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CN-121798024-B - Machining center for metal piece and machining method of machining center

CN121798024BCN 121798024 BCN121798024 BCN 121798024BCN-121798024-B

Abstract

The invention is suitable for the technical field of metal piece processing, and provides a processing center and a processing method for metal pieces, wherein the processing center comprises a workbench and a displacement assembly, the displacement assembly is used for adjusting the position of the metal pieces and comprises a first driving sliding rail arranged at the top of the workbench and a second driving sliding rail sliding at the top of the first driving sliding rail, the top of the second driving sliding rail is provided with a positioning mechanism, a material blocking assembly is used for blocking the metal pieces and guiding points to be cut, the material blocking assembly comprises a thin cylinder arranged at the top of the positioning mechanism, the device solves the problems that when the surrounding type parts are cut row by row, blanking is piled up and the cutting piece is scratched, cutting interference, precision is reduced and finished product qualification rate is low, the device is attached to two sides of a cutting point of a metal part through the swinging plate to form a lower cutter gap, a workpiece can be stably blocked, blanking and cutting piece interference is avoided, machining precision and surface quality are guaranteed, and finished product qualification rate is improved.

Inventors

  • YU HAOHUA
  • DENG CHANGMING
  • WANG JIAQIANG
  • WANG JIALIANG
  • XUE JIANKE

Assignees

  • 常州市佳科汽车零部件有限公司

Dates

Publication Date
20260512
Application Date
20260310

Claims (7)

