Gear shaping cutter with alignment structure
Patent Information
- Application Number
- CN202522023811.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-09-19
AI Technical Summary
本实用新型公开了一种带找正结构的插齿刀，所述插齿刀轴身上具有与刀齿结构中心垂直的铣扁结构；安装插齿刀时，通过旋转机床刀具主轴，使插齿刀的铣扁结构与回转工作台的进给方向平行，确定此状态下的刀具主轴回转角度。用此角度进行调整可准确的保证内齿齿槽与外齿齿槽之间的位置度要求。这种操作方式无需复杂的测量工具和繁琐的计算过程，大大简化了操作流程，减少了调试时间。操作人员能够更加迅速、准确地将插齿刀安装到合适位置，从而显著提高了加工效率，降低了生产成本。
Smart Images
Figure CN224750265U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cutting tool processing technology, and relates to a gear shaping cutter with a alignment structure. Background Technology
[0002] In the power transmission system of mining trucks, the intermediate shaft plays a crucial role. It is responsible for transmitting the power generated by the engine stably and efficiently to subsequent transmission components, ensuring the normal operation of the mining truck under complex and harsh working conditions. The structural design of the intermediate shaft of a mining truck is relatively complex, and it is usually equipped with internal and external tooth grooves. The precise machining of these grooves has a decisive impact on the performance and service life of the intermediate shaft.
[0003] In the machining of internal gears on the intermediate shaft of a mining truck, gear shaping is a commonly used method, and the installation and positioning of the gear shaping cutter is a key step in ensuring machining accuracy. Traditional gear shaping cutter installation mainly adopts a conical (or cylindrical) positioning method. This positioning method can meet the machining requirements of general workpieces to a certain extent, but it exposes many limitations in machining scenarios such as the intermediate shaft of a mining truck's dual intermediate shaft gearbox, where the positional accuracy between the two gear rings is extremely high.
[0004] When using a conical (or cylindrical) positioning method to install the gear shaper, the precise positional relationship between the center of the gear shaper teeth and the rotation angle of the machine tool spindle cannot be directly determined due to the inherent characteristics of this positioning method. The rotation angle of the machine tool spindle plays a decisive role in the machining position of the internal tooth groove. However, the uncertainty in the positional relationship between the center of the teeth and the spindle rotation angle makes it difficult to accurately control the position of the internal tooth groove during machining, failing to meet the precise positional requirements of the internal and external tooth grooves on the intermediate shaft of the mining truck. Traditional methods can only adjust this through multiple trial cuts. Operators need to continuously and manually adjust the initial rotation angle of the machine tool spindle and the initial rotation angle of the rotary table based on the trial cut results. After each adjustment, a trial cut and inspection must be performed again until the position of the machined internal tooth groove meets the accuracy requirements. This wastes manpower and is time-consuming, severely impacting production efficiency. In the context of large-scale production of mining trucks, this inefficient adjustment method cannot meet the needs of production schedule and cost control. Utility Model Content
[0005] The purpose of this utility model is to provide a gear shaping cutter with a alignment structure to solve the technical problem in the prior art where it is difficult to determine the positional relationship between the center of the gear shaping cutter teeth and the rotation angle of the machine tool spindle after the gear shaping cutter is installed, resulting in low production efficiency.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a gear shaping cutter with an alignment structure, including a gear shaping cutter shaft body; one end of the gear shaping cutter shaft body is a mounting taper shank for connecting a power source; the other end of the gear shaping cutter shaft body has a cutting tooth structure; the gear shaping cutter shaft body is also provided with a milling flattening structure; the milling flattening structure is located between the mounting taper shank and the cutting tooth structure.
[0007] Furthermore, the cutting tooth structure includes a plurality of cutting teeth distributed circumferentially along the shaft of the gear shaping cutter.
[0008] Furthermore, the plurality of cutting teeth are equidistantly distributed.
[0009] Furthermore, the perpendicularity tolerance of the milling structure relative to any cutting tooth is no greater than 0.005 mm.
[0010] Furthermore, the mounting cone shank has a truncated cone structure, and the diameter of the end of the mounting cone shank closest to the milling flat structure is larger than the diameter of the other end.
