High-rigidity numerical control forming milling machine and mounting method

Abstract

The invention relates to a high-rigidity numerical control forming milling machine and an installation method, and relates to the technical field of numerical control milling machines, the high-rigidity numerical control forming milling machine comprises a workbench, a numerical control system, a main shaft machining module, a clamping system and a Z-axis moving module; the Z-axis moving module comprises two sets of stand columns, linear rails and sliding blocks, the two sets of stand columns are arranged on the workbench at intervals, and the spindle machining module is connected with the stand columns through the two sets of linear rails and the sliding blocks which are connected in a matched mode so that the spindle machining module can slide in the Z direction; the two sets of stand columns are connected through a pre-tightening assembly, the pre-tightening assembly can adjust the distance between the two stand columns so that the balls on the sliding blocks can be attached to the rail faces on the linear rails, the main shaft machining module and the stand columns are connected through fixing assemblies, and the fixing assemblies can fix the main shaft machining module so that the main shaft machining module can be located at the machining height. The milling machine has the advantages that the capacity of resisting vertical load deformation of equipment is improved, and the rigidity of the whole milling machine is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of CNC milling machines, and particularly to a high-rigidity CNC profiling milling machine and an installation method thereof. Background Art

[0002] A CNC milling machine is a high-precision automated processing device controlled by a computer program and is widely used in various fields of manufacturing. Its core advantage lies in its ability to efficiently and accurately complete the cutting processing of complex parts, especially suitable for the production of products with multiple varieties, small batches, or high precision.

[0003] In the existing technology, a processing module of a milling machine is installed on a column by a side-hanging method. The processing module and the column are guided and slid by the cooperation of a linear guide and a slider. The processing module is driven by a lead screw. Since the gravity of the processing module cannot directly press down the slider to fit with the linear guide, the gap between the slider and the linear guide increases, resulting in a reduction in the rigidity of the milling machine. Summary of the Invention

[0004] In order to improve the problem that the gravity of the processing module cannot directly press down the slider to fit with the linear guide, resulting in an increase in the gap between the slider and the linear guide and a reduction in the rigidity of the milling machine, this application provides a high-rigidity CNC profiling milling machine and an installation method thereof.

[0005] On the one hand, a high-rigidity CNC profiling milling machine provided by this application adopts the following technical solution: A high-rigidity CNC profiling milling machine includes a workbench, a numerical control system, a spindle processing module, a clamping system, and a Z-axis moving module. The workpiece is installed on the clamping system, and the clamping system can drive the workpiece to move in the X and Y directions; the Z-axis moving module includes two groups of columns, linear guides, and sliders. The two groups of columns are arranged at intervals on the workbench, and a space for the spindle processing module to slide is formed between the two groups of columns. The spindle processing module is connected to the columns through two groups of cooperating linear guides and the sliders to enable the Z-direction sliding of the spindle processing module; the two groups of columns are connected by a pre-tightening component, and the pre-tightening component can adjust the distance between the two columns to make the balls on the slider fit with the track surface on the linear guide. The spindle processing module and the columns are connected by a fixing component, and the fixing component can fix the spindle processing module to make the spindle processing module located at the processing height.

[0006] By adopting the above technical solution, the spindle machining module can achieve stable Z-direction sliding between two sets of columns. Meanwhile, the pre-tightening assembly adjusts the distance between the two columns, making the balls on the slider closely fit the linear guide rail surface, thereby significantly reducing the gap between the two. This design enhances the overall rigidity of the machine tool, reduces vibration transmission caused by external impact or cutting force, and improves the stability of the machining process and the quality of the machined surface. In addition, the fixing assembly ensures the stability of the spindle machining module after reaching the specified machining height, further enhancing the rigidity, machining accuracy and reliability of the milling machine.

[0007] Preferably, the pre-tightening assembly includes a cross beam and adjusting bolts. The cross beam is fixedly connected to one set of the columns and connected to the other set of the columns through the adjusting bolts. The adjusting bolts are rotatably connected to the columns and inserted into the threaded holes on the columns to be able to adjust the distance between the two sets of the columns by rotating the adjusting bolts.

[0008] By adopting the above technical solution, the cross beam is fixedly connected to one set of columns, and the other set of columns is connected through adjusting bolts. The adjusting bolts are rotatably connected to the columns and the distance is adjusted by being inserted into the threaded holes. This design can accurately adjust the distance between the two sets of columns, thereby ensuring the close fit of the slider and the linear guide, and reducing the gap between the two. Finally, the effect of enhancing the rigidity of the milling machine and reducing vibration transmission is achieved, and the quality and stability of the machined surface are improved.

