Numerical control gantry milling machine with lifting support

Abstract

The utility model discloses a numerical control gantry milling machine with a lifting support, and belongs to the technical field of numerical control gantry milling machines. A numerical control gantry milling machine with a lifting support comprises a machine body, stand columns are fixedly connected to the two sides of the machine body, a spindle box is fixedly connected to the upper ends of the stand columns, a cross beam is movably installed in front of the stand columns, a movable spindle is movably installed on the cross beam, lifting grooves are formed in the stand columns, and lead screws are movably installed in the lifting grooves. According to the numerical control gantry milling machine, the cooling box, the cooling pipe and other structures are arranged on the two sides of the cross beam, the cooling pipe penetrates through the movable block and the water pump to enable cooling liquid in the cooling box to circularly flow, and therefore the movable block is cooled, the movable block can conveniently dissipate heat in time, and the situation that lubricating oil on the lead screw is reduced due to high temperature is avoided; and the movable block is in rolling connection with the inner wall of the lifting groove through the movable roller, so that the abrasion between the movable block and the lifting groove can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of CNC gantry milling technology, and more specifically, to a CNC gantry milling machine with a lifting bracket. Background Technology

[0002] CNC gantry milling machines are high-precision machine tools used for machining medium and large mechanical parts, and are capable of machining complex three-dimensional curved surfaces and high-precision hole systems.

[0003] Chinese patent application CN217474924U discloses a CNC gantry milling machine with a lifting bracket, consisting of a milling cutter holder, a support column, a shock absorber, and an electric telescopic rod. This design uses an electric slider and electric slide rail to replace the threaded shaft, which can extend the service life and replacement cycle of the equipment and components, and improve production efficiency. However, in practical applications, the electric telescopic rod has problems with insufficient accuracy and limited load capacity. Currently, milling machine lifting still mainly uses lead screw drive, which easily generates a lot of heat. If heat is not dissipated in time, it will cause the lead screw lubricating oil to fail and accelerate wear. Therefore, this application proposes a CNC gantry milling machine with a lifting bracket to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a CNC gantry milling machine with a lifting bracket to solve the problems mentioned in the background art above:

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A CNC gantry milling machine with a lifting bracket includes a bed, columns fixedly connected to both sides of the bed, a spindle box fixedly connected to the upper end of the columns, a crossbeam movably mounted at the front of the columns, a movable spindle movably mounted on the crossbeam, a lifting groove provided on the columns, a lead screw movably mounted in the lifting groove, a movable block fixedly connected to the back of the columns, and movable rollers movably mounted on both sides of the movable block, the movable rollers being in rolling contact with the inner wall of the lifting groove;

[0007] Cooling boxes are fixedly connected to both sides of the crossbeam. A water pump is fixedly connected to the bottom of the cooling box. A cooling pipe is fixedly connected to the water pump and passes through the movable block. A V-shaped water inlet is fixedly connected to the top of the cooling box. An air inlet is opened at the front of the cooling box. A fan is fixedly connected to the cooling box in front of the air inlet.

[0008] By adopting the above technical solution, the movable block is threaded on the lead screw, and lubrication between the lead screw and the movable block is used to reduce wear. The cooling pipe passes through the movable block to circulate the liquid in the cooling box, so that the heat on the movable block can be easily dissipated in time, and the lubrication effect between the lead screw and the movable block is not affected by high temperature.

[0009] The movable block is equipped with movable rollers on both sides, which roll and connect with the inner wall of the lifting groove, thus reducing wear between the movable block and the inner wall of the lifting groove.

[0010] Preferably, the lead screw is movably mounted in the lifting groove via a bearing, the upper end of the lead screw extends upward into the spindle box, a stepper motor is fixedly connected in the spindle box, and the output shaft of the stepper motor is fixedly connected to the upper end of the lead screw.

[0011] By adopting the above technical solution, the stepper motor drives the lead screw to rotate, making it easy for the lead screw to drive the movable block to move up and down.

[0012] Preferably, the movable block is threadedly connected to the lead screw, and roller grooves are provided on both sides of the movable block. Several support rods are fixedly connected in the roller grooves, and movable rollers are rotatably connected to the support rods.

[0013] By adopting the above technical solution, the two sides of the movable block are connected to the inner wall of the lifting groove through movable rollers, thereby reducing wear.

[0014] Preferably, the upper end of the cooling pipe points to the V-shaped water inlet, the V-shaped water inlet has several drip holes, the water outlet of the water pump is connected to the cooling pipe, and the water inlet of the water pump is fixedly connected to the cooling tank through a water pumping pipe.

[0015] By adopting the above technical solution, it is easy to drip liquid downwards through several drip holes.

[0016] Preferably, an air outlet is provided at the rear of the cooling box, and a baffle plate is fixedly connected inside the cooling box, with the baffle plate located in front of the air outlet.

