Miniature-diameter forming single-blade ball cutter with replaceable cutter head

Abstract

The utility model discloses a small-diameter forming single-blade ball cutter with a replaceable cutter head, which comprises a cutter head mechanism and a cutter body mechanism, and is characterized in that the cutter head mechanism is detachably mounted at the front end of the cutter body mechanism and comprises a cutter head column, the rear end of the cutter head column is fixedly connected with a first inserting column, the first inserting column is coaxial with the cutter head column, and the outer diameter of the first inserting column is smaller than that of the cutter head column; the rear end of the outer side surface of the first inserting column is fixedly connected with a plurality of limiting clamping blocks, the rear end of the first inserting column is fixedly connected with a second inserting column which is coaxial with the first inserting column, and the outer diameter of the second inserting column is smaller than that of the first inserting column. According to the micro-diameter forming single-blade ball cutter with the replaceable cutter head, by arranging the limiting clamping block, the inserting groove, the limiting groove and the limiting strip, the cutter head part of the ball-end milling cutter can be independently replaced, so that after the cutter head structure of the ball-end milling cutter is damaged, the whole milling cutter does not need to be completely replaced, and only a new cutter head mechanism needs to be replaced; and waste can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of ball end mill technology, specifically a small-diameter forming single-edged ball end mill with replaceable cutting heads. Background Technology

[0002] A ball end mill is a cutting tool mounted on a milling machine with a ball-shaped cutting edge for milling various curved surfaces and circular grooves. Also called an R-cutter, ball end mills can mill mold steel, cast iron, carbon steel, alloy steel, tool steel, and general iron materials, and belong to the category of end mills. Ball end mills can operate normally in high-temperature environments.

[0003] In the manufacturing and processing of some high-precision micro-flare mouths, which require high accuracy, ball end mills with small size and high precision are usually used. Because of the small size of the cutter head, these end mills are generally integral structures. Once the cutter head is damaged, the whole thing needs to be replaced, which is quite wasteful. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a micro-diameter forming single-edged ball end mill with replaceable cutting heads. This solves the problem that in the manufacturing and processing of some high-precision micro-flared mouths with high accuracy requirements, small-sized and high-precision ball end mills are usually used. However, because these end mills have small cutting head sizes, they are generally integral structures, and once the cutting head is damaged, the entire end mill needs to be replaced, which is wasteful.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a micro-diameter forming single-edged ball cutter with replaceable cutting head, comprising a cutting head mechanism and a cutting body mechanism, characterized in that: the cutting head mechanism is detachably installed at the front end of the cutting body mechanism;

[0006] The cutter head mechanism includes a cutter head column, a first insertion post coaxial with the cutter head column and with an outer diameter smaller than the outer diameter of the cutter head column is fixedly connected to the rear end of the cutter head column, a plurality of limiting blocks are fixedly connected to the rear end of the outer surface of the first insertion post, a second insertion post coaxial with the first insertion post and with an outer diameter smaller than the outer diameter of the first insertion post is fixedly connected to the rear end of the first insertion post, and a milling cutter head is provided at the front end of the cutter head column.

[0007] Furthermore, the blade mechanism includes a blade post adapted to the outer diameter of the blade post. The front end of the blade post has a first insertion hole that is coaxial with it and adapted to the outer diameter and depth of the first insertion post. The inner surface of the first insertion hole has slots with the same depth as it and corresponding to the plurality of limiting blocks. The rear ends of the plurality of slots extend along the circumferential direction of the first insertion hole to form an L-shaped groove structure. The rear surface of the first insertion hole has a second insertion hole that is coaxial with it and adapted to the outer diameter and depth of the second insertion post.

[0008] Furthermore, the rear end surface of the cutter head column is provided with multiple limiting grooves arranged along its length.

[0009] Furthermore, the front end surface of the blade post is provided with a plurality of sliding grooves arranged along its length direction and corresponding to the plurality of limiting grooves respectively. The interior of each of the plurality of sliding grooves is slidably connected with a limiting strip along its length direction, and the outer surface of the plurality of limiting strips is fixedly connected with a sliding ring slidably connected to the outer surface of the blade post.

[0010] Furthermore, a fixing ring is fixedly connected to the rear part of the outer surface of the blade post, and a spring is fixedly connected between the fixing ring and the sliding ring and located outside the blade post along the length direction of the blade post. When the spring is not under force, the front end of the sliding ring extends to the front part of the front end of the blade post.