[0009] Preferably, the pre-tightening assembly further includes a pre-tightening tension bolt. The tension bolt passes through the two sets of columns and is threadedly connected to the two sets of columns to be able to adjust the distance between the two sets of the columns by rotating the tension bolt.

[0010] By adopting the above technical solution, the pre-tightening tension bolt passes through the two sets of columns and is threadedly connected to them, which can effectively adjust the distance between the two sets of columns. This design works in coordination with the cross beam and the adjusting bolts, further enhancing the precise control ability of the relative position between the columns. Due to the bi-directional force application characteristic of the tension bolt, the two side columns can be evenly stressed and move closer inward, thereby ensuring a closer fit between the slider and the linear guide, significantly reducing the gap between the two. This improvement not only increases the effective contact area of the balls between the slider and the linear guide, but also greatly enhances the anti-load deformation performance of the entire system. Finally, the obvious improvement of the overall rigidity of the milling machine is achieved, the vibration transmission problem caused by external impact or cutting force is reduced, and the quality of the machined surface is greatly improved.

[0011] Preferably, the spindle machining module is arranged between the cross beam and the tension bolt.

[0012] By adopting the above technical solution, the spindle machining module is arranged between the crossbeam and the tie bolts, which can make full use of the structural space and ensure the stability of the spindle machining module during the Z-direction sliding process. This position design makes the pre-tightening force distribution more uniform, effectively reduces the gap between the linear guide and the slider, and improves the reliability of the sliding guide.

[0013] Preferably, the fixing assembly includes a fixing part, a connecting part and a fixing bolt. The fixing part is fixedly arranged on the column, the connecting part is fixedly arranged on the spindle machining module, and the fixing bolt can pass through the fixing part and the connecting part to fix the spindle machining module.

[0014] By adopting the above technical solution, the fixing part and the connecting part are respectively fixed on the column and the spindle machining module, and the two are connected by the fixing bolt, so as to realize the height positioning and fixing of the spindle machining module. This design ensures the stability and reliability of the spindle machining module during the machining process, avoids position deviation caused by vibration or other external factors, and improves the machining accuracy and efficiency.

[0015] Preferably, a strip-shaped hole is formed in the fixing part along the Z direction. The fixing bolt passes through the strip-shaped hole and is inserted into a threaded hole on the connecting part. The spindle machining module can drive the fixing bolt to slide along the strip-shaped hole, and the fixing bolt can be tightened against the fixing part to fix the spindle machining module.

[0016] By adopting the above technical solution, the setting of the strip-shaped hole allows the fixing bolt to have a certain range of movement in the Z direction, thus facilitating the adjustment of the position of the spindle machining module. When the spindle machining module reaches the specified height, the fixing bolt can be accurately locked by tightening against the fixing part, ensuring that the spindle machining module is stably fixed at the required machining height and improving the rigidity and positioning accuracy during the machining process.

[0017] Preferably, a proximity switch is arranged on the connecting part, and the sensing head of the proximity switch faces the end of the fixing bolt.

[0018] By adopting the above technical solution, when the spindle machining module reaches the specified height, the proximity switch can detect the position of the fixing bolt to ensure that the fixing bolt is accurately tightened at the predetermined position, thereby improving the accuracy and reliability of the fixing of the spindle machining module.

[0019] Preferably, lubricating cavities are provided at both ends of each slider, and lubricating sponges that are in contact with the linear guide are provided in each lubricating cavity. Lubricating oil is filled in the lubricating sponges. A rack is provided on the linear guide along the Z direction, and a gear that meshes with the rack is rotatably connected to the slider. A pressing block is provided in each lubricating cavity of the slider. The gear is connected to the two pressing blocks through a transmission member. The gear can drive the pressing block at the front end of the slider to squeeze the lubricating sponge through the transmission member, so as to squeeze the lubricating oil and coat it on the track surface of the linear guide.

[0020] By adopting the above technical solution, lubricating sponges are provided in the lubricating cavities at both ends of the slider and lubricating oil is filled in them. The rack on the linear guide meshes with the gear on the slider for transmission, and in combination with the linkage of the transmission member between the gear and the pressing block. During the movement of the slider along the Z direction, the gear rotates and drives the front pressing block to periodically squeeze the lubricating sponge through the transmission member, so as to evenly coat the lubricating oil on the track surface of the linear guide. On the one hand, the lubricating sponge evenly adsorbs the lubricating oil through capillary action, and the release amount is controllable during extrusion, avoiding local excess or deficiency caused by direct application. On the other hand, when the pressing plate squeezes the lubricating sponge, it generates a squeezing force on the lubricating oil, which can squeeze the lubricating oil into the gap between the slider and the linear guide, facilitating the lubrication between the linear guide and the slider.

