A composite arc end mill

Abstract

This utility model relates to the field of metalworking cutting tool technology and discloses a composite arc-shaped end mill, including a cylindrical tool holder body and a connecting part. The connecting part is fixedly connected to the bottom inner wall of the cylindrical tool holder body. An adjustment mechanism is provided on the cylindrical tool holder body, and an auxiliary mechanism is provided on the adjustment mechanism. The adjustment mechanism includes a T-slot, which is formed on the top inner wall of the cylindrical tool holder body. A T-shaped bracket is slidably connected to the top inner wall of the T-slot, and an arc-shaped end mill is fixedly connected to the front outer wall of the T-shaped bracket. A threaded groove is formed on the top inner wall of the cylindrical tool holder body. In this utility model, through the cooperative design of the adjustment mechanism and the auxiliary mechanism, the quick disassembly and replacement of a single arc-shaped end mill is realized. When an end mill wears out, it is only necessary to pull the adjustment plate to release the limit and rotate the abutment plate to separate the clamping structure without disassembling the entire tool system.

Description

Technical Field

[0001] This utility model relates to the field of metal processing cutting tool technology, and in particular to a composite arc milling cutter. Background Technology

[0002] The cutting edge of a compound arc milling cutter is usually composed of at least two arc segments with different radii. These arc segments can be a combination of convex and concave arcs, or they can be convex or concave arcs with different curvatures connected together, such as a combination of convex arc cutting edge one, convex arc cutting edge two, concave arc cutting edge one, and concave arc cutting edge two.

[0003] When using a compound arc milling cutter, the cutter rotates and contacts the workpiece. Multiple arc segments on the cutting edge sequentially cut the workpiece material. Due to the different shapes and curvatures of the arcs, the cutting force can be dispersed during the cutting process, making the cutting smoother. Compared with traditional milling cutters, the multi-segment arc structure of the compound arc milling cutter can distribute the cutting force to different arc segments, avoiding the concentration of cutting force on a certain point or a certain section of the cutting edge. This reduces the risk of tool wear and breakage, increases the tool's service life, and also helps to reduce vibration during cutting and improve the surface quality of the machined material.

[0004] The circular arc end mill has the following drawbacks: because the cutting edge is fixed to a cylindrical shank, it needs to be replaced when some of the cutting edges wear out, resulting in high maintenance costs. To address this issue, a composite circular arc end mill is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a composite arc-shaped end mill, which aims to improve the problem in the prior art where multiple cutting edges are uniformly fixed on a cylindrical tool holder, resulting in high maintenance costs due to the need for uniform replacement after some cutting edges wear down.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a composite arc-shaped milling cutter, comprising a cylindrical cutter holder body and a connecting member, wherein the connecting member is fixedly connected to the bottom inner wall of the cylindrical cutter holder body, an adjustment mechanism is provided on the cylindrical cutter holder body, and an auxiliary mechanism is provided on the adjustment mechanism, wherein the adjustment mechanism includes a T-slot, the T-slot is formed on the top inner wall of the cylindrical cutter holder body, a T-shaped bracket is slidably connected to the top inner wall of the T-slot, an arc-shaped milling cutter is fixedly connected to the front outer wall of the T-shaped bracket, a threaded groove is formed on the top inner wall of the cylindrical cutter holder body, a threaded cylinder is threadedly connected to the side inner wall of the threaded groove, a stop plate is fixedly connected to the top outer wall of the threaded cylinder, and a directional mark is formed on the top outer wall of the stop plate.

[0007] As a further description of the above technical solution: the auxiliary mechanism includes a slide groove, which is formed on the top inner wall of the abutment plate. An adjusting plate is slidably connected to the top inner wall of the slide groove. A limit post is fixedly connected to the left outer wall of the adjusting plate, and a compression spring is fixedly connected to the right outer wall of the adjusting plate. A limit hole is formed on the side inner wall of the threaded groove.

[0008] As a further description of the above technical solution: there are a number of T-slots, and the number of T-slots are formed in a ring on the top inner wall of the cylindrical tool holder body; there are a number of T-shaped brackets, and the number of T-shaped brackets are respectively engaged with the top inner wall of the T-slots.

[0009] As a further description of the above technical solution: a wear-resistant pad is fixedly connected to the bottom outer wall of the abutment, and the abutment contacts the top outer wall of the T-shaped frame.

