Hard rail structure of numerical control gantry milling machine

Abstract

The utility model belongs to the field of hard rail structures, and particularly relates to a hard rail structure of a numerical control gantry milling machine, which comprises a base, a motor is fixedly arranged on the front side of the base, an output shaft of the motor penetrates through the base and is connected with the base through a bearing, and the tail end of the output shaft is fixedly connected with a lead screw shaft. The other end of the lead screw shaft is connected with the base through a bearing, and the outer side of a shaft body of the lead screw shaft is connected with a movable base through threads. The combination of the sliding rail and the guide rail is used for guiding a tool table of the gantry milling machine, then the sliding pin stretching out and drawing back through the spring is arranged in the sliding rail, the protruding block is arranged at the bottom of the inner side of the guide rail, and in the relative sliding process of the sliding rail and the guide rail, the sliding pin retracts inwards under the counter-acting force of the protruding block repeatedly. And the lubricating oil can be released from the oil discharge hole, so that the sliding rail and the guide rail are lubricated, and the smoothness of the tool table during transverse movement is further ensured.

Description

Technical Field

[0001] The utility model relates to the field of hard rail structures, in particular to a hard rail structure for a numerically controlled gantry milling machine. Background Art

[0002] Modern machine tools are famous for their high processing precision and high processing efficiency. Hard rail gantry CNC milling machines are widely used in the processing of various parts in metallurgical machinery, mold industry, locomotive and vehicle industry, etc. For example, the invention patent with application publication number CN110142443A proposes a hard rail gantry CNC milling machine, whose structure includes a gantry, a control bar, a milling machine tool sleeve, a prompt light board, a clamp, a milling machine base, a hard rail chip pressure guide device, and a compensation control board. The clamp is embedded in the middle of the gantry, and the milling machine tool sleeve is fixedly installed in the middle of the clamp. The prompt light board is embedded in the top positive end face of the gantry, and the bottom of the gantry is fixedly connected to the top of the milling machine base by electric welding.

[0003] However, when the hard rail structure of the existing CNC gantry milling machine is used, friction may occur, which may cause the machine to be used unsmoothly or even wear out, thus shortening the service life. Therefore, it is necessary to improve the hard rail structure. Utility Model Content

[0004] The utility model aims to provide a hard rail structure for a CNC gantry milling machine, which solves the problem that the hard rail structure of the existing CNC gantry milling machine may not be smooth in use or even wear out, thus shortening the service life due to friction.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hard rail structure of a CNC gantry milling machine, comprising a base, a motor fixedly installed on the front side of the base, an output shaft of the motor passes through the base and is connected to the base through a bearing, the end of the output shaft is fixedly connected to a screw shaft, the other end of the screw shaft is connected to the base through a bearing, the outer side of the shaft body of the screw shaft is connected to a movable seat through a thread, the upper end of the movable seat is fixedly connected to a workbench, the bottom edge of the workbench is fixedly connected to a slide rail, the upper end edge of the base is fixedly connected to a guide rail, the slide rail is slidably connected to the inner side of the guide rail, the bottom of the slide rail is connected to a sliding sleeve, the inner side of the sliding sleeve is slidably connected to a sliding pin, the inner side of the sliding pin is slidably connected to a guide rod, oil drainage holes are opened on both sides of the slide rail, and a protrusion is fixedly connected to the inner bottom of the guide rail.

[0006] Preferably, a filter screen is fixedly connected to the inner side of the slide rail, and the filter screen is fixedly connected to the guide rod. The filter screen has a filtering effect on the lubricating oil added into the slide rail.

[0007] Preferably, a spring is arranged inside the sliding pin, one end of the spring is fixedly connected to the guide rod, and the other end of the spring is fixedly connected to the inner surface of the sliding pin. By setting the spring, elastic force can be applied to the sliding pin.

[0008] Preferably, a connecting frame is fixedly connected to the outer side of the pin body of the sliding pin, a plug is fixedly connected to the end of the connecting frame, and the plug is slidably connected to the inner side of the slide rail. The setting of the plug has a blocking effect on the oil drain hole.

[0009] Preferably, a ball bearing is arranged on the side of the slide rail, and the ball bearing contacts the inner surface of the guide rail. The relative friction between the slide rail and the guide rail can be reduced by the arrangement of the ball bearing.

[0010] Preferably, the side wall of the slide rail is slidably connected with a rubber plug, and the rubber plug is made of rubber. After removing the rubber plug, it is convenient to add lubricating oil into the slide rail.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model is used for guiding the workbench of the gantry milling machine by arranging a combination of a slide rail and a guide rail, and then arranging a sliding pin that is retracted by a spring in the slide rail, and then arranging a protrusion at the inner bottom of the guide rail. In the process of relative sliding of the slide rail and the guide rail, the slide pin is repeatedly subjected to the reaction force of the protrusion and shrinks inward, thereby driving the plug to rise and fall, and the lubricating oil is released from the oil drain hole, thereby lubricating the slide rail and the guide rail, and further ensuring the smoothness of the workbench when moving horizontally.

[0013] 2. The utility model provides a filter in the guide rail, and a guide rod is provided on the filter. The guide rod is used for guiding the sliding pin when it is lifted or lowered. At the same time, the filter can be used to filter the lubricating oil added to the slide rail, thereby ensuring the lubrication effect between the slide rail and the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 For the utility model Figure 1 A front cross-sectional view of

[0016] Figure 3 For the utility model Figure 2 A magnified view of the structure of part A;

[0017] Figure 4 For the utility model Figure 1 A three-dimensional cross-sectional view of the guide rail structure.

