Anti-seismic milling cutter for rapid plunge milling cutting

Abstract

The invention relates to the technical field of milling cutters, in particular to an anti-seismic rapid plunge milling cutter which comprises a cutter body, a plurality of chip grooves distributed in an annular array are formed in the outer surface of the cutter body, cutter grooves are formed in the surfaces of the chip grooves, narrow sliding openings are formed in the surfaces of the cutter grooves, and wide sliding openings are connected to inner end openings of the narrow sliding openings. The inner side of the wide sliding opening is slidably connected with a sliding disc, the outer surface of the sliding disc extends to form a limiting block, a fan-shaped groove is formed in the inner top face of the wide sliding opening, the limiting block is slidably clamped into the inner side of the fan-shaped groove, the surface of the sliding disc is fixedly connected with a moving shaft, and the moving shaft slidably penetrates through the inner side of the narrow sliding opening. A tensioning mechanism is arranged between the upper surface of the moving shaft and the inner top face of the narrow sliding opening, the end of the moving shaft is fixedly connected with a connecting column, the outer surface of the connecting column is rotationally sleeved with a tool bit, the outer surface of the tool bit is provided with a polygonal face, and the upper surface of the polygonal face is attached to the inner top face of the tool groove. And the later-stage tool bit replacement operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of milling cutters, and in particular to a milling cutter capable of shock-resistant rapid plunging and milling. Background Art

[0002] The anti-vibration milling cutter is a milling cutter specially designed to reduce vibration during the cutting process. It adopts special design and material to improve processing accuracy and extend tool life. The anti-vibration milling cutter has a longer shank to facilitate effective reinforcement of a large area when the milling cutter is installed.

[0003] The shank of a milling cutter is the main supporting part of the milling cutter. It is usually made of a rod-shaped material and is used to fix the blade and transmit power. The end of the shank is usually chamfered to facilitate loading and unloading of the milling cutter. In addition, the diameter and length of the shank will also be selected according to the specific processing requirements and machine tool specifications. The cutter body of the milling cutter is the part that connects the shank and the cutter head. It carries the cutter head and transmits the cutting force. The cutter body is usually provided with a chip-dividing spiral groove to discharge the chips during the cutting process to prevent the chips from being too long and being rolled into the cutter head or cutting edge, which affects the cutting performance of the milling cutter. The cutter head of the milling cutter is the main cutting part of the milling cutter and is used for metal cutting. The cutter head is provided with a cutting edge. The shape and number of the cutting edge will be selected according to the specific processing requirements. Common cutting edge shapes include straight teeth, spiral teeth, etc. In addition, the cutter head can also be designed differently according to the processing requirements, such as flat bottom type, fishtail type, drill tip type, etc.

[0004] In the prior art, after a long period of milling, the cutter head needs to be replaced with the feed edge to ensure the milling effect of the cutter head. However, the cutter head in the prior art is fixed by bolts. When replacing, the bolts need to be completely unscrewed and then the cutter head needs to be changed. The whole process is quite inconvenient, especially for milling cutters with multiple cutter heads. The operation process is relatively complicated. Therefore, we propose a milling cutter with vibration-resistant and fast plunge milling. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a milling cutter with anti-vibration and fast plunge milling.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a milling cutter for shock-resistant and fast plunge milling cutting, comprising a cutter body, the outer surface of the cutter body is provided with a plurality of chip grooves arranged in a circular array, the surface of the chip groove is provided with a tool groove, the surface of the tool groove is provided with a narrow sliding mouth, the inner end of the narrow sliding mouth is connected with a wide sliding mouth, the inner side of the wide sliding mouth is slidably connected with a sliding disk, the outer surface of the sliding disk extends with a limiting block, the inner top surface of the wide sliding mouth is provided with a fan-shaped groove, the limiting block slides into the inner side of the fan-shaped groove, the surface of the sliding disk is fixedly connected with a moving shaft, the moving shaft slides through the inner side of the narrow sliding mouth, a tensioning mechanism is provided between the upper surface of the moving shaft and the inner top surface of the narrow sliding mouth, the end of the moving shaft is fixedly connected with a connecting column, the outer surface of the connecting column is rotatably sleeved with a cutter head, the outer surface of the cutter head is provided with a polygonal surface, and the upper surface of the polygonal surface is in contact with the inner top surface of the cutter groove.

