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CN-122007924-A - X-axis transmission device and method of high-speed numerical control floor type boring and milling machine

CN122007924ACN 122007924 ACN122007924 ACN 122007924ACN-122007924-A

Abstract

The invention relates to the technical field of transmission, in particular to an X-axis transmission device and method of a high-speed numerical control floor type boring and milling machine, comprising a machine base, a sliding seat and a ball screw, wherein the outer surface of the ball screw is in threaded connection with a movable seat connected with the sliding seat, the X-axis transmission device further comprises a screw cooling system, the screw cooling system comprises two cooling cavities which are arranged inside the movable seat, the two cooling cavities are communicated through a circulation cooling pipe, a cooling assembly for driving cooling liquid in the cooling cavities to circulate mutually is arranged inside the circulation cooling pipe, the cooling assembly for purging the circulation cooling pipe is further arranged inside the circulation cooling pipe, the dynamic vibration reduction system comprises a plurality of cranks which are rotatably connected to the bottom of the sliding seat, a liquid cylinder with vibration reduction oil stored inside the liquid cylinder is rotatably connected to the bottom of the crank, a buffer assembly for applying damping to the vibration reduction oil in the liquid cylinder is arranged at the top of the movable seat, and an auxiliary frame is fixedly connected to the bottom of the movable seat.

Inventors

  • ZHAI YUXIANG
  • ZHANG ZHENQIANG
  • CHENG XIANG
  • CHAI XINLI
  • Cheng Enqiang
  • ZHANG ZHENJIE

Assignees

  • 山东润龙机床有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. The utility model provides a X axle transmission of high-speed numerical control floor type boring and milling machine, includes frame (100), slide (101) and ball (104), the surface threaded connection of ball (104) has moving seat (107) of being connected with slide (101), characterized in that still includes: The nut cooling system comprises two cooling cavities (200) which are arranged in the movable seat (107), wherein the two cooling cavities (200) are communicated through a circulation radiating pipe (202), a radiating component for driving cooling liquid in the cooling cavities (200) to circulate mutually is arranged in the circulation radiating pipe (202), and the nut cooling system further comprises a cooling component for purging the circulation radiating pipe (202); The dynamic vibration reduction system comprises a plurality of cranks (300) which are rotationally connected to the bottom of a sliding seat (101), a liquid cylinder (301) with vibration reduction oil stored in the top of a movable seat (107) is arranged at the bottom of the crank (300), a push rod (307) which is slidingly connected to the inside of the liquid cylinder (301) is rotationally connected to the bottom of the crank (300), a buffer component for applying damping to the vibration reduction oil in the liquid cylinder (301) is arranged at the top of the movable seat (107), an auxiliary frame (205) is fixedly connected to the bottom of the movable seat (107), an air cavity (218) is formed in the auxiliary frame (205), a movable plug piece (217) is arranged in the air cavity (218), and damping strength of the buffer component is controlled by adjusting the height of the plug piece (217).
  2. 2. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine of claim 1, wherein the heat dissipation assembly comprises a liquid shell (203) fixedly connected to the inside of a circulation heat dissipation pipe (202), a rotating rod (209) is rotatably connected to the inside of the liquid shell (203), a plurality of liquid pumping sheets (210) for driving cooling liquid to flow are fixedly connected to the outer surface of the inside of the liquid shell (203) of the rotating rod (209), a gear (204) is fixedly connected to one end of the rotating rod (209), and a rack (208) meshed with the gear (204) is fixedly connected to the inside of the machine base (100).
  3. 3. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine of claim 2, wherein the cooling assembly comprises an air pump (219) fixedly connected to one side of an auxiliary frame (205), an air conveying channel (220) communicated with an air cavity (218) is formed in the auxiliary frame (205), the output end of the air pump (219) extends into the air conveying channel (220), two ends of the air cavity (218) are communicated with air pipes (207), and one end of each air pipe (207) is connected with an air nozzle (206) facing to a circulating radiating pipe (202).
  4. 4. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine is characterized in that the buffer assembly comprises a central cylinder (303) fixedly connected to the top of the sliding seat (101), two ends of the central cylinder (303) are communicated with a liquid cylinder (301) through thin pipes (302), a plurality of porous plates (304) are fixedly connected to the inside of the central cylinder (303), a communication groove (305) is formed between the central cylinder (303) and the air cavity (218), a double-head plug rod (306) is slidably connected to the inside of the communication groove (305), and two ends of the double-head plug rod (306) extend to the inside of the central cylinder (303) and the inside of the air cavity (218) respectively.
  5. 5. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine of claim 2, wherein the pressure regulating assembly comprises a hanging rod (214) connected to the bottom of a plug piece (217) and in sliding connection with an auxiliary frame (205), an iron block (215) is fixedly connected to the bottom of the hanging rod (214), a cone cylinder (211) is fixedly connected to the outer surface of the rotating rod (209), a plurality of sliding strips (212) are fixedly connected to the outer surface of the cone cylinder (211), and a magnetic block (213) matched with the iron block (215) is slidably connected to the outer surface of the sliding strips (212).
  6. 6. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine according to claim 5, wherein the outer surface of the hanging rod (214) is sleeved with a spring (216) for resetting the hanging rod.
  7. 7. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine of claim 1, wherein a connecting frame (108) which is in sliding connection with the sliding seat (101) is fixedly connected to the top of the movable seat (107).
  8. 8. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine of claim 1, wherein a servo driving motor (105) for driving a ball screw (104) to rotate is fixedly connected to the top of the machine base (100), a bearing seat (106) for supporting the ball screw (104) is fixedly connected to the top of the machine base (100), a sliding rail (103) is fixedly connected to the top of the machine base (100), and a sliding shoe (102) in sliding connection with the sliding rail (103) is arranged at the bottom of the sliding seat (101).
  9. 9. The X-axis transmission device of the high-speed numerical control floor type boring and milling machine of claim 8, wherein one end of the sliding seat (101) is fixedly connected with a liquid pump (400), an oil conveying cavity (404) for oil to enter is formed in the sliding seat (101), a plurality of throttlers (401) connected with the sliding shoes (102) are connected to the bottom of the oil conveying cavity (404), a plurality of oil cavities (402) are formed in the inner wall of the sliding shoes (102), and a plurality of oil sealing edges (403) are fixedly connected to the inner part of the sliding shoes (102).
  10. 10. An X-axis transmission method of a high-speed numerical control floor milling and boring machine, according to any one of claims 1-9, characterized by comprising the following steps: S1, when in use, the upright post can be fixed on the top of the sliding seat (101), and then the sliding seat (101) is driven to move by driving the ball screw (104) to rotate; S2, when the upright post is vibrated, the upright post acts on the crank (300) to enable the piston end of the push rod (307) to be extruded to move in the liquid cylinder (301), and the dynamic vibration reduction system absorbs the vibration; S3, when the movable seat (107) moves, the screw cooling system operates to dissipate heat of the cooling liquid in the cooling cavity (200).

