Search

CN-122007841-A - Assembly fixture device for shaft

CN122007841ACN 122007841 ACN122007841 ACN 122007841ACN-122007841-A

Abstract

The invention relates to the technical field of machinery and discloses an assembly fixture device for a shaft, which comprises a flange mounting plate, a base frame, two main arms and a sliding groove, wherein the flange mounting plate is fixedly connected with a flange head of a mechanical arm at the tail end of the mechanical arm through bolts, the base frame is fixedly connected to the flange mounting plate, a plurality of reference mounting holes are formed in the base frame at intervals, the upper reference mounting hole and the lower reference mounting hole are a mounting hole group, the main arms are assembled on the base frame in a bilateral symmetry mode and are fixed with one of the mounting hole groups through bolts, and the end, far away from the base frame, of each main arm is provided with the sliding groove. According to the invention, the main air pipe connector is externally connected with the air pump through the pipeline, the disc type rubber air bag is inflated through the air pump, the miniature electromagnetic valve is deflated, and the clamping and the releasing of the shaft are realized by utilizing the shrinkage and expansion of the disc type rubber air bag and the interval adjustment of the inflatable chucks.

Inventors

  • JIANG YUHENG
  • RUAN WEI
  • RUAN WEIJUN

Assignees

  • 浙江大魏智能装备科技有限公司

Dates

Publication Date
20260512
Application Date
20260408

Claims (8)

  1. 1. An assembly jig device for a shaft, characterized by comprising: the flange mounting plate (14) is fixedly connected with a mechanical arm flange head (13) at the tail end of the mechanical arm (11) through bolts; The base frame (16) is fixedly connected to the flange mounting plate (14), a plurality of reference mounting holes (17) are formed in the base frame (16) at intervals, and the upper reference mounting hole and the lower reference mounting hole (17) are a mounting hole group; The two main arms (23) are symmetrically assembled on the base frame (16) left and right, and are fixed with one of the mounting hole groups through bolts, and a sliding groove is formed in one end, far away from the base frame (16), of the main arms (23); the auxiliary arm (24) is arranged in the middle of the base frame (16), and a sliding groove is formed in the auxiliary arm (24); the inflatable chuck (22) comprises a sliding block (26) arranged in the sliding groove and air clamping wheels (15) rotatably assembled at two ends of the sliding block (26), wherein the three air clamping wheels (15) have a clamping state and a non-clamping state and meet the following conditions: A clamping state in which the center distance of two air clamp wheels (15) on the main arm (23) minus the diameter of the air clamp wheels (15) is smaller than the diameter of the clamped shaft, and the length of the distance from the center of the air clamp wheels (15) on the auxiliary arm (24) to the center connecting line of the other two air clamp wheels (15) minus the radius of the air clamp wheels (15) is larger than the radius of the clamped shaft; a non-clamping state in which the diameter of the air clamp wheel (15) subtracted from the center distance of the two air clamp wheels (15) positioned on the main arm (23) is larger than the diameter of the clamped shaft; And the air supply line is used for inflating the air clamp wheel (15).
  2. 2. An assembly jig device for a shaft according to claim 1, wherein the main arm (23) includes an arm head (19) having two through holes and an arm lever (20) integrally formed with the arm head (19), the slide groove is provided at an end of the arm lever (20), and the arm head (19) is fixed to the reference mounting hole (17) by a bolt.
  3. 3. The assembly jig device for a shaft according to claim 2, wherein the air clamp wheel (15) comprises a rubber air bag base wheel (28) rotatably arranged on the sliding block (26) and a disc type rubber air bag (32) sleeved on an annular concave part of the rubber air bag base wheel (28), the disc type rubber air bag (32) is increased after being inflated through an air supply route, and the axial elastic modulus of the disc type rubber air bag (32) is larger than that of the disc type rubber air bag.
  4. 4. The assembly jig device for a shaft according to claim 3, wherein a push plate (21) exceeding the axial length of the air clamp wheel (15) is fixedly arranged at the tail end of the arm lever (20), the disc rubber air bag (32) is in unilateral contact with the push plate (21) after being inflated, the disc rubber air bag (32) on the arm lever (20) can approach the disc rubber air bag (32) on the auxiliary arm (24) under the action of reaction force to achieve the tightening and clamping effects, and the radius of the disc rubber air bag (32) is increased to clamp the clamped shaft after being inflated.
  5. 5. The shaft mounting jig apparatus as set forth in claim 4, further comprising a spring (25), said spring (25) being mounted in a slide groove of said air-filled chuck (22) and said auxiliary arm (24), both ends of said spring (25) mounted on said arm lever (20) being fixed to said arm lever (20) and said slider (26) respectively and pushing said slider (26) in the direction of said push plate (21), and both ends of said spring (25) mounted on said auxiliary arm (24) being fixed to said auxiliary arm (24) and the corresponding slider (26) respectively and pushing said slider (26) to an initial position.
  6. 6. The assembly fixture device for the shaft, as set forth in claim 5, characterized in that the slider (26) is hollow and internally and symmetrically provided with a dynamic seal bearing (30), the rotating shaft of the rubber air bag base wheel (28) is assembled with the dynamic seal bearing (30), an air pipe is arranged in the rotating shaft of the rubber air bag base wheel (28) and communicated with the inner cavity of the slider (26), the other end of the air pipe is provided with an air tap (29), and the air charging port of the disc type rubber air bag (32) is fixedly connected with the air tap (29).
  7. 7. The shaft mounting jig device according to claim 6, wherein the slider (26) is further fixedly provided with a micro solenoid valve (31) communicating with an inner cavity thereof, the micro solenoid valve (31) is opened when the clamping is released, air is rapidly discharged under indirect compression of the spring (25) and elastic recovery of the disc rubber bag (32), and the air-filled chuck (22) is reset.
  8. 8. An assembly jig device for a shaft according to claim 7, wherein the air supply route comprises a rubber air pipe (27) communicated with an inner cavity of the slider (26), a main air pipe connector (18) fixed on the base frame (16), and a three-way pipe connector connected with the main air pipe connector (18), wherein the three-way pipe connector is communicated with three rubber air pipes (27) respectively and forms an air supply route for the slider (26), in particular, a cavity for the rubber air pipe (27) to be assembled is arranged inside the auxiliary arm (24) and the arm rod (20), the rubber air pipe (27) is flexible and has a mounting length allowance enough for the inflatable chuck (22) to normally move, the main air pipe connector (18) is connected with an air pump through a pipeline, the disc type rubber air bag (32) is inflated through the air pump, and the micro electromagnetic valve (31) is deflated.

