A fixing device for preventing iron filings from blocking the clamping slide of an aluminum profile extrusion die milling process and a method of use

Abstract

The application discloses a fixing device for preventing iron filings from blocking a clamp slide way during milling of an aluminum profile extrusion die and a use method, comprising a three-jaw chuck and a plurality of groups of clamps distributed on the top of the three-jaw chuck, the surface of the three-jaw chuck is provided with a plurality of groups of anti-iron-filings structures, and the plurality of groups of anti-iron-filings structures are respectively arranged on the surface of the clamps; the extrusion die is fixed in the middle part of the three-jaw chuck and then subjected to milling, and the anti-iron-filings structures block the iron filings generated during the milling; through cooperation of the outer protective cover and the inner protective cover, the iron filings generated during the milling of the extrusion die are blocked, the problem that the iron filings generated during the milling of the extrusion die enter the inner part of the three-jaw chuck through the gap between the three-jaw chuck and the clamp and damage the inner part of the three-jaw chuck is avoided, and the use of the clamp is affected.

Description

Technical Field

[0001] This invention relates to the field of extrusion die manufacturing technology, specifically to a fixing device and method for preventing iron filings from clogging the slide rail of a clamp during the milling of aluminum profile extrusion dies. Background Technology

[0002] A die is a tool used under external force to shape a blank (solid or liquid) into a part with a specific shape and size. Extrusion dies are used in the hot extrusion production of aluminum profiles. Specifically, they are used to perform various extrusion shapes on metals at high temperatures, taking advantage of the material's good plasticity. When milling an extrusion die, the extrusion die needs to be placed in the middle of a three-jaw chuck first, and then the extrusion die is fixed by the clamps. After fixing, the milling process is carried out. During the milling of the extrusion die, a large amount of iron filings are generated. The iron filings will enter the interior of the three-jaw chuck through the gaps between the clamps, thereby damaging the three-jaw chuck. In view of this, we propose a fixing device and method for preventing iron filings from clogging the slide rail of a clamp during the milling of aluminum profile extrusion dies to solve the above problems. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a fixing device and method for preventing iron filings from clogging the slide of a clamp during milling of an aluminum profile extrusion die. Through the cooperation of the outer protective cover and the inner protective cover, the iron filings generated during the milling of the extrusion die are blocked, preventing the iron filings generated during the milling process from entering the interior of the three-jaw chuck through the gap between the three-jaw chuck and the clamp, thus avoiding damage to the interior of the three-jaw chuck and affecting the use of the clamp.

[0004] To solve the above technical problems, the present invention provides the following technical solution: a fixing device for preventing iron filings from clogging the slide of a clamp in the milling of aluminum profile extrusion die, comprising a three-jaw chuck and several sets of clamps distributed on the top of the three-jaw chuck, wherein several sets of anti-iron filing structures are provided on the surface of the three-jaw chuck, and the several sets of anti-iron filing structures are respectively covered on the surface of the clamps. The extrusion die is fixed in the middle of a three-jaw chuck by several sets of clamps and then milled. The anti-chip structure blocks the chips generated during milling.

[0005] The present invention also provides a technical solution in which the anti-shaving structure includes an outer protective cover, a fixing bolt, a sliding groove, an inner protective cover and a positioning bolt. The outer protective cover is located outside the clamp, the fixing bolt is connected between the three-jaw chuck and the outer protective cover, the sliding groove is opened on the inner side of the outer protective cover, the top of the inner protective cover is fitted into the sliding groove, and the positioning bolt is set on the top of the outer protective cover.

[0006] The present invention also provides a technical solution in which the top end of the positioning bolt is set as a hexagonal prism-shaped protrusion, and the hexagonal edges of the hexagonal prism-shaped protrusion are all rounded. The end of the positioning bolt is rotatably connected to an auxiliary ring, the diameter of which is the same as the diameter of the positioning bolt.

[0007] The present invention also provides a technical solution in which two sets of protective curtains are symmetrically arranged at the end of the outer protective cover, and both sets of protective curtains are set in an arc shape, with the end of the protective curtains lower than the bottom of the clip.

[0008] The present invention also provides a technical solution in which the end of the clip is provided with a cleaning structure, the cleaning structure including a groove, a rubber strip, a mounting plate, and a cleaning brush. The groove is opened on one side of the clip, the rubber strip is embedded in the inside of the groove, the mounting plate is disposed on the surface of the rubber strip, and the cleaning brush is located at the bottom of the mounting plate.

