Stepped milling cutter for numerical control machining of high-temperature alloy

Abstract

The utility model relates to the field of milling cutters, in particular to a stepped milling cutter for numerical control machining of high-temperature alloy, which comprises a mounting shaft, a lengthened shaft and a blade. A lengthening shaft is arranged above the mounting shaft; a plurality of groups of blades for cutting high-temperature alloy are linearly sleeved outside the lengthening shaft and the mounting shaft; according to specific material characteristics and machining requirements, the mounting shaft and the lengthened shaft are assembled firstly, meanwhile, the blade is arranged outside the mounting shaft and the lengthened shaft in a sleeving mode, and after the rear distance is adjusted, the blade can be fixed for use; parameters such as the cutting thickness and the feeding amount of each cutter tooth can be flexibly set according to material characteristics and specific machining requirements of high-temperature alloy, so that the cutter can keep an optimal cutting state in the cutting process, the cutting performance of the cutter is fully exerted, the cutting speed and the feeding speed are improved, the machining time is shortened, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of milling cutters, and in particular to a stepped milling cutter for CNC machining of high-temperature alloys. Background Technology

[0002] Numerical control (NC) machining is an advanced manufacturing technology that uses digital information to control the machining process. CNC machining of high-temperature alloys is a type of tool specifically designed for cutting high-temperature alloy materials during CNC machining. It is named for the stepped distribution of its cutting teeth. The cutting edges of the tool are arranged in a stepped manner along the axial direction. This design increases the contact line length between the tool and the workpiece, allowing for a more uniform distribution of cutting force during cutting and reducing the load borne by each cutting tooth.

[0003] Most existing stepped end mills adopt an integrated structure. Due to the high hardness and strength of high-temperature alloy materials, they are difficult to process. Cutting parameters need to be adjusted according to specific material properties and processing requirements. If the tool distance is not adjustable, it means that parameters such as the cutting thickness and feed rate of each tooth cannot be flexibly changed, making it difficult to keep the tool in the best state during the cutting process. This limits the improvement of cutting speed and feed rate and increases processing time.

[0004] Therefore, since most existing stepped end mills adopt an integrated structure, and high-temperature alloy materials require adjustments to cutting parameters based on their characteristics, if the tool distance is not easily adjustable, it will limit the improvement of cutting speed and feed rate, reducing work efficiency. A stepped end mill for CNC machining of high-temperature alloys can be designed, adopting an adjustable stepped end mill structure to improve the applicability of the stepped end mill. Utility Model Content

[0005] To overcome the problem that most existing stepped end mills adopt an integrated structure, and because high-temperature alloy materials require adjustments to cutting parameters based on their characteristics, if the tool distance is not easily adjustable, it will limit the improvement of cutting speed and feed rate, thus reducing work efficiency.

[0006] The technical solution of this utility model is as follows: a stepped milling cutter for CNC machining of high-temperature alloys, comprising a mounting shaft, an extension shaft, and cutting inserts; an extension shaft is provided above the mounting shaft, and multiple sets of cutting inserts for cutting high-temperature alloys are linearly sleeved on the outside of both the extension shaft and the mounting shaft; multiple sets of mounting holes are linearly opened around the outside of both the mounting shaft and the extension shaft; a fixing ring is installed in the middle of the cutting inserts; multiple sets of mounting bolts are circumferentially inserted around the upper and lower sides of the fixing ring; the mounting bolts pass through the fixing ring and are positioned and connected to the mounting shaft or the extension shaft through the mounting holes.

[0007] Furthermore, a first circular snap-fit ​​groove is provided above the mounting shaft.

[0008] Furthermore, a threaded groove is provided on the inner wall below the mounting shaft.

[0009] Furthermore, a second circular snap-fit ​​groove is provided above the extended shaft, and a circular snap-fit ​​block is installed at the lower end of the extended shaft.

[0010] Furthermore, the circular snap-fit ​​block drives the extension shaft to be positioned and connected to the mounting shaft through the first circular snap-fit ​​groove, and the circular snap-fit ​​block drives a set of extension shafts to be positioned and connected to them through the second circular snap-fit ​​groove on another set of extension shafts.

