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CN-122008039-A - Flexible production line for polishing inner cavity of shell along with shape

CN122008039ACN 122008039 ACN122008039 ACN 122008039ACN-122008039-A

Abstract

The invention provides a flexible polishing production line with a shape corresponding to an inner cavity of a shell, which comprises a discharging mechanism, a material conveying mechanism and a plurality of polishing stations. The material conveying mechanism is provided with a 3D visual recognition system and is used for recognizing the model of the workpiece before grabbing the workpiece, conveying the workpiece to a jig corresponding to a polishing station, and discharging the material conveying mechanism after processing is completed. And each polishing station is provided with a polishing executing mechanism, and the executing mechanism is provided with a visual detection mechanism for observing and detecting the polishing effect of the inner cavity of the shell in real time. The 3D visual recognition system is matched with the multiple polishing stations, the polishing stations can be automatically selected according to workpieces with different specifications, flexible polishing of the inner cavity along with the shape is achieved, polishing quality is monitored in real time through the visual detection mechanism, and machining precision and automation level of a production line are improved.

Inventors

  • LI WENJUN
  • HU HAIQIANG
  • SHI WEILONG
  • HONG GUANGYU
  • WANG SIDONG

Assignees

  • 大连誉洋工业智能有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (8)

  1. 1. The flexible grinding production line with the shape following inner cavity of the shell is characterized by comprising a discharging mechanism, a material conveying mechanism and a plurality of grinding stations (101), wherein the material conveying mechanism is provided with a 3D visual identification system which is used for conveying a workpiece to be ground from the discharging mechanism to a jig corresponding to the grinding stations (101) and taking the workpiece off from the grinding stations (101) and returning the workpiece to the discharging mechanism after finishing grinding; The polishing station (101) is provided with a polishing executing mechanism, and a visual detection mechanism for observing polishing effect is arranged on the polishing executing mechanism; The visual detection mechanism comprises an endoscope (6), the endoscope (6) is arranged on one side of the polishing piece (3), and the endoscope (6) is fixed on the driving unit (1) through a bearing rod (5); The endoscope comprises an endoscope body (6), and is characterized in that a cleaning module for cleaning the surface of the endoscope body (6) through air flow is arranged on one side of the endoscope body (6), the cleaning module comprises a driving component (9), a transition component (7) and a flow guiding component (8), the driving component (9) is in transmission connection with the flow guiding component (8) through the transition component (7), and air flow generated by the driving component (9) is conveyed to the flow guiding component (8) through the transition component (7) and guided to the surface of the endoscope body (6) through the flow guiding component (8); The air flow guide assembly (8) is used for guiding air flow generated by the driving assembly (9) to the image pickup end face of the endoscope (6) and one side close to the side wall of the inner cavity of the workpiece respectively, wherein the air flow flowing to one side close to the side wall of the inner cavity of the workpiece disappears before the air flow flowing to the image pickup end face of the endoscope (6), the air flow speed is smaller and smaller, and the final cleaning position of the endoscope (6) before the air flow stops is the image pickup end face.
  2. 2. A flexible grinding production line with a shape corresponding to the inner cavity of a shell body according to claim 1 is characterized in that the grinding executing mechanism comprises a driving unit (1), a driving main shaft (11) capable of rotating is fixed on the output end of the driving unit (1), and a grinding piece (3) is fixed on the end part of the driving main shaft (11).
  3. 3. The flexible grinding production line with the shape corresponding to the inner cavity of the shell body is characterized in that the driving assembly (9) comprises a pressurizing shell (91), a first piston plate (72) which can be reset after moving is connected inside the pressurizing shell (91) in a sliding mode, an air duct (93) is fixed on one side end face of the pressurizing shell (91), the air duct (93) is connected with the transition assembly (7), and a one-way valve (92) is fixed on the outer wall of one side, close to the air duct (93), of the pressurizing shell (91); A transmission rod (951) is fixed on the outer wall of the first piston plate (72), and a driven block (96) is fixed on the tail end of the transmission rod (951); the driving block (98), the driving block (98) is fixed on the outer wall of the driving main shaft (11), and the driving block (98) rotating along with the driving main shaft (11) is overlapped with the driven block (96) and pushes the driven block (96) to move.
  4. 4. A shell cavity conformal polishing flexible production line as claimed in claim 3, wherein the transition assembly (7) comprises a cylindrical accommodating shell (71), the accommodating shell (71) is fixed on the bearing rod (5) through at least one fixing rod (51), a first piston plate (72) is slidingly connected in the cavity of the accommodating shell (71), the first piston plate (72) can return to the original position after moving, and the air duct (93) is connected to one circular outer wall of the accommodating shell (71); The annular outer wall of the containing shell (71) is provided with two connecting holes at different positions, the connecting holes are connected with the flow guide assembly (8), and the position of one connecting hole is closer to the end face of the containing shell (71) where the air guide pipe (93) is located.
  5. 5. The flexible grinding production line with the shape corresponding to the inner cavity of the shell body, as set forth in claim 4, is characterized in that the diversion assembly (8) comprises a diversion shell (81), the diversion shell (81) is fixed at the joint of the bearing rod (5) and the endoscope (6), two independent air cavities are arranged in the diversion shell (81), and the two air cavities are respectively communicated with the first diversion pipe (83) and the second diversion pipe (84); The end part of the first guide pipe (83) protrudes out of the shooting end surface and then bends back to the shooting end surface for extension, and the second guide pipe (84) is a straight pipe and protrudes out of the shooting end surface and extends towards one side direction of the inner wall of the workpiece; the first guide pipe (83) is connected with a connecting hole near one side of the air duct (93) through a corresponding air cavity, and the second guide pipe (84) is connected with the other connecting hole through the other air cavity.
  6. 6. The flexible grinding production line with the shape corresponding to the inner cavity of the shell body according to claim 1, wherein the material conveying mechanism comprises a ground rail (102), a robot (103) capable of moving along the ground rail (102) is arranged on the ground rail (102), a mechanical arm capable of moving with multiple degrees of freedom is arranged on the robot (103), a gripper for clamping a workpiece is arranged at the tail end of the mechanical arm, and a 3D visual recognition system is arranged on the robot (103).
  7. 7. The flexible grinding production line with the shape corresponding to the inner cavity of the shell according to claim 6, wherein the discharging mechanism is arranged on one side of the end part of the ground rail (102), and the grinding stations (101) are distributed on two sides of the ground rail (102) along the length direction of the ground rail (102).
  8. 8. A flexible grinding line with a shape corresponding to the inner cavity of a shell according to claim 6, wherein the 3D visual recognition system comprises a 3D camera (107) mounted on a robot (103) and an image processing unit electrically connected with the 3D camera (107), the 3D camera (107) is used for acquiring three-dimensional image information of a workpiece, and the image processing unit is used for recognizing the model and the spatial posture of the workpiece according to the three-dimensional image information so as to control the robot (103) to transport the workpiece to a corresponding grinding station (101).

