High-precision numerical control floor-type machine tool square ram

Abstract

The application discloses a high-precision numerical control floor-type machine tool square ram, relates to the field of machine tool rams, and comprises a ram body, a top plate arranged on the top of the ram body, a friction mechanism installed in the middle of the ram body, and a supporting mechanism arranged at the bottom of the friction mechanism. Through the combined action of the rotating block and the rotating disc, the four arc-shaped pushing grooves change positions, the first moving rod and the second moving block are driven to move, the second moving block drives the pushing rod to move, the first moving block is driven to move, the friction between the ram body and the track is increased, the influence of the self weight is offset, meanwhile, the friction between the extrusion pads of the flexible structure and the machine tool track is gradually increased, the stable operation of the ram body is ensured, the stability and the accuracy of the machining process are improved, the deviation and vibration are reduced, and the machining quality is more reliable.

Description

Technical Field

[0001] This invention relates to the field of machine tool square slide technology, specifically to a high-precision CNC floor-standing machine tool square slide. Background Technology

[0002] A lathe is a machine tool primarily used to machine rotating workpieces using a cutting tool. Drills, reamers, taps, dies, and knurling tools can also be used on a lathe for corresponding machining operations. Lathes are mainly used for machining shafts, discs, sleeves, and other workpieces with rotating surfaces, while the ram is another movable mechanism superimposed on top of a movable mechanism on the machine tool.

[0003] For example, the announcement CN202162558U, entitled "A Rolling and Sliding Composite Guide Rail Mechanism for a Square Slide Roller of a Machine Tool," includes: a square slide roll, with steel guide rails embedded in its four corners; a saddle, a box-shaped structure, in which the square slide roll slides within the inner cavity of the saddle box-shaped structure; the bottom surface and one side surface of the inner cavity of the box-shaped structure serve as first and second reference surfaces, and the other two surfaces of the inner cavity serve as third and fourth surfaces for installation and adjustment; L-shaped support blocks are provided at the four corners of the front and rear ends of the inner cavity of the box-shaped structure, and the two inner surfaces of the L-shaped support blocks are open... An arc-shaped groove is provided; sixteen support blocks are respectively embedded in the arc-shaped groove; circulating rolling blocks are respectively provided on the outer side of the support blocks on the first and second sides; the circulating rolling blocks are in contact with the steel guide rail; adjustable circulating rolling blocks with wedges are provided on the outer side of the support blocks corresponding to the third and fourth sides; the adjustable circulating rolling blocks with wedges are in contact with the steel guide rail; the support pads are provided with soft strips on the contact surface of the steel guide rail; pressure plates are respectively provided on the outer side of the support blocks, sealing the support blocks in the arc-shaped groove of the L-shaped support blocks.

[0004] However, in the existing technology, as the machine tool ram moves downward under the control of the drive mechanism, the ram body will gradually extend downward. At this time, the contact area between the ram body and the track gradually decreases, which means that the friction between the two will also decrease. This will cause the ram body to continue to move downward, and the self-weight will cause the drill bit and other parts to deviate, which will affect the accuracy of the machining. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision CNC floor-type machine tool square slide to solve the problem mentioned in the background art where the slide becomes unstable and wobbles due to reduced friction when moving downwards.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision CNC floor-type machine tool square slide, including a slide body, a top plate provided on the top of the slide body, a friction mechanism installed in the middle of the slide body, and a support mechanism provided at the bottom of the friction mechanism;

[0007] The friction mechanism includes a support plate and a rotating disk. The bottom of the rotating disk is rotatably connected to the center of the top of the support plate. The surface of the rotating disk has multiple arc-shaped pushing grooves. The bottom of each of the four ends of the support plate is fixedly connected to a fixed plate. A first moving rod is provided on the top of the fixed plate. One end of the first moving rod is slidably connected to the support plate, and the other end of the first moving rod is fixedly connected to a second moving block. One end of the second moving block is fixedly connected to a pushing rod. Both ends of the pushing rod are slidably connected to the first moving blocks. One end of the first moving block is fixedly connected to a compression pad. A limit block is fixedly connected to the top of one end of the first moving rod. The limit block is slidably connected to the arc-shaped pushing grooves. A rotating block is fixedly connected to the center of the rotating disk. The bottom end of the rotating block is rotatably connected to the support plate, and a threaded rod is threadedly connected to the inner side of the rotating block.

