Anti-noise fixing clamp for machining

Abstract

The invention relates to the technical field of clamps, in particular to an anti-noise fixing clamp for machining, which comprises a worktable, uniformly distributed supporting legs are fixedly connected to the outer surface of the lower end of the worktable, two bases are arranged on the outer surface of the upper end of the worktable, and a display mechanism is arranged above the bases. The display mechanism is used for accurately controlling the force of the clamp for clamping a workpiece and comprises an air cylinder, an arc-shaped plate, a spring, a first clamping plate, a second clamping plate, a color card and a contrast mark. An operator needs to place a workpiece between the first clamping plate and the second clamping plate and then starts the air cylinder, the comparison mark on the first clamping plate can move along the color card, the clamping degree of the first clamping plate and the second clamping plate to the workpiece can be judged by pointing the color on the color card through the comparison mark, and therefore whether the air cylinder continues to push the cambered plate or not is judged; therefore, the problem that the workpiece cannot be used due to the fact that the workpiece is clamped by the first clamping plate and the second clamping plate is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and particularly to an anti-noise fixed jig for machining. Background Art

[0002] A jig refers to a device used to fix a machining object during the mechanical manufacturing process, so that it occupies the correct position to receive construction or inspection, also known as a fixture. Generally speaking, in any process of the technological process, a device used to quickly, conveniently and safely install a workpiece can be called a jig. A jig usually consists of a positioning element, a clamping device, a tool guiding element, a indexing device, a connecting element, etc.

[0003] In the prior art, a jig generally uses two clamping pieces to clamp a workpiece, and then uses screws to fix the two clamping pieces. However, the clamping degree of the workpiece by this kind of jig is relatively fuzzy, and when clamping some workpieces with a relatively thin thickness, it is easy to cause damage to the workpiece due to inaccurate control of the clamping degree, and in severe cases, the workpiece cannot be used.

[0004] Therefore, an anti-noise fixed jig for machining is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-noise fixed jig for machining to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: an anti-noise fixed jig for machining, including: a workbench, the lower outer surface of the workbench is fixedly connected with uniformly distributed support legs, two groups of bases are arranged on the upper outer surface of the workbench, and a display mechanism is arranged above the bases, and the display mechanism is used to accurately control the force of the jig to clamp the workpiece.

[0007] Preferably, the display mechanism includes a cylinder, an arc-shaped plate, a spring, a first clamping plate, a second clamping plate, a color card, and a comparison mark; One side of the upper outer surface of the base is fixedly connected with a cylinder, one end of the cylinder is fixedly connected with an arc-shaped plate, uniformly distributed springs are fixedly connected to one side surface of the arc-shaped plate, one end of the spring is fixedly connected with a first clamping plate, color cards are fixedly connected to both ends of the upper surface of the arc-shaped plate, comparison marks are fixedly connected to both ends of the upper surface of the first clamping plate, and a second clamping plate is fixedly connected to the other end of the upper surface of the base.

[0008] Preferably, a limiting column is arranged inside one end of the spring, and one end of the limiting column is fixedly connected with the arc-shaped plate.

[0009] Preferably, a lifting column is rotatably connected inside the base. The lower end of the lifting column penetrates through the base and extends into the interior of the workbench. One side of the lifting column is tightly abutted against a lead screw. One end of the lead screw penetrates through the base and extends to the outside. The lead screw is threadedly connected to the base.

[0010] Preferably, one end of the lead screw is fixedly connected to a round block, and a rotating hole is formed through one side of the outer circumferential surface of the round block.

[0011] Preferably, a rotating disk is arranged on the outer surface of one side of the workbench. A connecting rod is fixedly connected to the center position of one side surface of the rotating disk. One end of the connecting rod is fixedly connected to a first bevel gear. A second bevel gear is meshed with the side surface of the first bevel gear. A threaded rod is arranged through the interior of the second bevel gear. The threaded rod is fixedly connected to the second bevel gear. The threaded rod is rotatably connected to the workbench. The threaded rod is threadedly connected to the lifting column. An L-shaped rod is slidably connected inside the lifting column. One end of the L-shaped rod penetrates through the lifting column and is fixedly connected to the workbench.

[0012] Preferably, the diameter ratio of the first bevel gear to the second bevel gear is 1:3.

