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CN-122007801-A - Fillet rolling strengthening machine capable of easily adjusting arc meshing angle

CN122007801ACN 122007801 ACN122007801 ACN 122007801ACN-122007801-A

Abstract

The invention discloses a fillet rolling strengthening machine easy to adjust the meshing angle of circular arcs, relates to the technical field of aviation fastener strengthening rolling, and solves the problem that the existing strengthening machine is difficult to accurately adjust the meshing angle between a rolling wheel and a workpiece. The fillet strengthening machine comprises a rolling device and two angle adjusting mechanisms, wherein the rolling device comprises two rolling wheels which are adjustable in distance and symmetrically arranged, the two rolling wheels can deflect up and down along a vertical plane to clamp or loosen a workpiece, a rolling part is formed on the peripheral surface of the rolling wheel in a protruding mode at least partially upwards along the circumferential direction, a rolling cambered surface is formed on the circumferential direction of the rolling part, the two angle adjusting mechanisms are respectively used for adjusting contact angles of the two rolling wheels and the workpiece, and the angle adjusting mechanisms comprise angle adjusting seats which can rotate around a rotating center and deflect up and down along an arc track. The fillet rolling strengthening machine has the advantages of simple structure, simple angle adjustment, small position change and the like.

Inventors

  • MENG QIANJUN
  • MENG LINGYUAN
  • LIANG CHUANWEN
  • GAN JUNJIE

Assignees

  • 英科钛紧固件设备(上海)有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (10)

  1. 1. A kind of fillet rolling strengthening machine which is apt to adjust the engagement angle of circular arc, characterized by comprising: the rolling device comprises two rolling wheels (13) with adjustable intervals and symmetrically arranged, wherein the two rolling wheels (13) can deflect up and down in a vertical plane to clamp or loosen a workpiece, a rolling part (1301) is formed on the peripheral surface of the rolling wheel (13) in a way of protruding upwards at least partially along the circumferential direction, a rolling cambered surface (1302) is formed on the circumferential direction of the rolling part (1301), and the radian of the rolling cambered surface (1302) is matched with the radian of an R angle of a part to be reinforced on the workpiece; The two angle adjusting mechanisms (6) are respectively used for adjusting the contact angles of the two rolling wheels (13) and the workpiece to adapt to different types of workpieces, the angle adjusting mechanisms (6) comprise angle adjusting seats (602) which can rotate around a rotating center and deflect up and down along an arc track, the rotating center is close to the position of the workpiece when the workpiece enters between the two rolling wheels (13), and the angles of the two rolling wheels (13) are respectively adjusted by moving the angle adjusting seats (602).
  2. 2. The fillet rolling strengthening machine easy to adjust the meshing angle of the circular arc according to claim 1, wherein the angle adjusting mechanism (6) further comprises an angle adjusting driving seat (601) in sliding contact with the bottom surface of the angle adjusting seat (602), the contact surfaces between the angle adjusting driving seat (601) and the angle adjusting seat (602) are cambered surfaces, and the radian of the cambered surfaces is matched with the deflection track of the angle adjusting seat (602).
  3. 3. The fillet rolling strengthening machine easy to adjust the meshing angle of the circular arc according to claim 2, wherein the angle adjusting mechanism (6) further comprises a driving shaft (604) rotatably connected to the bottom of the angle adjusting seat (602), a rotating shaft (603) rotatably connected to the angle adjusting driving seat (601), and an angle adjusting screw (609) sequentially penetrating through the rotating shaft (603) and the driving shaft (604) along a direction perpendicular to the axial direction and being in threaded connection with the driving shaft (604), wherein the angle adjusting screw (609) is rotatably connected with the rotating shaft (603).
  4. 4. The fillet rolling strengthening machine easy to adjust the meshing angle of the circular arc according to claim 3, wherein the angle adjusting driving seat (601) is provided with an arc-shaped groove (6011) extending along the deflection track of the angle adjusting seat (602), two side walls of the arc-shaped groove (6011) are provided with arc-shaped guide holes (6012), and two ends of the driving shaft (604) are respectively positioned in the guide holes (6012) at two sides of the arc-shaped groove (6011).
  5. 5. The corner rolling strengthening machine capable of easily adjusting the engagement angle of circular arcs according to claim 4, wherein the bottom of the angle adjusting seat (602) is formed with a connecting portion (6021) protruding downward, and the driving shaft (604) is rotatably connected to the connecting portion (6021).
  6. 6. The fillet rolling strengthening machine easy to adjust the arc engagement angle according to claim 5, wherein two sides of the connecting portion (6021) are respectively provided with an angle limiting block (605), and the two angle limiting blocks (605) are respectively embedded in guide holes (6012) on two sides of the arc groove and can slide relative to the guide holes (6012).
  7. 7. The fillet rolling strengthening machine easy to adjust the arc engagement angle according to claim 4, wherein detachable end covers (606) are respectively arranged at two ends of the driving shaft (604), and the end covers (606) are embedded in the guide holes (6012).
  8. 8. The fillet rolling strengthening machine easy to adjust the meshing angle of the circular arc according to claim 2, wherein, two sides of the angle adjusting seat (602) are respectively provided with a graduated scale (608), graduations on the graduated scale (608) are arranged along the deflection track of the angle adjusting seat (602), two sides of the angle adjusting driving seat (601) are respectively provided with an angle staff (607) corresponding to the graduated scale (608), and the angle staff (607) is provided with indication lines pointing to specific graduations on the graduated scale (608).
  9. 9. The corner rolling and strengthening machine with the function of easily adjusting the engagement angle of circular arcs according to claim 1, further comprising: a pressing rod (12), wherein the pressing rod (12) can move downwards to press a workpiece downwards, so that the two rolling wheels (13) deflect downwards to clamp the workpiece, and the pressing rod (12) can rotate passively under the driving of the workpiece; The device comprises a spacing adjusting mechanism (5) for adjusting the spacing between two rolling wheels (13), wherein the spacing adjusting mechanism (5) comprises two sliding bases (14) which can respectively move along the spacing direction of the two rolling wheels (13) and an adjusting block (501) which can move along the spacing direction perpendicular to the two rolling wheels (13), and the angle adjusting mechanism (6) is installed on the sliding bases (14).
  10. 10. The fillet rolling strengthening machine easy to adjust the arc engagement angle according to claim 9, wherein the sliding base (14) is slidably disposed on the slideway plate (4), the spacing adjusting mechanism (5) further comprises a spacing adjusting screw (503) and two inclined plane positioning blocks (502) rotatably connected to the slideway plate (4), the two inclined plane positioning blocks (502) are fixedly mounted on opposite sides of the two sliding base (14), and two side surfaces of the adjusting block (501) are respectively in inclined plane fit with the two inclined plane positioning blocks (502).