Description

Flexible production line for polishing inner cavity of shell along with shape Technical Field The invention relates to the field of polishing, in particular to a flexible polishing production line with a shape following inner cavity of a shell. Background In the prior art, polishing of the housing cavity typically relies on manual operations or fixed tooling for machining. The manual polishing operation requires that an operator holds a polishing tool to position and move in the inner cavity of the shell, so that the labor intensity is high, the polishing quality of each workpiece is difficult to ensure to be consistent, and particularly, the problems of non-polished areas, excessive polishing or uneven surfaces and the like are easy to generate in the manual operation for the shells with complex shapes or different specifications. Meanwhile, potential safety hazards exist in manual operation in a narrow inner cavity environment, and production efficiency is low. Some automatic devices polish the inner cavity through a fixed mechanical arm or a multi-axis machine tool, but the devices are usually designed aiming at workpieces with specific sizes or structures, and are difficult to adapt to the processing requirements of shells with different specifications. In actual production, in order to adapt to workpieces of multiple types, tools often need to be replaced frequently or machining parameters are adjusted, so that production preparation time is increased, and flexibility and automation level of a production line are limited. In addition, the detection of grinding quality in the existing inner cavity grinding process is mostly dependent on manual observation or intermittent sampling detection, and real-time and continuous monitoring of the whole inner cavity surface cannot be realized, so that part of defects are difficult to discover in time. Therefore, the prior art has the main problems that flexible processing is difficult to realize on shells with different specifications and shapes in the polishing process of the inner cavity of the shell, the polishing quality is difficult to control stably, the detection means is not continuous and real-time enough, the production efficiency and the automation level are limited, and meanwhile, the operation safety and the labor intensity are still to be improved. Disclosure of Invention The invention provides a flexible production line for polishing inner cavities of shells along with shapes, which aims to solve the problems that flexible processing of workpieces with different specifications is difficult to realize, polishing quality is difficult to control stably and detection means are not continuous and real-time enough in polishing of inner cavities of existing shells. The invention solves the technical problems by the following technical proposal: The invention provides a flexible production line for polishing a shell inner cavity along with the shape, which comprises a discharging mechanism, a material conveying mechanism and a plurality of polishing stations, wherein the material conveying mechanism is provided with a 3D visual identification system for conveying a workpiece to be polished from the discharging mechanism to a jig of a corresponding polishing station and taking the workpiece off from the polishing station and returning the workpiece to the discharging mechanism after polishing is finished; the polishing station is provided with a polishing executing mechanism, and a visual detection mechanism for observing polishing effect is arranged on the polishing executing mechanism. The visual detection mechanism comprises an endoscope, the endoscope is arranged on one side of the polishing piece, the endoscope is fixed on the driving unit through a bearing rod, and the bearing rod is fixed in an area outside the driving main shaft. One side of the endoscope is provided with a cleaning module for cleaning the surface of the endoscope through air flow, the cleaning module comprises a driving assembly, a transition assembly and a flow guiding assembly, the driving assembly is in transmission connection with the flow guiding assembly through the transition assembly, and air flow generated by the driving assembly is conveyed to the flow guiding assembly through the transition assembly and guided to the surface of the endoscope through the flow guiding assembly. The air flow blows to the surface of the endoscope, so that the endoscope is cleaned, and the influence of polishing dust on the observation sight is avoided. The air flow generated by the driving component is respectively guided to the image pickup end face of the endoscope and one side close to the side wall of the inner cavity of the workpiece by the guide component, wherein the air flow flowing to one side close to the side wall of the inner cavity of the workpiece disappears before the air flow flowing to the image pickup end face of the endoscope, and the air flow speed is smaller and smaller,