High-efficiency chip removal structure of asymmetric chip flute round nose tool

Abstract

The utility model belongs to the technical field of round nose tool, especially involves a high -efficient chip removal structure of asymmetric chip groove round nose tool, in view prior art problem of chip adsorption, present the following scheme, including the cutter bar, the bottom fixed mounting of cutter bar has the tool bit, and the outside of cutter bar is provided with cleaning mechanism, The cleaning mechanism includes the connecting sleeve, the connecting sleeve is equipped outside the cutter bar, and the outer wall of connecting sleeve is provided with the clamping groove, the utility model through connecting sleeve, clamping groove, ball bearing's form that ball and sleeve set snap ring constitute, can let fixed link through spring push sliding sleeve let mounting plate and bottom brush resist the workpiece, in the process of tool bit rotation, through vertical brush stable adhesion tool bit and clean, avoid tool bit and chip groove adsorption too many chips etc., difficult to separate influence the smoothness of chip removal, can play the effect of high -efficient chip removal, and cooperate the threaded connection of fastening ring to fixed link, according to the drilling of tool bit to sliding sleeve position limiting.

Description

Technical Field

[0001] This utility model relates to an asymmetric chip removal groove round nose cutter, specifically an efficient chip removal structure for an asymmetric chip removal groove round nose cutter, belonging to the field of round nose cutter technology. Background Technology

[0002] A ball nose end mill is a type of metalworking tool named for its circular or near-circular arc-shaped cutting edge. Also known as an R-end mill or ball end mill, this arc-shaped cutting edge is its primary working part. Compared to traditional pointed-angle tools, the arc-shaped cutting edge of a ball nose end mill provides a smoother contact between the cutting edge and the workpiece during cutting, reducing the concentration of cutting forces and minimizing the risk of tool wear and workpiece surface damage.

[0003] In the prior art, such as the round nose end mill disclosed in CN222344303U, the round nose end mill of this application uses a chip evacuation groove to assist the tool groove in chip removal, which ensures the smoothness of chip removal and improves chip removal efficiency. At the same time, since the depth of the chip evacuation groove is greater than the depth of the tool groove, the chip evacuation groove can accommodate and remove more chips, avoid chip accumulation at the cutting edge, and improve the milling quality and milling efficiency of the round nose end mill.

[0004] However, in implementing the relevant technology, the following problems were found in the design of the round nose end mill: In the prior art, the milling quality and efficiency can be improved by setting chip removal grooves and other components. However, in actual use, some chips will be adsorbed on the chip removal grooves and are difficult to remove, which will affect the chip removal effect and require manual cleaning, making it inconvenient to use. In view of this, an efficient chip removal structure for an asymmetric chip removal groove round nose end mill is provided to overcome the above defects. Utility Model Content

[0005] This invention addresses the problem that some debris adheres to the chip removal groove and is difficult to remove, thus affecting the chip removal effect and requiring manual cleaning, which makes the process inconvenient. It provides an efficient chip removal structure with an asymmetrical chip removal groove and a round nose blade.

[0006] This utility model achieves the above objectives through the following technical solution: a high-efficiency chip removal structure for an asymmetric chip removal groove round nose knife, including a knife bar, a knife head fixedly installed at the bottom end of the knife bar, and a cleaning mechanism provided on the outside of the knife bar;

[0007] The cleaning mechanism includes a connecting sleeve, which is sleeved on the outside of the blade bar. The outer wall of the connecting sleeve has a locking groove. A ball is slidably connected inside the locking groove, and a retaining ring is rotatably connected to the outside of the ball. A fixing rod is fixedly installed at the bottom end of the retaining ring, and a sliding sleeve is sleeved at the bottom end of the fixing rod. A vertical brush is embedded in the outer wall of the sliding sleeve.

[0008] As a further improvement of this utility model: an mounting plate is fixedly installed at the bottom end of the sliding sleeve, and a bottom brush is embedded at the bottom end of the mounting plate.

[0009] As a further embodiment of this utility model: a limiting ring is fixedly installed on the outer wall of one end of the fixing rod that passes through the sliding sleeve, and a spring is fixedly installed at the bottom end of the fixing rod; a fastening ring is slidably connected to the outer wall of the other end of the fixing rod located outside the sliding sleeve.

[0010] As a further improvement of this utility model: the fixing rod is threadedly connected to the fastening ring, and a sliding structure is formed between the fixing rod and the sliding sleeve.

[0011] As a further improvement of this utility model: a connecting ring is slidably connected to the lower part of the external connecting sleeve of the tool holder, and an abutting mechanism is provided on one side of the connecting ring.

[0012] As a further embodiment of this utility model: the abutting mechanism includes a sleeve ring, which is slidably connected to one side of the connecting ring outside the tool bar, and a groove is provided on the outside of the tool bar at the position corresponding to the connecting ring.

[0013] As a further improvement of this utility model: a slider is fixedly installed on the outer wall of the corresponding groove of the sleeve ring, and a positioning rod is fixedly installed on the top of the sleeve ring.