[0021] Preferably, the transmission member includes two connecting rods, a base plate and a push plate. The connecting rods correspond to the pressing blocks one by one and are fixedly connected. The connecting rods are slidably arranged on the slider. A stop block is provided on each connecting rod. Each connecting rod is connected to the slider through a return spring, and the return spring can push the pressing block to reset. The two base plates are fixedly arranged on the two end faces of the gear. The push plates correspond to the base plates one by one and are rotatably connected through a rotating shaft. The push plates on the two base plates face in opposite directions. A supporting surface is provided on the base plate, and the supporting surface can limit the rotation of the push plate so that the push plate can push the stop block to slide. The rotating shaft is connected to the base plate through a return torsion spring, and the return torsion spring can drive the push plate to fit with the supporting surface.

[0022] By adopting the above technical solution, when the main shaft machining module slides along the Z axis, the rack drives the gear to rotate. At this time, the return torsion spring drives the push plate to fit with the supporting surface on the base plate. The gear drives the push plates on both sides to rotate. One of the push plates pushes the stop block to slide, and the stop block pulls the pressing block at the front end of the slider to squeeze the lubricating sponge. The other stop block is blocked by the other stop block and rotates around the rotating shaft, so that the pressing block corresponding to this stop block remains stationary. This design enables the lubricating oil to enter between the slider and the linear guide from the front end of the slider for lubrication regardless of the sliding direction of the linear guide, reducing the waste of hydraulic oil dripping caused by the pressing block at the rear end of the slider squeezing the lubricating sponge and improving the lubrication utilization rate of the lubricating oil.

[0023] On the other hand, an installation method for a high-rigidity numerically controlled profiling milling machine provided by the present application adopts the following technical solutions: An installation method for a high-rigidity numerically controlled profiling milling machine includes the following steps: S1. Assemble the spindle machining module and install the clamping system on the workbench; S2. Install the spindle machining module on two columns through a linear guide and slider structure, and then install the pre-tightening assembly on the two columns; S3. Place the two columns on the workbench, and then adjust the distance between the two columns to the required distance through the pre-tightening assembly; S4. Fix and install the columns on the workbench; S5. Adjust the spindle machining module to a specified height, and then fix the spindle machining module through the fixing assembly; S6. Complete the installation and debugging of the numerical control system.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The pre-tightening assembly adjusts the distance between the two columns to make the slider closely fit with the linear guide, significantly reducing the gap between the two, increasing the effective contact area between the balls and the raceways, thereby greatly improving the ability of the equipment to resist vertical load deformation; 2. The fixing assembly can firmly fix the spindle machining module at a specific height, effectively preventing displacement caused by vibration or external force during the machining process, improving the stability of the machining module during the milling of workpieces, and further enhancing the rigidity of the entire system; 3. The gear drives the pressing block at the front end of the slider to squeeze the lubricating sponge, and the pressing block at the rear end of the slider remains stationary, so that no matter which direction the linear guide slides, the lubricating oil enters between the slider and the linear guide from the front end of the slider for lubrication, reducing the waste of hydraulic oil dripping caused by the pressing block at the rear end of the slider squeezing the lubricating sponge, and improving the lubrication utilization rate of the lubricating oil. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of a high-rigidity numerically controlled profiling milling machine according to Embodiment 1 of the present application.

[0026] Figure 2 is a schematic structural diagram of the milling machine according to Embodiment 1 of the present application from another perspective.

[0027] Figure 3 is Figure 2 an enlarged view of part A in

[0028] Figure 4 is Figure 2 an enlarged view of part B in

[0029] Figure 5 is a schematic structural diagram of the spindle machining module according to Embodiment 2 of the present application.

[0030] Figure 6 is Figure 5Enlarged view of part C.

[0031] Figure 7 It is a schematic structural diagram of the transmission part in Embodiment 2 of the present application.

[0032] Figure 8 It is a top view of the slider in Embodiment 2 of the present application.

[0033] Figure 9 It is along Figure 8 The sectional view taken along D-D in it.