Description

X-axis transmission device and method of high-speed numerical control floor type boring and milling machine Technical Field The invention relates to the technical field of transmission, in particular to an X-axis transmission device and method of a high-speed numerical control floor milling and boring machine. Background The high-speed numerical control floor milling and boring machine is core equipment in the field of modern heavy machinery manufacturing, and is widely applied to precision machining of large complex parts in the fields of energy equipment (such as nuclear power, hydropower), aerospace, ship manufacturing, rail transit and the like. As one of the "three basic parts" (bed, spindle, feed system) of the machine tool, the X-axis transmission directly determines the dynamic characteristics, positioning accuracy and long-term stability of the machine tool. With the development of the manufacturing industry to high precision, high efficiency and high reliability, the X-axis transmission technology gradually evolves from traditional mechanical transmission to an electromechanical integrated precision system. The patent document with the publication number of CN218312223U relates to an X-axis transmission device of a high-speed numerical control floor type boring and milling machine, which comprises a workbench, a movable sliding rail, a fixed bearing seat, a nut block, a screw rod and a driving motor, wherein a supporting component is arranged on the screw rod, the supporting component comprises a movable block and a connecting rod, the movable block is provided with two nut blocks, the nut block is positioned between the two movable blocks, a second screw hole is formed in the movable block, the screw rod passes through the second screw hole and is in threaded fit with the second screw hole, a plurality of connecting rods are arranged between the two movable blocks, a through hole is formed in the position of the nut block corresponding to the connecting rod, the connecting rod passes through the through hole and is in sliding fit with the through hole, when the workbench moves to a limit position, one movable block moves to a position close to the fixed bearing seat, and the other movable block is positioned at the middle part of the screw rod. This patent document has the effect of reducing the possibility of self-weight deformation of the screw. Although an auxiliary supporting component with a multi-supporting-point layout is commonly adopted in an X-axis transmission system of a modern high-speed numerical control floor type boring and milling machine so as to disperse screw loads and inhibit single-point bending deformation, the structural design still faces a fundamental technical bottleneck under a heavy cutting working condition. When a machine tool performs a large number of heavy-load cutting operations, a large amount of frictional heat is generated in the meshing area of the screw rod and the nut due to rapid increase of contact stress, and the heat rapidly accumulates in the sealed nut, so that effective derivation is difficult. The non-uniform heat distribution causes irregular thermal expansion of the filament parent body, especially microscopic geometric distortion is formed in a key area of the ball circulation channel, and a preset ball contact angle and a pre-tightening state are damaged. The result is that the kinematic characteristics of the screw rod and the screw pair are changed essentially, namely, the original accurate spiral motion is converted into compound displacement with a thermal drift component, so that the X-axis positioning reference is shifted continuously. Therefore, the application provides an X-axis transmission device and method of a high-speed numerical control floor type milling and boring machine. Disclosure of Invention The invention aims to provide an X-axis transmission device and method of a high-speed numerical control floor type boring and milling machine, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the technical scheme that the X-axis transmission device of the high-speed numerical control floor type milling and boring machine comprises a machine base, a sliding seat and a ball screw, wherein the outer surface of the ball screw is in threaded connection with a movable seat connected with the sliding seat, and the X-axis transmission device further comprises: the nut cooling system comprises two cooling cavities which are arranged in the movable seat, wherein the two cooling cavities are communicated through a circulation radiating pipe, a radiating component for driving cooling liquid in the cooling cavities to mutually circulate is arranged in the circulation radiating pipe, and the nut cooling system further comprises a cooling component for blowing the circulation radiating pipe; The dynamic vibration reduction system comprises a plurality of cranks which are rotationally co