[0013] Preferably, a fixing plate is fixedly connected to a position close to one side of the lower surface of the workbench. A support plate is fixedly connected to the lower end of the fixing plate. A slag receiving box is arranged on the upper end of the support plate. A handle is fixedly connected to the upper end side surface of the slag receiving box.

[0014] Preferably, permanent magnets are connected and fixed to the surfaces of the support plate and the fixing plate in contact with the slag receiving box. The slag receiving box is made of iron material.

[0015] Preferably, rubber pads are fixedly connected to the side surfaces of the first clamping plate and the second clamping plate and the lower surfaces of the support legs and the support plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the operator needs to place the workpiece between the first clamping plate and the second clamping plate and then start the air cylinder. The comparison mark on the first clamping plate will move along the color card. By the color indicated by the comparison mark on the color card, the clamping degree of the first clamping plate and the second clamping plate on the workpiece can be judged, so as to judge whether the air cylinder continues to push the bow-shaped plate, thus avoiding the problem that the workpiece is clamped by the first clamping plate and the second clamping plate and finally the workpiece cannot be used.

[0017] 2. In the present invention, the operator loosens the lead screw so that the lead screw no longer tightly abuts against the lifting column, and then rotates the base to adjust the fixing angle of the workpiece, thus facilitating the welding of the workpiece.

[0018] 3. In the present invention, the operator rotates the rotating disc to drive the first bevel gear and the second bevel gear to rotate. When the second bevel gear rotates, it will drive the threaded rod to rotate together. Since the threaded rod is limited by the L-shaped rod and cannot rotate, at this time, the lifting column will rise along the threaded rod and drive the base to rise together, that is, drive the clamped workpiece to rise together, realizing the height adjustment of the machining, facilitating the welding positions of the two workpieces to be at the same height, and making it easy to weld the welded workpieces.

[0019] 4. In the present invention, the installed permanent magnet magnetizes the slag receiving box, making the slag receiving box magnetic. Thus, the impurities generated during cutting and welding the workpieces are easily attracted by the magnetism and enter the slag receiving box, improving the collection effect of the slag receiving box. When the slag receiving box leaves the permanent magnet, it loses magnetism, facilitating the dumping of the impurities in the slag receiving box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional view of the overall structure of the present invention; Figure 2 is a top view of the present invention; Figure 3 is a three-dimensional view of the display mechanism of the present invention; Figure 4 is the present invention Figure 3 the enlarged view of point A in; Figure 5 is a sectional view of the arched plate and the connecting member of the present invention; Figure 6 is a sectional view of the base and the connecting member of the present invention; Figure 7 is a sectional view of the slag receiving box and the connecting member of the present invention; Figure 8 is a side three-dimensional view of the overall mechanism of the present invention.

[0021] In the figure: 1, support leg; 2, workbench; 3, base; 4, display mechanism; 41, cylinder; 42, arched plate; 43, spring; 44, first clamping plate; 45, second clamping plate; 46, color card; 47, comparison mark; 5, limit column; 6, lead screw; 7, lifting column; 8, round block; 9, rotating hole; 10, rotating disc; 11, connecting rod; 12, first bevel gear; 13, threaded rod; 14, second bevel gear; 15, L-shaped rod; 16, fixing plate; 17, support plate; 18, slag receiving box; 19, handle; 20, permanent magnet; 21, rubber pad. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] By providing a noise-proof fixed fixture for machining in the embodiments of the present invention, the technical problem in the prior art is solved. Generally, two clamping pieces are used to clamp a workpiece in the existing fixture, and then the two clamping pieces are fixed with screws. However, the clamping degree of the workpiece by this kind of fixture is relatively vague, and when clamping some workpieces with relatively thin thickness, it is easy to cause damage to the workpiece due to inaccurate control of the clamping degree, and in serious cases, the workpiece cannot be used. The technical solution in the embodiments of the present invention to solve the above technical problem is generally as follows: The operator needs to place the workpiece between the first clamping plate 44 and the second clamping plate 45 and then start the air cylinder 41. The comparison mark 47 on the first clamping plate 44 will move along the color card 46. By pointing the comparison mark 47 at the color on the color card 46, the clamping degree of the first clamping plate 44 and the second clamping plate 45 on the workpiece can be judged, so as to judge whether the air cylinder 41 continues to push the bow-shaped plate 42, thus avoiding the problem that the workpiece is clamped by the first clamping plate 44 and the second clamping plate 45 and finally cannot be used.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0025] Please refer to Figures 1 to 8 , the present invention provides a technical solution for a noise-proof fixed fixture for machining: A noise-proof fixed fixture for machining, as Figure 1 , Figure 2 shown, includes: a workbench 2, the lower outer surface of the workbench 2 is fixedly connected with uniformly distributed support legs 1, two groups of bases 3 are arranged on the upper outer surface of the workbench 2, and a display mechanism 4 is arranged above the bases 3, and the display mechanism 4 is used to accurately control the force of the fixture to clamp the workpiece.