[0018] In the figure: 1. base; 2. motor; 3. screw shaft; 4. moving seat; 5. workbench; 6. slide rail; 7. guide rail; 8. sleeve; 9. slide pin; 10. guide rod; 11. spring; 12. filter; 13. connecting frame; 14. plug; 15. ball; 16. oil drain hole; 17. bump; 18. rubber plug. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 A hard rail structure of a CNC gantry milling machine includes a base 1, a motor 2 is fixedly installed on the front of the base 1, the output shaft of the motor 2 passes through the base 1 and is connected to the base 1 through a bearing, the end of the output shaft is fixedly connected to a screw shaft 3, the other end of the screw shaft 3 is connected to the base 1 through a bearing, the outer side of the shaft body of the screw shaft 3 is connected to a moving seat 4 through a thread, the upper end of the moving seat 4 is fixedly connected to a tooling table 5, the bottom edge of the tooling table 5 is fixedly connected to a slide rail 6, the upper end edge of the base 1 is fixedly connected to a guide rail 7, and the slide rail 6 is slidably connected to the inner side of the guide rail 7.

[0021] See also Figure 3 The bottom of the slide rail 6 is connected with a sleeve 8, the inner side of the sleeve 8 is slidably connected with a slide pin 9, the inner side of the slide pin 9 is slidably connected with a guide rod 10, both sides of the slide rail 6 are provided with oil drain holes 16, and the inner bottom of the guide rail 7 is fixedly connected with a bump 17. The inner side of the slide rail 6 is fixedly connected with a filter screen 12, and the filter screen 12 is fixedly connected to the guide rod 10. The setting of the filter screen 12 has a filtering effect on the lubricating oil added to the slide rail 6. A spring 11 is arranged inside the slide pin 9, one end of the spring 11 is fixedly connected to the guide rod 10, and the other end of the spring 11 is fixedly connected to the inner surface of the slide pin 9. The setting of the spring 11 can act on the slide pin 9 with elastic force.

[0022] See also Figure 3The outer side of the pin body of the sliding pin 9 is fixedly connected with a connecting frame 13, and the end of the connecting frame 13 is fixedly connected with a plug 14, and the plug 14 is slidably connected to the inner side of the slide rail 6. The setting of the plug 14 has a blocking effect on the oil drain hole 16. The side of the slide rail 6 is provided with a ball 15, and the ball 15 is in contact with the inner surface of the guide rail 7. The setting of the ball 15 can reduce the relative friction between the slide rail 6 and the guide rail 7. The side wall of the slide rail 6 is slidably connected with a rubber plug 18, and the rubber plug 18 is made of rubber. After removing the rubber plug 18, it is convenient to add lubricating oil to the slide rail 6.

[0023] The specific implementation process of the utility model is as follows: when in use, the motor 2 drives the screw shaft 3 to rotate, and the moving seat 4 moves horizontally through the relative threaded movement between the screw shaft 3, and then the workbench 5 on the moving seat 4 moves under the guidance of the slide rail 6 and the guide rail 7, and in the process of relative sliding between the slide rail 6 and the guide rail 7, the sliding pin 9 is repeatedly subjected to the reaction force of the protrusion 17 and shrinks inward, and then drives the plug 14 to rise and fall through the connecting frame 13, and the lubricating oil will be released from the oil drain hole 16 during this interval, so as to lubricate the slide rail 6 and the guide rail 7, and further ensure the smoothness of the workbench 5 when moving horizontally.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hard rail structure for a CNC gantry milling machine, comprising a base (1), characterized in that: A motor (2) is fixedly mounted on the front of the base (1); an output shaft of the motor (2) passes through the base (1) and is connected to the base (1) via a bearing; a lead screw shaft (3) is fixedly connected to the end of the output shaft; the other end of the lead screw shaft (3) is connected to the base (1) via a bearing; a movable seat (4) is connected to the outer side of the shaft body of the lead screw shaft (3) via a thread; a tooling table (5) is fixedly connected to the upper end of the movable seat (4); and a bottom edge of the tooling table (5) is A slide rail (6) is fixedly connected, a guide rail (7) is fixedly connected to the upper edge of the base (1), the slide rail (6) is slidably connected to the inner side of the guide rail (7), the bottom of the slide rail (6) is connected to a slide sleeve (8), the inner side of the slide sleeve (8) is slidably connected to a slide pin (9), the interior of the slide pin (9) is slidably connected to a guide rod (10), oil drain holes (16) are provided on both sides of the slide rail (6), and a protrusion (17) is fixedly connected to the inner bottom of the guide rail (7).

2. The hard rail structure of a CNC gantry milling machine according to claim 1, characterized in that: A filter screen (12) is fixedly connected to the inner side of the slide rail (6), and the filter screen (12) is fixedly connected to the guide rod (10).

3. The hard rail structure of a CNC gantry milling machine according to claim 1, characterized in that: A spring (11) is arranged inside the sliding pin (9), one end of the spring (11) is fixedly connected to the guide rod (10), and the other end of the spring (11) is fixedly connected to the inner surface of the sliding pin (9).

4. The hard rail structure of a CNC gantry milling machine according to claim 1, characterized in that: A connecting frame (13) is fixedly connected to the outer side of the pin body of the sliding pin (9), a plug (14) is fixedly connected to the end of the connecting frame (13), and the plug (14) is slidably connected to the inner side of the sliding rail (6).

5. The hard rail structure of a CNC gantry milling machine according to claim 1, characterized in that: A ball bearing (15) is arranged on the side of the slide rail (6), and the ball bearing (15) is in contact with the inner surface of the guide rail (7).

6. The hard rail structure of a CNC gantry milling machine according to claim 1, characterized in that: The side wall of the slide rail (6) is slidably connected with a rubber plug (18), and the rubber plug (18) is made of rubber.

Images