[0007] Preferably, the tensioning mechanism includes a fixed cylinder fixedly embedded in the inner top surface of the narrow sliding mouth, a pull rod is slidably inserted into the lower end of the fixed cylinder, the upper end of the pull rod is fixedly connected to an anti-slip disk, the upper surface of the anti-slip disk is fixedly connected to a tension spring, the upper end of the tension spring is fixedly connected to the inner top surface of the fixed cylinder, the anti-slip disk is slidably matched with the inner side of the fixed cylinder, and the lower end of the pull rod is rotatably connected to the movable shaft.

[0008] Preferably, a collar is fixedly connected to the lower end of the pull rod, and a ring groove is provided on the outer surface of the movable shaft, and the collar is rotatably inserted into the inner side of the ring groove.

[0009] Preferably, a truncated cone hole is formed through the end face of the cutter head, a clamping sleeve is rotatably sleeved on the outer surface of the connecting column, the clamping sleeve is clamped into the inner side of the truncated cone hole, and an indicator mark is provided at the edge of the end face of the cutter head.

[0010] Preferably, the outer surface fixing sleeve of the connecting column is provided with a fixing ring, the threaded sleeve at the end of the outer surface of the connecting column is provided with a limiting ring, the end surface of the clamping sleeve is provided with a recessed groove, and the limiting ring slides into the inner side of the recessed groove.

[0011] Preferably, a plurality of shifting holes are provided on the outer surface of the limiting ring, and expansion holes are provided at the ends of the shifting holes.

[0012] Preferably, a handle is fixedly connected to the upper surface of the knife body, and a positioning portion is provided on the outer surface of the handle.

[0013] Preferably, a plum blossom groove is formed on the end surface of the connecting column, and the connecting column and the movable shaft are integrally formed.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When the cutting tool head needs to be replaced after using for a period of time, the connecting column is rotated to make the limit block rotate upward along the inner side of the fan-shaped groove. At this time, the connecting column will rotate relative to the clamping sleeve and the cutting tool head. After rotating upward, the connecting column is pressed down to make the pull rod move downward, pull the tension spring, and the movable shaft moves downward along the inner side of the narrow sliding mouth, and the sliding plate slides down along the inner side of the wide sliding mouth. When it reaches the bottom, the polygonal surface will be away from the inner top surface of the cutting groove. At this time, the cutting tool head can be rotated to quickly replace the cutting edge of the cutting tool head. After releasing the hand, under the tension of the tension spring, the pull rod will move up and reset, so that the cutting tool head is again attached to the inner top surface of the cutting groove. At this time, the connecting column is rotated to make the limit block rotate and reset along the inner side of the fan-shaped groove, and cooperate with the tension of the tension spring to achieve the effect of limiting the sliding of the movable shaft. Therefore, it has the function of quickly replacing the cutting edge of the cutting tool head, and the operation is convenient and fast.

[0015] 2. After the user fixes the connecting column with the help of a screwdriver, and then uses the rod tool to insert it into the toggle hole, the limiting ring can be rotated to disengage the limiting ring from the connecting column. After that, the clamping sleeve can be slid out of the surface of the connecting column to remove the cutter head, so as to facilitate the later replacement operation and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a milling cutter for anti-vibration rapid plunge milling cutting according to the present invention; Figure 2 It is a partial cross-sectional view of a cutter body of a milling cutter for anti-vibration rapid plunging and cutting according to the present invention; Figure 3 A milling cutter for anti-vibration rapid plunging cutting according to the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a cross-sectional view of a clamping sleeve of a milling cutter for anti-vibration rapid plunging and cutting according to the present invention; Figure 5 A milling cutter for anti-vibration rapid plunging cutting according to the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 It is a cross-sectional view of a wide sliding opening of a milling cutter for anti-vibration rapid plunging and cutting according to the present invention; Figure 7 It is a cross-sectional view of the fixed barrel of a milling cutter for anti-vibration rapid plunge milling cutting according to the present invention; Figure 8 The present invention is a schematic diagram of a milling cutter head after being disassembled for anti-vibration and rapid plunge milling.