[0014] The beneficial effects of this utility model are as follows: by forming a ball bearing by connecting sleeve, engaging groove, ball and sleeve retaining ring, the fixed rod can push the sliding sleeve through the spring to make the mounting plate and bottom brush contact the workpiece. During the cutting head rotation process, the vertical brush is stably attached to the cutting head for cleaning, avoiding the cutting head and chip removal groove from absorbing too much debris, which is difficult to remove and affects the smoothness of chip removal. It can achieve the effect of efficient chip removal. In addition, the fastening ring is used for the threaded connection of the fixed rod to limit the sliding sleeve according to the drilling of the cutting head.

[0015] By adjusting the connecting ring, the slider of the sleeve ring slides along the groove, and the positioning rod is inserted into the sleeve retaining ring for limiting. This allows the vertical brush to remain stable and prevent it from rotating or shaking while the cutter head is milling the workpiece, thus enabling the cleaning of the cutter head. The brush can be adjusted according to the processing method of the cutter head to improve its applicability and flexibility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting sleeve structure of this utility model;

[0018] Figure 3This is a schematic diagram of the limiting ring structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the positioning rod structure of this utility model.

[0020] In the diagram: 1. Blade holder; 2. Blade head; 3. Cleaning mechanism; 301. Connecting sleeve; 302. Engaging groove; 303. Ball bearing; 304. Sleeve retaining ring; 305. Fixing rod; 306. Sliding sleeve; 307. Vertical brush; 308. Mounting plate; 309. Bottom brush; 4. Limiting ring; 5. Spring; 6. Fastening ring; 7. Connecting ring; 8. Abutment mechanism; 801. Sleeve retaining ring; 802. Slide groove; 803. Slider; 804. Positioning rod. Detailed Implementation

[0021] 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. Example 1

[0022] like Figures 1 to 4As shown, a high-efficiency chip removal structure for an asymmetric chip-removing grooved round nose cutter includes a cutter shank 1, a cutter head 2 fixedly mounted at the bottom end of the cutter shank 1, and a cleaning mechanism 3 disposed outside the cutter shank 1. The cleaning mechanism 3 includes a connecting sleeve 301, which is sleeved on the outside of the cutter shank 1. The outer wall of the connecting sleeve 301 has a locking groove 302, a ball bearing 303 is slidably connected inside the locking groove 302, and a retaining ring 304 is rotatably connected outside the ball bearing 303. A fixing rod 305 is fixedly mounted at the bottom end of the retaining ring 304, and a sliding sleeve 306 is sleeved at the bottom end of the fixing rod 305. A vertical brush 307 is embedded in the outer wall of the sliding sleeve 306, and a mounting plate 308 is fixedly mounted at the bottom end of the sliding sleeve 306. A bottom brush 309 is embedded in the bottom end of the mounting plate 308. A limit ring 4 is fixedly mounted on the outer wall of one end of the fixing rod 305 that passes through the sliding sleeve 306. A spring 5 is fixedly installed at the bottom of the fixed rod 305. A fastening ring 6 is slidably connected to the outer wall of the fixed rod 305 located outside the sliding sleeve 306. The fixed rod 305 and the fastening ring 6 are threadedly connected, and a sliding structure is formed between the fixed rod 305 and the sliding sleeve 306. By forming a ball bearing with the connecting sleeve 301, the engaging groove 302, the ball 303 and the sleeved retaining ring 304, the fixed rod 305 can push the sliding sleeve 306 through the spring 5 to make the mounting plate 308 and the bottom brush 309 abut against the workpiece. During the rotation of the cutter head 2, the vertical brush 307 stably adheres to the cutter head 2 for cleaning, avoiding the cutter head 2 and the chip removal groove from accumulating too much debris, which is difficult to remove and affects the smoothness of chip removal. This can achieve a high-efficiency chip removal effect. In conjunction with the fastening ring 6 for the threaded connection of the fixed rod 305, the sliding sleeve 306 is limited according to the drilling of the cutter head 2. Example 2

[0023] In addition to all the technical features in Embodiment 1, this embodiment also includes: a connecting ring 7 slidably connected to the lower part of the external connecting sleeve 301 of the tool holder 1; an abutting mechanism 8 is provided on one side of the connecting ring 7; the abutting mechanism 8 includes a sleeve ring 801, which is slidably connected to one side of the external connecting ring 7 of the tool holder 1; a groove 802 is provided on the outside of the tool holder 1 corresponding to the position of the connecting ring 7; a slider 803 is fixedly installed on the outer wall of the sleeve ring 801 corresponding to the groove 802; and a positioning rod 804 is fixedly installed on the top of the sleeve ring 801; by adjusting the connecting ring 7, the slider 803 of the sleeve ring 801 slides along the groove 802, and the positioning rod 804 is inserted into the sleeve retaining ring 304 for limiting, so that while the tool head 2 is milling the workpiece, the vertical brush 307 remains stable and avoids rotation or shaking, thereby cleaning the tool head 2; and the tool head 2 can be adjusted according to the processing method to improve applicability and flexibility.

