Automatic chip removal structure of a milling cutter

Abstract

The utility model is suitable for milling cutter chip removal technical field provides a kind of automatic chip removal structure of milling cutter, including milling cutter component, the outside of milling cutter component is equipped with chip removal component, the end of milling cutter component is provided with mounting sleeve, milling cutter component includes milling cutter body, the outside of milling cutter body is spirally provided with several chip removal grooves, the chip removal component includes motor chuck, one side of motor chuck is provided with three groups of clamping jaw, each group of clamping jaw is provided with cutter, the centre of motor chuck is penetrated by milling cutter body, and the end of milling cutter body away from motor chuck is penetrated and is set to mounting sleeve, to solve the problem that above-mentioned large size chip cannot be discharged, cutter is additionally cut on the basis of compressed air injection, large size chip is cut off by cutter, and then compressed air is injected by jet pipe, and the chip after cutting is cut off, and the two auxiliary cooperation can better clean and discharge chip.

Description

Technical Field

[0001] This utility model relates to the field of milling cutter chip removal technology, and more specifically, it relates to an automatic chip removal structure for milling cutters. Background Technology

[0002] A milling cutter is a rotary cutting tool used for milling operations. It has a variety of structures, usually consisting of a cutter body and a cutting edge. The cutting edge can be designed into different shapes according to the machining requirements. It is suitable for machining planes, grooves, shaped surfaces, and cutting off workpieces, and is widely used in mechanical manufacturing, mold making, aerospace and other fields. By working with equipment such as milling machines or machining centers, it achieves material cutting by relying on the rotation of the cutter and the relative movement of the workpiece. It is one of the indispensable tools in modern metal cutting operations.

[0003] Currently, in metal cutting, when cutting tools such as milling cutters apply cutting force to a workpiece, the workpiece material undergoes plastic deformation and shear slip under the action of the cutting edge and rake face of the tool, forming continuous or discontinuous deformation areas. As the tool continues to feed, the slip deformation accumulates, and the material is gradually peeled off from the workpiece body, eventually forming chips.

[0004] The chip removal of existing milling cutters mainly relies on their unique structural design and motion coordination during the cutting process. The milling cutter body is usually equipped with a spiral chip removal groove. When the tool rotates and cuts, the chips are drawn into the chip removal groove under the action of cutting force and centrifugal force. Then, compressed air is injected into the cutting area through the channel, which has a scouring effect on the chips and causes the chips to be discharged outward along the chip removal groove.

[0005] However, when the feed rate of the milling cutter is too large, the chip thickness will increase, the cutting force and deformation of the chip will increase, and large chips will easily be formed, which will then wrap around the tool. At this time, the wrapped chips cannot be discharged by compressed air jetting, which will affect the normal use of the milling cutter and thus affect the machining efficiency. An automatic chip removal structure for milling cutters is proposed to improve the existing problems. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic chip removal structure for milling cutters.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic chip removal structure for a milling cutter includes a milling cutter assembly, a chip removal component sleeved on the outer side of the milling cutter assembly, and a mounting sleeve provided at the end of the milling cutter assembly.

[0009] The milling cutter assembly includes a milling cutter body, and the outer side of the milling cutter body is provided with a plurality of chip removal grooves spirally arranged.

[0010] The chip removal assembly includes an electric chuck, and three sets of grippers are provided on one side of the electric chuck, with each set of grippers equipped with a cutter.

[0011] The present invention is further configured such that: the milling cutter body passes through the center of the electric chuck, and the end of the milling cutter body away from the electric chuck passes through the mounting sleeve.

[0012] The present invention is further configured such that: three sets of cutting blades are arranged around the milling cutter body, the cutting blades are arranged in a serrated shape, and the cutting blades are used to cut chips.

[0013] By adopting the above technical solution, the electric chuck is a device that clamps and releases workpieces through a motor drive. The electric chuck can control the opening and closing of three sets of jaws. Since each set of jaws is equipped with a cutter, the three sets of cutters are arranged around the milling cutter body in a serrated shape. This allows for the cutting of large-sized chips during the opening and closing of the jaws, achieving the purpose of the cutters cutting chips. After the large-sized chips are cut, they are easier to discharge. In addition, because the cutters are arranged in a serrated shape, when actually cutting large-sized chips, the intermittent cutting structure of the serrated blades can apply periodic shearing and bending stress to the large-sized chips, making the chips more likely to break into small fragments when flowing over the blades. Compared with traditional straight blades, the serrated arrangement can decompose continuous large chips into smaller fragments, avoiding the accumulation of large chips in the clean area and facilitating subsequent collection and processing.

[0014] The present invention is further configured such that: two sets of cylinders are symmetrically arranged at the middle position of the electric clamping plate and the mounting sleeve, and the output ends of the two sets of cylinders are respectively connected to the electric clamping plate.

[0015] By adopting the above technical solution, when the two sets of cylinders are started, the two sets of cylinders can drive the electric chuck to move horizontally along the outside of the milling cutter body. Then the jaws and the cutter follow the electric chuck to move, which can realize the cutting of large chips at different positions on the outside of the milling cutter body, increase the cutting range of the cutter, improve the cutting efficiency, and facilitate faster chip removal.