[0010] As a further description of the above technical solution: a bright pad is fixedly connected to the top outer wall of the directional mark.

[0011] As a further description of the above technical solution: there are two adjustment plates, which are symmetrical to each other, and frosted pads are fixedly connected to the outer walls of the left and right sides of the adjustment plates.

[0012] As a further description of the above technical solution: the two ends of the compression spring are respectively fixedly connected to the outer side walls of the two adjusting plates, the limiting post penetrates the inner side wall of the limiting hole, and the limiting hole penetrates the inner side walls of the left and right sides of the cylindrical tool holder body.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the quick disassembly and replacement of a single arc milling cutter is achieved through the coordinated design of the adjustment mechanism and the auxiliary mechanism. When a milling cutter is worn, the limiting position can be released by pulling the adjustment plate and the clamping structure can be separated by rotating the stop plate. There is no need to disassemble the entire tool system, which significantly shortens the maintenance time and improves the processing efficiency.

[0015] 2. In this utility model, the sliding fit design of the T-slot and the T-frame, combined with the large-area pressing effect of the abutment, effectively prevents the lateral displacement and loosening of the arc milling cutter during the working process. At the same time, the locking structure of the limiting post and the limiting hole further enhances the locking effect by utilizing the centrifugal force when the cylindrical tool holder rotates, ensuring the stability and accuracy of the machining process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front view of a composite arc milling cutter proposed in this utility model;

[0017] Figure 2This is a schematic diagram showing the disassembled composite arc milling cutter proposed in this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of a composite arc milling cutter proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the auxiliary mechanism of a composite arc milling cutter proposed in this utility model.

[0020] Legend:

[0021] 1. Cylindrical tool holder body; 2. Connecting part; 3. Adjustment mechanism; 31. T-slot; 32. T-shaped bracket; 33. Arc milling cutter; 34. Threaded groove; 35. Threaded cylinder; 36. Backing plate; 37. Pointing mark; 4. Auxiliary mechanism; 41. Slide groove; 42. Adjustment plate; 43. Limiting post; 44. Compression spring; 45. Limiting hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3 This utility model provides an embodiment of a composite arc-shaped milling cutter, comprising a cylindrical cutter holder body 1 and a connecting member 2. The connecting member 2 is fixedly connected to the bottom inner wall of the cylindrical cutter holder body 1. An adjustment mechanism 3 is provided on the cylindrical cutter holder body 1, and an auxiliary mechanism 4 is provided on the adjustment mechanism 3. The adjustment mechanism 3 includes a T-slot 31, which is formed on the top inner wall of the cylindrical cutter holder body 1. A T-shaped bracket 32 ​​is slidably connected to the top inner wall of the T-slot 31. The T-shaped bracket 32 ​​and the T-shaped bracket 4 are connected to the T-shaped bracket 32. The groove 31 prevents the arc-shaped milling cutter 33 from lateral displacement during operation. The arc-shaped milling cutter 33 is fixedly connected to the front outer wall of the T-shaped frame 32. The top inner wall of the cylindrical tool holder body 1 is provided with a threaded groove 34. The inner side wall of the threaded groove 34 is threadedly connected with a threaded cylinder 35. The top outer wall of the threaded cylinder 35 is fixedly connected with a stop plate 36. The stop plate 36 increases the pressing area on the T-shaped frame 32 to ensure the stability of the fixation. The top outer wall of the stop plate 36 is provided with a pointing mark 37.

[0024] Reference Figures 2-4There are several T-slots 31, which are arranged in a ring on the top inner wall of the cylindrical tool holder body 1. Multiple T-slots 31 allow the installation of multiple arc-shaped end mills 33, realizing composite machining functions and improving machining efficiency. There are several T-frames 32, which are respectively snapped into the top inner wall of the T-slots 31. A wear-resistant pad is fixedly connected to the bottom outer wall of the abutment plate 36. The wear-resistant pad reduces frictional wear between the abutment plate 36 and the T-frame 32, extending service life. The abutment plate 36 contacts the top outer wall of the T-frame 32. A bright pad is fixedly connected to the top outer wall of the directional mark 37. The bright pad improves the visibility of the directional mark 37, making it easier to operate, especially in low-light working environments. The directional mark 37 indicates the rotation direction of the threaded cylinder 35, making it easy for operators to quickly identify the disassembly or installation direction.