[0009] The present invention also provides a technical solution in which the surface of the clamp is provided with a lubrication structure. The lubrication structure includes an oil tank, a limiting rod, a limiting ring, a spring, a fixing plate, two sets of fixing rods, two sets of baffles, and a spring plate. The oil tank is located on the surface of the clamp, the limiting rod is located at the top of the oil tank, the limiting ring and the spring are both sleeved on the surface of the limiting rod, the two ends of the spring abut against the limiting ring and the oil tank respectively, the fixing plate is located at the end of the limiting rod, the two sets of fixing rods are symmetrically arranged at both ends of the fixing plate, the two sets of baffles are axially symmetrically arranged inside the oil tank, and the spring plate is connected to the bottom of the two sets of baffles.

[0010] The present invention also provides a technical solution in which two sets of limiting blocks are symmetrically arranged on the inner wall of the oil tank, and the bottom of the two sets of limiting blocks abuts against the top of the two sets of baffles respectively.

[0011] The present invention also provides a technical solution in which an auxiliary plate is provided at the top of the limiting rod. The auxiliary plate is cylindrical and has an arc groove at the top.

[0012] The present invention also provides a technical solution in which an inlet is provided at the top of the oil tank and a guide pipe is connected to the bottom of the oil tank, the guide pipe passing through the fixing plate.

[0013] The present invention also provides a technical solution: a fixing device and a method for preventing iron filings from clogging the slide rail of a clamp during milling of aluminum profile extrusion dies, the specific steps of which are as follows: A. Install a structure to prevent iron filings; A1. Loosen the positioning bolts to release the locking of the positioning bolts to the inner protective cover; A2, push the inner protective cover toward the outer protective cover until the inner protective cover slides to the bottom of the groove; A3, Place the outer protective cover and the inner protective cover on the surface of the clip; A4. Screw several sets of fixing bolts into the inside of the three-jaw chuck and the outer protective cover, and fix the outer protective cover to the surface of the three-jaw chuck using several sets of fixing bolts. A5, slide the inner protective cover toward the middle of the three-jaw chuck until one end of the inner protective cover abuts against the surface of the extrusion die; A6. Tighten the positioning bolts. The auxiliary ring moves downward under the push of the positioning bolts until it is in close contact with the inner protective cover. Under the pressure of the positioning bolts, the auxiliary ring limits the inner protective cover. Through the cooperation of the outer and inner protective covers, the iron chips generated by the extrusion die during milling are blocked. B, Clean up the iron filings; B1, Align the rubber strip with the groove; B2, push the rubber strip until it is fully embedded in the groove; B3, release the clamp from the extrusion die, the clamp moves to the outside of the three-jaw chuck, and the cleaning brush moves synchronously under the action of the clamp. During the movement, the cleaning brush cleans out the iron filings in the gap of the three-jaw chuck. C. Lubricate the three-jaw chuck; C1, lubricating oil is injected into the oil tank through the feed port at the top of the oil tank; C2, by pressing the limiting rod downwards with the auxiliary plate, the limiting rod moves downwards under pressure, the limiting ring moves synchronously and squeezes the spring, at the same time the combination of the fixed plate and the fixed rod moves downwards, the two sets of baffles rotate downwards under the push of the two sets of fixed rods, the spring plate contracts under the squeeze of the two sets of baffles, the lubricating oil in the oil tank flows out from the gap between the two sets of baffles and the oil tank, and drips into the three-jaw chuck through the guide tube to lubricate the three-jaw chuck; C3 releases the push on the limit rod, the spring returns to its shape and pushes the limit ring upward, the limit rod moves synchronously, the fixed plate and the fixed rod move upward under the pull of the limit rod, releasing the push on the two sets of baffles, the spring plate extends, causing the two sets of baffles to rotate to the initial state, the two sets of baffles and the oil tank form a sealed state, preventing excessive lubricating oil from flowing out.