[0034] Figure 10 It is Figure 7 The enlarged view of part E in it.

[0035] Explanation of reference numerals: 1, workbench; 2, spindle processing module; 3, clamping system; 4, Z-axis movement module; 41, column; 42, linear guide; 43, slider; 5, pre-tightening component; 51, cross beam; 52, adjusting bolt; 53, tie rod; 54, support block; 6, fixing component; 61, fixing part; 62, connecting part; 63, fixing bolt; 64, strip hole; 65, friction pad; 66, proximity switch; 71, lubrication cavity; 72, lubrication sponge; 73, rack; 74, gear; 75, pressing block; 76, transmission part; 761, connecting rod; 762, base plate; 763, push plate; 764, stop block; 765, return spring; 766, rotating shaft; 767, support surface; 768, return torsion spring; 77, support slide. Detailed implementation manners

[0036] The following further elaborates on the present application in conjunction with the attached Figures 1 - 10 Drawings.

[0037] Embodiment 1 of the present application discloses a high-rigidity CNC profiling milling machine.

[0038] Embodiment 1 Referring to Figure 1 , a high-rigidity CNC profiling milling machine includes a workbench 1, a numerical control system, a spindle processing module 2, a clamping system 3, and a Z-axis movement module 4. The workpiece is installed on the clamping system 3, and the clamping system 3 drives the workpiece to move along the X-axis and Y-axis through a motor-screw mechanism. The spindle processing module 2 includes a motor drive mechanism and a milling cutter, and the motor drive mechanism drives the milling cutter to rotate to mill the surface of the workpiece.

[0039] Referring to Figure 2 , Figure 3, the Z-axis movement module 4 includes two sets of columns 41, linear guides 42 and sliders 43. The two sets of columns 41 are arranged at intervals on the workbench 1, and a space for the spindle machining module 2 to slide is formed between the two sets of columns 41. The spindle machining module 2 is connected to the columns 41 through two sets of cooperating linear guides 42 and sliders 43. In this embodiment, the slider 43 is fixedly installed on the column 41, and the linear guide 42 is fixedly installed on the spindle machining module 2 along the Z direction. A motor screw mechanism connected to the spindle machining module 2 is provided on one of the columns 41 to enable the spindle machining module 2 to slide along the Z direction.

[0040] Referring to Figure 2 , the two sets of columns 41 are connected by a pre-tightening assembly 5, and the distance between the two columns 41 is adjusted by the pre-tightening assembly 5 so that the balls on the slider 43 are in contact with the track surface on the linear guide 42. The spindle machining module 2 is connected to the column 41 through a fixing assembly 6. The fixing assembly 6 can fix the spindle machining module 2 so that the spindle machining module 2 is at the machining height. Fix the spindle machining module 2 at the machining height, and drive the workpiece to slide through the clamping system 3 to realize milling of the workpiece surface.

[0041] When installing the milling machine, first assemble the spindle machining module 2 and install the clamping system 3 on the workbench 1, then install the spindle machining module 2 on the two columns 41 through the structure of the linear guide 42 and the slider 43, then install the pre-tightening assembly 5 on the two columns 41, place the two columns 41 on the workbench 1, then adjust the distance between the two columns 41 to the required distance through the pre-tightening assembly 5, and then fix the two columns 41 on the workbench 1 through bolts, then adjust the spindle machining module 2 to the specified height, and then fix the spindle machining module 2 through the fixing assembly 6. Finally, complete the installation and debugging of the numerical control system.

[0042] The spindle machining module 2 can achieve stable Z-direction sliding between the two sets of columns 41. At the same time, the pre-tightening assembly 5 adjusts the distance between the two columns 41, so that the balls on the slider 43 are in close contact with the track surface of the linear guide 42, thereby significantly reducing the gap between the two. This design enhances the overall rigidity of the machine tool, reduces the vibration transmission caused by external impact or cutting force, improves the stability of the machining process and the quality of the machined surface. In addition, the fixing assembly 6 ensures the stability of the spindle machining module 2 after reaching the specified machining height, further improving the rigidity, machining accuracy and reliability of the milling machine.

[0043] Referring to Figure 2, in this embodiment, the pre-tightening assembly 5 includes a cross beam 51, an adjusting bolt 52 and a tie rod 53. The cross beam 51 is arranged at the top of the column 41 and above the main shaft machining module 2, and the tie rod 53 is arranged below the main shaft machining module 2. The main shaft machining module 2 is arranged between the cross beam 51 and the tie rod 53 to ensure the stability of the main shaft machining module 2 during the Z-direction sliding process, make the pre-tightening force distribution more uniform, effectively reduce the gap between the linear guide 42 and the slider 43, and improve the reliability of the sliding guide.

