle 6 ranges from 8° to 10°, and the second back angle 7 ranges from 18° to 23°; a blade tip protection angle 3 is arranged at the tip of the blade; the core diameter 4 of the blade ranges from 5cm to 7cm; and the helix angle 5 of the blade ranges from 37° to 39°.

[0022] In specific application, the front angle 1 is 7°; the first back angle 6 is 8°, the second back angle 7 is 20°; the tip protection angle 3 is 45°; the core diameter 4 of the blade is 6 cm; the helix angle 5 of the blade is 38°, the width of the first back angle 6 is 0.5 mm, the width of the second back angle 7 is 1 mm, and the angle of the tip inner angle 8 of the blade is 2°.

[0023] In actual work, the structure grinds the four edges equally, increases the front angle to facilitate chip removal, and increases the core diameter of the tool to increase the torque resistance of the tool. The side edge is changed from the original single back angle to two back angles to improve the stability and service life of the tool. In addition, the roughing and finishing of the end mill can be completed in one go without changing the tool. In actual processing, the runout amplitude of the machine tool spindle can be controlled within 0.001mm, and the processing requirements of 2000r / min speed and 800mm / min feed speed are met. The chipping and broken blade conditions have been significantly improved.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An end mill for machining a flange channel, characterized in that: There are four blades arranged symmetrically, wherein: The rake angle (1) of the blade is in the range of 6° to 8°; Two back angles are continuously arranged on the side edge (2) of the blade, namely a first back angle (6) and a second back angle (7), the first back angle (6) has an angle range of 8° to 10°, and the second back angle (7) has an angle range of 18° to 23°; A blade tip protection angle (3) is provided at the blade tip of the blade; The core diameter (4) of the blade ranges from 5 cm to 7 cm; The helix angle (5) of the blade is in the range of 37° to 39°.

2. The end mill for machining flange channels according to claim 1, characterized in that: The front angle (1) is 7°; The first back angle (6) is 8°, and the second back angle (7) is 20°; The angle of the knife tip protection angle (3) is 45°; The core diameter (4) of the blade is 6 cm; The helix angle (5) of the blade is 38°.

3. The end mill for machining flange channels according to claim 2, characterized in that: The width of the first rear angle (6) is 0.5 mm.

4. The end mill for machining flange channels according to claim 3, characterized in that: The width of the second rear angle (7) is 1 mm.

5. The end mill for machining flange channels according to claim 4, characterized in that: The inner angle (8) of the blade tip is 2°.

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