A wear-resistant diamond-coated ball end mill

Abstract

This utility model discloses a wear-resistant diamond-coated ball end mill, including a milling cutter body and a mounting base fixedly installed to a machine tool spindle. The top of the mounting base has a connecting groove, and a rotating ring located above the connecting groove is rotatably connected to the middle of the mounting base. A guide groove is located in the middle of the mounting base, and a driving groove is located in the middle of the rotating ring. A lifting groove is located on the outer circumference of the rotating ring, and a lifting ring is fitted around the rotating ring. A lifting block is integrally formed on the inner wall of the lifting ring, and a fixing rod is fixedly installed at the bottom of the lifting ring. The lifting block is slidably connected to the inside of the lifting groove, and a compression spring is installed inside the lifting groove. The mounting base has a fixing slot located below the lifting ring. This allows for quick installation and removal of the milling cutter body, avoiding the time-consuming and laborious process of unscrewing multiple bolts when replacing the milling cutter body, thus improving efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ball end mill technology, specifically a wear-resistant diamond-coated ball end mill. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces. There are many types of milling cutters, such as ball end mills. Ball end mills have greater friction with the product during operation, resulting in a larger load during cutting and affecting the service life of the milling cutter. Therefore, diamond coating is currently applied to the surface of milling cutters to enhance their wear resistance and extend their service life.

[0003] However, most ball end mills are currently inconvenient to install and remove, and the process is quite cumbersome when the end mill wears out after prolonged use and needs to be replaced.

[0004] Therefore, we propose a wear-resistant diamond-coated ball end mill. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant diamond-coated ball end mill to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant diamond-coated ball end mill, comprising a cutter body and a mounting base fixedly installed with a machine tool spindle. The top of the mounting base has a connecting groove, and a rotating ring located above the connecting groove is rotatably connected to the middle of the mounting base. A guide groove is formed in the middle of the mounting base, a driving groove is formed in the middle of the rotating ring, a lifting groove is formed on the outer circumference of the rotating ring, a lifting ring is sleeved on the outside of the rotating ring, and a lifting block is integrally formed on the inner wall of the lifting ring. A fixed insert rod is fixedly installed at the bottom of the ring. The lifting block is slidably connected to the inside of the lifting slide groove. A downward pressure spring is provided inside the lifting slide groove. The mounting base has a fixed slot located below the lifting ring. A connecting round rod is slidably connected inside the drive slide groove. The lower part of the connecting round rod is connected to the sliding rod inside the guide slide groove. A connecting rod is integrally connected to the bottom of the connecting round rod. An insert block that penetrates into the connecting groove is integrally connected to the end of the connecting rod. An insert groove corresponding to the insert block is provided on the top of the outer peripheral surface of the milling cutter body.

[0007] Optionally, the milling cutter body includes a shank that is inserted into a connecting slot and a cutter head integrally formed with the bottom of the shank. The insertion slot is formed on the outer peripheral surface of the shank, and a positioning groove is formed on the outer peripheral surface of the shank between the insertion slots.

[0008] Optionally, the inner wall of the connecting groove is integrally connected with a positioning protrusion located between the plug blocks, and the positioning protrusion is slidably connected to the inside of the positioning groove.

[0009] Optionally, the extension line of the centerline of the drive slide groove is tangent to the inner ring surface of the rotating ring, and the extension line of the centerline of the guide slide groove intersects the axis of the mounting base.

[0010] Optionally, the outer peripheral surface of the lifting ring is flush with the outer peripheral surface of the mounting base, the bottom of the pressure spring is pressed against the top of the lifting block, and the top of the pressure spring is pressed against the top of the lifting slide.

[0011] Optionally, the lifting ring, rotating ring, mounting base, and connecting groove are arranged coaxially, and the width of the driving groove and the downward groove is the same as the diameter of the connecting rod.

[0012] Optionally, the connecting rod is a square right-angled rod, the wide end of the connecting rod is smaller than the width of the plug block, and the end of the plug block is provided with an arc surface with the same diameter as the connecting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This wear-resistant diamond-coated ball end mill features a connector block. When replacing the end mill body, lifting and rotating the lifting ring causes the rotating ring to rotate. As the rotating ring rotates, the connecting rod moves along the drive slide groove, which in turn moves the connecting rod along the guide slide groove. This causes the connector block to retract into the mounting base, loosening the connector block from the connector slot at the tool holder. After removing the end mill body, inserting the tool holder of the new end mill into the connecting slot and rotating it in the opposite direction causes the lifting ring and rotating ring to extend the connector block and engage with the connector slot. This allows for quick installation and removal of the end mill body, avoiding the time-consuming and laborious process of unscrewing multiple bolts during end mill body replacement, thus improving efficiency.