[0014] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. By cooperating with the outer protective cover, fixing bolts, slide groove, inner protective cover, and positioning bolts, the outer and inner protective covers are placed on the surface of the clamp. The outer protective cover is fixed by fixing bolts. The inner protective cover is slid until one end of the inner protective cover abuts against the surface of the extrusion die. The positioning bolts are tightened. Under the pressure of the positioning bolts, the inner protective cover is limited. Through the cooperation of the outer and inner protective covers, the iron chips generated by the extrusion die during milling are blocked. This prevents the iron chips generated during milling from entering the interior of the three-jaw chuck through the gap between the three-jaw chuck and the clamp, which would damage the interior of the three-jaw chuck and affect the use of the clamp. 2. By cooperating with the groove, rubber strip, mounting plate and cleaning brush, align the rubber strip with the groove, push the rubber strip until it is completely embedded in the groove, release the clamp from fixing the extrusion mold, the clamp moves to the outside of the three-jaw chuck, and the cleaning brush moves synchronously under the action of the clamp. During the movement, the cleaning brush cleans the iron filings from the gap of the three-jaw chuck. 3. Through the cooperation of the oil tank, limit rod, limit ring, spring, fixing plate, fixing rod, baffle, and spring plate, lubricating oil is injected into the oil tank. The limit rod is pressed down by the auxiliary plate, and the limit rod moves downward under the pressure. The limit ring moves synchronously and squeezes the spring. At the same time, the combination of the fixing plate and the fixing rod moves downward. The two sets of baffles rotate downward under the push of the two sets of fixing rods. The spring plate contracts under the squeeze of the two sets of baffles. The lubricating oil in the oil tank flows out from the gap between the two sets of baffles and the oil tank, and drips into the three-jaw chuck through the guide tube to lubricate the three-jaw chuck. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram of the specific structure of the anti-shavings structure in this invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the anti-shaving structure in this invention; Figure 4 This is a schematic diagram of the back structure of the anti-shaving structure in this invention; Figure 5 This is a schematic diagram of the connection structure of the clip in this invention; Figure 6 This invention is for Figure 5 A schematic diagram of the side structure; Figure 7 This is a schematic diagram of the specific structure of the lubrication structure in this invention; Figure 8 This is a schematic diagram of the bottom structure of the lubrication structure in this invention.

[0016] Among them: 1. Three-jaw chuck; 2. Card holder; 3. Anti-shavings structure; 31. Outer protective cover; 32. Fixing bolts; 33. Slide groove; 34. Inner protective cover; 35. Positioning bolts; 4. Auxiliary ring; 5. Protective curtain; 6. Cleaning structure; 61. Groove; 62. Rubber strip; 63. Mounting plate; 64. Cleaning brush; 7. Lubrication structure; 71. Oil tank; 72. Limiting rod; 73. Limiting ring; 74. Spring; 75. Fixing plate; 76. Fixing rod; 77. Baffle; 78. Spring plate; 8. Limit block; 9. Auxiliary board 10. Guiding tube. Detailed Implementation

[0017] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified. Example

[0018] like Figure 1 - Figure 8 As shown in the figure, this embodiment proposes a fixing device for preventing iron filings from clogging the slide of a clamp during milling of an aluminum profile extrusion die. The device includes a three-jaw chuck 1 and several sets of clamps 2 distributed on the top of the three-jaw chuck 1. Several sets of anti-iron filing structures 3 are provided on the surface of the three-jaw chuck 1, and these structures cover the surfaces of the clamps 2. The extrusion die is fixed to the middle of the three-jaw chuck 1 by the clamps 2 and then milled. The anti-iron filing structures 3 block the iron filings generated during milling. The anti-iron filing structures 3 protect the area around the clamps 2, preventing iron filings generated during milling from entering the interior of the three-jaw chuck 1 through the gap between the three-jaw chuck 1 and the clamps 2, thus avoiding damage to the interior of the three-jaw chuck 1 and affecting the use of the clamps 2.

