Staggered-tooth thread milling cutter

Abstract

The utility model relates to the technical field of machining cutters, in particular to a staggered-tooth thread milling cutter. Comprising a cutter handle and a cutter body, the cutter body is provided with four chip grooves and four sets of cutting teeth, the cutter body is fixedly connected with the cutter handle and located on the outer side of the cutter handle, the four chip grooves are circumferentially distributed along the axial center line of the cutter body, the four sets of cutting teeth are circumferentially distributed along the axial center line of the cutter body in a staggered tooth shape, and the cutting teeth are fixedly connected with the cutter body and located on the outer side of the cutter body. Therefore, the distribution structure of the milling cutter is improved, the milling cutter is more suitable for machining high-hardness, high-toughness and other difficult-to-machine materials, and along with the increase of the staggered teeth, the cutting precision and stability of the cutter are effectively improved, so that the higher-precision machining requirement can be met.

Description

Technical Field

[0001] This utility model relates to the field of machining tool technology, and in particular to a staggered tooth thread milling cutter. Background Technology

[0002] A staggered-tooth thread milling cutter is a machine tool tool specifically designed for machining threads. Based on a standard thread milling cutter, it modifies the arrangement of the teeth, causing adjacent teeth to be staggered by a certain angle or distance during cutting, thus forming a staggered tooth structure. This helps reduce cutting forces and improve cutting efficiency and machining accuracy. Traditional machining tools not only have small cutting depths and slow machining speeds, but also short tool lifespans. This is mainly due to: resonance between the tool and workpiece during large cutting depths, which prevents increased machining speeds; and the fact that workpiece resonance significantly shortens tool lifespan.

[0003] To address the aforementioned issues, existing patent (CN107350532A) discloses a staggered spiral arc staggered tooth wave-shaped milling cutter, comprising a shank and a cutting edge. The cutting edge includes a peripheral cutting edge and a bottom cutting edge, which are staggered and complementary. Multiple peripheral cutting edges are divided at unequal angles, and the spiral grooves of each peripheral cutting edge are also at unequal spiral angles. Multiple bottom cutting edges are also divided at unequal angles, and the tip of the bottom cutting edge is provided with an anti-chipping arc R angle. The peripheral cutting edge is provided with wave-shaped arc teeth. Based on the cutting force staggered complementary method in mechanics, the staggered spiral complementary design of the peripheral cutting edge and the bottom cutting edge can effectively disperse the extrusion force generated during cutting, reduce the recoil force on the tool, and greatly reduce the resonance between the tool and the workpiece during cutting. This milling cutter can be widely used in the processing of various materials, especially for difficult-to-machine materials, where it has significant advantages. The tool adopts a special geometric angle design, resulting in a high material removal rate, high precision, long service life, and anti-vibration and anti-chatter characteristics.

[0004] However, in the current technology, the staggered tooth distribution of staggered tooth thread milling cutters is relatively small, resulting in low cutting efficiency in actual use. This leads to low cutting efficiency and machining accuracy when staggered tooth thread milling cutters are used. Utility Model Content

[0005] The purpose of this utility model is to provide a staggered tooth thread milling cutter, which aims to solve the technical problem that the staggered tooth distribution of existing staggered tooth thread milling cutters is small, resulting in low cutting efficiency in actual use, and thus low cutting efficiency and machining accuracy when the staggered tooth thread milling cutter is used.

[0006] To achieve the above objectives, this utility model employs a staggered-tooth thread milling cutter, comprising a shank and a cutter body. The cutter body has four chip removal grooves and four sets of cutting teeth. The cutter body is fixedly connected to the shank and located on the outside of the shank. The four chip removal grooves are circumferentially distributed along the axial center line of the cutter body, and the four sets of cutting teeth are staggered along the axial center line of the cutter body. The cutting teeth are fixedly connected to the cutter body and located on the outside of the cutter body.

[0007] The tool handle includes a handle rod, two clamping grooves and two drain grooves. The handle rod is fixedly connected to the tool body and is located on the side of the tool body away from the chip removal groove. The two clamping grooves are symmetrically arranged and are located on the outside of the handle rod. The drain grooves obliquely penetrate the tool body.

[0008] The handle has a first chamfer α, which is 45°.

[0009] The chip removal groove has a depth and diameter of 3.5 mm.