Description

Assembly fixture device for shaft Technical Field The invention relates to the technical field of machinery, in particular to an assembly fixture device for a shaft. Background In the assembly process of the shaft, the shaft is manually grabbed by the mechanical arm and then moved to a designated position for assembly, the existing mechanical arm clamping parts are all electric chucks, and the electric chucks with higher power are required to be assembled due to the fact that the weight of the shaft is higher, so that the weight of the tail end of the mechanical arm is increased, the energy consumption of the mechanical arm is improved, in addition, the electric chucks clamp shafts, and the outer surface of the shaft is easily scratched due to hard collision and clamping. Disclosure of Invention The technical problem to be solved by the invention is to provide an assembly fixture device for a shaft, which solves the problems and the like. The invention solves the technical problems by adopting the following technical scheme: An assembly jig device for a shaft, comprising: the flange mounting plate is fixedly connected with a mechanical arm flange head at the tail end of the mechanical arm through bolts; the base frame is fixedly connected to the flange mounting plate, a plurality of reference mounting holes are formed in the base frame at intervals, and the upper reference mounting hole and the lower reference mounting hole form a mounting hole group; the two main arms are assembled on the base frame in a bilateral symmetry manner and fixed with one of the mounting hole groups through bolts, and a sliding groove is formed in one end, far away from the base frame, of each main arm; The auxiliary arm is arranged in the middle of the base frame and is provided with a sliding groove; the inflatable chuck comprises a sliding block arranged in the sliding groove and air clamp wheels rotationally assembled at two ends of the sliding block, wherein the three air clamp wheels are in a clamping state and a non-clamping state and meet the following conditions: The clamping state is that the diameter of the clamped shaft is smaller than the diameter of the center distance minus the diameter of the two air clamp wheels on the main arm, and the length of the distance between the center of the air clamp wheel on the auxiliary arm and the connecting line of the centers of the other two air clamp wheels minus the radius of the air clamp wheel is larger than the radius of the clamped shaft; the non-clamping state is that the diameter of the air clamp wheel subtracted from the center distance of the two air clamp wheels positioned on the main arm is larger than the diameter of the clamped shaft; And the air supply route is used for inflating the air clamp wheel. In one embodiment, the main arm includes an arm head having two through holes and an arm lever integrally formed with the arm head, the slide groove is provided at a distal end of the arm lever, and the arm head is fixed to the reference mounting hole by a bolt. In one embodiment, the air clamp wheel comprises a rubber air bag base wheel rotatably arranged on the sliding block and a disc-type rubber air bag sleeved on the annular concave part of the rubber air bag base wheel, the disc-type rubber air bag is inflated through an air supply route and then is increased, and the axial elastic modulus of the disc-type rubber air bag is larger than that of the disc-type rubber air bag. In one embodiment, the arm rod is fixedly provided with a push plate exceeding the axial length of the air clamp shaft, the disc type rubber air bag is in contact with the push plate on one side after being inflated and expanded, the disc type rubber air bag on the arm rod can approach the disc type rubber air bag on the auxiliary arm under the action of the reaction force to achieve the tightening and clamping effects, and meanwhile the radius of the disc type rubber air bag is increased to clamp the clamped shaft after being inflated and expanded. In one embodiment, the device further comprises a spring, wherein the spring is assembled in the sliding grooves of the inflatable chuck and the auxiliary arm, two ends of the spring arranged on the arm rod are respectively fixed on the arm rod and the sliding block and push the sliding block to the direction of the push plate, and two ends of the spring arranged on the auxiliary arm are respectively fixed on the auxiliary arm and the corresponding sliding block and push the sliding block to the initial position. In one embodiment, the slider is hollow and internally and symmetrically provided with a dynamic seal bearing, the rotating shaft of the rubber air bag base wheel is assembled with the dynamic seal bearing, an air pipe is arranged in the rotating shaft of the rubber air bag base wheel and communicated with the inner cavity of the slider, an air nozzle is arranged at the other end of the rotating shaft, and an air charging port of the disc