High-strength milling cutter

Abstract

The high-strength milling cutter comprises a main cutter handle, a cutter drill is arranged at the bottom of the main cutter handle, an arc-shaped key groove is formed in one side of the main cutter handle, a baffle is arranged in the middle of the top of the main cutter handle, and a sleeve is arranged on the peripheral side of the main cutter handle in a matched and sleeved mode. An arc-shaped key groove is formed in the inner side of the sleeve, an arc-shaped key block matched with the arc-shaped key groove is inserted into one side of the sleeve, the length of the arc-shaped key block is smaller than that of the arc-shaped key groove, two semicircular elastic blocks are embedded into the inner side of the sleeve, and the semicircular elastic blocks are located on the two sides of the baffle correspondingly. Meanwhile, the semicircular elastic block can bring certain elastic buffering to the baffle rotating in the axial direction, the milling cutter can enter a normal operation stage after buffering is completed, and by means of the design, the large abrasion rate of a common milling cutter in the operation process and the fracture phenomenon caused by intensified instantaneous resistance can be effectively reduced, and the service life of the milling cutter is prolonged. And the durability, the service life and the milling efficiency of the milling cutter are improved.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter technology, specifically a high-strength milling cutter. Background Technology

[0002] A milling cutter is a rotary cutting tool used for milling operations. It has one or more cutting teeth that sequentially and intermittently remove excess material from the workpiece during operation. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces.

[0003] In machining processes that require milling cutters, some high-specification, high-strength milling cutters experience relatively less wear during operation, but the corresponding cost will also increase significantly. Ordinary milling cutters, due to their limited strength, wear out faster during use, resulting in shorter durability and lifespan. Furthermore, during use, the increased resistance to rotation can sometimes cause the milling cutter to break, leading to not only material waste but also reduced milling efficiency. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] Therefore, the purpose of this utility model is to provide a high-strength milling cutter to solve the problems mentioned in the background art, such as the high wear rate, short durability and lifespan of ordinary milling cutters due to their limited strength; and the fact that the milling cutter sometimes breaks due to increased rotary resistance, which not only wastes materials but also reduces milling efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength milling cutter, comprising a main shank, a drill bit at the bottom of the main shank, an arc-shaped keyway on one side of the main shank, a baffle at the center of the top of the main shank, a sleeve fitted around the outer periphery of the main shank, an arc-shaped key block with a length less than the arc-shaped keyway inserted into one side of the sleeve, two semi-circular elastic blocks embedded inside the sleeve, the semi-circular elastic blocks being located on both sides of the baffle, and a connecting shank connected to the top of the sleeve.

[0007] In a preferred embodiment of the high-strength milling cutter described in this utility model, the main cutter shank, the sleeve, and the connecting cutter shank are coaxially mounted, and the main cutter shank and the connecting cutter shank have the same diameter.

[0008] As a preferred embodiment of the high-strength milling cutter described in this utility model, there is an movable gap between the ends of the arc-shaped keyway and the arc-shaped key block, and the semi-circular elastic block is fitted and abutted against both sides of the baffle.

[0009] As a preferred embodiment of the high-strength milling cutter described in this utility model, one side of the sleeve also has a keyway hole corresponding to the arc-shaped key block, a connecting block is fixed on the outside of the arc-shaped key block, and the connecting block and the side wall of the sleeve are fixedly connected by locking screws.

[0010] As a preferred embodiment of the high-strength milling cutter described in this utility model, the sleeve has a screw hole one that matches the locking screw on one side, and the connecting block has a screw hole two that matches the locking screw and corresponds to the screw hole one at the center.

[0011] As a preferred embodiment of the high-strength milling cutter described in this utility model, the inner side of the upper end of the sleeve has an internal thread, and the outer side of the lower end of the connecting tool holder has an external thread that matches the internal thread.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In the case of this high-strength end mill, during rapid rotation and milling operations, such as when resuming drilling after each pause, the sudden increase in rotary thrust and friction will bring greater resistance to the drill bit. During this process, the arc-shaped keyway and arc-shaped key block with avoidance movement interval will bring an instantaneous return stroke to the main shank and the drill bit. At the same time, the semi-circular elastic block will provide a certain elastic buffer for the axially rotating baffle. After the buffering is completed, the end mill will enter the normal working stage. This design can effectively reduce the high wear rate and breakage caused by the sudden increase in instantaneous resistance of ordinary end mills during operation, improve the durability, service life and milling efficiency of the end mill, and reduce the overall use cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model after installation;

[0014] Figure 2 This is a structural diagram of a portion of the present invention after disassembly.

[0015] Figure 3 This is a schematic diagram of the external structure of the main handle of this utility model;

[0016] Figure 4 This is a schematic diagram of the connection and mating structure between the sleeve and the main tool holder of this utility model.

[0017] In the diagram: 100, main tool holder; 1001, arc-shaped keyway; 110, tool drill; 120, baffle; 200, sleeve; 2001, keyway hole; 2002, screw hole one; 2003, internal thread; 300, arc-shaped key block; 310, connecting block; 3101, screw hole two; 320, locking screw; 400, semi-circular elastic block; 500, connecting tool holder; 5001, external thread. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] Figures 1-4 The diagram shown is a complete structural schematic of a high-strength milling cutter according to this utility model. Please refer to [link / reference]. Figures 1-4 This embodiment of a high-strength milling cutter includes a main shank 100, a drill bit 110 at the bottom of the main shank 100, an arc-shaped keyway 1001 on one side of the main shank 100, a baffle 120 at the center of the top of the main shank 100, a sleeve 200 fitted around the outer periphery of the main shank 100, an arc-shaped key block 300 that matches the arc-shaped keyway 1001 and has a length less than the arc-shaped keyway 1001 inserted into one side of the sleeve 200, two semi-circular elastic blocks 400 embedded inside the sleeve 200, and the semi-circular elastic blocks 400 are respectively located on both sides of the baffle 120, and a connecting shank 500 is also connected to the top of the sleeve 200.

