Unequal-division rotary milling cutter head

Abstract

This utility model relates to an unequally divided rotary milling cutter head in the field of rotary milling cutter head technology. It includes a cutter head body with multiple sets of tool slots. The included angle between adjacent sets of tool slots is different. Each set of tool slots includes two grooves symmetrical about the center of the cutter head body. A tool clamp is installed in each groove and is fixed to the groove by fixing screws. The fixing screws are inclined, forming an acute angle with the cutter head body. This utility model allows for adjustment of the tool clamp precision before installation, improving installation efficiency and overall accuracy. The overall structure is reasonable, reducing vibration generated by the cutter head body during high-speed rotary cutting, reducing resonance, and facilitating use.

Description

Technical Field

[0001] This utility model belongs to the field of rotary milling cutter head technology, specifically relating to unequal-division rotary milling cutter heads. Background Technology

[0002] A cyclone milling cutter is a high-speed thread milling device used with a rotary milling machine. It uses a cutter head (carbide forming cutter) mounted on a tool holder on a high-speed rotating cutter head to machine the workpiece. Existing cyclone milling cutter holders are side-fixed when mounted on the cutter head, requiring high precision in fit and easily leading to tight contact between the tool holder and the cutter head body's side, leaving gaps on the bottom, which is detrimental to use. Furthermore, a set of cyclone milling cutter heads has 4-8 tool holders, and the runout accuracy of all tool holders must be less than 0.01mm. Current cyclone milling cutter heads rely on precision adjustment on the cutter head itself, resulting in low adjustment efficiency and poor accuracy. Therefore, a unequal-division rotary milling cutter head is needed to solve the above technical problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing an unequal-division rotary milling cutter head, including a cutter head body. The cutter head body is provided with multiple sets of tool slots, and the included angle between adjacent sets of tool slots is different. Each set of tool slots includes two grooves symmetrical about the center of the cutter head body. A tool clamp is provided in the groove, and the tool clamp is fixed to the groove by a fixing screw. The fixing screw is inclined and forms an acute angle with the cutter head body.

[0004] Preferably, the acute angle is 5°.

[0005] Preferably, the cutter head body is provided with three sets of cutter grooves, and the included angles between adjacent sets of cutter grooves are 67°, 60° and 53° respectively.

[0006] Preferably, the end of the cutter holder near the center of the cutter disc body is provided with a cutter head, and the end of the cutter holder away from the center of the cutter disc body is provided with an adjusting screw.

[0007] Preferably, the cutter head is connected to the cutter holder via a Torx screw.

[0008] Preferably, there are two fixing screws, which are distributed along the length of the tool holder.

[0009] This invention also includes other components that enable the unequal-division rotary milling cutter to function properly, all of which are conventional equipment in the art. Furthermore, devices or components not specified in this invention, such as tool holders, cutter heads, adjusting screws, fixing screws, Torx screws, etc., all employ conventional techniques and equipment in the art.

[0010] Working Principle: Multiple sets of tool slots with varying angles are used, and tool holders are installed within these slots to reduce resonance. The tool holders are connected to the tool slots via fixing screws. These screws form an angle with the cutter head body, allowing the cutter head body to bear force in both the bottom and side directions after the screws are tightened. This ensures close contact between the tool holders and the sides and bottom of the cutter head body. Side contact improves the axial positional accuracy of the tool holder after clamping, while bottom contact reduces vibration generated during high-speed rotation cutting. Adjusting screws are added to the tool holders, allowing for length adjustment using a dial indicator before mounting on the cutter head body. This reduces adjustment time and improves installation accuracy and efficiency.

[0011] This utility model has the following advantages: the tool holder precision can be adjusted before installation, which improves installation efficiency and overall precision; the overall structure is reasonable, which reduces the vibration generated by the cutter head body during high-speed rotation cutting, reduces resonance, and is beneficial to use. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of the unequal-division rotary milling cutter disc in an embodiment of this utility model;

[0014] Figure 2 for Figure 1 Cross-sectional view of the connection between the fixing screw and the cutter head body;

[0015] Figure 3 This is a diagram showing the state of the tool holder when fine-tuning with a dial indicator in this embodiment;

[0016] Figure 4 for Figure 3 A three-dimensional image.