[0015] This wear-resistant diamond-coated ball end mill features a fixed slot. When replacing the end mill body, the lifting ring is raised, allowing the fixed rod to be pulled out of the slot, which in turn allows the lifting ring and rotating ring to rotate. After replacement, the lifting block and lifting ring are pushed down by the pressure spring, inserting the fixed rod into the fixed slot to prevent the high-speed rotating end mill body from falling off. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a wear-resistant diamond-coated ball end mill according to the present invention;

[0017] Figure 2 This is a schematic diagram of the mounting base for a wear-resistant diamond-coated ball end mill according to the present invention;

[0018] Figure 3 This is a schematic diagram of the connecting groove of a wear-resistant diamond-coated ball end mill according to the present invention;

[0019] Figure 4 This is a schematic diagram of the rotating ring structure of a wear-resistant diamond-coated ball end mill according to the present invention;

[0020] Figure 5 This is a schematic diagram of the cutter body of a wear-resistant diamond-coated ball end mill according to the present invention.

[0021] In the diagram: 1. Mounting base; 2. Milling cutter body; 3. Connecting groove; 4. Rotating ring; 5. Drive slide; 6. Lifting slide; 7. Lifting ring; 8. Lifting block; 9. Downward pressure spring; 10. Fixed insertion rod; 11. Fixed slot; 12. Connecting round rod; 13. Guide slide; 14. Connecting rod; 15. Insertion block; 16. Positioning protrusion; 17. Tool holder; 18. Insertion groove; 19. Positioning slide. 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] Please see Figures 1 to 5This utility model provides a wear-resistant diamond-coated ball end mill, including a milling cutter body 2 and a mounting base 1 fixedly installed with a machine tool spindle. The top of the mounting base 1 has a connecting groove 3. A rotating ring 4 located above the connecting groove 3 is rotatably connected to the middle of the mounting base 1. A guide groove 13 is provided in the middle of the mounting base 1. A drive groove 5 is provided in the middle of the rotating ring 4. A lifting groove 6 is provided on the outer circumference of the rotating ring 4. A lifting ring 7 is sleeved on the outside of the rotating ring 4. A lifting block 8 is integrally provided on the inner wall of the lifting ring 7. A fixing rod 10 is fixedly installed at the bottom of the lifting ring 7. The lifting block 8 is slidably connected to the inside of the lifting groove 6. A downward pressure spring 9 is provided inside the lifting groove 6. The mounting base 1 has a fixing slot 11 located below the lifting ring 7. When replacing the milling cutter body 2 by setting the fixed slot 11, the lifting ring 7 is lifted so that the fixed insertion rod 10 is pulled out of the slot, thereby allowing the lifting ring 7 and the rotating ring 4 to rotate. After the replacement is completed, under the action of the downward spring 9, the lifting block 8 and the lifting ring 7 are pushed down to insert the fixed long rod into the fixed slot 11 to prevent the high-speed rotating milling cutter body 2 from falling off. The drive slide 5 is slidably connected to the connecting round rod 12. The lower part of the connecting round rod 12 is connected to the sliding rod inside the guide slide 13. The bottom of the connecting round rod 12 is integrally connected to the connecting rod 14. The end of the connecting rod 14 is integrally connected to the insertion block 15 that penetrates into the connecting groove 3. The top of the outer peripheral surface of the milling cutter body 2 is provided with an insertion groove 18 corresponding to the insertion block 15.

[0024] The milling cutter body 2 includes a shank 17 that is inserted into a connecting slot and a cutter head integrally formed with the bottom of the shank 17. A insertion slot 18 is formed on the outer circumferential surface of the shank 17, and a positioning groove 19 located between the insertion slots 18 is formed on the outer circumferential surface of the shank 17. By setting the insertion block 15, when replacing the milling cutter body 2, the lifting ring 7 is lifted and rotated, causing the rotating ring 4 to rotate. As the rotating ring 4 rotates, the connecting rod 12 moves along the drive groove 5 and drives the connecting rod 14 to move along the guide groove 13, thereby causing the insertion block 15 to retract into the mounting base 1, loosening the insertion block 15 from the insertion slot 18 at the shank 17. After removing the milling cutter body 2, the shank 17 of the new milling cutter is inserted into the connecting groove 3, and the lifting ring 7 and rotating ring 4 are rotated in the opposite direction, causing the insertion block 15 to extend and engage with the insertion slot 18. This allows for quick installation and removal of the milling cutter body 2, avoiding the time-consuming and laborious process of unscrewing multiple bolts when replacing the milling cutter body 2, thus improving efficiency.

[0025] The inner wall of the connecting groove 3 is integrally connected with a positioning protrusion 16 located between the plug blocks 15, and the positioning protrusion 16 is slidably connected to the inside of the positioning slide groove 19.

[0026] The extension line of the centerline of the drive slide 5 is tangent to the inner ring surface of the rotating ring 4, and the extension line of the centerline of the guide slide 13 intersects the axis of the mounting base 1.

[0027] The outer circumferential surface of the lifting ring 7 is flush with the outer circumferential surface of the mounting base 1, the bottom of the pressing spring 9 is pressed against the top of the lifting block 8, and the top of the pressing spring 9 is pressed against the top of the lifting slide 6.