[0044] Refer to Figure 2 , the number of the cross beams 51 is two. One end of the cross beam 51 is fixedly connected to a column 41 by bolts. The adjusting bolt 52 is arranged on the other column 41. A supporting block 54 opposite to the cross beam 51 is fixedly installed at the top of the column 41. The adjusting bolt 52 rotatably passes through the supporting block 54, and the end of the adjusting bolt 52 passing through the supporting block 54 is threadedly inserted into the threaded hole at the end of the cross beam 51. The distance between the two groups of columns 41 is adjusted by rotating the adjusting bolt 52.

[0045] Refer to Figure 2 , the tie rod 53 passes through the two groups of columns 41 and is threadedly connected to the two groups of columns 41. The distance between the two groups of columns 41 is adjusted by rotating the tie rod 53. Due to the bi-directional force application characteristic of the tie rod 53, the two side columns 41 can be evenly stressed and move closer to each other, so as to ensure that the slider 43 and the linear guide 42 are more closely attached, and significantly reduce the gap between the two.

[0046] When adjusting the distance between the two columns 41, the adjusting bolt 52 and the tie rod 53 are screwed. The adjusting bolt 52 and the tie rod 53 pull one column 41 closer to the other column 41, enhancing the synergistic effect of the cross beam 51 and the adjusting bolt 52, and further enhancing the precise control ability of the relative position between the columns 41. The synergistic effect of the adjusting bolt 52 and the tie rod 53 increases the effective contact area of the balls between the slider 43 and the linear guide 42, and also greatly improves the anti-load deformation performance of the whole system. Finally, the overall rigidity of the milling machine is significantly improved, the vibration transmission problem caused by external impact or cutting force is reduced, and the quality of the machining surface is greatly improved.

[0047] Refer to Figure 2 , Figure 4, in this embodiment, there are two sets of fixing components 6. The spindle machining module 2 is fixed to the column 41 through the two sets of fixing components 6 respectively. Each set of fixing components 6 includes a fixing part 61, a connecting part 62 and a fixing bolt 63. The fixing part 61 is fixedly arranged on the column 41, the connecting part 62 is fixedly arranged on the spindle machining module 2, the fixing part 61 and the connecting part 62 are arranged opposite to each other. The fixing part 61 is provided with a strip-shaped hole 64 on the side facing the connecting part 62. The strip-shaped hole 64 is arranged along the Z direction. The fixing bolt 63 is arranged in the strip-shaped hole 64. One end of the fixing bolt 63 passing through the strip-shaped hole 64 passes through a threaded hole opened on the connecting part 62. A friction pad 65 is sleeved on the fixing bolt 63. The friction pad 65 is located between the screw head of the fixing bolt 63 and the fixing part 61. The screw head of the fixing bolt 63 presses the friction pad 65 against the fixing part 61 to increase the friction force between the fixing bolt 63 and the fixing part 61.

[0048] When the spindle machining module 2 slides along the Z direction, the fixing bolt 63 is in a loose state and slides along the strip-shaped hole 64, which is convenient for the spindle machining module 2 to adjust its position. When the spindle machining module 2 slides to the machining height, the fixing bolt 63 can be precisely locked by abutting against the fixing part 61, ensuring that the spindle machining module 2 is stably fixed at the required machining height, ensuring the stability and reliability of the spindle machining module 2 during the machining process, avoiding position deviation caused by vibration or other external factors, and improving the machining accuracy and efficiency.

[0049] Refer to Figure 2 , Figure 4 , a proximity switch 66 is fixedly arranged on each connecting part 62. The sensing head of the proximity switch 66 faces the end of the fixing bolt 63. When the spindle machining module 2 reaches the specified height, the proximity switch 66 can detect the approaching distance of the fixing bolt 63, ensuring that the pre-tightening force of the fixing bolt 63 against the fixing part 61 meets the design requirements, thereby improving the accuracy and reliability of the fixation of the spindle machining module 2.

