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CN-122007964-A - Damping mechanism for machining movement

CN122007964ACN 122007964 ACN122007964 ACN 122007964ACN-122007964-A

Abstract

The invention discloses a damping mechanism for machining a machine core, which comprises a base and a bearing table, wherein the bearing table is used for being connected with the machine table, a plurality of spring damping pieces are connected between the bearing table and the base, a central support column is arranged in the middle of the bottom end of the bearing table, a plurality of arc-shaped elastic cantilevers are arranged on the top surface of the base, are uniformly distributed along the circumferential direction of the central support column, the bottom of the central support column is of a semicircular structure, the upper part of the central support column is of a frustum-shaped structure and is in arc transition connection with the bearing table, and the lower end of the arc-shaped elastic cantilever is fixed on the upper surface of a base plate and the upper end of the arc-shaped elastic cantilever is of a free end.

Inventors

  • WEI ZHENJIANG
  • WU SHUGANG
  • GUO YANFEN

Assignees

  • 福建众辰精密机芯有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (7)

  1. 1. The damping mechanism for the movement machining is characterized by comprising a base and a bearing table, wherein the bearing table is used for being connected with the machine table, a plurality of spring damping pieces are connected between the bearing table and the base, a central supporting column is arranged in the middle of the bottom end of the bearing table, a plurality of arc-shaped elastic cantilevers are arranged on the top surface of the base, and the arc-shaped elastic cantilevers are uniformly distributed along the circumferential direction of the central supporting column; The bottom of the central support column is of a semicircular structure, the upper part of the central support column is of a frustum-shaped structure and is in arc transitional connection with the bearing table, the lower end of the arc-shaped elastic cantilever is fixed on the upper surface of the base plate, the upper end of the arc-shaped elastic cantilever is a free end and is in elastic contact fit with the side wall of the central support column in an elastic pre-tightening state, and when the central support column is loaded to generate vibration or displacement, the arc-shaped elastic cantilever can absorb impact energy through elastic deformation of the arc-shaped elastic cantilever; And when the sinking speed of the bearing table exceeds the normal vibration speed due to instantaneous impact load, the lifting piece in the bearing table ascends to form a lifting support for the bearing table, so that the bearing table is limited to continuously sink.
  2. 2. The damping mechanism for machining a movement according to claim 1, wherein the limiting lifting mechanism comprises a first cylinder, a lower pressing rod, a second cylinder and a lifting rod, the first cylinder and the second cylinder are assembled on the top surface of the base, the lower pressing rod is assembled on the first cylinder in a sliding mode, the top end of the lower pressing rod is connected with a bearing table, a sealing block is arranged at the bottom end of the lower pressing rod, an air outlet hole is formed in the bottom of the first cylinder, a vent pipe is connected between the first cylinder and the second cylinder, the lifting rod is assembled on the second cylinder in a sliding mode, a second sealing block is arranged at the lower end of the lifting rod, a baffle is arranged at the communicating position of the vent pipe and the first cylinder in a rotating mode, and a torsion spring is connected between a rotating shaft of the baffle and the inner wall of the vent pipe.
  3. 3. The damping mechanism for machining a movement according to claim 2, wherein an arc-shaped lifting block is fixed at the top end of the lifting rod, an elastic buffer pad is fixed on the upper surface of the arc-shaped lifting block, a guide sliding groove is formed in the inner wall of the second cylinder, a guide sliding block matched with the guide sliding groove is fixed on the side wall of the lifting rod, and the guide sliding block is slidably embedded in the guide sliding groove.
  4. 4. The damping mechanism for machining a movement according to claim 1, wherein the number of the arc-shaped elastic cantilevers is four, the arc-shaped elastic cantilevers are of an arc-shaped bent plate-shaped structure, and reinforcing ribs are connected between the lower ends of the arc-shaped elastic cantilevers and the base and used for enhancing the structural strength of the arc-shaped elastic cantilevers and limiting the maximum deformation of the arc-shaped elastic cantilevers.
  5. 5. The damping mechanism for machining a movement according to claim 1, wherein the lower end of the base is provided with a support, the base is movably assembled in the support, the bottoms of the side ends of the base are respectively provided with a yielding opening, the side ends in the support are respectively connected with a connecting rod, the connecting rods are connected with arc-shaped buffer arms in a sliding manner, the bending parts of the arc-shaped buffer arms are connected with the yielding openings, and buffer spring pieces are respectively connected between the two ends of the arc-shaped buffer arms and the support.
  6. 6. The damping mechanism for machining a movement according to claim 1, wherein a fixing seat is arranged above the bearing table, the fixing seat is connected with the bearing table through a plurality of supporting rods, a plurality of leveling seats are movably distributed at the upper end of the fixing seat and are connected with the machine table, a plurality of guide rods are arranged at the bottom ends of the leveling seats, corresponding sliding ports are formed in the fixing seat and are in sliding connection with the sliding blocks, a screw rod is rotatably connected to the bottom ends of the leveling seats, an adjusting port corresponding to the screw rod is formed in the fixing seat, an adjusting sleeve is rotatably connected to the lower end of the adjusting port, and the adjusting sleeve is in threaded connection with the screw rod.
  7. 7. The damping mechanism for machining a movement according to claim 1, wherein the inner side of the free end of the arc-shaped elastic cantilever is fixedly provided with an arc-shaped wear-resistant lining plate, the inner cambered surface of the arc-shaped wear-resistant lining plate is attached to the side wall of the central support column, the inner cambered surface of the arc-shaped wear-resistant lining plate is provided with a plurality of annular grooves, the annular grooves are filled with flexible buffer adhesive layers, and the flexible buffer adhesive layers are in elastic contact fit with the side wall of the central support column.