[0017] 1. Cutter body; 2. Chip groove; 3. Cutter groove; 4. Narrow slide; 5. Wide slide; 6. Fan-shaped groove; 7. Moving shaft; 8. Sliding disk; 9. Limit block; 10. Connecting column; 11. Plum blossom groove; 12. Clamping sleeve; 13. Limiting ring; 15. Fixed ring; 16. Ring groove; 17. Sleeve ring; 18. Pull rod; 19. Anti-slip disk; 20. Fixed cylinder; 21. Tension spring; 22. Cutter head; 23. Cone hole; 24. Polygonal surface; 25. Indicator mark; 26. Hidden groove; 27. Toggle hole; 28. Expanding; 29. ​​Cutter handle; 30. Positioning part. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] like Figure 1-Figure 8 The milling cutter for anti-vibration fast plunge milling shown in the figure comprises a cutter body 1, the outer surface of the cutter body 1 is provided with a plurality of chip grooves 2 arranged in a circular array, the surface of the chip groove 2 is provided with a cutter groove 3, the surface of the cutter groove 3 is provided with a narrow slide 4, the inner end of the narrow slide 4 is connected with a wide slide 5, the inner side of the wide slide 5 is slidably connected with a sliding plate 8, the outer surface of the sliding plate 8 extends with a limiting block 9, the inner top surface of the wide slide 5 is provided with a fan-shaped groove 6, the limiting block 9 is slidably engaged with the inner side of the fan-shaped groove 6, and the sliding plate 8 The surface of the movable shaft 7 is fixedly connected, and the movable shaft 7 slides through the inner side of the narrow sliding opening 4. A tensioning mechanism is arranged between the upper surface of the movable shaft 7 and the inner top surface of the narrow sliding opening 4. When the movable shaft 7 moves down along the inner side of the narrow sliding opening 4, the sliding plate 8 slides down along the inner side of the wide sliding opening 5. The end of the movable shaft 7 is fixedly connected with a connecting column 10. The outer surface of the connecting column 10 is rotatably sleeved with a cutter head 22. The outer surface of the cutter head 22 is provided with a polygonal surface 24. The upper surface of the polygonal surface 24 is in contact with the inner top surface of the cutter groove 3. The chip groove 2 is a common design in milling cutters. When the milling cutter rotates, the chips formed by the cutting at the bottom of the cutter head 22 will move upward through the chip groove 2 to achieve the chip removal function, thereby preventing excessive chips from being processed at the workpiece surface and affecting the processing. It should be noted that the opening shape of the above-mentioned fan-shaped groove 6 must meet the following requirements: the limit block 9 can rotate at an angle of ninety degrees in the fan-shaped groove 6, and after the limit block 9 rotates ninety degrees, it can slide down along the inner side of the wide sliding opening 5.

[0020] like Figure 2 , Figure 3 , Figure 7As shown, the tensioning mechanism includes a fixed cylinder 20 fixedly embedded in the inner top surface of the narrow sliding opening 4, a pull rod 18 is slidably inserted into the lower end of the fixed cylinder 20, an anti-slip disk 19 is fixedly connected to the upper end of the pull rod 18, a tension spring 21 is fixedly connected to the upper surface of the anti-slip disk 19, the upper end of the tension spring 21 is fixedly connected to the inner top surface of the fixed cylinder 20, the anti-slip disk 19 is slidably matched with the inner side of the fixed cylinder 20, and the lower end of the pull rod 18 is rotatably connected to the moving shaft 7. The anti-slip disk 19 plays a limiting role, preventing the pull rod 18 from moving down excessively and detaching from the inner side of the fixed cylinder 20.