[0016] The present invention is further configured such that: a pipe clamp is provided on one side of the electric clamp, and a connecting block is provided between the pipe clamp and the electric clamp; one side of the connecting block is connected to the electric clamp, and the other side of the connecting block is connected to the pipe clamp.

[0017] The present invention is further configured such that: an air jet pipe is provided inside the pipe clamp, and the pipe clamp is used to hold the air jet pipe.

[0018] The present invention is further configured such that: one end of the jet pipe is provided with an exhaust valve, the exhaust valve being used to control the discharge of compressed gas.

[0019] By adopting the above technical solution, since the jet pipe is fixed by the pipe clamp, and since the pipe clamp is connected to the electric chuck through the connecting block, when the electric chuck moves, the pipe clamp and the jet pipe can move with the electric chuck. Therefore, after the cutter cuts large-sized chips, the jet pipe can promptly spray compressed air to process the cut chips, thereby improving the chip discharge efficiency.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] To address the issue of large chips failing to be discharged, a cutter is added to the compressed air jet system for auxiliary cutting. The cutter cuts large chips, and then compressed air is injected through the jet pipe to clean up the cut chips. The combined effect of these two methods allows for better chip removal. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an automatic chip removal structure for a milling cutter according to the present invention.

[0023] Figure 2 for Figure 1 The front view.

[0024] Figure 3 This is a schematic diagram of the chip removal component in this utility model.

[0025] Figure 4 for Figure 3 The front view.

[0026] Figure 5 for Figure 3 A magnified structural diagram of area A in the middle.

[0027] Explanation of reference numerals in the attached drawings: 1. Milling cutter assembly; 11. Milling cutter body; 12. Chip removal groove;

[0028] 2. Chip removal assembly; 21. Electric chuck; 22. Grippers; 23. Pipe clamp; 24. Air jet pipe; 25. Cylinder; 26. Cutting blade;

[0029] 3. Install the sleeve. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] Please see Figure 1-5 The present invention provides the following technical solution:

[0033] Example 1, see Figure 1 An automatic chip removal structure for a milling cutter includes a milling cutter assembly 1, a chip removal assembly 2 sleeved on the outside of the milling cutter assembly 1, and an installation sleeve 3 provided at the end of the milling cutter assembly 1.

[0034] In practical applications, when the feed rate of the milling cutter assembly 1 is too large, the chip thickness will increase, the cutting force and deformation of the chip will increase, and large chips will easily be formed, which will then wrap around the milling cutter assembly 1. At this time, the wrapped chips cannot be discharged by the compressed air jet method, which will affect the normal use of the milling cutter assembly 1 and thus affect the processing efficiency.

[0035] To solve the problem of large-sized chips not being discharged, a chip removal component 2 is installed to handle large-sized chips and improve chip discharge efficiency.

[0036] See Figure 1 and Figure 2 The milling cutter assembly 1 includes a milling cutter body 11. Several chip removal grooves 12 are spirally arranged on the outer side of the milling cutter body 11. When the cutter rotates, the spiral chip removal grooves 12 generate a "screw pushing" effect, and the chips are discharged along the grooves to the end of the cutter or the outside by using the guiding force of the helix angle.

[0037] See Figures 3-5 The chip removal assembly 2 includes an electric chuck 21. Three sets of jaws 22 are provided on one side of the electric chuck 21. The electric chuck 21 is a device for clamping and releasing the workpiece by being driven by an electric motor. That is, the electric chuck 21 can control the opening and closing of the three sets of jaws 22. Since each set of jaws 22 is provided with a cutter 26, the three sets of cutters 26 are arranged around the milling cutter body 11. The cutters 26 are arranged in a sawtooth shape, so that large-sized chips can be cut during the opening and closing of the jaws 22. The cutters 26 are used to cut chips, and large-sized chips are easier to remove after being cut.

[0038] In addition, since the cutter 26 is serrated, when actually cutting large chips, the intermittent cutting structure of the serrated blades can apply periodic shearing and bending stress to the large chips, making the chips more likely to break into small pieces when flowing through the blades. Compared with traditional straight blades, the serrated arrangement can decompose continuous large chips into smaller pieces, avoiding the accumulation of large chips in the clean area, and facilitating subsequent collection and processing.

[0039] See Figures 2-5 The end mill body 11 passes through the center of the electric chuck 21, and the end of the end mill body 11 away from the electric chuck 21 passes through the mounting sleeve 3.

[0040] The mounting sleeve 3 is used to install the chip removal assembly 2. More specifically, the mounting sleeve 3 is set on the milling machine bracket and fixed by bolts. In specific applications, the milling cutter body 11 is fixed by the clamping device on the milling machine. The milling cutter body 11 passes through the mounting sleeve 3 but does not contact the mounting sleeve 3. Therefore, in actual operation, the control center of the milling machine controls the milling cutter body 11 to perform cutting work. When the milling cutter body 11 is working, the milling cutter body 11 will not affect the chip removal assembly 2 or the mounting sleeve 3.