[0050] The implementation principle of Embodiment 1 is: the spindle machining module 2 can achieve stable Z-direction sliding between the two columns 41. At the same time, by rotating the adjusting bolt 52 and the tension rod 53 to adjust the distance between the two columns 41, the balls on the slider 43 are closely attached to the track surface of the linear guide 42, thereby significantly reducing the gap between the two. This design enhances the overall rigidity of the machine tool, reduces the vibration transmission caused by external impact or cutting force, and improves the stability of the machining process and the quality of the machining surface. In addition, the frictional fixation of the fixing bolt 63 against the fixing part 61 ensures the stability of the spindle machining module 2 after reaching the specified machining height, further improving the rigidity, machining accuracy and reliability of the milling machine.

[0051] Embodiment 2 Refer to Figure 5 , Figure 6, the difference between this embodiment and Embodiment 1 is that a rack 73 arranged along the Z direction is fixedly provided on the main shaft processing module 2. One side of the slider 43 is rotationally connected to a gear 74 through a gear shaft, and the gear 74 meshes with the rack 73.

[0052] Refer to Figure 7 , Figure 8 and Figure 9 , lubricating cavities 71 are provided at both ends of each slider 43. The cross-sectional shape of the lubricating cavity 71 is an enlargement of the cross-sectional shape of the linear guide 42. Lubricating sponges 72 that fit each track surface of the linear guide 42 are provided in each lubricating cavity 71. The lubricating sponges 72 are connected to an external lubricating oil supply system, so that the lubricating sponges 72 are filled with lubricating oil. A pressing block 75 is provided in each lubricating cavity 71 of the slider 43. The pressing block 75 has the same shape as the lubricating sponge 72. The gear 74 is connected to the two pressing blocks 75 through a transmission member 76. The gear 74 drives the pressing block 75 located at the front end of the slider 43 to squeeze the lubricating sponge 72 through the transmission member 76, squeezing the lubricating oil between the slider 43 and the linear guide 42 and coating it on the track surface of the linear guide 42. Lubricating sponges 72 are provided in the lubricating cavities 71 at both ends of the slider 43 and filled with lubricating oil. The lubricating sponges 72 uniformly adsorb the lubricating oil through capillary action, and the release amount is controllable during extrusion, avoiding local excess or deficiency caused by direct application.

[0053] Refer to Figure 7 , Figure 10 , the transmission member 76 in this embodiment includes two connecting rods 761, a base plate 762, and a push plate 763. The connecting rods 761 correspond to the pressing blocks 75 one by one. The connecting rod 761 has a structure with three mutually perpendicular segments. One end of the connecting rod 761 is inserted into the lubricating cavity 71 and fixedly connected to the pressing block 75, and the other end extends to the position of the gear 74. The free ends of the two connecting rods 761 are respectively located on both sides of the gear 74. A support sliding seat 77 corresponding to the connecting rod 761 one by one is fixedly provided on the side of the slider 43. The connecting rod 761 slidably passes through the support sliding seat 77, so that the support sliding seat 77 supports the sliding of the connecting rod 761. A stop block 764 facing the gear 74 is provided on the free end of each connecting rod 761. Each connecting rod 761 is connected to the slider 43 through a return spring 765. The return spring 765 is sleeved on the connecting rod 761. One end of the return spring 765 is fixedly connected to the connecting rod 761, and the other end is fixedly connected to the connecting rod 761. The return spring 765 pushes the pressing block 75 to reset, so that the pressing block 75 releases the extrusion of the lubricating sponge 72.

[0054] Refer to Figure 7 , Figure 10, two substrates 762 are fixedly arranged on the two end faces of the gear 74. The push plates 763 correspond to the substrates 762 one by one and are rotationally connected through the rotating shafts 766. The axis of the rotating shaft 766 is parallel to the axis of the gear 74. The push plates 763 on the two substrates 762 face in opposite directions. The substrates 762 are provided with support surfaces 767. The support surfaces 767 are located outside the rotating shafts 766. The support surfaces 767 are in contact with the push plates 763, so that the push plates 763 can push the stoppers 764 to slide. The rotating shafts 766 and the substrates 762 are connected through return torsion springs 768. One end of the return torsion spring 768 is fixedly connected to the rotating shaft 766, and the other end is fixedly connected to the substrate 762, so that the return torsion spring 768 drives the push plates 763 to be in contact with the support surfaces 767. When the gear 74 drives the push plates 763 to be in contact with the stoppers 764, the push plates 763 located between the baffle and the substrates 762 push the stoppers 764 to slide, and the push plates 763 located on the same side of the baffle and the substrates 762 rotate around the rotating shafts 766, so that the stoppers 764 remain stationary.

