CNC (computer numerical control) double-guide-rail linear motion module

Abstract

The utility model relates to the technical field of numerical control machine tool accessories, in particular to a CNC double-guide-rail linear motion module which comprises a double-guide-rail base and a CNC servo motor installed at one end of the double-guide-rail base, and fixing end seats are symmetrically arranged at the two ends of the double-guide-rail base. Two groups of sliding grooves which are matched with the sliding guide rails in section size and are in sliding fit with the sliding guide rails are formed in the bottom surface of the movable sliding seat, so that the movable sliding seat can smoothly slide on the double-guide-rail base, and frictional resistance is reduced; two groups of liquid injection holes which are communicated with the sliding groove and are used for injecting a lubricant are formed in the top surface of the movable sliding seat, and sealing plugs are arranged on the top surfaces of the liquid injection holes, so that the lubricant can be conveniently injected into the sliding groove when needed, the friction between the movable sliding seat and the sliding guide rail is further reduced, and the smoothness and the precision of movement are improved; the CNC servo motor installed at one end of the double-guide-rail base can accurately control the moving position and speed of the moving sliding base, and high-precision linear motion is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machine tool accessories, and specifically relates to a CNC double-rail linear motion module. Background Technique

[0002] With the rapid development of modern manufacturing industry, high-precision and high-efficiency CNC (Computer Numerical Control) equipment plays an increasingly important role in the field of machining. As one of the core components of CNC machine tools, the performance of the CNC double-rail linear motion module directly affects the machining accuracy, stability and production efficiency of the machine tool. The double-rail linear motion module realizes the high-precision linear motion of moving parts through a precise guide rail and slider structure, and is widely used in fields such as precision machining, automation equipment, and robotics. In the existing CNC double-rail linear motion module, the double rails are usually fixedly installed. Once the rails are worn or damaged, it is difficult to replace them, which affects the normal operation time and maintenance cost of the equipment. Content of the Utility Model

[0003] The purpose of the utility model is to provide a CNC double-rail linear motion module to solve the problem of inconvenient maintenance of the traditional CNC double-rail linear motion module with a fixed installation method proposed in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A CNC double-rail linear motion module includes a double-rail base and a CNC servo motor installed at one end of the double-rail base. Fixed end seats are symmetrically arranged at both ends of the double-rail base, and a moving slide is arranged between the two groups of fixed end seats;

[0006] Two detachable sliding rails are installed on the top surface of the double-rail base;

[0007] Two sliding grooves that are adapted to the cross-sectional dimensions of the sliding rails and are in sliding fit are opened on the bottom surface of the moving slide. Two liquid injection holes that are connected to the sliding grooves and are used for injecting lubricant are opened on the top surface of the moving slide, and a sealing plug is arranged on the top surface of the liquid injection hole;

[0008] A lead screw is connected to the output shaft of the CNC servo motor, and both ends of the lead screw are connected to the two groups of fixed end seats. An internal thread sleeve that is coaxial with the lead screw and is in threaded connection is embedded in the moving slide.

[0009] Preferably, the sliding rails are connected to the top surface of the double-rail base through a number of fixed bolts that are evenly and equidistantly arranged in a straight line, and the top surface of the fixed bolts is flush with the top surface of the double-rail base.

[0010] Preferably, a bearing for fixing the lead screw is embedded in the fixed end seat, and the lead screw is sleeved with the inner ring of the bearing.

[0011] Preferably, the top of each group of fixed end seats is connected to the top ends of both ends of the double guide rail base through two locking bolts.

[0012] Preferably, one end of the internal thread sleeve is coaxially connected with a fixing ring, and the fixing ring is connected to the moving slide through at least two fixing screws.

[0013] Preferably, the moving slide is provided with a plug hole adapted to the outer diameter of the internal thread sleeve and in plug-in fit.

[0014] Preferably, the cross sections of the sliding groove and the sliding guide rail are inverted isosceles trapezoids.

[0015] Preferably, the CNC servo motor is connected to one group of fixed end seats through a connecting seat.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. In this CNC double guide rail linear motion module, through two sliding grooves opened on the bottom surface of the moving slide, which are adapted to the cross-sectional dimensions of the sliding guide rail and in sliding fit, the moving slide can slide smoothly on the double guide rail base, reducing the frictional resistance; two liquid injection holes opened on the top surface of the moving slide, which are communicated with the sliding grooves and used for injecting lubricant, and the sealing plugs arranged on the top surfaces of the liquid injection holes, facilitate injecting lubricant into the sliding grooves when needed, further reducing the friction between the moving slide and the sliding guide rail, and improving the smoothness and precision of the motion; the lead screw connected to the output shaft of the CNC servo motor installed at one end of the double guide rail base, in cooperation with the internal thread sleeve coaxially and threadedly connected to the lead screw and embedded in the moving slide, can accurately control the moving position and speed of the moving slide, realizing high-precision linear motion.