[0041] See Figures 2-5 Two sets of cylinders 25 are symmetrically arranged at the middle position between the electric chuck 21 and the mounting sleeve 3, and the output ends of the two sets of cylinders 25 are respectively connected to the electric chuck 21.

[0042] When the two sets of cylinders 25 are activated, the two sets of cylinders 25 can drive the electric chuck 21 to move horizontally along the outside of the milling cutter body 11. Then the jaws 22 and the cutter 26 follow the electric chuck 21 to move, which can realize the cutting of large chips at different positions on the outside of the milling cutter body 11 by the cutter 26, increase the cutting range of the cutter 26, improve the cutting efficiency, and facilitate faster chip discharge.

[0043] See Figures 2-5 A pipe clamp 23 is provided on one side of the electric clamp 21. A connecting block is provided between the pipe clamp 23 and the electric clamp 21. One side of the connecting block is connected to the electric clamp 21, and the other side of the connecting block is connected to the pipe clamp 23.

[0044] See Figures 2-5 The inside of the clamp 23 is provided with an air jet pipe 24, and the clamp 23 is used to hold the air jet pipe 24.

[0045] See Figures 2-5 An exhaust valve is provided at one end of the jet pipe 24, which is used to control the discharge of compressed gas.

[0046] An air supply device is connected to the exhaust valve. The air supply device is used to provide compressed air to the jet pipe 24, so as to facilitate the spraying of compressed air for chip removal.

[0047] In practical applications, when the feed rate of the milling cutter body 11 is too large, the chip thickness will increase, the cutting force and deformation of the chip will increase, and large chips will easily be formed, which will then wrap around the milling cutter body 11. At this time, the wrapped chips cannot be discharged by the compressed air jet method, which will affect the normal use of the milling cutter body 11 and thus affect the machining efficiency.

[0048] To address the issue of large chips not being discharged, a cutter 26 is added to the compressed air jet method for auxiliary cutting. The cutter 26 cuts off the large chips, and then compressed air is jetted through the jet pipe 24 to clean the cut chips. The combined effect of these two methods can better clean the chips.

[0049] Since the jet pipe 24 is fixed by the clamp 23, and the clamp 23 is connected to the electric chuck 21 through the connecting block, when the electric chuck 21 moves, the clamp 23 and the jet pipe 24 can move with the electric chuck 21. Therefore, after the cutter 26 cuts large chips, the jet pipe 24 can promptly spray compressed air to process the cut chips, thereby improving the chip discharge efficiency.

[0050] Specifically, when large chips are wrapped around the outside of the milling cutter body 11, the electric chuck 21 is activated. The electric chuck 21 drives the three sets of jaws 22 to tighten, and then the three sets of cutters 26 set on the three sets of jaws 22 tighten accordingly. During the tightening process of the three sets of cutters 26, the three sets of cutters 26 cut the large chips. After the large chips are cut off, the exhaust valve is opened, and compressed air is sprayed out from the jet pipe 24. The chips are discharged by the flushing of the compressed air, thus achieving the purpose of chip removal.

[0051] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. An automatic chip removal structure for a milling cutter, characterized in that: The milling cutter assembly (1) is provided with a chip removal assembly (2) on its outer side and a mounting sleeve (3) is provided at the end of the milling cutter assembly (1). The milling cutter assembly (1) includes a milling cutter body (11), and the outer side of the milling cutter body (11) is provided with a plurality of chip removal grooves (12). The chip removal assembly (2) includes an electric chuck (21), and three sets of grippers (22) are provided on one side of the electric chuck (21), and each set of grippers (22) is provided with a cutter (26).

2. The automatic chip removal structure for a milling cutter according to claim 1, characterized in that: The milling cutter body (11) passes through the center of the electric chuck (21), and the end of the milling cutter body (11) away from the electric chuck (21) passes through the mounting sleeve (3).

3. The automatic chip removal structure for a milling cutter according to claim 1, characterized in that: The three sets of cutting blades (26) are arranged around the milling cutter body (11). The cutting blades (26) are arranged in a serrated shape and are used to cut chips.

4. The automatic chip removal structure for a milling cutter according to claim 3, characterized in that: Two sets of cylinders (25) are symmetrically arranged at the middle position of the electric chuck (21) and the mounting sleeve (3), and the output ends of the two sets of cylinders (25) are respectively connected to the electric chuck (21).

5. The automatic chip removal structure for a milling cutter according to claim 4, characterized in that: A pipe clamp (23) is provided on one side of the electric clamp (21), and a connecting block is provided between the pipe clamp (23) and the electric clamp (21). One side of the connecting block is connected to the electric clamp (21), and the other side of the connecting block is connected to the pipe clamp (23).

6. The automatic chip removal structure for a milling cutter according to claim 5, characterized in that: The hose clamp (23) is provided with an air jet pipe (24) inside, and the hose clamp (23) is used to hold the air jet pipe (24).

7. The automatic chip removal structure for a milling cutter according to claim 6, characterized in that: An exhaust valve is provided at one end of the jet pipe (24), which is used to control the discharge of compressed gas.

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