A machine tool counterweight device

Abstract

The application provides a machine tool counterweight device and belongs to the technical field of machine tool processing equipment. The machine tool counterweight device comprises a machine tool bottom plate, the upper surface of the machine tool bottom plate is fixedly connected with a machine tool support, the upper surface of the machine tool support is fixedly connected with a supporting plate, the lower surface of the supporting plate is fixedly connected with a U-shaped plate, and the inside of the U-shaped plate is rotationally connected with a movable rod. Through the arrangement of the sleeve and the slide rod, once the chain body is broken during the use of the machine tool, the counterweight block will not be pulled and will do free-fall movement, the falling speed of the counterweight block is accelerated under the action of gravity, the sleeve is rotated at this time and the movable rod drives the sleeve to rotate faster, the slide rod is subjected to centrifugal force and extends outward after the rotation of the sleeve, the spring ring is extruded and drives the baffle to move, the clamping hole clamps the limiting rod through the outward extension of the baffle, the movable rod does not rotate, the counterweight block is pulled out by the anti-falling rope, and the effect of automatic anti-falling is achieved, so that the impact of the counterweight block on the machine tool is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool processing equipment, and particularly relates to a machine tool counterweight device. Background Art

[0002] CNC machining generally refers to the process of machining parts on CNC machine tools. It is an effective way to solve problems such as a wide variety of parts, small batches, complex shapes, and high precision, and to achieve efficient and automated processing. CNC machine tools generally have a head that can move up and down, and the head is equipped with a spindle. Driven by the drive system, the tool on the spindle processes the workpiece clamped on the workbench. Due to the frequent high-speed up and down movement of the spindle during processing, gravity acceleration and temperature rise will be generated, affecting the accuracy of the up and down movement of the spindle, and thus seriously affecting the stability, processing accuracy and life of the machine tool. Existing CNC machine tools generally eliminate the above problems by adding a counterweight system.

[0003] After searching, the patent with Chinese patent application number CN202121507682.7 discloses a counterweight device for a machining machine tool, including a column, a slide rail is provided at the front and rear ends of one side of the column, and the slider can move on the slide rail, the slider is connected to the spindle box, and a lead screw is passed through the spindle box. The lead screw is driven to rotate by a driving member so that the spindle box moves up and down, and a counterweight assembly is above the column. The counterweight assembly includes a counterweight wheel bracket, and a movable counterweight wheel is provided on one side of the counterweight wheel bracket. The counterweight wheel is driven to move by a counterweight cylinder. This patent also has the following shortcomings. Since most counterweight devices pull the counterweight block by a chain, the existing counterweight device does not have an anti-fall function. Once the chain breaks accidentally during the use of the machine tool, it is easy for the counterweight block to hit the machine tool hard. Although the existing shock-absorbing structure can buffer the impact force, it still affects the machine tool. Therefore, a counterweight device with an anti-fall effect is needed to prevent the shaking effect of the device caused by the fall. Summary of the Invention

[0004] The object of the present invention is to provide a machine tool counterweight device, aiming to solve the problem that the counterweight device in the prior art does not have an anti-falling function.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a machine tool counterweight device, comprising a machine tool base plate, the upper surface of the machine tool base plate is fixedly connected to a machine tool bracket, the upper surface of the machine tool bracket is fixedly connected to a support plate, the lower surface of the support plate is fixedly connected to a U-shaped plate, the interior of the U-shaped plate is rotatably connected to a movable rod, one end of the movable rod passes through the interior of the U-shaped plate and extends to the outer surface of the U-shaped plate, one side of the outer surface of the movable rod is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the U-shaped plate, the other end of the torsion spring is fixedly connected to the movable rod, the middle part of the outer surface of the movable rod is fixedly connected to a winch, the outer surface of the winch is fixedly connected to an anti-fall rope, the end of the movable rod away from the torsion spring is fixedly connected to a sleeve, and one side of the sleeve is sleeved with a sliding rod.

[0006] In order to enable the machine tool counterweight device to achieve a rebound effect, as a preferred embodiment of the present invention, one side of the outer surface of the U-shaped plate is fixedly connected to a limiting rod, and the end of the sliding rod close to the sleeve is sleeved with a spring ring, and one end of the spring ring is fixedly connected to one side of the inner wall of the sleeve.

[0007] In order to enable the machine tool counterweight device to achieve the limiting effect, as a preferred embodiment of the present invention, one end of the sliding rod is fixedly connected to a baffle, and a bayonet is provided on one side of the baffle.