[0018] 2. In this CNC double guide rail linear motion module, the top of each group of fixed end seats is connected to the top ends of both ends of the double guide rail base through two locking bolts, enhancing the connection strength between the fixed end seat and the base, making the entire transmission system more stable and reliable, and at the same time facilitating installation or disassembly.

[0019] 3. In this CNC double guide rail linear motion module, the cross sections of the sliding groove and the sliding guide rail are inverted isosceles trapezoids, enabling the slide to automatically center when sliding on the guide rail, reducing the skew phenomenon caused by installation errors or guide rail wear, and further improving the motion precision and stability. Description of the Drawings

[0020] The accompanying drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are further explained in detail, but do not constitute a limitation to the present utility model.

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic exploded cross-sectional structure diagram of the moving slide of the present utility model;

[0023] Figure 3 is a schematic cross-sectional structure diagram of the sliding guide rail of the present utility model;

[0024] 10. Double-guide rail base; 11. Sliding guide rail; 12. Fixed bolt;

[0025] 20. Fixed end seat; 21. Bearing; 22. Locking bolt;

[0026] 30. Moving slide; 31. Internal thread sleeve; 32. Fixed ring; 33. Sliding groove; 34. Liquid injection hole; 35. Sealing plug; 36. Insertion hole;

[0027] 40. CNC servo motor; 41. Connecting seat; 42. Lead screw. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model and the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. 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.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0030] A CNC double-guide rail linear motion module, as Figures 1 - 3As shown in the figure, it includes a double-rail base 10 and a CNC servo motor 40 installed at one end of the double-rail base 10. Fixed end seats 20 are symmetrically arranged at both ends of the double-rail base 10, and a moving slide 30 is arranged between the two groups of fixed end seats 20; two detachable sliding rails 11 are installed on the top surface of the double-rail base 10; two groups of sliding grooves 33 that are adapted to the cross-sectional size of the sliding rails 11 and are in sliding fit are provided on the bottom surface of the moving slide 30. Two groups of liquid injection holes 34 that are connected to the sliding grooves 33 and are used for injecting lubricant are provided on the top surface of the moving slide 30. A sealing plug 35 is provided on the top surface of the liquid injection hole 34; a lead screw 42 is connected to the output shaft of the CNC servo motor 40. The two ends of the lead screw 42 are connected to the two groups of fixed end seats 20. An internal thread sleeve 31 that is coaxial with the lead screw 42 and is threadedly connected is embedded in the moving slide 30. By providing two groups of sliding grooves 33 on the bottom surface of the moving slide 30 that are adapted to the cross-sectional size of the sliding rails 11 and are in sliding fit, the moving slide 30 can slide smoothly on the double-rail base 10, reducing the frictional resistance; the two groups of liquid injection holes 34 that are connected to the sliding grooves 33 and are used for injecting lubricant on the top surface of the moving slide 30, and the sealing plug 35 provided on the top surface of the liquid injection hole 34 facilitate injecting lubricant into the sliding grooves 33 when needed, further reducing the friction between the moving slide 30 and the sliding rails 11 and improving the smoothness and accuracy of movement; the CNC servo motor 40 installed at one end of the double-rail base 10, the lead screw 42 connected to its output shaft, and the internal thread sleeve 31 embedded in the moving slide 30 that is coaxial with the lead screw 42 and is threadedly connected can precisely control the moving position and speed of the moving slide 30, realizing high-precision linear motion.

[0031] Furthermore, the sliding rails 11 are connected to the top surface of the double-rail base 10 through a number of fixed bolts 12 that are evenly spaced and arranged in a straight line. The top surface of the fixed bolts 12 is flush with the top surface of the double-rail base 10, which not only ensures the stability of the rail installation but also avoids interference with the movement of the moving slide 30 caused by the protruding bolts, further improving the movement stability and accuracy of the module.

[0032] Specifically, a bearing 21 for fixing the lead screw 42 is embedded and installed on the fixed end seat 20. The lead screw 42 is sleeved with the inner ring of the bearing 21, effectively reducing the friction and vibration during the rotation of the lead screw, improving the transmission efficiency, and at the same time extending the service life of the lead screw and the bearing.

[0033] It should be noted that the top of each group of fixed end seats 20 is connected to the top of both ends of the double-rail base 10 through two locking bolts 22, enhancing the connection strength between the fixed end seat and the base, making the entire transmission system more stable and reliable, and at the same time facilitating installation or disassembly.

