A milling cutter structure

Abstract

The utility model provides a kind of milling cutter structure, including milling cutter main body, connector, milling cutter mounting seat and multiple milling blades, the bottom end of milling cutter mounting seat is spaced apart and is provided with multiple blade mounting grooves along the circumferential direction, multiple milling blades are respectively corresponding fixedly installed in multiple blade mounting grooves, connector is detachably fixedly installed at the bottom end of milling cutter main body, milling cutter mounting seat is detachably fixedly installed at the bottom end of connector;Since multiple milling blades are installed in multiple blade mounting grooves on milling cutter mounting seat, the cutting work of workpiece is completed for multiple milling blades when cutting workpiece, so cutting force can be shared by multiple milling blades, and in cutting process, milling blade will leave cutting area in turn, so that each cutting edge bears smaller thermal shock, and heat dissipation is also better, which is beneficial to prolong the service life of milling blade;In addition, when a certain milling blade wears, it only needs to be disassembled and replaced, which is convenient to maintain and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically to a milling cutter structure. Background Technology

[0002] A milling cutter is a multi-bladed rotary cutting tool used for milling. Its core working principle is: by rotating the milling cutter at high speed, it cuts the workpiece fixed on the worktable to remove excess material from the workpiece, thereby obtaining the required shape, size and surface quality.

[0003] In the existing technology, the cutting edge of the milling cutter is integrally formed with the body of the milling cutter. When the cutting edge wears during the grinding and cutting process of the workpiece, the entire milling cutter needs to be replaced, which results in high maintenance costs. In addition, since the cutting edge is a single edge, the single edge is more prone to wear during long-term cutting, which is not conducive to the service life of the cutting edge. Summary of the Invention

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a milling cutter structure that can reduce maintenance costs and extend service life.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] This application provides a milling cutter structure, including a milling cutter body, a connector, a milling cutter mounting base, and a plurality of milling cutter inserts. The bottom end of the milling cutter mounting base is provided with a plurality of insert mounting slots spaced apart along the circumferential direction. The plurality of milling cutters are respectively fixedly installed in the plurality of insert mounting slots. The connector is detachably and fixedly installed at the bottom end of the milling cutter body, and the milling cutter mounting base is detachably and fixedly installed at the bottom end of the connector.

[0007] Furthermore, it also includes a locking screw. The bottom end of the milling cutter body is provided with a vertically downward extending connecting post. The connecting post has a threaded connecting hole. The center of the connector has a through hole that runs vertically through the center. The threaded connecting hole and the through hole have the same opening size. The connector is fitted onto the outer surface of the connecting post through the through hole. The locking screw passes through the through hole and is fixedly installed in the threaded connecting hole. The head of the locking screw is pressed and fitted against the outer surface of the through hole.

[0008] Furthermore, the outer edge of the connector is provided with a plurality of chip removal grooves evenly spaced along the circumferential direction, the bottom ends of the plurality of chip removal grooves are connected to the top ends of the plurality of blade mounting grooves, and the chip removal grooves penetrate through the upper and lower ends of the outer edge of the connector.

[0009] Furthermore, the chip removal groove is provided with a spray hole for coolant to flow out.

[0010] Furthermore, the bottom end face of the connector is provided with a plurality of first threaded holes evenly spaced along the circumferential direction, and the milling cutter mounting base is provided with a plurality of second threaded holes corresponding to the positions of the first threaded holes. The milling cutter mounting base and the connector are fixedly connected by locking screws installed in the second threaded holes and the first threaded holes.

[0011] Furthermore, the bottom end face of the connector is provided with a positioning post extending vertically downward in a hollow structure. The positioning post is coaxially arranged with the through hole, and the opening size of the positioning post is larger than that of the through hole. The center position of the milling cutter mounting base is provided with a vertically penetrating mounting hole. The milling cutter mounting base is fitted onto the outer circumferential surface of the positioning post through the mounting hole and fits against the bottom end face of the connector. The locking screw passes through the mounting hole and is installed in the threaded connection hole.

[0012] Compared with existing technologies, the beneficial technical effects of this solution are as follows: The milling cutter structure in this solution uses a milling cutter mounting base that is separately connected to the main body of the milling cutter. This separate structure facilitates the replacement of milling cutter mounting bases with different specifications of milling cutter inserts. Furthermore, since multiple milling cutters are installed in the multiple insert mounting slots on the milling cutter mounting base, the cutting force is distributed among multiple milling cutters during the cutting process. Additionally, as the multiple milling cutters leave the cutting zone sequentially during cutting, each cutting edge experiences less thermal shock and better heat dissipation, thus extending the service life of the milling cutters. Moreover, when a milling cutter wears out, only that milling cutter needs to be disassembled and replaced, making maintenance convenient and cost-effective. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the milling cutter structure in the embodiments of this application.