[0021] like Figure 7 As shown, the lower end of the pull rod 18 is fixedly connected with a collar 17, and the outer surface of the movable shaft 7 is provided with an annular groove 16, and the collar 17 is rotated and snapped into the inner side of the annular groove 16. The arrangement of the collar 17 allows the movable shaft 7 to rotate relative to the pull rod 18, and the pull rod 18 can slide down synchronously with the movable shaft 7.

[0022] like Figure 2 , Figure 3 As shown, a truncated cone hole 23 is formed through the end surface of the cutter head 22, which is a common design on the cutter head 22. A clamping sleeve 12 is rotatably sleeved on the outer surface of the connecting column 10, and the clamping sleeve 12 is clamped into the inner side of the truncated cone hole 23. An indicator mark 25 is provided at the edge of the end surface of the cutter head 22. The clamping sleeve 12 is bucket-shaped in shape, and can be pushed against the inner wall of the truncated cone hole 23, thereby ensuring the stable installation of the cutter head 22.

[0023] like Figure 4 , Figure 5 As shown, a fixing ring 15 is fixedly sleeved on the outer surface of the connecting column 10, a limiting ring 13 is threadedly sleeved at the end of the outer surface of the connecting column 10, and a hidden groove 26 is opened on the end surface of the clamping sleeve 12, and the limiting ring 13 is slidably clamped into the inner side of the hidden groove 26. The hidden groove 26 is used to provide space for the arrangement of the clamping sleeve 12, so that the end surface of the clamping sleeve 12 does not protrude from the end surface of the connecting column 10, thereby ensuring that the chip removal is not hindered.

[0024] The outer surface of the limiting ring 13 is provided with a plurality of shifting holes 27, and the end of the shifting hole 27 is provided with a flared opening 28. The design of the flared opening 28 facilitates the insertion of a rod-shaped tool into the inner side of the shifting hole 27, thereby rotating the limiting ring 13.

[0025] like Figure 1 , Figure 2 As shown, a handle 29 is fixedly connected to the upper surface of the knife body 1, and a positioning portion 30 is provided on the outer surface of the handle 29. The positioning portion 30 is a horizontal section, which facilitates the installation and fixation of the handle 29.

[0026] like Figure 4 As shown, the end surface of the connecting column 10 is provided with a hexalobular groove 11, and the connecting column 10 is integrally formed with the moving shaft 7. It is convenient to insert a tool such as a screwdriver and then rotate the connecting column 10.

[0027] When the cutter head 22 needs to be replaced after being used for a period of time, the connecting column 10 is rotated to make the limit block 9 rotate upward along the inner side of the fan-shaped groove 6. At this time, the connecting column 10 will rotate relative to the clamping sleeve 12 and the cutter head 22. After rotating upward, the connecting column 10 is pressed down to make the pull rod 18 move downward, pulling the tension spring 21, and the moving shaft 7 moves downward along the inner side of the narrow sliding mouth 4. The sliding plate 8 slides down along the inner side of the wide sliding mouth 5. When it reaches the bottom, the polygonal surface 24 will be away from the inner top surface of the knife groove 3. At this time , the cutter head 22 can be rotated and the feed edge of the cutter head 22 can be quickly replaced. After releasing the hand, under the pulling force of the tension spring 21, the pull rod 18 will move up and reset, so that the cutter head 22 is again in contact with the inner top surface of the knife groove 3. At this time, the connecting column 10 is rotated to make the limit block 9 rotate and reset along the inner side of the fan-shaped groove 6, and the tension of the tension spring 21 is used to limit the sliding of the movable shaft 7. Therefore, it has the function of quickly replacing the feed edge of the cutter head 22, and the operation is convenient and fast.

