Gantry base structure of numerical control machine tool

Abstract

The utility model relates to the technical field of machine manufacturing and numerical control machine tools, in particular to a gantry base structure of a numerical control machine tool, which comprises a base, L-shaped fixing plates are symmetrically and fixedly mounted at two ends of the top side of the base, an adjusting groove is formed in the base, and a positive and negative thread screw is rotatably mounted in the adjusting groove. One end of the forward and reverse thread screw penetrates through the side wall of the adjusting groove, the thread directions of the two ends of the forward and reverse thread screw are opposite, the two ends of the forward and reverse thread screw are in reverse threaded connection with sliding blocks, U-shaped connecting plates are fixedly installed at the tops of the two sliding blocks, and movable grooves in sliding connection with the connecting plates are formed in the base. According to the utility model, when the track plate is replaced by rotating the positive and negative tooth screw rod, a plurality of threaded seats do not need to be screwed, so that the track plate is simple and quick to disassemble, a large amount of manpower and time do not need to be consumed, and the replacement efficiency of the track plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, and particularly relates to a gantry base structure of a numerical control machine tool. Background Art

[0002] In the fine processing process of inorganic mineral castings, the base of a gantry machine tool plays a core role. Due to its unique physical and chemical properties, inorganic mineral castings have extremely high requirements for processing equipment. Among them, the stability and precision of the gantry machine tool base directly determine the final quality of casting processing.

[0003] A Chinese patent with the publication number CN115070442A discloses a machine tool bed body made of polymer mineral casting, which relates to the technical field of machine tool bed bodies; in order to improve the use flexibility; it specifically includes a machine tool main body, symmetric fixing plates are arranged on both sides of the top of the machine tool main body, side clamping plates are arranged outside the two fixing plates, first engaging teeth adapted to each other are arranged on the outer walls of the adjacent sides of the side clamping plates and the fixing plates, a track plate is clamped between the side clamping plates and the fixing plates, second engaging teeth adapted to the first engaging teeth are arranged on the outer walls of both sides of the track plate, and both the first engaging teeth and the second engaging teeth are of an isosceles triangle structure.

[0004] The above machine tool bed body device makes the track plate detachable by setting structures such as the track plate, the first engaging teeth and the second engaging teeth. When the track plate is damaged, it is convenient to replace. However, when disassembling the track plate of this device, a plurality of threaded seats need to be disassembled. The number of these bolts is large, and it takes a lot of time and labor to disassemble these threaded seats. Therefore, the problem of low replacement efficiency will occur. Summary of the Utility Model

[0005] Aiming at the above-mentioned shortcomings of the prior art, the utility model provides a gantry base structure of a numerical control machine tool, which can effectively solve the problem of low replacement efficiency of the track plate caused by the need to screw a plurality of threaded seats when replacing the track plate of the machine tool base in the prior art.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0007] The utility model provides a gantry base structure of a numerical control machine tool, which comprises a base. At both ends of the top side of the base, L-shaped fixing plates are symmetrically and fixedly installed. An adjusting groove is formed inside the base. A positive and negative thread screw is rotatably installed inside the adjusting groove. One end of the positive and negative thread screw penetrates through the side wall of the adjusting groove. The thread directions at both ends of the positive and negative thread screw are opposite. Sliders are in reverse threaded connection at both ends of the positive and negative thread screw. U-shaped connecting plates are fixedly installed at the tops of the two sliders. An activity groove which is slidably connected with the connecting plate is formed inside the base. Main sliding grooves which are in limit sliding connection with both ends of the connecting plate are formed in the base and the fixing plate. Both ends of the connecting plate movably penetrate through the main sliding grooves and are jointly and fixedly connected with side clamping plates. The bottom sides of the two side clamping plates are respectively attached to the top side surfaces of the corresponding fixing plates. Track plates are arranged between the two side clamping plates and the corresponding fixing plates.

[0008] Preferably, main clamping teeth are fixedly installed on the opposite inner walls of the fixing plate and the side clamping plate. Slave clamping teeth which are adapted to the main clamping teeth are fixedly installed on both sides of the track plate.