[0014] Figure 2 This is a top view of the milling cutter structure in the embodiments of this application.

[0015] Figure 3 for Figure 2 A schematic diagram of the AA-direction cross-section structure.

[0016] Figure 4 This is an exploded view of the installation and assembly of the milling cutter structure in the embodiments of this application.

[0017] Figure 5 This is a three-dimensional structural diagram of the connector in an embodiment of this application.

[0018] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point B in the diagram.

[0019] In the picture:

[0020] 100-milling cutter structure;

[0021] 10-End mill body; 11-Connecting post;

[0022] 20-Connector; 21-Through hole; 22-Chip removal groove; 23-Positioning pin; 24-Spray nozzle;

[0023] 30 - End mill mounting base; 31 - Mounting hole; 32 - Insert mounting slot;

[0024] 40 - Milling insert;

[0025] 50 - Locking screw;

[0026] 60 - Locking screw. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 4 As shown, this embodiment provides a milling cutter structure 100, including a milling cutter body 10, a connector 20, a milling cutter mounting base 30, and a plurality of milling cutter inserts 40. The milling cutter mounting base 30 is fixedly mounted on the milling cutter body 10 through the connector 20.

[0029] Reference Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the outer circumferential surface of the milling cutter mounting base 30 is provided with multiple insert mounting slots 32 spaced apart along the circumferential direction. Multiple milling cutters 40 are correspondingly and detachably fastened to the multiple insert mounting slots 32. Threaded holes are provided on one side of both the milling cutter 40 and the insert mounting slots 32. The milling cutters 40 are fixedly installed in the threaded holes on one side of the insert mounting slots 32 by screws. It can be understood that the installation angles of the multiple milling cutters 40 are consistent. The connector 20 is fixedly installed at the bottom end of the milling cutter body 10, and the milling cutter mounting base 30 is fixedly installed at the bottom end of the connector 20. In this embodiment, the milling cutter mounting base 30 is fixedly installed on the milling cutter body 10 via the connector 20 because, during use, the overall length of the milling cutter can be adjusted by replacing the connector 20 with one of different thicknesses, so as to better adapt to the working requirements in different environments.

[0030] In this embodiment, the milling cutter structure is connected separately to the milling cutter body 10 via a milling cutter mounting base 30. This separate structure facilitates the replacement of the milling cutter mounting base 30 with milling cutters of different specifications. Furthermore, since multiple milling cutters 40 are installed in the multiple insert mounting slots 32 on the milling cutter mounting base 30, during workpiece cutting, the cutting work is completed by multiple milling cutters 40. That is, the same cutting feed is evenly distributed among multiple milling cutters 40. Thinner cuts mean that the cutting force and heat borne by each milling cutter 40 are significantly reduced. Therefore, the cutting force can be distributed among multiple milling cutters 40. During the cutting process, the milling cutters 40 leave the cutting zone sequentially, resulting in less thermal shock to each cutting edge and better heat dissipation, which helps extend the service life of the milling cutter. In addition, when a milling cutter 40 becomes worn, it can be easily removed and replaced, making maintenance convenient and cost-effective.

[0031] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the bottom end of the milling cutter body 10 is provided with a vertically downward extending connecting post 11. A threaded connecting hole is provided on the connecting post 11, and a through hole 21 is provided at the center of the connector 20. The threaded connecting hole and the through hole 21 have the same opening size. When the connector 20 is installed on the milling cutter body 10, the connector 20 is fitted onto the outer surface of the connecting post 11 through the through hole 21, and the upper end face of the connector 20 is in contact with the bottom end face of the milling cutter body 10. Then, the locking screw 50 passes through the through hole 21 and is fixedly installed in the threaded connecting hole. Rotation causes the locking screw 50 to tighten, so that the head of the locking screw 50 is pressed tightly against the outer surface of the through hole 21. By using the engagement between the locking bolt and the threaded connection hole on the connecting post 11, the connector 20 can be easily fixed at the bottom of the milling cutter body 10. Furthermore, since the locking screw 50 is installed inside the threaded connection hole of the connecting post 11, the locking screw 50 is concealed, which improves the aesthetics of the entire milling cutter structure.

[0032] Reference Figure 5 As shown, in some embodiments, the outer edge of the connector 20 is provided with a plurality of chip removal grooves 22 evenly spaced along the circumferential direction. The bottom ends of the plurality of chip removal grooves 22 are connected to the top ends of the plurality of insert mounting grooves 32. The chip removal grooves 22 penetrate through the upper and lower ends of the outer edge of the connector 20. That is, the plurality of chip removal grooves 22 at the outer edge of the connector 20 are respectively connected to the plurality of insert mounting grooves 32 on the outer edge of the lower milling cutter body 10. In this way, when the milling cutter 40 performs milling on the workpiece, the waste chips generated can be discharged outward through the chip removal grooves 22, reducing the residue of waste chips on the surface of the workpiece.