Description

Fillet rolling strengthening machine capable of easily adjusting arc meshing angle Technical Field The invention relates to the technical field of aviation fastener reinforcement rolling, in particular to a fillet rolling reinforcement machine with an easily adjustable arc engagement angle. Background The fillet rolling strengthening process is applied to the transition part of the bolt head and the bolt rod of the high-strength fastener represented by the aviation bolt, and is characterized in that forward rolling force is applied to the arc to strengthen rolling, compressive stress is generated on the surface of the arc of metal, so that the roughness of the surface of the arc is improved, the density of metal materials at the joint of the arc is increased, the purpose of preventing and avoiding microcracks from being generated on the arc at the joint of the head and the bolt rod under the condition of frequent tensile stress is achieved, and finally, the flight safety of various airplanes and aircrafts connected by the aviation bolt is realized. The existing fillet rolling strengthening machine adopting two rolling wheels as shown in the publication No. CN113231789A, CN114669642A, CN113245460A adopts an angle adjusting mechanism for realizing angle adjustment through a rotating shaft when adjusting the relative angles of the two rolling wheels, and particularly, the rolling wheels are vertically deflected around a horizontal rotating shaft by matching a horizontally arranged ejector rod with a spring positioned below a rolling wheel part, so that the angle adjustment is realized. But this angular adjustment is not precise. The angle adjusting mechanism of the rotating shaft adopted by the conventional fillet rolling strengthening machine is used for mixing the meshing angle adjustment of the circular arc of the rolling wheel and the circular arc of the workpiece with the blanking avoiding angle adjustment. The meshing angle is the contact angle between the cambered surface of the rolling wheel and the arc surface of the part to be processed of the workpiece, and the blanking avoidance angle is the angle that the rolling wheel automatically lifts upwards during blanking, so that the workpiece is loosened to facilitate loading and unloading. For the flat head bolt, if only one rotating shaft is used for adjusting the angle, if the avoiding angle is adjusted to be small, the gap between the rolling wheel and the workpiece is too small, and the part is not easy to be discharged. In order to enlarge the gap and thus to enable the unloading to be good, the clearance angle is increased, and then the rolling wheel can interfere with the flat head lower plane of the flat head bolt, because an engagement angle adjusting mechanism which is independently arranged for the engagement of the large rolling wheel and the circular arc of the workpiece is absent, and the precise engagement angle between the circular arc of the rolling wheel and the circular arc of the flat head cannot be adjusted. Because for a fillet rolling strengthening machine, the shape of the rolling wheel is determined by the main parameter-the circular arc size, whether the flat head bolt (the included angle between the head and the rod is 90 degrees) or the countersunk head bolt (the included angle between the head and the rod is 120-135 degrees) with the same circular arc parameter is processed, only one pair of rolling wheels corresponding to the circular arc is needed to be processed interchangeably for the standardization of the rolling wheel. If the machine tool does not have the arc engagement adjusting mechanism, in order to ensure the basic arc engagement length for the flat head bolt and the countersunk head bolt, rolling wheels with different inclination angles are needed to be made in spite of the same arc on the rolling wheels so as to compensate the problem of non-uniform rolling wheel standards caused by the fact that no arc engagement angle adjusting mechanism exists. That is, the existing fillet strengthening machine adopts an angle adjusting mechanism with only one rotating shaft, namely, the angle for avoiding the blanking of the workpiece is adjusted by the angle adjusting mechanism, and the two circular arc meshing angles are adjusted by the angle adjusting mechanism. If a nonstandard rolling wheel is adopted, the cost rise is obvious, the user experience is poor due to the fact that the standardized management of the rolling wheel is disordered, and the rolling wheel is easy to mix up in actual production due to the fact that the rolling wheels used by the flat head bolt and the counter bore bolt are different. Disclosure of Invention The invention aims to solve the problems, designs a fillet rolling strengthening machine easy to adjust the meshing angle of circular arcs, and solves the problem that the existing strengthening machine is difficult to accurately adjust the meshing angle between a rolling wheel and a workpiece. T