[0025] Reference Figures 3-4 The auxiliary mechanism 4 includes a slide 41, which is formed on the top inner wall of the abutment plate 36. An adjusting plate 42 is slidably connected to the top inner wall of the slide 41. A limit post 43 is fixedly connected to the left outer wall of the adjusting plate 42, and a compression spring 44 is fixedly connected to the right outer wall of the adjusting plate 42. A limit hole 45 is formed on the side inner wall of the threaded groove 34. There are two adjusting plates 42, which are symmetrical to each other. A frosted pad is fixedly connected to the left and right outer walls of the adjusting plate 42. The frosted pad increases the friction between the fingers and the adjusting plate 42, making it easier to operate. The two ends of the compression spring 44 are fixedly connected to the side outer walls of the two adjusting plates 42. The limit post 43 passes through the side inner wall of the limit hole 45, and the limit hole 45 passes through the left and right inner walls of the cylindrical knife handle body 1.

[0026] Working principle: When the cylindrical cutter holder body 1 rotates, the limiting post 43 prevents the threaded cylinder 35 from rotating loosely. After long-term use, when the individual arc-shaped end mill 33 wears and is damaged, the limiting post 43 is moved by pulling the two adjusting plates 42. The limiting post 43 moves and separates from the limiting hole 45, releasing the rotation limit between the threaded cylinder 35 and the thread groove 34. Then, according to the rotation direction indication of the indicator mark 37, the threaded cylinder 35 rotates when the abutment plate 36 is rotated. The threaded cylinder 35 rotates and separates from the thread groove 34. Then, the abutment plate 36 is on the surface of the T-shaped bracket 32. Then, the T-shaped bracket 32 ​​is pulled out from the T-shaped groove 31 for easy disassembly and replacement of the individual arc-shaped end mill 33.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compound circular-arc milling cutter comprising a cylindrical shank main body (1), a butt joint (2), characterized in that: The docking part (2) is fixedly connected to the bottom inner wall of the cylindrical tool holder body (1). The cylindrical tool holder body (1) is provided with an adjustment mechanism (3), and the adjustment mechanism (3) is provided with an auxiliary mechanism (4). The adjustment mechanism (3) includes a T-slot (31), which is opened on the top inner wall of the cylindrical tool holder body (1). A T-frame (32) is slidably connected to the top inner wall of the T-slot (31). An arc-shaped milling cutter (33) is fixedly connected to the front outer wall of the T-frame (32). A threaded groove (34) is opened on the top inner wall of the cylindrical tool holder body (1). A threaded cylinder (35) is threadedly connected to the side inner wall of the threaded groove (34). A stop plate (36) is fixedly connected to the top outer wall of the threaded cylinder (35). A pointing mark (37) is opened on the top outer wall of the stop plate (36).

2. The compound circular-arc cutter according to claim 1, characterized in that: The auxiliary mechanism (4) includes a slide (41), which is opened on the top inner wall of the abutment plate (36). An adjusting plate (42) is slidably connected to the top inner wall of the slide (41). A limit post (43) is fixedly connected to the left outer wall of the adjusting plate (42), and a compression spring (44) is fixedly connected to the right outer wall of the adjusting plate (42). A limit hole (45) is opened on the side inner wall of the threaded groove (34).

3. The compound circular-arc cutter according to claim 1, wherein: There are several T-slots (31), and several T-slots (31) are circumferentially formed on the top inner wall of the cylindrical tool holder body (1). There are several T-frames (32), and several T-frames (32) are respectively engaged with the top inner wall of the T-slots (31).

4. The compound circular-arc cutter according to claim 1, wherein: The bottom outer wall of the abutment (36) is fixedly connected with a wear-resistant pad, and the abutment (36) contacts the top outer wall of the T-shaped frame (32).

5. The compound circular-arc cutter according to claim 1, wherein: A bright pad is fixedly attached to the top outer wall of the directional marker (37).

6. The compound circular-arc cutter according to claim 2, wherein: There are two adjustment plates (42), which are symmetrical to each other, and the outer walls of the left and right sides of the adjustment plates (42) are fixedly connected with frosted pads.

7. The compound circular-arc cutter according to claim 2, wherein: The two ends of the compression spring (44) are respectively fixedly connected to the outer side walls of the two adjusting plates (42), the limiting post (43) penetrates the inner side wall of the limiting hole (45), and the limiting hole (45) penetrates the inner side walls of the cylindrical tool holder body (1).

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