[0008] In order to enable this machine tool counterweight device to achieve an overlapping effect, as a preferred embodiment of the present invention, one side of the support plate is rotatably connected to a first rotating shaft, one end of the first rotating shaft passes through one side of the support plate and extends to the other side of the support plate, and the middle part of the outer surface of the support plate is fixedly connected to a first chain sprocket, and the interior of the first chain sprocket is overlapped with a chain body.

[0009] In order to enable this machine tool counterweight device to achieve the transmission function, as a preferred embodiment of the present invention, one side of the support plate is rotatably connected to a second rotating shaft, one end of the second rotating shaft passes through one side of the support plate and extends to the other side of the support plate, and the middle part of the outer surface of the second rotating shaft is fixedly connected to a second chain sprocket.

[0010] In order to make the machine tool counterweight device movable, as a preferred embodiment of the present invention, the chain body is overlapped with the second chain sprocket, and one end of the chain body is fixedly connected to the machine tool head.

[0011] In order to enable the machine tool counterweight device to slide, as a preferred embodiment of the present invention, a slide groove is provided on one side of the upper surface of the machine tool base plate, a slider is slidably connected to the inside of the slide groove, a slide seat is fixedly connected to the upper surface of the slider, and a limiting hole is provided on one side of the machine tool base plate.

[0012] In order to enable this machine tool counterweight device to achieve the effect of rotation, as a preferred embodiment of the present invention, a groove is opened on one side of the upper surface of the machine tool base plate, and the inner wall of the groove is rotatably connected to a threaded rod, one end of the threaded rod passes through the inner wall of the groove and extends to the outer surface of the machine tool base plate, and the outer surface of the threaded rod is threadedly connected to a movable ring, and the movable ring is fixedly connected to the slide.

[0013] In order to make this machine tool counterweight device have a fixed effect, as a preferred embodiment of the present invention, the upper surface of the slide is fixedly connected with a column, the number of the columns is two, and the outer surface of the column is sleeved with a counterweight block, and the counterweight block is fixedly connected to the anti-fall rope and the chain body.

[0014] In order to make the machine tool counterweight device easy to rotate, as a preferred embodiment of the present invention, one end of the threaded rod is fixedly connected to a handle, and a clamping column is inserted into one side of the handle, and the clamping column is threadedly connected to the limiting hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The machine tool counterweight device is provided with a movable rod, a torsion spring, a winch, an anti-fall rope, a sleeve and a slide rod. During the use of the machine tool, after the machine tool head moves upward, the chain body drives the counterweight to move downward. At this time, the anti-fall rope is wound on the winch. When the counterweight moves downward, the anti-fall rope is pulled out from the winch. The movable rod can be rotated in the U-shaped plate, so that the winch drives the movable rod to rotate at the same time. At this time, the torsion spring is deformed after being twisted. When the machine tool head moves downward, the chain body drives the counterweight to move upward. At this time, the elasticity of the torsion spring is used to make The movable rod rotates in the opposite direction and reels the anti-fall rope into the winch again. Once the main body of the chain breaks, the counterweight will not be pulled and will do free fall. The gravity will accelerate the falling speed of the counterweight. At this time, the movable rod drives the sleeve to rotate faster. After the sleeve rotates, the sliding rod is extended outward by centrifugal force, so that the spring coil is squeezed and drives the baffle to move. The baffle extends outward to make the bayonet clamp the limit rod, so that the movable rod stops rotating and the counterweight is pulled out using the anti-fall rope, which has the effect of automatic anti-fall, greatly reducing the impact of the counterweight on the machine tool.

[0017] 2. The machine tool counterweight device is arranged with a slide groove, a slide seat, a groove, a threaded rod, a movable ring and a clamping column. When the counterweight needs to be installed, the threaded rod can be rotated so that the movable ring is driven by the force after the threaded rod is rotated to drive the slide seat to move outward. The slider can slide in the slide groove so that the slide seat can be supported and slide more conveniently. After the slide seat is extended outward, the counterweight is installed on it through the column. After the installation is completed, the threaded rod is rotated in the opposite direction so that the movable ring is driven by the reverse force to move the slide seat inward. After moving, the clamping column is inserted into the limit hole and rotated to quickly fix the handle and the threaded rod, thereby greatly facilitating the workers to install the counterweight and reducing the trouble of the workers in carrying the counterweight and installing it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a front view structural schematic diagram of the present invention;

[0020] Figure 2 Schematic diagram of the U-shaped plate structure in the present invention;

[0021] Figure 3 Schematic diagram of the slide structure in the present invention;

[0022] Figure 4 It is a rear view structural diagram of the present invention;

[0023] Figure 5 It is a schematic diagram of the movable rod structure in the present invention;

[0024] Figure 6 Schematic diagram of the sliding rod structure in the present invention;

[0025] Figure 7 This is a schematic diagram of the sliding seat explosion structure in the present invention;

[0026] Figure 8 It is a schematic diagram of the column structure in the present invention.

