A rough-fine integrated blade for split type indexable profile disc cutter

Abstract

The utility model discloses a kind of rough-fine integrated blade for split type indexable forming disc milling cutter, it is related to tool technical field.The utility model includes tool body, the tool body surface is provided with rough-fine milling blade, internal hexagon screw is installed between the tool body and rough-fine milling blade, the tool body is round disc boss structure, the rough-fine milling blade is placed in the blade slot of tool body, the tool body one side is equipped with chip groove, rough-fine milling blade inside is equipped with blade mounting hole;The upper and lower two cutting edges of the rough-fine milling blade play different cutting roles, and are divided into side edge milling surface and top edge milling surface, and the actual profile of the machined workpiece is formed by the two.The utility model compared with traditional milling blade structure design, the milling blade of this milling blade adopts moving least square method to carry out the design of blade blade type, so that blade can be milled to meet the best profile of the machined workpiece in processing process, can improve the processing accuracy of internal gear, avoid the occurrence of multiple milling situation.

Description

Technical Field

[0001] This utility model belongs to the field of cutting tool technology, and in particular relates to a roughing and finishing insert for a split-type indexable disc milling cutter. Background Technology

[0002] In the machining and manufacturing process of internal gears, indexable milling cutters are mostly used for milling. Through the rotational motion of the spindle and the tooth feed motion, the blank material is efficiently removed, thereby completing the forming process of the internal gear. The milling cutter mainly consists of two parts: the cutter body and the milling inserts. Among them, the design of the cutting edge shape of the milling inserts plays a major role in constraining the accuracy of the internal gear tooth profile.

[0003] The current design of cutting inserts uses the least squares method with approximate circular arcs to approximate the actual tooth profile, which leads to a reduction in milling accuracy and fails to meet the gear machining tolerance requirements, thus slowing down the gear manufacturing process. Therefore, there is an urgent need for a high-precision forming milling insert that can ensure that the tooth profile obtained after gear machining meets the industry's required precision, thereby improving the manufacturing process of milling inserts.

[0004] To address these issues, we provide a roughing and finishing insert for a split-type indexable disc milling cutter. Utility Model Content

[0005] The purpose of this invention is to provide a roughing and finishing insert for a split-type indexable disc milling cutter, which solves the problem that the existing insert cutting edge design process uses the least squares method of approximating a circular arc to approximate the actual tooth groove profile, which will lead to a reduction in the milling accuracy.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to an integrated roughing and finishing insert for a split-type indexable disc milling cutter, comprising a cutter body, on which roughing and finishing inserts are disposed, and an internal hexagon screw is installed between the cutter body and the roughing and finishing inserts. The cutter body has a disc-shaped boss structure, and the roughing and finishing inserts are placed in the insert groove of the cutter body. A chip removal groove is provided on one side of the cutter body, and an insert mounting hole is provided inside the roughing and finishing inserts. The upper and lower cutting edges of the roughing and finishing inserts perform different cutting functions, namely a side milling surface and a top milling surface, which together constitute the actual profile of the workpiece.

[0008] The present invention is further configured such that the roughing and finishing milling inserts have a trapezoidal structure, with staggered teeth evenly distributed on both sides of the cutter body.

[0009] The present invention is further configured such that the side milling surface of the roughing and finishing milling insert is designed using the moving least squares method.

[0010] The present invention is further configured such that the top cutting surface of the roughing and finishing milling insert is designed using the moving least squares method.

[0011] The present invention is further configured such that the side cutting surface of the roughing and finishing milling insert adopts a front angle design. This design facilitates the milling of the side cutting edge, thereby protecting the milling of the cutting edge and extending the service life of the insert.

[0012] The present invention is further configured such that the main body material of the roughing and finishing milling inserts is coated cemented carbide and undergoes full annealing treatment.

[0013] The present invention has the following beneficial effects.

[0014] 1. Compared with the traditional milling cutter structure design, this utility model uses the moving least squares method to design the cutting edge shape, so that the cutter can mill the optimal profile that conforms to the workpiece during the machining process, which can improve the machining accuracy of internal gears and avoid the occurrence of multiple milling operations.

[0015] 2. The blade structure of this utility model has higher rigidity and hardness, ensuring a smooth machining process and reducing the likelihood of blade damage, thereby saving milling time. Furthermore, the blade with the top milling surface is fixed to the tool body by clamping rivets, which reduces vibration during milling and ensures the accuracy requirements of milling.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a roughing and finishing insert for a split-type indexable disc milling cutter.

[0019] Figure 2 This is a side view of a roughing and finishing insert for a split-type indexable disc milling cutter.

[0020] Figure 3 This is a schematic diagram of the roughing and finishing insert in a split-type indexable disc milling cutter.

[0021] Figure 4This is a front view of a roughing and finishing insert in a split-type indexable disc milling cutter.

[0022] Figure 5 This is a cross-sectional view of a roughing and finishing insert in a split-type indexable disc milling cutter.