[0033] Reference Figure 5and Figure 6 As shown, in some embodiments, a coolant spray hole 24 is provided in the chip removal groove 22. The spray hole 24 is connected to the external coolant and is used to discharge coolant to the outside, so that the coolant enters the milling cutter 40 below and cools the milling cutter 40. It can be understood that the coolant flowing out of the spray hole 24 flows slowly downward along the groove wall of the chip removal groove 22. That is, the flow of coolant will not affect the discharge of waste chips generated by milling. Moreover, the supply of coolant can be supplied according to the actual processing conditions, such as intermittent supply or continuous supply.

[0034] Reference Figure 1 and Figure 4 As shown, in some embodiments, the bottom end face of the connector 20 is provided with a plurality of first threaded holes evenly spaced along the circumferential direction, and the milling cutter mounting base 30 is provided with a plurality of second threaded holes corresponding to the positions of the first threaded holes. The milling cutter mounting base 30 and the connector 20 are fixedly connected by locking screws 60 installed in the second threaded holes and the first threaded holes.

[0035] Reference Figure 4 and Figure 5 As shown, the bottom end face of the connector 20 is provided with a vertically downward extending positioning post 23 with a hollow structure. The positioning post 23 is coaxially arranged with the through hole 21. The opening size of the positioning post 23 is larger than the opening size of the through hole 21. The center position of the milling cutter mounting base 30 is provided with a vertically through mounting hole 31. The milling cutter mounting base 30 is fitted onto the outer peripheral surface of the positioning post 23 through the mounting hole 31 and fits against the bottom end face of the connector 20. The locking screw 50 passes through the mounting hole 31 and is installed in the threaded connection hole. The positioning pin 23 provides guidance for the installation of the milling cutter mounting base 30 on the connector 20. When installing the milling cutter mounting base 30 on the connector 20, it is necessary to ensure that the mounting hole 31 on the milling cutter mounting base 30 mates with the positioning pin 23 on the connector 20. After the upper end face of the milling cutter mounting base 30 is in contact with the bottom end face of the connector 20, it indicates that the milling cutter mounting base 30 is properly installed on the connector 20. By screwing the locking screw 50 into the threaded connection hole, the fixed installation of the milling cutter mounting base 30 on the connector 20 can be completed. The installation is convenient and quick.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A milling cutter structure, characterized in that, The device includes a milling cutter body, a connector, a milling cutter mounting base, and multiple milling cutter inserts. The bottom end of the milling cutter mounting base is provided with multiple insert mounting slots spaced apart along the circumferential direction. The multiple milling cutters are respectively fixedly installed in the multiple insert mounting slots. The connector is detachably and fixedly installed at the bottom end of the milling cutter body, and the milling cutter mounting base is detachably and fixedly installed at the bottom end of the connector.

2. The milling cutter structure according to claim 1, characterized in that, It also includes a locking screw. The bottom end of the milling cutter body is provided with a vertically downward extending connecting post. The connecting post has a threaded connecting hole. The center of the connector has a through hole that runs vertically through the center. The threaded connecting hole and the through hole have the same opening size. The connector is fitted onto the outer surface of the connecting post through the through hole. The locking screw passes through the through hole and is fixedly installed in the threaded connecting hole. The head of the locking screw is pressed against the outer surface of the through hole.

3. The milling cutter structure according to claim 2, characterized in that, The outer edge of the connector is provided with a plurality of chip removal grooves evenly spaced along the circumferential direction. The bottom ends of the plurality of chip removal grooves are connected to the top ends of the plurality of blade mounting grooves. The chip removal grooves pass through the upper and lower ends of the outer edge of the connector.

4. A milling cutter structure according to claim 3, characterized in that, The chip removal groove is equipped with a coolant spray hole for coolant to flow out.

5. A milling cutter structure according to claim 4, characterized in that, The bottom end face of the connector has a number of first threaded holes evenly spaced along the circumference. The milling cutter mounting base has a number of second threaded holes corresponding to the positions of the first threaded holes. The milling cutter mounting base and the connector are fixedly connected by locking screws installed in the second threaded holes and the first threaded holes.

6. A milling cutter structure according to claim 5, characterized in that, The bottom end face of the connector is provided with a positioning post that extends vertically downward and has a hollow structure. The positioning post is coaxially arranged with the through hole. The opening size of the positioning post is larger than the opening size of the through hole. The center position of the milling cutter mounting seat is provided with a vertically penetrating mounting hole. The milling cutter mounting seat is fitted onto the outer circumferential surface of the positioning post through the mounting hole and fits against the bottom end face of the connector. The locking screw passes through the mounting hole and is installed in the threaded connection hole.

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