[0027] In the figure: 1. Machine tool base plate; 2. Machine tool bracket; 3. Support plate; 4. U-shaped plate; 5. Movable rod; 6. Torsion spring; 7. Winch; 8. Anti-fall rope; 9. Sleeve; 10. Sliding rod; 11. Limit rod; 12. Spring ring; 13. Baffle; 14. Bayonet; 15. First rotating shaft; 16. First chain sprocket; 17. Chain body; 18. Second rotating shaft; 19. Second chain sprocket; 20. Machine tool head; 21. Slide groove; 22. Sliding block; 23. Sliding seat; 24. Limit hole; 25. Groove; 26. Threaded rod; 27. Movable ring; 28. Column; 29. ​​Counterweight; 30. Handle; 31. Clamping column. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example

[0030] See also Figure 1-8 The present invention provides the following technical solutions: a machine tool counterweight device, comprising a machine tool base plate 1, the upper surface of the machine tool base plate 1 is fixedly connected to a machine tool bracket 2, the upper surface of the machine tool bracket 2 is fixedly connected to a support plate 3, the lower surface of the support plate 3 is fixedly connected to a U-shaped plate 4, the interior of the U-shaped plate 4 is rotatably connected to a movable rod 5, one end of the movable rod 5 passes through the interior of the U-shaped plate 4 and extends to the outer surface of the U-shaped plate 4, one side of the outer surface of the movable rod 5 is sleeved with a torsion spring 6, one end of the torsion spring 6 is fixedly connected to the U-shaped plate 4, the other end of the torsion spring 6 is fixedly connected to the movable rod 5, the middle part of the outer surface of the movable rod 5 is fixedly connected to a winch 7, the outer surface of the winch 7 is fixedly connected to an anti-fall rope 8, the end of the movable rod 5 away from the torsion spring 6 is fixedly connected to a sleeve 9, and one side of the sleeve 9 is sleeved with a sliding rod 10.

[0031] In a specific embodiment of the present invention, once the chain body 17 breaks, the counterweight 29 will not be pulled and will perform free fall. The falling speed of the counterweight 29 will be accelerated due to the action of gravity. At this time, the movable rod 5 drives the sleeve 9 to rotate faster. After the sleeve 9 rotates, the slide rod 10 is extended outward by centrifugal force, so that the spring coil 12 is squeezed and drives the baffle 13 to move. The baffle 13 extends outward to allow the bayonet 14 to clamp the limit rod 11, so that the movable rod 5 stops rotating, and the anti-fall rope 8 is used to pull out the counterweight 29, thereby having an automatic anti-fall effect, greatly reducing the impact of the counterweight 29 on the machine tool.

[0032] Specifically, one side of the outer surface of the U-shaped plate 4 is fixedly connected to a limit rod 11, and one end of the sliding rod 10 close to the sleeve 9 is sleeved with a spring ring 12, and one end of the spring ring 12 is fixedly connected to one side of the inner wall of the sleeve 9.

[0033] In this embodiment: after the sleeve 9 rotates, the slide rod 10 is extended outward by the centrifugal force, so that the spring coil 12 is squeezed and drives the baffle 13 to move. When the sleeve 9 resumes normal rotation and slows down, the centrifugal force on the slide rod 10 decreases, causing the spring coil 12 to rebound, driving the slide rod 10 to reset and be recycled for the next time.

[0034] Specifically, one end of the slide rod 10 is fixedly connected to a baffle 13 , and a bayonet 14 is formed on one side of the baffle 13 .

[0035] In this embodiment, the baffle 13 extends outward to allow the bayonet 14 to clamp the limit rod 11, so that the movable rod 5 stops rotating, and the anti-fall rope 8 is used to pull out the counterweight 29, thereby achieving an automatic anti-fall effect.