[0011] Furthermore, a pin sleeve is inserted through the center of the circular snap-fit ​​block, and a pin rod is fitted inside the pin sleeve.

[0012] Furthermore, the retaining ring is fitted onto the outside of the mounting shaft or the extended shaft.

[0013] The beneficial effects of this utility model are as follows: Based on the specific material characteristics and processing requirements, we first need to carefully and precisely assemble the mounting shaft and the extension shaft. During assembly, it is essential to ensure a stable connection and good coaxiality between the two to guarantee the stability of subsequent processing. Simultaneously, the cutting blades must be carefully fitted onto the outside of the mounting shaft and the extension shaft. This step requires meticulous operation to ensure accurate blade placement and a tight fit with the shaft body. Next, we need to carefully adjust the spacing between the cutting blades. Through precise measurement and adjustment, the relative position of each blade is optimized. After adjustment, it can be fixed in place, ensuring that the blade position remains stable throughout the entire processing process. Furthermore, through… The adjustable stepped end mill structure allows us to flexibly set key parameters such as the cutting thickness and feed rate of each tooth according to the characteristics of high-temperature alloys and specific machining requirements. This adjustability ensures that the tool maintains optimal cutting conditions during the cutting process, fully utilizing its cutting performance. This not only significantly improves cutting speed and feed rate, shortens machining time, and increases overall machining efficiency, but also allows for more precise control of the relative position between the tool and the workpiece. This precise control ensures that the cutting depth of each tooth remains consistent, thereby greatly improving the dimensional accuracy of the machining and making the machined workpiece more in line with design requirements, meeting high-quality production standards. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the first circular snap-fit ​​groove structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the extended shaft structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the fixing ring structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the mounting bolt structure of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Mounting shaft; 2. Extended shaft; 3. Blade; 101. First circular snap-fit ​​groove; 102. Mounting hole; 103. Threaded groove; 201. Second circular snap-fit ​​groove; 202. Circular snap-fit ​​block; 203. Pin sleeve; 204. Pin rod; 301. Fixing ring sleeve; 302. Mounting bolt. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] like Figures 1-5 As shown, a stepped milling cutter for CNC machining of high-temperature alloys includes a mounting shaft 1, an extension shaft 2, and inserts 3. The extension shaft 2 is located above the mounting shaft 1. Multiple sets of inserts 3 for cutting high-temperature alloys are linearly sleeved on the outside of both the extension shaft 2 and the mounting shaft 1. Multiple sets of mounting holes 102 are linearly circumferentially formed on the outside of both the mounting shaft 1 and the extension shaft 2. A fixing ring 301 is installed in the middle of the insert 3. Multiple sets of mounting bolts 302 are circumferentially passed through the upper and lower sides of the fixing ring 301. The mounting bolts 302 pass through the fixing ring 301 and are positioned and connected to the mounting shaft 1 or the extension shaft 2 through the mounting holes 102.

[0023] A first circular snap-fit ​​groove 101 is provided above the mounting shaft 1. The extended shaft 2 is driven by the circular snap-fit ​​block 202 to be positioned and connected to the mounting shaft 1 through the first circular snap-fit ​​groove 101.

[0024] A threaded groove 103 is provided on the inner wall below the mounting shaft 1. The machine is threadedly connected to the mounting shaft 1 along the threaded groove 103 and then put into use.

[0025] A second circular snap-fit ​​groove 201 is provided above the extended shaft 2, and a circular snap-fit ​​block 202 is installed at the lower end of the extended shaft 2.

[0026] The circular snap-fit ​​block 202 drives the extension shaft 2 to be positioned and connected to the mounting shaft 1 through the first circular snap-fit ​​groove 101. The circular snap-fit ​​block 202 drives a set of extension shafts 2 to be positioned and connected to them through the second circular snap-fit ​​groove 201 on another set of extension shafts 2.

