Eccentric rotation adjustable numerical control face milling cutter

Abstract

The utility model provides an eccentric rotation adjustable numerical control face milling cutter, and belongs to the technical field of numerical control cutters. The eccentric rotary adjustable numerical control face milling cutter comprises an adjustable cutter handle and a milling cutter body, an eccentric shaft hole eccentrically arranged with the center shaft of the cutter handle body is formed in the bottom of the adjusting cutter handle, two fastening screw holes penetrating through the side wall are formed in the eccentric shaft hole in the thin side of the side wall of the adjusting cutter handle, and off-axis fastening screws are installed in the fastening screw holes in a matched mode. The milling cutter body is mainly composed of a plurality of tooth-shaped cutter holders, an eccentric rotating shaft eccentrically arranged with the center shaft of the cutter body is formed on the top face of the common top center shaft end of the tooth-shaped cutter holders, and the eccentric rotating shaft extends into the eccentric shaft hole to be correspondingly matched with the eccentric shaft hole when installed. The tail end of the off-axis fastening screw abuts against the prism side plane of the eccentric rotating shaft after being installed, and the adjusting cutter handle and the milling cutter body are relatively fastened and fixed. The milling range of the numerical control milling machine can be adjusted according to actual requirements, and the numerical control milling machine has the advantage of being higher in practicability.

Description

Technical Field

[0001] This utility model belongs to the field of CNC cutting tool technology, and relates to a face milling cutter, particularly to an eccentric rotary adjustable CNC face milling cutter. Background Technology

[0002] A face milling cutter is a CNC cutting tool primarily used for machining flat surfaces. It is mainly used on milling machines and machining centers to machine planes, steps, grooves, shaped surfaces, and to cut off workpieces. Conventional face milling cutters typically have fixed dimensions, which limits their practical application.

[0003] In the prior art, patent application number CN201720057532.8 discloses an eccentric face milling cutter structure, including a main shank, a cutter bar, an eccentric cutter disc, and inserts. The cutter bar is connected to the machining equipment through the main shank, the eccentric cutter disc is integrated with the cutter bar, and the inserts are fixed to the eccentric cutter disc with screws. The eccentric cutter disc is arranged in a fan shape with an angle of less than 180°, and the eccentric cutter disc is perpendicular to the cylindrical surface of the cutter bar. The two edges of the eccentric cutter disc are tangent to the outer circle of the cutter bar, and its center coincides with the center of the cross-section of the cutter bar. At least one insert is installed on the eccentric cutter disc. Although this patent expands the machining range of the face milling cutter by setting an eccentric cutter disc, and can be applied to parts with internal cavities where the size of the surface to be machined is larger than the size of the tool entry point, it still has fixed specifications and dimensions, and its practical application is still limited. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing an eccentrically adjustable rotary CNC face milling cutter.

[0005] The purpose of this utility model can be achieved through the following technical solution: an eccentric rotary adjustable CNC face milling cutter, including an adjusting tool holder and a milling cutter body; the adjusting tool holder has an eccentric shaft hole at the bottom that is eccentrically set with respect to the central axis of the tool holder body, and two fastening screw holes that penetrate the side wall are opened on the thinner side of the adjusting tool holder side wall, and an off-axis fastening screw is installed in the fastening screw hole;

[0006] The milling cutter body is mainly composed of several toothed tool holders formed uniformly in the circumference. On the top central shaft end common to all toothed tool holders, an eccentric rotating shaft is formed on the top surface, which is eccentrically set with respect to the central shaft of the cutter body. The eccentric rotating shaft is generally prismatic in shape. During installation, it extends into the eccentric shaft hole of the adjusting tool holder and cooperates with it, thereby driving the entire milling cutter body to rotate eccentrically. After installation, the screw tail end of the eccentric shaft fastening screw abuts against the prismatic side plane of the eccentric rotating shaft, thereby relatively fastening and fixing the adjusting tool holder and the milling cutter body.