[0036] Specifically, one side of the support plate 3 is rotatably connected to a first rotating shaft 15, one end of the first rotating shaft 15 passes through one side of the support plate 3 and extends to the other side of the support plate 3, and the middle part of the outer surface of the support plate 3 is fixedly connected to a first chain sprocket 16, and the interior of the first chain sprocket 16 is overlapped with a chain body 17.

[0037] In this embodiment, the rotation of the first rotating shaft 15 can drive the first chain sprocket 16 to rotate, so that the first chain sprocket 16 drives the chain body 17 to move.

[0038] Specifically, one side of the support plate 3 is rotatably connected to a second rotating shaft 18 , one end of the second rotating shaft 18 passes through one side of the support plate 3 and extends to the other side of the support plate 3 , and the middle of the outer surface of the second rotating shaft 18 is fixedly connected to a second chain sprocket 19 .

[0039] In this embodiment, when the second chain toothed disc 19 rotates, the chain body 17 is meshed with each other, which makes the chain body 17 easy to move and facilitates the processing of the machine tool.

[0040] Specifically, the chain body 17 is overlapped with the second chain sprocket 19 , and one end of the chain body 17 is fixedly connected to the machine tool headstock 20 .

[0041] In this embodiment, the chain body 17 is fixed to the machine tool headstock 20, so that when the machine tool headstock 20 moves, it can cooperate with the counterweight device to reduce shaking.

[0042] Specifically, a slide groove 21 is provided on one side of the upper surface of the machine tool base plate 1 , a slider 22 is slidably connected inside the slide groove 21 , a slide seat 23 is fixedly connected to the upper surface of the slider 22 , and a limiting hole 24 is provided on one side of the machine tool base plate 1 .

[0043] In this embodiment, the slider 22 can slide in the slide groove 21, so that the slide seat 23 can be supported and slide more conveniently, and the limiting hole 24 can be connected and fixed with the clamping column 31.

[0044] Specifically, a groove 25 is opened on one side of the upper surface of the machine tool base plate 1, and the inner wall of the groove 25 is rotatably connected to a threaded rod 26. One end of the threaded rod 26 passes through the inner wall of the groove 25 and extends to the outer surface of the machine tool base plate 1. The outer surface of the threaded rod 26 is threadedly connected to a movable ring 27, and the movable ring 27 is fixedly connected to the slide 23.

[0045] In this embodiment, the threaded rod 26 can be rotated so that the movable ring 27 is driven by the force of the threaded rod 26 to move the slide 23 outward, thereby greatly facilitating the workers to install the counterweight 29.

[0046] Specifically, the upper surface of the slide 23 is fixedly connected to a column 28 , and there are two columns 28 . The outer surface of the column 28 is sleeved with a counterweight 29 , and the counterweight 29 is fixedly connected to the anti-fall rope 8 and the chain body 17 .

[0047] In this embodiment, the two uprights 28 allow the counterweight 29 to only move up and down, preventing the counterweight 29 from shaking. The anti-fall rope 8 can pull the counterweight 29 after the chain body 17 breaks.

[0048] Specifically, one end of the threaded rod 26 is fixedly connected to a handle 30 , and a clamping column 31 is inserted into one side of the handle 30 . The clamping column 31 is threadedly connected to the limiting hole 24 .

[0049] In this embodiment, after the movement, the clamping column 31 is inserted into the limiting hole 24 and rotated, so that the handle 30 and the threaded rod 26 can be quickly fixed, and the threaded rod 26 can be easily rotated through the handle 30.