[0017] In the diagram: 1. Cutter head body; 2. Cutter clamp; 3. Fixing screw; 4. Adjusting screw; 5. Cutter head; 6. Torx screw; 7. Dial indicator; 8. Tooling. Detailed Implementation

[0018] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0019] Example

[0020] like Figure 1-4As shown, this utility model provides an unequal-division rotary milling cutter head, including a cutter head body 1. The cutter head body 1 has three sets of tool slots, with different included angles between adjacent sets of tool slots, namely 67°, 60°, and 53°. Each set of tool slots includes two grooves symmetrical about the center of the cutter head body 1. A tool holder 2 is provided in the groove, and the tool holder 2 is fixed to the groove by a fixing screw 3 (hexagonal screw). The fixing screw 3 is inclined, and the fixing screw 3 forms an acute angle of 5° with the cutter head body 1.

[0021] The cutter clip 2 has a cutter head 5 at one end near the center of the cutter disc body 1, and an adjusting screw 4 at the other end away from the center of the cutter disc body 1. The adjusting screw is threaded into the cutter clip, and the overall length of the adjusting screw and the cutter clip can be adjusted by rotating the adjusting screw.

[0022] The cutter head 5 is connected to the cutter clip 2 via a Torx screw 6.

[0023] Two fixing screws 3 are provided, and the two fixing screws 3 are distributed along the length direction of the blade clip 2.

[0024] By setting multiple sets of tool slots with different included angles and installing tool clips 2 in the tool slots, resonance is reduced. Tool clips 2 are connected to the tool slots by fixing screws 3. The fixing screws 3 and the cutter head body 1 form a certain angle, so that after the fixing screws 3 are tightened, the cutter head body 1 can be subjected to force in both the bottom and side directions, ensuring that the tool clips 2 and the side and bottom surfaces of the cutter head body 1 are in contact and fit together. Side fit can improve the axial position accuracy of the tool clips 2 after clamping; bottom fit can reduce the vibration generated by the cutter head body 1 during high-speed rotating cutting. The tool clips 2 are equipped with adjusting screws. With the help of dial indicator 7 and tooling 8, the total length of the tool clips 2 and adjusting screws can be adjusted before being installed on the tool slots of the cutter head body 1, reducing the adjustment time and improving the installation accuracy and efficiency. The specific operation during adjustment is as follows: Place the tool clips on the tooling, the tooling structure is as follows. Figure 3-4 As shown, the tool holder is pressed against the tooling wall, the end of the adjusting screw abuts against the tooling, and the tool head of the tool holder abuts against the dial indicator. According to the size of the cutter disc body, the total length of all tool holders and adjusting screws is adjusted to be consistent. Then the tool holder is installed on the cutter disc body. In this embodiment, the thickness accuracy of the tool groove position on the cutter disc body can reach 0.005mm, and the thickness accuracy of the tool holder is within 0.005mm.

[0025] The dial indicator, adjusting screw, tool holder, Torx screw, and fixing screw involved in the unequal-division rotary milling cutter heads in the above embodiments are all existing technologies. This application does not make any improvements to them, but only utilizes their existing functions. For their specific structure and principle, please refer to the product manual or existing technical data, which are all existing technologies.

[0026] The embodiments of this utility model have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary milling cutter head with unequal division, comprising a cutter head body, characterized in that: The cutter head body is provided with multiple sets of cutter grooves, and the included angle between adjacent sets of cutter grooves is different. Each set of cutter grooves includes two grooves symmetrical about the center of the cutter head body. A cutter clamp is provided in the groove. The cutter clamp is fixed to the groove by a fixing screw. The fixing screw is set at an angle, and an acute angle is formed between the fixing screw and the cutter head body.

2. The unequal-division rotary milling cutter head according to claim 1, characterized in that: The acute angle is 5°.

3. The unequal-division rotary milling cutter head according to claim 1, characterized in that: The cutter head body is provided with three sets of cutter grooves, and the included angles between adjacent sets of cutter grooves are 67°, 60° and 53° respectively.

4. The unequal-division rotary milling cutter head according to claim 1, characterized in that: The cutter clip has a cutter head at one end near the center of the cutter disc body, and an adjustment screw at the other end away from the center of the cutter disc body.

5. The unequal-division rotary milling cutter head according to claim 4, characterized in that: The cutter head is connected to the cutter holder via a Torx screw.

6. The unequal-division rotary milling cutter head according to claim 1, characterized in that: There are two fixing screws, which are distributed along the length of the tool holder.

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