[0007] In the above-mentioned eccentric rotary adjustable CNC face milling cutter, a clamping head is formed at the top of the adjusting tool holder, and a mounting threaded hole is formed at the center of the clamping head from the top along the central axis downward. The mounting threaded hole is not connected to the eccentric shaft hole.

[0008] In the aforementioned eccentric rotary adjustable CNC face milling cutter, a guide slope is obliquely provided at the top outer edge of the eccentric rotary shaft.

[0009] In the aforementioned eccentric rotary adjustable CNC face milling cutter, the toothed cutter holder has a positioning seat on one side of the toothed shape, and a cutter holder screw hole that penetrates the toothed cutter holder is obliquely opened from the center of the bottom of the positioning seat groove. A CNC insert is installed in the positioning seat, and the CNC insert is fastened and fixed in the positioning seat by the insert fixing screw cooperating with the cutter holder screw hole.

[0010] In the above-mentioned eccentric rotary adjustable CNC face milling cutter, the positioning seat is generally square, and the shape of the CNC cutting tool is not limited by the positioning seat, and can be triangular, square, polygonal and circular.

[0011] Compared with the prior art, the eccentric rotary adjustable CNC face milling cutter provided by this utility model has a corresponding eccentric shaft hole and an eccentric rotating shaft. This allows the CNC face milling cutter to be rotated and adjusted within the eccentric shaft hole according to the actual milling requirements. This adjusts the distance between the outer edge of the cutter body and the central axis of the face milling cutter, thereby achieving adjustment of the milling range of the CNC face milling cutter and making it more practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an eccentric rotary adjustable CNC face milling cutter;

[0013] Figure 2 This is a structural cross-sectional view of this eccentric rotary adjustable CNC face milling cutter;

[0014] Figure 3 This is an exploded view of the structure of an eccentric rotary adjustable CNC face milling cutter;

[0015] In the above figure, 100 is the adjusting tool holder; 110 is the clamping head; 111 is the mounting threaded hole; 120 is the eccentric shaft hole; 130 is the fastening screw hole; 131 is the eccentric shaft fastening screw; 200 is the milling cutter body; 210 is the eccentric rotating shaft; 211 is the guide slope; 220 is the toothed tool holder; 221 is the positioning seat; 222 is the tool holder screw hole; 230 is the CNC insert; and 231 is the insert fixing screw. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3 As shown, this eccentric rotary adjustable CNC face milling cutter includes an adjusting shank 100 and a cutter body 200. The central axis of the shank body of the adjusting shank 100 and the central axis of the cutter body of the cutter body 200 are coaxially arranged. A clamping head 110 is formed at the top of the adjusting shank 100. A mounting threaded hole 111 is opened from the top along the central axis downward from the center of the clamping head 110. Both the clamping head 110 and the mounting threaded hole 111 facilitate the positioning and installation of the face milling cutter on the CNC milling machine.

[0018] like Figures 2 to 3 As shown, the adjusting tool holder 100 has an eccentric shaft hole 120 at its bottom, which is offset from the central axis of the tool holder body. The eccentric shaft hole 120 is not connected to the mounting threaded hole 111. On the thinner side of the adjusting tool holder 100, the eccentric shaft hole 120 has two through-hole fastening screw holes 130, and an off-axis fastening screw 131 is installed in the fastening screw holes 130.

[0019] The milling cutter body 200 is mainly composed of several toothed cutter holders 220 formed uniformly in the circumference. On the top central shaft end of all toothed cutter holders 220, an eccentric rotation shaft 210 is formed on the top surface, which is eccentrically set with respect to the central shaft of the cutter body. The eccentric rotation shaft 210 is generally prism-shaped, and a guide slope 211 is obliquely opened at the outer edge of its top.