[0019] The anti-chip structure 3 includes an outer protective cover 31, fixing bolts 32, a sliding groove 33, an inner protective cover 34, and positioning bolts 35. The outer protective cover 31 is located outside the clamp 2. The fixing bolts 32 are connected between the three-jaw chuck 1 and the outer protective cover 31. The sliding groove 33 is opened inside the outer protective cover 31. The top of the inner protective cover 34 is fitted into the sliding groove 33. The positioning bolts 35 are set at the top of the outer protective cover 31. The top of the inner protective cover 34 and the sliding groove 33 are both T-shaped and mutually compatible, which limits the movement of the inner protective cover 34 and makes it more stable during the movement of the inner protective cover 34. The outer protective cover 31 and the inner protective cover 34 are placed on the surface of the clamp 2, and several sets of fixing bolts 32 are screwed into the three-jaw chuck 1 and the outer protective cover. Inside the outer protective cover 31, the outer protective cover 31 is fixed to the surface of the three-jaw chuck 1 by several sets of fixing bolts 32. The inner protective cover 34 slides towards the middle of the three-jaw chuck 1 until one end of the inner protective cover 34 abuts against the surface of the extrusion die. The positioning bolt 35 is tightened, and the auxiliary ring 4 moves downward under the push of the positioning bolt 35 until it is in close contact with the inner protective cover 34. Under the pressure of the positioning bolt 35, the auxiliary ring 4 plays a limiting role on the inner protective cover 34. Through the cooperation of the outer protective cover 31 and the inner protective cover 34, the iron chips generated by the extrusion die during milling are blocked, and the iron chips generated during the milling process are prevented from entering the interior of the three-jaw chuck 1 through the gap between the three-jaw chuck 1 and the clamp 2, which would cause damage to the interior of the three-jaw chuck 1.

[0020] The top of the positioning bolt 35 is set as a hexagonal prism-shaped protrusion, and all six edges of the hexagonal prism-shaped protrusion are rounded. The end of the positioning bolt 35 is rotatably connected to an auxiliary ring 4, the diameter of which is the same as that of the positioning bolt 35. Setting the top of the positioning bolt as a hexagonal prism makes it easier for the operator to operate the positioning bolt, avoiding the need to use an external handle when rotating the positioning bolt, thus increasing convenience. Rounding the hexagonal edges can protect the operator's hands and prevent the edges from scratching the operator.

[0021] Two sets of protective curtains 5 are symmetrically arranged at the end of the outer protective cover 31, and both sets of protective curtains 5 are arc-shaped. The end of the protective curtains 5 is lower than the bottom of the clamp 2. When the outer protective cover 31 is installed on the top of the three-jaw chuck 1, the two sets of protective curtains 5 cover the end of the outer protective cover 31, thereby avoiding the problem of iron chips entering the outer protective cover 31 from the end of the outer protective cover 31 during milling of the extrusion die. This further improves the barrier against iron chips. Setting the end of the outer protective cover 31 and the two sets of protective curtains 5 to be arc-shaped makes the two sets of protective curtains 5 fit the three-jaw chuck 1 and the outer protective cover 1 more closely, reducing the gap between the three and better preventing the entry of iron chips.

[0022] The end of the clamp 2 is provided with a cleaning structure 6, which includes a groove 61, a rubber strip 62, a mounting plate 63, and a cleaning brush 64. The groove 61 is formed on one side of the clamp 2, the rubber strip 62 is embedded in the groove 61, the mounting plate 63 is set on the surface of the rubber strip 62, and the cleaning brush 64 is located at the bottom of the mounting plate 63. The rubber strip 62 is aligned with the groove 61, and pushed until it is fully embedded in the groove 61. This releases the clamp 2 from fixing the extrusion die, and the clamp 2 moves outward toward the three-jaw chuck 1. 4. Moves synchronously under the drive of the clamp 2. During the movement, the cleaning brush 64 cleans out the iron filings in the gap of the three-jaw chuck 1. One side of the mounting plate 63 and the cleaning brush 64 are set in a V shape. When cleaning iron filings, the iron filings on both sides follow the shape of the cleaning brush 64 and gather in the middle of the cleaning brush 64, which can better clean the iron filings. The height of the opening of the groove 61 is less than the diameter of the groove 61. The shape of the rubber strip 62 is adapted to the shape of the groove 61. When the rubber strip 62 is embedded in the inside of the groove 61, the rubber strip 62 is installed more stably.