[0026] In general, the fixtures in the prior art use two clamping pieces to clamp the workpiece, and then use screws to fix the two clamping pieces. However, the clamping degree of this kind of fixture for the workpiece is relatively fuzzy. When clamping some workpieces with relatively thin thickness, it is easy to cause damage to the workpiece due to inaccurate control of the clamping degree, and in severe cases, the workpiece cannot be used. In the present invention, the operator needs to place the workpiece to be fixed in the display mechanism 4 on the workbench 2, and then start the display mechanism 4. The display mechanism 4 will gradually clamp the workpiece. When the display mechanism 4 clamps the workpiece, the display mechanism 4 will display the clamping force. By observing the clamping force, it can be judged whether to continue clamping the workpiece, so as to avoid the problem that the workpiece is damaged by the fixture and finally cannot be used.

[0027] As an embodiment of the present invention, as Figure 3 , Figure 4 shown, the display mechanism 4 includes a cylinder 41, a bow-shaped plate 42, a spring 43, a first clamping plate 44, a second clamping plate 45, a color card 46, and a comparison scale 47; One side position of the upper outer surface of the base 3 is fixedly connected with a cylinder 41. One end of the cylinder 41 is fixedly connected with a bow-shaped plate 42. The side surface of the bow-shaped plate 42 is fixedly connected with evenly distributed springs 43. One end of the spring 43 is fixedly connected with a first clamping plate 44. Color cards 46 are fixedly connected to both ends of the upper surface of the bow-shaped plate 42. Comparison scales 47 are fixedly connected to both ends of the upper surface of the first clamping plate 44. A second clamping plate 45 is fixedly connected to the other end of the upper surface of the base 3.

[0028] When the display mechanism 4 works, in the present invention, the operator needs to place the workpiece between the first clamping plate 44 and the second clamping plate 45 and then start the cylinder 41. The cylinder 41 pushes the bow-shaped plate 42 and the first clamping plate 44 to move. The first clamping plate 44 will abut against the surface of the workpiece. As the cylinder 41 gradually pushes the bow-shaped plate 42 to move, the spring 43 will be gradually compressed and at the same time the first clamping plate 44 will move towards the inside of the bow-shaped plate 42. The comparison scale 47 on the first clamping plate 44 will move along the color card 46. The color of the color card 46 gradually becomes darker from one end to the other end, for example, gradually changes from light red to dark red. By comparing the color pointed by the comparison scale 47 on the color card 46, the clamping degree of the first clamping plate 44 and the second clamping plate 45 on the workpiece can be judged, so as to judge whether the cylinder 41 continues to push the bow-shaped plate 42, thus avoiding the problem that the workpiece is damaged by the first clamping plate 44 and the second clamping plate 45 and finally cannot be used.

[0029] As an embodiment of the present invention, as Figure 5 shown, a limit post 5 is arranged inside one end of the spring 43. One end of the limit post 5 is fixedly connected with the bow-shaped plate 42.

[0030] When the cylinder 41 pushes the bow-shaped plate 42 to move so that the first clamping plate 44 and the second clamping plate 45 clamp the workpiece, the spring 43 will be compressed. When the spring 43 is compressed to the maximum deformation amount, the spring 43 is likely to lose its deformation. By installing the limit post 5 to limit the deformation amount of the spring 43 first, the effect of protecting the spring 43 can be achieved.

[0031] As an implementation manner of the present invention, as Figure 6 shown, a lifting column 7 is rotatably connected inside the base 3. The lower end of the lifting column 7 penetrates through the base 3 and extends into the interior of the workbench 2. One side of the lifting column 7 is tightly abutted against a lead screw 6. One end of the lead screw 6 penetrates through the base 3 and extends to the outside. The lead screw 6 is threadedly connected to the base 3.