[0009] Preferably, clamping columns are fixedly installed at both ends of one side of the two fixing plates close to the side clamping plate. Claw slots which are in limit sliding connection with the clamping columns are also formed at both ends of the two side clamping plates. A plurality of clamping columns movably penetrate through the corresponding claw slots. Springs are sleeved on the outer sides of the plurality of clamping columns. One ends of the plurality of springs are fixedly connected with the outer walls of the fixing plates. The other ends of the plurality of springs are all fixedly connected with the side clamping plates.

[0010] Preferably, limiting grooves are formed at both ends of the plurality of clamping columns. Limiting rods which are in limit sliding connection with the limiting grooves are also fixedly installed on the inner walls of the plurality of claw slots.

[0011] Preferably, a plurality of stabilizing plates are fixedly installed on the top sides of the two connecting plates. Slave sliding grooves which are in limit sliding connection with the stabilizing plates are jointly formed in the base and the fixing plate. The plurality of stabilizing plates movably penetrate through the corresponding slave sliding grooves and are fixedly connected with the side clamping plates.

[0012] Preferably, one end of the positive and negative thread screw penetrating through the inner side wall of the adjusting groove is fixedly connected with a rotating ring. A rotating handle is fixedly installed at the eccentric position of the rotating ring. A rubber sleeve is fixedly installed on the outer side of the rotating handle. A plurality of rubber strips are fixedly installed on the outer side of the rubber sleeve.

[0013] Preferably, a main clamping hole is formed in the rotating ring. A bolt is in threaded connection with the main clamping hole. A plurality of slave clamping holes are formed in the side wall of one end of the base close to the rotating ring.

[0014] The technical solution provided by the utility model has the following beneficial effects compared with the known prior art:

[0015] 1. Rotate the swivel ring and the left - and - right - hand threaded screw through the turning handle, so that the two threaded sliders drive the corresponding connecting plates and side clamping plates to move away from each other. After the two side clamping plates move away from each other and release the pressing and clamping of the track plate, the track plate can be removed from between the fixed plate and the side clamping plates, and then a new track plate can be replaced. This achieves the purpose of not needing to turn multiple threaded seats when replacing the track plate. The disassembly of the track plate is simple and fast, without consuming a large amount of manpower and time, and improves the replacement efficiency of the track plate.

[0016] 2. After replacing the new track plate, rotate the left - and - right - hand threaded screw in the reverse direction to make the sliders, connecting plates and side clamping plates move towards each other. Then, the side clamping plates clamp and squeeze the new track plate between the side clamping plates and the fixed plate. Then, turn the bolt from the main card hole into the corresponding secondary card hole to achieve the effect of locking the swivel ring, which can prevent the swivel ring from rotating and affecting the pressing and clamping effect of the side clamping plates on the track plate.

[0017] In summary, when replacing the track plate of the present utility model by rotating the left - and - right - hand threaded screw, there is no need to turn multiple threaded seats, making the disassembly of the track plate simple and fast, without consuming a large amount of manpower and time, and improving the replacement efficiency of the track plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a three - dimensional structure schematic diagram of the present utility model;

[0020] Figure 2 It is a structure schematic diagram of the left - and - right - hand threaded screw, connecting plate and swivel ring of the present utility model;

[0021] Figure 3 It is a structure schematic diagram of the fixed plate, fixed plate and side clamping plate of the present utility model;

[0022] Figure 4 It is a structure schematic diagram of the base of the present utility model;

[0023] Figure 5 It is a side - view sectional structure schematic diagram of the base of the present utility model;

[0024] Figure 6 For the present utility model Figure 1 The enlarged structure schematic diagram at position A.

[0025] Reference numerals: 1, base; 2, fixed plate; 3, adjustment groove; 4, right - hand and left - hand screw; 5, slider; 6, connecting plate; 601, movable groove; 7, main chute; 8, side splint; 9, main engaging teeth; 10, track plate; 101, secondary engaging teeth; 11, clamping post; 12, clamping groove; 13, spring; 14, limiting groove; 15, limiting rod; 16, stabilizing plate; 17, secondary chute; 18, swivel ring; 19, turning handle; 20, rubber sleeve; 21, rubber strip; 22, main clamping hole; 23, secondary clamping hole; 24, bolt. Detailed implementation mode

[0026] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model will be further described below with reference to the embodiments.