[0010] The cutting tool body has a first center line, and each set of cutting teeth has eight front teeth and eight rear teeth. The front teeth form a second angle β with the first center line, and the second angle β is 9°-10°. The distance between the front teeth and the rear teeth is 1.8mm-2.0mm.

[0011] There is a second center line between every two sets of cutting teeth, and the cutting teeth form a third angle γ with the second center line, and the third angle γ is 30°. The distance between the two second center lines is 3mm.

[0012] This utility model discloses a staggered-tooth thread milling cutter. In practical use, the cutter shank is fixed below the machine tool grinding equipment. The workpiece is cut by the four sets of cutting teeth, which can effectively improve the cutting accuracy and efficiency. The four chip removal grooves effectively prevent the coolant from directly adhering to the cutter body, which facilitates better dispersal of the heat generated during the cutting process and reduces the cutting temperature. This solves the problem of low cutting efficiency and machining accuracy of current staggered-tooth thread milling cutters. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the staggered tooth thread milling cutter of this utility model.

[0015] Figure 2 This is a schematic diagram of the end face structure of the cutter body of the staggered-tooth thread milling cutter of this utility model.

[0016] Figure 3 This is a cross-sectional view of two adjacent cutting teeth of the staggered-tooth thread milling cutter of this utility model.

[0017] 1-Tool holder, 101-Handle bar, 102-Clamping groove, 103-Drainage groove, 2-Tool body, 3-Chip removal groove, 4-Cutting teeth, 5-Rear teeth, 6-Rear teeth. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] Please see Figures 1 to 3 This utility model provides a staggered-tooth thread milling cutter, including a shank 1 and a cutter body 2. The shank 1 includes a shank 101, two clamping grooves 102 and two drainage grooves 103. The cutter body 2 has four chip removal grooves 3 and four sets of cutting teeth 4. Each set of cutting teeth 4 has eight front teeth 5 and eight rear teeth 6. The cutter body 2 is fixedly connected to the shank 1 and is located on the outside of the shank 1. The four chip removal grooves 3 are circumferentially distributed along the axial center line of the cutter body 2. The four sets of cutting teeth 4 are staggered along the axial center line of the cutter body 2. The cutting teeth 4 are fixedly connected to the cutter body 2 and are located on the outside of the cutter body 2. The aforementioned solution solves the problem that the staggered-tooth thread milling cutter has a small number of staggered teeth, resulting in low cutting efficiency in actual use, which leads to low cutting efficiency and machining accuracy during operation.

[0020] In this embodiment, the tool holder 1 is fixed below the machine tool grinding equipment. The workpiece is cut by the four sets of cutting teeth 4 arranged in a staggered pattern, which can effectively improve the cutting accuracy and efficiency. The four chip removal grooves 3 effectively prevent the coolant from directly adhering to the tool body 2, which facilitates better dispersion of the heat generated during the cutting process and reduces the cutting temperature. This solves the problem of low cutting efficiency and machining accuracy of staggered tooth thread milling cutters during operation.

[0021] Furthermore, the handle 1 includes a handle 101, two clamping grooves 102 and two drain grooves 103. The handle 101 is fixedly connected to the blade body 2 and is located on the side of the blade body 2 away from the chip removal groove 3. The two clamping grooves 102 are symmetrically arranged and are located on the outside of the handle 101. The drain grooves 103 obliquely penetrate the blade body 2.

[0022] In this embodiment, the clamping groove 102 facilitates the clamping and fixing of the milling cutter by the machine tool, enabling more stable machining operations during cutting. The drain groove 103 prevents coolant from accumulating on the shank 101 and is used for draining coolant.

[0023] Furthermore, the handle 101 has a first chamfer α, which is 45°.

[0024] In this embodiment, the first chamfer α facilitates the installation of the tool holder 1 and the machine tool, making the installation of the machine tool more stable.

[0025] Furthermore, the depth and diameter of the chip removal groove 3 are 3.5 mm.

[0026] In this embodiment, the depth of the chip removal groove 3 is 3.5 mm. Practice has shown that this depth is more conducive to the cooling liquid carrying the cutting chips out, helps to better disperse the heat generated during the cutting process, reduces the cutting temperature, thereby reducing the thermal deformation and surface burn of the workpiece, thus improving the roughness of the machined surface and avoiding the chips from affecting the cutting accuracy.