[0023] In the attached diagram: 1. Tool body; 2. Roughing and finishing milling inserts; 3. Socket head screw; 4. Chip removal groove; 5. Insert mounting hole; 6. Side milling surface; 7. Top milling surface. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0025] Please see Figures 1-5 This utility model relates to an integrated roughing and finishing insert for a split-type indexable disc milling cutter, comprising a cutter body 1, with roughing and finishing inserts 2 disposed on the surface of the cutter body 1, and an internal hexagon screw 3 installed between the cutter body 1 and the roughing and finishing inserts 2. The cutter body 1 has a disc boss structure, and the roughing and finishing inserts 2 are placed in the insert groove of the cutter body 1. A chip removal groove 4 is provided on one side of the cutter body 1, and an insert mounting hole 5 is provided inside the roughing and finishing inserts 2. The upper and lower cutting edges of the roughing and finishing inserts 2 perform different cutting functions, and are divided into a side milling surface 6 and a top milling surface 7, which together constitute the actual profile of the workpiece.

[0026] Specifically: the cutter body 1 has a disc-shaped boss structure, providing a stable support base, facilitating the modular installation and replacement of roughing and finishing milling inserts 2, reducing the overall tool maintenance cost. The roughing and finishing milling inserts 2 are fixed in the insert groove of the cutter body 1 by internal hex screws 3, realizing quick disassembly, assembly and indexing functions. The chip removal groove 4 is opened on one side of the cutter body 1 to effectively guide the chips out, avoid tool wear or workpiece surface scratches caused by chip accumulation, and extend tool life. The insert mounting hole 5 ensures the precise positioning of the roughing and finishing milling inserts 2 and the cutter body 1, enhances insert rigidity, reduces machining vibration, and improves milling stability. Example 2

[0027] Please see Figures 1-5Based on Example 1, the roughing and finishing milling insert 2 has a trapezoidal structure with staggered teeth evenly distributed on both sides of the cutter body 1. The side milling surface 6 of the roughing and finishing milling insert 2 is designed using the moving least squares method, and the top milling surface 7 of the roughing and finishing milling insert 2 is designed using the moving least squares method. The side milling surface 6 of the roughing and finishing milling insert 2 adopts a rake angle design scheme. This design facilitates the milling of the side edge, thereby protecting the milling of the cutting edge and extending the service life of the insert. The main body material of the roughing and finishing milling insert 2 is coated cemented carbide and undergoes full annealing treatment.

[0028] Specifically: The roughing and finishing milling insert 2 has a trapezoidal structure with staggered teeth evenly distributed on both sides of the cutter body 1, optimizing the cutting force distribution, reducing single-edge load, and improving the overall durability of the tool. The side milling surface 6 and the top milling surface 7 are both designed using the moving least squares method, accurately approximating the theoretical profile of the workpiece, significantly reducing tooth profile error, and meeting the requirements of high-precision gear machining. The side milling surface 6 adopts a rake angle design scheme to reduce cutting resistance, avoid edge chipping, and at the same time reduce cutting heat and extend insert life. The roughing and finishing milling insert 2 is made of coated cemented carbide material and has undergone full annealing treatment, which combines high hardness and impact resistance, and is suitable for difficult-to-machine materials such as high-strength alloy steel.

[0029] The working principle of this utility model is as follows: The blade structure is designed using the moving least squares method to make the cutting edge curve of the forming milling cutter closer to the actual profile of the workpiece. The blade is optimized to improve the accuracy of milling. The disc boss structure of the cutter body 1 and the internal hexagon screw 3 form a double fixation to suppress cutting vibration. The chip removal groove 4 and the cutting fluid channel work together to discharge high-temperature chips in time, reduce the risk of blade thermal deformation, and ensure the stability of long-term continuous processing.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A roughing and finishing insert for a split-type indexable disc milling cutter, comprising a cutter body (1), characterized in that: The surface of the cutter body (1) is provided with rough and finish milling inserts (2), and an internal hex screw (3) is installed between the cutter body (1) and the rough and finish milling inserts (2). The cutter body (1) has a disc boss structure. The rough and finish milling inserts (2) are placed in the insert groove of the cutter body (1). A chip removal groove (4) is opened on one side of the cutter body (1). An insert mounting hole (5) is opened inside the rough and finish milling inserts (2). The upper and lower cutting edges of the rough and finish milling cutter (2) perform different cutting functions, and are divided into the side milling surface (6) and the top milling surface (7), which together constitute the actual profile of the workpiece.

2. The roughing and finishing insert for a split-type indexable disc milling cutter according to claim 1, characterized in that: The roughing and finishing milling cutter (2) has a trapezoidal structure, with staggered teeth evenly distributed on both sides of the cutter body (1).

3. The roughing and finishing insert for a split-type indexable disc milling cutter according to claim 1, characterized in that: The side cutting surface (6) of the roughing and finishing milling insert (2) adopts a front angle design. This design facilitates the milling of the side cutting edge, thereby protecting the milling of the cutting edge and extending the service life of the insert.

4. The roughing and finishing insert for a split-type indexable disc milling cutter according to claim 1, characterized in that: The main body material of the roughing and finishing milling inserts (2) is coated cemented carbide and is fully annealed.

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