[0011] Furthermore, a protective sleeve extending forward to the outer surface of the slip ring is fixedly connected to the outer surface of the fixed ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This replaceable tip micro-diameter forming single-edged ball end mill, by setting a limiting block, slot, limiting groove and limiting strip, allows the ball end mill to replace the tip part separately. This means that when the tip structure is damaged, it is not necessary to replace the entire end mill, but only to replace the new tip mechanism. Moreover, the replacement of the tip mechanism is convenient and quick, which improves the efficiency of drilling and milling operations and avoids waste. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the combined state structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1-Cutter head post, 2-First insertion post, 3-Limiting block, 4-Second insertion post, 5-End milling cutter head, 6-Cutter body post, 7-Limiting groove, 8-Limiting strip, 9-Slip ring, 10-Fixing ring, 11-Spring, 12-Protective sleeve, 13-First insertion hole, 14-Slot, 15-Second insertion hole. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a micro-diameter forming single-edged ball cutter with replaceable cutter head, comprising a cutter head mechanism and a cutter body mechanism, characterized in that: the cutter head mechanism is detachably installed at the front end of the cutter body mechanism;

[0019] The cutter head mechanism includes a cutter head column (1), and a first insertion post (2) coaxial with the cutter head column (1) and with an outer diameter smaller than the outer diameter of the cutter head column (1) is fixedly connected to the rear end of the cutter head column (1). A plurality of limiting blocks (3) are fixedly connected to the rear end of the outer surface of the first insertion post (2). A second insertion post (4) coaxial with the first insertion post (2) and with an outer diameter smaller than the outer diameter of the first insertion post (2) is fixedly connected to the rear end of the first insertion post (2). A milling cutter head (5) is provided at the front end of the cutter head column (1).

[0020] The blade mechanism includes a blade post (6) that is adapted to the outer diameter of the blade post (1). The front end of the blade post (6) is provided with a first insertion hole (13) that is coaxial with it and adapted to the outer diameter and depth of the first insertion post (2). The inner surface of the first insertion hole (13) is provided with slots (14) that are the same depth as it and correspond to the plurality of limiting blocks (3). The rear ends of the plurality of slots (14) extend along the circumferential direction of the first insertion hole (13) to form an L-shaped groove structure. The rear surface of the first insertion hole (13) is provided with a second insertion hole (15) that is coaxial with it and adapted to the outer diameter and depth of the second insertion post (4).

[0021] When installing the cutter head mechanism, align the second insertion post 4 at its rear end with the second insertion hole 15 at the front end of the cutter body mechanism and insert it until multiple limit blocks 3 are pressed against the front surface of the cutter body post 6 of the cutter body mechanism. At this time, rotate the cutter head mechanism to rotate the multiple limit blocks 3 to the positions of multiple slots 14. Then, continue to push the cutter head mechanism backward. When resistance is felt again, it means that the multiple limit blocks 3 have all moved to the rear end of the first insertion hole 13. At this time, rotate the cutter head mechanism to drive the multiple limit blocks 3 to move synchronously. The multiple limit blocks 3 will slide into the bending grooves of multiple L-shaped slots respectively. Through this structure, the multiple limit blocks 3 can be limited, so that they cannot continue to move backward or forward, thereby synchronously limiting and fixing the cutter head mechanism. At this time, the cutter head mechanism can only rotate at a certain angle and cannot be pulled out from the cutter body mechanism.

[0022] The rear end surface of the cutter head column (1) is provided with multiple limiting grooves (7) arranged along its length direction.

[0023] The front end surface of the blade post (6) is provided with a plurality of sliding grooves arranged along its length direction and corresponding to a plurality of limiting grooves (7). The interior of each of the plurality of sliding grooves is slidably connected with a limiting strip (8) along its length direction. The outer surface of the plurality of limiting strips (8) is fixedly connected with a sliding ring (9) slidably connected to the outer surface of the blade post (6).

[0024] A fixing ring (10) is fixedly connected to the rear part of the outer surface of the blade post (6). A spring (11) is fixedly connected between the fixing ring (10) and the sliding ring (9) and located outside the blade post (6) along the length direction of the blade post (6). When the spring (11) is not under force, the front end of the sliding ring (9) extends to the front part of the front end of the blade post (6).

[0025] The multiple limiting grooves 7 on the cutter head column 1 and the multiple limiting strips 8 on the cutter body column 6 are respectively corresponding but staggered. During the process of inserting the cutter head mechanism into the cutter body mechanism, the rear end of the cutter head column 1 will push the slip ring 9 to move backward until the multiple limiting blocks 3 move to the innermost end of the slot 14. At this time, the cutter head mechanism is rotated, and the multiple limiting blocks 3 slide into the multiple bending grooves respectively. During the overall rotation of the cutter body mechanism, the multiple limiting grooves 7 gradually rotate to the position corresponding to the multiple limiting strips 8. At this time, under the action of the spring 11, the slip ring 9 is pushed forward, and the multiple limiting strips 8 are inserted into the interior of the multiple limiting grooves 7 respectively. Through this structure, the cutter head mechanism can be fixed so that it cannot rotate. With the cooperation of the limiting blocks 3 and the slot 14, the cutter head mechanism can be completely fixed.