[0024] Working principle: The tool holder 1 and the tool head 2 form a round nose cutter. The chip removal groove on the tool head 2 is asymmetrical; its position, width, and depth are not uniformly distributed on the circumference. Furthermore, the pitch of the chip removal groove gradually increases from the tool tip to the tool holder. This variable pitch increases the centrifugal force on the chips, further accelerating chip removal. Bolts secure the connecting sleeve 301 and the tool holder 1 for easy disassembly and maintenance. The connecting sleeve 301 rotates through a locking groove 302, engaging several balls 303. The balls 303 externally engage with a retaining ring 304, preventing the retaining ring 304 from rotating with the fixed rod 305 when the tool holder 1 rotates. During drilling, the fixed rod 305 passes through the sliding sleeve 306 and is elastically pushed by the spring 5. This causes the bottom brush 309 of the mounting plate 308 to press against the workpiece, preventing the retaining ring 304 from rotating. In conjunction with the vertical brush 307, the chips adsorbed by the cutter head 2 can be brushed away to avoid affecting the chip removal effect. At the same time, the limiting ring 4 prevents the fixing rod 305 from disengaging from the sliding sleeve 306. The outer wall of the fixing rod 305 is threadedly connected to the fastening ring 6, which can adjust the displacement distance of the sliding sleeve 306 along the fixing rod 305 according to the cutting distance of the cutter head 2 and limit it to prevent the fixing rod 305 from penetrating too much into the sliding sleeve 306 and affecting the drilling depth of the cutter head 2. When milling is performed, the position is adjusted by the threaded connection between the cutter bar 1 and the connecting ring 7, allowing the sleeve ring 801 to slide stably along the slide groove 802 via the slider 803, and the positioning rod 804 to be inserted into the corresponding hole of the sliding sleeve 306 for fixation. While cleaning the chip removal groove of the cutter head 2, the chips adsorbed by the cutter head 2 are not affected, and the engagement of the slide groove 802 and the slider 803 can improve the torque bearing capacity of the sleeve ring 801 on the sleeve retaining ring 304 via the positioning rod 804.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high efficiency chip removal structure of an asymmetric chip flute round nose tool comprising a tool bar (1), characterized in that: The bottom end of the cutter bar (1) is fixedly equipped with a cutter head (2), and a cleaning mechanism (3) is provided on the outside of the cutter bar (1). The cleaning mechanism (3) includes a connecting sleeve (301), which is sleeved on the outside of the knife bar (1). The outer wall of the connecting sleeve (301) is provided with a locking groove (302). A ball (303) is slidably connected inside the locking groove (302), and a retaining ring (304) is rotatably connected outside the ball (303). A fixing rod (305) is fixedly installed at the bottom end of the retaining ring (304), and a sliding sleeve (306) is sleeved at the bottom end of the fixing rod (305). A vertical brush (307) is embedded in the outer wall of the sliding sleeve (306).

2. The high efficiency chip removal structure of an asymmetric chip flute circular nose tool according to claim 1, characterized in that: The bottom end of the sliding sleeve (306) is fixedly mounted with an mounting plate (308), and the bottom end of the mounting plate (308) is fitted with a bottom brush (309).

3. The high efficiency chip removal structure of an asymmetric chip flute circular nose tool according to claim 1, characterized in that: A limiting ring (4) is fixedly installed on the outer wall of one end of the fixed rod (305) that passes through the sliding sleeve (306), and a spring (5) is fixedly installed at the bottom end of the fixed rod (305). A fastening ring (6) is slidably connected to the outer wall of the fixed rod (305) located outside the sliding sleeve (306).

4. The high efficiency chip removal structure of an asymmetric chip flute circular nose tool according to claim 3, characterized in that: The fixing rod (305) is threadedly connected to the fastening ring (6), and a sliding structure is formed between the fixing rod (305) and the sliding sleeve (306).

5. The high efficiency chip removal structure of an asymmetric chip flute circular nose tool according to claim 1, characterized in that: A connecting ring (7) is slidably connected below the outer connecting sleeve (301) of the tool holder (1), and an abutment mechanism (8) is provided on one side of the connecting ring (7).

6. The high efficiency chip removal structure of an asymmetric chip flute circular nose tool according to claim 5, characterized in that: The abutting mechanism (8) includes a sleeve ring (801), which is slidably connected to one side of the external connecting ring (7) of the knife bar (1), and a groove (802) is provided on the outside of the knife bar (1) corresponding to the position of the connecting ring (7).

7. The high efficiency chip removal structure of an asymmetric chip flute circular nose tool according to claim 6, characterized in that: The sleeve ring (801) is fixedly installed with a slider (803) on the outer wall of the corresponding slide groove (802), and a positioning rod (804) is fixedly installed at the top of the sleeve ring (801).

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