[0032] When welding two workpieces, sometimes it is necessary to adjust the angle to align the welding position to ensure the welding effect of the workpiece. In the present invention, the operator loosens the lead screw 6 so that the lead screw 6 no longer tightly abuts against the lifting column 7, and then rotates the base 3 to adjust the fixed angle of the workpiece. When adjusted to the appropriate position, the lead screw 6 is tightened to make the lead screw 6 tightly abut against the lifting column 7, realizing the fixation of the base 3, that is, the fixation of the workpiece, so as to facilitate the welding of the workpiece.

[0033] As an implementation manner of the present invention, as Figure 3 、 Figure 6 shown, one end of the lead screw 6 is fixedly connected to a round block 8, and a rotating hole 9 is formed through one side of the outer circumferential surface of the round block 8.

[0034] When turning the lead screw 6, since it is not easy to apply force to the lead screw 6 to cause the lead screw 6 to move difficultly, in the present invention, the operator needs to insert a steel rod or other tool into the rotating hole 9, and then hold one end of the steel rod and turn it, so as to easily turn the lead screw 6, and at the same time, it is also easy to perform a fastening rotation on the lead screw 6.

[0035] As an implementation manner of the present invention, as Figure 6 shown, a rotating disk 10 is arranged on the outer surface of one side of the workbench 2. The center position of one side surface of the rotating disk 10 is fixedly connected to a connecting rod 11. One end of the connecting rod 11 is fixedly connected to a first bevel gear 12. The side surface of the first bevel gear 12 is meshed with a second bevel gear 14. A threaded rod 13 is arranged through the inside of the second bevel gear 14. The threaded rod 13 is fixedly connected to the second bevel gear 14. The threaded rod 13 is rotatably connected to the workbench 2. The threaded rod 13 is threadedly connected to the lifting column 7. An L-shaped rod 15 is slidably connected inside the lifting column 7. One end of the L-shaped rod 15 penetrates through the lifting column 7 and is fixedly connected to the workbench 2.

[0036] After the angle adjustment of the welded workpieces is completed, sometimes the heights of the two workpieces are not horizontal, resulting in the inability to perform welding. To facilitate the adjustment of the welded workpieces; in the present invention, the operator rotates the rotating disc 10. When the rotating disc 10 rotates, it drives the connecting rod 11 and the first bevel gear 12 to rotate together. When the first bevel gear 12 rotates, it drives the engaged second bevel gear 14 to rotate. When the second bevel gear 14 rotates, it drives the threaded rod 13 to rotate together. The threaded rod 13 has a threaded rotation with the lifting column 7. Since the L-shaped rod 15 is provided in the lifting column 7 to limit the rotation of the lifting column 7, at this time, the lifting column 7 will rise along the threaded rod 13 and drive the base 3 to rise together, that is, drive the clamped workpiece to rise together, realizing the height adjustment of the processing, facilitating the welding positions of the two workpieces to be at the same height, and making it easy to weld the welded workpieces.

[0037] As an implementation manner of the present invention, as Figure 6 shown, the diameter ratio of the first bevel gear 12 to the second bevel gear 14 is 1:3.

[0038] By making the diameters of the first bevel gear 12 and the second bevel gear 14 different, when the first bevel gear 12 drives the second bevel gear 14 to rotate, it can easily rotate the rotating disc 10 to drive the first bevel gear 12 to rotate, so as to achieve labor saving.

[0039] As an implementation manner of the present invention, as Figure 1 、 Figure 7 shown, a fixing plate 16 is fixedly connected to a position near one side of the lower surface of the workbench 2. The lower end of the fixing plate 16 is fixedly connected to a supporting plate 17. A slag receiving box 18 is arranged at the upper end of the supporting plate 17. A handle 19 is fixedly connected to the upper side surface of the slag receiving box 18.

[0040] After the workpiece is fixed, welding or cutting operations will be performed on the workpiece. When welding, welding slag will be generated, and when cutting, iron filings will be generated. The generated welding slag and iron filings fall by gravity and finally fall into the slag receiving box 18, realizing the collection of impurities. The installed handle 19 facilitates the handling of the slag receiving box 18 for dumping.