[0020] The toothed tool holder 220 has a positioning seat 221 on one side of the tooth. The positioning seat 221 is generally square. Starting from the center of the bottom of the positioning seat 221, a tool holder screw hole 222 is obliquely opened and passes through the toothed tool holder 220. A CNC cutting tool 230 is installed in the positioning seat 221. The CNC cutting tool 230 is fastened and fixed in the positioning seat 221 by the cutting tool fixing screw 231 cooperating with the tool holder screw hole 222. The shape of the CNC cutting tool 230 is not limited by the positioning seat 221 and can be triangular, square, polygonal and circular, etc.

[0021] The working principle of this utility model is as follows: When the adjusting handle 100 is connected and installed with the milling cutter body 200, the eccentric rotation shaft 210 of the milling cutter body 200 extends into the eccentric shaft hole 120 of the adjusting handle 100 and cooperates accordingly. The CNC face milling cutter can rotate and adjust the eccentric rotation shaft 210 within the eccentric shaft hole 120 according to the actual milling requirements, thereby adjusting the distance between the outer edge of the milling cutter body 200 and the overall central axis of the face milling cutter, thus adjusting the milling range of the CNC face milling cutter. After the milling cutter body 200 is adjusted to the required milling range, the eccentric shaft fastening screw 131 is installed in the fastening screw hole 130, so that the tail end of the screw abuts against the prism side plane of the eccentric rotation shaft 210, thereby relatively fastening and fixing the adjusting handle 100 and the milling cutter body 200. This invention allows the milling range of the face milling cutter on a CNC milling machine to be adjusted according to actual needs, making it more practical than existing CNC face milling cutters.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0023] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. An eccentrically adjustable rotary CNC face milling cutter, comprising an adjusting tool holder (100) and a cutter body (200); characterized in that, The adjusting handle (100) has an eccentric shaft hole (120) at the bottom that is eccentric to the central axis of the handle body. The eccentric shaft hole (120) has two fastening screw holes (130) that penetrate the side wall on the thinner side of the adjusting handle (100). An off-axis fastening screw (131) is installed in the fastening screw hole (130). The milling cutter body (200) is mainly composed of several toothed tool holders (220) formed uniformly in the circumference. On the top central shaft end of all toothed tool holders (220), an eccentric rotating shaft (210) is formed on the top surface, which is eccentrically set with respect to the central shaft of the cutter body. The eccentric rotating shaft (210) is generally prismatic in shape. During installation, it extends into the eccentric shaft hole (120) of the adjusting tool holder (100) and cooperates with it, thereby driving the entire milling cutter body (200) to rotate eccentrically. After installation, the screw tail of the eccentric shaft fastening screw (131) abuts against the prismatic side plane of the eccentric rotating shaft (210) to relatively fasten and fix the adjusting tool holder (100) and the milling cutter body (200).

2. The eccentric rotary adjustable CNC face milling cutter according to claim 1, characterized in that, The top of the adjusting handle (100) is formed with a clamping head (110), and the center of the clamping head (110) is provided with a mounting threaded hole (111) from the top along the central axis downward. The mounting threaded hole (111) is not connected to the eccentric shaft hole (120).

3. The eccentric rotary adjustable CNC face milling cutter according to claim 1, characterized in that, The eccentric rotating shaft (210) has a guide slope (211) at the top outer edge.

4. The eccentric rotary adjustable CNC face milling cutter according to claim 1, characterized in that, The toothed tool holder (220) has a positioning seat (221) on one side of the tooth shape. Starting from the center of the bottom of the positioning seat (221), a tool holder screw hole (222) is obliquely opened through the toothed tool holder (220). A CNC cutting tool (230) is installed in the positioning seat (221). The CNC cutting tool (230) is fastened and fixed in the positioning seat (221) by the cutting tool fixing screw (231) cooperating with the tool holder screw hole (222).

5. An eccentric rotary adjustable CNC face milling cutter according to claim 4, characterized in that, The positioning seat (221) is generally square, and the shape of the CNC blade (230) is not limited by the positioning seat (221), and can be triangular, square, polygonal and circular.

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