[0011] Furthermore, the roughness Ra of the milled flat structure is no greater than 0.32 μm.
[0012] Furthermore, the hardness of the mounting cone shank is not less than HRC35.
[0013] Furthermore, the hardness of the blade structure is HRC63~HRC66.
[0014] Furthermore, the mounting cone shank and the milling flattening structure are integrally formed.
[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a gear shaper cutter with a alignment structure. The cutter's spindle has a milling flattening structure perpendicular to the center of the tooth structure. When installing the cutter, the milling flattening structure is aligned parallel to the feed direction of the rotary table by rotating the machine tool spindle, thus determining the spindle rotation angle in this state. Adjusting this angle accurately ensures the positional accuracy between the internal and external tooth grooves. This operation method eliminates the need for complex measuring tools and tedious calculations, greatly simplifying the operation process and reducing debugging time. Operators can more quickly and accurately install the gear shaper cutter in the appropriate position, thereby significantly improving processing efficiency and reducing production costs.
[0016] Furthermore, the mounting taper shank of this invention adopts a truncated cone structure; this design enables the mounting taper shank to produce a better self-locking effect when connected to the power source, enhancing the stability of the connection. During machining, the tool is subjected to a large cutting force, and this stable connection can prevent the tool from loosening or falling off, ensuring the continuity and stability of machining, and avoiding machining quality degradation and production accidents caused by tool installation problems.
[0017] Furthermore, the hardness of the mounting taper shank of this invention is not less than HRC35, and the hardness of the cutting tooth structure is within the range of HRC63-HRC66. This higher hardness allows the tool to better resist wear and deformation during prolonged cutting operations. The cutting tooth structure directly participates in the cutting process, and its high hardness ensures it remains sharp even when cutting high-hardness materials, reducing the frequency of tool replacement, extending tool life, and lowering production costs. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of a gear hobbing cutter with an alignment structure according to this utility model; Figure 2 This utility model Figure 1 K-direction view; Figure 3 This is a schematic diagram of the alignment and adjustment of the gear shaping cutter of this utility model.
[0020] Among them: 1-installing tapered shank; 2-milling flattening structure; 3-cutting teeth. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0026] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] The present invention will now be described in further detail with reference to the accompanying drawings: See Figure 1 and Figure 2 This utility model discloses a gear shaping cutter with a alignment structure, including a gear shaping cutter shaft; one end of the gear shaping cutter shaft is a mounting taper shank 1 for connecting a power source; the other end of the gear shaping cutter shaft has a cutting tooth structure; a milling flattening structure 2 is also provided on the gear shaping cutter shaft; the milling flattening structure 2 is located between the mounting taper shank 1 and the cutting tooth structure. In use, by rotating the machine tool spindle, the milling flattening structure 2 of the gear shaping cutter is made parallel to the feed direction of the rotary table, and the spindle rotation angle in this state is determined. Adjusting this angle can accurately ensure the positional accuracy requirements between the internal and external tooth grooves. This operation method eliminates the need for complex measuring tools and tedious calculations, greatly simplifying the operation process and reducing debugging time. Operators can more quickly and accurately install the gear shaping cutter into the appropriate position, thereby significantly improving processing efficiency and reducing production costs.
[0028] In one feasible embodiment of this utility model, the cutting tooth structure includes a plurality of cutting teeth 3 evenly distributed along the circumference of the gear shaping cutter shaft. The perpendicularity tolerance of the milling flattening structure 2 relative to any cutting tooth 3 is no greater than 0.005mm, ensuring that the relative positional relationship between the tool and the rotary table can be determined more accurately during the alignment operation using the milling flattening structure 2, thereby providing a reliable basis for subsequently ensuring the accurate positional accuracy of the internal and external tooth grooves. The surface roughness Ra of the milling flattening structure 2 is no greater than 0.32μm, reducing friction and errors caused by surface roughness during rotation and adjustment, further improving the accuracy and stability of alignment. The mounting cone shank 1 is a frustum conical structure, with the diameter of the end of the mounting cone shank 1 closest to the milling flattening structure 2 being larger than the diameter of the other end. This design allows the mounting cone shank 1 to produce a better self-locking effect when connected to the power source, enhancing the stability of the connection and ensuring the continuity and stability of machining.