[0023] The surface of the clamp 2 is also provided with a lubrication structure 7, which includes an oil tank 71, a limiting rod 72, a limiting ring 73, a spring 74, a fixing plate 75, two sets of fixing rods 76, two sets of baffles 77, and a spring plate 78. The oil tank 71 is located on the surface of the clamp 2, the limiting rod 72 is located at the top of the oil tank 71, the limiting ring 73 and the spring 74 are both sleeved on the surface of the limiting rod 72, and the two ends of the spring 74 respectively abut against the limiting ring 73 and the oil tank 71. The fixing plate 75 is located at the end of the limiting rod 72, the two sets of fixing rods 76 are symmetrically arranged at both ends of the fixing plate 75, the two sets of baffles 77 are axially symmetrically arranged inside the oil tank 71, and the spring plate 78 is connected to the bottom of the two sets of baffles 77. Lubricating oil is injected into the oil tank 71, and the limiting rod 72 is pressed down by the auxiliary plate 9. The limiting rod 72 moves downward under the pressure, and the limiting ring 73 moves downward as well. The spring 74 is compressed as the fixed plate 75 and the fixed rod 76 move downwards. The two sets of baffles 77 rotate downwards under the push of the two sets of fixed rods 76. The spring plate 78 contracts under the compression of the two sets of baffles 77. The lubricating oil in the oil tank 71 flows out from the gap between the two sets of baffles 77 and the oil tank 71, and drips into the three-jaw chuck 1 through the guide tube 10 to lubricate the three-jaw chuck 1. After lubrication, the push on the limit rod 72 is released, the spring 74 returns to its shape and pushes the limit ring 73 to move upwards. The limit rod 72 moves synchronously, and the fixed plate 75 and the fixed rod 76 move upwards under the pull of the limit rod 72, releasing the push on the two sets of baffles 77. The spring plate 78 extends, causing the two sets of baffles 77 to rotate to the initial state. The two sets of baffles 77 and the oil tank 71 form a sealed state to prevent excessive lubricating oil from flowing out.

[0024] Two sets of limiting blocks 8 are symmetrically arranged on the inner wall of the oil tank 71. The bottom of the two sets of limiting blocks 8 abuts against the top of the two sets of baffles 77 respectively. When the two sets of baffles 77 are in a stationary state, the top of the two sets of baffles 77 is in close contact with the bottom of the two sets of limiting blocks 8 respectively. This limits the two sets of baffles 77 and keeps them in a horizontal state. Through the cooperation of the two sets of baffles 77, the oil tank 71 is sealed, thereby achieving the purpose of controlling the output of lubricating oil.

[0025] An auxiliary plate 9 is provided at the top of the limiting rod 72. The auxiliary plate 9 is cylindrical and has an arc groove at the top. The auxiliary plate 9 is adapted to the shape of the operator's hand. When the operator presses the limiting rod 72, the hand sinks into the arc groove, which allows the operator to better control the limiting rod 72 and avoids the problem of hand slippage when pressing the limiting rod 72.

[0026] The top of the oil tank 71 is provided with a feed port, and the bottom of the oil tank 71 is connected to a guide pipe 10, which passes through the fixed plate 75. The guide pipe 10 guides the lubricating oil flowing out of the oil tank 71, so that the lubricating oil drips into the interior of the three-jaw chuck 1 through the guide pipe 10, thus ensuring the lubrication of the three-jaw chuck 1.