[0027] A pin sleeve 203 is inserted through the center of the circular snap-fit ​​block 202. A pin rod 204 is fitted inside the pin sleeve 203. The pin sleeve 203 is passed through the mounting shaft 1 and the circular snap-fit ​​block 202, and then the pin rod 204 is inserted into the pin sleeve 203 for reinforcement.

[0028] The retaining ring 301 is fitted onto the outside of the mounting shaft 1 or the extension shaft 2. Take out the appropriate size and number of blades 3, and the retaining ring 301 will move them to fit onto the outside of the extension shaft 2 and the mounting shaft 1.

[0029] Depending on the specific material properties and processing requirements, the length is first adjusted. The circular locking block 202 drives the extension shaft 2 to be positioned and connected to the mounting shaft 1 through the first circular locking groove 101. Then, the pin sleeve 203 is passed through the mounting shaft 1 and the circular locking block 202, and the pin rod 204 is inserted into the pin sleeve 203 for reinforcement. If the length is insufficient, one or more sets of extension shafts 2 can be taken, and then the circular locking block 202 drives one set of extension shafts 2 to be positioned and connected to it through the second circular locking groove 201 on another set of extension shafts 2. Next, during the positioning and connection process of the extension shaft 2 and the mounting shaft 1, take out the appropriate size and number of blades 3, and drive the fixing ring 301 to fit around the extension shaft 2 and the mounting shaft 1. Adjust the spacing of the blades 3 to the appropriate position. When the extension shaft 2 and the mounting shaft 1 are being reinforced, pick up the mounting bolt 302, pass it through the fixing ring 301 and through the mounting hole 102 to position and connect it to the mounting shaft 1 or the extension shaft 2. After adjustment and assembly, thread the machine along the thread groove 103 to the mounting shaft 1, and it can be used.

Claims

1. A stepped end mill for CNC machining of high-temperature alloys, comprising a mounting shaft (1); characterized in that: It also includes an extension shaft (2) and a blade (3); an extension shaft (2) is provided above the mounting shaft (1), and multiple sets of blades (3) for cutting high-temperature alloys are linearly sleeved on the outside of both the extension shaft (2) and the mounting shaft (1). Multiple sets of mounting holes (102) are linearly opened around the outside of both the mounting shaft (1) and the extension shaft (2). A fixing ring (301) is installed in the middle of the blade (3). Multiple sets of mounting bolts (302) are circumferentially inserted on both the upper and lower sides of the fixing ring (301). The mounting bolts (302) pass through the fixing ring (301) and are positioned and connected to the mounting shaft (1) or the extension shaft (2) through the mounting holes (102).

2. The stepped end mill for CNC machining of high-temperature alloys according to claim 1, characterized in that: A first circular snap-fit ​​groove (101) is provided above the mounting shaft (1).

3. The stepped end mill for CNC machining of high-temperature alloys according to claim 1, characterized in that: A threaded groove (103) is provided on the inner wall below the mounting shaft (1).

4. A stepped end mill for CNC machining of high-temperature alloys according to claim 1, characterized in that: A second circular snap-fit ​​groove (201) is provided above the extended shaft (2), and a circular snap-fit ​​block (202) is installed at the lower end of the extended shaft (2).

5. A stepped end mill for CNC machining of high-temperature alloys according to claim 4, characterized in that: The circular snap-fit ​​block (202) drives the extension shaft (2) to be positioned and connected to the mounting shaft (1) through the first circular snap-fit ​​groove (101). The circular snap-fit ​​block (202) drives a set of extension shafts (2) to be positioned and connected to them through the second circular snap-fit ​​groove (201) on another set of extension shafts (2).

6. A stepped end mill for CNC machining of high-temperature alloys according to claim 4, characterized in that: A pin sleeve (203) is provided in the middle of the circular snap-fit ​​block (202), and a pin rod (204) is sleeved inside the pin sleeve (203).

7. A stepped end mill for CNC machining of high-temperature alloys according to claim 1, characterized in that: The retaining ring (301) is fitted onto the outside of the mounting shaft (1) or the extension shaft (2).

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