[0028] Embodiment: Refer to Figures 1 to 6, A gantry base structure of a numerically controlled machine tool, including a base 1. At both ends of the top side of the base 1, L-shaped fixing plates 2 are symmetrically and fixedly installed. An adjustment groove 3 is opened inside the base 1. A positive and negative thread screw 4 is rotatably installed inside the adjustment groove 3. One end of the positive and negative thread screw 4 penetrates through the side wall of the adjustment groove 3. The thread directions at both ends of the positive and negative thread screw 4 are opposite. The two ends of the positive and negative thread screw 4 are reversely thread-connected with sliders 5. At the top of the two sliders 5, U-shaped connecting plates 6 are fixedly installed. An activity groove 601 that is slidably connected to the connecting plate 6 is opened inside the base 1. Main chutes 7 for limiting and sliding connection with both ends of the connecting plate 6 are opened on the base 1 and the fixing plate 2. Both ends of the connecting plate 6 movably penetrate through the main chutes 7 and are commonly fixedly connected to side clamping plates 8. The bottom sides of the two side clamping plates 8 are respectively attached to the top side surfaces of the corresponding fixing plates 2. Track plates 10 are arranged between the two side clamping plates 8 and the corresponding fixing plates 2; when the track plate 10 needs to be replaced, rotate the positive and negative thread screw 4. When the positive and negative thread screw 4 rotates, the two thread-connected sliders 5 drive the corresponding connecting plates 6 to move away from each other. Both ends of the two connecting plates 6 slide in the main chutes 7. Then, the side clamping plates 8 fixedly connected to the connecting plates 6 are driven to move away from each other through the connecting plates 6. When the two side clamping plates 8 move away from each other, the limitation on the track plate 10 is released. The worn track plate 10 can be taken out from between the fixing plate 2 and the side clamping plate 8, and then a new track plate 10 can be replaced. After the replacement is completed, reverse-rotate the positive and negative thread screw 4 to make the sliders 5 and the connecting plates 6 move towards each other. Then, the two side clamping plates 8 also move towards each other until the track plate 10 is clamped and pressed between the fixing plate 2 and the side clamping plate 8 again. When replacing the track plate 10 by rotating the positive and negative thread screw 4, there is no need to screw multiple threaded seats. The disassembly of the track plate 10 is simple and fast, without consuming a large amount of manpower and time, improving the replacement efficiency of the track plate 10.

[0029] Furthermore, main teeth 9 are fixedly installed on the opposite inner walls of the fixing plate 2 and the side clamping plate 8. Slave teeth 101 adapted to the main teeth 9 are fixedly installed on both sides of the track plate 10; when the side clamping plate 8 clamps and presses the track plate 10, the installation of the track plate 10 is more stable through the clamping connection between the main teeth 9 and the slave teeth 101, and the track plate 10 is not likely to slide when carrying various moving parts of the machine tool.

[0030] Furthermore, at both ends of one side of the two fixing plates 2 close to the side clamping plates 8, clamping posts 11 are fixedly installed. At both ends of the two side clamping plates 8, clamping grooves 12 which are in limit sliding connection with the clamping posts 11 are also provided. A plurality of clamping posts 11 all movably penetrate through the corresponding clamping grooves 12. Spring sleeves 13 are sleeved on the outer sides of the plurality of clamping posts 11. One ends of the plurality of spring sleeves 13 are fixedly connected with the outer walls of the fixing plates 2, and the other ends of the plurality of spring sleeves 13 are all fixedly connected with the side clamping plates 8. When replacing the track slab 10, when the side clamping plates 8 are driven by the connecting plates 6 to move away from the fixing plates 2, the spring sleeves 13 are stretched, and the clamping posts 11 also slide in the clamping grooves 12. When the replacement is completed and the side clamping plates 8 are moved again to clamp the track slab 10 between the side clamping plates 8 and the fixing plates 2, the elastic force of the spring sleeves 13 makes the clamping of the side clamping plates 8 and the fixing plates 2 on the track slab 10 more stable, and the clamping posts 11 and the clamping grooves 12 prevent the spring sleeves 13 from being wound during the stretching and resetting processes.

[0031] Furthermore, limiting grooves 14 are provided at both ends of the plurality of clamping posts 11, and limiting rods 15 which are in limit sliding connection with the limiting grooves 14 are also fixedly installed on the inner walls of the plurality of clamping grooves 12. When the clamping posts 11 slide in the clamping grooves 12, the corresponding limiting rods 15 also slide in the limiting grooves 14. The limiting grooves 14 and the limiting rods 15 make the sliding of the clamping posts 11 in the clamping grooves 12 more stable.