[0022] The main tool holder 100, sleeve 200, and connecting tool holder 500 are coaxially mounted, and the main tool holder 100 and connecting tool holder 500 have the same diameter. There is a movable gap between the ends of the arc-shaped keyway 1001 and the arc-shaped key block 300, and the semi-circular elastic block 400 fits and abuts against both sides of the baffle 120. It should be noted that the semi-circular elastic block 400 in this embodiment can be made of rubber. Specifically, during use, when the milling cutter is rotating rapidly and milling, such as when it resumes drilling after each pause, the sudden increase in rotary thrust and friction will bring greater resistance to the drill bit 110. During this process, the arc-shaped keyway 1001 and arc-shaped key block 300 with the avoidance movement interval will bring an instantaneous return stroke to the main shank 100 and the drill bit 110. At the same time, the semi-circular elastic block 400 will provide a certain elastic buffer for the axially rotating baffle 120. After the buffering is completed, the milling cutter will enter the normal working stage. This design can effectively reduce the high wear rate and breakage caused by the sudden increase in instantaneous resistance of ordinary milling cutters during operation, improve the durability, service life and milling efficiency of the milling cutter, and reduce the overall use cost.

[0023] Furthermore, as a preferred embodiment, one side of the sleeve 200 also has a keyway hole 2001 corresponding to the arc-shaped key block 300. A connecting block 310 is fixed to the outer side of the arc-shaped key block 300, and the connecting block 310 and the side wall of the sleeve 200 are fixedly connected by a locking screw 320. One side of the sleeve 200 has a screw hole 2002 that matches the locking screw 320, and the connecting block 310 has a screw hole 3101 at its center that matches the locking screw 320 and corresponds to the screw hole 2002. It is understandable that, through the cooperation of the arc-shaped key block 300, the keyway hole 2001, and the arc-shaped keyway 1001, not only is the linear connection stability of the main tool holder 100 and the sleeve 200 guaranteed, but the main tool holder 100 and the sleeve 200 also have a certain amount of clearance travel in the axial direction. In addition, in order to prevent the arc-shaped key block 300 from slipping out of the arc-shaped keyway 1001 and the sleeve 200, the arc-shaped key block 300 is firmly fixed to the outside of the sleeve 200 through the cooperation of the screw hole 2002, the screw hole 3101, the connecting block 310, and the locking screw 320, which is simple and easy to operate.

[0024] Furthermore, preferably, the upper inner side of the sleeve 200 has an internal thread 2003, and the lower outer side of the connecting tool holder 500 has an external thread 5001 that matches the internal thread 2003. It is understood that the threaded fit facilitates installation and disassembly. It should be noted that during milling, the rapidly rotating connecting tool holder 500 and the sleeve 200 should have a tightened fit to prevent the structure from loosening during milling.

[0025] In summary, the high-strength end mill of this embodiment, during use, when the end mill is rotating rapidly and milling, such as when resuming drilling after each pause, the sudden increase in rotary thrust and friction will bring significant resistance to the drill bit 110. During this process, the arc-shaped keyway 1001 and arc-shaped key block 300 with avoidance movement interval will bring an instantaneous return stroke to the main shank 100 and the drill bit 110. At the same time, the semi-circular elastic block 400 will provide a certain elastic buffer for the axially rotating baffle 120. After the buffering is completed, the end mill will enter the normal working stage. This design can effectively reduce the high wear rate and fracture phenomenon caused by the instantaneous increase in resistance that exist in ordinary end mills during operation, and improve the durability, service life and milling efficiency of the end mill.

[0026] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-strength end mill, characterized in that, The device includes a main handle (100), a drill bit (110) at the bottom of the main handle (100), an arc-shaped keyway (1001) on one side of the main handle (100), a baffle (120) at the center of the top of the main handle (100), a sleeve (200) fitted around the outer periphery of the main handle (100), an arc-shaped key block (300) that matches the arc-shaped keyway (1001) and is shorter than the arc-shaped keyway (1001) is inserted into one side of the sleeve (200), two semi-circular elastic blocks (400) are embedded inside the sleeve (200), and the semi-circular elastic blocks (400) are located on both sides of the baffle (120), and a connecting handle (500) is connected to the top of the sleeve (200).

2. A high-strength end mill according to claim 1, characterized in that: The main handle (100), sleeve (200), and connecting handle (500) are coaxially mounted, and the main handle (100) and connecting handle (500) have the same diameter.

3. A high-strength end mill according to claim 1, characterized in that: There is a movable gap between the ends of the arc-shaped keyway (1001) and the arc-shaped key block (300), and the semi-circular elastic block (400) is fitted and abutted against both sides of the baffle (120).

4. A high-strength end mill according to claim 1, characterized in that: The sleeve (200) also has a keyway hole (2001) on one side corresponding to the arc-shaped key block (300). A connecting block (310) is fixed on the outside of the arc-shaped key block (300). The connecting block (310) and the side wall of the sleeve (200) are fixedly connected by a locking screw (320).

5. A high-strength end mill according to claim 4, characterized in that: The sleeve (200) has a screw hole one (2002) on one side that matches the locking screw (320), and the connecting block (310) has a screw hole two (3101) in the middle that matches the locking screw (320) and corresponds to the screw hole one (2002).

6. A high-strength end mill according to claim 1, characterized in that: The sleeve (200) has an internal thread (2003) on the inner side of its upper end, and the connecting handle (500) has an external thread (5001) on the outer side of its lower end that matches the internal thread (2003).

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