[0041] As an implementation manner of the present invention, as Figure 7 shown, permanent magnets 20 are fixedly connected to the surfaces of the supporting plate 17 and the fixing plate 16 in contact with the slag receiving box 18. The slag receiving box 18 is made of iron material.

[0042] In order to improve the slag receiving effect of the slag receiving box 18, the slag receiving box 18 is magnetically conducted by the permanent magnet 20, so that the slag receiving box 18 is magnetized, making it easier for the impurities generated during cutting and welding of the workpiece to enter the slag receiving box 18 under the attraction of magnetism, improving the collection effect of the slag receiving box 18. When the slag receiving box 18 leaves the permanent magnet 20, it loses magnetism, facilitating the dumping of the impurities in the slag receiving box 18.

[0043] As an implementation manner of the present invention, as Figure 3 、 Figure 8 shown, rubber pads 21 are fixedly connected to the side surfaces of the first clamping plate 44 and the second clamping plate 45 and the lower surfaces of the support legs 1 and the support plate 17.

[0044] The rubber pad 21 is relatively soft. The rubber pads 21 at the first clamping plate 44 and the second clamping plate 45 play a role in protecting the workpiece, preventing the first clamping plate 44 and the second clamping plate 45 from clamping the workpiece. At the same time, the rubber pad 21 can well buffer the shaking generated during cutting of the workpiece, playing a role in noise reduction; the rubber pads 21 at the support legs 1 and the support plate 17 play a role in increasing the contact area with the ground, improving the stability effect, reducing the shaking during cutting, and relatively reducing the generation of noise.

[0045] Usage method: For the present invention, the operator needs to place the workpiece between the first clamping plate 44 and the second clamping plate 45 and then start the cylinder 41. The cylinder 41 pushes the bow-shaped plate 42 and the first clamping plate 44 to move. The first clamping plate 44 will abut against the surface of the workpiece. As the cylinder 41 gradually pushes the bow-shaped plate 42 to move, the spring 43 will be gradually compressed and at the same time the first clamping plate 44 will move into the bow-shaped plate 42. The comparison mark 47 on the first clamping plate 44 will move along the color card 46. The color of the color card 46 gradually becomes darker from one end to the other end, for example, gradually changing from light red to dark red. By comparing the mark 47 pointing to the color on the color card 46, the clamping degree of the first clamping plate 44 and the second clamping plate 45 on the workpiece can be judged, so as to judge whether the cylinder 41 continues to push the bow-shaped plate 42, thus avoiding the problem that the workpiece is clamped by the first clamping plate 44 and the second clamping plate 45 and finally the workpiece cannot be used; When welding two workpieces, sometimes it is necessary to adjust the angle to align the welding position. The operator loosens the screw rod 6 so that the screw rod 6 no longer abuts against the lifting column 7, and then rotates the base 3 to adjust the fixed angle of the workpiece. When adjusted to the appropriate position, the screw rod 6 is tightened so that the screw rod 6 abuts against the lifting column 7 to fix the base 3, that is, to fix the workpiece, thus facilitating the welding of the workpiece; After the angle adjustment of the welded workpieces is completed, sometimes the heights of the two workpieces are not horizontal, resulting in the inability to perform welding. To facilitate the adjustment of the welded workpieces, the operator rotates the rotating disk 10. When the rotating disk 10 rotates, it will drive the connecting rod 11 and the first bevel gear 12 to rotate together. When the first bevel gear 12 rotates, it will drive the engaged second bevel gear 14 to rotate. When the second bevel gear 14 rotates, it will drive the threaded rod 13 to rotate together. The threaded rod 13 undergoes a threaded rotation with the lifting column 7. Since the L-shaped rod 15 is provided in the lifting column 7 to limit the rotation of the lifting column 7, at this time, the lifting column 7 will rise along the threaded rod 13 and drive the base 3 to rise together, that is, drive the clamped workpiece to rise together, realizing the height adjustment of the machining, facilitating the welding positions of the two workpieces to be at the same height, and making it easy to weld the welded workpieces.