[0027] A fixing device and its usage method for preventing iron filings from clogging the slide rail of a clamp during milling of aluminum profile extrusion dies are disclosed, with the specific steps as follows: A. Install anti-shaving structure 3; A1. Loosen the positioning bolt 35 to release the locking of the positioning bolt 35 to the inner protective cover 34; A2, push the inner protective cover 34 toward the outer protective cover 31 until the inner protective cover 34 slides to the bottom of the slide groove 33; A3, place the outer protective cover 31 and the inner protective cover 34 on the surface of the clip 2; A4, screw several sets of fixing bolts 32 into the interior of the three-jaw chuck 1 and the outer protective cover 31, and fix the outer protective cover 31 to the surface of the three-jaw chuck 1 by several sets of fixing bolts 32; A5, slide the inner protective cover 34 toward the middle of the three-jaw chuck 1 until one end of the inner protective cover 34 abuts against the surface of the extrusion die; A6. Tighten the positioning bolt 35. The auxiliary ring 4 moves downward under the push of the positioning bolt 35 until it is in close contact with the inner protective cover 34. Under the pressure of the positioning bolt 35, the auxiliary ring 4 plays a limiting role on the inner protective cover 34. Through the cooperation of the outer protective cover 31 and the inner protective cover 34, the iron chips generated by the extrusion die during milling are blocked. B, Clean up the iron filings; B1, Align the rubber strip 62 with the groove 61; B2, push the rubber strip 62 until the rubber strip 62 is fully embedded in the groove 61; B3, release the clamp 2 from fixing the extrusion mold, the clamp 2 moves to the outside of the three-jaw chuck 1, the cleaning brush 64 moves synchronously under the drive of the clamp 2, and the cleaning brush 64 cleans out the iron filings in the gap of the three-jaw chuck 1 during the movement. C. Lubricate the three-jaw chuck 1; C1, lubricating oil is injected into the oil tank 71 through the feed port at the top of the oil tank 71; C2, the limiting rod 72 is pressed down by the auxiliary plate 9. Under the pressure, the limiting rod 72 moves down, the limiting ring 73 moves synchronously and squeezes the spring 74. At the same time, the combination of the fixing plate 75 and the fixing rod 76 moves down. The two sets of baffles 77 rotate downward under the push of the two sets of fixing rods 76. The spring plate 78 contracts under the squeeze of the two sets of baffles 77. The lubricating oil in the oil tank 71 flows out from the gap between the two sets of baffles 77 and the oil tank 71, and drips into the three-jaw chuck 1 through the guide tube 10 to lubricate the three-jaw chuck 1. C3, release the push on the limit rod 72, the spring 74 returns to its shape and pushes the limit ring 73 to move upward, the limit rod 72 moves synchronously, the fixed plate 75 and the fixed rod 76 move upward under the pull of the limit rod 72, release the push on the two sets of baffles 77, the spring plate 78 extends, causing the two sets of baffles 77 to rotate to the initial state, the two sets of baffles 77 and the oil tank 71 form a sealed state to prevent excessive lubricating oil from flowing out.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The foregoing has shown and described 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 foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for preventing iron filings from clogging the slide rail of a clamp during milling of aluminum profile extrusion dies, comprising a three-jaw chuck (1) and a plurality of clamps (2) distributed on the top of the three-jaw chuck (1), characterized in that: The surface of the three-jaw chuck (1) is provided with several sets of anti-shaving structures (3), and the several sets of anti-shaving structures (3) are respectively covered on the surface of the clamp (2); The extrusion die is fixed in the middle of the three-jaw chuck (1) by several sets of clamps (2) and then milled. The anti-chip structure (3) blocks the chips generated during milling. The anti-shavings structure (3) includes an outer protective cover (31), a fixing bolt (32), a sliding groove (33), an inner protective cover (34), and a positioning bolt (35). The outer protective cover (31) is located outside the clamp (2). The fixing bolt (32) is connected between the three-jaw chuck (1) and the outer protective cover (31). The sliding groove (33) is opened on the inner side of the outer protective cover (31). The top of the inner protective cover (34) is fitted inside the sliding groove (33). The positioning bolt (35) is set on the top of the outer protective cover (31). An auxiliary ring (4) is rotatably connected to the end of the positioning bolt (35), and the diameter of the auxiliary ring (4) is the same as the diameter of the positioning bolt (35). The outer protective cover (31) is symmetrically provided with two sets of protective curtains (5) at its end, and both sets of protective curtains (5) are set in an arc shape, with the end of the protective curtain (5) lower than the bottom of the clip (2); The end of the clip (2) is provided with a cleaning structure (6). The cleaning structure (6) includes a groove (61), a rubber strip (62), a mounting plate (63), and a cleaning brush (64). The groove (61) is opened on one side of the clip (2). The rubber strip (62) is embedded in the inside of the groove (61). The mounting plate (63) is set on the surface of the rubber strip (62). The cleaning brush (64) is located at the bottom of the mounting plate (63). The surface of the clamp (2) is also provided with a lubrication structure (7). The lubrication structure (7) includes an oil tank (71), a limiting rod (72), a limiting ring (73), a spring (74), a fixing plate (75), two sets of fixing rods (76), two sets of baffles (77), and a spring plate (78). The oil tank (71) is located on the surface of the clamp (2). The limiting rod (72) is located at the top of the oil tank (71). The limiting ring (73) and the spring (74) are both sleeved on the surface of the limiting rod (72). The two ends of the spring (74) abut against the limiting ring (73) and the oil tank (71) respectively. The fixing plate (75) is located at the end of the limiting rod (72). The two sets of fixing rods (76) are symmetrically arranged at both ends of the fixing plate (75). The two sets of baffles (77) are axially symmetrically arranged inside the oil tank (71). The spring plate (78) is connected to the bottom of the two sets of baffles (77). The inner wall of the oil tank (71) is symmetrically provided with two sets of limiting blocks (8), and the bottom of the two sets of limiting blocks (8) abuts against the top of the two sets of baffles (77) respectively. An auxiliary plate (9) is provided at the top of the limiting rod (72); The top of the oil tank (71) is provided with a feed port, and the bottom of the oil tank (71) is connected to a guide pipe (10), which passes through the fixing plate (75).