[0034] One end of the internal thread sleeve 31 is coaxially connected with a fixing ring 32. The fixing ring 32 is connected to the moving slide 30 through at least two groups of fixing screws. A plugging hole 36 which is adapted to the outer diameter of the internal thread sleeve 31 and is in plugging fit is formed on the moving slide 30, simplifying the installation process of the internal thread sleeve, ensuring a firm connection between it and the moving slide, and improving the transmission precision and stability.

[0035] It should be noted that the cross-sections of the sliding groove 33 and the sliding guide rail 11 are inverted isosceles trapezoids, enabling the slide to automatically center when sliding on the guide rail, reducing the skewing phenomenon caused by installation errors or guide rail wear, and further improving the motion precision and stability.

[0036] In addition, the CNC servo motor 40 is connected to one group of fixed end seats 20 through a connecting seat 41, making the connection between the motor and the transmission system more compact and stable, reducing the risk of loosening and damage caused by vibration or impact, and at the same time facilitating the installation, debugging and maintenance of the motor.

[0037] The working principle of this CNC double-guide linear motion module:

[0038] First, install this linear motion module at a suitable working position to ensure that the double-guide base 10 is placed stably.

[0039] Then, check whether the sliding guide rail 11 is firmly installed and whether the sliding groove 33 on the bottom surface of the moving slide 30 fits well with the sliding guide rail 11; if necessary, an appropriate amount of lubricant can be injected into the sliding groove 33 through the liquid injection hole 34, and the sealing plug 35 can be covered to reduce the friction between the moving slide 30 and the sliding guide rail 11.

[0040] Next, install the component that needs to perform linear motion on the moving slide 30.

[0041] Finally, start the CNC servo motor 40. The output shaft of the motor drives the lead screw 42 to rotate. Since the internal thread sleeve 31 on the moving slide 30 is threadedly connected to the lead screw 42, under the rotation of the lead screw 42, the moving slide 30 performs precise linear motion along the sliding guide rail 11; during the motion process, the rotation speed and rotation direction of the CNC servo motor 40 can be adjusted according to actual needs to control the motion speed and direction of the moving slide 30.

[0042] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A CNC double-guide linear motion module, comprising a double-guide base (10) and a CNC servo motor (40) installed at one end of the double-guide base (10), characterized in that: At both ends of the double-guide rail base (10), fixed end seats (20) are symmetrically arranged, and a moving slide (30) is arranged between the two groups of fixed end seats (20); On the top surface of the double-guide rail base (10), two detachable sliding guide rails (11) are installed; On the bottom surface of the moving slide (30), two sliding grooves (33) are formed, which are adapted to the cross-sectional dimensions of the sliding guide rails (11) and are in sliding fit. On the top surface of the moving slide (30), two liquid injection holes (34) are formed, which are connected to the sliding grooves (33) and are used for injecting lubricant. On the top surface of the liquid injection hole (34), a sealing plug (35) is arranged; On the output shaft of the CNC servo motor (40), a lead screw (42) is connected. The two ends of the lead screw (42) are connected to the two groups of fixed end seats (20), and an internal thread sleeve (31) that is coaxial with the lead screw (42) and is threadedly connected is embedded in the moving slide (30).

2. The CNC double-rail linear motion module according to claim 1, characterized in that: The sliding guide rail (11) is connected to the top surface of the double-guide rail base (10) by a number of fixed bolts (12) that are evenly and equidistantly arranged in a straight line. The top surface of the fixed bolt (12) is flush with the top surface of the double-guide rail base (10).

3. The CNC double-rail linear motion module according to claim 1, characterized in that: A bearing (21) for fixing the lead screw (42) is embedded and installed on the fixed end seat (20), and the lead screw (42) is sleeved with the inner ring of the bearing (21).

4. The CNC double-rail linear motion module according to claim 1, characterized in that: At the top of each group of fixed end seats (20), they are connected to the top ends of both ends of the double-guide rail base (10) by two locking bolts (22).

5. The CNC double-guide linear motion module according to claim 1, characterized in that: One end of the internal thread sleeve (31) is coaxially connected with a fixing ring (32), and the fixing ring (32) is connected to the moving slide (30) by at least two fixing screws.

6. The CNC double-guide linear motion module according to claim 1, wherein: On the moving slide (30), a plug hole (36) is formed, which is adapted to the outer diameter of the internal thread sleeve (31) and is in plug-in fit.

7. The CNC double-rail linear motion module according to claim 1, wherein: The cross-sections of the sliding groove (33) and the sliding guide rail (11) are inverted isosceles trapezoids.

8. The CNC double-rail linear motion module according to claim 1, characterized in that: The CNC servo motor (40) is connected to one of the fixed end seats (20) through a connecting seat (41).

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