  1. 1. A machining center for metal pieces is characterized by comprising a workbench (1); The displacement assembly (2) is used for adjusting the position of the metal piece, the displacement assembly (2) comprises a first driving sliding rail (21) arranged at the top of the workbench (1) and a second driving sliding rail (22) sliding on the top of the first driving sliding rail (21), and a positioning mechanism (23) is arranged at the top of the second driving sliding rail (22); the material blocking assembly (6) is used for blocking a metal piece and guiding a point to be cut, the material blocking assembly (6) comprises a thin cylinder (64) arranged at the top of the positioning mechanism (23), a clamping cylinder (65) is arranged at the top of the thin cylinder (64), two driving ends of the clamping cylinder (65) are connected with connecting rods (66), and a swinging plate (67) is arranged at the bottom end of the side wall of the connecting rod (66); a CCD camera (7) which is installed inside the positioning mechanism (23) and is used for shooting the positions and angles of the two swinging plates (67); the cutting assembly (4) is used for vertically cutting the metal piece; A carrier (3) for supporting the cutting assembly (4); The material control assembly (5) is used for assisting in blanking of the cut metal piece; The system also comprises a controller, a control unit and a control unit, wherein the controller is used for receiving shooting data of the CCD camera (7) and executing the regulation and control logic of each component; the controller is configured to be electrically connected with the displacement assembly (2), the cutting assembly (4), the material control assembly (5), the material blocking assembly (6) and the CCD camera (7) respectively; The positioning mechanism (23) comprises a positioning frame (231) sliding on the top of the second driving sliding rail (22) and a positioning cylinder (232) arranged on one side of the positioning frame (231), a piston rod of the positioning cylinder (232) extends to the inside of the positioning frame (231) and is connected with a second rotating cylinder (235), a sliding frame (234) slides in the positioning frame (231), the second rotating cylinder (235) is arranged on the side wall of the sliding frame (234), and a positioning chuck (236) is arranged at the output end of the second rotating cylinder (235); One side of the positioning frame (231) far away from the positioning cylinder (232) is provided with a feeding groove (233), the feeding groove (233) is used for bearing a metal piece, and the positioning chuck (236) is used for propping up and positioning one end of the metal piece; the material blocking assembly (6) further comprises a guide rail (61) arranged at the top of the positioning frame (231) and a sliding table (62) sliding on the top of the guide rail (61), the top of the positioning frame (231) is further provided with a driving cylinder (63), and the end part of a piston rod of the driving cylinder (63) is connected with one side of the sliding table (62); One side of each connecting rod (66) is penetrated and rotated and is provided with a rotating rod (68), one end of the rotating rod (68) is connected with a corresponding swinging plate (67), one end of the rotating rod (68) away from the swinging plate (67) is sleeved with a torsion spring (69), and two ends of the torsion spring (69) are respectively connected with the outer wall of the corresponding rotating rod (68) and the side wall of the corresponding connecting rod (66).
  2. 2. A machining center for metal pieces according to claim 1, wherein the cutting assembly (4) comprises a carrier (41) arranged on the top of the carrier (3) and a hinged frame (42) hinged to the top of the carrier (41), a cutting motor (43) is arranged on one side of the hinged frame (42), an output end of the cutting motor (43) is connected with a cutting blade (45), an adjusting cylinder (44) is hinged to the carrier (41), and a piston rod end of the adjusting cylinder (44) is hinged to one end of the hinged frame (42).
  3. 3. A machining center for metal pieces according to claim 1, wherein when both of the swinging plates (67) are in an inclined state, a virtual extension line is made downward along the inclination angle of the swinging plates (67), and an intersection point of both extension lines is a virtual intersection point.
  4. 4. A machining center for metal parts according to claim 1, wherein the material control assembly (5) comprises an adjusting cylinder (56) arranged on one side of the bearing frame (3), a piston rod of the adjusting cylinder (56) is connected with a mounting frame (53), a material control rotary cylinder (54) is arranged in the mounting frame (53), and the output end of the material control rotary cylinder (54) is connected with a V-shaped supporting plate (55).
  5. 5. A machining center for metal pieces according to claim 4, wherein a positioning frame (51) is installed on the top of the workbench (1), a receiving hopper (52) is installed on the top of the positioning frame (51), an inclined portion is arranged on one side of the receiving hopper (52), and the inclined portion is arranged towards one side of the metal piece.
  6. 6. A processing method for a metal piece using the processing center for a metal piece according to any one of claims 1 to 5, characterized by comprising the steps of: s1, positioning a metal piece through a positioning mechanism (23), and then driving the metal piece to rotate through the positioning mechanism (23) so that a position above a point to be cut on the metal piece is free from shielding; S2, penetrating into the position of the point to be cut of the metal piece through the material blocking assembly (6), and blocking parts on two sides of the point to be cut of the metal piece by using two swinging plates (67); S3, shooting angles and positions of the two swinging plates (67) by using a CCD camera (7), transmitting data to a controller after shooting is completed, and executing cutting control by using the controller, namely judging the minimum distance and the angle between the two swinging plates (67), and optimizing a cutting path of the cutting assembly (4); S4, subsequently, the position of the metal piece is adjusted through a first driving sliding rail (21) and a second driving sliding rail (22), the point to be cut of the metal piece is moved to the lower portion of the cutting assembly (4), meanwhile, the control assembly (5) is used for supporting the part to be cut, then the cutting assembly (4) is used for cutting the metal piece, after the cutting is completed, the two swinging plates (67) are moved out of the metal piece, the first driving sliding rail (21) drives the metal piece to retract away from the cutting assembly (4), then the control assembly (5) is used for collecting the cut part, the positioning mechanism (23) is used for driving the metal piece to rotate to the position of the next point to be cut, the steps S1-S3 are used for adjusting again, and then the cutting assembly (4) is used for cutting the metal again, so that the metal is reciprocated.
  7. 7. The method for processing metal parts according to claim 6, wherein the step S3 of cutting control strategy comprises the following steps: S31, visual perception detection and gesture modeling, namely acquiring images containing bottommost working edges of two swinging plates (67) through a CCD camera (7), identifying and extracting working edge characteristics of the two swinging plates (67), calculating inclination angles of the two swinging plates (67), measuring actual measurement intervals between the working edges of the two swinging plates (67), and establishing a current gesture parameter set of the two swinging plates (67); s32, cutting path space prediction, namely virtually extending the two swinging plates (67) along an inclined angle, calculating virtual intersection points of the two extension lines, and predicting a cutting path according to the position relation between the virtual intersection points and a cutting start plane; S33, performing an intelligent safety decision, namely executing a cutting decision according to the actual measurement distance of the working edges of the two swinging plates (67) and the relative position relation between the virtual intersection point and the cutting start plane, and optimizing the cutting path of the cutting assembly (4).