[0032] Furthermore, a plurality of stabilizing plates 16 are fixedly installed on the top sides of the two connecting plates 6. A secondary sliding groove 17 which is in limit sliding connection with the stabilizing plates 16 is jointly provided on the base 1 and the fixing plates 2. The plurality of stabilizing plates 16 all movably penetrate through the corresponding secondary sliding grooves 17 and are fixedly connected with the side clamping plates 8. When the side clamping plates 8 are driven to slide by the connecting plates 6, only the connection of the two ends of the connecting plates 6 with the side clamping plates 8 may cause uneven force on the side clamping plates 8 during sliding. Therefore, the sliding of the plurality of stabilizing plates 16 in the secondary sliding grooves 17 makes the force on the side clamping plates 8 more uniform during sliding.

[0033] Furthermore, one end of the left - hand and right - hand screw 4 penetrating through the inner side wall of the adjusting groove 3 is fixedly connected with a rotating ring 18. An eccentric position of the rotating ring 18 is fixedly installed with a rotating handle 19. An outer side of the rotating handle 19 is fixedly installed with a rubber sleeve 20, and a plurality of rubber strips 21 are fixedly installed on an outer side of the rubber sleeve 20. When the left - hand and right - hand screw 4 needs to be rotated, the rotating ring 18 is rotated by holding the rotating handle 19 by hand, and then the left - hand and right - hand screw 4 is driven to rotate by the rotating ring 18, so that it is more convenient and labor - saving for the operator to rotate the left - hand and right - hand screw 4. Both the rubber sleeve 20 and the plurality of rubber strips 21 are made of silica gel material, and the two increase the friction force between the operator's hand and the rotating handle 19, thereby preventing the operator from slipping when rotating the rotating handle 19.

[0034] Furthermore, a main clamping hole 22 is formed in the swivel ring 18, and a bolt 24 is threadedly connected to the main clamping hole 22. A plurality of secondary clamping holes 23 are formed in the side wall of one end of the base 1 close to the swivel ring 18. After the replacement of the track slab 10 is completed and the swivel ring 18 does not need to be rotated, the bolt 24 is rotated within the main clamping hole 22 so that one end of the bolt 24 close to the base 1 is inserted into the corresponding secondary clamping hole 23. The rotation of the swivel ring 18 is restricted by the bolt 24 threadedly connected in the main clamping hole 22, thereby preventing the swivel ring 18 from rotating and affecting the pressing and clamping of the track slab 10 by the side clamping plate 8.

[0035] The working principle of this device is as follows:

[0036] 1. When the track slab 10 needs to be replaced, the swivel ring 18 and the left - and - right - hand threaded screw 4 are rotated by holding the rotating handle 19. When the left - and - right - hand threaded screw 4 rotates, the two slid blocks 5 connected by threads drive the corresponding connecting plates 6 to move away from each other. The two ends of the two connecting plates 6 slide within the main sliding grooves 7, and a plurality of stabilizing plates 16 also slide within the corresponding secondary sliding grooves 17. Then, the side clamping plates 8 fixedly connected to the two are driven to move away from each other through the connecting plates 6 and the stabilizing plates 16. When the two side clamping plates 8 move away from each other, the limit on the track slab 10 is released, and the worn track slab 10 can be taken out from between the fixing plate 2 and the side clamping plate 8. Then, a new track slab 10 can be replaced. When replacing the track slab 10 by rotating the left - and - right - hand threaded screw 4, it is not necessary to turn a plurality of threaded seats, making the disassembly of the track slab 10 simple and fast, without consuming a large amount of manpower and time, and improving the replacement efficiency of the track slab 10.