[0027] Furthermore, the cutter body 2 has a first center line, and each set of cutting teeth 4 has eight front teeth 5 and eight rear teeth 6. The front teeth 5 form a second included angle β with the first center line, and the second included angle β is 9°-10°. The distance between the front teeth 5 and the rear teeth 6 is 1.8mm-2.0mm.

[0028] In this embodiment, each set of cutting teeth 4 ensures 16 teeth on one side. The cooperation of multiple front teeth 5 and multiple rear teeth 6, through the increase in the number of teeth, makes the cutting force more evenly distributed on the tool, which helps to reduce vibration and tool wear during the cutting process, thereby improving cutting efficiency and machining accuracy, and improving the cutting accuracy of the workpiece. The second included angle β is more conducive to the cutting operation of the front teeth 5. There is a distance of 1.8mm-2.0mm between each front tooth 5 and each rear tooth 6, which enables the cutting teeth 4 to stably cut the workpiece, thereby more effectively reducing the resistance during the cutting process, making it easier for the milling cutter to cut into the workpiece, and increasing the cutting speed.

[0029] Furthermore, there is a second center line between every two sets of cutting teeth 4, and the cutting teeth 4 form a third included angle γ with the second center line, and the third included angle γ is 30°. The distance between the two second center lines is 3mm. The uniform distribution of the staggered teeth makes the overall structure of the tool more stable and more rigid, so as to better resist deformation and damage during the cutting process. In addition, due to the reduction of cutting force and cutting resistance, the wear rate of the tool will also be reduced accordingly, thereby extending the service life of the tool.

[0030] In this embodiment, the third included angle γ is 30°, which makes the stability between the two cutting teeth 4 better and facilitates the continuous operation of the milling cutter.

[0031] The beneficial effects of this utility model are as follows: The clamping groove 102 facilitates the clamping and fixing of the shank 101 by the machine tool equipment; the staggered distribution of the cutting teeth 4 performs cutting operations on the workpiece; the cooperation of multiple front teeth 5 and multiple rear teeth 6 improves the cutting efficiency of the workpiece; the cooling liquid sprayed during operation is prevented from accumulating on the shank 101 by the drain groove 103; and the four chip removal grooves 3 facilitate the direct discharge of chips carried by the cooling liquid, effectively preventing chips from directly adhering to the cutter body 2, which is beneficial to the accuracy of the machining operation. This improves the distribution structure of the milling cutter, making it more suitable for machining difficult-to-machine materials such as high hardness and high toughness. Furthermore, with the increase of staggered teeth, the cutting accuracy and stability of the tool are effectively improved, so as to meet the requirements of higher precision machining.

[0032] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A staggered-tooth thread milling cutter, characterized in that, The tool includes a handle and a tool body. The tool body has four chip removal grooves and four sets of cutting teeth. The tool body is fixedly connected to the handle and is located on the outside of the handle. The four chip removal grooves are circumferentially distributed along the axial center line of the tool body. The four sets of cutting teeth are staggered along the axial center line of the tool body. The cutting teeth are fixedly connected to the tool body and are located on the outside of the tool body. The cutter body has a first center line, and each set of cutting teeth has eight front teeth and eight rear teeth. The front teeth form a second angle β with the first center line. There is a second center line between every two sets of cutting teeth, and the cutting teeth form a third angle γ with the second center line.

2. The staggered-tooth thread milling cutter as described in claim 1, characterized in that, The handle includes a handle bar, two clamping grooves and two drain grooves. The handle bar is fixedly connected to the cutter body and is located on the side of the cutter body away from the chip removal groove. The two clamping grooves are symmetrically arranged and are located on the outside of the handle bar. The drain grooves obliquely penetrate the cutter body.

3. The staggered-tooth thread milling cutter as described in claim 2, characterized in that, The handle has a first chamfer α, which is 45°.

4. The staggered-tooth thread milling cutter as described in claim 2, characterized in that, The depth and diameter of the chip removal groove are 3.5 mm.

5. The staggered-tooth thread milling cutter as described in claim 2, characterized in that, The second included angle β is 9°-10°, and the distance between the anterior teeth and the posterior teeth is 1.8mm-2.0mm.

6. The staggered-tooth thread milling cutter as described in claim 5, characterized in that, The third included angle γ is 30°, and the distance between the two second center lines is 3mm.

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