[0017] By adopting the above technical solution, the wind deflector prevents water droplets from being blown into the air outlet, thus avoiding waste.

[0018] Preferably, a mounting plate is fixedly connected to the cooling box, and the fan is fixedly connected to the mounting plate.

[0019] By adopting the above technical solution, the mounting plate provides support for the fan.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1) This CNC gantry milling machine uses cooling boxes and cooling pipes on both sides of the crossbeam. The cooling pipes pass through the moving block, and the water pump circulates the coolant in the cooling box to cool the moving block. This allows the moving block to dissipate heat in a timely manner, avoids high temperature from reducing the effectiveness of the lubricating oil on the lead screw, and maintains good lubrication between the lead screw and the moving block, thus reducing wear.

[0022] 2) In this CNC gantry milling machine, the movable block moves within the lifting groove via movable rollers. The movable rollers are in rolling connection with the inner wall of the lifting groove, which avoids excessive friction between the movable block and the lifting groove, thus preventing the temperature of the movable block from rising and excessive wear between the movable block and the lifting groove. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the cooling box and crossbeam of this utility model;

[0025] Figure 3 This is a schematic diagram of the lead screw of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the movable block of this utility model;

[0027] Figure 5 This is a cross-sectional schematic diagram of the cooling box of this utility model.

[0028] The following are the labels in the diagram: 1. Bed; 2. Column; 3. Crossbeam; 4. Spindle box; 5. Lifting groove; 6. Movable spindle; 7. Lead screw; 8. Bearing; 9. Stepper motor; 10. Movable block; 11. Roller groove; 12. Support rod; 13. Movable roller; 14. Cooling box; 15. V-shaped water inlet; 16. Drip hole; 17. Air inlet; 18. Air outlet; 19. Baffle plate; 20. Mounting plate; 21. Fan; 22. Water pump; 23. Cooling pipe; 24. Pumping pipe. Detailed Implementation

[0029] Example 1, please refer to Figures 1 to 4A CNC gantry milling machine with a lifting bracket includes a bed 1, columns 2 fixedly connected to both sides of the bed 1, a spindle box 4 fixedly connected to the upper end of the columns 2, a crossbeam 3 movably mounted at the front of the columns 2, a movable spindle 6 movably mounted on the crossbeam 3, a lifting groove 5 opened on the columns 2, a lead screw 7 movably mounted in the lifting groove 5, the lead screw 7 being rotatably connected in the lifting groove 5, a movable block 10 fixedly connected to the back of the columns 2, the movable block 10 being located in the lifting groove 5, movable rollers 13 movably mounted on both sides of the movable block 10, the movable rollers 13 being in rolling contact with the inner wall of the lifting groove 5, thereby reducing wear between the movable block 10 and the lifting groove 5 and preventing the movable block 10 from overheating.

[0030] The lead screw 7 is movably mounted in the lifting groove 5 via the bearing 8. The upper end of the lead screw 7 extends upward into the spindle box 4. A stepper motor 9 is fixedly connected inside the spindle box 4. The output shaft of the stepper motor 9 is fixedly connected to the upper end of the lead screw 7, so that the stepper motor 9 can easily drive the lead screw 7 to rotate.

[0031] The movable block 10 is threadedly connected to the lead screw 7. The movable block 10 has a screw hole corresponding to the position of the lead screw 7. Roller grooves 11 are opened on both sides of the movable block 10. Several support rods 12 are fixedly connected in the roller grooves 11. Movable rollers 13 are rotatably connected to the support rods 12.

[0032] The steps of using this utility model are as follows: Stepper motors 9 are started simultaneously, causing lead screws 7 to rotate at the same speed and in the same direction, driving movable blocks 10 to move up and down. Movable blocks 10 drive crossbeams 3 to move up and down, thereby raising and lowering the movable main shaft 6 on the crossbeams 3. Movable blocks 10 are threadedly connected to lead screws 7. Movable rollers 13 on both sides of movable blocks 10 are rolled on the inner wall of the lifting groove 5 to prevent sliding between movable blocks 10 and the inner wall of the lifting groove 5, thus increasing the temperature of movable blocks 10 and reducing wear between movable blocks 10 and the lifting groove 5.

[0033] Example 2, please refer to Figures 1 to 5 The difference from embodiment 1 is that a cooling box 14 is fixedly connected to both sides of the crossbeam 3. Coolant is placed inside the cooling box 14 and is located below the air inlet 17 and the air outlet 18. A water pump 22 is fixedly connected to the bottom of the cooling box 14 and a cooling pipe 23 is fixedly connected to the water pump 22. The cooling pipe 23 passes through the movable block 10 to dissipate heat from the movable block 10. A V-shaped water inlet 15 is fixedly connected to the top of the cooling box 14 and an air inlet 17 is opened at the front of the cooling box 14. A fan 21 is fixedly connected to the cooling box 14 in front of the air inlet 17. The fan 21 blows the dripping water droplets to facilitate the dissipation of heat from the coolant.