[0026] When it is necessary to disassemble the cutter head mechanism, pull the slip ring 9 backward until the multiple limit bars 8 disengage from the multiple limit grooves 7, then rotate the cutter head mechanism in the opposite direction until resistance is felt, at which point the cutter head mechanism can be pulled outward.

[0027] A protective sleeve (12) extending forward to the outer surface of the slip ring (9) is fixedly connected to the outer surface of the fixed ring (10).

[0028] The protective sleeve 12 can completely cover the spring 11 and protect it.

[0029] When using this device, during the installation of the cutter head, the second insertion post 4 of the cutter head mechanism is pushed into the front end of the cutter body mechanism until resistance is felt. At this point, the cutter head mechanism is rotated until the multiple limit blocks 3 move to the corresponding slots 14. The cutter head mechanism is then pushed backward until resistance is felt again. At this point, the cutter head mechanism is rotated, and the multiple limit blocks 3 slide into the bending grooves at the rear end of the multiple slots 14. Under the action of the bending grooves, the limit blocks 3 are limited, preventing the cutter head mechanism from moving forward. Then, the cutter head mechanism is rotated again until the multiple limit strips 8 are aligned with the multiple limit grooves 7. Under the action of the spring 1, the limit strips 8 slide into the multiple limit grooves 7, thereby limiting the cutter head mechanism and preventing it from rotating. The double limiting structure can completely fix the cutter head mechanism, and the entire installation process is convenient and quick.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 replaceable head micro-diameter profiled single-point ball nose end mill comprising a head mechanism and a body mechanism, characterized in that: The tool head mechanism is detachably mounted at the front end of the tool body mechanism; The tool head mechanism comprises a tool head column (1), the rear end of the tool head column (1) is fixedly connected with a first plug-in column (2) coaxial with the tool head column (1) and having an outer diameter smaller than that of the tool head column (1), the rear end of the outer surface of the first plug-in column (2) is fixedly connected with a plurality of limiting blocks (3), the rear end of the first plug-in column (2) is fixedly connected with a second plug-in column (4) coaxial with the first plug-in column (2) and having an outer diameter smaller than that of the first plug-in column (2), and the front end of the tool head column (1) is provided with a milling tool head (5).

2. The micro-sized replaceable head ball nose single-point cutting tool according to claim 1, wherein: The tool body mechanism comprises a tool body column (6) matching the outer diameter of the tool head column (1), the front end of the tool body column (6) is provided with a first plug-in hole (13) coaxial with the tool body column (6) and matching the outer diameter and depth of the first plug-in column (2), the inner surface of the first plug-in hole (13) is provided with a plurality of insertion grooves (14) having the same depth as the first plug-in hole (13) and corresponding to the plurality of limiting blocks (3) respectively, the rear ends of the plurality of insertion grooves (14) extend along the circumferential direction of the first plug-in hole (13) to form an L-shaped slot structure, and the rear end surface of the first plug-in hole (13) is provided with a second plug-in hole (15) coaxial with the first plug-in hole (13) and matching the outer diameter and depth of the second plug-in column (4).

3. The interchangeable head micro diameter profiling single blade ball nose end mill according to claim 2, wherein: The rear end surface of the tool head column (1) is provided with a plurality of limiting grooves (7) arranged along the length direction thereof.

4. The interchangeable head micro diameter profiling single blade ball nose end mill according to claim 3, wherein: The front end surface of the tool body column (6) is provided with a plurality of sliding grooves arranged along the length direction thereof and corresponding to the plurality of limiting grooves (7) respectively, the interiors of the plurality of sliding grooves are slidingly connected with a plurality of limiting strips (8) respectively, and the outer surfaces of the plurality of limiting strips (8) are fixedly connected with a sliding ring (9) slidingly connected with the outer surface of the tool body column (6).

5. The interchangeable head micro diameter profiling single blade ball nose end mill according to claim 4, wherein: The rear part of the outer surface of the tool body column (6) is fixedly connected with a fixing ring (10), a spring (11) is fixedly connected between the fixing ring (10) and the sliding ring (9) and located outside the tool body column (6) along the length direction of the tool body column (6), and when the spring (11) is not stressed, the front end of the sliding ring (9) extends to the front part of the front end of the tool body column (6).

6. The interchangeable head micro diameter profiling single blade ball nose end mill according to claim 5, wherein: The outer surface of the fixing ring (10) is fixedly connected with a protective sleeve (12) extending forward to the outer surface of the sliding ring (9).

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