[0055] When the spindle machining module 2 slides along the Z direction, the rack 73 drives the gear 74 to rotate. At this time, the return torsion spring 768 drives the push plates 763 to be in contact with the support surfaces 767 on the substrates 762. The gear 74 drives the push plates 763 on both sides to rotate. One of the push plates 763 pushes the stopper 764 to slide, and the stopper 764 pulls the pressing block 75 at the front end of the slider 43 to squeeze the lubricating sponge 72. When the pressing plate squeezes the lubricating sponge 72, an extrusion force is generated on the lubricating oil, which can squeeze the lubricating oil into the gap between the slider 43 and the linear guide 42, facilitating the lubrication between the linear guide 42 and the slider 43.

[0056] The other push plate 763 is blocked by the other stopper 764 and rotates around the rotating shaft 766, so that the pressing block 75 corresponding to the stopper 764 remains stationary, so that no matter which direction the linear guide 42 slides, the lubricating oil enters between the slider 43 and the linear guide 42 from the front end of the slider 43 for lubrication, reducing the waste of hydraulic oil dripping caused by the pressing block 75 at the rear end of the slider 43 squeezing the lubricating sponge 72 and improving the lubrication utilization rate of the lubricating oil.

[0057] The implementation principle of Embodiment 2 is that the gear 74 drives the pressing block 75 at the front end of the slider 43 to squeeze the lubricating sponge 72, and the pressing block 75 at the rear end of the slider 43 remains stationary, so that no matter which direction the linear guide 42 slides, the lubricating oil enters between the slider 43 and the linear guide 42 from the front end of the slider 43 for lubrication, reducing the waste of hydraulic oil dripping caused by the pressing block 75 at the rear end of the slider 43 squeezing the lubricating sponge 72 and improving the lubrication utilization rate of the lubricating oil.

[0058] An installation method of a high-rigidity numerical control forming milling machine includes the following steps: S1. Assemble the spindle machining module 2 and install the clamping system 3 on the workbench 1.

[0059] S2. Mount the spindle machining module 2 onto two columns 41 through the linear guide 42 and slider 43 structure. The linear guide 42 is fixedly mounted on the spindle machining module 2, and the slider 43 is fixedly mounted on the column 41. Then pass the linear guide 42 through the slider 43, and fixedly connect the crossbeam 51 to one column 41 through bolts. Insert the rotary adjusting bolt 52 into the threaded hole inside the crossbeam 51, and pass the tension rod 53 through the two columns 41 to complete the initial assembly of the two columns 41.

[0060] S3. Place the two columns 41 on the workbench 1, and then rotate the adjusting bolt 52 and the tension rod 53 to adjust the distance between the two columns 41 to the required distance, so that the pre-tightening force between the slider 43 and the linear guide 42 meets the design requirements.

[0061] S4. Fix the two columns 41 to the workbench 1 through bolts.

[0062] S5. Adjust the spindle machining module 2 to the specified height through the motor screw mechanism, and then rotate the fixing bolt 63. The fixing bolt 63 presses the friction plate against the fixing part 61, and use the proximity switch 66 to judge whether the fixing bolt 63 is screwed in place to complete the fixation of the spindle machining module 2.

[0063] S6. Complete the installation and debugging of the numerical control system.

[0064] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A high rigidity CNC forming milling machine, characterized in that: It comprises a workbench (1), a numerical control system, a spindle processing module (2), a clamping system (3) and a Z-axis moving module (4); a workpiece is mounted on the clamping system (3); and the clamping system (3) can drive the workpiece to move along the X direction and the Y direction; The Z-axis moving module (4) comprises two groups of columns (41), linear rails (42) and sliders (43); the two groups of columns (41) are arranged on the workbench (1) at intervals, and a space for the spindle processing module (2) to slide is formed between the two groups of columns (41); the spindle processing module (2) is connected to the columns (41) via two groups of matched linear rails (42) and the sliders (43), so that the spindle processing module (2) can slide in the Z direction; The two groups of columns (41) are connected via a pre-tightening assembly (5), and the pre-tightening assembly (5) is capable of adjusting the distance between the two columns (41) so that the ball bearings on the slider (43) fit the track surface on the linear rail (42). The spindle processing module (2) and the columns (41) are connected via a fixing assembly (6), and the fixing assembly (6) is capable of fixing the spindle processing module (2) so that the spindle processing module (2) is located at a processing height.