[0046] The electrical components appearing in this article are all electrically connected to the external main controller and the 220V mains through a transformer, and the main controller can be a conventional known device such as a computer for control. The product model provided by the present invention is only used according to the structural characteristics of the technical solution. The product will be adjusted and modified after purchase to make it more matching and conform to the technical solution to which the present invention belongs. It is an optimal application technical solution of the present technical solution. The product model can be replaced and modified according to the required technical parameters. It is well-known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding use effects through the technical solution provided by the present invention.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise-proof fixing fixture for machining, comprising: Workbench (2), characterized in that: evenly distributed support legs (1) are fixedly connected to the outer surface of the lower end of the workbench (2), two groups of bases (3) are arranged on the outer surface of the upper end of the workbench (2), a display mechanism (4) is arranged above the base (3), and the display mechanism (4) is used to accurately control the force of the clamp clamping the workpiece.

2. The anti-noise fixed fixture for machining according to claim 1, characterized in that: The display mechanism (4) includes a cylinder (41), an arcuate plate (42), a spring (43), a first clamping plate (44), a second clamping plate (45), a color card (46), and a comparison mark (47); A cylinder (41) is fixedly connected to the outer surface of the upper end of the base (3) near one side, an arcuate plate (42) is fixedly connected to one end of the cylinder (41), evenly distributed springs (43) are fixedly connected to one side surface of the arcuate plate (42), a first clamping plate (44) is fixedly connected to one end of the spring (43), color cards (46) are fixedly connected to both ends of the upper surface of the arcuate plate (42), comparison marks (47) are fixedly connected to both ends of the upper surface of the first clamping plate (44), and a second clamping plate (45) is fixedly connected to the other end of the upper surface of the base (3).

3. The anti-noise fixed fixture for mechanical processing according to claim 2, wherein: A limit post (5) is arranged inside one end of the spring (43), and one end of the limit post (5) is fixedly connected to the arcuate plate (42).

4. The anti-noise fixed fixture for machining according to claim 2, characterized in that: A lifting column (7) is rotatably connected to the inside of the base (3), the lower end of the lifting column (7) penetrates through the base (3) and extends into the inside of the workbench (2), a lead screw (6) is tightly abutted against one side of the lifting column (7), one end of the lead screw (6) penetrates through the base (3) and extends to the outside, and the lead screw (6) is threadedly connected to the base (3).

5. The anti-noise fixed fixture for machining according to claim 4, wherein: A round block (8) is fixedly connected to one end of the lead screw (6), and a rotation hole (9) is formed through one side of the outer circular surface of the round block (8).

6. The anti-noise fixing jig for machining according to claim 4, wherein: A rotating disk (10) is arranged on the outer surface of one side of the workbench (2), a connecting rod (11) is fixedly connected to the center position of one side surface of the rotating disk (10), a first bevel gear (12) is fixedly connected to one end of the connecting rod (11), a second bevel gear (14) is meshed with the side surface of the first bevel gear (12), a threaded rod (13) is arranged inside the second bevel gear (14), the threaded rod (13) is fixedly connected to the second bevel gear (14), the threaded rod (13) is rotatably connected to the workbench (2), the threaded rod (13) is threadedly connected to the lifting column (7), and an L-shaped rod (15) is slidably connected to the inside of the lifting column (7), and one end of the L-shaped rod (15) penetrates through the lifting column (7) and is fixedly connected to the workbench (2).

7. The anti-noise fixing jig for machining according to claim 6, characterized in that: The diameter ratio of the first bevel gear (12) to the second bevel gear (14) is 1:

3.

8. The anti-noise fixed fixture for machining according to claim 6, characterized in that: A fixing plate (16) is fixedly connected to a position near one side of the lower surface of the workbench (2). A support plate (17) is fixedly connected to the lower end of the fixing plate (16). A slag receiving box (18) is arranged at the upper end of the support plate (17). A handle (19) is fixedly connected to the upper end side surface of the slag receiving box (18).

9. The anti-noise fixing jig for machining according to claim 1, characterized in that: Permanent magnets (20) are fixedly connected to the surfaces of the support plate (17) and the fixing plate (16) that are in contact with the slag receiving box (18). The slag receiving box (18) is made of iron material.

10. A noise-proof fixing jig for machining according to claim 1, characterized in that: Rubber pads (21) are fixedly connected to the side surfaces of the first clamping plate (44) and the second clamping plate (45) and the lower surfaces of the support legs (1) and the support plate (17).

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