[0029] In one feasible embodiment of this utility model, the hardness of the mounting taper shank 1 is not less than HRC35. The hardness of the cutting tooth structure is HRC63~HRC66. Higher hardness allows the tool to better resist wear and deformation during long-term cutting processes. The cutting tooth structure directly participates in the cutting work; high hardness ensures it remains sharp when cutting high-hardness materials, reducing tool replacement frequency, extending tool life, and lowering production costs. The high hardness of the mounting taper shank 1 also ensures it will not be damaged by frequent stress during connection and power transmission to the power source. The mounting taper shank 1 and the milling flattening structure 2 are integrally formed, eliminating connection gaps and stress concentration points between them, making the entire tool structure more complete and robust. During processing, the tool is subjected to complex forces and vibrations; the integrally formed structure effectively disperses these forces, reducing structural damage caused by excessive local stress, improving tool reliability and stability, and ensuring stable processing quality.
[0030] The working process / working principle of this utility model is as follows: When adjusting a gear shaper cutter with a aligning structure for the first time, first zero the angle of the rotary table and fix the gauge to the rotary table using a gauge holder. Install the gear shaper cutter and rotate the machine tool spindle so that the milling structure 2 of the gear shaper cutter is parallel to the feed direction of the rotary table (e.g., ...). Figure 3 As shown, the rotary table moves in the feed direction, allowing the gauge to detect the height difference between the two ends of the flat structure 2 milled by the gear shaper cutter. The height difference is adjusted to zero by rotating the machine tool spindle. The spindle rotation angle in this state is recorded and set as the initial spindle rotation angle. Then, the required rotary table angle to ensure the positional accuracy between the internal and external tooth grooves of the part is determined through trial cutting, and the initial table rotation angle is set.
[0031] When changing the gear shaper cutter, you only need to find the milling position of the gear shaper cutter, record the new tool spindle rotation angle, and set this angle as the new tool spindle initial rotation angle. This will ensure the positional accuracy between the internal and external tooth grooves, and there is no need to make trial cuts and adjustments.
[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or 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 gear hobbing cutter with an alignment structure, characterized in that, It includes a gear shaping cutter shaft body; one end of the gear shaping cutter shaft body is a mounting taper shank (1) for connecting a power source; the other end of the gear shaping cutter shaft body has a cutting tooth structure; the gear shaping cutter shaft body is also provided with a milling flattening structure (2); the milling flattening structure (2) is located between the mounting taper shank (1) and the cutting tooth structure.
2. A gear hobbing cutter with an alignment structure according to claim 1, characterized in that, The cutting tooth structure includes a number of cutting teeth (3) distributed circumferentially along the shaft of the gear shaping cutter.
3. A gear hobbing cutter with an alignment structure according to claim 2, characterized in that, The plurality of cutting teeth (3) are equidistantly distributed.
4. A gear hobbing cutter with an alignment structure according to claim 2, characterized in that, The perpendicularity tolerance of the milling structure (2) relative to any cutting tooth (3) is no greater than 0.005 mm.
5. A gear hobbing cutter with an alignment structure according to claim 1, characterized in that, The mounting cone shank (1) has a truncated cone structure, and the diameter of the end of the mounting cone shank (1) closest to the milling flat structure (2) is larger than the diameter of the other end.
6. A gear hobbing cutter with an alignment structure according to claim 1, characterized in that, The roughness Ra of the milled flat structure (2) is not greater than 0.32 μm.
7. A gear hobbing cutter with an alignment structure according to claim 1, characterized in that, The hardness of the mounting cone (1) is not less than HRC35.
8. A gear hobbing cutter with an alignment structure according to claim 1, characterized in that, The hardness of the blade structure is HRC63~HRC66.
9. A gear hobbing cutter with an alignment structure according to claim 1, characterized in that, The mounting cone shank (1) and the milling flattening structure (2) are integrally formed.