[0008] Preferably, a first sliding groove is provided in the middle of the fixed plate, and a second sliding groove is provided on both sides of the fixed plate. The first sliding groove is slidably connected to the bottom end of the second moving block, and the second sliding groove is slidably connected to the bottom end of the first moving block.

[0009] Preferably, a second limiting groove is provided at one end of the fixed plate, and a second limiting rod is fixedly connected to the bottom of one end of the first moving rod.

[0010] Preferably, the second limiting rod is slidably connected to the second limiting groove, and a second baffle is fixedly connected to the bottom end of the second limiting rod, the diameter of the second baffle being larger than the width of the second limiting groove.

[0011] Preferably, the surface of the rotating disk has two first limiting grooves, a first limiting rod is slidably connected inside the first limiting groove, and a first baffle is fixedly connected to the top of the first limiting rod.

[0012] Preferably, the top end of the threaded rod is fixedly connected to the top plate.

[0013] Preferably, the support mechanism includes a housing, two limiting frames are fixedly connected to one side of the housing, a movable plate is disposed between the two limiting frames, and a pressing block is fixedly connected to one end of the movable plate.

[0014] Preferably, a rack is fixedly connected to one side of the movable plate, and a half gear is meshed with one side of the rack, with the shaft end of the half gear rotatably connected to the housing.

[0015] Preferably, one end of the half gear is rotatably connected to two transmission rods, a cylinder is fixedly installed on one side of the housing, one end of the cylinder is fixedly connected to a second moving rod, and one end of the second moving rod is rotatably connected to four transmission rods.

[0016] Preferably, the top and bottom of the movable plate are provided with guide grooves, and the two limiting frames are slidably connected to the guide grooves on opposite sides.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, the combined action of the rotating block and the rotating disk causes the four arc-shaped pushing grooves to change position, driving the first moving rod and the second moving block to move. The second moving block drives the pushing rod, pushing the first moving block to move, increasing the friction between the ram body and the track, offsetting the influence of its own weight. At the same time, the friction between the flexible extrusion pad and the machine tool track gradually increases, ensuring the stable operation of the ram body. The entire design improves the stability and accuracy of the processing, reduces deviations and vibrations, and makes the processing quality more reliable.

[0019] 2. In this invention, the smooth sliding of the first moving block in the first slide groove ensures its stable linear movement under the push of the push rod. The sliding of the second moving block in the second slide groove ensures its accurate response to the first moving rod. The sliding of the second limiting rod in the second limiting groove prevents the first moving rod from deviating. The first limiting groove and the first limiting rod limit the rotation angle of the rotating disk, preventing overshoot or accidental movement. Through multiple sliding and limiting mechanisms, the stability and accuracy of each component during movement and rotation are ensured, potential overshoot or movement problems are avoided, and a high-precision machining process is ensured.

[0020] 3. In this invention, the operation of the cylinder drives the movement of the moving rod and multiple transmission rods, thereby realizing the rotation of the half gear. The rotation of the half gear meshes with the rack, causing the rack to move in a predetermined direction, which in turn drives the moving plate to move linearly. The limit frame ensures the linear movement of the moving plate, and the guide groove ensures the accuracy of its movement. At the same time, the two racks work together to make the two moving plates drive the extrusion block to gradually approach the machine tool track, improving the overall stability and the smoothness of the operation process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the square slide block of the high-precision CNC floor-standing machine tool of the present invention;

[0022] Figure 2 This is a schematic diagram of the high-precision CNC floor-standing machine tool square slide friction mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram showing the disassembled structure of the friction mechanism of the square slide block in the high-precision CNC floor-type machine tool of the present invention;

[0024] Figure 4 This is a schematic diagram of the top structure of the fixing plate of the square slide block of the high-precision CNC floor-standing machine tool of the present invention;

[0025] Figure 5 This is a schematic diagram of the high-precision CNC floor-standing machine tool square slide support mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the housing of the square slide block of the high-precision CNC floor-standing machine tool of the present invention;

[0027] Figure 7 This is a cross-sectional structural schematic diagram of the square slide support mechanism for the high-precision CNC floor-standing machine tool of the present invention.