Description

Machining center for metal piece and machining method of machining center Technical Field The invention relates to the technical field of metal piece processing, in particular to a processing center for a metal piece and a processing method thereof. Background In the lost wax precision casting process, a wax mould is usually formed by string tree type assembly welding, a metal piece string tree with integral pouring gate excess materials is formed after casting and dewaxing, and a plurality of metal pieces circumferentially distributed on the periphery of the metal piece string tree are required to be separated from the excess materials through cutting equipment so as to obtain a single finished product workpiece. At present, the cutting processing of the metal parts is mostly dependent on a metal part processing center, and the separation operation of the metal parts and runner excess materials is realized through a high-speed cutting piece. The cutting device comprises a cutting device, a cutting station, a cutting device and a cutting device, wherein the cutting device is used for cutting metal pieces arranged in a surrounding mode, the cutting device is used for cutting the metal pieces arranged in the same circumferential row of a serial tree, cutting and separating the whole row of metal pieces from the remainder, and then the serial tree of the metal pieces and the remainder bearing the whole rotation of the remainder are set to enable the metal pieces to be processed in the next row to be accurately fed to the cutting station, so that the cutting operation of all the metal pieces is completed in a circulating mode. In the processing process of the row-by-row cutting, as the parts on the metal piece are closely arranged in a surrounding mode, the cut parts cannot be smoothly separated from a cutting area by means of gravity, when the cutting piece cuts into the next part in the same row, the stacked parts can contact and rub with the cutting piece, the preset movement track of the cutting piece can be changed, cutting interference is caused, workpiece processing precision is degraded, surface quality is reduced, and finished product qualification rate is seriously affected. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a machining center for metal parts and a machining method thereof. In order to achieve the purpose, the invention provides the technical scheme that the machining center for the metal piece comprises a workbench. The displacement assembly is used for adjusting the position of the metal piece and comprises a first driving sliding rail arranged at the top of the workbench and a second driving sliding rail sliding on the top of the first driving sliding rail, and the top of the second driving sliding rail is provided with a positioning mechanism. The material blocking assembly is used for blocking a metal piece and guiding a point to be cut, the material blocking assembly comprises a thin cylinder arranged at the top of the positioning mechanism, a clamping cylinder is arranged at the top of the thin cylinder, two driving ends of the clamping cylinder are both connected with a connecting rod, and a swinging plate is arranged at the bottom end of the side wall of the connecting rod. And the CCD camera is arranged in the positioning mechanism and is used for shooting the positions and angles of the two swinging plates. And the cutting assembly is used for vertically cutting the metal piece. And the bearing frame is used for supporting the cutting assembly. And the material control assembly is used for assisting blanking of cut metal pieces. The system also comprises a controller for receiving shooting data of the CCD camera and executing the regulating and controlling logic of each component. The invention is further arranged that the controller is configured to be electrically connected with the displacement assembly, the cutting assembly, the material control assembly, the material blocking assembly and the CCD camera respectively. The positioning mechanism comprises a positioning frame sliding on the top of the second driving sliding rail and a positioning cylinder arranged on one side of the positioning frame, a piston rod of the positioning cylinder extends to the inside of the positioning frame and is connected with a second rotating cylinder, a sliding frame slides in the positioning frame, the second rotating cylinder is arranged on the side wall of the sliding frame, and a positioning chuck is arranged at the output end of the second rotating cylinder. The locating cylinder is characterized in that a feeding groove is formed in one side, far away from the locating cylinder, of the locating frame, the feeding groove is used for bearing a metal piece, and the locating chuck is used for propping up and locating one end of the metal piece. The invention is further arranged that the cutting assembly comprises a carrier frame arranged at th