[0034] The upper end of the cooling pipe 23 points to the V-shaped water inlet 15. Several drip holes 16 are provided on the V-shaped water inlet 15 to facilitate the coolant to drip down through the drip holes 16. The outlet of the water pump 22 is connected to the cooling pipe 23. The inlet of the water pump 22 is fixedly connected to the cooling tank 14 through the water pumping pipe 24 to facilitate the extraction of coolant from the cooling tank 14 and the introduction of coolant into the cooling pipe 23, which then flows back to the cooling tank 14 through the V-shaped water inlet 15.

[0035] An air outlet 18 is provided at the rear of the cooling box 14. A baffle plate 19 is fixedly connected inside the cooling box 14. The baffle plate 19 is located in front of the air outlet 18 to prevent the wind from blowing water droplets onto the baffle plate 19, causing the water droplets to enter the air outlet 18 and resulting in waste.

[0036] A mounting plate 20 is fixedly connected to the cooling box 14, and a fan 21 is fixedly connected to the mounting plate 20.

[0037] The steps of using this utility model are as follows: Start the water pump 22 to extract coolant from the cooling tank 14 and guide it into the cooling pipe 23. The cooling pipe 23 passes through the movable block 10, thereby removing heat from the movable block 10. The upper end of the cooling pipe 23 guides the coolant into the V-shaped inlet 15, which has several drip holes 16 to allow the coolant to drip downwards. Start the fan 21, which blows the dripping water droplets through the air inlet 17. The water droplets are more easily dispersed by the fan 21, thus lowering the temperature of the recovered coolant. The water droplets are blown by the wind onto the baffle plate 19 and then flow downwards, causing them to fall back to the lower part of the cooling tank 14, facilitating the circulation of coolant by the water pump 22. This better cools the movable block 10. Lubricating oil is provided between the screw hole on the movable block 10 and the lead screw 7. By cooling the movable block 10, the high temperature is prevented from affecting the lubricating oil's effectiveness, reducing wear.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A CNC gantry milling machine with a lifting bracket, comprising a bed (1), columns (2) fixedly connected to both sides of the bed (1), a spindle box (4) fixedly connected to the upper end of the columns (2), a crossbeam (3) movably mounted at the front of the columns (2), and a movable spindle (6) movably mounted on the crossbeam (3), characterized in that: The column (2) is provided with a lifting groove (5), and a screw rod (7) is movably installed in the lifting groove (5). A movable block (10) is fixedly connected to the back of the column (2), and movable rollers (13) are movably installed on both sides of the movable block (10). The movable rollers (13) are rotatably connected to the inner wall of the lifting groove (5). Cooling boxes (14) are fixedly connected to both sides of the crossbeam (3). A water pump (22) is fixedly connected to the bottom of the cooling box (14). A cooling pipe (23) is fixedly connected to the water pump (22). The cooling pipe (23) passes through the movable block (10). A V-shaped water inlet (15) is fixedly connected to the top of the cooling box (14). An air inlet (17) is opened at the front of the cooling box (14). A fan (21) is fixedly connected to the cooling box (14) at the front of the air inlet (17).

2. A CNC gantry milling machine with a lifting bracket according to claim 1, characterized in that: The lead screw (7) is movably installed in the lifting groove (5) via the bearing (8). The upper end of the lead screw (7) extends upward into the spindle box (4). A stepper motor (9) is fixedly connected inside the spindle box (4). The output shaft of the stepper motor (9) is fixedly connected to the upper end of the lead screw (7).

3. A CNC gantry milling machine with a lifting bracket according to claim 1, characterized in that: The movable block (10) is threadedly connected to the lead screw (7). Roller grooves (11) are provided on both sides of the movable block (10). Several support rods (12) are fixedly connected in the roller grooves (11). Movable rollers (13) are rotatably connected on the support rods (12).

4. A CNC gantry milling machine with a lifting bracket according to claim 1, characterized in that: The upper end of the cooling pipe (23) points to the V-shaped water inlet (15), and the V-shaped water inlet (15) is provided with several drip holes (16). The outlet of the water pump (22) is connected to the cooling pipe (23), and the inlet of the water pump (22) is fixedly connected to the cooling box (14) through the water pump pipe (24).

5. A CNC gantry milling machine with a lifting bracket according to claim 1, characterized in that: An air outlet (18) is provided at the rear of the cooling box (14), and a baffle plate (19) is fixedly connected inside the cooling box (14). The baffle plate (19) is located in front of the air outlet (18).

6. A CNC gantry milling machine with a lifting bracket according to claim 1, characterized in that: A mounting plate (20) is fixedly connected to the cooling box (14), and the fan (21) is fixedly connected to the mounting plate (20).

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