[0028] In the diagram: 1. Slide body; 2. Top plate; 3. Friction mechanism; 31. Rotating disk; 311. Arc-shaped pushing groove; 312. First limiting groove; 313. First limiting rod; 314. First baffle; 32. Rotating block; 321. Threaded rod; 33. First moving rod; 331. Limiting block; 332. Second limiting rod; 333. Second baffle; 34. First moving block; 341. Extrusion pad; 35. Second moving block; 351. Push rod; 36. Fixed plate; 361. First sliding groove; 362. Second sliding groove; 363. Second limiting groove; 37. Support plate; 4. Support mechanism; 41. Housing; 42. Cylinder; 43. Limiting frame; 44. Moving plate; 441. Guide groove; 45. Extrusion block; 46. Second moving rod; 47. Transmission rod; 48. Half gear; 49. Rack. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] Reference Figure 1-5 As shown: A high-precision CNC floor-type machine tool square slide includes a slide body 1, a top plate 2 is provided on the top of the slide body 1, a friction mechanism 3 is installed in the middle of the slide body 1, and a support mechanism 4 is provided at the bottom of the friction mechanism 3;

[0032] The friction mechanism 3 includes a support plate 37 and a rotating disk 31. The bottom of the rotating disk 31 is rotatably connected to the top center of the support plate 37. The surface of the rotating disk 31 is provided with multiple arc-shaped pushing grooves 311. The bottom of the four ends of the support plate 37 is fixedly connected to a fixing plate 36. The top of the fixing plate 36 is provided with a first moving rod 33. One end of the first moving rod 33 is slidably connected to the support plate 37, and the other end of the first moving rod 33 is fixedly connected to a second moving block 35. One end of the second moving block 35 is fixedly connected to a pushing rod 351. Both ends of the pushing rod 351 are slidably connected to first moving blocks 34. One end of the first moving block 34 is fixedly connected to a compression pad 341. One end of the first moving rod 33 is fixedly connected to a limit block 331. The limit block 331 is slidably connected to the arc-shaped pushing grooves 311. The middle of the rotating disk 31 is fixedly connected to a rotating block 32. The bottom end of the rotating block 32 is rotatably connected to the support plate 37, and the inner side of the rotating block 32 is threadedly connected to a threaded rod 321.

[0033] In this embodiment, when the slide block 1 moves up and down, it first undergoes relative displacement with the threaded rod 321. This displacement causes the rotating block 32 to rotate under the action of the threaded rod 321, thereby driving the entire rotating disk 31 to rotate. During the rotation of the rotating disk 31, the four arc-shaped pushing grooves 311 change position and apply force to the limiting block 331 through the arc-shaped pushing grooves 311. This force causes the limiting block 331 to move the first moving rod 33, which in turn causes the second moving block 35 to move.

[0034] When the second moving block 35 moves, it simultaneously drives the push rod 351. The push rod 351 applies a force to the first moving block 34, causing it to move under the drive of the push rod 351. The two first moving blocks 34 apply a compressive force to the machine tool track using the pressing block 45 on one side, thereby increasing the friction between the ram body 1 and the machine tool track. This increase in friction helps to offset the influence of the ram body 1's own weight on the accuracy of machine tool machining.