[0037] 2. After the replacement is completed, the swivel ring 18 and the left - and - right - hand threaded screw 4 are rotated in the reverse direction by the rotating handle 19, so that the slid blocks 5 and the connecting plates 6 move towards each other, and then the two side clamping plates 8 also move towards each other until the track slab 10 is clamped and pressed again between the fixing plate 2 and the side clamping plate 8. After the swivel ring 18 does not need to be rotated, the bolt 24 is rotated within the main clamping hole 22 so that one end of the bolt 24 close to the base 1 is inserted into the corresponding secondary clamping hole 23. The rotation of the swivel ring 18 is restricted by the bolt 24 threadedly connected in the main clamping hole 22, thereby preventing the swivel ring 18 from rotating and affecting the pressing and clamping of the track slab 10 by the side clamping plate 8. When the side clamping plate 8 clamps and presses the track slab 10, the installation of the track slab 10 is more stable through the engagement between the main engaging teeth 9 and the secondary engaging teeth 101, and the track slab 10 is not prone to sliding when carrying various moving parts of the machine tool.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gantry base structure for a CNC machine tool, characterized in that: The invention comprises a base (1), wherein L-shaped fixing plates (2) are symmetrically fixedly installed at both ends of the top side of the base (1), an adjusting groove (3) is provided inside the base (1), a positive and negative threaded screw (4) is rotatably installed inside the adjusting groove (3), one end of the positive and negative threaded screw (4) passes through the side wall of the adjusting groove (3), the threads at both ends of the positive and negative threaded screw (4) are in opposite directions, the two ends of the positive and negative threaded screw (4) are connected with sliders (5) in opposite directions by threads, and the tops of the two sliders (5) are fixedly installed with U-shaped connecting plates (6), The base (1) is provided with a movable groove (601) slidably connected to the connecting plate (6), and the base (1) and the fixed plate (2) are provided with main sliding grooves (7) connected to the two ends of the connecting plate (6) in a limited sliding manner. Both ends of the connecting plate (6) are movable through the main sliding grooves (7) and are fixedly connected to the side clamping plates (8). The bottom sides of the two side clamping plates (8) are respectively in contact with the top side surfaces of the corresponding fixed plates (2), and a track plate (10) is provided between the two side clamping plates (8) and the corresponding fixed plates (2).

2. The gantry base structure of a CNC machine tool according to claim 1, characterized in that: Main latch teeth (9) are fixedly mounted on the opposite inner walls of the fixed plate (2) and the side clamping plate (8), and slave latch teeth (101) matching the main latch teeth (9) are fixedly mounted on both sides of the track plate (10).

3. The gantry base structure of a CNC machine tool according to claim 1, characterized in that: Both ends of the two fixing plates (2) near the side clamping plates (8) are fixedly mounted with clamping columns (11), and both ends of the two side clamping plates (8) are also provided with clamping grooves (12) connected to the clamping columns (11) in a limited sliding manner. Multiple clamping columns (11) are movable through corresponding clamping grooves (12), and multiple springs (13) are mounted on the outer sides of multiple clamping columns (11). One end of multiple springs (13) is fixedly connected to the outer wall of the fixing plate (2), and the other end of multiple springs (13) is fixedly connected to the side clamping plate (8).

4. The gantry base structure of a CNC machine tool according to claim 3, characterized in that: Both ends of the plurality of clamping columns (11) are provided with limiting grooves (14), and limiting rods (15) which are slidably connected to the limiting grooves (14) are fixedly mounted on the inner walls of the plurality of clamping grooves (12).

5. The gantry base structure of a CNC machine tool according to claim 1, characterized in that: A plurality of stabilizing plates (16) are fixedly mounted on the top sides of the two connecting plates (6); a secondary slide groove (17) which is limitedly slidably connected to the stabilizing plates (16) is provided on the base (1) and the fixed plate (2); and the plurality of stabilizing plates (16) are movably inserted into the corresponding secondary slide grooves (17) and are fixedly connected to the side clamping plates (8).

6. The gantry base structure of a CNC machine tool according to claim 1, characterized in that: One end of the positive and negative threaded screw (4) passing through the inner wall of the adjustment groove (3) is fixedly connected to a rotating ring (18), a rotating handle (19) is fixedly installed at an eccentric position of the rotating ring (18), a rubber sleeve (20) is fixedly installed on the outer side of the rotating handle (19), and a plurality of rubber strips (21) are fixedly installed on the outer side of the rubber sleeve (20).

7. The gantry base structure of a CNC machine tool according to claim 6, characterized in that: The rotating ring (18) is provided with a main clamping hole (22), a bolt (24) is threadedly connected to the main clamping hole (22), and a plurality of secondary clamping holes (23) are provided on a side wall of one end of the base (1) close to the rotating ring (18).

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