[0028] After the user fixes the connecting column 10 with the help of a screwdriver, and then uses the rod tool to insert it into the toggle hole 27, the limiting ring 13 can be rotated to disengage the limiting ring 13 from the connecting column 10. After that, the clamping sleeve 12 can be slid out of the surface of the connecting column 10, and the cutter head 22 can be removed to facilitate the subsequent replacement operation, which is convenient to use.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A milling cutter for anti-vibration rapid plunging cutting, comprising a cutter body (1), characterized in that: The outer surface of the tool body (1) is provided with a plurality of chip grooves (2) arranged in a circular array, the surface of the chip groove (2) is provided with a tool groove (3), the surface of the tool groove (3) is provided with a narrow sliding opening (4), the inner end of the narrow sliding opening (4) is connected with a wide sliding opening (5), the inner side of the wide sliding opening (5) is slidably connected with a sliding disk (8), the outer surface of the sliding disk (8) is extended with a limiting block (9), the inner top surface of the wide sliding opening (5) is provided with a fan-shaped groove (6), the limiting block (9) is slidably engaged with the fan-shaped groove (6) On the inner side, a moving shaft (7) is fixedly connected to the surface of the sliding disk (8), and the moving shaft (7) slides through the inner side of the narrow sliding opening (4). A tensioning mechanism is arranged between the upper surface of the moving shaft (7) and the inner top surface of the narrow sliding opening (4). The end of the moving shaft (7) is fixedly connected to a connecting column (10), and a cutter head (22) is rotatably sleeved on the outer surface of the connecting column (10). The outer surface of the cutter head (22) is provided with a polygonal surface (24), and the upper surface of the polygonal surface (24) is in contact with the inner top surface of the cutter groove (3).

2. The milling cutter for anti-vibration rapid plunging cutting according to claim 1, characterized in that: The tensioning mechanism comprises a fixed cylinder (20) fixedly embedded in the inner top surface of the narrow sliding opening (4), a pull rod (18) being slidably inserted into the lower end of the fixed cylinder (20), an anti-slip disk (19) being fixedly connected to the upper end of the pull rod (18), a tension spring (21) being fixedly connected to the upper surface of the anti-slip disk (19), the upper end of the tension spring (21) being fixedly connected to the inner top surface of the fixed cylinder (20), the anti-slip disk (19) being slidably matched with the inner side of the fixed cylinder (20), and the lower end of the pull rod (18) being rotationally connected to the movable shaft (7).

3. A milling cutter for anti-vibration rapid plunging cutting according to claim 2, characterized in that: The lower end of the pull rod (18) is fixedly connected to a collar (17), and an annular groove (16) is provided on the outer surface of the movable shaft (7). The collar (17) is rotatably engaged with the inner side of the annular groove (16).

4. The milling cutter for anti-vibration rapid plunging cutting according to claim 1, characterized in that: A truncated cone hole (23) is formed through the end surface of the cutter head (22); a clamping sleeve (12) is rotatably sleeved on the outer surface of the connecting column (10); the clamping sleeve (12) is clamped into the inner side of the truncated cone hole (23); and an indicator mark (25) is provided at the edge of the end surface of the cutter head (22).

5. The milling cutter for anti-vibration rapid plunging cutting according to claim 4, characterized in that: The outer surface of the connecting column (10) is fixedly sleeved with a fixing ring (15), the outer surface end of the connecting column (10) is threadedly sleeved with a limiting ring (13), the end surface of the clamping sleeve (12) is provided with a recessed groove (26), and the limiting ring (13) is slidably inserted into the inner side of the recessed groove (26).

6. A milling cutter for anti-vibration rapid plunging cutting according to claim 5, characterized in that: The outer surface of the limiting ring (13) is provided with a plurality of shifting holes (27), and the ends of the shifting holes (27) are provided with flared openings (28).

7. The milling cutter for anti-vibration rapid plunging cutting according to claim 1, characterized in that: A knife handle (29) is fixedly connected to the upper surface of the knife body (1), and a positioning portion (30) is provided on the outer surface of the knife handle (29).

8. The milling cutter for anti-vibration rapid plunging cutting according to claim 1, characterized in that: The end surface of the connecting column (10) is provided with a hexagram groove (11), and the connecting column (10) and the movable shaft (7) are integrally formed.

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