[0035] Furthermore, as the ram body 1 gradually moves downward, its contact area with the machine tool track gradually decreases, and the frictional force also decreases accordingly. To maintain stability, through the coordinated action of components such as the rotating block 32 and the rotating disk 31, the pressing pads 341 on one side of the multiple first moving blocks 34 come into contact with the machine tool track. As the rotating disk 31 continues to rotate, the pressing force gradually increases. Because the pressing pads 341 have a flexible structure, the frictional force between them and the machine tool track also increases. This increased frictional force ensures the stability of the ram body 1 during operation, maintaining accurate and stable operation even under its own weight and dynamic load. The ram body 1 can maintain a stable frictional force with the machine tool track during its up-and-down movement, thereby improving the accuracy and stability of the machining process.

[0036] Example 2

[0037] Figure 2-4 As shown, a first sliding groove 361 is formed in the middle of the fixed plate 36, and second sliding grooves 362 are formed on both sides of the fixed plate 36. The first sliding groove 361 is slidably connected to the bottom end of the second moving block 35, and the second sliding groove 362 is slidably connected to the bottom end of the first moving block 34. A second limiting groove 363 is formed at one end of the fixed plate 36, and a second limiting rod 332 is fixedly connected to the bottom of one end of the first moving rod 33. The second limiting rod 332 is slidably connected to the second limiting groove 363, and a second baffle 333 is fixedly connected to the bottom end of the second limiting rod 332. The diameter of the second baffle 333 is larger than the width of the second limiting groove 363. Two first limiting grooves 312 are formed on the surface of the rotating disk 31. A first limiting rod 313 is slidably connected inside the first limiting groove 312, and a first baffle 314 is fixedly connected to the top end of the first limiting rod 313. The top end of the threaded rod 321 is fixedly connected to the top plate 2.

[0038] In this embodiment, when the first moving block 34 moves, it slides smoothly inside the first slide groove 361, a design that ensures stability during movement. This stability is crucial for ensuring that the first moving block 34 can move stably in a straight line after being pushed by the push rod 351. Straight-line movement avoids deviations, thereby preventing potential problems when in contact with the machine tool slide rail.

[0039] When the first moving rod 33 drives the second moving block 35, the second moving block 35 slides inside the second groove 362. This design ensures the stability of the second moving block 35 during movement, enabling it to accurately respond to the drive of the first moving rod 33.

[0040] To further ensure the stable movement of the first moving rod 33, the second limiting rod 332 at the bottom slides inside the second limiting groove 363. This limiting design prevents the first moving rod 33 from deviating during movement, ensuring that it moves precisely along the preset path. Furthermore, the presence of the second baffle 333 prevents the second limiting rod 332 from accidentally disengaging from the second limiting groove 363, thereby ensuring the stable drive of the first moving rod 33 on the second moving block 35.

[0041] When the rotating disk 31 rotates, the limiting action of the first limiting groove 312 and the first limiting rod 313 effectively limits the rotation angle of the rotating disk 31. This limiting mechanism prevents the rotating disk 31 from rotating too far due to inertia. In this way, it can be ensured that the rotation of the rotating disk 31 is kept within a suitable range, avoiding any potential overshoot or unexpected movement, thereby ensuring the stability and reliability of the entire system.

[0042] Example 3

[0043] according to Figure 5-7 As shown, the support mechanism 4 includes a housing 41. Two limiting frames 43 are fixedly connected to one side of the housing 41, and a movable plate 44 is disposed between the two limiting frames 43. A pressing block 45 is fixedly connected to one end of the movable plate 44. A rack 49 is fixedly connected to one side of the movable plate 44, and a half gear 48 is meshed with one side of the rack 49. The shaft end of the half gear 48 is rotatably connected to the housing 41. Two transmission rods 47 are rotatably connected to one end of the half gear 48. A cylinder 42 is fixedly installed on one side of the housing 41. A second movable rod 46 is fixedly connected to one end of the cylinder 42, and one end of the second movable rod 46 is rotatably connected to the four transmission rods 47. Guide grooves 441 are provided at the top and bottom of the movable plate 44, and the two limiting frames 43 are slidably connected to the guide grooves 441 on opposite sides.