2. The high rigidity CNC forming milling machine according to claim 1, characterized in that: The preload assembly (5) comprises a crossbeam (51) and an adjusting bolt (52); the crossbeam (51) is fixedly connected to one group of the columns (41), and is connected to another group of the columns (41) via the adjusting bolt (52); the adjusting bolt (52) is rotatably connected to the columns (41) and inserted into a threaded hole on the columns (41), so that the distance between the two groups of columns (41) can be adjusted by rotating the adjusting bolt (52).

3. The high rigidity CNC forming milling machine according to claim 2, characterized in that: The pre-tightening assembly (5) also includes a pre-tightening tensioning screw (53), which is passed through the two groups of columns (41) and is threadedly connected to the two groups of columns (41) so that the distance between the two groups of columns (41) can be adjusted by rotating the tensioning screw (53).

4. The high rigidity CNC forming milling machine according to claim 3, characterized in that: The spindle processing module (2) is arranged between the crossbeam (51) and the tension screw (53).

5. The high rigidity CNC forming milling machine according to claim 1, characterized in that: The fixing assembly (6) comprises a fixing portion (61), a connecting portion (62) and a fixing bolt (63); the fixing portion (61) is fixedly arranged on the column (41); the connecting portion (62) is fixedly arranged on the spindle processing module (2); and the fixing bolt (63) can be passed through the fixing portion (61) and the connecting portion (62) so as to fix the spindle processing module (2).

6. The high rigidity CNC forming milling machine according to claim 5, characterized in that: The fixing portion (61) is provided with a strip hole (64) arranged along the Z direction, the fixing bolt (63) is passed through the strip hole (64) and inserted into the threaded hole on the connecting portion (62), the spindle processing module (2) can drive the fixing bolt (63) to slide along the strip hole (64), and the fixing bolt (63) can be tightly fixed to the fixing portion (61) to fix the spindle processing module (2).

7. The high rigidity CNC forming milling machine according to claim 6, characterized in that: The connecting portion (62) is provided with a proximity switch (66), and the induction head of the proximity switch (66) faces the end of the fixing bolt (63).

8. The high rigidity CNC forming milling machine according to claim 1, characterized in that: Both ends of each of the sliders (43) are provided with lubrication cavities (71), each of the lubrication cavities (71) is provided with a lubrication sponge (72) that fits the linear rail (42), and the lubrication sponge (72) is filled with lubrication oil; The linear rail (42) is provided with a rack (73) arranged along the Z direction, and the slider (43) is rotatably connected with a gear (74) meshing with the rack (73). The slider (43) is provided with a pressure block (75) in each lubrication cavity (71), and the gear (74) is connected to the two pressure blocks (75) through a transmission member (76). The gear (74) can drive the pressure block (75) located at the front end of the slider (43) to squeeze the lubricating sponge (72) through the transmission member (76), so as to squeeze the lubricating oil and coat it on the track surface of the linear rail (42).

9. The high rigidity CNC forming milling machine according to claim 8, characterized in that: The transmission member (76) includes two connecting rods (761), a base plate (762) and a push plate (763); the connecting rods (761) correspond to the pressing blocks (75) one by one and are fixedly connected; the connecting rods (761) are slidably arranged on the slider (43); each connecting rod (761) is provided with a stopper (764); each connecting rod (761) is connected to the slider (43) via a reset spring (765); and the reset spring (765) can push the pressing block (75) to reset; The two substrates (762) are fixedly arranged on the two end surfaces of the gear (74); the push plates (763) correspond to the substrates (762) one by one and are rotationally connected via a rotating shaft (766); the push plates (763) on the two substrates (762) face opposite directions; a supporting surface (767) is provided on the substrate (762); the supporting surface (767) can limit the rotation of the push plates (763) so that the push plates (763) can push the block (764) to slide; the rotating shaft (766) and the substrate (762) are connected via a reset torsion spring (768); the reset torsion spring (768) can drive the push plates (763) to fit the support surface (767).

10. A method for installing a high-rigidity CNC molding milling machine, characterized in that: The steps include: S1, assembling the spindle processing module (2) and installing the clamping system (3) on the workbench (1); S2, installing the spindle processing module (2) on the two columns (41) through the linear rail (42) and the slider (43) structure, and then installing the preload assembly (5) on the two columns (41); S3, placing the two columns (41) on the workbench (1), and then adjusting the distance between the two columns (41) to a required distance through the pre-tightening assembly (5); S4, fixing the column (41) on the workbench (1); S5, adjusting the spindle processing module (2) to a specified height, and then fixing the spindle processing module (2) by a fixing component (6); S6. Complete the installation and debugging of the CNC system.

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