2. The fixing device for preventing iron filings from clogging the slide rail of a clamp during milling of aluminum profile extrusion dies according to claim 1, characterized in that: The top of the positioning bolt (35) is set as a hexagonal prism protrusion, and the hexagonal edges of the hexagonal prism protrusion are all rounded.

3. The fixing device for preventing iron filings from clogging the slide rail of a clamp during milling of aluminum profile extrusion dies according to claim 1, characterized in that: The auxiliary plate (9) is cylindrical, and an arc groove is provided on the top of the auxiliary plate (9).

4. A method of using a fixing device for preventing iron filings from clogging the slide rail of a clamping fixture during milling of aluminum profile extrusion dies as described in any one of claims 1-3, characterized in that: Includes the following steps, (A) Install anti-shaving structure (3); (A1) Loosen the positioning bolt (35) to release the locking of the positioning bolt (35) to the inner protective cover (34); (A2) Push the inner protective cover (34) toward the outer protective cover (31) until the inner protective cover (34) slides to the bottom of the groove (33); (A3) Place the outer protective cover (31) and the inner protective cover (34) on the surface of the clip (2); (A4) Screw several sets of fixing bolts (32) into the interior of the three-jaw chuck (1) and the outer protective cover (31), and fix the outer protective cover (31) to the surface of the three-jaw chuck (1) by several sets of fixing bolts (32); (A5) Slide the inner protective cover (34) toward the middle of the three-jaw chuck (1) until one end of the inner protective cover (34) abuts against the surface of the extrusion die; (A6), tighten the positioning bolt (35), the auxiliary ring (4) moves downward under the push of the positioning bolt (35) until it is in close contact with the inner protective cover (34). Under the pressure of the positioning bolt (35), the auxiliary ring (4) plays a limiting role on the inner protective cover (34). Through the cooperation of the outer protective cover (31) and the inner protective cover (34), it plays a blocking role on the iron chips generated by the extrusion die during milling. (B) Clean up the iron filings; (B1) Align the rubber strip (62) with the groove (61); (B2) Push the rubber strip (62) until the rubber strip (62) is completely embedded in the groove (61); (B3) Release the clamp (2) from fixing the extrusion mold. The clamp (2) moves to the outside of the three-jaw chuck (1). The cleaning brush (64) moves synchronously under the drive of the clamp (2). During the movement, the cleaning brush (64) cleans out the iron filings in the gap of the three-jaw chuck (1). (C) Lubricate the three-jaw chuck (1); (C1) Lubricating oil is injected into the oil tank (71) through the feed port at the top of the oil tank (71); (C2), the limiting rod (72) is pressed down by the auxiliary plate (9). The limiting rod (72) moves down under the pressure. The limiting ring (73) moves synchronously and squeezes the spring (74). At the same time, the combination of the fixing plate (75) and the fixing rod (76) moves down. The two sets of baffles (77) rotate down under the push of the two sets of fixing rods (76). The spring plate (78) contracts under the squeeze of the two sets of baffles (77). The lubricating oil in the oil tank (71) flows out from the gap between the two sets of baffles (77) and the oil tank (71). It drips into the three-jaw chuck (1) through the guide tube (10) to lubricate the three-jaw chuck (1). (C3) Release the push on the limit rod (72), the spring (74) returns to its shape and pushes the limit ring (73) to move upward. The limit rod (72) moves synchronously. The fixed plate (75) and the fixed rod (76) move upward under the pull of the limit rod (72), releasing the push on the two sets of baffles (77). The spring plate (78) extends, causing the two sets of baffles (77) to rotate to the initial state. The two sets of baffles (77) and the oil tank (71) form a sealed state to prevent excessive lubricating oil from flowing out.

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