[0044] In this embodiment, when the cylinder 42 starts operating, it drives the moving rod to move. This movement further drives multiple transmission rods 47 located at one end of the moving rod. These transmission rods 47, through their connection with the moving rod 47, cause the transmission rod 47 to drive the half gear 48 to rotate. The rotation of the half gear 48 is a rotation centered on its shaft end.

[0045] During rotation, the half gear 48 meshes with the rack 49, applying a force to it. This force causes the rack 49 to move in a predetermined direction. As the rack 49 moves, the connected movable plate 44 also moves accordingly. To ensure the linear movement of the movable plate 44, the limiting bracket 43 plays a crucial limiting role. The guide groove 441 inside the movable plate 44 ensures the accuracy of its linear motion, avoiding any unnecessary deviation or vibration.

[0046] More importantly, through the coordinated action of the moving rod and the transmission rod 47, the two racks 49 move simultaneously. Furthermore, the two racks 49 move in opposite directions, meaning the two moving plates 44 move in opposite directions. This reverse movement ensures that the two moving plates 44 can drive the pressing block 45 at one end to gradually approach the machine tool track. This approach not only improves the overall stability of the system but also makes the entire operation process smoother and more efficient.

[0047] The device's operation and working principle are as follows: When the slide block 1 moves up and down, it will have relative displacement with the threaded rod 321. This displacement causes the rotating block 32 to rotate under the action of the threaded rod 321, thereby driving the entire rotating disk 31 to rotate. During the rotation of the rotating disk 31, the four push grooves will change their positions and apply force to the limiting block 331. This allows the limiting rod to drive the moving rod to move.

[0048] When the first moving rod 33 moves, the second limiting rod 332 at the bottom slides inside the second limiting groove 363, ensuring that the movement of the first moving rod 33 does not deviate. In addition, the presence of the second baffle 333 can prevent the second limiting rod 332 from accidentally disengaging from the second limiting groove 363, thereby ensuring the stable drive of the first moving rod 33 on the second moving block 35.

[0049] As the moving rod moves, the second moving block 35 also begins to move. During this movement, the second moving block 35 simultaneously drives the push rod 351. Driven by the first moving rod 33, the second moving block 35 slides inside the second slide groove 362, ensuring its stability during movement. The push rod 351 applies a force to the first moving block 34, causing it to move under the drive of the push rod 351. During the movement of the first moving block 34, it slides inside the first slide groove 361, ensuring its smoothness during movement. This ensures that the first moving block 34 can move stably in a straight line after being pushed by the push rod 351, avoiding deviation when contacting the machine tool slide rail.

[0050] Subsequently, the two first moving blocks 34 will use the pressing block 45 on one side to apply pressure to the machine tool track to increase the friction between the slide body 1 and the machine tool track, thereby offsetting the influence of the slide body 1's own weight on the machine tool's machining accuracy.

[0051] As the ram body 1 continues to move downwards, the contact area with the machine tool track gradually decreases, and the friction also decreases accordingly. At this time, the synergistic effect of structures such as the rotating block 32 and the rotating disk 31 begins to take effect. The compression pads 341 on one side of the multiple first moving blocks 34 contact the machine tool track, and the compression force gradually increases as the rotating disk 31 rotates. Because the compression pads 341 adopt a flexible structure, the friction between them and the machine tool slide rail also gradually increases, thereby ensuring the stability of the ram body 1 during operation.