[0028] The lifting ring 7, rotating ring 4, mounting base 1, and connecting groove 3 are arranged coaxially, and the width of the driving slide 5 and the downward slide groove is the same as the diameter of the connecting round rod 12.

[0029] The connecting rod 14 is a square right-angle rod. The wide end of the connecting rod 14 is smaller than the width of the plug block 15. The end of the plug block 15 is provided with an arc surface with the same diameter as the connecting groove 3.

[0030] Working principle:

[0031] When replacing the milling cutter body 2, lift and rotate the lifting ring 7, causing the rotating ring 4 to rotate. As the rotating ring 4 rotates, the connecting rod 12 moves along the drive slide 5 and drives the connecting rod 14 to move along the guide slide 13, thereby causing the plug block 15 to retract into the mounting base 1, so that the plug block 15 and the plug slot 18 at the tool holder 17 are disengaged. After removing the milling cutter body 2, insert the tool holder 17 of the new milling cutter into the connecting slot 3 and rotate it in the opposite direction, lifting and rotating the ring 4, so that the plug block 15 extends out and engages with the plug slot 18. This allows for quick installation and removal of the milling cutter body 2. When replacing the milling cutter body 2, lift the lifting ring 7, causing the fixed plug rod 10 to be pulled out of the slot, thereby allowing the lifting ring 7 and the rotating ring 4 to rotate. After the replacement is completed, under the action of the downward pressure spring 9, push the lifting block 8 and the lifting ring 7 downward, insert the fixed long rod into the fixed slot 11, and prevent the high-speed rotating milling cutter body 2 from falling off.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant diamond-coated ball end mill, comprising a cutter body (2) and a mounting base (1) fixedly mounted to a machine tool spindle, characterized in that, The top of the mounting base (1) is provided with a connecting groove (3). A rotating ring (4) located above the connecting groove (3) is rotatably connected to the middle of the mounting base (1). A guide groove (13) is provided in the middle of the mounting base (1). A drive groove (5) is provided in the middle of the rotating ring (4). A lifting groove (6) is provided on the outer circumference of the rotating ring (4). A lifting ring (7) is sleeved on the outside of the rotating ring (4). A lifting block (8) is integrally provided on the inner wall of the lifting ring (7). A fixing rod (10) is fixedly installed at the bottom of the lifting ring (7). The lifting block (8) is slidably connected to the inside of the lifting groove (6). Next, a downward pressure spring (9) is provided inside the lifting slide (6), and a fixed slot (11) is provided in the mounting base (1) below the lifting ring (7). A connecting rod (12) is slidably connected inside the driving slide (5). The lower part of the connecting rod (12) is connected to the sliding rod inside the guide slide (13). A connecting rod (14) is integrally connected to the bottom of the connecting rod (12). A plug-in block (15) that penetrates into the connecting groove (3) is integrally connected to the end of the connecting rod (14). A plug-in groove (18) corresponding to the plug-in block (15) is provided on the top of the outer peripheral surface of the milling cutter body (2).

2. The wear-resistant diamond-coated ball end mill according to claim 1, characterized in that, The milling cutter body (2) includes a shank (17) that is inserted into a connecting slot and a cutter head integrally provided with the bottom of the shank (17). The insertion slot (18) is opened on the outer peripheral surface of the shank (17), and the outer peripheral surface of the shank (17) is provided with a positioning groove (19) located between the insertion slots (18).

3. The wear-resistant diamond-coated ball end mill according to claim 2, characterized in that, The inner wall of the connecting groove (3) is integrally connected with a positioning protrusion (16) located between the plug blocks (15), and the positioning protrusion (16) is slidably connected to the inside of the positioning slide groove (19).

4. The wear-resistant diamond-coated ball end mill according to claim 1, characterized in that, The extension line of the centerline of the drive slide (5) is tangent to the inner ring surface of the rotating ring (4), and the extension line of the centerline of the guide slide (13) intersects the axis of the mounting base (1).

5. The wear-resistant diamond-coated ball end mill according to claim 1, characterized in that, The outer circumferential surface of the lifting ring (7) is flush with the outer circumferential surface of the mounting base (1), the bottom of the pressing spring (9) is pressed against the top of the lifting block (8), and the top of the pressing spring (9) is pressed against the top of the lifting slide (6).

6. The wear-resistant diamond-coated ball end mill according to claim 1, characterized in that, The lifting ring (7), rotating ring (4), mounting base (1) and connecting groove (3) are arranged on the same axis, and the width of the driving groove (5) and the downward groove is the same as the diameter of the connecting round rod (12).

7. The wear-resistant diamond-coated ball end mill according to claim 1, characterized in that, The connecting rod (14) is a square right-angle rod. The wide end of the connecting rod (14) is smaller than the width of the plug block (15). The end of the plug block (15) is provided with an arc surface with the same diameter as the connecting groove (3).

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