Description

Damping mechanism for machining movement Technical Field The invention relates to the technical field of machine tool vibration reduction, in particular to a vibration reduction mechanism for machining a machine core. Background Movement parts (such as a clock movement, a micro motor movement, an instrument movement and the like) generally have the characteristics of precise structure, tiny size, poor rigidity and easy influence of vibration. In the working procedures of core milling, drilling, grinding, assembling and the like: The machine tool vibration, the cutter cutting vibration and the ground transmission vibration can directly lead to the processing size to be out of tolerance and the surface roughness to be poor, the vibration is easy to cause the collision and deformation of precise parts such as gears, shafts, balance wheels and the like in the machine core, the precision and the service life of a finished product are influenced, and the problems of poor low-frequency vibration isolation, easy creep, low reset precision, insufficient stability and the like of the traditional rubber pad and the common spring damping structure are difficult to meet the high-precision processing requirement. Therefore, a special damping mechanism with good damping effect, accurate resetting, high stability and adaptation to the machining of the precision machine core is needed. Disclosure of Invention The invention aims to provide a damping mechanism for machining a machine core, which aims to solve the problems in the background technology. The damping mechanism for the movement machining comprises a base and a bearing table, wherein the bearing table is used for being connected with the machine table, a plurality of spring damping pieces are connected between the bearing table and the base, a central support column is arranged in the middle of the bottom end of the bearing table, a plurality of arc-shaped elastic cantilevers are arranged on the top surface of the base, and the arc-shaped elastic cantilevers are uniformly distributed along the circumferential direction of the central support column; The bottom of the central support column is of a semicircular structure, the upper part of the central support column is of a frustum-shaped structure and is in arc transitional connection with the bearing table, the lower end of the arc-shaped elastic cantilever is fixed on the upper surface of the base plate, the upper end of the arc-shaped elastic cantilever is a free end and is in elastic contact fit with the side wall of the central support column in an elastic pre-tightening state, and when the central support column is loaded to generate vibration or displacement, the arc-shaped elastic cantilever can absorb impact energy through elastic deformation of the arc-shaped elastic cantilever; And when the sinking speed of the bearing table exceeds the normal vibration speed due to instantaneous impact load, the lifting piece in the bearing table ascends to form a lifting support for the bearing table, so that the bearing table is limited to continuously sink. Further, the limiting lifting mechanism comprises a first barrel, a lower pressing rod, a second barrel and a lifting rod, wherein the first barrel and the second barrel are assembled on the top surface of the base, the lower pressing rod is assembled on the first barrel in a sliding mode, the top end of the lower pressing rod is connected with the bearing table, the bottom end of the lower pressing rod is provided with a sealing block, an air outlet hole is formed in the bottom of the first barrel, a vent pipe is connected between the first barrel and the second barrel, the lifting rod is assembled on the second barrel in a sliding mode, the lower end of the lifting rod is provided with a second sealing block, a baffle is arranged at the communicating position of the vent pipe and the first barrel in a rotating mode, and a torsion spring is connected between a rotating shaft of the baffle and the inner wall of the vent pipe. Further, an arc-shaped lifting block is fixed at the top end of the lifting rod, an elastic buffer cushion is fixed on the upper surface of the arc-shaped lifting block, a guide sliding groove is formed in the inner wall of the second cylinder, a guide sliding block matched with the guide sliding groove is fixed on the side wall of the lifting rod, and the guide sliding block is slidably embedded in the guide sliding groove. Further, the quantity of arc elastic cantilever is four groups, the arc elastic cantilever is the platy structure of arc bending, be connected with the strengthening rib between arc elastic cantilever lower extreme and the base for strengthen arc elastic cantilever structural strength and restrict its maximum deflection. Further, the lower extreme of base is provided with the support, base movable assembly is in the support, the back-off mouth has all been seted up to each side end bottom of base, each side end all is con