[0052] Furthermore, the operation of cylinder 42 drives the moving rod to move, which in turn drives multiple transmission rods 47 at one end. These transmission rods 47 cause the transmission rods 47 to drive the half gear 48 to move, causing the half gear 48 to rotate around its shaft end. When the half gear 48 rotates, it applies a meshing force to the rack 49, causing the rack 49 to move. The movement of the rack 49 causes the moving plate 44 to move together. Under the limiting action of the limit frame 43, the moving plate 44 maintains linear movement through its own guide groove 441. Finally, through the coordinated action of the moving rod and the transmission rods 47, the two racks 49 move simultaneously, and their directions of movement are opposite. This opposite direction of movement ensures that the two moving plates 44 can drive the pressing block 45 at one end to gradually approach the machine tool track, thereby increasing the overall stability.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision CNC floor-type machine tool square slide, comprising a slide body (1), wherein a top plate (2) is provided on the top of the slide body (1), characterized in that: A friction mechanism (3) is installed in the middle of the ram body (1), and a support mechanism (4) is provided at the bottom of the friction mechanism (3). The friction mechanism (3) includes a support plate (37) and a rotating disk (31). The bottom of the rotating disk (31) is rotatably connected to the top center of the support plate (37). The surface of the rotating disk (31) is provided with multiple arc-shaped pushing grooves (311). The bottom of each of the four ends of the support plate (37) is fixedly connected to a fixing plate (36). The top of the fixing plate (36) is provided with a first moving rod (33). One end of the first moving rod (33) is slidably connected to the support plate (37), and the other end of the first moving rod (33) is fixedly connected to a second moving block (35). A push rod (351) is fixedly connected to one end. A first moving block (34) is slidably connected to both ends of the push rod (351). A compression pad (341) is fixedly connected to one end of the first moving block (34). A limit block (331) is fixedly connected to the top of one end of the first moving rod (33). The limit block (331) is slidably connected to the arc-shaped push groove (311). A rotating block (32) is fixedly connected to the middle of the rotating disk (31). The bottom end of the rotating block (32) is rotatably connected to the support plate (37). A threaded rod (321) is threadedly connected to the inner side of the rotating block (32).

2. The high-precision CNC floor-type machine tool square slide block according to claim 1, characterized in that: The fixing plate (36) has a first sliding groove (361) in the middle and a second sliding groove (362) on both sides. The first sliding groove (361) is slidably connected to the bottom end of the second moving block (35), and the second sliding groove (362) is slidably connected to the bottom end of the first moving block (34).

3. The high-precision CNC floor-type machine tool square slide block according to claim 2, characterized in that: The fixed plate (36) has a second limiting groove (363) at one end, and the bottom of the first moving rod (33) is fixedly connected to a second limiting rod (332).

4. The high-precision CNC floor-type machine tool square slide block according to claim 3, characterized in that: The second limiting rod (332) is slidably connected to the second limiting groove (363), and the bottom end of the second limiting rod (332) is fixedly connected to the second baffle (333), the diameter of the second baffle (333) is greater than the width of the second limiting groove (363).

5. The high-precision CNC floor-type machine tool square slide block according to claim 4, characterized in that: The rotating disk (31) has two first limiting grooves (312) on its surface. A first limiting rod (313) is slidably connected inside the first limiting groove (312). A first baffle (314) is fixedly connected to the top of the first limiting rod (313).

6. The high-precision CNC floor-type machine tool square slide block according to claim 1, characterized in that: The top end of the threaded rod (321) is fixedly connected to the top plate (2).

7. The high-precision CNC floor-type machine tool square slide block according to claim 1, characterized in that: The support mechanism (4) includes a housing (41), on one side of which two limiting frames (43) are fixedly connected, and a moving plate (44) is provided between the two limiting frames (43). One end of the moving plate (44) is fixedly connected to a pressing block (45).

8. The high-precision CNC floor-type machine tool square slide block according to claim 7, characterized in that: A rack (49) is fixedly connected to one side of the movable plate (44), and a half gear (48) is meshed with one side of the rack (49). The shaft end of the half gear (48) is rotatably connected to the housing (41).

9. The high-precision CNC floor-type machine tool square slide block according to claim 8, characterized in that: Two transmission rods (47) are rotatably connected to one end of the half gear (48). A cylinder (42) is fixedly installed on one side of the housing (41). A second moving rod (46) is fixedly connected to one end of the cylinder (42). One end of the second moving rod (46) is rotatably connected to four transmission rods (47).

10. The high-precision CNC floor-type machine tool square slide block according to claim 9, characterized in that: The top and bottom of the movable plate (44) are provided with guide grooves (441), and the two limiting frames (43) are slidably connected to the guide grooves (441) on opposite sides.

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