[0050] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0051] The working principle and use process of the present invention are as follows: when the machine tool counterweight device is in use, after the machine tool headstock 20 moves upward, the chain body 17 drives the counterweight 29 to move downward. At this time, the winch 7 is wound with an anti-fall rope 8. When the counterweight 29 moves downward, the anti-fall rope 8 is pulled out from the winch 7, and the movable rod 5 can be rotated in the U-shaped plate 4, so that the winch 7 drives the movable rod 5 to rotate at the same time. At this time, the torsion spring 6 is deformed after being twisted, and the machine tool headstock 20 moves downward, so that the chain body 17 drives the counterweight 29 to move upward. At this time, the elasticity of the torsion spring 6 is used to make the movable rod 5 rotate in the opposite direction, and the anti-fall rope 8 is rewound in the winch 7 again. Once the chain body 17 breaks, the counterweight 29 will not be pulled in and will do free fall. The gravity causes the counterweight 29 to fall faster. At this time, the movable rod 5 drives the sleeve 9 to rotate faster. After the sleeve 9 rotates, the slide bar 10 is subjected to centrifugal force to extend outward, so that the spring coil 12 is squeezed and brought The movable baffle 13 moves, and the baffle 13 extends outward to make the bayonet 14 clamp the limit rod 11, so that the movable rod 5 stops rotating, and the anti-fall rope 8 is used to pull the counterweight 29 out, thereby having the effect of automatic anti-fall, greatly reducing the impact of the counterweight 29 on the machine tool.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A machine tool counterweight device, comprising a machine tool base plate (1), characterized in that: The upper surface of the machine tool base plate (1) is fixedly connected to the machine tool bracket (2), the upper surface of the machine tool bracket (2) is fixedly connected to the support plate (3), the lower surface of the support plate (3) is fixedly connected to the U-shaped plate (4), the interior of the U-shaped plate (4) is rotatably connected to a movable rod (5), one end of the movable rod (5) passes through the interior of the U-shaped plate (4) and extends to the outer surface of the U-shaped plate (4), one side of the outer surface of the movable rod (5) is sleeved with a torsion spring (6), one end of the torsion spring (6) is fixedly connected to the U-shaped plate (4), the other end of the torsion spring (6) is fixedly connected to the movable rod (5), the middle part of the outer surface of the movable rod (5) is fixedly connected to a winch (7), the outer surface of the winch (7) is fixedly connected to an anti-fall rope (8), the end of the movable rod (5) away from the torsion spring (6) is fixedly connected to a sleeve (9), and one side of the sleeve (9) is sleeved with a slide rod (10); A slide groove (21) is provided on one side of the upper surface of the machine tool base plate (1), a slider (22) is slidably connected inside the slide groove (21), a slide seat (23) is fixedly connected to the upper surface of the slider (22), and a limiting hole (24) is provided on one side of the machine tool base plate (1); A first chain toothed disc (16) is fixedly connected to the middle portion of the outer surface of the support plate (3); a chain main body (17) is overlapped inside the first chain toothed disc (16); the chain main body (17) is overlapped with the second chain toothed disc (19); and one end of the chain main body (17) is fixedly connected to a machine tool headstock (20); The upper surface of the slide seat (23) is fixedly connected to a column (28), the number of the columns (28) is two, the outer surface of the column (28) is sleeved with a counterweight (29), and the counterweight (29) is fixedly connected to the anti-fall rope (8) and the chain body (17).

2. A machine tool counterweight device according to claim 1, characterized in that: One side of the outer surface of the U-shaped plate (4) is fixedly connected to a limiting rod (11), and one end of the sliding rod (10) close to the sleeve (9) is sleeved with a spring ring (12), and one end of the spring ring (12) is fixedly connected to one side of the inner wall of the sleeve (9).

3. The machine tool counterweight device according to claim 1, characterized in that: One end of the slide rod (10) is fixedly connected to a baffle (13), and a bayonet (14) is provided on one side of the baffle (13).

4. A machine tool counterweight device according to claim 1, characterized in that: One side of the support plate (3) is rotatably connected to a first rotating shaft (15), and one end of the first rotating shaft (15) passes through one side of the support plate (3) and extends to the other side of the support plate (3).

5. The machine tool counterweight device according to claim 1, characterized in that: One side of the support plate (3) is rotatably connected to a second rotating shaft (18), one end of the second rotating shaft (18) passes through one side of the support plate (3) and extends to the other side of the support plate (3), and the middle part of the outer surface of the second rotating shaft (18) is fixedly connected to a second chain toothed disc (19).

6. The machine tool counterweight device according to claim 1, characterized in that: A groove (25) is provided on one side of the upper surface of the machine tool base plate (1); a threaded rod (26) is rotatably connected to the inner side wall of the groove (25); one end of the threaded rod (26) passes through the inner side wall of the groove (25) and extends to the outer surface of the machine tool base plate (1); a movable ring (27) is threadedly connected to the outer surface of the threaded rod (26); and the movable ring (27) is fixedly connected to the slide seat (23).

7. A machine tool counterweight device according to claim 6, characterized in that: One end of the threaded rod (26) is fixedly connected to a handle (30), one side of the handle (30) is plugged with a clamping column (31), and the clamping column (31) is threadedly connected to the limiting hole (24).

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